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k'q KLEINFELDER GC-FID, and benzene, toluene, ethylbenzene, and xylene by EPA Method 8020. The GC- FID method will provide possible identification of the petroleum hydrocarbons (gasoline, diesel, etc.). The remaining samples analyzed from the center and radial HS borings will be submitted for total petroleum hydrocarbons IR by Method 418.1. Selection of samples to be analyzed will be based on previous analytical results, visual observations and organic vapor readings. It is anticipated that two samples per boring will be analyzed for total petroleum hydrocarbons. Samples not analyzed will be retained in refrigerated storage for future reference or analysis. Any water samples collected will be analyzed for TPH by GC- FID and benzene, toluene, ethylbenzene, and xylene by EPA Method 602. 2.2 PESTICIDE CONTAINER DISPOSAL AREA, SOIL ASSESSMENT Sampling Pesticide container disposal area PS-3 is located in the middle of the property. Pesticide containers were dumped in a 12 by 30 foot area. DDT, Diuron, Eptam, and Endosulfans were detected in two samples collected from 0 to 3 inches below the ground surface. The DDT level was below the California Administrative Code (CAC) Title 22 Total Threshold Limit Concentration of 1 mg/kg for designation as a hazardous waste. Endosulfan is listed as a hazardous material in Title 22, but no hazardous waste levels are specified. Diuron and Eptam are not included in Title 22. Although the pesticide concentrations are relatively low and not above specified TTLC values. Kleinfelder recommends additional assessment of the PS-3 area. There is a potential for vertical migration of the pesticides. Kleinfelder will collect two additional surface samples and four samples from a depth of 2 to 2.5 feet below the ground surface. Chemical Analysis The samples will be submitted to a certified analytical laboratory and analyzed for organochlorine pesticides by EPA Method 8080, carbamates by EPA Method 632 and thiocarbamates. 2.3 REPORT PREPARATION Upon completion of the field activities and receipt of the analytical results; Kleinfelder will prepare a report of findings. Kleinfelder will include recommendations for additional work as warranted. Remediation of some of the petroleum hydrocarbon contaminated soil will be necessary. If ground water is not significantly impacted and soil contamination appears to be minimal, the contaminated soil may be excavated, transported, and disposed of at an appropriate class landfill. Kleinfelder will include other possible alternative remediation measures for evaluation. The pesticide concentrations detected are relatively low. Because of the proposed development of the site, additional assessment of the PS-3 is recommended. If the pesticides are not detected in the deeper soil samples. The surface contamination may be treated onsite, transported and disposed of at an appropriate facility, or a risk assessment performed to leave the soil in place. 122-88-1160