My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2011-03-14_REPORT - C1982056 (3)
DRMS
>
Day Forward
>
Report
>
Coal
>
C1982056
>
2011-03-14_REPORT - C1982056 (3)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 4:31:42 PM
Creation date
3/14/2011 10:51:34 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056
IBM Index Class Name
Report
Doc Date
3/14/2011
Doc Name
2010 Annual Hydrology Report
From
Twentymile Coal Company
To
DRMS
Annual Report Year
2010
Permit Index Doc Type
Hydrology Report
Email Name
JDM
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.
/
24
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
Water levels at well 006-AY-1, located on Fish Creek upstream of the Southwest Mining District and Mine 2, <br />• had exhibited a relatively steady increase in water level from approximately 1990 through 1994 (see Figure 34). <br />From 1994 through 1997, that trend has reversed and is generally decreasing from 1994 through 2000, and <br />appears to have subsequently stabilized. The maximum fluctuation in water level at this site over the period of <br />record is 8.5' to date. POR conductivity data has been relatively consistent the last several years (Figure 35). <br />Well 006-AZ-3 is situated downstream of 006-AY-1 and below the Fish Creek Borehole. Well 006-AZ-3 is <br />monitored in conjunction with surface water site 307 and the water level relationship is presented as Figure 36. <br />Again in 2010, the interrelationship between alluvial groundwater and surface water is evident on this plot. POR <br />conductivity data has exhibited a general increase since the late 1980's (Figure 37). <br />Downstream of 006-AZ-3 are relatively new alluvial wells, AVF-13, AVF-14, and AVF-15. Data for sites AVF- <br />13, AVF-14, and AVF-15 are provided in Tables 29, 30, and 31, respectively. Figures 38 through 43 provide <br />graphical representations of water levels and selected water quality parameters recorded at each new site. Note <br />that localized mining subsidence along Fish Creek occurred in the area of well AVF-15 during the summer of <br />2004. The general location area of AVF-15 has subsequently been permanent ponded. Note that per our <br />subsidence plan, alluvial 008-AU3 replaced AVF-15 as the downstream monitoring well for subsidence <br />evaluation in 2006. <br />Well 008-AU-3 and surface water site 305 monitor water levels upstream from the Fish Creek Tipple area with <br />data presented on Figure 44. The furthest downgradient Fish Creek alluvial monitoring well is 008-AW-3 (Figure <br />46) located near the Fish Creek Tipple. No unusual water level fluctuations were noted at any of these sites <br />during 2010. Similarly, conductivity values for these two sites were within historical ranges. <br />Trout Creek Alluvial Groundwater: There are two Trout Creek alluvial monitoring wells, 008-AT-1, and a <br />privately owned well (Jones well). Figures 48 through 51 provide graphical representations of water level and <br />field conductivity information to date. Tables 27 and 28 provide data for these wells. <br />Well 008-AT-1 is monitored in conjunction with surface water site 1005. Figure 48 depicts the water level <br />relationship between these two sites. Monitoring was initiated on Trout Creek Alluvial wells back in 1994. <br />Note that the Jones well has historically been monitored to access potential mine impacts to the Jone's potable <br />water well. In 2007, Mr. Jones constructed a weather/rodent cover and sealed off the well, restricting access for <br />taking water level measurements. In the fall of 2008, TCC provided the Jones family with underground water <br />storage tanks, a new plumbing system, and imported water, so that they could discontinue use of the well. At that <br />time, the old plumbing system to the Jones well was decommissioned eliminating alluvial water sampling access. <br />It is TCC's intend to submit a revision in 2011, to remove the Jones well from the permit. <br />Middle Creek Alluvial Groundwater: TCC has no active Middle creek alluvial wells. Two Middle Creek <br />alluvial wells (AVM-1 and AVM-2) were incorporated into the monitoring network during 1996, however, per <br />TR03-42, these wells were abandoned in the Fall of 2003. Refer to previous AHRs for earlier data. <br />9
The URL can be used to link to this page
Your browser does not support the video tag.