ETTL Analytical Laboratory
Quality Assurance Program

ETTL's Analytical Laboratory operations conform
to a detailed Quality Assurance Program prepared
in accordance with EPA QAM-004/80.
Aspects of the Program include:

Log-In Process: Samples received use ETTL's or the client's chain-of-custody. Preservatives are verified at log-in time. Samples are stored according to specifications of the analytical method to be applied. (At right is Log-In Supervisor Janice Bates.)

Standard Operating Procedures have been pre-written by ETTL for all analytical and related procedures.

Quality Control Techniques are used that provide results determined to a point of known precision and accuracy. Techniques include: Method Blanks; Spiked Method Blanks; Matrix Spikes; Duplicates; and QC Check Samples.

Participation in External Quality Control Programs including the EPA Water Pollution (WP) series and a commercial quarterly test program. In addition, the Laboratory will analyze the client's QC check samples upon request.

Data Validation including multiple reviews to ensure results are correctly reported.

For more information on the ETTL Analytical Laboratory's QA Program,
contact Mike Cruce or Shane Simmons

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