About Us 



Tom Hoff


Before founding One Call Concepts, Inc. in 1982, Tom Hoff worked nearly 20 years at the Chesapeake and Potomac (C&P) Telephone Company of Maryland (now Verizon). At C&P, he was responsible for many aspects of outside and inside plant construction and maintenance and acquired the skills and body of knowledge required to manage a successful call center or outside plant operation. Tom was the last manager of the Miss Utility operation while it was still operated in-house by C&P. Shortly after launching One Call Concepts, Tom won major contracts, which the company still holds to this day. 

Tom is a leader in the industry. He presently serves as chairman of the Maryland Underground Facilities Damage Prevention Authority. He has served on the One Call Systems International (OCSI) Executive Council and has addressed numerous national and international associations on the importance of one call, the mechanics of call center operations, and damage prevention.

Tom is a lifelong Maryland resident along with his wife Norma, children, and grandchildren. 

Dan Florenzo

President, Chief Financial Officer

A veteran of One Call Concepts, Inc. (“OCC”) for more than twenty five years, Dan became President in late 2013 adding to his existing responsibilities of Chief Financial Officer which he assumed in 2010. Having inherited a management team of highly competent industry professionals, Dan believes that OCC is strategically positioned to provide unmatched technology and service to the one call community.

Dan joined OCC in 1988 as Controller. He was responsible for the entire accounting function as well as budgeting, tax administration, benefits administration, property and casualty insurance and banking relations.

Prior to joining OCC, Dan worked as Controller of a small public publishing and media company. Dan began his career in public accounting.

Dan earned a Bachelor of Science degree in Accounting from St. Joseph’s College in Rensselaer, Indiana. He earned his CPA certificate in 1987.


Adam Franco

Director of Operations

Adam began his damage prevention career with One Call Concepts Inc. on March 10, 2003. His career started with a position as an operator at the Gopher State One Call Center in Mendota Heights, Minnesota. During his time in Minnesota Adam worked his way up through the ranks holding the positions of Lead Operator, Supervisor, and Assistant Office Manager. In November of 2010 Adam relocated to Portland, Oregon and accepted a promotion to the position of Operations Manager. Just over one year later, in December of 2011, Adam began serving as the General Manager for the Utility Notification Center, and in 2014 became Director of Operations for One Call Concepts.

With his operational experience and a passion for public awareness, Adam takes an active role in underground safety. He is currently a member of the Northwest Regional CGA, Metropolitan UCC, and Clark County UCC, as well as a regular participant with other damage prevention groups in the Pacific Northwest.

Growing up in the land of ten thousand lakes, Adam became an avid fisherman. When he isn’t spending his free time on a lake, he enjoys wood working, hiking, and is a shooting sports enthusiast.