Specifications include, but are not limited to: A contract to provide goods or services on an as-needed basis. A. Curbing Mix 1. 6.5 Sack Cementitious Material 2. Aggregates: 90% Sand and 10% 3/8” Pea Gravel (By Weight) 3. Slump: 0“ to 2” or as Requested by King County. B. Roadway Mix – Rapid-Set Concrete (3000 psi, 24 Hrs.) 1. Cementitious Material: As required to achieve compressive strength of 3,000 psi in 24 Hours and 5,000 psi in 28 Days. 2. Slump: 4” maximum 3. Maximum Nominal Aggregate Size: 1½” or as Requested by King County. 4. Air Content: 4.5% to 7.5% C. Roadway Mix – Rapid-Set Concrete (4,000 psi, 72 Hrs.) 1. Cementitious Material: As required to achieve compressive strength of 3,000 psi in 72 Hours and 6,000 psi in 28 Days. 2. Slump: 4” maximum 3. Maximum Nominal Aggregate Size: 1½” or as Requested by King County. 4. Air Content: 4.5% to 7.5%