New Mexico Administrative Code
Title 20 - ENVIRONMENTAL PROTECTION
Chapter 6 - WATER QUALITY
Part 2 - GROUND AND SURFACE WATER PROTECTION
Section 20.6.2.5207 - MONITORING REQUIREMENTS FOR CLASS I NON-HAZARDOUS WASTE INJECTION WELLS AND CLASS III WELLS
Universal Citation: 20 NM Admin Code 20.6.2.5207
Current through Register Vol. 35, No. 6, March 26, 2024
A. The discharger shall demonstrate mechanical integrity for each Class I non-hazardous waste injection well or Class III well at least once every five years during the life of the well pursuant to Section 20.6.2.5204 NMAC.
B. Additional Monitoring Requirements for Class I non-hazardous waste injection wells.
(1) The discharger shall provide analysis of
the injected fluids at least quarterly or, if necessary, more frequently to
yield data representative of their characteristics.
(2) Continuous monitoring devices shall be
used to provide a record of injection pressure, flow rate, flow volume, and
pressure on the annulus between the tubing and the long string of
casing.
(3) The discharger shall
provide wells within the area of review as required by the discharge permit to
be used by the discharger to monitor pressure in, and possible fluid movement
into, ground water having 10,000 mg/l or less TDS except for such ground waters
designated pursuant to Section 20.6.2.5103 NMAC. This Section does not require
monitoring wells for Class I non-hazardous waste injection wells unless
monitoring wells are necessary due to possible flow paths within the area of
review.
C. Additional Monitoring Requirements for Class III wells.
(1) The discharger shall provide an analysis
or description, whichever the secretary requires, of the injected fluids at
least quarterly or, if necessary, more frequently to yield representative
data.
(2) The discharger shall
perform:
(a) Appropriate monitoring of
injected and produced fluid volumes by whichever of the following methods the
secretary requires:
(i) Recording injection
pressure and either flow rate or volume every two weeks; or
(ii) Metering and daily recording of fluid
volumes;
(b) Monitoring
every two weeks, or more frequently as the secretary determines, of the monitor
wells, required in Subsection C of Section 20.6.2.5205 NMAC for:
(i) Water chemistry parameters used to detect
any migration from the injection zone;
(ii) Fluid levels adjacent to the injection
zone; and
(c) Other
necessary monitoring as the secretary for good cause may require to detect
movement of fluids from the injection zone into ground water having 10,000 mg/l
or less TDS except for fluid movement approved pursuant to Section 20.6.2.5103
NMAC.
(3) With the
approval of the secretary, all Class III wells may be monitored on a well field
basis by manifold monitoring rather than on an individual well basis. Manifold
monitoring to determine the quality, pressure, and flow rate of the injected
fluid may be approved in cases of facilities consisting of more than one Class
III well, operating with a common manifold, provided that the discharger
demonstrates that manifold monitoring is comparable to individual well
monitoring.
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