TYBEE ISLAND Wave Ecology & The Highway 80 Challenge Opening - - PowerPoint PPT Presentation

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TYBEE ISLAND Wave Ecology & The Highway 80 Challenge Opening - - PowerPoint PPT Presentation

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TYBEE ISLAND Wave Ecology & The Highway 80 Challenge Opening the Door on Data October 25, 2010 Tuesday, October 26, 2010 1 As concerned citizens of The City of Tybee Island, we will be conscientious stewards of our unique historic and

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TYBEE ISLAND

Wave Ecology & The Highway 80 Challenge Opening the Door on Data October 25, 2010

1 Tuesday, October 26, 2010

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“As concerned citizens of The City of Tybee Island, we will be conscientious stewards of our unique historic and cultural heritage, environmental resources, and diverse economic

  • community. We will also ensure that our growth does not

exceed the Island’s carrying capacity.”

  • “Vision for the Future” City of Tybee Island Master Plan

2 Tuesday, October 26, 2010

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CARRYING CAPACITY

The Human Application

I = P x A x T

I = Environmental Impact P = Population (Size of Human Population) A = Affluence (Level of Consumption by the Population) T = Technology (Processes to Obtain Resources for Goods & Wastes)

3 Tuesday, October 26, 2010

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TYBEE’S CAPACITY... HOW CAN WE KNOW?

4 Tuesday, October 26, 2010

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CARRYING CAPACITY

I=PAT

P , A, & T Factors

Mobility Connectivity Residential & Commercial Energy Sources Economic Engines Medical Services Emergency Response Consumer Goods

5 Tuesday, October 26, 2010

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CARRYING CAPACITY

P-FACTORS WHAT WE KNOW...

ANNUAL POPULATION = 3,800 PEAK TOURISM POPULATION = 10,000

July 3, 2010 16,173 vehicles x 2 = 32,346

6 Tuesday, October 26, 2010

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CARRYING CAPACITY

A-FACTORS

Tybee citizens must rely on external sources for commodities from a global market Daily Services Available: Food Gas Medical/Dental Facilities Solid Waste? Electricity Supply? Construction Supplies?

7 Tuesday, October 26, 2010

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CARRYING CAPACITY

A-FACTORS

Tybee citizens must rely on external sources (i.e. one connection point at Highway 80) for importing commodities Daily Services Such As...

Food Gas/Fuel Medical/Dental Facilities Solid Waste Disposal Electricity Construction/Building Supplies and Many Others

8 Tuesday, October 26, 2010

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CARRYING CAPACITY

A-FACTORS

Business as Usual...What is the revenue generator for Tybee? 3 NAICS Code Sectors with 20+ employees

Retail Trade = $5,848,000 annually / $786,000 payroll / 59 employees Real Estate, Rental = $3,457,000 annually / $501,000 payroll / 23 employees Accommodation & Food Service = $16,540,000 annually / $4,791,000 / 322 employees

*(Source: US Census Bureau 2002 Economic Census)

Tybee Island per capita income in 2000 = $32,406

Compared to $21,587 Nationally

*(Source: US Census Bureau 2000 Census)

9 Tuesday, October 26, 2010

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CARRYING CAPACITY

T-FACTORS Water & Sewerage = 10,000 persons and NO more...

EPD has restricted the increase of water withdrawal permits

*Based on Current Permits, EPA Estimations & “Water and Wastewater Treatment Plant Operations” by Frank Spellman 2009

Floridan Aquifer EPD Drinking Water Permit # 025-0027 Average limit/year 0.960 MGD Average limit/month 1.6 MGD Tybee Island WPCP EPD Permit # GA0020061 Average limit/month 1.0 MGD

10 Tuesday, October 26, 2010

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CARRYING CAPACITY

T-FACTORS

Existing Housing = 2,859 Units

People = 5,918 (based on current household size)

Includes owner occupied and second/rental homes

  • Avg. Household Size (2000 Census) = 2.07

Current Residential Population = 3,716

*Based on 2000 Census Data (Includes both rental and owner occupied housing)

11 Tuesday, October 26, 2010

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CARRYING CAPACITY

T-FACTORS

12 Tuesday, October 26, 2010

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NARSAL: GA Impervious Cover 1991 NARSAL: GA Impervious Cover 2001 NARSAL: GA Impervious Cover 2008

13 Tuesday, October 26, 2010

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NARSAL: GA Land Use Trends 1974 NARSAL: GA Land Use Trends 2001 NARSAL: GA Land Use Trends 2008

14 Tuesday, October 26, 2010

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2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 5 10 15 20 25 30 35

Tybee Island Weekly Tra!c Counts Jan - July 2010

Sun Mon Tues Wed Thurs Fri Sat

Jan 2010 July 2010

Numbers of Automobiles Weeks of the Year

Days Breeching Capacity b/w Jan 2010 & Jul 2010 = 23

  • Aprox. 11%

Fri, Sat or Sun Numbers given for estimation purposes. Exact highway capacity would need further calculation and traffic count data collected from two lane portion of

  • roadway. Traffic Count data presented represents

the four lane capacity area where two lane capacity

  • f the Lazaretto Creek bridge turns into four lane.

Since few ingress and egress points are located between the two lane to four lane conversion the data may still be utilizes for estimation purposes.

Days Breeching Capacity during Labor Day Weekend 2010 = 1

No hourly rates exceeded capacity However highest hourly V/C ratio was 0.55 (1.0 indicates maximum roadway capacity) (peak hr volume / capacity = v/c ratio)

CARRYING CAPACITY

T-FACTORS Hwy 80 Capacity = 12,000v/day*

*Based on Highway Capacity Manual v.2000 & “Capacity & Quality of Services of Two-lane Highways by the Midwest Research Institute at UC-Berkley

15 Tuesday, October 26, 2010

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CARRYING CAPACITY

T-FACTORS Hwy 80 Capacity = Flooding*

*Based on NOAA Tidal Station #8670870 at Fort Pulaski & Chatham County Shallow Coastal Flooding Model at High Tide of 9.2 ft MSLW

16 Tuesday, October 26, 2010

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27 Days Above 9.0 ft

Sept 24, 2009 through October24, 2010

11 Days Above 9.2ft

Sept 24, 2009 through October24, 2010 8 Months Above 9.2ft

CARRYING CAPACITY

T-FACTORS Hwy 80 Capacity = Flooding*

*Based on NOAA Tidal Station #8670870 at Fort Pulaski & Chatham County Shallow Coastal Flooding Model

17 Tuesday, October 26, 2010

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CARRYING CAPACITY

T-FACTORS

Solid Waste:

  • Waste Pro Landfilled Offsite
  • Recycling Shipped and Processed Offsite
  • No Composting of Organic Materials
  • No Material Reuse Center (including mulch, compost)

Electricity Supply:

  • Georgia Power / International Paper Savannah Mill
  • Coal Supplied from Scott’s Branch Mountain, Kentucky

18 Tuesday, October 26, 2010

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CARRYING CAPACITY

Conclusion:

  • Carrying Capacity relative to many variables
  • Exceeded by Urban Ecological standings
  • Opportunity to support population beyond carrying capacity depends

upon:

  • Implementing new technologies
  • Providing multiple modes of connectivity or utilization of

resources within the area

  • Inter-governmental / Inter-agency coordination

19 Tuesday, October 26, 2010

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INTER-GOV. / INTER- AGENCY COORDINATION

Working Together for a Central Purpose

20 Tuesday, October 26, 2010

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SLIDE 21 T y b e e I s l a n d F i r e D e p a r t m e n t T y b e e I s l a n d P
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n E m e r g e n c y D i s p a t c h Z
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e M e d S t a r A m b u l a n c e S i t e

Wave Ecology: Route 80 & Tybee Island

Emergency Management Services

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!

3,300 6,600 9,900 13,200 1,650 Feet

Issue: One Exit (Multiple Jurisdictions) 911 Dispatch Zone not linked to jurisdictions

21 Tuesday, October 26, 2010

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Water 7 Marinas located along the corridor = 0 public Tybee Island two water-born vessels - 1 direct beach launch capacity Savannah - Chatham PD no marine patrol watch beyond Bull River Air 7 Helipad areas (defined by 100ft x 100ft cleared upland) 1+ Coast Guard helicopters available (no MOU/LOA) when not supporting LNG

  • r Savannah River vessel protection.

Land Hwy 80 Emergency Jurisdiction not Tybee Island, yet only method of connectivity Metro PD not frequently able to offer patrol units to reduce speed along Hwy 80 Largest Traffic Incident Area near Bull River Bridge (Hwy 80 & Johnny Mercer) Private shuttle and electric car business available on Tybee Island Known central activity hubs

Emergency Services*

*Based on data provided by the Savannah - Chatham PD, Tybee Island PD, CEMA, Tybee Island Fire Department, and U.S. Coast Guard

23 Tuesday, October 26, 2010

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CONCLUSION

One way or another the choice will be made by our generation, but it will affect life on earth for all generations to come.

  • Lester Brown, Earth Policy Institute

Image of Tsewang Norbu of the Himalyan village of Digger. Trained at the Barefoot College of Tilonia, India in the installation and repair of solar photovoltaic units. All units were carried across the 18,400ft Khardungla Pass. Just an example of the commitment

  • f this community leader to bringing in technologies that would improve the quality of

life and carrying capacity of his community.

24 Tuesday, October 26, 2010