First 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 first quarter of 2008.

 

QA Sample Type

Number of Sample Results

Number of Results Meeting Criteria

Percentage Meeting Criteria

Spikes/Laboratory Control Samples

231

223

96.5

Field Duplicates

64

57

89.1

Laboratory Splits

18

18

100

Recounts

178

178

100.0

Blanks

66

66

100

Method Uncertainty

1701

1673

98.4

 

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First Quarter 2008
INL Quarterly Site Environmental Report
Return to Index