HYDRO28482

• Permit No: M1999002
• IBM Index Class Name: Hydrology
• Doc Date: 2/9/2000
• Doc Name: FINAL AREA PERMIT VIC ISSUED TO AM SODA P 1-82
• Media Type: D
• Archive: No

all class I and II wells. Although there are several methods
allowed for determining mechanical integrity, the principal
method involves running a pressure test of the tubing/casing
annulus. Region VIII's procedure for running a pressure test is
intended to aid UIC field inspectors who witness pressure tests
for the purpose of demonstrating that a well has Part I of
Mechanical Integrity. The guidance is also intended as a means
of informing operators of the procedures required for conducting
the test in the absence of an EPA inspector.
Pressure Test Descrivtion
Test Freauencv
The mechanical integrity of an injection well must be
maintained at all times. Mechanical integrity pressure tests are
required at least every five (5) years. If for any reason the
tubing/packer is pulled, however, the injection well is required
to pass another mechanical integrity test prior to recommencing
injection regardless of when the last test was conducted. The
Regional IIIC program must be notified of the workover and the
pro~oaed date of the aressure test. The well's test cycle would
then start from the date of the new teat if the well passes the
teat and documentation is adequate. Tests may be required on a
more frequent basis depending on the nature of the injectate and
the construction of the well (see Section guidance on MITs for
wells with cemented tubing and regulations for Class I wells).
Region VIII's criteria for well testing frequency is as
follows:
1. Class I hazardous waste injection wells; initially [40
CFR 146.68(d)(1)] and annually thereafter;
Class I non-hazardous waste injection wells; initially
and every two (2) years thereafter, except for old
permits (such as the disposal wells at carbon dioxide
extraction plants which require a test at least every
five years);
3. Class II wells with tubing, casing and packer;
initially and at least every five (5) years thereafter;
4. Class II wells with tubing cemented in the hole;
initially and every one (1) or two (2) years thereafter
depending on well specific conditions (See Region VIII
UIC Section Guidance #`36);
5. Class II wells which have been temporarily abandoned
(TAd) must be pressure tested after being shut-in for
two years; and
6. Class III uranium extraction wells; initially.