GENERAL53537

• Permit No: M1999002
• IBM Index Class Name: General Documents
• Doc Date: 4/25/2002
• Doc Name: Step Pressure Tests on 6 Wells
• From: American Soda LLP
• To: EPA
• Media Type: D
• Archive: No

AMERICAN Ed Cooley
SODA L L P Environmental Health..
~ & Safety Manager
2717 County Road 215 RECEI V International Telephone +1 (970] 285-6500
Parachute, CD 81635 ED Toll Free Customer Service [877) SDDA ASh
- Toll Free Customer Service (866) 4 BICARP
APR 2 5 2002 General Facsimile (970) 285-639;:
Customer Service Facsimile (970) 285-048Y.
Division of Minerals and Geology
Tuesday, April 16, 2002 ENV. 031.02
Mr. Dan Jackson
U. S. Environmental Protection Agency
Region VIII
- Mail Code BPWGW
999 18th Street, Suite 500
Denver, CO 80202-2466
Specialist: ESC
emvt#: M1999002 Confidential?: N
Class:~~~ Dpi Type/Seq,.,:'/
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Dear Mr. Jackson:
In reference to you letter dated February 11, 2002, approvat was given to conduct step
pressure tests on the six (6] wells listed below. The step pressure tests were performed to
demonstrate that in]ection pressure could be raised in operating wells without causing
formation fracturing.
1. Well 20-11 EPA Permit Number C03858-04537 [was tested]
2. Well 21-16 EPA Permit Number C03858-04565 (wasn't tested, due to being
plugged on the date of the schedu led test, but will re-schedule)
3. Well 29-20 EPA Permit Number C03858-04569 (wasn't tested, due to de-
~, _-
pressuring the cavity for rig work,
and won't be tested at this time.)
4. Well 20-19 EPA Permit Number C03858-04556 (wasn't tested, but will re-
schedule)
5. Well 29-28 EPA Permit Number C03858-04575 (was tested)
6. Well 29-27 EPA Permit Number C03858-04574 (was tested)
The tests were not witnessed by the EPA, but were conducted as follows:
Approved Test procedure;
1. Block in well production valve.
2. Pressure the cavity to 700 psig and block in the well.
3. Record the change in pressure for 1 hour.
4. Establish this as the baseline pressure loss.
5. Increase the cavity pressure to 725 psig, block in the well.
6. Record the change in pressure for one hour.
7. Compare the new pressure change to baseline. If the new pressure change
compares closely with the baseline, continue the test. If the new pressure change
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