5.2.-5.4. PCSR 09-13-2011 - Laserfiche WebLink

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_ Leachate Recirculation. Remedies for problems arising from leachate recirculation include, but are not limited to, the cessation of leachate recirculation and reverting back to traditional leachate treatment. Groundwater Quality. ERL will perform on-site water quality testing at the monitoring wells in the manner required by the MPCA permit. ERL will also annually sample the individual private wells identified in the Phase IV Water Quality Monitoring Work Plan as required. The Water Quality Report shall be submitted to the City when it is submitted to the MPCA. Surface Water Quality. ERL will have surface water quality tests performed in conjunction with sampling events when water is present as may be required by the MPCA permit. Phase IV Water Quality Monitoring Work Plan. The Phase IV Water Quality Monitoring Work Plan which describes the sampling frequency, parameters, protocols and reporting frequency for landfill gas, leachate, leachate piezometers, leachate, lysimeter, residential wells, groundwater monitoring wells and surface water will be updated annually to reflect changes in the monitoring systems. Hydrogeolo iq c Reports. The investigation of the hydrological and geophysical characteristics of the site will be continued and any other new information relating to the hydrogeologic impact of the site will be reported to City. Hydrogeologic reports will be updated, amended, and modified as warranted by newly discovered or additional data acquired in the continued hydrogeologic investigation. Gas Collection System. ERL shall conduct active landfill gas collection in accordance with approved plans and shall construct additional phases of the gas system at the time of final cover construction. ERL will annually assess the effectiveness of active gas collection operations as part of their annual report. Stormwater. Stormwater generated from the site will be discharged via a storm sewer system, under the exterior roadway to the north end of the expanded Landfill, then west under the City Trail into a wetland upstream of the Rice Lake wetland complex. The discharge point will be onto property owned by the ERL. Discharge to the wetland west of the site has been designed to minimize impacts by limiting bounce in the wetland, restricting flow rates, and treating Stormwater prior to discharge in accordance with applicable permits. The Stormwater management system will be regularly inspected and maintained to ensure it is functioning properly. City Notifications and Access. ERL will notify City at least two days in advance of liner barrier layer installation or final cover barrier layer installation. ERL will also notify City at least two days in advance of any soil boring or well construction required. ERL will assist City in arranging inspection of the site at any reasonable time City requests. ERL will keep City informed of ongoing construction progress and shall specifically notify City of significant changes encountered in the geological, hydrological, or construction conditions. City may reasonably require work which is covered or otherwise obscured prior to City inspection, to be re-excavated for City inspection. Construction Quality Assurance Reports. A Construction Quality Assurance (CQA) Report will be submitted to the City prior to the placement of waste on newly constructed lined areas. A CQA Report shall also be submitted for landfill areas which receive final cover. Aesthetics. Visual impacts will be minimized through buffers, berms, and trees in accordance with the May 25, 2011 Agreement. As required, a 200-foot buffer zone will be located between the expanded Landfill and the property line. The proposed Landscape/Screening plan for the expanded Landfill is presented in Section 1.2.2 and drawing "Screening Plan." Per the May 25, 2011 Agreement, ERL will plant a variety of species of trees along the proposed perimeter and access roads and southern sedimentation pond. Elk River Landfill SDA Section 4-4 Land Use Application `1~VenCl{