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Samples of ERG's GPS
Radiological Survey Output:
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Radiological Survey Data
Using GIS the different count rate ranges are assigned a unique
symbol or color to assist in identifying contamination boundary.
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Radiological Survey
Data Contours
Using GIS the individual counts are use to create contours of
the survey data.
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Survey Data Averaged
The survey area is disected into 10m x 10m squares
and the counts in each square are averaged.
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Sample Locations
Individual sample locations can be surveyed
and unique symbols or colors assigned for result ranges. This
data can then be compared to radiological survey.
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Click on the links below to download the images
above in 8.5" x 14" (Figs 1 to 3) or 8.5" x 11"
(Fig 4) in PDF format.
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Our goal is to save you remediation costs
through:
- Developing
cost-effective planning documents.
- Use
of GPS-based radiological surveys.
- Providing
on-site laboratory capability.
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We are recognized as a pioneer in GPS-based
radiological surveys to support D&D Projects:
- ERG
began using GPS in 1994.
- ERG
has conducted surveys at numerous sites.
- ERG
has successfully cleaned up multiple sites with acreage in excess
of 500 acres.
- ERG
has obtained approval by the NRC to use gamma data as primary
verification data
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We work for you in obtaining regulatory approval
for using gamma surveys as the primary basis for verification
through:
- Studies
to develop gamma-radionuclides in soil correlations.
- Statistically-based
soil sampling plans.
- Preparing
Verification Plan for regulatory agency approval
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Phases
of Radiological Surveys Support:
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Site Characterization
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Surface soil contamination
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Data presentation within hours
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Gamma survey for up to 25 acres per day
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Establish grids without land surveyors
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Document soil sampling or auger locations
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Radiological Control Monitoring
- Use data maps for establishing contaminant boundaries
- Use GPS to set stakes at boundary lines
- GPS radiological surveys quickly document decontamination
progress
- Replace old data with new data in removal areas for a
final status survey
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Final Verification
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High density gamma data presentations provide
high degree of assurance that property has been decontaminated
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High density gamma data may serve as principal
method of verification when coupled with radionuclide-in-soil
correlations
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