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~.~:.~,~ <br />III IIIIIIIIIIIIIIII <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmenl OI Natural Reso urce~ <br />1313 Sherman SL, Room '_15 <br />Denver, Colorado 80203 <br />Phone: (3071 866-3567 <br />FAX: 13031 83?-A106 <br />DATE: April 8, 1996 <br />TO: Barbara Pavlik <br />FROM: Dan Mathews ~~ <br />RE: Deserado Mine 1995 AHR <br />File No. C-81-018 <br />~'`~ <br />~~~~~ <br />'~" "=" :4e "' DEPARTMENT OF <br />RECEIVED '.~~ NATURAL <br />p ^pQ RESOURCES <br />APE{ ~ O 1996 Roy Romer <br />Governor <br />lames 5 Lo~hhea8 <br />Division of rvuner2ls & Ge0lpgy Execm we Direcmr <br />Michael B. Long <br />- Dir is ion Direc br <br />I have completed the initial review of the above referenced AHR, a <br />copy of which i forwarded to you last week. It appears that <br />required monitoring was conducted, and required analyses were <br />reported in the AHR, with the following exceptions: <br />1. Quarterly surface water monitoring was conducted as required <br />at Sites SW1-1, SW11-1, SW23-1, and SW24-1. Monitoring of Sites <br />SW12-1 and SW11-2 was terminated several years ago, and monitoring <br />of Sites SW6-1, SW31-1, and SW33-1 has been suspended until 1 year <br />prior to mining of Lease 8424 in the northwest corner of the permit <br />area. The following parameters were not reported for the <br />respective monitoring sites, and no explanation was provided: <br />SW1-1 SW11-1 SW23-1 SW24-1 <br />ammonia ammonia ammonia ammonia <br />carbonate copper carbonate carbonate <br />TSS iron TSS copper ~' <br />TVS lead TVS lead <br /> manganese <br />nickel nickel u <br />TSS ~'" <br /> TSS TVS <br /> TVS <br />2. Monitoring data is provided for only one of the two alluvial <br />wells included in the monitoring plan. Data is not reported for <br />RM-i because, as stated on Page 6, "no water has yet been detected <br />in RM-1." <br />3. The mine inflow study specified in the permit is to include <br />"...tables to detail source, quantity, duration and field <br />parameters of all inflows, mine water discharge, and...^ Average <br />