Third Quarter 2011
INL Quarterly Site Environmental Report
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Quality Assurance

The ESER Quality Assurance Program consists of five ongoing tasks which measure:

  1. method uncertainty
  2. data completeness
  3. data accuracy, using spike, performance evaluation and laboratory control samples
  4. data precision, using split samples, duplicate samples and recounts
  5. presence of contamination in samples, using blanks.

Sample results are compared to criteria described in the Quality Assurance Project Plan for the INL Site Offsite Environmental Surveillance Program (GSS 2011). The following table summarizes the results of the quality assurance program for the third quarter of 2011.

QA Sample Type

Number of Sample Results

Number of Results Meeting Criteria

Percentage Meeting Criteria

Spikes/Laboratory Control Samples

193

193

100.0

Field Duplicates

69

66

95.6

Laboratory Splits

36

36

100.0

Recounts

221

221

100.0

Blanks

63

60

95.2

Method Uncertainty

1770

1739

98.2
       

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Third Quarter 2011
INL Quarterly Site Environmental Report
Return to Index