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v o A S S O C I A T E S I N C approximately 120 feet bgs to depths ranging from 170 to 200 feet bgs The deep zone occurs from below 170 to 200 feet bgs The established groundwater flow direction is to the south Because the aforementioned MCTC wells are not a source of drinking water and are not considered completed contaminant exposure pathways, they were not included in ATC's well survey data (Table 3, Figure 3) Well logs indicate one well of unknown use is located approximately 1,560 feet downgradient of the project site (Figure 3, Well No 5) Little is known about this well with exception of its completion depth of 100 feet bgs Field reconnaissance revealed this is currently the location of a residence however no evidence of a well was observed Approximately 250 feet further south of the above well Iocation, wells logs identify a site as Kayo Oil' The logs indicate two "remediation" wells are located here (Figure 3, Well No 3) However, field reconnaissance performed by ATC revealed this site currently is a vacant lot An apparent groundwater treatment system manifold was noted on the site however no wells were observed Approximately 2,000 feet south-southeast of the subject site a domestic well was identified in the reviewed well logs (Figure 3, Well No 4) Field reconnaissance reveled this is the location of a •� residence, however no evidence of a well was observed The remaining wells identified within approximately 2,000 feet of the site are located either upgradient or crossgradient from the site at a distance of at least 800 feet Field reconnaissance did not reveal the presence of any of the wells, suggesting that they are no longer in use or may have been destroyed Based on this information, it is ATC's judgment that it is unlikely that these wells have been impacted or is threatened by petroleum hydrocarbons from the site ATC personnel conducted an on-site search for potential receptors on November 3, 2000 No surface water bodies or streams were located within 2,000 feet of the site OTHER ACTIVITIES Two MCTC groundwater monitoring wells, identified as MW-208 and MW-320, are located within 100 feet in the inferred down gradient direction from the site's former UST location Pursuant to PHS/EHD correspondence dated July 20, 2000, ATC has contacted MCTC representatives in order to evaluate whether these MCTc wells can be utilized to define the UST extent of contamination On behalf of SUSD, ATC has contacted MCTC and requested soil boring logs and well construction details associated with wells MW-208 and MW-320 Also, in conjunction with MCTC's semi-annual groundwater monitoring and sampling, wells MW-208 and MW-320 were purged and sampled on October 16, 2000 The groundwater w117292 0001 lreportsl3 qmr 2000 doe 3