The Texas Risk Reduction Program (TRRP) administered by the Texas Commission on Environmental Quality requires that laboratory data are reviewed and a Data Usability Summary (DUS) is generated. The DUS ensures that data are useable for the intended purpose and identifies any concerns for bias in the data. The DUS summarizes and documents the laboratory results and the review.

This interactive workshop will help data users understand TRRP Reportable Data concepts and some Supporting Data concepts. Examples will be presented for data generation and detailed definitions are discussed. Workshop review and discussion will include TRRP nomenclature (MQL, SDL, LRC, J and U Data Qualifiers, etc), analytical calibration, laboratory quality control (QC) samples and laboratory QC procedures. All of these concepts are essential for understanding potential analytical bias associated with laboratory results.

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