ABOUT
About what makes CT Laboratories different...
Experience cannot be overlooked. CT Laboratories LLC has been in business since 1987. We are located in the heart of the Baraboo Bluffs in Baraboo, WI. The lab was started back in the eighties as an off-shoot of the engineering firm Mid-States Associates. Today, we are locally owned and continue to grow. We are always increasing our capabilities and the locations we serve.
CT Laboratories' staff is comprised of dedicated, long-term employees. Key personnel, including our Laboratory Director, Project Managers, Group Leaders and Senior Analysts have an average tenure of over 12 years with the company. We also understand that communication is the key to a successful project. Our clients are assigned a specific project manager to take care of their needs from initial project scoping and assistance with QAPP generation, to fulfilling bottle requests and verifying sample receipt through addressing technical issues and final report generation.
Quality is not a given or an afterthought at CT Laboratories. Our quality assurance program is designed to ensure legally defensible data. From numerous performance evaluation studies, NELAP and other individual State audits, as well as our in-house program, we continually monitor our quality to ensure our clients get the best results possible.
OUR TEAM
As a Small Business, many of our personnel take on more than one responsibility. We are extremely proud of our team and the expertise they bring to the laboratory.
CERESS BERWANGER
President & Owner
Pan American Business School, 1977
Time at CT Laboratories: 19 years
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Ms. Berwanger has over 35 years of experience in the environmental laboratory industry, in a variety of financial, technical, regulatory, marketing, project management, sales and managerial positions. Her expertise includes a thorough knowledge of Federal contracting requirements and business management aspects of the laboratory.
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Learn more about our Woman-Owned Small Business Designation:
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Brett Szymanski
Laboratory Director / Project Manager
BA in Management & Human Resources
Time at CT Laboratories: 14 years
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Areas of Expertise:
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Oversight of operations, strategic planning, monitoring QA/QC issues, personnel and workload allocations.
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Project Management for Department of Defense, EPA, and other high-profile projects nationwide.
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Organics Analysis on GC/MS.
Dennis Linley
Business Development / Marketing
BS in Wildlife Biology
Time at CT Laboratories: 26 years
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Areas of Expertise:
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Sales & Marketing
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Contract Development
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Project Management
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Client Relationships
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Reporting
Heidi Beckel
Wet Chemistry & Microbiology Group Leader
BS in Microbiology
Time at CT Laboratories: 3 years​
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Areas of Expertise:
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Microbiology sample preparation and analysis.
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Wet Chemistry sample preparation and analysis.
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Troubleshooting and optimizing instrumentation.
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Team management & leadership.
David Berwanger
VP of Operations / Information Systems Manager
AS/BS in Chemistry
Time at CT Laboratories: 23 years
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Areas of Expertise:
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Analytical laboratory instrumentation.
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Productivity/cost consulting.
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Environmental laboratory management.
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Laboratory network and instrumentation software.
Jodi Serstad
Project Manager
Time at CT Laboratories: 20 years
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Areas of Expertise
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​DNR Waste Water and Drinking Water Compliance.
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Local Municipalities Testing Needs - Water Treatment Plants
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Hazardous Waste Disposal
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Sample Receiving and Facilities Management
Adam Zurfluh
Semivolatiles & Extractions Group Leader
BS in Wildlife Biology
Time at CT Laboratories: 9 years
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Areas of Expertise:
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Semivolatile Organics Analysis including PCBs, Pesticides, and Explosives.
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Extraction of Semivolatile Organic Compounds from difficult matrices.
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Instrumentation & Maintenance - GC and HPLC
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Team management & leadership
Rebecca Duranceau
Quality Assurance Manager / Technical Director
BS/MS in Chemistry/Medicinal Chemistry
Time at CT Laboratories: 15 years
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Areas of Expertise:
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Quality Assurance & Accreditations
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HPLC Analysis - PAHs and Explosives
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Organics Analysis on GC, GC/MS
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LC/MS/MS Genotyping
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See research profile here
Erik Catherman
Sample Receiving / Facilities Manager
Time at CT Laboratories: 2 years
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Areas of Expertise:
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Hazardous Waste Disposal
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Client Relationships
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Sample Processing and disbursement to laboratory personnel
Debbie Watts
Administrative Assistant
Time at CT Laboratories: 15 years
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Areas of Expertise:
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Accounts Receivable
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Human Resources / Payroll
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Client Relationships
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Create and Maintain Physical and Electronic Filing Systems
Eric Korthals
Senior Project Manager / Deputy Technical Director
BS/MS in Aquatic Biology/Chemistry
Time at CT Laboratories: 31 years
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Areas of Expertise:
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Project Management in all areas of CT Laboratories involvement.
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Laboratory Information Management Systems (LIMS) administration and development.
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Electronic Data Deliverables (EDDs) development and generation.
Randy Digmann
Volatiles & Metals Group Leader
BS in Water Chemistry
Time at CT Laboratories: 32 years
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Areas of Expertise:
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Volatile Organic Compounds analysis.
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Instrumentation & Maintenance - GC/MS and GC.
- Team management & leadership