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inch deep holes in the adjoining existing pavement. Splices in the reinforced steel required <br />to be made shall have an overlap of at least zZi~elve (12) inches. <br />5. Utility trenches patched with P.C.C. shall be Dept free of traffic or other detrimental trespass <br />through use of suitable barriers and other traffic control devices for a minimum period of <br />.seven (7) days. An alternative using 9.0 sacks of portland cement per cubic yard of concrete <br />allows the traffic to be returned after a minimum period of (3) days. .. <br />6. Pavement cuts encountering P.C.C. overlaic by asphalt concrete may be replaced by full <br />depth asphalt concrete. <br />7. Internal vibration shall be used to consolidate P.C.C. which is being placed in depths greater <br />than seven (7) inches. <br />3.B.2 Asphalt Cement Concrete Streets <br />In addition to general requirements 1 throug1120 gi~~en in section 3.B above, work within Asphalt <br />Cement Concrete (A.C.) streets and alleys shall conform to the following requirements: <br />A.C. in utility trench patches shall be placed to a depth matching the existing pavement or <br />four (4) inches, which ever is greater. The t~~p course shall be class "C" mix and shall not <br />be placed any thicker than 2 inches or thinner than 1 inch. Where the existing pavement is <br />A.C. over P.C.C., C.T.B. or A.T.B., replacement depth shall be the combined depth of the <br />A.C. and P.C.C., C.T.B. or A.T.B. <br />The permittee may substitute P.C.C. for A.C. for all except the top (4) four inches when <br />replacing existing pavement sections. If the permittee uses a 9 sack concrete mix design and <br />places the concrete at an approximate slump oft inches, final asphalt concrete may be placed <br />after allowing the concrete two hours to cure. <br />2. Tack coat asphalt conforming to section ~ 11 of the Standard Specifications shall be <br />uniformly applied to the existing abutting A.C., P.C.C., A.T.B., or C.T.B surfaces. <br />The materials and the placement and compaction of A.C. shall conform to the requirements <br />of section 211 of the Standard Specifications. <br />Compaction of the surface lift of A.C. shall be accomplished using a steel wheel roller of <br />adequate size to insure aggregate interlocking and thorough compaction to the above- <br />referenced specifications. A vibrator plate compactor shall not be acceptable for finish lift <br />compaction. <br />4. After final compaction, all jointsbetween nee;~ and existing paving shall be sealed with CSS- <br />1 paving asphalt, and sanded to prevent pickup and tracking. The asphalt shall be applied <br />Utility & R/W Permit Policy <br />Exhibit A - 28 r:\adminord\rules\OOrowrlexa.wpd(09/13/00) <br />