HYDRO30249

• Permit No: C1980001
• IBM Index Class Name: Hydrology
• Doc Date: 12/17/2003
• Doc Name: November 2003 DMRs & 4th Q WET Test
• From: WWC Engineering
• To: DMG
• Permit Index Doc Type: DMR’s
• Media Type: D
• Archive: No

ADDRESS ALL CORRESPONDENCE TO:
COh1MERCL4L TESTING 8 ENGINEERING CO.
4685 PARIS STREET, SUITE B-200
DENVER, CO 80239
TEL: [phone]
FAX: [phone]
COLORADO -CDPS WET TEST REPORT FORM -CHRONIC
PERMITTEE: P & M Edna Mine
CDPS NO.: CO-0032638
OUTFALL:004
TYPE TEST: ROUTINE: XX
ACCELERATED:
TEST SPECIES: P. aromelas
TEST RESULTS LETHALITY GROWTH STATISTICAL METHOD
Concentration with Statistical Difference 100% >100°/G Steel's Man -0ne/Dunnett's
Pass/Fail Pass N/A
1 Point Estimate >100% >100% Bootstra
PasslFail Pass WA
TEST TIME & DATE START 1225 PM 11/04/03 END 1425 PM 11/11/03
DILUTION (% EFFLUENT)
MEASUREMENTS CONTROL 12.5% 28.6% 50% 75% 100%
Da 1 % Survival 100 100 100 100 100 100
Da 2 100 100 100 100 100 100
Da 3 100 100 100 97.5 97.5 100
Da 4 100 97.5 100 90 92.5 100
Da 5 95 97.5 97.5 87.5 85 97.5
Da 6 95 97.5 97.5 87.5 82.5 92.5
Da 7 95 95 95 87.5 82.5 87.5

7 Da Mean D Wei ht 0.668 0.674 0.796 0.783 0.578 0.737

H MaximuMMinimum 8.5/8.0 8.4!7.9 8.4/7.9 8.4/7.8 8.5/7.7 8.6/7.7
RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CP (mg/l): <0.1
HARDNESS (mg/I): REC'V WATER: EFFLUENT: 2588 RECON WATER: 132
ALKALINITY (mgA): REC'V WATER: EFFLUENT: 108 RECON WATER: 83
TOTAL AMMONIA (mgfl): 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: f~' g(}~
Commercial Testing &Engineering Co. Minerals Services-Corporate Office
1919 S. Highland Ave.. Suite 2108. LGmhard, IL 60146 t [phone] f [phone]
Member at Me SGS Grou0lGOCif° GAn4rak La SumiYencel