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BOWIE RESOURCES LIMITED -BOWIE NO. 1 MINE <br />WEST MINE SEDIMENT POND <br />CERTIFICATION <br />On February 4, 1987, Matthew S. Sakurada, PE, certified the West Mine Pond. Mr. Sakurada's <br />certification statement indicates the design of the pond was completed by Graeme Major, P.E. <br />of Golder Associates. Calculations were completed by Graeme Major on the stability, spillway <br />capacity and volume of the dam as required by CMLRD rules. <br />Reclamation of the west mine commenced during the 4`"quarter 2000. A contractor has been <br />pushing material from the west mine fill up into the portal cut. Sometime during the first quarter <br />2001, the contractor pushed some material into the west mine sediment pond. During a <br />routine inspection of the west mine, the DMG noticed the problem with the sediment pond. <br />On March 6, 2001, the DMG issued a Notice of Violation to Bowie Resources Limited for failure <br />to maintain the west portal sedimentation pond in accordance with designs that are approved <br />and required to assure adequate capacity. Abatement steps were to excavate the east side of <br />the pond to design specifications and re-certify the sediment pond as-built and submit a re- <br />certification statement to the Division. <br />Volume 6 of the permit (C-81-038) contains a design drawing for the west mine pond. It is a <br />Golder Associates drawing, Runoff Diversions, Sedimentation Pond, Sheet Number 6 of 10. <br />No specific design capacity was located in the permit. Therefore, the pond's design capacity <br />was calculated from the pond drawing, sheet 6 of 10. The as-built capacity was calculated from <br />a survey of the pond performed by Cragg Surveying on March 16, 2001. The pond design and <br />as-built capacities are as follows: <br />West Mine Sediment Pond <br /> Design As-Built <br />Sediment A-F 0.8 1.0 <br />Water A-F 0.3 0.3 <br />Total A-F 1.1 1.3 <br />I hereby certify that to the best of my knowledge and belief, the west mine sediment pond has <br />been restored to~Lsor~ al design capacity. An as-built drawing of the pond and four pictures <br />are attachedl~lb _r6i~i~.Gertification statement. <br />:~19 ~ 3 ZZ o1 <br />';James E. StQV~° ate <br />•OOf[3glorado~i'~Ssional Engineer <br />•.1~e~tratiat~l9o. 19230 <br />