About Us...

Our company has evolved over the years. The company first opened as Close Environmental Consultants in Jackson, MO, in March, 1995. The business expanded and moved to the Square in Jackson, MO in March, 1997. In 2000 Close Environmental expanded again and moved to Cape Girardeau, Missouri. The company changed it's name to EJC Enterprises in 2009 and to EJC Advantage LLC in 2011.

Our Founder and Senior Consulting Engineer is
Edward R. Close, PhD, PE. 

Edward R. “Ed” Close, PhD, PE, has more than 45 years experience in the environmental field. He is a recognized expert in environmental science, and has served as environmental adviser to more than 20 Fortune 500 companies.

Dr. Close is the author of numerous technical papers and 7 nonfiction books. In 2006, Dr. Close released the DVD: Toxic Mold – A Breakthrough Discovery. In 2007, he co-authored the book: Nature’s Mold Rx, the Non-Toxic Solution to Toxic Mold in which he detailed 20 Case Studies for an innovative, leading edge methodology for preventing and remediating mold that he pioneered. Since that time, he has published booklets, brochures, CDs, and other publications educating the public in ways they can enjoy a better quality of life and health through the use of his discoveries for a non-toxic solution to mold prevention and remediation.

EJC Advantage, LLC is based on the belief that good science, common sense and a practical approach to environmental problems leads to timely, cost-appropriate solutions. Our customers' needs and concerns are of utmost importance to us and our team of professionals is committed to not only meeting those needs but also to going the extra mile and exceeding them whenever possible. This results in a high percentage of our business coming from repeat customers and referrals.

We would welcome the opportunity to earn your trust and deliver you the best service in the industry.


EJC Advatnage, LLC
PO Box 368
Jackson, MO  63755
Phone:  573-332-1114

About Edward R. Close, PhD, PE
Senior Research Fellow, ISPE
Distinguished Senior Fellow, ECAO  

BA Mathematics and Physics, Central Methodist University,
  Fayette, MO 1962
MS and PhD level course work and research in theoretical physics,  
  University of Missouri, Rolla
PhD program, environmental science and engineering, one year in
   Residence at Johns Hopkins University, Baltimore, MD 1972 -1973
PhD environmental engineering, Pacific Western University,
   Los Angeles, CA 1989
Post-graduate course work and research at several universities, including UC Davis, UCLA,
   and Case Western Reserve University  

Founder, Close Environmental Consultants (CEC), 1995
Currently Principal Engineer and Director of Research, EJC Advantage, LLC
Registered Professional Engineer (PE) #028666, State of Missouri
Professional Hydrologist #898, American Institute of Hydrology
Certified Environmental Professional
More than forty-five years experience in twelve states and two foreign Countries
Advisor to Fortune 500 Companies  

Kappa Mu Epsilon Honorary Mathematics Fraternity
American Institute of Hydrology (AIH)
Indoor Air Quality Association (IAQA)
International Society for Philosophical Enquiry (ISPE)
Exceptional Creative Achievement Organization(ECAO)  

  • Project Engineer, Worth of Stream-flow data for Reservoir Design, USGS – Corps of Engineers Cooperative Research, 1967 -1969 
  • As one of seven charter members of the Department of Interior Systems Analysis Group, Washington, D.C., helped develop fractal models of storm cells and coastal geomorphology, non-linear optimization models of hydrologic resources, and predictive models of environmental and ecological systems.
  • 1969 -1973
  • Project Engineer, Island-Wide Water Resources Management Study, San Juan, Puerto Rico, 1974 -76
  • Wrote the first comprehensive environmental regulations for the Kingdom of Saudi Arabia in 1981
  • Discovered and helped preserve a pre-Mohammed archaeological site in the Hejazi Region of Saudi Arabia
  • Breakthrough discoveries in environmental engineering, mold remediation, and quantum physics and consciousness studies.
  • Developed the Calculus of Distinctions with applications in physics and consciousness studies
  • On-location Technical Consultant for documentary film in the Middle East, February and March, 2010
  • Science Editor for Telicom, the Journal of the ISPE  
  • Author of seven published books, numerous professional articles and papers


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