2008-07-18_HYDROLOGY - C1981019

• Permit No: C1981019
• IBM Index Class Name: HYDROLOGY
• Doc Date: 7/18/2008
• Doc Name: 2nd Qtr 2008 DMRs
• From: Colowyo Coal
• To: DRMS
• Permit Index Doc Type: DMR’s
• Email Name: JRS
• Media Type: D
• Archive: No

RECEIVED
2'nd QUARTER 2008
Streeter Pond
JUL 18 2008
Division of Reclamaft,
Mining and Safety
NOTES
7/2/20081:47 PM2'nd Qtr DMR_08]
OUTFALL
ID DISCHARGE
START DISCHARGE
END SAMPLE
DATE FIELD
PH
LAB PH
TSS
SS
FE FLOW
(MGD)
TDS OIL/
GREASE FIELD
eC
001A 04/01/08 7.83 8.2 13.0 <.2 0.22 0.190 980 none 1571
001A 04/07/08 8.05 N/A N/A N/A N/A 0.120 N/A none 1857
001A 04/18/08 7.82 N/A N/A N/A N/A 0.160 N/A none 1007
001A 04/21/08 8.16 N/A N/A N/A N/A 0.130 N/A none 695
001A 04/28/08 8.07 N/A N/A N/A N/A 0.103 N/A none 2062
001A 05/07/08 7.23 8.1 13.0 <.2 0.54 0.226 1170 none 1630
001A 05/15/08 7.77 N/A N/A N/A N/A 0.459 N/A none 1947
001A 05/19/08 7.92 N/A N/A N/A N/A 0.187 N/A none 2013
001A 05/28/08 8.20 N/A N/A N/A N/A 0.103 N/A none 2566
001A 06/05/08 8.36 8.1 20.0 <.2 0.31 0.019 2020 none 2024
001A 06/09/08 8.12 N/A N/A N/A N/A 0.078 N/A none 1988
001A 06/19/08 7.88 N/A N/A N/A N/A 0.030 N/A none 2169

Minimum 7.23 8.10 <5 < 2 0.22 0.019 980 none 695
Maximum 8.36 8.20 <5 <.2 0.54 0.459 2020 none 2566
Monthly Apr
Flume size - 12" Average May
June
Report minimum for the quarter - pH
Report maximum for the quarter - pKFe,TDS,TSS,SS,FIow
Report maximum highest 30 day average - Fe,TSS,Flow
Report maximum number of time sampled in quarter
Sample for Fe,TDS,TSS,SS,Flow at least once/month if discharging continuously
Sample for pH,flow, visual oil & grease if discharging continuously once/week
CF 21.1.2 2008
DMR DISCHARGE DATA
<5 <.2 0.22 0.141
<5 <.2 0.54 0.244
<5 <.2 0.31 0.042
2'nd Qtr DMR_08.xis Page 1