About OnMaterials

OnMaterials designs and manufactures engineered zero valent metal products for in-situ soil and groundwater remediation. We also provide custom injection equipment and services to efficiently and uniformly apply these materials to the contaminated soil and groundwater.

Many remediation products have come and gone, but for over 12 years Z-Loy™ products have remained the state of the art remediation solution. With our extensive experience, education, and creative problem solving abilities, our clients continually achieve successful results. The company was established over 17 years ago by combining our expertise in the development and synthesis of engineered metals and materials and knowledge of the environmental industry to meet the needs of clients searching for innovative, cost-effective solutions to successfully remediate soil and groundwater.

We are not a typical products and services provider - We also partner with our clients to conduct design consultation and technical analysis prior to sales, tailored for each project’s specific contaminants, geology, location and other unique considerations. We know that a complete understanding of your project needs and goals is essential for success.

Successes and Recognitions:

  • Published by EPA as SBIR Success Story
  • Presenter at multiple conferences and symposiums, including Battelle Conference on Remediation of Chlorinated and Recalcitrant Compounds, Battelle Bioremediation Conference, and EPA Regional Meetings.
  • Research grants awarded from EPA, NIH, DOE, NSF, U.S. Air Force, and U.S. Missile Defense Agency
  • Numerous successful product applications and field injections over the past 14 years, with a varied client base including many engineering and consulting firms serving military, private industry large and small, dry cleaners, and other applications.

Principal Technical Staff:


John Freim:  President and Chief Technology Officer received his B.S. degree in Chemical Engineering from the University of Illinois, and his Ph.D. in Materials Science from UCSD. He has extensive experience in the synthesis and processing of engineered nanopowders and micropowders of many compositions including oxides, non oxide ceramics, and metals and is the author of 8 patents in the discipline.

James Harvey IV:  Engineering Manager received his B.S. in Chemical Engineering and M.S. in Environmental Engineering from Tulane University.  He has experience with design and engineering of projects, materials, and equipment and has overseen many successful injection projects.  James has worked in the environmental industry for 8 years with the last 5 being with OnMaterials.  

Jim Kraychy:  Field Engineer received his B.S. in Mechanical Engineering from the University of Arizona, and has been applying his natural mechanical aptitude and abilities in nanotechnology, scientific, and environmental industries for over 20 years.  Jim is well versed in efficient injection systems and onsite safety protocols.  


Principal Business Staff:


Diane Freim:  Business Manager received her M.F.A in Industrial Organizational Psychology from University of Tennessee Chattanooga and has over 20 years experience in the fields of business administration, business development, and human resources.