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<br /> <br />02574 - 5/9 <br />level of the existing pavement surface. The liquid asphalt shall be Grade RC-70, <br />conforming to the requirements of D.O.T. Specifications, Section 916-2. The sand <br />shall conform to the requirements of D.O.T. Specifications, Section 902 for fine <br />aggregate. <br />B. The cold mix is to be installed one block at a time, not crossing any intersection, or a <br />maximum of 1,200 feet shall be completed before the Contractor may move forward <br />with his excavation work. Backfill, compaction and temporary paving is to keep pace <br />with the pipe installation. Written permission must be obtained from the City and the <br />agency permitting the work to allow greater lengths than 1,200 feet. Permitting <br />agencies may reduce the allowable limits in their permit, or for other unforeseen <br />right-of-way conditions. <br />C. Prior to completion of the work and within a maximum of 30 calendar days, the <br />Contractor shall remove the 1 inch of cold mix and surplus backfill. He shall replace it <br />with the specified compacted limerock base course and asphaltic within the specified <br />working limits, as specified in the Type I pavement repairs described below. <br />Municipal agencies permitting this work may accelerate the time for removal of the <br />cold mix, at their discretion. <br />D. The temporary pavement shall be maintained by the Contractor in a condition <br />satisfactory to the City until its removal. Removal shall include any surplus backfill <br />material. Replacement of the temporary pavement with permanent pavement shall <br />be made within 30 days, but not less than 15 days to minimize cracks to final <br />pavement due to trench settlement. In replacing the temporary paving with <br />permanent pavement, all work shall be completed in sections compatible with <br />specified traffic maintenance procedures. <br />E. The Contractor may elect to install a suitable temporary hot mix asphaltic pavement, <br />to be left in-place, in lieu of cold mix, when the hot mix asphalt is left in-place and <br />installed over properly compacted limerock base course. This temporary pavement <br />shall be incorporated into the specified full roadway width permanent pavement <br />restoration called Type V paving restoration. <br />F. Sand seal on the limerock base course will not be permitted in lieu of temporary <br />paving. <br />G. Unless otherwise approved by the City, temporary paving, shall be placed the same <br />day the trench is backfilled. <br />H. Where asphalt overlay meets existing pavement, at the resurfacing limit line, the <br />existing pavement shall be cut with a mechanical circular saw, in a straight neat line, <br />then a strip 2 feet wide and 1-inch thick shall be milled perpendicular to the <br />centerline of the roadway being resurfaced. Joint between existing and proposed <br />asphalt shall be smooth and of constant thickness, and only feathering as per <br />feathering detail in the contract drawings will be allowed. <br />3.03 TYPE I PAVING REPAIR (Limerock Base - Asphaltic Concrete Surface) <br />A. Type I paving repairs shall be made with an 8-inch thick compacted limerock base <br />and a minimum 1-inch thick asphaltic concrete surface. On City roads asphaltic <br />concrete shall have a compacted thickness of 2-inch, placed in a minimum of two (2) <br />compacted 1-inch lifts. <br />B. The backfill previously placed and compacted shall be excavated to the required <br />depth below the existing road surface and the existing paving shall be milled to allow