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Appendix VI <br />MONITORING RESPONSES <br />The information presented below incorporates updated criteria for responding to situations which <br />demonstrate significant changes from previous results. The situations outlined below are those <br />which require further action. <br />a) Underdrains: The 30 -day running average of CNwAD for an underdrain exceeds 1.0 <br />mng/1 and the 30 -day running average pH value for the same underdrain for the same <br />period exceeds 9.0; <br />b) LDS: The 30 -day running average of CNwAD for a LDS exceeds 0.5 mg/1 and the 30- <br />day running average pH value for the same LDS for the same period exceeds 9.0; <br />c) HVSCS: The average of the water level readings in the PSSAs exceeds 80 percent of the <br />total capacity in a sustained manner; <br />d) LVSCS, LDCRS: The transducers in the LVSCS or LDCRS exceed two feet in a <br />sustained manner; <br />e) OLS: The head above the Phase I and II OLS is sustained at greater than two feet on a <br />sustained basis; <br />I CNwAD concentrations must be accompanied by a commensurate level of CNFree. In <br />addition, the CNFree concentration in any sample must exceed 0.2 mg/l. <br />The first response to any of the conditions listed above will be to verify that the measurements <br />are accurate. This may involve re- sampling or revisiting the monitoring location to confirm the <br />initial results. In the event that initial results are confirmed, verbal notice will be provided to the <br />DRMS. Recommendations will be provided to the DRMS regarding further analysis of the <br />situation and, if warranted, appropriate corrective actions. This may include, but not be limited <br />to, providing a written plan to DRMS regarding proposed measures for addressing the situation, <br />changing flow rates to the various portions of the VLF, discontinuing the addition of CN or <br />make -up water, initiating detoxification operations, or other appropriate responses. <br />Cyanide Emergency Response Plan <br />EMS: AGANA/CCV Printed Copies are Uncontrolled <br />G: \EMS \Plans \Emergency Response Plans \Cyanide Emergency Response Plan \CERP.doc <br />- Is - <br />August 17, 201(1 <br />Doc.# E -012 <br />Rev 07 <br />