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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 Most structures on the Site date to Lead- and asbestos-containing materials <br /> 1937 or earlier. It appears that the may be present in the structures on the <br /> structures in the northern building Site. Any remodeling or demolition <br /> cluster may date to 1947. (Current should be conducted in accordance with <br /> and past on-site) local, State, and Federal regulations <br /> regarding these constituents. Lead also <br /> may be present in the soil surrounding <br /> these structures. The ground beneath the <br /> structures may have been treated with <br /> environmentally persistent pesticides. <br /> Debris was often buried on old ranch <br /> properties as well. The property owner <br /> should consider these possibilities before <br /> disturbing soil in the vicinity of the <br /> structures. <br /> 2 It is likely that the ranch house and If the septic systems are not planned for <br /> bunkhouse each have a septic use in the future, they should be <br /> system. (Current and past on-site) destroyed under EHD oversight. <br /> 3 Three water wells are located on the The two operational wells are used <br /> Site. Two of the wells are seasonally as part of the cattle ranching <br /> operational, and the third requires operation. The third well could also be <br /> repair to the pump. (Current and used once the repairs are completed. <br /> past on-site) <br /> 4 It appears that the Site has been Cattle were occasionally buried on old <br /> used for cattle grazing since 1937 or ranch properties. However, there is no <br /> earlier. (Current and past on-site) evidence that this practice took place on <br /> the Site. <br /> 5 One pole-mounted transformer was Transformers are of concern because the <br /> observed on the Site. The oil within them may contain PCBs, which <br /> transformer was not marked with a can contaminate soil in the event of a <br /> sticker indicating it to be free of leak. The property owner may wish to <br /> polychlorinated biphenyls (PCBs). contact the utility provider regarding the <br /> (Current on-site) PCB content of the transformer and any <br /> recommended action. <br /> LOGE 1321 Page 6 <br />