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CITY OF EVERETT SPECIAL PROVISIONS At or prior to the preconstruction meeting, the contractor shall provide one of the following mix design verification certifications for Contracting Agency review; 1. The proposed mix design indicated on a WSDOT mix design/anti- strip report that is within one year of the approval date 2. The proposed HMA mix design submittal (Form 350-042) with the seal and certification (stamp & signature) of a valid licensed Washington State Professional Engineer. 3. The proposed mix design by a qualified City or County laboratory mix design report that is within one year of the approval date. • The mix design will be performed by a lab accredited by a national authority such as Laboratory Accreditation Bureau, L-A-B for Construction Materials Testing, The Construction Materials Engineering Council (CMEC's) ISO 17025 or AASHTO Accreditation Program (AAP) and shall supply evidence of participation in the AASHTO Material Reference Laboratory (AMRL) program. At the discretion of the Engineer, agencies may accept mix designs verified beyond the one-year verification period with a certification from the Contractor that the materials and sources are the same as those shown on the original mix design. Evaluation of anti-strip additives are to be provided as part of the mix design acceptance criteria. Acceptable anti-strip evaluations include 1.) a WSDOT validated mix design showing the validated anti-strip additive and dosage 2.) an historic anti-strip determination from WSDOT not greater than two (2) calendar years old or 3.) a passing TSR test at the anti-strip dosage proposed by the Contractor. No paving shall begin prior to Contracting Agency approval of the Contractor provided 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 40. the test results will be used as acceptance sample number one. c. If the test results from the first Production Sample are outside the tolerances of 9-03.8(7), the other two samples will be tested and the results of all three tests will be used for acceptance in accordance with 5-04.5(1) and will be used in the calculation of the CPF the maximum CPF shall be 1.00. Prior to the first day of paving, six Ignition Furnace Calibration Samples shall be obtained to calibrate the Ignition Furnaces used for acceptance testing of the HMA. Calibration samples shall be provided by the Contractor when directed by the Engineer. Calibration samples shall be prepared in accordance with WSDOT SOP 728. Jackson Park Area Stormwater Separation September 2020 WO No.—UP3703 Division 5—SURFACE TREATMENTS AND PAVEMENTS SP -146