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• <br /> `T us ARMY CORPS OF ENGINEERS <br /> t.a.∎ RECEIVED <br /> Queen of the River Consultants AUG 16 2005 <br /> 13810 N 115 Street <br /> Longmont, CO 80504 DURANGO REGULATORY()F RU <br /> Ph: 303-651-2514 Fax: 303-651-2224 <br /> August 12, 2005 VIA CERTIFIED MAIL AND EMAIL TO <br /> Kara.a.helliqe@usace.armv.mil <br /> Ms. Kara Hellige <br /> US ARMY CORPS OF ENGINEERS <br /> 278 Sawyer Drive <br /> Suite 1 <br /> Durango, Colorado 81303 <br /> RE: PAGOSA SPRINGS RIVER RESTORATION PROJECT <br /> Dear Ms. Hellige: <br /> I am writing as a consultant for Koinonia, LLC, owner of multiple, contiguous, river <br /> properties along the north bank of the San Juan River. <br /> Our purpose is to express our concerns and comments regarding the San Juan River <br /> restoration project as proposed under the individual application recently submitted by <br /> Recreation Engineering and Planning Inc. for the Town of Pagosa Springs. <br /> After careful review with the owner and other project consultants we believe that the <br /> proposed river restoration project requires further investigation as to the long term <br /> impact on the river and adjacent properties. <br /> CONCERNS: <br /> The proposal recommends use of unnatural grout, a foreign substance to a natural river <br /> corridor. Grout represents biological, hydrological and maintenance concerns. <br /> ➢ BIOLOGICAL <br /> The placement of grout must be quantified for each structure so that some idea of <br /> porosity of the structures can be determined. The loss of porosity and the effect of this <br /> foreign material proposed on the biota of the channel could be significant. The loss of <br /> interstitial spaces in any portion of the river bed could reduce habitat availability for <br /> macroinvertebrates and larval/juvenile fish. The chemical composition of this large <br /> quantity of grout is foreign to the river water quality and its impact should be identified. <br />