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2017-09-25_REVISION - C1981008
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2017-09-25_REVISION - C1981008
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Last modified
9/26/2017 6:51:28 AM
Creation date
9/26/2017 6:32:57 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981008
IBM Index Class Name
Revision
Doc Date
9/25/2017
Doc Name
Adequacy Review Response
From
Tri-State Generation and Transmission Association, Inc
To
DRMS
Type & Sequence
TR77
Email Name
BFB
DIH
Media Type
D
Archive
No
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Surface Water <br />Surface water monitoring sites are comprise of several sites which comprise the current, <br />upstream and downstream condition and are briefly described below. Please see Map 2.04.7-1A <br />for locations. <br />• SW -N102 is located on a tributary of Calamity Draw at the discharge point for Pond 007. <br />• SW -N103 represents the downstream condition on Calamity Draw. <br />• SW -N108 represents the upstream condition upstream Calamity Draw. <br />• SW -N104 is located at the inlet of the 26" HDPE pipe on the West Lateral Ditch <br />upstream of the mine permit area. <br />• SW -N1 is located on Tuttle Draw and represents the upstream condition above mining. <br />• SW -N3 is located on Tuttle Draw and represents the downstream condition below <br />mining. <br />Surface water monitoring data for all sites listed above can be found in Appendix 1. <br />New Horizon currently samples each surface water site for a variety of quality parameters. Of all <br />the parameters that are analyzed for, several key indicator parameters have been identified and <br />are addressed for this hydrology report. These parameters are lab pH, lab conductivity, TDS, <br />sulfate, calcium, iron, magnesium, and sodium. Summary graphs of the indicator parameters for <br />all monitoring locations are provided in Appendix 2. <br />Calami , Draw — Data for sites SW -N108 (up gradient site), SW -N103 (down gradient site), and <br />SW -N102 (Outfall at Pond 007 and denoted as NPDES 007) have been complied and are shown <br />on the summary tables below and graphically. Summary tables for indicator parameters are <br />provide below for each site and include data from 2000 to 2016 if available. <br />2 1 P a g e <br />
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