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Identified Contamination Source Evaluation & Recommendations <br /> 9. Sebastiani Vineyards, located at Based on the groundwater flow direction, <br /> 1 , <br /> 3 � <br /> 4614 West Turner Road, adjacent to case status, and analytical data reported <br /> C <br /> Y P <br /> the south of the subject Site, was any impacts to the Site from this facility <br /> listed on GeoTracker as a leaking are anticipated to be minimal 1J <br /> underground storage tank case. <br /> Gasoline had impacted <br /> groundwater, and a treatment <br /> system was used to extract it to <br /> levels below laboratory detection in <br /> monitoring wells. The case was <br /> closed in 2000. The groundwater <br /> flow direction is reportedly to the <br /> southeast, away from the Site. The <br /> facility is currently monitoring <br /> groundwater for constituents related <br /> to its process wastewater discharge <br /> from a second facility 0.65 miles <br /> west of the project Site. <br /> (Current and Past off-site) <br /> 10. EHD data indicates that DBCP was it appears that some ground water in the <br /> detected in two water wells within area has elevated levels of DBCP and <br /> one-half mile of the Sitet nitrate. As required by the EHD, an on- <br /> concentrations of 0.15 and .4 site well will be tested for these \ <br /> ppb; it was not detected in t ee constituents as part of the Soil Suitability J <br /> other wells in the area. Nitrate was Study to follow this report. <br /> detected in five water wells within <br /> one-half mile of the a at <br /> concentrations of 2.9 to 93 ppm, <br /> The Maximum Contami Level <br /> nset by the US EPA for DBCP <br /> O-2 pb; the MCL for Nitrate <br /> urnent and past off-site) <br /> 11. Agricultural irrigation infrastructure Old concrete irrigation pipes may contain <br /> may be present on the Site from asbestos. if any such pipes are to be <br /> past farming operations. A pile of disturbed, the asbestos content should be <br /> broken concrete, including pieces of determined, and any material found to <br /> pipe, was observed to the west of contain asbestos should be dealt with in <br /> the milk barn. (Current and Past accordance with local, State, and Federal <br /> on-site) regulations. <br /> i <br /> DOGE 1111 Page 10 <br />