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ENVIRO ENTAL HEALTH tEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> ? � Donna K. Heran, R.E.H.S. Unit Supervisors <br /> . < Director 304 East Weber Avenue,Third Floor Carl Borgman,R.E.H.S. <br /> Al Olsen, R.E.H.S. Stockton,California 95202-2708 Mike Huggins,R.E.H.S.,R.D.I. <br /> Douglas las W.Wilson,R.E.H.S. <br /> Program Manager Telephone:(209)468-3420 g <br /> z�FOR Margaret Lagorio,R.E.H.S. <br /> Laurie A. Cotulla, R.E.H.S. <br /> Program Manager Fax: (209)464-0138 Robert McClellon, R.E.H.S. <br /> Website:www.sjgov.org/ehd/ Jeff Carruesco,R.E.H.S. <br /> PAUL SUPPLE DEC 2 2 2005 <br /> ATLANTIC RICHFIELD COMPANY <br /> PO BOX 6549 <br /> MORAGA CA 94570 <br /> RE: ARCO Station#595 Site Code: # 0707 <br /> 6100 N.Hwy 99 E.Frontage Road <br /> Stockton CA 95212 <br /> WORKPLAN: Soil Excavation Followng UST Removal APPROVED: [x] <br /> DATED: December 19,2005 DISAPPROVED:[ ] <br /> PREPARED BY: URS Corporation,Inc. <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H&S 25296.10(c)(3)]: <br /> 1.Proposal to over-excavate and remove from the site any soil contaminated with petroleum hydrocarbons,should any <br /> be encountered,during the removal of the entire underground storage tank system(UST). <br /> 2.During the UST removal soil will be field screened with a photoionization detector and by observation. <br /> 3.If overexcavation is performed,confirmation soil samples will be collected from the bottom and sidewalls of the <br /> tank pit excavation area,and from beneath the piping lines and dispenser areas. <br /> 4.Stockpiles of contaminated soil will be placed on and under plastic sheeting. <br /> 5.Stockpiles of contaminated soil will be sampled for profiling and removed to an appropriate disposal facility. <br /> COMMENTS AND CONDITIONS: <br /> 1.Soil samples for analysis must be taken per the conditions of the UST system removal permit,prior to beginning <br /> any overexcavation activities. <br /> 2.If overexcavation of the tank pit area is done,care must be taken to ensure the integrity of MW-1,and to the sites <br /> septic system. <br /> 3.A report of findings must be submitted to SJC/EHD within 60 days following completion of all fieldwork. <br /> 4.Forty-eight hour notification to SJC/EHD is required prior to all site fieldwork. <br /> Lori Duncan,Senior REHS Margaret L rio,SupervisingLS <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: James Barton,CVR\VQCB <br /> Vern Elarth,URS Corporation,Inc. <br />