Third Quarter 2008
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 (Stoller 2007). The following table summarizes the results of the quality assurance program for the third quarter of 2008.

 

QA Sample Type

Number of Sample Results

Number of Results Meeting Criteria

Percentage Meeting Criteria

Spikes/Laboratory Control Samples

271

261

96.3

Field Duplicates

75

70

93.3

Laboratory Splits

31

31

100.0

Recounts

182

182

100.0

Blanks

68

67

98.5

Method Uncertainty

1773

1701

95.9

 

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Third Quarter 2008
INL Quarterly Site Environmental Report
Return to Index