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PERMFILE138875
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PERMFILE138875
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Entry Properties
Last modified
8/24/2016 10:39:35 PM
Creation date
11/26/2007 8:08:48 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Permit File
Doc Date
3/4/2002
Doc Name
EA for Gob Vent Boreholes for East Side of Panel 15
Section_Exhibit Name
Exhibit 80 Drilling Activities - TR94
Media Type
D
Archive
No
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<br />which distrabs the :;oil. Tlie soil is selectively stockpiled for use in reclamation. Drill <br />pads and roads are designed to minimize erosiar and prevent soil loss. <br />Alternative 2 : Under this alternative [he 5 proposed drill pads would dish~rb about 2.5 <br />acres of soil. The soil would be stripped off each location, and stockpiled for use in <br />reclamation. Some soil loss may occur from direct precipitation events, but current <br />practices ]rave not indicated that substantial amounts of soil would be lost. <br />MCC has mapped known landslides in their permit area, none have been identified in the <br />project area. There is some risk for causing minor slumping during construction <br />activities, but these occurrences aze expected to be minor and mitigatable in the field. <br />Reopening the 1.5 miles of abandoned drill road would also disturb soils that had been <br />replaced and reclaimed. The soil from the abandoned road bed would be disturbed in <br />place, amounting to about 2.5 acres of disturbance. General road building practices <br />invc•lve providing adequate drainage structures so that excessive erosion does not occur <br />and lose the soil resource. <br />Constructing the about one mile of new temporary road would disturb about 1.7 acres of <br />soil. Some soil loss; may occur during construction. However, it will be necessary to <br />preserve the soil for reclamation purposes. <br />Aca:ss to the area will also need to use FR 711. This road would require spot <br />stabilization in about 10 locations. Maintenance work on this road nay also create some <br />soil disturbance, however losses are expected to be minimal. Drainage structures on the <br />road will minimize the loss from overland runoff. <br />Disturbance along roads may increase sedimentation in the drainages. Under this <br />alternative, it is assumed that the one mile of new temporary access road would be placed <br />in the bottom of Long Draw. This disturbance could cause additional sediment to be <br />carried in Long Draw during storm events until the azea was reclaimed. This <br />sedi;nentation could affect vegetation in the area. Most of the project area has adequate <br />vegetation to buffer and filter small inputs of sediment. <br />Alternative 3: Under this alternative, the potential for soil disturbance and sedimentation <br />along FR 711 and the 1.5 miles of reopened drill road would not occur. <br />The new temporary access road would originate from the West Flatiron drill road into <br />Lon; Draw, and then run along the north hillslope of the draw. A small slump has been <br />identified on the sa~9dle, but it is supported by a sandstone bench, which will prevent <br />further movement. The drainage bottom may need to be crossed at couple of locations to <br />maintain road grade. However, use of Best Management Practices (BMPs), including <br />crossing the drainage course at right angles and controlling sediment will minimize <br />impacts. The estimated amount of soil disturbance for [he new temporary road is the <br />same as Alternative 2. <br />26 <br />
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