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1. water water (within structures or be evaluated both as part Site specific II Investigations prospective developers as part of their design plans. To complete the ground water investigation the perched water units, the ~v1PCA staff makes the following recommendations: lateral and vertical extent of me chlorinated solvent ground water plume at Indian Head parcel should be detennined; b) the perched water in the vicinity ofthe glacial aquifer solvent contamination (near MW-2 and MW-5) should be investigated to detetniine the water-bearing units overlying the glacial aquifer are contaminated. 2. The extent and magnitude of the glacial ground water contamination identified in monitoring wells MW-2 and MW-5 as documented in the Supplemental Report should be determined. A field investigation designed to jointly characterize both the perched water 1imtsand the underlying glacial ground water contamination through the use of hydioprofiling would be one strategy that the City or developer may want to consider in completing this investigation. 3. The 1VfPCAstaff considers th:at the above recommendations are consistent with the intent and the requirements for completing an area-wide ground water investigation pursuant to the Agreement. However, please note that the Agreement also lays out a schedule for completing the area-wide investigation in a phased manner with the understanding that.if the terms are met, the MPCA VIC Program will be able to issue a determination of adequacy ofthe ground water investigation for the Site or a portion of the Site for the purposes of satisfying the requirements of g1l5B.175 Subd. 3(b). For the MPCA VIC staff to provide a deterrnination of adequacy the extent and magnitude of ground water teleases will need to determined. In order to issue a No Action Determination for all or a portion ofthe Site, the ground water releases that this determination will apply will need to be demonstrated to be stable or attenuating, and the risks posed by the releases will need to be evaluated and mitigated or approproately managed if necessary. Please note that a No Action Determination for grolmdwater may have requrements beyond that needed for a determination of adeqllacy of investigation. In the event that the City detennines that specific portions of the area-wide ground water investigation or other parcel-specific ground water investigations"will not be completed by the City or that m'eeting the schedule described within the Agreement will pose difficulties please contact the .MPCA project manager. 4. The Supplemental Report states that there are only six wells with the study area with three wells adjacent to the study area and that two wells are used for domestic water supply, one for industrial purposes, five for commercial purposes, and one well is . . inactive'. The two domestic wells, 200064 and 251283, are just beyond the extent ofthe proposed redevelopment area, to the north and south, respectively. Although, based on the Site ground water data, these wells do not appear to be at risk, the MPCA staff recommend that the City determine the current status and use of these wells and verify