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 CO- 0000213 SCG Project No.: 31442 &B
Site: New Horizon Mine 013
WET TEST REPORT FORM — CHRONIC
Permittee: Western Fuels Colorado Outfall: 013
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
1330 08 -12 -2014 1340 80 -19 -2014
- % Effluent
% Survival for day 1
100
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100
100
100
100
% Survival for day 2
100
100
100
100
100
100
% Survival for day 3
100
100
100
- % Effluent
% Survival for day 1
100
100
100
100
100
100
% Survival for day 2
100
100
100
100
100
100
% Survival for day 3
100
100
100
100
100
100
% Survival for day 4
100
100
100
100
100
1 100
% Survival for day 5
100
100
100
100
100
90
% Survival for day 6
100
100
100
100
100
90
% Survival for day 7
90
100
100
100
100
90
Hardness (mg/L) — Receiving Water: N/A Effluent: 1189/707/1330 Recon Water: 88
Alkalinity (mg/L) — Receiving Water: N/A Effluent: 247 /180 /305 Recon Water: 59
Chlorine (mg/L) — Effluent: <0.01 pH (initial/final) — Control: 8.1/8.1 100 0/o: 7.4/8.2
Total Ammonia as NH3 (mg/L) - Effluent: <0.03
Were all Test Conditions in Conformance with Division Guidelines? YES X NO
If NO" list deviations from test specifications:
Laboratory: SeaCrest Group
Comments:
Analyst's Name: Lauren von Klinggraeff and Raelynn Kadunc
SeaCrest Group 18