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Track: Environmental Management
Halkard Mackey
Westinghouse Savannah River Company
WSRC, 773-42A Building
Aiken, SC 29808
Telephone: 803-725-5322
Fax: 803-725-7673
E-mail: halcard.mackey@srs.gov
Lynne Christel
Mapping of Potential Waste Sites within a Reservoir Using Historical Photography and Geographic Information System (GIS) Technology
Defining Issue: Need to map potentially contaminated waste units that were created during the construction of a cooling lake and that would be exposed if the cooling reservoir were drained following shutdown of the cooling water supply system to the reactor. GIS Solution: Historical photography was scanned, mosaicked, georegistered, and photointerpreted, and the waste units were digitized along with relevant information into a common GIS database. Methodology: Low altitude, vertical 9 by 9 inch photography taken just prior to filling of the cooling reservoir was scanned at submeter resolution, mosaicked, and processed with GPS control points from field locations to create a Digital Elevation Model (DEM) of the cooling lake. Features such as ash piles, vegetation burial pits, and low-level contaminated soil disposal areas were identified and "heads up" digitized into a common GIS database. Information on type, size, location, and elevation was also recorded. A total of 740 sites, covering a total of
34 hectares in the 405 hectare cooling lake, were mapped. These data will provide guidance for development of sampling and remediation plans if the lake were to be drained following cooling water system shutdown. Software: Vision International, Inc., Softplotter, ERDAS Imagine 8.2, Esri ArcInfo and ArcView
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