Water Quality Trends in the Lower Hawthorn Aquifer of ...

Water Quality Trends in the Lower Hawthorn Aquifer of ...

18O) to Utilizing Utilizing Stable Stable Isotopes Isotopes ((22H H& & 18 O) to Identify Identify Water Water Types Types of of the the Floridan Floridan Aquifer Aquifer System System in in Southwest Southwest Florida Florida 20th Salt Water Intrusion Meeting June 24 , 2008 Authors:

Ed Rectenwald, PG MWH Americas Michael Bennett, PG Boyle Engineering Presentation Overview Overview Background Background Hydrogeology Geochemistry Hydrogeology Geochemistry Summary Conclusions Inorganics

Stable Isotopes Summary Conclusions Why Stable Isotopes? Identify different water bodies in the aquifer system Overview Background Hydrogeology Geochemistry Better understand groundwater circulation patterns Summary Conclusions Identify possible recharge and discharge areas Investigated Wells Five FAS test wells (TW) owned by the SFWMD

Overview Background Hydrogeology Geochemistry Summary Conclusions GLF-5 LAB-TW IWSD-TW I-75 TW BICY-TW Seven FAS monitor wells owned and operated by various Water Reclamation Facilities (WRF)

Zemel Road Landfill Burnt Store WRF North Fort Myers WRF Fort Myers Beach WRF North Collier Regional WRF South Collier Regional WRF Marco Island WRF Quantity of Wells Sampled Per Hydrogeologic Unit Overview Background Hydrogeology Geochemistry Summary Conclusions Upper Floridan Aquifer Nine wells Middle Confining Unit Thirteen wells Lower Floridan Aquifer Five wells Study Area

Overview Background Hydrogeology Geochemistry Summary Conclusions Southwest Florida Hydrogeology Overview Background Hydrogeology Geochemistry Summary Conclusions Hydrogeology Generalized Cross-Section Overview Background Hydrogeology Geochemistry

Summary Conclusions Chlorides and TDS in the FAS Aquifer Unit Cl- (mg/L) TDS (mg/L) UFA 625 to 15,244 1,530 to 26,900 MCU 500 to 19,281 1,500 to 35,100 LFA 18,155 to 20,790

35,100 to 37,200 Overview Background Hydrogeology Geochemistry Summary Conclusions Piper Tri-Linear Diagram Applying Frazees Geochemical Pattern Analysis Overview Background Hydrogeology Geochemistry Summary Conclusions Stable Isotopes in the FAS Aquifer Unit O 0/00

18 2 H 0/00 Overview Background Hydrogeology UFA -1.69 to -0.08 -8.79 to -1.53 MCU -1.92 to 0.55 -11.35 to 9.00 LFA 0.12 to 0.73

0.02 to 3.72 Average Rainfall -2.20 -7.60 Seawater 0.35 1.00 Geochemistry Summary Conclusions Relationship Between 2H and 18O Overview Background Hydrogeology Geochemistry

Summary Conclusions Spatial Distribution of Isotopes in the UFA -2.08 -10.46 -0.85 -4.54 -1.43 -6.24 -1.60 -7.71 Overview Background Hydrogeology Geochemistry -1.46 -8.79 Summary Conclusions

Legend 18 -1.69 -7.77 -1.14 -1.53 O/2H -1.19 -5.53 -0.08 -5.17 -1.26 -6.60 Spatial Distribution of Isotopes in the MCU -1.92 -5.36 -0.42 0.97

0.43 2.05 Overview -1.11 -11.35 -1.14 -8.06 Background Hydrogeology Geochemistry 0.48 0.18 Summary Conclusions 0.40 9.00 -1.59 -7.90

Legend 18 O/2H 0.55 5.33 -0.35 0.28 0.47 0.53 Spatial Distribution of Isotopes in the LFA -0.41 -1.67 Overview Background Hydrogeology Geochemistry 0.47 0.02

Summary 0.12 3.76 Conclusions Legend 18 0.65 1.16 O/2H 0.73 0.06 Summary Stable Isotopic Analysis UFA

Overview Background Hydrogeology Geochemistry MCU Summary Conclusions Meteoric in origin Different climate and/or meteoric water at time of recharge

Evaporation minimal at time of recharge Mixture of meteoric and seawater Concentrations are location dependent Hydraulic connection between UFA and LFA LFA Seawater in origin Recharged after the Last Glacial Period (~15,000 years) Conclusions Need to improve our understanding of the FAS Additional geochemical analyses Overview Background Hydrogeology Geochemistry Summary

Conclusions Radiocarbon Noble Gases Modeling the effects of sea level change Potentiometric head data of the FAS Additional inland monitor/test wells Questions?

Recently Viewed Presentations

  • Chapter 39 Serway & Jewett 6th Ed. Fig

    Chapter 39 Serway & Jewett 6th Ed. Fig

    Chapter 39 Serway & Jewett 6th Ed. Comparing Stationary and Moving Mirrors Comparing Stationary and Moving Mirrors Fig 39-1a, p.1246 Fig 39-1b, p.1246 Fig 39-3, p.1248 Latticework of Clocks Send out light pulse from reference clock at t = 12...
  • Databases (bases de données)

    Databases (bases de données)

    The principal themes of this presentation. An introduction to my research into the personal work system and personal working model of knowledge workers. The research question: What is the contribution of personal information management systems PIMS to the Working Model...
  • Unit 2.3 Robust Programs Powerpoint

    Unit 2.3 Robust Programs Powerpoint

    How can ROBUST programs be created that are defensive against hacks and attacks. How can this be implemented in the design stage of the program development? Learning Objectives. ... Ensuring the code is robust in validating the data entered.
  • Scheduling Data-Intensive Applications on Grids

    Scheduling Data-Intensive Applications on Grids

    WW Grid SensorGrid: A new Cyberinfrastructure Integrating Sensor Network and Grid Computing for e-Science Applications Dr. Rajkumar Buyya Grid Computing and Distributed Systems (GRIDS) Lab.
  • Prosodic structure in Chinese characters, revisited

    Prosodic structure in Chinese characters, revisited

    Morphology and prosody. The semantic component in a semantic-phonetic character has several affix-like properties. Bound, closed class, abstract function, … (Myers, 2019) ... Only half of the examples show identity: ...
  • Chapter 5 The Working Cell PowerPoint Lectures Campbell

    Chapter 5 The Working Cell PowerPoint Lectures Campbell

    5.5 Water balance between cells and their surroundings is crucial to organisms. The cell walls of plant cells, prokaryotes, and fungi make water balance issues somewhat different. The cell wall of a plant cell exerts pressure that prevents the cell...
  • The Physics of Tennis - Florida State University

    The Physics of Tennis - Florida State University

    The Physics of Tennis ... applied to the ball Many types of racquets Coefficient of Restitution Main factor in the formation of a tennis racquet Ratio of rebound height to incident height of the ball COR varies when the ball...
  • Environmental Health Institute University of Rochester ...

    Environmental Health Institute University of Rochester ...

    Closure Activity Each team will develop an informational brochure: symptoms of autism diagnosis of autism possible causes of autism treatment of autism Environmental Health Institute University of Rochester Medical Center Autism: A Pervasive Dilemma Alan Ascher Coordinating Mentor NYS Biology-Chemistry...