Laserfiche WebLink
<br />Battle Mountain <br />NOPV Abatement <br />page 3 <br />Gold <br />Requirements & Status <br />May Progress: (Continued) <br />- In partial response to Stipulation !tl on R-004, BMG <br />submitted plant and pond cyanide monitori g results <br />and technical discussion of the data to d monstrate <br />reduction in Free Cyanide levels from 184 188 ppm <br />to 32-34 ppm in the ponds, as of May 11, 1992, on <br />May 26, 1992. <br />- In partial response to Stipulation J/1 on ~R-004, <br />BMG submitted a technical revision applic tion <br />proposing an additional Hydrogen Peroxide tailings <br />treatment (TR-007) on May 26, 1992. <br />June Progress: - BMG has continued CYTOX treatment, in accdrdance <br />with TR-004, throughout the month of June.; <br />- Division approved TR-007 on June 12, 1992, with the <br />condition that the Hydrogen Peroxide tailings <br />treatment cease October 15, 1992. <br />- BMG implemented Hydrogen Peroxi~'~ treatment on <br />June 15, 1992. <br />- BMG submitted TR-010, proposing implementation of <br />INCO process (502/Air) treatment of the tailings, <br />on June 16, 1992. The application was copied to al <br />of the parties. The deadline for commentsiis June <br />26, 1992. Statutory deadline is July 16, 992. <br />- Preliminarily, BMG states that the INCO tr atment, <br />which will be operational in October, 19921, will <br />achieve compliance with permit tailings quplity <br />requirements. <br />- The Division intends to forward technical adequacy <br />comments to BMG by July 1, 1992. <br />(5) Leak Detection System Effluent Containment: <br />In the event that fluid is intercepted by the tailings fluid co lection <br />pond liner leak detection system, BMG shall design and implemen an <br />automated system to minimize the development of hydraulic back ressure <br />within the leak detection system. This system is intended to r duce the <br />likelihood of compromising the secondary clay liner by intercep ing and <br />withdrawing leakage. <br />In the event that Cyanide is detected within the leak detection system <br />effluent, BMG shall design and implement a containment system t return <br />all effluent to the tailings impoundment, in order to prevent i~ipact to <br />the environment. <br />Status: BMG submitted a written commitment to comply in a lett~r of <br />April 16, 1992. BMG committed to repair the primary 1 ner if <br />if a leak is detected. No leak has been detected in tlhe <br />secondary clay liner. <br />