{ 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
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{ Mapping & Analysis of Wastewater Spills in the Barton Springs and Southern Segments of the Edwards Aquifer Project Manager: Katie Tritsch GIS Analyst:
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Mapping & Analysis of Wastewater Spills in the
Barton Springs and Southern Segments of the Edwards
Aquifer
Project Manager: Katie TritschGIS Analyst: Kevin TaylorWeb Design/GIS Analyst: Eric SchroederGIS Analyst: Katie Steele
Presented for: Greater Edwards Aquifer Alliance
Background Work CompletedCurrent WorkFuture WorkConclusion
Progress Report Overview
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
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
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
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:
Data analysis & interpretation
Work Completed:Final Deliverables
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
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:Data analysis & interpretation
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: Interactive mapping
Adobe Dreamweaver
We are in exploratory phase due to little experience
Watching tutorials to help us navigate the Dreamweaver software
Current Work: Website publication
Geocoding Williamson County within the next week
Promptly move on to following portions of the project
Future Work: Data acquisition & processing
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: Data analysis & interpretation
Deciding which software to use within the next couple weeks
Formatting data to be more user-friendly and inputting it into chosen software