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2014-02-20_REPORT - C1981019 (10)
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2014-02-20_REPORT - C1981019 (10)
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Entry Properties
Last modified
3/29/2017 2:41:09 PM
Creation date
2/21/2014 9:49:08 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Report
Doc Date
2/20/2014
Doc Name
Annual Hydrology & Reclamation Report
From
TRI-State Generation and Transmission Association, Inc
To
DRMS
Annual Report Year
2013
Permit Index Doc Type
Annual Reclamation Report
Email Name
RDZ
DIH
Media Type
D
Archive
No
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Colowyo Coal Company <br />2013 Annual Reclamation and Hydrology Report <br />A -7 Well: <br />Parameter <br />Mean <br />Std <br />dev <br />Range <br />Max. <br />Min. <br />Max at <br />Min at <br />Lab pH <br />7.96 <br />0.19 <br />0.7 <br />8.3 <br />7.6 <br />05/21/13 <br />11/10/08 <br />Lab Cond. <br />1501.74 <br />212.68 <br />1100 <br />2260 <br />1160 <br />06/18/08 <br />05105110 <br />TDS <br />1184.35 <br />292.65 <br />1110 <br />2100 <br />990 <br />06/18/08 <br />08/19/09 <br />Sulfate <br />448.48 <br />166.28 <br />772 <br />1110 <br />338 <br />06/18/08 <br />05105110 <br />Calcium <br />130.09 <br />23.40 <br />102 <br />214 <br />112 <br />05/03/11 <br />03/21/11 <br />Iron <br />0.05 <br />0.01 <br />0.05 <br />0.1 <br />0.05 <br />08/17/11 <br />06/18/08 <br />Magnesium <br />127.52 <br />33.76 <br />146 <br />244 <br />98 <br />06/18/08 <br />03/21/11 <br />Sodium <br />46.70 <br />8.06 <br />40 <br />77 <br />37 <br />06/18/08 <br />08/19/09 <br />Elevation <br />6888.89 <br />3.40 <br />14.63 <br />6899.69 <br />6885.06 <br />05/03/11 <br />10/31/12 <br />Evaluation of 2013 data for A -7 Well <br />No results from 2013 sampling were minimum or maximum values for any parameters <br />listed above during the monitoring period. Trend line analysis determined no significant <br />correlations over time. <br />A -8 Well: <br />Parameter <br />Mean <br />Std dev <br />Range <br />Max. <br />Min. <br />Max at <br />Min at <br />Lab pH <br />8.00 <br />0.21 <br />0.8 <br />8.4 <br />7.6 <br />05/21/13 <br />11/10/08 <br />Lab Cond. <br />1188.10 <br />337.77 <br />1443 <br />2330 <br />887 <br />03/12/13 <br />0515110 <br />TDS <br />919.50 <br />344.30 <br />1420 <br />2040 <br />620 <br />03/12/13 <br />03/13/12 <br />Sulfate <br />325.95 <br />205.70 <br />804 <br />977 <br />173 <br />03/12/13 <br />08/03/10 <br />Calcium <br />120.45 <br />32.48 <br />129 <br />219 <br />90 <br />03/12/13 <br />06/18/08 <br />Iron <br />0.07 <br />0.07 <br />0.31 <br />0.36 <br />0.05 <br />11/10/08 <br />06/18/08 <br />Magnesium <br />97.90 <br />34.46 <br />142 <br />214 <br />72 <br />03/12/13 <br />03/13/12 <br />Sodium <br />17.30 <br />5.98 <br />24 <br />35 <br />11 <br />03/12/13 <br />03/13/12 <br />Elevation <br />7106.14 <br />5.19 <br />16.72 <br />7116.93 <br />7100.21 <br />06/18/08 <br />08/02/12 <br />Evaluation of 2013 data for A -8 Well <br />Maximum values for pH, conductivity, TDS, Sulfate, Calcium, Magnesium, and Sodium <br />were recorded during 2013. Trend line analysis determined no significant correlations <br />over time. Colowyo is unaware of any change in management or additional disturbance <br />up gradient of this location. This location of this well is up gradient of all mining activity <br />and is not representative of potential impacts from mining. No samples were taken <br />during the fourth quarter of 2013 due to the fact the well was dry at the time of sampling. <br />NGSW: <br />Parameter <br />Mean <br />Std <br />dev <br />Range <br />Max. <br />Min. <br />Max at <br />Min at <br />Lab pH <br />7.78 <br />0.30 <br />1.7 <br />8.5 <br />6.8 <br />08/19/91 <br />10/03/00 <br />Lab Cond. <br />1995.39 <br />271.60 <br />1550 <br />2700 <br />1150 <br />10/17/91 <br />04/27/98 <br />TDS <br />1627.49 <br />250.73 <br />1320 <br />2100 <br />780 <br />08/13/08 <br />04/27/98 <br />Page 2 -6 <br />
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