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1 <br /> SITE CLOSURE EVALUATION REPORT <br /> ULTRAMAR STATION NO. 696 <br /> 2448 WEST KETTLEMAN LANE <br /> LODI, CALIFORNIA <br /> DELTA PROJECT NO. D093-916 <br /> 1.0 INTRODUCTION <br /> tDelta Environmental Consultants,Inc. (Delta),has been authorized by Ultramar Inc. (Ultramar)to review <br /> remedial actions conducted at Ultramar Station No. 696, located at 2448 West Kettleman Lane, Lodi,San <br /> Joaquin County, California, and to evaluate whether these remedial actions have reduced concentrations <br /> of petroleum hydrocarbons in the subsurface to levels which would warrant regulatory closure of this site. <br /> ' This report summarizes work conducted at the site and presents our findings. This report has been <br /> prepared in accordance with Appendix B of the Tri-Regional Board Staff Recommendations for <br /> Preliminary Investigation and Evaluation of Underground Tank Sites dated March 1, 1994, by the <br /> California Regional Water Quality Control Board, Central Valley Region (CRWQCB). <br /> ' 2.0 PRO CT BACKGROUND INF RMATION <br /> ^� <br /> 2.1 Site Demotion <br /> The site is a currently operating retail gasoline station located at the southeast corner of West Kettleman <br /> Lane and Lower Sacramento Road in Lodi, California. The location of the site is shown in Figure 1. <br /> ' The site is paved with asphalt and concrete and is occupied by a cashier office/convenience market, four <br /> gasoline dispenser islands, and a canopy. There are three double-walled underground storage tanks at <br /> ' the site which contain regular unleaded, unleaded plus, and supreme unleaded gasoline. The elevation <br /> of the ground surface at the site is approximately 30 feet above mean sea level and the topography in the <br /> ' vicinity of the site is virtually flat. A map of the site as it currently exists is shown in Figure 2, and a <br /> map of the site prior to remodelling in October 1994 is shown in Figure 3. The site map shown in <br /> ' Figure 3 has been used as the base map for all other figures in this report since all field investigations <br /> were conducted prior to October 1994. <br /> 1 <br /> The area surrounding the site includes large retail stores to the northeast and southeast, and agricultural <br /> ' land to the northwest and southwest. A currently operating retail gasoline station and convenience store <br /> is located directly north of the site across West Kettleman Lane. <br /> RPT134.sJs <br />