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Figure 6.4.21(7) Vicinity and Drainage Map <br /> 7, <br /> / <br /> RE <br /> (d) Monitoring System <br /> Section 2.7.4 Monitoring Well System provides detail of the monitoring system, proposed <br /> monitoring locations, sample parameters,frequency ofsampling. <br /> The AMEC OMS Manual (Appendix F), Section 5.0 is the monitoring program for the DGM, <br /> specifically the FTSF. Both groundwater quality and FTSF seepage quantities from the <br /> underdrain system will monitored regularly. The manual includes maps, monitoring frequency <br /> and parameters. Groundwater wells will be installed upgradient and downgradient of the FTSF. <br /> Monitoring will occur quarterly during operations and at least eight quarters post-closure. <br /> Groundwater quality parameters are provided in Table 3 of the OMS Manual.The underdrain <br /> will be equipped with a weir or flume to measure the seepage flow rate. The flow rate and pH <br /> of the contact water pond will be recorded weekly. Seepage water quality will be tested <br /> quarterly and at least eight quarters poot'dooure. Standpipe piezometero will be installed inthe <br /> FTSF. Water level monitoring will reveal if a phreatic surface develops with the FTSF. <br /> (e) Re|emse Response Procedures and °Bmckuo° Measures <br /> Appendix E is the AMEC FTSF Design Report that includes design criteria, secondary containment <br /> or liner system, Sub-Appendix F "Technical Specifications and Construction Quality Assurance for <br /> QuaUtyAoouranceContro|o" andengineerdiagramofortheunderdrainoyotem, otarter <br /> buttresses in Zone 1 and Zone 2 and the contact water pond. <br /> �� <br /> r�� <br /> � <br />