Interwest Construction Inc. 12/17/2025

CITY OF EVERETT SPECIAL PROVISIONS Water Main Replacement “Y” – Ph 2 Div 5 – SURF TREATMTS & PVMTS October 2025 Work Order No. UP 3814 SP-170 Category 2: Sensitive information Category 2: For official use only / disclosure permissible by law. Roadway cores for density may be obtained by either the City or the Contractor in accordance with WSDOT SOP 734. Provide minimum 4-inch core diameter, unless Engineer approves otherwise. The City will test Roadway cores in accordance with WSDOT FOP for AASHTO T 166. If the Contract includes the Bid item “Roadway Core,” obtain the cores in the presence of the Engineer on the same day the mix is placed and at Engineer designated locations. If the Contract does not include the Bid item “Roadway Core,” then the City will obtain the cores. For a lot in progress with a CPF less than 0.75, a new lot will begin at the Contractor’s request after the Engineer is satisfied that material conforming to the Specifications can be produced. Compact HMA mixture accepted by commercial evaluation and HMA constructed under conditions other than those listed above on the basis of a test point evaluation of the compaction train. Perform the test point evaluation in accordance with instructions from the Engineer. Use the number of passes with an approved compaction train required to attain the maximum test point density on all subsequent paving. Thoroughly compact HMA for preleveling. Compact HMA used for preleveling wheel rutting with a pneumatic tire roller unless Engineer approves otherwise. 5-04.3(10)A Test Results For a sublot that has been tested with a nuclear density gauge that did not meet the minimum of 92 percent of the reference maximum density in a compaction lot with a CPF below 1.00 and thus subject to a price reduction or rejection, the Contractor may request that a core be used for determination of the relative density of the sublot. The relative density of the core will replace the relative density determined by the nuclear density gauge for the sublot and will be used for calculation of the CPF and acceptance of HMA compaction lot. When City takes cores at the Contractor’s request, the City must receive request by noon of the next workday after the Contractor is provided with nuclear density test results for the sublot. City will obtain core(s) from locations outside of wheel paths and as the Engineer determines. Provide traffic control in accordance with Engineer’s direction. Failure by the Contractor to provide the requested traffic control will result in forfeiture of the request for cores. If the CPF for the lot based on the results of the HMA cores is less than 1.00, the City will deduct the cost for the coring from any monies due or that may become due the Contractor under the Contract at the rate of $200 per core. In addition, the cost of the traffic control will also be the Contractor’s responsibility. 5-04.3(10)B HMA Compaction – General Compaction Requirements Compact mixture only when the mixture is in the proper condition so that no undue displacement, cracking, or shoving occurs. Compact areas inaccessible to large compaction equipment by other mechanical means. Remove and replace HMA that becomes loose, broken, contaminated, shows excess or deficiency of asphalt, or is in any way defective, with new hot mix. Immediately compact to conform to the surrounding area. Provide type of rollers and their relative position in the compaction sequence to attain the specified densities. Operate rollers shall only be in the static mode when the internal temperature of the mix is less than 175°F unless Engineer approves otherwise. Do NOT operate a roller, regardless of mix temperature, in a mode that results in checking or cracking of the mat. Only operate rollers in static mode on bridge decks.