CHESTER LabNet (CLN) is an ORELAP accredited laboratory that specializes in inorganic air quality analysis. Our staff is dedicated to the satisfaction of our clients, and responsive to the unique needs of the air quality industry. CLN has a great depth of knowledge of air quality methods and their nuances.
CLN was originally founded in 1977 as NEA, Inc. In 1991, the laboratory was sold to Chester Environmental and became part of the Chester LabNet laboratory network. CLN was later purchased by private investors and has been independent since 1994. In 2016, the company became 100% employee-owned. As both owners and employees, we are highly committed to great customer service.
Paul Duda – President, Laboratory Director, Client Services Technical Director, Lead Project Manager
Hire Date: December 1989
Education: B.S. Engineering Management, University of Portland
Background: Gravimetric lab technician, XRF analyst, project manager, and LIMS administrator; promoted to President in 2001. Currently a member of the Air and Waste Management Association (A&WMA). Received PNWIS-A&WMA Lab Coat Award in 2012
Lisa Ball – Project Manager, Sample Custodian
Hire Date: October 1997
Education: B.S. Integrated Science, Portland State University
Background: Environmental analyses of air, soil and water samples; project manager and sample custodian.
Mike May – QA Officer and Analyst
Hire Date: August 2008 – November 2011, November 2017 – Present
Education: B.S., Biology, Portland State University
Background: Analysis of environmental and production samples. Quality Control/Quality Assurance including EPA CLP and NELAP. Currently a member of The NELAC Institute (TNI).
Richard Sarver – XRF Technical Director
Hire Date: November 1986
Education: A.A.S. Chemical Technology, Chemeketa Community College
Background: Source Sampling, XRF analyst.
Sheri Heldstab – Technical Writer
Hire Date: July 1992
Education: B.S. Biology, University of Oregon
Background: Environmental analyses of air, soil and water samples; technical writing; health and safety oversight; Quality Control/Quality Assurance including EPA CLP and NELAP. Currently Chair of the TNI SSAS Expert Committee. Current member of ASTM subcomittee D22.03 (source and ambient air).
Jennifer Schleis – Gravimetric Lab Technical Director, XRF Analyst
Hire Date: February 2007
Education: B.S.E.S. Environmental Economics and Management, University of Georgia
Background: Environmental analyses of air, soil and water samples; Gravimetric Lab technical director.
Julie Delarue – Conventional Chemistry Technical Director and Lead Analyst
Hire Date: July 2015
Education: B.S., Environmental Sciences, University of Alberta (CAN), 2000; Chemical Technology Certificate, SAIT Polytechnic (CAN), 2009 (equivalent of M.S., Analytical Chemistry)
Background: Analysis of environmental and petroleum samples.
Photography: Human Nature Art