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PDFWAC 173-50-120

Accreditation categories.

(1) Environmental laboratories are accredited within one or more of the matrix groups defined in WAC 173-50-040. Within each matrix group, accreditation is granted within the following broad categories:
• General chemistry;
• Trace metals;
• Organics I;
• Organics II (Category II methods use mass spectrometer detectors);
• Microbiology;
• Radiochemistry;
• Bioassay;
• Immunoassay; and
• Physical.
Within these categories, laboratories are specifically accredited for well-defined parameters, such as, but not limited to, those suggested in the procedural manual, using specific analytical methods or sampling techniques chosen by the applying laboratory.
(2) The scope of accreditation accompanying the accreditation certificate indicates the parameters for which the laboratory is accredited, and any applicable qualifications, such as interim or provisional accreditation.
(3) The scope of accreditation also indicates the matrix groups within which each parameter applies. Those matrix groups may include, but are not limited to:
• Nonpotable water;
• Drinking water;
• Solid and chemical materials; and
• Air and emissions.
[Statutory Authority: RCW 43.21A.230, 43.20.050 and 2009 c 564 § 301. WSR 10-17-032 (Order 09-09), § 173-50-120, filed 8/9/10, effective 9/9/10. Statutory Authority: RCW 43.21A.230. WSR 02-20-090 (Order 01-12), § 173-50-120, filed 10/1/02, effective 11/1/02; WSR 93-20-011 (Order 92-53), § 173-50-120, filed 9/22/93, effective 10/23/93; WSR 90-21-090 (Order 90-21), § 173-50-120, filed 10/19/90, effective 11/19/90; WSR 89-10-001 and 90-07-017 (Order 89-1 and 89-1A), § 173-50-120, filed 4/20/89 and 3/13/90, effective 4/13/90.]
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