Always Active Services LLC of Seattle 7/21/2022

I 1 I 2 3 DIVISION5.GR5 4 Division 5 I5 6 Surface Treatments and Pavements 7 COE 5-04.docx I 8 5-04.3 Construction Requirements 9 10 5-04.3(7)A Mix Design 11 12 (March 10, 2010 APWA GSP) 13 Delete this section and replace it with the following; 14 I15 1. General. Prior to the production of HMA, the Contractor shall determine a design 16 aggregate structure and asphalt binder content in accordance with WSDOT Standard 17 Operating Procedure 732. Once the design aggregate structure and asphalt binder I 18 content have been determined, the Contractor shall submit the HMA mix design on 19 DOT form 350-042 demonstrating the design meets the requirements of Sections 9- 20 03.8(2) and 9-03.8(6). HMA accepted by nonstatistical evaluation requires a mix I 21 design verification. For HMA accepted by commercial evaluation only the first page 22 of DOT form 350-042 and the percent of asphalt binder is required. In no case shall 23 the paving begin before the determination of anti-strip requirements has been made. I24 25 Anti-strip requirements will be determined by: 26 a. Testing by WSDOT in accordance with TM 718. 27 b. Testing by Contractor in accordance with WSDOT TM 718. I28 29 c. Historical aggregate source ant-strip use provided by WSDOT. 30 The mix design will be the initial Job Mix Formula (JMF)for the HMA being produced. 1 31 Any additional adjustments to the JMF will require the approval of the Project 32 Engineer and may be made per Section 9-03.8(7). 33 I 34 2. Mix Design Verification. Verification shall be accomplished by one of the following 35 processes: 36 II 37 a. Submit samples to WSDOT State Materials Lab for WSDOT verification 38 testing in accordance with WSDOT Standard Specifications. 39 b. The contracting agency will perform tests to verify the mix design in 40 accordance with the Field Verification Testing Process. I 41 c. Reference a mix design that has been previously verified by the Field 42 Verification Testing Process or verified by WSDOT State Materials Lab 43 on a previous project. I44 d. Perform Field Verification Testing on a sample of HMA provided by the 45 Contractor prior to paving. 46 I 47 Mix design verification is valid for one year from the date of verification. At the discretion 48 of the Engineer, agencies may accept mix designs verified beyond the verification year 49 with certification from the Contractor that the materials and sources are the same as those 50 shown on the original mix design. INTERURBAN TRAIL TO YMCA PEDESTRIAN IMPROVEMENTS SPECIAL PROVISIONS 111 WORK ORDER 3749 Page SP45 of SP68 MAY 2,2022 I