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2.05 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND ACTIVITIES -- <br />MINIMUM REQUIREMENTS FOR OPERATION AND RECLAMATION PLANS. <br />2.05.6 Mitigation of Surface Coal Mining Operation Impacts. (Cont'd.) <br />(3) (b) (iii) (Cont'd.) <br />station on the West Fork of Terror Creek (SW -1) and Main Roatcap Creek (SW -11) measures flow <br />through an existing culvert and a concrete rectangular weir, respectively. <br />Each month, the flumes and recorders were maintained, flow readings recorded, and field <br />parameters measured. Quarterly, water samples were taken for laboratory analysis. Results may <br />be seen in the Surface Water Appendix, Volume 4. <br />The stream gauge on the West Fork of Terror Creek, SW -1, is located in the SW /4NE /4 Sec. 5, <br />T13S, R91 W, of the 6th P.M. A 5 ft. high stilling well and housing containing a 32 -day recorder was <br />attached to the wingwall of an existing culvert which passes under a maintenance road to the <br />Curecanti- Hayden powerline. <br />SW -2 is located on the East Fork of Terror Creek in the NW /4 SE /4 Sec. 5, T13S, R91 W, of the 6th <br />P.M. A 48 -inch Parshall flume manufactured by the Thompson Pipe and Steel Company of Denver, <br />Colorado, was installed at this location. <br />The Stevens Gulch stream gauge, SW -5, is located near the timber storage area in the NE /4NW /4 <br />Sec. 25, T13S, R92W, of the 6th P.M. A 36 -inch Parshall flume was installed at this location. <br />SW -6 is located on East Roatcap Creek in the NE /4SW /4 Sec. 23, T13S, R92W, of the 6th P.M. A <br />36 -inch Parshall flume was also installed at this location. <br />SW -9 was located on the upper reaches of East Roatcap Creek, below a diversion from the <br />Overland Ditch into the creek in the NE SWO Sec. 3, T13S, R92W, of the 6th P.M.. A stilling well <br />and recorder were attached to an existing 12 -inch Parshall flume at this location. This stream gauge <br />was deleted from the monitoring program in 1986 because the primary diversion of the Overland <br />Ditch was changed to West Roatcap Creek from East Roatcap Creek. SW -9 was reinstalled on the <br />Overland Ditch diversion into West Roatcap Creek in the fall of 1988. The new installation is located <br />in the NE /4SE /4 Sec. 5, T13S, R92W, of the 6th P.M.. <br />A stilling well and recorder were installed on a 30 -inch Parshall flume on the Terror Ditch. This <br />stream gauge, SW -10, is located in the NE4 /NE /4 Sec. 17, T13S, R91 W, of the 6th P.M. <br />SW -11 is an existing concrete rectangular weir constructed to measure flows in Main Roatcap Creek <br />and is located in the NW /4 Sec. 35, T13S, R92W, of the 6th P.M. A stilling well and recorder were <br />installed at this location. <br />The responsibility for monitoring points SW -01, SW -02, SW -04, and SW -10 will be assumed by the <br />Bowie No. 2 Mine. The Bowie No. 1 Mine will share data from SW -05 with the Bowie No. 2 Mine. <br />PR -04 -117- 06/10 <br />