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4.3 APPENDIX C 9113 guidelines and Class D-Mountainous Rio Blanco County Road standards. For the Proposed Action (125,1100 TPY) and 500,000 TPY alternatives, access road upgrading shall be constructed and maintained in accordance with BLM 9113 guidelines and Class C-Mountainous Rio Blanco County Road standards. The designated operator/lessee shall regularly maintain the road in a safe, usable condition. A regular maintenance program shall include, but not be limited to, blading, crowning, ditching, culvert installation, drainage installation, surfacing, and patrolling. The designated operator/lessee shall post signs, visible within line of sight, indicating location of the underground water pipeline and electric cable, providing name, address, and telephone number of a responsible contact person. All pipelines adjacent to or crossing access roads shall either be buried with a minimum o[ 4 to 5 feet of cover in alluvial areas and a minimum of 3 feet of cover in rocky areas, or they will otherwise be protected from road maintenance and construction activity. Culverts and/or other measures may be necessary to control surface water runoff from the access road and adjacent areas so as not to impede natural drainage or create erosional hazards. Placement and construction is subject to direction andlor approval by the authorized officer. Operator shall paint all permanent structures (on site for a period longer than 90 days after construction) a Flat, noncontrasting color harmonious with the adjacent landscape. Exceptions to this requirement are small structures that are not readily visible from a distance of approximately I/4 mile such as wire and small pipe or structures which, because of OSHA requirements, require safety coloration. Specific colors appropriate for the various landscapes are Cypress Gray, 11-M-38, or equivalent. 4.3-8 4 U.6. GOV ERNMENT PRINTING OFFIGE:IplT-TIYGE6I~W lp