Specifications include, but are not limited to: BORROW EXCAVATION CONCRETE CLASS A3 MISC. AGGR. BASE MATL. TY. I OR II NO. 21A OR 21B The intent of this Contract is to provide for furnishing sufficient labor and equipment, delivering goods and services, and maintaining adequate material on hand to respond to the Department's need for timely completion of the contract work by Task Order in one or more of the Department's Construction Districts. This Contract shall be in accordance with Task Order plans and sketches and the Specifications and provisions herein. The estimated bid quantities are based on existing conditions or quantities historically used in the geographic area of the Contract. Renewable On Call contracts will serve as a cost effective and timely response contracting method when the Department anticipates the need for a variety of goods or services for specific purposes; however, the actual demand is not known and delivery of the goods or services is made when a requirement arises. Work on this Contract is to be performed, completed, and accepted within Task Order time limits and within the Term of the Contract. During the Term of the Contract, the Department will issue Task Orders to the Contractor with a cumulative value will equal or exceed 70 percent of the original value of the Contract, unless the Contract is terminated according to Section 108.08 of the Specifications.