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Attorney Client Privilege/ <br />Attorney Work Product <br />Table 2: TPH Results in Soil <br />Location <br />Date <br />i <br />Sample Depths <br />(ft) <br />em uiesei range <br />Organics <br />(C10 -C28) <br />mg/kg <br />i vm motor un <br />Range Organics <br />(C17 -C44) <br />mg/kg <br />SS -01 <br />1/24/2019 <br />0.1-0.5 <br /><1 <br />13 <br />96 <br />440 <br />Medium aromatic <br />C9 -C16 <br />97 <br />SS -02 <br />SS -02 <br />SS -02 <br />1/24/2019 <br />10/7/2019 <br />10/7/2019 <br />0.1-0.5 <br />1-1.5 <br />2-2.5 <br /><1 <br />NA <br />NA <br />400 Z <br />High aromatic <br />C17 -C32 <br />2,400 <br />30,000 <br />For RSLs, see https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables <br />SS -03 <br />SS -03 <br />1/24/2019 <br />1/24/2019 <br />0.1-0.5 <br />0.5-1 <br /><1,000 <br /><50 <br />SS -03 <br />10/7/2019 <br />2-2.5 <br />NA <br /><24 <br />SS -03 <br />10/7/2019 <br />3-3.5 <br />NA <br /><24 <br />KJ -01 <br />KJ -01 <br />10/7/2019 <br />10/7/2019 <br />0-0.5 <br />1-1.5 <br />NA <br />NA <br />KJ -01 <br />10/7/2019 <br />2-2.5 <br />NA <br />280 Z <br />KJ -02 <br />10/7/2019 <br />0-0.5 <br />NA <br />71 Z <br />KJ -02 <br />KJ -02 <br />10/7/2019 <br />10/7/2019 <br />1-1.5 <br />2-2.5 <br />NA <br />NA <br />69Z <br />280 Z <br />KJ -03 <br />10/7/2019 <br />0-0.5 <br />NA <br />19 J Z <br />KJ -03 <br />10/7/2019 <br />1-1.5 <br />NA <br />4.4 J Z <br />KJ -04 <br />10/7/2019 <br />0-0.5 <br />NA <br />22 J Z <br />KJ -04 <br />10/7/2019 <br />1-1.5 <br />NA <br />10 J Z <br />Notes and Abbreviations <br />ft = feet <br />mg/kg = milligrams per kilogram <br />Z = The chromatographic response does not resemble a typical fuel pattern. <br />J = Estimated concentrations below the laboratory reporting limit. <br />(a) US EPA Regional Screening Levels (RSLs) - November 2019. TPH ranges shown do not <br />correlate directly to ranges. Bold result indicates the possibility that the the High RSL could <br />be exceeded, depending on the carbon chain distribution and molecular structure (aliphatic <br />(b) Sample results shaded in green represent soil that was removed. <br />ISEPA Regional Screening Levels: <br />Technical Memorandum -15655 Mitchell Road, Manteca, California Page 1 of 1 <br />Number of <br />Residential Soil <br />Industrial Soil <br />US EPA TPH Fraction <br />Carbons <br />(mg/kg) <br />(mg/kg) <br />Medium aliphatic <br />C9 -C18 <br />96 <br />440 <br />Medium aromatic <br />C9 -C16 <br />97 <br />560 <br />High aliphatic <br />C19 -C32 <br />230,000 <br />3,500,000 <br />High aromatic <br />C17 -C32 <br />2,400 <br />30,000 <br />For RSLs, see https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables <br />For carbon number, see <br />https://www.epa.gov/risk/regional-screening-levels-frequent-questions#FQ50 <br />Technical Memorandum -15655 Mitchell Road, Manteca, California Page 1 of 1 <br />