02222011 NEIGHBORHOOD CHANNEL DREDGING~ ~i
2/22/2011
City Council Briefing on
Creating a Neighborhood SSD to
Partner with the City for Dredging
Robin Hood Forest
February ZZ, Zoil
DCM Dave f Iansen
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Current Proposal:
• Neighborhood channels funded by SSD (green)
• City cost share's by funding spur channel (blue)
• Individual funding of turn basins
• City management of project
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~, 4 ~ _ • Economies of scale
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-~~ ~~~, `' ,~;, ;F ~ • Defined schedule
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j~- • Sunset duration
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Real Estate
• voluntary Dedication of Construction Easements
and Rights-Of-Way
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POTENTIAL MECHANICAL DREDGING TRANSFER SITES
/ Maple Street
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~O Linkhorn Bay
2
Laskin Road -TBD
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Life Cycle Estimated Costs
SSD Portion
C~cle Volume Cost
1 ii,5oo CY $432,000
z 8,05o CY ~388,332
3 ~,~5o CY ~~ 09~~~~
Z5~3oo CY $i,2io,665
(includes 5% cost escalation)
($30, ~4o.zo, ~56.57)
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ist Dredging Cost Estimate
' • City Portion: $~8,000
• SSD Portion: $43z,ooo
• Individual Channels: ~5,00o average
• ist Dredging engineering and construction contract
could reach ~6q.o,ooo
• Includes design, administrative costs, survey,
construction and navigation aids
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Appropriations Schedule
C~cle Year Design Construction
1 1 $100,000
z $4io,ooo
2 cg $100,000
9 $355,868
3 i5 $ioo,ooo
i6 ~35g~217
Total $300,000 $i,ia4,o58
Neighborhood & City channels only = $i,4Z4,o85
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Risks:
• Environmental permits
•Encroachment approval
• Real estate dedication
• Real estate valuation changes
• Cost escalation assumption (5% annually)
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Alternatives:
• Status quo
• Basin wide SSD :+a5oo properties, ~3M/yr + io years
completion, $3oM in i997 dollars
• Expand City main channel projects to include spur
channels: no ROI via confirmed neighborhood
partners, @4o spurs, + ~4million
• Cost sharing on a single dredging basis: 65~35 but not all
coves were the same
• F~lly funded by Ciry: takes ownership =~35M in zoo5
dollars
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Staff Recommendations:
• Concur with the hybrid alternative ... and
If accepted by neighborhood - obtaining 80%
approval (signed SSD intent & easement dedication)
• Authorize staff to bring forth an SSD ordinance for
public hearing and City Council consideration
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Next Steps for Robin Hood Forest
• Obtain SSD letters of commitment and construction
easement from 80% of property owners
• Public Hearing
• Presentation of SSD Ordinance for City Council
approval
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Project Status Update
Old Donation Creek Waterway
• SSD Letter of Commitment template finalized
• Construction Easement template finalized but
requires a by property adjustment
• Mailing of individual property owner paclcages to
occur this week
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