REP19334 - Laserfiche WebLink

Home Browse Search

III IIIIIIIIIIIIIIII 999 STATE OF COLORADO DIVISION OF MINERALS AND GEOLOGY Depanmenl of Natural Resources 1313 Sherman 8t., Room 215 Denver, Colorado 80203 Ih~~~ Phone: (103) 8fi6-J 567 I FAX (3011 8J2 8106 DEPARTMENT OF NATURAL RESOURCES To: Dan Mathews n Roy Romer n ( ~ _ Governor ' ^~J 1 J Y From: Barbara Pavlik lames S Lochhead Exec Wive DireUOr Michael B. Lung D8te: AUgU9t 19~ 1996 Division Direuor Re: Annual Hydrology Report Roadside Mine (C-81-041) I have reviewed the above referenced AHR, compared it with the Probable Hydrologic Consequences of the permit application package. My comments are as follows: 1) The Roadside Mine continues to discharge large amounts of dissolved solids into the Colorado River, although a decreasing trend was noted. 2) Page 2, 2nd Paragraph indicates that the 0.000's shown on data pages indicate times when the flow was below the minimum recording level of the recorder (surface water flow). Please have the operator indicate what the minimum recording level of the recorder is. 3) Page 4, Paragraph 3 indicates that certain wells showed an increase in water level of 3 to 9. Please have the operator indicate what units this refers to (feet? inches? miles?). 4) Page 4, Paragraph 3 indicates that the small size of the piezometers make some of the water levels difficult to measure; therefore, some of the water level data are not available. The sole purpose of a piezometer is to measure water levels. If the construction of the well is preventing the operator from measuring water levels, then, obviously, the piezometer(s) is not doing its job, and the operator should replace it (them) with a piezometer of sufficient diameter. 5) The PHC in the permit application package predicted little or no impacts on surface water quantity or dams, reservoirs, springs or the water pipeline in Rapid Creek Basin. They also predicted no impact to groundwater from the North Portal, negligible water quality impacts to the