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2011-05-23_REVISION - C1981019 (2)
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2011-05-23_REVISION - C1981019 (2)
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Last modified
8/24/2016 4:33:45 PM
Creation date
5/23/2011 2:53:26 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
REVISION
Doc Date
5/23/2011
Doc Name
2nd Adequacy Response Review
From
Colowyo Coal Company
To
DRMS
Type & Sequence
PR3
Email Name
JHB
Media Type
D
Archive
No
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Colowyo Response - PR3 adequacy No. 2 6 <br />May 6, 2011 <br />As previously stated, the dewatering of the pit area on the closest registered/permitted non- <br />Colowyo domestic or commercial wells would have no effect. <br />The closest known and registered/permitted non-Colowyo domestic or commercial wells arc, <br />located approximately two miles southeast of the initial Collom boxcut area. These wells a'? <br />located in the SWI14, Section 7, T. 3N., R. 93 W. These wells are located below the base of the <br />Williams Fork formation, in the Iles Formation, or in valley fill material along Wilson Creek. <br />This can be verified by comparing the Geology map (Map 7A) with the well location map (Map <br />11C). <br />Due to the distance both vertically and horizontally of these wells with the Collom mining area r <br />there is no possibility that any water withdrawal due to the dewatering wells can impact these <br />wells. In addition, there are no registered beneficial-use wells, other than monitoring wells or <br />wells controlled by Colowyo, in the Colorado Division of Water Resources database within tw`q_+ <br />miles down gradient or to the east or west of the Collom Lite mining area. <br />As requested, Colowyo had revised the text narrative in Section 2.05.6 3 (iii) under the sub--., <br />heading "Potential Impacts to Groundwater Users due to Pit Dewater'ng and Development". <br />Rule 2.04.8 Climatological Information <br />1. In application section Rule 2, page 47, CCC discusses collection of one year of meteorological <br />data beginning July 1, 2008 to June 30, 2009. In this section, there is no reference to the data <br />collected or the modeling conducted on the 2008-2009 data. Did CCC submit the July 1, 2008 <br />to June 30, 2009 meterologic data in the application? If the data has been submitted, please <br />reference in this section where the data can be located. Has the modeling been conducted using <br />the July 2008-June 2009 data? What were the results? <br />CCC responded and indicated that this information was being supplied to the Air Pollution <br />Control Division. Rule 2.04.8 does not require that this information be included in the DRMS <br />permit. CCC confirmed that the data was collected and submitted to AQCD. CCC's response <br />is adequate for the requirements of Rule 2.04.8. <br />Rule 2.04.9 Soils Resource Information <br />Table 2.04.9-16 proposes 6 inches topsoil replacement thickness over 2038 acres. Table 2.04.9 <br />shows 4,614,928 cubic yards topsoil and subsoil is available for salvage on the proposed <br />disturbance areas. Salvage of both topsoil and acceptable subsoil would allow for replacement <br />of approximately 1.4 feet of topsoil and subsoil. Please revise table 2.04.9-16 to show that <br />CCC would also salvage and replace acceptable subsoil as well as topsoil. <br />CCC corrected Table 2.04.9-16 appropriately and adjusted the salvage values to remove areas <br />that will no longer be disturbed by the proposed Little Collum X mine plan. This response is <br />acceptable.
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