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8.0 IDENTIFIED CONTAMINATION SOURCES <br /> The following sources of past, curre ,on-site, nd off-site contamination have <br /> been identified as a result of this inv stigation: <br /> Identified Contamination Source Evaluation <br /> 1. The Site has been used for As with any agricultural property, <br /> agriculture since 1940 or earlier. agricultural chemical residues may <br /> No agricultural chemical use be present in Site soils from past <br /> reports were identified for the last applications. The San Joaquin <br /> five years. (Past on-site) County Agricultural Commissioner's <br /> office regulates chemical <br /> application. <br /> 2. The house on the Site dates to For any structure dating from the <br /> 1963 or earlier. (Current on-site) 1980s or earlier, the assumption is <br /> made that lead-containing materials, <br /> asbestos-containing materials, <br /> and/or pesticide residues may be <br /> present in and around the structure. <br /> These materials should be <br /> addressed in accordance with all <br /> applicable regulations. <br /> 3. A domestic well, an irrigation well, It appears that the wells and septic <br /> and a septic system are located on system are currently in use. <br /> the Site. (Current on-site) <br /> 4. A 55-gallon drum is located behind No staining was noted near the <br /> the house. The drum is used to drum. <br /> store waste oil from the tenant's <br /> vehicle until it can be transported <br /> off-site for recycling, according to <br /> Mr. Mathfallu. (Current on-site) <br /> 5. Two mattresses were observed No hazardous materials were <br /> near the northern property line. observed near the mattresses. Mr. <br /> (Current on-site) Mathfallu indicated that the <br /> mattresses are located on the <br /> roadway rather than the Site, and <br /> that the County periodically collects <br /> this type of dumped material. <br /> LOGE 1416 8 <br />