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I <br /> CITY OF EVERETT SPECIAL PROVISIONS <br /> 5-04.2(1)A Vacant <br /> 5-04.2(2) Mix Design —Obtaining Project Approval <br /> Do NOT begin paving prior to the approval of the mix design by the Engineer. <br /> Nonstatistical evaluation will be used for all HMA not designated as Commercial <br /> HMA in the Contract Documents. <br /> Commercial evaluation will be used for Commercial HMA and for other classes of <br /> HMA in the following applications: sidewalks, road approaches, paths, trails, and <br /> pavement repair. Obtain approval from Project Engineer for other nonstructural <br /> applications of HMA accepted by commercial evaluation. Sampling and testing of <br /> HMA accepted by commercial evaluation will be at the option of the Project <br /> Engineer. The Proposal quantity of HMA that is accepted by commercial <br /> evaluation will be excluded from the quantities used in the determination of <br /> nonstatistical evaluation. <br /> Nonstatistical Mix Design. Provide fifteen days prior to the first day of paving <br /> one of the following mix design verification certifications for City review; <br /> a. The WSDOT Mix Design Evaluation Report from the current WSDOT <br /> QPL, or one of the mix design verification certifications listed below. <br /> b. The proposed HMA mix design on WSDOT Form 350-042 with the seal <br /> and certification (stamp & signature) of a valid licensed Washington State <br /> Professional Engineer. <br /> c. The Mix Design Report for the proposed HMA mix design developed by a <br /> qualified City or County laboratory that is within one year of the approval <br /> date.** <br /> **The mix design shall be performed by a lab accredited by a national <br /> authority such as Laboratory Accreditation Bureau, L-A-B for Construction <br /> Materials Testing, The Construction Materials Engineering Council (CMEC's) <br /> ISO 17025 or AASHTO Accreditation Program (AAP) and shall supply <br /> evidence of participation in the AASHTO: resource proficiency sample <br /> program. <br /> Mix designs for HMA accepted by Nonstatistical evaluation shall; <br /> a. Have the aggregate structure and asphalt binder content determined in <br /> accordance with WSDOT Standard Operating Procedure 732 and meet <br /> the requirements of Sections 9-03.8(2), except that Hamburg testing for <br /> ruts and stripping are at the discretion of the Engineer, and 9-03.8(6). <br /> b. Have anti-strip requirements, if any, for the proposed mix design <br /> determined in accordance with AASHTO T 283 or T 324, or based on <br /> historic anti-strip and aggregate source compatibility from previous <br /> WSDOT lab testing. <br /> At the discretion of the Engineer, City may accept verified mix designs older than <br /> 12 months from the original verification date with a certification from the <br /> Contractor that the materials and sources are the same as those shown on the <br /> original mix design. <br /> Commercial Evaluation: Approval of a mix design for"Commercial Evaluation" will <br /> be based on a review of the Contractor's submittal of WSDOT Form 350-042 (For <br /> commercial mixes, AASHTO T 324 evaluation is not required) or a Mix Design <br /> from the current WSDOT QPL or from one of the processes allowed by this <br /> section. Testing of the HMA by the City for mix design approval is not required. <br /> Water Main Replacement"V" Division 5—SURFACE TREATMENTS April,2021 <br /> WO No.—UP3730 AND PAVEMENTS <br /> SP-146 <br />