2013-08-14_HYDROLOGY - C1981022

• Permit No: C1981022
• IBM Index Class Name: HYDROLOGY
• Doc Date: 8/14/2013
• Doc Name: Wet Study Results Reports
• From: Oxbow Mining, LLC
• To: DRMS
• Permit Index Doc Type: NPDES
• Email Name: BFB
• Email Name: SB1
• Media Type: D
• Archive: No

COLORADO - CDPS WET TEST REPORT FORM - CHRONIC
PERMITTEE: Oxbow Minina CDPS NO. CO -0000132 OUTFALL: 015B
TEST TYPE: ROUTINE XX ACCELERATED TEST SPECIES: P. yrome/as
IWC: 100%
TEST RESULTS
LETHALITY
GROWTH
STATISTICAL METHOD
Concentration w/ Statistical Difference
>100%
>100%
Fisher's Exact/Dunnett's
Pass/Fail
Pass
N/A
100
IC25
>100%
>100%
Bootstrap
Pass/Fail
Pass
N/A
100
TEST TIME & DATE START July 23, 2013 END
9:30 AM
DILUTION (% EFFLUENT)
July 30, 2013
9:45 AM
MEASUREMENTS
CONTROL
6.50%
13.00%
25.00%
50.00%
100%
Day 1 % Survival
100
100
100
100
100
100
Day 2
100
100
100
100
100
100
Day 3
100
100
100
100
100
100
Day 4
100
100
100
100
100
100
Day 5
100
100
100
100
100
100
Day 6
95
100
100
95
100
95
Day 7
95
100
100
95
100
95
7 Day Mean Dry Weight 1 0.249 0.211 0.221 1 0.231 1 0.2--54--7 0.244
lIpH Maximum /Minimum 7.98 -8.33 8.11 -8.33 7.96 -8.18 1
7.91 -8.03 1 7.80 -8.00 1
7.80 -8.03
RECEIVING WATER USED FOR DILUTION? NO
WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES
IF NO, LIST ALL DEVIATIONS:
HARDNESS (MG /L) EFFLUENT: 115.83 - 123.44 MHW WATER: 88.3
ALKALINITY (MG /L) EFFLUENT: 1773 -1922 MHW WATER: 81.2 -83.6
T. AMMONIA (MG /L) INITIAL EFFLUENT: <1.0 FINAL EFFLUENT: <1.0
T.RESIDUAL CHLORINE (MG /L) EFFLUENT: <0.1
LABORATORY: ENVIRO -CHEM ANALYTICAL, INC. ANALYST: Liese K. Thompson