Fourth 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 fourth quarter of 2009.
 

QA Sample Type

Number of Sample Results

Number of Results Meeting Criteria

Percentage Meeting Criteria

Spikes/Laboratory Control Samples

197

195

99.0

Field Duplicates

69

68

98.6

Laboratory Splits

29

29

100.0

Recounts

156

156

100.0

Blanks

79

77

97.5

Method Uncertainty

1780

1662

99.0



 

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Fourth Quarter 2009
INL Quarterly Site Environmental Report
Return to Index