city of sunrise floridan aquifer test program searching for sustainable water quality and yield n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
City of Sunrise Floridan Aquifer Test Program Searching for Sustainable Water Quality and Yield PowerPoint Presentation
Download Presentation
City of Sunrise Floridan Aquifer Test Program Searching for Sustainable Water Quality and Yield

Loading in 2 Seconds...

play fullscreen
1 / 30

City of Sunrise Floridan Aquifer Test Program Searching for Sustainable Water Quality and Yield - PowerPoint PPT Presentation


  • 103 Views
  • Uploaded on

City of Sunrise Floridan Aquifer Test Program Searching for Sustainable Water Quality and Yield. Imagine the result. Today’s Presenter. David Smith, ARCADIS Plantation, Florida David.Smith2@arcadis-us.com 954-422-2514. Credits. Rod Miller, Marc Killingstad, ARCADIS

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'City of Sunrise Floridan Aquifer Test Program Searching for Sustainable Water Quality and Yield' - victor-key


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
city of sunrise floridan aquifer test program searching for sustainable water quality and yield

City of Sunrise Floridan Aquifer Test Program Searching for Sustainable Water Quality and Yield

Imagine the result

today s presenter
Today’s Presenter
  • David Smith, ARCADIS
  • Plantation, Florida
  • David.Smith2@arcadis-us.com
  • 954-422-2514

Credits

Rod Miller, Marc Killingstad, ARCADIS

Susan Bodmann, Neil Johnson, MWH

Bob Romeo, Guarionex De Los Santos, Tim Welch, City of Sunrise

Dan Ringdahl, Florida Design Drilling

outline
Outline

The Challenge

Evaluation

  • Site Selection
  • DIW Evaluation
  • Groundwater Modeling
  • Test Wells SGF-1 and SGF-2

Sustainability

the challenge1
The Challenge…
  • Permitting (SFWMD Permit mandate)
  • Well Construction (locations)
  • Hydrogeologic
well construction
Well Construction

Location Issues

  • Land ownership / easements
  • Construction zone
  • Wellhead appurtenances, raw water piping
  • Disposal of test waters
  • Hydrogeological factors
its not just a hole in the ground
Its not just a “hole in the ground”
  • Artesian head, approximately 40 feet above ground level
  • Potential migration of brackish groundwater into overlying fresh water Surficial Aquifer during construction if:
    • Inadequate intermediate casing strings
    • Uncontrolled surface releases
  • Variable aquifer characteristics
    • Permeability
    • Water quality
    • SDI
  • Resource sustainability
    • Withdrawal (regional and localized well impacts)
    • Salinity increases (up-coning)
slide9

Vertical changes in salinity reflect historic “flushing” of the aquifer….

Hydrogeologic Framework

slide11

Now “freshened”, but reversals in salinity can occur above the lowermost USDW…

Hydrogeologic Framework

Less Brackish

Less Brackish

site selection
Site Selection

Six Production well sites selected from more than 25 sites evaluated

Two locations chosen for test/production wells

SGF-2

SGF-1

diw evaluation sunrise injection well complex
DIW Evaluation (Sunrise Injection Well Complex)
  • Increased understanding of the Floridan aquifer
  • Availability of an existing extensive monitor zone network
injection well evaluation
Injection Well Evaluation

Opportunities for knowledge from construction of Class I injection well systems

groundwater modeling
Groundwater Modeling

Refinements to an existing multi-layer variable density model (SEAWAT)

groundwater modeling1
Groundwater Modeling
  • A tool to help quantify potential hydraulic impacts and changes in water quality
  • Model Outputs:
        • Water level heads, drawdowns and vertical flux between model layers
        • Predicted water level changes in the IW monitor zone complex
  • Application:
        • Optimize well spacing
        • Production interval
        • Refine APT’s
groundwater modeling2
Groundwater Modeling

12 MGD withdrawal from the UFA

groundwater modeling3
Groundwater Modeling

Predicted head changes

  • All permitted tri-county withdrawals
  • During planned APT’s
test wells sgf 1 and sgf 2
Test wells SGF-1 and SGF-2

Two test/production wells:

  • Final casings 16-inch ID FRP, 1,014 feet bls (SGF-2)
  • Pilot hole drilling max depth 1,863 feet bls (SGF-2)
  • Extensive testing
  • UFA Production interval selected
test wells sgf 1 and sgf 21

Testing included:

  • Lithologic analysis
  • Drill Stem water quality
  • Specific capacity testing, incl. shut-in tests
  • Geophysical logging, formation and fluid
  • Creative Packer testing (combination of annulus pumping, drill stem pumping, straddle packer geometries)
  • SDI and sand testing
  • Aquifer performance testing (step drawdown and constant rate with pumping of each and both production wells with extensive monitoring)
Test wells SGF-1 and SGF-2
test wells sgf 1 and sgf 22
Test wells SGF-1 and SGF-2

Salinity reversals more extreme than expected

test wells sgf 1 and sgf 23
Test wells SGF-1 and SGF-2

UFA and APPZ observed, but other more permeable flow intervals identified between these zones.

test wells sgf 1 and sgf 24
Test wells SGF-1 and SGF-2

Due to the discrete production interval with appropriate WQ, lower permeability and storage than desired.

sustainability1
Sustainability
  • Aquifer recharge
        • Is natural recharge sufficient to meet the current and projected withdrawals from this aquifer?
        • Is Managed Aquifer Recharge (MAR) required?
  • Well construction
        • Interconnection of multiple aquifer zones – bad practice or not important?
  • Water Quality
        • Salinity increases – how much, when?