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Spill Prevention Control and Counter Measures Plan (SPCC Plan): An SPCC Plan has been <br /> prepared for the Site. This plan documents procedures to be followed in the event of a spill <br /> or release at the Site. Tiller's spill policy is that any spill of oil,gasoline, diesel fuel, lubricant, <br /> or asphaltic cement is to be reported to Tiller's Regulatory and Environmental Coordinator <br /> and cleaned up promptly. Any spills of five gallons or more of petroleum products or any <br /> volume of hazardous materials are reported to the state duty officer as required by <br /> applicable state statutes and regulations (Minn. Stat.299K). <br /> Spill Containment Equipment: Spill cleanup equipment is available on-site during periods of <br /> active operations including equipment to excavate and remove impacted soils in an <br /> expedited fashion, as well as firefighting extinguishers, absorbent pads, spill blocker dikes, <br /> empty barrels, rags and shovels. <br /> 9. Drainage, Erosion Control, Sedimentation, Dust, Access Control and Security: <br /> The Site operates under a MPCA NPDES permit. A Stormwater Pollution Prevention Plan <br /> has been prepared for the Site. Surface water drainage is directed to low areas within the <br /> excavation. Collected surface water infiltrates into the underlying soils and/or evaporates. <br /> Surface water drainage is not directed off Site. Sedimentation may occur in the temporary <br /> ponding areas. These ponds can readily be cleaned out by on-site equipment on an as <br /> needed basis. <br /> Erosion of finished slopes is minimized by backfilling to a minimum slope of 4:1 and seeding <br /> and mulching. Screening berms have been constructed to a minimum of 3:1 slopes and <br /> seeded and mulched. <br /> Dust control has been implemented by hard-surfacing 221st Ave. from the exit to US <br /> Highway 169. Internal haul roads to and from the plant area are hard-surfaced. Conveyors <br /> are used within the Site, minimizing truck traffic on internal haul roads. Perimeter berms <br /> also limit dust movement from the Site. <br /> Locking gates at the Site entrances and exits provide access control. The entire Site is <br /> fenced except for a small portion on the western property line, which is too heavily <br /> vegetated for fencing equipment to access. <br /> 10. Rehabilitation Plan <br /> Reclamation activities at the Site consist of conversion of the excavated area in the <br /> northern portion of the Site to development of additional phases of the Elk River Landfill. In <br /> areas south of the landfill, reclamation will consist of backfilling, grading, and seeding. <br /> Slopes around the perimeter of the mining area (where common mining borders do not <br /> exist) will be established at a maximum slope of 4:1. During active mining the floor of the <br /> Site will remain open to accommodate mining activities, haul roads, stockpile areas, etc. <br /> Final grades will range from 1%to 25%. <br /> Topsoil will be placed on graded areas to be reclaimed. The area shall be seeded within 6 <br /> months of completing the backfilling. Topsoil will come from on-site sources, and be <br /> placed in a layer that is a minimum of 3"thick in accordance with the City ordinance. <br /> Page 17 <br />