HYDRO29443

• Permit No: M1999002
• IBM Index Class Name: Hydrology
• Doc Date: 5/28/1999
• Doc Name: UIC INFO
• Media Type: D
• Archive: No

Underground Injection Control Branch Gmdance No. 5
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demonstration of part 1 and 2 (as limited), and provided clarifications and additional information based
comments received and the use of the test during the interim approval period. A discussion of and
procedures for conducting the RTS as a demonstration of part 1 of MI in Region 5 are outlined in
Attachment 3.
4. Water-Brine Interface Test (W-BIT)
On January 10, 1992, approval of the W-BIT was announced in the Federal Register at 1 109 et seq FR
No. 7. The test is valid only for Class III wells and only when construction and operating conditions ma
testing with the SAPT impractical. Although there are no special recommendations applicable in Regio
additional explanation of the basis for the test is provided in Attachment 4, and a full description of the
procedures for conducting the W-BIT is available in the above referenced FR Notice.
5. Ada Pressure Test
The Ada test is a variant of the SAPT. It is used to test wells which have perforations above the injectio
zone. It can be used to test the integrity of the casing above the perforations. To conduct the test gas
pressure is used to depress the liquid level to a point just above the perforations. The pressure is measut
over a period of time. If the pressure change is less than [he established limit, the well has mechanical
integrity.
6. Water-in-Annulus Test (WIAT) -
The WIAT was announced at 14678 et seq 54 FR No. 19 on April 12, 1989, for existing Class II wells 1
enhanced oil recovery in [he counties in which the Bradford oil field is located in New York and
Pennsylvania. Approval of the test was extended to similar wells in the Redhaw oil field in Ashland
County, Ohio. The test is used for wells which are constructed without long string casing. The level of
water near the top of the annulus between the surface casing, which protects all USDWs, and the injecti
tubing which is set on a formation packer and may have some cement on the [op of the packer, is obser~
under specified conditions. The presence and nature of relatively small leaks can be determined.
7. Casing Cementing Pressure/Single Point Resistivity Test (SPRY)
The SPRY for Class III uranium mining wells using in situ solution cased with nonconducting PVC or
fiberglass casing was announced at 4903 et seq 54 FR No. 19 on January 31, 1989. The test consists of
parts. The first part uses an observation of the pressure required to circulate cement during setting of tht
casing to evaluate cement placement and casing leaks. If the cement placement is acceptable the casing
tested by measurement of total electrical resistance between the logging tool's location in the well and a
grounding rod at the surface near the well head. Leaks are indicated as low resistance spikes. There are
wells in Region 5 for which this test is approved.
8. Dual Completion Monitoring Test (DCMT)
The DCMT is used to test wells which produce oil from perforations above an injection zone. The metF
was proposed on October 29, 1987, at 41591 et seq 52 FR No. 209. Final approval has not yet been grat
for the test. Several wells in Indiana and Michigan are tested by this method. The test includes moni[ori
of oil and water production, periodic liquid level measurements while producing and while not producit
The procedures for [his test are being re-examined. When finalized, an attachment describing the test in
detail will be added.
B. Mechanical Integrity Pursuant to 40 CFR § 146.8(a)(2)
Owner/operators have a choice of a number of methods for demonstrating that wells have part 2 of MI t
significant fluid movement into a USDW through vertical channels adjacent to the injection well bore).
conditions under which these tests can be used to best effect differ significantly; therefore, a listing of
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