30 Tex. Admin. Code § 331.87
Current through Reg. 49, No. 44; November 1, 2024
Determination of a physical or chemical parameter in groundwater may be by chemical analysis of a sample or by field measurement by an instrument. Any field measurement of a groundwater parameter using instrumentation must be done using methods and instruments that yield a measurement that is at least equivalent in quality and sensitivity as a measurement determined by chemical analysis.
30 Tex. Admin. Code § 331.87