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<br />CITY OF HALLANDALE BEACH HYDROGEOLOGICAL SERVICES
<br />
<br />LOCATION:
<br />Hal/andale Beach, Florida
<br />
<br />CLIENT:
<br />_ Calvin, G,igccLano_&_As..sociates, Inc.
<br />
<br />KEY PERSONNEL:
<br />Daniel Spector
<br />Vincent Varina
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<br />
<br />Langan provided hydrogeological services in support of
<br />the city's plan to install pressurized right-of-way
<br />stormwater drainage wells to alleviate street flooding.
<br />Langan's scope of work included supervising five 150-ft
<br />test holes in the 120-acre Northeast Quadrant project area
<br />and five 200-ft- test holes inthe120-acre - Southwest
<br />Quadrant project area, evaluating geology and water
<br />quality (total dissolved solids), and performing a specific
<br />capacity test in potential production zones in the
<br />Southwest Quadrant project area. Langan has completed
<br />the Northeast Quadrant project and provided a reasonable
<br />assurance report that met the requirements of Chapter 62-
<br />528, Florida Administrative Code, as part of the permit
<br />package for the new stormwater drainage wells,
<br />
<br />Langan determined that the geological and total dissolved
<br />solids data in the Northeast Quadrant provided reasonable
<br />assurance that properly constructed production wells
<br />cased to -80 ft NGVD on the eastern side of the project
<br />area, to -100 ft NGVD in the central portion of the project
<br />area, and to -120 ft NGVD on the western side of the
<br />project area would meet the criteria for reasonable
<br />assurance.
<br />
<br />The specific capacity test consisted of pumping
<br />groundwater, and monitoring the flow rate, the drawdown,
<br />and the elapsed time. Langan recommend a design flow
<br />rate of 130 gallons per minute per foot of head for the
<br />Southwest Quadrant area.
<br />
<br />Langan is continuing to provide hydrogeological services
<br />to Calvin, Giordano & Associates, Inc. and the City of
<br />Hallandale Beach on the Southeast Quadrant with four
<br />additional test holes and an additional specific capacity
<br />test.
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<br />Page 2115
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