7.1 SR 02-22-2022 - Laserfiche WebLink

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Page 7 d. All incidences that have the potential to adversely affect groundwater, including but not limited to spills, shall be verbally reported to the City within 24 hours. This verbal notification shall be followed up in writing within four (4) working days. e. The appropriate storm water permits (NPDES) shall be obtained by the Operator from MPCA and copied to the City. f. Stockpiles of recycled asphalt must not be placed in surface water and run-off from these stockpiles shall be directed away from surface waters. Further, the size of the stock piles is limited to the amount of material that can be used in one year, but need not necessarily be used in one year and can be stored over winter. g. That the hot -mix asphalt operations take place a minimum of three (3) feet above the water table. Any_deviation to this requirement will require an amendment to this permit. h. The wells located at the site shall be monitored once a year for diesel range organics (DRO). Mining activities shall not take place closer to ground water levels than indicated in the plans submitted without amending this conditional use permit; however, if mining is proposed to occur below the water table in the future, the above referenced wells shall be monitored for DRO prior to excavation activities commencing and after their cessation each year. Further, in the event of a spill, appropriate water tests (as determined by the city) will be taken until the spill is deemed clean by the city. i. Except for minor repairs, maintenance of vehicles and equipment shall take place in the Operator's shop. The Operator shall have an approved hazardous waste license for this facility and properly dispose of all waste. j. A minimum of a two -celled system to recycle water from the wash operation shall be utilized. k. Water usage by mining activities shall not adversely affect adjacent wells. Mitigative measures may include, but are