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<br /> <br /> <br />~I <br />1 <br /> <br /> <br />1 <br /> <br />recovery/leak detection system will be monitored weekly. <br />Results will be reported and mitigation employed in accordance <br />with the following schedule. <br />Heao Leach Pads <br />0 to 20 gallons/acre/day (gpad) <br />20 to 100 gpad <br />100 to 300 gpad <br />300 to 500 gpad <br />> 500 gpad <br />' Pregnant and Barren Ponds <br />0 to 20 gpad <br />' 20 to 130 gpad <br />1 130 io 300 gpad <br /> <br /> <br /> <br /> <br />i <br /> <br />300 to 3,000 gpad <br />> 3,000 gpad <br />D.7.5 Leach Pad Stabilitv <br />D.7.5.1 General <br />No response required. <br />Report to MLRD, <br />additional monitoring <br />implemented, pump from <br />sump as required. <br />Locate area of leakage, <br />change pad loading/ <br />spraying to reduce <br />leakage, punp from sump <br />as required. <br />Leakage area shutdown <br />until leaks repaired. <br />Leakage area shutdown <br />replace primary liner. <br />No response required. <br />Report to MLRD, additional <br />monitoring required, pump <br />from sump as. required. <br />Locate areas of leakage <br />and operate ponds to <br />minimize leakage if <br />possible or repair. <br />Repair leaks. <br />Pond shutdown, replace <br />primary liner. <br />The stability of the heap has been evaluated at the most <br />critical cross section for deep-seated slip surfaces as shown <br />D-52 (Revised 4/20/89) <br />