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2. Operation and maintenance of underground injection wells;Buttram;Ground Water Monitoring Review,1986
3. CH2M Hill, 1986a. A Class I Injection Well Survey. Phase II Report—Performance Evaluation. Prepared for Underground Injection Practices Council, Oklahoma City, OK, D19976.S2.00, May.
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5. Clark, J.E., 1987. Factors that can cause abandoned wells to leak as verified by case histories from class II injection, Texas Railroad Commission files. Proceedings of the International Symposium on Subsurface Injection of Oilfield Brines, May 4–6, New Orleans, LA, pp. 166–223. Sponsored by the US Environmental Protection Agency and the Underground Injection Practices Council. Published by the Underground Injection Practices Council, Oklahoma City, OK.