My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2016-01-28_REPORT - C1981018
DRMS
>
Day Forward
>
Report
>
Coal
>
C1981018
>
2016-01-28_REPORT - C1981018
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 6:15:24 PM
Creation date
1/28/2016 10:15:24 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981018
IBM Index Class Name
Report
Doc Date
1/28/2016
Doc Name
October 2014 Thru September 2015 Annual Hydrology Report
From
Blue Mountain Energy
To
DRMS
Annual Report Year
2015
Permit Index Doc Type
Hydrology Report
Email Name
CCW
JRS
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.
/
96
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
Outfall 029 was added to the permit to allow for pumping, treatment and discharge of B - <br />seam water from the mine workings to the surface. The facilities associated with this <br />system were constructed and commissioned in May of 2012. No discharge has occurred <br />through Outfall 029 to date. <br />The NPDES permit was renewed effective October 1, 2007. A renewal application was <br />timely submitted in March of 2012. The CDPHE has not renewed this permit to date and <br />we continue to operate per the amended permit received when Outfall 029 was added. <br />2.2.1.7 Whole Effluent Toxicity (WET) Testing WET testing for the D -Seam discharge, <br />Outfall 026, showed excessive toxicity to Daphnia magna and Fathead minnows. We are <br />currently following NPDES Permit protocol to determine the cause of the toxicity then <br />develop a suitable plan to address this issue. <br />2.3 Red Wash Alluvial Monitoring Program <br />Portions of Red Wash experienced subsidence due to longwall mining at the Deserado <br />Mine. As required by CMLRD (now DRMS), BME initiated a detailed hydrology monitoring <br />program in Red Wash above the first longwall panel to be mined. The monitoring program <br />consisted of nine (9) holes drilled in the Red Wash alluvium across the predicted zone of <br />subsidence from longwall panel 1 (LW -1). Water levels in the holes were monitored before, <br />during, and after subsidence took place. The purpose of the monitoring program was to <br />determine if surface flow in Red Wash was lost to bedrock as the result of subsidence. <br />The monitoring data, analysis and conclusions were submitted to CMLRD in an Interim <br />Report, November 1987, and in the Third Annual Hydrology Report, January 1988. The <br />monitoring program determined that surface flow in Red Wash was not lost to bedrock as a <br />result of subsidence. The major conclusions of the study were: <br />• Recharge of the basal alluvium was from the upper sandstone facies (bedrock) <br />and not from infiltration of surface runoff. <br />• Subsidence cracks in Red Wash as the result of longwall mining were quickly <br />filled with clay and silt preventing loss of surface water flow to bedrock. <br />Longwall mining of panel 2 (LW -2) passed under Red Wash in September 1988. The <br />surface elevation subsided approximately 3.7 and 4.1 feet at RW -7 and RW -9 respectively. <br />Events in Red Wash over LW -2 were expected to occur in the same fashion as those seen <br />over LW -1. The subsidence trough was developed and any subsequent flow in Red Wash <br />11 <br />
The URL can be used to link to this page
Your browser does not support the video tag.