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I DIVISION 5—SURFACE TREATMENTS AND PAVEMENTS 5-04 HOT MIX ASPHALT 5-04.3 Construction Requirements 5-04.3(7) Preparation of Aggregates Delete 5-04.3(7)A and substitute the following: 5-04.3(7)A Mix Design 5-04.3(7)A1 General Prior to the production of HMA, the Contractor shall determine a design aggregate structure and asphalt binder content in accordance with WSDOT Standard Operating Procedure 732. Once the design aggregate structure and asphalt binder content have been determined, the Contractor shall submit the HMA mix design on DOT form 350- 042 demonstrating the design meets the requirements of Sections 9-03.8(2) and 9- 03.8(6). HMA accepted by nonstatistical evaluation requires a mix design verification. For HMA accepted by commercial evaluation only the first page of DOT form 350-042 and the percent of asphalt binder is required. In no case shall the paving begin before the determination of anti-strip requirements has been made. Anti-strip requirements will be determined by: a. Testing by WSDOT in accordance with TM 718. b. Testing by Contractor in accordance with WSDOT TM 718. c. Historical aggregate source ant-strip use provided by WDOT. The mix design will be the initial Job Mix Formula (JMF) for the HMA being produced. Any additional adjustments to the JMF will require the approval of the Project Engineer and may be made per Section 9-03.8(7). 5-04.3(7)A2 Mix Design Verification Verification shall be accomplished by one of the following processes: a. Submit samples to WSDOT State Materials Lab for WSDOT verification I testing in accordance with WSDOT Standard Specifications. b. The contracting agency will perform tests to verify the mix design in accordance with the Field Verification Testing Process. c. Reference a mix design that has been previously verified by the Field Verification Testing Process or verified by WSDOT State Materials Lab on a previous project. d. Perform Field Verification Testing on a sample of HMA provided by the Contractor prior to paving. Mix design verification is valid for one year from the date of verification. At the IP discretion of the Engineer, agencies may accept mix designs verified beyond the verification year with certification from the Contractor that the materials and sources are the same as those shown on the original mix design. 5-04.3(7)A3 Field Verification Testing Process The City will collect three Production Samples of HMA on the first day of paving per AASHTO T 168 sampling procedures. a. The City will test one Production Sample in accordance with 5-04.3(8)A for field verification per the requirements of 9-03.8(7). b. If the test results from the first Production Sample are within the tolerances of 9-03.8(7), the mix design will be considered verified and the test results will be used as acceptance sample number one. HAYES STREET REGULATOR February,2017 AND CSO CONTROLS (SRO1, SRO2, AND SRO3) WO No—UP3398-31 SP - 151111