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Identified Contamination Source Evaluation 2. The Site has been used for As with any agricultural property, agriculture since 1937 or earlier, agricultural chemical residues may and recently to grow corn, alfalfa, be present in Site soils from dried beans, safflower, and wheat. previous applications. The typical A portion of the Site was used for standard of care for SSCRs does orchard in the 1960s. A variety of not require further investigation of agricultural chemicals have been agricultural use. applied to the Site during the past five years, according to the San Joaquin County Agricultural Commissioner's office. (Current and past on-site) 3. A domestic well is located on the The domestic well is currently in Site. Permit records suggest an use. No visual evidence was out-of-service well may have been observed of the out-of-service well, located south of the house and Mr. Chiu has no knowledge of (possibly in the former water it. tower). (Current and past on-site) 4. A septic system serves the house. The existing septic system is Permit records suggest that a currently in use. No visual evidence second septic system served a was observed of any former septic former mobile home located west system. of the house. Mr. Chiu stated when he bought the Site, a pipe ran from the washing machine in the house into a drain pit approximately 30 inches in diameter and four feet deep that was full of water; he had the pit filled in with dirt. It is also conceivable that the shop with living space may have had a septic system in the past. (Current and past on-site) 5. Metal pipes protruding from the On this property, the pipes appear ground were observed around to have been used as doorstops. several of the structures, including Subsurface evaluation of each pipe both of the large barns and the is beyond the scope of the SSCR western stable. Such pipes can sometimes indicate underground infrastructure. (Current on-site) LOGE 20-16 10