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• KLEINFELDER <br /> File No. 20-3978-01.W 10 <br /> July 26, 1997 <br /> Section of This Recommended Recommended Remediation Goal ' <br /> Letter/Area Lead Agency <br /> 4.4/Existing and PHS/EHD This phase of work is unrelated to the pond <br /> Former Pond and closure(which is within the jurisdiction of the <br /> Pond Bottom RW CB. We propose the use of TTLC and STLC <br /> Locations for metals per 22CCR§66261 and U.S. EPA <br /> Region IX Preliminary Remediation Goals (PRGs) <br /> for Industrial Property dated August 1, 1996 for all <br /> other contaminants, as follows: <br /> • 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) <br /> and 5 mg/L (STLC) <br /> • copper(soil) =2,500 mg/kg (TTLC) and 25 <br /> mg/L(STLC) <br /> • lead(soil)= 1,000 mg/kg(TTLC) and 5 mg/L <br /> (STLC) <br /> • mercury(soil) =20 mg/kg(TTLC) and 0.2 <br /> mg/L(STLC) <br /> • molybdenum (soil) =3,500 mg/kg(TTLC) and <br /> 350 mg/L(STLC) <br /> • nickel (soil)=2,000 mg/kg(TTLC) and 20 <br /> mg/L (STLC) <br /> • vanadium (soil) =2,400 mg/kg(TTLC) and 24 <br /> mg/L(STLC) <br /> • zinc(soil)=5,000 mg/kg(TTLC) and 250 <br /> mg/L (STLC) <br /> • 4-4'-DDE(soil)= 5.6 mg.kg <br /> • Linuron (soil) = 1,400 mg/kg <br /> • total xylenes (soil) =320 mg/kg <br /> 20-3978-0LW1012017L1S5 Page 39 of 50 Copyright 1997,Kleinfelder,Inc. <br />