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�..� ...r <br /> PHASE H ENVIRONMENTAL ASSESSMENT REPORT <br /> G <br /> PETROLEUM HYDROCARBON CONCENTRAnQN STUDY <br /> 21710 MACARTHUR DRIVE <br />� <br /> TRACY, CALIFORNIA <br /> L INTRODUCTION <br /> This report presents the results of a Phase II environmental assessment for petroleum <br /> hydrocarbon concentration at the former Pure-Gro Facility located on 21710 MacArthur <br /> Drive in Tracy, California. <br /> II. PURPOSE AND SCOPE OF WORK <br /> The purpose of this site assessment is to gather information on petroleum hydrocarbon <br /> concentration levels in the soil and groundwater at designated areas at the site so that <br /> opinions regarding any hydrocarbon impact to the site soils or groundwater can be <br /> formulated. The findings of this baseline study will determine the basis for additional <br /> investigations and remediation if necessary. <br /> Our work consisted of reviewing reports, drilling and sampling four test borings, classifying <br /> subsurface strata, converting one test boring into a groundwater monitoring well, laboratory <br /> testing of selected soil samples and groundwater samples, and preparing this report to <br /> present our findings and conclusions. <br /> Work covered by this report was performed in accordance with the work plan submitted by <br /> Balbi & Chang Associates dated December S, 1990. <br /> M. SUMMARY OF REPORT REVIEW AND FIELD INVES71GAT1OvTQ <br /> A. Site Description and History <br /> The site, at 21710 MacArthur Lane, is located on the northeast corner of MacArthur Drive <br /> and Pescadero Avenue in Tracy, California as shown on the Site Vicinity Map, Plate 1. <br /> PaSe 1 of 7 <br /> we _ . <br />