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SIMILAR SOILS EVALUATION
Page 1 of 1 LOCATION SC-5 SC-6 SC-7 SAMPLING DATE 6/24/2025 6/24/2025 6/24/2025 LAB SAMPLE ID L2539756-01 L2539759-01 L2539761-01 SOIL SOIL SOIL Units Extractable Petroleum Hydrocarbons 2-Methylnaphthalene mg/kg ND(0.358) ND(0.346) ND(0.356) ND(0.358) 0.7 0.7 11.3 0.5 0.7 Acenaphthene mg/kg ND(0.358) ND(0.346) ND(0.356) ND(0.358) 4 4 37 0.5 4 Acenaphthylene mg/kg ND(0.358) ND(0.346) ND(0.356) ND(0.358) 2 2 0.42 0.5 1 Anthracene mg/kg ND(0.358) ND(0.346) ND(0.356) ND(0.358) 1,000 1,000 753 1 10 Benzo(a)anthracene mg/kg 0.537 ND(0.346) ND(0.356) 0.537 20 20 1,540 2 7 Benzo(a)pyrene mg/kg 0.635 ND(0.346) ND(0.356) 0.635 2 2 85.8 2 2 Benzo(b)fluoranthene mg/kg 0.714 ND(0.346) ND(0.356) 0.714 20 20 996 2 7 Benzo(ghi)perylene mg/kg 0.382 ND(0.346) ND(0.356) 0.382 291 1,000 38.8 1 10 Benzo(k)fluoranthene mg/kg ND(0.358) ND(0.346) ND(0.356) ND(0.358) 200 200 745 1 10 C11-C22 Aromatics, Adjusted mg/kg 27.3 ND(6.93) 10.1 27.3 1000 1,000 1,910 * * C19-C36 Aliphatics mg/kg 52 ND(6.93) 38.5 52 785 3,000 157 * * C9-C18 Aliphatics mg/kg ND(7.17) ND(6.93) ND(7.11) ND(7.17) 230 1,000 30.6 * * Chrysene mg/kg 0.632 ND(0.346) ND(0.356) 0.632 200 200 1,370 2 20 Dibenzo(a,h)anthracene mg/kg ND(0.358) ND(0.346) ND(0.356) ND(0.358) 2 2 16.4 0.5 0.7 Fluoranthene mg/kg 1.3 ND(0.346) ND(0.356) 1.3 1,000 1,000 585 4 40 Fluorene mg/kg ND(0.358) ND(0.346) ND(0.356) ND(0.358) 276 1,000 36.8 1 10 Indeno(1,2,3-cd)Pyrene mg/kg 0.415 ND(0.346) ND(0.356) 0.415 20 20 46 1 7 Naphthalene mg/kg ND(0.358) ND(0.346) ND(0.356) ND(0.358) 4 4 8.91 0.5 4 Phenanthrene mg/kg 0.607 ND(0.346) ND(0.356) 0.607 10 10 775 3 10 Pyrene mg/kg 1.07 ND(0.346) ND(0.356) 1.07 1,000 1,000 809 4 40 MCP Total Metals Antimony, Total mg/kg ND(4.15) ND(4.19) ND(4.35) ND(4.35) 20 20 7.69 1 10 Arsenic, Total mg/kg 4.86 3.64 3.4 4.86 20 20 18.1 20 20 Barium, Total mg/kg 53.3 43.2 45.7 53.3 1000 1,000 1,470 50 375 Beryllium, Total mg/kg ND(0.415) ND(0.419) ND(0.435) ND(0.435) 4.42 100 0.442 0.4 4 Cadmium, Total mg/kg ND(0.829) ND(0.837) ND(0.87) ND(0.87) 36.4 80 3.64 2 20 Chromium, Total mg/kg 12.4 12.8 12.2 12.8 100 100 1,340 30 100 Lead, Total mg/kg 145 24.6 56.1 145 200 200 839 100 200 Mercury, Total mg/kg ND(0.084) ND(0.071) ND(0.069) ND(0.084) 20 20 10.6 0.3 3 Nickel, Total mg/kg 11.7 13.3 11 13.3 700 700 678 20 150 Selenium, Total mg/kg ND(4.15) ND(4.19) ND(4.35) ND(4.35) 5 400 ND 0.5 5 Silver, Total mg/kg ND(0.829) ND(0.837) ND(0.87) ND(0.87) 6 100 ND 0.6 6 Thallium, Total mg/kg ND(4.15) ND(4.19) ND(4.35) ND(4.35) 6 8 ND 0.6 6 Vanadium, Total mg/kg 15.9 17.2 17.1 17.2 500 500 406 30 225 Zinc, Total mg/kg 70.4 31.8 37.6 70.4 1,000 1,000 867 100 500 Volatile Petroleum Hydrocarbons Benzene mg/kg ND(0.114) ND(0.116) ND(0.117) ND(0.117) * 2 ND * * C5-C8 Aliphatics, Adjusted mg/kg ND(5.72) ND(5.81) ND(5.84) ND(5.84) * 100 ND * * C9-C10 Aromatics mg/kg ND(5.72) ND(5.81) ND(5.84) ND(5.84) * 100 ND * * C9-C12 Aliphatics, Adjusted mg/kg ND(5.72) ND(5.81) ND(5.84) ND(5.84) * 1,000 ND * * Ethylbenzene mg/kg ND(0.114) ND(0.116) ND(0.117) ND(0.117) * 40 ND * * Methyl tert butyl ether mg/kg ND(0.057) ND(0.058) ND(0.058) ND(0.058) * 0.1 ND * * Naphthalene mg/kg ND(0.229) ND(0.232) ND(0.234) ND(0.234) 4 4 8.91 0.5 4 o-Xylene mg/kg ND(0.114) ND(0.116) ND(0.117) ND(0.117) * 100 ND * * p/m-Xylene mg/kg ND(0.114) ND(0.116) ND(0.117) ND(0.117) * 100 ND * * Toluene mg/kg ND(0.114) ND(0.116) ND(0.117) ND(0.117) * 30 ND * * Notes:mg/kg - milligrams per kilogram (parts per million) * - indicates no value/threshold promulgated for this analyte in this category ND - indicates analyte not detected Reporting Category RCS-1 applies to soure material location and Reporting Category RCS-1 applies to receiving site location Bold 1 - Evaluation considering 310 CMR 40.0032(3) and Similar Soils Provision Guidance Policy WSC#-13-500 (September 14, 2014) - indicates detected concentration in source material would be in excess of a release notification threshold applicable at the receiving site and/or equal to or greater than Limiting Value, indicating source material is significantly higher than the existing concentrations at the receiving site and may not be reused at receiving site. - indicates detected concentration in source material is equal to or greater than applicable Reportable Concentration and not covered by a notification exemption, indicating the source material is Remediation Waste and may not be reused at receiving site. Limiting Soil Concentration for Reuse at Highland Ave Receiving Site A. L. Prime Energy Facility Soil Sample Analytical Data Summary - Characterization of Stormwater Infiltration Areas Source Material Analytical Results Maximum Detected in Source Material Maximum Detected at Highland Ave. Receiving Site Natural Back- ground MCP 2024 RCS-1 Limiting Value Natural Background, RCS-1 Receiving Site 310 CMR 40.0032(3) Similar Soil Evaluation 1 1115 Worcester Road, Framingham, Massachusetts Ref: 2025 06 30 Similar Soils Evaluation/SC-5,6,7