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KLEINFELDER <br /> File No. 20-3978-O1.W10 <br /> July 26, 1997 <br /> Section of This Recommended Recommended Remediation Goal ' <br /> Letter/Area Lead Agency <br /> 4.12/Underground PHS/EHD TTLC and STLC Regulated Levels for metals per <br /> Structures and Beet 22CCR§66261 of. <br /> Seed Warehouse • arsenic(soil)=500 mg/kg(TTLC)and 5 mg/L <br /> (STLC) <br /> • barium(soil)= 10,000 mg/kg(TTLC) and 100 <br /> mg/L(STLC) <br /> • cadmium(soil)= 100 mg/kg(TTLC)and <br /> 1 mg/L(STLC) <br /> • total chromium(soil)=2,500 mg/kg(TTLC)and 5 <br /> mg/L(STLC) <br /> • cobalt(soil)=8,000 mg/kg(TTLC)and 80 mg/L <br /> (STLC) <br /> • copper(soil)=2,500 mg/kg(TTLC)and 25 mg/L <br /> (STLC) <br /> • lead(soil)= 1,000 mg/kg(TTLC)and 5 mg/L <br /> (BTEC) <br /> V • mercury(soil)=20 mg/kg(TTLC)and 0.2 mg/L <br /> (STLC) <br /> • molybdenum(soil)=3,500 mg/kg(TTLC)and 350 <br /> mg/L(BTEC) <br /> ^/ • nickel(soil)=2,000 mg/kg(MC)and 20 mg/L <br /> W I/1 (STLC) <br /> • silver(soil)=500 mg/kg(TTLC)and 5 mg/L <br /> f/ (STLC) <br /> • thallium(soil)=700 mg/kg(IMC)and 7 mg/L <br /> (STLC) <br /> I I • vanadium(soil)=2,400 mg/kg(TTLC)and 24 <br /> I I mg/L(STLC) <br /> • zinc(soil)=5,000 mg/kg(TTLC)and 250 mg/L <br /> (STLC) <br /> Study3 for all fuels and other applicable <br /> hydrocarbons <br /> U.S. EPA Region IX Preliminary Remediation Goals <br /> (PRGs) for Industrial Property dated August 1, 1996 <br /> of. <br /> • 4,4'-DDE(soil)=5.6 mg/kg •n\ Q <br /> • 4,4'-DDT(soil)=5.6 mg/kg <br /> • 2,4-DB (soil)=5,500 mg/kg <br /> 1 , <br /> 20-3978-01.W10 12017LI55 Page 44 of 50 Copyright 1997,Kleinjelder,Inc. <br />