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<br /> <br />10. Immediately disconnect pressure source and start test <br />time (If there has been a significant drop in pressure <br />during the process of disconnection, the test may have <br />to be restarted). The pressure gages used to monitor <br />injection tubing pressure and annulus pressure should <br />have a pressure range which will allow the test <br />pressure to be near the mid-range of the gage. <br />Additionally, the gage must be of sufficient accuracy <br />and scale to allow an accurate reading of a 10 percent <br />change to be read. For instance, a test pressure of <br />600 psi should be monitored with a 0 to 1000 psi gage. <br />The scale should be incremented in 20 psi increments. <br />li. Record tubing and annulus pressure values every five <br />(5) minutes. <br />12. At the end of the test, record the final tubing <br />pressure. <br />13. If the test fails, check the valves, bull plugs and <br />casing head close up for possible leaks. The well <br />should be retested. <br />14. If the second test indicates a well failure, the Region <br />should be informed of the failure within 24 hours by <br />the operator, and the well should be shut-in within 48 <br />hours per Headquarters guidance X76. A follow-up <br />letter should be prepared by the operator which <br />outlines the cause of the MIT failure and proposes a <br />potential course of action.. This report should be <br />submitted to EPA within five days. <br />15. Bleed off well into a bucket, if possible, to obtain a <br />volume estimate. This should be compared to the <br />calculated value obtained using the casing/tubing <br />annulus volume and fluid compressibility values. <br />16. Return to office and prepare follow-up. <br />Alternative Test Option <br />While it is expected that the test procedure outlined above <br />will be applicable to most wells, the potential does exist that <br />unique circumstances may exist for a given well that precludes or <br />makes unsafe the application of this test procedure. In the <br />event that these eaceotional or estraordinarv conditions are <br />encountered, the operator has the option to propose an <br />alternative test or monitoring procedures. The request must be <br />submitted by the operator in writing and must be approved in <br />writing by the UIC-Implementation Section Chief or equivalent <br />level of management. <br />Attachment <br />