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2002-05-09_GENERAL DOCUMENTS - C1996083
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2002-05-09_GENERAL DOCUMENTS - C1996083
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Last modified
5/15/2020 5:17:31 PM
Creation date
11/23/2007 6:51:32 AM
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Template:
DRMS Permit Index
Permit No
C1996083
IBM Index Class Name
General Documents
Doc Date
5/9/2002
Doc Name
Proposed Decision & Findings of Compliance for RN1
Permit Index Doc Type
Findings
Media Type
D
Archive
No
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Hydrology - <br />Detailed information regarding the surface and groundwater hydrology in and adjacent to the <br />Bowie No. 2 Mine permit area is provided within Sections 2_04.5 and 2.04.7 of the permit <br />application document. A brief summary is provided below, and the summary is derived from the <br />information presented in permit application Sections 2.04.5 and 2.04.7. <br />The permit and adjacent areas aze generally bounded by three (3) perennial streams. These <br />streams are Terror Creek, Hubbard Creek and the North Fork of the Gunnison River, and the <br />streams aze located west, east and south of the permit area, respectively. Tributary to the <br />perennial streams are the following intermittent and ephemeral streams: Freeman Gulch, <br />Stephans Draw, A-Gulch, B-Gulch, C-Gulch, D-Gulch, Dove Gulch and Sheep Corral Gulch. <br />The specific locations of these streams are depicted on permit application Map No. 9. <br />The North Fork of the Gunnison River drains an area of approximately 526 squaze miles. The <br />average annual yield of the North Fork of the Gunnison River from October 1993 to September <br />1994 was approximately 330,500 acre-feet. The quantity and quality of this river is influenced <br />significantly by agricultural and municipal uses. Neaz Somerset, Colorado, the water in the North <br />Fork of the Gunnison River is a calcium-bicarbonate type, and total dissolved solids <br />concentrations range from approximately 100 milligrams per liter (mg/1) to approximately 400 <br />mgll. <br />Terror Creek is a perennial stream which drains approximately 29 square miles, and Hubbard <br />Creek is a perennial stream which drains approximately 35 squaze miles. Freeman Gulch is a <br />significant drainage which is tributary to Hubbard Creek. Freeman Gulch exhibited flow during <br />the snowmelt period of Spring 1995, and may be considered an intermittent stream. Stephans <br />Draw is also an intermittent stream, and Stockpond P-1 is located along Stephans Draw. <br />The drainages of A-Gulch, B-Gulch, C-Gulch, D-Gulch, Sheep Corral Gulch and a portion of <br />Dove Gulch probably exhibit ephemeral flow regimes. A portion of Dove Gulch can be <br />considered perennial. <br />There aze twelve (12) stock ponds located in the permit and adjacent azeas. These include Pond <br />P-1, mentioned above, and all of the ponds are manmade. The ponds collect spring season <br />runoff, and any available seep water. <br />Groundwater in the area is located within the alluvial deposits along the North Fork of the <br />Gunnison River and Hubbazd and Terror Creeks, within the steep sloped colluvial deposits found <br />within some of the drainages, in perched water zones located within the lenticular sandstones of <br />the Mesa Verde formation and in the Rollins Sandstone. The Rollins Sandstone is a recognized <br />aquifer in the azea. <br />The groundwater associated with the alluvial deposits of the North Fork of the Gunnison River <br />has been developed for domestic and agricultural uses. The localized groundwater resources <br />associated with the alluvial deposits of Hubbard and Terror Creeks are not significantly <br />developed. The groundwater associated with local colluvial deposits is recharged by snowmelt, <br />13 <br />
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