Cliff Grost started his company, Multi-Maintenance Cleaning and Restoration, Inc., over 30 years ago and continues to work in the field. He has been an IICRC triple master technician for over 20 years. Grost started learning about mold from Rachel Adams before it was even talked about in WRT class. Grost served on the IICRC board of directors for seven years, and as an editor of S100 fourth edition and S520 first and second edition. He was a consensus body member for S520 first edition and vice chair second edition. Grost also served on the TAC committee for CDS, AMRT and the MRS exam.