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BOWIE RESOURCES LLC <br />Bowie No. 2 Mine <br />Gob Pile #3 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 on the south edge of Bowie <br />Road and ends where the road crosses ditch J8 -1. The station of the road is 0 +00 at <br />the south edge of Bowie Road and about 5 +20 where the road crosses over ditch J8 -1. <br />The plan and profile of the haul road is presented on the attached drawing. Stationing <br />on the attached map equates to station 4 +40 to 9 +60 on Map 16. <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 plated with six to 12 inches of Class 6 road base. The subgrade and <br />Class 6 road base were placed and compacted. Compaction tests were performed on <br />the subgrade to confirm it reached 95% of the maximum unit dry weight attained in a <br />laboratory compaction tests in accordance with the specifications of ASTM D 698, <br />ASTM D4718 Method A. Compaction tests were performed on the Class 6 road base to <br />confirm it reached 95% of the maximum unit dry weight attained in a laboratory <br />compaction tests in accordance with the specifications of ASTM D 1557, Method C. <br />The compaction specifications shown above were specified by Buckhorn Geotech. <br />Permit application package section 2.05.3(3)(c) contains a lesser compaction <br />specification for haul roads that requires 90% of maximum unit dry weight attained in a <br />laboratory compaction test in accordance with the specifications of ASTM D 698, <br />Method D. <br />The first 50 feet of the haul road is paved. Compaction tests were performed on the <br />pavement by Buckhorn Geotech and achieved the required 92% to 96% of the <br />theoretical maximum density attained in laboratory tests in accordance with Colorado <br />Procedure 51 (CP -51). Compaction test reports are attached. <br />The road from the north side of the bridge over the Fire Mountain Canal to ditch J8 -1 <br />did not require any fill to establish the design grade. This section of road was plated <br />with approximately six inches of Class 6 road base after proof rolling with a 25 ton haul <br />truck confirmed the subgrade was stable. <br />Page 1 of 2 09/19/13 <br />