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Upon completion of the waste removal, a Cleanup Report ("McDonald Island Cleanup Report" dated .August 24 1994) was prepared by FEA. The Cleanup Report provides a detailed inventory and locations for debris and garbage removed from the site- A copy of the CIeanup Retort was provided to ?&. Doug Wilson of the San Joaquin County public Health Services - EnvironmentaI Health Division (PHS/EHD) and Mr. David trey, San Joaquin County Assistant District Attorney. A copy of the original CCP A-as included in the Cleanup Report. The Cleanup Report summarizes the collection of soil samples at the site during the cleanup. These samples, suspected of containing regulated compounds, were analyzed for volatile and semi-volatile organics, polychlorinated biphenyls (PCBs), organochlorine pesticides, total recoverable hydrocarbons (TRPH), total petroleum hydrocarbons (TPH), metals, volatile aromatics and RCI (reactivity, corrosivity and ignitability). Copies of the laboratory reports and chains-of-custody are included in the Cleanup Report. Suspected contaminated materialswere excavated and disposed of at licensed facilities_After contaminated materials were removed, two water samples were collected from the excavation and analyzed for total petroleum hydrocarbons (TPH multi-range). No hydrocarbons were detected in the composite sample. Copies of the laboratory report and the chain-of-custody were included in the Cleanup Report, 2.4 Regulatory Meeting On August 23, 1994, representatives of ZMI, FFA and GeoAudit inct "'ith Mr. Wilson and Mr. Irey to discuss final closure sampling for the site. Though no sampling guidelines were provided by representatives of the PHS/)AHD or the District Attorney, the meeting concluded with the understanding that some confirming soil and groundw ater samples should be collected. 3.4 SCOPE OF WORK In order to assess if groundwater has been impacted as a result of the dump site, ZMI proposes to drill, install and sample three groundwater monitoring wells at the site- The proposed locations for the wells are illustrated on Figure 2. The proposed locations of the tivelIs were chosen based upon existing data in the Cleanup Report, the well were. placed in the areas that represent the greatest potential risk to groundwater. Although groundwater flow direction is not precisely known at the site, the proposed locations should triangulate the areas that present the greatest risk and provide the best available data to determine if groundwater has been impacted as a result of the former dump site. Each boring will be continuously sampled until groundwater is reached. Selected soil ec a�ew.ecRt ra,a.a br.a oW.W s�.r�a wmr�sn d OOZ-0 956 60c ON A9b' V dO�-U Wds l =V 966 1—V?-5