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Management Team

MERI’s Management Team

Here’s some information about MERI’s management team: 

Keith Olson – Interim General Manager

Keith is Interim General Manager of Madison Environmental Resourcing Inc, (MERI), an infectious and hazardous waste disposal company located in Madison, WI.  He has been a member of the MERI company since 1996, most recently as manager of accounting and operations.

He helps customers resolve medical waste issues as he shares his knowledge of how to handle, transport and dispose of a wide range of biohazard and hazardous materials.

Keith is married, has three children, and enjoys gardening.

Caleb Kitzerow – Sales 

With a degree in Sustainability Management from UW Stout, Caleb is committed to sharing innovative waste reduction strategies.  He tailors waste pickups that help organizations not only save money, but helps them run more efficiently. 

Because he works everyday with the UW System and the owners of MERI, Madison’s three Madison hospitals, Caleb has specific insight into the healthcare industry.

He is current on RCRA and DOT hazardous certifications. He can work with you on some of your toughest compliance problems and come up with a cost-effective solution.

When he’s not meeting with clients, he is usually found on the slopes or on his racing bike.

Tammy Greiber – Sales 

Tammy Greiber’s goal is to make sure MERI provides the most cost-effective solution to your medical waste disposal needs.  She works with both our existing and potential customers to make sure they are getting five-star service from MERI. 

Tammy may look familiar to you if you live in Waunakee area.  When not at MERI, she coaches track at Waunakee High School and teaches fitness classes at the community center.

Lisa H. Clark – Marketing 

Lisa enjoys working alongside MERI’s dedicated team. They  strive everyday to keep MERI’s costs low so that our customers can dedicate their financial resources to patient care. She coordinates MERI’s sharps disposal mailback program to help small medical waste generators save money.

Lisa uses her experience in public relations, content marketing and event planning to stay abreast of the latest medical waste news to share with MERI clients. In addition, she organizes MERI’s hazardous training certification programs.

She holds a journalism degree from Northern Illinois University.

Richard Zacharias – Customer Service 

Richard has been a member of the MERI team for more than 30 years. Chances are, if you have a question about the proper way to dispose infectious, pharmaceutical, hazardous chemicals or universal waste, he’ll have the answer for you! Connect with him on Linked In today!

Zac takes pride in servicing and helping organizations find the most cost-effective solution for their medical waste streams. One of the things he likes best about MERI is its focus on customer service, with no minimums or monthly fees. He also appreciates that our customers are not charged for their biohazard containers and liners.

Zac co-founded the Wisconsin Association of Incinerator Operators.