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Surface and Subsurface Contamination Report 1��rracon 6671 & 7101 E. Highway 12 ■ Lodi, California September 22, 2015 ■ Terracon Project No. NA157033 Should future residents of the site 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. The aboveground storage tanks should be removed if not in use and/or placed above secondary containment to prevent impacts to soil. Because no staining was observed in the vicinity of the transformers, the transformers are not considered an environmental threat to the site 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. 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. As 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. 6.0 LIMITATIONS This report was compiled as a Surface and Subsurface Contamination Report for the site. This report contains information and data provided to Terracon by several sources. Terracon in no l way warrants the accuracy or completeness of the information provided to this investigation by those sources. It should be noted that when an environmental assessment is completed without sample collection and quantitative analysis of soil and groundwater beneath the site, as in this study, no statement of scientific certainty can be made regarding latent subsurface conditions which may be the result of on-site or off-site sources. The findings and conclusions of this report are not scientific certainties, but rather, probabilities based on professional judgment concerning the significance of the data gathered during the course of this investigation. Terracon is not able to represent that the site or adjoining land contains no hazardous waste, oil, underground storage tanks, or other latent condition beyond that detected or observed by Terracon during the /S Surface and Subsurface assessment. The possibility always exists for contaminants to migrate ll through surface water, air, or groundwater. Our office has not been provided with specific criteria for the development of this report other than a request to evaluate the property in question for possible problems related to toxic or hazardous agents, nor have we been directed to address any specific questions concerning the site. Should there be a need to conduct an investigation into a specific question not addressed in this report, contact our office immediately regarding your concerns. Responsive ■ Resourceful ■ Reliable 10