Laserfiche WebLink
Leachate quantity and quality will be monitored at least quarterly or whenever <br /> groundwater samples are collected. The volume of leachate conveyed and the <br /> depth of the leachate over the liner shall be measured and recorded at least <br /> quarterly. Representative samples of leachate and any fluid recovered in the leak <br /> detection system/vadose zone sumps will be tested for the same chemical <br /> parameters as required by the groundwater monitoring program. Reports will be <br /> filed with the LEA, CIWMB and the RWQCB within 90 days of sampling. <br /> 4.6 LANDFILL GAS MONITORING AND CONTROL SYSTEM MAINTENANCE <br /> Landfill gas extraction system monitoring will include collection system, flare and <br /> extraction well monitoring in accordance with 27 CCR, Sections 20921, 20923, <br /> 20925, 20931, 20932 and 20933. The landfill gas extraction system monitoring <br /> will be conducted monthly throughout the post-closure period, unless <br /> authorization to cease monitoring is granted by the San Joaquin Valley Air <br /> Pollution Control District(SJVAPCD), LEA and CIWMB. Landfill gas monitoring <br /> results will be reported to the SJVAPCD, LEA and CIWMB within 90 days of <br /> sampling. <br /> Perimeter probe monitoring for total organics as methane will be performed <br /> quarterly at the proposed gas monitoring wells. In the event that perimeter <br /> monitoring shows that methane gas is being produced at levels above the LEL or <br /> greater than 5 percent by volume in air, the existing LFGES will be evaluated and <br /> modified if necessary. <br /> During surface integrity testing the gas monitoring well network will be visually <br /> inspected for damage and/or malfunction. In addition, the gas monitoring probes <br /> will be periodically inspected and maintained in accordance with the <br /> manufacturers specifications. If damage or malfunctioning is detected during <br /> visual inspection and/or routine maintenance, the probe and/or well will be <br /> immediately repaired. These procedures will assure proper functioning of the <br /> landfill gas well network through the post-closure maintenance period. <br /> 4.7 GROUNDWATER MONITORING AND CONTROL SYSTEM MAINTENANCE <br /> Groundwater monitoring will be conducted on a quarterly basis for parameters as <br /> required by the regulations in force at the time of closure. <br /> Forward Landfill PCPCMP 4-3 <br /> L:\Allied\2000.193\Reports\FinaiPCPCMP:FL-sec4.doc:5/21/02 ®RYAN A.STIRRAT a ASSOCIATES <br />