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i <br /> Identified Contamination Source Evaluation & Recommendations <br /> The use of the ponds is unknown. <br /> Because they were located in the area of <br /> Several ponds were present on the a former river, they may have contained <br /> Site from the 1950s or 1960s water from that source. However, it is <br /> 4 through the 1980s or 1990s. possible that they were used for manure <br /> Additional ponds were added in the or other discharge water from the <br /> 1980s; all had been removed by operation on the Site. If this is the case, <br /> 1998. (Past on-site) agricultural chemicals, nitrates, or other <br /> constituents could be present at elevated <br /> levels in the vicinity of the former ponds. <br /> One irrigation well and one It appears that these wells are currently in <br /> 5. domestic well are located on the <br /> Site. (Current on-site) use. <br /> Because equipment fueling likely took <br /> One 550-gallon above-ground fuel Place on the Site in the past, it is possible <br /> tank was observed near the shed. It that some fuels or related constituents <br /> 6. does not appear to be in use at this may have reached Site soils. Any <br /> time_ (Past on-site) investigation into this possibility would <br /> typically be conducted at the property <br /> owner's discretion. <br /> Transformers are of concern because the <br /> Two pole-mounted transformers oil within them may contain PCBs. The <br /> were observed on the Site. Only PCBs can contaminate soil in the event of <br /> 7. one was labeled as free of a leak. Because the transformers appear <br /> polychlorinated biphenyls (PCBs}. undamaged no action is warranted at this <br /> {Current on-site) time, The property owner may contact <br /> the utility provider for further information <br /> on PCB content of transformers if desired. <br /> Agricultural chemical permits <br /> indicate that the Site has been No evidence of violations of the <br /> vineyard since 2005. Several <br /> chemicals have been applied to the application permit was identified. The <br /> 5. site from 2005 through the present, owner should be aware that residues may <br /> including Lorsban 4E, a Restricted remain even when chemicals are applied <br /> Use Product containing chlorpyrifos. as permitted. <br /> (Current and past on-site) <br /> LOGIE1014 III, - - .'..' <br /> Page 9 <br /> l <br />