QA/QC to Validate Position and Attribute Accuracy for Stormwater Inventory
Track: Water, Wastewater, and Stormwater
Author(s): Robert Baffour, Chris Davis, Mike Walker, Marcus Reese

Over the past several years, municipalities mostly cities and counties have embarked on developing various GIS based stormwater inventory. This development is driven primarily by State and National regulations such as the EPA National Pollutant Discharge Elimination System (NPDES) and the Governmental Accounting Standards Board Statement 34 (GASB34). A review of most RFPs in the market reveals that most municipalities want the data on the ArcGIS platform and also want the data to a positional accuracy of 1 meter or submeter. This paper discusses a QA/QC procedure developed to validate position and attribute accuracy of a GPS based data collected by a private firm for a countys stormwater infrastructure inventory program. The paper discusses methodologies, results type of equipment needed to validate position accuracy. Finally, the paper discusses some critical ambiguities that can render the entire QA/QC plan valueless.

Robert Baffour
Southern Polytechnic State University
1100 South Marietta Pkwy
Marietta , Georgia 30060
United States
Phone: 678-915-5498
E-mail: rbaffour@spsu.edu

Chris Davis
2112 Monroe Drive
Atlanta , Georgia 30349
United States
Phone: 678-999-0173
E-mail: cdavis@cerm.com

Mike Walker
Dekalb County
Dekalb County
Decatur , Georgia 30349
United States
Phone: 678-999-0173
E-mail: mwalker@dekalb.ga.us

Marcus Reese
Corporate Environmental Risk Management
1420 Monro Drive Ste 110
Atlanta , Georgia 30342
United States
Phone: 6789990173
E-mail: mlreese@cerm.com