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ENVIRONMENTAL HEALTH DEPARTMENT <br /> QU.�N SAN JOAQUIN COUNTY <br /> o? r Unit Supervisors <br /> e-ti.-41� Carl Borgman;R.E.H.S. <br /> .,< gonna K.Heran,R.E.H.S. 304 East Weber Avenue, Third Floor <br /> �:.. Director Mike Huggins,R.E.H.S.,R.D.I. } <br /> . .. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> `P• Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. ` <br /> Q<<koFax: (209) 464-0138 <br /> R`' Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. k <br /> Program Manager Mark Barcellos,R.E.H.S. , <br /> KAREN PETRYNA AUG .I 6 2002 <br /> EQUIVA ENTERPRISES LLC <br /> PO BOX 7869 <br /> BURBANK CA 91510-7869 <br /> RE: Shell Service Station Site Code: # 1660 1 <br /> F <br /> 7910 Lower Sacramento Road <br /> Stockton CA 95210 <br /> XVORRK PLAN: Site Investigation Work Plan <br /> DATED: June 17,2002 <br /> PREPARED BY: Cambria Environmental Technology,Inc. <br /> I <br /> APPROVED: [x-with conditions,see below <br /> DISAPPROVED: <br /> ADDENL)LJM NEEDED: <br /> ADEO!IATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H&S 25299.37,subd(c)(3)1: <br /> 1. Installation of two soil borings(B-3&B-4) to investigate the vertical and lateral extent of impacted groundwater <br /> inferred to be perched near the northwestern dispenser island area. The work plan proposes to advance the borings <br /> to 20 feet below surface grade(bsg). <br /> k 2. Soil samples will be collected at five foot intervals. If perched groundwater is encountered,a sample will be collected. <br /> 3. Groundwater and/or soil samples will be analyzed for total petroleum hydrocarbons as gasoline,benzene,toluene, <br /> ethylbenzene,xylenes and fuel oxygenates by appropriate EPA approved laboratory methods. <br /> C LN i�IENT AND CONDITIONS. <br /> 1. In addition to perched groundwater,if present,the proposed soil borings must be advanced to groundwater and <br /> groundwater samples collected and analyzed for the above listed contaminants. Current depth to water at this site is <br /> approximately 33.5 feet bsg. <br /> 2. Soil contamination was documented in B-I at 17 feet and 31 feet bsg. The lateral extent of this contamination must <br /> be defined in both proposed borings,which may require deeper borings. <br /> 3. Laboratory regime must include analysis for 1,2-dichloroethane and ethylene dibromide for all samples analyzed.' <br /> 4. A San Joaquin County well permit application and required$89.00 permit fee must be submitted to SJC/EHD. <br /> 5. Fieldwork must be completed by October 18,2002. A report of fundings must be submitted to SJC/EHD within <br /> 60 days following completion of the fieldwork <br />�E <br /> Lori Duncan,Senior REHS Nuel C.Henderson,Jr.,R.G. <br /> a <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: Marty Hartzell,CVRWQCB <br /> Joe Neely,Cambria <br /> a� <br />