Rodarte Construction Inc Everett Station Parking Expansion

1 Ii 2 • Before using additives, obtain the Engineer's approval using WSDOT Form 350- ' 3 076 to describe the proposed additive and process. 4 5 5-04.3(3)A Mixing Plant I 6 Item number 5 of the first paragraph is revised to read: 7 8 5. Provide HMA sampling equipment that complies with FOP for AASHTO T 168: 19 10 • Use a mechanical sampling device accepted by the Engineer, or 11 12 • Platforms or devices to enable sampling from the truck transport without entering 13 the truck transport for sampling HMA. 14 15 5-04.3(4) Preparation of Existing Paved Surfaces I 16 The first sentence of the fourth paragraph is revised to read: 17 18 Unless otherwise allowed by the Engineer, use cationic emulsified asphalt CSS-1, CSS-1 h, I 19 or Performance Graded (PG) asphalt for tack coat. 20 21 5-04.3(6) Mixing 22 The first paragraph is revised to read: I23 24 The asphalt supplier shall introduce recycling agent and anti-stripping additive, in the 25 amount designated on the QPL for the mix design, into the asphalt binder prior to shipment I 26 to the asphalt mixing plant. 27 28 The seventh paragraph is revised to read: I 29 30 Upon discharge from the mixer, ensure that the temperature of the HMA does not exceed 31 the optimum mixing temperature shown on the accepted Mix Design Report by more than 32 25°F, or as allowed by the Engineer. When an additive is included in the manufacture of I33 HMA, do not heat the additive (at any stage of production including in binder storage tanks) 34 to a temperature higher than the maximum recommended by the manufacturer of the 35 additive. I 36 37 5-04.3(7) Spreading and Finishing 38 The last row of the table is revised to read: I 39 3A inch 0.25 feet 0.30 feet 40 I 41 5-04.3(8) Aggregate Acceptance Prior to Incorporation in HMA 42 The following new paragraph is inserted after the first paragraph: 43 44 The Contracting Agency's combined aggregate bulk specific gravity (Gsb) blend as shown I 45 on the HMA Mix Design will be used for VMA calculations until the Contractor submits a 46 written request for a Gsb test. The new Gsb will be used in the VMA calculations for HMA 47 from the date the Engineer receives the written request for a Gsb retest. The Contractor I 48 may request aggregate specific gravity (Gsb) testing be performed by the Contracting 49 Agency twice per project. The Gsb blend of the combined stockpiles will be used to I City of Everett Page AM-21 Amendments Everett Station 80 Stall Parking Expansion June 2019 I