REP18371 - Laserfiche WebLink

Home Browse Search

Bowie Resources Limited Bowie No. 2 Mine 1998 Annual Hydrology Report Surface Water Monitoring Stations: SPRINGS Fifteen springs within the permit boundary were monitored during the 1998 monitoring season in accordance with the Hydrologic Monitoring Plan included ar the pemrit application. This plan indicates that identified springs will be inspected quarterly for fieM pazameters with full suite laboratory parameters required on springs with flows greater than five (5) gallons per minute. During the construction phase ofthe mine, four (4) of these springs (S-6, S-7, S-9 and 5-15) were eliminated by road and portal bench construction activities. The 1998 field and laboratory analysis is consistent with baseline data provided in the permit application. An additiona136 springs and/or springs with ponds were monitored in order to gather baseline information for a future permit revision. Surface Water Monitoring Stations: STREAMS AND DTTCHES Nineteen surface water monitoring stations including the North Fork of the Gunnison, Terror Creek, Hubbard Creek, Freeman Gulch, the Deer Trail Ditch, Stephens Draw and Gulches A through D aze monitored quarterly for field pazameters and semi-annually for fiill suite analysis. The resuhs of the 1998 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 http://www.nwis-colo.cr.usgs.gov/historic.html. This flow reading is obtained telemetrically from a station neaz Somerset, CO and is reflective of upper stream flows only. Ten additional surface water monitoring stations were monitored to gather baseline information for a future permit revision. These include the Sheep Corral, Dove Gulch, Ironpoint, Hubbazd Creek and Upper Terror Creek drainage basins. Surface Water Monitoring Stations: SMALL AREA EXEMPTIONS The effects of the five Small Area Exemptions included within the permit area are monitored through the sample points described in the permit application and further described herein. The runoff of all SAE azeas is directed by ditches, berms and culverts to sediment traps consisting of straw bales, sih fences or other approved devices. These sediment traps slow and remove sediment from the run-offof the SAE azeas. Run-off from the material storage azea and haul road is duected to loch D-E 1. The sample point for this SAE is the outlet of culvert C-F1. Run-off from the pump station located neaz the Deer Trail Ditch will not be sampled as little tvn- off is expected after the initial construction and disturbance is revegetated. Additionally, any • overflow from the pump station due to mechanical emergencies would simply return Deer Trail Ditch water to its source. Run-off is currently duetted through a sediment trap consisting of straw bales, silt fences or other approved devices. Page 3