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City of Roseville Project No. CMXX-99-0290 June 3, 1999 Page 12 The Minnesota Geological Survey (MGS) maintains a limited database of water well records called the Minnesota County Well Index (MCWI). Not all private water wells are listed in that database. Our review of the MCWI database revealed no documentation of water wells located on the Site. E. Findings and Conclusions We have performed this Phase I ESA of the Site in general conformance with the scope and limitations of ASTM Practice E 1527-97. Any exceptions to, or deletions from, this practice are described in Section A.3. of this report. This assessment has revealed no indications ofrecognized environmental conditions in connection with the Site, with the exception of the following: On-Site conditions: . Two LUST incidents were reported at the Site on November 6, 1989 and April 20, 1993 and closed on August 1, 1990 and July 13, 1993, respectively. . Four fuel-oil USTs were registered and removed from the Site. . An approximate 4-foot by 8-foot vault was identified on the south-central side of the Site. Upon removing a steel plate that covered the entrance to the vault, various materials were discovered including: ash debris containing glass and metal, various florescent light bulbs, metal pipes, furniture, a roll of fibrous material, and a clear-odorless liquid was noted on one side of the vault floor. Braun Intertec recommends that composite samples of the debris within the vault be collected and analyzed for the following: . Asbestos . Polychlorinated biphenyls (PCBs) . Mercury . Lead . Volatile organic compounds (VOCs) Off-Site conditions: Two active leaking underground storage tank (UST) facilities were located within 1/8 mile of the Site. Based on the locations of the Clark Service Station and SuperAmerica LUST facilities in relation to the Site and comments from the Minnesota Pollution Control Agency regarding the