Laserfiche WebLink
<br />= ? f MINED .LAND RECLAMATION DIVISION <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, CO 80203 <br />303 866-3567 <br />FAX: 303 832-8106 <br />April 24, 1990 <br />tt9 <br />1 <br />Mr.. Jeffrey W. Todd <br />AMAX Mineral Resources <br />1626 Cole Blvd. <br />Golden, Colorado 80401 <br />STA E OF COLORADO <br />-? 7, <br />Company t/? <br />RE: Sluuddg Application Proposal, Climax Mine, File No. M-77-493 <br />Dear Mr. <br />r ? • <br />s?r <br />* 1876 s <br />Roy Romer, <br />Governor <br />Fred R. Banta, <br />Division Director <br />I reviewed the proposal for land application of sewage sludge at the Climax <br />Mine prepared by Black & Veatch we received on April 6, 1990. The proposal is <br />to transport thickened sludge from the Snake River Wastewater Treatment Plant <br />25 miles to the Mayflower tailings disposal area at the Climax Mine. Sludge <br />at a rate of 25 dry tons per acre would be applied and mechanically <br />incorporated-into the 12-18" thick plant growth media layer covering the <br />tailings prior to seeding with the approved Climax seed mixture. This would <br />allow seven (7) acres per year to be amended at the current year round <br />production from the wastewater treatment plant. Thereafter, up to 3 tons/acre <br />are proposed for annual application to areas previously treated. <br />The Division considers there to be a number of advantages to this proposal. <br />The likelihood of successful revegetation of the Mayflower tailings area is <br />the primary benefit, however, attendant benefits to air quality and <br />stabilization of the site are also noted. The water quality considerations <br />appear to be of primary concern. We will defer to the Water Quality Control <br />Division in this regard although it appears limited water quality impacts may <br />result from the plan as proposed. <br />If the proposal is pursued, I would like to offer the following three (3) <br />comments at this time: <br />1. A technical revision (TR) process will be required to change the <br />presently approved reclamation plan, <br />2. Although an annual maintenance application of 3 tons/acre may be allowed <br />without negative effect, the Division would prefer you concentrate <br />efforts on applying sludge to new areas only to make best use of the <br />limited amount of sludge available, and