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2025 FEDERAL OVERLAY, BROADWAY – CALIFORNIA ST TO 18TH ST SPECIAL PROVISIONS <br />FEDERAL AID# STBGUL-2715(012); COE PW# 3841 SP-83 May 6, 2025 <br /> <br />If the Contract includes the Bid item “Roadway Core”, the cores shall be obtained by the 1 <br />Contractor in the presence of the Engineer on the same day the mix is placed and at 2 <br />locations designated by the Engineer. If the Contract does not include the Bid item 3 <br />“Roadway Core”, the Contracting Agency will obtain the cores. 4 <br /> 5 <br />For a lot in progress with a CPF less than 0.75, a new lot will begin at the Contractor’s 6 <br />request after the Engineer is satisfied that material conforming to the Specifications can 7 <br />be produced. 8 <br /> 9 <br />HMA mixture accepted by commercial evaluation and HMA constructed under conditions 10 <br />other than those listed above shall be compacted on the basis of a test point evaluation 11 <br />of the compaction train. The test point evaluation shall be performed in accordance with 12 <br />instructions from the Engineer. The number of passes with an approved compaction 13 <br />train, required to attain the maximum test point density, shall be used on all subsequent 14 <br />paving. 15 <br /> 16 <br />HMA for preleveling shall be thoroughly compacted. HMA that is used for preleveling 17 <br />wheel rutting shall be compacted with a pneumatic tire roller unless otherwise approved 18 <br />by the Engineer. 19 <br /> 20 <br />Test Results 21 <br />For a sublot that has been tested with a nuclear density gauge that did not meet the 22 <br />minimum of 92 percent of the reference maximum density in a compaction lot with a CPF 23 <br />below 1.00 and thus subject to a price reduction or rejection, the Contractor may request 24 <br />that a core be used for determination of the relative density of the sublot. The relative 25 <br />density of the core will replace the relative density determined by the nuclear density 26 <br />gauge for the sublot and will be used for calculation of the CPF and acceptance of HMA 27 <br />compaction lot. 28 <br /> 29 <br />When cores are taken by the Contracting Agency at the request of the Contractor, they 30 <br />shall be requested by noon of the next workday after the test results for the sublot have 31 <br />been provided or made available to the Contractor. Core locations shall be outside of 32 <br />wheel paths and as determined by the Engineer. Traffic control shall be provided by the 33 <br />Contractor as requested by the Engineer. Failure by the Contractor to provide the 34 <br />requested traffic control will result in forfeiture of the request for cores. When the CPF for 35 <br />the lot based on the results of the HMA cores is less than 1.00, the cost for the coring will 36 <br />be deducted from any monies due or that may become due the Contractor under the 37 <br />Contract at the rate of $200 per core and the Contractor shall pay for the cost of the 38 <br />traffic control. 39 <br /> 40 <br />5-04.3(10)A HMA Compaction – General Compaction Requirements 41 <br />Compaction shall take place when the mixture is in the proper condition so that no undue 42 <br />displacement, cracking, or shoving occurs. Areas inaccessible to large compaction 43 <br />equipment shall be compacted by other mechanical means. Any HMA that becomes 44 <br />loose, broken, contaminated, shows an excess or deficiency of asphalt, or is in any way 45 <br />defective, shall be removed and replaced with new hot mix that shall be immediately 46 <br />compacted to conform to the surrounding area. 47 <br /> 48