Specifications include, but are not limited to: 2.1 The Independent Contractor shall provide professional geotechnical, materials testing and inspection services to the County during the term of the Agreement, when and as requested by the County for specific projects. The County reserves the right to have multiple Independent Contractors under contract to select from to provide such services. 2.2 The Independent Contractor shall prepare, upon request from the County, a Scope of Work for a given project. The Scope of Work shall include estimated number of staff hours by position/discipline for said project as well as fees for anticipated tests. 2.3 A separate Purchase Order must be issued for each project before the commencement of any work by the Independent Contractor. A Purchase Order will reference the detailed Scope of Work and amount of compensation. 2.3.1 Change orders may be approved if they are based on conditions that are not reasonably foreseeable and only if there is strict and complete compliance with County procedures.