1. { Mapping & Analysis of Wastewater Spills in the Barton Springs and Southern Segments of the Edwards Aquifer Project Manager: Katie Tritsch GIS Analyst: Kevin Taylor Web Design/GIS Analyst: Eric Schroeder GIS Analyst: Katie Steele Presented for: Greater Edwards Aquifer Alliance

2.  Background  Work Completed  Current Work  Future Work  Conclusion Progress Report Overview

3.   Map and analyze wastewater spills that have occurred in Texas Commission on Environmental Quality (TCEQ) Region 11 within the last five years.   Geovisualization of this data to enhance GEAA’s understanding of:   Distribution   Gallon amount   Frequency   Causes of wastewater spills   Interactive Mapping:   Enhance public’s understanding and concern   Potential health affects due to polluting groundwater reserves Background: Purpose

4.  Edwards Aquifer  Recharge and Contributing zones  Barton Springs & Southern segments  Priority counties: Travis and Hays  Next county: Williamson  Spills are 500 gallons or more  Occurrence over the past five years  2007-2012 Background: Scope

5.   TCEQ wastewater spill data   1,800 spill records total   Sorted by county and date   New Data Tables   Separate table for Hays County and Travis County   New columns: full street address, city, zip code, cause of spill, and action taken to remedy the spill   537 records total were processed   Some left out due to non-specific or nonexistent locations   Hays (93) and Travis (344), totaling in 437 spill records mapped. Work Completed: Data Acquisition & Processing

6.   Original hypothesis is incorrect   Certain MUDs do not contain more spills   Stronger correlation between spills and population.   Also, not many spills on the recharge or contributing zone of the aquifer.   Combining our analyses to give a general assessment of the impact of population growth and development on wastewater spills. Work Completed: Work Completed: Data analysis & interpretation

7. Work Completed: Work Completed: Final Deliverables

10.   Completed: Hays and Travis counties   Next: Williamson County   Due to client’s interest and analysis challenges   Should only take a couple days Current Work: Data Acquisition Processing Current Work: Data Acquisition & Processing

11.   Williamson County spills map   Sequential maps for Travis County   Categorical Map   Map of spills based on spill causes   Developing ideas for vulnerability analysis   Kernel density, weighted by spill volume   Population density map   Combined qualitative analysis for Final Report Current Work: Current Work: Data analysis & interpretation

12.   Currently cleaning up spill data attribute tables in ArcMap   When displayed in the interactive map software, the location, duration, volume, and causes will be easier to read.   Interactive Mapping Options:   Manifold   Google Earth   Potentially Open Source software Current Work: Current Work: Interactive mapping

13.   Adobe Dreamweaver   We are in exploratory phase due to little experience   Watching tutorials to help us navigate the Dreamweaver software Current Work: Current Work: Website publication

14.   Geocoding Williamson County within the next week   Promptly move on to following portions of the project Future Work: Data acquisition & processing

15.   Executing point pattern analysis (Kernel) and population density calculations   Creating static maps – Categorical by cause, Kernel density, population density, Williamson spills   Writing out our analysis   Improving the understanding of the context   Errors/limitations   Shortcomings and challenges   Opportunities for further research Future Work: Future Work: Data analysis & interpretation

16.   Deciding which software to use within the next couple weeks   Formatting data to be more user-friendly and inputting it into chosen software   Embedding interactive map onto website Future Work: Future Work: Interactive mapping

17.   Continuing to work on website publication until Week 10   Slow yet steady progression with Dreamweaver   Anticipating a well-designed final product Future Work: Future Work: Website publication

18.   Integrating data into interactive map   Perfecting static maps   Wrapping up website publication   Putting together final report   Designing and printing a professional poster   Creating a CD of all documents, data, and metadata for GEAA’s future use Future Work: Future Work: Final Deliverables

19. Schedule Revisions… ARI Revised Timetable Week 1Week 2Week 3Week 4Week 5Week 6Week 7Week 8Week 9Week 10* Start date Oct. 1Oct. 8Oct. 15Oct. 22Oct. 29Nov. 5Nov. 12Nov. 19Nov. 26 Dec. 3 - Dec. 10 Data Acquisition & Processing Data Analysis & Interpretation Interactive Mapping Website Publication Final Deliverables

20.   Overall project is moving along well despite unsuspected challenges   Looking forward to getting a fuller picture of the recharge and contributing zones of the aquifer with the addition of Williamson County   Continued effort in finding correlation between wastewater spills and an external factor (population growth, development)   Final Deliverables will be ready on time   Confident of our success at increasing understanding of the context of spills in the Barton Springs and Southern segments of the Edwards Aquifer. Conclusion

21. Questions?