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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

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.

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

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

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

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

Metals Analysis CT Laboratories has extensive experience in metal analyses. We maintain ICP, Cold Vapor and Furnace AA capabilities. This means we can offer you low detection limits to meet the needs of your project. Metals by GFAA Methods: EPA 200.9 EPA 7010 Analytes: Antimony Arsenic Lead Selenium Thallium Matrices: Drinking Water, Water, Solid, Wipes Hardness Methods: EPA 6010C SM 2340B Matrices: Water Mercury Methods: EPA 245.1 EPA 7470A EPA 7471B Matrices: Water, Drinking Water, Solid Hexavalent Chromium Methods: EPA 7196A Matrices: Water Metals by ICP Methods: EPA 200.7 EPA 6010C EPA 6010D Analytes: Aluminum Antimony Arsenic Barium Beryllium Boron Cadmium Calcium Chromium Cobalt Copper Iron Lead Magnesium Molybdenum Nickel Potassium Selenium Silver Sodium Strontium Sulfur Thallium Tin Vanadium Zinc Matrices: Water, Solid, Sludge, Wipes 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

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!

Our Project Managers. CT Laboratories firmly believes that communication is the key to every successful project. We will assign an experienced chemist as a dedicated Project Manager to handle all your needs. They can provide information for inclusion in your QAPP and can meet with you up front to discuss the project, making sure all questions and scenarios are discussed before the work arrives. Your PM will input your project-specific requirements (special compounds, reporting limits, action levels or report formats) into our LIMS. When the work arrives at the lab, you will be notified that the samples arrived safely and of their condition. Any problems, you will be notified immediately. After your reports have been sent, the project manager will be there to discuss the data with you. Learn more about Reporting and Electronic Data Deliverables here . Dennis Linley Business Development Sales & Marketing BS in Wildlife Biology Time at CT Laboratories: 26 years Areas of Expertise: Sales & Marketing Project Management Client Relationships Sample Receiving & Processing Reporting contact: dlinley@CTLaboratories.com 608.963.4964 Eric Korthals Senior Project Manager 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. Report development and customization. Inorganic chemistry and microbiology Contact: EKorthals@ctlaboratories.com 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 Contact: JSerstad@ctlaboratories.com Brett Szymanski Project Manager / Laboratory Director BA in Management & Human Resources Time at CT Laboratories: 10 years Areas of Expertise: Oversight of operations, strategic planning, monitoring QA/QC issues, personnel and workload allocations. Project Management for Department of Defense , EPA/ Brownfields/ Superfunds , and other high-profile projects nationwide. Organics Analysis on GC/MS. Field Sampling Consultant. Contact: BSzymanski@ctlaboratories.com Email information@ctlaboratories.com Call 608-356-2760 Follow

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

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