May 26, 2015 Presentation to Council and School Board Page 1 of 24
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Two homes and a mesquite thicket were razed. Page 6 of 24
The gym was constructed. Page 7 of 24
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This item was first before you at a combined Council/Board meeting on January 29, 2013 Council/Board entered into an IGA in November of 2014. Term of the IGA was to contract with W.C Scoutten (Town’s Engineer) to address the below items: Town: Access to Kerkes Trailhead ◦ Mitigate drainage issues in the area – originates @ Yavapai/Washington ◦ Creativity in seeing if two projects can overlap saving our residents $ ◦ School District: Mitigate drainage affecting the school site/parking lot ◦ Creativity in seeing if two projects can overlap saving our residents $ ◦ W.C. Scoutten, Inc. (now EPS Group) Study existing drainage conditions ◦ Investigate alternatives to address drainage issues ◦ Prepare report with recommended alternative ◦ Prepare cost estimate ◦ Page 13 of 24
No LEFT TURN Page 14 of 24
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192 cfs 107 cfs 173 cfs 213 cfs 52 cfs Based on 100-yr, 6-hour rainfall Page 16 of 24
52 cfs enters school site from southwest 107 cfs enters from Valentine and Coconino Streets Combines as 173 cfs along north side of school Additional flow from Kerkes Street combines for a total of 192 cfs Discharges to River at 213 cfs Very little slope from Kerkes Street to River Page 17 of 24
Resolves flooding at Kerkes Trailhead area Protects school site from flooding* Provides additional access to Kerkes Trailhead Combines access road with drainage channel Low-water crossing of Kerkes Street New access and traffic circulation for school parking lot Relocate school bus entry to staging area Additional one-way exit from parking lot to bus staging and Kerkes Street * Up to 100-year, 6-hour rainfall Page 18 of 24
Proposed Storm Drain Pipes Page 19 of 24
Low-Water Crossing Channel Page 20 of 24
[Insert cross-section diagram here] Page 21 of 24
Preliminary Project Cost Estimate = $1.9 million (not including property acquisition and permitting) Sanitary sewer relocation Possible waterline and electrical relocation Channel must be closed during wet weather with appropriate signage Design channel for major stormwater flows and heavy vehicles Property ownership/acquisition Floodplain Use/Corps 404 permitting Page 22 of 24
Partnership Considerations ◦ Decision should be made soon to enable both parties to move forward on respective key projects (Kerkes Trailhead and Hassayampa parking lot) ◦ Funding options WUSD has adopted adjacent ways tax to fund this and other projects. Short-term financing (loan or bond) could be considered. Possible grants (one in progress). ◦ Value engineering and phasing options ◦ Final design process Page 23 of 24
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