RPSEA (Research Partnership to Secure Energy for America). 2009. An Integrated Framework for Treatment and Management of Produced Water: Technical Assessment of Produced Water Treatment Technologies. RPSEA Project 07122-12. Golden: Colorado School of Mines. Available at www.aqwatec.com/research/projects/Tech_Assessment_PW_Treatment_Tech.pdf (accessed February 16, 2010).

Schulz, R., and S.K.C. Peall. 2001. Effectiveness of a Constructed Wetland for Retention of Nonpoint-Source Pesticide Pollution in the Lourens River Catchment, South Africa. Environmental Science and Technology 35(2):422-426.

Stewart, D.R. and L. Takichi. 2007. Beneficial use of produced water—water as a valuable by-product. White paper presented to the 2007 Integrated Petroleum Environmental Consortium Conference, Tulsa, OK. Available at ipec.utulsa.edu/Conf2007/Papers/Stewart_74.pdf (accessed March 5, 2010).

Triolo, M., D.O. Ogbe, and A.S. Lawal. 2000. Considerations for water disposal and management in the development of coalbed methane resources in rural Alaska. Journal of Canadian Petroleum Technology 39: 41-47.

Veil, J.A. 2002. Regulatory Issues Affecting Management of Produced Water from Coal Bed Methane Wells. Prepared by Argonne National Laboratory for the Office of Fossil Energy, U.S. Department of Energy. Contract W-31-109-ENG-38. Available at bogc.dnrc.state.mt.us/website/mtcbm/CBM/ANL_CBM_Paper.pdf (accessed February 23, 2009).

Veil, J.A., M.G. Puder, D. Elcock, and R.J. Redweik, Jr. 2004. A White Paper Describing Produced Water from Production of Crude Oil, Natural Gas, and Coal Bed Methane. Argonne National Laboratory. Prepared for the National Energy Technology Laboratory, U.S. Department of Energy, under Contract W-31-109-Eng-38. Available at www.ead.anl.gov/pub/doc/ProducedWatersWP0401.pdf (accessed January 27, 2010).

Welch, J. 2009. Reverse osmosis treatment of CBM produced water continues to evolve. Oil and Gas Journal 107(37):45-50.

Wyoming DEQ (Department of Environmental Quality). 2000. Concentrations of Barium in the Surface Waters in Northeastern Wyoming Related to Discharges of Coal Bed Methane Produced Water. Cheyenne: State of Wyoming. Available at deq.state.wy.us/wqd/wypdes_permitting/WYPDES_cbm/downloads/12258-doc.pdf (accessed February 23, 2010).

Zhao, H., G.F. Vance, G.K. Ganjegunte, and M.A. Urynowicz. 2008. Use of zeolites for treating natural gas co-produced waters in Wyoming, USA. Desalinization 228:263-276.

Zhao, H., G.F. Vance, M.A. Urynowicz, and R.W. Gregory. 2009. Integrated treatment process using a natural Wyoming clinoptilolite for remediating produced waters from coalbed natural gas operations. Applied Clay Science 42:279-385.