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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.

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 (2025) New Year's Day (2025): Wednesday, January 1st Closed Martin Luther King Jr Day: Monday, January 20th Open President's Day: Monday, February 17th Open Memorial Day: Monday, May 26th Closed Juneteenth: Thursday, June 19th Open Independence Day: Friday, July 4th Closed Labor Day: Monday, September 1st Closed Indigenous People's Day (also observed as Columbus Day): Monday, October 13th Open Veteran's Day: Tuesday, November 11th Open Thanksgiving: Thursday, November 27th Closed Thursday & Friday Christmas Day: Thursday, December 25th Closed Thursday & Friday New Year's Day (2026): Thursday, January 1st Closed

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

Department of Defense Services CT Laboratories is a WOSB providing analytical support to hundreds of DoD projects nationwide. The laboratory is DoD ELAP accredited in compliance with the DoD Quality Systems Manual (QSM). We hold current analytical services contracts with USACE Louisville, Omaha and Baltimore Districts and perform numerous methods in support of DoD projects, such as 8330B explosives, nitroguanidine and nitrocellulose and chemical warfare degradation products. Testing Services United States DoD Branches Served Coast Guard Projects 12-State Due Diligence Lead Survey Ft. Myers, FL Lake Michigan Facilities – MI Lake Michigan Facilities – WI CGC Yorktown, VA CGC Ouachita, TN District 9 Dredging Projects USACE/ACM Projects Aberdeen Proving Ground, MD Redstone Arsenal, AL Pueblo Chemical Depot, CO Chicago District - Sediment/Elutriate Badger AAP, WI Ft. Leonard Wood, MO Savanna Army Depot, IL Baltimore District - Ft. Belvoir Support Kansas AAP, KS Ft. Meade/Tipton Airfield, MD Ravenna AAP, OH St. Paul District - Mississippi River Sediment Ft. Wingate, NM Iowa AAP, IA Ft. Hamilton, NY Omaha District - Lincoln Atlas Missile Sites Jefferson Proving Ground, IN Ft. Polk, LA Camp Reynolds, PA KC District – MO, KS, IA Water Quality Kinchloe AFB, MI Anniston AAP, AL Picatinny Arsenal, NJ Louisville District – MI FUDs Radford AAP, VA Navy Projects Naval Weapons Station Yorktown, VA Philadelphia Naval Shipyard, PA Reserve Center La Crosse, WI NSWC Indian Head, MD Craney Island Naval Reservation, VA Former NOS Forest Park, IL NAS JRB Willow Grove, PA Former Nansemond Ordnance Depot, VA Thurmont Navy Support Facility, MD NAS JRB New Orleans, LA JEB Little Creek, VA National Guard Projects ANG SE facilities: MS / AL / FL MT / ID ANG facilities General Mitchell, WI Selfridge ANG, MI 178th Fighter Wing, OH 177th Fighter Wing, NJ Twin Cities ANG, MN Volk Field CRTC, WI Alpena ANG, MI Sioux City ANG, IA Hulman Regional ANG, IN Truax Field, WI Air Force/AFCEE Projects Nationwide Soil Survey (42 AFBs) King Salmon, AK Seymour Johnson AFB, NC Tinker AFB, OK Tyndall AFB, FL McGuire AFB, NJ Wright-Patterson AFB, OH McConnell AFB, KS Kunsan AFB, Korea Grand Forks AFB, ND FE Warren AFB, WY England AFB, LA

We test for Bacteria (E. coli and Fecal Coliform) in drinking water and other matrices. Biological Testing CT Laboratories offers a wide range of biological testing services. We also offer specialty services like Microcystin analyses, Heterotrophic plate counts, and Algal species composition. Our chemists are experienced, and can handle large volumes of samples throughout the busy testing seasons of the year. Please see our sample receiving hours Chlorophyll A Internal Procedure adapted from SM 10200 H - 2011 E. coli SM 9221 Fecal Coliform & Total Coliform SM 9222D SM 9223 Heterotrophic Plate Count SM 9215D Back to Testing Services

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

Surface Water & Sediments CT Laboratories LLC has extensive experience analyzing surface water, pore water, sediments and elutriates in support of multiple USACE Districts, US EPA, State and local government agency projects. Our Projects Surface Water Projects Seasonal Lakes Monitoring - USACE Kansas City District Seasonal Lakes Monitoring - USACE Louisville District TMDL Watershed Monitoring Sediment Testing Projects Mississippi and Missouri Rivers - USACE St. Paul District Waukegan Harbor, IL - USACE Chicago District Gruber's Grove Bay Dredging Typical Testing Procedures Elutriate Generation Including Standard Elutriate, Modified Elutriate, Effluent Elutriate, and State Specific Modifications Surface Water Testing Chlorophyll A, Microcystin, Pesticides, Anions, TOC/DOC, Ammonia (TKN), Metlas, TDS/TSS/TVS, BOD/COD, Phytoplankton, PAH, Cyanide, DRO/GRO, Total/ortho-phosphorus Sediment Testing Grain Size, Atterberg Limits, Specific Gravity, Bulk Density, Phosphorus, Cyanide, TOC, Organics, Pesticides, DRO/GRO, PCBs, PAH, Hexavalent Chromium See all 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."

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

TESTING SERVICES CT Laboratories LLC offers a comprehensive range of environmental testing services. The matrices we test include: surface water, ground water, drinking water, soil, sludge, sediment, elutriate, and other wastes. Contact us today to learn more about our capabilities and pricing. We do a lot, but we can't do it all. To provide the most comprehensive range of analytical services possible, we have established relationships with several large business laboratory networks and specialty laboratories. We work closely with these carefully chosen partners to provide our clients with consistent turnaround, high quality analytical results and compatibility in data deliverables. We maintain a register of each qualified subcontract laboratory, including their current DoD ELAP and NELAP accreditation scopes. We provide test kits for private wells. View more information here . Organic Analyses CT Laboratories has two teams dedicated to the analysis of Volatile and Semi-Volatile Organic Compounds using GC, GC-MS, and HPLC Technologies to meet your low-level needs. View More Metals CT Laboratories has extensive experience in metal analyses. We maintain ICP, Flame and Furnace AA capabilities. This means we can offer you low detection limits to meet the needs of your project. View More 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. View More Biological Testing CT Laboratories offers a wide range of biological testing services. We also offer specialty services like Microcystin analyses, Heterotrophic plate counts, and Algal species composition. Our chemists are experienced, and can handle large volumes of samples throughout the busy testing seasons of the year. View More Physical & 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. View More 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. View More

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

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!