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require monitoring or inspection are identified as follows, with prior notification to the Department <br />of Public Works office (Telephone 509-962-7523). <br />A. Preconstruction Conference: Three working days prior notice. Conference must precede <br />the beginning of construction and include contractor, designing engineer, utilities and <br />other parties affected. Plan approvals and permits must be in hand prior to the <br />conference. <br />B. Clearing and Temporary Erosion/Sedimentation Control: One working day notice prior <br />to initial site work involving drainage and installation of temporary water retention, <br />detention and siltation control. Such work to be in accordance with the approved plans. <br />C. Utility and Storm Drainage Installation: One working day notice prior to trenching and <br />placing of storm drainage systems. <br />D. Utility and Storm -Drainage Backfill and Compaction: One working day notice before <br />backfill and compaction of storm drainage systems. <br />E. Subgrade Completion: One working day notice at stage that underground utilities and <br />roadway grading are complete, to include placement of gravel base if required. <br />Inspection to include compaction tests and certifications described in KCC 12.08. <br />F. Curb and Sidewalk Forming: One working day notice to verify proper forming and <br />preparation prior to pouring concrete. <br />G. Curb and Sidewalk Placement: One working day notice to check placement of concrete. <br />H. Crushed Surfacing Placement: One working day notice to check placement and <br />compaction of crushed surfacing base course and top course. <br />Paving: Three working days notice in advance of paving with asphalt or Portland cement <br />concrete. <br />J. Structural: Three working days notice prior to each of critical stages such as placing <br />foundation piling or footings, placement and assembly of major components, and <br />completion of structure and approaches. Tests and certification requirements will be as <br />directed by the County Engineer. <br />K. Final Inspection: Five working days prior to overall check of roadway or drainage project <br />site, to include completion of paving and associated appurtenances and improvements, <br />cleaning of drainage system and all necessary clean-up. Prior to approval of <br />construction work, acceptance for maintenance and release of construction performance <br />bonds, the developer/contractor shall pay any required fees, submit any required <br />maintenance and defect financial guarantees, provide certification of monumentation <br />and submit one mylar set of corrected plans (as -built) reflecting all minor and design <br />plan changes of the roadway and drainage systems. The Department of Public Works <br />shall specify the number of mylar sets as warranted by the type of improvement. Mylars <br />shall not have any shading or adhesive addition in any areas. If original plans were <br />completed on a CADD system, the developer/contractor shall submit, in addition to <br />mylars, a copy of the CADD drawing files in .DWG format. <br />t Final Maintenance Inspection: 30 days prior to the end of the maintenance period. Prior <br />to release of the maintenance guarantee, there shall be successful completion of the <br />maintenance period as described in KCC 12.01.150, repair of any failed facilities and the <br />payment of any outstanding fees. <br />M. Quality Control: Contractor shall retain the services of an independent testing agency to <br />perform quality control/quality assurance (QC/QA). Inspection reports and testing <br />