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i F! April 21, 2006 NOA Project Number: E06022A f F sampling may be appropriate for constituents of concern based on the sources of contamination identified. Pi If the underground fuel storage tank is not to remain g muse, prudence would dictate that it be appropriately abandoned: Collection of samples from the excavation may be warranted to confirm that Fleakage has not taken place. Should the future residents of the subject property be interested in determining the quality of their drinking water, EHD should be contacted for direction regarding the potential for impacts to groundwater from the agricultural history of the property and vicinity. If the property owner or the EHD are concerned about the potential for elevated levels of metals in the surface soils at the southeast corner of the property as a result of metal debris storage at that location, soil samples may be collected and analyzed. If the above-ground storage tank is to remain in use,modifications should be made to eliminate spillage. All drums and agricultural chemicals should be stored within secondary containment an appropriate distance from water wells. The drums of oil observed should be removed from the property and disposed in accordance with all applicable regulations. Fj The tires stored on the property should be removed and disposed in accordance with all applicable regulations. Because no staining was observed in the vicinity'of the transformers, the transformers are not F1 considered an environmental threat to the subject property at this time. Should the property owners or the EHD be concerned about PCB contamination,PG&E should be contacted to test,retrofit, or replace the transformers. If the existing structures are to be renovated or demolished, a survey to detect lead-based paints and asbestos-containing materials should be conducted prior to any such activities. Any wells or septic systems identified which will not remain in use should be abandoned under EHD oversight. Any additional infrastructure or buried debris that may be encountered during site grading 1 or development should be removed and disposed of in accordance with all applicable regulations. As the site „_dewed, any stained soil or sources of contamination identified, including those describe drin Section 3.3,jshould be characterized and properly disposed in accordance with federal, state, ands ocal regulatio'ns. F 1 ' IS P !