Walker, R., “Groundwater Protection Programs in Marion County, Indiana,” Professional Geologists of Indiana Continuing Education Seminar, Speedway, IN, November 14, 2018.
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Walker, R., “Groundwater Protection Programs in Marion County, Indiana,” Professional Geologists of Indiana Continuing Education Seminar, Speedway, IN, November 14, 2018.
- Midwestern States Environmental Consultants Association
- Environmental & Engineering Geophysical Society
- Professional Geologists of Indiana, Inc.
- National Ground Water Association
- American Societies of Chemical / Civil Engineers
Engineers without Borders
- Association of Environmental and Engineering Geologists
- Indiana Association for Environmental Professionals
- Geological Society of American
- Indiana Circular Economy Initiative
- Economy of Communion
- Indiana Recycling Coalition
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Source: UNEP
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