Current through Register Vol. 35, No. 18, September 24, 2024
A.
Determination of hydrogen sulfide concentration.
(1) Each person shall determine the hydrogen
sulfide concentration in the gaseous mixture within wells, facilities or
operations either by testing (using a sample from each well, facility or
operation); testing a representative sample; or using process knowledge in lieu
of testing. If the person uses a representative sample or process knowledge,
the concentration derived from the representative sample or process knowledge
shall be reasonably representative of the hydrogen sulfide concentration within
the well, facility or operation.
(2) The person shall conduct the tests used
to make the determination referred to in Paragraph (1) of Subsection A of
19.15.11.8 NMAC in accordance with applicable ASTM or GPA standards or by
another division-approved method.
(3) If the person conducted a test prior to
January 31, 2003 that otherwise meets the requirements of Paragraphs (1) and
(2) of Subsection A of 19.15.11.8 NMAC, new testing is not required.
(4) If a change or alteration may materially
increase the hydrogen sulfide concentration in a well, facility or operation,
the person shall make a new determination in accordance with 19.15.11
NMAC.
B. Concentrations
determined to be below 100 ppm. If the hydrogen sulfide concentration in a
given well, facility or operation is less than 100 ppm, the person is not
required to take further actions pursuant to 19.15.11 NMAC.
C. Concentrations determined to be above 100
ppm.
(1) If the person determines the
hydrogen sulfide concentration in a given well, facility or operation is 100
ppm or greater, then the person shall calculate the radius of exposure and
comply with applicable requirements of 19.15.11 NMAC.
(2) If calculation of the radius of exposure
reveals that a potentially hazardous volume is present, the person shall
provide results of the hydrogen sulfide concentration determination and the
calculation of the radius of exposure to the division. For a well, facility or
operation, the person shall accomplish the determination, calculation and
submission 19.15.11.8 NMAC requires before operations begin.
D. Recalculation. The person shall
calculate the radius of exposure if the hydrogen sulfide concentration in a
well, facility or operation increases to 100 ppm or greater. The person shall
also recalculate the radius of exposure if the actual volume fraction of
hydrogen sulfide increases by a factor of 25 percent in a well, facility or
operation that previously had a hydrogen sulfide concentration of 100 ppm or
greater. If calculation or recalculation of the radius of exposure reveals that
a potentially hazardous volume is present, the person shall provide the results
to the division within 60 days.
