1800+ Dedicated Employees 50+ Locations in the US and Canada 110+ Mobile Laboratories Our Journey Founded in 2000 in Alabama as a small stack testing company, Alliance has since expanded into a full-service environmental compliance provider and a recognized leader in the North American market. A lot has changed for us since then, but one thing never will—we still put our clients first. EMPLOYEES 2000–2012 BUILDING THE BUSINESS 2012–2016 GROWTH THROUGH INVESTMENT 2016–2021 RAPID GROWTH & SERVICE LINE EXPANSION 2021–TODAY SCALING A NATIONAL/GLOBAL PLATFORM 2000 2 2005 10 2010 20 2015 50 2018 125 2020 675 2021 820 2022 945 2023 1,430 2024 1,720 2025 1,805 Stack Testing Lab Testing LDAR Ambient Air Consulting CEMS Software We are a new kind of environmental services company—powered by innovation, focused on service, and committed to your success. Acquisitions Since 2017, we have worked to increase our reach and improve our services through investments in our people, technology, and with acquisitions of these core businesses. Expand to see acquired companies 2023-2024 DeNovo Global Technologies Ranger Analytics (Merger) GOLD, LLC CEMServices Rogers & Callcott Advanced Industrial Resources CEMSI Integrity Air Monitoring RSB Environmental Ortech Consulting Chemtech Consulting Group CEC Stack Test Group Summit Env. Tech Orange Coast Analytical Fremont Analytical Chester LabNet 2021-2022 GBMc & Associates EcoTest GuideWare CK Environmental InspectionLogic Pace Environmental CEM Solutions Interpoll Ace Consultants AAS Horizon Air Measurement Services Air Quality Services O’Brien & Gere EMSI Aeros Environmental 2017-2020 Almega Environmental and Technical Blue Mountain Summit Inspection Services (BV) METCO Environmental Air Pollution Testing Golden Specialty Our Reach With over 50 testing and laboratory locations across the United States and Canada, we are where you need us. Leadership Our team stands behind everything we do and commits to helping you succeed. From our frontline engineers and technical experts to our senior leaders, we are here for you. FROM LEFT: Chris LeMay, Jim Herr, Kim Van Soelen, Premal Vora, Tyler Rudman Chris LeMay Chief Executive Officer Tyler Rudman Chief Financial Officer Kim Van Soelen Chief Commercial Officer Jim Herr Chief Administrative Officer Premal Vora Chief Strategy Officer Learn more about Alliance Technical Group. Creating new possibilities and outcomes for our clients. Since 2000, we have been solving the problems of environmental management and compliance for some of the foremost companies and brands in North America. From on-site testing and monitoring, to laboratory testing and regulatory strategy, we are pushing out the limits of what is possible. We help our clients achieve their business objectives while also supporting their sustainability goals. OUR SERVICES

Services / On-Site Testing / Source Testing / Stack Testing Stack Testing Expect the best from the largest stack testing provider in the U.S. Receive consistent, responsive service from skilled stack testing professionals. Expect best in class response for deliverable creation and clear accurate reporting to help you meet all of your compliance demonstration and performance requirements. Stack Testing Services Compliance Demonstration | Engineering/Investigative Test Programs | On-Site FTIR Spectroscopy | Specialty Testing | Low Level PM Sampling | Performance Specification Testing (RATA) Compliance Demonstration PM (filterable PM, condensable PM, PM-10, PM-2.5, OTM-37) Metals, including Hg Acid gases Combustion gases Volatile and Semi-Volatile Organics (total and speciated) Dioxins and Furans Formaldehyde Specialty Testing (PFAS, EtO, Combustors) Baghouses, Cyclones, and ESPs FGD and dry scrubbers SCR and NSCR Oxidizers (thermal, regenerative, and catalytic) Engineering/Investigative Test Programs Do you have a high priority compliance test on the calendar and want advanced assurance that your process and controls are performing adequately? Are you experiencing process-related challenges that accurate emissions data could help diagnose and solve? Our experienced testing professionals are well equipped to help you design a measurement program to address all the above safely and efficiently. And our fully integrated consultants are accessible for SME consultations. Performance Specification Testing (RATA) Alliance provides Part 60, Part 63, and Part 75 continuous emissions monitoring system (CEMS) evaluations and relative accuracy test audits (RATA) for all manner of CEMS configurations within all applicable industries. From routine gas and flow RATAs to highly complex GC, PM and Mercury RATAs, we have you covered. Specialty Testing One of Alliance’s key stack testing differentiators is our ability to plan and execute testing solutions for the most complex emissions targets and scenarios. Dilution Based Sampling for Particulate Matter (OTM-37) PFAS Sampling (OTM-45 & OTM-50) Diluted CEMS Sampling for High Moisture or Highly Concentrated Sampling Locations Direct Interface Gas Chromatography for Speciated VOC and Sulfur Compounds OOOOb Combustor Compliance Testing (OTM-52) Hazardous Waste Combustion CPT Programs Low Level PM Sampling When facing the rapidly decreasing compliance thresholds for PM, PM-10, and PM-2.5, you need a highly experienced testing partner to create a testing plan to mitigate the many challenges associated with accurately quantifying very low levels of particulate matter. When every grain of PM matters, Alliance ensures accuracy with advanced equipment, a fully developed internal laboratory network, and nuanced quality control procedures. On-Site FTIR Spectroscopy Whether demonstrating compliance with a very low-level pollutant standard (formaldehyde, ethylene oxide, HCl) or addressing complex process gas stream challenges, Alliance has the advanced instrumentation and a deep bench of FTIR spectroscopists to help navigate the complexity inherent to this sampling approach. REQUEST INFORMATION “People like what they do at Alliance. I think they understand it's a very important role. That pride tells our clients they’ve made the right choice.” Snapper Armstrong Vice President, Stack Testing VIEW OUR ACCREDITATIONS View Accreditations Learn more about Source Testing. A History of Loyalty and Service: What makes a dedicated Stack Team. Loyalty isn’t just a word; it’s a practice. Marking his 20-year anniversary at Alliance, Snapper Armstrong, Vice President of Sales for ... Harnessing Renewable Natural Gas: A Sustainable Path to Climate Goals and Methane Reduction Reducing methane emissions has become a critical focus in the fight against climate change. Methane, a greenhouse gas, has over 25 times ... Saluting Earth Month Heroes: The Secondary Aluminum Industry During Earth Month, Allianc Technical Group honors our industry partners dedicated to environmentally responsible practices that generate... Back to All Services

Services / Environmental Compliance / Environmental Consulting Environmental Consulting Answers you want for insights you need. A trusted authority on refining, chemical manufacturing, and oil & gas industries, Alliance partners with you to provide professional guidance, specialized services, and precision-driven solutions in air, water, and natural resources. With proficient and efficient environmental consultants on your team, you can be confident in accuracy, consistency, and responsiveness. Security of one source. Working with one proven, capable partner helps simplify processes, reduce risks, and build stronger business relationships with greater strategic value. Compliance peace of mind. With active roles in various trade groups, our consultants assure your regulatory compliance with comprehensive plans and step-by-step support. Short response times guaranteed. It’s never a good time for an incident, but our rapid-deployment teams get clients back on track fast, with mitigation strategies to minimize costs and protect reputations. Services & Solutions Environmental Consulting Air Quality | Water Quality | Natural Resources | Engineering Specialists in designing and building environmental programs that work, our consultants help you identify, understand, and address potential areas of environmental vulnerability and risk. Air Quality Services Air Permitting Collaborating with environmental, operational, and project teams, we deliver permit applications that effectively minimize compliance risks. We also work with local, state, and federal agencies to secure permits swiftly. Air Compliance Get tailored compliance and tracking solutions developed specifically for your organization. Air Dispersion Modeling Providing nationwide expertise in air pollutant dispersion modeling, Alliance consultants conduct NAAQS impact evaluations and state toxics screenings, with proficiency in various air dispersion models such as SCREEN3, ISCS, AERSCREEN, AND AERMOD. Reporting Building on a significant track record of successful reports that adhere to regulatory requirements, Alliance also provides the detailed, internal documentation required to obtain responsible official certification. GMAP (Geospatial Measuring of Air Pollutants) On-Demand Mobile Monitoring From identifying unknown emission sources and enhancing existing programs to assisting with EPA inspections and responding rapidly during incidents—GMAP uses real-time technology to deliver live data that can be accessed while in the field, allowing for immediate compliance. Risk Reduction | Real-Time Air Monitoring | Detailed Snapshots | Customized Backed by extensive expertise from EPA’s Office of Research and Development (ORD) GMAP program. Odor Assessment Services Odors from agricultural, commercial, industrial, and municipal sources can negatively affect nearby residents. Alliance offers specialized solutions for all your odor challenges. Odor Impact Assessments | Odor Emission Source Sampling |Odor Compliance Testing | Odor Consulting – Expert Witness Testimony Water Quality Services Hydrological & Hydraulic Studies Assisting you with TMDL, waste load allocations, and flow analysis, our specialties include dye tracer studies, flow modeling (such as HEC-RAS), and direct flow measurements. We help calculate regulatory low flows (e.g., 7Q10) to adjust pollutant load limits, working closely with state agencies, USGS, and EPA to ensure your water quality projects are successful. NPDES Permitting Your goal is our mission—to minimize costs associated with meeting water quality standards and effluent guideline requirements. We cover permit application development, review and negotiations; Adjudication support, reparation of pollution prevention plans, and NPDES data systems management (including DMR preparation). Stormwater Assisting industrial, construction, and municipal clients achieve cost-effective compliance with local, state, and federal stormwater discharge regulations. Natural Resources Biological Assessment Leveraging advanced techniques for fish, macroinvertebrate, periphyton, zooplankton, phytoplankton, and habitat analysis across diverse environments, our specialists are equipped to handle multiple site surveys in various waterbody sizes. Human Health Ecological Risk Assessment With more than 50 years of combined experience in water, groundwater, soil/sediment, and air, our team of scientists, toxicologists, and engineers provide ecological and human health risk assessments for industrial clients, with concerns ranging from heavy metals to organic pollutants. Stream and Wetland Restoration and Mitigation From step-pools and riffles to bank stabilization and in-stream habitat features, our team of ecologists, hydrologists, engineers, and wetland scientists collaborate to effectively restore and enhance wetland habitats for mitigation and water/stormwater treatment. USACE Permitting Providing strategic US Army Corps of Engineers (USACE) permitting services to reduce, avoid, or minimize impacts on Waters of the US, while controlling permitting and mitigation costs. Civil and Environmental Engineering Water, Wastewater, and Stormwater Design We provide solutions to wastewater, stormwater, and potable water infrastructure requirements for municipal, commercial, and industrial clients. Site Design Our site design capability includes planning, permitting, design, bidding, construction administration, and construction inspections. We serve residential and commercial developments, railways, and industrial facilities. Permitting & Funding Assistance We provide regulatory guidance and compliance assistance navigating the application of various federal and state environmental and permitting programs, and low-interest funding and loans. Industrial Process Capabilities Alliance has a team of engineers experienced in project studies and the design of industrial process solutions for chemical, pulp & paper, and pharmaceutical plants. Process and Mechanical Engineering As part of our industrial engineering services, we provide process and mechanical engineering studies to improve productivity by identifying, correcting or preventing weaknesses in the manufacturing and process systems. Surveying and Mapping Alliance has both licensed surveyors and GIS mapping experts in order to provide a seamless approach to every job and a higher-quality end result. REQUEST INFORMATION “Compliance is not just a requirement but a commitment. Our proactive approach to environmental compliance ensures that we not only meet regulatory standards but exceed them—leading the way in assisting our clients with their compliance goals.” Jeff Lask Senior Vice President, Environmental Compliance Division HON RTR Amendment Years of Details. Clear Road to Compliance. The final EPA Risk and Technology Review (RTR) amendments for Hazardous Organic NESHAP (HON) became effective on July 15, 2024 . It’s important to know what, when and how to plan for your course of action. Find critical compliance dates, requirements, and advice as you begin your implementation programs. Back to All Services

DECATUR, Alabama, Jan. 13, 2025 – Alliance Technical Group LLC, a leader in environmental compliance, on-site testing and monitoring, and laboratory testing and analysis, continues its strategic expansion as it announces the acquisitions of DeNovo Global Technologies, Inc 's air testing division, Gas Ops Leak Detectives, LLC (GOLD) and a merger with Ranger Analytics Inc. DeNovo is a Texas-based company that specializes in advanced environmental monitoring solutions and offers state-of-the-art technologies for accurate data collection and analysis. GOLD is renowned for its expertise in leak detection and repair (LDAR) services, including extensive optical gas imaging (OGI) capabilities, and for providing quality and affordable compliance solutions to clients in the oil and gas industry. GOLD is a Colorado-based company that currently services nine states spanning from the Rocky Mountains to the Southern Plains, adding to the geographical depth of Alliance's services. Ranger Analytics is a full-service, Texas-based analyzer and gas detection systems company, serving industrial, air-quality, and maritime markets with mobile emissions, continuous emissions monitoring systems (CEMS), and gas detection services. "Adding these companies to the Alliance family builds on our 25 years of environmental leadership," said Chris LeMay, CEO of Alliance Technical Group. "Each brings unique expertise that complements our current service offerings and expands our reach to new markets. These additions continue Alliance's rapid growth trajectory while maintaining the best-in-class response and quality standards we've established over the past quarter century.”

As awareness rises about per- and polyfluoroalkyl substances ( PFAS ) entering into our ecosystem, so does the urgency for accurate, dependable detection. Associated with certain cancers, endocrine disruption, fertility issues, birth defects, and organ damage, PFAS poses significant public health risks. The EPA is taking action  with several new initiatives, including the “First-Ever National Drinking Water Standard for PFAS” issued in April 2024, plus other rules for PFAS limits for non-potable water, air, soil, and waste management sources.  PFAS Experts at Work  See how Alliance’s environmental laboratory specialists conduct accurate PFAS analyses. Comprehensive PFAS Testing Services for: Applied Technologies Our labs utilize advanced liquid chromatography triple quadrupole mass spectrometry systems (LC/MS/MS) for PFAS analysis. This preferred technology offers unparalleled selectivity and sensitivity, enabling us to handle extremely low detection rates with ease. Robust Quality Control A 3-tiered data review process ensures all testing method criteria are met, giving you confidence in your results: Top analysts carefully examine the data. Data is sent to our QC department for thorough evaluation. Dedicated project managers review the final results. Full-Service for Client-Specific Needs All PFAS analytical steps are handled for you in Alliance labs, including method development, extraction, analysis, and data upload. Highly skilled experts work with you to customize solutions based on your state’s regulatory requirements. We’re at the forefront of PFAS analysis with the most modern methods at the lowest detection limits. Reach out to discuss your PFAS testing needs or consult with one of our experts regarding your PFAS compliance requirements. Contact Alliance > Discover All  That Is Alliance  As your strategic partner in environmental testing, monitoring, and analysis, we have a full suite of technical and compliance services for all your environmental needs.  Analytical & Environmental Lab Services | Stack Testing | Temp CEMS | CEMS | LDAR | Ambient Air | Engine Testing & Emissions Solutions | Software & Technology | Environmental Consulting Services: Air & Water Quality, Natural Resource Management Contact Alliance for end-to-end solutions that support your compliance and operational excellence. info@alliancetg.com  | (256) 351-0121

Decatur, AL – November 8, 2024 – Alliance Technical Group, the premier leader in environmental compliance, on-site testing and monitoring, and laboratory testing and analysis, announces the acquisition of CEMServices, Inc. Since 1992, CEMServices, Inc., located in Norton, Massachusetts, has provided consistent, reliable stack testing and continuous emissions monitoring systems (CEMS) services across New England and the Mid-Atlantic. With a strong client base across nine states and over 30 years of delivering exceptional value, CEMServices is known for its experienced team and deep regional expertise. “We are very excited to join Alliance Technical Group,” said Chris Cutting, Founder and President of CEMServices. “The resources and technical expertise at Alliance will allow us to support our clients with improved responsiveness, new technologies, and an expanded service offering. Our clients can now benefit from Alliance's advanced solutions and commitment to excellence.” The acquisition of CEMServices not only strengthens Alliance’s geographical footprint in the Northeast and Mid-Atlantic regions but also adds 20 experienced professionals to Alliance’s team. This addition enhances our temporary CEMS offerings and strengthens multiple service lines, including stack testing, CEMS maintenance, and CEMS auditing. This acquisition marks Alliance’s sixth in 2024 and underscores our commitment to providing unparalleled service and technical expertise across the United States. “The acquisition of CEMServices deepens our client base and grows our on-site testing and monitoring team in two strategic growth regions,” said Chris LeMay, CEO of Alliance Technical Group. “We are excited to integrate technical professionals with extensive knowledge into our industry-leading teams, further enabling us to meet the evolving needs of our clients.” About Alliance Technical Group: Alliance Technical Group, LLC (Alliance), headquartered in Decatur, AL, is the premier environmental services and solutions company dedicated to helping clients achieve their environmental goals and navigate regulatory changes. With more than 1,700 employees located in 50-plus offices across the U.S. and Canada, Alliance specializes in Environmental Compliance, On-site Testing and Monitoring, and Laboratory Testing and Analysis. Driven by innovation, committed to service, and focused on client success, Alliance delivers on the promise of reliability, results, and responsiveness. Learn more about how we help clients maximize their environmental opportunities at www.alliancetg.com.