Laserfiche WebLink
III IIIIIC. IIIIIIIIIII <br /> STATE OF COLORADO <br /> DIVISION OF MINERALS AND GEOLOGY <br /> DeparTmrnl of Nalu ral Resources <br /> 1 71 4 Sherman A . Room ?I S <br /> Denvur.colo'.1do,90201 <br /> Phone:(iq 7)86G-7567 <br /> FAX:I H111 H t2-8 106 <br /> DEPARTMENT OF <br /> NATURAL <br /> DATE: September 9, 1998 RESOURCES <br /> Roy Romer <br /> TO: Bruce Humphries Goremor <br /> Wall Erickson lames S.Lochhead <br /> y Etecuo D <br /> Michael B.Long <br /> FROM: Ham H. Posey Dlsion ohecl.r <br /> ecmr <br /> 9?ge <br /> RE: Water Analysis Reports, Howardsville Mill, M-84-049 <br /> Baseline surface and ground water quality data for the Howardsville Mill was compiled by <br /> Wally Erickson and sent to this office for review (memo, WHE to HHP 8-3-98). The <br /> purpose of the review is to help establish a "water quality monitoring plan" for the <br /> Howardsville environmental protection plan (in accordance with 2 CCR 407-1 Rule <br /> 6.4.20(12)). In addition, as the operator has asked informally for some relief from <br /> sampling obligations, a secondary purpose is to identify parameters that might be <br /> eliminated from the analytes list in order to lower the expense of sampling. <br /> Considering all the sampling locations, it appears that ground and/or surface water <br /> presently has high concentrations of several metals and low pH, relative to table value <br /> standards for the potential water uses. Potential uses include aquatic life and agriculture for <br /> surface water plus agriculture and drinking water for groundwater. Because a number of <br /> parameters exceed use standards, it is appropriate to establish a record of conditions prior <br /> to any further activity at the site. <br /> Based on the baseline water quality analyses provided, it is recommended that the operator <br /> continue analyzing the following parameters. The operator is free to collect other <br /> information as well, but the following list is recommended as a minimum list that could be <br /> used to establish future compliance or departures from baseline conditions where <br /> parameters currently exceed standards. <br /> Field/lab parameters to retain: <br /> pH conductivity <br /> Metals to retain: <br /> Al Ba B* Cd Cu <br /> Fe Mn Hg Zn <br /> ` (Note: It appears as though there may be a problem with the boron analyses. I would <br /> recommend having the lab do further work to be sure that boron actually does occur at the G I and G2 sites. <br />