Pagosa Springs San Juan/Delores River Div 7 Additional Correspondence

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It has been suggested that the macroinvertebrates and fishery communities in the reach of the river should be monitored for a period of 5-7 years after completion to illustrate effects. Monitoring should include an unaffected control area to illustrate potential changes in the affected environment. Proponents should provide additional funding if the State is required to complete monitoring. HYDROLOGICAL The placement of largely non porous structures in over 50% of the bankfull cross sectional areas could affect the flood stage of the river at each point. If such were to occur liability issues could arise. The project design should address how these changes provide safe conveyance of flows during high water, especially near hardened bank structures (terracing, hot springs pools, etc). The proponents should identify how they have addressed potential changes in river flood stage on adjacent landowners property without diminishing the value/use of their land. Liability indemnification should. be provided to private ownerships. MAINTENANCE Grout is a central part of the stability of the proposed plan. The proponent must provide a reasonable and substantiated estimate for the lifespan of the grout in this application. The proponent must provide assurances as to the stability of the material, suitable inspection protocol to assure the stability, and proper maintenance recommendations for its care. Responsibility for the evaluation, maintenance and repair of the proposed installation (especially on private land) must be addressed by the proponent in writing. The proponent should provide landowners with written agreements stating how these elements of maintenance and liability will be addressed. Although we agree with the proposals attempt to maximize the surface water recreation potential during a very brief period of the year (late spring and summer) it does not appear to provide enhancement for the river channel through other periods of the year. The proponent needs to clearly address the value of the proposed "restoration" to the river channel and its biota during all seasons of the year. COMMENTS: 1. The 404 application form is incorrect with regard to the name of the water body (Clear Creek,), project location (Golden, Co) and directions to the site. A vicinity map showing location of activity site, name of water body, applicable political jurisdictions, roads, north arrow, and scale is required for 404 applications. 2. The applicant does not provide sufficient quantitative description of existing conditions for use in evaluating the project. It is difficult to evaluate the effect of the