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10. Unless otherwise approved by the Inspector, pavement cuts shall be made parallel or perpen- <br />dicular to the centerline of the public way. <br />11. Trench backfill within the public streetright-of--way and under all paved or graveled surfaces <br />outside of the public streetright-of--way shall be Class B (3/4 inch-0 crushed base aggregate). <br />Pea gravel backfill shall not be allowed. Class A (native or similar material) backfill may <br />only be used in easement areas which are not paved and will not be surfaced with paving <br />material such as PCC or AC. During the wet weather season (October 15~' through April <br />30~') backfill within easement areas shall consist of Class B (3/4 inch-0 Crushed Base <br />Aggregate). <br />Trench compaction shall be at least 95 percent of maximum density. In non-paved areas <br />outside public street right-of--way, trench compaction shall be at least 90 percent of <br />maximum density. In each case, maximum density shall be determined by AASHTO T-99 <br />Method D as corrected for oversize by AASHTO T-224. Backfill lifts or layers shall not <br />exceed 24 inches in depth. Compaction shall be accomplished using mechanical vibrators <br />or impact tampers. Wheel rolling by a truck or backhoe shall not be acceptable. <br />The inspector may require compaction testing. All compaction testing shall be performed <br />by an independent lab. All cost associated with compaction testing shall be the responsibility <br />of the permittee. <br />Controlled density fill (CDF) should be used in trenches crossing a street or alley right-of- <br />way at right angles to the alignment. With prior consent, the Inspector may allow CDF <br />backfill parallel to the right-of--way. <br />Traffic may temporarily be placed directly upon CDF prior to paving as soon as it has <br />sufficiently hardened so that the surface will withstand traffic or construction equipment <br />loading without deformation. If CDF is used as a temporary surface restoration material, the <br />surface shall be maintained and repaired by the permittee if damage occurs or maintenance <br />is necessary. <br />12. All Portland Cement Concrete used in the replacement of streets, alleys, or sidewalks shall <br />obtain a minimum breaking strength of 3,300 psi in 28 days and conform to sections 212 <br />through 215 of the Standard Specifications. <br />13. All ornamental surfacing shall be replaced "in-kind" to that surfacing removed. <br />14. Where sections of a sidewalk are requested to be removed by the permittee, they shall be <br />removed to the nearest existing score or joint in each direction. <br />Utility & R/W Permit Manual <br />Exhibit A - 29 <br />C:\WINDOWS\Temporary Jnternet Files\OLKB202\03rowrlexa.wpd -Manual (03ROWR 1).WPD(11/07/03) <br />