67-69 MASON ST, 72 FLINT ST - PLANNING 67-69 Mason St., 72 Flint St.(Riverview
"Place/Former Salem Suede)Traffic—
Ctnrm�uaterLTlraina.ve/Trri.vatinn_.. . __
f
Professional Land Surveyors& Civil Engineers
ESSEX SURVEY SERVICE 1958 - 1986
OSBORN PALMER .1911 - 1970
BRADFORD&WEED 1885 - 1972
STORMWATER MANAGEMENT REPORT
RIVERVIEW PLACE
FLINT AND MASON STREETS
SALEM, MA. 01970
NOVEMBER 2008
Owner/Applicant:
Riverview Place LLC
• 6 Cider Mill Road
Peabody, MA. 01960
(978)-979-4072
Engineer:
Clayton A. Morin, P.E. 30969 (Mass.)
Eastern Land Survey Associates, Inc. s�
104 Lowell Street �,�t14 OF s
Peabody, MA. 01960 CLAvr A.
o MOR
CIVI
.30
IST
i
�-- 104 LOWELL STREET
PEABODY, MASS. 01960
TELEPHONE: 978-531-8121 FAX: 978-531-5920
TABLE OF CONTENTS
Section Number Page Number
One—Site Conditions
• Existing Conditions 1-1
• Soil Conditions 1-1
• Resource Areas 1-1
Two— Stormwater Management
• Project Description 2-1
• Low Impact Development Measures 2-1
• Standard 1 —No New Untreated Discharges 2-1
• Standard 2—Peak Rate Attenuation 2-1
• Standard 3 —Recharge 2-2
• Standard 4—Water Quality 2-2
• Standard 5 —Land Uses with Higher Potential Pollutant Loads 2-2
• Standard 6—Critical Areas 2-3
• Standard 7—Redevelopments 2-3
• • Standard 8 —Construction Period Pollution Prevention and Erosion Control Plan 2-3
• Standard 9—Operation and Maintenance Plan 2-3
• Standard 10—Prohibition of Illicit Discharges 2-4
Three—Hydrologic and Hydraulic Analysis
• Standard 1 — Scour/Erosion Analysis 3-1
• Standard 2—Peak Rate Attenuation Analysis 3-2
• Standard 3 —Recharge Analysis 3-9
• .Standard 4—Water Quality Treatment 3-11
• Piped Drainage Facilities Analysis 3-15
Four—Additional Submissions
• Stormwater Pollution Prevention Plan
• Permit Requirements
• Checklist for Stormwater Report
• Operation and Maintenance Plan
• Redevelopment Checklist
• Demolition Plan
L
SECTION 1
SITE CONDITIONS
SITE CONDITIONS
•
Existing Conditions
The site of Riverview Place is located on Flint and Mason Streets and the North River
and is comprised of 4.3 acres of industrially developed and used land. The site has been
used for such purposes since the 1800's. The primary industrial use on site has been
activities related to leather manufacturing until recent years when a variety of commercial
activities have occurred on the property.
Some 2.9 acres of the site are covered by buildings or pavement, 0.8 acres by hard-
packed gravel yard areas and 0.6 acres of the site by sparsely vegetated areas.
The site drains directly to the North River. Municipal water and sewer services are
available from both Mason and Flint Streets.
Soil Conditions
Soils on the site are classified as on the NCRS database and have been likely disturbed
completely by on-going activities for the last 150 years. Soils have been assumed to be
in Hydrologic Soil Group D for analysis purposes. (The Conservation Commission is
requested to waive the requirements of Standard 2 since the site is subject to coastal
• storm flowage).
Resource Areas
The following resource areas are present on site:
1. Bank and associated 100 foot Buffer Zone as associated with the North River;
2. 200 foot wide riverfront;
3. Land subject to coastal storm flowage (At or below Elevation 10.3,N.G.V.D.).
• 11
SECTION 2
STORMWATER MANAGEMENT
Description
tion
p
The proposed project is to completely redevelop the site for use as 130 units of multi-
family housing in three buildings and a 5,000 square foot commercial space in Building
3. Stormwater is to be managed in accordance with D.E.P. Technical Guidance.
Low Impact Development Measures
Low impact development measures include the use of bioretention cells and an area of
porous pavement. The LID measures will be finalized once the site assessment has been
completed. If on-site conditions so require, the LID BMP's will be constructed with
impervious liners and underdrains.
Standard 1
No new stormwater conveyances (e.g. outfalls) may discharge untreated stormwater
directly to or cause erosion in wetlands or waters of the Commonwealth.
Site runoff will be directed through an 18 inch drain to the existing riprap lined portion of
the bank of the North River. A scour analysis is provided in Section 3.
Standard 2
• Stormwater management systems shall be designed so that post-development peak
discharge rates do not exceed pre-development peak discharge rates. This Standard may
be waived for discharges to land subject to coastal storm flowage as defined in 310 CMR
10.04.
A stormwater collection and management system has been designed for Riverview Place
in the greatest degree of compliance achievable under the 2008 Department of
Environmental Protection Stormwater Standards.
Site drainage will be accomplished by collection of surface runoff into a series of piped
catch basins and manholes. Outflow from that system will be directed through an
appropriately designed proprietary water quality treatment device before discharge into
the North River. The storm drainage collection system has been sized on the basis of a
ten year storm. Since most of the basins are located in low points, storms of higher
intensity can be accommodated with minor (3 to 6 inch)ponding and pipe surcharging.
Computations of predevelopment and postdevelopment runoff from the site and
properties along Mason and Flint Streets which flow into the property have been
performed using TR-55 methodology. Those computations are provided in Section 3 of
the report and are summarized as follows:
• 21
Storm Recurrence Interval Peak Runoff Rate (cfs)
• Predevelopment Postdevelopment
2 Year 10.99 10.71
10 Year 16.91 16.66
100 Year 26.24 26.05
The slight decrease in postdevelopment runoff is attributed to landscape addition and
improvements throughout the site. Since portions of the site are subject to coastal storm
flowage, Stormwater Management Policy does not require attenuation of
postdevelopment runoff.
Standard 3
Loss of annual recharge to ground water shall be eliminated or minimized through the
use of infiltration measures including environmentally sensitive site design, low impact
development techniques, stormwater best management practices, and good operation and
maintenance. At a minimum, the annual recharge from the post-development site shall
approximate the annual recharge from pre-development conditions based on soil type.
Prior site development activities have rendered site soils unclassifiable and virtually
• eliminated the opportunity for groundwater recharge. Following the site assessment after
demolition of the existing buildings, the feasibility of constructing one or more
bioretention cells to accept roof runoff will be investigated. Landscaped areas on site
will increase greatly thus improving the opportunity for groundwater recharge.
Standard 4
Stormwater management systems shall be designed to remove 80%of the average annual
post-construction load of Total Suspended Solids (TSS).
A series of deep sump hooded catch basins will collect runoff from paved areas of the site
and direct that runoff to an appropriately sized Stormceptor. Roof runoff from areas
where mechanical equipment is contained will also be directed to that devise. A TSS
removal rate of 82.75 % will result. No treatment facilities currently exist.
Standard 5
For land uses with higher potential pollutant loads, source control and pollution
prevention shall be implemented in accordance with the Massachusetts Stormwater
Handbook to eliminate or reduce the discharge of Stormwater runoff from such land uses
to the maximum extent practicable.
2-2
• The property use is primarily residential and is not considered to be a use with higher
potential pollutant loads.
Standard 6
Stormwater discharges within the Zone H or Interim Wellhead Protection Area of a
public water supply and stormwater discharges near or to any other critical area require
the use of the specific source control and pollution prevention measures and the specific
structural stormwater best management practices determined by the Department to be
suitable for managing discharges to such areas as provided in the Massachusetts
Stormwater Handbook
Stormwater discharge is not into any water supply area nor near any other critical area.
Standard 7
A redevelopment project is required to meet the following Stormwater Management
Standards only to the maximum extent practicable: Standard 2, Standard 3, and the
pretreatment and structural best management practice requirements of Standards 4, 5
and 6. Existing stormwater discharges shall comply with Standard I only to the
maximum extent practicable. A redevelopment project shall also comply with all other
requirements of the Stormwater Management Standards and improve existing conditions.
. The project is a redevelopment. Standards 1, 2, 4, 8, 9 and 10 are met. Standard 3 is met
to the maximum extent practicable. Standard 2 is requested to be waived although
discharges will be slightly reduced as a result of redevelopment. Standards 5 and 6 are
not applicable to the site.
Standard 8
A plan to control construction related impacts including erosion, sedimentation and other
pollutant sources during construction and land disturbance activities (construction
period erosion, sedimentation and pollution prevention plan) shall be developed and
implemented.
A draft NPDES SWPPP is included in Section 4; erosion control measures are also
outlined on the Plan and within the Operation and Maintenance Plan.
Standard 9
A long-term operation and maintenance plan shall be developed and implemented to
ensure that stormwater management systems function as designed
A long term Operation and Maintenance Plan for the various stormwater best
management practices is provided in Section 4.
2-3
Standard 10
• All illicit discharges to the stormwater management system are prohibited.
The stormwater management plan includes a statement as to prohibition of illicit
discharges. A statement for the site will be provided after demolition is completed.
2-4
SECTION 3
HYDROLOGIC AND HYDRAULIC ANALYSIS
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Hydrograph Plot
Hydrallow Hydrographs by Intelisolve
• Hyd. No. 1
Predevelopment
Hydrograph type = SCS Runoff Peak discharge = 10.99 cfs
Storm frequency = 2 yrs Time interval = 6 min
Drainage area = 5.75 ac Curve number = 95
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = USER Time of conc. (Tc) = 15 min
Total precip. = 3.10 in Distribution = Type III
Storm duration = 24 hrs Shape factor = 484
Hydrograph Volume=49,841 tuft
1 - SCS Runoff - 2 Yr - Qp = 10.99 cfs
15
1
C'1
5
0
0.0 2.4 4.8 7.2 9.6 12.0 14.4 16.8 19.2 21.6 24.0
Time (hrs)
/ Hyd. 1
3 .3
Hydrograph Plot -3 ;:- A-
Hydrallow Hydrographs by Irdelisolve
Hyd. No. 1
Predevelopment
Hydrograph type = SCS Runoff Peak discharge = 16.91 cfs
Storm frequency = 10 yrs Time interval = 6 min
Drainage area = 5.75 ac Curve number = 95
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = USER Time of conc. (Tc) = 15 min
Total precip. = 4.60 in Distribution = Type III
Storm duration = 24 hrs Shape factor = 484
Hydrograph Volume=78,733 cuft
1 - SCS Runoff - 10 Yr - Qp = 16.91 ds
2
15
� 1
C'!
0
0.0 2.4 4.8 7.2 9.6 12.0 14.4 16.8 16.2 216 24.O
Time (hrs)
/ Hyd. 1
3-�
Hydrograph Plot 4 of A
Hydraflow Hydrographs by Intellsolve
• Hyd. No. 1
Predevelopment
Hydrograph type = SCS Runoff Peak discharge = 26.24 cfs
Storm frequency = 100 yrs Time interval = 6 min
Drainage area = 5.75 ac Curve number = 95
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = USER Time of conc. (Tc) = 15 min
Total precip. = 7.00 in Distribution = Type III
Storm duration = 24 hrs Shape factor = 484
Hydrograph Volume=125,348 cult
1 - SCS Runoff - '100 Yr - QP = 26.24 ds
3
• 25
2
� 1
� 1
5
0
0.0 2.4 4.8 7.2 9.6 12.014.4 16.8 19.2 .21.624.0
Time (hrs)
/ Hyd. 1
3 - 5
POSTDEVELOPMENT RUNOFF COMPUTATIONS
Hydrograph Plot , o ra 3
Hydraflow Hydrographs by Intellsolve
• Hyd. No. 2
Postdevelopment
Hydrograph type = SCS Runoff Peak discharge = 10.71 cfs
Storm frequency = 2 yrs Time interval = 6 min
Drainage area = 5.75 ac Curve number = 94
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = USER Time of conc. (Tc) = 15 min
Total precip. = 3.10 in Distribution = Type III
Storm duration = 24 hrs Shape factor = 484
Hydrograph Volume=47,880 tuft
2 - SCS Runoff - 2 Yr - Qp = 10.71 CfS
15
1
Cl
0
0.0 2.4 4.8 7.2 9.6 12.0 14.4 16.8 19.2 21.6 24.0
Time (hrs)
/ Hyd. 2
3 -`
Hydrograph Plot
2 aQ 3
HydraBow Hydrographs by Intelisolve
• Hyd. No. 2
Postdevelopment
Hydrograph type = SCS Runoff Peak discharge = 16.66 cfs
Storm frequency = 10 yrs Time interval = 6 min
Drainage.area = 5.75 ac Curve number = 94
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = USER Time of cone. (Tc) = 15 min
Total precip. = 4.60 in Distribution = Type III
Storm duration = 24 hrs Shape factor = 484
Hydrograph Volume=76,584 cull
2 - SCS Runoff - 10 Yr - Qp = 16.66 ds
2
15
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a
0
0.0 2.4 4.8 7.2 9.6 12.0 14.4 16.8 19.2 21.6 24.0
Time (hrs)
i Hyd. 2
3--1
Hydrograph Plot
Hydraflow Hydrographs by intelisolve
• Hyd. No. 2
Postdevelopment
Hydrograph type = SCS Runoff Peak discharge = 26.05 cfs
Storm frequency = 100 yrs Time interval = 6 min
Drainage area = 5.75 ac Curve number = 94
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = USER Time of cont. (Tc) = 15 min
Total precip. = 7.00 in Distribution = Type III
Storm duration = 24 hrs Shape factor = 484
Hydrograph Volume= 123,049 cuR
2 - SCS Runoff - 100 Yr - QP = 26.05 ds
30-
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/ Hyd. 2
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INSTRUCTIONS:
AmeUbmied-Mer.s,2001
........... 1.Sheet is nonautornated.Print sheet and complete Using hand calculaflons.Column A and B:See MassIDEP Structural BMP Table
2.The calculations must be completed using the Column Headings specified In Chart and Not the Excel Column Headings
3.To complete Chart Column D,mu tUple Column B value within Row x Column C value within R"
4.To complete Chart Column E value,subtract Column 0 value wIthin Row from Column C within Row
5.Total TSS Removal=Sum AU Values In Column D
..........
Location:
A C
D E
TSS Removal Starting TSS Amount Remaining
BMP' Rate'
Load* Removed B*C Load C-D
cf�-)t k, r3QJV4
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Separate Form Needs to
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Total TSS Removal Outlet or BMP Train
Project: Z-)qLotr.,j
Prepared BY: '-A 44 PA
*Equals remaining load frc previous BMP(E)
Date:
which enters the BMP
.................
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Stormwater Technology:
Stormceptor
(Hydro Conduit, formerly CSR New England Pipe)
Revised February 2003
The Stormceptor Fact Sheet is one in a seriee pf fact sheety for stormwater terlmologies and related Perfor-
mance evaluations, which are undertaken by the Massachusetts STrategic Envirotechnology Partnersh/p (STEP).
The STEP evaluation entitled, Technology Assessment Stormceptor CSR New England Pipe, January 1998 is the
information source for this fact sheet.When a more thorough understanding of a system is required,the full Technology
Assessment should be reviewed Copies are available for downloading from the STEP Web site(www.STEPSITE.org/)
or by contacting the STEP Program(Phone:617/626/1197,FAX:617/626/1180,email:linda.benevides@state.ma.us).This
fact sheet is subject to future updates as additional performance information becomes available.
Description/Definition
Stormceptor is a prefabricated,underground unit that
separates oils, grease,and sediment from stormwater
runoff when installed with an existing orncw pipe
conveyance system.The unit is divided into two cham-
bers a treatment and a flow bypass chamber During
typical storm events,runoff is directed by the inflow weir
through a drop pipe into the lower treatment chamber
where sediment, oil,and grease are separated from the
• flow by gravity.The bypass chamber is designed to arn�war
convey excess stormwater,which overtops the inflow
weir,through the system without treatment.
Equipment and Sizing
The on-line Stormceptor units are available in eight
sizes ranging from six and twelve feet in diameter with
capacities of 900 to 7200 gallons.Since issuing the STEP
assessment in 1998,the manufacturer has expanded the
Stormeeplorpruduct line.to include a storm drain into
(STC 4501)and three units(Models STC 11000,STC
13000,and STC16000).These systems are not included Rgure L Stonaaceptor Operation during average
in the STEP evaluation.Users and decision-makers may flow conditions.
require additional field test results and new data for these
new systems in order to accept performance ratings, Performance/Effectiveness
particularly if they are higher than those reported in the The system is designed to provide separation of
STEP technology assessment and this fact sheet, sediment,oil,and grease from stormwater by routing
runoff into a low-turbulence environment where solids
Stormceptor units are available in either precast settle and oils float out of solution.The system sizing is
concrete or fiberglass for special applications. Concrete based on the drainage area,historical rainfall data,and
units are pre-engineered for HS-20 min.traffic loading at the solids removal efficiency required.It is recommended
the surface. Fiberglass units can be used in areas where that the system be used in combination with other
there is a potential for oil and chemical spills. stormwater controls to conform with the Massachusetts
• Stormwater Management Policy and standards.
3 - i2
An Imperial Model STC 2000(equivalent to the Technology Status
Model STC^_400)in Edmonton,Canada treats flow from The Stormceptor system provides greater solids
a 9.8 acre commercial parking lot.This system was separation and higher TSS removal efficiencies than oil
monitored during four storm events in 1996 and shown to and grit separators. Stormceptor systems are among the
have an average total suspended solids(TSS)removal category of hydrodynamic separators, which are flow-
efficiency of 52 percent.In designing a system to achieve through devices with the capacity to settle or separate
a comparable removal efficiency,the relationship be- grit,oil,sediment,or other pollutants from stormwater.
tween system size and impervious drainage area should According to the U.S.Environmental Protection Agency,
be considered,as detailed in Table 1 and the Technology "Hydrodynamic separators are most effective where the
Assessment Report. materials to be removed from runoff are heavy particu-
lates-which can be settled-or floatables-which can be
A Model STC 1200 in Westwood,Massachusetts captured,rather than solids with poor settleability or
treats flow from 0.65 acres consisting of a paved truck dissolvedpollutants"
loading area at a manufacturing facility.The unit was
monitored for six storm events in 1997,but only four The field studies evaluated for the STEP assessment
events had measurable TSS influent concentrations. Of predate the Stormwater Best Management Practice
these four events, the average TSS removal efficiency Demonstration Tier II Protocol(2001),which is appli-
was calculated to be 77 percent,which is less than the 80 cable in Massachusetts and other states in the Technol-
percent removal targeted by the manufacturer. ogy Acceptance Reciprocity Partnership(TARP), to
ensure quality controlled studies that can be shared
Based on these field monitoring results,and when the among participating states.Therefore, interstate reciproc-
unit sizing follows the guidance in Table 1,removal ity is not available to the manufacturer,based on perfor-
efficiencies between 52 percent and 77 percent may be mance claims that were evaluated by STEP in 1998. If
achieved where installations have similar rainfall and land the TARP Protocol requirements are fulfilled in the
use characteristics as those reviewed for the STEP futurethe manufacturer could pursue reciprocal verifi-
evaluation.It is recommended that additional field re- cation for Stormeeptor systems in participating TARP
• search and new data be evaluated to validate perfor- states. More information on the TARP Protocol is
mance ratings higher than those verified by STEP. available on the following Web site:www.dep.state.paus/
Specific performance claims for oil and grease were dep/deputate/pollprev/techservices/tarp.
not evaluated by STEP. However,total petroleum Applications/Advantages
hydrocarbons(TPH)were analyzed during the
Westwood study.Results indicated that the unit was + Stormceptor systems identified in Table I should be
effective in capturing oils. used in combination with other BMPs to remove 80
percent of the average annual load of TSS (DEP
- Stormwater Policy Standard 4). Systems may be well
suited for pretreatment in a mixed component system
' designed for.storrnwater recharge.
STC 900 - --- ------- — 045 0'9 + Performance data show that Stormceptor may provide
1.46 TSS removal rates in the range of 52 percent to 77
STC 1800 percent when sized according to Table 1.Higher TSS
STC
W0 -- -- 26 ra3 removal rates were achieved during low flow,low in-
tensity storms with less than one third of an inch of
STC .,-.. —.- .._....._ ...._.._� ..._.-_.._.. ._.__ _�._ runoff. Also,by reducing theimperviousdrainagearea
4.6 9• relative to the system size,the STEP Technology As-
STC 7200.___._...-------------___.__.._.. S55sessmentKe rtindicatedthathi
po gher removal efficien-
Table 1:Sizing for TSS removal (adapted cies may be achievable.However, STEP recommends
from the manufacturer's sizing in the 1998 collection of additional data"representing a varied set
STEP Report) Use the table to determine a TSS
removal rate. Use the new Rinker method for sizing of operating conditions over a realistic maintenance
Stormceptor units. The sizing method has been cycle to verify TSS removal rates greater than 80 per-
changed since publication of the STEP Report. cent"
Note: To achieve 52% and 77% TSS removal rates
on some sites, it may be necessary to use lower {9 The Stormceptor system is suitable for new and retro-
maximum Impervious areas than those in Table 1. fit applications.For retrofit applications,it should not
3- ti3
take the place of a catch basin for the systems that averaging$300 to$500. The expected life of a system has
have been verified.Also,for retrofit applications,it should been estimated to be 50 to 100 years.
be installed in lateral lines and not main trunk lines.
• The system is particularly well suited in constricted ar-
eas and where space is limited.
0 It also is suitable for use in areas ofhigh potential polim- STC 900 0.5
ant loads(DEP Stormwater Policy Standard 5),where _"`_ _._ 1 ...__--__—.----
_______...._0. _....___..____....
it may be used effectively in capturing and containing STC 1
800
oil and chemical spills. Web site:www.state.ma.us/dep/ _S7C 2400
btp/stormwtr/stormpub.htm __.._._._._...STC 3800
....._.....---,.._ ._.. ___._. _..1.25
Considerations/Limitations --s '--- ------ts--- -
+ Systems are not expected to provide significant nutrient "--`— S C 7100__'_
(nitrogen and phosphorus)or fecal coliform removal. Talle 2:The Stornceptor clean out is based on 15!
+ The systems are not recommended for use in critical percent of the sediment storage volume in the
areas,such as public drinking water supplies,certified References
vernal pools,public swimming beaches,shellfish grow-
ing areas,cold water fisheries,and some Areas of Criti- Winkler,E.S. 1998."TechnologyAssessment,Stormceptor."
cal Environmental Concern (ACECs), except as a pre- University of Massachusetts,Amherst,MA.
treatment device for BMPs that have been approved STEP Web site: www.STEPSITE.org/
by DEP for use in critical areas. The structural BMPs
approved for use in critical areas are described in Stan- Massachusetts Department of Environmental Protection and
dard 6 of the Stormwater Management Policy, Office of Coastal Zone Management. 1997. "Stormwater
www.state.ma.usidep/brp/stormwtr/stormpub.htm. Management Handbooks,Volumes One and Two."Boston,
MA. Handbooks Web site: www.statc.ma.us/dcp/brp/
• • There is a limited set of useful data for predicting the sWrrnwtr/stormpub htm.
relationship between treatment efficiency and loading
rates.Removal efficiencies have not been demonstrated United States Environmental Protection Agency. "Storm
for all unit sizes. Water Technology Fact Sheet Hydrodynamic Separators."
• Further research is needed to determine how much TSS EPA 832-F-99-017.
bypasses the treatment chamber during certain,higher dYortnceptor Web sites: www.iinkermaterials.com/
velocity storm events which recur less frequently. stormceptor
• Systems require regular maintenance to minimise the TARP Web site: www.dep.state.pa.us/dep/deputate/
potential for washout of the accumulated sediments. pollprev/techservices/tarp
Reliability/Maintenance
All BMPs require scheduled,murine maintenance to � . •, q .
ensure that they operate as efficiently as possible.Al-
though maintenance requirements are site specific,a
«general relationship between cleaning needs and depths bf
I: imcnt has becn cstablishcd by the manufacturcc
Inspection of the Stormceptor interior should be done after
major storm events,particularly in the first year of opera-
tion.It is recommended that material in the treatment
chamber be pumped out by a vacuum tuck semiannually
or when the sediment and pollutant loads reach about 15
• percent of the total storage.If the unit is used for spill
containment,it should be pumped after the event is
contained Typical cleaning costs were estimated by the
manufacturer in 1998 to be$250,with disposal costs
3 - iA
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EASTERN LAND SURVEY ASSOCIATES, INC. JOB R IV" N/mW 9 �Q&c - 43,t&G r
Christopher R. Mello PLS SHEET NO, 2--) OF
104 Lowell Street CALCULATED BY V-y�
PEABODY, MA 01960• — DATE
(978) 531-8121 CHECKEDi�� DATE
SCALE
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4 os S
Drainage Capacity Calculations
Riverview Place-Salem,Ma
Sewer Pipes -- English Units
MR Tools/or Mndows
(11-12-2008, 13:24:40)
Flowrate Diameter Friction Slope Velocity
(cfs) (;n) O M (fpm_
2.31 12.00 0.011 0.30 2.94
2.73 12. 00 0.011 0.42 3.47
4.45 15.00 0. 011 0.34 3.63
4.83 15.00 0.011 0.40 3.93
2.92 12.00 0.011 0.48 3.71
2.56 12.00 0.011 0.37 3.26
6.36 12.00 0.011 2.28 8.10
5.40 15. 00 0.011 0.50 4.40
12.41 18. 00 0. 011 1.00 7.03
16.91 24.00 0. 011 0.40 5.38
•
3- tF�
JKAINAUt UbLWERAGE.-HYDRAULIC COMPUTATIONS-5
a, Cross- sectional For pi es ?a//
area of walerwoy — or ho/f- full
i — ,o= wetted perimeter R
4
R P=Hydraulic radius.
SECTION OF AH i OPEN CNANI IEL SECTION OF CIRCULAR PIPE
V=Avergge or Ineon ve/ocify in feet per ,second.
Q = a V-Dischorye of Pipe or channel in cubic feef per second (e. f.s.). ..
h = Coefficient of roughness ofpipe or chane/ aur/bce , see Table A-PS.18-68.
S =Slope of Hydraulic Gradient (wo%r surfoce in open channels or pipes not
under Pressure, some as s/ope Of chonne/ or pipe invert On/y when flow
;5 !Uniform in clonetant section.
FIG. A- HYDRAULIC ELEMENTS OF CHANNEL SECT IONS.
too
90
so
0
2 70 1-O ar
W
u
• a 60
v
3 so
0
LL 40
IL
30
C' 2
W 0
10
0
O 10 20 30 40 50 - 60 70 80 90 100 Ito 120
HYDRAULIC ELEMENTS
PER CENT OF VALUE FOR FULL SECTION (APPROXIMATE)
E AMP E.' Given : Disehor9e .120.i s through o pipe which has cap oc/ty flowing fu//
of /S e.f.s. of o ve%city of 7.o ff per sec. Required to fii�o' V/or Q. /2 e.f.s.
Percenfogr offu// dise/or�1s - - 8o% , Enter chart of 80% of r�o/ue
r.fu/iseef/on of H drou/ie E e - x -
y /em nfs, tired V //2.5,'� 7 7.9 t'f per sec.
116.5-VALLIES OF HYDRAULIC ELEMENTS OF CIRCULAR SECTION
FOR VARIOUS DEPTHS OF PLOW.
-
-3--1q
SECTION 4
ADDITIONAL SUBMISSIONS
DRAFT STORMWATER POLLUTION PREVENTION PLAN
• Notes regarding draft NPDES SWPPP
Riverview Place—Salem, MA.
Sections to be addressed following selection of a General Contractor:
1.2
5.1.1
5.2
6.1
6.3
8
Appendices:
Appendix B —Will be the 8 sheet Site Development Permit Plan
Appendix C—Most recent version will be attached following filing of NPDES NOI
Appendix D —Will be added once NPDES Notice of Intent is filed and acknowledged
•
•
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJEC"I`NAME and DATE
SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING
1.1 ProjecVSite Information
Instructions:
— In this section,you can gather some basic site information that will be helpful to you later when you file for
permit coverage.
— For more information,see Developing Your Stormwater Pollution Prevention Plan:A SWPPP Guide for
Construction Sites(also known as the SWPPP Guide), Chapter 2
— Detailed information on determining your site's latitude and longitude can be found at
www.epa.gov/npdes/stormwater/latlong
Project/Site Name: Riverview Place
Project Street/Location: 72 Flint Street, 67 and 71 Mason St.
City: Salem State: MA ZIP Code: 01970
County or Similar Subdivision: Essex County
Latitude/Longitude (Use one of three possible formats, and specify method)
Latitude: Longitude:
• 1. __° "N (degrees, minutes, seconds) 1. " W (degrees, minutes,
seconds)
2. __°_ . __'N (degrees, minutes, decimal) 2. __°_ W (degrees,minutes,
decimal)
3. 42. 5205 'N (decimal) 3. 70 . 9675 °W(decimal)
Method for determining latitude/longitude:
X USGS topographic map (specify scale: 1:25.000 ) ❑ EPA Web site ❑ GPS
❑ Other(please specify):
Is the project located in Indian country? X Yes ❑No
If yes, name of Reservation, or if not part of a Reservation, indicate "not applicable."
Is this project considered a federal facility? ❑ Yes X No
NPDES project or permit tracking number*:
*(This is the unique identifying number assigned to your project by your permitting authority after you have applied
for coverage under the appropriate National Pollutant Discharge Elimination System (NPDES)construction general
permit.)
EPA SWPPP Template, Version 1.1, September 17, 2007 1
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
11 1111"111111FIN-1 FIRM—111 111-I!pllppm;l-1 11,1111 191-1 ROW
• 1.2 Contact Information/Responsible Parties
Instructions:
— List the operator(s), project managers,stonnwater contact(s), and person or organization that prepared the
SWPPP. Indicate respective responsibilities,where appropriate.
— Also, list subcontractors expected to work on-site.Notify subcontractors of stonnwater requirements
applicable to their work.
— See SWPPP Guide, Chapter 2.B and EPA's Construction General Permit(CGP) Part 3, Subparts 3.2,
3.3.A, and 3A.A.
Operator(s):
Insert Company or Organization Name: Riverview Place LLC
InsertName: Michael O'Brien
Insert Address: 6 Cider Mill Road
Insert City, State, Zip Code: Peabody, MA. 01960
Insert Telephone Number: 978-979-4072
Insert Fax/Email:
Insert area of control (i£more than one operator at site):
Repeat as necessary
• Project Manager(s) or Site Supervisor(s):
Insert Company or Organization Name: To Be Determined
Insert Name:
Insert Address:
Insert City, State, Zip Code:
Insert Telephone Ntmiber:
Insert Fax/Email:
Insert area of control (if more than one operator at site):
Repeat as necessary
SWPPP Contact(s):
Insert Company or Organization Name: To Be Determined
Insert Name:
Insert Address:
Insert City, State, Zip Code:
Insert Telephone Number:
Insert Fax/Email:
Insert area of control (if more than one operator at site):
Repeat as necessary
EPA SWPPP Template, Version 1.1, September 17, 2007 2
Stormwater Pollution Prevention Plan(SWPPP)
INSERTPROJECT NAME and DATE
WNW --mogm-mimm—ppmempm
• This SWPPP was Prepared by:
Insert Company or Organization Name: Eastern Land Survey Associates, Inc.
Insert Name: James H. MacDowell, Clayton A. Morin, PE
Insert Address: 104 Lowell St.
Insert City, State, Zip Code: Peabody, MA. 01960
Insert Telephone Number: 978-531-8121
Insert Fax/Email: 978-531-5920
Subcontractor(s):
Insert Company or Organization Name: To Be Determined
Insert Name:
Insert Address:
Insert City, State, Zip Code:
Insert Telephone Number:
Insert Fax/Email:
Repeat as necessary
Emergency 24-Hour Contact:
Insert Company or Organization Name: To Be Determined
Insert Name:
• Insert Telephone Number:
1.3 Nature and Sequence of Construction Activity
Instructions:
— Brieflydescribe cnbe the nature of the construction activity and approximate time frames(one or more
paragraphs,depending on the nature and complexity of the project).
— For more information,see SWPPP Guide, Chapter 3.A. and EPA's CGP Part 3, Subparts 3.3.13.1 and 2,
and 3.4.A.
Describe the general scope of the work for the project, major phases of construction, etc:
The proposed site activities will consist of the following:
• Demolition of existing industrial buildings and removal of demolition debris to approved
locations.
• Final testing of on site soils and remediation in accordance with applicable Federal, State
and Local regulations.
• Site preparation, grading, driveway, parking area, utility and building construction for a
• 130 unit multi-family residential facility to be located within three buildings.
EPA SWPPP Template, Version 1.1, September 17, 2007 3
Stormwater Pollution Prevention Plan(SWPPP)
INSERTPROJECT NAME and DATE
• The project is expected to require two years to complete once construction has commenced.
What is the function of the construction activity?
X Residential ❑ Commercial ❑ Industrial ❑ Road Construction ❑ Linear Utility
❑ Other(please specify):
Estimated Project Start Date: 09/01 /2008
Estimated Project Completion Date: 09/01 / 2010
1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns
Instructions:
— Describe the existing soil conditions at the construction site including soil types, slopes and slope lengths,
drainage patterns, and other topographic features that might affect erosion and sediment control.
— Also, note any historic site contamination evident from existing site features and known past usage of the
site.
— This information should also be included on your site maps(See SWPPP Guide, Chapter 3.C.).
— For more information,see SWPPP Guide, Chapter 3.A and EPA's CGP Part 3, Subpart 3.3.C.
• Soil type(s): Urban UR
Slopes (describe current slopes and note any changes due to grading or fill activities):
Existing 0-15%, Proposed 1-15%, terracing due to new site design.
Drainage Patterns (describe current drainage patterns and note any changes dues to grading or fill
activities): Overland north to south into North River existing. Proposed—a new drainage
collection and treatment system will be constructed.
Vegetation: Sparse in existing condition—site is primarily covered by buildings and industrial
yard areas.
Other: Site has been used for a variety of industrial activities since the 1800's.
•
EPA SWPPP Template, Version 1.1, September 17, 2007 4
Stormwater Pollution Prevention Plan(SWPPP)
INSERTPROJECT NAME and DATE
1.5 Construction Site Estimates
Instructions:
— Estimate the area to be disturbed by excavation,grading,or other construction activities, including
dedicated off-site borrow and fill areas.
— Calculate the percentage of impervious surface area before and after construction
— Calculate the runoff coefficients before and after construction.
— For more information,see SWPPP Guide, Chapter 3.A and EPA's CGP Part 3, Subpart U.B.
The following are estimates of the construction site:
Total project area: 4.3 acres
Construction site area to be disturbed: 4.2 acres
Percentage impervious area before construction: 82 %
Runoff coefficient before construction: 95
Percentage impervious area after construction: 70
Runoff coefficient after construction: 94
1.6 Receiving Waters
• Instructions:
— List the waterbody(s)that would receive stormwater from your site, including streams, rivers, lakes,coastal
waters, and wetlands. Describe each as clearly as possible,such as Mill Creek, a tributary to the Potomac
River, and so on.
— Indicate the location of all waters, including wetlands,on the site map. For more information,see EPA's
CGP Part 3, Subparts 3.3.8.4 and 3.3.C.6.
— Note any stream crossings, if applicable.
— List the storm sewer system or drainage system that stormwater from your site could discharge to and the
waterbody(s)that it ultimately discharges to.
— If any of the waterbodies above are impaired and/or subject to Total Maximum Daily Loads(TMDLs),
please list the pollutants causing the impairment and any specific requirements in the TMDL(s)that are
applicable to construction sites. Your SWPPP should specifically include measures to prevent the
discharge of these pollutants. For more information,see EPA's CGP Part 1, Subpart 1.3.C.5 and Part 3,
Subpart 3.14.
— For more information,see SWPPP Guide, Chapter 3.A and 3.B.
— Also,for more information and a list of TMDL contacts and links by state,visit
www.epa,gov/npdes/stormwater/tmdl.
Description of receiving waters: North River (tidal reach in an open canal).
` Description of storm sewer systems: None in existing condition. A full collection and treatment
system will be constructed.
EPA SWPPP Template,Version 1.1, September 17, 2007 5
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DA IT
Description of impaired waters or waters subject to TMDLs: None listed on Massachusetts
website.
Other:
1.7 Site Features and Sensitive Areas to be Protected
Instructions:
— Describe unique site features including streams,stream buffers, wetlands,specimen trees, natural
vegetation,steep slopes,or highly erodible soils that are to be preserved.
— Describe measures to protect these features.
— Include these features and areas on your site maps.
— For more information,see SWPPP Guide, Chapter 3.A and 3.B.
Description of unique features that are to be preserved: Bank of the North River.
Describe measures to protect these features: Install erosion control prior to commencement of
any sitework as depicted on the site plan.
• 1.8 Potential Sources of Pollution
Instructions:
— Identify and list all potential sources of sediment,which may reasonably be expected to affect the quality of
stormwater discharges from the construction site.
— Identify and list all potential sources of pollution,other than sediment, which may reasonably be expected
to affect the quality of stormwater discharges from the construction site.
— For more information,see SWPPP Guide, Chapter 3.A and EPA's CGP Part 3, Subpart 3.1.B.
Potential sources of sediment to stormwater runoff:
Exposed earth areas during construction, stockpiles,newly graded areas.
Potential pollutants and sources, other than sediment, to stormwater runoff:
INSERT TEXT OR USE TABLE BELOW
I •
EPA SWPPP Template, Version 1.1, September 17, 2007 6
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DA'T'E
• Trade Name Material Stormwater Pollutants Location
Portable Toilets Bacteria,Parasites,Viruses Staging Area
Fertilizer Nitrogen, Phosphorous Newly Seeded Areas
Asphalt Oil, Petroleum, Distillates Parking Lots and Driveways
Concrete Lime, Sand,PH,Chromium Building,Foundations,Walks
Glue,Adhesives Polymers,Epoxies Construction Building
Gasoline Benzene,Ethyl Benzene,Toluene,
Xylene,MTBE Staging Area
Diesel Fuel Petroleum Distillate,Oil and Staging Area
Grease,Naphthalene,Xylenes
Hydraulic Oil/Fluids Mineral Oil Staging Area
Antifreeze/Coolant Ethylene Glycol,Propylene Glycol, Staging Areas
Heavy Metals
• 1.9 Endangered Species Certification
Instructions:
— Before beginning construction,determine whether endangered or threatened species or their critical
habitats are on or near your site.
— Adapt this section as needed for state or tribal endangered species requirements and, if applicable,
document any measures deemed necessary to protect endangered or threatened species or their critical
habitats.
— For more information on this topic,see SWPPP Guide, Chapter 3.6 and EPA's CGP Part 1, Subpart
1.3.C.6 and Appendix C.
— Additional information on Endangered Species Act(ESA) provisions for EPA's Construction General
Permit is at www.epa.gov/npdes/stormwater/esa
Are endangered or threatened species and critical habitats on or near the project area?
❑ Yes ®No
Describe how this determination was made:
Massachusetts Natural Heritage Database, 2007.
If yes, describe the species and/or critical habitat:
INSERT TEXT HERE
•
EPA SWPPP Template, Version 1.1, September 17, 2007 7
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECTNAME and DATE
W. MR FROMMIN111 IF - 11 RMEERAMP
• If yes, describe or refer to documentation that determines the likelihood of an impact on
identified species and/or habitat and the steps taken to address that impact. (Note, if species are
on or near your project site, EPA strongly recommends that the site operator work closely with
the appropriate field office of the U.S. Fish and Wildlife Service or National Marine Fisheries
Service. For concerns related to state or tribal listing of species,please contact a state or tribal
official.)
INSERT TEXT HERE
1.10 Historic Preservation
Instructions:
— Before you begin construction,you should review federal and any applicable state, local,or tribal historic
preservation laws and determine if there are historic sites on or near your project. If so, you might need to
make adjustments to your construction plans or to your stormwater controls to ensure that these historic
sites are not damaged.
— For more information,see SWPPP Guide, Chapter 3.B or contact your state or tribal historic preservation
officer.
Are there any historic sites on or near the construction site?
• ❑ Yes ®No
Describe how this determination was made:
Consultation with local Historical Association.
If yes, describe or refer to documentation that determines the likelihood of an impact on this
historic site and the steps taken to address that impact.
INSERT TEXT HERE
1.11 Applicable Federal, Tribal, State or Local Programs
Instructions:
— Note other applicable federal,tribal,state or local soil and erosion control and stormwater management
requirements that apply to the construction site.See EPA's CGP Part 3.9.
IN TEXT HERE
•
EPA SWPPP Template, Version 1.1, September 17, 2007 8
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
• 1.12 Maps
Instructions:
— Attach site maps. For most projects, a series of site maps is recommended. The first should show the
undeveloped site and its current features. An additional map or maps should be created to show the
developed site or for more complicated sites show the major phases of development.
These maps should include the following:
— Direction(s)of stormwater flow and approximate slopes before and after major grading activities;
— Areas and timing of soil disturbance;
— Areas that will not be disturbed;
— Natural features to be preserved;
— Locations of major structural and non-structural BMPs identified in the SWPPP;
— Locations and timing of stabilization measures;
— Locations of off-site material,waste, borrow,or equipment storage areas;
— Locations of all waters, including wetlands;
— Locations where stormwater discharges to a surface water;
— Locations of storm drain inlets; and
— Areas where final stabilization has been accomplished.
— For more information,see SWPPP Guide, Chapter 3.0 and EPA's CGP Part 3, Subparts 3.1.B.1 and
U.C.
• Include the site maps with the SWPPP.
•
EPA SWPPP Template,Version 1.1, September 17, 2007 9
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
SECTION 2: EROSION AND SEDIMENT CONTROL BMPS
Instructions:
— Describe the BMPs that will be implemented to control pollutants in stonnwater discharges. For each
major activity identified,do the following
✓ Clearly describe appropriate control measures.
✓ Describe the general sequence during the construction process in which the measures will be
implemented.
✓ Describe the maintenance and inspection procedures that will be used for that specific BMP.
✓ Include protocols,thresholds, and schedules for cleaning, repairing,or replacing damaged or failing
BMPs.
✓ Identify staff responsible for maintaining BMPs.
✓ (If your SWPPP is shared by multiple operators, indicate the operator responsible for each BMP.)
— Categorize each BMP under one of the following 10 areas of BMP activity as described below:
2.1 Minimize disturbed area and protect natural features and soil
2.2 Phase Construction Activity
2.3 Control Stormwater flowing onto and through the project
2.4 Stabilize Soils
2.5 Protect Slopes
• 2.6 Protect Storm Drain Inlets
2.7 Establish Perimeter Controls and Sediment Barriers
2.8 Retain Sediment On-Site and Control Dewatering Practices
2.9 Establish Stabilized Construction Exits
2.10 Any Additional BMPs
— Note the location of each BMP on your site map(s).
— For any structural BMPs, you should provide design specifications and details and refer to them.Attach
them as appendices to the SWPPP or within the text of the SWPPP.
— For more information,see SWPPP Guide,Chapter 4 and EPA's CGP Part 3, Subparts 3.3.6.2 and 3A A-
D, and Part 4, Subpart 4.5.
— Consult your state's design manual or one of those listed in Appendix D of the SWPPP Guide.
— For more information or ideas on BMPs,see EPA's National Menu of BMPs
hftp://www.epa.gov/npdes/stormwater/menuofbmps
•
EPA SWPPP Template, Version 1.1, September 17, 2007 10
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECTNAME and DATE
• 2.1 Minimize Disturbed Area and Protect Natural Features and
Soil
Instructions:
— Describe the areas that will be disturbed with each phase of construction and the methods(e.g.,signs,
fences)that you will use to protect those areas that should not be disturbed. Describe natural features
identified earlier and how each will be protected during construction activity.Also describe how topsoil will
be preserved. Include these areas and associated BMPs on your site map(s)also. (For more information,
see SWPPP Guide, Chapter 4, ESC Principle 1.)
— Also,see EPA's Preserving Natural Vegetation BMP Fact Sheet at
www.epa.00v/nodes/stormwater/menuofbmps/construction/perserve veo
Existing Features—With the exception of a foot wide strip along the easterly boundary, virtually
all of the site clearing and preparation will be done at once as a result of the need for demolition
of the existing buildings and anticipated remediation measures.
BMP Description—The area of existing vegetation to be preserved is delineated on the site plan
in Appendix B. The area will be marked in the field prior to commencement of demolition work
by temporary plastic orange mesh fencing. Perimeter trees which are to be preserved will be
clearly marked with a distinct color of surveyor's plastic ribbon. Construction equipment and
vehicles will be kept out of areas to be preserved.
• Installation Schedule—Areas of existing vegetation to be preserved shall be delineated with
orange mesh fence and trees marked with surveyor's ribbon prior to commencement of
demolition.
Maintenance and Inspection—Areas of vegetation preservation shall be inspected weekly to
detennine stability of delineation fencing and tree marking.
Responsible Staff—
Topsoil—Minimal topsoil is anticipated to exist on site and evidenced by existing development.
BMP Description—Any topsoil stripped from areas of proposed construction shall be stockpiled
in the project staging area for screening, testing, and if clean, re-use on the site. Stockpiles will
be kept out of areas of concentrated runoff flow and protected from erosion by perimeter silt
fencing. Stockpile surfaces shall be roughened by equipment tracking.
Installation Schedule—Topsoil stockpiles shall be established in the project staging area as site
grading proceeds. Stockpiles will be protected with temporary erosion controls, once placed.
Maintenance and Inspection—Stockpile areas will be inspected weekly and following storm
• events. Any observed areas of erosion shall be stabilized immediately.
EPA SWPPP Template, Version 1.1, September 17, 2007 11
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
RPM
Responsible Staff:
2.2 Phase Construction Activity
Instructions:
— Describe the intended construction sequencing and timing of major activities, including any opportunities
for phasing grading and stabilization activities to minimize the overall amount of disturbed soil that will be
subject to potential erosion at one time. Also, describe opportunities for timing grading and stabilization so
that all or a majority of the soil disturbance occurs during a time of year with less erosion potential(i.e.,
during the dry or less windy season). (For more information,see SWPPP Guide, Chapter 4, ESC Principle
2.) It might be useful to develop a separate,detailed site map for each phase of construction.
— Also, see EPA's Construction Sequencing BMP Fact Sheet at
http://www.epa.gov/nodes/stormwater/menuofbml)s/construction/cons seol
Given the necessity of complete demolition of existing buildings on site,the small size of the site
(4.3 acres) and the interrelationship of the various site improvements, phasing of construction in
Riverview Place is not considered as a practical BMP.
2.3 Control Stormwater Flowing onto and through the Project
• Instructions:
— Describe structural practices(e.g.,diversions, berms,ditches, storage basins)including design
specifications and details used to divert flows from exposed soils, retain or detain flows,or otherwise limit
runoff and the discharge of pollutants from exposed areas of the site. (For more information,see SWPPP
Guide, Chapter 4, ESC Principle 3.)
Grading characteristics of the site are such that small quantities of runoff may enter the site from
the industrial site located east of the site and residential properties north and west of the site.
BMP Description: Existing swale near easterly property line. The existing swale receives runoff
from a portion of the Mason Realty Trust site, located east of Riverview Place. Immediately
following demolition activities, the swale will be cleaned of debris and deadfall and maintained
in perpetuity. The inlet end outlet pipe (outlet is visible in the wall of the North River Canal)
will be located and cleaned. A headwall will be installed, if appropriate.
Installation Schedule: The west side of the swale will be protected with a silt barrier
prior to commencement of other work on site. Following
demolition,the swale will be cleaned of any accumulated debris
and deadfall, the inlet to the drain pipe located and the drain
cleaned.
Maintenance and The swale will be inspected weekly and following storm events.
• Inspection: Any debris or sediment buildup will be removed from the swale.
Responsible Staff:
EPA SWPPP Template, Version 1.1, September 17, 2007 12
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
__4104110111114010 IMPM,11
BMP Description: Diversion swale northwest and west portion of site. A diversion Swale will
be constructed along the northwest and west boundaries of the site to intercept runoff from
existing residential properties on Mason and Flint Streets. The swale will be maintained until the
onsite drainage system is constructed and operating. The swale will be routed through an on-site
sediment basin prior to discharge into the North River.
Installation Schedule: The diversion swale will be installed prior to commencement of
sitework in the west portion of the site.
Maintenance and The diversion swale will be inspected weekly and following
Inspection: storm events. Any debris will be removed. If any breaches
develop in the swale embankment,they will be repaired
immediately.
Responsible Staff:
Repeat as needed
2.4 Stabilize Soils
Instructions:
— Describe controls(e.g., interim seeding with native vegetation, hydroseeding)to stabilize exposed soils
where construction activities have temporarily or permanently ceased. Also describe measures to control
dust generation.Avoid using impervious surfaces for stabilization whenever possible. (For more
information,see SWPPP Guide, Chapter 4, ESC Principle 4, EPA's CGP Part 3,Subpart 3.13.D.)
Also,see EPA's Seeding BMP Fact Sheet at
www.epa.gov/npdes/stormwater/menuofbmps/construction/seeding
BMP Description:Hydroseeding will be utilized for temporary stabilization of any areas where
construction is to be ceased for more than 14 days. The hydroseed mix shall consist of wood
fibers, seed (slope mix) fertilizer and stabilizing emulsion. Application rates shall be at a rate of
8 lbs. per acre. Seeding will be performed at times of the year when vegetation is more likely to
be established. Any areas requiring winter stabilization shall be hydroseeded no later than
October 1St
❑Permanent ® Temporary
Installation Schedule: Temporary stabilization will be applied to areas of the site where
activity will temporarily cease for more than 14 days.
Maintenance and Stabilized areas shall be inspected weekly and following storm
Inspection: events. Until dense vegetation has established, any bare areas
shall be reseeded, fertilized and mulched or re-hydroseeded.
Responsible Staff.•
EPA SWPPP Template, Version 1.1, September 17, 2007 13
Stormwater Pollution Prevention Plan(SWPPP)
MPE INSERT PROJECT NAME and DATE
• BMP Description: Permanent stabilization shall be done upon final grading of soil-surfaced
landscaped areas, but in no case more than 14 days after completion following placement and
grading of topsoil.
Final seeding of lawn areas shall be done mechanically. Seed mix shall be as specified by the
landscape architect. Trees and shrubs shall be native, non-invasive species and shall be installed
in accordance with the nursery suppliers recommendations.
® Permanent ❑ Temporary
Installation Schedule: Permanent stabilization shall be done within 14 days following
the completion of all other site activities, except final paving.
Maintenance and All newly landscaped areas shall be inspected weekly and
Inspection: following storm events. Any areas of failure shall be re-
landscaped immediately. Permanently stabilized areas shall be
monitored until final stabilization is attained.
Responsible Staff.•
BMP Description: Dust shall be controlled by wetting with water using a pressure distribution
truck or sprinklers. Only potable water shall be used,the source of which shall be approved by
the City of Salem. The typical application rate shall be 500 gallons per acre and minimized to
avoid ponding or runoff generation.
• ❑ Permanent ® Temporary
Installation Schedule: Dust control will be performed as needed during site grading
operations and during dry windy conditions (actual or forecast
winds of greater than 20 miles per hour). Spraying of potable
water shall not be done more than 3 times daily in June-
September nor more than once daily at other times unless site or
climatic conditions demand otherwise.
Maintenance and At least one pressure distribution dewatering truck or trailer shall
Inspection: be kept on site. The unit shall have a positive shutoff valve to
prevent excessive watering.
Responsible Staff.-
2.5 Protect Slopes
Instructions:
— Describe controls(e.g.,erosion control blankets,tackifiers)including design specifications and details that
will be implemented to protect all slopes. (For more information, see SWPPP Guide, Chapter 4, ESC
Principle 5.)
— Also,see EPA's Geotextiles BMP Fact Sheet at
• www.eoa.00v/nodes/stormwater/menuofbmos/construction/aeotextiles
EPA SWPPP Template, Version 1.1, September 17, 2007 14
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
BMP Description: Geotextile erosion control blankets will be used to stabilize slopes in areas
which are steeper than 3 to 1 and proposed to be grassed surface. The entire slope shall be
covered with the blanket following final grading and installation of seed, fertilizer and mulch.
The leading edge of the blanket will be anchored in a 12 inch deep by 6 inch wide trench on the
uphill side of the slope. The blanket will be rolled slowly downslope and stapled at 12 inch
intervals. If multiple blankets are used,they shall be overlapped a minimum of two inches and
stapled along the overlapped edge.
If there are conflicts between the above installation procedures and the manufacturer's
recommendations,the manufacturer's procedures shall be followed.
Installation Schedule: Erosion control blankets shall be installed once slopes have been
graded and seeded.
Maintenance and Erosion control blankets shall be inspected weekly and
Inspection: immediately following storm events. If any cracks,tears or
breaches are observed,the section shall be repaired or replaced
immediately. Any areas where the blanket is not in close contact
with the ground will be repaired or replaced. Inspection and
maintenance will continue until permanent vegetative
stabilization of the slope has occurred.
Responsible Staff.•
• BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
Repeat as needed
2.6 Protect Storm Drain Inlets
Instructions:
— Describe controls(e.g., inserts, rock-filled bags, or block and gravel)including design specifications and
details that will be implemented to protect all inlets receiving stonmwater from the project during the entire
project. (For more information,see SWPPP Guide, Chapter 4, ESC Principle 6.)
— Also, see EPA's Storm Drain Inlet Protection BMP Fact Sheet at
www,epa.gov/npdes/stormwater/menuofbmps/construction/storm drain
•
EPA SWPPP Template, Version 1.1, September 17, 2007 15
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECTNAW and DATE
�- 1, 19111111"91191
• BMP Description: Storm Drain Inlet Protection prior to Paving. A siltation barrier shall be
placed around catch basin inlets. The barrier will consist of properly anchored silt socks or stone
filters. As an alternative, an impervious membrane may be installed beneath the catch basin
grating.
Installation Schedule: Once catch basins have been constructed, a silt barrier shall be
installed around each one until pavement base course has been
placed.
Maintenance and See Section 2, Part 2.7.
Inspection:
Responsible Staff.-
BMP Description: Storm Drain Inlet Protection after Pavement Construction. Silt barriers made
of filter stone or silt socks shall be installed to protect each catch basin.
Installation Schedule: Silt protection shall be installed once the base course of pavement
has been constructed and removed just prior to installation of the
top course of pavement.
Maintenance and Silt protection BMP's will be inspected weekly and immediately
Inspection: following storm events. If external barriers are used, silt will be
removed when it reaches 1/3 the height(or capacity) of the
barrier.
• Responsible Staff.•
2.7 Establish Perimeter Controls and Sediment Barriers
Instructions:
— Describe structural practices(e.g.,silt fences or fiber rolls) including design specifications and details to
filter and trap sediment before it leaves the construction site. (For more information,see SWPPP Guide,
Chapter 4, ESC Principle 7.)
— Also see, EPA's Silt Fence BMP Fact Sheet at
www.epa.gov/nodes/stormwater/menuofbmps/construction/silt fences or Fiber Rolls BMP Fact Sheet at
www.eoa.00v/nodes/storrnwater/menuofbmps/construction/fiber rolls
BMP Description: Silt Fence. Silt fences shall be installed around the area of proposed work as
shown on the Site Plan in Appendix B and around stockpiles of soil. The silt fence shall consist
of staked haybales and fabric silt fence as detailed on Sheet 8 of the Site Plan.
Installation Schedule: The silt fences shall be installed wherever feasible prior to
commencement of demolition. Any sections of silt fence
damaged during demolition shall be replaced immediately. Silt
fence shall be installed around soil stockpiles immediately after
their placement.
I •
EPA SWPPP Template, Version 1.1, September 17, 2007 16
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATL
• Maintenance and Silt fences will be inspected weekly and immediately following
Inspection: storm events to ensure that it is stable and functioning as
intended. Any gaps or tears in the fabric fence shall be repaired
immediately. When sediment reaches one-third the height of the
silt fence, it shall be removed and disposed of lawfully. Prior to
removal of silt fences from the site, all sediment shall be
removed. It is likely that the silt fence will require replacement
every 12 to 18 months.
Responsible Staff.
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
Repeat as needed
2.8 Retain Sediment On-Site
• Instructions:
— Describe sediment control practices(e.g., sediment trap or sediment basin), including design
specifications and details(volume,dimensions,outlet structure)that will be implemented at the
construction site to retain sediments on-site. (For more information,see SWPPP Guide, Chapter 4, ESC
Principle S or EPA's CGP Part 3.13.E.)
— Also,see EPA's Sediment Basin BMP Fact Sheet at
www.epa.gov/nodes/stormwater/menuofbmps/Construction/sediment basins
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
BMP Description.-
Installation
escription:Installation Schedule:
Maintenance and
Inspection:
• Responsible Staff.•
EPA SWPPP Template, Version 1.1, September 17, 2007 17
Stormwater Pollution Prevention Plan(SWPPP)
NIPW INSERT PROJECT NAME and DATE
• Repeat as needed
2.9 Establish Stabilized Construction Exits
Instructions: .
— Describe location(s)of vehicle entrance(s)and exit(s), procedures to remove accumulated sediment off-
site(e.g.,vehicle tracking), and stabilization practices(e.g.,stone pads or wash racks or both)to minimize
off-site vehicle tracking of sediments and discharges to stonnwater. (For more information,see SWPPP
Guide, Chapter 4, ESC Principle 9 and EPA's CGP Part 3, Subparts 3.4.G and 3.13.B.)
— Also,see EPA's Construction Entrances BMP Fact Sheet at
www.epa.gov/npdes/stormwater/menuofbmps/construction/cons entrance
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
BMP Description:
• Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
Repeat as needed
2.10 Additional BMPs
Instructions:
— Describe additional BMPs that do not fit into the above categories.
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
BMP Description:
EPA SWPPP Template, Version 1.1, September 17, 2007 18
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
lip FROM— RNW1119 OW
• Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
Repeat as needed
SECTION 3: GOOD HOUSEKEEPING BMPS
Instructions:
— Describe the key good housekeeping and pollution prevention (P2)measures that will be implemented to
control pollutants in stormwater.
— Categorize each good housekeeping and pollution prevention (P2) BMP under one of the following seven
categories:
3.1 Material Handling and Waste Management
3.2 Establish Proper Building Material Staging Areas
3.3 Designate Washout Areas
3.4 Establish Proper EquipmenWehicle Fueling and Maintenance Practices
3.5 Allowable Non-Stormwater Discharges and Control EquipmenWehicle Washing
• 3.6 Spill Prevention and Control Plan
3.7 Any Additional BMPs
— For more information,see SWPPP Guide, Chapter 5 and EPA's CGP Part 3; Subparts 3.4.(F), (G), (H),
and (1).
— Consult your state's design manual or resources in Appendix D of the SWPPP Guide.
— For more information or ideas on BMPs,see EPA's National Menu of BMPs
hffp://www epa aov/npdes/stormwater/menuofbmps
3.1 Material Handling and Waste Management
Instructions:
— Describe measures(e.g.,trash disposal,sanitary wastes, recycling, and proper material handling)to
prevent the discharge of solid materials to receiving waters,except as authorized by a permit issued under
section 404 of the CWA(For more information,see SWPPP Guide, Chapter 5, P2 Principle 1.)
— Also,see EPA's General Construction Site Waste Management BMP Fact Sheet at
www.epa.gov/npdes/Stormwater/menuofbmps/construction/cons wasteman
•
EPA SWPPP Template, Version 1.1, September 17, 2007 19
Stor nwater Pollution Prevention Plan(SWPPP)
INSERT PROJEC"f NAME and DATE
g �
• BMP Description: All waste materials will be gathered daily and disposed of into metal trash
dumpsters located on site. Only construction debris and trash shall be deposited in dumpsters.
All construction personnel will be instructed as to the permitted procedures for waste material
disposal. The procedures shall be posted in writing at the site superintendent's office trailer.
The site superintendent shall be responsible for seeing that practices are followed.
Installation Schedule: Trash dumpsters shall be installed as soon as work has
commenced.
Maintenance and The dumpsters will be inspected weekly and immediately
Inspection: following storm events. Dumpsters shall be emptied weekly by
private contractor and disposed of at an approved location. If
trash load exceeds this schedule, dumpsters will be emptied more
frequently.
Responsible Staff: Site Superintendent
BMP Description: Hazardous Waste. Any hazardous waste materials such as oil filters,
petroleum products,paint, solvents and equipment maintenance fluids will be stored in sealed
original labeled containers in a designated hazardous materials storage area on site. Storage of
such materials will be on spill pallets or enclosed site containers. Such materials will not be
disposed of in dumpsters. Disposal of hazardous materials shall be in accordance with all
• applicable Local, State and Federal regulations. All construction personnel will be instructed as
to the permitted procedures for waste material disposal. The procedures shall be posted, in
writing, at the site superintendent's office trailer. The site superintendent shall be responsible for
seeing that practices are followed.
Installation Schedule:
Maintenance and Hazardous material storage areas shall be inspected weekly and
Inspection: following storm events. Storage area(s) shall be kept well
organized, clean and equipped with sufficient cleanup supplies as
required for the materials being stored. Material inventories,
material safety data sheets and emergency contact numbers shall
be maintained in the site superintendent's office trailer.
Responsible Staff. Site Superintendent
BMP Description: Sanitary Waste. Temporary sanitary facilities (portable toilets)will be
provided on the site. Portable toilets will not be located in concentrated runoff flow paths or
traffic areas. Collection pans will be provided beneath toilets as a secondary containment
mechanism.
Installation Schedule:
Maintenance and Sanitary waste shall be collected by private contractor in
Inspection: accordance with their customary collection schedule. Toilets will
be inspected by that Contractor on a weekly basis for evidence of
• leaking holding tanks. Any toilets with leaking tanks shall be
removed immediately from the site.
EPA SWPPP Template,Version 1.1, September 17, 2007 20
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
• Responsible Staff. Site Superintendent
BMP Description: Recycling. Recyclable construction scrap such as pallets, cardboard and other
recyclable containers shall be disposed of in a designated recycling dumpster. The dumpster
shall have a secure water tight cover and be placed on site away from runoff flow paths.
All construction personnel will be instructed as to the permitted procedures for waste material
disposal. The procedures shall be posted, in writing, at the site superintendent's office trailer.
The site superintendent shall be responsible for seeing that practices are followed.
Installation Schedule: The designated recycling dumpster shall be installed upon
commencement of construction activities.
Maintenance and The recycling dumpster shall be inspected weekly and following
Inspection: storm events. The recycling dumpster will be emptied when
filled, but in no case less than monthly.
Responsible Staff. Site Superintendent
3.2 Establish Proper Building Material Staging Areas
Instructions:
— Describe construction materials expected to be stored on-site and procedures for storage of materials to
• minimize exposure of the materials to stormwater.(For more information,see SWPPP Guide, Chapter 5,
P2 Principle 2 and EPA's CGP Part 3A.H.)
BMP Description: Construction equipment and maintenance supplies will be stored in the
project staging area. Hand tools, small parts and the like will be stored in a site shed, watertight
shipping container within proposed buildings or a trailer. Hazardous materials shall be stored as
described in Section 3.1.
Soil stockpiles will be maintained in a designated staging area until such are removed or
distributed in connection with site grading activities. Stockpiles will not be placed in areas of
runoff concentration and will be protected with erosion control BMP's.
Materials used in connection with site utility construction, such as pipe, manholes and fittings,
shall be stored in the project staging area. Building materials used to construct new buildings
shall be stored in designated staging areas. Such materials should be stored on wood blocks in
order to minimize contact with surface runoff.
Installation Schedule: The project staging and materials storage area will be designated
prior to commencement of construction activities and expanded in
accordance with the project demands. Materials storage areas for
each building will be designated following rough grading and
foundation construction.
EPA SWPPP Template, Version 1.1, September 17, 2007 21
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
14R@
Maintenance and Storage areas will be inspected weekly and following storm
Inspection: events. Perimeter controls, covers and liners will be repaired or
replaced as needed to maintain proper functioning. Storage areas
will be kept in an organized manner.
Responsible Staff:
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
Repeat as needed
3.3 Designate Washout Areas
Instructions:
Describe location(s)and controls to eliminate the potential for discharges from washout areas for concrete
mixers, paint, stucco, and so on. (For more information, see SWPPP Guide, Chapter 5, P2 Principle 3.)
— Also, see EPA's Concrete Washout BMP Fact Sheet at
www.epa.00v/npdes/stormwater/menuofbmps/construction/concrete wash
BMP Description: Designated temporary below grade concrete washout areas will be designated
for each proposed building as the project progresses. The washout areas will be a minimum of
10 feet square and 3 feet deep, lined with a 10 mil thick impervious liner. Concrete delivery
operators will be advised of the washout area. Concrete washout areas shall not be located in
runoff paths nor within 50 feet of catch basins.
Concrete will not be placed nor trucks washed out during or immediately prior to an anticipated
rainfall event. Excess concrete and washout slurry will be discharged into the designated
washout area or removed from the site. When a washout area is no longer needed, it will be
cleaned out, materials removed and disposed of as described below, backfilled, graded and
stabilized.
Installation Schedule: Washout areas will be constructed for each proposed building
prior to commencement of foundation installation.
Maintenance and Washout areas shall be inspected daily when concrete deliveries
Inspection: are occurring. Inspection shall include liner stability,proper use
of washout area and cleanout when the area is filled to 75 percent
of its capacity.
• Responsible Staff.
EPA SWPPP Template, Version 1.1, September 17, 2007 22
Stormwater Pollution Prevention Plan(SWPPP)
INSERTPROJECT NAME and DATE
o
• BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff:
Repeat as needed
3.4 Establish Proper EquipmentNehicle Fueling and
Maintenance Practices
Instructions:
— Describe equipment/vehicle fueling and maintenance practices that will be implemented to control
pollutants to stonnwater(e.g.,secondary containment,drip pans, and spill kits)(For more information, see
SWPPP Guide, Chapter 5, P2 Principle 4.)
— Also, see EPA's Vehicle Maintenance and Washing Areas BMP Fact Sheet at
www.epa.gov/npdes/stormwater/menuofbmps/construction/vehicile maintain
• BMP Description: Vehicle/Equipment Fueling and Maintenance. (Discuss with General
Contractor, maintenance limited to routine activities).
Installation Schedule: Equipment and vehicle maintenance and fueling practices will be
implemented at the time of commencement of construction
activities.
Maintenance and (Discuss w/Contractor)
Inspection:
Responsible Staff.•
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
Repeat as needed
•
EPA SWPPP Template, Version 1.1, September 17, 2007 23
Stormwater Pollution Prevention Plan(SWPPP)
INSERTPROJECT NAME and DATE
• 3.5 Control EquipmenWehicle Washing
Instructions:
— Describe equipment/vehicle washing practices that will be implemented to control pollutants to stormwater.
(For more information,see SWPPP Guide, Chapter 5, P2 Principle 5.)
— Also, see EPA's Vehicle Maintenance and Washing Areas BMP Fact Sheet at
www,epa.00v/nodes/stormwater/menuofbmps/construction/vehicile maintain
BMP Description: (Discuss with Contractor, likely will not be allowed on site).
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
• Repeat as needed
3.6 Spill Prevention and Control Plan
Instructions:
— Describe the spill prevention and control plan to include ways to reduce the chance of spills,stop the
source of spills,contain and clean up spills,dispose of materials contaminated by spills, and train
personnel responsible for spill prevention and control. (For more information,see SWPPP Guide,Chapter
5, P2 Principle 6 and EPA's CGP Paris 4.3 and 4.4.)
— Also,see EPA's Spill Prevention and Control Plan BMP Fact sheet at
www.epa.00v/npdes/stormwater/menuofbmps/construction/spill control
Spill Prevention and Control Procedures - BMP Description:
a. Employee Training—all employees will be trained as to procedures to be followed relative to
spill prevention and control.
b. Vehicle Maintenance—major vehicle and equipment maintenance will be accomplished
offsite. Vehicles and equipment will be checked for leaking oil, fuel or other fluids. Such leaks
shall be repaired immediately.
• c. Hazardous Material Storage—hazardous materials shall be stored in accordance with Section
3.1 and all applicable regulatory requirements.
EPA SWPPP Template, Version 1.1, September 17, 2007 24
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DA"fE
3.7 Any Additional BMPs
Instructions:
— Describe any additional BMPs that do not fit into the above categories. Indicate the problem they are
intended to address.
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
• Repeat as needed
•
EPA SWPPP Template, Version 1.1, September 17, 2007 25
Stormwater Pollution Prevention Plan(SWPPP)
INSERTPROJECT'NAME and DATE
• 3.8 Allowable Non-Stormwater Discharge Management
Instructions:
— Identify all allowable sources of non-stormwater discharges that are not identified. The allowable non-
stormwater discharges identified in Part 1.3.B of EPA's CGP include
✓ Discharges from fire-fighting activities
✓ Fire hydrant flushings
✓ Waters used to wash vehicles where detergents are not used
✓ Water used to control dust in accordance with EPA's CGP, Part 3, Subpart 3.4.G
✓ Potable water including uncontaminated water line flushings
✓ Routine external building wash down that does not use detergents
✓ Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred
(unless all spilled material has been removed)and where detergents are not used
✓ Uncontaminated air conditioning or compressor condensate
✓ Uncontaminated ground water or spring water
✓ Foundation or footing drains where flows are not contaminated with process materials such as
solvents
✓ Uncontaminated excavation dewatering
✓ Landscape irrigation
— Identify measures used to eliminate or reduce these discharges and the BMPs used to prevent them from
• becoming contaminated.
— For more information,see SWPPP Guide, Chapter 3.A or EPA's CGP Part 1.3.B and 3.5.
List allowable non-stormwater discharges and the measures used to eliminate or reduce them and to prevent them
from becoming contaminated:
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
Repeat as needed
•
EPA SWPPP Template,Version 1.1, September 17, 2007 26
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
mmnr
SECTION 4: SELECTING POST-CONSTRUCTION BMPs
Instructions:
— Describe all post-construction stormwater management measures that will be installed during the
construction process to control pollutants in stormwater discharges after construction operations have
been completed. Examples of post-construction BMPs include the following:
✓ Biofilters
✓ Detention/retention devices
✓ Earth dikes,drainage swales,and lined ditches
✓ Infiltration basins
✓ Porous pavement
✓ Other proprietary permanent structural BMPs
✓ Outlet protection/velocity dissipation devices
✓ Slope protection
✓ Vegetated strips and/or swales
— Identify any applicable federal,state, local,or tribal requirements for design or installation.
— Describe how low-impact designs or smart growth considerations have been incorporated into the design.
— For any structural BMPs, you should have design specifications and details and refer to them. Attach
them as appendices to the SWPPP or within the text of the SWPPP.
— For more information on this topic,see your state's stormwater manual.
• — You might also want to consult one of the references listed in Appendix D of the SWPPP Guide and EPA's
CGP Part 3, Subparts 3.4.E and 3.9.
Visit the post-construction section of EPA's Menu of BMPs at: www.epa.gov/noes/menuofbml)s
BMP Description: Deep Sump Hooded Catch Basins. Deep sump hooded catch basins will be
installed prior to pavement installation and will intercept runoff from paved areas of the site.
Installation Schedule: Catch basins will be installed prior to installation of pavement.
Maintenance and Basins will be inspected and maintained in accordance with
Inspection: Section_of the Operation and Maintenance Plan dated January
2008.
Responsible Staff.•
BMP Description: Stonnceptor. The Stormceptor is a Massachusetts step tested water quality
device which will attain 77 percent total suspended solids removal.
Installation Schedule: The Stormceptor will be installed prior to installation of
pavement.
Maintenance and The Stormceptor will be inspected and maintained in accordance
Inspection: with Section B of the Operation and Maintenance Plan dated
January 2008.
Responsible Staff.
EPA SWPPP Template, Version 1.1, September 17, 2007 27
Stortnwater Pollution Prevention Plan(SWPPP)
INSERT PROJEC"f'NAME and DATE
BMPDescription: Infiltration Basin. An underground infiltration basin is proposed as a LID
alternative to dispose of runoff from a portion of the roof of the 22 unit building on Mason
Street.
Installation Schedule: The infiltration basin will be installed prior to pavement
installation south of the 22 unit building.
Maintenance and The infiltration basin will be inspected and maintained in
Inspection: accordance with Section E of the Operation and Maintenance
Plan dated January 2008.
Responsible Staff.•
BMP Description: Porous Pavement. An area of porous pavement is proposed south of the 57
unit building as a LID alternative and local test case.
Installation Schedule: The porous pavement area will be installed following installation
of the base course of paving south of the 57 unit building and
field confirmation of subsurface soil suitability.
Maintenance and The porous pavement shall be inspected and maintained in
Inspection: accordance with Section F of the Operation and Maintenance Plan
dated January 2008.
• Responsible Staff.•
•
EPA SWPPP Template, Version 1.1, September 17, 2007 28
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DA FE
W—wiml M1111111 no=
SECTION 5: INSPECTIONS
5.1 Inspections
Instructions:
— Identify the individual(s) responsible for conducting inspections and describe their qualifications.
Reference or attach the inspection form that will be used.
— Describe the frequency that inspections will occur at your site including any correlations to storm frequency
and intensity.
— Note that inspection details for particular BMPs should be included in Sections 2 and 3.
— You should also document the repairs and maintenance that you undertake as a result of your inspections.
These actions can be documented in the corrective action log described in Part 5.3 below.
— for more on this topic,see SWPPP Guide, Chapters 6 and 8 and EPA's CGP Part 3, Subparts 3.6.A, 3.10
and 3.11.C.
— Also, see suggested inspection form in Appendix B of the SWPPP Guide.
1. Inspection Personnel: Identify the person(s)who will be responsible for conducting inspections and
describe their qualifications:
• 2. Inspection Schedule and Procedures:
Describe the inspection schedules and procedures you have developed for your site(include frequency of
inspections for each BMP or group of BMPs, indicate when you will inspect, e.g., before/during/and after rain
events,spot inspections):
Describe the general procedures for correcting problems when they are identified. Include responsible staff
and time frames for making corrections:
Attach a copy of the inspection report you will use for your site.
See Appendix E.
•
EPA SWPPP Template, Version 1.1, September 17, 2007 29
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
• 5.2 Delegation of Authority
Instructions:
— Identify the individual(s)or specifically describe the position where the construction site operator has
delegated authority for the purposes of signing inspection reports,certificaticns,or other information.
— Attach a copy of the signed delegation of authority form that will be used.
— For more on this topic,see SWPPP Guide, Chapter 7 and Appendix G, Subsection 11 of EPA's CGP.
Duly Authorized Representative(s) or Position(s):
Insert Company or Organization Name:
Insert Name:
Insert Position:
Insert Address:
Insert City, State, Zip Code:
Insert Telephone Number:
Insert Fax/Email
Attach a copy of the signed delegation of authority form in Appendix K.
•
5.3 Corrective Action Log
Instructions:
— Create here,or as an attachment,a corrective action log. This log should describe repair, replacement,
and maintenance of BMPs undertaken as a result of the inspections and maintenance procedures
described above. Actions related to the findings of inspections should reference the specific inspection
report.
— This log should describe actions taken,date completed, and note the person that completed the work.
Corrective Action Log:
See Appendix F.
•
EPA SWPPP Template, Version 1.1, September 17, 2007 30
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAME and DATE
i SECTION 6: RECORDKEEPING AND TRAINING
6.1 Recordkeeping
Instructions:
— The following is a list of records you should keep at your project site available for inspectors to review:
— Dates of grading,construction activity,and stabilization (which is covered in Sections 2 and 3)
— A copy of the construction general permit(attach)
— The signed and certified NOI form or permit application form(attach)
— A copy of the letter from EPA or/the state notifying you of their receipt of your complete NOI/application
(attach)
— Inspection reports(attach)
— Records relating to endangered species and historic preservation (attach)
— Check your permit for additional details
— For more on this subject,see SWPPP Guide, Chapter 6.0 and EPA's CGP Part 3, Subparts 3.4.C, 3.8,
3.10.G and 3.12.A.
Records will be retained for a minimum period of at least 3 years after the permit is terminated.
• Date(s) when major grading activities occur:
INSERT LOG HERE or REFERENCE ATTACHMENT
Date(s) when construction activities temporarily or permanently cease on a portion of the site:
INSERT LOG HERE or REFERENCE ATTACHMENT
Date(s) when an area is either temporarily or permanently stabilized:
INSERT LOG HERE or REFERENCE ATTACHMENT
6.2 Log of Changes to the SWPPP
Instructions:
— Create a log here, or as an attachment, of changes and updates to the SWPPP. You should include
additions of new BMPs, replacement of failed BMPs,significant changes in the activities or their timing on
the project, changes in personnel,changes in inspection and maintenance procedures, updates to site
maps,and so on.
Log of changes and updates to the SWPPP
See Appendix G.
•
EPA SWPPP Template, Version 1.1, September 17, 2007 31
Stormwater Pollution Prevention Plan(SWPPP)
INSERT'PROJECT NAME and DATE
• 6.3 Training
Instructions:
— Training your staff and subcontractors is an effective BMP. As with the other steps you take to prevent
stormwater problems at your site,you should document the training that you conduct for your staff, for
those with specific stormwater responsibilities(e.g. installing,inspecting, and maintaining BMPs), and for
subcontractors.
— Include dates, number of attendees,subjects covered,and length of training.
— For more on this subject,see SWPPP Guide, Chapter 8.
Individual(s) Responsible for Training:
INSERT TEXT or TABLE HERE
Describe Training Conducted:
• General stormwater and BMP awareness training for staff and subcontractors:
• Detailed training for staff and subcontractors with specific stormwater responsibilities:
•
EPA SWPPP Template, Version 1.1, September 17, 2007 32
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJEC NAME and DATE
11 PUMP 11119
SECTION 7: FINAL STABILIZATION
Instructions:
— Describe procedures for final stabilization. If you complete major construction activities on part of your
site,you can document your final stabilization efforts for that portion of the site. Many permits will allow you
to then discontinue inspection activities in these areas(be sure to check your permit for exact
requirements). You can amend or add to this section as areas of your project are finally stabilized.
— Update your site plans to indicate areas that have achieved final stabilization.
— For more on this topic,see SWPPP Guide, Chapter 9 and EPA's CGP Part 3, Subparts 3.11 and 3.13.D,
and Part 5, Subpart 5.1.
BMP Description:
Installation Schedule:
Maintenance and
Inspection:
Responsible Staff.•
BMP Description:
Installation Schedule:
• Maintenance and
Inspection:
Responsible Staff.•
Repeat as needed
EPA SWPPP Template, Version 1.1, September 17, 2007 33
Stormwater Pollution Prevention Plan(SWPPP)
INSERT PROJECT NAklE and DA"rE
W 99
SECTION 8: CERTIFICATION AND NOTIFICATION
Instructions:
— The SWPPP should be signed and certified by the construction operator(s). Attach a copy of the N01 and
permit authorization letter received from EPA or the state in Appendix D.
— For more information, see EPA's CGP Part 3, Subpart 3.12.A-D and Appendix G, Section 11.
I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gathered and evaluated the information submitted. Based on my inquiry of the person
or persons who manage the system, or those persons directly responsible for gathering the
information,the information submitted is,to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Name: Title:
Signature: Date:
iRepeat as needed for multiple construction operators at the site
•
EPA SWPPP Template, Version 1.1, September 17, 2007 34
Stormwater Pollution Prevention Plan (SWPPP)
--1111 IRS 1111 Riverview Place March 2008
SWPPP APPENDICES
Attach the following documentation to the SWPPP:
Appendix A - General Location Map
Appendix B - Site Maps
Appendix C- Construction General Permit
Appendix D - NOI and Acknowledgement Letter from EPA/State
Appendix E- Inspection Reports
Appendix F- Corrective Action Log (or in Part 5.3)
Appendix G - SWPPP Amendment Log (or in Part 6.2)
Appendix H- Subcontractor Certifications/Agreements
Appendix I- Grading and Stabilization Activities Log (or in Part
• 6.1)
Appendix J- Training Log
Appendix K- Delegation of Authority
Appendix L - Additional Information (i.e., Endangered Species
and Historic Preservation Documentation)
EPA SWPPP Template, Version 1.1, September 17, 2007 35
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APPENDIX E
SAMPLE INSPECTION REPORT
Stormwater Construction Site Inspection RE! ort
:,' Gpueral Information ° t
• Project Name Riverview Place
NPDES Tracking No. Location Salem,Mass.
Date of Inspection Start/End Time
Inspector's Name(s)
Inspector's Title(s)
Inspector's Contact Information
Inspector's Qualifications
Insert qualifications or add reference to the SWPPP.(See Section 5 of the SWPPP
Template)
Describe present phase of
construction
Type of Inspection:
❑ Re lar ❑ Pre-storm event ❑Dunn storm event ❑Post-storm event
�t =,11,
M! "�Y. y *Weatl�erTnforata4onSlAir
�r _t �A _
Has there been a storm event since the last inspection? ❑Yes ❑No
If yes,provide:
Storm Start Date&Time: Storm Duration(hrs): Approximate Amount of Precipitation(in):
Weather at time of this inspection?
❑ Clear ❑Cloudy ❑ Rain ❑ Sleet ❑Fog ❑ Snowing ❑High Winds
• ❑ Other: Temperature:
Have any discharges occurred since the last inspection? ❑Yes ❑No
If yes,describe:
Are there any discharges at the time of inspection? ❑Yes ❑No
If yes,describe:
Site-specific BMPs
• Number the structural and non-structural BMPs identified in your SWPPP on your site map and list them
below(add as many BMPs as necessary). Carry a copy of the numbered site map with you during your
inspections. This list will ensure that you are inspecting all required BMPs at your site.
• Describe corrective actions initiated, date completed, and note the person that completed the work in the
Corrective Action Lo .
l n ,$,Mpt INV WIN + O
� iYt&tallca � Ia�intesu�a,nce'. " z * c
ARM-
1
1.I.M1 Protect Nat.Features ❑Yes ❑No ❑Yes ❑No
2 Protect Stoc iles ❑Yes ❑No ❑Yes ❑No
3 Existin Nat. Swale ❑Yes ❑No ❑Yes ❑No
4 Diversion Swale ❑Yes ❑No ❑Yes ❑No
5 Catch Basins ❑Yes ❑No ❑Yes ❑No
6 Stormce for ❑Yes ❑No ❑Yes ❑No
7 Sediment Basin ❑Yes ❑No ❑Yes ❑No
8 Infiltration Basin ❑Yes ❑No ❑Yes ❑No
9 Porous Pavement ❑Yes ❑No ❑Yes ❑No
10 ❑Yes ❑No ❑Yes ❑No
11 ❑Yes ❑No I ❑Yes ❑No
EPA SWPPP Inspection Report, Version 1.1, September 17, 2007 2
B1k4P y rBiVSPsr BMP ' it oTrecCEve Accton Needed and'Nofes s
� ' p rt; Instatled? YVtainYenadtci � , _ :t t�
'ra t e,., ¥ x x ^ 4A]TBd"3av % a ra resit a �,nG3 >£',a6{t..
�� >� "�- its F :
ii
12 ❑Yes ❑No ❑Yes ❑No
13 ❑Yes ❑No ❑Yes ❑No
14 ❑Yes ❑No ❑Yes ❑No
15 —byes ❑No ❑Yes ❑No
16 ❑Yes ❑No ❑Yes ❑No
17 ❑Yes ❑No ❑Yes ❑No
18 ❑Yes ❑No ❑Yes ❑No
19 ❑Yes ❑No ❑Yes ❑No
20 Yes ❑No ❑Yes ❑No
Overall Site Issues
Below are some general site issues that should be assessed during inspections. Customize this list as needed for
conditions at your site.
BItiIPlaetrvrp' a7mp1e5aeuYrd' 131t$ nle c ;' 4Anr,e—Cd'0A:cnon'1Neeriedahn3lbtts , M�ft
�aTBt]?.
1 Are all slopes and ❑Yes ❑No ❑Yes ❑No
disturbed areas not
actively being worked
properly stabilized?
2 Are natural resource ❑Yes ❑No ❑Yes ❑No
areas(e.g.,streams,
wetlands,mature trees,
etc.)protected with
barriers or similar
• BMWs?
3 Are perimeter controls ❑Yes ❑No ❑Yes ❑No
and sediment barriers
adequately installed and
maintained?
4 Are discharge points and ❑Yes ❑No ❑Yes ❑No
receiving waters free of
any sediment deposits?
5 Are storm drain inlets ❑Yes ❑No ❑Yes ❑No
properly protected?
6 Is the construction exit ❑Yes ❑No ❑Yes ❑No
preventing sediment
from being tracked into
the street?
7 Is trash/litter from work ❑Yes ❑No ❑Yes ❑No
areas collected and
placed in covered
dumpsters?
8 Are washout facilities ❑Yes ❑No ❑Yes ❑No
(e.g.,paint,stucco,
concrete)available,
• clearly marked,and
maintained?
EPA SWPPP Inspection Report Version 1.1, September 17, 2007 3
B117PTachv�ty Implemented a lYTamtenance , Coprective Action Needed andNotes x
9 Are vehicle and ❑Yes ❑No ❑Yes ❑No
equipment fueling,
cleaning, and
maintenance areas free
of spills,leaks,or any
other deleterious
material?
10 Are materials that are ❑Yes ❑No ❑Yes ❑No
potential stormwater
contaminants stored
inside or under cover?
I 1 Are non-stormwater 5—Yes ❑No ❑Yes ❑No
discharges(e.g.,wash
water,dewatering)
properly controlled?
12 ❑Yes ❑No ❑Yes ❑No
Non-Com liance
Describe any incidents of non-compliance not described above:
•
CERTIFICATION STATEMENT
"I certify under penalty of law that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated
the information submitted.Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information,the information submitted is,to the best of my knowledge and
belief,true,accurate, and complete.I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations"
Print name and title:
Signature: Date:
EPA SWPPP Inspection Report Version 1.1, September 17, 2007 4
Stormwater Pollution Prevention Plan (SWPPP)
Riverview Place March 2008
Appendix F — Sample Corrective Action Log
Project Name:
SWPPP Contact:
InspectionInspector Description of BMP Deficiency Corrective Action Needed (including Date Action
Date Name(s) planned date/responsible person) Taken/Responsible
person
EPA SWPPP Template, Version 1.1, September 17, 2007
• • i
Stormwater Pollution Prevention Plan(SWPPP)
Riverview Place March 2008
Appendix G — Sample SWPPP Amendment Log
Project Name:
SWPPP Contact:
Amendment No. Description of the Amentlment Date of Amentlment . ' Amendment Preparetl by
[Names and Title
EPA SWPPP Template, Version 1.1, September 17, 2007
Stormwater Pollution Prevention Plan(SWPPP)
Riverview Place March 2008
Appendix H — Sample Subcontractor Certifications/Agreements
SUBCONTRACTOR CERTIFICATION
STORMWATER POLLUTION PREVENTION PLAN
Project Number:
Project Title:
Operator(s):
As a subcontractor, you are required to comply with the Stormwater Pollution Prevention Plan (SWPPP)for
any work that you perform on-site. Any person or group who violates any condition of the SWPPP may be
subject to substantial penalties or loss of contract. You are encouraged to advise each of your employees
working on this project of the requirements of the SWPPP. A copy of the SWPPP is available for your
review at the office trailer.
Each subcontractor engaged in activities at the construction site that could impact stormwater must be
identified and sign the following certification statement:
• I certify under the penalty of law that I have read and understand the terms and conditions of the
SWPPP for the above designated project and agree to follow the BMPs and practices described in
the SWPPP.
This certification is hereby signed in reference to the above named project:
Company:
Address:
Telephone Number:
Type of construction service to be provided:
Signature:
Title:
• Date:
EPA SWPPP Template, Version 1.1, September 17, 2007
Stormwater Pollution Prevention Plan(SWPPP)
Riverview Place March 2008
Appendix I — Sample Grading and Stabilization Activities Log
Project Name:
SWPPP Contact:
Date,: Description of Grading Activity. Date Grading Date When ' ., "Description of Stabilization Measure And,
Grading Activity Ceased Stabilization
Activity.' (Indicate .` Measures are
Initiated . Temporaryor Initiated
Permanent
EPA SWPPP Template, Version 1.1, September 17, 2007
Stormwater Pollution Prevention Plan(SWPPP)
Riverview Place March 2008
Appendix J — Sample SWPPP Training Log
Stormwater Pollution Prevention Training Log
Project Name:
Project Location:
Instructor's Name(s):
Instructor's Title(s):
Course Location: Date:
Course Length (hours):
Stormwater Training Topic: (check as appropriate)
❑ Erosion Control BMPs ❑ Emergency Procedures
• ❑ Sediment Control BMPs ❑ Good Housekeeping BMPs
❑ Non-Stormwater BMPs
Specific Training Objective:
Attendee Roster: (attach additional pages as necessary)
No. Name of Attendee Company
1
2
3
4
5
6
7
8
9
10
•
EPA SWPPP Template, Version 1.1, September 17, 2007
Stormwater Pollution Prevention Plan (SWPPP)
Riverview Place March 2008
Appendix K — Sample Delegation of Authority Form
Delegation of Authority
h (name), hereby designate the person or specifically described
position below to be a duly authorized representative for the purpose of overseeing compliance
with environmental requirements, including the Construction General Permit, at the
construction site. The designee is authorized to
sign any reports, stormwater pollution prevention plans and all other documents required by the
permit.
(name of person or position)
(company)
(address)
(city, state, zip)
(phone) .
By signing this authorization, I confirm that I meet the requirements to make such a designation
as set forth in Appendix G, Subsection I LA of EPA's Construction General Permit(CGP), and
that the designee above meets the definition of a"duly authorized representative" as set forth in
Appendix G, Subsection I LB (1-3).
I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gathered and evaluated the information submitted. Based on my inquiry of the person
or persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations.
Name:
Company:
Title:
Signature:
Date:
•
EPA SWPPP Template, Version 1.1, September 17, 2007
PERMIT REQUIREMENTS
• Permit Requirements
• Variance from Salem Zoning Board of Appeals
• Section 7-21 Special Permit. NRCC Mixed Use District
• Site Plan Review(Section 7-18)
• Wetlands and Flood Hazard District Special Permit
• Order of Conditions (Salem Conservation Commission)
• Chapter 91 License—Massachusetts DEP
•
•
CHECKLIST FOR STORMWATER REPORT
Massachusetts Department of Environmental Protection
Bureau of Resource Protection - Wetlands Program
Checklist for Stormwater Report
•
A. Introduction
Important: A Stormwater Report must be submitted with the Notice of Intent permit application to document
When forms filling ut
on the compliance with the Stormwater Management Standards. The following checklist is NOT a substitute for
computer,use the Stormwater Report (which should provide more substantive and detailed information) but is offered
only the tab key here as a tool to help the applicant organize their Stormwater Management documentation for their
to move your Report and for the reviewer to assess this information in a consistent format. As noted in the Checklist,
cursor-do not the Stormwater Report must contain the engineering computations and supporting Information set forth in
use the return P 9 9 P PP g
key, Volume 3 of the Massachusetts Stormwater Handbook. The Stormwater Report must be prepared and
certified by a Registered Professional Engineer(RPE) licensed in the Commonwealth.
�n
The Stormwater Report must include:
• The Stormwater Checklist completed and stamped by a Registered Professional Engineer(see
page 2)that certifies that the Stormwater Report contains all required submittals.' This Checklist
is to be used as the cover for the completed Stormwater Report.
• ApplicanUProject Name
• Project Address
• Name of Firm and Registered Professional Engineer that prepared the Report
• Long-Term Pollution Prevention Plan required by Standards 4-6
• Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan required
by Standard 82
Operation and Maintenance Plan required by Standard 9
In addition to all plans and supporting information, the Stormwater Report must include a brief narrative
• describing stormwater management practices, including environmentally sensitive site design and LID
techniques, along with a diagram depicting runoff through the proposed BMP treatment train. Plans are
required to show existing and proposed conditions, identify all wetland resource areas, NRCS soil types,
critical areas, Land Uses with Higher Potential Pollutant Loads (LUHPPL), and any areas on the site
where infiltration rate is greater than 2.4 inches per hour. The Plans shall identify the drainage areas for
both existing and proposed conditions at a scale that enables verification of supporting calculations.
As noted in the Checklist, the Stormwater Management Report shall document compliance with each of
the Stormwater Management Standards as provided in the Massachusetts Stormwater Handbook. The
soils evaluation and calculations shall be done using the methodologies set forth in Volume 3 of the
Massachusetts Stormwater Handbook.
To ensure that the Stormwater Report is complete, applicants are required to fill in the Stormwater Report
Checklist by checking the box to indicate that the specified information has been included in the
Stormwater Report. If any of the information specified in the checklist has not been submitted, the
applicant must provide an explanation. The completed Stormwater Report Checklist and Certification
must be submitted with the Stormwater Report.
'The Stormwater Report may also include the Illicit Discharge Compliance Statement required by Standard 10. If not included in
the Stormwater Report,the Illicit Discharge Compliance Statement must be submitted prior to the discharge of stormwater runoff to
the post-construction best management practices.
'For some complex projects, it may not be possible to include the Construction Period Erosion and Sedimentation Control Plan in
the Stormwater Report. In that event,the issuing authority has the discretion to issue an Order of Conditions that approves the
• project and includes a condition requiring the proponent to submit the Construction Period Erosion and Sedimentation Control Plan
before commencing any land disturbance activity on the site.
F13866-Checklist for Stormwater Report 111008•04/01/08 Stormwater Report Checklist•Page 1 of 8
Massachusetts Department of Environmental Protection
Bureau of Resource Protection -Wetlands Program
Checklist for Stormwater Report
i
B. Stormwater Checklist and Certification
The following checklist is intended to serve as a guide for applicants as to the elements that ordinarily
need to be addressed in a complete Stormwater Report. The checklist is also intended to provide
conservation commissions and other reviewing authorities with a summary of the components necessary
for a comprehensive Stormwater Report that addresses the ten Stormwater Standards.
Note: Because stormwater requirements vary from project to project, it is possible that a complete
Stormwater Report may not include information on some of the subjects specified in the Checklist. If it is
determined that a specific item does not apply to the project under review, please note that the item is not
applicable(N.A.) and provide the reasons for that determination.
A complete checklist must include the Certification set forth below signed by the Registered Professional
Engineer who prepared the Stormwater Report.
Registered Professional Engineer's Certification
I have reviewed the Stormwater Report, including the soil evaluation, computations, Long-term Pollution
Prevention Plan, the Construction Period Erosion and Sedimentation Control Plan (if included), the Long-
term Post-Construction Operation and Maintenance Plan, the Illicit Discharge Compliance Statement(if
included) and the plans showing the stormwater management system, and have determined that they
have been prepared in accordance with the requirements of the Stormwater Management Standards as
further elaborated by the Massachusetts Stormwater Handbook. I have also determined that the
information presented in the Stormwater Checklist is accurate and that the information presented in the
Stormwater Report accurately reflects conditions at the site as of the date of this permit application.
• Registered Professional Engineer Block and Signature
to OF� a
v COly y
No.30969
9 O
SSS/ONALE�G� �
ure a Date
Checklist
Project Type: Is the application for new development, redevelopment, or a mix of new and
redevelopment?
❑ New development
® Redevelopment
❑ Mix of New Development and Redevelopment
•
F13866-Checklist for Sto"water Report 111008•04/01/08 Stormwater Report Checklist•Page 2 of 8
Massachusetts Department of Environmental Protection
Bureau of Resource Protection - Wetlands Program
Checklist for Stormwater Report
•
Checklist (continued)
LID Measures: Stormwater Standards require LID measures to be considered. Document what
environmentally sensitive design and LID Techniques were considered during the planning and design of
the project:
❑ No disturbance to any Wetland Resource Areas
❑ Site Design Practices (e.g. clustered development, reduced frontage setbacks)
® Reduced Impervious Area (Redevelopment Only)
❑ Minimizing disturbance to existing trees and shrubs
❑ LID Site Design Credit Requested:
❑ Credit 1
❑ Credit 2
❑ Credit 3
❑ Use of"country drainage'versus curb and gutter conveyance and pipe
• ® Bioretention Cells(includes Rain Gardens)
❑ Constructed Stormwater Wetlands(includes Gravel Wetlands designs)
❑ Treebox Filter
❑ Water Quality Swale
❑ Grass Channel
❑ Green Roof
❑ Other(describe):
Standard 1: No New Untreated Discharges
® No new untreated discharges
® Outlets have been designed so there is no erosion or scour to wetlands and waters of the
Commonwealth
® Supporting calculations specified in Volume 3 of the Massachusetts Stormwater Handbook included.
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Massachusetts Department of Environmental Protection
Bureau of Resource Protection - Wetlands Program
• Checklist for Stormwater Report
Checklist (continued)
Standard 2: Peak Rate Attenuation
® Standard 2 waiver requested because the project is located in land subject to coastal storm flowage
and stormwater discharge is to a wetland subject to coastal flooding.
❑ Evaluation provided to determine whether off-site flooding increases during the 100-year 24-hour
storm.
❑ Calculations provided to show that post-development peak discharge rates do not exceed pre-
development rates for the 2-year and 10-year 24-hour storms. If evaluation shows that off-site
flooding increases during the 100-year 24-hour storm, calculations are also provided to show that
post-development peak discharge rates do not exceed pre-devefopment rates for the 100-year 24-
hour storm.
Standard 3: Recharge
® Soil Analysis provided.
® Required Recharge Volume calculation provided.
❑ Required Recharge volume reduced through use of the LID site Design Credits.
® Sizing the infiltration, BMPs is based on the following method: Check the method used.
® Static ❑ Simple Dynamic ❑ Dynamic Field'
❑ Runoff from all impervious areas at the site discharging to the infiltration BMP.
❑ Runoff from all impervious areas at the site is not discharging to the infiltration BMP and calculations
are provided showing that the drainage area contributing runoff to the infiltration BMPs is sufficient to
generate the required recharge volume.
❑ Recharge BMPs have been sized to infiltrate the Required Recharge Volume.
® Recharge BMPs have been sized to infiltrate the Required Recharge Volume only to the maximum
extent practicable for the following reason:
® Site is comprised solely of C and D soils and/or bedrock at the land surface
❑ M.G.L. c. 21 E sites pursuant to 310 CMR 40.0000
❑ Solid Waste Landfill pursuant to 310 CMR 19.000
® Project is otherwise subject to Stormwater Management Standards only to the maximum extent
practicable.
❑ Calculations showing that the infiltration BMPs will drain in 72 hours are provided.
❑ Property includes a M.G.L. c. 21E site ora solid waste landfill and a mounding analysis is included.
• '80%TSS removal is required prior to discharge to infiltration BMP if Dynamic Field method is used.
F13866-Checklist for Stormwater Report 111008•04/01/08 Stormwater Report Checklist•Page 4 of 8
Massachusetts Department of Environmental Protection
Bureau of Resource Protection - Wetlands Program
Checklist for Stormwater Report
Checklist (continued)
Standard 3: Recharge (continued)
❑ The infiltration BMP is used to attenuate peak flows during storms greater than or equal to the 10-
year 24-hour storm and separation to seasonal high groundwater is less than 4 feet and a mounding
analysis is provided.
❑ Documentation is provided showing that infiltration BMPs do not adversely impact nearby wetland
resource areas.
Standard 4: Water Quality
The Long-Term Pollution Prevention Plan typically includes the following:
• Good housekeeping practices;
• Provisions for storing materials and waste products inside or under cover;
• Vehicle washing controls;
• Requirements for routine inspections and maintenance of stormwater BMPs;
• Spill prevention and response plans;
• Provisions for maintenance of lawns, gardens, and other landscaped areas;
• Requirements for storage and use of fertilizers, herbicides, and pesticides;
• Pet waste management provisions;
• Provisions for operation and management of septic systems;
• Provisions for solid waste management;
• Snow disposal and plowing plans relative to Wetland Resource Areas;
• Winter Road Salt and/or Sand Use and Storage restrictions;
• Street sweeping schedules;
• Provisions for prevention of illicit discharges to the stormwater management system;
• Documentation that Stormwater BMPs are designed to provide for shutdown and containment in the
event of a spill or discharges to or near critical areas or from LUHPPL;
• Training for staff or personnel involved with implementing Long-Term Pollution Prevention Plan;
• List of Emergency contacts for implementing Long-Term Pollution Prevention Plan.
® A Long-Term Pollution Prevention Plan is attached to Stormwater Report and is included as an
attachment to the Wetlands Notice of Intent.
❑ Treatment BMPs subject to the 44% TSS removal pretreatment requirement and the one inch rule for
calculating the water quality volume are included, and discharge:
❑ is within the Zone II or Interim Wellhead Protection Area
❑ is near or to other critical areas
❑ is within soils with a rapid infiltration rate (greater than 2.4 inches per hour)
❑ involves runoff from land uses with higher potential pollutant loads.
❑ The Required Water Quality Volume is reduced through use of the LID site Design Credits.
® Calculations documenting that the treatment train meets the 80% TSS removal requirement and, if
applicable, the 44% TSS removal pretreatment requirement, are provided.
•
F13866-Checklist for Stor water Report 111008•04/01/08 Stormwater Report Checklist•Page 5 of 8
Massachusetts Department of Environmental Protection
Bureau of Resource Protection -Wetlands Program
Checklist for Stormwater Report
•
Checklist (continued)
Standard 4: Water Quality (continued)
® The BMP is sized (and calculations provided) based on:
❑ The %"or 1"Water Quality Volume or
® The equivalent flow rate associated with the Water Quality Volume and documentation is
provided showing that the BMP treats the required water quality volume.
® The applicant proposes to use proprietary BMPs, and documentation supporting use of proprietary
BMP and proposed TSS removal rate is provided. This documentation may be in the form of the
propriety BMP checklist found in Volume 2, Chapter 4 of the Massachusetts Stormwater Handbook
and submitting copies of the TARP Report, STEP Report, and/or other third party studies verifying
performance of the proprietary BMPs.
❑ A TMDL exists that indicates a need to reduce pollutants other than TSS and documentation showing
that the BMPs selected are consistent with the TMDL is provided.
Standard 5: Land Uses With Higher Potential Pollutant Loads (LUHPPLs)
❑ The NPDES Multi-Sector General Permit covers the land use and the Stormwater Pollution
Prevention Plan (SWPPP) has been included with the Stormwater Report.
❑ The NPDES Multi-Sector General Permit covers the land use and the SWPPP will be submitted prior
to the discharge of stormwater to the post-construction stormwater BMPs.
• ❑ The NPDES Multi-Sector General Permit does not cover the land use.
❑ LUHPPLs are located at the site and industry specific source control and pollution prevention
measures have been proposed to reduce or eliminate the exposure of LUHPPLs to rain, snow, snow
melt and runoff, and been included in,the long term Pollution Prevention Plan.
❑ All exposure has been eliminated.
❑ All exposure has not been eliminated and all BMPs selected are on MassDEP LUHPPL list.
❑ The LUHPPL has the potential to generate runoff with moderate to higher concentrations of oil and
grease(e.g. all parking lots with >1000 vehicle trips per day) and the treatment train includes an oil
grit separator, a filtering bioretention area, a sand filter or equivalent.
Standard 6: Critical Areas
❑ The discharge is near or to a critical area and the treatment train includes only BMPs that MassDEP
has approved for stormwater discharges to or near that particular class of critical area.
❑ Critical areas and BMPs are identified in the Stormwater Report.
•
F13866-Checklist for Stormwater Report 111008•04/01/08 Sto"water Report Checklist•Page 6 of 8
Massachusetts Department of Environmental Protection
Bureau of Resource Protection - Wetlands Program
Checklist for Stormwater Report
•
Checklist (continued)
Standard 7: Redevelopments and Other Projects Subject to the Standards only to the maximum
extent practicable
® The project is subject to the Stormwater Management Standards only to the maximum.Extent
Practicable as a:
❑ Limited Project
❑ Small Residential Projects: 5-9 single family houses or 5-9 units in a multi-family development
provided there is no discharge that may potentially affect a critical area.
❑ Small Residential Projects: 2-4 single family houses or 2-4 units in a multi-family development
with a discharge to a critical area
❑ Marina and/or boatyard provided the hull painting, service and maintenance areas are protected
from exposure to rain, snow, snow melt and runoff
❑ Bike Path and/or Foot Path
® Redevelopment Project
❑ Redevelopment portion of mix of new and redevelopment.
® Certain standards are not fully met(Standard No. 1, 8, 9, and 10 must always be fully met) and an
explanation of why these standards are not met is contained in the Stormwater Report.
® The project involves redevelopment and a description of all measures that have been taken to
• improve existing conditions is provided in the Stormwater Report. The redevelopment checklist found
in Volume 2 Chapter 3 of the Massachusetts Stormwater Handbook may be used to document that
the proposed stormwater management system (a)complies with Standards 2, 3 and the pretreatment
and structural BMP requirements of Standards 4-6 to the maximum extent practicable and (b)
improves existing conditions.
Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control
A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan must include the
following information:
• Narrative;
• Construction Period Operation and Maintenance Plan;
Names of Persons or Entity Responsible for Plan Compliance;
• Construction Period Pollution Prevention Measures;
• Erosion and Sedimentation Control Plan Drawings;
• Detail drawings and specifications for erosion control BMPs, including sizing calculations,
• Vegetation Planning;
• Site Development Plan;
• Construction Sequencing Plan;
• Sequencing of Erosion and Sedimentation Controls;
• Operation and Maintenance of Erosion and Sedimentation Controls;
• Inspection Schedule;
• Maintenance Schedule;
• Inspection and Maintenance Log Form.
® A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan containing
• the information set forth above has been included in the Stormwater Report.
F13866-Checklist for Sto"water Report 111008•04/01/08 Sto"water Report Checklist•Page 7 of 8
Massachusetts Department of Environmental Protection
Bureau of Resource Protection - Wetlands Program
Checklist for Stormwater Report
•
Checklist (continued)
Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control
(continued)
❑ The project is highly complex and information is included in the Stormwater Report that explains why
it is not possible to submit the Construction Period Pollution Prevention and Erosion and
Sedimentation Control Plan with the application. A Construction period Pollution Prevention and
Erosion and Sedimentation Control has not been included in the Stormwater Report but will be
submitted before land disturbance begins.
❑ The project is not covered by a NPDES Construction General Permit.
® The project is covered by a NPDES Construction General Permit and a copy of the SWPPP is in the
Stormwater Report.
❑ The project is covered by a NPDES Construction General Permit but no SWPPP been submitted.
The SWPPP will be submitted BEFORE land disturbance begins.
Standard 9: Operation and Maintenance Plan
® The Post Construction Operation and Maintenance Plan is included in the Stormwater Report and
includes the following information:
® Name of the stormwater management system owners;
® Party responsible for operation and maintenance;
• ® Schedule for implementation of routine and non-routine maintenance tasks;
® Plan showing the location of all stormwater BMPs maintenance access areas;
® Description and delineation of public safety features;
❑ Estimated operation and maintenance budget, and
® Operation and Maintenance Log Form.
❑ The responsible party is not the owner of the parcel where the BMP is located and the Stormwater
Report includes the following submissions:
❑ A copy of the legal instrument(deed, homeowner's association, utility trust or other legal entity)
that establishes the terms of and legal responsibility for the operation and maintenance of the
project site stormwater BMPs;
❑ A plan and easement deed that allows site access for the legal entity to operate and maintain
BMP functions.
Standard 10: Prohibition of Illicit Discharges
® The Long-Term Pollution Prevention Plan includes measures to prevent illicit discharges;
❑ An Illicit Discharge Compliance Statement is attached;
® NO Illicit Discharge Compliance Statement is attached but will be submitted prior to the discharge of
any stormwater to post-construction BMPs.
F13866-Checklist for Stormwater Report 711008•04/01/08 Stormwater Report Checklist•Page 8 of 8
• OPERATION AND MAINTENANCE PLAN
PROPOSED STORMWATER MANAGEMENT FACILITIES
RIVERVIEW PLACE
SALEM, MASSACHUSETTS
JANUARY 2008
REVISED: NOVEMBER 2008
The following Operations and Maintenance Plan ("O&M") has been prepared to ensure
that proposed systems function as designed. The O & M plan includes a maintenance
schedule to ensure that structural and non-structural components are implemented
properly and identifies the responsible parties.
A brief summary of the specific BMP's to be implemented at the site are as follows:
Non-Structural Methods
Site Layout
• Any maintained vegetated buffers disturbed during other site construction activities will
be stabilized upon completion of project activities.
Source Control
A comprehensive source control program will be implemented at the site which includes
regular pavement sweeping (at least four times per year), catch basin cleaning, and
Stormceptor cleaning.
Spill Prevention
A spill prevention plan that includes an emergency notification plan and cleanup program
will be developed as part of the National Pollution Discharge Elimination System
(NPDES) Construction General Permit. At a minimum the following good housekeeping
practices will be followed on-site during construction:
1. An effort will be made to store only enough product required to do the job.
2. All materials stored on-site will be kept in a neat, orderly manner in their
appropriate containers and, if possible, under a roof or other enclosure.
•
O &M1
Structural Methods
A. Deep Sump Catch Basins
1. During Construction
a. Protect catch basins grates with hay bales, check dams until base
paving course is installed and landscaped areas are stabilized
and/or vegetated.
b. Inspect basins monthly or following rainstorms of greater than one
inch in 24 hours and clean when sediment levels are greater than
twelve inches.
2. Long Term
a. Inspect basins monthly and clean as necessary, but at least twice
annually.
B. Stormceptor Unit
1. Maintain in accordance with Manufacturer's recommendations (copy
follows). The Stormceptor Unit shall be inspected at least four times
annually and after any spill event. The unit shall be maintained annually
and immediately following any spill event.
C. Snow Removal
Snow removal and/or storage shall be conducted in accordance with the
Massachusetts DEP, Resource Protection Snow Disposal Guidance, effective
March 1, 2001. Snow shall not be stockpiled on the walkway adjacent to the
North River nor on top of catch basins and shall not be dumped or pushed into the
river.
Snow stockpile areas shall be designated prior to snowfall (but not later than
December 1")with orange plastic temporary fencing. Snow stockpile areas shall
be cleaned of any debris not later than May 15". If snow exceeds the on-site
storage capacity, it shall be removed to an approved off-site stockpile location.
D. Erosion Control Procedures
1. Staked hay bales, silt fence, temporary diversion swales and sediment
basins shall be installed in accordance with this plan or as otherwise
directed by the project engineer or the Conservation Commission prior to
O &M2
• commencement of construction activities. 20 additional hay bales and 100
ft. of silt fence shall be kept on site for repairs or other erosion control
needs. The contractor shall inspect erosion control facilities weekly and
after every rainfall event to confirm that same are properly functioning.
Any deficiencies in the erosion control facilities shall be corrected
immediately.
2. All soil stockpiles shall be protected against erosion utilizing erosion
control barriers and/or crushed stone filter dikes.
3. Catch basins shall be protected with filters, as shown on the plan,until no
sediment transport is visible during rainfall events. Filters shall be
inspected weekly and maintained as necessary.
4. Temporary erosion control measures to be taken during construction shall
conform with the "Massachusetts Erosion and Sediment Control
Guidelines, Urban and Suburban Areas" dated March 1997, and may
include some or all of the following measures:
• Temporary seeding
• Temporary mulching (straw)
• Permanent seeding
• • Hydroseeding
• Sodding
• Placement of hay or jute netting during winter months
5. Debris and/or litter shall be removed from the site on a weekly basis.
6. If dust is generated during construction, it shall be controlled by use of
water trucks, sprinkling or temporary stabilization methods.
7. At the completion of the project, all disturbed areas shall be permanently
stabilized with loam and seed or other ground cover. All stormwater
BMP's shall be inspected and cleaned as necessary. Paved areas shall be
swept.
E. Bioretention Cells
1. Bioretention cells shall be constructed following all other construction
activities occurring near or on proposed cell locations.
2. Inspection
• a. Cells shall be inspected monthly throughout the growing season
and bi-weekly in the summer; inspection shall include examination
of plants and ground cover for pest or disease problems as well as
sediment accumulation, erosion, mulch and overflow piping.
O & M3
• 3. Maintenance
a. Clean sediment accumulation if more than one inch in depth;
b. Repair any eroded areas;
C. Treat diseased vegetation as necessary;
d. Remove and replace dead vegetation (April 151—May 151h and/or
September 15`h—October 301 );
e. Remove any invasive species;
f Replace mulch every two years.
F. Porous Pavement
Porous pavement surfaces are to be cleaned at least six times a year by vacuum
sweeping and pressure washed at least twice annually. No sanding shall be
allowed on porous pavement surfaces. A sign shall be posted identifying areas of
porous pavements. No salting of porous pavement surfaces shall be permitted.
• Porous pavements shall be inspected following rainfall events to confirm that
proper drainage is occurring and that no deterioration of the surface is occurring.
Porous surfaces shall not be sealed or repaved with impermeable materials.
G. Long Term Pollution Prevention Plan
1. Good Housekeeping
a. Inspect the site weekly,pickup and properly dispose of any trash,
debris or branches;
b. Compost all landscape waste in an appropriate container or remove
from the site to an approved waste area;
C. Inspect paved areas for any signs of oil drippings and apply an
absorbent agent to such immediately;
d. Vacuum and sweep paved areas of site at least four times annually.
2. Storage of Waste Materials
Store any waste or recyclables in covered containers or a covered
dumpster and remove such materials from the site on a regular basis, but
in no case less often than weekly.
O &M4
• 3. Vehicle Washing
No vehicle washing is to be done on site other than hand washing of
vehicles owned by occupants of the residences.
4. Inspect and maintain stormwater best management practices in accordance
with Sections A, B, E and F of this Operation and Maintenance Plan.
5. Spill Prevention and Response:
A spill prevention and response plan is included in the NPDES SWPPP.
6. Maintenance of landscaped areas shall be done utilizing off-site personnel:
Use of herbicides and pesticides shall be minimized. Low nitrogen
fertilizers will be used. Landscape maintenance supplies are not to be
stored on site, except during actual landscape construction. Rain gardens
shall be maintained in accordance with Section E of the Operation and
Maintenance Plan.
7. Any observed pet waste will be cleaned up immediately and disposed of
with regular site trash.
8. Snow management shall be in accordance with Section C of the Operation
• and Maintenance Plan.
H. Notification of Future Property Owners as to Requirements for Maintenance of
Stormwater System.
A deed restriction will be placed on any conveyance of all units within the subject
property referencing the requirements of this plan.
I. Plan
The proposed storm drainage BMP's are shown on Sheets 4-6 of the Site
Development Permit Plan. An as-built plan will accompany the request for a
Certificate of Compliance from the Salem Conservation Commission.
J. Operation and Maintenance Budget
An operation and maintenance budget will be provided at the time of a request for
a Certificate of Compliance.
I�
O &M5
• K. Illicit Discharges
No illicit discharges from the site shall be allowed to enter the storm drainage
system or the North River.
The party responsible for Operation and Maintenance of the Stormwater Management
Facilities is:
Riverview Place LLC
c/o Michael O'Brien
6 Cider Mill Road
Peabody, MA. 01960
Tel: 978-979-4072
Or its heirs and assigns.
•
O &M6
Redevelopment Checklist
• Riverview Place
Mason Street and Flint Street— Salem, Mass.
March 2008
Existing Conditions
The site of Riverview Place consists of 4.3 acres of industrially developed land. It is
bounded on the west, in part,by Flint Street and, in part, by private residences along Flint
Street, to the north by private residences and Mason St., to the east by an industrial site
owned by Mason Realty Trust and to the south by the North River and land of the
Commonwealth of Massachusetts. The major portion of the site is occupied by the so-
called Salem Suede building and the Bonfanti building on Mason Street.
Those portions of the site not occupied by buildings are either paved or heavily
compacted gravel industrial yard areas. Soil are, at best,Hydrologic Group C or D and
underlain by fill materials. Some storage areas on site are land uses with higher pollutant
loads (auto repair and storage areas). Minimal, if any, stormwater facilities exist on site.
The site is directly tributary to the adjacent North River.
The Proiect
The project proposes to demolish all existing facilities on site and redevelop the property
for residential use and a small commercial component.
Stormwater Management Standards
Standard 1: A new storm drainage outfall serving a newly constructed on-site
collection system is proposed. BMP's include parking lot sweeping, deep
sump hooded catch basins and Stormceptors. The bank of the North River
is currently stabilized by placed riprap or a timber bulkhead.
Standard 2: Peak Rate Control and Flood Prevention
The Applicant requests that the Conservation Commission waive Standard
2 since:
a. The site contains land subject to coastal storm flowage.
b. Postdevelopment discharge rate characteristics will diminish
slightly due to improved surface characteristics.
Standard 3: Recharge to Groundwater
I•
Postdevelopment recharge conditions will improve slightly over
• predevelopment conditions for the following reasons:
a. Impervious or near impervious site coverages within the sub-basin
will decrease from 4.85 to 4.15 acres.
b. Open space (landscaped) areas will increase on site to 1.15 acres.
C. Assuming that appropriate subsurface soil conditions can be found
to the southwest of the 22 unit building,roof recharge by use of
Stormtech infiltrators will be practiced for an appropriate portion
of the 22 unit building facing Mason Street.
d. An area of porous pavement is proposed along the south boundary
of the parking lot.
It is proposed to fully evaluate subsurface soil conditions with respect to
type of materials and 21 E matters during the demolition phase and report
the findings of those investigations together with any required site design
modifications relative to Standard 3 to the Salem Conservation
Commission.
Standard 4: 80% TSS Removal
• The development proposal includes the following items in the source
control section of the Operation and Maintenance Plan:
• Sweeping of paved surfaces
• Snow management
• Management of lawn chemicals
• Stabilization of observed eroding surfaces
All impervious areas on site will be new construction and routed through
deep sump catch basins and Stormceptors to achieve 80%TSS removal
for the first one-half inch of runoff.
Standard 5: Higher Potential Pollutant Loads
The site is residential in character and thus not a land use with Higher
Potential Pollutant Loads.
Standard 6: Critical Areas
The proposed stormwater discharge is not into or near a critical area nor
into an outstanding resource water nor public water supply areas.
•
Standard 8: Erosion and Sediment Controls
• An erosion control plan is specified on Sheet 8 of the Site Development
Permit Plan. A NPDES Notice of Intent and SWPPP shall be prepared
and submitted prior to commencement of construction in accordance with
Federal requirements. A draft of the SWPPP is included with the Notice
of Intent.
Standard 9: Operation and Maintenance
An Operation and Maintenance Plan is included with the Stormwater
Report.
Standard 10: Illicit Discharges
The property owner is of the opinion that any illicit discharges were
removed several years ago. No pipes were observed to be entering the
river from the site other than an apparent storm drain crossing the adjacent
property of Mason Realty Trust.
The absence of illicit discharges will be confirmed during the demolition
phase. If any are encountered, such will be permanently discontinued by
capping or removal.
•
•
Demolition Plan
• Riverview Place— Salem, Mass.
March 2008
Site preparation of the property upon which Riverview Place is proposed would include
demolition of all structures on the site. The general location of those structures is shown
on Sheet 2 of the Site Development Permit Plans.
Prior to undertaking any demolition activities, the following steps must be completed:
1. Approval of Salem Historical Society since most of the structures on site are more
than 50 years old.
2. Performance of a preliminary demolition inspection by the Salem Fire
Department(SFPR 429C).
3. Utility survey as to water and sewer lines serving the site in accordance with the
requirements of the City of Salem Department of Public Services.
4. Disconnection of all services discovered in Item 3 in accordance with the
requirements of the Salem Department of Public Services.
• 5. Notify all other utility agencies with facilities servicing the lot to secure required
releases under Section 116.1 of the Massachusetts State Building Code.
6. Secure Building Demolition Permit.
Discussions have been conducted with a representative of a potential demolition
contractor for the project as to specific procedures which would be followed in the
demolition of the Salem Suede building with particular emphasis on avoiding
introduction of demolition materials into the North River.
The following general approach is recommended:
• Demolition of the existing building will proceed from northwest to southeast.
This will allow the building to be constantly pulled into the site and not toward
the river.
• As work approaches the river(the last 100 feet of building), a boom system will
be installed to contain any material which might inadvertently get into the river.
The upper two floors of the building are of wood construction and the lower two
floors of masonry construction.
• In addition to the boom system,personnel will be stationed next to the river so
• that any material entering the waterway can be removed immediately.
• The bulk demolition will be done with track excavators.
• Staging areas will be maintained more than 100 feet from the river for temporary
stockpiling of demolition materials or recyclable demolition materials until such
can be removed from the site. Such stockpiles will be protected by erosion
control barriers until removed from the site.
• A silt barrier, as shown on Sheet 2, will be installed prior to start of demolition
activities and inspected daily as to its stability and condition. Any required
repairs will be made immediately.
• Dust control will be accomplished by wetting. The demolition contractor shall
coordinate with the City as to the water source (i.e. metered hydrant use vs.
trucked supply).
•
rmceptor®
Inspecti®n and aintenance® Easy. Convenient.
When it rains, oils, sediment and other contaminants are captured
and contained by over 20,000 Stormceptor units operating
k
worldwide. While Stormceptor's patented scour prevention
technology ensures captured pollutants remain in the unit during
all rainfall events, the accumulated pollutants must eventually be
removed as part of a regular maintenance program.
If neglected, oil and sediment gradually build up and diminish any
BMPs efficiency, harming the environment and leaving owners and
operators vulnerable to fines, surcharges and bad publicity.
Maintenance is a must
Ease, frequency and cost of maintenance are often overlooked by
specifiers when considering the merits of a stormwater treatment 1111--�, 1-y
system. In reality, maintenance is fundamental to the long-term
performance of any stormwater quality treatment device.
While regular maintenance is crucial, it shouldn't
be complicated. An ongoing maintenance
program with Stormceptor is convenient and
practically effortless. With virtually no disruptions, you can concentrate on
your core business.
Quick inspections
Inspections are easily carried out above ground from any standard surface
access cover through a visual inspection of the orifice and drop tee
components. A sludge judge and oil dip-stick are all that are needed for
sediment and oil depth measurements.
Easy unit access
Maintenance is typically conducted from the same surface access Cover,
eliminating the need for confined space entry into the unit. Your site
remains undisturbed, saving you time and money.
imbrium
No muss, no fuss and fast
Maintenance is performed quickly and inexpensively with a
standard vacuum truck. Servicing usually takes less than
two hours, with no disruption to your site.
A complete stormwater management plan for Stormceptor
extends beyond installation and performance to regular
maintenance. It's the smart, cost-effective way to ensure
your unit continues to remove more pollutants than any
other separator for decades to come.
Stormceptor maintenance recommendations
• Units should be inspected post-construction, prior to being put into service.
• Inspect every six months for the first year of operation to determine the oil and sediment
accumulation rate.
• In subsequent years, inspections can be based on first-year observations or local
requirements.
• Cleaning is required once the sediment depth reaches 15% of storage capacity, (generally
taking one year or longer). Local regulations for maintenance frequency may vary.
• Inspect the unit immediately after an oil, fuel or chemical spill.
• A licensed waste management company should remove captured petroleum waste products
from any oil, chemical or fuel spills and dispose responsibly.
With over 20,000 units operating worldwide, Stormceptor performs and protects every day,
In every storm.
df�
I.
imbrsum
tz
Table 2. Stormce for Ca acities
Model Model Sediment Oil Total Holding
(Metric) (US) Capacity Capacity Capacity
L S gal L (US gal) L S gal)
300 450 1275 335 325 85 1775 470
750 900 2460 565 915 280 4325 950
1000 1200 3260 845 915 280_ 5125 120
1500 1800 5660 1445 915 280 7525 1830
2000 2400 6150 1345 2945 880 10925 2495
3000 3600 10415 2600 2945 880 15195 3750
4000 4800 14060 3475 3490 1025 20180 5020
5000 6000 18510 4550 3490 (1025) 24635_(6095)
6000 9200 23445 5425 1 4150 1100 31210 7415
Identification
Even if you do not have plans of your storm drain system you will be side to easily identify where the
inline Stormceptor unit(s) (spool or disc insert) are since the name STORMCEPTOR is clearly embossed
on the cover. You will be able Yo determine the location of"inlet" Storiumptor units with horizontal catch
basin inlets by looking down the grate since the insert will be visible. The name Storinceptor is not
embossed on the inlet models due to the variability of inlet grates used/approved across North America.
Once you have found the unit, you may still be uncertain which model number it is. Comparing the
m. easurrd depth from the water level (bottom of insert)to the bottom of the tank with Table 1 should help
determine the size of the unit.
Starting in 1996, a metal serial number tag has been affixed to the inside of the unit. The serial number has
the model number written on it If the unit does not have a serial number, or if there is any uncertainty
regarding the "size of the mWrcept0r using depth measurements, please contact Stormceptor at 1 800 565-
4801 and we will help you determine the size of a particular unit
What is the Maintenance Procedure?
Maintenance of Stormceptor is performed using vacuum trucks. No entry into the unit is required for
maintenance of the spool insert, inlet insert or the smaller disc inserts. Entry to the level of the disc insert
may be required fbr servicing the larger disc insert models. DO NOT ENTER THE
STORMCEPTOR CHAMBER unless you have the proper equipment, have been trained and are
qualified to enter a confined sparc, as identified by local Occupational Safety and Health Regulations(e.g.
Canada Occupational Safety and Health Regulations — SOR/86-304). Without the proper equipment and
turning, entry into confined spaces can result in serious bodily harm and potentially death. Consult local,
provincial, and/or state regulations to determine the requirements for confined space entry. Be aware that
the insert may be slippery. In addition,be aware that some units do not have a safety grate to cover the
outlet riser pipe that leads to the submerged,lower treatment chamber.
Stormceptor
The Vacuum Service Industry is a well-established sector of the service industry that cleans underground
tanks, sewers and catch basins. Costs to clean a Stormceptor will vary based on the size of unit and
transportation distance's.
The depth of ail in the interceptor can be determined by inserting a dipstick tube in the 150 mm (6") oil
inspection/cleanout pipe ("disc" design), or in the 914 mm(36")central access way("spool" design), or in
the 100 mm(4")cleanout pipe
("inlet"design).
Similarly, the depth of sediment can be measured from the surface without entry into the Stormceptor via
a dipstick tube equipped with a ball valve (Sludge Judge). This tube would be inserted in the central
- -
opemug( spool design)or in the 61D mm(24") openm•-
g("disc" design), or in the 100 mur (4")cleanout
pipe ("inlet" design). Maintenance should be performed once the sediment depth exceeds the guideline
values provided in Table 3.
For the "spool" design Stormceptor maintenance is performed through the large central 914 mm (36")
diameter opening for both the oil and the sediment In the "disc" design, oil is removed through the 150
mm (6") oil inspection/cleanout pipe and sediment is removed through the 610 mm (24") diameter outlet
riser pipe. Alternatively, oil could be removed from the 610 mm (24") opening if water is removed from
the lower chamber to lower the oil level to the level of the drop pipes. For the "inlet"design,maintenance
is performed through the 305mm (12'� inlet drop pipe for the sediment, and oil can be removed from the
100 mm(4")oil inspection cleanout pipe.
We recommend the following procedure to clean out the Stormceptor:
1. Check for oil(using a dipstick tube)
2. Remove any oil separately using a small portable pump
3. Decant the water tom the utut to the sanitary sewer using a portable pump (prior approval is
required from the sewer authority/municipality)
4. Remove the sludge from the bottom of the unit using a vacuum truck
5. Re-fill the Stormceptor with water where required by the local jurisdiction
How Often Is Maintenance Required?
Generally, annual maintenance is recommended but the required maintenance frequency will vary with the
amount of pollution on your site (number of hydrocarbon spills, amount of sediment, etc.). It is
recommended that the frequency of maintenance be increased or reduced based on focal conditions. If the
sediment load is high,maintenance may be required semi-annually. Conversely once the site has stabilized,
maintenance may be required less frequently. Maintenance should be performed immediately after an oil
spill or once the sediment depth in Stormceptor reaches the value specified in Table 3 based on the unit
Sim
In the "disc" design and "inlet" design, any potential obstructions at the inlet can be observed from the
surface. The "disc" insert has been designed as a platform to facilitate maintenance of the Stormceptor
and the storm drain system.
Stormeeptor
- w
Table 3. Sediment Depths Indicating Required Maintenance
Model Model Sediment Depth
Metric US mm in.
300 450 200 8
750 900 200 8
1000 1200 250 10
1500 1800 375 (15)
2000 2400 300 12
3000 3600 425 17
4000 4800 375 15
5000 6000 450 18
6000. 7200 375 15
What Should I do in the Event of an Oil Spill?
Stormceptor is often implemented in areas when the potential for spills is great. Stormceptor should be
cleaned immediately after a spill occurs by a licensed liquid waste hauler. You should also notify the
appropriate regulatory agencies as required m the event of a spill.
Disposal of the Wrapped Material Removed from Stormceptor
The requirements for the disposal of material from Stormceptor are similar to that of any other Best
Management Practices (BMP). Local guidelines should be consulted prior to disposal of the separator
contents.
In most areas the sediment, once dewatered,can be disposed of in a sanitary landfill. It is not anticipated
that the sediment would be classified as hazardous waste. In some areas, mixing the water with the
sediment will create a slurry that can be discharged into a trunk sanitary sewer, In all disposal options,
approval from the dsposal facility operator/agency is required. Petroleum waste products collected in
Stormceptor(oil/chemical/fuel spills)should be removed by a licensed waste management company.
What if I see an oil rainbow or sheen at the Stormceptor outlet?
With a steady influx of water with high concentrations of oil,a sheen may be noticeable at the
Stormceptor outlet This may occur because a rainbow or sheen can be seen at very small oil
concentrations(< 10 ppm). Stormeeptor will remove over 95%of all free oil and the appearance of a
sheen at the outlet with high influent oil concentrations does not mean that the unit is not working to this
Level of removal. In addition,if the influent oil is emulsified,the Stormceptor will not be able to remove it.
The StofiMeptor is designed fol flee oil removal "and not emulsified or dissolved oil conditions.
Stormceptor
^'Drainage/Stormwater/Irrigation ""
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
SECTION 02810
IRRIGATION
PART 1 GENERAL
1.01 PURPOSE
1. The objective of these specifications is to provide an assembled and installed automatic irrigation
system which will efficiently in•igate all lawn and shrub areas,and shall prove satisfactory in all
aspects to the Owner. All lawn areas are to receive spray irrigation, and all shrub beds are to
receive drip irrigation, as outlined herein. Contractor shall follow the specifications with due
perseverance.
1.02 SCOPE
1. The Contractor shall be required to furnish and install all materials necessary to complete the
systems in accordance with the best standard practices.
2. Furnish all labor,materials,services,equipment and appliances required to complete the work of
an automatic irrigation system and related items.
1. Automatic Irrigation System, completely installed
1.03 SUBMITTALS
1. Submit prior to the start of construction an irrigation design for the proposed areas to be irrigated
for approval. Design drawing shall include all sprinklers,valves,sleeves,isolation,hydrants and
pipe sizes. Water pressure and supply location and size shall also be indentified and outlined.
Plan shall include a legend and friction loss calculations for the largest and furthest zones.
2. The Contractor shall provide four (4) copies of product specification sheets on all proposed
equipment to be installed to the Owner's Representative for approval. Work on the irrigation
system may not commence until product sheets are submitted and approved. Submittals shall be
marked up to show proper nozzles, sizes, flows, etc. Equipment to be included:
1. Sprinklers
2. Valves: Manual and Automatic
3. Valve Boxes
4. Pipe and Fittings
5. Wire and
6. Quick Coupling Valves
7. Sleeving Material
8. Controller(s)
9. Rain Shut-off(s)
10. Air/Vacuum Relief Valves
11. Filters
12. Flushing Valves
13. Controller Enclosure
14. Pressure Regulators
IRRIGATION
02810-1
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
15. Booster Pump, if applicable
16. Miscellaneous Materials
3. The Contractor shall maintain complete Record Drawings of the system as the project proceeds.
I. Drawing shall call out materials,have a legend,numbered valves, and show details of
valve assemblies, swing joints, risers, valve boxes, and typical trench section.
2. All valve boxes shall be referenced by distance from a minimum of two permanent
points in a triangular manner.
PART2 -PRODUCTS
2.01 PRODUCTS GENERAL
1. All materials to be incorporated in this system shall be new and without flaws or defects and of
quality and performance as specified and meeting the requirements of the system. All material
overages at the completion of the installation are the property of the Contractor and shall be
removed from the site.
2.02 POINT OF CONNECTION
1. The Point of Connection for either system shall be at the 2-1/2 inch capped copper pipe as
indicated on the drawings, after the backflow preventor and water meter installed by the
contractor.
2.03 ELECTRICAL POINT OF CONNECTION
1. The contractor shall determine the Point of Connection for the irrigation system electrical
requirements,and provide specific recommendations to the owner.The Contractor is responsible
for providing all required electrical connections for the proper operation of the irrigation system.
2.04 PVC PIPING
1. All Main line piping regardless of size shall be PVC, Class 160 as specified.
2. PVC Piping: 1-1/2 inch and 2 inch PVC piping shall be Class 200,SDR 21,ASTM 1120 solvent
weld piping as manufactured by Cresline or approved equal.
3. PVC Piping: above 2 inch PVC piping shall be Class 160,SDR 26,ASTM 1120 bell and gasket
piping as manufactured by Cresline or approved equal
4. PVC pipe sizing:
1. Pipe with flows from 23 to 35.9 gpm shall be 1-1/2 inch Class-200 PVC.
2. Pipe with flows from 36 to 55.9 gpm shall be 2 inch Class-200 PVC.
3. Pipe with flows from 56 to 85.9 gpm shall be 2-1/2 inch Class-160 PVC.
4. Pipe with flows from 86 to 119.9 gpm shall be 3 inch Class-160 PVC.
5. Pipe with flows from 120 to 225 gpm shall be 4 inch Class-160 PVC.
IRRIGATION
02810-2
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
2.05 PVC PIPE FITTINGS
1. Fittings for PVC pipe(sizes 2 inch and below)shall be Schedule 40,solvent weld PVC fittings as
manufactured by Dura, Lasco, Spears or approved equal.
2. Fittings for PVC directional fittings (sizes 2-1/2 inch and above) shall be ductile iron ringtite
fittings as manufactured by Harco or approved equal.
3. Fittings for swing joints and valves(sizes 2-1/2 inch and above)shall be PVC ringtite tapped tees
as manufactured by Harco or approved equal.
4. All PVC threaded connections in and out of valves shall be made using Schedule 80 PVC toe
nipples and Schedule 40 PVC couplers or socket fittings. Schedule 40 threads shall not be used
for installation
5. PVC solvent shall be NSF approved,for Type I and Type II PVC pipe,and Schedule 40 fittings.
Cement is to meet ASTM D2564 and FF493 for potable water pipes.PVC solvent cement shall
be Rectorseal Gold, or equal, and shall be used in conjunction with the appropriate primer
6. All nipples to be schedule 80 PVC.
7. No slip,bolt, clamp or snap type saddles shall be used for installation.
2.06 POLYETHYLENE PIPING
1. Lateral piping in sizes 1 inch and 1-1/4 inch shall be polyethylene (PE-3408) pipe, NSF
approved, SDR 15, Type III, Grade 3, Class C conforming to ASTM D2239, with a minimum
pressure rating of 100 psi as manufactured by Oil Creek or equal.
2. Polyethylene Pipe Sizing:
1. Landscape zone pipe with flows from 0 to 12.9 gpm shall be 1 inch polyethylene piping.
2. Landscape zone pipe with flows from 13 to 22.9 gpm shall be 1-1/4 inch polyethylene
piping.
3. No polyethylene shall be allowed on the athletic fields.
2.07 POLYETHYLENE PIPE FITTINGS
1. Fittings for polyethylene pipe shall be insert PVC or Nylon type fittings. Fittings shall conform
to NSF standards and be attached with two(2)Oetiker or equal dog eared stainless steel clamps
on each barb. Fittings shall be per ASTM D2609 as manufactured by Dura, Lasco, Spears or-
equal.
2.08 ISOLATION VALVES
1. Isolation ball valves for electric valves,drains,air vacuum/relief valves and mainline isolation(2
inches and below) shall be of bronze construction, US manufacture, 3/4 port, 600 WOG with
steel cross handle and chrome plated ball. Ball valves to be as manufactured by Apollo, series
70-100 or pre-approved equal.
IRRIGATION
02810-3
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
2. Mainline isolation gate valves(2-1/2 inches and above)in line sizes at locations as indicated on
the drawings shall be cast iron epoxy coated ringtite valves, US manufacture, 200 psi rated,
stainless steel stem,2 inch operating nut and replaceable disc as manufactured by Waterous 500
Series or approved equal.
3. Isolation valves shall be installed prior to each individual zone valve or zone manifold and where
the mainline exits from the building, immediately outside the building.
2.09 ELECTRIC CONTROL VALVES
1. Electric control valves for sprinkler zones shall be 1, 1-1/2 or 2 inch remote control,diaphragm
type fiber glass body valves with flow control as manufactured by Weathermatic,21000 Series or
approved equal.
1. Valve sizes shall be as follows:
1. Zones with flows of 3-25 gpm shall have a 1 inch control valve.
2. Zones with flows of 26-39 gpm shall have a 1-1/2 inch control valve.
3. Zones with flows of 40-90 gpm shall have a 2 inch control valve.
2.10 BLOW OUT ASSEMBLY
1. Install blow out assembly using a line size isolation ball valve followed by a 1 inch quick
coupling valve, immediately outside the exit of irrigation mainline from building. Additional
quick coupling valves shall be located as necessary to insure the proper operation of the irrigation
system. All such fixtures shall be installed at the contractor's expense.
2.11 QUICK COUPLING VALVES
1. Quick coupling valves shall be of cast brass construction with a working pressure of 150 psi.
2. The valve seat disc plunger body shall be spring loaded so that the valve is normally closed under
all conditions when the coupler is not inserted.
3. Quick coupling valves shall be 1 inch in size with locking vinyl cover as manufactured by
Weathermatic,Model V 144RL or approved equal.
4. Supply 1-C 100 Weathermatic keys and I-No. 11 Weathermatic swivel hose ells or approved
equal for every six quick coupling valves, minimum 2.
5. Install one quick coupling valve for every five irrigation zones.
2.12 VALVE BOXES
1. Valve boxes for single electric valves,isolation valves and quick coupling valves shall be 10 inch
round valve boxes with metal detection and bolt down covers as manufactured by Carson or
equal,Model 910.
2. Valve boxes for multiple valve locations shall be 12 inch standard valve boxes with metal
IRRIGATION
02810-4
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
detection and bolt down covers as manufactured by Carson or equal, Model 1419-12,
3. Valve boxes for grounding rods shall be 6 inch round valve boxes with metal detection and bolt
down covers as manufactured by Carson or equal, Model 708.
2.13 SPRINKLERS
1. Spray sprinklers are to be used for all small lawn areas.
1. All part circle and full circle pop up spray sprinklers shall have a 4 inch pop-up height,
accept female thread nozzles and have a 2 inch exposed diameter. All spray sprinklers to
be as manufactured by Hunter SRS Series or approved equal. Provide field installed
optional drain check valve where necessary to prevent low sprinkler drainage.
2. Contractor shall use Rain Bird 1800 series plastic MPR nozzles in all SRS Series
sprinklers.
3. Minimum and maximum spray sprinkler spacing for lawn areas shall be as follows:
1. 10 foot radius nozzle:
Pressure Minimum Maximum
15-19 psi 4'X4' 8.5'X8.5'
20-24 psi 4'X 4' 9.5'X 9.5'
25-29 psi 4'X 4' 11'X 11'
30 psi 4'X4' 12'X12'
2. 12 foot radius nozzle:
Pressure Maximum
15-19 psi 5.5'X 5.5' 11'X 11'
20-24 psi 6'X 6' 12'X 12'
25-29 psi 6.5'X 6.5' 13'X 13'
30 psi TX 7' 14'X14'
3. 15 foot radius nozzle:
Pressure Minimum Maximum
15-19 psi 6.5'X 6.5' 13'X 13'
20-24 psi TX 7' 14'X 14'
25-29 psi 8.5' X 8.5' 16.5'X 16.5'
IRRIGATION
02810-5
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
30 psi 9'X 9' 18'X 18'
4. Side strip nozzle:
Pressure Minimum Maximum
15-19 psi 2.5'X 8' 4'X 15.5'
20-24 psi 2.5'X 8.5' 4'X 17'
25-29 psi 2.5'X 8.5' 4'X 17'
30 psi 2.5'X9' 4'X18'
5. End strip nozzle:
Pressure Minimum Maximum
15-19 psi 2.5'X 8' 4'X 15.5'
20-24 psi 2.5'X 8.5' 4'X 17'
I
25-29 psi 2.5'X 8.5' 4'X 17'
30 psi 2.5'X 9' 4'X 18'
2. Small rotary sprinklers shall be used for all small lawn areas that are too large for two rows of
spray sprinkles and are too small for medium rotary sprinklers.
1. All full and part circle small rotary sprinklers shall have a 40 to 360 degree adjustable
are,variable stator and large filter screen. Sprinklers shall be as manufactured by Hunter
PGM-04-A Series, or approved equal. Nozzle as follows: 0-112 degrees, 0.75 nozzle;
113-202 degrees, 1.5 nozzle;203-292 degrees,2.0 nozzle;293-360 degrees,3.0 nozzle.
Use factory installed drain check valve where necessary to prevent low sprinkler
drainage.
1. Minimum and maximum small rotary sprinkler spacing for lawn areas shall be
as follows:
Pressure Minimum Maximum
30-39 psi 14'X 14' 28'X 28'
40-50 psi 15' X 15' 29'X 29'
3. Medium Rotary sprinklers shall be used for all large non-athletic field lawn areas.
1. All full and part circle medium rotary sprinklers shall have rubber covers, 40 to 360
degree adjustable arcs, and large dirty water screens.Medium rotary sprinklers to be as
manufactured by Hunter PGP Series,or approved equal. All full circle medium rotary
IRRIGATION
02810-6
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
sprinklers shall be PGP-360 or 36V Series and all part circle medium rotary sprinklers
shall be Hunter PGP-ADJ or ADV Series. Nozzles to be as follows: 0-112 degrees,#3
nozzle; 113-202 degrees, #6 nozzle; 203-292 degrees, #8 nozzle; 293-360 degrees#9
nozzle. Use factory installed drain check valve where necessary to prevent low sprinkler
drainage.
1. Minimum and maximum large rotary sprinkler spacing for lawn areas shall be as
follows:
Pressure Minimum Maximum
30-39 psi 21'X 21' 42'X 42'
40-49 psi 23'X 23' 45.5'X 45.5'
50-59 psi 24' X 24' 48'X 48'
60 psi 24.5'X 24.5' 49'X 49'
2.14 FLUSHING VALVES
1. Automatic flush valves shall be constructed of black molded plastic with insert barbed fitting end
configuration. The top of the flush valves shall have six openings from which debris or sediment
can pass through from the system to the atmosphere or valve box. Flush valve shall be 1 gallon
flush, as manufactured by Netafim, Model TLFV or approved equal.
2. Provide flushing valves at the low point of each drip irrigation zone.
2.15 AIR/VACUUM/RELIEF VALVES
I. The air/vacuum relief valves shall be constructed of black plastic with Yz inch male pipe thread
capable of mating with a threaded PVC reduction bushing. Air Vacuum relief valves shall be as
manufactured by Netafim, Model TLAVRV or approved equal.
2.16 PRESSURE REGULATING VALVES
1. Pressure regulators shall be spring operated piston type unit with externally accessible regulation
unit that can be serviced without removing the valve from the system. The body shall be molded
of black plastic with a combination of male/female threaded inlet and outlet. Removable and
interchangeable springs shall be color coded to denote varying pressure ranges. Pressure
regulator shall be 3/4 inch in size, 20 psi, 0.5 to 5 gallons per minute. The pressure regulator
shall respond immediately to any inlet pressure variation. Pressure regulators shall be as
manufactured by Netafim, Model PRV075LF20 or approved equal.
2.17 FILTERS
I. The filter shall be a 3/4 inch plastic filter consisting of a two piece threaded housing with o-ring
IRRIGATION
02810-7
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
seal. The filter screen shall be 120 mesh size. Flushing outlet shall be 3/4 inch. Filter shall be as
manufactured by Toro,Model DF-075-120.
2.18 CONTROLLER
1. Controller shall be electronic in construction with capability of up to 99 minute run time per zone
in increments of 1 minute. Controller to have three independent programs, auto/off switch and
be capable of manual and semi-automatic operation. Controller shall have water budgeting
feature and internal transformer. Controller shall have a non-volatile memory and self diagnostic
electronics and circuit breaker. Terminal strip connections shall be easily accessible. The
Controller shall be U.L.listed. The unit shall be 120 volt,60 Hertz,A.C.type. Controller shall
be as manufactured by Rain Bird, Model ESP-MC, stations as required, or approved equal.
2. Keys shall be turned over to Owner's Representative.
2.19 GROUNDING
1. Each controller shall be grounded minimum to a 5/8 inch x 10 foot long copper clad grounding
rod with#6 bare copper wire. Connect wire to rod with Cadweld connector,Model RT]-161 L.
Cover grounding rod with 6 inch econo valve box.
2.20 RAIN SHUTOFFS
1. Rain shut-offs shall be plastic in construction with adjustable interruption point and attached
mounting bracket. Rain shut-offs shall be Mini-Click II as manufactured by Glen-Hilton
Products or equal
2. A separate and individual rain shut-off shall be installed for each controller.
2.21 CONTROLLER ENCLOSURE
I. The enclosure shall be vandal and weather resistant in nature manufactured entirely of 304 grade
stainless steel. The main housing door shall be louvered at the bottom and equipped with a
hollow center thermoplastic door seal. The entry lip shall be louvered on the backside. Filter
screens shall cover all louvers. The top entry lid shall have two gas springs, for easy access, a
continuous stainless steel piano hinge,and a three point locking mechanism with provisions for
padlock. Removable stainless steel tray shall be provided for the mounting of electronics and
other equipment.
2. The controller shall be a NEMA 3R Rainproof Enclosure as listed by Underwriters Laboratories,
Inc.
3. Controller enclosure shall be manufactured by Strong Box,model SB-16SS or equal.
2.22 WIRING FOR ELECTRICAL VALVES
I. All valve control and common wire shall be minimum 914,single strand,solid copper,600v,UL
Listed, polyethylene jacketed, direct burial and shall meet all state and local codes for this
service. Individual wires must be used for each zone valve. Common wire shall be white in
IRRIGATION
02810-8
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
color. White color shall be used for common wire only. All wire for sprinkler zones shall be red
in color. Extra power wires for future use shall be blue in color. Wire shall be manufactured by
Paige Electric or equal.
2. In ground wire connections shall be U.L.Listed Paige DBM or equal splice kits. All wire splices
shall be made in valve boxes, at controller or at valves.
3. Wire type and method of installation shall be in accordance with local codes for NEC Class II
circuits of 30 volt a.c. or less.
4. Two extra power wires shall be installed from the controller to the furthest zone in two
directions, four extra wires total per controller.
2.23 PIPE SLEEVES UNDER PAVEMENTS & WALKS
1. Sleeves shall be installed for all irrigation pipes under non-soil areas. Sleeves shall be minimum
two pipe sizes larger than the total size of pipe going through them;minimum sleeve size shall be
3 inch. PVC plastic,minimum Class 160, SDR 26,water pipe shall be used.
2.24 SWING JOINTS
1. All spray, small and medium sprinklers shall be installed on 2-ell, thick wall, highly flexible
polyethylene swing pipe assemblies, minimum length 6 inches, maximum length 18 inches.
Barbed ells shall be threaded, not push on type.
2. All 1 inch inlet sprinklers to be installed on PVC unitized body swing joints with one piece riser
assembly. Swing joints to be factory assembled with 360 degree O-ring seals as manufactured by
Dura,Lasco or equal. All connections to be threaded,no glued connections shall be allowed on
the swing joints.
3. Quick couplers to be installed on one inch Schedule 40, unitized PVC swing joints with brass
inserts in valve boxes as manufactured by Lasco or approved equal. Connect to quick coupling
valve with minimum 1 inch x required length brass nipple.
2.25 MARKING TAPE
I. Marking tape shall be metallic foil laminated between two layers of impervious plastic film not
less than 2 inches wide. The adhesive shall be compatible with the foil and film. Total thickness
of tape shall not be less than 5 mil. Imprint shall be 3/4 or larger bold black letters stating
"Caution: Irrigation Water Line Below" and repeated every 24 inches. Color shall be safety
precaution blue. Tape must be capable of being detected electrically. Tape to be manufactured
by Lineguard, Inc. or approved equal.
2.26 BOOSTER PUMP
1. In case of low pressure on site,the contractor shall supply and install a booster pump designed to
supply the required gallons per minute at the required irrigation system pressure.
2.27 PRESSURE REDUCING VALVE
IRRIGATION
02810-9
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
1. In case of high pressure on site contractor to supply and install a pressure reducing valve,Watts
U5-13 or equal on the irrigation plumbing following the water meter and backflow preventer.
PART 3 - EXECUTION
3.01 EXAMINATION
1. Point of Connection:The system shall be connected to the municipal water supply.Contractor to
coordinate and verify location and size of pipe, with the Owners Representative.
2. Electrical Connection: coordinate and verify location,with Owners Representative.
3. Make all field measurements necessary for the work noting the relationship of the irrigation work
to the other trades. Coordinate with other trades(landscaping and other site work trades).
3.02 PREPARATION
1. At all times,protect existing irrigation,landscaping,paving,structures,walls,footings,etc.from
damage. Any inadvertent damage to the work of another trade shall be reported at once.
2. Prior to installation,field locate and protect from damage site improvements such as drainage and
utility fixtures,lights,pavements, and existing plantings.
3.03 SLEEVING INSTALLATION
1. Provide class 160 PVC sleeves wherever wire or piping is going under non-landscaped areas. No
cutting and patching will be permitted.
2. If finished pavement is in place, the Contractor shall bore under the pavement for sleeving
installation using personnel experienced in the procedure. Contractor shall be responsible for all
damage to finished paving and landscaping due to improper boring.
3. If finished walls are in place, the Contractor shall core the wall for sleeving installation using
personnel experienced in the procedure. Contractor shall be responsible for all damage to
finished walls and landscaping due to improper coring.
4. Mark all sleeve locations in the field and on Record Drawings.
3.04 AUTOMATIC CONTROLLER INSTALLATION
I. Wire controller in accordance with the manufacturer's written instructions.
2. Install controller in specified outdoor controller cabinet if installed exterior to the building.
Coordinate and confirm final location with the Owner's Representative.
3. Contractor to wire valves into controller and set program.
4. All wiring to meet National Electric Code requirements.
IRRIGATION
02810-10
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
5. Licensed personnel shall hard wire controller to electrical supply.
3.05 CONTROLLER ENCLOSURE INSTALLATION
1. Contractor shall install stainless steel enclosure. Final location shall be as approved by the
Owner's Representative.
2. Mount enclosure securely to preformed,cast in place,concrete base measuring 29x36x6. Utilize
gravel base beneath concrete pad and#4 rebar for strength and stability. Concrete base shall
exceed enclosure dimensions by 6 inch minimum in all 4 directions. Concrete base shall be
tapered from enclosure outward to direct rain water away from enclosure,and enclosure shall be
level
3. Concrete base shall have two(2)2 inch sweep elbows and two(2) 1 inch sweep elbows installed
into enclosure. Each 2 inch conduit shall service wiring for one controllers field wires,one(1) 1
inch conduit to utilize grounding wires and the remaining 1 inch conduit shall carry 120 volt
power wire.
3.06 INSTALLATION OF PIPE AND FITTINGS
1. Using proper width trencher chain excavate a straight and true trench to a depth of f 2 inch of
pipe invert elevation.
2. Loam encountered within the limits of trench excavation for irrigation mains and branch lines
shall be carefully removed to the lines and depths required and stockpiled for subsequent
replacement in the upper 6 inches of the trench from which it was excavated. Such removal and
replacement of the quantities of loam shall be considered incidental to the irrigation system and
no additional compensation will be allowed therefore.
3. Pipe shall be laid on undisturbed trench bottom provided suitable base is available - no rock
larger than 1 inch or sharp edges; if not, excavate to 2 inch below pipe invert and provide sand
base or crushed stone upon which to lay pipe. Backfilling shall be accomplished as follows: the
first 10 inch of backfill material shall contain no foreign matter and no rock larger than 1 inch in
diameter. Carefully place material around pipe and wire and tamp in place. Remainder of
backfill shall be laid-up in 6 inch(maximum) lifts and tamped to compaction with mechanical
equipment matching adjacent undisturbed area. Frozen material shall not be used for backfill.
4. Make all solvent-weldjoints in strict accordance with manufacturer's recommendations,making
certain not to apply an excess of primer or solvent, and wiping off excess solvent from each
connection. Allow connections to set minimum 24 hours before pulling or pressure is applied to
the system. Provide for expansion and contraction as recommended. Wire shall be laid in same
trench as mainline and at pipe invert(see Wire Installation).
5. Clean bell and spigot ends and make all gasketed joints in strict accordance with manufacturer's
recommendations,making certain not to apply an excess of lubricant,and wiping off any excess
lubricant from each connection. Maximum deflection per joint shall not exceed manufacturer's
recommendations
6. Mainline pipe shall have minimum 22 inches of cover(excavate to invert as required by pipe
size). Lateral pipe shall have minimum 16 inches of cover for PVC and 10 inches of cover for
IRRIGATION
02810-11
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
polyethylene(excavate to invert as required by pipe size).
7. Cut plastic pipe with hand saw or pipe-cutting tool,removing all buns at cut ends. All pipe cuts
are to be square and true. Bevel cut end as required conforming to manufacturer's Specifications.
8. Every precaution shall be taken to prevent foreign material from entering the pipe while it is
being placed in the trench. At times,when installation of the piping is not in progress,the open
end(s)of the pipe shall be closed by a watertight plug or other means. All piping which cannot
temporarily be joined shall be sealed to make as watertight as possible. This provision shall
apply during the lunch hour as well as overnight. Pipe not to be installed that day shall not be
laid out. Should water enter the trench during or after installation of the piping, no additional
piping may be installed or backfilled until all water is removed from the trench. Pipe shall not be
installed when water is in the trench, when precipitation is occurring, or when the ambient
temperature is at 350 F or below. PVC pipe shall be snaked in the trench to accommodate for
expansion and contraction due to changes in temperature.
9. In installing irrigation pipe the Contractor shall route the pipe as necessary to prevent damage to
tree roots. Where trenching must occur near trees or within drip lines, the Contractor shall
provide proper root pruning and sealing methods to all roots 1 inch and larger
10. Throughout the guarantee period it will be the responsibility of the Contractor to refill any
trenches that have settled due to incomplete compaction.
11. Pulling of pipe will be allowed provided soil is suitable and specified depth of bury can be
maintained.
3.07 FITTING INSTALLATION
1. Install in conformance with manufacturer's written instructions.
3.08 ELECTRIC VALVE INSTALLATION
1. All valve access boxes shall be installed on a level, 4 inch crushed stone base. Grade of bases
shall be consistent throughout the project so that finish grades fall within the limits of work.
Valves shall be set plumb with adjusting handle and all bolts, screws and wiring accessible
through the valve box opening. Finish elevation of all boxes shall be at grade. All crushed stone
to be supplied by the Contractor and installed before valve box.
2. Furnish and install a valve access box for each electric valve, hydrant, quick coupling valve,
isolation valve,grounding rods valve manifold and wire splice.
3.09 QUICK COUPLING VALVE INSTALLATION
1. Provide quick coupling valves as follows:
1. At exit of mainline from building or water supply enclosure as part of the blow-out
assembly
2. At dead ends of mainline piping.
3. Provide additional quick coupling valves as specified.
IRRIGATION
02810-12
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
2. Set plumb and perpendicular to finish grade in valve box.
3. Quick couplers to be mounted on 1 inch PVC swing joints with brass insert and minimum I inch
x required length brass nipple. Minimum swing joint length to be 12 inches.
3.10 SPRINKLER INSTALLATION
I. All spray,small rotary and medium rotary sprinklers shall be mounted on swing pipe with barbed
ells. Minimum swing pipe length-6 inch;maximum-18 inch.
2. All large rotary,sprinklers to be mounted on 1 inch PVC swing joints. 1 inch PVC swing joints
shall not be installed in the vertical position.
3. Adjust sprinkler zone pressure with flo-control on valve.
4. Flushing: sprinklers shall be installed only after flushing of system has been completed.
5. Grade: Install sprinklers and valve boxes flush with finish grade.
3.11 WIRING INSTALLATION
1. Wiring shall be installed along with the main line. Multiple wire bundles shall be cinched
together at maximum 12 foot centers using plastic cable cinches and shall be laid beside,and at
the same invert as, the irrigation lines. Sufficient slack for expansion and contraction shall be
maintained and wiring shall at no point be installed tightly. Provide an additional 8 inches to 12
inches slack at all changes of direction. Wiring in valve boxes shall be a sufficient length to
allow the valve solenoid, splice, and all connections to be brought above grade for servicing.
This additional slack shall be coiled for neatness in the valve box. Each valve shall have a
separate wire back to the controller.
2. All wire shall be laid in trenches and shall be carefully back-filled to avoid any damage to the
wire insulation or wire conductors themselves. In areas of unsuitable material,the trench shall
have a 2 inches layer of sand or stone dust on the bottom before the wires are laid into the trench
and back-filled. The wires shall have a minimum of 12 inches of cover. Wire not to be installed
that day shall not be laid out.
3. An expansion curl shall be provided within 6 inches of each wire connection to a solenoid,and at
least every 100 feet of wire length on runs more than 100 feet in length. Expansion curls can be
formed by wrapping five (5) turns of wire around a 1 inch diameter or larger pipe and then
withdrawing the pipe
4. Provide a common ground wire of white color. No white color shall be used for power wire.
Power wire shall be red for irrigation zones. Blue shall be used for extra power wires.
5. Service wiring in connection with local codes for 24-volt service. All in-ground wire connec-
tions shall be waterproofed with Paige DBM or equal splice kits. All splices shall be made in
valve boxes(wire runs requiring splices between valve locations shall be provided in splice box--
valve box shall be used). Splice locations shall be shown on the Record Drawings.
6. Contractor to provide a complete wiring diagram showing wire routing for the connections
IRRIGATION
02810-13
RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
between the controller and valves.
7. Provide extra wires coiled neatly in valve box as specified.
3.12 AUTOMATIC RAIN SENSOR INSTALLATION
1. Install to manufacturer's written instructions.
2. Coordinate final location of rain shut-offs with the Owner's Representative.
3.13 ISOLATION VALVE INSTALLATION
1. Install isolation valves as specified. Install all isolation valves on a level crushed stone base so
that they can be easily opened or closed with the appropriate valve wrench. Install specified
valve box over each isolation valve.
3.14 THRUST BLOCKING
1. All ring-tite pipe and fittings shall be blocked with adequately sized thrust blocks as per ASAE
Standard 5376.1. Blocking shall be in accordance with pipe and fitting manufacturer's
recommendations. Thrust blocks shall be installed against undisturbed soil in all cases. Concrete
thrust blocks shall utilize 3,000 psi concrete mixture. Brick, stones,boulders, etc. will not be
accepted as thrust blocks or thrust block material.
3.15 BOOSTER PUMP INSTALLATION
1. Install booster pump system components, if necessary, as per manufacturer's instructions.
3.16 CHECK/TEST/START-UP/ADJUST
1. Flushing:After all piping,hydrants,valves and sprinkler bodies are in place and connected,but
prior to installation of sprinkler internals, flush piping under a full head of water.
2. Testing:
1. Leakage test: test all lines for leaks under operating pressure. Repair all leaks and re-
test.
2. Coverage test: perform a coverage test in the presence of the Owner's Representative
(notify Landscape Architect at least seven (7) days in advance of scheduled coverage
test). Representative will determine if the water coverage is complete and adequate.
Readjust sprinklers locations as necessary or directed to achieve proper coverage.
3.17 FIELD QUALITY CONTROL
1. Field Drawings: during progress of work contractor shall keep an up-to-date annotated irrigation
drawing showing exact locations of the installed irrigation system.
2. Field drawing shall form the basis for the Record Drawing of the irrigation system required for
project close-out.
IRRIGATION
02810-14
• RIVERVIEW PLACE LLC SALEM, MASSACHUSETTS
April 2, 2009
3.18 ADJUSTING
1. Adjust sprinkler sprinklers,valve boxes,and quick coupling valves to grade as required,so that
they will not be damaged by mowing operations.
2. Continue sprinkler coverage adjustment as required by settlement,etc.,throughout the guarantee
period.
3. Each control zone shall be operated for a minimum of 5 minutes and all sprinklers checked for
consistency of delivering water. Adjustments shall be made to sprinklers which are not
consistent to the point that they match the manufacturer's standards. All sprinklers, valves,
timing devices or other mechanical or electrical components,which fail to meet these standards,
shall be rejected,replaced and tested until they meet the manufacturer's standards.
4. If settlement occurs and adjustments in pipe,valves,and sprinklers are necessary to bring system
to proper level of permanent grades,the Irrigation Contractor shall make all adjustments without
extra cost to the Owner as a part of the work of this Contract.
3.19 CLEANING
1. Upon completion of all installation work, Contractor shall remove all leftover materials and
equipment from the site in a safe and legal manner.
2. Site improvements
1. Wash and sweep clean site improvements such as drainage and utility fixtures,
pavements, existing plantings, and site furnishings.
3.20 PROTECTION
1. Protect Work of this Section until Acceptance.
2. Protect irrigation system from damage by construction traffic and from contamination by
construction materials.
3.21 GUARANTEE
1. The Contractor shall give the Owner a written guarantee to make good any and all faults and
defects in the irrigation system due to defective or improper materials, design or workmanship
that may appear within one year from the date of final acceptance and he shall make all changes
within the guarantee period which are required to put the system in proper condition and
operation,without cost to the Owner. An additional 2 year warranty on parts excluding any labor
shall be provided. Record Drawings shall be furnished to the Owner upon completion of work.
END OF SECTION
IRRIGATION
02810-15
i `'
1 ■ ■
II. N. Morant & Co., Inc.
■■ PO Box 4485/57 Wharf 8treet, Unit 2G (Delivery)
eSalem, MasBachuaetts 01940
Phone (978) 440-5025 Fax (978) 6070045
TO: Mike O'Brien
FROM: Stephen W. Livermore
DATE: December 23, 2008
RE: Riverview Place — Conceptual Building Drainage Description
Dear Mr. O'Brien:
The following io the conceptual building drainage narrative for buildings #1 through
#3 for the proposed Riverview Place project:
Building #1
1. Roof drainage will include interior roof drains for flat roofs and decks and
will be linked below the basement slab level into the common single point
discharge for Building #1.
2. Interior parking garage drainage will include interior floor drains at flat
parking decks (basement through 2"d floor levels) and will be connected
into an oil/water separator system below the basement 51ab and then into
the common single point discharge for Building #1.
Building #2
1. Roof drainage will include interior roof drains for flat roofs, decks, and
perimeter gutters w/ internal drains at pitched roofs and will be linked
below the basement slab level into the common single point discharge for
Building #2.
2. Interior parking garage drainage will include interior floor drains and will be
connected into an oil/water Separator system below the basement slab
and then into the common single point discharge for Building #2.
(1) continued.....
t
° Riverview Place — Conceptual Building Drainage Description
December 23, 2008
Page 2
Building #3
1. Roof drainage will include interior roof drains for flat roofs, decks, and
perimeter gutters w/ internal drains at pitched roofs and will be linked
below the basement slab level into the common single point discharge for
Building #3.
Pleaoe call with questions and/or comments.
Thanks
Stephen W. Livermore
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SITE DEVELOPMENT PERMIT PLAN Prepared For Prepared- By. SCALE 1 N=40'
R`verview Place LLC Eastern Land Survey Assoc., Inc. 0 40 Be
D r R I VE R VI E W PLACE 5 Cider Mill Road Christopher R. Mello P.L.S.
o m W SALEM , MASSACHUSETTS Peobodt, MA. 01960 104 Lowell St,
Peabody MA 01960 OA JANUARY 24, 2008
---1 (978) 531-8121 REVISIONS
z WATERSHED PLAN 1. NOVEM8ER 12, 2008
0
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