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1 <br /> 1 5-04.2(2)B Using Warm Mix Asphalt Processes <br /> 2 This section, including title, is revised to read: <br /> 3 <br /> • <br /> 4 5-04.2(2)B Using HMA Additives <br /> 5 The Contractor may, at the Contractor's discretion, elect to use additives that reduce the <br /> 6 optimum mixing temperature or serve as a compaction aid for producing HMA. Additives <br /> 7 include organic additives, chemical additives and foaming processes. The use of Additives <br /> 8 is subject to the following: <br /> 9 <br /> 10 • Do not use additives that reduce the mixing temperature in accordance with <br /> 11 Section 5-04.3(6) in the production of High RAP/Any RAS mixtures. <br /> 12 <br /> 13 • Before using additives, obtain the Engineer's approval using WSDOT Form 3501 <br /> - <br /> 14 076 to describe the proposed additive and process. <br /> 15 <br /> 16 5-04.3(3)A Mixing Plant <br /> 17 In item number 5 of the first paragraph, "WSDOT T 168" is revised to read "FOP for AASHTO T <br /> 18 168". <br /> 19 <br /> 20 5-04.3(4) Preparation of Existing Paved Surfaces <br /> 21 The first sentence of the fourth paragraph is revised to read: <br /> 22 <br /> 23 Unless otherwise allowed by the Engineer, use cationic emulsified asphalt CSS-1, CSS-1 h, <br /> 24 or Performance Graded (PG) asphalt for tack coat. <br /> 25 <br /> 26 5-04.3(6) Mixing <br /> 27 The first paragraph is revised to read: <br /> 28 <br /> 29 The asphalt supplier shall introduce recycling agent and anti-stripping additive, in the <br /> 30 amount designated on the QPL for the mix design, into the asphalt binder prior to shipment <br /> 31 to the asphalt mixing plant. <br /> 32 1 33 The seventh paragraph is revised to read: <br /> 34 <br /> 35 Upon discharge from the mixer, ensure that the temperature of the HMA does not exceed <br /> 36 the optimum mixing temperature shown on the accepted Mix Design Report by more than <br /> 37 25°F, or as allowed by the Engineer. When an additive is included in the manufacture of <br /> 38 HMA, do not heat the additive (at any stage of production including in binder storage tanks) <br /> 39 to a temperature higher than the maximum recommended by the manufacturer of the <br /> 40 additive. <br /> 41 <br /> 42 5-04.3(7) Spreading and Finishing <br /> 43 The last row of the table is revised to read: <br /> 44 <br /> /R inch 0.25 feet I 0.30 feet I, <br /> 45 <br /> 46 5-04.3(8) Aggregate Acceptance Prior to Incorporation in HMA <br /> 47 The following new paragraph is inserted after the first paragraph: <br /> 48 <br /> I <br /> City of Everett Page AM-18 Amendments <br /> Everett Downtown Streetscape Improvement March 22, 2019 <br />