Laserfiche WebLink
I" <br /> r� October 13, 1987 <br /> 40 USA Station No. 65, Lodi, California AGS 87050-2 <br /> The Central Valley Regional Water Quality Control Board expressed <br /> i <br /> concern to personnel of USA Petroleum regarding the degree of <br /> hydrocarbon contamination found during the initial investigation. <br /> In response to this concern, USA Petroleum requested that Applied <br /> reoSystems prepare a proposal for further delineation of the <br /> contamination. In our Work. Plan (.AGS 87050-1) , Applied <br /> GeoSystems proposed to drill three boreholes and install three <br /> a ground-water monitoring wells to evaluate the extent of <br /> contamination on site. <br /> We proposed to locate one well along the north side .of the <br /> station property to evaluate potential hydrocarbon contamination <br /> in the downgradient. direction of ground-water flow (as inferred <br /> I� by PBG) from the tanks, one well near the Cashier's Office to <br /> evaluate potential upgradient (and background) contamination, and <br /> one well south of the car wash area to evaluate contamination in <br /> the southwest direction from the product tanks in the event <br /> ground water. flowed in this direction. <br /> USA Petroleum submitted .the Work Plan to the CVRWQ0B for review. <br /> The .CVRWQCB responded to USA Petroleum in a June 17, 1987, letter <br /> stating that-one-well--should be relocated to the northeast carnes <br /> 'of the property; and anothei well :should be relocated to all a <br /> suitable determination of ground-water gradient. This last well , <br />