The AMP-Cherokee Team

Tim Zapf - General Manager email
Mr. Zapf joined Cherokee Instruments in 1997 as a sales and technical support representative. Prior to joining Cherokee, Tim worked as a project manager for two air consulting and engineering firms with primary focus on stack sampling and ambient air monitoring. Tim has been involved with air sampling since 1989 and is well versed in the EPA's reference methods and sampling techniques. Currently, Tim oversees all operational aspects of the company. Tim provides direction for continuous improvement of the company’s services and support. Tim remains as an active interface between clients and the company, and remains very hands on in the technical aspects of many projects.

John Kelley, QSTI - Vice President of Business Development email
Mr. Kelley has more than 25+ years of experience in environmental consulting, source testing, and CEM system design and manufacturing for industrial and government clients. John also has a Bachelor of Science in Engineering and is a Qualified Source Testing Individual (QSTI). John’s 25+ years of project management and application engineering experience with IT Corporation, URS, and ESC has been utilized to develop customer relationships with major industrial sources across North America. Mr. Kelley's former company, Emission Measurement Technology (EMT), was acquired by Cherokee Instruments in 2009 to create AMP-Cherokee.

"The unique capability I see with AMP-Cherokee, as a full service air quality equipment and services organization, is the way we bring CEM system knowledge to the table. The limitations of independent integrators and service providers make them less effective. AMP-Cherokee's thorough understanding of current monitoring regulations and technologies provides a full scope of solutions to our clients. I'm excited to offer a total resource for systems and services for the first time in the emissions monitoring industry."

Mike Maret PE, QSTI - Product Development Manager email
Mr. Maret joined AMP-Cherokee in 2011 as the Product Development Manager. Mike has more than 25 years of experience in source and ambient air testing and indoor air monitoring for industrial and government clients. Mike is a licensed Professional Engineer in North Carolina, and is a Qualified Source Testing Individual (QSTI). He is responsible for budgeting, scheduling, procurement of materials, hardware and software, and oversight of assembly, quality testing, installation, commissioning and auditing of continuous emissions monitoring systems (CEMS) for industrial air clients.

Prior to joining AMP-Cherokee, Mike worked as a Project Manager for MACTEC Engineering and Consulting, Inc. (formerly Pacific Environmental Services) where he managed emissions testing projects, provided regulatory support for state air agencies, and assisted in the development of emissions inventories for large military facilities.

Lyndon "Sarge" Sargent - Logistics Manager email
Mr. Sargent joined Cherokee Instruments in its founding year of 1995, and is the company's longest tenured employee. Prior to joining Cherokee, Sarge worked for many years in the entertainment industry where he provided logistical services worldwide to musical bands, such as AC/DC and INXS. Sarge is well versed in the logistical requirements needed to successfully meet our delivery requirements for all domestic and international shipments. Currently, Sarge is responsible for logistical and resource management including inventory control and shipping/receiving coordination.

Jim Kreeger  - Equipment Manager email
Mr. Kreeger joined Cherokee Instruments specifically to manage the manual method stack test equipment fleet. As the equipment manager, Jim now manages analyzer maintenance, calibration and repair, in addition to assessing new analyzers for addition to our rental fleet. Jim's electronic and mechanical aptitude has consistently kept our equipment calibrated and field-ready for our nationwide rental customer base.

Chris Keller  - Field Services Manager email
Mr. Keller joined AMP-Cherokee in 2009 after a career in mechanical and electrical machinery operation and maintenance at Disney and Universal Studios in Orlando, Florida. As Field Services Manager, Chris brings a wide range of experience and aptitude to our installation and maintenance operations for increasing reliability and performance of CEM and related monitoring equipment.

Elke Arnold  - Office Manager email
Ms. Arnold joined Cherokee Instruments in 2000 as a receptionist. Prior to joining the company, Elke spent several years in the banking industry both domestically and in her home country of Germany. Elke’s ability to manage finances effectively did not go unnoticed for long. In her current role, Elke handles day-to-day bookkeeping, which includes client credit management, purchasing, and accounts payable/receivable.

AMP-Cherokee - Headquarters
100 Logan Court
Angier, NC 27501
919.552.0554 phone

919.275.6086 fax

Map to North Carolina Office

AMP-Cherokee - Tennessee
8703 Unicorn Drive, Suite 302
Knoxville, TN 37923
919.522.0554 phone
865.531.1747 fax


Map to Tennessee Office