Second Quarter 2009
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 second quarter of 2009.

QA Sample Type

Number of Sample Results

Number of Results Meeting Criteria

Percentage Meeting Criteria

Spikes/Laboratory Control Samples

139

137

98.6

Field Duplicates

66

65

98.5

Laboratory Splits

33

33

100.0

Recounts

181

181

100.0

Blanks

72

72

100.0

Method Uncertainty

1798

1781

99.1

 

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Second Quarter 2009
INL Quarterly Site Environmental Report
Return to Index