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

7/2120081:47 PM2'nd Qtr DMR_08]
2'nd QUARTER 2008
Stoker Siding Pond
DMR DISCHARGE DATA
NOTES
OUTFALL
ID DISCHARGE
START DISCHARGE
END SAMPLE
DATE FIELD
PH
LAB PH
TSS
SS
FE FLOW
(MGD)
TDS OIL/
GREASE FIELD
eC
005A 04/01/08 7.87 8.70 <5 <.2 <0.05 0.010 1270 none 1011
04/07/08 8.18 N/A N/A N/A N/A 0.010 N/A none 1698
04/18/08 8.68 N/A N/A N/A N/A 0.006 N/A none 1726
04/21/08 8.71 N/A N/A N/A N/A 0.007 N/A none 1760
04/28/08 04/28/08 8.60 N/A N/A N/A N/A 0.007 N/A none 1808
06/05/08 06/05/08 8.86 8.7 <5 <.2 <0.05 0.006 1310 none 1768
06/09/08 8.86 N/A N/A N/A N/A 0.007 N/A none 1405
06/19/08 8.42 N/A N/A N/A N/A 0.006 N/A none 1598
06/25/08 8.23 N/A N/A N/A N/A 0.006 N/A none 1575

Minimum 7.87 8.70 <5 <.2 0.00 0.006 1270 0.00 1011
Maximum 8.86 8.70 <5 <.2 0.00 0.010 1310 0.00 1808
Flume size - 9"
Report minimum for the quarter - pH
Monthly Apr
Average May
June
Report maximum for the quarter - pH,Fe,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
<5 <.2 N/A 0.008 1270
<5 <.2 N/A N/A N/A
<5 <.2 N/A 0.006 1310
2'nd Qtr DMR_08.xis Page 5