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Glossary

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A glossary of Triad-related technical terms.

Select a glossary term from the list below, or select a letter to see terms starting with that letter. You may also use the Glossary search box at the top of the page, or print out the entire glossary by clicking the "Printable Glossary" link above.


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Grab Sample
Granulometric Factor (g)
Gray Region (as defined as part of the decision performance goal diagram (DPGD) supporting statistical hypothesis testing per EPA's DQO guidance)
Grouping and Segegration Error (GE)



Glossary Purpose and Sources

The Glossary serves 2 roles: 1) providing clarity on how terms are defined for use within the Triad Resource Center; and 2) acknowledging where terminology may be ambiguous or conflicting due in usage by the environmental cleanup community. Where available and applicable, definitions or descriptions developed by consensus or professional organizations are preferred by the Triad Steering Committee and are referenced in this Glossary. Access to the sources quoted in this glossary is indicated in the table below:

IUPAC Compendium of Chemical Terminology, 2nd Edition, 1997
http://www.chemsoc.org/chembytes/goldbook/

NELAC Program Policy and Structure; Appendix A; June 5, 2003
http://www.nemc.us/epa12/2003standards.html

USEPA QA/G-1 Nov 02 EPA/240/R-02/008
http://www.epa.gov/quality/qs-docs/g1-final.pdf

USEPA QA/G-4 Aug 00 EPA/600/R-96/055
http://www.epa.gov/quality/qs-docs/g4hw-final.pdf

USEPA QA/G-5 Dec 02 EPA/240/R-02/009
http://www.epa.gov/quality/qs-docs/g5-final.pdf

USEPA QA/G-5S Dec 02 EPA/240/R-02/005
http://www.epa.gov/quality/qs-docs/g5s-final.pdf

USEPA QA/G-8 Nov 02
http://www.epa.gov/quality/qs-docs/g8-final.pdf

USEPA SW-846 Jul 1992 Chapter 1, Section 5.0
http://www.epa.gov/epaoswer/hazwaste/test/pdfs/chap1.pdf

USEPA Environmental Monitoring and Assessment Program (EMAP) QA Glossary
http://www.epa.gov/emap/html/pubs/docs/resdocs/qa_terms.html

USEPA Guidance for Obtaining Representative Laboratory Analytical Subsamples from Particulate Laboratory Samples EPA/600/R-03/027; Nov 2003
http://www.epa.gov/esd/tsc/images/particulate.pdf



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