Contacting is easy. Feel free to give us a call or email with any questions, comments or requests you have.
We are available Monday through Friday from 8:00am to 5:00pm EST.
For service needs we have 24 hour/7 day a week/365 day a year service accessibility,
just call our main phone number and you will get a real person!
Harn R/O Main Office - James A. Harn, President
Julia E. Nemeth-Harn, PE Vice President
Ronald J. Castle, PE Process Design Manager
Jon Harn, PE Project Engineer
Kyle Jennings, PE Project Engineer
Andrey Kharitonenko, Project Engineer
Doyle Smith, CAD Designer