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III IIIIIIIIIIIIIIII 999 Powderhorn Coal Company North Portal Haul Road No. 5 Certification This haul road certification applies to a 1,200 foot long section of Haul Road No. 5 which extends from the east side of the Highline Canal bridge to the intersection of Haul Roads Nos. 4 and 5. (Reference Exhibit 8A) This road segment was previously designated a public road and therefore was not certified. The Highline Canal bridge and Haul Road segment are primarily used by Powderhorn Coal Company and Public Service Company. Powderhorn Coal Company's main use is for coal and gob haul trucks. Public Service Company's main use is for ash haul trucks. Maintenance of this road segment is primarily performed by Powderhorn Coal Company with occasional assistance from Public Service Company. This road segment was not constructed by Powderhom Coal Company. It may have been upgraded by Powderhorn Coal Company or a prior operator during the late 1970's or early 1980's. The road traverses a relatively flat area so there are no significant cut or fill slopes. Drainage from this road segment is not contained in a sediment pond. The road is surfaced with gravel. Current observations indicate the road has been constructed to be sufficiently durable for the volume, weight and speed for traffic using the road. Rule 4.03.1(4)(e) addresses design parameters for bridges and culverts. Generally the design criteria for a bridge is to be able to pass a particular design flow. Flow in the Highline Canal is regulated. Large precipitation events do not significantly effect flow in the canal. Therefore, Rule 4.03.1(4)(e) does not apply to the Highline Canal bridge. I James E. Stover, P.E., have inspected the above noted section of Haul Road No. 5 and evaluated it with respect to DMG Rule 4.03.1. I hereby certify that to the best of my knowledge and belief, this road segment meets the applicable performance standards and design criteria. *s same ~~ PQ 0 ~R f .g' r.~~ ~~~P'`~ F Sri F9F'- iv~~ ~~~+ ~f,,~•t;. 9/20/99 _:James E. Sto~ler! Date No. 19~ ;YAL~~~v'