Presentation Abstract
	QA/QC of Underground Data Collection
	Russell Koenig and Ronald M. Howard, Jr., DLZ Inc.
	Thursday, September 11, 2008 - 2:45 PM - Track 4
	Many GIS projects use point information as it has been directly collected in the field. While the 3-dimensional coordinate collected during this process is sufficient for most inventory purposes, it is below the positional accuracy standard required for sewers and drains. The inventory of the existing sewer system as needed for the design of the I-70/I-70 improvements in Columbus merged the speed and technology of GIS data collection with the accuracy of survey data to produce a complete sewer network. Additionally, the use of electronic GIS data collection greatly improved the speed of the QA/QC process, resulting in a better and more efficient product.
	Presentation Powerpoint (7.4MB)