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STATr OF CALIFORNIA PETE WILSON, Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— <br /> CENTRAL VALLEY REGION <br /> a <br /> 3443 ROUTIER ROAD, SUITE A + ,,� <br /> SACRAMENTO, CA 95827-3098 <br /> PHONE: (916) 361-5600 <br /> FAX: (916) 361-5686 <br /> 19 March 1991 <br /> MAR 2 2 1L91 <br /> Mr. Paul Verma ENVIRONMIFNTAL HEALTH <br /> City of Tracy PERMIT/SERVICES <br /> 520 Tracy Boulevard <br /> Tracy, CA 95376 <br /> SOIL SAMPLING PLAN FOR CONTAMINATED SOILS AT THE TRACY AIRPORT LAND TREATMENT <br /> FACILITY, SAN JOAQUIN COUNTY (CASE# ) <br /> We have reviewed your Soil Sampling Plan (Plan) dated 13 March 1991 and find <br /> that additional information is required before the City of Tracy (City) can <br /> proceed with the soil sampling. <br /> First, the City should state whether the proposed sampling scheme applies to <br /> each individual cell or to all of the cells. Second, the Plan does not <br /> explicitly state how sampling events are going to occur and how many total <br /> samples will be collected and analyzed. Third, it does not state whether the <br /> samples are grab or composite samples. If the samples are composite, how will <br /> the samples be composited? <br /> Once these issues are addressed, we will consider giving the City the approval <br /> to proceed with the sampling plan. If you have questions, please contact me <br /> at (916) 361-5737. <br /> ROBERT A. EVANS <br /> Area Engineer <br /> RAE <br /> cc: <br /> vmr. Ed Padilla, San Joaquin County Public Health Services, Stockton <br /> Mr. Michael McCluskey, Director of Public Works, Tracy <br /> Mr. John Cummings, SCS Engineers, Dublin <br />