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HYDRO27271
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HYDRO27271
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Last modified
8/24/2016 8:46:37 PM
Creation date
11/20/2007 7:48:47 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981017
IBM Index Class Name
Hydrology
Doc Date
11/9/2007
Doc Name
Coal Basin Watershed Non-Point Grant-Final Report
From
DRMS
To
WQCD
Permit Index Doc Type
Correspondence
Media Type
D
Archive
No
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Table 1. 1999 Outslope Seed Mixture <br />S ecies Scientific Name Variety #PLS/ Acre <br />Kentuck Blue rass Poa ratensis Banff 0.25 <br /> <br />Slender Wheatgrass Elymus <br />trachycaulus <br />San Luis <br />4.00 <br />Mountain Brome Bromus maz inatus Bromaz 4.00 <br />Sheep Fescue Festuca ovina Covar 1.50 <br />Hazd Fescue Festuca ovina Durar 1.60 <br />Red Fescue Festuca rubra Pennlawn 1.10 <br />Timothy Phleum ratense Climax 0.25 <br />Tufted <br />Hairgrass Deschampsia <br />caes itosa <br />Peru Creek <br />0.20 <br />Orchard rass Dact lis lomerata Latar 0.50 <br />White Dutch Clover Trifolium repens Ladino 0.50 <br />Cicer Milkvetch Astragalus cicer Monarch 1.00 <br />Blue Flax Linum lewsii A az 1.00 <br />Yarrow Achillea millifolium VNS 0.10 <br />Rocky Mountain <br />Penstemon <br />Penstemon strictus <br />Bandera <br />0.50 <br />TOTAL <br />16.5 # / Ac. PLS <br />In order to help control sediment at the base of three slopes accessible by equipment, <br />sediment traps were constructed. In one instance, this required the excavation of existing, <br />but non-functional, sediment traps. These broad shallow traps were excavated so that <br />runoff from a portion of two mines and the run out from a large avalanche area would pass <br />through a sequence of three traps, allowing water to stand for a short period of time, <br />permitting sediment to drop out of suspension. Locally obtained willow cuttings were <br />planted around the perimeter of these sediment traps in order to further slow water as it <br />exited the traps, and to provide for habitat enhancement. <br />In some azeas, adequate room to construct sediment traps did not exist. At one such <br />location, logs and timber were placed into semi-concentric arrangements along the length <br />of the slope base. This pattern tends to slow water velocities and allows sediment to <br />accumulate, minimizing off-site migration. This approach is a short term sediment control <br />measure, due primarily to the limited detention time afforded by the logs and timber. <br />Intensive shrub and tree planting occurred at this location to provide for a greater degree of <br />long term sediment control. <br />
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