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CITY OF EVERETT SPECIAL PROVISIONS <br />3rd Ave Water Quality Project Division 4 – BASES September 12, 2024 <br />WO No – UP 3775 SP – 145 <br /> <br />laid in any direction on the surface on either side of the Roadway crown. Failure to <br />meet this requirement shall necessitate sufficient surface correction to achieve the <br />required tolerance, as approved by the Engineer, at no expense to the City. <br />When portland cement concrete pavement is placed on an asphalt base, the <br />surface tolerance of the asphalt base shall be such that no elevation lies more than <br />0.05 feet below nor 0.00 feet above the plan grade minus the specified plan depth <br />of portland cement concrete pavement. Prior to placing the portland cement <br />concrete pavement, any such irregularities shall be brought to the required <br />tolerance by grinding or other means approved by the Engineer, at no expense to <br />the City. <br />4-06.3(7) Density <br />The asphalt treated base shall be compacted to a density of not less than 80 percent of <br />the maximum theoretical density established for the mix by WSDOT FOP for AASHTO <br />T 209. The density of the base shall be determined by means of tests on cores taken <br />from the Roadway or with the nuclear gauge in accordance with Section 5-04.3(10)B. <br />The frequency of these tests shall be at the discretion of the Engineer, but in no case <br />shall it be less than one control lot for each normal day’s production. The use of <br />equipment which results in damage to the materials or produces substandard <br />workmanship will not be permitted. <br />4-06.3(8) Anti-Stripping Additive <br />An anti-stripping additive shall be added to the asphalt binder material in accordance <br />with Section 9-02.4 in the amount designated in a WSDOT mix design/anti-strip <br />evaluation report for a dense graded hot mix asphalt design from the same gravel source <br />within the last 24 months or as evaluated separately by an accredited lab using current <br />WSDOT test methods (AASHTO T324 – Hamburg or WSDOT TM T718 – Modified <br />Lottman). Alternately, the ATB may be evaluated for anti-strip additive using ASTM <br />D3625 (Standard Practice for Effect of Water on Bituminous-Coated Aggregate Using <br />Boiling Water) by an accredited lab. The anti-stripping additive required will be the <br />minimum amount necessary to achieve a passing evaluation. <br />4-06.4 Measurement <br />Delete all paragraphs in 4-06.4 and substitute the following: <br />Bid items of Work completed pursuant to the Contract Documents will be measured as <br />described in Division B – Bid Item Descriptions of these Special Provisions and Section 1-09 <br />MEASUREMENT AND PAYMENT of the Standard Specifications. <br />4-06.5 Payment <br />Delete all paragraphs in 4-06.5 and substitute the following: <br />Payment for bid items of Work completed pursuant to the Contract Documents will be as <br />described in Division B – Bid Item Descriptions of these Special Provisions and Section 1-09 <br />MEASUREMENT AND PAYMENT of the Standard Specifications. <br /> <br />