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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 . The Adelbert house on the Site For any current or former structures <br /> may date to pre-1937, and the Oro dating from the 1980s or earlier, the <br /> house may date to 1938. assumption is made that lead- <br /> Structural problems were reported containing materials and/or <br /> at the Adelbert house in 2017. An pesticide residues may be present <br /> additional two structures dating to in and around the structures. <br /> the 2000s have been removed from Underground infrastructure <br /> the Site, and a swimming pool has (including the plastic pipes) also <br /> been filled with soil. Plastic pipes may exist in the vicinity of the former <br /> leading into the ground were structures, and caution should be <br /> observed near one former structure exercised in these areas. The <br /> and the swimming pool. (Current typical standard of care for SSCRs <br /> and past on-site) does not require any further <br /> investigation of current or former <br /> structures. <br /> 2. Several paint cans, an apparently Mr. Morenos indicated that these <br /> empty plastic drum or spray tank, containers are empty and will be <br /> and a small, apparently empty properly disposed (personal <br /> plastic gas can were observed communication, January 10, 2023). <br /> under the shade structure. Two <br /> five-gallon buckets with lids were <br /> observed on the inside of the fence <br /> near the northeast corner of the <br /> Site. (Current on-site) <br /> 3. According to permit records It appears that the two septic <br /> reviewed, two septic systems were systems were properly destroyed. <br /> located on the Site in the past; they No well destruction permits were <br /> were destroyed under permit in identified. It is unclear whether one <br /> 1987 and 1991 when the houses or two wells were originally located <br /> were connected to municipal sewer on the Site. Incomplete permit <br /> service. The permits depict one or records related to well destruction <br /> two wells on the Site, including one are not uncommon. <br /> listed as "previously destroyed." <br /> (Past on-site) <br /> LOGE 2251 13 <br />