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About CT Laboratories LLC is a full-service environmental laboratory located in Baraboo, WI with over 25 years of experience providing analytical testing services to a wide range of Federal and commercial projects nationwide. The company is classified as a woman owned small business under NAICS Code 541380, Testing Laboratories. Additionally, over half of our staff and analysts are women. Learn more about CT Laboratories here. ​ Salary and Benefits: Starting salary is commensurate with experience. Holiday pay and Paid Time Off (PTO) Health & Dental Insurance Health Reimbursement Arrangement (HRA) Flexible Spending Account (FSA) Opportunities for over-time pay 401(k) Current Job Postings If no jobs are currently posted, you may still submit an application. We keep all resumes on file for 6 months in the event that a position opens. ​ How to Apply Send the following in an email to information@ctlaboratories.com . The Subject of your email should be in the following format: "Application - Last, First" Resume / CV Cover Letter Reference(s) ​ Note: If you have not heard back from a representative within 7 business days, please contact 608-356-2760 and ask for Brett. We routinely check our spam folders, but do not catch everything. ​ All resumes are kept on file for 6 months after they have been received. ​

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

Specialty Testing In addition to our routine analytical capabilities, CT Laboratories LLC offers specialty testing services and can help develop new procedures to suit your needs. ​ These analyses support various environmental regulatory programs, including: Resource Conservation and Recovery Act (RCRA) Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Superfund Clean Water Act (CWA) National Pollution Discharge Elimination System (NPDES) Safe Drinking Water Act (SDWA) Federal Program Support: Army Corps, National Guard, Coast Guard, Navy, Air Force Various State Regulatory Programs: Underground Storage Tank (UST), Landfill Monitoring, etc. Total, Fine and Coarse Lead by MDEQ SOP 213 This procedure is typically performed for EPA projects in order to characterize the lead fractionation of the soil (i.e., the fine & coarse fractions). ​ The Michigan Lead procedure involves sieving an air-dried soil sample into the coarse fraction (particle size > 250-µm) and the fine fraction (particle size < 250-µm). The % coarse and % fine values are determined via calculation. The coarse and fine fractions are then analyzed for lead via EPA 6010C. Finally, the total lead concentration is calculated via a weighted average of the coarse lead fraction and the fine lead fraction. Tissue Analysis: Pesticides, PCBs, Metals, Percent Lipids These internal methods are not certified by our accreditation agencies. These internal methods have been developed to fulfill client-specific needs and projects. Thiodiglycol and other Chemical Warfare Agent degradation products This method is designed to follow procedures developed in-house and to meet the requirements of EPA SW-846 method 8000 for ground water, surface water, and waste water. ​ A UPLC is employed in conjunction with a UV detector. Flame Retardants: PBB, HBB This method is designed to follow procedures and QC requirements found in EPA SW-846 method 8081B in order to determine quantities of HBB and PBB compounds found in a variety of sample matrices. HBB - Hexabromobenzene PBB - Firemaster BP-6 2,4- and 4,4- DDD, DDE, and DDT Breakdown products of DDT can be quantified using the 8081B methodology for pesticides. 1,4-Dioxane by 8270-SIM A Solid Phase Extraction methodology was developed for liquid samples using 8270D/E guidelines. The internal soil extraction method references 8000D. Invitro Bioaccessibility (IVBA) of Lead Internal method PR009 developed at request of EPA using SW846 1340 as a reference. ​ Contact us for more information. Back to Testing Services

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."

General Chemistry At CT Laboratories, our General Chemistry (or wet-chem) department is one of our busiest. We employ experienced chemists that are well versed in the methods that they are responsible for. There are many short hold time analyses in this department. Our staff works around a detailed time management schedule to make sure all results are generated accurately and efficiently. ​ Please see our sample receiving hours Alkalinity (carbonate, bicarbonate) Method EPA 310.2 SM 2320B Matrices Water BOD - 5 Day (total, soluble, carbonaceous) Method SM 5210B Matrices Water Cyanide (reactive) Method SW-846 Ch. 7.3 Matrices Water, Solid Hardness Method EPA 6010C SM 2340B Matrices Water Nitrogen, Organic Total Method EPA 350.1 EPA 351.2 Matrices Water, Solid Oil & Grease - HEM (with SGT) Method EPA 1664A Matrices Water Phosphorus Method EPA 365.1 EPA 365.4 Matrices Water, Solid Solids, Settleable Method SM 2540F Matrices Water Solids, Percent Method EPA 8000C SM 2540G Matrices Solid Solids, Volatile Suspended Method EPA 160.2 EPA 160.4 SM 2540D Matrices Water Sulfide, Reactive Method ASTM D4978 Matrices Water, Soil Ammonia Nitrogen Method EPA 350.1 SM4500-NH3H Matrices Water, Solid COD Method EPA 410.4 EPA 5220D Matrices Water Flashpoint Method EPA 1010A Matrices Water, Solid Hexavalent Chromium Method EPA 7196A Matrices Water Nitrogen, Total Method EPA 351.2 EPA 300.0 EPA 9056A Matrices Water, Solid Organic Carbon, Total Method EPA 415.1 EPA 9060A Lloyd Kahn Matrices Water, Solid Phosphate Method EPA 9056A Matrices Solid Solids, Total Dissolved Method EPA 160.1 SM 2540C Matrices Water Solids, Total Suspended Method SM 2540D Matrices Water Specific Gravity Method SM 2710F Matrices Water, Solid Anions (bromide, chloride, fluoride, nitrate, nitrite, ortho-phosphate, sulfate) Method EPA 300.0 EPA 9056A SM 4110B Matrices Water, Solid Cyanide (total) Method EPA 335.4 EPA 9012B Matrices Water Free Liquids Method EPA 9095B Matrices Solid Nitrate + Nitrite Method EPA 353.2 Matrices Water, Solid Nitrogen, Total Kjeldahl Method EPA 351.2 Matrices Water, Solid pH Method EPA 150.2 EPA 9040C EPA 9041A SM 4500H+B EPA 9045D Matrices Water, Solid Residue, Total Method SM 2540C Matrices Water Solids, Total Method SM 2540B Matrices Water Solids, Total Volatile Method EPA 160.4 SM 2540D Matrices Water, Solid Sulfide, Total Method EPA 376.1 EPA 9034 Matrices Water Back to Testing Services

Say Hello We would love to hear from you. Feel free to reach out at any time with questions, comments, or requests. Phone Email 608-356-2760 information@ctlaboratories.com Social Media First Name Last Name Email Message Send Thanks for submitting! Visit Us Are you dropping off samples or need questions answered in person? Call ahead so we can schedule a time to meet with you. Address 1230 Lange Court Baraboo, Wisconsin 53913 608.356.2760 Opening Hours Mon - Fri Saturday ​Sunday 8:00 am - 5:00 pm Closed Closed Holidays & Sample Receiving Hours

Landfills CT Laboratories LLC has over 30 years of experience providing analytical support for landfills in Wisconsin and nationwide, including groundwater monitoring, leachate and compost/biopile testing. Specialty services include low level VOC analyses (Vinyl Chloride down to 0.02 ppb) and custom trend and exceedance reports. WE DO TCLP, SPLP, and ASTM LEACHATES! We serve all types of landfills Major Commercial Solid / Hazardous Waste Landfills Multiple National / Regional Companies​ Commercial Landfill Recycling / Recovery Companies Construction & Demolition Landfills Municipal Landfills City of Adams Landfill​ Boscobel Landfill Monroe County Landfill Dane County Landfill Sauk County Landfill West Allis Landfill Columbia County Landfill Juneau County Landfill Federal Oxford Federal Landfill​ Active Military Installations Ft. McCoy​ Former DoD Facility Landfills ​Badger AAP Landfill​​ Pueblo Depot Landfill / Roll-Offs Lockbourne AFB Landfill Anniston AAD C&D Landfill Fort Custer Dump Site 500 Landfill sites in Wisconsin currently require active monitoring. Let us help you meet your regulatory needs!

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

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

Drinking and Waste Water Testing We work with our clients to make fulfilling your regulatory testing requirements as easy as possible, based around your sampling schedule. Each of our clients receive a dedicated supply of coolers stocked with the appropriate certified, precleaned sample containers, chain of custody forms, and sample labels. ​ Analytical results are reported in regulatory-required formats and provided via email or as a hardcopy. Turnaround times are adjusted for end-of-reporting period samples to ensure our clients receive their results in time to meet their compliance reporting deadlines. Typical Testing Procedures Drinking Water - Inorganics Cyanide - EPA 335.4 Fluoride - EPA 300.0 Nitrate - EPA 300.0 Nitrite - EPA 300.0 Sulfate - EPA 300.0 Drinking Water - Volatile Organic Compounds VOCs - EPA 524.2 Waste-Water and Sludge BOD, Ammonia, TKN, Phenolics Anions, Oil & Grease, Cyanide Total / Fecal Coliform Total Phosphorus, Water Extractable Phosphorus Metals, Total Recoverable Metals Pesticides, PCBs Total Suspended Solids, Total Volatile Solids Drinking Water - Inorganics (Metals) Antimony - EPA 200.9 Arsenic - EPA 200.9 Barium - EPA 200.7 Beryllium - EPA 200.7 Cadmium - EPA 200.7 Chromium - EPA 200.7 Copper - EPA 200.7 Lead - EPA 200.9 Mercury - EPA 245.2 Nickel - EPA 200.7 Selenium - EPA 200.9 Sodium - EPA 200.7 Thallium - EPA 200.9 Clients & Reporting We provide analytical results in regulatory-required formats and adjusts sample turnaround time to ensure on-time compliance reporting . All of our routine waste-water clients receive a dedicated sample bottle and cooler supply. As each set of samples arrives at the laboratory, the cooler is repacked with the appropriate sample bottles and delivered back to the client the next day. We Test Private Wells! Click here for more information. "We have a long standing working relationship with CT Labs and look forward working with them for long into the future." Satisfied client for 30+ years

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

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: 19 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: 14 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: 26 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: 3 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: 23 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: 20 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: 9 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: 15 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: 2 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: 15 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: 31 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: 32 years ​ Areas of Expertise: Volatile Organic Compounds analysis. Metals analysis. Instrumentation & Maintenance - GC/MS and GC. Team management & leadership