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Rich Products Corporation 19901 S McHenry Avenue,Escalon, California for Eckert Cold Storage Company 757MoffatBlvd,Manteca, California Underground Tank Invesdgadon -Phase I Report ofFFndings I.0 Project Idendficadon WHF, Inc. was retained by Eckert Cold Storage Company, Manteca, California, to explore any possible impact that has occurred as a result of underground storage tanks removed and a spill which occurred at a site to the south adjacent to Rich Products Corporation site in Escalon, California. This investigation is to determine whether or not soil and/or groundwater have been impacted at this site, and to discover both the vertical and lateral migration of any contaminants that may have occurred. 2.0 Site Description and History Rich Products Corporation (Rich's) occupies approximately eleven acres of property identified as 19901 South McHenry Avenue, in the city of Escalon, in San Joaquin County, California (Figure 1). This inactive facility was utilized for the purpose of processing fruits and the cold storage of same. The facility was built in 1986 for cleaning, cutting, grading, packaging and storing various types of perishable (nits. During the normal business season, the entire eleven acre site was utilized by incoming and outgoing trucks, forklifts and personnel until late November of each year. On February 13, 1987, the underground fuel tanks were removed by SEMCO, a licensed environmental contractor. No BTEX contamination was identified during this sampling event, but 12 mg/kg Diesel was found under former UST #4, 3.4 mg/kg of C9-C36 under#2 and Lead values of 6 and 7 mg/kg under former tanks#I and#2, respectively(Figures 6&7). WHF, Inc. (WHF)has been contracted to explore the problem and to report the findings. 3.0 Scope of Work On August 15 & 16, 1995, WHF drilled five (5) soil borings at the former underground storage tank (UST) site(Figure 2). All borings were drilled to 60 feet below ground level (b.g.l.), except boring B-