Laserfiche WebLink
BOWIE RESOURCES LLC <br />Bowie No. 2 Mine <br />Gob Pile Haul Road Certification <br />The haul road for the trucks transporting coal mine waste to gob pile number 3 begins <br />at the refuse truck dump and ends where the road crosses the 24 inch diameter culvert <br />located in upper diversion ditch J8 -1. Previous haul road certifications have been <br />performed for the haul road between the refuse truck dump and Bowie Road. <br />Therefore, this haul road certification begins at a point of the south edge of Bowie Road <br />and ends where the road crosses ditch J8 -1. The station of the road is 0 +00 at the <br />south edge of Bowie Road and about 5 +20 where the road crosses over ditch J8 -1. The <br />plan and profile of the haul road is presented on the attached drawing. <br />In accordance with Rule 4.03.1(1)(d)(i), this certification has been prepared to certify <br />the gob pile haul road has been constructed as designed and in accordance with the <br />approved plan and the regulations. <br />The haul road from the south side of Bowie Road to near the bridge over the Fire <br />Mountain Canal required a few feet of fill to establish the deign road grade. The <br />subgrade was placed and compacted. The subgrade was plated with six to 12 inches of <br />Class 6 road base. The subgrade and Class 6 road base were placed and compacted. <br />Compaction tests were performed to confirm the subgrade and road base each reached <br />90% of the maximum unit dry weight attained in a laboratory compaction tests in <br />accordance with the specifications of ASTM D 698, Method D. <br />The first 50 feet of the haul road is paved. The pavement was placed and compacted <br />and achieved 90% of the maximum unit dry weight attained in a laboratory compaction <br />tests in accordance with the specifications of ASTM D 698, Method D. <br />Compaction tests were performed by Buckhorn Geotech. Compaction test reports are <br />attached. <br />The road from the north side of the bridge over the Fire Mountain Canal to ditch J8 -1 <br />did not require and fill to establish the design grade. This section of road was plated <br />with approximately six inches of Class 6 road base. <br />The permitted configuration of the haul road is a 30 -foot wide roadway. The bridge <br />over the Fire Mountain Canal narrows the road surface to about 20 feet. MSHA safety <br />berms will be added if required. The haul road was constructed during October and <br />November 2012. <br />Cut and fill slopes conform to the requirements of Rule 4.03.1(3)(d)(i) and <br />4.03.1(3)(e)(ix). The grade of the haul road meets the requirements of Rule <br />Page 1 of 2 <br />