Underground Storage Tanks

Monitored Natural Attenuation: It's Much More Than
Watching The Grass Grow!

• Office of Solid Waste and Emergency Response (OSWER) MNA Workgroup (Public Access Web Site)
• OSWER Directive 9200.4-17P -- Use of Monitored Natural Attenuation at Superfund, RCRA Corrective Action, and Underground Storage Tank Sites -- April 21, 1999
  • OSWER Directive 9200.4-17P (PDF) (17 pp, 274K, About PDF)D9200417.PDF
  • More Information about the Directive (HTML format)
  • Summary of Differences between Final and Interim (PDF) (2 pp, 5K, About PDF) DIFF.PDF
  • Federal Register Notice of Availability (PDF) (2 pp, 6K, About PDF) 64 FR 25039 - 25040  Monday, May 10, 1999 FR051099.PDF
• A Comparison of the December 1997 version of the OSWER Directive on Monitored Natural Attenuation and the ASTM Standard on Remediation by Natural Attenuation.
  Developed by Matt Small (EPA Region 9) and Hal White (EPA OUST)
  • A Comparison of the EPA MNA Directive and the ASTM RNA Standard (MS POWERPOINT) (18 pp, 75K, You may need MS PowerPoint Viewer to read the file ) MS PowerPoint presentation made at the 10th Annual UST/LUST Conference, Long Beach, CA, 3/30-4/1/98. mnavsrna.ppt
  • Natural Attenuation: EPA's New Policy Directive Vis a Vis ASTM's New Industry Standard. (PDF) (11 pp, 290K, About PDF)
• Natural Attenuation: Is Dilution the Solution? (PDF) (12 pp, 288K, About PDF)
  2002. J. E. Odencrantz, M. D. Varljen, and R. A. Vogl. LUSTLine, Bulletin 40, March, pp.8-12.
• NATURAL ATTENUATION STUDY IN WISCONSIN AND ILLINOIS. A natural attenuation field study conducted jointly by the EPA Region 5, Wisconsin Department of Natural Resources (WDNR), the Illinois Environmental Protection Agency (IEPA), and Amoco Corporation (Amoco). This project, initiated in October 1994 has goals of determining the effectiveness of natural attenuation and developing a cost-effective way to evaluate it. For more information about this report, contact Yves Reme of EPA Region 5.
  • Report
    • In WordPerfect Format (27 pp, 86K, You may need Corel WordPefect Viewer to read the file mnastudy.wpd
    • In PDF Format (24 pp, 60K, About PDF)
  • Appendices
    • Appendix A (PDF) (17 pp, 817K, About PDF) Amoco Service Station No. 15536 Concord, Wisconsin
    • Appendix B (PDF) (18 pp, 807K, About PDF) Amoco Service Station No. 15556 Milwaukee, Wisconsin
    • Appendix C (PDF) (18 pp, 915K, About PDF) Amoco Service Station No. 18764 Hales Corners, Wisconsin
    • Appendix D (PDF) (15 pp, 803K, About PDF) Amoco Service Station No. 00455 Marshfield, Wisconsin
    • Appendix E (PDF) (11 pp, 926K, About PDF) Amoco Service Station No. 5375 Highland Park, Illinois
    • Appendix F (PDF) (11 pp, 766K, About PDF) Amoco Service Station No. 5451 Broadview, Illinois
    • Appendix G (PDF) (10 pp, 844K, About PDF) Amoco Service Station No. 18673 Chicago, Illinois
    • Appendix H (PDF) (13 pp, 308K, About PDF) Bioparameter Analysis
    • Appendix I (PDF) (15 pp, 491K, About PDF) Attenuation Rate Estimation
  • Data Corrections (PDF) (5 pp, 163K, About PDF) (Fax from WIDNR to EPA Region 5)
• ORD Seminars on Monitored Natural Attenuation for Groundwater (EPA/625/K-98/001) September 1998
  • Seminar Handouts (all files are in PDF format)
• Performance Monitoring of MNA Remedies for VOCs in Ground Water (EPA/600/R-04/027, April 2004. PDF document by sections) (PDF) (13 pp, 415K, About PDF)
  (PDF document as one PDF file) (92 pp, 1.9MB, About PDF)
• Commonly Asked Questions Regarding the Use of Natural Attenuation For Petroleum-Contaminated Sites at Federal Facilities
  This brochure was developed through a partnership among the U.S. EPA, Air Force, Army, Navy, and Coast Guard.
• Monitored Natural Attenuation of Chlorinated Solvents (PDF) (3 pp, 82K, About PDF)
  (EPA/600/F-98/022). May 1999. This fact sheet was developed by the EPA Kerr Environmental Research Laboratory. It explains what the term Monitored Natural Attenuation means when the term is used to describe a potential strategy to remediate a contaminated site. The fact sheet is written for an audience with little or no scientific background and was prepared to assist Federal and State regulators to educate the general public on complex environmental issue
• Monitored Natural Attenuation of Petroleum Hydrocarbons (PDF) (3 pp, 74K, About PDF)
  (EPA/600/F-98/021). May 1999. This fact sheet was developed by the the EPA Kerr Environmental Research Laboratory. It explains what the term Monitored Natural Attenuation means when the term is used to describe a potential strategy to remediate a contaminated site. The fact sheet is written for an audience with little or no scientific background and was prepared to assist Federal and State regulators in educating the general public on this complex environmental issue

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