City Council Meeting - FINAL

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Meeting Date: 01/04/2022  
From: Scott Overton, Public Works Director

Consideration and Adoption of Resolution No. 2022-01:  A resolution of the Flagstaff City Council, approving an Intergovernmental Agreement (IGA) between Flagstaff Unified School District and the City of Flagstaff for storm water detention and drainage improvements at Killip Elementary School.
1) Read Resolution No. 2022-01 by title only
2) City Clerk reads Resolution No. 2022-01 by title only (if approved above)
3) Adopt Resolution No.2022-01
Executive Summary:
In the summer of 2021, as a result of the Museum Fire that occurred in 2019, our community experienced post-wildfire flooding in the Spruce Avenue watershed. Impacts of monsoon rains and post-wildfire flooding identified a need for expedient mitigation strategies. 

Currently, the Killip school site is under construction, and the construction plans already include two large open field areas. The engineering team identified the open areas as ideal locations for on-site detention basins and underground storm water infrastructure connecting the basins to the existing storm water system. The detention basin system will be an important mitigation strategy that will serve as a critical piece of the overall storm water infrastructure in the area. The urgency is to deliver this stormwater improvement prior to July of 2022. 

The coordination with FUSD will allow the city to deliver the improvements prior to our next monsoon season. Post wildfire flooding is a significant threat and following the 2021 monsoon season the city response to flooding was quantified.  Over 11,000 tons of debris was removed in the summer of 2021.  In addition to resource requests of county and state support, the city is developing mitigation strategies and infrastructure improvements that will potentially lessen the burden on all resources of government and provide the safest environment possible for the residents that are now living in the compromised watershed.

Forest conditions and burn scar recovery are predicted to take many years, if not decades.  FUSD has current agreements with CORE Construction. Currently the contractor is delivering a new elementary school and the element of drainage, stormwater infrastructure and the delivery of a completed school site will be August of 2022.

The IGA is currently under review by FUSD and will be attached to the final agenda.
Financial Impact:

The Killip detention basin project is budgeted this year for $600,000 in the Stormwater Fund, 206-08-385-3498-0-4422.  Additional budget authority within the Stormwater Fund will come from the contingency of $300,000 and capital projects that will not be completed this year.  If additional budget authority is needed, a contingency transfer will occur from the Water Fund. 


Due to the unanticipated expenditures in the Stormwater Fund this fiscal year due to extreme weather events.  The City anticipates issuing debt to assist with the cash flow of the Stormwater Fund.  This will come as a separate action to Council. 

Policy Impact:
The detention basin system is an important element of the Museum post wildfire flooding system wide mitigation projects.  This has become a top priority of the city and Council to address the impacts to residents in the area. Also, a seasonal full deployment of response resources is costly to our taxpayers and not sustainable.  The mitigations will be implemented to reduce the greater burden on community resources and improve infrastructure that will be essential to address the greater flooding impacts.
Connection to PBB Priorities/Objectives, Carbon Neutrality Plan & Regional Plan:
PBB Priorities/Objectives:
Foster a safe, secure, and healthy community.  Flooding response, robust infrastructure improvements and weather variation are all important elements of the plans and infrastructure scores highly in the PBB process.

Carbon Neutrality Plan Goal:
Community Resilience CR-1: Ensure all mitigation actions improve Flagstaff’s ability to adapt to the future.
Community Resilience CR-2: Strengthen existing community systems to create resilience to both short-term shocks and long-term change.

Regional Plan Goal:
Goal E&C.3. Strengthen community and natural environment resiliency through climate adaptation efforts.
Has There Been Previous Council Decision on This:
This project has been discussed with the Council during recent briefings and at work session updates that relate to the Museum mitigation developments.
Options and Alternatives:
1. Do not approve the IGA.  FUSD would likely continue with their original field designs and we would miss the opportunity to participate in the development of our longer term mitigation project.

2. Modify the terms of the IGA and provide staff direction as desired.
Expanded Financial Considerations:
This action and IGA demonstrate good planning and the ability for government agencies to work towards a common goal to save the taxpayer costs by cooperation through the existing procurement and leveraging a current construction project timeline to deliver important stormwater infrastructure improvements as quickly as possible.  Each agency is contributing a proportionate share of financial resources and sharing in the project delivery with a mobilized and on-site contractor to complete the improvements.
Community Benefits and Considerations:
Community benefits are that an improved detention system would be an opportunity to possibly lessen the impacts downstream of the Killip School site.  In addition, it demonstrates the commitment of the city to be an active partner in flood mitigation and willing to demonstrate partnerships with peer government agencies to the benefit of the community and neighborhood. 
Community Involvement:
Discussion has occurred in a work session public forum and the community has been actively involved in the school project redevelopment.
Construction Plans
GMP #3
GMP #4
Res. 2022-01


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