2009-07-27_HYDROLOGY - C1981019

• Permit No: C1981019
• IBM Index Class Name: HYDROLOGY
• Doc Date: 7/27/2009
• Doc Name: 2nd Quarter 2009 DMRS
• From: Colowyo Coal Company
• To: DRMS
• Permit Index Doc Type: DMR’s
• Email Name: JRS
• Media Type: D
• Archive: No

7/24/20099:24 AM2'nd Qtr DMR_09]
2'nd QUARTER 2009
Prospect Pond
NOTES
OUTFALL
ID DISCHARGE
START DISCHARGE
END SAMPLE
DATE FIELD
PH
LAB PH
TSS
SS
FE FLOW
(MGD)
TDS OIL/
GREASE FIELD
eC
007A 04/01/09 8.76 8.50 <5 <0.2 0.36 0.020 780 none 1026
007A 04/08/09 8.61 NA NA NA NA 0.045 NA none 838
007A 04/15/09 8.84 NA NA NA NA 0.013 NA none 879
007A 04/23/09 8.66 NA NA NA NA 0.013 NA none 876
007A 04/27/09 8.88 NA NA NA NA 0.013 NA none 961
007A 05/04/09 8.86 8.50 12 <0.2 0.30 0.013 870 none 1220
007A 05/12/09 8.32 NA NA NA NA 0.013 NA none 1323
007A 05/20/09 8.52 NA NA NA NA 0.013 NA none 1990
007A 05/27/09 7.89 NA NA NA NA 0.013 NA none 1447
007A 06/04/09 8.68 8.50 5 <0.2 0.22 0.013 970 none 1689
007A 06/09/09 8.56 NA NA NA NA 0.013 NA none 2537
007A 06/15/09 8.17 NA NA NA NA 0.013 NA none 1248
007A 06/25/09 8.07 NA NA NA NA 0.013 NA none 1167

Minimum 7.89 8.50 5.00 <0.2 0.22 0.013 780 none 838
Maximum 8.88 8.50 12.00 <0.2 0.36 0.045 970 none 2537
Flume size - 30" Monthly Apr
Average May
Jun
Report minimum for the quarter - pH
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 2009
DMR DISCHARGE DATA
<5 <0.2 0.36 0.021 780
12 <0.2 0.30 0.013 870
5 <0.2 0.22 0.013 970
2'nd Qtr DMR 09
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