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8.0 IDENTIFIED CONTAMINATION SOURCES <br /> The following sources of past, current, on-site, and off-site contamination have been <br /> identified as a result of this investigation: <br /> Identified Contamination Source Evaluation & Recommendations <br /> 1. The Site was developed for Agricultural chemicals may remain in Site <br /> agriculture in 1937 or earlier. The soils from past uses. The only way to <br /> eastern portion of the Site is determine the presence or absence of <br /> currently an olive orchard. (Current these chemicals is by testing and <br /> and past on-site) analysis. Typically, any such testing is <br /> conducted at the property owner's <br /> discretion. <br /> 2. The surrounding properties are Assuming responsible application of <br /> used for agricultural purposes. agricultural chemicals, no action is <br /> (Current and past off-site) warranted. <br /> 3. An irrigation well, a domestic well, The wells and septic system are currently <br /> and a septic system are located on in use. <br /> the Site. (Current on-site) <br /> 4. One approximately 2,000-gallon Petroleum products and related <br /> above-ground diesel storage tank, chemicals could exist in the on-Site soils. <br /> one unused above-ground storage The only way to determine the presence <br /> tank, three empty drums (previously or absence of these chemicals is by <br /> contained waste oil), and three testing and analysis. Typically, any such <br /> buckets (empty or containing oil) testing is conducted at the property <br /> were observed near the irrigation owner's discretion. Above-ground <br /> well. Litter was being used to storage tanks and hazardous materials <br /> absorb minor oil staining. (Current should be maintained in accordance with <br /> on-site) all applicable laws and regulations. <br /> 5. One pole-mounted transformer was Transformers are of concern because the <br /> observed on the Site. (Current on- oil within them may contain <br /> site) polychlorinated biphenyls (PCBs), which <br /> can contaminate soil in the event of a <br /> leak. The property owner may wish to <br /> contact the utility provider regarding the <br /> PCB content of the transformers and any <br /> recommended action. <br /> LOGE 1220 Page 6 <br />