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I in KLEINFELDER The soil samples were transported under chain-of-custody control to Kleinfelder's office and then transported by courier in a chilled container to Alpha Analytical Laboratory, Inc. (Alpha) of Sparks, Nevada. The chain-of-custody form was signed by each individual who handled the samples, including the sampler and the receiving employee at Alpha Analytical. Alpha is certified by the State of California to perform the analyses requested. The samples were analyzed on an accelerated turnaround schedule for completion. ANALYTICAL RESULTS A total of three soil samples, one from within the excavation bottom and two stockpile soil samples were submitted for analysis for the following fuel constituents: • Total Purgeable Petroleum Hydrocarbons (Gasoline Range) [TPH-G] by EPA Method 8015B/DHS LUFT • Benzene, toluene, ethylbenzene,xylenes [BTEX]by EPA Method 8260B • Total Extractable Petroleum Hydrocarbons as referenced to Diesel [TPH-D] by EPA Method 8015B/DHS LUFT • Total Lead by EPA Methods • Five Oxygenates (MTBE,TBA,DIPE, ETBE, and TAME)by EPA Method 8260B The one discrete sample taken from beneath the UST was also anlayzed for: • Soluble Lead using Distilled Water Extraction by California Title XXII Methods A summary of the results is illustrated in the attached Table 1. Total lead was detected at 70 mg/kg in the sample collected beneath the UST, all other requested analyses/analytes were not detected at or above laboratory reporting limits for this soil sample. Soluble Lead was not detected above reporting limits (<0.01 mg/1) from the sample collected from beneath the tank. Relatively low to trace concentrations of TPH-G, TPH-D and BTEX constituents were detected in the two discrete soil samples collected from the excavated and stockpiled soil. No oxygenates were detected in the three soil samples submitted for analyses. Copies of the chain-of-custody form and analytical results are included in Attachment B. CONCLUSIONS AND RECOMMENDATIONS The following conclusions and recommendations are based upon analytical results, observations and Kleinfelder's findings. The analytical results were compared to the California Code of Regulations 22CCR§66261.24 and/or the Residential U.S. EPA Region IX Preliminary Remediation Goals (PRGs), dated November 1, 2000. In summary: 20-0232-01/2011 R1514 - Page 3 of 0 2001,Kleinfelder,Inc. December 6,2001