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t Unlimited ^1--`-- `- '----' Color <br />~~o ~~~~IIIIIIIIIIIIIIIIIII ~~~~ <br />August 11, 1993 <br />Carl Mount <br />senior Reclamation specialist AUG <br />Colorado Mined Land Reclamation Board 20 1983 <br />1313 Sherman, Room 215 ~'t"sr~„ <br />Denver, CO 80203 ~`'%~~-,,. <br />FAX 832-810b ~'~•=,. <br />:/ <br />Re: Regular 112 Permit Application, Dowe Flats Mine <br />Southdown. Inc. (dba Southwestern Portland Cement Company) <br />Dear Mr. Mount: <br />The St. Vrain Anglers Chapter of Trout Unlimited is a conservation <br />organization concerned with preserving, protecting and enhancing <br />the Coldwater fisheries of the St. Vrain River and its tributaries. <br />Toward that end we endeavor to address the needs of the river in <br />the context of "whole basin" management principles. Thus any <br />activity in the St. Vrain Valley which may affect the St. Vrain <br />River and the ecosystems it defines and supports are of concern to <br />us. <br />Southwestern's proposed Dowe Flats limestone quarry has the <br />potential for significant impact on the St. Vrain River and <br />associated riparian habitats. The nature of those impacts will <br />depend on how reclamation may be implemented. Southwestern has a <br />history of responsible operation and reclamation at its Lyons <br />facility. It is to be hoped that that trend will be continued in <br />any future operations. <br />There are three areas of concern to the St. Vrain Anglers at this <br />time. They are impacts of improved or additional crossings of the <br />St. Vrain River, the proposed storage reservoir, and future land <br />use subsequent to closure of the mining operation. <br />I. St. Vrain River Crossings <br />Degradation of the aquatic and riparian zones of the St. Vrain <br />River tends to increase with distance from its headwaters. We are <br />concerned that any alteration of existing crossings or construction <br />of additional crossings be made in such a manner as to avoid any <br />further negative impacts on the river environment. <br />Where negative impacts are unavoidable, mitigation by habitat <br />improvement should be carefully considered for maximum <br />effectiveness and, where appropriate, to the benefit of areas which <br />may be accessible to the public. <br />S t. V r a i n A n g l e r s P. O. B o x 2 5 5 7 L o n g m o n t, C o l o r a d o 8 0 5 0 2- 2 5 5 7 <br />