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September 15, 2015 C-1982-057/Seneca II -W Mine JHB <br />SCC has completed replacement, levelling or maintenance of sediment pond flumes for the 2015 season. <br />Pond 16 flume has been cleared of sediment and vegetation and is flowing well. This flume is not completely <br />level, but a reasonable flow can be determined. When flow is low, SCC uses the bucket & stopwatch method to <br />measure the discharge flow rate. The discharge on 9/15 was less than 0.01 on the staff gauge on the flume. Flow <br />measurement at this low flow is inaccurate due to scale increments and the flume size. Large trout have <br />previously been observed swimming and rising in this pond. Due to the windy weather conditions, only two trout <br />were observed on the afternoon of 9/15. Pond 16 receives a perennial flow of spoil spring water. <br />Spoil spring east of Pond 16 was flowing steadily. Orange staining was observed on the rocks near this spring. <br />Scratching the rocks appears that this orange staining may be an algae. <br />Two of the 7 spoil springs in the well cluster, W-25, were leaking with artesian flow (Photos 9 &10). Dennis <br />Jones was notified of these leaks. Follow up with Scott Cowman on 9/17, Scott informed the inspector that the <br />valves had been tightened and they were no longer leaking at the previous flow. SCC will be winterizing these <br />wells before long. <br />Drainages PM -2C and unnamed drainage north of PM -2C were holding up well. Vegetation establishment on this <br />area was diverse with a good stand of sagebrush. PM -213-1 surge tank was holding a pool of water, but was well <br />below the discharge elevation. <br />The contour ditch between Surge Tank PM -213-1 and Stock Tank T-27 has breached. Evidence of rilling on the <br />north side of the ditch was noted. SCC needs to repair the breached sections of the contour ditch. PM -213-2 <br />Surge tank was dry. <br />PM -6 drainage was in good repair. <br />PM -2A drainage looked good. No additional head -cutting was noted. Repairs looked effective. A gully is <br />beginning to form on the west side of PM -2A drainage (Photo 6 & 7). Runoff from this gully flows into the <br />undisturbed area. SCC needs to redirect the runoff away from this gully to reduce further development of <br />this feature. Approximate length of this feature is —200 feet long and ranges from 12"-18" deep. <br />Pond 5 flume has been replaced and levelled. Pond 5 was not discharging (Photo 11). No problems were <br />identified with pond 5. Stock tank -24 was dry, Stock tank -22 was flowing slightly. T-22 has cattails and a rocked <br />discharge outlet. This stock tank is functioning well. T-20 was holding no water. Stock tank T-18 was holding <br />water but was not discharging. Drainages in the 005 watershed were holding up well. <br />Pond 6 was discharging clear. Vegetation has been cut back from the Pond 6 flume. The flume remains <br />unleveled. An accurate flow measure was not able to be read due to the slight cant to the flume. Flow appeared to <br />be about 1/2" deep on the lower side of the flume. <br />ROADS — Rule 4.03 <br />Number of Partial Inspection this Fiscal Year: 2 <br />Number of Complete Inspections this Fiscal Year: 1 <br />Page 3 of 8 <br />