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GIBSON ISLAND WATER SYSTEM CAPITAL IMPROVEMENT PROJECT Public Information Meeting June 5, 2012.

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Presentation on theme: "GIBSON ISLAND WATER SYSTEM CAPITAL IMPROVEMENT PROJECT Public Information Meeting June 5, 2012."— Presentation transcript:

1 GIBSON ISLAND WATER SYSTEM CAPITAL IMPROVEMENT PROJECT Public Information Meeting June 5, 2012

2 THE PROBLEM… The Gibson Island Water Storage Tank is Nearing the End of Its Design Life The existing tank is over 40 years old and needs repair  Deteriorated coatings and corroded exposed steel  Deteriorated concrete foundation  Structural defects

3 FINDING THE BEST SOLUTION… The County Compared Rehabilitation Versus Replacement  The results of a December 2009 engineering study recommended the total replacement of the existing tank.  The study concluded that rehabilitation of the existing tank is impractical given its condition and age.

4 FINDING THE BEST SOLUTION… The County Investigated Alternative Tank Sites and Configurations  An engineering study was performed to evaluate possible new tank sites and select the most optimal location and configuration.

5 FINDING THE BEST SOLUTION… The County Investigated Alternative Tank Sites and Configurations  The new tank should be a ground storage tank (non- elevated) to maintain current invisibility to public view.  Only three locations exist on the Island having ground elevations high enough to hydraulically support a new ground level tank

6 FINDING THE BEST SOLUTION… The County Investigated Alternative Tank Sites and Configurations  Location 3 determined to be least favorable option: Within Critical Area Close proximity to surrounding homes  Location 2 feasible but less favorable option: Within Critical Area Lower ground elevations require taller tank Requires construction of access road and additional system piping

7 FINDING THE BEST SOLUTION… The County Investigated Alternative Tank Sites and Configurations The results of an August 2011 engineering study concluded:  Location 1 (Adjacent to the existing tank) is the most optimal site  Capacity: 220,000 gallons  Height: 30 feet  Diameter: 36 feet  Material: Coated Steel or Concrete

8 THE PROPOSED NEW TANK… Existing Tank  Capacity: 173,000 gallons  Height: 25 feet  Diameter: 35 feet  Material: Painted Steel New Tank  Capacity: 220,000 gallons  Height: 30 feet  Diameter: 36 feet  Material: Coated Steel or Concrete

9 NO IMPACT TO THE ENVIRONMENT…  Once the new tank is completed, the existing tank will be demolished and the area will undergo restorative landscaping  No disturbance within Critical Area  No net loss of vegetative cover

10 WHAT YOU CAN EXPECT DURING CONSTRUCTION  No noticeable changes to water pressure or water quality  The new tank will remain hidden from view from the road and surrounding residences  Traffic and noise will be minimal during construction

11 Questions? For general inquiries & further information: Mr. Kyle Massey 410-224-1271 Presentation will be made available online at: www.aacounty.org/dpw www.aacounty.org/dpw


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