HYDRO27494

• Permit No: C1980001
• IBM Index Class Name: Hydrology
• Doc Date: 7/23/2004
• Doc Name: June 2004 DMRs & 2nd Q 2004 WET Test
• From: WWC Engineering
• To: DMG
• Permit Index Doc Type: DMR’s
• Media Type: D
• Archive: No

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COLORADO -CDPS WET TEST REPORT FORM -CHRONIC
PERMITTEE: P & M Edna Mine
TYPE TEST: ROUTINE: XX
CDPS NO.: CO-0032638
ACCELERATED:
OUTFACE: 007
TEST SPECIES: P. promelas
TEST RESULTS LETHALITY GROWTH STATISTICAL METHOD
ConcenUation with Statistical Difference 12.5% >100% Dunnett's/Steel's Man -One
Pass/Fail Fail N/A
IC25 Point Estimate 11.4% >100% Bootstra
Pass/Fail Fail N/A
TEST TIME & DATE START 1135 AM 06/22/04 END 1125 AM 06/29/04
DILUTION (% EFFLUENT)
MEASUREMENTS CONTROL 12.5% 28.6% 50% 75%
r 100%
Da 1 % Survival 100 100 100 100 100 100
Da 2 100 100 100 100 100 100
Da 3 100 95 80 97.5 77.5 100
Da 4 100 90 75 90 72.5 95
Da 5 100 85 70 85 70 90
Da 6 100 77.5 60 82.5 65 82.5
Da 7 100 72.5 50 80 60 82.5

7 Da Mean D Wei ht 0.475 0.464 0.295 0.468 0.489 0.621

H Maximum/Minimum 8.1/7.6 8.4/7.8 8.2/7.8 8.317.9 8.3/7.8 8.4/7.7
RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CI- (mg/I): <0.1
HARDNESS (mg/Il: REC'V WATER: EFFLUENT: - 2375 RECON WATER: 140
Y.
ALKALINITY (mg/0: REC'V WATER: EFFLUENT: 258 RECON WATER: 85
TOTAL AMMONIA (mg/I): INITIAL 100%: <1.0 FINAL 100%: <1.0
WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES
IF NO, LIST DEVIATIONS.FROM TEST SPECIFICATIONS:
LABORATORY: SGS MINERALS SERVICES DIVISION ANALYST ~~% 7
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