Laserfiche WebLink
1.. <br /> 1.0 INTRODUCTION <br /> As per Cleanup and Abatement Order No. 90-702, issued by the <br /> Regional Water Quality Control Board, Central Valley Region <br /> (CRWQCB) , SUN TECH ENVIRONMENTAL, INC. (SUN TECH) , has <br />' performed Quarterly Monitoring for Mr. Jeff Werner, at the <br /> Geweke Land Development and Marketing (GLDM) property, <br /> located at 16 South Cherokee Lane, Lodi, California. <br />' This Addendum to the Ground Water Sampling Report dated <br /> December 16, 1991, has been prepared by SUN TECH, as required <br /> by the San Joaquin County Public Health Services, <br />' Environmental Health Division (SJEHD) . <br /> This report outlines the results of the groundwater sampling <br /> performed by SUN TECH on December 9, 1991 and the sampling of <br /> Extraction Well 1 (EW-1) , January 24 , 1992, at the above <br /> mentioned site. <br />' 1.1 SITE DESCRIPTION <br /> The subject property located at 16 South Cherokee Lane, Lodi , <br /> California, was once the site of a Gas-N-Save service <br /> station, but is currently the location of the Geweke Car <br /> Capitol, a used car dealership (Figures 1 and 2) . <br /> 1.2 PRKVIOUS WORK <br /> One 1,000 gallon waste oil tank, and two 10 ,000 gallon, and <br /> one 6,000 gallon fuel storage tanks were removed from the <br /> subject property in 1985. <br /> As required by the SJEHD, a Subsurface Site Investigation was <br /> initiated at the subject property in 1985. Kleinfelder and <br /> Associates were retained to perform the investigation, and <br /> four monitoring wells were installed (MW-1, 2, 3 and 4) to <br /> assess the subsurface conditions at the site (Figure 2) . <br /> The results of the investigation indicated that petroleum <br /> hydrocarbons were present in subsurface soils (concentration <br /> up to 214.5 parts per million [ppm] TPH-Gasoline [TPH-G] <br /> 7.67 ppm Benzene, 37.9 ppm Toluene, 29. 9 ppm Ethylbenzene; <br /> and 11 ppm Xylenes) as well as groundwater (concentrations up <br /> to 46. 2 ppm TPH-G, 0.74 ppm Benzene, 0. 624 ppm Toluene, and <br /> 1.75 ppm Xylenes) . <br /> In February , 1986, Brown and Caldwell (BC) , were retained by <br /> GLDM to further define the vertical and lateral extent of <br /> hydrocarbon contamination at the site. Five soil borings <br /> were drilled at this time (GL-1 through GL-5) . Petroleum <br /> hydrocarbons were not detected in GL-1 and GL-4 , however, <br /> low concentrations of hydrocarbon contamination was <br /> STE Project No. 4001 <br /> Page 1 <br />