2008-023 - Laserfiche WebLink

Home Browse Search

2008-023 (f) Haul routes or haul route segments shall be paved if the anticipated project haul truck traffic from the proposed mine and approved mines sharing the same haul route segment(s) exceed an average of 750 truck trip ends per day. (Truck trip ends are one -directional. For example, one truck entering the mine = 1 trip end; the same truck leaving the mine = a 2°d trip end.) Applicants may enter into a developers agreement to equitably share or recoup paving costs. 1. Paved haul routes shall meet the following specifications: a. Minimum pavement width shall be 24 feet. b. Pavement thickness base and sub -base depths shall meet county thoroughfare and truck route specifications, including ESAL (equivalent single axle loads) and pavement strength co-efficients. (g) The county's adopted level of service (LOS) for the project haul route and intersections significantly impacted by project truck traffic shall be evaluated using passenger car equivalents (PCE's) for anticipated haul truck traffic based on Institute of Transportation Engineer's GTE) standards for PCEs. (For example,.a PCE of 2.3 passenger cars per haul truck would be used to evaluate the LOS for the project haul route and intersections impacted by the project.) Such evaluation shall use average daily haul truck traffic plus a 15% (fifteen percent) peaking factor. Where a haul route segment(s) is shared by more than one mining operation, haul truck traffic from all the mining operations shall be used in the LOS evaluation. (h) To provide gaps in haul truck traffic on haul routes and prevent significant haul truck back-ups at haul route/major road intersections, the following truck frequency standards shall be satisfied: 1. A mining operator shall limit the frequency of haul truck trips to and from his mining operation on two-lane roads to no more than 120 trip ends per hour, with trips ends as defined in Section 4(f) above. This frequency standard may be exceeded for delivery of materials to special or large projects if the operator first obtains approval from the Public Works Director of a maintenance of traffic plan. Such plan shall include a coordinated hauling schedule if a shared haul route is used and method of maintaining acceptable traffic flow to provide "gaps" for non -project traffic along the haul route. Said plan may also require additional improvements to or security for maintaining the haul route, and may require coordination with other mining operators. 2. Along a two-lane haul route segment, cumulative haul truck trips shall not exceed 240 trip ends per hour, with trip ends as defined in Section 4(f) above. 3. To aid the county in monitoring haul truck trip frequency, applicants shall provide haul truck log information to the Public Works Director or his designee, upon request. Double Underline Text: Non Workshop Changes Bold Underline: Additions to Ordinance Strike through: Deleted "Text from Existing Ordinance 1=:ACommunity Development \Users\CurDevAORDINANCE\2008\2008- 934 Excavation(aflerl2-19-08).RTf 13