(a) Environmental testing laboratory assessments shall be conducted:
  (1) before certification is granted, except as provided in §25.56 of this title (relating to Term of Certification); and
  (2) at least every three years after an environmental testing laboratory receives certification.
(b) Assessments may be announced or unannounced.

Source Note: The provisions of this §25.60 adopted to be effective September 12, 2002, 27 TexReg 8480