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8.0 IDENTIFIED CONTAMINATION SOURCES <br /> The following sources of past, current, on-site, and off-site contamination have <br /> been identified as a result of this investigation: <br /> Identified Contamination Source Evaluation <br /> 1. Two septic systems are located on The septic systems are in use. The <br /> the Site. (Current on-site) San Joaquin County Environmental <br /> Health Department regulates septic <br /> systems. <br /> 2. At the house on Alice Avenue, a It is anticipated that these materials <br /> few tires, two plastic buckets, and were only outside temporarily and <br /> four quart-size containers were that they will be placed inside a <br /> stored next to the driveway. In the shed or garage for long-term <br /> backyard of the houses on storage. The San Joaquin County <br /> Stockton Street, a backpack-style Environmental Health Department <br /> sprayer was sitting near the regulates storage of hazardous <br /> greenhouse. (Current on-site) materials. <br /> 3. A total of 12 listed facilities were No evidence has been encountered <br /> identified on regulatory databases to indicate that these 12 facilities <br /> within one-quarter mile of the site. have impacted the Site. The <br /> (Current and past off-site) investigations are closed for three of <br /> the facilities. An additional facility <br /> was tested by a consultant and <br /> found to be of low concern. No <br /> information was available for one <br /> facility. For seven of the facilities, <br /> their distance from the Site, <br /> combined with the types of <br /> databases on which they are listed, <br /> make it unlikely that they would <br /> have impacted the Site. <br /> 4. A natural gas transmission pipeline Natural gas pipelines represent <br /> was identified within one-quarter safety concerns for sensitive land <br /> mile of the Site. The pipeline runs uses. The Pipeline and Hazardous <br /> along the railroad tracks to the east Materials Safety Administration <br /> of the Site; it is an active pipeline provides regulatory oversight for <br /> operated by PG&E. (Current off- natural gas pipelines. <br /> site) <br /> LOGE 1822 9 <br />