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4.05.2 and applicable State and Fe~'eral water quality standards for receiving <br />streams, and also due to the fact that no mixing of surface drainage with a dischazge <br />from underground workings will occur. The small areas to be exempted are the <br />office area and two boneyard areas. The three areas comprise a total of 5.41 acres of <br />disturbance. (4.05.2(3)(6)(1)). <br />B. Diversions and Conveyance of Overland Flow <br />Drainage channels will be reestablished to their original natural pattern to minimize <br />erosion, to conserve soil moisture and promote vegetation. All postmine drainage <br />channels are mulched and revegetated soon after topsoil placement as is practical <br />and the appropriate growing season occurs. <br />Seneca Coal Company has permitted one ephemeral stream channel reconstruction <br />on the reclaimed mine site; the Wolf Creek Fill Downdrain. The Wolf Creek Fill <br />diversion is permitted as arip-rapped trapezoidal channel with bottom width of ten <br />feet and 3h:ly side slopes. The downdrain will be constructed in 1998 after the hau: <br />road ramp is reclaimed and no longer needed. This diversion will divert surface <br />runoff away from the lower Wolf Creek Fill area and is designed to convey the 100- <br />year, 24-hour storm event. <br />A number of drainage channels at the Seneca II mine will be constructed when the <br />Wolf Creek and Wadge Pits are reclaimed. Designs for the reconstructed channels <br />have not been submitted or approved by the Division in accordance with Rules <br />4.05.3 and 4.05.4. Therefore, the Division deems it appropriate to retain the <br />following stipulation; <br />STIPULATION 33 <br />PRIOR TO PERMANENT CHANNEL RECONSTRUCTION ON ALL <br />RECLAIMED AREAS AT THE SENECA II MINE, THE OPERATOR SHALL <br />SUBMIT DESIGNS ON THE CHANNELS IN ACCORDANCE WITH RULES <br />4.05.3 AND 4.05.4. <br />Seneca Coal Company has permitted stock tanks at the Seneca II Mine. Stock tanks <br />have been constructed in drainages on reclaimed spoils in both the Wadge and Wolf <br />Creek mining azeas. The tanks are temporary to assist in erosion control, as well as <br />provide water for wildlife and livestock. Eighteen stock tanks have been <br />constructed and aze being utilized ~n the reclaimed area at the Seneca II Mine. Six <br />additional stock tanks are proposed to be constructed by the end of mining. The <br />stock tanks will slow the peak runoff of precipitation events and help to minimize <br />erosion in the drainage channels. These small tanks will benefit both livestock <br />i~ <br />