2010-10-25_HYDROLOGY - M1977300

• Permit No: M1977300
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/25/2010
• Doc Name: Third Quarter Whole Effluent Toxicity Testing Results
• From: Cotter
• To: CDPHE/WQCD
• Permit Index Doc Type: Hydrology Report
• Email Name: DB2
• Media Type: D
• Archive: No

Client: Cotter Corporation SCG Project No.: 310921
Site: 001A
WET TEST REPORT FORM - CHRONIC
Permittee: Cotter Corporation Outfall: 001A
Permit No.: CO-0001244
Test Type: Routine ® Accelerated ?
Test Species: Ceriodaphnia dubia IWC: 100%
Test Start Test End
Time Test Start Date Time Test End Date
------- - ---- - ----------------- -
1500 09-09-2010 1540 09-16-2010
Jest Results Lethality Reproduction
Conc. with Stat. Difference >100% >100%
PASS N/A
1 25 >100% >100%
PASS N/A
]nilntinnrel - of rf+7..o.,*
Hardness (mg/L) - Receiving Water: N/A Effluent: 642/709/751
Alkalinity (mg/L) - Receiving Water: N/A Effluent: 174/206/209
Chlorine (mg/L) - <0.01 pH (initial/final) - Control: 8.3/8.5
Total Ammonia as NH3 (mg/L) - Effluent: <0.03
Recon Water: 100
Recon Water: 64
100%: 7.5/8.6
Were all Test Conditions in Conformance with Division Guidelines? YES ® NO
If NO, list deviations from test specifications:
Laboratory: SeaCrest Group
Comments:
Analyst's Name: Paniz Bighash, Melissa Mimna, and Dustin Facteau
Date- a.g ' Z.o

Measurements Control
0%
12.5%
25% -
50%
75%
100%
% 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 4 100 100 100 100 100 100
% Survival for day 5 100 100 100 100 100 100
% Survival for day 6 100 100 100 100 100 100
Mean 3 Brood Total. 17.9 15.8 ` 14.7 13,1 15.1 15.2
H Max./Min. 8:7/8.2 8.7/7.9 8.6/7.8 86/7.6 8.6/7:3 8.6/7.3
SeaCrest Group 18