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(05) Comprehensive Monitoring Plan. Submit a Comprehensive Monitoring 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. The monitoring plan shall yield adequate information for assessing the effectiveness of the landfill gas control system in decreasing VOC contaminants in the groundwater. The plan shall be submitted by February 1, 1996, and updated annually. The original plan and the annual updates shall be approved by the City. (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) VOC Remediation Feasibility Study. In accordance with MPCA correspondence dated February 14, 1994 regarding the Corrective Action Investigation Report, the Landfill will be allowed a three year timeframe in which to demonstrate the effectiveness of landfill gas extraction system in reducing VOC contaminants in the groundwater. If, as of March 1, 1999, groundwater quality standards are exceeded at the facility's compliance boundary and the concentration of VOCs do not show a decreasing trend, the Landfill shall complete a Focused Feasibility Study. The Focused Feasibility • Study shall be submitted to City staff by June 1, 1999. (08) VOC Remedial Action. If necessary, the selected remedial measure for VOC contaminants identified by the Feasibility Study must be constructed and operational by March 1, 2001, unless good cause can be shown for a delay. (09) 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 in 1995 and 1996 to confirm exceedances and identify trends, the Landfill shall conduct monitoring in 1995 and 1996 and prepare an evaluation report which shall be submitted with the 1996 MPCA Annual Report. (10) 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 by May 1, 1997. (11) 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 • PXB 100862 6.