5.1. PCSR 02-10-2009 - Laserfiche WebLink

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(04) Gas Venting System. Permittee shall conduct active landfill gas venting in accordance with approved plans and shall construct additional phases of the venting system at the time of final cover construction. (OS) Phase IV Water Ouality 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 shall be updated annually to reflect changes in the monitoring systems. The monitoring plan shall yield adequate information for assessing the effectiveness of the landfill gas control system in decreasing VOC contaminants in the groundwater. (06) Annual Gas Vent System Assessment. Annually assess the effectiveness of active landfill gas venting operations based on the results of groundwater and landfill gas monitoring. Incorporate the evaluation in the MPCA Annual Report for the landfill. (07) Heavy Metal Contaminant Monitoring and Assessment. Heavy metal contaminants for surface water and groundwater must be addressed in addition to VOC contaminants. Based on the need for additional monitoring to confirm exceedances and identify trends, the Landfill shall continue monitoring and prepare evaluation reports which shall be submitted with the MPCA Annual Reports. (08) Heavy Metal Contamination Feasibility Study If heavy metal concentrations in groundwater and surface water exceed regulatory standards, the Landfill will be required to conduct a Feasibility Study and submit it to City staff on schedule determined by City staff. (09) Construction Quality Assurance Reports. A Construction Quality Assurance (CQA) Report shall 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. The report shall demonstrate that the work is completed to the plan specifications. The Report shall be certified by an engineer registered in the State of Minnesota and shall include but not be limited to: (a) All relevant construction specifications; (b) All shop drawings for prefabricated components; (c) Photo documentation of all critical aspects of construction; (d) Deflection testing results for leachate collection and transmission pipes; (e) Narrative description of all as-built variances from the plans and/or specifications; (f) As-built cross-sections of the liner sub grade; (g) As-built elevations for all pipe inlets and outlets and pump-on/pump-off controls; (h) Completed manufacturer warranties; (i) All physical testing results for soils and other materials used for construction. C:\Documents and Settings\jvassar\Local Settings\Temporary Internet Files\OLK7B\LANDCUP.DOC Page 6