Specifications include, but are not limited to: As a condition of this Request all responding Bidders are responsible for supervision, labor, transportation, all necessary equipment, chemicals, soil, fertilizer, seed and consumables to meet the requirements of this bid. The successful Bidder shall be fully insured and properly licensed to perform services on York County property. The successful Bidder, under no circumstances, shall sub-contract, or utilize individuals not covered under their insurance policy. The successful Bidder shall keep all work sites clean of debris. The Bidder shall remove all tools and equipment promptly after use. No equipment, or materials, shall be left permanently at any site. In no instance will combustibles be left, or left unattended, on York County property.