Discover comprehensive environmental testing services for air, water, soil, and waste matrices. Reliable results tailored for you. Services / Lab Testing & Analysis / Environmental Labs Environmental Labs Full-service environmental analysis. Streamline your project delivery with a one source provider for all your testing and analysis. Reduce risks with fast, reliable results, backed up by exceptional service from Alliance’s advanced labs. Comprehensive services. Our expansive national network of labs with 40+ state and TNI accreditations cover the full spectrum of advanced environmental testing and analysis for Air, Water, Soil, and Waste matrices. Industry-leading experience. Utilizing state of the art equipment and methods, the most experienced technical professionals, chemists and scientists in the industry are focused on delivering your data with maximum ease and minimum fuss. Client-centric consistency. Providing fast turnaround and consistently on-time results, with data reports and service tailored to our clients' specific testing and compliance requirements. Services & Solutions View Accreditations & Certifications Water Testing Extensive knowledge of the permitting and testing requirements for all water matrices complements extensive analytical capabilities so Alliance delivers fast, applicable data to you in the precise format you’ll need. Wastewater & Non-Potable Water Drinking/Potable Water Groundwater/Monitoring Wells Stormwater Testing NPDES (National Pollutant Discharge Elimination System) Soil and Waste Testing and Analysis Alliance supports compliance demonstration, quality assessment and remediation services with standard regulatory and advanced analyses of solid materials, including soils. Land Reuse/Site Characterization Soil testing to support investigations and remediation activity. Includes Toxicity Characteristic Leaching Procedure (TCLP) analyses for evaluating the potential hazardous substances that leach into the ground. Air & Source Emissions Analysis Precise measurement of air quality samples for pollutants and hazardous gases including Cr6+, Hg, Metal HAPS, Acid Gases, and complex organics. Ambient Air/Soil-Gas Analysis TO15 and 8260 analysis for volatile organic compounds in air and soil-gas samples. Specified Tests and Methods PFAS (Per- and Polyfluoroalkyl Substances) PFAS (sometimes called "forever chemicals”) have emerged as one of the most concerning persistent pollutants of today. Alliance conducts all emerging regulatory methods across matrices to support risk assessment, management and environmental compliance projects focused on these highly persistent pollutants. Volatile and Semi-volatile Organics Methods like 8260, 624 for volatile organics, and 8270, 625 for semi-volatile organics. Metals and Inorganics Precise detections of lead, mercury, RCRA metals, arsenic, chrome, cyanide and other analytes of toxicity concern. Including tests for TDS (Total Dissolved Solids), TSS (Total Suspended Solids), BOD (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand). Organic and Niche Testing PCBs, Pesticides, Herbicides PCDD/PCDF (Dioxins/Furans) TPH (Total Petroleum Hydrocarbons) Radioactive substances Hydrocarbon testing of Recycled Oil Special Requests Added matrices that require specific or specialized testing are available on request. REQUEST INFORMATION Alliance Lab Locations Meet all your environmental lab testing and analysis needs seamlessly by using advanced Alliance labs around the country with local, regional, and federal testing requirement expertise: Akron, OH Beaumont, TX Greenville & Columbia, SC Newark, NJ Midland, TX Rapid City, SD Seattle, WA Tustin, CA Wilmington, NC Watch our PFAS Testing Video “Our network of environmental labs provides clients with direct access to local expertise on regulations, supported by a national network with extensive technical resources, including niche services like PFAS, PCDD/PCDF, and radiochemistry analysis.” Jordan Laster Senior Vice President, Laboratory & Analytical Back to All Services

Founded in 2000, Alliance Technical Group has grown from a small Alabama stack testing company to North America's leading environmental services provider with 1,805 employees. 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 2200+ Dedicated Employees 60+ 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 2,205 Stack Testing Lab Testing LDAR Ambient Air Consulting CEMS Software 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 2025 Element One Labs Mid Continent Testing Labs Earth Analytical Sciences Global Analyzer Systems ESC Spectrum Environmental 360 Slipstream Environmental Services 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 METCO Environmental Air Pollution Testing Golden Specialty Our Commitment to Sustainability Our commitment goes beyond compliance—we create practical, scalable solutions that reflect our responsibility to protect our world. From reducing emissions and waste to supporting our people and communities, we’re focused on delivering meaningful progress today while building a more sustainable tomorrow. GET INVOLVED We are a new kind of environmental services company—powered by innovation, focused on service, and committed to your success. 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

Contact Alliance Technical Group for environmental testing, monitoring & lab services. 50+ locations across US & Canada. Call 256-351-0121 or email today. Reach out to us for your testing, monitoring, and lab needs. 256-351-0121 Experience a better way with Alliance. Request more information below or use the locations map to contact one of our offices directly. Our Reach With over 50 testing and laboratory locations across the United States and Canada, we are where you need us. Contact us

Decatur, Alabama, January 8, 2026 - Alliance Technical Group, LLC (Alliance), the leading provider of environmental testing services and solutions, announced the acquisition of Earth Analytical Sciences , Mid-Continent Testing Laboratories, Inc. , and Element One, Inc. , three established environmental testing laboratories serving clients across North America. The acquisitions were completed at the end of 2025. The addition of these organizations expands Alliance’s analytical capabilities and strengthens its growing North American network. Together, the three labs enhance Alliance’s ability to deliver high-quality analytical data across air, water, soil, and waste matrices while maintaining consistent service and turnaround times. Earth Analytical Sciences, Mid-Continent Testing, and Element One each bring specialized technical expertise, experienced teams, and strong regional client relationships. Their locations strengthen Alliance’s presence across key industrial and regulatory markets, improving geographic coverage and supporting faster, more efficient sample processing for clients across the United States and Canada. “These laboratories have built their reputations by doing the work the right way and standing behind their data,” said Chris LeMay, Chief Executive Officer of Alliance Technical Group. “By bringing these teams into Alliance, we are expanding our lab capacity and geographic reach while continuing to deliver the dependable results and regulatory insight our clients rely on.” Jordan Laster, Senior Vice President, Laboratory & Analytical at Alliance, added, “Each of these organizations operates with a strong technical foundation and a clear commitment to quality. Integrating them into our network allows us to increase analytical capacity, share best practices across locations, and provide our clients with consistent, defensible data backed by experienced professionals.” Clients of Earth Analytical Sciences, Mid-Continent Testing, and Element One will continue working with their existing lab teams, with access to Alliance’s broader technical resources and national environmental services platform. The acquisitions support Alliance’s continued investment in infrastructure and its strategy to build a laboratory network that delivers consistent, high-quality environmental testing services across North America. About Alliance Technical Group Alliance Technical Group, LLC (Alliance), headquartered in Decatur, AL, is the premier environmental services and solutions company dedicated to helping facilities achieve their environmental goals and navigate regulatory changes through the company’s On-site Testing and Monitoring, Environmental Compliance, and Laboratory Testing and Analysis offerings. Driven by innovation, committed to service, and focused on client success, Alliance delivers on the promise of responsiveness, reliability, and results.

New York, NY – January 6, 2026 – Blackstone (NYSE: BX) announced today that funds affiliated with Blackstone Energy Transition Partners and other Blackstone funds (“Blackstone”) have acquired Alliance Technical Group (“ATG”), a leading provider of environmental testing, monitoring, and compliance services. Founded in 2000 and headquartered in Alabama, ATG has grown into one of the largest full-service environmental compliance providers in North America, with more than 2,200 employees located in 60-plus offices and labs across the U.S. and Canada. ATG delivers a comprehensive suite of solutions – including source and lab testing, continuous emission monitoring systems (CEMS), and leak detection and repair, among others – to help businesses maintain regulatory compliance and safety, while driving efficiency through ATG’s data-driven insights. Chris LeMay, Chief Executive Officer at Alliance Technical Group, said: “Blackstone’s investment is a testament to our strong organic and strategic growth as a trusted market leader in the testing, inspection and compliance sector. With our partners at Blackstone, we look forward to continuing to scale and support our customers in navigating a complex, evolving regulatory landscape.” Darius Sepassi, Senior Managing Director, and Mark Henle, Managing Director, at Blackstone , said: “Alliance is a clear market leader in emissions testing and monitoring, providing mission-critical services that directly support customers’ compliance and operational performance. Chris and the ATG management team have built a diversified platform with a strong reputation for technical quality and reliability. Together, we are excited to leverage Blackstone’s scale and resources to help support ATG’s continued growth, serving its existing and new customers across the power, energy and industrial sectors.” David Foley, Global Head of Blackstone Energy Transition Partners, added: “Our investment strategy focuses on identifying leading businesses that we believe are positioned to disproportionately benefit from the growing demand for electricity and the broader energy transition. We are excited to back Alliance, which plays a critical role in helping energy and industrial facilities operate safely, efficiently, and in compliance with environmental regulations.” Alliance Technical Group represents the latest in a number of recent transactions Blackstone Energy Transition Partners has announced behind its high-conviction investment themes in electricity demand growth and the ongoing energy transition, including  Maclean Power Systems , Wolf Summit Energy ,  Hill Top Energy Center ,  Shermco ,  Enverus , Lancium,  Westwood , and others. Terms of the transaction were not disclosed. Harris Williams and RBC acted as financial advisor and Kirkland & Ellis acted as a legal advisor to Blackstone. Piper Sandler served as financial advisor and Jones Day served as a legal advisor to Alliance. About Blackstone Energy Transition Partners Blackstone Energy Transition Partners is Blackstone’s strategy for control-oriented equity investments in energy-related businesses, a leading energy investor with a successful long-term record, having committed over $27 billion of equity globally across a broad range of sectors within the energy industry. Our investment philosophy is based on backing exceptional management teams with flexible capital to provide solutions that help energy companies grow and improve performance, thereby delivering more reliable, affordable and cleaner energy to meet the growing needs of the global community. In the process, we build stronger, larger scale enterprises, create jobs and generate lasting value for our investors, employees and all stakeholders. Further information is available at  https://www.blackstone.com/our-businesses/blackstone-energy-transition-partners/ . About Blackstone Blackstone is the world’s largest alternative asset manager. Blackstone seeks to deliver compelling returns for institutional and individual investors by strengthening the companies in which the firm invests. Blackstone’s over $1.2 trillion in assets under management include global investment strategies focused on real estate, private equity, credit, infrastructure, life sciences, growth equity, secondaries and hedge funds. Further information is available at  www.blackstone.com . Follow @blackstone on  LinkedIn ,  X (Twitter) , and  Instagram . About Alliance Technical Group Alliance Technical Group, LLC (Alliance), headquartered in Decatur, AL, is the premier environmental services and solutions company dedicated to helping facilities achieve their environmental goals and navigate regulatory changes through the company’s On-site Testing and Monitoring, Environmental Compliance, and Laboratory Testing and Analysis offerings. Driven by innovation, committed to service, and focused on client success, Alliance delivers on the promise of responsiveness, reliability, and results. Learn more about how Alliance helps clients maximize their environmental opportunities: www.alliancetg.com

Facilities with commercial, industrial, or institutional refrigeration systems face a January 2026 compliance deadline. Under 40 CFR Part 84, the EPA has established two regulations that may apply to stationary sources: the Technology Transitions Rule (Subpart B) and new monitoring/recordkeeping/reporting requirements (Subpart C).   With proposed changes to compliance deadlines and a January 2026 deadline coming up, facility stakeholders should know how these regulatory provisions affect their facilities.   This article breaks down both regulations and gives you actionable steps to meet EPA requirements.  Common EPA Refrigerant Compliance Challenges  Contractor Management Gaps  Most facilities rely on contractors for refrigeration maintenance, creating a compliance risk. Your facility remains responsible for EPA refrigerant compliance even when contractors perform the work. Unless you have explicit agreements, verification processes, and oversight mechanisms, you may have compliance gaps.  Integrating New Chemicals into Existing Programs  Facilities with existing refrigerant management programs must expand them to include HFC substitutes that were exempt under old rules. This means identifying newly regulated refrigerants, updating inventory systems, revising recordkeeping procedures, training staff, and modifying reporting protocols.  Understanding Which Rules Apply  Both Subpart B and Subpart C can apply to the same facility with different triggering criteria. A cold storage warehouse, for example, may be subject to equipment replacement timelines under Subpart B while simultaneously facing monitoring requirements under Subpart C.  How Alliance Offers Specialized Consulting   Most air quality consultants don't actively track 40 CFR Part 84. At Alliance, we're one of the few air consulting firms that actively follow these refrigerant regulations, tracking proposed changes and monitoring compliance deadlines.  Tracking EPA Regulation Updates  The EPA's proposed revisions highlight that refrigerant regulations continue to evolve. Our value is helping you comply with current requirements while keeping you informed about what's coming next, enabling proactive rather than reactive approaches.  Ready to ensure your facility's EPA refrigerant compliance? Schedule a consultation with our air quality specialists today.  Kristine Davies Project Director, Air Quality Christoff Orr Project Manager, Air Quality