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1 . 0 INTRODUCTION/PREVIOUS WORK This report is being submitted in anticipation of a request by the San Joaquin Local Health District for a site investigation of potential soil and/or groundwater contamination. The subject property is currently vacant although it has been utilized for agricultural purposes in the past ( Figure 1 ) . On April 4, 1989, crude petroleum soil contamination was noted during a subsurface investigation at the subject property conducted by Geo Resource Consultants, Inc. ( Figure 2 ) . The contamination was discovered in four soil borings at a depth of approximately 15 feet below grade. The Geo Resource boring locations are plotted as well as possible in Figure 2 . The soil boring locations were poorly plotted by Geo Resource Consultants, Inc. . The Geo Resource site map and boring logs for the property are included in Appendix I . Laboratory results for the samples are summarized in Table 1 . The laboratory data sheets are included in Appendix I . Due to the elevated hydrocarbon concentrations in the soil samples, further investigation was warranted. �. � TECHNICAL DATA 2 . 1 Name and address of site, tank owner and contact person: Site Location: APN 235-15-22 400 South Tracy Blvd. Tracy, CA Tank Owner and Contact Person Mr. Eric Sung C & L Tracy Group Partnership 21060 Rainbow Drive Cupertino, CA 95014 (408 ) 997-6056 2 . 2 Map showing site location relative to nearby landmarks: The site location is shown on Figure 1 . 2 . 3 Layout of all underground ( u/g ) tanks and piping systems, properly labeled for content: The subject area is shown in Figure 2. 2 . 4 Table summarizing preliminary soil data: Results of analyses for soil samples collected from the soil borings at a depth of 15 feet are included in Table 1 and Appendix I . 1