Designing Monitoring Programs to Effectively Evaluate the Performance of Natural Attenuation |
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| Authors: | Todd H. Wiedemeier Patrick E. Haas |
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| Affiliation: | Todd H. Wiedenjeier;(corresponding author, Parsons, 1700 Broadway, Ste. 900, Denver, CO 802990;(303) 831–8100;fax (303) 831–8208;) is a technology leader with Parsons in Denver, Colorado. His responsibilities include evaluation of natural attenuation and the design and installation of in situ remediation systems to perform light nonaqueous-phase liquid recovery, ground water pump-and-treat, air sparging, bioventing, vapor extraction, and enhanced bioremediation. His research and professional interests include contaminant transport modeling and in situ remediation methods for contaminated soils and ground water. He has a B.S. in geology from Colorado State University and an M.S. in geology from Wichita State University. Patrick E. Haas;is a project manager with Mitretek Systems Inc. (13526 George Rd., Ste. 200, San Antonio, TX 78201;(210) 479–0481;fax (210) 479–0482;) in San Antonio, Texas. He has installed more than 30 bioventing systems and more than 40 LNAPL recovery systems. He also has performed numerous risk-based corrective action evaluations and natural attenuation investigations. He has a B.S. in chemistry and biology from Southwestern University and an M.S. in environmental sciences from the University of Texas at San Antonio. |
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| Abstract: | Natural attenuation processes affect the fate and transport of organic compounds in many hydrologic systems. Over the last several years, regulatory agencies and environmental professionals have come to recognize the importance of these natural processes in effecting contaminant attenuation. When they are shown to be protective of human health and the environment, and when a well-designed monitoring program is in place to document the efficiency of these processes, they can be a valuable component of site remediation strategies. |
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