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Quality Assurance 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. Certifications CT Laboratories LLC is DoD ELAP accredited and maintains national accreditation through multiple NELAP certifications. We hold state certifications in several of the country’s most stringent programs. The following organizations have endorsed CT Laboratories’ quality. These endorsements are granted on a facility specific basis through accreditation and/or certification and have been obtained as required for client projects. Many other state and federal agencies recognize reciprocal certification based on these national and state accreditations. Click on the icons below to view certifications and permits. States with reciprocity/few or no requirements: Alabama Colorado Hawaii Idaho Indiana Michigan Mississippi Missouri Montana Nebraska New Mexico Ohio Rhode Island South Dakota Tennessee Vermont Wyoming Security: Contact our QA Team For more specific information about state program requirements or CT Laboratories' state certifications, contact Rebecca Duranceau (QA Manager) via email or phone. Rebecca Duranceau Mail Phone QA@ctlaboratories.com 608.356.2760

Industrial & Manufacturing CT Laboratories LLC has extensive experience working with Industrial and Manufacturing segments. From local to national companies, CT Laboratories works to meet the individual needs of all its clients. Who do we serve? Automotive Industry Foundry Operations Salvage Yards Regional Electric Utilities Food Industry Home Products Manufacturers Mining Operations Chemical Companies Plastic Companies Dredging Operations Printing Inks and Coatings Companies Pipeline & Petroleum Operations Paper Companies Window Companies "Jodi [a Project Manager] answered all my questions (I am not a chemist) and went out of her way to set me on the correct track in completing the quality assurance requirements required by the DNR."

A Woman Owned Small Business A Women-Owned Small Business (WOSB) is a small business concern that is at least 51 percent directly and unconditionally owned and controlled by one or more women who are citizens (born or naturalized) of the United States. About the Owner: Ms. Berwanger has over 30 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. She has extensive experience in laboratory operations, project management, training, client service, and sales and marketing. Ms. Berwanger has a proven track record of targeting and capturing significant contract opportunities and developing long-standing, mutually beneficial teaming partnerships and client relationships. Not just a figurehead: We are proud that over half of CT Laboratories staff and analysts are women. Our Certifications Woman-Owned Business Enterprise WBE Cert Woman-Owned Small Business WOSB Cert We are part of the Women-Owned Small Business Federal Contracting Program... Get in Touch 608-356-2760 information@ctlaboratories.com

CT Laboratories is an Environmental Testing Laboratory in Baraboo, WI. We work with individual homeowners, businesses, and cleanup efforts at the local, state, and federal level. Visit our site for a complete suite of our testing services and to find an experienced Project Manager. Delivering more than data for your environmental analyses. Find a Project Manager TESTING SERVICES We not only perform a wide variety of analyses, we also perform those tests on every matrix imaginable. We perform these tests on everything from clean drinking water samples to leachate, soil samples to wood-blocks, sediments to concrete cores, and from oil to paint chips. CT Laboratories can handle your analytical needs. More Info QUALITY & CERTIFICATIONS 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. More Info MARKETS SERVED CT Laboratories supports large scale, high profile DoD and EPA projects, Fortune 500 companies, industrial manufacturers, landfills and nationwide environmental and engineering consulting firms as well as State and municipal government agencies and individuals testing their drinking water. Our project experience covers 47 states and as far away as Korea. Click on the link below to learn more about each service. More Info ABOUT US CT Laboratories LLC is a full service environmental laboratory located in Baraboo, Wisconsin. We have been providing analytical support to a wide range of projects nationwide since 1987. CT Laboratories is classified as a woman owned, small business under NAICS code 541380, testing laboratories. Learn More Clients OUR CLIENTS TESTIMONIALS "We have a long standing working relationship with CT Labs and look forward working with them for long into the future as well!!" Contact

Physical and Geotechnical CT Laboratories has been expanding into Geo Technical and Physical testing for the past several years. We have grown from sieve and grain size analyses to complex grinding and homogenization of soil for multi-incremental sampling projects. Bulk Density Soil bulk density is the ratio of the mass of dry solids to the bulk volume of the soil. The determination usually consists of drying and weighing a known volume of a soil sample. The core method is one method for determining bulk density that can be used with either re-packed or natural cores. EPA Method 310.1 Standard Methods, Method 2320B Methods of Soil Analysis. Part 1. Physical and Mineralogical Properties. 2nd Edition Flashpoint Flashpoint is determined by heating a sample at a slow, constant rate in a closed vessel and introducing a small flame. The flashpoint is the lowest temperature at which the test flame ignites the vapor above the sample. EPA Method 1010A. Grain Size Grain Size is determined by drying and separating a sample with nested sieves of increasingly smaller mesh sizes by shaking on a mechanical shaker. The percentage of pre-weighed soil sample that passes through each sieve is calculated. ASTM C136-84A, ASTM D451-85 - Standard Test Method for Particle Size Analysis of Soils. Specific Gravity Specific Gravity is the ratio of the masses of equal volumes of sludge or soil and distilled water. Specific gravity is determined by comparing the mass of a known volume of sample to the mass of an equal volume of distilled water at 4 degrees C. SM 2710F- 2011 Elutriate Test Preparation The elutriate test procedure is used to predict both dissolved and particle-associated concentration contaminants in confined disposal area effluents. This method simulates contaminant release under confined disposal conditions by combining localized sediment and water, mixing (slurrying), aerating the slurry, settling the slurry and finally decanting the supernatant water into appropriate containers for chemical testing. USACE Modified Elutriate Test D-86-4 Illinois EPA Material Analysis for Dredge and Fill Activities (Section 401) Free Liquids A representative amount of waste is placed in a 60 mesh paint filter. If any portion of the material (liquid or otherwise) passes through and drops from the filter within 5 minutes, the material is reported as containing free liquids. EPA Method 9095B. Puck Milling & Multiincremental Sampling Soils and dried and placed in a sieve until debris is removed. The sieved sample is then placed in a puck mill until a fine powder has been achieved. Multiincremental Sampling may occur prior to or after grinding depending on client requests. This procedure was developed in conjunction with the USACE and EPA Method 8330B. Total Organic Carbon (as % organic matter) The organic carbon that is converted into carbon dioxide after oxidation. SM 5310B EPA Method 415.1 EPA Method 9060A Back to Testing Services

Sample Receiving Hours Standard Samples: Monday - Friday: 8:00 am - 5:00 pm Saturdays: Requires prior notification and approval from Project Management Total and Fecal COLIFORM Samples: Monday - Thursday: 8:00 am - 5:00 pm Friday: 8:00 am - Noon Nitrate and BOD Samples: Monday - Thursday: 8:00 am - 5:00 pm Friday: 8:00 am - 2:00 pm Holidays & Closures (2022) New Year's Day (2022): Saturday, January 1st (observed Friday, December 31st) Closed Martin Luther King Jr Day: Monday, January 17th Open President's Day: Monday, February 21st Open Memorial Day: Monday, May 30th Closed Juneteenth: Sunday, June 19th (Observed Monday, June 20th) Open Independence Day: Monday, July 4th Closed Labor Day: Monday, September 5th Closed Indigenous People's Day (also observed as Columbus Day): Monday, October 10th Open Veteran's Day: Friday, November 11th Open Thanksgiving: Thursday, November 24th Closed Thursday & Friday Christmas Day: Sunday, December 25th (Observed Monday, December 26th) Closed New Year's Day (2023): Sunday, January 1st (Observed Monday, January 2nd) Closed

CT Laboratories is an Environmental Testing Laboratory in Baraboo, WI. We work with individual homeowners, businesses, and cleanup efforts at the local, state, and federal level. Visit our site for a complete suite of our testing services and to find an experienced Project Manager. 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. Markets Served Project Managers Quality Assurance 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: 22 years 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. Learn more about our Woman-Owned Small Business Designation: Woman Owned Brett Szymanski Laboratory Director / Project Manager BA in Management & Human Resources Time at CT Laboratories: 17 years Areas of Expertise: Oversight of operations, strategic planning, monitoring QA/QC issues, personnel and workload allocations. Project Management for Department of Defense , EPA , and other high-profile projects nationwide. Organics Analysis on GC/MS. Field Sampling Consultant. Dennis Linley Business Development / Marketing BS in Wildlife Biology Time at CT Laboratories: 29 years Areas of Expertise: Sales & Marketing Specialty Testing Contract Development Project Management Client Relationships Sample Receiving & Processing Reporting Heidi Beckel Wet Chemistry & Microbiology Group Leader BS in Microbiology Time at CT Laboratories: 6 years Areas of Expertise: Microbiology sample preparation and analysis. Wet Chemistry sample preparation and analysis. Troubleshooting and optimizing instrumentation. Team management & leadership. David Berwanger VP of Operations / Information Systems Manager AS/BS in Chemistry Time at CT Laboratories: 26 years Areas of Expertise: Analytical laboratory instrumentation. Productivity/cost consulting. Environmental laboratory management. Laboratory network and instrumentation software. Jodi Serstad Project Manager Time at CT Laboratories: 23 years Areas of Expertise DNR Waste Water and Drinking Water Compliance. Local Municipalities Testing Needs - Water Treatment Plants Shipping and Receiving Hazardous Waste Disposal Independent Well Water Testing Sample Receiving and Facilities Management Field Resources Adam Zurfluh Semivolatiles & Extractions Group Leader BS in Wildlife Biology Time at CT Laboratories: 12 years Areas of Expertise: Semivolatile Organics Analysis including PCBs, Pesticides, and Explosives. Extraction of Semivolatile Organic Compounds from difficult matrices. Instrumentation & Maintenance - GC and HPLC Team management & leadership Rebecca Duranceau Quality Assurance Manager / Technical Director BS/MS in Chemistry/Medicinal Chemistry Time at CT Laboratories: 19 years Areas of Expertise: Quality Assurance & Accreditations HPLC Analysis - PAHs and Explosives Organics Analysis on GC, GC/MS LC/MS/MS Genotyping See research profile here Erik Catherman Sample Receiving / Facilities Manager Time at CT Laboratories: 5 years Areas of Expertise: Shipping and Receiving Hazardous Waste Disposal Sample Receiving and Facilities Management Client Relationships Sample Processing and disbursement to laboratory personnel Debbie Watts Administrative Assistant Time at CT Laboratories: 18 years Areas of Expertise: Accounts Receivable Human Resources / Payroll Client Relationships 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: 34 years Areas of Expertise: Project Management in all areas of CT Laboratories involvement. Laboratory Information Management Systems (LIMS) administration and development. Electronic Data Deliverables (EDDs) development and generation. Randy Digmann Volatiles & Metals Group Leader BS in Water Chemistry Time at CT Laboratories: 35 years Areas of Expertise: Volatile Organic Compounds analysis. Metals analysis. Instrumentation & Maintenance - GC/MS and GC. Team management & leadership

Shipping & Receiving Below are commonly used couriers that can ship to CT Laboratories. Take a look at our Field Sampling Guide for directions on packaging your samples so they remain intact and at the correct temperature. UPS Fedex SpeeDee USPS From our 2021 Field Sampling Guide (pages 2-4) Join Our CSA

EPA, Brownfields, and Superfunds we have supported CT Laboratories has extensive experience providing analytical support for EPA emergency response, Superfund and Brownfields projects nationwide, including those listed below. Click here to go to EPA website EPA Regions Served Region III Washington, D.C. Maryland Virginia (direct contract) Region IV Illinois Indiana Michigan Minnesota Ohio Wisconsin Region VIII Colorado Montana North Dakota South Dakota Utah Wyoming Superfund Sites Velsicol Superfund Site, MI Jacobsville Superfund Site, IN Watertown Tire Fire, WI Washington Navy Yard Superfund Site, DC River Raisin Site, MI West Vermont Groundwater Contamination Site, IN Wisconsin Die Cast, WI Camelot Superfund, ND Eagle Zinc Site, IL Oconomowoc Electroplating, WI Flandreau Pesticides, SD Chapter Two Drum Site, WI ERRS OMC Plant 2 Site, IL Indiana Harbor, IN Metallics, WY Brownfields Madison, WI Redevelopment / Icke Landfill Ashland, WI -- Chicago Iron Site Neenah, WI -- Gateway Redevelopment Site Delavan, WI -- Ann Street Railroad Cooridor Remediation Cheyenne, WY -- Multiple Phase I and II Assessment Sites Janesville, WI -- River Street Revitalization Baraboo, WI -- 8th Street Redevelopment Manitowoc, WI -- Heresite Protection Coatings Marinette, WI -- Phase I and II Assessments Racine, WI -- Walker Manufacturing + 6 Sites

Organics Two dedicated teams UPLC - GC - GC/MS capabilities Decades of analyst experience Total Petroleum Hydrocarbons (TPH) Methods 8015C Modified 8015C State Specific Matrices Liquid, Solid Wisconsin Gasoline Range Organics (GRO) Methods WI GRO Matrices Liquid, Solid VOCs - including Acrolein & Acrylonitrile** Methods 8260C,D Matrices Liquid BTEX, MTBE, PVOC, Napthalene Methods EPA 8260C,D Wisconsin DNR GRO Matrices Liquid, Solid 1,4-Dioxane Methods 8270D,E - SIM Matrices Liquid, Solid TCLP Herbicides (2,4-D and 2,4,5-TP) Methods 8151A Matrices Liquid, Solid Nitroguanidine Methods Lab SOP SV030 Matrices Liquid, Solid Acrylamide Methods 8316 - by UPLC Matrices Liquid Diesel Range Organics (DRO), Oil Range Organics (ORO), and Residual Range Organics (RRO) Methods 8015C Matrices Liquid, Solid VOCs - Standard or Project-Specific List** Methods 8260C,D Matrices Liquid, Solid VOCs - Low Level Analysis** Methods 8260C,D Matrices Liquid, Solid SVOCs - Standard or Project-specific List** Methods 8270D,E 8270D,E - SIM Matrices Liquid, Solid, Waste PCBs Methods 8082A Matrices Liquid, Solid, Oil, Wipes Explosives Methods 8330B Matrices Liquid, Solid Dissolved Gases (Methane, Ethane, Ethene) Methods RSK-175 Matrices Liquid Wisconsin Diesel Range Organics (DRO) Methods WI DRO Matrices Liquid, Solid VOCs - including 2-Chloroethyl vinyl ether** Methods 8260C,D Matrices Liquid VOCs - SDWA List** Methods EPA 524.2 Matrices Drinking Water Polyaromatic Hydrocarbons (PAHs) Methods 8270D,E 8270D,E - SIM Matrices Liquid, Solid, Waste Chlorinated Pesticides Methods 8081B Matrices Liquid, Solid Nitrocellulose Methods EPA 9056M Matrices Liquid, Solid Dissolved Gases (Carbon Dioxide) Methods Modified RSK-175 Matrices Liquid Back to all Testing Services ** Choosing the appropriate test 1. Total Petroleum Hydrocarbons (TPH) can refer to numerous test methods and the analysis of many different Petroleum Hydrocarbons and/or boiling point ranges. If you are unsure which TPH range and/or test you need performed, please contact a CT Laboratories Project Manager. 2. Volatile Organic Compounds (VOCs) - There are numerous methods, lists, and sampling options associated with VOCs. The required sampling container and hold times will be dependent on the method specified, State in which the sample is collected and/or the regulatory program being followed. If you are unsure which container should be used, please contact a CT Laboratories Project Manager.

Private Well Water Testing CT Laboratories does not have specific testing bundles because we believe each home owner/client has different needs. We build test kits and adjust pricing accordingly . Our Project Manager, Jodi Serstad , has over 20 years of experience at CT Laboratories determining individual testing needs. Her expertise extends beyond State Drinking Water requirements, and she works with local municipalities, businesses, and individuals on a daily basis. Whether you're an individual home owner, a plumber, or contractor, she can guide you to determine what testing would suit your needs the best. Find her contact information here . Identify your water's symptoms: Go to DNR

Reporting & EDDs CT Laboratories LLC takes special care to understand the unique needs of our clients to design custom solutions that exceed expectations. Electronic Data Deliverables (EDDs) CT Laboratories is a strong proponent of electronic data deliverables (EDDs) to reduce the time required to provide our clients with their data, while providing great flexibility in how the data are used. We are also capable of electronically providing laboratory data to third parties, such as regulatory agencies, at the client’s request. Because we have the capability to send clients data and reports electronically, we have become virtually paperless in this area at CT Laboratories. Standard Formats We routinely provide EDDs in a variety of common industry formats, as well as client-specific variations, including: Fixed-length or comma delimited ASCII text Microsoft Excel Worksheet ERPMIS EQUIS SEDD FUDSChem ADR GIS Key Adobe Portable Document Format (PDF) Individual State Program formats Level I? Level IV? Find out what the differences are here . Data Transmission CT Laboratories has several approaches currently in place to transmit electronic data to our clients. These methods include: Transmission of data via Internet email Shipment of files via virus-checked CDs Download via access to our secure FTP website. CT Laboratories has a highly capable information systems (IS) staff that is available to answer questions and assist clients with technical issues. We are keenly aware of the need to protect each client’s data from unauthorized access. CT Laboratories has a number of mechanisms in place to limit both internal and external data access to those parties that are authorized by the client or play a vital role in preparing, processing, or transmitting the data. CT Laboratories also has the ability to encrypt each EDD set using a number of protective schemes, including each application’s native password protection or commercial products, such as WinZip. For more information about our EDD service, contact Information Systems Manager, by telephone at 608.356.2760 Electronic Validation Packages CT Laboratories provides a wide variety of data report formats, including Level IV data validation packages, which contain all QC and raw data necessary for independent review and reconstruction of the analytical results. Our electronic version of the Level IV validation package has been enthusiastically received by our clients, reducing or eliminating the need for shipping and storing multi-ream paper reports. Our electronic package is an original – generated directly from our LIMS, not merely a scanned copy (with the exception of chain of custody and laboratory notebooks). Contact Like what you see? Get in touch to learn more. First Name Last Name Email Message Send Thanks for submitting!