Specifications include, but are not limited to: Mobilization & Staging: Mobilization and staging of snow grooming equipment and associated resources near the designated parking spot on the Highway 108 trail system. Costs for mobilization and staging may include groomer hauling, unloading, assembly, and fuel transportation & storage. Any other costs for mobilization and staging must be preapproved in writing by the PM. The maximum amount paid for mobilization and staging is not to exceed $6,000 for the grooming season. Invoices for mobilization and staging costs must be fully itemized with the dates, locations, hours, and service descriptions. Grooming: Grooming services in accordance with the specifications outlined in Exhibit A Attachment 2, Grooming Guidelines. Grooming services are billable based on actual miles groomed, regardless of the number of passes necessary to complete the job properly. Services will be billed on a monthly basis with all dates, locations, trail segments, miles, hours, and service types fully itemized. Commencement: Prior to the commencement of grooming each the season, Contractor shall submit a written request to commence to the PM and GOM. Requests must be accompanied by a summary of conditions present on each of the trail segments. Each summary must include multiple snow depth measurements taken on the corresponding trail segment. When possible, Contractor will include photos showing the snow depth measurement being taken. Absolutely no grooming may occur until approval is granted in writing by the PM or an authorized designee. Requests to commence will neither be accepted nor considered until the minimum snow depth of twelve (12) inches is exceeded. Hazard Removal: Removal of downed trees, limbs, and/or other hazards present on the trail. Hazard removal services may be billed at an hourly rate based on actual time worked. Contractor must document the dates, locations, times, and work hours of hazard removal work. Supporting photographs must be taken and submitted to the PM with the monthly invoice for services.