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' samples collected in May, the highest concentration of hydrocarbons in samples collected <br /> in August were detected in MW-2, near the northern property line According to the <br /> calculated flow direction (see Figure 3), MW-2 is currently down-gradient of the former <br /> UST locations However, MW-2 was up-gradient during the previous monitoring event <br /> 1 <br /> Representatives of RFS have reviewed UST information concerning the Jimco Truck Stop <br /> ' site Information obtained from the PHS/EHD indicates that four underground storage tanks <br /> are located on the Jimco site: one 7,500-gallon unleaded gasoline tank, one 10,000-gallon <br /> unleaded gasoline tank, one 12,000-gallon diesel tank, and one 550-gallon waste oil tank An <br /> ' oil-water separator is also present on the property The tanks are owned and operated by <br /> Olympian Oil Co <br /> According to RFS, no information regarding a possible previous site assessment for the <br /> UST's at the Jimco site was found in the PHS/EHD files However, a PHS/EHD inspection <br /> report dated May 28, 1994, states that pump dispensers were observed to be leaking fuel <br /> ' The dispensers were repaired, but no soil or groundwater testing was performed Other <br /> information in the PHS/EHD files indicate that hydrocarbons were observed in a stormwater <br /> ' retention pond on the property <br /> Based upon the information obtained from the PHS/EHD files and results of groundwater <br /> monitoring at the site, it is conceivable that petroleum hydrocarbons released from <br /> ' dispensers or UST's on the Jimco property have the potential to impact soil and <br /> groundwater on the RFS site Further assessment or remediation activities for RFS should <br /> be coordinated with similar activities on the Jimco property <br /> t6.0 LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily <br /> ' exercised by environmental consultants practicing in this or similar localities The findings <br /> were based upon analytical results provided by an independent laboratory Evaluations of <br /> the geologic/hydrogeologic conditions at the site for the purpose of this investigation are <br /> ' made from a limited number of available data points (i a monitoring wells) and subsurface <br /> conditions may vary away from these data points No other warranty, expressed or implied, <br /> is made as to the professional recommendations contained in this report <br /> I ' <br />� t <br /> C-1. I Ad.5.� N. O <br /> Wpoe lire S--QR7R,4AR5 5 O <br /> 1 <br />