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64-425 -YMCA LEGGS HILL ROAD - CONSERVATION COMMISSION � � s ' � z ca n r- � s � f � �a. .. .._ � . . ' _ _.. 'o.Ni_Mii..� � . . ...._.. �. �' ' ��••• ....�:�Gii'¢1'QfY.1L� " l �"y�9L4"-^' �i64Ya.i'L:'"'u.4Yf1 • ..• • �.• ..• n �•—.. '�� -:::. �t�ttli..Y�aY�TE4Y 'Ja4� ��...�—. ' " �•��•.nw�t4'&:YY��+Ya.iHx«;�aY_AL"fie"4�3!!'e�x31M�'a� � �'••..� . ..r.n .a-.�:..`..... .. n MENINNO � � CONSTRUCTION CO.,INC. 76 OAKVILLE ST. LYNN, MA 01905 081)58L5333 FAX(78ll 593-2070 � - 7g�'-C��4' -Z�9b�j _ v�cc e.@ G�tew r��.o �n5'�J�c"t'�an .c�M NICK MENINNO _.. _ . G� Tim Costin � ��ky;e„� Project Manager , --/ timQgroomco.com .� tel: 787.592.3135 ext.218 (ax: 787.593.1480 celP 978-836-9D5 I 96 Swampscott Road,Salem,MA 07970 '�� www.groomco.com _. I . t ,�_ ! .� "� r�� c i � � �� I y � � � .�.�.�� F �� b � � I I � � a,�a°��`A:��a`;`�.,��;..�'�W�1�d'"°��'�' i� I L� �� - L93 � - ZC9`�v.3 � s�- � �-�! - �v3( — ZC��S �� I f1�n1C�cK"�-��,,�oC�z'iGo. Co17� Groom Construction Co., Inc. ` 324 Essex Street � � � � Swampsrott, MA 01907 �'v3TRUC'1'I� � . Craig Lanouette Superintendent Tel.• 781-592-3135 Far.• 781-593-1480 Cell: 78I-858-1269 i -c�ohnrr�a - ' . �' � � ;�vt_=�.�'� �� CITY OF SALEM ��`�'"� CONSER�IATION COMMISSION ^��,. January 28,2011 Scott Patzowics 14 Brown St. , Salem, MA 01970 Re: Certificate of Compliance—DEP#64-420—Leggs Hill YMCA Dear Mr. Patrowics: L;nclosed, please find the Cectificate of Compliance for the above referenced project. This Document must be recorded at the Essex County Re,gistry of Deeds, Shedand Park 45 Congress Street, Suite 4100 Salem, Massachusetts. Please fill out and return the Recording InfocmaRon on page 3 of the Certificate of Compliance, which will indicate to the Salem Conservation Commission that the document has been recorded. IPlease note that this Certificate of Compliance is issued with the condidon that erosion controls will be removed in a timely mannci,weather pexmitting. Please contact me as svon as the erosion controls have been cemoved. If you have any further questions please feel free to contact me at (978) 619-5G85. Sincerely, 1' evine Conservation Agent/ StaEf Plannez Enclosures CC: llSP Northeast Regional Office t ! . : I '�n; ,�.�, ��I��I��I��I�� 2011020209301 6k;30219 Pg;351 02/02/2017 03:45 COMPLi pg 7/q - Massachusetts Department of Environmental Protection � Bureau of Resource Protection - Wetlands DEP File Number. ` WPA Form 8B — Certificate of Compiiance 64-420 Massachusetts Wetlands Frotection Act M.G.L. c. 131, §40 providedbyDEP A. Project Information . �. Important: . . When filling out 1. This Certificate of Compliance is issued to: � fortns on the computer,use YMCA�f the North Shore � only Me tab key Name � -- to move your 245 Cabot St. cursor-donot MailingAddress — �-- use the retum - key. •- Beveriy MA Q1915 � 'City/iown � State ZipCode �d 2. This Certificate of Compliance is issued for work regulated by a final Order ot � Conditions issued to: YMCA of the North Shore f°"' Name --�-� 6/8/2006 . Dated - � DEP Fila Numbar 3. The project site is located at: Leggs Hill Rd. Salem . . StreetAddress - CRylfown - � 30 83 Assessors Map/Plat Number - Parcel/Lot Number � ' the final Order of Condition was rewrded at the Registry of Deeds for: YMCA of the North Shore . � . Property.Owner('rfditferent) � . . .. � . . . Essex 25862 96 � . � . County . � . � Book . Page� , � . . � Certificate . . . � . .. . � . . 4. A site inspection was made in the presence of the applicant, o�the applicanYs agent; on: : 1/7/2011 - . - � � Date � . ' . . . . -- . � a� ��. . . � � . . .. . � . . �� ewpahmeb.doc.rev.�7223�D9 .. . . � . WPA Form 8B.Cenifipte of Compliance�Page 1 of 3�:' 4 � V � , . i�;.•�,..' �. � . � .. . '� A . . . .. . � . . , . - ��F.. l Massachusetts Department of Envirorrmentai f�ro�tec#ion � Bureau of Resource Protection -Wetlands DEP File Number. ` WPA Form 86 — Certificate of Com�lian�e �-0Zo Massachusetts Wetlands Protection Act M.G.I. c. 131, §4Q providedbyDEP B. Certification — Check aIl that apply: � Complete Certiflcation: It is hereby certifled that fr�e work regulate�i by the above-referenced Order of Conditions has been satisfactoriiy compieted. ❑ Partial Certification: It is hereby certified th2t c�nly th�foUowing po�iions of wo�ic regulated by the above-referenced Order of Corditions have been satisfactorily com leted.The ro'ect areas or w p p ) ork subjec;t to this pa�tial ce!tification that have been completed and are released frum thi,Order are: ❑ Invalid Order of Conditions: It�s hereby certified that the�a•ori:. iEgulated by th2 above-referenced Order of Conditions never corr�me�ced. The Order ef Conditions has lapsed and is therefore no lorger va?id. N�futu;e work sub;�r,t tio regulation under the Wetlands Protection Act mati commen�e vrithoat filioa a new Notice of Intent and receiving a new Order of Conditiun:�,. � Ongoing Conditions: The following cond�tions uf±he Urder shall rontinue: (Includeany-conditions containe�+ in the Final Order, such as main'rena7ceae- monitoring, that should continue for a longer peeiod;. Condition Nurnbers: 50,51: See attached Deed Restriction 'Certificate is conditioned on tirnely removal oferosion conirols, weather pe'rmitting. C. Authorization Issued by: Salem �` a ? —��j � Conservation Commissian � - - Date ot Issuance � This Certifi e signed by a majority of the Conservatiun Commission and a ' copy se to the appli nt and approp�iate DEP Regiona!OfficE(See htt :// .mass. ov/ e IabouUre ion/tind our.htm). Signatures.•''., /� ^`: -- , i + , �M�� ; . il I ---- �_ ' . �� .wpsfrmPO.doc•rev..12R3709 . . . . � . .. ' WPAFom�BB�CertifcateMC ege . .,� . . . . . . . , . . . .� �. . . . ompllance•P 2of`s� �..: ,"tr � . . . . � ' .. . . y „ ' . . � . . , .. , . Dee Restriction for YMCA Leaqs Hill Road: This property includes protected Wetland Resource Areas, as defined by the Massachusetts Wetlands Protedion Act, M.G.L. Chapter 131, and is subject to a perpetual conservation restriction pursuant to Condition #50, DEP #64-420 Order of Conditions (for the property recorded at Essex County Registry of Deeds book 7598, page 54) issued by the Salem Conservation Commission. The restricted area consists of a twenty foot(20')wide area delineated on the sketch plan entitled "Figure 3 Limits of Area Subject to Conservation Restriction" dated June 7, 2006 and attached hereto. The activities specifically prohibited under this restriction include dumping, cutting down trees, disturbing the area thaf abuts resource area, and altering the grade and/or topography of the property without approval from the Salem Conservation Commission. Allowed activities shall be consistent with passive recreation and wildlife interpretation. � - . . . ' � , ,; . , . .. ' �. _ � ' ' ' � J:.. 1 . . . . �y'.t r � .�5,xi ., . . . � 1 �t+4��< Y ( � I Itc - � ,_ � ... �� + . . t f tiI , . �_ . . . . �. �,, a .,; . ' x k.t E 1 t �wl� . _.k�d.e.�«.> ..1. . .. :� . .. ..e.e. .y.ly�..� ,. � . . . . '5....iaa ,..1...,,vkw r y � . � � ., S �� g � � 2 � a . -. - . � . � � � r �� . . ..a„ � : "g� _ . � .. . .. '- . . � . - . � . . - '��t.:�: � �. �� . . r � .. �,ri'r�h . . � . . +.�.,., �'�. �;�._. � . ; -..... . ... �.fe� . . . . y �_� .. . , .. .. .:� . . .\ , �, W : \}v3�'�_- '. . . � � II J13: _. ��Yi _ ' � __! i r ~ � . . , '� . �� / ��qY " ' . . . ' .. . Y � � . � � I / � - .. . I � . �� `�� ` I J � / � / \ , . ,.. , /� ' , �t , �4 � V i �p _� � =�?� '� � _ � � � � _ , . . . � ��5^5�'`'a s �� '� �i r "� 4 0:. '. ti . � � °� � � - /C .�5, i, s'� � +� w� � x �� . „ ' � y G � . . : , - �" { ' y�,� _ :.,.,�"t�.. . I � 3.� W � .n ? L T'� x4 r'�'Y'�f p�� oa c �'t� , l �.� -°" ye1`�� w .� � � t . �, ..A*,.r.. .• ' � ' . '< av g.� �p� �,. � �.'�� . -t.�,�o� w, ..: x �. _ `. .E . . '+ E5 H.? ` '.v '7 : ' � F �' s� � F`Y ; '_.,�a ��.;� � � y� . . \ , - . ., � � .. � _:. ..:_ _ . _ .. . �: . ; , _ _. :` '� . e � " ::. . �- . Y.' .. �, ' / \ r , - i.'. . �' �'Y 3 �` . � i i f .- •s �' '� .. �. . + \� ^� . i � t ' +�° Y ��. .� . . , : . . � Y . +_ , , ` ... _ � R: � P � � / ;;; 8 ?:�, . � .. . . . . � . . r ' r/ � Massachusetts Department of Environmental Protection I B f - DEP File Number. u eau of Resource Protection Wetlands � WPA Form 5 — Order of Conditions �-420 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 A. General Information �mpo�� Salem When filling From: �,Conservation Commission out forms on I uh�Q mpt�r, z. This issuance is for(check one): a. � Order of Conditions b. ❑ Amended Order of Conditions I N tab key to 3.To: Applicant: move your cursor-do not Jack Meany YMCA of the North Shore use the retum a.First Name b.Last Name c.Company key. 245 Cabot Street � d.Mailing Addresa °° BeverlV Massachusetts 01915 � e.Cily/Town f.State g.Zip Code � a. Property Owner(if different from applicant): a. First Name b.Last Neme c.Company d.Mailing Address e.City/Town f.State g.Zip Code e. Project Location: Leggs Hill Road Salem I, a.Street Address b.City/Tawn i Map 30 Lot 83 c.Assessors Map/Plat Number d.ParceULot Number Latitude and Longitude, if known (note: elecVonic filers will click for GIS locator): e.i.atituae f. Longitude s. Property recorded at the Registry of Deeds for(attach additional information if more than one parcel): Essex a.Cou�ty b.Certficate('rf registered land) 7598 54 c.Book d. Page �. Dates: April 27, 2006 June 8, 2006 June 8, 2006 a.Date NMice of Intent Filed . b.Date Public Hearing Closed c.Date of Issuance s. Final Approved Plans and Other pocuments(atfach additional plan or document references as needed): Site Plans YMCA at Leggs Hill Road a. Plan Tdle Vanasse Hangen BrusUin Inc. Christopher Novak and Russell J. Qousquet b.Prepared By c. Signad and Stampetl by June 8, 2006 varies d.Final Revision Date e.Scale Outfall Locations and Enbankment Restotatlon Areas June 7, 2006 f.Additional Plan or pocument Title g.Date wpelam5 Gx• rev.3H/05 Page i a(9 _ _ / , - - — � Massachusetts Departrnent of Environmental Protection DEP File Number. � Bureau of Resource Protection -Wetlands WPA Form 5 - Order of Conditions �20 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Findings �. Findings pursuant to the Massachusetts Wetlands Protection Ad: Foltowing the review of the above-referenced Notice of Intent and based on the information provided in this application and presented at the pubtic hearing,this Commission finds that the areas in which work is proposed is significant to the folbwing interests of the Wetlands Protection Act Check all that aPP�Y a. � Public Water Supply e. ❑ Land Containing Shelifish c. � Prevention of Pollution r. � Protection of Wildlife d. � Private Water Supply e. ❑ Fisheries Habitat y. � Groundwater Suppy n. � Storm Damage Prevention i. � Flood Control 2. This Commission he2by finds the Project,as proposed, is:(check one of the following boxes) Approved subject to: a. � the following conditions which are necessary in accordance with the performance standards set forth in the wetlands regulations. This Commission orders that all work shall be performed in accordance with the Notice of Intent referenced above, the following General Conditions, and any other special conditions attached to this Order.To the extent that the folbwing conditions modiiy or drffer from the plans, specifications, or other proposals submitted with the Notice of intent, these conditions shall control. Denied because: b. ❑ the proposed work cannot be conditioned to meet the perfortnance standards set forth in the wetland regulations. Therefore,work on this project may not go forvvard unless and until a new Notice of Intent is submitted which provides measures which are adequate to protect these interests, and a final Order of Condfions is issued. A description of the performance standards whlch the , proposed work cannot meet is attached to this Order. c. ❑ the informaGon submitted by the applicant is not sufficient to describe the site, the work, or the eHect of the work on the interests identified in the Wetlands Protection Act. Therefore,woric on this project may not go forvvard unless and until a revis� Notice of Intent is submitted which provides sufficient information and includes measures which are adequate to protect the AcYs interests, and a ' � n is i ued.A descri on of the s iflc information whkh is lackln and final Order of Condtta s ss pti pee 9 why k� necessary is attached to this Order as per 310 CMR 10.05(6)(c). Inland Resource Area Impacts: Check all that appty below. (For Approvals Only) s. � Buffer Zone Impacts: Shortest distance between limit of project disturbance and 20 wetland boundary(if available) a.Iinear feet Resource Area Proposed Permitted Proposed Permitted Alteration Alteratlon Replacement Replaceme�t . 4. ❑ Bank a.linearfeet b.linearfeet c.linearfeet d.linearfeet s. ❑ Bordering Vegetated We�land a.sQuare feet b.squere feet c.square feet d.square feec s. ❑ Land Under Waterbodies a.square feet e.square teet c.square reet d.square reet and Watervvays e.a.yd dredged f.cu.yd dredged wpelurtS.Eoc•rev.&1/05 - Pege2N9 � Massachusetts Departrnent of Environmental Protection DEP File Number. - In I Bureau of Resource Protection Wet a ds � WPA Form 5 - Order of Conditions �20 Massachusetts Wetlands �rotection Act M.G.L. c. 131, §40 B. Findings (cont.) Resource Area Proposed Pertnitted Proposed Pertnitted I Alteratlon Alteration Re lacement Re lacement P P 7. ❑ Borde�ng Land SubjBCt to Flooding a.sQuare feet b.square feet a square feet d.square fieet Cubic Feet Flood Storage e.cubic feet f.cubic feet g.cubic faet h.cubic feet e. ❑ Isolated Land Subject to Flooding a.squaie feet b.square feet Cubic Feet Flood Storage c.abic feet d.abic teet e.wbic teet f.cubic feet s. ❑ Riverfront area a.totsi sv.feee D.total sq.feet Sq ft within 100 ft c.square feet d.square feet e.square feet f.square feet Sq ft behHeen 100-200 ft g.square feet h.square feet i.square feet j.square feet Coastal Resource Area Impacts: Check all that appty below. (For Approvals Only) �o. ❑ Oesignated Port Areas Indicate size under Land Under the Ocean, below ��. ❑ Land Under the Ocean a.syuare reec b.square reec c.cu.yd dredged d.cu.yd dredged �z. ❑ Barrier Beaches Indicate size under Coastal Beaches and/or Coastal Dunes below 13. ❑ C08Shdl BBBChBs a.square feet b.square feet c.cJy nourishmt. d.c/y nourisnmt. 14. ❑ C085f21 DUf12S a.square faet b.square feet c.My nourishmt. d.dy nourishmt �s. ❑ Coastal Banks a.rnearreet b. rnearree� is. ❑ Rocky Intertidal Shores a.syuare reet e.square ree� t7. ❑ Salt Matshes a.square teet b.square teet c.square feet d.square feet �a. ❑ Land Under Salt Ponds a.square reet b.square fee� c.a.yd dredged d.a.yd d�edged �s. ❑ Land Containing $h81�fISh- a.square fee4 b.square feet c.squa�a feet d.square feat 20. ❑ Fish Runs Indicate size under Coastal Banks, inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Watervways, above a.cu.yd dredged b.cu.yd dredged 2t. ❑ Land Subject to Coastal Storm Flowage a.syuare teec b.sauare reet wpelomS.Ox• rev.311I05 Pepa 3 0/8 � Massachusetts Departrnent of Environmental Protection � Bureau of Resource Protection -Wetlands �EP File Number. WPA Form 5 — Order of Conditions �-420 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 D. Findings Under Municipal Wetlands Bylaw or Ordinance , t Is a municipal wetlands bylaw or ordinance applicable? ❑ Yes ❑ No z. The hereby finds(check one that applies): Conservation Commissio� a. ❑ that the proposed work cannot be conditioned to meet the standards set forth in a municipal ordinance or bylaw specfically: a.Municipal OMinence or Bylaw b.Citetion Therefore,work on this project may not go forvvard unless and until a revised Notice of Intent is submitted which provides measures which are adequate to meet these standards, and a final Order of Conditions is issued. a. ❑ that the following additional conditions are necessary to comply with a municipal ordinance or bylaw: a.Municipal Ordinente or Bylaw b.Ckatlon The Commission orders that all work shall be perfortned in acCordance with the fo�lowing Condftions and with the Notice of Intent referenced above. To the extent that the following condfions modify or differ from the plans, specifications, or other proposals submitted with the Notice of Intent, the conditions shall control. If you need more G The special conditions relating to municipal ordinance or bylaw are as follows: space for . additbnal conditiona, seled box W attach a text dxument ❑ xpe(amS.daC• rev.3I1I05 Pege 6 d 9 � Massachusetts Departrnent of Environmental Protection � Bureau of Resource Protection - Wetlands DEP File Number. WPA Form 5 — Order of Conditions �-�zo Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 E. Issuance This Order is valid for three years, unless othenvise specfied as a special June 8, 2006 condition pursuant to General Conditions#4, from the date of issuance. �.oate a issuance Please indicate the number of inembers who will sig�this form: five(5) This Order must be signed by a majorily of the Conservation Commission. 2.Number of si�ners The Order must be mailed by certified mail(retum receipt requested)or hand delivered to the applicant. A copy also must be mailed or hand delivered at the same time to the appropriate Departrnent of Environmental Protection Regional Oifice, 'rf not filing electronically, and the properiy owner, if d'rfferent from applicant Signatures: /�� NoWry Acknowledgement Commonwealth of Massachusetts County of Essex On this 8� June 2008 Day �f Month Year Before me,the undersigned Notary Pubiic, Kevin Comacchio, Michael Blier, Kevin Cart, personally appeared Keith Glidden, &David Pabich proved to me through satisfactory evidence of identification,which wasNvere personally known Deacription of avidence of identificetlon to be the person whose name is signed on the preceding or attached document,and acknawledged to me that he/she signed it voluntarily for its stated purpose. As member of Salem Conservatlon Commission c�yrt� � FRANK7AOflMINA Np�,rypublic �� „ q�, ��e�ofMassadm � My Commiss�on FxP�� 1 � qpri127.2012 G�o7.uc-�/ Sig atura of ry ublic Frank Taormin � Printed Name ot Notary Pubfic . � . - ' -�� j , � Place notary seal and/or any stamp above AP�I 27 2012 My Commission E�ires(Data) . This Order is issued to the applicant as follows: ❑ by hand delivery on ❑ by certified mail, retum receipt requested,on Date Date vipeformS.GOC• rev.3NM5 Pepe 7 af 9 L f � Massachusetts Departrnent of Environmental Protection � DEP File Number: Bureau of Resource Protection -Wetlands WPA Form 5 — Order of Conditions �-420 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 F. Appeals The applicant, the owner, any person aggrieved by this Order, any owner of land abutting the land subject to this Order, or any ten residents of the city or town in which such land is located, are hereby notified of their right to request the appropriate DEP Regional Office to issue a Superseding Order of Conditions. The request must be made by certified mail or hand delivery to the Department,with the appropriate filing fee and a completed Request of Deparimental Action Fee Transmittal Form, as provided in 310 CMR 10.03(7)within ten business days from the date of issuance of this Order. A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the appticant, if he/she is not the appellant.Any appellants seeking to appeai the DepartmenPs Superseding Order associated with this appeal will be required to demonstrate prior partiapation in the revieyv of this projed. Previous participation in the pertnit proceeding means the submission of written infortnation to the Conservation Commission prior to the close of the public hearing, requesting a Superseding Order or Determina6on, or providing written information to the Departrnent prior W issuance of a Superseding Order or Determination. The request shall state clearly and concisely the objections to the Order which is being appealed and how the Order does not conUibute to the protection of the interests identified in the Massachusetts Wetlands Protection Act, (M.G.L, c. 131, §40)and is inconsistent wifh the wetlands regulations(310 CMR 10.00). To the extent that the Order is based on a municipal ordinance or bylaw, and not on the Massachusetts Wetlands Protection Act or regulations, the Deparlment has no appellate jurisdiction. Section G, Recording InformaUon is available on fhe foliowing page. wpakmb.doc• rw.&tA5 Page 8 of 8 Massachusetts Departrnent of Environmental Protection � DEP File Number: Bureau of Resource Protection - Wetlands WPA Form 5 — Order of Conditions �-420 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 G. Recording Information This Order of Conditions must be recorded in the Registry of Deeds or the Land Court for the district in which the land is located, within the chain of tiUe of tlie affected property. In the case of recorded land, the Final Order shall also be noted in the Registry's Grantor Index under the name of the owner of the land subject to the Order. in the case of registered land, this Order shall also be noted on the Land Court Certificate of Title of the owner of the land subject to the Order of Conditions. The recording information on Page 7 of this form shall be submitted to the Conservation Commission listed below. SALEM Consenatlon Commission Detach on dotted line, have stamped by ihe Registry of Deeds and submit to the Conservation Commission. --------------------------------------------------------------------------------------------------------------------------- To: SALEM Conservation Commission Please be advised that the Order of Condi�ons for the Project aY. Leggs Hill Road if64-420 Prqect Location DEP File Number Has been recorded at the Registry of Deeds of: County Book Page for. Property Owner and has been noted in the chain of title of the affected property in: Book Page In accordance with the Order of Conditions issued on: Date If recorded land, the instrument number identifying this Vansaction is: InsW meM Number- If registered land, the document number identiTying this transaction is: DocumeM Number Signature of Applicant wpefdmS.dx• rev.3H/OS Pepe9d9 . �� Attachment to Otdet of Conditions # 64-420 �� Page�of fi a SALEM CONSERVATION COMMISSION DEP FILE #64-420 YMCA at Leggs Hill,Leggs Hill Road City of Salem,Massachusetta ADDTTIONAL FINDINGS Based on the Estimated Habitats or Rare Wildlife and Certified Vemal Pools Map (June l, 2003) from Natural Heritage&Endangered Species Progtam(NHESP)of the Massachusetts Division of Fisheries and Wildlife, it has been determined that this project dces not occur near any habitat of stata-listed rare wildlife species nor contains any vemal pools. This Order is issued under the Massachusetts Wetlands Protecrion Act,M.G.L.Chapter 131,Section 40 and the City of Salem Wetlands Protection Ordinance,Salem Code Chapter 34,Section 341—3413. T'his Order permits �e construction of a subdivision roadway for future house lot development, associated stormwater management structures, installarion of utilities,grading, fire access road,embankment restoration, and the coastruction of a retaining wa1L All such activitias will occur within a buffer zone to and inland bank. The new 88,525 sq ft YMCA facility, associabed utilities, parking lot, landscaping, etc will occur outside of the Salem Consecvffiion Commission's jurisdiction. No re4idential home construcrion is permitted under this Order. GENERAL CONDITTONS l. This Order of Conditions must be recorded in its entirety(all 6 pages)at the Essex County Registry of Deeds or the Land Court for the district in which the land is located,after the expiration of the 10-day appeal period and within 30 days of the issuance. A copy of the recording informatioo must be submitted to the Salem Coesetvation Commission before any work approved in this Order commencea. 2. Approval of this application dces not constitute compliance with any Iaw or regulatioa other than M.G.L C6apter 131, Section 4Q Wetlands Regulations 310 CMR 10.00 and the City of Salem Wedands Protection Ordinance,Salem Code Chapter 34,Section 341 —3413. 3. All work shall be perfomed in accordance with this Order of Conditions and approved site plan(s). No alteration of wetland resource areas or associated buffer wnes,other than that approved in this Order, shall occur on this pmperiy without prior approval from the Commission. 4. Prior to any work commencing,a sign shall be displayed showing DEP File N64-420,and not placed on , a living tree. 5. No work approved in this Order may commence until the ten(10)day appeal period has lapsed from the date of the issuance of dtis Otder. 6. With respect to this Order,the Commission designates the Conservation Agent as its agent with powers to act on its behalf in administering and enforcing this Order. ,a"�'j"+� Attachmrnt to Order of Condidons # 64-420 �� Page Zof 6 m.. . 7. 7'he Commission or its Agent,officers,or employees shall have the right to enter a�d inspect the property at any time for compliance with the conditions of this Order,the Wetlands Protection Act MGL Chapter 131, Section 40,the Wetlands Regulations 310 CMR 10.00,and shall have the right W require any data or documentation that it deems necessary for that evaluation. 8. The term"ApplicanY'as used in this Order of Conditions shall refer to the owner,any successor in interest or successor in control of the propeRy referenced in the Notice of intent,supporting documents and this Order of Conditions. The Commission shall be notified in writing within 30 days of all transfers of title of any portion of the property that takes place prior to issuance of the Certificate of Compliance. 9. It is the responsibility of the applicant to procure all other applicable federal, state and local permits and approvals associated with this project. These permits may include but are not necessarily limited to the following: (1) Section 404 of the Federal Water Pollution Control Act(P.L. 92-500, 86 stat.8t 6),U.S.Army Corps of Engineers. (2) Water Quality Certification in accordance with the Federal Water Pollution Control under authority of sec.27(5)of Chapter 21 of the Massachusetts General Laws as codified in 314 CMR 9.00. (3) Sewer Extension Petmit from the DEP Division of Water Pollution Control under G.L.Ch.21A ss7 and 314 CMR 7.00. My Board of HealUt permit for septic system design for any poRion of the ' sepric system within 100 feet of wetlands sha11 be submitted to the Commission prior to consWction initiation. , (4) Design Requirements for Construction in Floodplains under the State Building Code(780 CMR 744.). 10. If there are conflicting conditions wit6in this Order,the stricter condition(s)shall rule. 11. All work shall be performed so as to ensure that there will be no sedimentation into wetlands and surface watecs during construction or after completion of the project. 12. The Commission or its Agent shall have the discretion to modify the erosion/siltation control methods and boundary during construction if necessary. 13. The Commission reserves the right to impose additional conditions on portions of this project or this site to mitigate any actual or potential impacts resulting from the work herein permitted. 14. The work shall wnform to the following attached plaus and special conditions: Final Approved Plans Site Plans YMCA at Leggs Hill Road,Outfall Locations and Embankment Restoration Area (Ti1/e) June 8, 2006 lDaredl Christopher Novak and Russell J.Quosquet(Vanasse Hangen Brustlin, IncJ (Signed ond SYamped by) Ciry of Salem Conservation Commission (On Jlle wit/t) Attachment ro Ordes of Condirions # 64420 �� Page 3of � II 15. Any proposed changes in the approved plan(s)or any deviation in construction from the approved plan(s)shall require the applicant to file a Notice of Pro�ect Chanee with the Commission. T'he Notice shall be accompanied by a written inquiry prior to their implementation in the field, as to whether the I change(s)is substanNal enough to require filing a new Notice of Intent or a request to cort�ect or amend ' this Order of Conditions. A copy of such request shall at the same time be sent to the Department of ' Environmental Protection. �i 16. In conjuncrion wiUi the sale of this properry or any portion chereof before a Certificate of Compliance hes ! been issued,the applicant or cwrent landowner shall submit to the Commission a statement signed by the ' buyer that helshe is aware of an outstanding Order of Conditions on the properly and has mceived a copy of , the Order of Conditions. ' 17. Condition H511 and#Slas indicated shall continue in force beyond the Certificate of ComQliance,in perpetuity,and shall be referenced to in all future deeds to this property. PRIOR TO CONSTRUGTION 18. Prior to the commencement of sny activity on this site other than activities lieted above,there s6a11 be a PreConstruction MeeNng between the project supervisor,the contractor responsible for the work,and a member of the Conservation Commission or its Administrator to ensure that the requirements of t6e Order of Conditions are understood. Tha staked erosion control line shall be adjusted, if necessary,during the pr�consdvction meeting. Please contact the Conservation Commission Agent at(978)745-9595 e�ct 311 at least forry-eight(48)hours prior to any activity to arrange for the pre-construction maeting. 19. Prior to d�e pre-conshuction meeting and commencement of any activity on this site,sedimentation and erosion co�rol barriecs sl�all be installed as shown on the approval plan(s)and detail drawings. The Commission and/or its Adminishator ahell inspect and approve such instsllatioa at the pre-construction meeting. 20. No clearing of vegetstion,including Ueas,or disturbence of soil shall occur prior to the pre�construction meeting. Minimal disturbance of stwbs and herbaceous plants shall be allowed prior to the pre- conslruction meeting if abso(utely necessary in order to place erosion conhol sfakes where ret{uired. 21. There shall be twenty(20)hay bales and wooden stakes under cover on the site to be used only Fw emergency erosion control. ' EROS[ON CONTROL 22. Appropriate erosion control devices sha11 be in place prior to the beginaing of any phase of construction, and shall be maintained during consLucrion in the wetland areas and buffer zones. T'he emsion control specifications provided in the Notice of Intent and the erosion control provision in the Order will be the minimum standards for this projec�the Commission may require additional measures: 23. AII debris,fill and excavated material shall be stockpiled a location faz enough away from the wetland resource areas to prevent sediment from entering wetland resource areas. 24. Erosion and sediatentatioa control devices s6a11 be inspected after each storm evem and repaired or replaced as n�essary. My accumulatad silt adjace�to tha barriers shall be removed. 25. T'he area of construction shall remain iw a stable condition at the close of each consUuction day. �r� Attachment to Otder of Conditions#64420 ��Qf� Page 4°f f v,. 26. My de-watering of trenches or other excavation required during construction shall be conducted so as to prevent siltation of wetland resource areas. Atl dischazge from de-watering activities shall be filtered through hay bale sediment traps, silt filter bags or other means approved by the Commission or its Administrator. 27. Within thirty(30)days of completion of construction on any given poRion of the project,all disturbed areas in the compieted portion of the site shall be permanently stabilized with rapidly growitig vegetative cover, using sufficient top soil to assure long-term stabilization of disturbed areas. 28. If soils are to be disturbed for longer that two(2)months, a temporary cover of rye or other grass should be established to prevent erosion and sedimentation. If the season is not appropriate for plant growth, exposed surface shall be stabilized by other appropriate erosion contro!measures,firmly anchored,to prevent soils from being washed by rain or flooding. DURING CONSTRUCTION 29. A copy of tltis Order of Conditions and the plan(s)approved in this Order shall be available on site at all times when work is in progress. 30. No alteration or xtivity shall occur beyond the limit of work as defined by the si(tation bamers shown on the approved plan(s). 31. AII waste products,grubbed stumps,slash;constcuction materials,etc.shall be deposited at least 100 feet from wetland resource areas and 200 feet from river. 32. Cement hucks shall not be washed out in any wetland resource or buffer wne area,nor into any drainage system. My deposit of cement or concrete products into a buffer zone or wetland resounce area shall be immediately removed. 33. All e�cposed sub-soils shall be covered by a minimum of three(3)inches of quality screened loam topsoil prior to seeding and final stabili7ation. 34. Immediately following drainage structure installation all inlets shall be protected by silt fence,haybale barriers and/or silt bags to filter silt from stormwater before it enters the drainage system. 35. There shall be no pumping of water from wetland resource areas. 36. All equipment s6all be inspacted cegulazly for leaks. My leaking hydraulic lines,cylinders or any other components shall be fixed immediately. 37. During construction,all drainage structures shall be inspected regularly and cleaned as necessary. 38. T'he applicant is herby notified thai failure to comply with all requirements herein may resuh in the issuance of enforcement actions by the Conservation Commission including,but not limited to,civi(administrative penalties under M.G.L Chapter 21A,section 16. AFTER CONSTRUCTION 39. Upon completion of construction and final soil stabilization,the applicant shall submit the followiag to the Conservarion Commission to request a Certificate of Compliance(COC): (I) A Completed Request for a Certificate oFCompliance form(WPA Form 8A or other form if required by the Conservation Commission at the time of request). ,3 j'°o Attachment to Order of Conditions# 64-420 �� Page�of 6 (2) A letter from a Registered Professional Engineer certifying compliance of the property with this Order of Conditions. (3) An "As-Built"plan signed and stamped by a Registered Professional Engineer or Land Surveyor showing postconstruction conditions within all areas under the jurisdiction of the Massachusetts Wetlands Protection Act. This plan shall inc(ude at a minimum: (a) All wetland resource area boundaries with associated buffer wnes and regulatory setback azeas taken from the plan(s)approved in this Order of Conditions; (b) Locations and elevallons of all stormwater management conveyances,structures and best management designs,inciuding foundation drains,constructed under this Order within any wetland resource azea oc buffer wne; (c) Distances from any structures constructed under this Order to wetland resource areas- "structures"include,but are not limited to,all buildings,septic systcm components,wells, utility lines,fences,retaining walis,and roads/driveways; (� A line delineating the limit of work-"work"includes any filling,excavating and/or disturbance of soils or vegetation approved under this Order, 40. When issued,the Certificate of Compliance must be recorded at the Essex County Regisdy of Deeds and a copy of the recording submitted to the Salem Consecvation Commission. 41. If the completed work differs from that in the original plans and conditions,the report must specify how the work differs; at which time the applicant shall first request a modification to the Order. Only upon review and approval by the Commission,may the applicant request in writing a Certificate of Compliance as described above. 42. Erosion control devices shall remain in place and properly func6oning unNl all exposed soils have been stabilized with final vegetative cover and the Conservation Commission and/or its Administrator has auffiori2ed their removal. ADDITIONAL CONDfPIONS 43. Applicant shall replace the two(2)proposed catch basins in the cul-de-sac with two(2)double catch basins in order to mitigate for the projected runoff from the fire access roadway. 44. During the Pre-Construction Meeting the applicant shall�equest wetland markers from the Conservation Agent and shall display wetland mazkecs in visible area along the 20-foot No Build No Disturb Zone. 45. Prior to the start of any work on site, orange snow fencing shall be installed to demazcate the limit of work line. This fencing shall be maintained in good repair until the completion of work 46. The individual house lots created by the subdivision identified as Lot 1,Lot 2,Lot 3,Lot 4, and Lot 5 on Sheet C-4.1 ofthe approved site plans are subject to Salem Conservation Commission jurisdiction. Any work within the 100-foot buffer zone will require the filing of an application with the Commission. This order of Conditions dces not approve the consdvction or work beyond that depicted in the plan of tecord. 47. As mitigation fro the placement of riprap on the pond embankment associated with the drainage outfall structure,the applicant shall restore two areas of previously degaded embankment(as shown on Figure 1: Outfall Locatio»s cmd Embankment Restoratron Areas dated 6/7/06). Restoration shall entail slope stabilization including placement of topsoil and plantings of native species appropriate to the azea. Prior �'`�°t Attachment to Ordet oE Conditions# 64420 � �`�� Page 6of ,i5 e.. to the start of restoration activities,the applicant shall submit soil and plant specifications for review and approval by the Commission and/or the Conservatioo Commission Agent. ; 48. Prior to clearing of any vegetation with the 100-foot buffer zone,the Applicant shall cleazty mark all existing trees to be preserved(as shown on Figure 2:Location of Trees to be Preserved dated 6/7/06). Tree will be marked with surveyors tape. The applicant shall notify the Commission and schedule a site visit to review the identification and marking of the trees. During conshuction in these areas,the , contractor shall avoid damage to the designated trees and their root system,the e�ctent possible. Large I trces identified that cannot be preserved shall be replaced. Replacement trees will consist of saplings ' established on the embankment adjacent to the pond on a I:1 basis. Planted species must be native non- invasive species.Prior to planting,the applicant shall submit plant specifications for review and approval by the Commission and/or the Conservation Commission Agent. 49. Applicant shall install matting or jute mesh over the two embankment restoration azeas to further assist embankment stabilization. PERPETUAL CONDITIONS I 50. The applicant shall establish a deed restriction as a�upon at the June 8,2006 Sa1em Conscrvation I ' Commission Meeting on those poRions of the site as shown on Figure 3:Limits ofArea Subject to the Commission Restriction dated 6/7/06). Permitted activities on these deed-restricted azeas shall be consis[ent with passive recreation and wildlife intetpretation. 51. The drainage structures sha11 be maintained as outlined in the approved Operation&Maintenance Plan for YMCA at Leggs Hill (dated May 25, 2006), and shall be the responsibility of the applicant/property owner. � �o � � CITY OF SALEM ��r� CONSERVATION COMMISSION Mr. Walter Power, Chairman Planning Board City of Salem 120 Washington Street Salem, MA 01970 March 1, 2007 Dear Chairman Power, On behalf of the Conservation Commission I'm writing to inform you that the Commission reviewed the ro p posed YMCA L.eggs Hill project and a roved the proposed changes noted on the plan tided YMCA at Leggs Hill: Grading, Drainage, and Erosion Control Plan-Southwest Signed and stamped by Christopher Nowak dated 2/15/07. Carey Duques, the Conservation Agent, and I met wi[h the project LSP and Vice President of GEI and Bill Jennings from Planning Construction Management on February 28, 2007 to discuss the sampling that has been done to date. We reviewed the methods that were used, the chemicals tested for, and the results obtsined. On behalf of the Commission, I would like to state th�t eiven that the levels ��e below reportable conditions we aze content with the project continuing as approved by the Commission. Please feel free to contact myself or Carey Duques with any questions reg;v-ding this project. Sincerely, ��.. � �✓,,�:�:��, � Kevin P. Cornacchio Chairman ' CC: Lynn Duncan, Director of DPCD Bili Jennings, WJJ Plannino Construction �fanagemen[ 120 �Vr.st�incro;v SraeeT, Sni.cs�, ��I:.ss,�cric,e�rrs O1�)70 • Tri.: 978.i45.9595 F.�:<: 978.7=}0.040�1 . www.s.i�eatco.�i 0 � `� �. CITY OF SALEM �,�� CONSERVATION COMMISSION June 13, 2006 George W. Atkins, Esq. 59 Federal Street Salem, Massachusetts 01970 Re: Ordet of Conditions—DEP #64-420 YMCA at Leggs Hill, Leggs Hill Road, Salem, Massachusetts Deaz Attorney Atkins: Enclosed, please find the Order of Conditions for the above referenced project. Following the 10-day appeal period (June 18, 2006), this document and the attached Special Conditions must be recorded at the Essex County Registry of Deeds. Once recorded, please return a copy of Page 9 of the Order, which will indicate to [he Commission that the document has been recorded. ff you have any further questions, please feel free to contact me at 978.745.9595 x 311. Sincerely, Cr.Grr-------� Fr k Taormi P nner/Harbor Coordinator Enclosures 1ZO WASHINGTON STREET, SALEM, NIASSACf1USETTS �197� •Teu 978.745.9�95 FaY: 978.740.0404 � WWW.SALEM.COM �-.....� _ �1. Massachusetts Department of Environmental Protection I Bureau of Resource Protection - Wetlands � Stormwater Management Form ; Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 C. Submittal Requirements Online Users: DEP recommends that applicants submit this form, as well as, supporting documentation and plans, Include your with the Notice of Intent to provide stormwater management information for Commission review document consistent with the wetland regulations(310 CMR 10.05(6)(b))and DEP's Stormwater Management transaction Policy(March 1997). If a particular stormwater management standard cannot be met, information number should be provided to demonstrate how equivalent water quality and water quantity protection will be (provided on provided. DEP encourages engineers to use this form to certify that the project meets the stormwater ' your receipt management standards as well as acceptable engineering standards. For more information, consult ' page)with all the Stormwater Management Policy. �i supplementary information you submit to the �ePartment. D. Signatures YMCA of the North Shore 1 a � Applicant Name Date � ��V ; Signa e ` Vanasse Hanqen Brustlin Ina �' � �i Representatme(if any) Date �� Signa re i i Wpalartn3 tloc•Stortnwafer hWnagement Form•rev.3/1/05 Page 5 of 5 Massachusetts Department of Environmental Protection Pro�a�a,by oEp ;_ !� � Bureau of Resource Protection - Wetlands oEP FieN�m�e� � ' � WPA Form 3 - Notice of Intent ` � � � ; , DocumentTransacUonNumber Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 �Saiem �� criRo�, 1 F. Fees The fees for work proposed under each Notice of Intent must be calculated and submitted to the ; Conservation Commission and the Department(see Instructions and NOI Wetland Fee Transmittal Form). No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, � federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts ' Bay Transportation Authority. Applicants must submit the following information(in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form)to confirm fee payment: 1.Municipal CheGc Number 2.Check date �'��. 3.State Check Number 4.CheGi date �I ' Vanasse Hangen Brustlin lnc. 5.Payor name on check:First Name 6.Payor name on check:Last Name G. Signatures and Submittal Requirements ' I hereby certify under the penalties of pery'ury that the foregoing Notice of Intent and accompanying plans, documents,and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to the 'I requ' ents of M.G.L. c. 131, §40. Notice must be made in writing by hand delivery or certified mail ; urn re ei t re st )t all butters within 100 feet of the property line of the pr 'ec,�t,loc/a,t�ion. ; g� ure of Appliran Date — I � ' 4 ' e f P rty 0 r f differe Date �� 2 ob � Signalure of Representative(if any) � Date � For Conservation Commission: Two copies of the completed Notice of Intent(Form 3), inciuding supporting plans and documents;two copies of pages 1 and 2 of the NOI Wetland Fee Transmittal Form;and the city/town fee payment must be sent to the Conservation Commission by certified mail or hand delivery. ' For DEP: ' One copy of the completed Notice of Intent(Form 3), including supporting plans and documents;one copy of ' pages 1 and 2 of the N01 Wetland Fee Transmittal Form; and a copy of the state fee payment must be sent to ' the DEP Regional Office(see Instructions)by certified mail or hand delivery.(E-filers may submit these electronically.) Other: If the a licant ha ch s ecked the" es"box in an PP y y part of Section D, Item 3, above, refer to that section and lhe Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by lhe applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. wpaform3.doc•rev.3/29/05 Page 7 of 7 � Transportation I Land Development . , ' Environmental � ' Services �� • I � imag�nat�on I�nnoVatlon I enefgy Geafing results for our clients and benefits for our communifies iTana.ccn Nan�nn Rr��stluz, nc" October5,2006 Ref: 09044.00 Mr.Kevin Cornacchio,Chairman Salem Conservation Commission , 120 Washington Street ' Salem,MA 01970 Re: Nofice of Project Change I YMCA at Leggs Hill Leggs Hill Road �i Salem,Massachusetts I DEP File No.64-420 Dear Chairman Cornacchio and Commissioners, On behalf of YMCA of the North Shore,Vanasse Hangen Brustlin,Inc. (VHB) respectfully submits the enclosed revised plan(Sheet G5.1,dated Apri127,2006,revised September 11, 2006)as a Notice of Project Change.This submission is made in compliance with General Condition Number 13 and Special Condition Number 15 of the Order of Conditions (issued June 8,2006).The YMCA is inquiring as to whether the proposed change will require a formal amendment to the Order of Conditions. The proposed change is related to the stormwater management system outlet located adjacent to the existing pond in the southem portion of the site.The original design included the 15-inch RCP drain pipe running parallel to the retaining wall for a length of approximately 75 feek The revised design moves the drain pipe to the west,away from the retaining wall.The revision has been made to avoid any future conflicts with the structural integrity of the retaining wall should the drainage pipe ever need repair or replacement. The outlet design has also been advanced to"construction level"plans and includes additional detail not shown in the original approved plan set.The plan also incorporates the requirement for double catch basin grates within the cul-de-sac,as required in Special Condition Number 43 of the Order.No changes have been made to the drainage design with respect to the volumes or rates of treated stormwater discharging at this location.We believe that the proposed change does not consHtute a significant variance from the original approved design. The YMCA requests that the Commission allow this minor desig�change without the need for a formal amendment to the Order of Condirions. 101 WalnutSVeet Post Office Box 9157 Watertown, Massachusetts 02471-9151 617.924.1770 . FAX 677.924.2286 \\vhb\proj\WaM1LD\03044.00\das\letters\ConComOutlecLetter10-9-06.doc email: info@vhb.com www.vhb.com Mr. Kevin Cornacchio Project No.: 09044.00 October 5,2006 Page 2 Should you have any questions regarding this request or the revised plan,please feel free to contact me at(61�924-1770. Very truly yours, VANASSE HANGEN�INC. Matthew Varrell,PWS Senior Environmental Scienrist enclosure cc: YMCA of the North Shore DEP-NERO : \\vhb\proj\Wat-LD\09044.00\docs\letters\Con Com Outlet Letter lOh-06.doc � uP�la,� t/28/ob . 7�rn 1�d�Qi �EPs �e Ii1J� Vanasse Hangen Brustlin,Inc. Operations and Maintenance Plan YMCA at Leggs Hill This Operation and Maintenance Plan has been prepared in accordance with the Stormwater Management Policy developed by the DEP and CZM and is based on design and water quality issues pertaining to the proposed development. SItO YMCA at Leggs Hill Leggs Hill Road Salem,Massachusetts Site Developerl0wner YMCA of the North Shore 245 Cabot Street Beverly,MA 01915 Maintenance Supervisor YMCA Facility To be determined upon completion of construction Public Roadway and City of Salem associated drainage structures Operation and Maintenance Plan This Operation and Maintenance Plan includes details on pavement maintenance, stormwater system maintenance,and trash removal for the YMCA facility. Long- term maintenance of the roadway and its drainage structures will become the responsibility of the City of Salem. ' The YMCA site manager shall keep detailed records/documentation of all inspection and maintenance activities performed on the site.The logs shall be kept at the site in a maintenance log book. M�os�.o�re,o��o��oaM P�a� D-1 Attachment D-Operation and Maintenance Plan(May 2006) (ae�isea7 e« � I11U Vanasse Hangen Brustlin,lnc. Pavement Maintenance Sweeping is an effective initial treatment for reducing pollutant loading into stormwater.The parking lots and interior drives will be swept at least tcvice annually (fall and spring). Snow Management Plan Improper snow management can cause erosion in buffer zone or wetland resources, can be a source of contamination,and can impede the performance of the stormwatex management system.Snow plowed from paved surfaces at the site will not be stockpiled within the regulated wetland resources or buffer zone on the site.The project will utilize the landscape islands and the perimeter of the parking lot for snow storage(see Figure SM-1). Meltwater from snow storage areas shall be routed through and treated by the stormwater management system. Stormwater Mana ement S stem 9 Y All components of the stormwater management system for the proposed project will be inspected and maintained on a regulaz basis as described below. Catch Basins All catch basins will be inspected annually. Any sand,sediment,or debris(greater than one foot in depth)will be removed and disposed of in accordance with applicable regulations.Any structural damage or other indication of malfunction will be reported to the site manager.During colder periods,the catch basin grates will be kept free of snow and ice. Water Quality Unitsl Isolator Row Water quality units and the isolator row will be inspected annually and cleaned in accordance with manufacturer's specifications.Any structural damage or other indication of malfunction will be reported to the site manager. Trash Removal The on-site buffer zone area will be inspected for litter and trash on a quarterly basis. Any accumulated trash,litter and discarded materials in this area will be removed and disposed of properly. No disposal of materials will be permitted within wetland resources or buffer zone on the project site.This prohibition applies to trash,fill material,construction debris, grass clippings,and land landscaping debris,including collected leaves and branches. M:�oso�a oo��po�wo��oaM P�a� D-2 Attachment D-Operation and Maintenance Plan(May 2006) �aa�>,a�do� f - : ■�r�7 �llll Vanasse Hangen Brustlin,Inc. Reporting and Documentation The Site Manager shall be responsible for maintauung an accurate Maintenance Log. The Maintenance Log shall be available for inspecrion by members of the Salem Conservation Commission,or their designated agent,upon request. ! The Maintenance Log shall: 1. Document the wmpletion of required maintenance tasks. ' 2. Identify the person responsible for the completion of tasks. 3. Identify any outstanding problems,malfunctions or inconsistencies identified during the course oE routine maintenance. The Site Manager shall be responsible for ensuring that the scheduled tasks are appropriately completed as described in this Plan and recorded in the Maintenance Log. M:�oso,a noo-aoo�swouoaM P�a� D$ Attachment D-Operation and Maintenance Plan(May 2006) �a..�aai.ao� I ' �� Vanasse Hangen Brastlin,Inc � Site Maintenance Log , YMCA at Leg s Hill Leggs Hill Road Salem, Massachusetts Maintenance includes annual catchbasin,water quality unit,and isolator row inspection,annual (minimum) cleaning of catch basins,pavement sweeping twice a year,and quarterly trash removal. Activity Date Completed Completed Repair Needed Date of Repair Repaired by Supervisor BY YeslNo(describe) Verifcation �,aso�oo,�eoo�wouoaMP�a� D-4 Attachment D-Operation and Maintenance Plan(May 2006) (Revisetl)tlw _ y «,, �.� <;:> . � ` �\ F a'fy...� — `. —�{ Y a �* �1 ��\�� o l Qi� R,i 1 I �J� - i >4 G�F �. i = ,.m L0T77 Q_. LOT� �. i, __ __ �.i� PROPOSED LEGGS HILL VMCA �� ' �S' . _ , e � �r.�m �.,x 1,. I L�i ;t O _' uv n..+d o ; O � .� � _ � k. h �� _ _ m i ' PRINARY SNOW Faf9 STORACE (TYP.) _ .. � � .... . .., � : .:._.,.,�, y„� � v c b .� : t %: . "v A b a ia _ -__ T 2 f 6.� {i - � f r � � J �> > ��i - �. r' ��,',yc / 'i N� _ _ __ ____ �`#hQ� �' ��. �� i PRIMARYSNOW _ -_ ___ _ ` `� . . _ STOftAGE TYP. _ _ __— �'x \,. LOT 3 ' _'- _--=— � ' \ .y':i �' - ___________________________________________________ ____>____>-___<-___==__===__ - -_-- � -- ----_----------------------------------- - ,. � 1 -- _ _____ _""___ � � UNBO OT BLE � , / ' � � `\\ ' LOT 70 � F�j0T4 V"�y -_ .� � . ��. ` / � �. C ' . LOT 9 � .� ..,J. _ .. J�� , \ V i . .. .._- � I ay k.� �� . � ' rqesi.. , _ '. . ;� _ ` �'' ,_� —" e .�:o A �. �� LOT 8 / � � � � � �� e�, LOTS - � � —_ ' . � i � .�a .. F J��" . � � .' s:�� ,,, sc . / � , ` % � L0T 7 � .—. ,� � .. i ��'� P // ' " �� r r..b ' , ¢p � --., � / i ; LOT 6 �i � . , I 1 �� '- r' S �� igu�c SM-1 , May 2006 '�. a � ��.� " '�W`�` $t � eggs Hill YMCA � i � � vow Management Plan n u� 4,�d� cale:l"�0' l�, 4 �.+ h 'iv � � Comnutatinns . Projecr. �6$ �4!i,(. Nt�{C�k Roiect# !?'1<7`�''/ Laation: ��j�N( � ir¢A Sheet � of � '� Calculated by: �C� oate: r"a��c/r� � Checked by: Date: Ttle�'.sv�� UU(;1t(�/�;;1�;/;�lu� CNqN6E`� �O R�: — 'FCda� �1�1,ir�E "�;Ps�.�^J n,2c�,vilr r��;1.i,� (�F�o�-i Pce^__2iyK—� w' �{aC�iCs'�L� `�� rC�S'E.S 1�l 1lal.�as.�F � '�a�(��i N �hG-F°f� : �a°-- �.. �� Qt �cZo C , P � /� C ) � a-��- d•�� -�,, - o,�o - �13�3 ' 10-�� 0•�02 O,Su� - o.Zo'L. -�°� ' ' ��- ,u,��. ��St2. o�uy -o.Z�B � Il��y� �-�%:�;�L..,. l.Z�fl c;��,%?0 —c.�,�a.� - koitcol ' 2 { � � � � � `V'AT1 7•J �'.1'�l�c ' .f r..:. :L — � �I.t c� N�t:�+ AS ��t�'-�P��17E��...:� ' t''� �!'+J�,t,9rt " : ' Z-�� _W3�3 ��" . ! o.o� Fs' —. p,i2 i� Li•2tn!56�`;�r I � \O-�t�(L-. = a.-�..�'.�:.,�(,?...�_e. -- O,o u Fr � O.7 y �iv. I I g � P �4}�'�-,F+R'rL`�t'4'�..lY 'S� �'�, i ZS-�-;E��r�. � I► .c��y c,� � a, o3 � - 0,3� �,� I' �-f2�� F ' � i oo-ye�-z Y l c��,,,�!� i_c.� _ o o�f �= = p. v8 t,v � ' I �1'7�.z:c`��i.` .Y�•. �'I � i i IL""_-- ___"'___ _ ._ , mkg�idmshumanesccmpuuCare0m85 I, �nnnsre Hangen 8n�stlln. Inc i � , � � � �� , ', � � '� � � -� ; � ' � � � - � . . . � . . . . . - . , . . - Notice of Intent , � � � � ' ' � " , � ; � � , ' � � ( � YMCA at Leggs Hill _ . , l _ , � J�� . ., f , � Salem,_1Vlassaehusetts , � , s , , ; � : r Prepared for YMCA of the North Shore �" � . . Beverly, Massachusetts : Prepared by �BNanasse Hangen Brustlin, Inc , � ' Wateitown,Massachusetts " � ' \ J �' _ , \ , . � . � � � � ' � � � � v � � ` , , ' � . � t I , , � � ' !' ` i ' � , ` � � '� � � � , , , � �� . ' �, � � , - - _. � , . 1 Transportation ' Land Development � , , Environmental • Services • � � imagmat�on I mnova[mn I energy Creating results for our dients and benefits for our communities , � � � y4ZYlQ�SP HanaEYl�Y_7.LSLLZY4,lYLG._— Apri127,2006 ' Ref: 09044.00 ' Mr.Joseph A.O'Keefe,Chairman Salem Conservation Commission , 120 Washington Street Salem,MA 01970 � Re: Notice of Intent , Proposed YMCA at Leggs Hill Leggs Hill Road Salem,Massachusetts rDear Chairman O'Keefe and Commissioners, ' On behalf of YMCA of the North Shore,Vanasse Hangen Brustlin,Inc(VHB)respectfully submits the attached NoHce of Intent(NOI)for the proposed construcHon of an 88,525 square foot YMCA facility and subdivision roadway with associated appurtenances.A , portion of the work is proposed within the 100-foot buffer zone.No wetland resources will be altered by the proposed development.This NOI is filed under the Massachusetts Weflands Protecflon Act and the City of Salem Wetlands Protecfion Ordinance. , In compliance with the Act and the Ordinance,notificarion to abutters regarding this NOI has been made by certified,retum-receipt mail on this date.A copy of the abutter ' nofification form and certified list of abutters aze enclosed with the NOI. A check,made payable to the City of Salem in the amount of$537.50 to cover the town's share of the state filing fee,is enclosed.A check,made payable to the Commonwealth of , Massachusetts in the amount of$512.50,has been sent d'uectly to the DEP Lock Box for payment of the state's share of the filing fee. r , � 101 WalnutStreet Post Office Box 9157 . , Watertown,Massachusetts 02471-9751 617.924.1770 . FAX 677.924.2286 \\vhb\prq\Wat-LD\09044.00\reportsW07\NOlcoverlmerAoc email:info@vhb.mm www.vhb.com ' , ' Mr.Joseph A.O'Keefe Project No.: 09044.00 ' April 27,2006 Page 2 ' Please advertise this matter for public hearing at your next regularly scheduled meeting of the Conservarion Commission.Should you have any questions conceming this submittal or , require additional informaHon,please contact me at(61�924-1770. Very truly yours, ' VANASSE HANGE B�� INC. c�-6�/l�✓""�"CF(/ � Matthew Varrell,PWS Senior Environmental Scientist � Attachments cc: YMCA of the North Shore ' ' � ' � ' , ' ' �. 1 \\vhb\peq\WaFW\0904400\�eporls\NO[WOI cmer lettecdoc ' � Notice of Intent � � • !� � YMCA at Leggs Hill 1 � Salem, Massachusetts i�'� � � � � � �� Prepared for YMCA of the North Shore 245 Cabot Street Beverly,MA 01915 � Prepared by {��B/Vanasse Hangen Brustlin,Inc. Transportation,Land Development,Environmental Services 101 WalnutStreet ' � P.O.Box 9151 Watertown,Massachusetts 02272 617-924-1770 � "� ' � , � , ,� Apri12006 � � ' � � � Vanasse Hangen Brustlin,Inc . � Table of Contents �� Notice of Intent Forms � WPA Form 3 Stormwater Management Form Notice of Intent Figures � Site Location Map Massachusetts Natural Heritage Map i�` FEMA Map � � Attachment A-Notice of Intent Narrative....................................................................A-1 � Introduction............................................................................................................................A-2 SiteDescripfion......................................................................................................................A-2 WorkDescription....................................................................................................................A-4 � Mitigation Measures...............................................................................................................A-4 Regulatory Compliance........................................:.................................................:...............A-7 � Summary..............................................................................................................................A-10 I Attachment B—Filing Fee InformaHon.........................................................................B-1 Wetlands Fee Transmittal Form.............................................................................................8-2 ' �PY of Filing Fee Checks.....................................................................................................B-4 Attachment C-Abutter Information.............................................................................C-1 � Abutter Notification.................................................................................................................C-2 _ Project Abutters......................................................................................................................C-3 � Drainage Report(Bound separately) . Project Plans � � . � � � � �x�.w,imn�asouwQo-won.,won Table of Contents . � NOLNmEtt ' . � ., v� Vanasse Hangen Bxustlin,Inc. � • Notice of Intent Forms. � � � � � ■ ➢ WPA Form 3 � ➢ Stormwater Management Form I � t � � � � � � � r � ��4.��won Notice of Intent Forms � NOIAVEoc � � Massachusetts Department of Environmental Protect�on � Ivro Ced b�DEP', Bureau of Resource Protection -Wetlands � � � � � EP flfexMuin e`�'r �� WPA Foi'r11 3 - Notice of Intent v � � Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 �'"�o�m��T�4-��°� '"�;�be�a Salem � ' - cirylTown . '"'P°"a"`: A. General Information When filling out forms on ihe � � ,' computer,use �. project Location(Note: electronic filers wiil click on button for GIS locator): only the Wb key co move your Leggs Hill Road Salem 01970 wrsor-do not a.Sheet Address b.Ci /Town c.Zi Code use Me retum . �Y P � keY. Latitude and Longitude: 42d 2925' 70d 53.28' � d.latitude e.Longitude � 30 83 f.Assessors Map/Plat Number . g.Parcel/Lot Number � � 2. Applicant: Jack Meany YMCA of the North Shore �� a.Pirst Name b.Last Name a Company — Noie: 245 Cabot Street Before d.Maihng Address . completing this Beverly MA 01915 � fortn consult e.Ciryffown f.State your local g.Zip Code conservauon (g7g)g22-0990 meanyj@northshoreymca.org Commission h.Phone Number i.Fax Number j.Email address � regarding any � municipal bylaw 3: Property owner(if different from appficant): ❑ Check if more than one owner or ordinance. a.First Name b.Last Name a Company � � d.Maihng Address � � e-��b�To� f.Sfate � g.Zip Cotle h.Phone Number i.Fax Number j.Email address _� 4. Representative(if any): Vanasse Hangen Brustlin, Inc. ` a.Frm � Matthew Varrell b.Contact Person First Name a Contact Person Last Name 101 Walnut Street d.Mailing Address W atertown MA 02471-9151 �� e.CiryRown f.State � g.Zip Code �617)924-1770 (617)923-2336 mvarrell@vhb.com h.Phone Number i.Fax Number j.Email address � 5. Total WPA Fee Paid(from NOI Wetland Fee Transmittal Form): $1,050.00 $512.50 $537.50 � a.Total Fee Paid b.State Fee Paid � a City/Town Fee Paid 6. General Project Description: Construction of an 88,525 square foot YMCA facility with associated appurtenances and a ' subdivision roadway with associated grading for future house lot development. �. � wpaform3.doc•rev.3129105 Page i of 7 � Massachusetts Department of Environmental Protection p�;�a��y oEa� <# y � Bureau of Resource Protection -Wetlands ��p��'e Number .� .°�� WPA Form 3 - Notice of Intent �� '� � � k �, c�a�..��-+� e s Wh�jDOWmenf7 nsactl9,', - ke"r' Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 �s i m�� ciryliown � A. General Information (continued) 7. Project Type Checklist: � a. ❑ Single Family Home b. ❑ Residential Subdivision c. ❑ Limited Project Driveway Crossing d. � Commercial/Industrial � e. ❑ Dock/Pier f. ❑' Utilities g. ❑ Coastal Engineering Structure h. ❑ Agriculture—cranberries, forestry � i. ❑ Transportation j. ❑ Other � 8. Property recorded at the Registry of Deeds for: ; Essex 54 a.County ' b.Page Number 7598 � � c.Book d.Certificate#(if registered land) 9. Has work been performed on the property under an Order of Resource Area Delineation involving 1 Simpiified Review within 3 years of the date of this application? a.❑ Yes b. � No � 10. Buffer Zone Only- Is the project located only in the Buffer Zone of a bordering vegetated wetland, inland bank, or coastal resource area? a. � Yes-answer 11 below, then skip to Section C. � b. ❑ No-skip io Section B. " If yes, no Notice of Intent or Request for Determination of Applicability may be filed for work within the � 50-foot-wide area in the Buffer Zone along the resource area during the three-year term of an Order of Resource Area Delineation, or any Extended Order, or until the applicant receives a Cert'rficate of Compliance, whichever is later. � 11. Buffer Zone Setback—For projects that involve work only in the buffer zone, select the applicable adjacent resource area(check one): � a. ❑ BVW b. � inland bank c. ❑ coastal resource area The distance between the closest project disturbance and the associated resource area is: � d.sinearfeet - � � wpaform3.doc•rev.3/29/05 � Page 2bf 7 �. � � \ Massachusetts Department of Environmental Protectwn Pio.'v�ae"�"u'oEPr� ,� �� - 1�— Bureau of Resource Protection -Wetlands �h"� ��'� � ; \ EPFIe,�NaYbeY`T��;� ��; WPA Form 3 - Notice of Intent £ -��k�� .. DocumenTY2ns�achon._. .Num�b�� Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem �' - ciryrrown B. Resource Area Effects � t. Iniand Resource Areas Check all that apply below. Attach narrative and any supporting documentation describing how the � project will meet all performance standards for each of the resource areas altered, including standards requiring consideration of alternative project design or location. Online Users: Resource Area Size of Pr000sed Alteration Proposed Reolacement(it anv) � Include your document transaction a. ❑ Bank t.iinear feet 2.linear feet ' number b. ❑ Bordering Vegetated � (provided on Wetland 1.square feet 2.square feet yourreceipt page)with 811 �.❑ Land Undef �,square feet 2.square feet supplementary Waterbodies and ; information you Waterways 3.w6icyards dredged submit to the d. ❑ Bordering Land Department. Subject to Flooding t.square feet z.square reet ,� 3.cubic feet of flood storage lost 4.cubic feet of flood storage replaced e. ❑ Isolated Land Subject to Flooding �.square feei ,, � 2.cubic feet of flood storage lost 3.cubic feet of flood slorage replaced � . f. ❑ Riverfront area� 1.Name of Waterway(if available) � t W idth of Riverfront Area(check one): ❑ 25 ft.-Designated Densely Developed Areas only � ❑ 100 ft. -New agricultural projects only � ❑ 200 ft.-All other projects z.Total area of Rivertront Area on the site of the proposed project: square Feet � a.Proposed aiteration of the Riverfront Area a.Total Square Feet b.Square Feet within 100 k. - c.Square Feet belween 100 R and 200 ft. ra. Has an alternatives analysis been done and is it attached to this NOI? ❑ Yes� No � s.Was the lot where the activity is proposed created prior to August 1, 1996? � Yes❑ No � � wpaform3.doc•rev.3/29/05 Page 3 of 7 ' Massachusetts Department of Environmental Protection w:�^a�a.byFo-P: : � :.,� Bureau of Resource Protection -Wetlands �� '`�` � ,� DEPFfe'Number .: � ' WPA Fo1'm 3 - Notice of Intent �--� �� j'�� Massachusetts Wetlands Protection Act M.G.L. c. 131, 40 �'o�""�"'"�'��'�� Um�a § Salem ciry/Town , B. Resource Area Effects 2. Coastal Resource Areas: � Check all that apply below. Attach narrative and supporting documentation describing how the project will meet all pertormance standards for each of the resource areas altered, including � standards requiring consideration of aiternative project design or location. Online Users: Resource Area Size of Proposed Alteration Proposed Replacement(if anv) Include your � document transaction a. ❑ Designated Port Areas Indicate size under Land Under the Ocean, below number (provided on b. ❑ Land Under the Ocean �.square feet your receipt � page)with aIl 2.Cubic yards dredged supplementary Indicate size under Coastal Beaches and/or Coastal Dunes informatio�you c. ❑ Barrier Beach below � submit to the Department. d. ❑ Coastal Beaches �.Square feet 2.Cubic yards beach nou�shment e. ❑ Coastal Dunes �,Square feel 2.Cubic yards dune nourishment � f. ❑ Coastal Banks 1.Linear feet g. ❑ Rocky Intertidal Shores i.square feet , h.❑ Salt Marshes �,Square feet 2.Sq ft restoradon,rehab.,or creation i. ❑ Land Under Salt Ponds �.square feet � 2.Cubic yards dredged ,�� j. ❑ Land Containing Shellflsh 1.Square feet 2.Square feet restora6on,rehab. ` k. ❑ Fish Runs Indicate size under Coastal Banks, inland Bank, Land Under the �� Ocean, and/or inland Land Under Waterbodies and Waterways, above 1.Cubic yards dredged � i.❑ Land Subject to Coastal Storm Flowage �.square feet � s. Limited Project: � Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR 1024 or 310 CMR 10.53? a.❑ Yes � No If yes, describe which limited project applies to this project: � b.Limited Prqed � wpaform3.doc•rev.3l29/05 - Page 4 of 7 � 11 � Massachusetts Department of Environmental Protectwn ProvldBa-n 4�Ea� Bureau of Resource Protection -Wetlands ��'' � '" ��-��- � �}bEP ile Nu'mber i �, '' "�� WPA Form 3 - Notice of Intent ��'��`�"�°� �.�.�� .��:`.2� �r,,;;D�{ne�nt,TfansaC6on N�u'`t�bgr��' Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Saiem � � ciryfTown C. Bordering Vegetated Wetland Delineation Methodology � Check all methods used to delineate the Bordering Vegetated Wetland(BVW)boundary: Online Users: i.❑ Final Order of Resource Area Delineation issued by Conservation Commission or DEP Include your (attached) � document transaction 2.❑ DEP BVW Field Data Form (attached) number (provided on 3.❑ Final Determination of Applicability issued by Conservation Commission or DEP(attached) t your receipt page)with all a. ❑ Other Methods for Determining the BVW Boundary(attach documentation): supplementary � information you a. ❑ 50%or more wetland indicator plants submit to the DepaRment. b. ❑ Saturatedlinundated conditions exist c. ❑ Groundwater indicators � d. ❑ Direct observation � For ali projects affecting other e. ❑ Hydric soil indicators Resource Areas, please f. [] Credible evidence of conditions prior to disturbance � attach a Bank I narrative e. Other resource areas delineated: explaining how D. Othe1- A licable Standards and Re uirements � the resource PP q area was delineated. 1. Is any portion of the proposed project iocated in estimated habitat as indicatetl on the most recent Estimated Habitat Map of State-Listed Rare Weiland Wildlife published by the Natural Heritage and � Endangered Species Program? a. ❑ Yes � No If yes, include proof of mailing or hand delivery of N01 to: Natural Heritage and Endangered Species Program � Division of Fisheries and Wildlife 2005 Route 135, North Drive b.Date ot Map Westborough, MA 01581 2. For coastai projects only, is any portion of the proposed project located below the mean high water line or in a fish run? a.❑ Yes ❑ No �f yes, include proof of mailing or hand delivery of NOI to: � Massachusetts Division of Marine Fisheries 251 Causeway Street, Suite 400 Boston, MA 02114 , b.� Not appiicable—project is in iniand resource area only 3. Is any portion of the proposed project within an Area of Critical Environmental Concern(ACEC)? a. ❑ Yes � No �f yes, provide name of ACEC(see instructions to WPA Form 3 or DEP Website for ACEC locations). Note: electronic filers click on Website. b.ACEC � wpaform3.doc•rev.3/29/OS � Page 5 of 7 � Massachusetts Department of Environmental Protection ��?��r� °�� I � Bureau of Resource Protection -Wetlands �oEa�7e N�ner� ' WPA FOI'm 3 — Notice of Intent ��`�� w ��Do�m�nt`"�C�a�6o�n Num..ber.? Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eaiem , � � ciry/Town ,� . D. Other Applicable Standards and Requirements Online Users: 4. Is an ortion of the site sub'ect to a Wetlands Restriction Order under the Inland Wetlands YP 1 � ' Include your Restriction Act(M.G.L.c. 131, §40A)or the Coastal Wetlands Restriction Act(M.G.L. c. 130, § 105)? documeM transaction a. ❑ Yes � No number (provided on �' your receipt 5. Is any activity within any Resource Area or Buffer Zone exempt from performance standards of the page)with all Wetlands regulations, 310 CMR 10.00. � supplementary information you a.❑ Yes � No If yes, describe which exemption applies to this project: submit to the ' Depaftment. b.Exemption � 6. Is this project subject to the DEP Stormwater Policy? a. � Yes ❑ No If yes, stormwater management measures are required.Applicants should compfete the Stormwater � Management Form and submit it with this form. b. If no, explain why the project is exempt: � � � � E. Additional Information � Applicants must include the following with this Notice of Intent(NOI). See instructions for details. � Online Users: Attach the document transaction number(provided on your receipt page)for any of the foliowing information you submit to the Department. 1. ❑ USGS or other map of the area(along with a narrative description, if necessary)containing � sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.) 2. ❑ Plans ident'rfying the location of proposed activities(including activities proposed to serve as � a Bordering Vegetated Wetland[BVW] replication area or other mitigating measure)relative to the boundaries of each affected resource area. a. ❑ Other material identifying and explaining the determination of resource area boundaries � shown on plans(e.g., a DEP BVW Field Data Form). 4. ❑ List the titles and dates for all plans and other materials submitted with this NOI. s. ❑ If there is more than one property owner, please attach a list of these property owners not � listed on this form. s.❑ Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. '" z ❑ Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 1 a. Attach NOI Wetland Fee Transmittal Form s.❑ Attach Stormwater Management Form, if needed. � wpafortn3.doc•rev.3/29/05 Page 6 of 7 � � � Apw-12-06 02 : 27P . P_02 � � proW�ied by OEP: . Massdachusetts Department of Environmental Pratection � - Bure�u pf Resource ProteCtion -Wetlands bEr�e N�mber � �� 1 WF�/�i Fo1'm 3 - Notice of Intent -��„�entYraa,actlonNumbrx Masshchusetts Wetlands Protection Act M.G.L. C. 131, §40 5aiem �� '_. � Gryrrown.. � ., . �. �@e3 Ttte f¢es for wOrk proposod under each Notica oFlntent must be Calculated and subrnitted to the � CAns�rvation Commission and the Departmenl(see insiructions antl N01 Wetland Fee 7ransmittal Fdrmj. ' � NO fitmg fea shall 6e assessed for projects aF any city, town,county,or district of the Commonwealth, . � I reco nized Indian tribe housin authorit ,municip�l housing authordy, o� the Massachusells � rederp�y g s Y BAy Pransportation Authority.� �. � A{�phqants must submit the following information(in addition to pages 1 and 2 of the NOI Wetland— FA��Yransm�ttal Form)lo conTirm fee paymont: 152223 _. —A�Ll.1, 20DE.—..._. .. _. .. --- t.�1�iiuPal Chede N�mber� ... 2.Chedc tlale , � _ 152224, .._.. . .. .. . i111,_.2006 . .__.. 3 ��al�Chedc Number 4��a V'n�e Hangon 6rustlin, Inc, ___._. �. . S.�ayM�ame on��[Flis�Nxme 6.Payo��ame on cl�eck lasl Nartia _ ' � ghatures and Submittai Requirements . . 1 hereay�ertify untler tho panalties o(perjury that ihe foregoing Notice ot Inlent and accompanying . plans,;dobuments,and supporUng data are true and complele lo the best of my knowletlge.I understand � � that ttte,donservation Gommission will place notification of this Notice in a Iceal nowspaper at the exper�e of lhe appliCant in accordanCe with the wellands regulations, 310 CMR 70.05(5)(aj. �. 1 furt r(tertify under penalties of parjury ihat all abutters were notifieri oi tliis applicdtion, pursuaot to the � reyui m nts of M. L.c.131, 40.Notice must be made in writing by hand cfelivery or cerlitied mail � . (r r i re est d)t I tters wi[hi 100 faet of the property line ot tho p oJec� ocation. �' 1 OSs -- - ---- -- .`f,�-�--- - ._ .... . I _ ' $I nl AppiiCan C�a� ' ' .. __ " _' ' '" .._" - . _._.... � ul P y Ow� � � diHpren UaW . -- - ��Z�Ob ..-- ' $j�na�re ol He(12senta4v4 Qf any) For C�n�ervation Commission: Two$pibs of U�o completed Nolice of Intent(Form 3),including supporting plans and dor,uinents;lwo copies � � uf�pa�es 1 and 2 of the NOI Wetland Fee Transmittal Form;and the cityllown fee payniNnt must 6e sent to lhe Gnns{rv9Uon Commission by cerGfied maii orhand delivery. I�� For P�Pt ' pne qopK ot the completed Notica of Intent(Form 3),including supporting plans anA documnnts;one copy of ' � �page�l �nd 2 of lhe NOI Wetland Fee Transmittal Form;and a copy of the state tee payment musl6e sent 10 lhe D .P�tegional OHice(see Instrucqons)by cerUfied mail or hand delivery.(E-tilers may;ubmit these electrGnidauy.) Othef: . in an art of Secllon D,Iten13;a6ove,ietor m�hat section and the " es"6ox � Ii the upplicant has�hecked tha y Y P . InsUVctipns for addi6onal submittai�equirements. � The qug ai antl copies must be sent slmuitaneously.Feilu�e by 1he applicanl lo send copies in a Gmely . manrlrr�ay resWt in dlsmissal Ut tho Notice of IntenL � ,� . wpatarm9.dor rev.3f27k75 PaUe 7 of 7 �. � I � Massachusetts Department of Environmental Protection � Bureau of Resource Protection -Wetlands ' � ' Stormwater Management Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 ' A. Property Information Important: When filling out 1. The proposed project is: � fortns on the computer,use a. New development � Yes ❑ No only the tab � key to move b. Redevelopment ❑ Yes � No your cursor- do not use the (If yes, disting�ish redevelopment components from retum key. c. Combination ❑ Yes � No new development components on plans). � ./fl�, I I 2. Stormwater runoff to be treated for water quality is based on the following calcu�ations: �I� � a.❑ 1 inch of runoff x total impervious area of post-development site for discharge to critical areas � � (Outstanding Resource Waters, recharge areas of public water supplies, shellfish growing areas, swimming beaches, cold water fisheries). Note: b. �0.5 inches of runoff x total impervious area of post-development site for other resource areas. � This November 2000 version of the Stortnwater � Management B. Stormwater Management Standards Fortn supersedes earlier versions DEP's Stormwater Mana ement Polic March 1997 includes nine standards that are listed on the including those 9 y� � contained in following pages. Check the appropriate boxes for each standard and provide documentation and � DEP's additionai information when applicable. Stormwater Handbooks. Standard#1: Untreated stormwater a.� The project is designed so that new stormwater point discharges do not discharge untreated �, stormwater into, or cause erosion to,wetlands and waters. Standard#2: Post-development peak discharges rates , a.❑ Not applicable—project site contains waters subject to tidal action. ' Post-development peak discharge does not exceed pre-development rates on the site at the point of discharge or downgradient property boundary for the 2-yr, 10-yr, and 100-yr, 24-hr storm. � b.❑ Without stormwater controls c.� With stormwater controls designed for the 2-yr, and 10-yr storm, 24-hr storm. � a, � The project as designed will not increase off-site flooding impacts from the 100-yr, 24-hr storm. � � � Wpatorm3.tlac•Stortnwater Management Form•rev.3/i/OS Page 1 of 5 � Massachusetts Department of Environmental Protection � � Bureau of Resource Protection - Wetlands � Stormwater Management Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Stormwater Management Standards (cont.) � Standard #3: Recharge to groundwater � Amount of impervious area(sq.ft.)to be infiltrated: 157,799 a.square feet Volume to be recharged is based on: � n. � The following Natural Resources Conservation Service hydrologic soils groups(e.g. A, B, C, D, or UA)or any combination of groups: 100 C � � 1.%of impervious area 2.Hydrologic soil group 3.%of impervious area 4.Hydrologic soil group 5.°/of impervious area 6.Hydrologic soil group 7.%of impervious area 8.Hydrologic soil group � c.❑ Site specific pre-development conditions �.Recnarye rate 2.vaume �_ d. Describe how the calculations were determined: � See Stormwater Manaqement Report , e. List each BMP or nonstructural measure used to meet Standard#3(e.g. dry well, infiltration trench). � Underground detention/infiltration basin with isolator row. — , , Does the annual groundwater recharge for the post-development site approximate the annual � recharge from existing sile conditions? f. ❑ Yes ❑ No Standard#4: 80%TSS Removal � a. � The proposed stormwater management system will remove 80°/a of the post-developme�t site's average annual Total Suspended Solids(TSS)load. � b. Identify the BMP's proposed for the project and describe how the 80%TSS removal will be achieved. Pavement sweeping, deep sump, hooded catch basins,water quality devices, infiltration system with isolator row—see Stormwater Management Report(Appendix C)for details on TSS removai. ,, Wpaform3.Eoc•Stormwater Management Form•rev.3/iN5 Page 2 of 5 , � � Massachusetts Department of Environmental Protection � Bureau of Resource Protection -Wetlands ' Stormwater Management Form Massachusetts Wetlands Protection ;4ct M.G.L. c. 131, §40 � B. Stormwater Management Standards (cont.) c. If the project is redevelopment,explain how much TSS will be removed and briefly explain why 80% � removal cannot be achieved. � � Standard#5: Higher potential pollutant loads See Stormwater Policy Handbook Does the project site contain land uses with higher potential pollutant loads Voi.I,page 1-23, � for land uses of a. ❑ Yes � No b. If yes, desEribe land uses: _ high pollutant loading(see � Instructions). ' c. Identify the BMPs selected to treat stormwater runoff. If infiltration measures are proposed, ' describe the pretreatment. (Note: If the area of higher potential pollutant loading is upgradient of a critical area, infiltration is not aliowed.) ' Pavement sweeping, deep sump hooded catch basins water quality devices infltration with isolator row. � � � � Standard#6: Protection of critical areas See Stormwater Will the project discharge to or affect a critical area? Policy Handbook - � � Vol.I,page I-25, � - for critical areas a.❑ Yes � No b. If yes, describe areas: (see � Instructions). . . ' c. Idenfrfy the BMPs selected for stormwater discharges in these areas and describe how BMPs meet restrictions listed on pages I-27 and I-28 of the Stormwater Policy Handbook—Voi. I: Pavement sweeping,deep sump hooded catch basins water quality devices infiltration with isolator � row. � � � Wpefpm3Aoc•Sbrmwater IAanagemeM Form•rev.3�1N5 . Pege 3 of 5 � Massachusetts Department of Environmental Protection � Bureau of Resource Protection -Wetlands � ' ' Stormwater Management Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Stormwater Management Standards (cont.) �, Note: Standard#7: Redevelopment projects components of � redevelopment projects which Is the proposed activity a redevelopment project? plan to develop previously a.❑ Yes � No n. If yes, the following stormwater management standards have been met: � undeveloped areas do not fall underthe scope � of Standard 7. � � c.The following stormwater standards have not been met for the following reasons: � � d. ❑ The proposed project will reduce the annual poilutant load on the site with new or improved � stormwater controi. ' Standard #8: Erosion/sediment control a. � Erosion and sediment controls are incorporated into the project design to prevent erosion, � control sediments, and stabilize exposed soils during construction or land disturbance. � Standard#9: Operetionlmaintenance plan � a. � An operation and maintenance plan for the post-development stormwater controls have been developed. The plan includes ownership of the stormwater BMPs, parties responsible for operation and maintenance, schedule for inspection and maintenance, routine and long-term maintenance ,� responsibilities, and provision for appropriate access and maintenance easements extending from a pubiic right-of-way to the stormwater controls. Operations and Maintenance Plan YMCA at Leggs Hill April 2006 � b.PlanlTiUe � c.Da�e d.Plan/Title e.Date � , , WpaPo�m3.tloc•Stortnwater Managemen�Form•rev.3/1I05 � Page 4 d 5 I� � � Ap�-12-06 02:27P P_03 � ' Masa�c usetts Department of Environmental Protection � Bureaiu �f Resource Pmtection-Wetlands � Storr�nnluvater Management Form � Mass�cf�usetts Wetlands Protection Act M.G.L. c. 131, §40 , : � � � _ ..._ ... ..--.... . _.._ C. St�btnittal Requirements Online Usere: ��P r�commends lhat applicants submit this form, as well as,supponing tlocumnn�ation and plans, � Induda your �.,n��ryo Nolice of Intont to provide stormwater managoment information for Cumm+ssion review document co0si�tent with the wetland ragulations(310 CMR 10.05(6)(b))and DEP's Stormw:ater Management transaction pu�icy(March 1997). If a parlicular stormwater managomenl slandard canno�be met,in(omiation number shQul be providad to demonstrato how equivalent water qualiry and water quantity proteclion will ho � (providod on prdvi$ed. DEP encourages engineers to use this form to certity that lhe project mCets the stormwater your receipl m�na�emeM standards as well as acceptable enginoering Slandards.For more informalion,consult page)wilh all thg S rmw3ter Management Policy. supplemen[ary ' � informatlonyou _ _... _...-------,—^— - Su6mit ro fhe ��-" oeAartment. D. S�gthatur@S Yn•7eC af the North Shore—_ - - — .-----.... �__.'�/ �' � � MI�i �Name� .. uatP � � � _ . . . ._ _. ... - ---- . . Si � re . � V �ne se hlangen 8rustlin, tnc. _ . . ... _.._ . �6--- �, n �e �tnative(ilanY) . �� s��natur^�li�=�{' � . .. . . ... -----. 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' 4T"� .,,�f69..�yi� f 6�� ef,'9 p T� .�.r��:�' ,�n � � �� . �,a�F�\, g �� , a�,1.�a•�,g��=��i;�°�c�..y'r�yj`C'��`,��ef,.�a�i•�'��_�bi�.`� -� . �'7�. O`�e^� .s l.m�e.,�ih�U"« r I�84C� �:.5'...b ti " �� Vanxssc Hangen Brus[lin,fnc. � • . 1 I 111 : 1 111 111 i� ��: I11 I ' . 1 . 1 I11 ' 1 � � I . 1 I � � � Vanasse Hangen Brustlin,Inc. � Attachment A � � Notice of Intent Narrative � � ➢ Introducrion ➢ Site Description ➢ Work DescripHon � ➢ Mitigation Measures ➢ Regulatory Compliance ➢ Sutnmary � ' ' � � � � , � , ' ��m��won A-1 Attachment A—Norice of Intent Nanaflve NO�Ner dw � � � � Vanasse Hangen Brustlin,lnc. � Attachment A � ' N�tice of Intent Narrative � This Norice of Intent is flled under the Massachusetts WeHands Protection Act , (M.G.L.Chapter 131,Section 40),its implementing regulaHons(310 CMR 10.00)and the City of Salem Wetlands Protection Ordinance. fIntroduction The Applicant,YMCA of the North Shore,is proposing the wnstrucfion of an 88,525 ' square foot YMCA facility with assaiated parking,ufilifies,landscaped areas and stormwater management system on Leggs Hill Road in Salem,Massachusetts. Additional work indudes the construction of a subdivision roadway for future house � lot construction.No individual house lot conshuction is proposed as part of this application.Work associated with the subdivision roadway is proposed within the 100-foot Buffer Zone to the Bank of an unnamed pond located on the site. ' Site Description � The site is a 19.54-acre parcel of undeveloped land on Leggs HID Road in Salem, Massachusetts(Figure 1).The project site is bounded by Leggs Hill Road to the north � and east,undeveloped property to the west,and residential properHes to the south. The Salem/Marblehead municipal boundary crosses the northeast and southeast portions of the property. ' Topography on the site varies from 121 feet(NVGD)in the forested upland areas,to 24 feet along the edge of the pond on the southern portion of the property.Portions of the site have been previously disturbed for the apparent stockpiling oE gravel and filL 1 � Wetland Resource Areas �,I , Wetland resource azeas were delineated in acwrdance with the Massachusetts , Wetlands ProtecHon Act 310 CMR 10.00 et seq.and with the 1987 Army Corys of � Engineers Wetland Delineation Manual. On October 5,2005,VHB environmental scienHsts placed sequenfially numbered flags along the limits of Bank associated with an unnamed pond.This pond is subjecf to the WPA and contains hvo regulated � resource types(as de[ined by the WPA Regulations(310 CMR 10.00))as follows: , ��umo�,+��,won A-2 Attachment A—NoHce of Intent NarraHve NOINar.�c � vf� Vanasse Hangen Brustlin,Inc. � ' ➢ Bank:As defined in 310 CMR 10.54(2)(a)&(c),a Bank is"...the portion of the land surface that normally abuts and confines a water body."This land � surface"...may be parHally or totally vegetated,or it may be comprised of exposed soil,gravel,or stone.""The upper boundary of a Bank is delineated as the first observable break in the slope or the mean annual flood level, ' whichever is lower." � ➢ Land Under Water Bodies and Watercvays(LUW W1:As defined at 310 CMR ' 10.56(2),LLJW W is the land beneath any creek,river,stream,pond or lake. The boundary of LUW W is the mean annual low water level. ...._......_..----..........................._._..---._..._...__............._...----..._.._...----..._._........._........_.._._... , Wetland 1 Wetland 1 is an unnamed pond located on the southern portion of the site and ' extending off property to the south.The pond outlets to a tributary of the Forest which is located a roxunatel 300 feet west of the site.The ond is s arsel River pp Y P P Y vegetated with water lily(Nymphaea sp.).No other emergent plants were observed , within the open water areas. The limits of on-site Bank were delineated with sequenrially rmmbered flagging from � B1-100 through B1-117.Vegetation along the bank adjacent to the pond includes red maple(Acer rubrum),bebb willow(Salir bebbiana),weeping willow(Salix babylonica), ash(Fraxinus sp.),gray birch(Betula populifolia),buttonbush(Cephalanthus occidental'u), , bayberry(Myrica pensylvanica),honeysuckle(Lonicera sp.),beggar flcks(Bidens sp.), and purple loosestrife(Lythrum salicaria).A rocky substrate is predominant along the Bank. � Wetland 1 is regulated as Bank and Land Under Water Bodies and Waterways (LUW W).A 100-fwt buffer zone extends horizontally ouhvard from the limits of , Bank.This resource is also regulated under the Salem Wetlands ProtecHon Ordinance and the federal Clean Water Act. _......._._...._..._._._._._._._.........................._._.....___............_........_.._..._.._..._......._........_...........__.._..__ ' 100 Foot Buffer Zone The buffer zone on the site consists of areas within 100-feet of the top of Bank.This , historically altered and re-vegetated area is characterized by the significant drop in elevaHon leading to the bank of the pond.Buffer zone vegetation includes red oak ' (Quercus rubra),quaking aspen(Populus tremula),bramble(Rubus sp.),oriental bittersweet(Celastrus orbiculatus),multiflora rose(ftosa multiflora),staghom sumac (Rhus typhina),poison ivy(Toxicodendron radicans),gray goldenrod(Solidago � nemoralis),and queen anne's lace(Daucus carota). � ��w.�m��wo� A-3 Attachment A—Norice of Intent Narrative , NOI-Ns.Eoc � � ' �B Vanasse Hangen Brus[lin,ln<. ' Rare Species Habitat , According to the Massachusetts Natural Heritage Atlas,neither Esfimated Habitats of Rare Wildlife nor Priority Sites of Rare Species Habitat occur on the site.No Certified Vemal Pools occur on or near the project site(Figure 2). II ' Floodplain ' According to the Flood Insurance Rate Map'(FIRM)for the site(Community Panel Number 250102 0005 B,City of Salem,August 5,1985),no portions of the site are subject to flooding during a 100-year storm(Figure 3).Therefore,no Bordering Land ' Subject to Flooding occurs on the site. Work Description 1 Work proposed at the site consists of construcfion of a YMCA facility with associated ' appurtenances and a subdivision roadway(to service future residenfial use).The majority of the work on the site will take place outside of the 100 foot buffer zone. ' The YMCA facility will indude an 88,525 square foot building with an outdoor pool, paved parking areas and driveways,and a wmprehensive stormwater management system.Addifional work during construcrion will include installarion of uriliries and ' landscaping. The proposed roadway is being constructed to provide site access for the YMCA ' facility as well as to provide access for future residential development on the property.Building pads for Euture residential development will be wnstructed with the roadway.The grading of the lots also allows the overall site have a cut/fill ' balance,thereby avoiding the need to unport or export material to/from the site.No residenrial home construction is proposed under this application. ' ' Work in Buffer Zone Work within the 100-foot buffer zone includes: t ➢ Construction of a small portion of the subdivision roadway; ➢ Installation of a retaining wall to avoid work within 25 feet of the pond; ' ➢ Installarion of a water quality device and drainage outlet with associated P�P�S% ➢ Rou h and final adin and soil stabilizarion•and , B S� 8 . ➢ Installation of erosion controls. ' �Federal Emergency Managemenf Agency,August 5,1985.Flood Insurance Rale Map,Cityof Salem,Massachusetts. ' Community-Panel Number 250102 00058. t ��„��mo�oumo�o-aw�awo� A-4 Attachment A—Notice of Intent Nazrative NOFNer.Eoc 1 Il1U Vanasse Hangen Brustlin,Inc t All work is proposed to occur at least 25 feet from the delineated wetland boundary. , The proposed drainage outlet will discharge treated stormwater collected from the westem half of the subdivision roadway. ' Mitigation Measures ' The project incocporates accepted erosion control pracrices to minimize and mitigate adverse impacts to downgradient wetland resource areas.Temporary construcHon unpacts will be minunized through the implementarion of an Erosion and ' Sedimentarion Control Program described below.The project complies with the standards of the Massachusetts Stormwater Policy�and will protect adjacent wetland resources from long-term stormwater impacts. ' Erosion and Sedimentation Control Program ' M erosion and sedimentarion control plan is proposed to minunize temporary and permanent water qaality impacts resulting from construcflon on the site.The plan ' incorporates Best Management Pracrices(BMPs)specified in the U.S.EPA's Stornt Water Management for Construction Activities manual'and contained in a manual developed by the Massachusetts Executive Office of Environtnental Affairs(EOEA)'. , These measures include the installation of temporary erosion and sedimentation controls and construction sequencing.Areas of exposed soil will be kept to a minimum and a permanent vegetative cover or other forms oE stabilization will be ' established as soon as pracricable. Proper implementarion of the erosion and sedimentation control program will: ' ➢ Minunize exposed soils through temporary mulching and/or temporary seeding; ➢ Place structures to manage runoff and erosion;and , ➢ Establish a permanent vegetaHve cover or other forms of stabilization as soon as practicable. The following erosion and sedunentation control BMPs are proposed for use at the ' site.The measures will be inspected on a weekly basis or immediately before/after precipitation events.The controls will be routinely maintained throughout the ' duration of the project.Any damaged controls will be repaired immediately(within 48 hours)of discovery. ' ♦ ' � TMA DEP and CZM,7997.StomrvvaferManagement,Volumes One and Txro. 3 MA EOEA,2003.Massachusens Erosion and Sediment ConWl Guidelines for Urban and Subu�ban Areas:A Guide for � � Planners,Designers,and Municipal Officials. , �. 4 Storm Water Management for Cansvuction Activdies;Developing Pollmion Preventlon Plans aM Best Management � Practices,U.S.Environmental Protection Agency,1992. ��won A-5 Attachment A—NoHce of Intent Narrative ' r+oi++�.eac . ' ' ILID Vanasse Hangen Brustlin,Inc. ' ..._......................._............._...._....................._........._........_............._..._...._.........................._...._.............._.............. Erosion Control Barriers ' Prior to any grotutd disturbance,a barrier of staked hay bales and siit fence will be installed at the downgradient lunit of work at the site.When necessary,addirional hay bale and silt fence barriers will be installed immediately downgradient of ' erosion-prone areas,such as the base of steep exposed slopes,at the top of steep vegetated slopes,and around the base of stockpiles,throughout the construction phase oE the project The barriers will be entrenched into the substrate to prevent ' underflow. ............................_..._.._.._......._..._..............._....._.._................_.........._..._.._.._............... ' Pavement Sweeping During conshvction,roads in the vicinity of the project site will be swept on an as ' needed basis.A sweeper will be kept on site or at a nearby locarion to facilitate this process. 1 _......................................................................................................................................_......._..........._..._._.._.... Stabilized Construction Entrance ' A stabilized construcHon entrance will be installed to prevent tracking or flowing of sediment onto Leggs Hill Road.These controls will consist of a 50-foot long pad of ' crushed stone that is at least four inches thick and is underlain by filter fabric. , _........... _.............._..._..............._...._....._...._....._.._........_............_........._....._............._ Catch Basin Inlet Protection ' The inlets of newly installed catch basins will be protected from sediment inflow during mnstrucHon by surrounding them with a barrier of staked hay bales or by ' installing Siltsacks"`'.A layer of filter fabric will be installed beneath the grates of the catch basins surrounded by hay bales.These protection measures will be inspected weekly and after every storm event and will be routinely maintained unHl the ' drainage area tributary to each inlet has been vegetarively stabilized and/or covered by pavement.Any sediment that collects behind the barrier or in the Siltsacks"`'will be removed and will be either reused onsite or disposed ot at a suitable ofFsite � location. I _..................._....................................._.......................__......._........._....................._._..._.._............._..._....... I ' Dewatering Protocol Any sediment-laden water that collects in trenches or other excavated areas will be ' pumped through a dewatering bag(Dirtbag""or similar)or to temporary dewatering basins prior to discharge.Dewatering bags will be surrounded by a barrier of staked hay bales to provide additional filtration.The bag shall not be placed upslope of areas ' that are devoid of stable surfaces(i.e.,pavement or vegetaHon). ' ��uaweoa<wo��,��swon A-6 Attachment A—Notice of Intent Narrafive NOFNe�.Nc 1 � IL7D Vanasse Hangen Brustlin,Inc. ' ................._..._.....__..............................._......_........__....._......_......._......__............_....._...._...._....._.........._............. , Temporary Soil Stabilization Areas of exposed soils that remain unstabilized for a period of more than 30 days will ' be stabilized through application of mulch or bonded fiber matrix.If mulch is utilized,it will be hydraulically applied and anchored with biodegradable netting or a tacking agent. ' _................................._.............._..._........._......................._......................_.......__........._....................__.............. Permanent Seeding ' Upon wmpleHon of final grading,any areas not covered by pavement,other forms of stabilization,or other methods of landscaping will be seeded with an erosion ' control/restoration seed mixture applied at a rate of 1 pound per 2,500 square feet. Depending on the slope,the seeded areas will be covered with mulch or bonded fiber matrix. ' Stormwater Management Program Under existing condirions,stormwater runoff from the southern porfion of the site � flows overland to the pond and then to the Forest River. Stormwater runoff from the northern and westem porrions of the site flows overland to the Forest River. ' Srormwater runoft from the eastem part of the site flows overland to the closed drainage system in Leggs Hill Road owned by the Town of Marblehead. _...._.............._......_........._............._.._......_......_..........._...................................__..._.._........._....._....-- ' YMCA Facility Under proposed conditions,stormwater runoff from the main portion of the site will ' be collected in a closed drainage system and conveyed to a subsurface detenHon/infiltraHon area which will discharge controlled ftows from the site. ' Runoff treated by an isolator row within the system prior to dischazging to the subsurface infiltration area. _......................._........_.........................................._..._..................._._......_......__........__.............._.... ' Roadway Drainage The stormwater runoff from the western porHon of the subdivision road will be ' collected in a closed drainage system and routed through a water quality device prior to being discharged in the vicinity of the existing pond. Runoff from the eastem ' portion of the subdivision road will be collected via a closed drainage system,routed through a water quality device and discharged to the existing closed drainage system located in Leggs Hill Road. Refer ro the Stormwater Management Report for ' addiHonal details on the proposed drainage system. 1 ��m�,�om��,wo� A-7 Attachment A—Norice of Intent NarraHve 1 N04NerEoc , • , � ' N� Vanasse Hangen Bmstlin,Inc. I 1 m Su mary ' The Applicant,YMCA of the North Shore,is seeking approval to mnstruct a YMCA facility and subdivision roadway on a 19.54-acre parcel of land on Leggs Hill Road in ISalem,Massachusetts.Work includes construction of the YMCA facility with ' associated appurtenances and a subdivision roadway For future residential development.No individual house lot construcHon is proposed as part of this I ' applicafion.The entire project has been designed to be in compliance with the Massachusetts Stormwater Management Policy.No regulated wetland resources are proposed to be altered by the proposed project.A comprehensive erosion and ' sedimentafion control program will be implemented throughout the wnshvction phase of the project minunizing unpacts to surrounding resource areas and neighboring property. ' The Applicant requests that the Commission find this proposal adequately protective of the Public Intere t ' s s identified in the Act and issue an Order of Conditions allowing ' the project to proceed as described in this NoHce of Intent. 1 ' 1 ' ' ' , ' ' ' ��,,,y�,��.��won A-8 Attachment A—Notice of Intent Narrative rvoi-rveraoc ' 1_ ' v� Vanasse Hangen Bn�stlin,Inc. � Attachment B � Filing Fee Information � � ■ ' ➢ Wetland Fee Transmittal Form ➢ Copy of Filing Fee Checks ' � I , ' II � � , ' ' , � , �M��,�oa�,�ogea��r,on B-1 Attachment B—Filing Fee Information Noi++s.eo� ' ' Massachusetts Department of Environmental Protection ' � Bureau of Resource Protection -Wetlands � NOI Wetland Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 , �mPorta�t: A. Applicant Information When filling out ' forms on the 1. Applicant: ' computer,use only the tab Jack Meany YMCA of the North Shore key to move a.First Name b.Last Name � � c.Company ' your cursor- 245 Cabot Street do not use Ihe d.Mailing Address return key. geverly MA 01915 � _�I � e.City/Town " L State g.Zip Code °° 5978)922-0990 ' h.Phone Number . � 2. Property Owner(if different): � ' a.First Name b.Last Name c.Company , ' d.Mailing Address � . e.City?own f.State g.Zip Cotle � ' h.Phone Number 3. Project Location: ' Leggs Hill Road Salem a.Sheet Address b.Cityfiovm ' ro ca�cu�ate g, Fees filing fees,refer to the category Notice of Intent(Form 3) or Abbreviated Notice of Intent(Form 4): fee list and , examples in the The fee should be calculated using the following six-step process and worksheet. Please see instructions for , filling out WPA �nstructions before filling out worksheet. , Form 3(NoGce of , Intent). Step 1fType of Activity: Describe each type of activity that will occur in wetland resource area and buffer zone. Step 21Number of Activities: Identify the number of each type of activity. ' Step 311ndividual Activity Fee: IdentiTy each activity fee from the six project categories listed in the instructions. ' Step 41Subtotal Activity Fee: Multiply the number of activities (identified in Step 2)times the fee per category(identified in Step 3)to reach a subtotal fee amount. Note: If any of these activities are in a Riverfront Area in addition to another Resource Area or the Buffer Zone, the fee per activity should be ' , multiplied by 1.5 and then added to the subtotal amount. Step SlTotal Project Fee: Determine the total project fee by adding the subtotal amounts from Step 4. Step 61Fee Payments: To calculate the state share of the fee, divide the total fee in half and subtract ' $12.50.To calculate the city/town share of the fee,divide the total fee in half and add $12.50. ' ' Wpafarm3.aoc•NOI wetland Fee Transmitlal Fam•rev.3/ilo5 . � Page 1 af 2 ' Il Massachusetts Department of Environmental Protection , � Bureau of Resource Protection - Wetlands NOI Wetland Fee Transmittal Form ' Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Fees (continued) ' Step 11Type of Activity Step 21Number Step Step 4lSubtotal Activity of Activities 3llndividual Fee , Activity Fee Category 3b 1 $1,050.00 $1,050.00 ' ' ' , Step 5/Total Project Fee: $1,050.00 ' Step 6/Fee Payments: � Total Project Fee: $1,050.00 a.Totai fee from Step 5 State share of filing fee: $ 512.50 ' � b.1/2 total fee less$12.50 City/Town share of filling fee: $537.50 � c.t/2 total fee pius$12.50 ' C. Submittal Requirements ' a.) Complete pages 1 and 2 and send with a check or money order for the state share of the fee, payable to the Commonwealth of Massachusetts. Department of Environmental Protection ' , Box 4062 Boston, MA 02211 b.) To the Conservation Commission: Send the Notice of Intent or Abbreviated Notice of Intent; , a copy of this form; and the cityltown fee payment. c.) To DEP Regional Office(see Instructions):Send a copy of the Notice of Intent or Abbreviated ' Notice of Intent; a copy of this form; and a copy of the state fee payment.(E-filers of Notices of Intent may submit these electronically.) , Wpafmm3.doc•N01 Wetlantl Fee Trdnsmitlal Fortn•rev.3/1/OS Page 2 M 2 ' , ' : 152224 ' VANASSE HANGEN BRUSTLIN� INC. CITIZENSBMK ' � MAssacHuserrs CHECKDATE 101 WAWUT STREET • PO BOX 9151 saonniio WATERTOWN, MASSACHUSETTS 02471 , Apnl1.1,2006 � Five�Hundred Twelve and 50/100 , nMouMr ,' - � _ $512:50.� ' Commonwealth of Massachusetts :' Department of Environmental Protection P=O. Box4062" �' � ' e�' e ,: Boston MA 02211 � , r �g ' � � . � � . �' ` � �m... . . . i._:. _ �s F - ..� � . o�,m,.a,_.., ��' i52224u• �: 21i070i75�: Li30161371�i' r "'�"°"�°s„""'�"` — .._ ___ ------ _ ----_ __. —._ - -- ..._..._ _ ' ' 152223 VANASSE HANGEN BRUSTLIN INC. c'T`�E"5g""" � MnssncHus�'rs CHECKDATE 101 WALNUT STREET • PO BOX 9151 s-�onnuo ' WATERTOWN, MASSACHUSETTS 02471 , April 11, 2006 , � � ' - �� - } ' �. � y : '.. � � � � - u -?i Fwe Flundred Thirty Seven and 50/100 < �, �- � ,,„, ` nMouNT �^ � , ,� < � � , :.r:� f S � " � ` " �537 50 � � � _ � �� -'. ' � � City of:Salem � - �� 120 Washington Street ' � � �� _' g,v�� • .,r , � ,,.��• . � Salem Co�servation Commission �`�"k�� , Salem City HaII Annex � E ` '�* � x '. ��" �Saleni MA .01-970 . � �� l p /]—1 _.w ��' l 5 2 2 2 3u■ i: 2 i LO 70 17 5�: ■ � �O �O � � 1 ■�� A�HORII£OSIGNANft£ � Q w�mevauvQ . , ' ' ' ' ' ' v� Vanasse Hangen Bcwstlin,Inc � '� � Attachment C � , Abutter Information � � ■ ' ➢ Abutter Notificarion ➢ List of Abutters ' ' ' ' ' ' ' ' ' ' ' ��mona,�w�a�n.won C-1 Attachment C—Abutter Information rwu�aceoc �� ' . ' ' ' v� Vanasse Hangen BrusHin,Inc. 1 ' NOTIFICAT[ON TO ABUTTERS UNDER THE MASSACHUSETTS WETLANDS PROTECTION ACT AND THE SALEM WETLANDS PROTECTION ORDINANCE ' In accordance with the second paragraph of Massachusetts General Laws Chapter 131,Secrion 40 and , the Salem Wetlands Protecrion Ordinance,you are hereby notified of the following: The Appficant,YMCA of the North Shore,has filed a Norice of Intent with the Salem Conservation , Commission seeking permission to work in Areas Subject to RegulaHon and Protection Under the Wetlands ProtecHon Act and the Ordinance. ' This work is proposed on Leggs Hill Road in Salem,Massachusetts.Work proposed under this NoHce I of Intent includes construcfion of a 88,525 square foot YMCA facility with associated appurtenances and a subdivision roadway.Associated work includes grading to facilitate futute house lots and the i ' construcHon of a swimming pool,parking lot and driveways,installafion of uHlifies,a stormwater management system,and landscaping. ' Copies of the Norice of Intent may be examined at the Salem Conservafion Commission office located in the Salem City Hall Annex,120 Washington Street between the hours of 8:00 AM to 4:00 PM, Monday through Wednesday,8:00 AM to 7:00 PM Thursday,and 8:00 AM to 12:00 noon on Friday. ' For more informarion,please call the Salem Conservaflon Commission at(978)745-9595 x311.The NoHce of Tntent may also be examined at the offices of Vanasse Hangen BrusHin,Inc.by appointment. For more information call Matthew Varrell at(61�9241770. ' Copies of the Norice of Intent may be obtained from the Salem Conservafion Commission or by , calling Matthew Vanell at Vanasse Hangen Brustlin,Inc,at(617)9241770.You may be charged for the cost of the copy. 1 Notice of the Public Hearing,including its date,time and place,will be published in the local newspaper at least 5 days in advance,and will be posted in the Salem City Hall not less than 48 hours �' in advance of the Hearing. You may also contact the Department of Environmental Protecfion Northeast Regional Office at , (978)694-3200 for more information about this application or the Wetlands Protecrion Act. , ' , ' �Mrv.,�vmo�.��v+on G2 Attachment C—Abutter Information NOHI>.Ex ' � . .. . . . ..._. , , h .... . . .... _ . � ,..., „ t...__ . _.. _ _. m . _ _ � up. N A �df.. !{. t� �5��{3 :. k i t , , . m , . � . . . , . .. i r. • j, .� � ;� . .... '. 1, � .: '.� :' .,. a. ... .... .. .� ' : ParcellD Locatton Owner Co-Owner Mailinp Address Cftv State Zip 30-0050-0 445 �LORING AVENUE MARBLEHEAD TOWN OF WATER&SEWER COMMIS: P O BOX 1108 MARBLEHEAD MA 01945 30-0083-0 LEGGS HILL ROAD� YMCA OF THE NORTH SHORE,INC 245 CABOT STREET BEVERLY MA 01915 � 30-0085-0 REAR LINDEN AVENUE THINK RINK INC C/O TOWN CIERK TOWN HALL SWAMPSCOTT MA 01907 � 30-0088•0 19 LINDEN AVENUE DORE PETER A � DORE JUDITH M 19 LINDEN AVE SALEM MA 01970 �'30-0089-0 21 �INDEN AVENUE KIER4N JAMES H JR KIERAN VIRGINIA M 21 LINDEN AVENUE SALEM MA 01970 � �30-0090-0 23 LINDEN AVENUE BOUCHARD ROBERT M BOUCHARD ELLEN R 23 LINDEN AVENUE SALEM MA 01970 30•OD91,0 ..25. LINDEN AVENUE �� BOUCHARDROBERT L BOUCHARD ELIZABETH G 145 TEDESCO STREET� MARBLEHEAD MA 01945 End of Report � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Marblehead Abutters List Parcel Location Owner Co-Owner Mailing Address City State Zip 16-43-0 29 Leggs Hill Road Robert Gerald Fox,Trustee Judith Bette Fox,Trustee 1717 Peregrine Pt Dr . Sarasota FL 34231 16-98-0 28 Leggs Hill Road Hilary J Rockett Jr, Trustee C/O Kent D. Larson et al 28 Leggs Hill Road Marblehead MA 01945 16-9A-0 24 Leggs Hill Road Peter C Abbruuese Ruth A Abbruzzese 24 Leggs Hill Road Marblehead MA 01945 , 16-10A-0 20 Leggs Hill Road Dmitri M Menn Steven J Menn 20 Leggs Hill Road Marblehead MA 01945 16-28-0 18 Leggs Hill Road Nicholas D Casey Genevieve V Casey 18 Leggs Hill Road Marblehead MA 01945 16-27-0 14 Leggs Hill Road Joanne M Foss Sandra Picariello 16 Alexander Circle Marblehead MA 01945 16-26-0 12 Leggs Hill Road Richard J Matthews Cheryl A Matthews 12 Leggs Hill Road Marblehead MA 01945 16-42-0 1 Londonderry Road Bernard Kummins Evelyn L Kummins 1 Londonderry Road Marblehead MA 01945 16-41-0 5 Londonderry Road Elaine S Ventola et al C/O Timothy M Cronin et al 5 Londonderry Road Marblehead MA 01945 16-11-0 17 Mystic Road Everett W Henderson Priscilla G Henderson 17 Mystic Road Marblehead MA 01945 16-10-0 21 Mystic Road Forest City Residential Group 38 Sidney Street Cambridge MA 01945 16-7-0 16 Mystic Road Albin W Rynkowski Trustee 16 Mystic Road Marblehead MA 01945 16-6-0 14 Mystic Road James W Gay Betsy J L Gay 14 Mystic Road J Marblehead MA 01945 16-'12-0 15 Mystic Road Edward L Madow Phyllis E Madow 15 Mystic Road Marblehead MA 01945 16-5-0 12 Mystic Road Mark Lev Carol Radack Lev 12 Mystic Road Marblehead MA 01945 16-13-0 13 Mystic Road Randy D Mimller Shana C Miller 13 Mystic Road Marblehead MA 01945 16-4-0 5 Florence Road Geoffrey R Lemieux Patricia Drew Jenkins 5 Florence Road Marblehead MA 01945 16-3-0 7 Florence Road Stephen Schillinger Kimberly Schillinger 7 Florence Road Marblehead MA 01945 16-2-0 9 Florence Road Patricia F Ellison 9 Florence Road Marblehead MA 01945 18-1-0 2 Londonderry Road Olga G Stratouly 3223 NE 36th Street G-5 Ft. Lauderda FL 33308 18-19-0 1 Angenica Terrace Jeffrey S Zunick Lori-Anne Zunick 1 Angencia Terrace Marblehead MA 01945 18-20-0 2 Victoria Lane Eleanor A Fafel 2 Victoria Lane Marblehead MA 01945 18-30E-0 4 Victoria Lane Melissa S MacDonald et al C/O Alex V Sokol et al 4 Victoria Lane Marblehead MA 01945 18-30E-0 6 Vicroria Lane Jerri I Sher 851 N San Vincente Blvd Apt 101 Los Angeles CA 90069 16-47-0 '19 Leggs Hill Road Peter C Abbruzzese C/O Theodore M Lunii 19 Leggs Hill Road Marblehead MA 01945 35-4-0 63 Leggs Hill Road Donald W Peaslee et al C/O Donal W Peaslee truste 63 Leggs Hill Road Marblehead MA 01945 35-6-0 67 Leggs Hill Road Michael R Bouchard Judy M Bouchard 67 Leggs Hill Road Marblehead MA 0'1945 35-5-0 2 Riverside Drive Mark Goldenberg 2 Riverside Drive Marblehead MA 0'1945 r ' v� Vanasse Hangen Bn�stlin,Inc. � Attachment D � Operations and Maintenance Plan � � ■ , ➢ Operations and Maintenance Plan ➢ Site Maintenance Log ' ' , ' ' 1 1 , ' ' , �u�mo9o<.ou�,��wo�wo�- D-1 Attachment D-Operation and Maintenance Plan(Apri12006) Nar.aoc ' ' � � ' �� Vanasse Hangen Brustlin,Inc. � Operations and Maintenance Plan � YMCA at Leggs Hill � ' This OperaHon and Maintenance Plan has been prepared in acwrdance with the Stormwater Management Policy developed by the DEP and CZM and is based on design and water quality issues pertaining to the proposed developmenk ' .Slt@ ' ' YMCA at Leggs Hill Leggs Hill Road Salem,Massachusetts ' Site Developer ' YMCA of the North Shore 245 Cabot Street Beverly,MA 01915 , Maintenance Supervisor To be determined u on com letion of construction. I P P ' Operation and Maintenance Plan This Operation and Maintenance Plan includes details on pavement maintenance, ' stormwater system maintenance,and trash removal.Each of these items is described below. , The site manager shall keep detafled records/documentafion of all inspection and maintenance activifies performed on the site.The logs shall be kept at the site in a maintenance log book. , Pavement Maintenance ' Sweeping is an effective initial treatment for reducing pollutant loading into stormwater.The parking lots and interior drives will be swept at least twice annually ' (fall and spring). ��.�,��,wo�wo� D-2 Attachment D—Operation and Maintenance Plan(April 2006) Nar.Ox ' 1 � � Vanasse Hangen Brustlin,Inc. t , Snow Management Plan ' Improper snow management can cause erosion in buffer zone or wetland resources, ' can be a source of contaminarion,and can impede the performance of the stormwater management system.Snow plowed from paved surfaces at the site will not be stockpiled within the vegetated wetland resources on site.Snow storage shall be on paved areas to allow melt water to be routed through and treated by the stormwater , management system. Stormwater Management System ' All components of the stormwater management system for the proposed project will ' be inspected and maintained on a regulaz basis as described below. Catch Basins All catch basins will be inspected annually.My sand,sed'unent,or debris(greater 1 Ill removed and dis osed of in accordance with than one foot in depth)w be p , applicable regulations.Any shvctural damage or other indication of malfunction will be reported to the site manager.During colder periods,the catch basin grates will be kept Eree of snow and ice. ' � Water Quality Units/isolator Row Water quality units and the isolator row will be inspeMed annually and cleaned in ' accordance with manufacturer's specificarions.Any structural damage or other indication of malfuncHon will be reported to the site manager. ' Trash Removal The on-site buffer zone area will be ins ected for litter and trash on a uarterl basis. F 4 Y Any accumulated trash,litter and discarded materials in this area will be removed ' and disposed of properly. No disposal of materials will be pertnitted within wetland resources or buffer zone ' on the project site.This prohibition applies tq frash,611 material,construction debris, grass dippings,and land landscaping debris,including collected leaves and ' branches. Reporting and Documentation ' The Site Manager shall be responsible for maintaining an accurate Maintenance Log. t The Maintenance Log shall be available for inspection by members of the Salem ConservaHon Commission,or their designated agent,upon request. 1 �vae«ma�mwo«.00b,o�,won�o�- D-3 Attachment D—Operafion and MaintenancePlan(Apri12006) Nar.Ex ' ' 1 �B Vanasse Hangen Bnutlin,Inc. ' The Maintenance Log shall: 1. Document the completion of required maintenance tasks. ' 2. Identify the person responsible for the completion of tasks. 3. Idenrify any outstanding problems,malfunctlons or inconsistencies idenHfied during the course of routine maintenance. ' The Site Manager shall be responsible for ensuting that the scheduled tasks are appropriately completed as described in this Plan and recorded in the Maintenance I , Log. � ' 1 ' ' ' ' ' ' ' ' I ' ' �w�.a�aumoaoa+.owa,��wo�wo�- D-4 Attachtnent D—Operation and Maintenance Plan(Apri12006) rvaraoc ' , �� Vanasse Hangen Brustlin,Inc ' Site Maintenance Log � 1'MCA at Leggs Hill ' Leggs Hill Road Salem,Massachusetts ' Maintenance includes annual catchbasin,water quality unit,and isolator row inspection,annual(muumum) cleaning of catch basins,pavement sweeping twice a yeaz,and quarterly trash removal. ' Activiry Date Completed Completed Repair Needed Date of Repair Repaired by Supervisor BY Yes/No(describe) Veritication , ' ' ' ' ' , ' , ' � ' , ' , ��aumo�..a�o��>won�oi- D-5 Attachment D-Operation and Maintenance Plan(Apri12006) �.� ' ' , Stormwater Management Report - � - � , , 1 YMCA at Leg�s Hill , 1 1 . Salem/1Vlarblehead, . � Massachusetts � : � Prepared for NorEh Shore YIVICA . ' 245 Cabot Street Beverly,MA,01915 . ' Rrepared by '-VHB/Vanasse Hangen Brusflin,Inc. Transpor-tation,Land Development,Environmental Services , , lO1.Walnut Street � . . . P.O. Box 9151 . '. Watertown,Massachusetts 02471-9151" 617 9241770 � : � _ . � - , Apri12006 � . � � . ' . . ' �� Vanasse Hangen BmsHin,Inc. � � Table of Contents � � � Project Summary....................................................................................................................2 ExistingConditions...............................................................................................................5 � Proposed Conditions.............................................................................................................8 Hydrologic/Hydraulic Analyses....................................................:.................................13 � Stormwatec Management Regulations............................................................................15 ' Figure 1:Site Location Map.......................................................................................................4 Figure 2A: Existing Conditions Drainage Areas .......................................................................7 Figure 2B: Existing Conditions Drainage Areas ........................................................................8 Figure 3A: Proposed Drainage Areas .....................................................................................13 � Figure 3B: Proposed Drainage Areas......................................................................................14 � List of Tables Table i: Existing Conditions Hydrologic Data............................................................................6 Table 2: Proposed Conditions Hydrologic Data.......................................................................12 �I � Table 3: Peak Discharge Rates...............................................................................................16 Appendices ' Appendix A:Existing &Proposed Conditions Plans and Floodplain Infonnation Appendix B:NRCS Soils Information Appendix C:TSS Removal Worksheet ' Appendix D:Hydrologic/Hydraulic Analyses Appendix E:Long Term Stormwater Operation and Maintenance Measures • , � � . ' ' L:\09044.00\reports\Drainage Report\Apri12006\09044 Drainage Report-final.doc 1 Table of Contents � � Vanasse Hangen 6rustlin,[nc. � � Proj eet Summary � � The 19.55± acre Site is located at Legg Hill Road on the border of the City of Salem � and the Town of Marblehead-in the Commonwealth of Massachusetts(see Figure 1). The Site is bounded by Leggs Hill Road to the noi�th and east,residenflal homes to the south,and steep siopes to the west The Site is located within the surface , watershed of the Forest River,which discharges to the Atlantic Ocean. Wetland Resources on the Site include a portion of lOt acre pond located on the southem portion of the site. This pond outlets to a tributary of the Forest River which is , located approximately 300'west of the site. � The Site is not presently occupied however it has been used historically as a gravel pit and a construction material landfill. A paved loop road traverses the site and several large rock outcroppings are visible. Under existing conditions,stormwater � runoff from the southem portion of the site Elows overland to the pond and then on to the Forest River via the previously mentioned tributary. Stormwater runoff from the western porfion of the site flows overland directly to this tributary. Stormwater ' runoff from the eastern part of the site flows overland to the Town of Marblehead clo9ed drainage system in Leggs Hill Road. $tormwater fromthe northern portion of the site flows overland directly to the Forest River via a steep portion(9%grade)of � Leggs Hill Road. There is no closed drainage system in this stretch of Leggs Hill Road which starts just north of the Site frontage and extends north all the way to Loring Avenue(1,500±feet). � The proposed development of the site includes the construction of an 88,000±square- foot(SF)YMCA facility,246 associated parking spaces,a small athletic field,a 460± � foot long subdivision road and the creaHon of 10 single-family home lots. The individual houses will not be constructed as part of this project. Under proposed conditions,the majority of the stormwater mnoff from the YMCA site will be � wllected in a closed drainage system and mnveyed to a subsurface detention/infiltration area which will discharge controlled flows from the site. Runoff will be routed through an"isolator row"water quality device as � manufactured by StormTech,prior to discharging to the subsurface detention/infiltration area. The stormwater runoff from the westem portion of the subdivision road will be collected in a closed drainage system and routed through a � water quality device prior to being discharged in the vicinity of the existing pond. Runoff from the eastern portion of the subdivision road will be collected via a closed ' :j ' L:\09044.00\repoets\Drainagefteport\Apri12006\09044DraiwgeRepon-fiwl.da , � . 2 Project Summary � �B . Vanasse Hangen Brustlin,Inc. � , drainage system,routed through a water quality device and discharged to the existing closed drainage system located in Leggs Hill Road. � The rate of stormwater discharged from the site will be reduced below the existing ' rates for the proposed project. Wherever possible existing drainage and grading pattems were maintained in the proposed design. However,in order to improve an existing undesirable condition,the site has been designed to minimize the amount ' overland discharge to the northern portion of Leggs Hill Road that does not have a closed drainage system The proposed project provides the benefit of capturing, treating,and redirecting approxunately 2.80 oE acres of area that currently drains � onto this portion of Leggs Hill Road. This additional area is rerouted to the proposed infiltration/detention system the.maximum extent practicable. Additionally,water quality and quantity control measures such as street sweeping,deep sump cafih 1 basins,and subsurface detenfion/infiltration have been designed to protect the surrounding natural resources from potentiaP stormwater runoff impacts. The proposed drainage system has been designed in compliance with the Massachusetts ' Department of Environmental Protection 5tormwater Management Standards. A HydroCAD model,using TR-20 methodotogy,was developed to evaluate the � existing and proposed drainage conditions on the Site. The 2,10,25 and 7.00 year storm events have been analyzed for the pre- and post-development conditions and the results of this analyses are presented in Table 3 at the end of this report. � The Stormwater Management Plan(the Plan), including Best Management Practices (BMPs) for maintaining stormwater runoff quality both during and after ' construction,was piepared in accordance with the applicable local,state, and federal regulations. Details of the Plan are provided herein. � ' , � � � ' � L:\03044.00\reports\Drai�ugeRepo�t\Apci12006\09044Drai�ugeReport-final.da 3 Project Summary , y .�y� �.�g�` �\` >z��s4. 1 �r'7 /T r.axb�*'�'fi"�n`,,�/l . . 6 a.�' ..- mYT \l '��'11/ \ .'��A��i\ Itlh��'" •�'��i�'��• .. � � � } �� . e � ` : �.i � •�a � � /� �� l �`5w.� 'r�„ui .� '1� � • Ty�`��' . v , .��r�3� 9 u ar��. .��5,.G.°'� ;/�. � ��.�1F'��t�y�'��,�� .��.� � . �i �,�\.,�\��jy��) ��/^'�� 1 a ��, �j r��3�, � . /��„qF�t^^� � �f'� r li �i��a f +c�r¢- }i i.?q� s��z,/✓ ��i`y��;!�Ii� ,�/t �s�m� �Iy �L��'��s��2 ��3�'✓�d�. 'qv�,� �`� >� ��t�+ ��+�'�S.�{y��.�. ?rcZp'a`� ` � �� 'a q � :A � . n 4 •�� ♦ '��r�;��' �",�,`$31t�F��?,¢..4p�, �q��'�\ , 5/�(p��3.d'er r��i �� \` �� i�',t.��'+I�y`'g1y�'a11�11� � �,{�ffi'lK1��?��Sqy`4� �d��F . 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'� i � '��,3�?ti►� '' '� : ��:��' I ' ` �. —.. ,� � � �+ s��9,�.� � ��h'�'y�� , �`� {� '�<� i 1 �"'��,_:%�� e�5�.�� .�+ ' '� � �� ,�.;.. ,�r�,/�r� 'g� �'° .�J � ,� m � , � �� .c��s.��,��'�J.� , , �7 ��,s�t� ,. �,? w mz�- .��&' / z � r �� i��•,�,�� '�°r� ��`��,� '', �� " � � ��y". �+F y+<l�s � ' �' :' l � a. i,,�'�c '�a� y��,•c}i � ' fa � i �yY �/ � ��s% .P� -�� ° � � �• � ,��f��, �� ^�y'`�y /n-�,r s'..�°�y��AJ �c��i,�/`,3syi^�y��qr/}=" _ .�F�Y=i'J�r�v�,e�x��l' .Q�9�:Jde'.'..�..��Y�Y�YdYh."•`,•'��'��..��. : „ Vanasse Hangen Brus[lin,Inc. � • �. � �� - � � i � � • i __' i . � ' ,�1-� Vanasse Hangen Brustliry Inc . ' � Existing Conditions � � 1 � _ _ ... Summary The approxunately 19.55±acre Site is not presently occupied however it has been ' used historically as a gravel pit and a construction material landfill. A paved loop road traverses the site and several large rock outcroppings are visible. A pond is partially located on the southern portion of the sita The pond outlets to a tributary � of the Forest River. See Figure 2. � The project is not located within the 100-year flood plain,as shown on the FEMA Floodway Map,Panel number250102 0005B dated August 5, 1985 included in Appendix A. � Under existing conditions the site consists of moderate to steeply sloping terrain. Elevations on-site range from a low oF about 23±at the pond surface to a high oE 122 ' ±at the center of the interior. The ground cover is dominated by a mix of brush and small diameter trees. Piles of bouldeis and rubble are scatYered throughout The Natural Resource Conservation Service(NRCS)Soil Survey of Essex County, ' Southern Part,issued May 1984 indicates that there are four(4)soil types present on- site. The soils are: Pits,sand and gravel(Pg);Chatfield-Hollis-Rock outcrop complex, 3 to 15 percent slopes(CrC);Rock outcrop-Hollis complex(Rx);and Urban Land (Ur). For the purpose of the hydrologic calculations,all four(4)soil types have baen classified as h drolo ic rou C A fi re and additional d ' y g g p gu etailed soils information is included in A endix B. PP � _._._............._......_......................................_..........._....................._.........................._........._.........._...._....._..........._ Hydrologic information ,' For the existing conditions hydrologic analysis, the site was divided into four(4) drainage areas,that contribute to five(5)design points,where peak discharge rates � were evaluated(see Figure2). Each drainage are is described below: , � Drainage Area 1,approxunately 3.8 acres,flows overland in a southerly direction to the pond parHally located on the south end of the site. This pond outlets to a tributary of the Forest River. The ground cover is 1 ' L:\09044.00\repo�ts\DrainageRepor[\Apri12006\p9044DrainageReporbfinal.doc 5 Existing Conditions ' r�1-� Vanasse Hangen Brustlin,Inc. I ' predominantly brush and small diameter trees. A portion of the paved loop ' road is also located on this drainage area. • Drainage Area 2,approximately 3.6±acres,flows overland to a steep portion � (9%grade)of Leggs Hill Road and then on to the Forest River. There is no closed drainage system in this stretch of Leggs Hill Road which is approxunately 1,500 feet in length The ground cover is predominately brush ' and small diameter trees and large rock outcroppings. A portion of the paved loop road is also located in this drainage area. ' • Drainage Area 3 is approximately 2.7±acres of predominantly sloped land which flows overland in a westerly direction to a tributary of the Forest River. As this area was too steep to be disturbed by the previous site use,the � ground cover is primarily woods with smaller areas of brush mixed in on the flatter portions. , • Drainage Area 4,approximately 4.2±acres, tlows overland in an easterly direction towards the closed drainage system in Leggs Hill Road. The ground cover is predominately brush and small diameter trees with smaller ' areas of woods and large rock outcroppings mixed in. A portion of the paved loop road is also located in this drainage area. ' Ta61e 1 summarizes the key hydrologic parameters for each drainage area used in the existing conditions analysis. ' Tatile 1: Ezisting Conditions Hydrologic Data ' Description Discharge Design Area Curve Time of (Drainage Location Point (acres) Number Concenhation(min) ' Area#) 1 Pond 1 3.8 76 14.8 2* Leggs Hill Road to 2-5 3.6 77 9.1 ' Forest River 3* Forest River 3-5 2.7 74 7.6 . � Tributary to Forest ' River 4 Leggs Hill Closed 4 4.4 76 7.4 Drainage System , *Note—runoff from areas 2 and 3 eventually discharge to the Forest River designated as Design Point 5 in the hydrologic analysis , , ' ' ' L\09W4.00\repor�s\DrainagefteporAApri12006\09044DrainageRepo�bfiwldoc 6 Existing Conditions ' L•109044.OUcadVdlPlennasc�mmveEe�A8094-E7(dralnaerlal.dwp . . -, . .,, - � . y -.. " . ' � . . .,, .. - ' •k: ` ` _. , :: �: ,. ., (. 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"�` �, . � L, � y �.., ; .� �� 4 . i ,,« � YMCA at Leggs Hill � � ' Existing Conditions Drainage Areas � ,� with Aerial Orthophoto , 0 75 150 Feet ' .L'bA014. �e6tdwp . . - � . � � � � \ � \ 1 � � `� LEGEND � E 1 �.,� . 1 � DESIGN POINT � •� • j `�+, '-: i � ', _ _ -� - ��.. � " � � \ �..t i�� , � � a'`."x' s� � � � .�--k. � � � � �� y v � : � ' � � �'�' : � : --x`"� �� '^ �_ .. � - z '� � .� s � �� DRAINAGE AREA DESIGNATION ; a � � #� p' � � �. �:.�. �e�_m„��.� Jy� �S-er�s� r� �� A1 '�W�IqI�' . �� -ii�� 1 � : V± e� .. '.'.��,� K-F-r � �� .. � ��:r '=-._-a 3` "'g 's- ; . �a `�`" `� ^`'" 's'yiri��i` }`e� � r �.�-:-•� ^�#� '� . � -�' =,x, �.. � .�_�� x _ -,a, . -�` ,�,, - , '�`M1 � � � DRAINAGE AREA BOUNDAftY � z ' - �,___--... �� . "i /r 3 ��t�c �e:,.�''-'a f`. � x. �_ '`.- .>r � ��,a�-r�s; . i'=��.�;;��`�'-`'' � �� gg� ni� ( ' . f ._ xz.. . _ u�..z 3� � � ��.w �,�, i � --�-""✓� �� `` i .�'tt i � � ' ` .. ) 'y �""'�"t��i �. 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Summary , The proposed projeM includes the construction of an 88,000±square-foot(SF)YMCA facility,246 associated pazking spaces,a small athletic field,and 10 single-family homes. The YMCA fac$ity will include two(2)indoor pools,one (1)outdoor pool,a ' 66 seat cafe and an early leaming center with a 120 student capacity as well as approximately 11,600 SF of Boston Ballet dance studio space. The Boston Ballet will operate in collaboration with the YMCA and will share YMCA facilities such as ' locker rooms and cafe space. The single family homes will be constructed by others but far the purpose of this report we have assumed an unpervious area(house + driveway)footprint of 2,000 square feet per lot. , The site was designed to comply fully with the IVlassachusetts Stormwater Management Policy as well as the applicable Salem and Marblehead Subdivision � Regulations. Overall drainage and grading patterns to the three(3)final design points(1,4 and 5)were maintained to the maxunum extent possible. Within DP 2,it is proposed to improve an undesirable existing condition by capturing,treating and ' redirecting 2.8±acres of area that currently flows overland to the northem partion of Leggs Hill Road. The proposed design redirects the majority of this area to the ' subsurface infiltration/detention area which overtlows to Design Point 3. This will provide a benefit ko the community by reducing the runoff that currently flows uncontrolled towards this steep portion of Leggs Hill Road that does not have a i ' closed drainage system. This redirecHon of flow wffl slightly increase the peak rate of runoff(less than 1 cfs for 100-year design storm)to DP 3,however,as shown by DP 5,the discharge from the Site will be decreased significantly(10.2 cfs for the 100- ' year design storm). The proposed project includes the addiHon of approximately 4.7 acres of impervious 'I ' area,including pavement,rooftops and sidewalks,to the Site. The proposed development has been designed to capture stormwater runoff from the ptoposed unpervious areas in a closed drainage system by catch basins with 4-foot deep sumps , and hooded outlets. The majority of the stormwater is then routed to a subsurface detention/infiltration system located on the northem porHon of the site,as shown on Figure 3. Runoff from the remainder of the proposed impervious surface wil]be ' collected via a closed drainage system and routed through one of two proposed ' 4\09044.00\reports\DrainageReporc\Apri120�6\09044DrainageRepon-final.dx 9 PIO�JOSBdCOIl(IIf10T15 ' ,1/1► Vanasse Hangen Brustlin,Inc. ' water quality devices prior to discharge. Detai]s of the detention basin design and ' stormwater quality features are as follows: ' __..........._.........__..._................................................_.......__..__..........._......._........_._....._.............._._........_... Water Quantity and Quality Control ' Site Layout. The project site has been designed to maintain a 20'no disturb zone adjacent to the existing pond. In addition,the vast majority slope on the western portion of the site will not be disturbed. ' Source Control.A comprehensive source control program will be unplemented at the site,which includes regular pavement sweeping,catch basin cleaning,and , enclosure and maintenance of all dumpsters (if any). Further discussion of the site maintenance is included in the Starmwater Management Regulations Section 5. , Snow Management. The project will utilize the landscape islands and the perimeter of the parking lot for snow storage. In the event that additional area is needed the ' athletic field will be utilized. Deep Sump/Hooded CatchBasins.Catch basins at the site are to be constructed with ' deep sumps (minimum 4-feet)and hooded outlets to trap debris,sediments and floating contaminants.Catch basins will be cleaned on a regular basis and the accumulated material will be disposed of in accordance with applicable local,state ' and federal regulations. Detention/Infiltration Basin-A subsurface infiltration system is to be used for , stormwater runoff. It is located under the proposed athletic field. It is designed with open bottomed,arch-shaped chambers supported on stone bedding which provide the opportunity for infiltration. This system has been designed to minimize the loss ' of annual recharge by providing subsurface detention/infiltration which will have a total recharge volume of approxunately 15,250 cubic feet which is equivalent to roughly the first one(1)inch of runoff to fall on the proposed impervious area. This � volume is well in excess of the 1,700±cubic feet required by the state standards. ln addition, the system has been placed in an area of proposed fill,which will allow for the placement of additional well draining material below the system. The overflow ' is piped to the south and then discharged westerly where it flows overland to Design Point 3. , "Isolator Row"Water OualityTreatment-This is an integrated component of the infiltration system designed by StormTech Manufacturers as part of their infiltration system(details provided in Appendix D)that removes total suspended solids and tprovides easy access for inspection and maintenance. The"isolator row" is � comprised of infiltration chambers that are completely enclosed by geotextile fabrics. Sediment is captured in the iso]ator row as stormwater passes through the fabric to ' the stone and adjacent chambers. ' L:\09619.00\reports\RaiwgeReporl\Apri12006\0904/DrainageReporbfinaldoc 1� Proposed Conditions ' ,1�8 Vanasse Hangen Bmsflin,Inc. il � II ' Watet Ouality Device—Two(2)particle separators are to be used for stormwatei I runoff treatment. They are located on the east and west ends of the proposed subdivision road. � 1 _.._..._...____........_- _._..................._...._._.._...................__..._._._.......__.............._.._..... , Hydrologic Information For the proposed conditions hydrologic analysis,the site was divided into eight(8) drainage areas(see Figure 3). These areas discharge to five(5)design points where ' peak discharge rates were evaluated for both existing and proposed wndiHons. Each drainage are is described below: ' Draina,s,e Area 10—This 1.8±acre area includes the rear portions of the residential house lofs adjacent to the existing pond. This area drains overland to the existing ' ' pond (DP 1). ' Drainage Area 11—This 0.8±acie area includes the portion of the subdivision road ' and vegetated siope that drain to the two(2)proposed catch basins located in the cul- de-sac. This area is discharged from the proposed flared end section immediately upstream of the existing.pond (DP 1). ' Drainage Area 20—This 0.7±acre area includes vegetated slopes that drain overland to the east towards Leggs Hill Road (DP 2). ' Drainage Area 30—'I�his 1.8±acre area includes undistuibed vegetated slopes that drain overland to the west towards the tributary of the Forest River(DP 3). , Drainaae Area 31—This 5.3±acre area includes the YMCA roof,the majority of the proposed parking lots,the outdoor pool area,the majority of the atfiletic field and ' various small landscaped areas. Runoff is eolleeted via a closed drainage system and discharged to the Detention/Infiltration Basin which discharges overflow to DP 3, (the tributary to the Forest River). ' Dr.ainage Area 32—This 0.5±acre area includes the majority of the proposed fire department access road on the west side of the YMCA building. Runoff from this , area is collected via a closed drainage system,passes through a water quality device and discharges to DP 3. , Drainage Area 33—This 0.5±acre area includes vegetated slopesand the proposed rip-rap slope that drains overland to the west towards the tributary of the Forest River(DP 3). ' Drainage Area 40—This 3.3±acre area includes the proposed residential house lots ' on Leggs Hill Road, a porHon of the proposed subdivision road,and a portion of the YMCA site drive. The runoff from the impervious porHons the subdivision road and ' L:\09044.OD\reports\Drainage Repori\AprJ 2006\W044�rainage Reporo-final.doc 11 Proposed Conditions ' ,1■�� Vanasse Hangen Brustlin,Inc . ' the site drive are collected via a closed drainage system and piped fo the Marblehead ' closed drainage system in Leggs Hill Road. The remainder of the subcatchment f]ows overland in an easterly direction towards the closed drainage system in Leggs Hill Road(DP 4). ' Table 3 summarizes the key hydrologic parameters for each drainage area used in the proposed conditions analyses. t Table 2: , Proposed CondiCions Hydrologic Data ' Description Design Area Curve Time of (Drainage Area#) . Point (acres) Number Concentration(min) ]0 1 1.8 75 5.4 ' ]1 1 0.8 83 5.0 20 2-5 0.7 75 5.3 30 3-5 1.8 73 5.0 ' 31 3-5 5.3 91 S.S 32 3-5 0.5 89 7.3 , 33 3-5 0.5 77 5.0 40 4 3.3 SO 5.7 `Note—runoff from areas 20,30,31,32 and 33 eventually discharge to the Forest ' River designated as Design.Point 5 in the hydrologic analysis The site complies fully with the total suspended solids removal requirement of the ' Stormwater Management Policy.The calculated TSS removal rates for the site are shown on the Worksheets included in Appendix C. ' , ' I , ' ' ' L:\09094.00\reportt\DrainageReport\Apri12006\09044DraioageReporbfinal.doc 12 ProposedConditions ' L109044.001cad11d1Planmisc\SMrmwaleA09044PRdrain.dwg � � . . �� ' , _ r i ' `•' I .� LEGEND j . } 1 �,. 0 � s 1 POND � `\ s , - � a � � � . , oEs��NPa�NT ; _�___ __�� '- �, ......._ ..--"'"��-.-�'��•--.•�-...,� � ,� '^,,...-� _V._,.�.._ ��'^ �� • ' ` '- —.....1"`�` `� �—"�-~ —,_. 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' '. ; ' � �� ` .� �t,. «-..�' , �` , ` t � . �� - � � � � �.4 .� +� "s , , - ».-_ , ` , .,� t „ , , , , . � s. ,y`� -.. � , �� , , ' y , " '. ✓� .a q � .� M n� �� _ '� f� � _. � � .Y �� -�. �" �!, �t.'� � � � i I < �� ; y s..,w ..� � r�. 14��y ,�r.� �t �i . ,� ��.��. `'�".�' , 1 :x r 4 ' � � *o`.�' � Figure 3b Apri12006 . �. � � p � , ; ",� � is J �..':ai�� '�' `' `� ,; " � � �V.'�� , 1'MCA at Le s Hill , ... � � � . , � � ,,:. �n� ., _� � �'.-s! � �� .� ' � t � � � "} � ' ` Proposed Conditions Drainage Areas I' � � � with Aerial Orthophoto ' ' 0 75 150 Feet � i JI , � , ' ; � Vanasse Hangen BrusHin,Inc. � � � � i ! �� Hydrologic/ Hydraulic Analysis ( f ! . 1 . f � ! ` Hydrologic Analysis i ; ,, The rainfall-runoff response of the Site under existing and proposed conditions was � evaluated for storm events with recurrence intervals of 2, 10,25,and 100-yeazs. � ' Rainfall volumes used for this analysis were based on the Natural Resouices Conservation Service(NRCS)Type III,24-hour storm event for Essex County;they ` ' were 32,4.6,5.4,and 6.6 inehes,respectively. Runoff coefficients for the pre-and � post-development conditions,as previously shown in Tables 1 and 2 respectively, ', were determined using NRCS Technical Release 55(TR-55)methodology as provided 4 in HydroCAD. 4 , ' Drainage areas used in the analyses were described in previous sections and shown on Figures 2 and 3.The HydroCAD model is based on the NRCS Technical Release �� 20(TR-20)Model for Project Formulation Hydrology. Detailed printouts of the HydroCAD analyses are included ii�Appendix D. Table 3 presents a summary of the ( existing and.proposed conditions peak discharge rates. ( : ', � i ; '' I 1 � ( 1! � ii '? I ` t 1r if 1' L1 Il\036f4.00\reports\DrainageReporHApri120p6\09094 Drainage Repor4finaldoc 15 Hydrolopic/Hydraulic Analysis 1 ; ' � 1 � v� Vanasse Hangen Brustlin,Inc. '' t � i �' Table 3: � ; ' � Peak Discharge Rates(cfs`) ' � � Design Point Discharge 2-year 10-year 25-year 100-year ' i Location �r Design Point 1: Pond �; Existing 3.8 7.5 9.7 13.3 Proposed 3:8 72 9.3 12.5 Design Point 2: 2-5 �, Existing 4.4 8.6 11.2 15.1 , Proposed 0.9 1.8 2.3 32 1. Design Point 3: 3-5 � Existing 3.0 62 8.1 112 Proposed 3.6 7.0 9.0 12.3 �, i � Design Point 4: LHR Existing 5.5 10:8 14.1 1g.1 �� Proposed 5.4 9.9 12.5 16.6 Design Point 5: Forest River �' Existing 7.4 14.7 192 2b.2 ' Proposed 4.6 8:9 11.6 16.0 '' � � *expressed i�cubic fee[per serond 'i ' The results of che analysis indicate that the peak discharge rate from the site is not i < increased betwe.en the pre-and post-development conditions far the 2,10,25 and � 100-year storm events(see DP's 1,4 and 5). Design Point 5 represents the Forest , �� River where DP's 2 and 3 are combined. As previously described in this report,this � i ; redirection of flow has been proposed to improve an existing undesirable condition at Leggs Hffl Road band does not impact the overall hydrology of the region. �' i � , Hydraulic Analysis � � The closed drainage system was designed for the 25-year storm event. Drainage ' pipes were sized using Manning's Equation for full-flow capacity and the Rationa] Method. Addirionally,the performance of the system was analyzed using � ` StormCAD,a HEG22 based program. Pipe sizing calculations are included in ', Appendix D of this report. t . � L:\49044.�0\reports\DreinageAeport\Apri120�6\090.19DrainageRepotl-finaldoc 16 Hydrologic/Hydraulic Analysis i � , r � ,I�- Vanasse Hangen Brustlin,Inc � 'f � i ,, � I''� � Stormwater Management �� Regulations , , � < < '� The purpose of the Stormwater Management Plan(the Plan)is to provide]ong-term protecrion of natural resources in and around the Site.This is achieved by unplementing water quality and quantity contro]measures designed to decrease the , amount of pollutants dischazged from the Site,increase the quality of stormwater '� � recharged on the Site, and control discharge rates. The following sections describe the regulations pertinent to stormwater management � and the specific wmponents of the Plan to be unplemented. � � Stormwater Regulations and Permitting �- The following stormwater re]ated regulations and guidelines apply to the proposed �. site development: ' > Massachusetts State Stormwater Management Performance Standards and �. Guidelines,Department of Environmental Protection and Office of Coastal�Zone ; _ Management(DEP/CZM,March 1997). i �, > Environmental Protection Agency(EPA)National Pollutant Discharge y � EliminaHon System(NPDES)Stormwater Permit for Construction Activities � ' disturbing greater than one acre(EPA,Federal Register,December 8, 1999 and �' amendments) � �' Compliance with these regulations is described in the following sections. s ■ It Stormwater Management Standards and Guidelines '' � . The methods for compliance with the nine-stormwater performance standards developed by the MA DEP are summarized below. �': j j 1. No new stormwater conveyances rnay discharge untreated stormwater directly to or cause erosion in wetlands or waters of the Commonwealth. �� L:\09099.00\reports\Drainage Report\Apri120p6\09DW Drainage Repor4final.doc 17 Stormwater Management Regulations i. i ' � �B Vanasse Hangen BxusNin,Inc. �� l �� No new stormwater conveyances will discharge unfreated stormwater direcfly to � , wetlands or waterways. �� 2. Stormwater management systems must be designed so that post-developmrnt peak discharge rates do not exceed pre-development peak discharge rates. fF '' The proposed stormwater management system has been designed so that post- � t . development peak discharge rates do not exceed pre-development peak discharge rates for the Site. �, 3. Loss of annual recharge to groundwater should be rninimized through the use of �' infilfration measures to the maximum extent practicable. The annual recharge from the post-development site should approximate the.annual recharge from the pre-develoqmenf � = site eonditians based an sail types. �� The site has been designed to maximize annual recharge by providing subsurface � � detenfion/infiltration�vhich will have a total recharge volume of 15,250 cubic _feet. This volume is ok�in excess of the 1,700±cubic feet required by these , standards. r � i 4. For new development,stormwater management systems must be designed to remave ` 80-percent of the average am�ual Ioad(post development eonditions)of Total Suspended � ' Solids(T53).It is presumed that this standard is met when: ➢ Suitable non-structural practices for source control and pollution prevention are �. implemented; I ' ➢ Stormwater managernent 6est mariagement practires BMPs)are sized to capture the �� preseribed runoff�olume;and ➢ Starmwater managemeiit BMPs are maintained as designed. j . The project has been designed to provide 60%removal of the average annual TSS t load. �� ' . 5. Storntwater discharges from areas with higher potential polluEant loads require the use af , specific stormwateT managemrnt BMPs(listed in guidelines). The use of infiltration ipractices without pretreatment is prohibited. r The project does not have the potenHal for higher pollutant loading. � ` '� � 6. Stormwater discharges to critical areas must utildze certain stormwater management. ,, BMP's approved for critical areas Qisted in guidelines). Critical areas are Outsfanding ` ' Resource Waters(ORWs),shellfish beds,swimming beaches,cald-water fisheries and � recharge areas far public drinking water supplies. �� i ; The project does not discharge to a critical area. �; � . ik �, L:\09014.00\reporis\DrainageRepor[\ApriI2006\09W4DrainageRepotl�final.doc 18 Stormwater Management Regulations i ; , , V� '4 Vanasse Hangen Brustlin,Inc � ( I �� 7. Redeaeloqment of previously developed sites must meet the Stormwater Managemenf Standards to the maximum extent practicabie.However,if it is not practicable to meet all ' } the Standards,new(retrofitted ar expanded)stormwater management systems must be � designed to improae existing conditions. ' � i The project is not a redevelopment. � 8. Erosionand sediment controls must 6e implemented to prevent impacts during , • construction and land disturbance activities. �, Recommended erosion and sedimentation confrol practices are included in Appendix F—A maintenance checklist recommended for evaluating erosion ' .control BMPs is also included. f ' '' 9. All stormwater management systems must hnve an operation and maintenance plan to 1 ensure that systems functian as designed. 1� Recommended practiees for operating and maintaining long term stormwater BMPs is included in Appendix E.A recommended checklisE for maintenance � ' inspections and follow up is also included. The Stormvyater Management Policy issued by the DEP/CZM states that the"use of �� the standards should prevent or minimize adverse environmental impacts due to unman9ged stormwater while limiting undue costs and recogruzmg site constrauits." '` � , ! � Federal NPDES.Construction-Related General ; Stormwater Permits ', The proposed project will result in the disturbance of more than one acre of land and � thus requires the preparation and implementation of a Stormwater Pollution �` Prevention Plan(SWPPP)by the site contractor and owner in accordance with the , Environmental Protection Agency's(EPA's)National Pollutant Discharge � Elimination System(NPDES)General Permit Program for Stormwater Discharges I ' from Construction Sites. The SWPPP is not included in this report. �I ` ik '. � � � ( ;. 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'��,* ��t�'�'; s�EY',¢��^�a'1��I��'w'l�+\ ��^�.t��kt`��`?, � �� F"°.UO?'e-��s'v t�'%3"> *'�v' g�`3y�� +�yvy,;. oi`,�^k��r � �'�., �"�.'�' x'.,w��'� '�i4Y`y i��7�j°�i�� y�.,�\ 1�.��'��. �T� '„S�r _S<;sa`- .9^ci „> -s+-.. �m }��i... 3,'h`Z2�._,.�dl}.�a.sro.�2 _ „ Vanassc Hangen Brustlin,Inc. � • .� . � � i�i� � �� i i � � � i � i � ' � . i -- i ' f ( � � � Vanasse Hangen BrusHin,Inc. '� i ( '` rt 'I Appendix B: � � �� NRCS Soil Survey Information � � � � , . �� C � , �� E �. ; �. , ; �� . �� i . �F � , � : �t ii i� � � 1� , � . IF � � � : '� L:\090i4.00\reporis\DrainageReporc\AprJ20�6\09044IhainageRepoh-finaldoc �S 1 � , ' Essex Counry, Massachusetts, Southern Part �� 37 ' buildings, and other structures. Slo es ran e from 3 to P 9 are a few small areas of gently sloping Pipestone soils. � t 15 percent. They are gently sloping or moderately Included areas make up about 15 percent of this unit. 1 sloping; smooth, undulating, or rolling; and 100 to 1,600 feet long. The areas of this unit are irre ular in sha The permeability of this Pipestone soil is rapid in the 9 Pe subsoil and very rapid in the subsVatum. Available water ; and range from 10 to 500 acres. They are about 45 capacity is low. Reaction ranges from very strongly acid '� percent Paxton soils, 35 percent urbanized areas, and 20 to neutral. A seasonal high water tabie is at or near the percent included soils. The Paxton soils and urbanized surface in late fall, in winter, and in spring. The soil is areas are so mixed that it was not practical to map them droughty when the water table recedes during summer � , separately. and early fall. ' Typically, the Paxton soils have a surface layer of very Most areas ot this soil are in woodland. A few areas dark brown fine sandy loam about 8 inches thick.The are used for pasture. subsoil is fine sandy loam about 14 inches thick. The ! ' upper 7 inches is dark yellowish brown;and the lower 7 The water table makes this soil poorly suited to ' inches is olive brown. The substratum is ve firm and cultivated crops, but the soil is suited to moisture-tolerant ry hay and pasture plants. The erosion hazard is slight. The brittle,olive brown fine sandy loam to a depth of 60 main management needs include installing drainage � , inches or more. where suitable outlets can be located, increasing organic '� Included in this unit in mapping are small areas of matter content, and improving tilth. The use of proper Hollis, Ridgebury, Swansea, Whitman,,and Woodbridge ' stocking rates, deferred grazing, and rotational grazing soils. help maintain desirable pasture plant species. '�' The permeability of these Paxton soils is moderate in �� The soil is well suited to trees but is poorty suited to the subsoil and slow or very slow in the substratum. most types of wildlife habitat. The wetness caused by Available water capacity is moderate. Reaction ranges the water table limits use of the soil for recreational � �. from very strongly acid to slightly acid. A seasonal high deyelopment. � water table is perched on the substratum for brief Wetness limits the soil as a site for dwellings, periods during winter and early spring. 4 commercial buildings, septic tank absorption fields, or The Paxton soils, or open part of this unit, are used for shallow excavations. The rapidly permeable substratum �, r; lawns,gardens, and parks and are suited to such uses. p{ovides a poor filter for septic tank absorption fields; �� ' A moderate susceptibility to frost action and wetness effluent flowing through the substratum causes a hazard r, , caused by the seasonal high water table limit the Pauton of ground-water contamination. The sidewalls of fs soils as a sRe for dwellings or small commerciai excavations in this soil are unstable, and the steeper �1 , ; buildings. Slope is an added limitation for small sides commonly collapse. ' , E commeFcial buildings in areas where it is more than 8 This unit is in capability subclass IVw. percent. The slow or very slow permeabiliry of the � substratum limits the use of the Paxton soils for septic �pg—p�ts,sand and gravel.This unit consists of pits ' �Y tank absorption fields or for most types of recreationai from which sand and gravel have been removed for �'�`.development. The firmness of the substratum and construction purposes. The pits are 9 to 50 feet deep .; ::wetness limit shallow excavations. Slope and small and ran e irom about 2 to 100 acres. The sides icall , �� stones on the surtace limit playground development. are steep, and the floor is level to rolling, depend ng 1y �� .: this unit is not assigned to a capability subclass. upon the nature of the undedying material and the ` presence of bedrock. Piles of stones andboulders �; pe—Pipestone loamy fine sand.This soil is deep, commonly are on the pit floor. The excavations are � I f Enearly level, and somewhat poorly drained. It isin broad, commonly irregular in shape, depending on the nature of �inegularry shaped areas near streams. The areas range the deposits and ownership boundaries. Included in : Trom 5 to 25 acres. Slopes are smooth or gently mapping in some pits are small pools of water or areas : Gundulating and are 100 to 600 feet long. or rock outcrop. � ! �" Typically, the surtace layer is black loamy fine sand These pits are generally devoid of vegetation, aithough :' 1 �about 9 inches thick. The subsurtace layer is gray loamy some older ones have scattered bushes, grasses, and`_-- �sand about 5 inches thick. The subsoil is mottled loamy annuals. Most pits are droughty because of very low � ;'s,�and about 14 inches thick. It is firm and dark reddish available water capacity. Some pits have been ' ' tirown in the upper 2 inches and very friable and dark excavated to a depth beiow the seasonal high water `ellowish brown in the lower 12 inches. The substratum table. is,mottled, strong brown sand to a depth of 43 inches This unit is poa�ly suited to farming and woodland ' � •antl loose, mottled, yellowish brown fine sand from 43 inches to a depth of 60 inches or more. because of very low available water for plant use The " unit is also poorly suited W wildlife habitat, although �" Induded with this soil in mapping are small areas of some birds inhabit these areas. Pollution of ground water � 4eertield, Wareham, and Scarboro soils. Aiso included is a hazard in areas of this unit used for waste disposai.' � ' :,' �:?_'i: `�;.: �: „�;> c�,; ' , � ' 38 ,ti }, . soi� S�Ney ,.'. , � � ' Onsite investigation is necessary to determine the feet lon Stones and boulders 1 to 3 feet in diameter . . � suitability of the unit for any use. 9• This unit is not assigned to a capability subclass. are on the surtace 30 to 100 feet apart. � ,� ' Typically, the surtace layer is dark yellowish brown � PIB—Pollux fine sandy loam, 0 to 8 percent slopes. fi e sand bout 17�nches th clkkThe upper��0 nch syis �; 7his soil is deep, neazly level and gentiy sloping, and dark yellowish brown, and the lower 7 inches is yellowish , , well drained. It is on the sides and tops of low knoBs. � T he areas are irregular in shape and range from 4 to 15 brown. The substratum is very firm and brittle, light olive '� acres. Slopes are smooth or undulating and are 100 to brown gravelly fine sandy loam to a depth of 60 inches '� 600 feet long. or more. ;;� ; � ! Typically, the surface layer is dark brown fine sand Included with this soil in mapping are small areas of � ! ' loam about 10 inches thick. The subsoil is fine sand y Hollis and Woodbridge soils, rock outcrop, and ° ! Y Poquonock soils with no stones on the surtace: Included the upperul0 n hes and�yellowish brown'�n the oWe� 15 areas make up about 15 percent of this unit. ' ` inches. The substratum is firm and mottled. It is olive silt The permeabiliry of this Poquonock soil is rapid or very > f ' loam in the upper 11 inches and light olive brown ve rapid in the subsoil and slow or very slow in the fine sandy loam to a depth of 60 inches or more. ry substratum. Available water capacity is low. Reaction in � , Included with this soil in ma this soil ranges from very strongly acid to medium acid. areas with slopes of more than 8� peace tfAlso ncluded A seasonal high water table is perched above the � are areas where the subsoil extends below a depth of 40 substratum for brief periods in winter and early spring. inches. Included areas make up about 15 percent of this Most areas of this soil are in woodland. A few areas i unit. are used for homesites. ' The permeability of this Pollux soil is moderately rapid The stones and boulders on the surtace make this soil in the surtace layer and subsoil and moderatel slow or Poorly suited to cultivated crops. The use of proper y stocking rates, defened grazing, and rotational grazing slow in the substratum. Available water capacity is high. help to main4ain desirable pasture plant species. ` ' Reaction ranges from very strongly acid to medium acid � above a depth of 30 inches and from very strongly acid. This soil is suited to trees and to woodland wildlife to neutral below 30 inclies. habitat. The stones and boulders on the surtace limit the Most areas of this soil are used for homesites or are soil for most types of recreational development. � farmed. Some areas are in woodland. Wetness caused by the seasonal high water table This soil is well suited to farming. Good tilth is easii ��mits the soil as a site for dwellings and small maintained in cuitivated areas. The erosion hazard is y commercial buildings. Slope is also a limitation for small � moderate. Where the soil is farmed, conservation tilla e, commercial buildings. The slow or very slow permeability use of cover crops, and incorporating grasses and 9 in tfie substratum hmits the soil for septic tank absorption legumes into the cro fields: The firmness of the substratum and wetness limit pping system are management shallow excavations. ,, practices that help to reduce runoff and control erosion. Mixing crop residue and manure into the surtace layer This unit is in capability subclass Vls. '! ' improves tilth and increases organic matter content. The PoC—Poquonock very sfony loamy sand, 8 to Y5 otaGonal graz ntg help ma ntanedeseableazasuaedlant percent slopes. This soil is deep, moderately sloping, ' P P and well drained. It is on the sides of hills and ridges. I i species. � , The soil is suitable for trees and for openland and The areas are irregular in shape and range from 5 to 40 woodland wildlife habitat. The slow permeability of the ongSS olnes and b u de s 1�0 3 feet n diamete�a e on ,substratum limits development of playgrounds, camp � ;areas, and picnic areas. the surtace 30 to 100 feet apart. � The soil has few limitations as a site for shallow TYP�cally, the surtace layer is dark yellowish brown excavations and dwellings, but slope is a limitation for f nem and bout 176nches th c�kkThe u per 10 inch s�s ', '�small commercial buildings. The slow permeabiliry of the dark yellowish brown, and the lower 7 inches is ellowish � ;substratum limits use of the soil for septic tank brown. The substratum is very firm and brittle, light olive ` �absorption fields. This unit is in capability subclass Ile, brown gravelly fine sandy loam to a depth of 60 inches ' or more. t � POB—Poquonock very stony loamy sand, 3 to 8 �ncluded with this soil in mapping are small areas of percent slopes. This soil is dee , entl slo in , and Woodbridge and Hollis soiis, rock outcrop, and well drained. It is on the u pp 9 y p 9 9 Poquonock soils with no stones on the surtace. Included pper arts of hills and rid es. areas make up about 15 percent of this unit. ifhe areas are irregular in shape and range from 5 to 50 ; acres. Stopes are smooth, slightly convex, and 50 to 300 rap den the subso and si w�or very slow�n the�d or very '; ti 1' F� j F�.�,h`��«° 1 f...,-�i. �.. .. . ' � �. 130 Soif sdrvey � ; TABLE�10�--BUILDIN6 SITE DEVELOPMBNT--Continued � � N- Soil name and I�^ -Shallox. I Dwe111ngs I Dwellings � I Stiall I Local roada I Lawns and map symbol I�'�ezcavatlona 1 without � I wlth � commercial I- and etreets � landscapin '^ II ; -_.; ` I ,. .� I Dasementa I baeements I Dulldin e I � � � , --'--I I I I I I "`'� ' MsD -- ��$evere: , I3evere: ISevere: ISevere: ISevere: ISevere: 35 i.r� �i Montauk i� I slope: � I slope. .I slope. � elope. ��-slope. 1 slope. ,� � � I ' �,. . : I 1 I � � � , MxC ---- ---�Moderate: IModerate: IModerate: �Severe: �Moderate: iModerate: ��j� Montauk (�- dense layer� � wetness, � wetness, I slope. � wetnesa� I small stones� �'� � �� I' wetness, I slope. 1 slope. I I slope, -�� large stones�-�,�'� , i � � i slope. � I I 1 I Prost actlon. I slope. �e � � I I I I 1. � I 4 ' �NxD-=------ ------��Severe: ISevere: �Severe: �Severe: �Severe: ISevere: `�� - MontBuk I slope. I slope. I slope. I elope. - � slope. I slope. � ,�'.� . . � � � � � � � x ' ,. NnA---------------�Severe: IModerate: ISevere: IModerate: IModerate: IModerate: j ` Ninlgret � � - I wetnesa, I xetneas. I retneas. I wetneas. I frost actlon, ( wetnese. , - � � -�� I� cutnanks cave.l I I � I wetness. I � �� ' ----------- I I I I 1 1 NnB - --�Severe: IModerate: �Severe: �Moderate: IModerate: IModerate: � Nlnlgret�_ - ' I wetness, I wetnesa. I wetnesa. I alope, . � frost action, I xetness. Z ' -� - I cutbanks cave.l I I wetness. � 1 wetnesa. - I � ' I I � I I I PaH---------------IModerate: IModerate: IModerate: IModeeate: IModerate: �Slight. '- Paxton � dense layer, � wetness. � wetnees. � slope,. � � frost action, 1 _ � ,� , I wetnesa. � � I I aetnesa. I wetneas. 1 � � I I I I I I . PaC--------_____�Moderate: �Moderate: IModerate: (Severe: IModerate: IModerate: � '�� Paxton � I slope, 1 slope, � � slope, I slope. I slope, I slope. '� � I dense layer, � wetnesa. � I Ketness. 1 � I frost actlon, � . . , � I retnesa. I � I P � I wetneas. I � . I I I I I I � ?aD---------------�Severe: Isevere: Isevere: Isevere: �ISevere:. Isevepe: . . - ,, Pazton � i slope. i slope. i slope. i slope. i slope. i slope. � � PbB---------------IModerate: �Moderate: IModerate: �Moderate: IModerate: IModerate: . � Paxton � dense layer, I wetnesa. I wetness. � slope, � frost action, I large�stonea..' � �� I wetness. I I � I wetness. I wetnesa. I - - � I � I I I 1 PbC---------------IModerate: �Moderate: �Moderate: ISevere: 1Moderate: �Moderate: � Pazton ' � slope, I slope, I slope, � alope. 1 slope, � slope, � I dense layer, I wetnese. I wetneas. I I fcoat action, I large stones. . I wetness. � I I I wetness. I I I I f i I POD--------------Isevere: Isevere: Isevere: Isevere: ISevere: � ISevere: Paxton � slope. I slope. I slope. I alope. I slope. I slope. ' 1 I 1 I I I j PCE*: I I I I I I Paxtoa-----------�Severe: �Severe: �Severe: �Severe: � ISevere: � ISevere: ' 1 slope. I slope. � I slope�. I slope. � i slope. I slope. I 1 I I I I � � Montauk----------ISevere: ISevere: ISevere: ISevere: ISevere5 1Severe: PdC i slope. i slope. i slope. i slope. i slope. i slope. t '� I I I I I . Paxton-----------I^foderate: IModerate: IModerate: ISevere: IModerate: IModerate: ! � I slope-, 1 slope, I slope, I slope. I slope, � slope. . - ( ,. 1 dense layer, I wetness. I wetnese. 1 I frost action, I I wetnesa. � I I I I wetness. � I I I I I I Urban land. � I I I I I ` -----� I I I I I � �: ?e----------- Isevere: �Severe: ISevere: Isevere: Isevere: Isevere: Pipestone I wetness, � wetness. I wetness. I wetness. I wetness. I wetness. I cutDanks cave.l I- I 1 1 � F I I I I I f � ��r�ts 1 1 I 1 I 1 ______1 1 I I I I P1B--------- ISlight---------ISlight---------ISlight---------IModerate: - IModerate: ISllght. s Pollux I . � I � slope. � low atrength� � i , I I I ( � froat action. I . . I I 1 I I I See faotnote at end of table. 1`' ! I ' < < �ssex County, Massachusetts, Southem Part 143 ; � � TABLF. 12.--CONSTROCTION MATERIALS--Continued �� ' I Soil name and I Roadfill � Sand I Gravel I Topsoil map symbol � � ' I � � � � �°E'0 1 I I j ' , ' Paxton---------------�Poor: IIm robable- Iim robable: Ipoorp � P P ; I slope. � excess £ines. I excess fines. � 1 slo e, �'i ' I i I large stones. '�Montauk--------------�Poor: Ilmprobable: IImprobable: IPoor: � ; . P slope. I excess fines. I excess flnes. I slope, ' � I I I small stones. �dC': I I I , I Paxton---------------IGood----------------�ImproDaDle: �Improbable: �Fair: � I � excess Pines. I excess fines. � slope, j I � I I I small stones, I I I I I area reclaim. '�Urban land. I I � I I I I I I � �'e_'_"_"'______'____IPoor: � . IProbable------------Ilmprobable: �Poor: � Pipestone � i wetnesa. i � i too sandy. I wetness. � ■, I , �iits I � t I I ' I I I I � '1B-------------------Ipair-: Ilmprobable: � - Ilmprobable: � IFair: �Pollux I low strength. � excesa £ines. I excess Pinea. I small stones. � I I I � ;oB, PoC-------------IGood-----------------Ilmprobable: Ilmprobable: �Falr: � Poquonoek I � I excess fines. � excess fines. I area reclalm� � . � � � I too sandy, - I j i I large- stones. �oD------------------�pair: �ImprobaDle: Ilmprobable: �Poor: ; ,Poquonock � � slo e. .. ` , ' p i excess Plnes. i excess Pines. � i slope. �"• I I I I uarries � i i i � � j ;dA, R1A, R1B---------IPoor: �Improbable: Ilmprobable: Ipoor: .Ridgetiury � I wetness. . I excess fines. I excess fines. � wetness, � I I I �I small stones, I � I I I area reclaim. � I I I I ;x*: I I 1 I ,Rock outcrop. I I . I I 1 1 I I Hollis---------------�Poor: �Improbable: �Improbable: �Poor: � ' � I area reclaim, �I excess fines, I ezeess fines, I area reclaim, � 1 thln layer, I thln layer. I thin layer. I slope. . � : I slope. � � � � , 1 I I I 55------------------=—�Poor: IProbable-------------�1mprobable: IPoor: 'Scarboro I uetness. � � I too sandy. I too sandy, ki I I � � � pondin�. I I I I ScA-------------------�Poor: IlmproDaDle: �Improbable: IPoor: Scltico � I low strength, I excess fines. �I excess fines. I wetness, I wetness.. � � .I too clayey. ' I I I I � 3g9-------------------�Pqir: �Improbable: IZmprobable: IFair: Scituate ` I wetness. � � excess fines. I excess fines. I small stones, � � I � � I I I area reclaim. _ I I I , I f 'i�hB, ShC, Sm9--------�Fair: . Il�probable: �Improbable: � IPoor: tiScltuate I wetness. � excess fines. I excess flnes. I small �stones. I I I I oB, SoC--------------I'air: IImprobable: . Ilmprobable: IPoor: �Scituate I large stones, I excess fines. I excess fines. I large stones, � � I wetness. I I I area reclaim. I I I I See footnote at end of table. � [ : 'F ' nq i � � L� � 3 148 ` Soil surveY� r � TABLH 13�•--WATER MANAGEMENT--Contirmed � ,- Limitations for-- � . . . . . Features affectin -- �� Soll name and � I FSnDanlwents, - - - � � . :� r � map symbol I Pond reservoir l dlkes, and I Aquifer-fed � Drainage I drassed �^� i I areas I� levees - I excavated onds I � - I waterwa s •. '' I I � � �. PbC, PbD----------�Severe• �Severe: � �`�. Paxton ISevere: �Deep to water----ISlope, y [-i � i s1oPe•. i plping. � no water. �I : � rooting �depth, $'' . I � � I 1 � . I peres slowly ��? '' PCE+: I I I j j �: Paxton-----------ISevere: � � �.Y �Severe: �Severe: I�eep to water---I�Slope, M1,. C � -� i slope. . i piping. i no waten i � I rooting depth, . �t; ', . � � I . - I I � i perca slorly ' Montauk------____�Severe: �9evere: � ' ISevere: �Deep to water----ISlope, I seepage, I aeepage, � no xater. � � I rooting depth ' � i slope. � � . i piPing. i I i Perca� slowly , PdCt: I I I 1 I � Paxtoa----------_�Severe: ISevere: Isevere: IDeep to water----Islope, ' f i sl°pe. � i piping. � no water. � I peres slowly � �I i rooting depth.% `� �' { I I . UrDan land. - i i - i � � ' '� Pe----------------�Severe: ISevere: �Severe: �Cutbanks cave----IDroughty, � . � PSpestone I�seepage. � seepage, I eutbanka eave. I I wetnesa. � � i ' I i wetness. I 1 � I I j �` � P�*� 1 1 I I I I�� .Pits , . � 1 I I 1 I �, ' P1B---------------�Moderate: . ISevere: �Severe: . IDeep to Hater----lErodes easily, . � Pollux ; slope. i plping. . i no water. I 1 I ( peres alowly. t ' PoB---------------�Moderate: �Moderate: . - Severe: -�� IDeep to xater----IRooting depth, EPoquonock i elope. i plping. I no water. � � peres slowly. PoC, POD----------�Severe: IModerate: Severe: � I 1 ' Poquonock I slo e. I 1 in -. � IDeep to water----�Slope� I P ' p p g. i no water. � I � rooting depth, � I I peres alowly. � @u+. 1 j � i I � . guarries� f i i . i � I . . RdA---------------�Sllght-----------�Severe: Isevere• y, IWetness, i � • IPerca elowl � - Ridgebury - I - � wetness, I no Hater. I frost actlon. � peres elowly, '� ` � i i piping. i i I rooting aepth. < R1A---------------�Slight------------�Severe: � ISevere: IPerca alowly, IWetnesa, Ridgebur9, I I plping, � no water. I.frost action. I peres slowly, � : i i wetness. i i I raoting depth. Rle---------------Iploaerate: Isevere: " �Severe: �Slope, � IWetness, � Ridgebury � slope. � plpin i no watec. , B, � peres sloWly, I peres slowly, ' � � i I wetneas. � I frost action. I rooting depth. t : Rzf: I I I � � Rock outcrop. � � �. ' I I . I I I I I i iHo111s-----------ISevere: ISevere: ISevere: �Deep to water---ISlope, � � � I depth to rock, I thin layer, I no water. � I 1 depth to rock. ' I slope. � piping. � � � 1 I I I I ', Sb---------------ISevere: �Severe: ISevere: �Cutbanks cave, IWetnesa, Scacboro I seepage. I eeepage, I cutbanks cave. � frost actlon. I droughty. � i I I Ponding. I I I I I I I I ScA---------------�Sllg}it------------�Severe: ISevere: � IPeres slowly, IWetneas, � Scitico I . 1 piping, I slow ref111. � frost actlon. I perca slowly, � I I wetness. � � 1 erodes easily. � E � I I I I ' See footnote at end of table.� � ti 'j . II ' r , , �ssex Counfy, Massachuseris,Southern Part 155 ' f TABLE 14.--ENGINEERING INDEX PROPERTIES--Continued � � ClassiPieation Frag- Percentage passln oil name and �Depthl USDA texture � �ments I sieve num�er-- g �Liquid I plas- r imap symbol I I I Unified � AASHTO I > 3 I I limit I ticity I I I I Iinchesl 4 I 10 I 40 � 200 � I indez Pct I I� I I � I Pct I I I 1 1 �, PbC, PbD----I 0-4 IVery atony fine ISM, M[,, IA-2, A-4 I 5-ZO I80-95 175-90 I60-85 130-65 I <30 I NP-18 �pxton I I sandy loam. I SM-SC 1 I I I I 1 I 1 'I 1 4-231Fine sanay loam, ISM, hII., IA-2, A-4 I 5-20 170-90 165-90 150-85 125-65 I <3o I NP-18 '. I I loam, gravelly I SM-SC � I 1 I I I I 1 � I sandy loam. I 1 l I I I I 1 I i IZ3-601Fine sandy loam, �SM, ML, IA-2, A-4 I 5-15 170-90 160-85 150-�5 I20-6o- I <30 � NP-18 � I I loam, gravelly I SM-SC 1 I I I I I I I I ' , � � sandy loam. � � � � � � � � � :,, � � � � � � � � � � � � ' *: I 1 1 I I I I I I I I xton----------I 0-U IExtremely stony �SM, ML, IA-Z, A-4 I10-25 I80-90 {'/0-85 160-80 130-65 I <30 I NP-18 ! ' I � �£Sne sandy loam.� SM-SC � � -� � � - I � I � I 4-231Fine sandy loam, ISM, PII., IA-2, n-0 I 5-Zo 170-90 165-90 I50-85 125-65 I <30 � NP-18 I I loam, grave119 I SM-SC I I I I I I I I I I sandy loam. I I I I I I I I I 123-601Fine sandy loam, ISM, ML, IA-2, A-4 I 5-15 I70-90 160-85 I50-75 120-60 I >3o I NP-18 ` ` I I loam, gravelly � SM-SC I I I I I I I I . I 1 sandy loam. I I I I 1 I I I I I I I I , I I I I I I I 'ontauk---------I 0-2 IExtremely stony ISM, ML, IA-2, A-4,1 5-25 165-80 I60-75 130-75 I15-70 I <20 I NP-4 � � flne sandy loam.� GM � A-1 � � � � � . � � - I 2-221Fine sandy loam, 1�1, M1II. IA-1, A-2,1 0-5 160-100155-95 135-90 115-80 I <2o I NP-4 . I I silt loam, I I A-4 I I I 1 1 I I ' I I gravelly sendy I � I I I I I I 1 I I loam. I I I ' I I I I I I 122-60�Sandy loam� loamy�SM. SP-SM��A-1� A-2�� 0-5 I60-100155-95 120-Bo �10-50 I <15 � NP-2 , I � 1 eand, gravelly � GM, GP-GM� A-4, A-3� � � � � � � I I I sandy loam. I � I I � � I I � I I I 1 I I I I I I I C*: I i I I I I I I I 1 I axton----------1 0-9 IFine sandy loam ISM, ML, IA-2, A-4 1 0-lo I8o-95 I75-90 160-85 130-65 I <30 I NP-18 I I I SM-SC I I I I I I I I j 1 9-231Fine sandy 1oam, ISM, MI,, IA-2, A-4 I 0-15 �70-90 165-90 150-85 125-65 I <30 I NP-18 i I loam, grave119 1 SM-SC I I I 1 I I I I ' 1 I sandy loam. I I I I I i I I I � 123-601FSne sandy loam, ISM, MI., IA-2, A-4 I 0-15 I70-90 160-85 �50-75 IZO-60 I <30 I NP-18 � I loam, gravelly I SM-SC I I I I I I I 1 I I sandy loam. � I ' . I I I I I I I � ' I I 1 I I I I I I I I II rban land. � � � � � � � � � � � � � ______� � � � � � � � � � � � � - � I 0-9 ILoamy PSne sand ISP, SM� �A-2-4�, � 0 195-10019o-100160-So I �-20 � --- � NP � 1pestone I I 1 SP-SM I A-3 I I 1 I I I I I 9-z8lsana, ioamy-sana,ISP-SM, se,1a-2-4, I o 1�95-10o19o-iool6o-So I o-i5 I --- I NP I ' I I flne sand. 1 SM I A-3 I I I I I I _ I Iz8-6oisana, fine sana ISP-SM, sP la-3, I o 195-ioo19o-iool50-8o I o-io I - - � I NP �; , I i I I A-2-4 I I I 1 I I I � �� j i I I I I I I I I I I II �:� I I I I I I I ' I I I I its I I I I I I 1 I I f I I I I I I I I I . I I I �3--------------I o-lolFine sanay loam �SM, MT. IA-4, A-2 I o 195-100185-100155-95 130-75 ( <25 1 NP-18 ` .>lluz I10-351Sandy loam, flne (SM, ML IA-2, A-4 I 0 190-100185-100155-95 125-65 I <25 1 NP-18 I I sandy loam. I 1 1 1 I I I I I ', 135-6o�stratified silt IM1II., SM IA-4, A-2 I 0 Y 100 I lo0 165-100125-90 I <25 I NP-lb ' I I loam to very I 1 I I I I I I I i I 1 fine sand. I I I I I 1 I I I I I I I I I I I I I I �o�B, POC, PoD----� 0-7 IVery stony loamy ISM �A-2 I 5-15 190-100185-100150-85 I20-30 I --- I NY oquonock I I sand. I I I I I 1 I I I � �, 1 �7-z41Loa,�y ri�e sana, Ism In-z 1 0-5 19o-iool6o-85 150-&5 lio-3o 1 -- I Ne 1 I loamy sand, 1 I I I I I 1 I I l s I I sana. I I I I I 1 I 1 I 124-601Gravelly loam, ISM, MI. IA-2, A-4 � 5-15 185-90 I70-85 145-75 125-70 I <30 I NP-4 I 1 gravelly eandy I I I � I I I I I 'r I I loam, fine sandy� I I I I I I I I I I loam. I I I I I I I I I I I I I I I I I I I I @u�. I I I I I I I I I I I �uarMes I I 1 1 I I I I I I I ; I I I I I I I I I I I i � � See footnote at �end of table. � I � ' ' � � ' Essez County, Massachuseris,Southern Part � 161 ! t '� TAHLE 15•--PHYSICAL AND CHEMICAL PROPERTIES OF TF3E SOILS--Continued Erosion Soil name and I Depth � Permeabillty � Available � Soil reaction 1 Shrink-swell I factors ( i map symbol I - I i water capacity i I potentSal I�- � � I I R I T I In I In/hr In/1� �H I ' NnA, NnB'______'_ � 1 I� � I � � . I 0-9 I 2.0-6.0 I 0.13-0.25 I 4.5-6�.0 ILow------------� 0.28 I 3 - � Ninigret I 9-33 I 2.0-6.0 I 0.06-0.18 � 4.5-6.0 �Low------------� 0.32 I I 33-60 � 6.0-2o i 0.01-0.13 ( �.5-6.0 ILow------------I 0.10 � � � I I ' PaB, PaC, PaD--- � � � I 0-9 - I o.6-2.0 I O.o8-0.23 I 4.5-6.5 ILow-----------_� p,pq � 3 , , Paxton I 9-23 I 0.6-2.0 I o.06-O.zO I 4.5-6.5 I�w----------__I 0.32 I I 23-60 � 0.2 I 0.01-0.12 - I �-5-2•5 ILow------------I 0.20 � ' PbB, PbC, PbD---� I I � � � I I 0-k I o.6-6.0 � O.oB-0.23 �I U.5-6.5 17.ow------------� 0.20 I 3 Paxton I 4-23 I 0.6-6.0 � 0.06-0.20 I 4.5-6.5 ILow-----------_� 0.32 ( ; . � I z3-6o I <0.2 I o.05-o.lz I 4.5-6.5 ILaw-----_______� p.pq � � PcE£: I I I I I I I Paxton----------� 0-4 I 0.6-6.0 I 0.05-0.15 I 4.5-6.5 � ILow------------I o.2o I 3 I 4-23 I o.6-6.0 � O.o6-0.20� �I 4.5-6.5 ILow------------� 0,3p � I 23-60 I <0.2 I 0.05-0.72 I k.5-6.5 ILow------------I 0.24 � y � I ' � � '_ Montauk---------I o-2 I 0.6-6.0 I 0.17-0.15„ I 3.6-6.0 ILow-----------j o.17 � 3 I 2-22. I 0.6-6.0 I o.70-0.16 � 3.6-6.0 . �Low-----------� 0.24 I iz2-60 i 0.06-0.6 � O.a2-0.16 . I 3.6-6.o ILow------------� 0.24 � I I I I I � I PdC�: ' Paxton----------I 0-9 I 0.6-2.0 I 0.08-0.23 I 4.5-6.5 ILow----------- � 0.24 I 3 I 9-23 � I o.6-2o I o.06-0.2o I 4.5-6.5 ILow---------___� 0.32 I t I z3-60 I <0.2 i O.a5-o.12 i � 4•5-6.5 ILow------------� 0.24 � � ( Urban land. . � � . � � i I I I I I - pe--------------I 0-9 I 6.0-20 � 0.07-0.10 I 4.5-7.3 ILow-----------j 0.17 j 5 . ', Pipestone I 9-2R I 6.0-20 � 0.06-0.09 � 4.5-7-3 ILow---------_--I 0.17 I I 28-6o I >2o I o.05-0.07 I 5•1-�.3 ILow------___ __� o.i7 I � � � I � I °i P6'. I i I I i I I Pits � � � I I I I I ' � � :P1s--------------� 0-10 I 2.a-6.o � 0.17-0.16 I 4.5-7.3 ILow-----------I o.28 I 3 � Pollux I 10-35 I 2.0-6.0 I 0.12-0.15 I 4.5-6.0 ILow------------� o.2g � ; . I 35-6o I o.06-0.6 I o.lb-o.21 I 4.5-7.3 ILow------------� 0.64 I '.PoB� PoC, PoD----� 0-'/ � 6.0-20 � 0.07-0.18 I 4.5-b.o �LOW------------� 0.1� � 3 Yoquonock I 7-24 I >6.o I o.06-0.14 1 4.5-6.0 ILow---------___� 0.17 I ! I zq-6o I <0.2 I o.08-0.72 I 4.5-6.o ILow------------I o.24 I t � � I I �Q,,•, � i i � � I I @uarrles I I i i � � � � ' i ; RdA-"'-'--'--"� 0-9 I o.6-6.0 �I 0.06-0.24 I 4.5-6.0 li.ow------------I. 0.24 I 3 � j , Ridqebury I 9-20 I 0.6-6.0 I 0.04-0.20 � 4.5-6.0 �Low------------� 0.32 I I 20-60 � <0.2 I o.01-0.05 I 4.5-6.o ILow------------I o.24 I ' R1A, tuB_"_'__'_I I I I _t. I I I o-9 I o.6-z.o I o.o2-o.z4 � 4.1-6.0 _�Low-----------I o.zo I 3 , Ridgebury I 9-20 I o.6-6.o I 0.04-0.20 I 4.5-6.0 �Low------------� 0.32 I ! , � 20-6o I <0.2 I o.01-0.05 I 4.5-6.0 �Low------------� 0.24 I . ' ttx}.: i i i I i I I : Rock outcrop. I ( ` I I I 1 ; ; Hoiiis---------_� 0-2 � o.z-6.o I o.io-o.0 I o.i-2o ILow-----------� o.i� I z I I 2-15 I o.6-2.o I o.02-0.18 I o.1-2.o ILow---------___� o.3z � I I ir I --- I --- I -- I--------------=1 ---- I ' I I I I I I I ,sb--------------� 3-0 � I 6.0-20 I . 0.20-0.45 I 4.5-6.0 ILow----------_ 1 ---- I 5 j , scarboro I 0-8 I >6.0 � 0.05-0.20 I 4.5-6.0 ILow---------- -� 0.17 � I 8-13 I >6.o I o.04-0.13 I u.5-6.0 ILow-----------I a.1� � I 13-19 I >6.0 1 0,02-0.13 I 4.5-6.0 �Low------------� 0.10 I ` . I 19-60 I >6.0 � � 0.01-0.13 I 4.5-6.0 ILow-------_____� 0.10 I I I I I I I I t , See footnote at end of table. � - , 1i '• 1 ( i ' ' t ' Essex County, Massachusetts, Southem Part � . -- 165 � ,` TABLE 16.--SOIL AND WATER FEATURES--Continued . I F1oodln Hi h water table ' I Risk of corrosion � , Soil name and IHydro-I IPotentiall�- . j map symbol � logicl Frequeney � Duration IMonths � Depth � Kind IMonths � frost �Uncoated �Concrete � ' Igroup I I I a I I I action I steel � Pt I I I I I I I I I I Iw+: I I I I I I I I I I � � Ipswich----------� D IFrequent----IVery br1eP�Jan-Dec� +1-0 �ApparentlTan-Dec� --- IHigh-----�High. � � � � � � � � � �� ' Westbrook----=---I D IFrequent----IVery brieflJan-Deel +1-0 IApparentlJan-Deel --- IHigh-----IHigh. I I I I I I I I I I ; ,Ma------------ ---I D �None--------I --- I --- I +1-0.51Apparentl0ct-AuglHigh-----IH1gh-----IModerate. � ' Maybid 1 I I � I 1 I - I I I I I I I I I . I I I I I �MeA, MeB----------I C INone--------� --- I -- I >6.0 � -- I --- IModerate IModerate IModerate. Melrose I 1 I I I I I I I I I I I I . I I I I I I � �MmA, MmB, MmC, I' I � I I I I I I I I t�mD-------------I A INone-------I --- I --- I >6.0 I --- I --- ILow------ILow------IHigh. Mercimac I I I I I I I I I I I I . I I I I I I I I , =MnBt: I I I I I I I I I I � ' Merrlmac---------I A INone--------I --- I --- I >6.0 I --- I --- ILow------ILow------IHigh. I I I I I I I I I I � Urnan land. I I I I. "I I I I I I I I I I I I I I I I � MoB, MoC, MsB, I I I I I I I I I I MsC, MSD, M,cC, I I I I I I I I I I � MxD--------------I C INone--------I --- I -- IZ•0-2 51Perched IFeb-MaylModerate ILow------IHigh. Montauk I I I I I I I I I I 1 f I I I I I I I I , �NnA, NnB----------I B INone--------� --- � I� --- I1.5-3•OlApparent�Nov-AprlModerate ILow-----�High. Ninigret � � � � � � � � � � � � � � � � � � � � � PaB,. PaC, Pan, I I I I L I I I ' I I PbH, PbC, PbD----� ; C INone--------� --- I --- I1.5-2-SIPerched INeb-Mar�Moderate ILow------�Moderate. Paxton . I 1 , I I I I I I I I f I I I I I I I I I I ! PcE�: � I I I ' I I I I I I I Paxton-----------I C INone--------1 --- I --- 11.5-2•5lPerched IFeb-tAarlModerate ILow------IModerate. I I I I I I I I I I � Montauk----------I C INone--------I --- I --- IZ•0-2.SIPerched IFeb-MaylModerate ILow------IF1igh. ; I I I I I I I I I I ; ract: L I I I I I I I I I Pazton-----------I C INone--------I --- I --- �1.5-2•SlPerched IPeb-MarlModerate ILow------IModerate. I I I I � I � I I I I 's 7rban land. I I I I I I I I I I ! : I I I I I I I I I I � .Pe----------------I A �INone--------I --- I --- 10.5-1.Slkpparentl0ct-JunlModerate ILow------IModerate. , Pipestone I I I I I I I I I I �Pgf. I I I I I I I I I I rita I I I I I I I I I I � : I I I I I I I I I I P1H---------------I C INone--------I --- I --- I >6.o I --- I --- IModerate ILow------IHigh. t Pollux I I I I I I I I I I I I I I I I I I I I � ,PoB, PoC, PoD----I C INone--------I --- I --- I1.5-3•OlPerched IFeb-MarlLow------ILow------IHigh. i Poquonock I I I I I I I I I I I I I I I I I I I - I eu*. I I I I I I I I I l j quarries I I I 1 I I I I I I �. iRdA, R1A, R1B----I C INone--------I --- I --- I 0-1.51Perched INov-MaylHigh-----IHigh-----IHigh. � Rldgebury I I I I I I I I I I 1 � � I I I 1 I I I I I �Rx{: 1 I I I I . I I I I I � Rock outcrop. � � � � � � � � � � � - � � . } � ' � � � � � � � � � Hollis-----------I C/D. INone--------I --- I --- I �>6.0 I --- I --- �Moderate ILow------IHSgh. I I I I I I I I I I I'� '';Sb---------------I D INone--------I --- I --- l +1-1.O�ApparentlJan-Dec�High----IHigh-----�High. Scarboro I I I I I I I I I I �- � I I I I I I I I I I See footnote at end of table. ,� it '� y F r ' < < , Essex County, Massachusetts, Southem Part �y ; ! ' Montauk soils. Included areas make up about 15 percent sides commonly collapse. This soil is a poor filter for ( ; of the unit septic tank absorption fields; effluent flowing through the The permeability of this Canton soil is moderately substratum causes a hazard of ground-water ' rapid in the subsoil and rapid in the subsVatum. contamination. Available water capacity is moderate. Reaction ranges This unit is in capability subclass Vlls. ' from extremely acid to medium acid. Most areas of this soil are in woodland. A tew areas ChC—Canton-Urban land complex, sloping. This are used for homesites. unit is on uplands. It consists of deep, well drained � Slope and the stones and boulders on the surtace Canton soils and areas covered by streets, parking lots, make this soil poorly suited to farming and to most buildings, and other structures. Slopes range from 3 to ' recreational uses. 15 percent. They are gently sloping or moderately This soil is poorly suited to trees. Slope and the sloping; smooth, undulating, or rolling; and 100 to 600 ` stones and boulders on the surtace limit the use of feet long. The areas of this unit are irregular in shape , woodland equipment. The soil is suitable for woodland and range from 10 to 50 acres. They consist of about 45 wildlife habitat. percent Canton soils, 35 percent urbanized areas, and Slope is a limitation of this soil as a site for dwellings, 20 percent other soils. The Canton soils and urbanized small commercial buildings, shallow excavations, or areas are so intermingled that it was not practical to map , septic tank absorption fields. The sidewalls of � them separately. : excavations in this soil are unstable, and the steeper Typically, the Canton soils have a surface layer of very sides commonly collapse. This soif is a poor filter for dark grayish brown fine sandy loam about 4 inches thick. , septic tank absorption fields; effluent flowing through the The subsoil is fine sandy loam about 24 inches thick: It substratum causes a hazard oi ground-water is dark yeilowish brown in the upper B inches and contamination. yellowish brown in the lower 18 inches. The"substratum ! ' This unit is in capability subclass Vlls. is grayish brown and olive gray gravelly loamy sand to a depth of 60 inches or more. CcE—Canton extremely stony fine sandy loam, 25 Included in this unit in mapping are small areas of ,_ to 35 percent slopes.This soil is deep, steep, and well Hollis, Ridgebury, Scituate, Swansea, and Whftman soils. I drained. It is in irregularly shaped areas on the sides of The permeability of the areas of Canton soils is '� hills. The areas range from 10 to 100 acres. Slopes are moderately rapid in the subsoil and rapid in the smooth, convex, and 150 to 600 feet long: Stones and subsVatum. Available water capacity is.moderate. • boulders 1'to 3 feet in diameter and 10 to 30 feet apart Reaction ranges from e�ctremely acid to medium acid. are on the surface. The Canton soils, or open part of this unit;are used Typically, the surtace layer is very dark grayish brown for lawns, gardens, parks, and building sites and are ' fine sandy loam about 3 inches thick. The subsoil is fine suited to such uses. sandy loam about 22 inches thick. It is dark yellowish Slope limits fhis unit as a site for small commercial .i brown in the upper 6 inches and yellowish brown in the buildings or dwellings or for septic tank abso�ption fields � lower 16 inches. The substratum is grayish brown and in areas where slopes are more than 8 percent. The y olive gray gravelly loamy sand to a depth of 60 inches or rapid permeability in the subsVatum causes a haiard of � more. ground-water contamination in areas used for septic tank 1 a � Included with this soil in mapping are areas of Hollis absorption fields. The sidewalls of shallow excavations in ' , and Montauk soils and rock outcrop. Included areas this unit are unstable, and steeper sides commonly . make up about 20 percent of the unit and generally are collapse. In places, la�ge stones on the surface limit the �i t less than 5 acres each. area for recreationai development The permeability of this Canton soil is moderately This unit is not assigned to a capability subclass. ' trapid in the subsoil and rapid in the substratum. ! Available water capacity is moderate: Reaction ranges � CrC—Chatfield-Hollfs-Rock outcrop complex, 3 to « `:from extremety acid to medium acid 15 percenfslopes.This unit is on unduiating and rolling 'fi:i, Slope and stones and boulders on the surtace make ridges and fiills: It consists of well drained, moderately ` this soil poorly suited to farming and to most recreational deep Chatfield soils; somewhat excess'ively drained, j �f uses. Most areas are wooded, but the soil is poorly shallow Hollis soils; and exposed bedrock. The areas are suited to trees. Slope and the stones and boulders on irregularly shaped and range'from 10 to 200 acres. °;; the surtace limit the use of woodland equipment. The Slopes range from 50 to 1,000 feet long. The areas of ';•:soil is suitable for woodland wildlife habitat. exposed bedrock are 10 to 100 feet apart.The surtace `- Slope is a limitation of this soil as a site for dwellings, of the unit has stones and boulders 1 to 4 feet in `i l;small commercial buildings, shallow excavations, and diameter that are 10 to 100 feet apart. The unit consists %septic tank absorption fields. The sidewalls of of about 40 percent Chatlield soils, 25 percent Hollis f:excavations in this soil are unstabie, and the steeper soils, 20 percent Rock outcrop, and 15 percent other �) ,;� Fc z,�'.'� �^":_ �, 20 ; '�` Soil survey 7 � soils. The soils and exposed roc that it was not practical to map them separatelyn9l� lower 17 inches. The substratum is very firm, light olive' . very da klgray sh brownv ery fine sandy oam about�f brown gravelly ve � Granite bedrock i at a depth of 34 in hes.hes thick. i inch thick. The subsoiF is 16 inches thick. It is dark brown � brown fine s ndy loam abo t 3 nches th ckaThe ubsoj�, very fine sandy loam in the upper 5 inches and dark Ye��owish brown gravelly very fine sandy loam in the �S dark yellowish brown fine sandy loam about 15 inches � � lower t t inches. The substratum is ve firm, li ht olive �, thick. Hard granite bedrock is at a depth of about 18 brown gravelly very fine sandy loam 17 inchesthick. �nches. '' Granite bedrock,is at a depth ot 34 inches. �ncluded with this complez in mapping are small areas brown�f nle sandy lolam abo t 3 nches h ckaThe ubso I °f Canton, Freetown, Montauk, Paxton, Ridgebury, is dark yellowish brown fine sandy loam about 15 inches SWansea, Whitman, and Woodbridge soils. ' The permeability of4hese Chatfield and Hollis soils is thick. Hard granite bedrock is at a depth of about 18 moderate or moderately rapid.Available water capacity � inches. is low or moderate in the Chatfield soils and very Iow in Included with this complex in ma the Hollis soiis. Reaction in both soils is very strongly of Canton, Frestown, Montauk, p Pp��9 are small areas acid to medium acid. Swansea, Whitman, and Woodbri 9�soiRidgebury, � The permeability of these Chatfield and Hollis soils is Most areas of this unit are wooded. A few areas are moderate or moderately rapid. qvailable water capacity used for homesites: is low or moderate in the Chatfield soils and very�oW�� The areas of exposed bedrock, the stones and ' the Hollis soifs. Reaction of both soils ranges from �e boulders on the surtace, and the slope make this unit strongly acid to medium acid. �Y teesYbut t etHoli msoi�ls ahe poorly�suitedSThe st n Sto Most areas of this unit are woaded. A few areas are and boulders on the surface, the shallow depth to used for homesites. bedrock in the Hollis soils, the outcro The areas of exposed bedrock and the stones and and slope limit the unit for recreationalpdevelopment ck, `; boulders on the surtace make the soils in this unit oorl suited to farming. The Chattield soils are suited to teesY a sitef oradw pe�g, small commehcial buildines,e soils as but the Hollis soils are poorly suited. The stones and 9 septic ', boulders on the surface, the shallow depth to rock in the tank absorption fields, or shallow excavations. This unit is in capability subclass Vlls. i Hollis soils, and the outcroppings of bedrock limit the '' areas of this unit for recreational development. �e—Deertield loamy fine sand. This soil is deep, The depth to bedrock limits this unit as a site for nearly level and gently sloping, and moderately we�� dwellings, small commercial buildings, septic tank drained. It is on broad areas near streams. The areas ': absorption fields, or shallow excavations. Slope is also a Slopes range from 0 to 6 percent, are smooth, and are are irregularly shaped and range from 5 to 40 acres. limitation for small commercial buildings. '_ This unit is in capability subclass Vlls. 100 to 800 feet long. ` CrD—Chatfield-Hollis-Rock outcrop complex, 15 to TYp�cally, the surtace layer is black loamy fine sand '� 35 percent slopes. This unit is on ridges and hills. It about 6 inches thick. The subsoil is dark brown loamy ' `mottied a d ext nds to a depth ofh6ps�bhtestor more. It somewhatf xce�sively drainedr shallow HolCl sa o1esa a�d' �s sVaCrfied light brownish gray loamy sand, brown sand, � exposed bedrock. The areas are irregularly shaped and and light yellowish brown fine sand. range from 15 to 1,25p acres. Slopes are complex and ��cluded with this soil in mapping are small areas of ', range from 100 to 1,200 feet long. The areas of ex osed W�ndsor soils on knolls and Wareham soils in bedrock aze 10 to 100 feet apart. The surtace of the unit depressions. They make up about 15 percent of the unit. � � has stones and boulders 1 to 4 feet in diameter that are 10 to 100 feet a The permeability oi this Deertield soil is rapid in the '< part. The unit consists of about 40 subsoil and rapid to very rapid in the substratum. percent Chatfield soils, 25 percent Hoilis soils, 20 A�ailable water ca aci � , PerceM exposed bedrock, �ery strongly acid o m dium acideq seasona9l high ater ' The soils and ex and 15 percent other soils. table is at a depth of about 24 inches during winter and was not practicaPto ap t em separately,�n9�ed that it Typically, the ChaNield soils have a suRace layer of SPring. Most areas of this soii are in woodland. Some areas i > �ery dark grayish brown very fine sandy loam about 7 are farmed, and some are used for homesites. inch thick. The subsoil is 16 inches thick. It is dark brown �ery fine sandy loam in the upper 5 inches and dark This soil is suited to cultivated crops and to hay and Ye�lowish brown pasture. The seasonal high water table commonly keeps gravelly very fine sandy loam in the the soil wet in earl s rin � operations. Drainage s n ed d n Isome areas used for. '' � i t u— ��_ ��--�- ' � 1 '� 126 Sal survey , i ; ;e TABLE 10.--BOILDING SITE�DEVELOPt4EtiT--Continued � 'L Soll name and -, �: - . Shallow.- . I . Dsellinga - I Dwellings I Small I Loca1 roads �� Lawns andr`i� � i � map symDol� - �� excavations I - without � with � � commercial I and streets I landscaping I � I basements� I basements I buildin s I � � 'f . _ . . . . . . . _ . 1 _ I I I I I I ? cnc*: I 1 I I I � t ; OrDan land. ��- - ' � � � � - � - � � I I I j �, � crci: ;� Chatfleld--------�Severe: 1Moderate: �Severe: �Severe: IModerate:� �Moderate:. . ��h`�s�i. . I depth to.rock.l slope, I depth to rock.� slope. I� slope, ( amall atones `�� r � I I depth to rock.l i � depth to rock,l large stones F�'`+ � I I froat action. i slope. .� : �� Hollis-----------Iseyere: ISevere: �Severe: (Severe: - fsevere: Isevere: r�", " i�depth to roek.i depth to rock.' depth to rock.l depth to rock,� depth to rock.l thin layer -r ` � I slope. I I �.': � �.; Rock outcrop. I - I I . I I I � ;: , I I ' I I � CrD�: I ` ChatPield--------ISeVere: �SeVere: ISeVere: �SeVece: ISeVeCe: �SeVeCe: ,,,';� � � I depth to rock,l slope. � depth to rock,I slope. � slope. � slope. ,`� '- i slope. i i slope. I I , � . I I I Hollis----------ISevere: �Severe: ISevere: �Severe: ISevere: (Severe: �.-�� . I depth to rock,l depth to rock, l depth to rock,1 depth to rock,l depth to roek,� slope, . I� slope. i slope. i slope. i slope. I slope. I thin layer. � � , Rock outcrop. I I I I I � .:�� I I I I I I , ! � De----------------�Severe: IModeraCe: ISevere: IModerate: IModerate: IModerate: . Deerfleld � cutbanks cave,I wetness. I wetness. I wetness. � i frost action, I wetness. � � i wetness. i i i i wetness. i . �. �'`• - � I � Dumps I I I I 1 I , � I I I I I I ElA---------------ISevere: � IModerate: ISevere: � IModerate: �Severe: IModerate: Elmridge I wetness. I wetneas. I wetnesa. � wetness. I low atrength, 1 wetness. ', i I 1 � I 1 frost action. 1 I I � I I , f E19---------------ISevere: IModerate: 1Severe: �Moderate: ISevere: � �Moderate: � Elmridge I wetneas. I wetnesa. - I wetnese. I wetness, I low strength, I wetness. I I I I slope. I frost aetion. I FF. j � I 1 I I � I i I I I � : Fluvaquents I � I � I � � I 1 I I 1 �----------------Isevere: ISevere: ISevere: � ISevere: ISevere: 13evere: Preetorm I wetness, � �wetness, � I wetness, I wetness, I wetness, I wetness, � I excess humus. I low strength. I low strength. I low strength. 1 lor strength, I excess humus. � ! � � I I I fcost action. I � ' i I I I I I . --------- Isevere: ISevere: � �Severe: Isevere: Isevere: Fp------- ISevere: Preetown � pondinq, � ponding, . I ponding, I ponding, � ponding, 1 ponding, � '.� i excess�humus. i Low strength. i low strength. i 1ow strength. I low atrength, I excess humus. ! i I I ' � i frost action. i tH£A---------------�Severe: ISlight---------ISlight---------�Slight---------�Sllght---------ISevere: ., Hinekley I cutbanks cave.l I I I 1 small stones�, I I I 1 I I droughty. � ; I I I 1 I I � HfB---------------�Severe: �Slight---------�Slight---------�Moderate: �Slight---------�Severe: Hinekley I cutbanka cave.l I � slope.� I I small stones, � � I � � � � droughty. . , - ___I � ( � ' � � � ; 9PC----------- �Severe: �Moderate: �Moderate: �Severe: 1Moderate: �Severe: Hinekley � cutbanks cave.l slope. � slope. I slope. � slope. � small stones, � I � � � I droughty. � HfD, HfE----------ISevere: ISevere: ISevere: � ISevere: ISevere: ISevere: � . Ninckley I slope, I slope. I slope. � I slope. I slope. I small stones, I cuttanks cave.l I I I I droughty, , . I � � � � � � � slope. r ! I I I I I f ; See footnote at end of table. � � ', i � 1 ;i` � � . s�`_^�. � 134 Sod su`e �:� ; TABLE 11.--SANITARY FACILZTIES--Continued 9 : cr' Soil name and I Septic tank � Sewage lagoon I - �Trench �� Area I Daily covee:,s � i ' ��map symbol I absorptlAn I areas ' I sanitarp I sanitary 1 for landfili<�:+� � ! I' rieias I I ianarul I landfill � ;�� ' i I I I I —J. � CeC ---------------�Severe: Isevere: Isevere: Isevere: IPoor: . ( � �" Canton I poor Pilter. I alope; I seepage. � seepage.� I seepage, ;�� ' � � I . 1 seepage. I I � I small atones u I I 1 I I t �� '� CcD CCE-- -------Isevere: - Isevere: . ISevere: ISevere: - IPoor: � Canton I poor Pllter, � slope, I seepage, � seepage, I seepage, `*��; ! � - . I elope. I seepage. I slope. I slope. I small stones� :�y'.; � � ( � . - � slope, r 'r ' ChC � � � � . � �xiyN�:. i� � � � � X� f Canton-------------ISevere: ISevere: ISevere: ISevere: IPoor: �r,,�,,,; �� I poor filter. I seepage, I seepage. � I seepage. I seepage, .; I I slope. I I I small stones a- '- I I I I I a� � Urban land. I I � I I I - . �. I I I I I ; �CrCt: I I I l I Chatfleld----------Isevere: ISevere: ISevere: ISevere: IPoor: ;_ I depth to rock. � seepage, � deptn to rock, � depth to rock, � area reclaim ' - I I depth to rock, I seepage. 1 seepage. I I I slope. I I I ; I I 1 I I '� • Hollis-------------ISevere: ISevere: . ISevere: ISevere: IPoor: - I depth to rock. I seepage, I depth to rock, I depth to rock, � area reclalm, � ( I depth to rock, I seepage. I seepage. I thin layer. ' I 1 slope. I I I I I I I I �: Rock outcrop. I � I I � I I - � CrD�: I 1 I I I c - '' Chatfiel3----------�Severe: . ISevere: ISevere: . . � . ISevere: iPoor: -:�' � I depth to rock, I seepage,. . . I depEh to rock, I depth. to rock, I area reclaim, jI slope. I depth to eock, � seepage, I seepage, � slope. � - I � I slope. I slope. . � I slope. I . � ___I I I I I Hollls---------- �Severe: �Severe: ISevere: �Severe: IPoor: , I depth to rock, 1 seepage, I depth to rock, I depth to roek, I area reclaim, f I slope. I depth to rock, I eeepage, I seepage, I thin Layer, , I i slope. I slope. I slope. I slope. I I I I I '. Rock outcrop. I I I I I I I I I I i. - -'�e------------------Isevere: Isevere: Isevere: Isevere: IPoor: � i . Deerfield I wetness, � seepage, I aeepage, � aeepage, I too sandy, I poor fllter. � 1 wetnese. I wetneas, � wetneas. � seepage. I I .. I too sandy. I I pu j I I I I � Dumps I i I I I I I I I I ', ElA-----------------�Severe: Islight-----------Isevere: �Moderate: IPoor: Elmridge � wetness, I 1 wetneas, � wetness. I too clayey, ` } i perce slowly. i i too claye9• I I hard to pack. . S1B-----------------�Severe: IModerate: Isevere: IModerate: IPoor: Elmridge � wetness, � slope. � wetness, I wetness. I too clayey, iperes slowly. i i too clayey. i i hard to pack. � ' pp. I I I I I Pluvaquents I I . 1 I I I I I I I � Pm---------------ISevere: Isevere: ISevere: Isevere: 1Poor: y ; Freetown I wetness. I wetneas, 1 wetness, I wetness, I excess humus, � ' I I excess humus, I eacess humus, 1 seepage. I wetness. 1 I seepage. I seepage. I 1 '. I I I I I � � See footnote at end o£ taDle. '' li '� l 's � , � ��. ' 140 Soil survey �'} ' TABLE 12.--CONSTRUCTION MATERIALS a��' #,. y [Some terme�that �deacMbe reatrictive sDil features are defined in the Glossary. See text Por definitions �of .."good," "fair," "poor," "probable,^ and "improbable." Absence of an entry indlcatea that the soil was ; 1 not rated], � � ' . .. . .. . . . . . . . . . � Soil name. and I Roadfill I Sand I Gravel I Topsoil � f t _map symDol '. . i . i . i f�$ � � , � � � � �� - �� . . AnB, AnC--------------IFair: IProbable-------------IProbable-------------IPoor: � �- ! ! � Annlsquam � large stones, � I 1 1 large stones-, i . I xetness. I I . � I. area reclaim. ;,� � I I I I � AnD-------------------IFair: �Probable-------------IProbaDle-------------IPoor: �i Annlequam I large stones, � I I large atonea, °k � � I wetnesa, I - I I area reclaim, -N . . � slope. I � I elope. 'ii>'s. � I ' . . ' I ' a� sa�. I I I I Beaches I I I I r ' I 1 I I ' ; s 9eB-------------------IPair: IImprobable: IImProbable: laooa. �'=' � 8elgrade I lor strength, I excess fines. I eacess fines. I I wetness. . � � � I I I � � BuA, BUB, BuC---------IPoor: �1mprobable: Ilmprobable: IPoor: � � Hoxford I low strength. � excess fines. � excess fines. I too clayey. .- I 1 I I � azs*: I I I I � Boxford--------------IPoor: IZmprobable: IImproDable: IPoor: � � I low atrength. I excess flnee. � ezcess fines. I too clayey. I I I I � Urban land. I I . I I I I I I CaB, CaC--------------IGood-----------------�Improbable: Ilmprobable: IPoor: � Canton I � I eacess Pines. I eacess fines. I area reclaim. � � � � � CbB, CbC-------------IGood-----------------IImprobable: IImprobable: IPoor: �� Canton � � I exceas Tines. I ezcesa Pinea. 1 small stones, � I I I I area reclalm. � I I I I , CbD-----------------IFair: IImprobable: � IImproDable: IPoor: � Canton � slope. I excess flnes. I excess finea. � small stonea, ' I I I I area reclaim, I � I I slope. � --------I I 1 ; - CeB, CcC--------------IGood--------- Ilmprobable: �Improbable: IPoor: � � Canton I I excess Pines. I excess Pines. I small stonea, �, . I . I � I 1 area reclaim. CcD-------------------�Palr: ' �Improbable: �ImproDable: IPoor: Canton � slope. I excess Plnes. I excess Pines. I small stones, �- ' I I � I 1 area reclaim, I I 1 I slope. i I I I � Cc�-------------------IPoor: Ilmprobable: IlmproDaDle: � IPoor: � Canton I alope. ( excess Pines. I excess fines. I� sma11 stonea, I � I � I area reclalm, �i I I I 1 slope. Cha: i I I I � � � Canton---------------I�ood----------------�improbable: IImprobable: IPoor. i i I I eacess flnes. I exceas finea. 1 area reclain. . I I 1 I Urban lflnd. I I I 1 I I f I � s �crc*: I I I I Chatfield------------�Poor: 1=mprobaDle: IlmproDable: IPoor: I area reclalm. I excesa fines. I excess fines. I small stones. �A I I I i : t See footnote� at end of table. . �� tr 1r � [ 1 _ , , � � � aas soi� S�Ne„ � s�� . :� i TABLS 13•--WATER MANAGEMENT--Contlnued � �' . .. , .:-. . . . -_� N N "Llmitationa Pbr-- � Featuees affecti � Soil��name and I' � � � - . F.mbanlwents, � � � � ,{r_�: � � . map symbol- 1 Pond reservoir l dlkes, and I Aquifer—fed I Dralnage � Grasaed � I areas I � .levees I excavatea onde 1 I waterw s � � ' I I I I , J � �crc�: I I i � � � Chfltfield--------ISevere: _ �Severe:. . �Severe: IDeep to water----ISlope, . � i slope. � I seepage,� � no water. � I droughty, �, �� i i piping. i i i depth to rock �. , _ --. Aollis-----------Isevere: Isevere: � Isevere: IDeep to�water----Islope, ' � .. ( depth to rock. 1 thin layer, 1 no water. � I depth to rock. � I Piping. I � I � � I �' Rock outcrop. I . � � . I I , . I I 1 I I '' ' Cr�*: I I I 1 I ' � Chatfield--------ISevere: ISevere: ISevere: IDeep to water----ISlope� � � slope. � � seepage, � no water. � I droughty, - � � I I piping. � � � � depth to rock. I i i I 1 t � Hollis-----------Isevere: ISevere: � Isevere: IDeep to water---Islope, ' � depth to rock, I thin layer, - I no water.� I I depth to rock. I slope. � piping. I I � I � � Roek outcrop. ' � � � � � ; � � � � � �, De--------------_�Severe: �Severe: �Sevece: ICutbanks cave----�D�oughty. Deerrield � I seepage. � I seepage. I cutbanks cave. I I �. Du j � � � I 1 • I I 1 I Dumps � I I I I � ElA_'___" � � . --------�Sllght------------�Moderate: ISevere: � �Peres slowly, IErodea easily, �� Elmrldge I I piping, ' I no water. I frost actlon. I peres slowly. I I hard Lo pack � � � 1 I wetness. .� I I I I. I i 1 I I E1B--------------IModerate: IModerate: � ISevere: �Peres slowly, IErodes easlly, F,lmrldge� �� slope. I piping, I no water: � � frost action, � peres slowly. � I I hard to pack, � � alope. I � � i i wetnesa._ I I I � . PF. I I � I I � I � � Pluvaquenta I I I I I 1 I ' 1 I I ; Fm----------------�Severe: ISevere: �Slight------------�Frost action-----IWetness: � 9reetown � seepage. I excess humus, I I I , I I wetness. � � � I � i I I ''; Fp----------------�Severe: isevere: `Islight-----------IProst action, IWetneas. - Freetown I aeepage. ( excess humus, I I ponding. � � ! I I pona�ng. 1 I I � : I I I I I HfA, HPB----------�Severe: 1Severe: ISevere: IDeep to water----ILarge stones, � Hinekley I seepage. � seepage. � no water. I I droughty. I I 1 I I � � HfC, HfD, H£E-----iSevere: �Severe: ISevere: - IDeep to rater---ILarge stonea, Ninckle.y I slope, I aeepage. I no water. I I droughty, I aeepage. 1 I I I slope. � 1 I I I I HUCi: I I I I 1 , � Hollis-----------1Severe: ISevere: ISevere: IDeep to watet----�Slope, 1 depth to rock. I thin layer, I no water. � .I depth to rock. 1 I piping. I I I I I I 1 I Urban land. I I I I I � d � I I 1 P Rock outcrop. � � � I � I I I I I See footnote at end of Cable. � i. c �r � fi ,� � E . � ,:�. : f . � 1 _ �,.. ts2 soil survey '�` , ` � TABLE 14.---ENaINEEftING INDEX PROP6RTIES--Continued , r�� a � � � � Classirication Prag- Percentage passing � �'� So11 name and IDepthi USDA texture � - Imenta I � sieve number-- ILSquid I plas �,� j ( map eymtiol I � . � Unified � AASHTO � > 3 � - � limit I ticity �; 'E I � . ' I . � . �� I Iinchesl 4 I 10 ( 40 � 200 � I Sndez ° �� In Pet Pet I � i I I I I I I I I I 1 �� ces, coc, COD----I:�A-4 IVery stony rine Isx, ru. Ia-2, a-4 I 5-i5 I8o-95 170-90 ISo-BS 130-60 � <30 � NP-8 ' j � Canton I I sandy loam. I I 1 I I I I I f c' I 4-281Fine sanay ioam, IsM, hu. � In-z, p-4 I o-10 IBo-95 170-90 ISo-85 130-60� 1 <3� I NP-8 1- I very fine sandy I i I I 1 I I I I ��- � I I loam, graveily I I I I I 1 I I I ' I I loam. I I I I I I I t I . 128-60�Gravelly 1 amy� ISM, �SP-SM IA-1, A-2 I10-25 165-85 150-80 120-60 110-30 � -- I NP �" � I I sand, loamy £inel I I i I I I I I ' I I sand, gravelly I 1 I I I I I I I I I loamy coarse I I I I I I I I I I I sand. I I I I I I F I I �'- I I I I I I I I I I I � cca, ceC, ceD, I I I I � I I I 1 I I ' ' CcE-------------I 0-4 IExtremely atony ISM, MI. lA-2, A-4 I10-30 I70-95 160-90 140-85 IZS-60 ( <30 I NP-8 ., �` Canton I I flne sandy loam.l I I I I I I I I I 4-281Nine sandy loam, ISM, PII. IA-2, A-4 I� 0-10 �80-95 170-90 150-85 130-60 I <30 I NP-8 ; I I very fine sandy I - I i I I I I I I I I loam, gravelly . I I I I I I I I I I � �oam. I I I I I I I I I 128-60�Gravelly ioamy ISM, SP-SM la-1, a-2 �I10-25 165-85 ISo-8o I2o-6o 110-3o I --- I NP � �, I I sand, loamy flnel I I I I I I I I 1 I sand, gravelly 1 1 1 I I 1 I I I �' I I loamy coarse � I I I I I I I I I I sand. I I I I I I I I I � I I I I 1 1 I I I I I cnc*: i I 1 I I I I I I I I � Canton----------I 0-4 Ii+lne sandy loam �ISM, PII. IA-2, A-4 I 0-5 185-95 ITS-90 155-85 130-60 I <30 1 NP-8 � I 4-281P1ne sandy loam, ISM, PII. IA-2, A=4 I 0-10 I80-95 �170-90 I50-85 130-60 I <30 I NP-8 I I very £ine sandy I I I I I I I I I I I loam, gravelly I I I I I I I I I I I loam. I I I I 1 I I I I � �. 128-601Gravelly loa¢ty 1SM, SP-SM IA-1, A-2 I10-25 165-85 150-BO I20-60 I10-30 I --- I NP I I sand, loamy rinel I I 1 I I I I I 1 I sand, gravelly I I � I I I � I 1 I f loam9 coarse � I I I I I I I I �� I I sand. I I I I 1 I I I I � I I I I I I I I I I I Urban land. I 1 I 1 I I I I I I I ` I 1 I I I I I I I I 1 ' ,�crct, crD+: I I I I I I I I I I I � Chatfleld-------� 0-S �Extremely stony ISM, GM, �A-4, A-2,1 5-25 155-80 �50-�5 130-65 I15-50 � 30-20 I 1-6 I I flne sandy loam.I GM-GC, I A-7 I I � I I 1 I l ; I 1 I SM-SC F I I I I I I I � 1 5-341Loam, gravelly ISM, ML, IA-4, A-2,1 0-5� 160-95 I55-90 135-80 RS-65 I 10-20 I 1-6 ~ I I loam, gravelly 1 GM, CL-ML� A-1 � I � I I I I �; I I sandy loam. I I " I I I I I I I I 34 IUnweathered I --- I --- 1 --- 1 --- I -- I -- I --- I --- I --- ; • I I bedrock. I I I I i I I I 1 �� I I 1 I 1 I I I I 1 I xouf.s----------I o-3 IEztremely stony IsM, nu, Ia-2,� a-4 �10-25 175-100165-95 140-85 125-7o I <2o I NP-3 I I fine sandy loam.l I I I 1 I I I I I 3-181FSne sandy loam, ISM, ML IA-2, A-4 I 0-15 175-9�5 165-95 140-80 120-65 ( --- I NP fy I I sandy loam, I I 1 { I 1 I I. I , I I gravelly loam. I 1 I I 1 I I I I I 18 IUnweathered I --- I --- I --- I --- 1 --- I --- I --- 1 -- I --- � I I`bedrock. I 1 I I I 1 I I I I I I I I I I I I I I � j Rock outcrop. I I I I I 1 1 I 1 I I I I I I I I I I I 1 I De---------------I 0-6 ILoamy fine sand ISP-SM, SM IA-1, A-2 � 0 195-100180-100I40-75 I 5-40 � --- I NP �� Deerfield I 1 I I n-3, A-k� I I I I I I I 6-24�Loamy sand, sand,ISM, SP-SM IA-1, A-2,I 0 195-100180-300140-75 1 5-30 I --- I NP i t I I coarse sana. � I A-3 I I I I I I I 124-6olsac,a, fine sana, Isr, sm In-i, n-2,1 0 195-ioo165-ioo13o-75 I 3-3o I --- I NP � I I coarse sana. I I n-3 I I I I I I I ' I I I I I I I I I I I nu■. I I I I 1 I I I I I I 1 P Dumps I i I I I I I I I I I I I I I 1 I I I I I I �! See footnote at end of table. � � ', ci � , ` �ssex County, Massachusetts, Southem Part � 159 ri ' � TABLE 15---PHYSICAL AND CHEMICAL PROPERTIES OF THE SOILS �The symbol < means less than; > means more than. Entries under "Erosion factors--T" apply to the entire profile. Absence of .an entry indicates that data were not available or were not estimated] 4 �f Erosion So11 name and- � Depth � Permeability I AvallaDle � Soil reaction I Shrink-awell I factora r map symDol I I " i �water capacity I � potential � 1 IIn Zn �hr In/in I � � � K I T I I I I 1 I I nB, AnC, AnD----I o-4 1 2.0-6.0 � � 0.11-0.17 I 3•6-6.0 �Low------------� 0.17 I- 3 �annisqua,� I 4-z8 I z.o-6.o I o.o3-o.ii I 3.6-6.o ILorr------------I o.za � � � I 26-60 � . o.z-o.6 I o.oi-o.o8 � 3.6-6.o (Low---------_-I o.z4 I � ,a � � 1 1 I I � '• I I I I 1 Beaches i i i � I I I IIeB--------------I o-9 I o.6-2.a I o.i8-o.z5 I 4.5-7•3 ILow-----------I o.v9 I 3 �Belgrade 1 9-uz I o.6-z.o I o.16-o.zo �I 4.5-7•3 ILow------------I o.64 I I .42-6o I o.06-6.o I o.06-0.2o I 5•i-7.3 ILow------------� 0.64 � • I I I I I I 1 uA, suB, suC----I , 0-9 I 0.2-0.6 I o.16-0.24 I 4.5-6.5 ILow------------� 0.32 I 3 j ":Boxford 1 9-17 I 0.06-0.2 I 0.15-0.22 �I 4.5-6.5 ILow-----------I o.49 I I 17-44 I <0.2 I 0.13-0.15 I 5.1-7.3 IModerate-------I 0.49 I . �� I 4u-6o 1 <o.z I o.ii-o.i5 " I 5.i-7.3 IModerate-------I o.49 I I I I I I I �xA�: � � � � � - � � � � .Box£ord---------I - 0-9 . I o.2-0.6 i o.16-o.2B 1 4.5-6.5 ILow---------___� 0.32 I 3 ! . I 9-17 I o.06-0.2 I 0.75-0.22 I 4.5-6.5 ILow------------� 0.49 I �I 17-44 I <0.2 � 0.13-0.15 I 5.1-7.3 IModerate-------I �' 0.49 I � � I 44-60 � <0.2 I 0.11-0.15 I 5.1=7.3 IModerate-------I 0.49 1 � 1 I I I 1 i Urban land. I I I 1 I I I � I I I I I I � ' aB, CaC---------1 0-T I 2 0-6.0 I 0.11-0.19 I 3.6-6.0 ILow------------� 0.24 I 3 '�Canton I 7-28 � 2.0-6.o I 0.09-0.17 I 3.6-6.0 ILow------------I o.28 I I 28-60 � 6.0-2o I , 0.04-0.08 � 3.6-6.0 ILow------------� 0.17 � � 1 I I I . I I I � ID», croc, cbD----I 0-4 I 2.0-6.0 I 0.13-0.20 � 3.6-6.0 - ILow------------� 0.20 I 3 �� `Canton I 4-28 � 2.0-6.0 I 0.09-0.17 � 3:6-6.0 ILow------------I 0.28 I I 28-60 I 6.0-20 I 0.04-0.08 I 3.6-6.0 ILow-----------I 0.1� � �l 1 � 1 I I I I � cB, Cac, CeD, I I I . I I I I :CcE-------------I 0-4 I 2.0-6.0 I 0.13-0.17 I 3.6-6.0 ILow------------I- 0.20 I 3 ` canton t 4-ze I 2.0-6.o I o.o9-o.i7 I 3.6-6.o ILou------------I o.z8 I I 28-6o I 6.o-zo I o.04-0.08 � I 3•6-6.o ILow------------I o.17 � ��hC=: I I I I 1 I I � Canton---------I 0-4 I 2.0-6.0 I 0.11-0.19 I 3.6-6.o ILow------------I 0.24 I 3 I 4-28 � 2.0-6.0 I 0.09-0.17 I 3.6-6.0 ILON------------I 0.28 � �' I 28-60 .I 6.0-20 � I 0.04-0.08 I �3.6-6.0 ILow------------I 0.17 I � I I I 1 1 I I . �Urban land. � . � � , � � � � SrC CrD I I I � I I I ' *' I I I I I Chatfield-------I o-5 I o.6-6.o I o.o6-o.i4 I 4.5-6.0 �Low------------I o.2o I 3 - I 5-3� I 0.6-6.o I- 0.08-0.15 I �.5-6.0 �Low------------I 0.20 I I 34 t --- � -- � --- I---------------� ---- I I i I I I I I Hc1111s---------� 0-3 I 0.6-6.0 � � 0.30-0.21 � 4.5-6.0 ILow--------__� 0.17 I 2 , I �3-18 - I o.6-6.o I o.06-0.18 � 4.5-6.o I[.ow-=----------I o.32 I �� i ie I --- � --- � --- i---------------� ---- i � ;Rock outcrop. � . I I I � I I �- I I I I 1 I I e---------------I 0-6�� 1 6.0-20 I 0.07-0.13 I b.5-6.5 ILow------------� 0.17 I 5 �Deerfield � I 6-24 I 6.0-20 I 0.01-0.13 I �.5-6.5 � I�w--------=--I 0.17 I I 24-60 � I >6.0 I 0.01-0.08 I 4.5-6.5 ILow------------I 0.17 � ' ; 1 I - I I I 1 I DU�. �Dumps I 1 I I I I I I I I I I I I i � See footnote at end of table. ' ir , Ei � r� � � �� Soilsurvey `�`°� �� -.- � � TABLE 76.--SOIL AND WATER FEATURES � . �� ["Flooding" and "water table" �and�terma sueh As "rare," "brief," "apparent," and "perched" are explained in the text. The symboY G�means�less than;� > means more than. Absence of an entry indicates that the feature Is �_� not� a concern]- .. _ - . _ � . � Floodi � Hi h water table � Risk of corroslon � Soll name -and �Hydro-I - �- �� .IPotentiall�— � � I � map symbol ��logic�-Frequency I Duration �Months �� Depth f KSnd �IM1ionths � frost IUncoated IConcrete �. � � . - Igroup .I �'- . I � � I I- I . I - I action I steel I �. Pt — r, . AnH, AnC, AnD-----I�- �C � �None--------I ---� � - -I -�-- I1.5-2•51Perched IJan-AprlModerate ILow------�High. � � ; Annisquam I I I 1 I I I I I I saf. I I I I I I I I I I �, Beaches � � � � . � � � � � � ` , I I � I I I I I I I BeB--------------I B INone---=----� --- I --- I1.5-3-SIAPParentlNov-AprlHigh----IModerate IModerate. Belgrade I I I I I I I I I I I I I I I I I I I I BuA, BuB, BuC-----� � C INone--------I --- I --- I1.0-3.OIApparentlNov-AprlHigh----IHigh-----IModerate. � Boxford I I I I I 1 I I I I i I I I I I I I I I i sza*: I I I ' I I I I I I I Boxford----------i- C iNone--------I . I i1.0-3.OiApparentiNov-ApriHigh-----iH1gh-----iModerate. �: UCban land. I I � � � � � � � � CaB, CaC, CbB, I I I I I I I I I I CbC, CbD, CcB, I I I I I I I f I 1 �} CcC, CcD, CcE----I B INone--------I --- I --- I >6.0 I --- I --- 1[.ow------ILow------IHigh. � Canton I I I I I I I I ' I � ' I I I I I I I I I I I .� cnc�: I I I I I I I I I I , Canton-----------I B INone--------� --- I --- I >6.0. I --- I --- ILow------ILow-----�High. I I I I i I I I I I OrDan land. I I I � � I I I I I I I I I I I I I I I 4�, crc• crDt: I 1 I I I i I I I I Chatfield--------� B INone--------I --- I --- I >6.0 � --- � -- IModerate ILow------IModerate. I 1 I I I I I I I I . �� Hollis----------I C/D INone--------I -- 1 --- I >6.0 I --- I --- IModerate ILow------IHigh. � I � I I I I I I I I i � Rock outcrop. I I I I 1 I I I I I -------I I 1 I 1 f I I I I � De--------- I B INone--------) --- I --- I1•5-3•OlApparentlDec-AprlModerate ILow------IHigh. Deerfield I I I I I I I I I I + I 1 I I I I 1 I I I � ; Dut. I I I I 1 I I l I I DumPs �' 1 I I I i I I I I I I I I f ' � I f I I I I � � ElA, E1B----------� C INone--------� --- I --- I1.5-3•OlPerched INov-MaylHlgh-----IModerate IModerate. Elmridge I I I I I I I I I I ' I I I I I I I I I I � FF. I I I , I I I I I I I Fluvaquents I I I I I I I I I 1 ! 1 I I I I 1 I I I I N�----------------I D �None--------� --- I -- I 0-1.OIApparentlJan-DeclKigh-----IHigh----�High. . � � Freetown 1 I I I I I I I I I I I I I I I I I I I Pp----------------I D INone--------� --- I --- I +3-0 IApparentlJan-DeclHigh-----IHigh-----IHlgh. Freetown I I I I I I I I I � I I 1 I I I I I I I � ! HPA, HfB, HfC, I i I 1 I I I I I I � HfD, H£E---------� A INone--------I --- I --- I >6.0 � --- � --- ILow------ILow------�High. Hlnckley I I I I I I I I I I i I I 1 I I I I I I ; xuct: i I I I 1 I I I I I � i Aollis-----------I C/D INone--------I --- I --- I >6.0 I --- I --- IMoaerate ILow------IHigh. I I I I d I I I I I Urban land. I I I I I I I I I f ,' 1 I I I I I I I I I Rock outcrop. 1 I 1 I I I I 1 I I < < I I I I 1 I I I I I See footnote at end of table. � . . �, l3 � Ll �! 40 � Soil survey �i , and the use of water-tolerant plants will he�p overcome ' the wetness. RIB— This soii is suited to trees, but wetness limits the use R�dgebuty extremely stony fine sandy loam, � of woodland equipment. The soil also is suited to 3 to 8 percent slopes. This soil is dee I � woodland and wetland wildlife habitat, but wetness limits and poo��y drained. It is in depressions and alo��yloping, � drainageways. The areas are irre ular in sh e recreational development. and narrow and mainly range from 5 to 40 The seasonal high water table limits this soil as a site � °f�ong are smooth, slightly concave, and 50 to 600 feet long� for dwepings, small commercial buildings, septic tank The surtace has stones and boulders 1 to 3 feet in ; � absorption fields, and shallow excavations. The slow or d��eter that are 5 to 100 feet apart. �ery slow permeabiliry of the substratum is an added limitation for septic tank abso TYPically, the surtace layer is very dark brown fine i t This unit is in rPtion fields. ��dY�oam about 9 inches thick. The subsoil is mottled capability subclass Iliw, and is about 11 inches tfiick: It is olive fine san R�A—Ridgebu �n the uppe�5 inches and olive gray g�avell � �oam � ry extremely stony fine sandy loam, 1O the lower 6 inches. The substratum is firm,�ndy�oam 0 to 3 percent slopes. This soil is deep, nearly level, o1Ne gray gravelly sandy loam to a depth,of 60 nch s or �' � d a a9 ays.'The azeas ar�ePregu arsn shape of�0�9 �"ore. and narrow and mainly range from 5 to 25 acres. Slopes �ncluded with this soil in mapping are small areas of !�, are smooth, slightly concave, Wh�man soils in lower azeas and Scituate and : : The surtace has stones and and 50 to 400 feet �ong. Woodbridge on low knolls.Also included are areas ot diameter that are 5 to 100 feet apart � to 3 feet in Ridgebury soils with no stones on the surtace or with a � friable substratum. Included areas make up about 16 TYpically the surface layer is very dark brown fine Perceht of this unit. ; sandy loam about 9 inches thick. The subsoil is mottled � and is about 11 fnches thick: It is olive fine sandy loam The permeability of this Rid ebu in the u motlerately rapid in the subsoi�l and slow or very S pN,i� pper 5 inches and olive gray gravelty sandy loam the substratum;Available water ca ac' �, in the lower 6 inches. The substratum is firm, mottled,; � olive gray gravelly sandy loam to a depth of 60 inches a� m�nly ranges from very stron p � 151O1"'• Reaction more, but tfie surtace layer is slightly ac d in somelimed a eas. A seasonal high water table is at or near the surtace Inciuded with this soil in mapping are small areas of during late fall, in wfnter; and in spring. Whitman soils in lower areas and Scituate and Mas► areas of this soil are in woodland. q tew areas ` � Woodbridge on low knolls. qlso included are areas of Ridgebury soils with no stones on the surtace or with a are used for pasture. friable substratum. Included areas make u The stones and boulders on the surtace make this sai� ' percent of this unit. P about 5 P��Y suited to farming. The soil is suited to Vees, but the stones and boulders and wetness caused by the �; , The permeability of this Ridgebury soil is moderate to seasonal high water table limit the use of wp��and moderately rapid in the subsoil and slow or very slow in the substratum. A�ailable water ca aci eq��pment. The soil is suited to woodland and wetland _ mainly ranges from ve p �Y is low. Reaction W��d��fe �ab�� but wetness limits recreational ry strongly acid to medium acid, development. � , but the surtace layer is slightly acid in some limed areas. The seasonal high water table limits tNis soil as a site A seasonal high water table is at or near the surtace , during late fall, in winter, for dwellings, small commercial buildings, septic tank and in spring. absorption fields, and shallow excavations. The slow or Most areas of this soil are in woodland. q few areas Ve�'S1OW Permeability of the substratum is an added � � are used for pasture. limitation for septic tank absorption fields. The stones and boulders on the surtace make this soil � ` poorly suited to farmin . This unit is in capability subclass Vlls. � the stones and boulders and the'wetness ca sed bb he seasohal high water table timit the use of woodiandy �Rx-Rock outcrop-Holiis complex. This unit is on ndges and hills. It consists of areas of exppsed bedrock eQ��pment. The soil is suited to woodland and wetland and somewhat excessively drained, shallow, nea �wildlife habitat, but wetness limits recreational to steep Hollis soils. The areas are irregularly shaped i i development. �Y level IThe seasonal high water table limits this soil as a site and range from 10 to 50 acres. Slopes are 40 to 500 �abfor dweilings, small commercial buiidings, septic tank feet long and range from 3 to 35 percent. The areas ot sorpUo� fields, eXPosed bedrock are mainly less than 50 feet a art, �.y,ery S�oW and shallow excavations. The slow o� stones are on the surtace of some areas of the unit. The ��imitation forseeability o(the substratum is an added unit consists of about 65 percent exposed bedrock, 20 # This unit is inP apabi� absorption fields. Pe�cent Hollis soils, and 15 percent other soils. The soils � � ty subclass Vlls. and exposed rock are so interiningled that it was not practical to map them separately. �s i_,+ �� s , �� - _�� ' � � '� Essex Counry, Massachusetts, Southern Part 4� , � � � �� Typically, the Hollis soils have a surface layer of dark contamination. The sidewalls of excavations in this soil � � brown fine sandy loam about 3 inches thick. The subsoil are unstable, and the steeper sides commonly collapse. �� is dark yellowish brown fine sandy loam about 15 inches This unit is ire capability suticlass Vw. thick. Hard granite is at a depth of 18 inches. Included with this complex in mapping are small areas ScA—Scitico silt loam, 0 to 5 percent slopes. This i ' of well drained soils that have bedrock between depths soil is deep, nearly level and gently sloping, and poorly �, of 20 and 40 inches in some places and between depths drained. It is in depressions, along drainageways, and on of 2 and 8 inches in others. broad areas nea�tidal marshes. The areas are iriegular ! ; The permeability of the Hollis soils in this unit is in shape or long and narrow and mainly range from 5 to moderate or moderately rapid. Available water capacity 60 acres. Slopes are smooth and concave and are 50 to is very low. Reaction ranges from very strongly acid to 1,000 feet long. medium acid. The rooting zone extends to the bedrock. Typically, the surtace layer is very dark.grayish brown � ' Most areas of this unit are in woodland. The bedrock silt loam about S inches thick. The subsoil is firm silty � exposures and shallow depth to bedrock limit the unit for clay loam about 34 inches thick and is mottled most uses other than for esthetic value and some rypes throughout. The upper 8 inches is grayish brown, the l�1�.. of recreation. middle 8 inches is gray, and the lower 18 inches is �, This unit is in capability subclass Vllls. grayish brown.The substratum is firm, mottled, light olive ^ brown silty clay loam to a depth of 57 inches and firm, � Sb—Scarboro mucky loamy fine sand. This soil is olive silty clay from 57 inches to a depth of 70 inches or � deep, very poorly drained, and nearly Ievei. It is in more. > , depressions and along streams. Slopes range from 0 to Induded with this soil in mapping are small areas ot � 3 percent. The areas are long and narrow or irregular in Boxford soils on low knolis and Maybid soils in low , shape and range from 5 to 80 acres. Slopes are 50 to areas, Included areas make up about 15 percent of this r� ; 800 feet long. unit. 1'� ; Typically, the surface is covered by a 3-inch-thick layer The permeability of this SciUc,o soil is slow or very of black mucky peat. The surface layer is very dark slow. Available water capacity is high. Reaction ranges brown mucky loamy fine sand about e inches thick. The from strongly acid to neutral in the upper part of the 41 � subsurtace iayer is mottled, gray loamy sand about 5 subsoil and from medium acid to neutral in the Iowe�part inches thick. The substratum extends to a depth of 60 of the subsoil and in the substratum. A seasonal high " inches or more. It is grayish brown loamy sand to a water table is at or neaz the surtace in late fall, in winter; �i ` depth of 19 inches and stratified grayish brown gravelly and in spring. � coarse sand, light yellowish brown coarse sand, grayish Most areas of this soil are covered with grass or ere in � brown loamy sand, and grey fine sand from 19'inches to woodland. a depth of,60 inches or more. This soil is poorly suited to cultivated crops but is �� : Included with this soil in mapping are small areas of suited to hay and pasture. The seasonal high water table i ; Swansea, Walpole, and Wareham soils that make up is the main limitation for farming, and drainage is difficult about 15 percent of this unit. to establish because of the slow or very slow ; The permeability of this Scarboro soil is rapid or very permeability and a lack of outlets. The use of proper � > rapid. Available water capacity is moderate. Reaction is stocking rates, deferred and rotational grazing, and . ' '-: very strongly acid to medium acid. A high water table is restricted grazing when the soil is saturated are practices. ` at or near the surtace during most of the year. Many that help to maintain desirable pasture plant species. � ,:areas have water ponded on the surtace for short Wetness makes the soil poody suited to trees. The soif � t periods. is suitable for most types of wildlife habitat, but wetness' �- Most areas of this soil are in woodland. Some areas and slow ermeabili are limitations for recreational . �=:are in asture. P � P development. �, ; Wetness caused by the seasonal high water table The high water table limits the soil as a site for �,:makes this soil poory suited to farming. Drainage of the dwellings, small commercial buildings, shallow �`.-soil is difficult because ot the lack of adequate outlets. excavations, and septic tank absorption fields:The slow;. i`�`, The soil is poorly suited to trees. It is suited to wetland or very slow permeability is.an added limitation for septic. t'wildlife habitat, but the water on the surtace limits tank absorption fields. � 3 recreationai development. This unit is in capabiliiy subclass IVw. '� The water table limits this soil as a site for dwellings, f `�small commercial buildings, septic tank absorption fields, Sg6—Scituate fine sandy loam, 3 to 8 percent E�-ior shallow excavations. The rapid permeability provides a slopes. This soil is deep, gently sloping,and moderately "�'poor filter for septic tank absorption fields. Effluent well drained. It is mainl on the to s and lower slo es"of . s, Y P P �.;flowing,through the soil causes a hazard of ground-water hills. The areas are irregular in shape and range from 5 < �. #�., _ e:.: � �� : 41.. � , Essex County, Massachusetts, Southem Part r ; 131 � TABLE 10.--BUILDING SITF. �DEVELOPMENT--Continued Soil name and I Shallow � Dwellin s - I t map symbol I excavations I without I �withngs � Small i Local roads � Lawns and � � I �basements I commercial I anr7 streets I lanclsca in 1 basements I� Duildin s I I P g �Po3--------- I � � � � . ------IMoaerate: IMoaerate: � � I ' IPoquonock IModerate: IModerate: i I dense layer, I wetness. I wetness. IModerate: IModerate4 I wetness, I wetness. � � I wetness. � large stones. � � I slope. � . � �°�__""'__'___'- � IModerate: IModerate: � � � I- Poquonock IModerate: ISevere: � I dense layer, I wetness, I wetness, I slo e. IModerate: IModerate: R � � I wetness, � slope. I slope. � p I wetness, � large stones, I slope. � � I I slope. I slope. �°D---------------' � � I � I � Poquonock �Seiare: ISevere: ISevere: ISevere: ISevere: I P I slope. � slope. � gya e. ISevere: j �u� � � I I P I slope. I slope. �@uarries j � � i I � 3A, RlA, R1H----_iSevere: I � I I � � iRid ebur Isevere: Isevere: ISevere: ISevere: i 6 Y I wetness. I wetness. I wetnesa. I wetness. ISevere: �t: I j � ^ � I frostsaction. � wetness. I � � � i � ack outerop. � � I 1 I � 3ollis-----------f I � � I j ISevere:� ISevere: ISevere: ISevere: � I depth to rock,� depth to rock,I depth to rock,l depth to rock,ISdepth.to rock,lsslope, ' � alo e. . I P I s1oPe. I slope. I s1oPe. � slo e. a I � � I P I thin layer. ! �'"""--------ISevere: ISevere: I �;carboro � � � cutbanks cave, l ponding, ISeondin �Severe: �Severe: - p �- ( ponding. I pondin ISevere: I excess humus, I � � g, I po�ding, �� 1 ponding. � � � I froat action. I excess humus. I ,A_____-'_______'ISevere: I � � � � I , �Severe: �Severe: � :citico � wetness. � �Severe: �Severe: I wetness. I wetness. ISevere: � i . � I i wetness. I wetnescength, I wetness. �' � I j � � I frost action. 1 ! �g-'------------ISevere: IModerate: I I 1 � � cituate ISevere: IDtoderate: � I wetness. I wetness. IModerate: IModerate: ' � � wetness. � slo e, I � � P 1 Prost actlon, 1 wetness. . I wetness.- � I � � I wetness. � �'--------------ISeveret IModerate: ' � I ! 'cituate I wetness. ISevere: �Moderate: 1Moderate,: � I wetness. I wetness. IModerate: i � � � � � I wetness, I frost action, I small stones, � � I slope. � wetnesa. I � I lar e stones. �'--------------ISevere4 IModerate: � � I B pituate I wetness. ISevere: Isevere: IModerate: I wetness, � wetness. �Moderate: k � .� I slope. � wetness, I slope. � � - � slope� I i � I . � � � � I slope, � . � small stones, � I � � I rrost action�. I large stones. �'8--------------ISevere: �Moderate: - � I . � I �ituate - � �Severe: IModerate: I wetness. I wetness. IModerate: IMoelerate: � t � � � I wetness. � wetness, I frost aetion, I small stonea, i � � � I slope. I wetness. i large stones. � �----------- � � � I ----ISevere: ISevere: � ISevere: ISevere: cltuate � large stonea, I�-large etones. � wetness, ISeverei� ISevere: � - I wetness. � - I large stones. � large atones. � large stones. � S'� � � � .� i large stones.� 1 � � F"-------------ISevere: ISevere: I � � � , ISevere: ISevere: ISeverei � ISevere: ituate 1 ��large stones, � large stones. � wetness, I wetness. � I slope, I large stonea. � large stones. � I large stones. I large stones. I . � �( ,. SpB'-----'-'ISevere . ISevere: I I . I I �aker ISevere: ISevere: e � too clayey, � wetness. . �Severe: ISevere: :_ f wetness. I wetness. i wetness. I- � I I I wetnessength, I wetness. �r ____ � � - � , i . � frost action. � '_________ • }q �9bur ISevere� �Moderate: ISevere: IModerate: I � ,- i Y � wetness, I ,wetness. IModerate: ISlight. � - l wetness. I wetness. I wetness, � � cutbanks cave.� � . � I � � � i frost action. � �, See footnote at end of ta�1e. ' si . '� ;�l : �:, _ � � E, �Fssex County, Massachusetts,Southern Part 137 . r � TABLE 11.--SANI?ARY FACILITIES--Continssed . � I � � Soil name and � Septic tank � Sewage lagoon � Treneh 1 Area � I Daily cover . � map symDol . i abfieldson i �areas � � sanitary � sanitary I for landYill � � I landfill I landfilL I � 1 I I I I PcE�: I I � � � r.[ Montauk----------ISevere: �Severe: - 1 I � peres slowl ��evere: �Severe: �Poor: y, I slope. I slope. I slope, I seepage, islope. i I I seepage. i slope. ' �edC�: I I I I I � � Paxton---------_�Severe: Isevere: IModerate: IModerate: IFair: - i peres slowly. i slope. �� wetness, � wetness, I slope, � slope. I slope. � small stones, / � � I I I wetness. �� ; Urb,an land. i - i � �- � I I I e----------------�Severe: ISevere: �Severe: ISevere: �Poor: � , Pipeatone � wetness, I wetness, . � wetness, I wetness, � too sandy, - I poor filter. I seepage. I' seepage, I seepage. I seepage� � � � I I i too sandy. i � i wetness. � Pc*. � I I� 1 I ' Pits ' � I I I I � rP1B----------------ISevere: �Severe: . �Slight----------�Severe: IGood. i Pollwc � I peres slowly. I seepage. I � I seepage. � � I 1 I I I PoB-----------------�Severe: �Moderate: IModerate: IModerate: IFair: Poquonock I peres slowly. I slope. 1 wetness. � wetnesa. � small stones, � F i . ,I' i . . � i i wetness. ' 4PoC----------------�Severe: , �Severe: �Moderate: �Moderate: �Fair: � Poquonock I peres slowly. I slope. . � I slope, I wetness, �. small stones, . I I - 1 wetness. I slope. I slope, - ' � � 'I � I I wetness. � �POD-----------------ISevere: �Severe: ISeverer. . ISevene: . IPaor: Poquonock � slope, � slope. � slope. � slope. � slope. I peres slowly. I - � � � i !au*. I � � � I I I I I � '. Quarries I � 1 I I I I RdA, R1A------------1Severe: . �Slight-----------ISevere: �Severe: IPoor: �� Ridgebury . ' I perca slowly, I I wetness. I wetness. �I wetness. ` � � � 1 wetness. I I � 1 I I 1 I RiB-----------------�Severe: �t4oderate: Isevere: Isevere: IPoor: � Ridgebur9 I peres slowl9> I slope. I wetness. � wetness. I wetness. I wetnesa. � � � � I I I I I I Rx�: � - ! Rock outcrop. � I I � � I I I I • I ; Hollls-------------ISevere: ISevere: � 1Severe: Isevere: IPoor: � f , I depth to rock, I seepage, I depth-to rock, I depth�to rock, I area reclaim, . i � slope. I depth to rock, I seepage, � seepage, I thin layer, I I slope. I slope. I slope. I slope. I 1 , I I I . �'Sb------------------�Severe: � ISevere: �Severe: - :' � Scarboro . ISevere: IPoor: I ponding,. I seepage, I seepage, I seepage, . � seepage, j,l ,�'t - , � �� poor filter. � I excess humus, I po�ding, � ponding. � � too sandy, � i . i pond7,ng. i too sandy. i i.ponding. �ScA---=-------------Isevere: ISlight-----------Isevere: Isevere: �.. IPoor: y t� Scitico � I wetness, I I wetness, I wetness.� I too clayey, � ;I..t � peres slowly. I � I too clayey. � � hard to�pack, � I I I I I wetness. i I I I I � ` See footnote at end of table. � � � �'.� �� , r � 'Essex County, Massachusetts, Southem Part . � � _ 143 { � - TABLE 12.--CONSTRUCTION MATERIALS--Continued , �I. �t � Soil name and � Roadfill � Sand map symbol �� i Gravel � � Topsoil i � � 1 i i I i ,; �` ! °E'° � i i i f Paxton-------------�poor: � . Ilmprobable: Ilmprobable: �Poor:- �( i slope. i excess fines. I excess fines. I slope, I s � � ; � i large stones. Montauk--------------�poor: IIm roDable: P Ilmprobable: �Poor: � f i slope. I exeess flnes. I excess Fines. I slope, - � small stones. d°'° � I I I ',Paxton___'__"___'_'_IGood_______'—_ ' I _ ------�Improbable: �Improbable: �Fair: � excess fines. � exeess fines. � slope, � i � � i � � I small stones, �,i � � ' i I area reclaim. Orban land. i i ' I I � ie'__"'__"'_'_____'_IPoor: � I I i !P1 estone IProbable------------��probable: IPbor: P - I wetneas. I . � too sandy• l wetneae. � � , I ' � I I ( fLits i i I I � i1B-------------------�paip: IImprobable: � � � - �Improbable: �Fair: Pollux ' I low stren th. � excess fines. � excess fines. I small stones. � . 8 oB POC--------------�Goo3---------------�Im robable: I � I � � �?oquonock � � p I?�probable: INair: � i ezcess fines. i ezcess flnes. I area reclaim� � " � I too sandy, � � I i 1 large- stones. I � °D-------------------IFaiv: IIm robable: I Poquonock � I slo e. P IlmproDable: �Poor: i I P i excess flnes. . i excess flnea. ^I slope. � � u�. � Quarries � � I I FdA, R1A, R1B--------�Poor: - Ilmprobable: limprobable: � IPoor: � �Ridgebury i wetness. i excess Pines. � excess fines. I wetness, � . ' I I small stones, , � I�x#. . I . I . I i area reclaim. ERock outcrop. � �� - � �'Hollis--------------IPoor: �Improbable: Ilmprobable: �Poor: I area reelalm, .� exceas fines, I excess fines, I area reclalm, . � t I slopelayer; i thin layer. i thin layer. i slope. , y_""_____'_""_"_jPoorc I I I �Scarboro IProbable-------------�Improbable: IPoor• � i Netness. i � too sandy. I too sandy, � � ' � i I ponding. E � I cA—""'—'---'--"---�Poor: �ZmProbable: �Scitleo - I low stren`th, limprobable: IPoor: . g 1 excess Pines. I excess fines. I wetness, iwetness. i i .I too clayey. ( � 9-----'-------'-- � : t �B ---IFair: . �Improbable: �Improbable: dBair: ScYtuate " i wetness. i excess fines. i excess fines. I small stones, I area reclaim. � I I I ,�hH, ShC, Sm5---------IFair: . Ilmprobable: IImprobable: �Poor: + �Scltuate i wetness. - i excess fines. � exceas fines. � I i small �stones. oB, SoC-------------�?air: �Improbable: . IImprobable: {Poor: �Scituate � large stones, I excess fines. I excess fines. I large stones, I wetness. I I I area reclaSm. �_I I I I I � See footnote at end� of table. � t 't 1.- � � � � � : _ �as soi�S�Ne„"+� �� TABLE 13•--WATEA MANAGEMENT--Continued � �� - . . - Limitations for-- - Features a££ectin -- � �Soil naine and - I - - � � � � - � FmDanlwents, ( ] map symbol I Pond reservolr l dikea, and � � � �? � � 1 areas I- leveea - - � Aquifer—fed I Drainage� , I �rassed ,� � - � excavated onds � I waterw s 3 ' � I � PbC, PbD----------�Severe: � I I � � Isevere: �Severe: IDeep to water----Islope, j� � � -. Paxton i slope... i piping. I no water. I � rooting depth, ? �� I � I I i i Peres slowly ; PcSf: ' i Pazton----------ISevere: �Severe: ISevere: � �Deep to water---=l�Slope, S ! i ._ i aloPe' . i piping. I no water. I � ( rooting depth�� _ � - � . I I i i Perca slowly �� Montauk----------ISevere: �Severe: ISevere: - � I see a e, IDeep to water----ISlope, , P S I seepage, I no �ater. I I rooting aepth f � , , i slope. � . i piping. i i - . �I peres slowly. PdCt: � � Paato:i-----------�Severe: . ISevere: �Severe: �Deep to water----ISlope, �� - I slope. I piping. I no water. � I � �I peres slowly, - � � I I - I i � i rooting depth. , : I I I � Ucban land. � � � �. � . � � � � . . .. . Pe----------------�gevere: �Severe: ISevere: ICutbanks cave----IDroughty, I � Pipestone - I�seepage. I seepage, I cutbanka cave. I I wetnesa. � - 1 � I 1 PSP1�B, I I I I 1 wetness. I I I Pq'. i j I I I Pits ( ' I 1 I � I � f k P1B---------------�Moderate: . �Severe: ISevere: . �Deep to water----lErodes easlly, Pollux � 1 slope. I piping. I no water. I I perea slowly. � ' ; I I . I I � i POB---------------IModerate: �Moderate: . Severe: �- ---��- -IDeep to water----IRooting depth, Poquonock � slope. � piping. no water. � . � _. __ � ' I 1 ._ ' perca slowly: � PoC, POD----------�Severe: �Moderate: ISevere: ' t �Deep to water----ISlope, Poquonock I slope. I piping. - � no water. � � � � rooting depth,� � 4 .� . @u i ' I . i . i Perca alowly. •, Quarrles I j I I I I I RdA------------- g -----�Severe: Isevere: IPeres slowly, IWetnees, I , --IS11 ht------- f � Rldgebury .I 1 wetness, I no water. I frost action. I peres slowly, ii P1P1�6• i i 1 rooting depth. �� R1A---------------ISlight------------�Severe: �� ISevere: IPerca alowly, IWetness, Ridgebury I I plping, I no water. I froat action. I perca alowly, , I . i wetness. I I � rooti[tg depth. ' R1B------- --1:4oderate: '� - I � I - Isevere: ISevere: Islope, Iwetness, � r Ridgebury � slope. � piping, I no water. � 1 peres slowl � . y, peres slowly, � I � wetnesa. I I frost action. I rooting depth. 1 I I ' I 1 Rxa: I ' � Rock outcrop. � I I I I � � � � 1 I I I 5 Hollis----------�Severe: ISevere: ISevere: IDeep to water---ISlope, � f k I depth to rock, I thln layer, � no water. 1 I depth to rock. . � I slope. � piping. � � � � I I I I I Sb------------ ISevere: �Severe: ISevere: 'i '--- �Cutbflnks cave, IWetnesa, . i Scarporo - � seepage. 1 seepage, ( cutbanks cave. I frost action. � droughty. t. { . I 1 Ponding. � � � � � i I I 1 ScA-------------ISllgtlt------------�Severe: ISevere: - �Perca slowly, IWetness, �( Scltico 1 1 piping, I slow refill. I frost action. I peres alowly, 1 1 wetness. I - I I erodes easily. `t 1 I I I 1 1 , See footnote at end of table.� � � f tt - �� ' � ,' 156 Soil survey il � TABLE 14.--ENGINEERIN6 INDER PROPERTIES--Contlrmed� Classificatlon Frag- Pereentage passing Soll name and �Depth� USDA texture I � I�ents I sieve numDer-- ILiquid I Plas- � � map symbol I �I 1 Unlfied I AASHTO I > 3� I I 11mit � ticity i I :. I � I �inchesl 4 I 10 � 40 I 200 I I index '� � n Pet � � Pet I I I I I I I I I 1 I RdA-------------I-0-9 INine sandy loam �SM, M1II� IA-1, A-2,� 0-5 �80-1001T5-90 I�0-90 120-70 �1 --- I NP i 1 Ridgebury I i I I A-4 I 1 I 1 I 1 1 � � I 9-ZOlsandy;loam, " (SM, hII. IA-1, A-2,1 0-15 165-95 155-90 Iu0-80-120-60 I -- I NP �' 1 I gravelly loam. I I A-4 . I I � I I I I ___ I �20-6o�Sanay 1oam, IsM, ML In-1, n-2,1 0-15 165-95 155-90 135-BO F2o-6o i I Ne � � 1 I gravelly loam. i I A-4 I I I I I I I t , I I I i I I I � 1 I I �� R1A, A1B---------I 0-9 IExtremely. stony ISM, PII. IA-2, A-q I 5-20 170-100160-90� 145-85 125-65 I ---- I NP ' Ridgebury I 1 Yine sandy loam.l I -I I � I i I I I � I 9-zolsanay ioam, ISM, Hu. Ia-1, n-2,1 0-15 165-95 155-9�0 140-8o Izo-6o i --- t NP � I I gravelly loam. I I A-4 I I I I 1 I 1 �20-601Sandy loam, 1�1, DII, IA-1, A-2,1 0-15 165-95 155-90 135-80 120-60 1 --- I NP . � ! I I gravelly loam. � I A-4 � 1 I I I I I I I i I I I I I I I I 3�.xzf: I I I I I I I I I I I Rock outcrop. I I I I I I I- I I. I 1 � { I I 1 1 I I I I I I I i � xoiiss----------I o-z �Sxtremely atony Ishf, ou. Id-z, n-4 Iio-25 175-ioo165-95 140-85 (z5-7o 1 <zo I NP-3 I I fine sandy loam.l I I I I I I 1 I I 2-1511+ine sanay loam, ISM, rII. IA-2, A-4 I 0-15 175-95 165-95 140-80 I20-65 I --- I NY , I I sandy loam, I I I I I I I I I t' I I gravell loam. 1 I I I I I I I I � I I 15 IUnweatherea � -- � --- I --- I --- I --- I --- I --- I --- I --- ` I 1 bedrock. I I I I 1 I I I i I I I I I I I I I 6 I , Sb___'__'_____"'� 3-0 IMucky peat"_"'_IPt ' � IA-6 1 ___ � ___ � __' � _" � "' � __' � "_ � � Scarboro I 0-6 IMucky loamy £ine ISM, SP-SM IA-I, A-2,I .0 ' �95-100185-100iH5-BS I 5-50 I --- I NP � - 1 I sand. I I A-3, A-41 I I , I I I I 1 8-131Loam9 sand, fine ISM, SP-SM (A-1, A-2,1. 0 195-100185-1001�5-80 I 5-35 I --- I NP � I I sand, sand. 1 I A-3 I I I 1 I I I �13-191Loamy sand, sand�,ISM, SP-SM,IA-1, A-2,1 0 195-1001T0-100134-60 I 2-35 I -- I NP I I coarse sand. 1 sP I A-3 I I - I I 1 I 1 � i �19-6015tratified loamy ISP, �SM, � IA-1, A-2,1 0 I70-100�35-100115-80 I 0-35 I -- I NP � � fine sand� to � SP-SM �� A-3 � I I . � � � � i � I I gravelly coarse I 1 I I I I I I I F 1 sand. I I. I 1 I 1 I I I ( ; I I I I I I I 1 I I I t sca--------------I o-8 Isiit loam--------IML, cr.-ra. �a-4, n-6,1 o I ioo 195-iool9o-iool7o-95 1 z5-6o I 5-z5 sc�t�co I I I I A-7 1 I I I I I I I 8-42151Tt loam, silty ICL, CL-ML IA-4, A-6,1 0 I 100 195-100190-1001T5-1001 25-50 I 5-Z5 I I cla9 loam, siltyl 1 A-7 1 I I I I I I ; I I clay. I I I I I I I I I t k 14z-6olsiity ciay ioam, IcL, cr.-tu. In-4, a-6,I o I ioo I95-iool9o-iool8o-iool z5-5o I 5-25 I I ailty clay, I I A-7 1 I I I I I 1 I I "clay. I I I I I I I I I I I 1 I � I I I I I I I � ! SgB--------------I 0-9 (Nlne sandy loam ISM, h4. IA-2, A-4,I 0-5 I80-95 170-90 140-85 I20-65 I <20 1 NP-4 i ;, Scltuate � � I � � A-1 � I � I � � � I 9-38IFine eandy loam, ISM, hII. IA-2, A-4, 1 0-15 170-95 160-90 135-85 120-65 I <20 I NP-4 � I i sandy loam, I 1 A-1 I 1 I I I I 1 I I loam. I I I I I I I I I i 13g-601Loamy sand, ISM IA-1, A-2 I 0-10 165-85 I50-75 130-65 112-30 �I <15 I NP-2 ti I I gravelly loamy � I I I J I I I I I I flne sand, I I I I I I I 1 I I I gravelly loamy I I I 1 I I i I I I I coarse sana. I 1 I I 1 I I I I , i I I I I I I I I I I I i 'F See footnote at end of table. - � � '� � k ' i { i� � ; �° , . � � , '! Essex County, Massachusetts,Southern Part �61 ��! � . TABLE 15---PHYSICAL AND CHEMICAL PROPERTIES OF THE SOZLS--Continued Soil name and 1 Depth I Permeability I Available Erosion � � ma s bol I Soil reaction � Shrink-swell �� P � � � � i water capaeity i� i potential � - fac- t°� rs - I � • � A � T In In/hr Zn/in ' � �H - � - NnA, Nna---------� p-9 I 2.0-6.0 I o.13-0.25 I 4.5-6:0 - ILow-----------I 0.28 I 3 " j � Ninigret �� I 9-33 I 2.0-6.0 I 0.06-0.18 I 4.5-6.o ILow--------____� 0.32 I � ,� I 33-60 � 6.0-2o I o.oi-o.i3 I 4.5-6.o ILow-----_______� 0.10 � ras, rec, PaD--__j o-9 - I o.6-z.o I o.o8-o.z3 I 4.5-6.5 . ILow----________� I Paxton I g-23 1 0.6-2.0 � 0.o6-o.z0 I 4.5-6.5 . ILow------- � � 24 � 3 � I 23-60 � 0.2 � 0.01-0.12 � I U.5-Z•5 ILow-----------I 0.20 I IPbB, PbC, PbD"-'� 0'y I � � �._ . . I o.6-6.0 I o.08-0.23 �I 4.5-6.5 �Low----------__� I 3 Paxton I 4-23 I o.6-6.0 � 0,06-0.20 � 4.5-6.5 ILow------___ � 0.20 S � i 23-6o i <0.2 i 0.05-0.12 � 4.5-6.5 ILow----------- I 0.24 - j � � �PcE+; � � �� I I I � Paxton---------I o-4 I 0.6-6.0 I o.05-0.15 I 4.5-6.5 - ILow------------I 0.20 � -3 I 4-23 I 0.6-6.0 I O.o6-0.20' I 4.5-6,5 ILow----------__� 0.32 I I z3-6o I <0.2 I o.05-o.1z I 4.5-6.5 ILow------------I o.2q � '� Montauk--------I 0-2 I o.6-6.0 1 0.11-0.15„ � I 3-6-6.o ILow-----------j o.17 I 3 I � z-z2 I o.6-6.o I o.io-o.i6 � 3.6-6.0 . ILow-----------_� o.z4 I I 22-bo I 0.06-0.6 I o.02-0.16 � I 3.6-6.0 ILow--------___� p,z4 � � fPac•: i i i i � i i i ; Pazton----------� 0-9 I 0.6-2.o I 0.08-0.23 I 4.5-6.5 ILow-----------_I 0.24 I 3 � I 9-z3 I o.6-z,o . � 0.o6-o.zo I 4.5-6.5 ILow----------__� 0.32 I I z3-6o � <0.2 I o.05-0.12 I 4.5-6.5 ILow----------__I o.24 I i 4 vrban land. • � I I 1 I I I � °Pe-----'--'--"_� p-9 I 6.0-20 I o.07-0.10 I � '. P1 estone � �-5-7.3 ILow------------I 0.17 I 5 . P - I 9-29 I 6.0-2o I o.06-0.09 I 4.5-7.3 ILow--------__ , I 28-60 � >2o I o.05-0.07 1 5•1-y.3 li.ow------------j o.17 I f �Pg.. j � � I 1 I � l s rits I I I I � I I � � I � I , �P1B-----------"'I o-10 I 2.0-6.o I o.ii-a.i5 I 4.5-7.3 ILow------------I o.28 I . � �. Poliux I io-35 I 2.b-6.o I o.12-o.i5 � 4.5-6.o Ii.ow------- 3 � ( 1 35-60 � 0.06-0.6 I o.16-a 21 I 4.5-7.3 ILow------------I � 0.64 j 'PoB, PoC, PbD'-'-I ' � � I I 0-7 I 6.0-20 � 0.07-0.18 I 4.5-6.0 ILow------ - � -'I 0.17 I 3 r Poquonock I 7-2k I >6.0 I o.06-0.14 I U-5-6.o ILow-----------_� 0.17 I i C I zu-bo I <o.z I o.08-o.1z I 4.5-6.o iLow------------I o.z4 � f ,Qu, I I � � � � Buarrlea . I 1 I , � - . I I � � � f �iRaA--------------I o-9 I 0.6-6.0 �I O.o6-0.24 I 4.5-6.0 ILow------------I o.24 I 3 Ridgebury I 9-2o I o.6-6.0 � 0.04-0.20 I 4.5-6.0 �Low------------I 0.3Z I I zo-6o � <0.2 � o.oi-o.o5 I 4.5-6.a �Low------_____I o.zq I ,x1A, Rt B___'__"_� � I � I 0-9 I 0.6-2.0 I 0.02-a.24 � 4.1-6.0 _�Low-----------j 0.20 I 3 � �Ridgebury� I 9-ZO ( 0.6-6.0 � 0.04-0.20 I 4.5-6.0 �Low----------- I 0.32 I k i zo-bo i <0.2 I 0.01-0.05 I 4.5-6.0 �Low------------� 0.24 I �R"'' � � I � I I I � Rock outcrop. I I � � � - � � I � I..}Aollis-'--------� 0-2 1 0.2-6.o I 0.10-0.21 I 0.1-2.0 ILow-----------I 0.17 I 2 '. -I z-i5 I o.6-z.o � o.oz-o.i8 � o.i-z.o ILow-------___� 0.32 I I i r I --- I -- I -- I---------------� ---- I �o--------------I 3-0 . I 6.a-2o � I I I � � �.�Scarboro � p_g � - 0.20-0.45 I� 4.5-6.0 ILow------------I ---- I 5 �. I >6.o I o.o5-a.zo I 4.5-6.o ILow------------I o.i7 I I �8-13 I � >6.0 I � 0.04-0.13 I 4.5-6.o ILow---------_I o.17 � I 13-19 I >6.o I o,02-0.13 I 4.5-6.o ILow----------_� o.io I 'i . I 19-60 I >6.0 :I ' 0.01-0.13 i 4.5-6.0 iLow-----------I 0.10 � , k � � � I I is ' See £ootnote at end o£ table. . . � � ,� e '� 7 F.� ' � Essex Counry, Massachusetts,Southern Part 165 �; TABLE 16.--SOIL AND WATER FEATURES—Continued . . ' Floodin I Hi h water table I I Risk of corrosion P Soil name and � �Hydro-I IPotential��— � y map Symbol � logicl Frequency I lhiration �Months I Depth I Kind IMonths � frost �Oncoated IConcrete � Igroup_' I 1 1 � I I I action I steel � � w+: I - I I � I I I I I I � Ipsxich----------� D IFrequent----IVery brleflJan-Dec� +1-0 IApparentlJan-Decl --- INigh-----IHigh. + I I I I I I I I I I �Westbrook------ I D IPrequent----IVery brief�Jan-Decl +1-0 IApparentlJan-Dec� --- IHigh-----�High. I I I I I I I I I I �� a------------- - � D �None--------I -- I --- I +1-O.SIApparent�Oct-AuglHigh-----�H1gh-----IModerate. - Maybid I I I I I I I I I I I I I I I I I I I I � eA, MeB----------I C INone--------I -.- 1 --- I >6.0 � --- I --- IModerate IModerate IModerate. Melrose I I I I I I I I I I k�tmn Mma, runc, I` i 1 I I I I I I i � F �D--------------I A INone"----I --- 1 --' � I >6.o I --- I --- ILow'-"'-ILow-'--'IHigh. Merr3mac I 1 I I I I I I I I I I I I I I I I I I +inB�: I I I I I I I - I I I � � Merrlmac---------� A �None--------� --- � --- � >6.0 � --- I --- ILow------ILow------�High.� _ ' � I I i I I I I I I I Orban land. I I I I "I I I I I I i I I I I I I I I I �MoB, MoC, MsB, I I � I I I I I I I I ; MsC, MsD, taxC, I I I I I I I I I I � MxD--------------I C INone--------1 --- I --- IZ•0-2.SIPerched IFeD-MaylModerate ILow------IHigh. Montauk I I I I I I I I I . I I f 1 I I I I I I I �NnA, NnB----------� B INone=-------� --- I --- 11.5-3•�IApparentlNov-AprlModerate ILow------�High. � � Ninigret I 1 I I I I I I I I 1 I I � I I I I I I I PaB, PaC, PaD, I I I I I. I I I I I PbB, PbC, PbD----� '. C INone--------I -- I --- I1.5-2-51Perched IFeb-MarlModerate ILow------IModerate.. � Paxton - I I I I I I I I I I i ' , I ' I � I I I I I I I I I �PCEf: I � � � ' � � � � � � � Paxton-----------� C INone--------1 --- I --- 11.5-Z•51Perched IFeti-iQarlModerate �Low------IModerate. I I I 1 I I I I I I '+ Montauk----------I C INone--------I --- I --- � 12•0-2•SlPerehed �Feb-MaylModerate ILow------IHigh. . � �PdC�: I� I I I I I I 1 I I Paxton-----------I C 1None--------I -- I --- 11.5-2.51Perched IFeb-MarlModerate 1Low------IModerate. I 1 I I I i I I I I �� Urban land. I � � � � � � � � - � . � � i � � - � � � � � � � � [ �Pe---------------� A INone--------I --- I -- I0.5-1.5�Apparentl0ct-Jun�Moderate �Low------�Moderate. ' Pipestone I I I I I I I I I I ,pa■. ' I I I I I I I I I 1 I rits I I I I I I I I I i `.� I I - I I I I - I I I I ,P1B--------------� C INone--------I --- I --- I >6.0 I --- I --- IModerate ILow------IHigh. rollux I I I I I I I I I I I I I I I I I I I I I jPoH, PoC, PoD----I C INpne--------I --- I --- ILS-3•O�Perched IFeb-MarlLow------�Low------�High. `� Poquonock I I 1 . I I I I I I ' I 1 I I I I I I I I � I @ut. I I I I I I I I I I S Ruarries I I I I I I I I I I ! I I 1 I I I I 1 I I L�RdA, R1A, ffiB-----� C INone--------I --- I --- I 0-L 51Perched INov-MaylHigh-----�High-----IHigh. � xidgebur9 " I I I I I I I I I I I I I I I I I I I I �xx+: I I I ' I I . I I I I I Rock outcrop. • - I � � I � � � � � � ' � � L_� I 1 I I I I I I I I xouis-----=-----I C/D. INone--------I --- I --- I >6.o I --- I --- IModerate ILow------IHigh. _______I I I I I I I I I I iSb-------- � I D INone--------I --- I --- I +1-1.OIApparentlJan-DeclHigh-----�High-----IHigh. 7 Searboro I I I ' I I I I I I I I.,t I I I I I I I I I I See footnote at end of table. ,� , , : � i , �� Essex Cqunty, Massachusetts, Southern Part q� I I � i � Most areas of this unit are used for roads, highways, deferred and rotational grazing, and restricted grazing I ( ! schools, and athletic fields. Most areas have structures when the soil is wet help to maintain desirable pasture I ' on the level part and plants on the slopes. plant species. The characteristics and properties of this unit are The soil is suited to trees and to openland and . � variable, and onsite investigation is needed to determine woodland wildlife habitat Wetness caused by the water the limitations and suitabilities for any use. tab�e limits the use of woodland equipment or the use of I This unit is not assigned to a capability subclass. the soil for recreational development. r J��,,Ur—Urban land.7his unR consists of neady level to The water table limits the soil'as a site for dwellings, moderately steep areas where the soils have been small commercial buildings, septic tank absorption fields, and shallow excavations. The rapidly permeable altered or obscured by urban works and sVuctures. substratum provides a poor filter for septic tank 1 Buildings, industrial areas, paved areas, and railroad absorption fields; effluent flowing through the substratum r yards cover more than 75 percent of the surface. The i , causes a hazard of ground-water contamination. The ' areas are irregular in shape and range mainly from 10 to sidewalis of excavations in this soil are unstable, and the 1,000 acres. Slopes are smooth, rolling, or irregular and steeper sides commonly collapse. � � are about 100 to 1,000 feet in length. This unit is in capability subclass Illw. ; . Included with this unit in mapping are many small areas of Udorthents, smoothed. Also included are small � yyaB—Waipole fine sandy loam, 3 to 8 percent areas of Freetown,Hollis, Maybid, Scarboro, Swansea, slopes.This soil is deep, gentty sloping, and poorly Whately Variant, and Whitman soils and Rock outcrop. drained. It is in long and narrow and irregularly shaped f Included areas make up about 20 percent of the unit. areas near streams. The areas range from 5 to 40 acres. The properties and characteristics of this unit are so Slopes are 50 to 600 feet long. variable that onsite investigation is needed to determjne Typically, the surface layer is very dark brown fine . , � the limitations and suitabilities for any use. sandy loam about 8 inches thick. The subsoil is mottled � This unit is not assigned to a capability subclass. and is about 13 inches thick. The upper 4 inches is r WaA—Walpole fine sandy loam, 0 to 3 percent 9rayish brown fine sandy loam, and the lower 9.inches is ;� � slopes.This soil is deep, nearly level, and poorly light olive gray sandy loam. The substratum is mo8led F drained. It is in low areas and depressions near streams. and extends to a depth of 60 inches or more. It is olive � The areas range from 5 to 90 acres. Slopes are smooth strat�ed sand, gravel, and gravelly sand. • and concave and are 700 to 800 feet long. Included with this soii in mapping are areas of Typically, the surtace layer is very dark brown fine Scarboro soils in low areas and Ninigret and Sudbury � � sandy loam about 9 inches thick. The subsoil is mottled soils on low knolis. Also included are some areas tfiat and is about 13 inches thick. The upper 4 inches is have a substratum of silt loam. Included areas make up �`�� grayish brown fine sandy loam, and the lower 9 inches is about 15 percent of this unit. ;,� �1ight olive gr�y sandy loam. The substratum is mottled The permeability of this Walpole soil is moderately <,:and extends to a depth of 60 inches or more. It is olive rapid in the subsoil and rapid to very rapid in the i stratified sand, gravel, and gravelly sand. substratum. Available water capaciiy is moderate. . � � : Included with this soil in mapping are areas of Reaction ranges from very sVongly acid to medium acid. i:Scarboro soils in low areas and Ninigret and Sudbury A seasonal high water table is'at or near the surtace in ;;soils on low knolls. Also included are areas that have a late fall, in winter, and in spring. r`:substratum of silt loam. Included areas make up about Most areas of this soil are in woodland. Some areas �15 percent of this unit have been drained and are farmed. A few areas are` ; - The permeability of this Walpole soil is moderately used for homesites. �x:�apid in the subsoil and rapid to very rapid in the This soil is suited to farming. The seasonal high water g`substratum. Available water capacity is moderate. table keeps this soil wet in spring and delays farming ��`�Reaction ranges from very strongly acid to medium acid. operations. The major management needs are � � �A seasonal high water table is at or near the surface in installation of drainage where suitable outlets can be �'late fall, in winter, and in spring. located, increasing organic matter confenf, and �;_:,Most areas of this soil are in woodland. A few areas improving tilth. The use of proper stocking rates, are farmed, and a few are used for homesites. deferred and rotational grazing, and restricted grazing ��;:This soil is suited to farming. The seasonal high water when the soil is wet help to maintain desirable pasture j��:table keeps this soil wet in spring and delays farming plant species. '. �==operations. The major management needs are The soil is suited to trees and to wildlife habitat. �:installation of drainage where suitable outlets can be Wetness caused by the water table restricts the use of ,�located, increasing organic matter content, and woodland equipment and limits the soil for recreational !mproving tilth. The use of proper stocking rates, development. g= ;�,,; �:;. ��;,. ' i� � 'i 132 ' Soil survey`: � r� � TABLE 10.--BUILDING SITE DEVELOPMENT--Continued '� Soil name and 1 Shallow I � Dweliings - � Dwellings � I Small � � Local roada I Lawns and ` map symbol � excavatibns � mlthout I with I and atreets � � � , � commercial f i landscaping %� ` I basements I basements buildin s ' � � � . I . I ( �;a SrB---------------�Severe: �Moderate: ISevere: IModerate: ISlight. x� Sudbury I wetness, i wetness. � wetness. IModerate: � {- - I slope, � wetnesa, - � � I cutbanka cave.l I I wetness. I frost action. �. � ss----------------I � I I I � � t ISevere ,_ �SevPre: ISevere: ISevere: _ -� Swansea I xetneae, . I wetness, I wetnesa. I wetnesa, ISevere: ISevere: � I wetness . � wetness,� si� � � � exceas hamus, � low strength. I � low atrength. � low strength, I excesa humus.�„3 i � I cutbanks cave.l I I I froat action. I " ;t UpC. � � � � �- I �� Udlpsa�mnenta 1 I I I I ' � `1 ' UD. i I i i � i � � Udorthents � �� I I , �r#� � I � I I I Urban land i I I I I � � � � � � � { t WaA, WaH----------�Severe: �Severe: ISevere: ISevere: ISevere: ISevere: ' Walpole I cutbanka cave,l wetness. - i wetnesa. i wetness. I wetness, � wetness. I wetaesa. � � �� ,r � I � � ' I I frost action. � � �� f " We----------------Isevere• Isevere: ISevere: � � �� I j , Wareham I wetness, ISevere: . ISevere: �Severe: � � I wetnesa. I rretness. 1 wetness. i wetness. i wetnesa. i I cutbanks cave.i I � � � I � Wf----------------�Severe: ISevere: ISevere: �Severe: �Severe: �Severe: � i Whately Variant I wetneas. - � wetness. I rretness. I wetneas. � wetness� I wetness. i I 1 j � � - I frost action. I ym'___'_'_________�Severe: � I I ISevere: �Severe: 13evere: Nmitman - I ponding. � pondin ISevere: ISevere: � g. i pondlr�. i ponaing. � frost action, 1 large atones, � i � I I � - I Pondin�. I ponding. . � wnA__'_____'_'_"I Severe: I Sll t__"'____ � . I I Windsor � ISlight---------iSlight---------iSlight---------�Moderate: , . I cutbanks cave.l I I droughty. ; � W n H___'_"'_"__'_�Severe: �511 ht__'_'_'_'I I I I Windsor g ISlight---------�Moderate: �Slight---------IModerate: � - � : i cutbanke cave.i i 1 slope. I I droughty. WnC---------------�Severe:� IModerate: IM1foderate: ISevere: IModerate: ' Windsor IModerate: � i cutbanks cave. l alope. I slope. i slope. i slope. � � slope, � � , � i i . � dCoughty. ' WnD_______________�Severe: Isevere: Isevere• I I � ISevere: ISevere: � windaor 1 elope, - I elope. I slope. � slo e. ISevere: I cutbanks cave.l � � P �� i alope. I alope. � � WrB---------------j5evere: IModerate: �Severe: I � � IModerate: �Moderate: Woodbridge i wetness. I wetness. �Severe: I i i wetness. i-- slope, I froat action. 1 wetness. . I rretnesa. � I � �dre_______________ISevere: IModerate: � � � � ISevere: ISevere: ISevere: ' j� WoodDridge � I wetness. - I slope, I wetness. IModerate: I �� i slope. i frost action. 1 slope, � ' i wetness. I � I wetnesa. lis9__'____'___"__ISevere: . � I I I t IModerate: ISevere: IModerate: Isevere• � : Wooabridge � wetness. I wetnesa. � wetness. I slo e, IModerate: ' P I frost action. � lar e stones, tl � i I i wetness. . g I I wetness. WsC---___________�Severe: IModerate: jsevere• � � � � ISevere: �Severe: � WoodbMdge I wetness. - I slo e, � IModerate: P I wetness. I slope. . � frost action. I slo e, � �� - i : . ; wetness. I � I I I large stones, � f I I I I wetness. WaD---------------I � � I I I �Severe: �Severe: �Severe: ; Woodbrid e �Severe: ISevere: �Severe: , ; � i wetnesa. �I alope. I wetness. i slope. I slope, I slope. I I I frost actlon. I ' � See description of the map unit�for compoeition and behavlor characteMstica of the map unit. ' ES '� LF ' _.�:. � ,:, � � � � � �� t38 , . Soil surve �� C TABLE 11.--SANITARY FACILITIES--Continued . . � . . ' . . . . . : , ._: Soll name and I Septic tank � Sewage� lagOon I Trench� � � Area I Daily� cover � � 1 � map symbol I absorption� I areas I eanitary .I sanitary � I for landflll � I Pields . I . y . I. landfill I landf111 I ' SgB, ShB------------Isevere: ISevere: Isevereb � I I �� Severe: �Fair: ( T -� Scltuate � peres slowly, I seepage. I wetnesa. I aee a �e. �� .. p g � amall atones ��j � i wetness. i i i - i wetness, ��z� ShC------- . r" ---------Isevere: ISevere: Isevere: ISevere: � IFair: � Scituate I peres slowly, I slope, I wetness. I seepage. I��small.stones T � � � I wetnesa. I aee a e. I � I . � `�- ; I ' P 6 I I _ I wetness. � SmS-----------------�Severe: �Severe: 1Severe: ISev,ere: �Fair: � Scltuate � peres alowly, I seepage. � wetnesa. I aeepage. I small stones �,. 7 I wetnesa. 1 I - I I wetness. ' (( I . I I I 1 � SOB-----------------ISevere: � ISevere: ISevere: ISevere: IPoor: �. Scltuate � peres slowly, � seepage, I wetness, � seepage. I large stones I Hetness. � large stones. I large stonea. I I � --------I I I I I ,s SoC--------' - ISevere• '.i:; ! Isevere: Isevere: . ISevere: �Poor: Scltuate I perce slowly, I seepage, I wetnesa, I seepage. I large stones. � � I wetnesa.- � alope, 1 large stones. � � - I I wetness. 1 I I -��: SpA-----------------�Severe: �Sllght----------�Severe: ISevere: IPoor: �"-� � Shaker � wetness, I I wetness, � wetness, I too clayey, " ' I perca �slowly• I I too clayey. I aeepage. I wetness, � � - � � � � hard to pack. ,. � � � � � � ' , .- t f SpH-----------------ISevere: IModerate: �Severe: ISevere: IPoor: � I Shaker � wetness, � slope. �� wetneas, � wetnesa, � too clayey, : 1 perce slowly. ( I too clayey. 1 seepage.� � wetnese, � � '` � � � � � � I I hard to pack. I f I 1 I SrA, SrH------------�Severe: ISevere: . ISevere: ISevere: IPoor: tSudbury � wetneas, � wetrieae, � wetnesa, � rretness, I seepage, I poor .filter. 1 seepage. I seepagey � � seepage. I too sandy, ' � - 1 I I too sandy. � � small stones. ______I 1 I I I ' i Ss----------- �Severe: �Severe: ISevere: ISevere: Ipoor: � t Swansea I wetnesa, � wetness, � wetnesa, I rretness, � wetness, � I poor filter. I excese humus, I too sandy, I seepage. �- excess humus, I i seepage. i seepage. i i seepage. ' oac. I I I I I � � Udipsa�ents I - I I I I UD. I ' I ' � ' I I I I Udorthents 1 I � � � 1 I I I I � i � Ur*. I 1 1 I 1 Urban land I I , I I I � I I I I ; WaA, Wa9------------�Severe: Isevere: � Isevere: Isevere: IPoor: ( F Walpole � wetness, �� seepage, I seepage, I aeepage, � seepage, 1 � � poor fllter. � wetness. I wetness, I rretnesa. � too sandy, I I i too sandy. � � wetness. I I I I I P �We------------------ISevere: �Severe: ISevere: Isevere: IPoor: � � Wareham I wetness, � seepage, I seepage, I seepage, I seepage, i � poor filter. I wetness. � wetnesa, I wetness. I too sandy, � i � j i too sandy. ; i small stones.� 1 W£-----------------Isevere: ISevere: ISevere: �Severe: IPoor: , � Whately Varlant I wetneae, I wetness. � � wetnese, � wetness. � too clayey, r �. . ; Peres slowly. ' ----I too clayey. i i wetness. Wh------------------�Severe: �Slight------- ISevere: 15evere: IPaor: '� � Whltman I peres slowly, I I ponding. I ponding. � ponding. � ponding. � � . ! k I I I I I , , See footnote at end oP table. r l � ,. i � , r_� ,_�. � 144 ' � - . . . Soil survey... � �" � TABLE 12.--CONSTRUCTION MATSRIAL3--Continued ia i � Soll name'and � I Rd$dfill � Sand I Gravel I Topsoll w� map symbol I � i i � � � � 't ..SpA, SPB__"_"____' IPoor• I I I � �, i � Shaker - -' IlmproDaDle: IImprobable: � Ipoor: ; t I lovr strength, I excesa Pines. I excess fines. I wetness. ^ . I wetness. I I ' I �=: SrA, SrB-___�_____'_�Pair: I � � .. '� � IProbable------------IProDable------------IPoor: ` Sudbur { �� Y � i wetneae. i - i I small stones,� ,�- �� too sandy, � � � i i � I area reclaSm. Sa--------------------�poor: IProbable-------------�1mprobable: IPoor: � �� 4 ( 3wanaea I wetnesa. I I excess flnes. � � wetness, i : � i I I excess humus. � � UAC. � � Udipsammenta i ; � � 1 � � UD. I I I � � Udorthenta ' I I i � ' � . Ur*. I I i 1 '(� Urban land � � ' Waq, WaB----------- IPoor: � � Wal ole IProbaDle-------------IProbable-------------IPoor: . i 11 P � I wetness_. i i I wetness, ! � I small stones. J , We'____'_'__""_'_'_'IPoor: � ' � . I I Wareham- IProbable-------------IProbable---------____�poor: � wetness. � � wetness, . I i 1 � too sandy, I I i . i area raclalm. � f Wf------------------�poor: Ilmprobable: IImprobable: IPoor:� � Whately Varlant � I low strength, �� excess fines. � ezeess fines. I too clayey, ,, I wetneas. 1 I . I wetness. � '^h--------------------IPoor: �Im robable: I I Whitman P IlmproDable: Ipoor: � j , i ivetness. i excess fines. � excess fines. � wetness, II � ' I I large stones, �� ,, � ' . i . I area reclaim. WnA, 17nB, WnC---------�Good-----------------IProbable-------------Il�probable: . IPoor• f � Windsor I I I ezcess finea. I too sandy. WnD__�_'_____"'_ ' . I 1 I . ----�Fair: IProbable------------=lImprobable: �Poor: . Winasor i slope. � i " I excess £ines. � slope, . � � I i i too sandy. ` WrH-------------------�poor: IImprobable: IImproSable: IFair: Woodbridge i frost action. i excesa fines. . I excess fines. I small stones, I I � i area reclaim. � 7 WrC'________'_"___'_'�Poor• . ' Woodbrid e � �1mprobable: IImprobable: IFair: 6 i Proat aetion. i excess fines. I excesa fines. I slope, I ' I I small stones, P � . I i area reclaim. 7 � WsB, WsC_""__'_'_'__IFair: I . k. , Ilmprobable: Ilmprobable: �Poor: WoodDridge i wetness: i excess fines. � excess fines. � large stones. ? WSD-------------------�poor: �Improbable: �Improbable: �Poor: ' Woodbridge I slope, � excess Yines. � excess Pines. I slope, (.j�. �I wetness. � i _ . I i large stoaes. • See deaeription of the map unit for compo5ltlon and behavior characteristics oP the map unit. ld 1F � 1 'i Lf , r-� I �ssex Couniy, Massachusetts, Southern Part 149 I I � � � TADLE 13•--WATER MANAGEMENT--Contifiued I�I � Limitations for-- Peatures afPectin - Soil name and I EmDanlanents, � - �� (-� map symbol I Pond reservoir l dlkes, and I. Aqulfer-�ed i Drainage I Grassed i I I I areas I leveea I excavated onas I . I waterwa s � � �9, ShB----------ISevere: IModerate: � �Severe: IPeres slowly, IRooting depth, ��I (�ituate . i seepage. � i piping. I no water. I slope. I perca slowly. I ---------ISevere: IModerate: �Severe: IPeres slowly, jSlo e, cltuate � seepage, ' � piping. � no water. I slo e. P � � slope. � � I P i rooting depth, ( 1 . � I ' I I peres slowly. I �' �3--------------ISevere: IModerate: �ituate � ISevere: IPeres slowly, IRooting depth, = , � i aeepage. i piping. I no water. I slope. I perca slowly. -------------1Severe: Isevere: ISevere: IPeres slowly, ILarge atonee, f l:ituate I see a e. � lar e stones, i P 6 B � no water. � large stones, � rooting depth, f � I -I wetness. � � I i $loPe- i Peres slowly. "---------------ISevere: ISevere: cltuate lSevere: �Peres slowly, �Large� stones, � � I seepage, I large stones, I nb water. I large stones, I slope, ( + i slope. i Hetness. � i i slope. i rooting depth. �1---------------ISlight------------ISevere� ISegere: . ., IPeres slowly, IWetness, aker I - I wetness. f no water. I frost action. I peres slowly, : I I I i . i erodes easily. �', �3---------------IModerate: ISevere: ISevere: IPeres slowly, IWetnese, ��aker . I slope. I wetness. I no water. I frost actlon, I peres slowly, I � I � � I slope. I erodea easlly. �' I1---------------ISevere: �ISevere: ISevere: - ICutbanks cave----' � 'idbur � - iFavorable. ; Y I seepage. I seepage, I cutDanks cave. I ' I � wetness. � 1 1 I I I ---------------ISevere: ISevere: ISevere: ISlope, IFavoraDle. ( jldbury � seepage. � seepage, � cutDanks cave. I cutbanks cave. � i I - I wetness. I � � I � I I I I I .: � i - ------------ISevere: ISevere: Isevere: 'ICutbanks cave, IWetness. � ansea I seepage. � seepage, � cutbarilcs cave. � frost action. I ' +:' i � i wetness. i I I �� I I ' i I j dipsamments � - � I I I `. I I I I � ! ;iorthents I I � � I - � I I � �* I I I I I fban land I � I I � I � I i W� ��--------------ISevere: ISevere: �Severe: Ilprost action, IWetness. �I dlpole � seepage. I seepage, I cuttanks cave. � cutbanks cave: I ' I i wetness. i I I I !�---------------�Severe: �Severe: �Severe: ISlope, IWetness. � � �ilpole I seepage. I seepage, I cuthanks cave. I frost action, I I I wetness. . 1 I cutbanks cave. I 1' I I I I I ----------------ISevere: �Severe: ISevere: . F - ICutbanks cave----IWetness, �reham 1 seepage: � aeepage, I cutbanks cave. I I droughty. t ! I � I wetness. I I � � I I I I I I � -------------ISllght----------=-ISevere: ISevere: IPeres slowly, IWetness, ately Variant � � � wetness. � slow reY111. � frost aetlon. � peres slowly. _ � � . � � . � . � �I�,. ��' ! -----------IS11 t------------ISevere: ISevere� �� • Iperes slowl9, ILarge stones, `vfiltman � � � piping, � � no water. �I frost action. I wetness, - ' ii ponding. i i i peres slowly. I� �� ( See footnote at end of table. '! i l ! '� � 1 ' r � I ,�Essex County, Massachusetts,SoutFiern Part � is� I .1 TAHLE 14.--EN6INEERING INDEX PROPERTIES--Continued ClassiPication Frag- Percentage passing � .�So11 name and IDepthl USDA texture � I � � Iments I sieve number-- �Liquld I Plas- � i map symbol I I - � Unified � AASHTO I > 3 I I limit. � ticity I � �I . I linchesl 4 1 10 40 1 200 1 I indez � ?� I 1 Pct I I I Pct I I I I i I I I I 1 1 I � �iciShC------�-� 0-5 IVery etony fine ISM, M[, IA-2, A-4, 110-20 I7o-90 160-BS 135-80 120-65 I <20 . 1 NP-4 tuate 1 I sanay loam. � � A-1 I I I I I I � � I 5-381Fine sandy loam,� ISM, ML �A-2, A-4, 1 0-15 I70-95 160-90 I35-85 120-65 I <20 � NP-4 , I I loam, sandy I I A-1 I I 1 I i I 1 I I 1oam. I I 1 I I I I t I � � 138-601Loart�v sand, �SM �A-1, A-2 I 0-10 165-85 ISo-75 130-25 112-30 I <15 I NP-2 � � 1 I gravelly loamy I I I 1 I I I I I � I I PSne sand, I � gravelly loamy I � � � � � � � � '' I I coarse sand. � I I � I 1- I I I I I 1 I I I I I I I i �nB--------------I 0-5 IExtremely stony ISht, Fff. IA-2, A-4,115-35 160-90 155-85 135-80 120-65 I <20 I NP-4 � �icltuate I I fine sandy loas.l 1 A-1 � 1 I I t I I I 5-381Pine sandy loam, ISM, M1II. IA-2, A-4.,.1 0-15 I70-95 160-90 135-85 120-65 I <20 I NP-4 ,� I I loam, sand9 I I A-1 , I I I I I I I I I loam. I I I I I I . I I I � � . 138-6olLoamy sana, - � �saf �p-1, a-z I o-io �65-85 I50-75 130-65 liz-3o I a 5 I NP-2 � � 1 1 grave119 loa'qy � � I I I I I I I � I I fine sand, a49 , , I I gravelly loamy I I I I. I I I 1 I i I I coarse sana. I I I I I I I I I j ' 1 I I 1 I I I I I I I t,s, soc------,--I o-5 IExtremely IsM, �u. In-i, a-z,l3o-50 160-95 145-90 130-85 Ii5-7o I �<zo I. NP-4 � ,§eituate 1 I bouldery £ine I - I A-4 I I� I I I I I I I sandy loam. I 1 I I I I I I I � � I 5-381Fine sanay loam, �ISM, tu. IA-1 A-2, 1 0-15 I70-95 160-90� 135-85 I2o-65 I <20 ( NP-4 I I loam, sanay � � a-�i . I I I I � I I I � I I loam. I I I I I I I I 1 � 138-601Gravelly loamy: ISM IA-1, A-2 I 0-10 I55-85 450-75 130-65 112-30 I -<15 I NP-2 - ', I I sand, loamy I I I 1 I I I I I I I coarse sand, I I I I I I - I I I E 1 I sandy loam,s�d•� I I � 1 1 I I --- I � f y I I loam. I I I I I I I I I pA, SpB----'--- 131-601511tygelay,1s11tyICL' � IA-6, A-7 I o � 100 195-100190-100175-95 I 25-5o I SP25 Shaker I 9-311Fine sand loam, ISM, NII. �A-2, A-4 I 0 � 100 195-100160-95 130-60 1 I NP i I � � � ' I i clay loam, cla9•� I I I � I I I I I 1 I I I I . . I I I I I 1 ,A, SrH---------� 0-13IFine sandy loam ISM, MI. IA-2, A-4, 1 0-5 185-300�70-100140-90 IZO-55 I --- I NP � !sudbur9 I 1 I � A-1 I I 1 I I I I { j li3-i9lsanay ioam, Pine ISM IA-Z, n-4,1 0-5 185-ioo16o-iool4o-Bo Izo-5o I --- I- NP I I sandy loam, I I A-1 I I I I I I I ' I I gravelly sandy I I I I 1 I I I L. I I loam. I I I I I I I I I �19-z6�Gravelly coarse �SM, SP-SM �A-1, A-2,� 0-5 I70-10a160-700130-'/0 I 5-35 � --- � NP� C 1 I 1 sand, loamy I I A-3 I I I I I I I I 1 sand, sandy I I I I I I I I I ' I 1 loam. I I 1 I I I I I I 126-60�Stratifiea sand ISP; SP-SM,IA-1 I10-40 135-70 125-65 I15-45 I 0-10 I -- I NP and gravel. I GP, GP-GMI I I I I I . I I ' �.! I I 1 I f I I I 1 I I i � - - -----I 0-3 IHemlc material---IYt IA-8 I ___ I ___ � ___ I ___ � � ___ � =-- I NP Swansea I 3-221Sapric matsrial, IPt IA-8 I I I I � I I NP � I I hemic material. I I I 1 I I I I I I � �� 22-6015and, ioamy �sM, SP-SM IA-1, A-2,1 0 I55-IOOIuS-100130-7o I 5-30 I I NP �I � ) I I coarae sand, I I A-3 I I I 1 I I I 1. � gravelly loamy I 1 I I I I I I I I I coarse sana. I I I I I I I 1 I ' I I I I I I I I I I I ; �c. I I 1 I I I I. I I I i l .�dSpsamments � � � I - � I � . -� � � � � � � I I I I I I I I I I 1 I I I I I I I I 1 I I Hdorthents I I I I I I I I I I I I I I I I I I I I 1 I �-�''• I I I I I I I I I I I �Urban land I I 1 I I I I 1 1 I I I I I I I I I I I I I See footnote at end of table. ..� 1[ ii ' ;:<: ' �� " isz � � � � sou s��ey �'. �_� ' ; . TABLE� 15•--PHYSICAL AND CHEMICAL PROPERTIES OP TF� SOILS--Continued , � -- Erosion Soll name and I Depth I Permeablllty � . Available� I Soll reaction�-I Shrink-swell I factors � i"i map symDol � I I - ' 1 water capacity I I potential I�- . � � I i I In � In/hr in/Sn I -�H i i x i T t I I I - ScA-------------'I. 0-8� I • 0.2-2.0 I . - 0.14-0.30 I 5.1-T.3 ILow------------I 0.49 I 3 � ( � -` scitico I 8-42 I �. . <0.2 ,I 0.11-0.21 I 5.1-7.3 INloderate-------I 0.43 1 � ' 1 4z-6o I <0.2 � 0.09-0�.21 I �5.6-7.3 IModerate----=-� 0.28 � '� sgB______________j. 0-9 I z.o-6.0 - I o.11-o.0 I � 3.6-6.o jLow-------=- --F . o.zq I 3 Scituate I . 9-38 I 2.0-6.0 I - 0.09-0.16 � 3.6-6.o ILow-----------�� 0.24 I � i ) I 38-60 I 0.06-0.2 I 0.01-0.07 I � 3.6-6.0 �Low------------I 0.24 I ,. ShB, ShC---------j-. 0-5 J 2.0-6.0 I 0.09-0.18 I 3.6-6.0 ILow------------j � 0.17 � 3 � scituate ;��I 5-38 I - 2.0-6.0 I 0.09-o.16 I 3.6-6.0 ILow---------- _� 0.24 � I 38-60 I 0.06-0.2 � 0.01-0.07 I 3•6-6.0 ILow------------I 0.24 I � � I I �, SmH--------------j 0-5 I 2.0-6.0 � 0.08-0.15 I 3.6-6.0 ILow------------j o.17 I 3 Scltuate � � I- 5-38 I � 2.0-6.0 � 0.09-0.16 I 3.6-6.0 ILow--------_---I 0.24 I f 38-6o I o.o6-o.z I a.o1-o.07 I 3.6-6.o ILow------- ---I o.zu � ;� Soa, SoC---------I 0-5 I 2.0-6.0 - I 0.07-0.19 - I 3.6-6.0 ILow------------I 0.17 I 3 j I Scituate 1-. .5-38 I 2.0-6.0 I 0.09-0.76 I 3.6-6.0 � �Low------------I 0.24 � . � I 38-6o I O.o6-o.2 I �0.01-0.07 � 3.6-6.0 ILow-----------� 0.24 I I I I I I I I spA, sp»---------I a-9�� I 2.0-6.o I o.14-0.24 � 5.1-6.5 ILow------------� 0.24 I 3 i � Shaker I 9-31 I 2.0-6.0 I 0.13-0.22 I 5.1-6.5 ILow-----------I 0.24 I . i 31-60 i <0.2 i 0.12-0.18 j 5.6-7.3 . iLow-------'----I 0.49 I ScA, SrB--------� 0-13 I ?.0-6.0 I 0.10-0.25 I 3.6-6.0 ILow------------� 0.24 I 3 , suaeury I 13-19 I z.o-6.0 � 0.07,-o.i8 I � 3.6-6.0 � �Low------------� o.z4 I '! 1 .19-26 I �2.0-20 I o.01-0.15 I 3.6-6.0 ILow------------� 0.17 � � j i 26-60 i 6.0-20 i 0.01-0.06 i 3.6-6.0 �Low------------I o.io � � � I I I ,' ss---------------� 0-3 I 0.6-6.0 I 0.35-0.45 I 3.6-4.4 �Low-----------_I ---- I --- Swansea I 3-22 � � 0.6-6.o I -0.35-0.45 1 �3.6-4.4 li.ow---------- � ---- � i � i 22-60 i >20 i o.01-0.08 I 3.6-5.5 ILow----------I 0.10 � � �i I I � � I I I UAC. � � � Udipsartunents � I � � � � � I � I � I I I � UD. I I I I I I I Udorthents I I I I I � � tr I ' Ur+. I I � � UrDan land � � � � I � I t I l I I � ; waa, waa---------I o-9 I z.o-6.o I o.io-o.23 I 4.5-6.o ILow----------__I o.zo I 3 Walpole I 9-22 I 2.0-6.0 I 0.07-0.18 � , 4,5_6.0 ILow------------I o.24 I � I 22-6o I >6.0 � 0.01-0.13 I 4.5-6.0 ILow------------� 0.10 I '' � � � ` I I I I We---------------I 0-lo I 6.0-20 .I o.06-0:15 I . 3.6-5.5 ILow-----------I o.17 � 5 E : Wareham I 30-16 I 6.0-20 I 0.03-0.13 I 3.6-5.5 ILow------------I o.i'/ � � I 16-24 I 6.0-2o i o.01-0.13 I 3.6-5.5 ILow------------I o.17 I I 24-6o I 6.0-2o I o.01-0.7o I 3.6-6.5 ILow-----------_� 0.10 � , I I I I I I I . Wf-------------� 0-la I 0.6-6.0 1� 0.15-0.20 I 4.5-6.5 ILow------------I 0.24 I 3 { � Whately Variant I 10-z4 ( . z.o-6.o I o.o8-o.io I 4.5-6.5 ILow------------I o.i7 I 1 z4-6o I <o.z i o.io-o.15 I 6.6-7.3 � IModerate-------I o.z4 � I I I I I I I i�m------------__� 0-4 I o.6-6.o I o.12-o.z6 I 4.5-6.5 ILow------------I o.zo � 3 � Whitman I 4-14 � 0.6-6.0 I 0.10-0.17 I 4:5-6.5 ILow------------� 0.32 I i � I 1q-22 I <0.2 I O.o3-o.04 . I a.5-6.5 ILow------------I o.24 � � 22-6o I <0.2 I o.02-0.03 I 4.5-6.5 ILow------------I o.24 1 ,; WnA, WnB, WnC, b � . � � . � � I WnD-------------� o-io � >6.o I o.os-o.iz I u.5-6.0 �Low------------� o.i7 I 5 � � Winasor . � 10-30 1 >6.0 I 0.02-0.12 I 4.5-6.0 �Low------------� 0.17 I I 30-6o i >6.o I o.oi-o.o8 I 4.5-6.5 ILow-----------� o.io I I I I I I I ' wrB, wrc---------I o-6 � o.6-z.o � o.oe-o.23 I 4.5-6.o ILow------------I o.2u I 3 wooatria�e I 6-z5 I o.6-2.o I o.o6-o.zo I 4.5-6.o ILow-----------I o.32 1 � , I 25-60 � <0.2 I o.o5-o.i2 I 4.5-6.5 ILow------------� o.z4 � I I I I I I I ,� See footnote at end of table. � �.i � l k , - r � > , 166 � Soil survey � � ' � TAHLE 16.--SOIL AND�WATEFt FEATURES--Contlnued ' •.-. Floodin �- . � HS h water table Risk of corrosion � i Soil name and �Hydro-�. ' - �Potentiall�-- : t map symbol - � I logicl-Prequency� � Duratlon IMonths � Depth � Aind IMonths I' frost IUncoated IConcrete , - - I- rou� �. I :��. I. I � I I - I I action I steel I � Pt _______I I I I I I I I I I r c ScA-------- � I• C INone--------I -- I --- . I 0-1.OIPerched INov-MaylHigh-----IHigh-----�Moderate. ; Scltico � � i � I I I I I j � SgB, ShB, ShC, I I I I I 1 I I I I SmB, SoB, SoC----I C .INone--------I --- ( --- I1.5-3•Olperched INov-MaylModerate Iliaw------IHigh. ! � Scituate' I I I I I I I � 1 I I :, I I I I I I I I I i ' SpA, SpH----------i C iNone--------i --- i --- i 0-7.5iPerched iNov-MayiHigh-----iModerate iModerate. Shaker I 1 I I I I I I I I � � SrA, SrR----------� B INone--------� --- � --- R.5-3•OlApparentlDec-Apr�Moderate ILow------�High. j Sudbury � - I� I I I I I I � I I I � ' I I I I I I I I I I Ss----------------� D INone--------I --- I --- � I 0-1.OIApparentlJan-DeclHigh-----IHigh-----IHlgh. Swansea .I � � � .� � � � � � . � � t I I I I I I I I I � I � ` �A�• I I I I I I I I I I ' Udipsamments I I I I I I I I I I I i 1 I I I I I I I UD. I I I I 1 I I 1 I I .Udorthents .I 1 I � � � � � - � � � I , I I I I 1 I I I I I �;� Ur*. I I 1 I I I I I I I Urban land � I � � � � � � � � � . I I . I I I I I i I I . : WaA, WaB----------I C INone--------� �--- � --= I 0-1.OIApparentlNov-AprlHigh-----ILow------IHlgh. Wa7pole I I I I I I f I I , I I I I I ! I I 1 I We----------------I C INone--------I --- I -- I 0-1:51ApparentlSep-JunlModerate IModerate �High. Wareham I I 1 I I " I I I 1 I I I ' I I I I I I I I � ; W£----------------� D INone--------I --- ( --- I 0-1.OIApparenLlNov-JunlHigh-----IHigh-----IHigh. , Whately variant I I I � I I I I I 1 --------I I I I I I I I I I '+!�-------- I D : INone--------I --- I --- I +1-O.11Perched ISep-JunlHlgh-----IHigh-----�High. Whitman I I I I I I I I I 1 ; I I I I I I I I I I i . WnA, WnB, WnC, I I I I I I I I I I WnD--------------I n INone--------I --- I --- I >6.0 I --- I -- ILow------�Low------IHigh. Windsor 1 I I I I I I I I - I � WrB, WrC, WsB, I I I I � I I I I I � � WsC, 47sD---------I C INone--------I --- I- -- 11.5-3•OlPerched INov-MaylHigh-----I�w------�Moderate. Woodbridge I I I I 1 I I I I I I I I I � I I I I I I j ,' * See description of the map unit for composition and behavlor�characteristics of the map unit. � ' � t ' � ) , i1 , tj ' � p '. 1 � � � , � � '. v� � Vanasse HangemBmsflin,Inc. r � ' I l ' i � � Appendix C: � . � T5S Removal Worksheet � � � � , � i � � : � i' , , i: ; �: � i� ; � . �� < i �� t � �� : �� G '�. lc\p9619.00\reports\Drainage Report\April 2006\09�49 Drainage Report-finalduc � � � � � � � � � � � � � � � � � i � VHB Vanasse Hangen Brustlin, Inc. • . . , • o - Consulting Engineers and Planners 101 Walnut St., Watertown, MA Q2471 Name: YMCA at Leggs Hill Proj. No.: 09044.00 (617) 924-1770 Date: April 2006 Locafion: Salem/Marblehead, Computed by: JWM Massachusetts Checked by: CDN A B C D E BMP TSS Removal Starting TSS Amount Remaining Rate Load' Removed (BxC) Load (C-D) Street sweeping 10 1.00 0.1 0.90 Deep Sump Catch 25 0.90 0.23 0.68 Basins Water Quality �0 0.68 0.47 0.20 Device TOta� TS$ R@fT10V8�= • Discharge Point: $�% Existing pond Notes: 'Starting TSS Load for first BMP= 1.00. TSS load for subsequent BMP's is equal to the Remaining Load (E) from the previous BMP. L:\09044.00\ssheets\Drainage\09044_TSS-Rem ova I_DP1.xls � � � � � � � � i � � � � � � � � � � VHB Vanasse Hangen Brustlin, Inc. . • . - • • Consulting Engineers and Planners 101 Walnut St., Watertown, MA 02471 Name: YMCA at Leggs Hill Proj. No.: 09044.00 (617) 924-1770 Date: April 2006 Location: Salem/Marblehead, Computed by: JWM Massachusetts Checked by: CDN A B C D E BMP TSS Removal Starting TSS Amount Remaining Rate Load* Removed (BxC) Load (C-D) Street sweeping 10 1.00 0.1 0.90 Deep Sump Catch 25 0.90 0.23 0.68 Basins Water Quality �0 0.68 0.47 0.20 � Device = Dischar e Point: Total TSS Removal 4 8�% Leggs Hill Road closed drainage system Notes: 'Starting TSS Load for first BMP= 1.00. TSS load for subsequent BMP's is equal to the Remaining Load (E) from the previous BMP. L:\09044.00\ssheets\Drai nage\09044_TSS-Removal_DP4.xls , ' I1�/� Vanasse Hangen Brustlin,Inc. , � Appendix D: � Hydrologic/ Hydraulic Analyses � � � � � � � � � � � � � ' L:\P�099.00\reporLc\DrainageReport\Apri12006\09044D�vnageReporo-final.da ! � v�IB Vanasse Hangen Brustlin,Inc � � HydroCAD Analysis: Existing Conditions � 1 � ' � ' � ' , ,� 1 � � � � � L\09094.00\ceporis\UraiwgeRepor�\Apri12006\09049DrainageRepotl-fiwl.doc � J �f � i 1 � �K N Eu�X. 3� � y��Y 3�«'y .�, z.a - . �T`Mvh� � �� ,'�` ��a FDF�: a-- �EX,fi�' Tributary ,�w ;_, � � �_ _ � �=��rvY �� x-�-'= �sy-��.:> z5 a DF3` To Ex Pond �"�`�m' , g�}� � � M EX�2x= ��:-. � � To Leggs Hill Roa� _��.``�' �� ' DP2 --0 �5 � 4�� . - �"`€'e++'k+x: ". E�X4� Forest River T k:Y". � To LHR Closed ,, � ;�, Drainage System �'"$ ° � DP4µ , ; - � � � , , � ��:�� ;��; � t: Stibcat Reach ,�on y Llnk' Drainage Diagrem for 09044-IX `=",r��,� ��= i ��' �`�';;�� Frepared by VHBJ,lr1C. i 4/tZ/2006 HydroCAD�7.10 s/n 0�1234 O 2005 HydroCAD Software Solutions LLC ' . �' Jv� Vanasse Hangen Bn�stlin,Inc. �' 2-Year Storm Event- Existing ,�. � ' � � ' a � � �i � � � � � � �� ' L\09044-00\reporis\DrainageFeport�.4pri1?A06\09094DainageReport-final.doc � � � 09044-EX Type 11124-hr 2 year Rainfa11=3.20" � Prepared by VHB, Ina Page 2 �droCADO 7.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17/2006 � Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 points , Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method � Subcatchment EX1: To Ex. Pond Runoff Area=166,140 sf Runoff Depth=1.15" Flow Length=503' Tc=14.8 min CN=76 Runoff=3.76 cfs 0.366 af � � Subcatchment EX2: To Leggs Hill Road Runoff Area=`I55,509 sf Runoff Depth=1.21" FlowLength=661' Tc=9.1 min CN=77 Runoff=4.43 cfs 0.361 af � Subcatchment EX3: Tributary Runoff Area=119,162 sf Runoff Depth=1.04" Flow Length=226' Tc=7.6 min CN=74 Runoff=2.98 cfs 0.237 af � Subcatchment EX4: To LHR Closed Drainage System Runoff Area=191,268 sf Runoff Depth=1.15" Flow Length=384' Tc=7.4 min CN=76 Runoff=5:45 cfs 0.422 af Reach DP1: Inflow=3.76 cfs 0.366 af ,� Outflow=3.76 cfs 0.366-af Reach DP2: Inflow=4.43 cfs 0.361 af � OuMow=4.43 cfs 0.361 af Reach DP3: Inflow=2.98 cfs 0237 af � Outflow=2.98 cfs 0.237 af Reach DP4: Inflow-5.45 cfs 0.422 af � Outflow=5.45 cfs 0.422 af Reach DPS: Forest River Inflow=7.37 cfs 0.597 af Out#low=7.37 cfs 0.597 af � Total Runoff Area = 14.511 ac f�unoff Volume= 7.385 af Averege Runoff Depth =1.i5" � � � 1 � � 1 � , � �' 09044-EX Type 11124-1ir 2 year Rainfall=3.20" ,� Prepared by VHB, Ina Page 3 HydroCAD R0 7.10 s/n 001234 OO 2005 HydroCAD Software Solutions LLC 4l17/2006 � Subcatchment EX1: To Ex. Pond Runoff = 3.76 cfs @ 12.22 hYs, Volume= 0.366 af, Depth= 1.15" '� Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt=0.01 hrs Type III 24-hr 2 year Rainfa11=3.20" � Area (sf} CN Description 162,474 76 Woods/grass comb., Fair, HSG C 3 666 98 Compacted PathwaV � 166,140 76 WeightedAverage � Tc Length Siope Velocity Capacity Description �min� (feet) (ff/ft) (ftlsec) (cfs) `� 13.8 50 0.0150 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20". 1.0 453 02080 7.3 Shaliow Concentrated Flow, � Unpaved Kv= 16 1 fps ' 14.8 503 Total I, � Subcatchment EX2: To Leggs Mill Road Runoff = 4.43 cfs @ 12.14 hrs, Volume= 0.361 af, Deptti= 1:21" ��, Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type 111 24-hr 2 year Rainfa11=3.20" ', � Area (s� . CN. Description ' 39,683 73 Woods, Fair, HSG C 8;668 98 Compacted Pathway � 102,976 76 Woods/grass comb., Fair, NSG C 4,182 98 Ledqe 155,509 77 Weighted Average ` � Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) � 6.9 50 0.0870 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" 2.2 611 0.0830 4.6 Shailow Concentrated Fiow, Unpaved Kv= 16 lfps 9:1 661 Total �' Subcatchment EX3: Tributary � Runoff = 2.98 cfs @ 12.12 hrs, Volume= 0.237 af, Depth= 1.04" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � Type III 24-hr 2 year Rainfa11=3.20" � l� � 09044-EX Type 1I!24-hr 2.year Rainfa11=3.20" � Prepared by VHB, Inc. Page 4 HydroCADO 7.10 s/n 001234 OO 2005 HvdroCAD Software Solutions LLC 4/17l2006 � Area (sfl CN Description 83,614 73 Woods, Fair, HSG C 35,548 76 Woods/qrass comb Fair HSG C � 119,162 74 WeightedAverage Tc Length Siope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) � 7.1 50 0:0800 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" 0.4 111 0.0720 4.3 Shallow Concentrated Flow, �� Unpaved Kv= 16.1 fps 0.1 65 0.5690 12.1 Shallow Concentrated Flow, Unpaved Kv= 16 lfps 7.6 226 Total � Subcatchment EX4: To LHR Glosed Drainage System � Runoff = 5.45 cfs @ 12.11 hrs, Volume= 0.422 af, Depth= 1.15" Runoff by SCS TR-20 method, UH=SCS,Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � Type 111.24-hr 2 year Rainfa11=320" Area (s� CN Descnption � 53,316 76 Woods/grass comb., Fair, HSG C 121,834 73 Woods, Fair, HSG C 4,578 98 Compacted Pathway _ 11 540 98 Ledqe � 191,268 76 Weighted Average Tc Length Slope Velocity Capacity Descri,ption � _(min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 50 0.1200 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" � 1.4 334 0.0600 3.9 Shallow Concentrated Flow, Unpaved Kv= 16 1 fps 7.4 384 Total � Reach DP1: Inflow Area = 3.814 ac, Inflow Depth = 1.15" for 2 year event Inflow = - 3.76 cfs @ 12.22 hrs, Volume= 0.366 af OutFlow = 3.76 cfs @ 12.22 hrs, Volume= 0.366 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt=0.01 hrs � ,� I � � � 09044-EX Type Ill 24-hr 2 year Rainfall=3.20" � Prepared by VHB, Inc. Page 5 �droCAD R0 7.10 s/n 001234 OO 2005 HvdroCAD Software Solutions LLC 4/17(2006 � Reach DP2: Inflow Area = 3.570 ac, Inflow Depth = 1.21" for 2 year event � Inflow = 4.43 cfs @ 12.14 hrs, Volume= 0.361 af Outflow 4.43 cfs @ 12.14 hrs, Volume= 0.361 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Reach DP3: � inflow Area = 2736 ac, Inflow Depth = 1.04" for 2 year event Inflow 2.98 cfs @ 12.12 hrs, Volume= 0.237 af Outflow = 2.98 cfs @ 12.12 hrs, Volume= 0.237 af, Atten=0%, Lag= 0.0 min �� Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Reach DP4: �I Inflow Area = 4.391 ac, Inflow Depth = 1.15" for 2 year event Inflow = 5.45 cfs @ 12.11 tirs, Volume= 0.422 af � Outflow = 5.45 cfs @ 12.11 hrs, Volume= 0.422 af, Rtten= 0%, Lag= 0.0 min Routing by Stor-Ynd+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs ,� Reach DP5: Forest River fnflow Area = 6,306 ac, inflow Depth = 1.14" for 2.year event �, Inflow = 7.37 cfs @ 12.13hrs, Volume= 0:597 af Outflow 7.37 cfs @ 12:13 hrs, Volume= 0.597 af, Atten= 0%, Lag=0:0 min � Routing by Stor-Ind+Trans method, Time Span= O.OQ-30.00 hrs, dt� 0.01 hrs � � � � � �� Vanasse Hangen Brustlin,Inc , �� 10-Year Storm Event - Existing � � � '� .� �� ,� � � � I � � � L\09044.00\reports\DrainageReportWpri12006\09044DrainageReport-FiwLdoc � . � � 09044-EX Type lll 24-hr 10 year Rainfa11=4.60" -� Prepared by VHB, Inc. Page 6 HydroCAD R0 7.10 s/n 001234.00 2005 HvdroCAD Software Solutions LLC 4/17/2006 � Time span=0.0030.00 hrs, dt=0.01 hrs, 3001 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method � 3ubcatchment EX1: To Ex. Pond Runoff Area=166,140 sf Runoff Depth=2.21" - Flow Length=503' Tc=14.8 min CN=76 Runoff=7.46 cfs 0.702 af � Subcatchment EX2:To Leggs Hill Road Runoff Area=155,509 sf Runoff Depth=2.29" Flow Length=661' Tc=9.1 min CN=77 Runoff=8.60 cfs 0.682 af 1 Subcatchment EX3: Tributary Runoff Area=119,162 sf Runoff Depth=2.05" Flow Length=22fi' Tc=7.6 min CN=74 Runoff=6.16 cfs 0.467 af Subcatchment EX4: To LHR Closed Drainage System Runoff Area=191,268 sf Runoff Depth=2.21" ,� Flow Lengtli=384' Tc=7.4 min CN=76 Runoff=10.79 cfs 0.809 af Reach DP1: Inflow=7.46 cfs 0.702 af �, OutFlow=7.46 cfs O.P02 af Reach DP2: Inflow=8.60 cfs 0.682 af Outflow=8.fi0 cfs 0.682 af � � Reach DP3: Inflow=6.t6 cfs 0.467 af 1 Outflow=6.t6 cfs 0.467 af Reach DP4: Inflow=10.79 cfs 0:809 af � Outflow=10.79 cfs 0.809 af Reaeh DPS: Forest River Inflow=14.70 cfs 1.149 af Outflow=14.70 cfs 1.149 af � Total Runoff Area= 74.511 ac Runoff Volume=2.660.af Average Runoff Depth =2.20" I 1 � � � �� '�� 09044EX Type (I124-hr 10 year Rainfall=4:60" � Prepared by VHB, Inc. Page 7 HydroCADO 7.10 s/n 001234 0 2005 HvdroCAD Software Solutions LLC 4l17/2006 Subcatchment EX1: To Eu. Pond �' Runoff = 7.46 cfs @ 12.21 hrs, Volume= 0.702 af, Depth= 221" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 10 year Rainfa11=4.60" � _ Area (s� CN Description 162,474 76 Woods/grass comb., Fair, HSG C 3;666 98 Compacted Pathway 1 166,140 76 Weighted Average " Tc Length Slope Velocity Capacity Description � (min) (feet) (ft!ft) (fUsec) (cfs) 13.8 50 0.0150 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 320" I � 1.0 453 0.2080 7.3 Shallow Concentreted Flow, Unpaved Kv= 16 1 fps 14.8 503 Total � Subcatchment EX2: To Leggs Hill Road Runoff = 8.60 cfs @ 12.13 hrs, Volume= 0.682 af, Depth= 2.29" � RunoEf by SCS TR-20 method, UPi=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 10 year Rainfa11=4.60" , �� Area (sfl GN Description 39,683 73 Woods, Fair, MSGC 8,668 98 Compacted Pathway � � 102;976 76 Woodslgrass comb., Fair, MSG C 4,182 98 Ledae 155,509 77 Weighted Average I � Tc Length Slope Vebcity Capacity Description _ (min) (feet) (ft/ft) (ft/sec) (cfs) � 6.9 50 0.0870 0.1 Sheet Flow, Woods: Light underbrush n=0.400 P2= 3.20" 2.2 611 0.0830 4.6 Shallow Concentreted Fiow, Unpaved Kv= 16 1 fps � 9.1 661 Total SubcatchmentEX3: Tributary 1 Runoff = 6.16 cfs @ 12.11 hrs, Volume= 0.467 af, Depth= 2.05" Runoff by SCS TR-20 method, UH=SCS, Time Span=0.00-30.00 hrs, dt= 0.01 hrs �, Type III 24-hr 10 year Rainfa11=4.60" � � � 09044-EX Type Ill 24-hr 10 year Rainfall=4:60" � Prepared by VHB, Inc. Page 8 HydroCADO 7.10 s!n 001234 0 2005 HvdroCAD Software Solutions LLC 4/17/2006 � Area (sfl CN Description 83,614 73 Woods, Fair, HSG C 35 548 76 Woods/arass comb Fair HSG C � 119,162 74 We�ghted Average Tc Length Slope Velocity Capacity Description (min) (feefl (ft/ft) (ft/sec) (cfs) ' 7.1 50 0.0800 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" 0.4 111 0.0720 4.3 Shallow Concentrated Flow, �' Unpaved Kv= 16.1 fps 0.1 65 0.5690 12.1 Shallow Concentrated Flow, Unpaved Kv= 16 1 fps � 7.6 226 Total Subcatchment EX4: To LHR Glosed Drainage System Runoff = 10.79 cfs @ 12.11 hrs, Volume= 0.809 af, Depth= 2.21" �' Runotfi by SGS TR-20 method, UH=SCS, Time Span=.0.00-30.00 hrs, dt= 0.01 hrs Type II I 24-hr 10 year.Rainfa11=4.60" � Area (s� CN Description � 53,316 76 Woods/g"rass comb., Fair, HSG C 121,834 73 Woo.ds, Fair, HSG C 4,578 98 Compacted Pathway 11 540 98 Letlqe � 191,268 76 Weighted Average Tc Length Slope Veloeity Capaciry Description � (min) (feet) (ft/ft) (ft/sec) , (cfs) 6.0 50 0.1200 0.1 Sheet Flow, Woods: Light undecbrush n= 0.4d0 P2= 3.20" � 1.4 334 0.0600 3.9 Shallow Coneentrated Flow, Unpaved Kv= 16 1 fps � 7.4 384 Total � Reach DP1: Inflow Area = 3.814 ac, Inflow Depth = 2.21" foc 10 year event � Inflow = 7.46 cfs @ 12.21 hrs, Volume= 0.702 af Outflow 7.46 cfs @ 12.21 hrs, Volume= 0.702 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � � � � 09044-EX Type III 24-hr 10 year Rainfa11=4.60" � Prepared by VHB, Inc. Page 9 �droCAD�7.10 s/n 001234 0 2005 HydroCAD Software Solutions LLC 4/17/2006 � Reach DP2: Inflow Area = 3.570 ac, Inflow Depth = 2.29" for 10 year event � Inflow = 8.60 cfs @ 12.13 hrs, Volume= 0.682 af Outflow 8.60 cfs @ 12.13 hrs, Volume= 0:682 af, Atten= 0%, Lag=0.0 min Routing by Stor-Ind+Trans method,Time Span=0.00-30.OQ hrs, dt= 0.01 hrs �� Reach DP3: �� Inflow Area = 2:736 ac, Inflow Depth = 2.05" for 10 year event Inflow 6.16 cfs @ 12.11 hrs, Volume= 0.467 af Outflow = 6.16 cfs @ 12.11 hrs, Volume= 0.467 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � Reach DP4: Inflow Area = 4.391 ac, Inflow Depth= 2.21" for 10.year event Inflow = 10.79 cfs @ 12:11 hrs, Volume= 0.809 af � Outflow = 10.79 cfs @ 12.11 hrs, Volume= 0.809 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs �, Reach DP5: Forest River � Inflow Area = 6:306 ac, Inflow Depth = 2.19" for 10 year event Inflow 1470 cfs @ 12.12 hrs, Volume= 1.149 af OutFlow 14.70 cfs @ 12:12 hrs, Volume= 1.149 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Irid+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � �I � � ' � � � � ,� � � � Vanasse F3angai Brustlam,Inc. '� 25-Year Storm Event- Existing �. ,� . � � � � � � � � � � � � � � L:\09044.00\reports\DrainageAeportV+pri12006\09094Da"vugeReporFfinaLdoc � , 09044-EX Type 1I124-hr 25 year Rainfal1=5.40" � Prepared by VHB, Inc. Page 10 HydroCAD�7.10 s/n 001234 0 2005 HydroCAD Software Solutions LLC 4/17/2006 I Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method � Subcatchment EX1: To Ex. Pond Runoff Area=166,140 sf Runoff Depth=2.87" Flow Length=503' Tc=14.8 min CN=76 Runoff=9.74 efs 0.912 af � Subcatchment EX2: To Leggs Hill Road Runoff Area=155,509 sf Runoff Depth=2.96" Flow Length=661' Tc=9.1 min CN=77 Runoff=11.15 cfs 0.881 af � Subcafchment EX3: Teibutary Runoff Area=119,162 sf Runoff Depth=2.69" Flow Length=226' Tc=7.6 min CN=74 Runoff=8.13 cfs 0.613 af � Subcatchmen0 EX4:"To LNR Cbsed Drainage System Runoff Area=191,268 sf Runoff Depth=2.87" Flow Length=384' Tc=7.4 min CN=76 Runoff=14.07 cfs 1.050 af Reach DP1: Inflow=9.74 cfs 0.912 af � Outflow=9.74 cfs 0.912 af ReachDP2: Inflow=11.t5cfs 0.881af � Outflow=11.15 cfs 0.881 af ' Reach DP3: Inflow=8.13 cfs 0:613 af � Outflow=8.13 cfs 0.613 af Reaeh DP4: Inflow=14.07 cfs 1.050 af � Outflow=14:07 cfs 1.050 af Reach DPS: Forest River Inflow=19:20 cfs 1.493 af Outflbw=19.20 cfs 1.493 af � Total Runoff Area= 1,4:511 ac Runoff Volume=3.455 af Average Runoff Depth =2.86" 1 � � � � T ^ � , 09044-EX Type III 24-hr 25 year Rainfa11=5.40" I ' Prepared by VHB, Inc. Page 11 HydroCADB 7.10 s!n�01234 O 2005 HvdroCAD Software Solutions LLC 4l17/2006 � Subcatchment EX1: To F�c. Pond Runoff = 9,74 cfs @ 12.20 hrs, Volume= 0.912 af, Depth= 2.87" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 25 year Rainfa11=5.40" � Area (sfl CN Description 162,474 76 Woods/grass comb., Fair, HSG C 3,666 98 Compacted Pathway 1 166,140 76 Weighted Average Tc Length Slope Velocity Capacity Description � (min) (feet) (ft/ft) (ft/sec) (cfs) 13.8 50 0.0150 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" � 1.0 453 0.2080 7.3 Shallow Goncentrated Flow, Unpaved Kv= 16 1 fps 14.8 503 Total � Subcatcliment EX2: To Leggs Hill Road Runoff = 11.15 cfs�a 12.13 hrs, Volume= 0.881 af, Depth= 2.96" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hts, dt= 0.01 hts 'Type III 24-hr 25 year Rainfall=5.40" � Area (s� CN Description 39;683 73 Woods, Fair, HSG C 8,668 98 Compacted Pathway � 102,976 76 Woods[grass eomb., Fair, HSG C 4,182 98 Ledqe 155,509 77 Weighted Average ' ' Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) � 6.9 50 0.0870 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" 2.2 611 0.0830 4.6 Shallow Concentrated Flow, ____ Unpaved Kv= 16 1 fps ', 9.1 661 Total Subcatchment EX3: Tributary � Runoff = 8.13 cfs @ 12.11 hrs, Volume= 0.613 af, Depth= 2.69" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 25 year Rairifa11=5.40" ' � � 09044-EX Type lIl 24-hr 25 year Rainfaf1=5.40" Prepared by VHB, Inc. Page 12 � HydroCADO 7.10 s/n 001234 OO 2005 HvdroCAD Software Solutions LLC 4/17/2006 � Area (s� CN Description 83,614 73 Woods, Fair, HSG C 35,548 76 Woods/arass comb Fair HSG C ,' 119,162 74 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) � 7.1 50 0.0800 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" 0.4 111 0.0720 4.3 Shallow Concentrated Flow, •� Unpaved Kv= 16.1 fps 0.1 65 0.5690 12.1 Shallow 6oncentrated Flow, ' Unpaved Kv= 16 1 fps � 7.6 226 Total Subcatchment EX4: To LHR Closed Drainage System � Runoff = 14.07 cfs @ 12.11 hrs, Volume= 1.050 af, Depth= 2.87'` Run�ff by SCS TR-20 method, UH=SCS, Time Span= 0:00-30.00 hrs, dt= 0.01 hrs � Type lll 24-hc 25 year Rainfa11=5.40" Area (s� CN Description I 53;316 76 Woods/grass comb., Fair, HSG C 121,834 73 Woods;Fair, HSG C 4,578 98 Compacted Pathway 11,540 98 Led e � 191,268 76 Weighted Average Tc Length Slope Velocity Capacity Deseription � (min) (feet) . (ft/ft) (ft/sec) (cfs) 6.0 50 O.t200 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 320" 1 1.4 334 0.0600 3.9 Shallow Concentrated Flow, Unpaved Kv= 16 1 fps 7.4 384 Total � Reach DP1: Inflow Area = 3.814 ac, Inflow Depth= 2.87" for 25 year event ' Inflow = 9.74 cfs @ 12.20 hrs, Volume= 0.912 af Outflow 9.74 cfs @ 12.20 hrs, Volume= 0.912 af, Atten= 0%, Lag=0.0 min � Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � � i 1 09044EX Type l!I 24-hr 25 year Rainfall=5.40" � Prepared by VHB, Inc. Page 13 HydroCADOO 7.10 5/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17/2006 Reach DP2: , Inflow Area = 3.570 ac, inflow Depth = 2:96" for 25 year event ' Inflow = 11.15 cfs @ 12.13 hrs, Volume= 0.881 af Outflow 11.15 cfs @ 12.13 hrs, Volume= 0.881 af, Atten=0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � Reaeh DP3: � Inflow Area = 2.736 ac, Inflow Depth = 2.69" for 25 year event inflow 8.13 cfs @ 12.11 hrs, Volume= 0.613 af Oatflow = 8:13 cfs @ 12.1t hrs, Volume= 0.613 af, Atten="0%,. Lag= 0.0 min � R�uting by Stor-Ind+Trans method, Time Span= 0.00-30.00 hcs, dt= 0.01 hrs � Reaeh DP4: Inflow Area = 4.391 ac, Inflow Depth = 2.87" for 25 year event Inflow = 14.07 cfs @ 12.11 hrs, Volume= 1.050 af � OutFlow = 14.07 cfs @ 12.11 hrs, Volume= 1.050 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs , Reach DP5: Forest River � Inflow Area = 6.306 ac, Inflow Depth = 2:84" for 25 yeac event Inflow 19.20 cfs @ 12.12 hrs, Volume= 1.493 af Outflow 19,20 cfs.@ 12.12 hrs, Volume= 1.493 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 tirs I, 1 � � � � " � � � 1 1 � r��B VanasseHangen&vstlin.Inc . � 100-Year Storm Event- Ezisting � � � � � � � � i 1 1 � � 1 1 �� L\09099.00\repotts\DreiiugeReport\Apri120�6\09099DraiiugeReport-fiwldoc i 1 09044-EX Type lll 24-hr 100 year Rainfa11=6.60" � Prepared by VHB, Inc. Page 14 HydroCAD�7.tq s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17/2006 � Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method �, Subcatchment EX1: To Ex. Pond Runoff Area=166,140 sf Runoff Depth=3.90" Flow Length=503' Tc=14.8 min CN=76 Runoff=13.26 cfs 1241 af ' Subcatchment EX2: To Leggs Hill Road Runoff Area=155,509 sf Runoff Depth=4.01" Flow Length=661' Tc=9.1 min CN=77 Runoff=15.06 cfs 1.192 af � SubcatGhment EX3: Tributary Runoff Area=119,162 sf Runoff Depth=3:70" Flow Length=226' Tc=7.6 min CN=74 Runoff=11.21 cfs 0.842 af � Subcatchment EX4: To LHR Closed Drainage System Runoff Area=191,268 sf Runoff Depth=3.90" Flow Length=384' Tc=7.4 min CN=76 Runoff=19.13 cfs 1.428 af � Reach DP1: Inflow=13.26 cfs 1.241 af Oufflow=13,26 cfs 1.241 af Reach DP2: Inflow=15.06 cfs 1.192 af � Outflow=15.06 cfs 1.192 af Reach DP3: Inflow=1121 cfs 0.842af � Outflow=1121 cfs 0.842 af ReacH DP4: Inflow=19.13 cfs 1.428 af 1 Outflow=l9 13 cfs 1_428 af Reach DPS: Forest River Inflow=26.17 cfs 2.035 af Outfl6w=26.17 cfs 2.035 af � Total Runoff Area= 14.511 ac RunofE Volume=4:704 af Average Runoff Depth =3.89" 1 � i 1 1 � � , ' 09044-EX Type lfl 24-hr ?00 year Rainfall=6.60" � Prepared by VHB, Inc. Page 15 HydroCAD�7.10 s/n 001234 0 2005 HvdroCAD Software.Soiutions LLC 4/17/2006 ' Subcatahment EX1: To Ex. Pond Runoff = 13.26 cfs @ 12.20 hrs, Volume= 1.241 af, Depth= 3.90" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt=0.01 hrs Type Iil 24.-hr 100 year Rainfall=6.60" � Area (sfl CN Description 162,474 76 Woods/grass comb., Fair, HSG C 3,666 98 Compacted Pathway � 166,140 76 Weighted Average Tc Length Slope Velocity Capacity Description � _(min) .(feet) (ft/ft) (ft/sec) (cfs) 13.8 50 0.0150 0.1 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" 1.0 453 0.2080 7.3 Shallow Concentreted Elow, � Unpaved Kv= 16 1 fps 14.8 503 Total 1 Subcatchment EX2: To Leggs Hill Road Runoff = 15,06 cfs @ 12.13 hrs, Volume= 1.192 af, Depth= 4:01" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0:01 hrs Type III 24-hr 100 year Rainfa11=6.60" , Area (s� CN .Description 39,683 73 Woods, Fair, HSG C 8,668 98 Compaeted Pathway- � 102,976 76 Woods/grass comb., Fair, H$G C 4,182 98 Ledqe 155,509 77 Weighted Averege ' Tc Length Slope Velocity Capacity Dessription (min) (feet) (ft/ft) (ft/sec) (cfs) 6.9 50 0.0870 0.1 Sheet Fiow, � Woods: Light underbrush n= 0.400 P2= 3.20" 2.2 611 0.0830 4.6 Shallow Concentreted Flow, Unpaved Kv= 16 1 fps � 9.1 661 Total Subcatchment EX3: Tributary � Runoff = 11.21 cfs @ 12.11 hrs, Volume= 0.842 af, Depth= 3.70" - � Runoff by SCS TR-20 method, UH=SCS, Time Span=0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfa11=6.60" � i 1 09044EX Type 11124-hr 100 year Rainfall=6.60" � Prepared by VHB, Inc. Page 16 HydroCADO 7.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4117/2006 , Area (s� CN Description 83,614 73 Woods, Fair, HSG C 35 548 76 Woods/qrass comb. Fair HSG C ' 119,162 74 Weighted Average Tc Length Slope Velocity Capacity Description , _(min) (feet) (ft!ft) (ft/sec) (cfs) 7.1 50 0.0800 0:1 Sheet Flow, Woods: Light undeYbrush n= 0.400 P2= 3.20" 0.4 111 0.0720 4.3 �hallow Concentreted Flow, , Unpaved Kv= 16.1 fps 0.1 65 0.5690 12.1 Shallow Goncentrated Flow, Unpaved Kv= 16 1 fps � 7.6 226 Total S�bcatchment EX4: To LHR Ciosed Drainage System ' Runoff = 19.13 efs @ 12.11 hrs, Volume` 1.428 af, Depth= 3:90" Runoff by SCS TR-20 method,:UH=SCS,Time Span= 0.0030.00 hrs, dt= 0.01 hrs , Type III 24-h� 100 year Rainfa11=6.60" Area (sfl CN Description , 53,316 76 Woods/grass comb., Fair, HSG C 121,834 73 Woods, Fair, HSG C 4,578 98 Compacted Pathway 11,540 98 Ledqe , 191,268 76 Weighted Average Tc Length Slope Velocity Capacity pescription � (min) (feet) (ft/ft) (ft/sec) (cfs) . 6.0 50 0.1200 01 SfieetFlow, Woods: Light underbrush n= 0:400 F2'= 3.20" 1 1.4 334 0.0600 3.9 Shallow Concentrated Flow, Unpaved Kv= 16 1 fps 7.4 384 Total � Reash DP1: Inflow Area = 3.814 ac, Inflow Depth = 3.90" for 100 year event ' Inflow _ 13.26 cfs @ 12.20 hrs, Volume= 1.241 af Outflow 13.26 cfs @ 12.20 hrs, Volume= 1.241 af, Atten= 0%, �ag= 0.0 min 1 Routing by Stor-Ind+Trans method, Time Span=0.00-30.00 hrs, dt= 0.01 hrs ' � � � � 09044-EX Type lll 24-hr 100 year Rainfall=6.60" � Prepared by VHB, Ina Page 17 HydroCADO 7.10 s/n 001234 0 2005 HYdroCAD Software Solutions LLC 4/17/2006 ' Reach DP7: Inffow Area = 3.570 ac, Inflow Depth = 4.01" for 100 year event ' Inflow = 15.06 cfs @ 12.13 hrs, Volume= 1.192 af Outflow 15.06 cfs @ 12:13 hrs, Volume= 1.192 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � Reach DP3: 1 Inflow Area- 2.736 ac, Inflow Depth = 3.70" for 100 year event Inflow 11.21 cfs @ 12.11 hrs, Volume= 0.842 af Outflow = 11.21 cfs @ 12.11 hrs, Volume= 0.842 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � Reach DP4: Inflow Area = 4.391 ac,.Inflow Depth = 3.90" for 100 year event Inflow = 19.13 cfs @ 12.11 hrs, Volume= 1.428 af � Outflow = ]9.13 cfs @ 12.11 hrs, Volume= 1.428,af, Atten= 0%, Lag= OA min Routing by S[orvind+Trans method,Time SParr= 0.00-30.00 hrs, dt='0:01 hrs � Reach DR5: ForestRiver ' Infl�w F1rea = 6.306-ac, Inflow Depth = 3.87" for 100 year event Inflow 26.17 cfs @ 12.12 hrs, Volume= 2.035 af Outflow 26:17 cfs @ 12.12 Hrs, Volume= 2.035 af, Atten= 0%, Lag= 0.0 min , Routing by Stor-Ind+Trans method, Time Span= 0,00-30.00 hrs; dt= 0.01 hrs � � � ' , , � � � �� Vanasse Hangen Brustlin,Inc � iHydroCAD Analysis: Proposed Conditions 1 1 1 1 ! ! 1 1 i i 1 i 1 1 1 � - L\09049.00\repurts\DraiwgeReporcVpril2006\09044DrainageReport-EuW.da � � � , ' � ,��>< � P�R3Q �� ' PR32 PR33 ��;� W � � � , , �4 Y 'iC4Nr. PI��1;1> D:?3 �� ' ` z' CI m S�, DP4': �� 3P .^r- PR31: ��.�� . �, - ' PR10 � ;DP1; ��. �,: -�- Field�SDP To SBDI � To Pond �" DF5 � �.�� (new Reach� ; PR40 � � ' �„ DP2 � PR20 To LHR Closed Drainage System To WR 1 � ' � , ; Y Subcat Reacli . ony x Ll�k� Dreinage Diagram for 09044-PR-rev3 �= � Prepared by VHB,Inc. 4/17/2006 HydroCAD�7.10 s/n 007234 �2005 HydmCAD Software Solutions LLC � ' , � Vanasse Hangen BrusUin,Inc. � 2-YearStorm Event- Proposed , � , ' � I 1 � 1 i 1 i i 1 1 1 � L\09044.00\repo�ts\DrainageReponUpri12006\09099DrainageReport-fieWAoc ' � 09044-PR-rev3 Type 1Il 24-h�2 year Rainfal1=3.20" � Prepared by VHB, Inc. Page 2 HydroCADO 7.10 s/n 001234 �0 2005 HvdroCAD Software Solutions LLC 4/17/2006 , Time span=0.0030.00 hrs, dt=0.01 hrs, 3001 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method ' Subcatchment PR10: To Pond Runoff Area=79,474 sf Runoff Depth=1.09" Flow Length=140',Tc=5.4 min CN=75 Runoff=2.29 cfs 0.166 af ' Subcatchment PR11: Runoff Area=32,818 sf Runoff Depth=1.61" Tc=5.0 min CN=83 Runoff=1.47 cfs 0.101 af ' Subcatchment PR20: To LHR Runoff Area=30,217 sf Runoff Depth=1.09" Flow Length=139' Tc=5.3 min CN=75 Runof4=0.87 cfs 0.063 af � Subcatchment PR30: Runoff Area=77,805 sf Runoff Depth=0.98" Tc=5.0 min GN=73 Runoff=2.00 cfs 0:146 af , Subcatchment PR31:To SSDI Runoff Area=229,938 sf Runoff Depth=2.26" Flow Length=772' Tc=8.8 min CN=91 -Runoff=12.50 cfs 0:993 af Subcatchment-PR32: Runoff Area=19,632 Sf Runoff Depth=2.08" ' Flow Length=470' Tc=7.3 min CN=89 . Runoff=1.04.cfs 0.078 af Subcatchment PR33: Runoff Area=20,083 sf Runoff Depth=121" ' Tc=5.0 min CN=77 Runoff=0.66 cfs 0.047 af Subcatchmenf'PR40: To LHR Closed Drainage System Runoff Area=142,142 sf Runoff Depth=1.40" , Flow Length=322' Tc=57 min GN=80 Runoff=5.37 cfs 0:381 af Reach DP1: Inflow=3.75 cfs 0.267 af Outflow=3.75 cfs 0:267 af ! Reach DP2: Inflow=0.87 cfs 0.063 af Outflow=0.87 cfs 0.063 af , � Reach DF3: Inflow=3.68 cfs 0.271 af Outflow=3.68 cfs 0.271 af , ReaCh DP4: Inflow=5.37 cfs 0.381 af Outflow=5.37 cfs 0.381 af � Reach DPS: (new Reach) Inflow=4.55 cfs o.334 af Outflow=4.55 cfs 0.334 af ' Pond 3P: Field 3SDP Peak Elev=88.42' Storage=0.327 af Inflow=12.50 cfs 0.993 af Discarded=1.72 cfs 0.993 af Primary=0.00 cfs 0:000 af Ouiflow=1.72 cfs 0.993 af , Total Runoff Area= 14.511 ac Runoff Volume= 1.976 af Average Runoff Depth =1.63" ' , , 09044-PR-rev3 Type 11I 24-hr 2 year Rainfaf1=3.20" � Prepared by VHB, Inc. Page 3 HydroCADOO 7.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17/2006 , Subcatchment PR10: To Pond Runoff = 2.29 cfs @ 12.�9 hrs, Volume= 0.166 af, Depth= 1.09" ' Runoff by SCS TR-20 method, UH=SGS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 2 year Rainfal1=3.20" � Area (sfl CN Description 21,260 76 Woods/grass comb., Fair, HSG C 58,214 74 >75% Grass cover, Good., HSG C ' 79,474 75 Weighted Average Tc Length Slope Velocity Gapacity Description � _ �min) (feet) (ft/ft) (ft/sec) (cfs) 5.1 50 0.0250 02 Sheet Flow, Grass: Short n= 0.150 P2= 3.20" 0.2 30 0.0250 2:5 Shallow Concentrated Flow, ' Unpaved Kv= 16.1 fps 0.1 60 0.5000 ' 11_4 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps _ ' S.4 140 Total Subcatchment PR11: ' Runoff = 1:47 cfs @ 12.08 hrs, Volume= 0.101 af, pePth= 1.61" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 2 year Rainfa11=3.20" Area (sfl CN Description ' 12,042 98 Paved parking & roofs 20,776 74 >75% Grass cover, Good, HSG C 32,818 83 Weighted Average , Tc Length Slope Velocity Capacity DescriPtion . (min) (feet) (ft/ft) (ft/sec) (cfs) ' 5.0 Direct Entry, Subcatchment PR20: To LHR , ' Runoff = 0.87 cfs @ 12.09 hrs, Volume= 0.063 af, Depth= 1.09" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs ' Type III 24-hr 2 year Rainfa11=3.20" Area (sfl CN Description , 6,558 74 >75% Grass cover, Good, HSG C 21,275 73 Woods, Fair, HSG C 2,384 98 Ledqe 30,217 75 Weighted Average ' , , 09044-PR-rev3 Type 11124-hr 2 year Rainfall=3.20" � . Prepared by VHB, inc. Page 4 HydroCAD�7.10 s/n 001234 �O 2005 HvdroCAD Software Solutions LLC 4/17/2006 , Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.1 50 0.1800 0.2 Sheet Flow, ' Woods: Light underbrush n=.0.400 P2= 3.20" 0.2 89 0.1800 6.8 $hallow Concentrated Flow, Unpaved Kv= 16 1 ips ' 5.3 139 Total Subcatchment PR30: ' Runoff = 2.00 cfs @ 12.08 hrs, Volume= 0.146 af, �Depth= 0.98" , Runoff b.y SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs iype III 24-hr 2 year Rainfa11=3.20" Area (s� CN Description , 77,805 73 Woods, Fair, HSG C Tc Length Slope Velocity Capacity Description ' (min) (feet) (ftlft) .(ft/sec) (cfs) 5.0 Direct Entry, ' Subcatchment PR31: To SSDI Runoff = 12.50.cfs @ 12.12 hrs, Volume= 0.993 af, Depth= 2.26" , Runoff 6y SCS TR-20 method, UH=SCS. Time Span= 0.00-30.00 hrs, dt= 0_01 h�s Type III 24-hr 2 year Rainfa11=3:20" ' Area (s� CN Description 57,380 98 Building 101,7,81 98 Paved roads w/curbs & sewers ' 70,777 74 >75% Grass cover, Good, HSG C 229;938 91 Weighted Average Tc Length Slope Velocity Capacity Description , _�min) (feet). (ft/ft) (ft/sec) (cfs) 7.4 50 0.0100 0.1 Sheet Flow, Grass: Short n= 0.150 P2= 3.20" , 0.7 70 0.0100 1.6 Shallow Concentrated Plow, Unpaved Kv= 16.1 fps 0.2 40 0.0200 2.9 Shailow Concentrated Flow, Paved Kv= 20.3 fps ' 0.5 612 0.1000 20.4 35.99 Circular Channel (pipe), Diam= 18.0" Area= 1.8 sf Perim=4 7' r- 0 38' n= 0 012 8.8 772 Total , ' , , 09044-PR-re�l3 Type ll!24-hr 2 year Rainfal(=3.20" � Prepared by VHB, inc. Page 5 HydroCADO 7.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17/2006 , Subcatchment PR32: Runoff = 1.04 cfs @ 12.10 hrs, Volume= 0.078 af, Depth= 2.08" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 2 year Rainfa11=3.20" ' Area (s� CN Description 7,534 74 >75% Grass cover, Good, HSG C _ 12,098 98 Paved parkinq &'roofs ' 19,632 89 Weighted Average . Tc Length Slope Velocity Capaeity Description ' (min) , (feet) (ft/ft) (ft/sec) (cfs) 5.1 50 0.0250 0.2 Sheet'Flow, Grass: Short n= 0.150' P2= 3.20" ' 2.2 420 0.0250 3.2 Shallow Goncentrated Flow, Paved Kv= 20.3 fps 7.3 470 Total ' Subcatchment PR33: Runoff = 0.66 cfs @ 12.08 hrs, Volume= 0.047 af, Depth= 1.21" ' Runoff by�CS TR-20 method, UH=SCS, Time Span= O.QO-30.00 hrs, dt= 0.01 firs Type Iil 24-hr 2 year Rainfa11=3.20" , Area (s� CN Description 3,529 89 Gravel roads, FiSG C 16,554 74 >75% Grass coyer, Good;HSG C ' 20,083 77 Weighted Average Tc Length Slope Velocity Capacity Description , (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, , Subcatchment PR40: To LHR Closed Drainage System Runoff = 5.37 cfs @ 12.09 hrs, Volume= 0.381 af, Depth= 1.40" , Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type II I 24-hr 2 year Rainfa11=3.20" ' Area (s� CN Description 31,811 98 impervious 1,097 98 ledge , 91,723 74 >75% Grass cover, Good, HSG C 17,511 76 Woods/grass comb., Fair, MSG C 142,142 80 Weighted Average ' , ' 09044-PR-rev3 Type 11124-hr 2 year Rainfa11=3.20" ' Prepared by VHB, Ina Page 6 HydroCAD R0 7.10 s/n 009234 �O 2005 HydroCAD Software Solutions LLC 4/17/2006 ' Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft} (ft/sec) (cfs) 4.9 50 0.0280 0.2 Sheet Flow, , Grass: Short n= 0.150 P2= 3.20" 0.1 20 0.0280 2.7 Shaliow Concentrated Flow, Unpaved Kv= 16.1 fps 0.1 87 0.5000 11.4 Shallow Concentrated Flow, ' Unpaved Kv= 16.1 fps 0.6 165 0.0500 4:5 Shallow Concentrated Ffow, Paved Kv= 20 3 fps ' 5.7 322 Total Reach DP1: ' Inflow Area = 2.578 ac, Inflow Depth = 124" for 2 year eyent Inflow 3.75 cfs @ 12.08 hrs, Volume= 0.267 af Outflow = 3.75 cfs @ 12:08 hrs, Volume= 0.267 af, Atten= 0%, Lag- 0.0 min ' Routing by Stor-Ind+Trans method, Time Span= 0:00-30.00 hrs, dt= 0.0� hrs ' Reaeh DP2: Inflow Area = O.fi94 ac, Inflow Depth = 1.09" for 2 year event ' Inflow = 0.87 cfs @ 12.09 hrs, Volume= 0.063 af OutFlow 0:87 cfs @ 12.09 hrs, Volume= 0.063 af, Atten= 0%, Lag=.0A min Routing.by Stor-lnd+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs , Reach_DP3: � Inflow Area = 7.977 ac, Inflow Depth = 0.41" for 2 year event Inflow 3.68 cfs @ 12;09 hrs, Volume= 0.271 af Outflow = 3.68 cfs @ 12.09 hrs, Volume= 0,271 af, Atten= 0%, Lag= 0.0 min , Routing by Stor-Ind+Trans method,Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Reach DP4: , Inflow Area = 3.263 ac, Inflow Depth = 1.40" for 2 year event Inflow = 5.37 cfs @ 12.09 hrs, Volume= 0.381 af , Outflow = 5.37 cfs @ 12.09 hrs, Volume= 0.381 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs , , ' ' , 09044PR-rer/3 Type II! 24-hr 2 year Rainfa11=3.20" ' Prepared by VHB, Inc. Page 7 HydroCAD R0 7.10 5/n 001234 �O 2005 HvdroCAD Software Solutions LLC 4/17/2006 ' Reach DP5: (new Reach) Inflow Area = 8.�70 ac, Inflow Depth= 0.46" for 2 year event , Inflow = 4.55 cfs @ 12.09 hrs, Volume= 0.334 af Outflow 4.55 cfs @ 12.09 hrs, Volume= 0.334 af, Atten= 0°/a, .Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs ' Rond 3P: Fielti SSDP ' Inflow Area = 5.279 ac, Inflow Depth = 2.26" for 2 year everit Inflow 12.50 efs @ 12.12 hrs, Volume= 0.993 af Outflow = 1.72 efs @ 11.70 tirs, Volume= 0.993 af, Atten= 86%,.Lag= 0.0 min ' Discarded = 1:72 cfs @ 11.70 hrs, Volume= 0.993 af Primary 0.00 cfs @ 0.00 hrs, Vdlume= 0.000 af Routing by Stor-Ind meth.od, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs ' Feak Elev= 88.42' @ 12.74 hrs Surf.Area= 0.427 ac Storage= 0.327 af PIug-Flow detention time= 58.4 min calculated for 0.993 af(100% of inflow) Center-of=Mass det. time= 58.4 min ( 863.5-805.1 ) tVolume . Inveit Avail.Sto�aqe . Storaqe Des�ription #1 87.00' 0.451 af 4.75'W x 7.42'L x 4:00'N-Prismatoid x 550 ' 1.708 af Overail - 0.580 af Embetlded - 1.128 af x 40.0% Voids #2 88.00' 0:580 af 44.6"W x 30:0"M x 7.12'L StormTecfi SG740 x 550 Ins'ide #1 1.031 af Total Available Storage ' Device Routinp Invert Outlet Devices #1 Primary 86:70' 18:0" x 82.0' long Gulvert RCP,sq.cut end projecting, Ke= 0:500 Outlet invert= 8620' S= 0.0061 'P Cc=0.900 n= 0.013 ' #2 Deviee 1 88.50' 1.25`W x 0:33' H Vert. OrificelGrate C= 0.600 #3 Device 1 89.50' 2.00'W x 1.00' H Vert. O�ificelGrate C= 0.600 #4 Discarded 0.00' 4.000 inlhr Exfiltration over Surface area , Discarded OutFlow Max=1.72 cfs @ 11.70 hrs HW=87.04' (Free Discharge) �4=6cfiltcation (Exfiltration Controls 1.72 cfs) , Primary OufFlow Max=0.00 cfs @ 0.00 hrs HW=87.00' (Free Discharge) t-�Culvert (PaSses 0.00 cfs of 0.38 cfs potentiai flow) 2=0rifice/Grate ( Controis 0.00 cfs) 3=0rifice/Grate ( Contrqls 0.00 cfs) , , ' � , ' , �� Vanasse Hangen Brustlin,Inc. , 10-Year Storm Event- Proposed ' ' ' ' ' ' ' , ' ' ' ' 1 , 1 , L\09044.Op\reportr\Drair�ageReport\AprJ2006\09044DrvwgeReport-Final.doc . ' ' 09044-PR-rev3 Type 11124-hr 10 year Rainfal1=4.60" ' Prepared by VHB, Inc. Page 8 �droCADOO 7.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17/2006 , Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Sforvind+Trans method - Pond routing by Stor-Ind method , S�bcatchment PR10:.To Fond Runoff Area=79,474 sf Runoff Depth=2.13" Flow Length=140' Tc=5.4 min CN=75 Runoff=4.63 cfs 0.324 af � Subcatchment PR17: Runoff Area=32,818 sf Runoff Depth=2.81" Tc=5.0 min CN-83 Runoff=2.57 cfs 0.177 af ' Subcatchment PR20: To LHR Runoff Area=30,217 sf Runoff Depth=2.13" Flowiength=139' Tc=5.3 min CN=75 Runoff=1.77 cfs 0.123 af ' Subcatchment PkY30: Runoff Area=77,805 sf Runoff D@pth=1.97" Tc=5.0 min CN=73 Runoff=4.23 cfs 0.293 af Subcatchment PR31: To.SSDI Runoff Area=229,938 sf Runoff Depth=3.59" ' Flow Length=772' Tc=8.8 min CN=91 Runoff=19.49.cfs 1.581 af Su6catchment PR32: Runoff"Area=19,632 sf Runoff Depth=3.39" ' FIQw Length=470' Tc=7.3 min CN=89 Runoff=1.67 cfs 0.127 af Su6cafehment PR33: Runoff Area=20,0$3 sf Runoff Depth=2.29" ' Tc=5.0 min CN=77 Runoff=1.28 cfs 0.088 af SubcatchmenbPR40:To CHR Glosed Drainage System Runoff Area=142,142-sf Runoff Depth=2.55" Flow Length=322' 7c=5.7 min CN=80 Runoff=9.86 cfs 0.693 af , Reaeh QP1: inflow=7.19 cfs 0 500 af Outflow=7.19 cfs 0.500 af tReach DP2: Inflow=1.77 cfs 0.123 af Outflow=1.77 cfs 0.123 af , Fteach DP3: Inflow=7.13 cfs 0.679 af Outflow=7.13 cfs 0.679 af tReach DP4: Inflow=9.86 cfs 0.693 af Outflow=9.86 cfs 0.693 af , Reach DPS: (new Reach) Inflow=8.89 cfs 0.802 af Outflow=8.89 cfs 0.802 af , Pond 3P: Field SSDP Peak EIev=89.09' Storage=0.560 af Inflow=19.49 cfs 1.581 af Discarded=1.72 cfs 1.412 af Primary=1.28 cfs 0.170 af Outflow=3.00 cfs 1.581 af Total Runoff Area=74.511 ac Runoff Volume=3.406 af Average Runoff Depth=2.82" , ' , . 1 09044-PR-rev3 Type 1f124-hr?0 year Rainfall=4:60" ' Prepared by VHB, Inc. Page 9 HydroCAD07.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17l2006 ' Subcatchment PR10: To Pond Runoff = 4.63 cfs @ 12.08 hrs, Volume= 0.324 af, Depth= 2.13" 1 Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 10 year Rainfa11=4.60" ' Area (s� CN Description 21,260 76 Woods/grass comb., Fair, HSG C 58,214 74 >75% Grass cover, Good, HSG C ' 79,474 75 1Neighted Average Tc Length Slope Velocity Capacity Description � (min) (feet) (ft/ft) (ft/sec) (cfs) 5.1 50 0.025.0 0.2 Sheet Ftow, Grass: Shoit n= 0.150 P2= 3.20" 0.2 30 0.0250 2.5 Shallow Concentrated Flow, ' Unpaved Kv= 16.1 fps 0:1 60 0.5000 •11.4 Shailow Concentrafed Flow, Unpaved Kv= 16.1 fps ' S.4 140 Total Subcatchment PR11: ' Runoif = 2.57 cfs @ 12.07 hrs, Volume= 0.177 af, Depth= 2.81" ' Runoff by.SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs • Type I1124-hr 10 year Rainfal1=4.60" Area(sfl CN Description ' ' 12,042 98 Raved parking & roofs 20,776 74 >75% Grass cover, Good;HSG C 32,818 83 Weighted Average , Tc Length 81ope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) � , 5.0 Direct Entry, Subcatchment PR20: To LNR ' Runoff = 1.77 cfs @ 12.08 hrs, Volume= 0.123 af, Depth= 2.13" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs ' Type III 24-hr 10 year Rainfa11=4.60" Area (s� CN Description , 6,558 74 >75% Grass cover, Good, HSG C 21,275 73 Woods, Fair, HSG C 2,384 98 Ledqe 30,217 75 Weighted Average 1 ' 1 09044PR-rev3 T,ype !(124-hr 10 year Rainfa11=4.60" , Prepared by VHB, Inc. Page 10 HydroCAD07.10 s!n 001234 02005 HVdroCAD Software Solutions LLC 4/17/2006 , Tc Length Slope Velocity Capacity Description _ (min) (feet) (ft/ft) (ft/sec} (cfs) , 5.1 50 0.1800 0.2 Sheet F1ow, Woods: Light underbrush n= 0:400 P2= 320" 02 89 0.1800 6.8 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps , 5.3 139 Total Subcatchment PR30: ' Runoff = 4.23 cfs @ 12.08 hrs, Volume= 0293 af, Depth= 1.97" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 10 year Rai�fa11=4.60" Area.(sfl CN Description , 77,805 73 Woods, Fair, HSG C Tc Length Slope Velocity Capacity Description � �mip) (feet) (ft/ft� (ft/sec) (cfs) � 5.0 Direct Entry, ' Subcatchment PR31: T� SSDI Runoff = 19.49 cfs-@ 12.12 hrs, Volume= 1.581 af, Depth= 3.59" , Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 10 year Rainfa11=4.60" ' Area,(sfl. CN Description 57,380 98 Building 101,781 98 Paved-roads w/curbs &sewers , 70,777 74 >75% Grass cover, Good, HSG C 229,938 91 Weighted Average , Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.4 50 0.0100 0.1 Sheet Flow, Grass: Sliort n= 0.150 P2= 3.20" ' 0.7 70 0.0100 1.6 Shailow Concentrated Flow, Unpaved Kv= 16.1 fps 0.2 40 0.0200 2.9 Shallow Concentrated Flow, ' Paved Kv= 20.3 fps 0.5 612 0.1000 20.4 35.99 Circular Channel (pipe), Diam= 18.0" Area= 1.8 sf Perim=4.7' r= 0.38' n= 0.012 8.8 772 Total 1 1 . ' , 09044-PR-rev3 Type 11124-hr 10 year Rainfa11=4.60" ' Prepared by VHB, Inc. Page 11 HydroCAD�7.10 s!n 001234 OO 2005 HVdroCAD Software Solutions LLC 4/17/2006 j , Subcatchment PR32; Runoff = 1.67 cfs @ 12.10 hrs, Volume= 0.127 af, Depth= 3.39" , Runoff by SCS TR-20 method, 11H=SCS, Time Span= OAO-30.00 hrs, dt=0.01 hrs Type ill 24-hr 10 year Rainfal1=4.60" ' Area (s� CN Description 7,534 74 >75% Grass cover, Good, HSG C 12,098 98 Paved parkinq & roofs , 19,632 89 Weighted Average Tc Length Slope Velocity Capacity Description , (min) (feet} (ft/ft) (ft/sec) (cfs) 5.1 50 0.0250 0:2 Sheet Flow, Grass: Short n= 0.150 P2= 320" , 2.2 420 0.0250 3.2 Shallow Concentreted Flow, ' _ Paved Kv= 20 3 fps 7.3 470 Totai ' Subcatehment RR33: Runoff = 1.28 cfs @ 12.08 hrs, Volume= 0.088 af,-Depth= 2.29" ' Runoff by SCS TR-20 method, UH=SGS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 10 year Rainfa11=4.60" , Area (s� . _ GN. Deseription 3,529 89 Gravel roads, HSG C 16;554 74 >75% Grass cover, Good, HSG C ' 20,083 77 Weighted Average Tc Length Slope Velocity Capacity Description ' (min) (feet) . (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, ' Subcatchment PR40: To LHR Glosed Drainage System Runoff = 9.86 cfs @ 12.08 hrs, Volume= 0.693 af, Depth= 2.55" ' Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type 11124-hr 10 year Rainfa11=4.60" ' Area (sfl CN Description 31,811 98 impervious 1,097 98 ledge ' 91,723 74 >75% Grass cover, Good, HSG C 17,511 76 Woods/qrass comb. Fair HSG C 142,142 80 Weighted Average ' ' �'� ' ' 09044-PR-rev3 Type IlI 24-hr 10 year Rainfall=4.60" ' Prepared by VHB, Inc. Page 12 HydroCAD�7.10 s/n 001234 O 2005 HydroCAD Software Solutions LLC 4/17/2006 � Tc Length Slope Velocity Capacity Description (min} (feet) (ft/ft) (ft/sec) (cfs) 4.9 50 0.0280 0.2 Sheet Flow, ' Grass: Short n=0.150 P2= 3.20" 0.1 20 0.0280 2.7 Shallow ConcenYrated Flow, Unpaved Kv= 16.1 fps 0.1 87 0.5000 11 A Shallow Concentreted Flow, � Unpaved Kv= 16.1 fps 0.6 165 0.0500 4.5 Shallow Goncentrated Flow, Paved Kv= 20 3 fps � 5.7 322 Total Reach DP1: � Inflow Area = 2.578 ac, Inflow Depth = 2.33" for 10 year event Inflow 7.19 cfs @ 12.08 hrs, Volume= 0.500 af Outflow = 7.19 cfs @ 12.08.hrs, Volurrie= 0.500 af, Atten= 0%, Lag= 0.0 min , Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs ' Reach DP2: Inflow Area = 0.694 ac, Inflow DePth = 2.13" for 10 year event � Inflow _ 1.77 cfs @ 12.08 hrs, Volume= 0.123 af Outflow 1.77 cfs @ 12.08 hrs, Volume= 0.123 af, Atten= 0%, Lag= 0,0 min Routing by Sfor-Ind+Trans method,Time Span= 0.00-30.00 hrs, dt= 0.01 hrs 1 Reach DP3: � Inflow Area = 7:977 ac, Inflow Depth = 1.02" for 10 year event . Inflow 7.13 cfs @ 12.08 hrs, Volume= 0.679 af Outflow = 7.13 cfs @ 12:08 hrs, Volume= 0.679 af, Atten= 0%, Lag= 0.0 min ' Routing by Stor-Ind+Trans method, Time Span= 0.0030.00 hrs, dt= 0.01 hrs Reach DP4: � Inflow Area = 3.263 ac, Inflow Depth = 2.55" for 10 year event Inflow = 9.86 cfs @ 12.08 hrs, Voiume= 0.693 af � Outflow = 9.86 cfs @ 12.08 hrs, Volume= 0.693 af, Atten=0°/a, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � � 1 ,� � 09044-PR-rev3 7"ype 1ll 24-hr 10 year Rainfa!l=4.60" � Prepared by VHB, Inc. Page 13 HydroCADC�7.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17/2006 � Reach DPS: (new Reach) � Inflow Area = 8.670 ac, Inflow Depth = 1.11" for 10 year event � Inflow = 8:89 cfs @ 12.08 hrs, Volume= 0.802 af Outtlow 8.89 cfs @ 12.08 hrs, Volume= 0.802 af, Atten= 0°/a, Lag= 0.0 min Routing by Stor-Ind+Trans method,Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � Pond 3P: Field SSDP � Inflow Area_ 5.279 ac, Inflow Depth = 3.59" for 10 year event Iriflow 19.49 cfs @ 12.12 hrs, Volume= 1.581 af Outflow = 3.00 cfs @ 12.66 hrs, Volume= 1.581 af, Atten= 85%, Lag= 32.2 min � Discarded = 172 cfs @ 11.40 hrs, Volume= 1.412 af Primary 128 cfs @ 12.66 hrs, Volume= 0.170 af Routing by Stor-Ind method, Time Span= 0.00-3�.00 hrs, dt= 0.01 hrs � Peak Elev= 89.09' @ 12.66 hrs Surf:Area= 0:427 ac Storage= 0.560 af Plug-Flow detention time= 83.1 mi� calculated for 1:581 af(100% of inflow) Center-of-Mass det. time= 83.0 min ( 875.2 - 792.2 ) � Volume Invert . Avail Storacte Storaqe Description #1 87.00' 0:451 af 4.75'W x 7.12'L x 4:00'H Prismatoid x 550 1.708 af Overall - 0.580 af Embedded = 1.128 af x 40.0%Voids �, #2 88.00' 0,580 af 44.6"W x 30.0"H z 7.12'L StorrriTech SG740 x 550 Inside #1 1.031 af Total Available $torage � Device Routinq Invert Outlet Devices #1 Primary 86.70' 18.0" x 82.0' long Culdert RCP, sq.cut end projecting, Ke= 0.500 Outlet Invert= 8620' S= 0.0061 '/' Cc= 0;900 n= 0:013 ' #2 Device 1 88.50' 1.25 W x 0:33' W Vert. Orifice/Grate C= 0.600 #3 Device 1 89.50' 2;00'W�e1.00' H Veit. OrificelGrete C= 0.600 #4 Discarded 0.00' 4.OU0 in/hr E�Itration over Surtace area � Disearded OutFlow Max=172 cfs @ 11.40 hrs HW=87.04' (Free Discharge) � �4=E�iltration (Exfiltretion Controls 1.72 cfs) � Rrimary OutFlow Max=1.28 cfs @ 12.66 hrs HW=89.09' (Free Discharge) L�Culvert (Passes 1.28 cfs of 9.64 cfs potential flow) 2=0rifice/Grate (Orifice Controls 1.28 cfs @ 3.1 fps) 3=0rifice/Grate ( Controls 0.00 cfs) � ;�. � ' \� �'� vanasse Ha�,gea snustlu,,Inc . . �' � 25-Year Storm Event- Proposed � � � �� ' � r � � � � � � � r l � L\09049.00\reports\DrairugeReportVpri12006\09094Drai,ugeReport-final.doc � � 09044-PR-re�/3 . Type 1I124-hr 25 year Rainfa11=5.40" , Prepared by VHB, Inc. Page 14 HydroCADO 7.10 s/n 001234 �O 2005 HvdroCAD Software Solutions LLC 4/17/2006 ' � Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 poiMs Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Storvind method � Subcatchment PR70: To Pond Runoff Area=79,474 sf Runoff Depth=2.78" Flow Length=140' Tc=5.4 mi❑ CN=75 Runoff=6.07 cfs 0.422 af � Subcatchment PR11: Runoff Area=32,818 sf Runoff Depth=3.54" Tc=5.0 min CN=83 Runoff=3.22 cfs 0.222 af �� $ubcatchment PR20: To LHR Runoff Area=30217 sf Runoff Depth=2.78" Ftow Length=139' Tc=5.3 min CN=75 Runoff=2.32 cfs 0.161 af Subeafchment FR30: Runoff Area=77,805 sf Runoff Depth=2.60" �, Tc=5.0 min CN=73 Runoff=5.62 cfs 0.387 af �� Subcatchment PR31: To SSDI Runoff Area=229,938 sf Runoff Depth=4.37" Flow Length=772' Tc=8.8 min CN=91 Runoff=23.46 cfs 1.923 af Subcatchmettt PR32: Runoff Area=19,632 sf Runoff Depth=4:16" ��, Flow.Length=470' Tc=7.3 min CN=89 Runoff=2.03 cfs 0.156 af Subcatchment PR33: Runoff Atea 20,083 sf Runoff Depth=2.96" ;� 1"c=5.0 min CN=77 Runoff=1.66 cfs 0.114 af Subcatchment PR40: To LNR Closed-0reinage System Runoff Area=142,142 sf Runoff Depth=324" � Flow Length=322' Tc=5.7 min CN=80 Runoff=12.54 cfs 0.882 af Reach DP1: InFlow=9.27 cfs 0.644 af � Outflow=927 cfs 0.644.af Reach DP2: Inflow=2.32 cfs 0.161 af Ouiflow=2.32 cfs 0.16'i af � Reach DP3: Inflow=9:24 cfs 0:989 af Outflow=9.24 cfs 0.989 af � Reach DP4: Inflow=12.54 cfs 0.882 af Outflow=12.54 cfs 0.882 af I Reach DP5: (new Reach) Inflow=11.56 cfs 1.150 af Outflow=11.56 cfs 1.150 af ,� Pond 3P: Fieid SSDP Peak Elev=89.51' Storage=0.697 af Inflow=23.46 cfs 1.923 af Discarded=1.72 cfs 1.590 af Primary=1.83 cfs 0.333 af Outflow=3.56 cfs 1.923 af � Total Runoff Area=14.511 ac Runoff Volume=4.267 af Average Runoff Depth =3.53" � . � � 09044-PR-rev3 Type 11124-hr 25 year Rainfall=5.40" �' Prepared by VHB, Inc. Page 15 HydroCADO 7.1D s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17(2006 � Subcatchment PR10: To Pond Runoff = 6.07 efs @ 12.08 hrs, Volume= 0.422 af, Depth= 2.78" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.0030.00 hrs, dt= 0.01 hrs Type III 24-hr 25 year Rainfa11=5.40" � Area (s� CN Description 21,260 76 Wo.ods/grass comb., Fair, HSG C 58,214 74 >75% Grass_cover, Good, HSG C 79,474 75 Weighted Average � Tc Length Slope Velocity Gapacity Description (min) (feet) (Wft) (ft/see) (cfs) �, 5.1 50 0.0250 02 Sheet Flow, Grass: Short n= 0.150 P2= 3.20" � 0.2 30 0,0250 2.5 Shallow Concentrated Flow, Unpaved Kv= 16.1fps 0.1 60 0:5000 11.4 Shallow Concentrated Flow, Unpaved Kv= 16 1 fps - � 5:4 1.40 Total Subcatchment PR11: �� Runoff = 3.22 cfs @ 12:07 hrs, Volume= 0.222af, Depth= 3.54" � Runoff by SCS TR-20 method,UH=SCS, Time Spa�= 0.00-30.00 hrs, dt= 0.01 hts Type lll 24-hr 25 year Rainfa11=5.40" Area (sfl CN Deseription � 12,042 98 Paved pa�king & roofs 20,776 74 >75% Grass cover, Good, NSG C 32,818 83 Weighted Average '� Tc Length Slope Velocity Capacity Descripiion (min) (feet) (ft/ft) (ft/sec) (cfs) � 5.0 Direct Entry, Subcatchment PR20: To LNR � Runoff = 2.32 cfs @ 12.08 hrs, Volume= 0.161 af, Depth= 2.78" Runoff by SCS TR-20 method, UH=SCS, Time Span=0.0030.00 hrs, dt=0.01 hrs ,� Type III 24hr 25 yea� Rainfa11=5.40" Area (sfl CN Description 6,558 74 >75% Grass cover, Good, HSG C I � 21,275 73 Woods, Fair, HSG C 2,384 98 Ledqe 30,217 75 Weighted Average � � � . 09044-PR-�e�/3 Type f112�-hr 25 year Rainfall=5.40" I �� Prepared by VH6, Inc. Page 16 HydroCADO 7.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4/17/2006 � Tc. Length Slope Vetocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) � 5.1 50 0.1800 0.2 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 3.20" 0.2 89 0.1800 6.8 Shallow Concentrated Flow, Unpaved Kv= 16 1 fps � 5.3 139 Total Subcatehment PR30: , � Runoff = b.62 cfs @ 12.08 hrs, Volume= 0:387 af, Depth= 2.60" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs , Type 111 24-hr 25 year Rainfa11=5.40" �i \� Area (s� CN Description 77,805 73 Woods, Fair, HSG C Tc Length Slope Velocity Capacity Description � (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, � Subcatcliment PR31: To SSDI Runoff = 23.46 cfs @ 12.12 hrs, Volume= 1.-923 af, .Depth= 4:37" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0:00-30.00 tirs, dt= 0.01 hrs Type 111 24-hr 25 year Rainfa11=5:40" A�ea (s� CN Description ', �' 57;380 98 Building 101,781 98 Paved roads w/curbs &sewers I � 70,777 74 >75% Grass cover, Good, HSG C � 229;938 91 Weighted Average I � Tc Length Slope Velocity Capacity Description _ {min) (feet) (ft/ft) (ftlsec) (cfs) � 7.4 50 0.0100 0.1 Sheet Flow, Grass: Short n= 0.150 P2= 3.20" � 0.7 70 0.0100 1.6 Shallow Concentrated Flow, lJnpaved Kv= 16.1fps 0.2 40 0.0200 2.9 Shallow Concentrated Flow, ,� Paved Kv= 20.3 fps 0.5 612 0.1000 20.4 35.99 Circular Channel (pipe), Diam= 18.0" Area= 1.8 sf Perim=4.7' r- 0.38' n= 0 012 8.8 772 Total �' ,� � � 09044-PR-rev3 Type 11124-hr 25 year Rainfall=5.40" ��. Prepared by VHB, Inc. Page 17 HydroCAD RO 7.10 s/n 001234 OO 2005 HVdroCAD Software Solutions LLC 4/17/2006 ' ' Subcatchment PR32: Runoff = 2.03 cfs @ 12.10 hrs, Volume= 0.156 af, Depth= 4.16" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 25 year Rainfa11=5.40" � Area (s� CN Description 7,534 74 >75% Grass cover, Good, HSG C 12,098 98 Paved parki'nq & roofs , � 19,632 89 Weighted Average Tc Length Slope Velocity Capacity Description � (min) (feet) (ftCft) (fUsec) (cfs) �� 5.1 50 OA250 0:2 Sheet Flow, Grass: Sfiort n= 0.150 P2=320" 22 420 0.0250 3.2 Shaliow Concentreted Flow, �� - - Paved Kv= 20 3 fps 7:3 470 7otal a � Subcatchment PR33: Runoff = 1.66 efs @ 12.08 hrs, Volume= 0.114 af, Depth= 2.96" '� Runoff by SCS TR-20 methotl, UH=SCS;Time Span=0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 25 year Rainfall=5.40" �� Area (s� CN Descriptibn 3,529 89 Gravel roads, HSGC 16;554 74 >75% 6rass cover, Good, HSG C I � 20,083 77 Weighted Average Tc Length Slope Velocity Capacity Description � ,� (min) (feet) ' (ft/ft) (ft/sec) (efs) � � 5.0 Direct Entry Subcatchment PR40: ToiHR Closed Drainage System � Runoff = i2.54 cfs @ 12.08 hrs, Volume= 0.882 af, Depth= 3.24" � Runoff by SCS TR-20 m.ethod, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hcs' Type III 24-hr 25 year Rainfa11=5.40" ,� Area (sfl _ CN Description 31,811 98 impervious 1,097 98 ledge � 91,723 74 >75% Grass cover, Good, HSG C 17,511 76 Woods/qrass comb. Fair HSG C 142,142 80 Weighted Average � � ' � 09044PR-rev3 Type 11124-hr 25 year Rainfall=5.40" ' �� Prepared by VHB, Inc. Page 18 HydroCADO 7.10 s/n 001234 O 2005 HvdroCAD Software Solutions LLC 4l17/2006 Tc Length Slope Velocity Capacity Description ' �, _ (min) (feet) (ft/ft) (ft/sec) (cfs) 4.9 50 0.0280 0.2 Sheet Flow, , .� Grass: Short n= 0.150 P2= 3.20" 0.1 20 0.0280 2.7 Shallow Concentrated Flow, Unpaved Kv= 16.1 fps 0.1 87 0.5000 11.4 Shallow Concentreted Flow, � Unpaved Kv= 16.1 fps 0.6 165 0.0500 4.5 Shallow.ConcentraYed Flow, Paved Kv= 20 3 fps 5.7 322 Total � Reaeh DP1: � Inflow Area= 2.578 ac, Inflow Depth = .3.00" for -25 year eveM Inflow 927 cfs @ 12.08 hrs, Volume= 0.644 af Outflow = 927 cfs @ 12.08 hrs, Volume= 0.644 af, Atten= 0%, Lag= 0:0 min " �, Routing by Stor-Ind+frans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Reach DP2: � Inflow Area = 0.694 ac, Inflow Depth = 2.78" for 25 year event Inflow = 2;32 cfs @ 12.08 hrs, Volume= 0.16? af � Outflow = 2.32 cfs @ 12.08 hrs, Volume= 0.161 af, Atten= 0%, Lag= 0.0 min Fouting by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � Reach DP3: ', �' InflowArea = 7:977 ac, Inflow Depth = 1.49" for 25 year event , Inflow = 9:24 cfs @ . 12.08 hrs, Volume= 0.989 af � Outflow = 9.24 cfs @ 12.08 hrs, Volume= 0.989 af, Atten= 0%, Lag= 0.0 min '� Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0:01 hrs ', � Reach DP4: Inflow Area= 3.263 ac, Inflow Depth = 3.24" for 25 year event Inflow = 12.54 cfs @ 12.08 hrs, Volume= 0.882 af I � Outflow = 12.54 cfs @ 12.08 hrs, Volume= 0.882 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt=0.01 hrs � �` � '� ,�' 09044-PR-rev3 Type 11124-hr 25 year Rainfa11=5.40" � Prepared by VHB, ina Page 19 HydroCfiDO 7.10 s/n 001234 OO 2005 HvdroCAD Software Solutions LLC 4/17/2006 ' Reach DP5; (new Reach) Inflow Area = 8.670 ac, Inflow Depth = 1.59" for 25 year event � Inflow = 11.56 cfs @ 12.08 hrs, Volume= 1.150 af , Outflow 11.56 cfs @ 12.08 hrs, Volume= 1.150 af, ,Stten=0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30:00 hrs, dt= 0.01 hrs �' Pond 3P: Field SSDP Inflow Area = 5.279 ac, Inflow Depth = 4.37" for 25 year event �` Inflow = 23.46 cfs @ 12.12 hrs, Volume= 1.923 af Outflow = 3.56 cfs @ 12.66 hrs, Volume= 1.923 af, Atten= 85%, Lag= 32.4 min � Discarded _ 1.72 cfs @ 11:20 hrs, Volume= 1.590 af ' Primary 1.83 cfs @ 12.66 hrs, Volume= 0:333 af Routing by Stor-Ind method, Time Span=0.00-30.00 hrs, dt= 0.01 hrs � Peak Elev= 89.51' @ 12.66 hrs Surf.Area= 0.427 ac Storage= 0.697 af PIug-Flow detention time= 89.1 min calculated for 1.922 af(100% of inflow) Center-of-Mass det.time= 89.1 min( 876.0-786.9 ) � Volume _ Invert P,vail.Storaqe Storaqe Description � #1 87.00' 0.451 af 4.75'W x 7.12'L x 4.00'N Prismatoid x 550 � 1.708 af Overall -0.580 af Embedded = 1:128 af.x 40.0% Voids #2 88.00' 0;580 af 44.6"W x 30:0"H x 7.12'L StoemTeCh SC-740 x 550 Inside#1 1.031 af Total Available Storage � Device Routinq In4ert Outlet Devices #1 Primary 86.70' t8.0" x 82.0' long Culvert RCF, sq.cut end projeeting, Ke=0.500 Outiet Imert= 86.20' S= 0.0061 '/' Cc= 0.900 n= 0.013 �Z Device 1 88:50' 125'W x 0.33' H Vert. O�ifice/Gtate C= 0.600 �, #3 Device 1 89:50' 2:00'W x t.00' H Vert. Orifice/Grate C= 0.600 #4 Discarded 0.00' 4.000 in/hr Exfiltration over Surface area � Discarded OutFlow Max=1.72 cfs @ 1 LZO hrs HW=87.04' (Free Discharge) �=Exfiltration (Exfiltration Controls 1.72 cfs) � Primary OutFlow Max=1.83 cfs @ 12.66 hrs HW=89.51' (Free Discharge) t1=Culvert (Passes 1.83 cfs of 11.02 cfs potential flow) �2=0rifice/Grete (Orifice Controls 1.82 cfs @ 4.4 fps) 3=0rificelGrete (Orifice Controls 0.01 cfs @ 0.3 fps) � � � ` � � . ,� � ,m Vanasse I-Iangen Brustlixt,Lnc. � � 100-YearStorm Event- Proposed � � � � �� ,� 'I �� ' � � � ,� � � L\09099.00\reporls\DrainageReport�Apd2006\09094DrainageReport-final.doc � .� 09044-PR-rev3 Type IIl 24-hr 100 year Rainfa1/=6.60" � Prepared by VHB, Inc. Page 20 HydroCADO 7.10 s/n 001234 �O 2005 HydroCAD Software Solutions LLC 4/17l2006 Time span=0.00-30.00 hrs, dt=0.01 hrs, 3001 points �, Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method 1 Subcatchment PR10: To Pond Runoff Area=79,474 sf Runoff Depth=3:80" - Flow Length=140' Tc=5.4 min CN=75 Runoff=8.30 cfs 0.578 af � Subcatchment PR11: Runoff Area=32,818 sf Runoff Depth=4.65" Tc=5.0 min CN=83 Runoff=4.19 cfs 0.292 af Subcatchment PR20: To.LHR Runoff Area=30,217 sf Runoff Depth=3:80" ' � Flow Length=139' Tc=5.3 min CN=75 Runoff=3.17 cfs 0.220 af �i � Subcatchment PR30: Runoff Area=77,805 sf Runoff Depth=3.59" Tc=5.0 min GN=73 Runoff=7.80 cfs 0.535 af � Subcatchment RR31:To SSDI Runoff Area=229,938 sf Runoff Depth=5.55" Flow Length=772' Tc=8.8 min CN=91 Runoff=29:37 cfs 2:439 af Subcatchment PR32: Runoff Area=19,632 sf Runoff Depth=5.32" i � Flow Length=470' Tc=7.3 min CN=89 Runoff=2.56 cfs 0200 af Subcatchment PR33: Runoff Area=20,083 sf Runoff Depth=4.01" � Tc=5.0 min CN=77 Runoff=2.24 cfs 0.154 af 3ubcatchment PR40:To LHR CloSed Drainage System Runoff Area=142,142 sf Runoff Depth=:4.33" � Flow Length=32�' Tc=5] min CN=80 Runoff=16.62 cfs 1.177 af Reach DP1: Inflow=12.48 cfs 0.870 af Outflow=12.48 cfs 0.870 af � Reach DP2: Inflow=3.17 cfs 0220 af Outflow=3.17 cfs 0.220 af � Reach DP3i Inflow=12.82 cfs 1:527 af Outflow=12.82 cfs 1.527 af � R08ch DP4: Inflow=16.62 cfs 1.177 af � Outflow=16.fi2 cfs 1.177 af � Reach DP5: (new Reach) Inflow=15.97 cfs 1.746 af Outflow=15.97 cfs 1.746 af � Pond 3P: Field SSDP Peak EIev=90.09' Storage=0.863 af Inflow=29.37 cfs 2,439 af Discarded=1.72 cfs 1.801 af Primary=5.32 cfs 0.638 af OutFlow=7.04 cfs 2.439 af � Total Runoff Area= 14.511 ac Runoff Volume=5.594 af Average Runoff Depth=4.63" � � � 09044-PR-re�/3 Type !ll 24-hr 100 year Rainfa//=6.60" � Prepared by VHB, Inc. Page 21 HydroCADRO 7.10 s/n 001234 �0 2005 HydroCAD Software Solutions lLC 4/17/2006 Subcatchment PR10: To Pond � Runoff = 8.30 cfs @ 12.08 hrs, Volume= 0.578 af, Depth= 3.80" � Runoff by SCS TR-20 method, UH=SCS, Time Span=0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfa11=6.60" Area (s� CN Description � 21,260 76 Woods/grass comb., Fair, HSG C 58,214 74 >75% Grass cover, 600d, HSG C 1 79,474 75 Weighted Average Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) �, 5:1 50 0.0250 0.2 Sheet Flow, Grass: Short n= 0.150 P2= 320" 0.2 30 0'.0250 2.5 Shallow Concentrated Ffow, � Unpaved Kv= 16:1`fps 0.1 60 0.50�0 11.4 Shallow Concentratetl Flow, Unpaved Kv= 16 1 fps � 5.4 140 'Total Subcatchment PR11: MRunoff = 4.19 cfs @ 12.07 hrs, Volume= 0.292 af, Depth= 4.65" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs,dt= 0.01 hYs Type III 24-hr 100 year Rainfa11=6.60" Area (s� CN Description , 12,042 98 Paved parking & roofs 20,776 74 >75% Grass cover, Good, IiSG G 32,818 83 Weighteii Average � Tc Length Slope Velocity Capaeity Description (min) (feet) (ft/ft) (ft/sec) .(cfs) � 5.0 . Direct Entry, Subcatchment PR20: To LHR �I � Runoff = 3.17 cfs @ 12.08 hrs, Volume= 0.220 af, Depth= 3.80" Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.0030.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfa11=6.60" � Area (s� CN Description � 6,558 74 >75% Grass cover, Good, HSG C 21,275 73 Woods, Fair, HSG C 2,384 98 Ledqe 30,217 75 Weighted Average ' � � � 09044-PR-rev3 Type 11124-hr 100 year Rainfa11=6.60" � Prepared by VHB, Inc. Page 22 HydroCADO 7.10 s/n 001234 O 2005 HydroCAD Software Solutions LLC 4/17/2006 � Tc Length Slope Velocity Capacity Description _ (min) (feet) (ft/ft) (ft/sec) (cfs) 5.1 50 O.i800 02 Sheet Fiow, � Woods: Light underbrush n= 0.400 P2= 320" 0.2 89 0.1800 6.8 Shallow Concentrated Flow, Unpaved Kv= 16 1 fps � 5.3 139 Total � Subcatchment PR30: � Runoff = 7.80 cfs @ 12.08 hrs, Volume= 0.535 af, Depth= 3.59" � Runoff bySCS TR-20 method, UH=SCS,Time Span= 0.00-30.00 hrs, dt= 0.01.hrs Type III 24-hr 100 year Rainfa11=6.60" Area (s� CN Description � 77,805 73 Woods, Fair, HSG C Te Length Slope Velocity Gapacity Description � (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 DirecE Entry, � Subcatchment PR31: To SSDI Runoff = 29.37 efs @ 12.12 hrs, Volume= 2:439 af, Depth= b.55" '� Runoff by SGS.TR-20 method, UH=SCS, Time Span= 0.0030.00 hrs, dt= 0:01 hrs Type III 24-hr 100 year Rainfa11=6.60" Area (sfl CN Desc�iption ' 57,380 98 Building 101,781 98 -Paved roads w/curbs.&-sewers � 70,777 74 >75% Grass cover, Good, HSG C 229;938 91 Weighted Averu�e Tc Length Slope Velocity Capacity Description ' � _jmin) (feet) (ft/ft) (ftlsec) (cfs) 7.4 50 0.0100 0.1 Sheet Flow, Grass: Short n= 0.150 P2= 3.20" � 0.7 70 0.0100 1.6 Shailow Concentrated Flow, Unpaved Kv= 16.1 fps 0.2 40 0.0200 2.9 Shallow Concentrated Flow, Paved I<v= 20.3 fps � 0.5 612 0.1000 20.4 35:99 Circular Channel (pipe), Diam= 18.0" Area= 1.8 sf Perim=4.7' r- 0.38' n= 0.012 8.8 772 Total 1 �' i ! 09044-PR-rev3 Type llf 24-hr 100 year Rainfall=6.60" Prepared by VHB, fnc. Page 23 I' H droCADO 7.10 s!n 001234 0 2005 H droCAD Software Solutions LLC 4/17/2006 Y y , � Subcatchment PR32: Runoff = 2.56 cfs @ 12.10 hrs, Volume= 0.200 af, Depth= 5.32" � Runoff by SCS TR-20 method,UH=SCS, Time Span= 0.0030.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfa11=6.60" � __ Area (s� CN Description 7,534 74 >75% Grass cover, Good, HSG C 12,098 98 Paved parkinq & roofs 19,632 89 Weighted Average � Tc Length Slope Velocity Capacity Description � _(min) (feet) (ft/ft) (ft/sec) (cfs) , 5.1 50 0.0250 0.2 Sheet F�ow, Grass: Short n= 0.150 P2= 3.20" 2.2 420 0.0250 3.2 Shallow Concentrated Flow, I, � _ Paved Kv= 20 3 fps 7.3 470 Total � Subcatchment PR33: Runoff = 2.24 cfs @ 12:OThrs, Volume= 0.154 af, Depth= 4.01" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfa11=6.60" � _ Area (s� CN Description 3,529 89 Gravel roads, HSG C 16,554 74 >75% Grass cover, Good;HSG C I20,083 77 Weighted Average Tc Length Slope Velocity Capacity DescripCion � (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, � 3ubcatchment BR40: To LHR Closed Dreinage System Runoff — 16.62 cfs @ 12.08 hrs, Volume= 1.177 af, Depth= 4.33" � Runoff by SCS TR-20 method, UH=SCS, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs Type III 24-hr 100 year Rainfall=6.60" I�I � Area (s� CN Description 31,811 98 impervious 1,097 98 ledge I � 91,723 74 >75% Grass cover, Good, HSG C 17,511 76 Woods/qrass comb. Fair HSG C 142,142 80 Weighted Average � � � 09044-PR-rev3 Type Ill 24-hr 100 year Rainfa11=6.60" � Prepared by VHB, Inc. Page 24 HydroCADO 7.10 s/n 001234 0 2005 HvdroCAD Software Solutions LLC 4/17/2006 ' Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.9 50 0.0280 0:2 Sheet Fiow, � Grass: Short n= 0.150 P2= 3.20" 0.1 20 0.0280 2.7 Shallow Concentrated Flow, Unpaved Kv= 16.1fps 0.1 87 0.5000 11.4 Shallow Concentrated Flow, ' � Unpaved Kv= 16_1fps 0.6 165 0.0500 4.5 Shallow Goncenttated Flow, Paved Kv= 20 3 fps ' 5J 322 Total Reaeh DP1: ' � Inflow Area = 2:578 ac, Inflow Depth = 4.05" for 100 year event � Inflow = 12.48 cfs @ 12.08 hrs, Volume= 0.870 af Outflow = 12:48 cfs @ 12.08 hrs, Volume= 0.870 af, Atten= 0%, Lag= 0.0 min � Routing"by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt=O.OT hrs � Reach DP2: Inflow Area = 0.694 ac, Inflow Depth = 3.80" for 100 year event � inflow = 3.17 cfs.@ 12.08 hrs, Volume= 0.220 af Outflow 3.17 cfs @ 12.08 hrs, Volume= 0.220 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs 1 Reach DP3: ' InflowArea = 7.977 ac, Inflow Depth = 2.30" for 100 year event Inflow 12.82 cfs @ 12.09 hrs, Volume= 1:527 af Outflow = 12.82 cfs @ 12.09 hrs, Volume= 1.527 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Ind+Trans method, Time Span=0.00-30.00 hrs, dt= 0.01 hrs � Reach DP4: Inflow Area = 3.263 ac, Inflow Depth= 4.33" for 100 year event Inflow = 16.62 cfs @ 12.08 hrs, Volume= 1.177 af � Outflow = 16.62 cfs @ 12.08 hrs, Volume= 1.177 af, Atten=0%, Lag= 0.0 min Routi�g by Stor-Ind+Trans method, Time Span= 0.00-30.00 hrs, dt= 0.01 hrs � � � � � � 09044-PR-rev3 Type 11124-hr 100 year Rainfal(=6.60" � Prepared by VHB, Inc. Page 25 HydroCADO 7.10 s/n 001234 OO 2005 HydroCAD Software Solutions LLC 4l17/2006 � Reach DP5: (new Reach) Inflow Area = 8.670 ac, Inflow Depth = 2.42" for 100 year event � Inflow = 15.97 cfs @ 12.09 hrs, Volume= 1.746 af Outflow 15.97 cfs @ 12.09 hrs, Volume= 1.746 af, Atten= 0%, Lag= 0.0 min � Routing by Stor-Ind+Trans method, Time Span= 0.00-30.00.hrs, dt= 0.01 hrs - Pond 3P: Field SSDP 1 inflow Area = 5.279 ac, Inflow Depth = 5.55" for 100 year event Inflow 29.37 cfs @ 12.12 hrs, Volume= 2.439 af Outflow = 7.04 cfs @ 12.54 hrs, Volume= 2.439 af, Atten= 76%, Lag=25.0 min � Discarded = 1.72 cfs @ 10.69 hrs, Volume= 1.801 af , Primary 5.32 cfs @ 12.54 hrs, Volume= 0.638 af � Routing by Stor-Ind method,Time Span=0.00-30.00 hrs, dt= 0.01 hrs Peak Elev= 90.09' @ 12.54 hrs Surf.Area=0.427 ac Storage= 0.863 af Plug-Flow detention time= 88.2 min calculated for 2:439 Af(100% of inflow) Center-of-Mass det. time=88,1 min ( 868.9- 780.7 ) � Volume Inveit Avail:Storaqe Storaqe Description #1 87.00' . 0.451 af 4.75'W x 7.12'Lx 4:00'N R�ismatoid x'550 � 1 708af Overall - 0.580 af Embedded - 1.128•af x 40.0%Voids #2 88.00' 0.580 af 44.6"W x 30.0"H=x 7.12'L StormTeeh SC-740 x 550 Inside#1 1.031 af Total Availabie Storage � Device Routinq Invert Outiet Devices #1 Primary 86J0' 18.0" x 82.0'long Culvert RCP, sq.cut end projecting, Ke= 0.500 Outlet invert= 86.20' S= 0.0061 '/' Cc= 0.900 n= 0.013 � #�2 Device 1 88.50' 1.25`W x 0.33':H Vert. OrificelGrate C= 0:600 #3 Device 1 89:50' 2.00'W x 1.00' H Vert. Orifice/Gtate C= 0.600 #4 Discarded 0.00' 4.000 in/hr Eufiltration over Surface area � Discarded OutFlow Max=1.72 cfs @ 10.69 hrs HW=87.04' (Free Discharge) �4=E#iltration (Exfiltration Controls 1.72 cf"s) Primary OutFlow Max=5.32 cfs @ 12.54 hrs HW=90.09' (Free Discharge) � t--1=Culyert (Passes 5.32 cfs of 12.67 cfs potential flow) �2=0rificelGrate (Orifice Controls 2.37 cfs @ 5:8 fps) 3=0rifice/Grate (Orifice Controls 2.94 cfs @ 2.5 fps) � � , � � � vl� Vanasse Hangen Brustlin,Inc. 1 StormCAD Analysis � i ! � �t � � ! l ! � T � i � t 1 1 1 L\0909900\reports\DraiwgeReport\Apri12006\p90A4DralnageReporD(inaldoc � Scenario: Base 1 -StormCAD Table � From To Inlet Upstream Upstrea System Total Velocity Pipe Mannings Length Full Slope Upstream Downstrea Upstream Upstream DownsVeam Label - _ No. No. Ra[ional InletArea System inlensi�y System In Dia. n (ft) Capadly (tt/R) Invert invert Rim Hydraulic Hydraulic. Ccefficien� � A CA 1 Flow (fUs) (c(s) Elevation Elevafion Elevation Grade Line Grade C (aaes) (aaes) (inmr) (cis) (tq (H) (fl) (fl) (fr) CB D2 DMH DA 0.50 0.33 0.16 6.00 0.99 3.t9 12 inch 0.013 16.00 3.98 012500 55.60 55.40 59.60 56A2 54.85 PCD2 ' � � � � CB D7 DMH D7 0.50 026 0.13 6.00 OJS 2_96 12 inch 0.013 13.00 4.42 075385 55.60 55.40 59.60 55.97 54.85 P-CD7 - � � . DMH D2 DMH Di N/A N!A 029 5.98 172 3.82 12 inch 0.013 '121.00 7.93 049587 61.40 55.40 65.80 61.96 54.85 P-DD2 DMH D3 DMH D2 N/A N/A 029 5.99 1 J2 3.82 12 inch 0.013 78.00 8.07 051282 65.50 61.50 70.10 66.06 62.08 -P-DD3 - . � DCB D3 DMH D3 0.43 0.42 0.18 6.00 1.10 329 12 inch 0.013 20.00 8.73 060000 67.10 65.90 71.80 67.54 6620 P-CD3 DCB D4 DMH D3 0.52 020 0:10 6.00 0.62 2.77 72 inch 0.013 25.00 7_B7 048000 6L10 65.90 71.80 67.43 6620 -P-CD4 ' WQD Di EX DMH 1 N!A N/A 0.58 5.95 3.47 5.17 12 inch 0.013 28.00 12.77 128577 5370 50.10 58_60 54.50 50.00 �P-WDt DMH Dt WQD D1 NfA N/A 0.58 5.95 3.47 5.17 12 inch 0.013 15.00 4.11 013333 54.00 53.80 59.80 54.80 54.62 P-DD7 � � DMH B4 DMH 65 N/A N!A 275 575 �15.94 6.37 24 inch 0.012 173.00 77.68 005202 - 89.40 88.50 97.70 90.89 90.01 P-D84 BLOG B2 DMH B4 0.90 0.96 0.86 6.00 521 6.86 72 inch 0_072 78.00 8.63 050000 94.90 91.00 99.90 95.83 91.66 P-R62 CB B4 DMH 64 0.60 Q28 0.17 6.00 1.02 321 12 inch 0.012 25.00 3.45 008000 9170 91.50 95J0 92.12 91.66 P-C64 GB B3 DMH B3 0.82 025 0.20 6.00 123 � 3.41 12 inch 0.012 51.00 3.82 009804 9220 91.70 9620 92.67 92.04 P-CB3 � . , � CB B6 DMH B3 O70 0.04 0.03 6.00 ' 0.17 1.34 12 inch 0.012 29.00 3.93 010345 97.80 9'I.50 95.80 92.02 92.04 P-CB6 � � � CB 85 DMH B3 0.49 0_31 0.15 � 6.00 0.92 3.12 12 inch 0.012 64.00 3.71 009259 92.10 91.60 96.10 9250 92;04 P-CBS DMH B3 DMH 64 N!A N/A 172 576 10.01 5.66 18 inch 0.012 25.00 10.18 008000 90_10 89.90 9620 . 91 BS 91.66 P-D63� � , CB BB DMH B6 0.62 078 0.49 6.00 2.95 476 72 inch 0.012 72.00 3.81 009722 9t50 90.80 94.90 9224 91.60 P-CBB DMH 66 DMH BS N/A N/A 0.81 5.96 4.67 5_16 75 inch 0.072 148-00 7.04 070135 90.50 89.00 93.90 91.39 90.01 P•DB6 CB B7 DMH B6 0.77 0.41 0.32 6.00 1.93 3.39 12 inch 0.012 11.00 3.68 009091 90.90 90.80 94.90 9'1.58 91.60 P-G87 � -BLDG Bt DMH B2 0.90 0.36 0.32- 6.00 1.96 4.44 10 inch 0.012 49.00 2.63 012245 94.90 94.30 99.90 95.53 93.03 P-RBi . DCB B2 DMH B7 0.66 1.15 076 6.00 4.61 5.05 15 inch 0.012 50.00 7.00 010000 92.90 92.40 96.30 93]7 93.60 P-CB2 CB Bt DMH B7 0.89 028 025 6.00 1.53 3.18 12 inch 0.012 96.00 279 005208 93.10 92.60 96.30 93.69 93.60 P-CB7� DMH Bi DMH B2 N!A N/A 1.01 5.96 6.09 3.52 18 inch 0.012 175.00 8.16 005143 92.10 9120 97.00 93.52 93.03 P-DBi � � DMH B2 DMH 63 N!A N!A 1.34 5.90 7.96 4.50 16 inch 0.012 184.00 -7.96 004891 91.10 90.20 96.70 92.94 92.04 P-DB2 DMH 85- GENERIC N/A N/A 3.56 5.63 2021 6.0'1 36 inch 0.012 207.00 53.45 005473 8820 87.10 98.50 89.64 87.10 P-DB5 WDQC1 FES Ct N!A N!A 0.00 0.00 7.79 5.00 24 inch 0.013 � 41.00 22.34 009756 61.40 61.00 69.00 62.39 61.00 P-DA2 . � DMH C4 WDQC7 N/A N/A 0.00 0.00 779 5.00 24 inch 0.012 73.00 40.56 027397 67.00 65.00 98J0 67.99 62.44 P-DA6 . � DMH C7 DMH C2 N!A N/A 0.00 0.00 523 5-36 15 inch 0.072 336.00 6.93 009821 86.30 83.00 96.60 8723 80.94 R-DA3 - � DMH C2 DMH C3 N/A N/A 0.00 0.00 779 577 18 inch 0.012 43.00 1227 011628 79.8D 79.30 68.00 60.88 80.47 P-DA4 DMH C3 DMH C4 N/A N/A 0.00 0.00 7.79 5.71 18 inch OD42 749_00 17 A2 010067 7930 7770 91.00 6028 68.04 P-DAS � OCS Ct DMH Ct 0.00 0.00 -0_00 0.00 523 5.36 15 inch 0.012 65.00 672 009231 87.00 •� 86.40 98.30 87.93 87.41 P-OA1 CB C1 DMH C2 �0.00 0.00 0.00 0.00 2.56 4.46 72 inch 0.013 18.00 5]5 022222 83.40 83.00 87.50 84.09 80.94 P-52 CB A2 DMH At 0.34 0.54 0.19 6.00 1J2 3.31 12 inch 0.013 57A0 3.66 010526 53.80 5320 60.30 5425 48.91 P-CAS CB A1 � DMH At �0.74 022 0.16 6.00 0.99 3.18 12 inch 0.013 73A0 4.42 015385 57.10 56.90 60.30 57.52 � 48.91 P-CA6 �� DMH A1 WQDA1 N/A N/A 0.35 5.98 2.10 378 t5 inch 0.013 15.00 7.46 0t3333 48.30 48.10 62.00 48.68 48.65 P-DA1 ' � wQD A1 DMH A2 N/A N/A 0.35 5.97 2.09 3J8 15 inch - 0.013 72.00 7.61 013889 48-.00 47.00 62.00 48.58 47.37 P-53 �' DMH A2 FES A1 N!A N/A 0.35 5.95 2.09 3.78 15 inch 0.013 71.00 16.08 061972 46.40 42.00 51.00 46.98 42.00 P-54 ' � - � � � ' TiOe:Leggs Hill YMCA � Prqed Engineer.VHB I:\09044.00\tedi\stortnrad\09044-cwasUn Yanasse Hangen BrusUin,Inc SlormCAD v5B�05.06.005.00] 04/t7lO6 07:04:08 PM �O Bentley Syslems,Inc. Haestad Me�trods SoNtion Cenler Watertown,CT 06795 USA *1-203755-1666 Page 1 ot 1 i �, , �L� Vanasse Hangen Bmstlin,Inc. , Recharge Calculations � Water Quality Device Sizing Calculations � ' � � ' � � ' , � � � � � � � L:\09094.0�\reportt\Drainage Repcut\Apri12006\09W4 Drainage Repor�-fiwl.doc � - � � 09044-PR-re�/L Type Ifl 24-hr 90 year Rainfall=4.60" : Prepared by VHB, Inc. �droCADO 7.10 s/n 001234 O 2005 HydroCAD Software Solutions LLC 4l10l20Q6 � Pond 3P: Field SSDP ' Ec�v�� .ur� y ` �F�r � �f� �L�� A E�.�. IIJcNES �Gsn��s� n . !Z �aurss = (7,�3R AGWE Fi£'r' — ��70(Q l.�U61C� �� 4aJr t�r� ��G�A�� Stage-Area-Storage 99 � -Storage � � 90�. _____________________ - . � ______________________________`____ . . . ._____'____�__ � � � _.. � �� .0`89 -_______.__________________ - � � . --------- __'_�-------------- _ � � --------I-- > m w � BS - -- . .t. .. -;£�r :.. ---- ' . i i � i 67 -. D . �. � " ,� _ � .. . . .. _ 1 � o � Storage(acre-feet) - � Z _ Guc.�c �' �. J�1kG(43 rcET = I�Z��O FeE"r � � , � ! � � F.'mm�utatinns � • �;�: y�� Project# �i�� : La�tion: SPw.�'NqpA�t[{RD Sheet ! of i Calculatedby: G�.+ Date: �}.�I•o(q � Checked by: Lo.�.� Date: ' Title rs�.x�+Z Q�{ s�y�� GR+�c.. . . � � kCS A��q oP SC--7`� GHA`v'36� = sl n BS.�'�/tZZ ' ,3fJ.2 S�IJ�+ � �s��A-t�'�z. '`2DW > 3EJoairs X ��2 sr��,�,r — I�, sF 1 �Y�AJtrtL �,cN.al�.1G� ��ZATE� (2Y� S'tt�� - II.^I3 L�S'/�O J 5F � � � = sz�s G� /90,�¢ = so �Q� �S� — � ,`. F��"� s�-..T�.+ CMk(tr THtS �� s �,,,+�a T�� a � �L'�'�t..s �+^SA +r3��.�. �J�oB ��o TSS CFF�GNCS -��Tt+�J S...wn'nY� � � ,, � � , � � ' mhrytmns.Iwnarrm.conVunuws.prtSS , Yanasse Hangen B,ustlin,/rta � � ♦ �--. StormTech� ; DetentiomRetenGomRecharge ' Subsurtace Stormwater Management" � isolator RowTM Performance Test Results � as reported by Tennessee Technofogical University The Isolator Row is an innovative yet simple � system that inexpensively removes total suspended solids (TSS)from storm water and provides easy access for inspection and , � � �� maintenance. in the Isolator Row, StormTecM chambers are completely enclosed by geo- textile fabrics. Sediment is captured in the , Isolator Row as storm.water passes through the fabric to the stone and adjaceht chambers. � The �ecent completion of TSS removai testing at Tennessee Tech provides design_engineers r—"s and regulators solid data that ean be used Stormiech chambers are the only chambers that meei stringent AASHTO to estimate the mainte�ance fr�e interval and satety factors for traffic load antl deep burial applications. establishes the Isolator Row as a best man- rl � agement practice (BMP)for TSS removal. � For additional information.on the lsolator Row (patent pending), contact StormTeeh at � (888) 892-2694. . I . I � , ' • 97%Ove�all TSS Removal • 80%_TSS Captured in the fsolator Row 1 • Estima(ed Maintenance Interval—3 years Four SG740 chambers in iest Uni(orm sediment disiribution apparatus at Tennessee Tech. (US Siiiea OK-110 SG=2.65). � Isolator Raw TSS Removal Efficiency ioo � � 2 • _ . t o gg � ♦. = 96 � i�v W ; � sa � 92 ♦ All Daia Points � . Trentlline � 90 , 0 7 2 3 4 5 6 7 B 9 10 � .Hydraulic Loading Rate(gpm/sqft.) � � ` 2.� �a��d��t i��o��a�t�� _ � � � FI JII�C� , ACCEPTS 4'SCH 40 PIPE StormTech SC-740 Chamber(not to scale) FOR OPTIONAL INSPECTION PORT Nominal Chamber Specifications - - � Size(YJ x H x Installed L) 51:0' 30.0' 85.4' ' ChamberStorage 45.9ft' � Minimum Installed Storage'74.9 fN - Weight 74 @S CS(�� X ��7 �)I`��IFT � � � . � �,��. sF . . . - � . . . I - y�J' --� . - _� ' &SA'INSTALLED ."� � I � - 30.0' I � _ � I� I I ' , �-51.0"-�1 . � . . . � Figure 2 StormTech-SG310 Cfiambev(not Fo scale) �nceepTsa•scti ao PiPe FOF OP.TIONAL ' Nominal Chamber Specifications - iNSPecnoN ao�tr Size(W x H x Installed L) 34.0'x 16.0'x 65.4' Chamber SYorage 14]tt' , Minimum Installed Siorage'31.0 fN Weigh[ 3716s � , 90�. � � 85.4'MSTALLED i' , f�— --.� a ,s o, i � , �o � � F—'—�.o•--{� � � 'This assumes a minimum of 6-inches of stone below,above and between chamber rows and 40%stone porosity. .4 Call SiormTech at 688.8922694 or visR our website at wwwstormtech.com for technical and pmduct information. � � � C'nmrn�tatinnc i " vro�ecc: Y/7GA �,.,t (x�qgs f1i//P,��c# o9o5'y, 6a � � Location: Salep,.,/iy/,t.b/e�iecy[sheet / of . Cakulatedby: TWM Date: �/—�7— D(o � chedced by: C D N oate: y—/7—0 6 TNe �1Q� — ISS j?CMo�AL � Doi„��.lST�ZFq „� DEF£�DE� — S�gGR�CHM��T �I t �l�W (GATE = Q. 1Z crS ovcC 2 HCS �2 /�� y�ETiN �' Fo-�- y' � w,,;,— , "� = Z 1Y r�" = Z-rr�2)Z — ZS. / eF � v�� = o,2 «s x yy3.831 GP.7 � n1ET,eiG �a.E}o/�+C �-'ATE cFS z-S.l CF ' = Z .IS cPM�F iTSS ;��.�ro�A� = 9`7 % (sEF �rrttc�Ea t.a�ivH) 1 i � i t � 1 �� , l�anasse Hangen Brust(irt,Inc. �■ r r �r r .� � r � � � � +�r �a r r � w� � . , . _ � � -� Downstre�rr, D�f�;nder . Removal Efficiency vs . 1Lo�ding �a�k� 120. .�,....�._...,�.:___...�,...._.�F..._._._..._Y._.,�_..,__.,.,... I ; _ _r..,._��....i_�...._i_._,,�._ . . ._,.-;, � :=;-,-�--�- � � I . ...I.... f ....1.._ i ' i I 1 ,.. . � . - I ; � � �. I I ; I � I I I 1 �0 ' , � ' -�i-- � -�- �-�----��-- -�----� -� _ `--�- ; ;� ,�� . .�, -, �,w � , , I i p .I I I� I I j I . °� ^-97 � � � . . � ' i I I � ' ' ' ' . 9+ , : , : . � � ! � i � i I .. ' � '� I � � $O _.. ' — _ i I � ,•, ' i—i-.:�, .+._ �_...��.r �.. ..I._ I +--.-' � i � ' _ , i I I � , � + � I � � ; � � � go � ._.___�. I . . , i._,_ � _ � ' --i,. I ��-�! --� , ..0 ; ' � LiJ ---�...�.._�._;_- ..�.. ,.I i' ,---� � � I I � ! ,��.( � i I .._'.. ..'� I i I I I 1 — ' i I f , � �y . � � . I I i I ' j ,.I� .I I � � ' I I I I � I II 9 • ` ' --�C��'�..-� • ,� 40 _.� _,�.....��;,.�.;..�.-_I.�;.__� _.�.� ��,:._..I._ _ ..�_I__.i.._. � i I ' � � ° � ' I � •� I I� r o+�a�..� � � ' � " I i j ! � � ' I I i ' ' � I � � I I II ' I � I � � i I �' � 20 �--a _.�_�.�,_,..._!:_.;�__.;..._.._.._,.__.l .�i.._.� � ;i..: ... _.._ _ __.._. _.._... _.._, � __.� _L � , , , I ' ' i , i. i. ,- ; . ; � �: I I � , � I � , . . ; , , , ' , . ..`. ' I. � . . _._,_ �___� � ; � ., Q � �. .� .i ..i:�. � i , ..l . I L �. .�. ..._.t_ ..- --1_ .. _. ...,... ; 0 10 20 30 40 ` 50 SO 70 . � Z.�s Loading Ra�e (�pmlc�.ft.) � —^Rernavai dawn l0 1'50 rnicro[rs —0verail removal . � � � Cmm�utatinn.c ' • P�o��r: Y/'?CA a,f (e�rs/ fli/! r�o��t u o90�1'/, oa � L.ocation: ��e%iciA�cryeasl Sheet � of Calculated by: TWM Date: y—/7 ��Cv I cn��by: GDni oate: �/— /7 —O(o Title �Qb — TSS IZEMoV7{L � �m..}�STKEA�'I �EF�ivoc2 — OCS Dl� f)C8 OZ� D�B D�� Dc6 py ' FGvu� R�4rE _ �. 2S cFS ovC6z 12 y,eS F82 /" OcPrf, ' t� �02 ! / � tlN/% ' Z �' — `Z7J" 1—Z = Z ?7'(Z� = ZS. � CF � Vice.VMETe2lG LoAp(�G �L,g jE — d Z.S cFS x yya, e3/ c� , �l CF _ `I, �I7 GP�"l�Cf , ' TSS (RtMo�AL ' 9�0 � (S£E Ar7AcH£o G�APH) � , i 1 1 1 Yanasse Hangerz Brustlin,/rtc. ^�irems.nu�uives.m„�aumzw�ss � � � �■r � � .� � .� � � �r a � � � � � i +� � Down,�trearrt D�f�nder. . Ftemova� Ef�iciency vs. lL.aadsr�g �a�ke . 12a. �....�_._......_...__..�......_.,_.,_.__.._�_._; .,...._r ____. .._..�... :.._- . ; , . . `�_._�. I i � i , ._�. . � � i � � � � � � � � � ... . I + , I I . ' � � � � � I � i I I I I i � ; � I j � . . . . . i I � � � i i � I I 100 �.:,;_ . ,..�-_�....I.�,. ---� - , �."i ' ' � _w�.�� .�;_._:�._ --� , U: o Y, i i I �_ �` �� i . 9Co� 7T' i : . i I I I � � � � $O i_.,..�.�.._i. _� ._..-,.._..{_ � � {_.. I �_._;:--r r�::-F--— — — - — ' I . �' I � '_ ' I-„ � I I V1 i� � � � �� i I � � 60 ::�.... __. _.-.. : � �.__ � _ � : l_ � � ..�. � --� ' .�� ' . ; ._�..,.�._-�._;- ; I,... _ { . �—�,- - , i I I i ' !�:! : - , y� � ; �� i i �� i �; �� I � i � , �.. � . • • i � i � ' i . :: I �� i i � i � ' . � ; . � ' � � � , ^� . I i i -- - I I_ I I � i � 40 _--�___, .�_�._.,.;�.�. .��.w_�� . .�., � �, _ I � ; ; ..i__ �� _.� -. _ .� , i � � I i i � I I � . � � , I �'�h+o+��s t.. j � � � ' ' I ' �� i � I . I � I , ' � � I ' � I ' i . I �� ti - — � I . . 20 , , '---�......., .,..�.......«.__��.j�..._:._1..__a..,,_�__-�G�---I._.._i.�---�...... ....�,,.y,,..........-�.. �� _._��,,._...,..._ ,...:.._._. "I� 1� I I �. , . . I ' , I I � i 1 r ' I I I � '- . . ' .I I ..I i I , Ir I� 1 .L �L ...�... I Q � � � .I .j ..�;:. ... . ; i . �. ..l . � l. .�. i :.._ �. ..- -- - . -- , , p � p 20 30 �0 ' �0 60 70 . � � ' Loading Rate (�pm/c�.f�.) �. 4.N7 I —itamoVal down l0 7'30 rriicrorts —0verall retnoval � � � � � � � � � � � � � � � � � � � ' � Downstream DefienderTM Design Ch-art (lmperial) Standard Inlet Pipe Diameters � UNIT OESIGN FLOW'/ INLET PIPE OUTLET PIPE HEAOlOSS' HEADLOSS WEIGHT WEIGHT OIL SEDIMENT UNIT DIAMETEF CAPACITV° DIAMETER pIAMETER � Df�IGN � GAPAGTV - FULL EMPTY' CAPAC TE CAPACIaTE DIAMETER Qnches) FLOW (Inches) leet lc�e m Inches Inches. (Ibs� Ibs allon5 oUbic ards �ee0 4 0.75/3.0 330�1.350 8 �2 �2 28 13,200 10.000 70 0.70 4 6 3.00/8.0 1,350/3,590 12 18 5 39 40,350 30,000 230 2.10 8 8 7.00/15.0 3,140/6,730 18 24 6 27 79,100 55,000 525 4.65 8 10 13.0/25.0 5,B30I11,220 24 30 6 24 146,300 700,000 1,050 8�)0 10 NOTES: � 1. Deslgn flow is based on 90°/ removal of all particles wlth speciflc gra'vity of 2.65 down to 150 microns, �� 84°/, overall removal efflciency. � 2. Capacity flow rate Is based on keeping headloss and removal efficiencies within a deslrable range with a standard � Inlet pipe. Hlgher flow rates are possible If lower removal effciciencles and higher headlosses are aCceptable. 11,I,L. 3. Headloss Is defined as the difference between the top water levef upstream and the top water level downstream of TECHNOLOGY the unit. Headlosses can be minimized by increasing the inletpipe diameter up to the standard outlet pipe d�ameter, �NC. 4, Weights are calculated with internal components, Support frame, ladger angles, and mounting hardware are 304 � stainless steel. Bench4ng skirt, center oone and sha(t, and dip plate are avallable In copolymer polypropylene or �� HDPE. �� • AutoCAD drawings and Microsoft Word specifications available on disk, +u e For pricing, delivery, and custom design, please call H.I.L. Technology, Ina, Proposal Engineering Department. H.I.L.TECHNOLOGY, INC.94 Hutshlns DYive, PordarTd, ME 04102 • Tel (207)75.6-6200 • Fax (207) 756•6212 • E-mail: hiltech�hil-tech,com , a<-01 04_53 PM - HIL- TECHriOLOGY � - . ;�::, 20T7566212 - p�9 F' t - �" ! , � . . � ' ' �� f �. � ' Downstream Qefender v _ ; Sample Calculations - : .'_ � ' � ! , Treatment Vofume , The Ueatrnent volume for each size Downstream Defender is defined as the space behveen Ehe top of the sloping part of the benehing skirt end the ; invert of the outiet piPe. See general arrangement drawing GA1. , For a 6-ft 8 unit the treatment volume equals_ ' V = IIr�h or IIr' r= h = radius of treaiment unit or distance between top of sloping i � part of benching skirt and 1he invert of the outlef. V= 3.14 x 3'= 84.8$' � �+�lurrYetric Loadina Rate I — l-he votumetric loading rate is simply fhe flow rate in gpm divided by Ihe ' treatment volume_ VLR = 5'8cls x 448.831g�m/cfs ' 84.8 ft' � = 30.7 gpm/ft' DawnsVeam Defenders will operate at 78�� or higher removal efficiency (on ' particles with s.g. of at least 2.fi5 and diametars equafing,ar exceeding 150 _ m�ctons) at yolumetric loading rates equai to ar less than 30.7 gpm/ft'.- The overajl removal of ail paficle sizes at 30.7 gpm/ft' is 70%. At higher flow rates � ' Uie efficiency decreases and at lowe�flow rates.the removal e�ciency increases_ � Referto Removai Efficiency graph vs. Flow chart. ! _ . I , ' i I i ' � � � , ' � ^. . . . - . l Y�� a J �.mu.,r� �l.'�,+�'.�!'l�YQt+Tt�$�1�I�+I�at$�#�t�l��f 1 ` � �' Region t: New England ; o-- � � - a Serving Conneclicut,Maine,Massachusetts,New Hampshire,Rhode Islartd,Vermont&9 Trbal � � Nalions , � . �'� ReceN A�6ons I ConMaM Us I Prin�Version Search: k � � , . EPA Hane>EPA New Enoland>Water>Stofmwaler>CEIT Show:Stortnwater>Downsiream DefendecTM ' . � � EPA NEHome Downstream DefenderT"" � A-Z Index - � —Seled a CompanyfTechnology— �. , CER Virtual Shov✓ . ' Home �� Stormwater Narrative Description ' . Introduction . . HIL Technology, Inc.oNers cost-eftective History � non-point source pollution prevention wfih � ' Virtual Smrmwater the Downstream DetenderT"';a trealment �� ' Trade Sbow device engineered ro capture settfeable �-+� . Regulations I solids,floatables, oil and geease from Permittiog in Ne�v stormwater runoft. Il is one ot the family ot ' England advanced Hydrodynamic Vortex . .. � Separators provided by HIL Technology, Inc.that augmenis gravitationa! __ �ackground inio torces with complexbut stabilized vortex forces to maximize solidsfliquids �inks to Oiher separation_Tbe result is a compact separeior Shal requires a smaller�land area , Sources of tr,to [han conventional gravitational sedimentation. A�iloatables�rep is Incorporated Fechnoiogies within[he same vesset. Disclaimer , — Benefits Applications Acknowledgements . Removes sediment, Flw[ables, oii - New deveiopments and re[rofits and g�ease - Was�ewater • Small`footprint • Construcdon si[es - ' • No pollutant re-entrainmen[ • Sireets and roadways • No loss of trea[men[capaci[y - Parking b(s Innovative behveen dean-outs , �- Technology . Imentory •�Low head Ioss, typically < 12 inches • Vehide maintenance wash-down yards • EEficient over a wide range of Flows • Industrial and commercial facilities � • Easy[o ins[all • Wetlands protec[ion . � • Low maintenance ' Four standard sizes are available,each designed to treat a range of fbws to a specfic solids removal efliciency.To meei specific pedormance criteria or for larger Flow applications,HIL oRers custom designed units up to iorty(40)feet in diameter. , . TFie Downstream Defender'"'is a pnmary ireatment device that requires no pretreatment_However,d can be used as a pretceaGnent device betore � ' detention systems, miiigating wetlands or other polishing systems. , ' ComponenTs: The DownsVeam DefenderTM'has no moving parts and no extemal power � ; requirements. It consists of a concrete cylindncal vessel with polypropylene intemal components and a stainless steet support frame.The concrete vessel is a standacd manhole,insialled below grade with a tangenlial inlet pipe and ' , http://www_epa.govlregion0l/steward/cei[[s/stormwa[edtechs/downstreamdefender.html ]0/15/2002 L ' , � �. � ;-. .�_ ______. _ .. ................................. � - ragcavi� an overfbw pipe which connect the treatrnerrt unit directly to the storm sewec ' Tv✓o ports at ground fevel provide access for inspecfion and dean-out of stored floatabfes and sedment The intemal components cortsist ot iwo conceMric holbw cylinders(the dp plate and center shaft),an inverted cone , (the center cone),a benching skirt and a tloatables lid.The iniemai components are labeled on the Downstream DefenderT°'Jnterior View. lhe purpose of the intemal components is two-fold: ' • The components act as flow modifying members[o eftect a complex but _ stable flow regime through the device;which maximizes solids � separaiion and prevents short circuiting_ . The components create isolated zones foc pollutant capture and storage. , System Dynamies: ._ The Downstream Defendertm is self-activating and operales on simple Ouid , hydraulics.The geometry of the iniemal components and placemeni oi the inlet and ouUet pipes are designed lo dired the flow in a pre-deterznined path through the vessel as described below. ' _ Stormwaier is introduced tangentially into the side of the vessel and initially spirals around ibe perimeter,in�he outer annular space (between the dip plate cylinder and manhole wall),where oil and floata6les rise to the water suAace � and are trapPed. As�the flow continues to rotate about the vertical auis,it , . travels down�owards the bottom o�the dip piate. Sediment is directed toward tfie center and base of tbe vessel where it is collected in the sediment storage �- tacility, beneath the vodex chamber.The�center cone protects stored sediment and redirects ihe main flow upwards and inwards. Flow passes under the dip , - plate and up ihrough the inner annular space,inside the dip plate(between the dip p�ate�and center shaf4cytinders), as a narrower spiraling column rotating at � - a sbwer velocity than the outer downward ilow. By the time the Oow reaches — ihe top oi the vessel, it is virtually free of solids and is discharged from the ' inner annular space, through the outlet pipe. The dip plate and center shafl cylinders are suspended(rom lhe underside of ' a component support trame.This dip plate serves two purposes: . it Iocates the shear zone,the inierface belween ihe outer downward circulation and the inner upward circulation where a marked difference � in velocity e�courages solids separation,and � . !t estab{ishes a zonG between fl and ihe outer wall where fioatables, oiP and grease are captured and retained affer a storm_ ' The floatables lid covers the inner annular space between the di Iate and PP center shaft_ It separates oil and floatables stored in the outer annular space, between the di �ate and the manhole wall fr m r PP � o ihe t eated eflluent in the , inner annular space. , , Specificaiions Standard specfications are avallable for typical design cnterra of 90!removai , � af all particles greater than 150 microns with a specific gravity of 2B5 at design fbw:However,the Downsiream DefenderT"'can easily 6e sized to ' �ttpJ!www.epa.gov/region0l/steward/ceit[s/stormwa[er![echs/downstreamdefender.html 10/I512002 � ' , -_ . "' --�----------______- - . ragc�vi .�� , meet higher or lower perforrnance requirements.Headtoss through the unit,a[ design fbw,is typically less than 12 inches.At lower flows,the removal efficiencies are enhanced and headlosses decrease_ , Site Constrainfsllnstatlation Requirements ' The unit should be installed in a location that is easily accessible tor the maiMenance vebicle,pretera6ly in a flat area close to a roadway or parking area_The Downstream DefenderT"'is delivered to site completely fabricated, ' ready to be installed into the excavated hole and connected to the iniet and outlet piping. It is compact and can fit within an excavation trench guard. Larger units are delivered to site in component form for final assembiy at the job site. Instaliation time for a 6 foot unit is typically t�/z hours. ' , Performance . . The DownsVeam DefenderT"' is designed to remove settleable solids, floatables,oils and grease from stormwater runoff.�Full-scale test results show , � settleable solids removal ef(iciencies o(90%at design flows:Because the sediment and oil storage areas are outside the main Oow path through Ihe unit, -- previously collecled solids,oil and floatables are not re-entrafned in the , eftluent during major storm events.or surcharge conditions_in addition, trealment capacities are nol reduced as poilutants accumu�ate between dean- outs. ' -��- MaiNenance - ' . The Downsheam DefenderT"'is unique in-Ihat the sediment and oil storage areas are oulside the treatment flow path. As menCioned above,previousty � ' . collected solids,oil and floatables are thereby protected from re-eMrainment . into the etfiuent during major storms or surcharge conditions.�Furthermore,as sedimenl,floatables and oil are collected and stored over a�period of several months, treatment capacities are not reduceci as pollutaMs accumulate _ ' beiween clean-outs. Afler a storm evert,the water levei in Ihe Downstream DefenderT"`drains _ ' down to the invert of the outlet pipe, keeping the und wet Maintaining a wet ' unit has Iwo major advantages: t. Ii kaeps the ol and ffoatables stored on the water sudace separate from sediment stored below the vortex chamber,providing the option for , separate oil disposai,such as passive skimmers, it desired_ 2. It preveNs stored sediment from solidifying in ihe base ot fhe unit.The cieanout procedure becomes much more diticufl and labor intensive if ' ' - � the system aliows fine sediment to dry-out and consolidate.When this occurs,dean-out crews must enter the chamber and manually remove the sediment;a labor intensive operation in a hazardous environment ' . The D9wnstreum DefenderTM'has large clear openings and no intemal restrictions or weirs, minimizing the nsk o(biockage and hydraufic Iosses. ' . �ttp-l/www.epa.gov/region0l/steward/ceitts/stormwaterltechs/downsveamdefendechtml 10/15/2002 ' ' _;.:.�. .._........�. . ...........................,.,.,.,, _ ragc•f tu_f � Orifices and intemal weirs can create two serious hydrauGc problems_ 1. Increased risk of blockage-Small orifices terxl to collect debris and trash such as soda cans,sticks and Styrofoam cups which further , reduce opening size and may even bbck openings completely.This alfers the hydraufics in a ffow-through ireatrnent device,adversely aflecting operation and pedormance and can eventually lead to system back-ups and maintenance issues. Removing debris from a submerged � , � orifice may require pumping down the chamber_ 2_ Increased head losses- intemat restnctions,such as weirs and baffles, ' significantly increase hydraulic Iosses in a fiow-through ireatment device.The fiigher tbe flow ihrough the system,the higher the head loss.This problem is exacerbated dunng the more intense storm events, backing up the storm sewer and increasing the nsk for . , upsiream f loodng. � Maintenance Procedures: � - A commercialiy or municipally owned sump-vac is used[o remove captured ' _ sediment and tloatables.Access poRs are located in the top of the manhole_ The f�oa�ables access port.is above the outer annular space between the dip . plate and the manhole waR,whe[e�loatables are retained.The sediment , removal access poA is focated drectly over ihe holiow center shaR that leads . [o ihe sediment storage facility below ihe vortex chamber. Floatables and oil should be removed prior io ihe removal of�he sedimen�. , The frequency of the sump-vac procedure is determined in the field after � . installation. During the first year of operation,the uni[sbould be�inspected every six months to determine the rate of sediment and Eloatabfes accumulation. A probe can-be used to determine tbe levet of-solids in ihe ' . sediment storage tacility.This information can ihen be used to estabiish a , mainienance schedule.Wben sedimeni depth has aceumulated to the specrfied�depth,the contents should be removed by sump-vac. In most _ situations,it is recommended that the uni�s be deaned annuaily. � ' Although a small portion of water is removed along with the�pollutaMs dunng � the clean-out process, �he uni�s�are typicafly not compietely dewatered- ' minimizing disposal costs_The sump-vac procedure for a typical6-ft diameter Downstream DefenderT"'with one toot of sediment depth and two inches of oii and debns takes aboui 25 minutes and removes.about 150-200 gallons of water in the pcocess_ , - - " Longevity ' The Downstream DefenderTM consists ot a sfandard concreie manhole with intemal components made from either aofypropylene or Type 304 staintess ' steei.There are no moving parts,and ii has no external power requirements. With regular maintenance,fhe Downstream Defende[T"'will treat stormwater tor a period in excess oi 30 years. ' '. �� - Additional Information ' � HIL's professional engineers work closely w;,h municipalities,consultants, indusiries and deve�opers.They offer a full technical support service and can ' -http_//www.epa.gov/region0llsteward{ceitts/srormwated[echs/downstreamdefendechtml 10/15/2002 , , . - ; .' ��.��...�.wa vv.ru..u....�aavv��.uu�.a LQ�'G:JVIJ � _, advise on the design of siormwater treaVnent arxt stortnwater management schemes_Customized Plan and Elevation Vews,whicfi show hydraufic grade lines,a2 generated in AutoCAD 14 tor each Downstream DefenderT"' app6cation. � � ' HIL Technology offers free training and technicai seminars.Standard engineering drawings(AutoCAD 14)and specifications(WordPerfect)are ' _ avalable on disk For more iniormation or to submit an oMine inquiry,visit HIL Technotog�s web site at vnvw.hil-tech.com �T"��•. , � Polanutacturer , Company: HIL Technology, Inc. Address: 94 Hutchins Drive Portland,ME 04702 I�. ' Telephone: (207)756-6200 Fax: (207) 756-6212 eMail: hiltechC�lhil-tech.com ��-� Website: w�nro�.hil-lech.com ="T�^�'°�^�« ._--_.... . .. . , - - Contact: David Mongeau, Regional Sales Engineer , � Disclaimer � � � Please be aware that the technology'descriptions contained on ihis site - including,bat�not limited to,intormatwn on-technology applications, - - perfortnance, limitations,benefits and cosis have tieen provided directly by the � — - - �vendors.�No aitempt was made to examine,screen or verity eompany or � ' tecfinology informatfon.Therebre,keep in mind that as you use ihis site, EFA .has no[confirmed[he accuracy or legal adequacy of any disdosures,product pedormance or other in(ormation provided by the companies and used by ERA in setling up this web sie.The indusion ot companies and their products in , � tbis database does not cons�itute or imply endorsemeN or recomrnendation by the EPA. , Serving Connecticut,Maine,Massachusetls,New.Hampshire,Rhode lstand,Ve�rtront,8 B Tribal Natiofis ' .. - EPA Home t Privacy and SecmiN Nofice I Con�ac�Us ' ��.� . Last updated on Priday.Seplemtier DU�,2002 URL:htlpJhvww.epa.gov/regio�llstewarNceitts/5tormxaterAerh.4downstreamde!erxler.htrni ' � r . . ' , ' ' - h::pJ/www.epa.gov/region0l/stewazd/ceittslstormwater/techs/downstreamdefender.htrril 10/l5/2002 ' , � , ' �� . . . VanasseHangenBrusHin,Inc. � . . , ' , Appendix E: Long Term Stormwater Operation and � Maintenance Measures � � � � � 1 � � � � � � � � 1.:\09W4 00\reports\Drainage Repon\AprJ 20�6\09W4 Draiwge Report-linal.d« ' � , Y� Vanasse Hangen Biustlin,Inc � , ' ._._.—_..—_..�.__..._.......—'_..._ _._.._..___'—"-- . Long Term Stormwater Maintenance Measures ' The following maintenance program is proposed to ensure the continued effectiveness of the structura]water quality controls previously described. ' - > lnspect subsurface infiltration/detention the first 3 storms afrer installation and then once annually,in the spring,for accumulated sediment. Necessary sediment removal and/or repair,wi11 be performed immediately upon , identification. > Inspect water quality units annually for acmmulated sediment. Clean when ' sediment accumulation exceeds manufacturers recommendations or as needed. > Clean all catch basins once annually to remove accumulated sand,sediment,and , floatable produets or as needed based on use. > Paved areas will be swept,at a minimum,two times per year. i , > Routinely pick up and remove litter from the parking areas,islands and perimeter landscape areas in addition to regular pavement sweeping. ' > Routinely inspect all dumpster and compactor locations tor spills.Remove all trash litter from the enclosure and dispose of properly. ' ' , ' ' ' ' il , L\096f4.00\reporis\Draiwge Aeport\Apri12006\OYM4 Drairege Repo�blinal.d« '