My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2016-03-02_REPORT - C1981022
DRMS
>
Day Forward
>
Report
>
Coal
>
C1981022
>
2016-03-02_REPORT - C1981022
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
3/29/2017 9:59:53 AM
Creation date
3/3/2016 10:06:46 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981022
IBM Index Class Name
Report
Doc Date
3/2/2016
From
Oxbow Mining, LLC
To
DRMS
Annual Report Year
2015
Permit Index Doc Type
Hydrology Report
Email Name
LDS
JRS
Media Type
D
Archive
No
Jump to thumbnail
< previous set
next set >
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
224
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
The information is collected in order to aid in analyzing 1) potential water depletions and 2) <br />potential for injury to any Bear Creek water rights. Due to return of more seemingly "favorable" <br />precipitation conditions in 2014, Bear Creek stream flows ceased during the usual mid June <br />timeframe. A spike in 2011 total iron levels appeared tied to TSS and seemed "normal" in 2014. <br />A spike in 2012 chloride level occurred for no apparent reason. Some 2009, 2010 and 2011 <br />reduced levels of sodium, calcium, conductivity, TDS, and bicarbonate alkalinity appeared to <br />remain at historic levels. The orthophosphate spike remains under the minimal 0.09 mg/l level. <br />Here the importance in the role of the scale of the Y axis seems to predominate. Analysis of the <br />2014 data, as well as subsidence monitoring and observations in the field, suggests no significant <br />anomalies or any indication of adverse effects attributable to mining activities. <br />E-1- Lower Elk Creek <br />Surface water monitoring point E-1 - Lower Elk Creek, an ephemeral drainage, is monitored as a <br />down gradient site to verify that the Elk Creek Mine and the surface facility located at Somerset <br />does not have an adverse affect on the quality of runoff in the drainage. During spring <br />snowmelt, elevated levels of TSS and Total Recovered Iron are routinely encountered, <br />presumedly from natural upstream erosion in the unstable Elk Creek drainage, until streamflows <br />subside. Naturally occurring slide blocks exist in the Elk Creek headwaters and no doubt <br />contribute additional sediment loading. <br />Of particular note is the possible lingering effects of pumping the two mine recovery boreholes <br />#1 and #2 during 3 months in 2013. Elevated levels of TDS from naturally occurring alkalinity <br />were noted in the E-1 sampling during 2013. The additional pumping flows extended the 2013 <br />runoff period in Elk Creek. Elevated dissolved solids raised conductivity measurement during <br />pumping, but quickly returned to "normal" after pumping was terminated on September 9, 2013. <br />2014 and 2015 data indicate no lingering effects from the pumping. <br />An analysis of the data suggests there is no adverse impact of the Elk Creek Mine to Lower Elk <br />Creek. <br />E-2- Upper Elk Creek <br />Surface water monitoring point E-2 - Upper Elk Creek, an ephemeral drainage, is monitored to <br />verify that the Elk Creek mine does not have an adverse affect on the quality of runoff in the <br />drainage. In addition, the site will serve as an up -gradient site to monitor Elk Creek prior to <br />entering the OMLLC surface facility. See the above comments for site E-1 for the discussion on <br />the dewater recovery boreholes. <br />An elevated September 2014 and July 2015 chloride levels appear to be anomolies, as the down <br />dip site does not show a similar chloride level. An analysis of the data suggests there is no <br />adverse impact of the Elk Creek Mine to Upper the upper Elk Creek site or this segment of <br />Lower Elk Creek in particular. <br />S-1 — Upper Sanborn Creek and S-2 — Lower Sanborn Creek <br />Surface water monitoring points S-1 - Upper Sanborn Creek and S-2 — Lower Sanborn Creek <br />were established to monitor the flow in ephemeral Sanborn Creek above and below the disturbed <br />
The URL can be used to link to this page
Your browser does not support the video tag.