(a) Generators who use analytical data to classify their waste pursuant to §335.509 of this title (relating to Waste Analysis) must maintain documentation of their sampling procedures in accordance with this section and 40 Code of Federal Regulations §262.11(f) as adopted under §335.53 of this title (relating to General Standards Applicable to Generators of Hazardous Waste).
(b) The sampling documentation must, at a minimum, include the following:
  (1) dates samples were collected;
  (2) a description of the site or unit from which the sample is taken and sampling location(s) at the site unit;
  (3) sample methods and sample equipment utilized; and
  (4) description of sample handling techniques, including containerization, preservation, and chain of custody.
(c) Generators shall document all the information listed in subsection (b) of this section, and shall retain copies on-site in accordance with §335.513 of this title (relating to Documentation Required).
(d) Generators who have existing sampling documentation, which includes the information listed in subsection (b) of this section, do not need to prepare any new documentation specifically for this section.

Source Note: The provisions of this §335.510 adopted to be effective November 27, 1992, 17 TexReg 8010; amended to be effective February 24, 1994, 19 TexReg 1042; amended to be effective May 30, 1995, 20 TexReg 3722; amended to be effective February 3, 2022, 47 TexReg 318