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LEVINE•FRICKE 1 March 23, 1989 LF 1439 i ENVIRONMENTAL SITE ASSESBMENT i REPORT 1 RIPKIN SITE 1. SAN JOAQUIN COUNTY, CALIFORNIA 1.0 INTRODUCTION This report describes the results of ani environmental assess- ' 1 ment of an approximately 300-acre property !,(assessors parcel num- ber 114-020-02) ("the Site") located in! San,# Joaquin County, Cali- 7 fornia (Figures 1 and 2) . The Site is bordered by the Fourteen- mile Slough to the north, the Ten Mile Slough to the east, 1 the Smith Levee and a private access road to the west, and a I power transmission line easement and drainage ditch to the south. f The Site consists of the northern portion of the land known as the Sargent Barnhart Tract. The Site is planned for combined residential, recreational, and commercial development. �3 kF This assessment was conducted for the Grupe ', Development Company ! of Northern California (Grupe) in accordance with our Work Order No. 1 dated January 10, 1989. Some sources'::" of the background information used in this assessment were obtained during a previ- ous assessment of the approximately 800;1acre property located immediately to the south of this Site (the southern portion of the Sargent Barnhart Tract) , which was performed for Grupe by Levine-Fricke in October through December 1988. This previous environmental assessment included backg round review of the site history and potential contamination sourcesj (including a review of pertinent regulatory records and interviews with regulatory agency officials) , a field reconnaissance inspection, and samp- ling and analysis of soil and ground water for suspected chemi- cals. Results of these previous investigations were presented in two reports to the Grupe Development Company entitled: "Environ- mental Site Assessment Report, Brookside Development Site, San Joaquin County, California, " December 8; 1988 ; and "Report of Supplemental Field Investigations, Grupe Brookside Development Site, San Joaquin County, California, " December 8, 1988. 1 2.0 OBJECTIVE ` ilr The primary objective of the environmental site assessment was to identify Possible environmental concerns at ,the Site - in partic- ular, to assess possible problems relating to chemical applica- tions, leakage, spillage, discharge andldisposal. Such problems could be the result of present or past operating practices at the Site, past land uses prior to the current ownership of the Site, or migration of chemicals onto the Sitellfrom neighboring areas. Given the historical agricultural usageilof the Site, the primary ' -1-