Ariston Pacific, Inc. 5/9/2016 - Laserfiche WebLink

1 1 I 2 At the Contractor's request the Engineer may approve paving without an MTDN; the 3 Engineer will determine if an equitable adjustment in cost or time is due. 4 5 In the last sentence of the second paragraph, "Project Engineer" is revised to read 1 6 "Engineer". 7 8 5-04.3(5)A Preparation of Existing Surfaces 1 9 The first sentence of the last paragraph is revised to read: 10 11 Unless otherwise approved by the Engineer, the tack coat shall be CSS-1 or CSS-1h I 12 emulsified asphalt. 13 14 5-04.3(7) Preparation of Aggregates I 15 This section is revised to read: 16 17 The aggregates, RAP and RAS shall be stockpiled according to the requirements of 18 Section 3-02. Sufficient storage space shall be provided for each size of aggregate, 19 RAP and RAS. The Contractor may uniformly blend fine aggregate or RAP with the 20 RAS as a method of preventing the agglomeration of RAS particles. The aggregates, I 21 RAP and RAS shall be removed from stockpile(s) in a manner to ensure minimal 22 segregation when being moved to the HMA plant for processing into the final mixture. 23 Different aggregate sizes shall be kept separated until they have been delivered to the 24 HMA plant. 1 25 26 5-04.3(7)A1 General 27 This section is revised to read: I 28 29 An approved mix design, listed on the Qualified Products List (QPL), is required for all 30 HMA paving. The Contractor shall develop a mix design prior to the initial production of I 31 HMA and no more than 3 months prior to submitting for QPL evaluation. The mix design 32 shall be developed in accordance with WSDOT Standard Operating Procedure 732 and 33 meet the requirements of Sections 9-03.8(2) and 9-03.8(6). I 34 35 Mix designs shall be submitted by the Contractor to the WSDOT State Materials 36 Laboratory on WSDOT Form 350-042EF. If the mix design is approved it will be listed I 37 on the QPL for up to 24 consecutive months. Mix designs not listed on the QPL or past 38 the 24 month approved period shall not be used. After a mix design has been on the 39 QPL for 12 months the listing will be extended provided the Contractor submits a 40 certification letter to the Qualified Products Engineer verifying that the aggregate and I41 asphalt binder have not changed. The Contractor may submit the certification one 42 month prior to expiration of the mix design approval. Within 7 calendar days of receipt of 43 the Contractor's certification the QPL will be updated. The maximum duration for 1 44 approval of a mix design and listing on the QPL will be 24 months from the date of initial 45 approval or as approved by the Engineer. 46 I 47 Changes to the job mix formula of a mix design may require the development of a new 48 mix design and resubmittal for QPL approval. 49 50 Changes to aggregate that may require a new mix design include the source of material 51 or a change in the percentage of material from a stockpile greater than 5 percent. I I AMENDMENTS TO THE 2014 STANDARD SPECIFICATIONS BOOK Revised: 8/3/15