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06/16/1997 10:23 4155729730 HK2 INC SEMCO PAGE 02 <br /> SEMCO/HKz, INC. <br /> 17511.B3Lm s?RB,trr • SAN MATT.CAS 94402 • 415 572-8033 • 415 572-9734 FAX <br /> GENNtAL E GU4=040&ENMQNMWrAL COKRACMRS L1cFNsE No.719103(A,9,C57,C61-D40.HAZ.ASB) <br /> June 12, 1997 <br /> Ms. Margaret Lagorio <br /> Supervising REHS <br /> San Joaquin County Public Health Services(SJCPHS) <br /> Envir-onnnotal Health Division <br /> 304 East weber Avenue,Third floor <br /> Stockton, Califomia 95202 <br /> RE: Soil Excavation and Sampling Activities at Thiels Goodyear, 1131 Holly Drive, Tracy. <br /> California(SEMCO Project 96-0315.1.) <br /> Dear Ms. Lagorio. <br /> This letter details the voice mail message I left you on June 12, 1997, regarding soil excavation and <br /> sampling activities scheduled at Thiels Goodyear, 1131 Holly Drive, Tracy, California. The time line <br /> and scope of work is summarized below. <br /> Week of June 15, 1997: <br /> • Collect a soil sample from the hydrocarbon-affected soil and submit it to a state-certified <br /> laboratory for analysis of soluble lead(waste extraction test) and reactivity, corrosivity, and <br /> Ititab. .ty(RCI)for Class H disposal profiling. <br /> June 26, 1997: <br /> • Remove the visqueen-wrapped hydrocarbon-affected soil from the former waste oil tank <br /> cavity and stockpile it onsite, The soil was placed back into the cavity and covered with clean <br /> fill soil fallowing tank removal to facilitate continued use of the site until the soil sample <br /> analytical results were available to indicate proper disposal. <br /> Collect up to four soil samples from the sidewalls of the excavation and analyze the samples <br /> for total petroleum hydrocarbons (TPH) as diesel and motor oil (TPH-D and TPH-MO; <br /> Modified EPA Method go IS)and analyze the highest TPH bearing sample for volatile organic <br /> compounds(VOCs;EPA 8260)and semi volatile organic compounds(SVOCs; EPA Method <br /> 8274)if the TPH concentration exceeds 100 mg/kg. <br /> • Load and transport the hydrocarbon-affected soil to a Class 11 disposal facility. <br />