My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
PERMFILE127029
DRMS
>
Back File Migration
>
Permit File
>
300000
>
PERMFILE127029
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 10:24:10 PM
Creation date
11/25/2007 4:12:32 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
X200714210
IBM Index Class Name
Permit File
Doc Date
7/27/2007
Doc Name
E-mail Regarding BLM FONSI and EA
From
Murari Shrestha
To
DRMS
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
43
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
Third Park Federal Coal Exploration License Environmental Assessment <br />Designated uses identified for San Miguel River in the vicinity of the Project Area include aquatic life <br />(warm 1), recreation E, and agriculture uses. Designated uses for Tabeguache Creek include aquatic life <br />(warm 1), recreation E, water supply, and agricultural uses. For tributaries to San Miguel River within the <br />Project Area, including Coal Draw, the designated uses include aquatic life (cold 2), recreation E, water <br />supply, and agricultural uses. No outstanding water resources were identified in the Project Area (CDPHE <br />2006b). <br />Section 303(d) of the Federal Clean Water Act requires states to develop a comprehensive list of <br />waterbodies that are impaired by point and/or non-point sources. Section 303(d) also requires that states <br />develop Total Maximum Daily Loads (TMDLs) for all of their impaired waters. Based on Colorado <br />Water Quality Control Commission (WQCC) 2006 303(d) list, there are no impaired waters within the <br />Project Area. However, four stream segments were listed as impaired in the upstream portion of the San <br />Miguel Watershed. These include the extreme upstream portion of San Miguel River and its tributaries, <br />Ingram Creek and Marshall Creek. All four of these stream segments are listed as impaired by zinc and <br />assigned a high priority for TMDL development (CDPHE 2006c). <br />Data from the New Horizon Mine Permit for the existing New Horizon Mine show that three main factors <br />influence the hydrology of this region: topography, lithology, and structural setting. Because of the <br />variable lithologies of the Dakota, Chinle, and Morrison Formations (interbedded sandstones, siltstones, <br />shales, and coal), the hydrology is very complex for the deep aquifers. Unconsolidated Quaternary <br />deposits, primarily of alluvial derivation, and the Dakota Formation, present the greatest potential far <br />aquifers in the Project Area (WFC 2006). Coal exploration drilling would be restricted to the Dakota <br />Formation and shallow alluvial/colluvial stream bottoms of the Third Park plateau. <br />The topography generally indicates what the water is doing under the surface. The depressions can <br />became discharge areas when the water levels are high, and conversely, the highs generally serve as <br />rechazge areas. However, the coal strata at Third Park are anticipated to be relatively dry or contain little <br />water because of the deeply incised streams around its perimeter. Because the perimeter is incised to <br />approximately 500 feet below the Third Park average surface elevation, and given that the average total <br />depth of a drill hole is approximately 135 feet, prominent aquifers and groundwater levels (static water <br />levels) are expected at greater depths than the total depth of most holes drilled. Water levels and water <br />discharged during drilling would be closely monitored to provide hydrologic information. <br />Environmental Consequences/Mitigation: Potential effects to surface water may occur as a <br />result of soils in the Project Area eroding by wind and/or water into nearby drainages. The effects on <br />surface water quality depend on the proximity of hole locations to surface water and on the drilling <br />stipulations (Appendix A) used for erosion, sedimentation, and pollution control. Surface water runoff <br />from the Project Area may reach nearby drainages Box Canyon to the South and Tabeguache Creek to the <br />north; however, with implementation of standard Best Management Practices (BMPs) for surface water <br />runoff control and development and implementation of a Storm Water Pollution Prevention Plan <br />(SWPPP), the potential impact from drilling the exploration holes on surface water quality is anticipated <br />to below. <br />Western Fuels CEL Enviranmenm! Assessmen! 1 7 <br />
The URL can be used to link to this page
Your browser does not support the video tag.