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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />B. GEOLOGY <br /> <br />Soil Conservation Service soil maps for Arapahoe County <br />show that, geologically, five soil types are present in <br />the Slaughterhouse Gulch Basin. All five soils are related <br />natural soils and are all loam in nature. These five types <br />are: <br /> <br />1. Asca10n Sandy Loam <br />2. Nunn Loam <br />3. Renohill-Buick Loam <br />4. Buick Loam <br />5. Fondis Silt-Loam <br /> <br />Other soil types may be found in the basin and are generally <br />imported fills and other mixed soils transported into the <br />area during the construction of sub-divisions. The natural <br />soils types were derived from wind and water laid sediments <br />of the Denver and Dawson formations. These soils are fertile <br />but susceptible to wind and water erosion. In most cases <br />this material would be stable on slopes up to 20% with <br />vegetative cover. Any proposed drainage improvement could <br />be designed and implemented with the various soil constraints <br />existing within the channel area. <br /> <br />C. STATUS <br /> <br />Development in the basin is generally about 90% complete. <br />The upper reaches of the basin in Arapahoe County are still <br />experiencing a limited amount of development. Land use <br />types include light industrial, commercial and residential <br />in the lower reaches and residential and commercial in the <br />middle and upper reaches. Commercial uses are generally <br />the shopping center type and the normal commercial develop- <br />ment along major arterials. <br /> <br />As mentioned earlier, with the present degree of develop- <br />ment, the basin has a high potential for flood damage. The <br />channel ability to convey flood flows is very limited and <br />restricted in certain areas. Severe encroachment has <br />been made into the flood conveyance system at numerous <br />places within the basin. <br /> <br />The study reach is totally improved excluding the reach <br />from Windermere to Prince. The area between the railroad <br />tracks and Windermere is tentatively planned for a city <br />park. Between Prince and the tracks, the area is city owned. <br />PUD plans for the area have been proposed and submitted to <br />the City for review. The plan is identified as the <br />Lakeview Knolls PUD and would consist of 296 units on <br />14.5 acres. The implementation of the drainageway plan <br />and the PUD plan must be done concurrently to insure an <br />adequate, dependable and compatible drainage system through <br />this reach. <br /> <br />:p- 3 <br />