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' r <br /> Ap lied Geosystems 4191-E Power Irin Road, Sacramentn,CA 95826 0161 152-2901 <br /> • FPEMONIT 0 COSTA 1.1ES,A SACRAMENTO •HOUSTON <br /> September 21, 1988 <br /> 0921MRAM <br /> AGS 38055-1 <br /> Mr. Michael Ramos <br /> RAMCON, Inc. <br /> 1450 harbor Boulevard <br /> Suite B <br /> West Sacramento, California 95951 <br /> Subject: Executive Summary of Preliminary Report, Evaluation of <br /> Soil and Ground-Water Contamination at Abandoned Lerner" <br /> Service Station, 521 North Cherokee Lane, Lodi, <br /> California. <br /> Mr. Ramos: <br /> `Y This report presents the results of our subsurface investigation <br /> at the above-referenced site. The purpose of the investigation <br /> was to obtain a preliminary definition of the vertical and <br /> horizontal extent of soil and ground-water contamination. The <br /> investigation included drilling four soil borings, installing one <br /> monitoring well, and sub'ect-ively analyzing soil and ground- <br /> water samples. <br /> - On August. 18 and 19, 1988, a geologist from our office was <br /> present at the site to observe drilling of four soil. borings and <br /> installation of one monitoring well, collect sail samples, and <br /> subjectively evaluate soil for the presence of hydrocarbon . <br /> contamination. subjective evidence of soil contamination was <br /> R. 44 present in each boring drilled.- <br /> On August 22, 1988, a geologist from our office was present at <br /> the site to develop the monitoring well and on August 29, 1988, <br /> to purge and sample the monitoring well. Immediately after the <br /> well was purged, a sample from the ground-water surface showed <br /> approximately 0.5-inch of floating product present in the <br /> monitoring well. <br /> Based on these findings, Applied GeoSystems recommends further <br /> subsurfa7e work be conducted at the project: site. Three <br /> _. <br /> additional-_around-water ma.nitoring__wells.__should-_bP_.insta1 led.--in-..--. <br /> the downgradient and lateral directions of .ground-Mater flow to <br /> delineate the extent of soil and ground-water contamination: ' i <br />