This contract is for environmental services, including the provision of equipment, supplies, and labor for various projects. The contract has a term of 5 years, with the option to renew for an additional 4 years. The contract includes provisions for payment, invoicing, and insurance, as well as requirements for the contractor to provide a transition plan and cooperate with the County in the event of contract completion or termination. The contract also includes provisions for conflicts of interest, innovative technical approaches, and differing site conditions. The contractor is required to provide a project offer, which includes a proposed method of approach, key personnel, and a list of approved subcontractors. The contract has a firm-fixed price, with a maximum markup fee of 5% for subcontractors.