Texas Administrative Code

Texas Administrative Code

TITLE 30	ENVIRONMENTAL QUALITY
PART 1	TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
CHAPTER 25	ENVIRONMENTAL TESTING LABORATORY ACCREDITATION AND CERTIFICATION
SUBCHAPTER C	ENVIRONMENTAL TESTING LABORATORY CERTIFICATION
RULE §25.62	Proficiency Test Sample Analyses

(a) The operator of an environmental testing laboratory applying for initial certification shall ensure that laboratory personnel successfully analyze one proficiency test sample for each requested field of certification. The proficiency test samples shall be analyzed no more than 12 months prior to submitting the application.

(b) The operator of a certified environmental testing laboratory shall ensure that laboratory personnel analyze at least two proficiency test samples each year approximately six months apart. The operator of a certified environmental testing laboratory shall ensure that laboratory personnel successfully analyze one proficiency test sample for each field of certification each year. An environmental testing laboratory that does not meet the requirements of this subsection may participate in a supplemental proficiency test study.

(c) The executive director shall determine the environmental testing laboratory's certification status for all affected fields of certification within 60 days of determining that laboratory personnel failed to analyze proficiency test samples successfully according to this subsection.

(d) Proficiency test samples, if available, shall be purchased from a National Environmental Laboratory Accreditation Program-designated provider or a provider approved by the National Institute of Standards and Technology.

Source Note: The provisions of this §25.62 adopted to be effective September 12, 2002, 27 TexReg 8480; amended to be effective July 19, 2006, 31 TexReg 5640