6.2 SR 10-03-2022 - Laserfiche WebLink

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Once the above evaluation is complete and the conclusion is reached that a problem is occurring, the next step is to determine the nature and extent of that problem. This may be done by continuing to monitor the existing monitoring points or by installing additional monitoring points. The information gathered during this period of investigation will be submitted to the MPCA in a report. The result will then be used to complete a feasibility study that will determine the remedial action needed, if any, to correct the problem. Examples of remedial actions which might be selected individually or in combination are: • Continuing the monitoring of groundwater and surface water and, if necessary, expanding the monitoring system. • Repairing the final cover or surface drainage features these have been identified as the cause of the problems. • Repairing the leachate collection system if these have been identified as the cause of the problem. • Installation of a groundwater extraction system and/or groundwater flow barrier. • Installation or modification of landfill gas extraction wells. 4.4 Action Levels Water quality intervention levels have been established for the site, and are discussed in the Annual Reports prepared for the facility. These levels are for use in determining compliance for the facility, based on results from the environmental monitoring system. Note that these action levels are updated by MDH and MPCA periodically and thus may change through the operating life of the facility and the post - closure period. These changes will be noted in the annual reports due each February 1. In the event of action level exceedances, the MPCA will be notified by Landfill staff and a contingency plan of action will be discussed and implemented as necessary. 4.5 Equipment Availability The Landfill maintains several pieces of equipment at the site for operations during the active operating period of the Landfill. On -site equipment could be utilized for emergency actions at the facility. A partial list of available equipment (as of August 2022) is: • One CAT D6 Dozer • Two Kamatsu Dozers • One Hyundai 780 Loader • One Dresser 538 Loader • One CAT Grader • One CAT 740 Ejector Haul Truck • One CAT 973 Track Loader • One CAT Skid Loader • Two CAT 836 Compactors • One CAT 826 Compactor • One CAT Excavator • One Volvo A25G Water Truck MProject Number: 227705133 4.5