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Table 1: Metals Results in Soil - Summary <br />Chromium, <br />Attorney Client Privilege/ <br />Attorney Work Product <br />Van - <br />Chemical <br />Barium <br />total <br />Cobalt <br />Copper <br />Lead <br />Molybdenum <br />Nickel <br />adium <br />Zinc <br />Units <br />mg/kg <br />mg/kg <br />mg/kg <br />mg/kg <br />mg/kg <br />mg/kg <br />mg/kg <br />mglkg <br />mg/kg <br />April 2019 DTSC Screening Level Residential Soil <br />NE <br />NE <br />NE <br />NE <br />801.) <br />NE <br />15,000 <br />NE <br />NE <br />April 2019 DTSC Screening Level Industrial Soil <br />NE <br />NE <br />NE <br />NE <br />320"a <br />NE <br />64,000 <br />NE <br />NE <br />November 2019 US EPA RSL - Residential Soil <br />15,000 <br />120,000 <br />23 <br />3,100 <br />390 <br />- <br />390 <br />23,000 <br />November 2019 US EPA RSL - Industrial Soil <br />220,000 <br />1,800,000 <br />350 <br />47,000 <br />5,800 <br />5,800 <br />350,000 <br />Sample Depths <br />Location Sample Date (ft) Note <br />SS -01 1/24/2019 0.1-0.5 <br />310 <br />10 <br />3.4 <br />18 <br />15 <br />3.2 <br />14 <br />22 <br />82 <br />SS -02 1/24/2019 0.1-0.5 <br />79 <br />7.6 <br />2.9 <br />9.4 <br /><5.0 <br /><2.0 <br />5.5 <br />22 <br />34 <br />SS -03 1/24/2019 0.1-0.5 72 6.4 2.7 11 <5.0 <2.0 4.5 18 80 <br />SS -03 1/24/2019 0.5-1 43 7.5 3.3 5.7 <5.0 <2.0 5.7 24 28 <br />Notes and Abbreviations <br />Only metals detected in at least one sample are shown <br />ft = feet <br />mg/kg = milligrams per kilogram <br />DTSC Screening Level (SL) shown if established. US EPA Regional Screening Level (RSL) shown if SL not established. <br />NE = Not Established <br />(a) Lead and Compounds - Only Non Cancer SL established <br />Technical Memorandum -15655 Mitchell Road, Manteca, California Page 1 of 1 <br />