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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> ORDER NO. 90-702 <br /> CLEANUP AND ABATEMENT ORDER <br /> FOR <br /> GEWEKE LAND DEVELOPMENT & MARKETING <br /> SAN JOAQUIN COUNTY <br /> The California Regional Water Quality Control Board, Central Valley Region, <br /> (hereinafter Board) finds that: <br /> 1 . The property at 16 South Cherokee Lane in Lodi is owned by Geweke Land <br /> Development & Marketing, a general partnership. The partners, <br /> hereinafter referred to as the Dischargers, are Larry Geweke, Daryl <br /> Geweke, and Mark Geweke. This site was formerly operated as a gasoline <br /> service station. The site location is shown on attachment "A" which is <br /> made a part of this order. <br /> 2. In September 1985 one ground water monitoring well (MW-1) was installed <br /> and petroleum hydrocarbons were detected in soil and ground water at the <br /> site. <br /> 3. Three additional ground water monitoring wells (MWs 2, 3 and 4) were <br /> installed at the site during October 1985. This investigation confirmed <br /> that petroleum hydrocarbons were present in ground water beneath the <br /> former pump island and downgradient from the former tank area. Total <br /> petroleum hydrocarbon concentrations ranged from below detection limits, <br /> in the upgradient well , to 46,200 parts per billion, in the well <br /> adjacent to the former pump island. <br /> �. On 9 July 1986 an additional upgradient monitoring well (MW-5) was <br /> installed. Hydrocarbons were also detected in this well , but at lower <br /> levels than in the downgradient wells. The monitoring well locations <br /> are shown on attachment "B" which is made a part of this order. No <br /> further site investigation has been conducted by the Dischargers. <br /> 5. During 1987 the site was renovated and converted into an automobile <br /> dealership parking lot. <br /> 6. On 20 November 1989 the Regional Board staff notified the Dischargers <br /> that the investigation was incomplete, and requested that the <br /> Dischargers submit a work plan for defining the full extent of ground <br /> water pollution resulting from discharges at the site. <br /> 7. On 25 January 1989 the Dischargers submitted a work plan which included <br /> installation of one off-site ground water monitoring well and three on- <br /> site soil borings. The number of wells proposed is not adequate to <br /> define the extent of ground water contamination. <br />