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C - R 1. <br /> DAMES V�, MOO E ,A PROFESSIONAL LIMITED PARTNERSHIP <br /> 1320 EAST SHAW AVENUE, SUITE A 10, FRESNO, CALIFORNIA 93710 (2 09)222-7892 <br /> FAX(209)_222-1937 <br /> November 8, 1991 <br /> Pacific Gas&Electric Company N r I <br /> San Joaquin Valley Regions <br /> 650"O"Street DEC 1 <br /> Fresno,California 93760-0001 r `�hi <br /> 4i R.O N�i ENT A� HC:_ <br /> NYSE <br /> Attention: Jesus LunaPERIM <br /> b�t <br /> Environmental Coordinator- <br /> General Services Department <br /> =RE: LETI'ER:REPORT <br /> PG&E Stockton Service,Center <br /> 4040 West Lane. <br /> Stockton,California, <br /> INTRODUCTION <br /> At the request of Mike Savage of Pacific Gas&Electric Company(PG&E)Dames&Moore prepared a proposed workplan <br /> for a Problem Assessment Report study for the PG&E Stockton Service Center,property.The problem assessment report <br /> study was understood to have been requested by PG&E subsequent to underground storage tank removals at the subject { <br /> _ a <br /> property.. Chemical analyses.conducted on soil samples obtained at the time-of the tank removals reported low levels <br /> 'of petroleum hydrocarbons as referenced to gasoline in native soils within the excavation,and higher levels-in <br /> j <br /> f overburden soil excavated from atop and around the removed tanks. <br /> The workplan proposed by;Dames&Moore addressed two options for evaluating residual hydrocarbons at the tank <br /> -removal site. The initial phase proposed over-excavation of soils'withinthe bottom of the tank removal pit and i <br /> conducting confirmation sampling and chemical°analyses of native soils below:-in the event-samples obtained from the <br /> I <br /> limits of the over-excavation process report the detectable levels of hydrocarbons,then drilling and subsoil <br /> sampling will.proceed as a second phase of work. <br /> f <br /> I <br /> i <br /> PG&E Stockton Service Center 1� <br /> 00160-290-042 <br /> OFFICES WORLDWIDE - <br />