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ICF KAI S ` ENVIRONMENT &ENERGY GROUP y{1 AL ICF Kaiser Engineers, Inc. ._`3 € �'`'`t 11290 Point East Drive, Suite 200 Rancho Cordova, CA 95742 � ; x : 916/852-3700 Fax 916/852-3777 ] {''� I� - ` May 24; 1996 Ms. Mary Meays, Senior RENS San"Joaquin County Public Health Services Environmental Health Division P.O. Box 2009 Stockton, CA. 95201-2009 Subject: Request for Closure of Stockpiled Soil, Union Ice Facility 1320,West Weber Street, Stockton, California; Site Code 241434 Dear Ms. Meays: On behalf of Union Ice Limited Partnership -(Union Ice), ICF Kaiser has prepared this request for closure of soil that was excavated-from the former Union Ice facility at 425 North Union Street, Stockton and is currently stockpiled at the Union Ice facility at 1320 Weber Street in Stockton California. i ICF Kaiser prepared a soil remediation workplan dated December 22, 1995 for.the r disposal.of approximately 150 cubic yards of hydrocarbon-affected soils. The workplan was prepared in response to a request'from'the San Joaquin County Public Health ` Services Environmental Health Division (PHS/EHD) in a letter dated November 22, .1995. ;The soil volume in the December 1995 workplan was based'upon a proposed cleanup level of 200 mg/kg for total petroleum hydrocarbons as diesel.. PHS/EHD responded in a.letter dated December.29, 1995, that a 200 mg/kg cleanup level would not be approved but that.a 100 mg/kg clean up level would. A revised'remediation workplan dated January 11,.1996 presented the methods that would be used to remediate the stockpiled soil to the followingsoil cleanup goals: • Total petroleum hydrocarbons as oil (TPH-0) at 1,000 mg/kg; and • TPH as diesel {TPH-d) at. 1.00 mg/kg. A letter to PHS/EHD dated April 10, 1996 indicated that the soil- where the highest TPH concentrations were detected (CS-13) would be disposed of in an.appropriate landfill to. bring the average TPH-d concentration of the.stockpile below 100 mg/kg.