Specifications include, but are not limited to:The purpose of this Request for Proposal is to solicit sealed proposals to establish a contract or contracts through competitive negotiation for the provision of engineering services including but not limited to mechanical, electrical, plumbing, acoustical, civil, and structural engineering services for the County of Fairfax, Virginia. Provide consulting services, including construction cost estimates, life cycle costing, and/or cost benefit analysis of proposed projects. Explore various service provision alternatives and provide the most cost effective project proposals that will cause minimum disruption at a project facility. Gather and assemble all necessary information to properly document the existing conditions and requirements each design and project, including but not limited to environmental, structural, mechanical, and electrical data. Prepare relevant drawings of the work prior to modifications and in the absence of existing facility drawings. Objectively investigate conditions related to materials, products, systems, equipment, structures, or components that fail or do not operate/function as intended. Evaluate Americans with Disabilities Act (ADA) compliance mandates.