Specifications include, but are not limited to: The purpose of this Invitation to Bid is to establish a Contract to provide and deliver glass beads Type 1 and Type P conforming to AASHTO Standard Specifications for Glass Beads used in Traffic Paints, Designation M 247. Beads shall have been tested and approved by the Washington State Department of Transportation Material Laboratory and identified on their Qualified Products List. This specification covers glass beads to be dropped or sprayed on pavement markings. i.e., waterborne and solvent traffic paint so as to produce a reflectorized pavement marking. The contractor shall validate glass beads do not exceed the heavy metals listed in the Concentration Limits table below. The contractor shall validate their Concentration Limits using established method EPA’s SW846 6010B. Testing results shall be delivered with each shipment and will be compared to random testing results as stated in Section 6.2, Paragraph B. Glass bead elements exceeding the following established total concentration limits or any constituent in excess of the following established total concentration limit as tested in accordance with the listed test methodology will not be accepted.