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2013-04-05_PERMIT FILE - C1996083A (20)
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2013-04-05_PERMIT FILE - C1996083A (20)
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Last modified
8/24/2016 5:19:11 PM
Creation date
5/16/2013 12:53:28 PM
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Template:
DRMS Permit Index
Permit No
C1996083A
IBM Index Class Name
Permit File
Doc Date
4/5/2013
Doc Name
APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND MINING ACTIVITIES
Section_Exhibit Name
Volume I 2.04 Information on Environmental Resources
Media Type
D
Archive
Yes
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2.04.7 Hydrology Description <br />range of 1,249 to 4,300 umhos /cm, the average ph was 9.9 with a range of <br />9.1 to 11.5, average total iron was 6.4 mg /I with a range of 0.05 to 17.2 mg /I <br />and average manganese was 0.184 mg /I with a range of below detectable <br />limits to 0.507 mg /1. Well TC -03 -03 has had a pinched casing since 2006 <br />and the well has been sealed. <br />During July and August 2010 exploration hole DH- 2010 -2 was drilled in the <br />west mining district. The hole was located on private land owned by the <br />Turkey Track Ranch. This private landowner consented to the Applicant <br />drilling the exploration hole but would not consent to the hole being <br />converted into a monitoring well. The Applicant closely monitored this hole <br />for groundwater inflows. At a depth of 1,400 feet there was indication of <br />groundwater inflow. The Applicant set a packer below the water bearing <br />zone and collected a sample. Total dissolved solids were 980 mg /I, ph was <br />9.1, total iron was 184.0 mg /I and manganese was 2.42 mg /1. The coal <br />seam was at a depth of 2,054 feet. The coal seam was dry. A monitoring <br />well was not established because the Applicant did not have long term <br />access. Additionally, monitoring a well that is 2,054 feet deep is not <br />technically or economically feasible. <br />CWI -DH -58 and CWI- DH -60, installed by the Bowie No. 1 Mine, are up <br />gradient monitoring wells for the west mining district installed by the Bowie <br />No. 1 Mine. Completion diagrams forthe two wells are included in Volume 111, <br />Exhibit 3. <br />CWI -DH -60 was perforated at six different intervals with the top perforation <br />being the upper B -Seam. The well was monitored for depth to water from <br />July 21, 1983 until October 04, 1990. Generally the water depth was about <br />1,000 feet which is slightly above the upper B -Seam. One mixed aquifer <br />water quality sample was obtained on August 22, 1983. Conductivity was <br />7,560 umhos /cm, ph was not available, total iron was 0.58 mg /I and <br />manganese was 0.09 mg /I. The Applicant cemented CDW -DH -60 from the <br />bottom of the well to the bottom of the B -Seam in September 2010. Based <br />on monitoring after the cement job, the B -Seam is dry at this location. <br />CWI -DH -58 was perforated at eight different intervals with the second from <br />the top perforation being the upper B -Seam. CWI -DH -58 was monitored <br />from January, 1983 though October 11, 1990. The hole was reported as <br />being dry during the period of record. The Applicant removed tubing from <br />the well during August 2010 so it could confirm prior monitoring data. The <br />Applicant confirmed CWI -DH -58 was dry to a level below the B -Seam. <br />The Applicant installed two monitoring wells in 2011 to provide down gradient <br />monitoring for the western mining district west of Terror Creek. One <br />monitoring well (2010-1B) is completed in the B -Seam with a screened <br />interval of 1,190 to 1,220 feet. The second monitoring well (2010 -1 SS) is <br />PR -13 2.04 - 32i 02/13 <br />
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