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ENVIRONMENTAL HEALTH DEPARTMENT <br /> pPpl{IN C SAN JOAQUIN COUNTY <br /> Unit Supervisors <br /> Donna K.Heran,R.E.H.S. Carl Berman,R.E.H.S. <br /> Q, 304 East Weber Avenue, Third Floor <br /> Director g <br /> m: < <br /> Mike Huggins,R.E.H.S.,R.D.I. <br /> _ <br /> At Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> • c9.., ...��P , Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> c6R Laurie A.Cotulla,R.E.H.S. Robert McClellon,R.E.H.S. <br /> Prograin Manager Fax: (209) 464-0138 Mark Barcellos,R.E.H.S. <br /> LIAR 13 2002 <br /> KAREN PETRYNA <br /> EQUIVA SERVICES LLC <br /> PO BOX 7869 <br /> BURBANK CA 91510-7869 <br /> RE: Equilon (Shell branded Service Station #204-7524-4) Site Code:1883 <br /> 3011 W. Ben Holt Dr. RO#: 0000486 <br /> Stockton, CA., 95207 <br /> WORK PLAN: "Site Investigation Work Plan -Addendum" <br /> DATED: March 6, 2002 <br /> PREPARED BY Cambria Environmental Technology, Inc. — Joe Neely, R.G. <br /> STATUS: DISAPPROVED <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN IH&S <br /> 25299.37, subd(c)(3)1: <br /> • Install deep monitoring wells (2) screened 77' to 87' bgs. <br /> COMMENTS AND CONDITIONS: <br /> • Addendum does not include requirements included in EHD <br /> correspondence dated February 4, 2002. <br /> • Additional revision/addendum required. <br /> REASONS FOR DISAPPROVAL OF THE WORK PLAN (H&S 25299.37, <br /> subd(c)(3)1: <br /> • Addendum only reiterates original work plan's monitoring well <br /> construction, added one more monitoring well with the same construction <br /> details, and failed to incorporate EHD requirements detailed in February 4, <br /> 2002 correspondence and, <br /> Addendum failed to address other depths of concern by not incorporating <br /> requirement to continue to define vertical extent of MtBE in the saturated <br /> zone and, <br /> Addendum failed to propose method(s) to collect confirmation <br /> groundwater samples at (deeper) depths where MtBE was detected, as <br /> required by EHD and, <br /> Addendum does not include required TPH as Diesel soil and groundwater <br /> sampling plan and laboratory analysis as required by EHD. <br />