1400 SEINER DR 2018-01-01 MF Import

� � PORT OF EVERETT W MARINE VIEW DR IMPROVEMENTS 5-04 HOT MIX ASPHALT Delete Section 5-04 in its entirety and replace it with the (ollowing: 5•04 HOT MIX ASPHALT (October 1,1005APWAGSP) CIP NO. 3-0-003-09 PROJECTNO. PD-WM-20006-01 5-04.1 Description This work shall consist of providing and placing one or more IayeR of plant•mixed hot mix 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. HMA shall be composed of asphali binder and mineral materials as may be required, mixed in the proporiions specified to provide a homogeneous, stable, and workable mixlure. HMA Class A, Class B, Class D, Class F, and Class G are designated as leveling or wearing courses. HMA Class E is designated as a pavement base course. With the exception oi HMA Class D, all mixtures are considered dense graded HMA. 5•04.2 Materials Materials shall meet the requirements of the following sections: � Asphalt Binder 9-02.1(4) Cationic Emulsified Asphalt 9-02.1(6) � Anti-Stripping Additive 9-02.4 Aggregates 5•04.3(8)A2 Blending Sand 9-03.8(4) 1 Mineral Filler 9-03.8(5) The coniract documents may establish that the various minerai materials required for the manufacture of HMA will be fumished in whole or in part by the Contracting Agency. If the documents do not establish the fumishing of any of these mineral materials by the Contracting Agency, the Contractor shall be required to furnish such materials in the amounts required ior the designated mix. Mineral materials include coarse and fine aggregates, blending sand, and minerai filler. The Contractor shall have the option of utilizing recycled asphalt pavement (RAP) in the amount up to 20 percent of total aggregate weight in combination with new aggregate in the production of HMA. The RAP may be irom HMA removed under the contract, if any, or old HMA from an existing stockpile. Recycled materials shall not be used in HMA Class D. When aggregates or a source (or the production of aggregates is provided by the Contracting Agency, the approximate percentage of asphalt binder required in the mixture for the particular class of pavement will be set forth in the special provisions. The percentage is based upon a midline gradation mix design for the source provided. The grade of asphalt binder shall be as required by the contract. Prior to the submittal of the mix design, the Contractor shall provide a written designation of the grade of PG asphalt binder to be used. The Contractor may propose the substitution of altemate grades of performance grade (PG) asphalt binder at no cost to the Contracting Agency. The proposal will be approved if the proposed altemate asphalt binder has an average 7-day maximum pavement design Page 8 of 50