Participant’s initial briefing on Creating a Neighborhood SSD to

Partner with the City for Dredging

Robin Hood Forest

October 18,2010

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DCM Dave HansenPhill Roehrs

Prior Efforts / Reviews

• 1997 Citywide Analysis Too big, too long, unaffordable

• 2004-2005 Series of 4 Council Briefings Four potential courses of action identified No formal council action

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ROBIN HOODFOREST

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Legal Considerations

• VA Code §15.2-2403 Authorizes SSDs for navigation

• Minimum of 51% property owner approval

• Formal adoption by City Council

• Staff recommending 80% property owner approval

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Current Proposal:

• Neighborhood channel funded by SSD

• City cost share’s by funding spur channel

• Individual funding of turn basins

• City management of project

• Economies of scale

• Defined schedule

• Sunset duration7

Real Estate• Voluntary Dedication of Construction Easements

and Rights-Of-Way

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Project Format

• Mechanical Dredging

• Potential for neighborhood dredged material transfer

• City Dredged Material Transfer Station

• Deposition at City Disposal Area :Whitehurst Borrow Pit

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Lower Western Branch

Upper Western Branch

Linkhorn Bay

Eastern Branch

Long Creek & Broad Bay

Crab Creek

Former Recording Studio

Maple Street

V.B. Blvd.-TBD

Laskin Road -TBD

POTENTIAL MECHANICAL DREDGING TRANSFER SITES

Dredging Cycles• Initial dredging: 2 years after SSD adoption

• Projected cycle: 7 years

• 2nd cycle anticipated at 70% of initial volume

• 3rd cycle anticipated at 50% of initial volume

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Year 9 162

1st Dredging 2ndDredging 3rdDredging

1st Dredging Cost Estimate

• City Portion: $78,120• SSD Portion: $372,279• Individual Channels: $5,000 average• 1st Dredging engineering and construction contract could reach $600,000• Includes design, administrative costs, survey, construction and navigation aids

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Life Cycle Estimated CostsCity Portion

Cycle Volume Cost1 2170 CY $78,1202 1,519 CY $73,2773 1,085CY $73,655

4,774 CY $225,052

(includes 5% cost escalation)($30, $40.20, $56.57)

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Life Cycle Estimated CostsSSD Portion

Cycle Volume Cost1 10,341 CY $372,276*2 7,239 CY $349,1953 5,171 CY $350,995

22’751CY $1,072,466

(includes 5% cost escalation)* Does not include initial navigation aids costs

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Appropriations ScheduleCycle Year Design Construction

1 1 $100,0002 $350,000

2 8 $100,0009 $322,000

3 15 $100,00016 $324,000

_____________Total $300,000 $997,518

Neighborhood & City channels only = $1,297,518*15* Does not include initial navigation aids costs

SSD Data

• Total SSD assessed value: $19,285,500

• 26 properties in the neighborhood district

• Each penny surcharge raises $1928/year

• SSD rate covers costs for 16 year life: 34.8 ¢/$100 of the

FY11 assessed value

• Average property contributes $2,581/year

• Review rate at end of every 4th year16

Timeline• 2 years from SSD adoption to first cycle of dredging for

engineering, real estate and permits

• 2nd and 3rd cycles each 7 year thereafter

• Sunset in 16 years

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Year 9 162

1st Dredging 2ndDredging 3rdDredging

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 : +2500 properties, $3M/yr + 10 years

completion, $30M in 1997 dollars• Expand City main channel projects to include spur

channels: no ROI via confirmed neighborhood partners, @40 spurs, + $4million

• Cost sharing on a single dredging basis: 65/35 but not all coves were the same

• Fully funded by City: takes ownership = $35M in 2005 dollars

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Hybrid Alternative:•Individual neighborhood SSD’s, specific scopes and

timelines (3 cycles, 16 years)

• Includes City-funded Spur Channels (early

appropriations allow for 1st dredging in year 2)

• Partnership - Cost sharing (3 sources)• City management of effort – formulation, funding,

design, permitting, construction, maintenance• Creates a viable solution to reclaim navigation &

improve water quality• Establishes a reasonable timeline with visible results

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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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• Validate willingness to reach 80%• Brief City Council on likelihood • Staff authorization• Execute documentation• Public hearing• City Ordinance establishing SSD

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Next Steps for Robin Hood Forest