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PACIFIC <br /> N TAL HEALTH <br /> `4 ENVIRONMENTAL �� �lfr _ <br />• GROUP INC: ' A . H. ;. ,E <br /> •9G SEP 2111M -. 28 - . <br /> September 26, 1996' <br /> Project920-078a1A ... . .` •. <br /> Ms. Mary.Meays r <br /> ,y. <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E. Weber Avenue, Third Floor <br /> r Stockton,CA 9520110388 <br /> Re: Work Plan:for Well Installation <br /> Chevron Service:Station 9-0557;;{ �t <br /> .139 South Center.Street < ' .• _ �• <br /> Stockton,Califgrnia: <br /> Site-Code: 1039.. <br /> Dear Ms.°Meays: <br /> This letter,prepared fbv Pacific Environmental'Group,lnc.'(PACIFIC)on behalf of <br /> Chevron ProductsCompany(Chevron);presents a work plan describing additional off- = <br /> site assessment work at the site(Figures.-Land 2).• This work plan has been prepared in " <br /> response to a letter from the San Joaquin County Public Health Services, Environmental <br /> Health Division(PHS/EHD), dated August 26,;1996. PHS/EHD's letter requested that - <br /> the extent of gasolirie.hydrocarbons"in soil and groundwater be defined downgradient of <br />-' the site,and that remedial feasibility,studies' be evaluated to reduce the level of gasoline <br /> * hydrocarbons in-soil and groundwater at the'site.' The purpose of the proposed work :F <br /> includes: 1)to define the extent of gasoline hydrocarbons offsite.16 the southeast <br /> (downgradient); and 2).initiate`colleetion of data to assess the risk•associated with the <br /> n presence of gasoline;hydrocarbons"at..the site: , <br /> r This work plan includes a brief discussion of site background;previous investigations, <br /> :proposed scope of work, and schedule:`Field and laboratory,procedures are presented as <br /> Attachment A. <br /> SITE BACKGROUND AND PREVIOUS INVESTWATION , <br /> ` The site is the location of an.operating,Chevron Service Station located on the northwest, <br /> a corner of Washington Street and South,Center Street in Stockton,California; and is. <br /> within an area of primarily. commercial use. Topography in the area of the site is <br /> relatively flat.and,the site is approa:imatA 12, feet above mean.sea.level. The nearest <br /> 1.13]5.Sunrise Gold Circle_,Suite•MpRancho Cordova,California 95742 A16) 858=3350 FAX(916)858-2355 <br />