Specifications include, but are not limited to: 1.1.1 This document constitutes a request for sealed proposals from prospective vendors for the development of a Qualified Vendors List (QVL) for the purchase of aggregate surfacing material and hauling services on an as needed, if needed basis for various Missouri state agencies located throughout the state in accordance with the requirements and provisions stated herein. 1.1.2 Because aggregate surfacing material and hauling services pricing has become volatile due to current market conditions, the State of Missouri wishes to establish contracts with qualified suppliers of aggregate surfacing material and hauling services. At the time the state agency needs to make an actual purchase, then-current aggregate surfacing material and hauling services pricing will be requested of all contractors, and the state agency will award the purchase to the “lowest and best” vendor at the time.