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PUBLIC., HEALTH SEkVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION W.: <br /> Karen Furst, M.D., M.P.H., Health Officer, iP <br /> 304 East Weber Avenue,Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> PEGGY MARSHALL <br /> MANTECA UNIFIED SCHOOL DISTRICT . <br /> P O BOX 32 <br /> MANTECA CA 95336 <br /> RE: MANTECA USD GROUNDS SHOP SITE CODE: 508217 <br /> 660 MIKESELL <br /> MANTECA CA 95336 <br /> WORKPLAN:Work Plan Subsurface Soil and Groundwater Investigation <br /> DATED: 07/26/2001 PREPARED BY: M.j.Kloberdanz&Associates <br /> 50 APPROVED(with Conditions See below) <br /> 0 DISAPPROVED <br /> 0 ADDENDUM Submit by.: <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORKPLAN(H&S <br /> 25299.37,subd.(c)(3).): <br /> 1. 5 Geoprobe soil borings in the area and in a'northerlydowngradient direction of the <br /> identified diesel contamination of the former underground storage tank to collect soil(4 per <br /> boring) and groundwater samples for laboratory analyses of diesel and BTEY_ <br /> 2. Perform a 2000-foot receptor well survey. <br /> COMMENTS AND CONDITIONS: <br /> 1. Obtain well permit and submit appropriate�permit fee to PHS/EHI)before commencement <br /> of work. Permits are issued to G57 licensed holders only. <br /> 2. Selection of samples for analyses must include PHS/EHD comments and agreement. <br /> 3. Based on field observation,organic vapor detection data,and cost-effectiveness,be prepared <br /> to advance additional borings or to greater depths in order to define the vertical and <br /> horizontal extent of the contamination. <br /> 4. Schedule work with PHS/EHD before finalizing the work schedule. <br /> 5. Implement the proposed work by September 28,2001. <br /> REASONS FOR DISAPPROVAL OF THE WORKPLAN(H&S 25299.37,subd.(C)(3).): <br /> None if the conditions are met <br /> DATED 2ooi BY <br /> Cc: CRWQCB,Central Valley Region Marty Hartzell <br /> Cc: M.J.Kloberdanz&Associates -Michael Kloberdanz <br /> A Division of San Joaquin County Health Care Services <br />