Thomco Construction Inc. 6/14/2021

I CITY OF EVERETT SPECIAL PROVISIONS I IDIVISION 5 — SURFACE TREATMENTS AND PAVEMENTS 5-04 HOT MIX ASPHALT I Delete 5-04 and substitute the following: 5-04.1 Description Work shall consist of providing and placing one or more layers of plant-mixed hot mix I asphalt (HMA) on a prepared foundation or base in accordance with these Specifications and the lines, grades, thicknesses, and typical cross-sections shown in the Plans. The manufacture of HMA may include warm mix asphalt (WMA) processes in accordance with I these Specifications. WMA processes include organic additives, chemical additives, and foaming. Provide HMA composed of asphalt binder and mineral materials as may be required, mixed I in the proportions specified to provide a homogeneous, stable, and workable mixture. 5-04.2 Materials Provide materials meeting the requirements of the following sections: I Asphalt Binder 9-02.1(4) Standard Specifications Cationic Emulsified Asphalt 9-02.1(6) Standard Specifications Anti-Stripping Additive 9-02.4 Standard Specifications I HMA Additive 9-02.5 Standard Specifications Aggregates 9-03.8 Standard Specifications Recycled Asphalt Pavement 9-03.8(3)B Standard Specifications Mineral Filler 9-03.8(5) Standard Specifications I Recycled Material 9-03.21 Standard Specifications Portland Cement 9-01 Standard Specifications Sand 9-03.1(2) Standard Specifications I (As noted in 5-04.3(5)C for crack sealing) Joint Sealant 9-04.2 Standard Specifications Foam Backer Rod 9-04.2(3)A Standard Specifications IThe Contractor may use up to 20 percent RAP by total weight of HMA with no additional sampling or testing of the RAP. Sample and test the RAP at a frequency of one sample for I every 1,000 tons produced and not less than two samples per project. Report the asphalt content and gradation test data to the City when submitting the mix design for approval on the QPL. Include the RAP as part of the mix design as defined in these Specifications. I Provide the grade of asphalt binder as required by the Contract. Blending of asphalt binder from different sources is not permitted. The Contractor may only use warm mix asphalt (WMA) processes in the production of HMA with 20 percent or less RAP by total weight of HMA. Submit to the Engineer for approval Ithe process that is proposed and how it will be used in the manufacture of HMA. For production of aggregates comply with the requirements of Section 3-01. I For preparation of stockpile site, the stockpiling of aggregates, and the removal of aggregates from stockpiles comply with the requirements of Section 3-02. 5-04.2(1) How to Get an HMA Mix Design on the QPL I If the contractor wishes to submit a mix design for inclusion in the Qualified Products List (QPL), please follow the WSDOT process outlined in Standard Specification 5- 04.2(1). IWater Main Replacement"V" Division 5—SURFACE TREATMENTS April,2021 WO No.—UP3730 AND PAVEMENTS SP-145