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�-.,- � ..r ..-. .,�.,„, ,...-..... ,..,-..,.i„i,�,..r a�..•*.rv++e-.,�,. .........sn.-e--'-mnre,P--..•-.. . -Ar-.^^-....... -, mem-+nnxrr- .-- .--.......h.� e. ,T.,....--- <br /> tsLUSH GEOSCIENCES <br /> I N C O R P O R A T E D <br /> GEOLOGICAL AND ENVIRONMENTAL SERVICES <br /> a, <br /> 9' August 17, 1996 <br /> M 524-001 <br /> i,� Mr William Hunter <br /> Hunter & Associates <br /> 2220 Loma Vista Drive <br /> Sacramento, California 95825 <br /> ' Subject Executive Summary <br /> Marci's Diesel Site, 2969 Loomis Road, Stockton, California <br /> Dear Mr Hunter <br /> Lush Geosciences is pleased to present the attached report describing a subsurface <br /> environmental investigation performed at the Marci's Diesel site The site is located at 2969 <br /> Loomis Road in Stockton, California <br /> The report summarizes previous work performed at this site and describes methods and <br /> procedures used during the drilling of 1 soil boring and the collection of soil and groundwater <br /> samples for laboratory analysis The boring location was selected to provide representative <br /> psamples below the former underground tank site Because the underground tank had been <br /> ' removed, the boring location was based on information provided regarding the former location of <br />€' the tank <br /> CONCLUSIONS <br /> r <br /> Soil samples were collected at five-ft vertical intervals, beginning roughly at the bottom <br /> a� of the former tank excavation, and extending to a depth of 80 ft below grade Laboratory <br /> analysis of the samples detected diesel fuel in all of the samples, generally at high <br /> concentrations Review of historic groundwater data indicate that diesel fuel has been detected in <br />' samples collected from MW 1, located adjacent to the tank excavation, during three of the eleven <br /> sampling events performed since April 1992 <br /> Gasoline was also detected in most of the soil samples at concentrations ranging from <br /> 52 7 to 800 ppm The split samples analyzed by Sparger Technologies indicated the material <br />' detected was not characteristic of typical gasoline This may suggest that gasoline present in the <br /> �► soil may be very weathered or that the compounds detected are representative of the more <br />' 524-041 <br /> 3560 BUSINESS DRIVE, SUITE 120 0 SACRAMENTO, CA 95820 (916) 737-9291 • FAX (916) 737-9298 <br />