6.3. SR 09-20-2004 - Laserfiche WebLink

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~ A letter dated, August 10, 2004 from the city's Environmental Consultant, Matt Ledvina, regarding Groundwater Monitoring Plan, the proposed Environmental Spill Plan and Storm Water Pollution Prevention Plan (SWPPP); ~ a contour map showing the existing condition of the site and a wetland mitigation and impact map showing the proposed restoration of the site. Issues: Traffic - The gravel mined from the site is proposed to be sold to Schuer, Inc., who is mining an adjacent site. Schuer, Ine. delivers their product to Elk River Bituminous via easements across private property owned by Aggregate Industries. Peat will be hauled to 225'h Ave. via an easement across property owned by Mr. Ernest Toth. An existing drive for a Bauerly Bros. mining operation will be used to access 225'" Avenue and then the product will proceed west to Highway 169. The majority of the peat will be used as topsoil at the Elk River Landfill. This is an acceptable haul route for gravel also. J & B's easement rights across the Toth property are required to be renewed yearly. In the event the haul routes described cease to be available, the attached CUP (Section 10) requires new routes to be approved through the CUP process. The CUP also requires the easement through the Toth property be in place prior to the operation commencing. Groundwater - Mining into the groundwater raises additional concerns. Matt Ledvina, City Environmental Consultant, addresses these concerns in his attached letter. Environmental Spill Plan The petitioner's Environmental Spill Plan will be revised to address Mr. Ledvina's issues, e.g. identifying refueling locations. Ground Water Monitorin" Plan The Ground Water Monitoring Plan will be revised to include monitoring for pH, temperature and conductivity as well as Diesel Range Organics. Staff does disagree with Mr. Ledvina regarding monitoring all three wells at the site, however. Staff recommends that only the down gradient well located in the northeast corner on the site be monitored (MWl). Incidents of contamination will be known. Section 17 of the attached CUP has a condition that allows additional wells and additional testing events, if needed. National Pollutant Discharge Elimination System (NPDES) The petitioner has applied to Minnesota Pollution Control Agency for a NPDES permit for the operation. Mr. Ledvina's comments regarding rip rap and a vegetative buffer at the outlet of the ditch on the property will be included as part of the Storm Water Pollution Prevention Plan (SWPPP) required by the city in Section 17 of the attached CUP. Wetlands - The City Council is the Local Unit of Government charged with the final decision regarding the Wetland Conservation Act (WCA). The WCA is a separate agenda item for this meeting.