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Identified Contamination Source Evaluation & Recommendations <br /> 5. Railroad tracks run along the western Surface soils near railroad tracks may <br /> property line of the Site. (Current and contain elevated levels of metals, <br /> past off-site) herbicides, and/or pesticides. The only <br /> way to determine the presence or <br /> absence of these chemicals is by testing <br /> and analysis. Typically, any such testing <br /> is conducted at the property owner's <br /> discretion. <br /> 6. Agricultural irrigation infrastructure may Old concrete irrigation pipes may contain <br /> be present on the Site from past farming asbestos. If any such pipes are to be <br /> operations. (Current and past on-site) disturbed, the asbestos content should be <br /> determined, and any material found to <br /> contain asbestos should be dealt with in <br /> accordance with local, State, and Federal <br /> regulations. <br /> 7 One hazardous liquid pipeline was Hazardous liquid pipelines have the <br /> identified along the Railroad tracks potential to leak and contaminate <br /> approximately 250 feet northeast of the surrounding soil. The only way to <br /> Site. The pipeline is in service, operated determine the condition of the nearby soil <br /> by SFPP, and contains "multi-products," and groundwater is through testing and <br /> according to the NPMS. JGdirent off- analysis. Based on the distance from the <br /> site) pipeline to the Site, soil impacts to the <br /> Site are possible but unlikely. <br /> 8. Olin Chlor Alkali, 26700 S. Banta Rd., is Groundwater in the vicinity of the Site <br /> located adjacent to the east of the Site, may contain levels of sodium, chloride, <br /> This GeoTracker case is open with a iron, and total dissolved solids that <br /> status of "verification monitoring" as of exceed the RWQCB's Water Quality <br /> 2010. The groundwater gradient is to Goals. <br /> the northeast, away from the subject <br /> Site. The most recent monitoring report <br /> (Stantec, 2012) indicates that, during the <br /> first quarter of 2012, the main <br /> contaminants of concern, carbon <br /> tetrachloride and chloroform, were not <br /> detected in the monitoring wells closest <br /> to the subject Site. For previous 2011 <br /> sampling events (Stantec, 2012), <br /> detections of sodium, chloride, iron, and <br /> total dissolved solids exceeded the <br /> Water Quality Goals in the monitoring <br /> well closest to the Site. (Current and <br /> past off-site) <br /> LOGE 1303 Page 10 <br />