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None of the constituents included in the above analyses were detected at concentrations above the reporting limit in either of the two soil samples Copies of the laboratory data sheets and chain-of-custody form are attached. Sam )lin. Event 2. Waste Oil-Water Sump- On urmpOn October 11, 1988, a Kleinfelder field geologist collected (Sample #16964) from the soil below an abandoned waste oil-water separator sump. A representative of SJLHD was present while work was being performed. In addition, a water sample (Sample #16963) was collected from fluid removed from the sump to aid in the disposition of the sump contents. The sample locations are shown on Plate 2. The fluid removed from the sump was containerized in a 55 gallon drum. The soil and water samples were delivered under chain-of-custody procedures to Chemwest. The samples were analyzed for TPH extractable by GC-FID, BTEX by EPA 8020 (sod.) and 602 (water), chlorinated hydrocarbons by EPA 8010 (soil) and 601 (water), PCBs by EPA 8270 (soil) and 608 (water), and cadmium, chromium, lead, and zinc by EPA 6010. Sample #16964 was submitted to the laboratory for 48-hour rush turn-around analysis. The results are presented in Table 1. The water sample was submitted for a regular analytical turn-around and results are expected in approximately two weeks from the date of this report. Laboratory data sheets and chain-of-custody forms for the soul sample are . attached. Conclusions and Recommendations The soil samples collected under the two underground storage tanks do not indicate the presence of hydrocarbons, EDB, or organic lead. No constituents included in the analyses requested by the SJLHD were detected at concentrations above reporting limits. The soil sample collected under the waste oil-water sump does not appear to contain compounds or constituents at concentrations of concern. The measured concentrations of cadmium, chromium, and zinc were reported at levels well below the total threshold limit concentrations for these constituents, as defined by Title 22 of the California Administrative Code Therefore, these samples are considered nonhazardous Kleinfelder recommends a copy of this report be submitted to the San Joaquin Local Health District for their review. The analytical results for the sample of fluid collected from the sump will be sent to you in approximately two weeks. If you have any questions or require our services any further, please do not hesitate to contact us I I i KLEI,NEELDER 9`95 Business Part, Drive Suite C Sacramento C-\ 95827 (9%) 366-1701