2015-01-30_HYDROLOGY - C1981008 ‎(2)‎

• Permit No: C1981008
• IBM Index Class Name: Hydrology
• Doc Date: 1/30/2015
• Doc Name: December 2014 DMRS ‎(CO-0000213)‎
• From: Tri-State Generation and Transmission Association, Inc
• To: DRMS
• Permit Index Doc Type: DMR’s
• Email Name: BFB
• Email Name: DIH
• Media Type: D
• Archive: No

Client: western Fuels C0400213 SCG )Project No.: 314517.B
Site: New Horizon Mine 007
WET TEST REPORT FORM — CHRONIC
Permittee: Western Fuels Colorado Outfall: 007
Permit No.: CO- 0000213
Test Type: Routine ® Accelerated ❑
Test Species: Ceriodaphnia dubia ' IwC: 100%
Test Start Test End
Time Test Start Date Time Test End Date
1220 10 -07 -2014 1215 10-13 -2014
t (
1 1 1 1 1 1 1
f i l
- % Effluent
% Survival for day 1
100
100
100
100
100
90
% Survival for day 2
100
100
100
100
poll
90
% Survival for day 3
100
- % Effluent
% Survival for day 1
100
100
100
100
100
90
% Survival for day 2
100
100
100
100
100
90
% Survival for day 3
100
90
100
90
100
90
% Survival for day 4
100
90
100
90
90
80
% Survival for 5
100
90
100
90
90
80
% Survival for day 6
100
80
100
90
90
80
Hardness (mg/L) — Receiving Water: N/A Effluent: 360/272/287 Recon Water: 100
Alkalinity (mg/L) — Receiving Water: N/A Effluent: 188/202/228 Recon Water: 62
Chlorine (mg/L) — Effluent: pH (initial/final) — Control: 7.9/8.4 100%:7.6/8.6
<0.01/<0.01/0.02
Total Ammonia as NH3 (mg/L) - Effluent: <0.03
Were all Test Conditions in Conformance with Division Guidelines? YES Q9 NO Lj
If NO, list deviations from test specifications:
Laboratory: SeaCrest Group
Comments:
Analyst's Name: Alex Arnold, Raelynn Kadunc, Andrea Stucky and Lauren von Klinggraeff
SeaCrest Group is