8j. Presentation - Airfield Pavement and Supporting Infrastructure Replacem
Item No.8j_supp__ Meeting Date: August 10, 2021 2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program North Runway Protection Zone Culvert (CIP #C800930) Michelle Carioto & Chris Coulter AVPMG C801177 August 10, 2021 Action Requested Request Commission authorization for the Executive Director to advertise and award a major public works contract to replace the North Runway Protection Zone Culvert (NRPZ Culvert), a year 2022 component of the 2021 to 2025 Airfield Pavement and Supporting Infrastructure Replacement Program. This construction authorization is for $3,800,000 for a total program authorization to date of $55,195,000. The total 2021-2025 program cost is $153,500,000. 2 Program Overview The 2021-2025 Airfield Pavement and Supporting Infrastructure Replacement Program replaces distressed airfield pavement (concrete and asphalt), joint sealant, related and supporting infrastructure at the Airport to provide safe and efficient conditions for aircraft operations and meet FAA requirements. Program Notes: Program Budget: $153,500,000 Authorized to Date: $55,159,000 (including today's authorization) Maximizes FAA Grant Funding ($21,100,000 To-date) Design authorization for the program occurred in Q4 2019 Program is in its first year (2021) of the five-year construction schedule Construction authorization occurs for each major construction contract issued - typically one FAA funded and one non-FAA funded contract per year 3 Program Overview Map 4 North RPZ Project Scope Install temporary stream bypass, water treatment and fish protection measures Remove the failing roadway Restore fish passage and the Miller Creek streambed to its natural state Install the engineered roadway decking spanning the creek to allow safe conditions for first responders, maintenance, and construction traffic 5 Project Location N 6 North Runway Protection Zone Culvert Site 7 Project Schedule Commission construction authorization 2021 Quarter 3 Construction start 2022 Quarter 3 In-use date 2022 Quarter 4 8 Budget Culvert Project Budget (U00619) Total Project Design $1,100,000 Construction $3,800,000 Total $4,900,000 Airfield Pavement & This Request Total Program Supporting Infrastructure Replacement Program Budget (C800930) Design $0 $13,495,000 Construction $3,800,000 140,005,000 Total $3,800,000 $153,500,000 9 Project Risks RISK DESCRIPTION PROBLEM IMPACT MITIGATION PLAN In Water Work Significant amount of the work Med Med Robust construction water involves activities located below management plan (including the water table. stream diversion plan and pump sizes) will be included in the contract. Discovery of Should archaeological materials Low High A discovery plan is in place and Archaeological (e.g., bones, shell, stone tools, research of the area has been Resources beads, hearths, etc.) be observed performed and we do not expect during Project activities, all work a discovery, but we will be in the immediate vicinity of the prepared if there is one. find will be halted. Material Lead Time Few suppliers and long lead Med High Procure the contractor early times for the culvert/bridge enough so there is adequate structure could potentially have a time to procure the structure one-year impact on the schedule ahead of schedule in order to due to the limited "fish window" meet the fish window for allowable construction construction timeline. 10
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