|(a) All sample collection shall be conducted according to recommendations
found in the latest edition of Standard Methods for
the Examination of Water and Wastewater (prepared and published jointly
by the American Public Health Association, the American Waterworks Association,
and the Water Pollution Control Federation), or the Environmental Protection
Agency manual entitled Methods for Chemical Analysis
of Water and Wastes (1979), or the Environmental Protection Agency
manual entitled Biological Field and Laboratory Methods
for Measuring the Quality of Surface Waters and Effluents (1973).
(b) Sample containers, holding times, and preservation methods
shall meet requirements specified in 40 Code of Federal Regulations (CFR)
(c) Effluents shall be analyzed according to test methods specified
in 40 CFR Part 136 or more recent editions of Standard
Methods for the Examination of Water and Wastewater than those cited
in Part 136.
(d) Flow measurements, equipment, installation, and procedures
shall conform to those prescribed in the Water Measurement Manual, United
States Department of the Interior Bureau of Reclamation, Washington, D.C.,
or methods that are equivalent as approved by the executive director.
(e) Laboratories shall routinely use and document intralaboratory
quality control practices as recommended in the latest edition of the Environmental
Protection Agency manual entitled Handbook for Analytical
Quality Control in Water and Wastewater Laboratories. These practices
will include the use of internal quality control check samples.
(f) The sampling and laboratory facilities, data, and records
of quality control are subject to periodic inspection by commission personnel.
Should the procedures specified in this section not be suitable to any particular
situation, nonstandard sampling and testing techniques may be employed in
accordance with the procedures outlined in §319.12 of this title (relating
to Alternate Sampling and Laboratory Testing Methods).