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I I I I I I I I I I I I I I I I I I I J. -6- It should be noted that most of the runoff from devel- oped areas will naturally pass through wetlands areas before entering the river, and this offers further mitigation. I. REVEGETATION As stated above, the existing disposal area at the southerly end of the project will be reclaimed and seeded, and all roadway slopes and ditches will be seeded and mulched. Irrigated lawns are prohibited by the water augmentation plan. The applicant proposes to include in the covenants requirements that dis- turbed areas at homesites are to be revegetated with suitable native grass mixtures. COLORADO RIVER WATER QUALITY CONTROL This was an area of concern expressed at Sketch Plan review by the County staff, and is an area of concern to the applicant. Since preservation and improvement of the Colorado River fishery through the property is a key objective of Ouray Ranch development plans, it seems the applicant has good reason to be careful with proposed developments along the river. However, an- other objective of the development plan is to develop a few select homesites drawing directly on the river amenity. That is a key purpose of the Phase 2 project. The County 201 plan recommends against development within 150ft of the 100yr flood limit. There are five proposed homesites within this limit, sites 1, 2, 3, 4a, and Sa; site 3 is marginally within the 150 ft setback. We are proposing for these sites a minimum setback from the river-side property line of 40ft. This limit generally lays at 40ft to 60ft from the 100 yr flood line, 20ft to 40ft from the top of the bank, and 60ft to 80ft from normal rivers' edge. This limit still allows 40ft to 50ft for house construction adja- cent to the limiting wetlands at sites 2 and 4a. As a requirement associated with these sites, the cov- enants will require gravel surfacing of parking and driveway areas, sloping of the driveway and parking areas away from the river, and prohibit parking and driveways within the 40ft setback zone. The gravel surfacing should readily accept water for filtration through the soils below, and to a certain extent trap oil stains. It is felt that runoff from roofs and patios will be relatively clean water and readily accepted into the free-draining soils at these sites, which will reduce direct runoff to the river. We feel the measures listed herein, when combined with the central sewage treatment system and wetlands mea-