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I 4 L January 5,2006 NOA Project Number: E05167A Lindicate that the chemicals were applied inappropriately. If water wells are not properly operated and maintained, they can serve as contamination conduits to L groundwater. Septic systems may be used for inappropriate disposal of hazardous substances. There is no evidence to suggest that wells or septic systems may be contaminant pathways on the subject property or vicinity. L 5.0 CONCLUSIONS AND RECOMMENDATIONS L Given the historical uses of agricultural chemicals on the subject property, meaningful conclusions regarding the presence or extent of such material cannot be determined without soil sampling and analysis. Such sampling and analysis is especially warranted in the conversion of agricultural land into L residential use. This proposed parcel division does not indicate new residential structures and farming activities are to continue, therefore, no sampling is recommended at this time. Should the future residents of the subject property be interested in determining the quality of their 1. drinking water, EHD should be contacted for direction regarding the potential for impacts to groundwater from the agricultural history of the property and vicinity. L Because no staining was observed in the vicinity of the transformer, the transformer is not considered an environmental threat to the subject property at this time. Should the property owners or the EHD be concerned about PCB contamination from the transformer, PG&E should be contacted to test, retrofit, or replace the transformer. L 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 or development should be removed and disposed of in accordance with all applicable regulations. LAs the site is developed,any stained soil or sources of contamination identified should be characterized and properly disposed in accordance with federal, state, and local regulations. L 6.0 LIMITATIONS This report was compiled as a Surface and Subsurface Contamination Report for the subject property. This report contains information and data provided to NOA by several sources. NOA in no way L warrants the accuracy or completeness of the information provided to this investigation by those sources. LIt should be noted that when an environmental assessment is completed without sample collection and 10 L L