REP25377

• Permit No: C1996083
• IBM Index Class Name: Report
• Doc Date: 5/2/2001
• Doc Name: 2000 ANNUAL HYDROLOGY REPORT PART 2 OF 4
• Annual Report Year: 2000
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

• Bowie Resources Limited April 25, 2001
Bowie No. 2 Mine
Annual Hydrology Report
Surface Water Monitoring Stations: STREAMS AND DITCHES
Thirty four surface water monitoring stations including the North Fork of the Gunnison, Terror
Creek, Hubbard Creek, Freeman Gulch, the Deer Trail Ditch, Stephens Draw, the Fire Mountain
Canal and Gulches A through D are monitored quarterly for field parameters and semi-annually
for full suite analysis. The results of the 2000 field and laboratory studies aze consistent with
baseline information supplied in the permit application. Flow data for the North Fork of the
Gunnison river is obtained from the USGS from a website nwis-colo.cr.uses.eov/historic.html.
This flow reading is obtained telemetrically from a station near Somerset, CO and is reflective of
upper stream flows only.
Surface Water Monitoring Stations: SMALL AREA EXEMPTIONS
The locations of the small azea exemptions aze presented on Pemilt Map 20. The Applicant will
monitor the flow from the small azea exemptions to assure compliance with 4.05.2(3). The
Applicant will use its best efforts to obtain samples. The samples will be analyzed for pH,
conductivity and total settleable solids. Samples will be in compliance if they contain settleable
solid levels of 0.5 ml/1 or less and the pH is greater than 6.5 and less than 9.0.
Run-off from the material storage area located below drainage area E and pond C does not go
• through a treatment facility such as a sediment pond. The material storage area is located north of
the haul road along the old rail bed. Run-off from the haul road along the old rail bed does not go
through a treatment facility either. Run-off from these adjacent azeas is controlled by berms and
ditches. A berm along the south side of the azea contains drainage to the ditch on the north side
of the material storage azea. Run-off from the material storage area and haul road is directed to
ditch D-E1. Sediment traps will be installed in ditch D-E1 as shown on Map 21-1. The sediment
traps will be straw bales, silt fences or other approved devices. The sediments traps will slow and
remove sediment from the run-off from the material storage azea and haul road. The sample point
for this SAE near the dewatering valve for pond C.
Run-off from the pump station located neaz the Deer Trail Ditch will not be contained in a
sediment pond. The pump station is located below old State Highway 133 in a location where
sediment pond construction would be difficult. Run-off ftom the azea disturbed by the pump
station construction will be filtered through a sediment trap such as straw bales, silt fences or
other approved devices. The location of the sediment trap for the pump house is presented on
Map 21-1. No samples were obtained from any of the SAE's during the year.
Coal Member of Mesaverde
Fifteen drill holes were monitored during the 2000 sampling season. These holes were monitored
quarterly for field parameters and semi-annually for full suite laboratory analysis. Data collected
and evaluated is consistent with the baseline information provided in the permit application. The
mine construction work during 1997 required the elimination of four monitored drill holes. These

4