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San Juan River/Delores Division 7 Durango RICD 06CW09 Report on Design, Functionality
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San Juan River/Delores Division 7 Durango RICD 06CW09 Report on Design, Functionality
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Last modified
2/6/2015 3:48:31 PM
Creation date
11/10/2014 10:06:35 AM
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Template:
Water Supply Protection
File Number
06CW09
Description
Report on the Design, Functionality, and Physical Characteristics of the Durango Boating Park as it Relates to the RICD Application
State
CO
Basin
San Juan/Dolores
Water Division
7
Date
2/15/2006
Author
Recreation Engineering and Planning 485 Arapahoe Ave Boulder, CO 80302 Gary M. Lacy, P.E.
Title
Report on the Design, Functionality, and Physical Characteristics of the Durango Boating Park as it Relates to the RICD Application
Water Supply Pro - Doc Type
Report/Study
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Figure 6. Construction and grouting are done behind coffer dams in a dry environment so <br />that toxins and excess sediment are not released to the stream flow. <br />Concern has also been expressed over the use of grout in the river. Past improvements at <br />the Durango Boating Park have revealed that the stability of individual rocks of almost any <br />usable size is not possible. This conclusion is supported by calculations and past experience <br />in similar rivers. The use of grout in rivers, though controversial, can be done responsibly. <br />Recreation Engineering and Planning is the nation's leader in the responsible usage of grout <br />in- stream and has pioneered technologies that allow the grout to remain hidden, allow for <br />interstitial spaces for macro - invertebrates, allow for fish migration upstream and <br />downstream, and provide for the overall stability of the structure, thereby virtually <br />eliminating regular in- stream maintenance requirements. The construction methods used for <br />this grout represent current best practice standards and are done in a dry environment such <br />that no toxins are released to the stream flow and there is no effect, long or short term, on <br />the habitat outside of the park. Short term effects in the selected reach are limited to <br />construction impacts and the structures represent a net positive improvement to the <br />environment at the conclusion of the project. <br />Riparian restoration is an important component of the proposed project. Preservation and <br />restoration of riparian corridors provides increased aquatic and terrestrial habitat for species <br />that are dependent on the river's ecosystem. This project seeks to restore degraded riparian <br />corridor throughout the city by planting vegetation, preserving endangered and native <br />vegetative populations, and removing non - native species such as tamarisk and Russian olive. <br />22 <br />
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