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CITY OF EVERETT WEST MARINE VIEW DRIVE/ALVERSON AND 41 ST ST/GRAND AVE <br />PEDESTRIAN IMPROVEMENTS <br />STATE FUND# HLP-PB15(032) <br />WO #3630 July 25, 2024 <br />72 <br />1 <br />2 If the Contract includes the Bid item Roadway Core the cores shall be obtained by the <br />3 Contractor in the presence of the Engineer on the same day the mix is placed and at <br />4 locations designated by the Engineer. If the Contract does not include the Bid item <br />5 Roadway Core the Contracting Agency will obtain the cores. <br />6 <br />7 For a lot in progress with a CPF less than 0.75, a new lot will begin at the Contractors <br />8 request after the Engineer is satisfied that material conforming to the Specifications can <br />9 be produced. <br />10 <br />11 HMA mixture accepted by commercial evaluation and HMA constructed under conditions <br />12 other than those listed above shall be compacted on the basis of a test point evaluation of <br />13 the compaction train. The test point evaluation shall be performed in accordance with <br />14 instructions from the Engineer. The number of passes with an approved compaction train, <br />15 required to attain the maximum test point density, shall be used on all subsequent paving. <br />16 <br />17 HMA for preleveling shall be thoroughly compacted. HMA that is used for preleveling <br />18 wheel rutting shall be compacted with a pneumatic tire roller unless otherwise approved <br />19 by the Engineer. <br />20 <br />21 Test Results <br />22 For a sublot that has been tested with a nuclear density gauge that did not meet the <br />23 minimum of 91 percent of the reference maximum density in a compaction lot with a CPF <br />24 below 1.00 and thus subject to a price reduction or rejection, the Contractor may request <br />25 that a core be used for determination of the relative density of the sublot. The relative <br />26 density of the core will replace the relative density determined by the nuclear density <br />27 gauge for the sublot and will be used for calculation of the CPF and acceptance of HMA <br />28 compaction lot. <br />29 <br />30 When cores are taken by the Contracting Agency at the request of the Contractor, they <br />31 shall be requested by noon of the next workday after the test results for the sublot have <br />32 been provided or made available to the Contractor. Core locations shall be outside of <br />33 wheel paths and as determined by the Engineer. Traffic control shall be provided by the <br />34 Contractor as requested by the Engineer. Failure by the Contractor to provide the <br />35 requested traffic control will result in forfeiture of the request for cores. When the CPF for <br />36 the lot based on the results of the HMA cores is less than 1.00, the cost for the coring will <br />37 be deducted from any monies due or that may become due the Contractor under the <br />38 Contract at the rate of $200 per core and the Contractor shall pay for the cost of the traffic <br />39 control. <br />40 <br />41 5-04.3(10)A HMA Compaction General Compaction Requirements <br />42 Compaction shall take place when the mixture is in the proper condition so that no undue <br />43 displacement, cracking, or shoving occurs. Areas inaccessible to large compaction <br />44 equipment shall be compacted by other mechanical means. Any HMA that becomes <br />45 loose, broken, contaminated, shows an excess or deficiency of asphalt, or is in any way <br />46 defective, shall be removed and replaced with new hot mix that shall be immediately <br />47 compacted to conform to the surrounding area.