Washington State Department of Transportation Requirements and Best Practices for RAP, RAS, and WMA 5-04 Hot Mix Asphalt RAP and RAS material specifications - 9-03.8(3)B WMA - 9-02.5 Mix Design Classification Based on RAP/RAS Content RAP/RAS Classification RAP/RAS Content Low RAP/No RAS 0% ≤ RAP% ≤ 20% and RAS% = 0% High RAP/Any RAS 20% Maximum Amount of Binder Contributed from: RAP RAS 40% minus contribution of binder from RAS 20%

Use of Recycled Asphalt Pavement/Reclaimed Asphalt Shingles RAP/RAS) in Hot Mix Asphalt (HMA): The Contractor shall include a recycled content of [maximum allowable amount: 40% minus contribution of binder from RAS] RAP and [maximum allowable amount: 20%] RAS in it HMA mix design. Contractor shall obtain and submit documentation verifying source and recycled content of material consistent with the Special Provisions Section.