Alliance delivers environmental compliance services, on-site testing, and laboratory analysis for air, water, soil, and waste. Serving oil & gas, power gen, data centers, and more. Get started today. We are different. While others expect you to adapt to them, we adapt our approach and service delivery to you. We are built from the ground up with a single focus—to provide our clients with compelling responses to their environmental and compliance challenges. We take an innovative, technology-first approach to helping you solve your business problems while minimizing your impact on the environment. Commitment to getting it right. When “good enough” just isn’t enough, turn to us. We build accuracy, precision, and quality into everything we do. Fast and adaptive approach. We design our project teams around your precise goals, quickly deploying the right experts and equipment to meet your needs. Dedicated and experienced experts. Our engineers, scientists, and compliance professionals are creative problem solvers with a total focus on your goals. Technology-powered insight. We help you unify and integrate your initiatives by connecting many sites and data streams into a single easy-to-manage, technology-enabled portfolio. Markets we serve. We support leading companies and brands across a wide range of markets. We understand the special challenges of each sector and have the experience, approach, and capabilities to make a difference. Building & Construction Chemical & Processing Data Centers Energy & Power Environmental & Waste Management Food & Consumer Goods Government & Institutions Manufacturing & Production Oil & Gas Pulp & Paper Renewable Natural Gas (RNG) Semiconductors MARKETS & INDUSTRIES We are problem solvers. Get solutions for your most important and complex compliance challenges. From on-site assessments and monitoring to laboratory analyses for air, water, soil, and waste—Alliance can help you do it better. Environmental Compliance Build your winning regulatory strategy with help from our consultants and compliance experts—who bring the knowledge, insight, and proven industry experience to ensure your success. On-site Testing & Monitoring Expect reliable, on-time results without slowing down operations. For all your testing needs, we have the experienced teams and industry-leading technology to take it on. Laboratory Testing & Analysis Access a world-class lab network that combines broad reach with unmatched responsiveness. From sample collection to analysis, our technicians deliver precision and insight. OUR SERVICES Environmental compliance shouldn’t be an endless costly challenge. We help clients take back control. It starts with a fresh approach. Alliance is a new kind of environmental services company—powered by innovation, focused on service, and committed to client success. ABOUT US

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Expert environmental consulting services for air, water & natural resources. Regulatory compliance, permitting & risk assessment from Alliance Technical Group. Services / Environmental Compliance / Environmental Consulting Environmental Consulting Environmental consulting built for compliance. 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 National Ambient Air Quality Standards (NAAQS) impact evaluations and state toxics screenings, with proficiency in various air dispersion models such as SCREEN3, Industrial Source Complex Short-Term Model Version 3 (ISCST3), American Meteorological Society/Environmental Protection Agency Regulatory Model Screening Tool (AERSCREEN), and American Meteorological Society/Environmental Protection Agency Regulatory Model (AERMOD). Reporting Building on a significant track record of hundreds of successful environmental compliance reports for industrial and municipal facilities across the U.S., Alliance also provides the detailed, internal documentation required to obtain responsible official certification. Geospatial Measuring of Air Pollutants( GMAP) 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 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 Discharge Monitoring Report (DMR) preparation). We also provide support associated with Whole Effluent Toxicity including Clean Water Act Toxics management strategies. Hydrological & Hydraulic Studies Assisting you with TMDL, waste load allocation development, and flow analysis. Our specialties include water quality modeling, 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. Stormwater Management Assisting industrial, construction, and municipal clients achieve cost-effective compliance with local, state, and federal stormwater discharge regulations. Also provide support with services associated with soil stabilization and erosion control. Natural Resources Services 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 Our scientists, toxicologists, and engineers support industrial clients evaluating contaminants in groundwater, soil, sediment, surface water, and air, including heavy metals, petroleum compounds, VOCs, and other industrial 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 Geographic Information System (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.” 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

Markets / Oil & Gas Serving the Upstream, Midstream, & Downstream Oil & Gas Industry Upstream, midstream, and downstream operators face growing regulatory complexity, methane reduction pressure, workforce shortages, and increasing expectations for consistent, accurate emissions data across widespread assets. They must manage compliance without disrupting production, coordinate multiple vendors, and maintain reliability during tight maintenance windows - all while navigating evolving ESG and state and federal rules. Alliance solves these challenges by providing a single, scalable partner for consulting, engine testing, LDAR, laboratory analysis, and centralized reporting, backed by rapid mobilization and deep regulatory expertise. Through this integrated approach, Alliance has built a center of excellence that helps upstream, midstream, and downstream clients stay compliant, stay operational, and stay ahead of emerging requirements. Our end-to-end environmental services combine consulting, engine testing, OGI, LDAR, laboratory analysis, and mobile air monitoring, all delivered by the industry’s most experienced practitioners. The outcome is better data, stronger decisions, and sustained operational performance across your entire network. Step-by-Step Service Capabilities and Technical Processes Environmental Consulting & Program Design Gap assessments to identify priorities across upstream, midstream, and downstream operations. Program design defining LDAR scope, OGI frequencies, fenceline strategies, & engine testing aligned with maintenance & production. Modern data workflows using SkyBridge for GPS-verified inspections, real-time syncing, & automated reporting. Mobile air monitoring with GMAP for rapid source screening & geospatial mapping of BTEX, VOCs, & SO2. Engine, Turbine, & Generator Testing Asset inventories & readiness planning to minimize operational disruption. Performance testing of combustion efficiency, load, & emissions to support proactive maintenance. Defensible results with integrated dashboards for clearer operational decisions. Compliance support ensuring testing methods, documentation, & results align with regulatory & permit requirements. Alliance provides complete, end-to-end engine, turbine & generator compliance management , including testing, reporting, scheduling, & regulatory communication. Laboratory Testing & Analysis Custody transfer verification with precise analysis & defensible documentation. GHG and hydrocarbon analysis for gases, liquids, NGLs, crude, condensate, & produced water. Air, soil, & water testing with fast turnaround & broad accreditations for operational & long-term support. Quality assurance & method validation to ensure consistent, defensible results across all sample types & testing workflows. Fugitive Emissions Testing & Monitoring OGI execution with drone support and SkyBridge for instant media capture; supports Appendix K & AWP. Method 21 measurements to verify leak status & repair priorities. Comprehensive LDAR management including tagging, inventory, BWON/HRVOC support, turnaround coordination, & QA/QC. Tracer gas testing with helium to detect ultra-small leaks & reduce safety and product-loss risks. CEMS provides full-service integration, rapid deployments, & QA/QC + RATA support. Regulatory coverage spanning federal and state rules, including 40 CFR Subparts XX, XXa, BBBBBB, & R, plus California's SCAQMD 1173, 1178, 462, 463; SJVAPCD 4623, 4624; SBCAPCD Rule 331; & VCAPCD 74.10. Stack Testing Compliance demonstration testing on a loading or concentration basis, covering PM, metals, acid gases, combustion gases, VOCs & SVOCs, dioxins & furans, & other regulated pollutants across control systems including baghouses, scrubbers, SCR, & oxidizers. Engineering & investigative test programs to evaluate control device performance & identify compliance risks ahead of formal testing. Performance specification testing (RATA) & CEMS evaluations under Part 60, 63, & 75, including Precision Flow RATA testing for faster, more representative results. Specialty testing capabilities including on-site FTIR spectroscopy, low-level PM sampling, PFAS sampling, & international stack testing programs. Data Acquisition & LDAR Software StackVision DAS with user-configurable calculations, alarms, & reporting, trusted by more than 3,100 emission sources across upstream, midstream, & downstream facilities. Prism DAS for facilities that need a scalable, flexible alternative to StackVision, built on the same 8864 Data Controller hardware platform. 8864 Data Controller hardware bridging analyzer signals & DAS software, delivering real-time calculations & validated data for compliance reporting. SkyBridge LDAR software for real-time field data capture, supporting Method 21, OGI, & mixed-mode AWP monitoring programs. DASProtect service program covering regulatory & reporting support, engineering services, IT services, & training for DAS customers. REQUEST INFORMATION

Markets / Power & Energy Serving the Power Generation & Energy Industry Today’s power generators face a shifting compliance landscape marked by aging infrastructure, rising emissions expectations, and increasing demand for accurate, defensible environmental data. These challenges can strain internal teams and expose operators to unnecessary operational and regulatory risk. Alliance partners with power clients to deliver dependable emissions testing, continuous monitoring expertise, and strategic compliance guidance that strengthens reliability, simplifies reporting, and helps facilities meet the highest regulatory standards. Our end-to-end services integrate industry-leading DAS technology, full lifecycle CEMS support, emergency temporary monitoring, and expert compliance and reporting services, all delivered by the industry’s most experienced practitioners. The outcome is maximized system uptime, defensible emissions data, and sustained compliance performance across your entire facility network. Step-by-Step Service Capabilities and Technical Processes Industry-Leading Data Acquisition System StackVision DAS implementation with custom configuration to facility requirements and user-friendly, no-programming interface. Real-time compliance visibility through customizable dashboards, color-coded alarms, and fleetwide monitoring from a centralized location. Automated data management for corrections, built-in QA/QC tools for linearity, RATA, and audit management. Streamlined compliance reporting with pre-configured Part 60/63/75 reports, direct XML/JSON generation for ECMPS/CEDRI, and automated distribution. Continuous Emissions Monitoring Systems (CEMS) Custom system design & turnkey installation with inhouse engineered equipment, racks, and shelters for demanding EPA applications. Comprehensive parts inventory from leading manufacturers to minimize downtime. Preventive maintenance programs with customized plans, predictive maintenance approach, and QA auditing/RATA performance testing. Training & knowledge transfer providing hands-on expertise in construction, installation, troubleshooting, and repair to build internal capability. Temporary CEMS Solutions Rapid emergency response with national footprint enabling accelerated deployment during unplanned outages. Custom mobile monitoring using trailer-based systems with advanced capabilities (dual source, GC, FTIR) or compact cabinet units for hazardous areas. Comprehensive parameter coverage for criteria pollutants (NOx, CO, SO2, VOCs, THC, flow) on boilers, furnaces, FCCUs, SRUs, plus specialty monitoring for H2S, total sulfurs, HRVOCs, and net heating value. Seamless data integration with analog current loops, Modbus TCP/IP/RS232, and real-time digital I/O compatible with existing facility systems. Compliance & Reporting Services Expert regulatory guidance with proactive compliance monitoring, supporting initial applicability determinations keeping facilities informed of pending and new regulations. Proactive weekly and monthly data reviews to identify issues early, validate data quality, and prevent potential violations and costly fines. Seamless regulatory report generation covering Part 75 EDRs, Part 60 state/permit reporting, and CEDRI submission support. Monitoring plan updates and QA/QC plan development aligned with Part 75 and permit requirements. Integrated environmental compliance services supporting permitting, monitoring, testing, LDAR, modeling, and onsite compliance execution through one Alliance team. Stack Testing Services Compliance demonstration testing , including particulate matter, metals (including mercury), acid gases, combustion gases, organics, and formaldehyde. Performance specification testing (RATA) supporting Part 60, Part 63, and Part 75 CEMS certification, recertification, and audit readiness. Air pollution control device evaluations supporting emissions compliance, performance verification, and regulatory testing requirements. Engineering and investigative test programs , including low-level PM and specialty testing, to support unit changes, troubleshooting, fuel transitions, and compliance planning. Laboratory Testing & Analysis Precise measurement of air quality samples for pollutants and hazardous gases including Cr6+, Hg, Metal HAPS, Acid Gases, and complex organics. National laboratory network with broad state, federal, and TNI accreditations, delivering fast turnaround and consistent results aligned with regulatory requirements. Volatile and semi-volatile organic analysis using EPA-approved methods to support emissions testing, permitting, and environmental compliance. Quality assurance & method validation to ensure consistent, defensible results across all sample types & testing workflows. REQUEST INFORMATION

Markets / Data Centers Serving the Data Center Industry Data centers face increasing pressure to deliver reliable, 24-7 computing power while navigating environmental regulations, power generation requirements, and sustainability commitments. Managing large fleets of backup generators, on-site power infrastructure, air permitting, and environmental compliance can create significant operational and regulatory challenges. Alliance helps data center operators address these complexities by providing end-to-end environmental solutions - from air permitting to generator stack testing, emissions monitoring systems (CEMS/DAS), and environmental laboratory services. With deep technical expertise and nationwide coverage, Alliance helps ensure data centers maintain operational reliability, meet regulatory obligations, and scale their infrastructure with confidence. One partner for every environmental compliance need across your data center portfolio. From backup power testing to air permitting, water compliance, and continuous monitoring. Alliance is the largest Engine Testing, Stack, CEMS, and LDAR Service Provider in North America. Service Capabilities and Technical Processes Engine, Turbine & Generator Testing State and federal compliance testing for backup diesel generators, natural gas engines, and combustion turbines Data center-specific expertise with fleets ranging from dozens to hundreds of units Custom stack extensions and engineering solutions for generators with limited access Flexible scheduling coordinated around maintenance windows and operational constraints Defensible results with integrated dashboards and electronic CEDRI reporting Stack Testing & Source Emissions Compliance demonstration testing for NOx, CO, PM, VOCs, & HAPs Engineering and investigative test programs On-site FTIR spectroscopy and specialty testing Low-level PM sampling for facilities near attainment thresholds Performance specification testing (RATA) for continuous monitors Air dispersion modeling support for permitting CEMS & Temporary CEMS Turnkey CEMS integration for on-site power generation and micro-grid facilities Installation, commissioning, and training DAS (Data Acquisition System) solutions for real-time emissions data management QA/QC audits and ongoing maintenance programs RATA testing and certification Rapid deployment capability for emergency or interim monitoring needs Laboratory Testing & Analysis Water testing for cooling system discharge, stormwater, and NPDES compliance Wastewater characterization for pretreatment and POTW discharge requirements Air and source emissions analysis : Cr6+, Hg, Metal HAPs, acid gases PFAS testing and analysis for emerging contaminant requirements Soil and waste characterization including TCLP for hazardous determination Fast turnaround from a national network of accredited laboratories Environmental Consulting Air permitting strategy and compliance for data center construction and operations Title V and minor NSR permitting support Regulatory guidance across federal and state frameworks (NSPS, NESHAP, CAA) EHS compliance as a service and on-site personnel augmentation Risk assessments and mitigation planning Additional Capabilities LDAR (Leak Detection & Repair) for fuel systems and refrigerant management Ambient air monitoring and fenceline monitoring SkyBridge cloud platform for real-time field data and automated reporting Stormwater management and NPDES permitting support Health and safety consulting and training REQUEST INFORMATION

Generator testing, Temp CEMS, CEMS/DAS, RATA and air permitting support scheduled around your data center commissioning timeline. Get a testing plan for your site.

Environmental services for 11+ industries: oil & gas, manufacturing, energy, chemical processing, semiconductors & more. Tailored solutions by sector. We support leading companies and brands across a wide range of industries. Markets we serve. With profound understanding of your space and operation, we are committed to delivering high-quality, specialized insight and support, provided by experts. We understand the special challenges of each sector and have the experience, approach, and capabilities to make a difference in a wide range of industries. Building & Construction Chemical & Processing Data Centers Energy & Power Environmental & Waste Management Food & Consumer Goods Government & Institutions Manufacturing & Production Oil & Gas Pulp & Paper Renewable Natural Gas (RNG) Semiconductors REQUEST INFORMATION Learn more. Find out how we can support your business with our range of services. With expertise in a variety of end markets, Alliance is focused on People, Process, and Technology to provide unparalleled response and service to assist clients with meeting their air compliance and risk reduction goals.

Comprehensive solutions for continuous emissions monitoring and compliance. Manage all your leak detection needs with Alliance today. Services / On-Site Testing & Monitoring / Source Testing Renewable Natural Gas Quantify emissions at the source. Accurate, defensible source testing data that’s measured, analyzed, and reported reliably every time. Our skilled professionals consistently and rapidly deliver that first-class quality service which translates directly into our high client retention and satisfaction rates. Services & Solutions Source Testing Stack | CEMS/Temp CEMS | Engine Testing | RNG Stack Testing Committed to your specific stack testing needs—Alliance’s combination of innovation, technology, and reliability is anchored by a seasoned team of scientists, QSTI-certified professionals, and tenured stack testing managers driving your projects to successful completion. Compliance Demonstration | Engineering/Investigative Test Programs | On-Site FTIR Spectroscopy | Specialty Testing | Low Level PM Sampling | Performance Specification Testing (RATA) Stack Service Details CEMS (Continuous Emissions Monitoring System Services) Reduce your downtime risk with CEMS tailored to your local needs and count on our extensive spare parts stock for fast service on your specific brand of equipment. Let our North American CEMS and dedicated Temp CEMS services be the cornerstone of your environmental compliance and operational success. Turnkey CEMS Integration | Temp CEMS | Installations | Commissioning | Training Equipment Upgrades | Maintenance | QA/QC Audits | RATA CEMS Service Details Engine Testing Boost efficiency and safety for your combustion source program with our expert advice and mobile solutions.  Our engine testing platform is designed to gauge performance in real-time, which helps you manage your operations and compliance status more efficiently. Flexible Scheduling & Mobility | Fast Response | Reduces Risks It’s a smart move to protect your operations from risks, extend the life of your engines, and get an edge in the market. RNG (Renewable Natural Gas Services) As the demand for renewable natural gas grows, so do the challenges associated with meeting the rigorous pipeline quality standards. These low-level requirements provide no room for sampling or analytical error. We have the expertise and advanced equipment to ensure accuracy, every time. Sampling | Analysis | Reporting | Compliance | Batch Pathway Testing | Product Transfer Documents | Third Party Audits | Investigative Consulting/Engineering Let Alliance’s experienced technicians simplify the sampling, analysis, and reporting procedures for you. Using advanced equipment and analytical capabilities, we manage every step of the RNG testing process. REQUEST INFORMATION Learn more about Source Testing. Back to All Services

Comprehensive source testing services including stack testing, CEMS, engine testing & specialty emissions testing. Industry-leading accuracy & compliance. Services / On-Site Testing & Monitoring / Source Testing Source Testing Quantify emissions at the source. Accurate, defensible source testing data that’s measured, analyzed, and reported reliably every time. Our skilled professionals consistently and rapidly deliver that first-class quality service which translates directly into our high client retention and satisfaction rates. Resource-ready. A wide North American footprint and consistent investment in state-of-the-art equipment positions our dedicated teams of skilled specialists to respond efficiently to each client’s source testing needs. Trustworthy expertise. The multi-disciplinary expertise of our staff ensures our clients receive full-service guidance on regulatory compliance, industrial processes, source emissions testing, monitoring, and analysis. Actionable insights. Accurate, quality-controlled emissions data enables clients to make real time data-driven decisions—and our dedicated Technical Services team ensures test results are accurately reported to regulatory authorities. Services & Solutions Source Testing Stack | CEMS/Temp CEMS | Engine Testing | RNG Stack Testing Committed to your specific stack testing needs—Alliance’s combination of innovation, technology, and reliability is anchored by a seasoned team of scientists, QSTI-certified professionals, and tenured stack testing managers driving your projects to successful completion. Compliance Demonstration | Engineering/Investigative Test Programs | On-Site FTIR Spectroscopy | Specialty Testing | Low Level PM Sampling | Performance Specification Testing (RATA) Stack Service Details CEMS (Continuous Emissions Monitoring System Services) Reduce your downtime risk with CEMS tailored to your local needs and count on our extensive spare parts stock for fast service on your specific brand of equipment. Let our North American CEMS and dedicated Temp CEMS services be the cornerstone of your environmental compliance and operational success. Turnkey CEMS Integration | Temp CEMS | Installations | Commissioning | Training Equipment Upgrades | Maintenance | QA/QC Audits | RATA CEMS Service Details Data Acquisition Systems Our Data Acquisition Systems (DAS) give facilities across the U.S. the tools to collect, validate, and report emissions data continuously — and to stay ahead of federal, state, and local regulatory requirements without the administrative burden. StackVision Software | Prism Software | 8864 Data Controllers | DAS Engineering | DAS IT & Security Services | Regulatory & Reporting | QA/QC | Data Management View Our DAS Software Options 8864 Data Controllers Every Alliance DAS — StackVision and Prism — works alongside the 8864 Data Controller, our industry-standard hardware platform. Acting as the link between your emissions monitoring rack and DAS software, the 8864 collects analog and digital analyzer signals, performs real-time calculations, and delivers validated data to your DAS for compliance reporting. Learn More About The 8864 Engine Testing Boost efficiency and safety for your combustion source program with our expert advice and mobile solutions.  Our engine testing platform is designed to gauge performance in real-time, which helps you manage your operations and compliance status more efficiently. Flexible Scheduling & Mobility | Fast Response | Reduces Risks It’s a smart move to protect your operations from risks, extend the life of your engines, and get an edge in the market. Engine Testing Details RNG (Renewable Natural Gas Services) As the demand for renewable natural gas grows, so do the challenges associated with meeting the rigorous pipeline quality standards. These low-level requirements provide no room for sampling or analytical error. We have the expertise and advanced equipment to ensure accuracy, every time. Sampling | Analysis | Reporting | Compliance | Batch Pathway Testing | Product Transfer Documents | Third Party Audits | Investigative Consulting/Engineering Let Alliance’s experienced technicians simplify the sampling, analysis, and reporting procedures for you. Using advanced equipment and analytical capabilities, we manage every step of the RNG testing process. RNG DETAILS Talk to an Expert “It’s our daily priority to put in the work to build a culture where Quality, Integrity and Consistency are the standard. Our clients benefit from that culture in the form of accurate, defensible test data provided by skilled professionals.” Ryan O’Dea Senior Vice President, Stack Testing Learn more about Source Testing. Back to All Services

Meet all your environmental lab testing and analysis needs seamlessly with our full-service laboratory with 50+ years of expertise in Greenville & Columbia, SC. Services / Lab Testing & Analysis / Environmental Labs / Greenville & Columbia Environmental Lab Greenville & Columbia Environmental Lab REQUEST INFORMATION About Alliance Technical Group - Greenville is a full-service environmental testing laboratory offering comprehensive analytical services for organic, inorganic, and general chemistry analyses across soil, water, and waste metrices. Founded in 1969, our laboratory combines 50+ years of expertise with state-of-the-art instrumentation and automation to deliver accurate, timely results that meet the most stringent regulatory requirements. Our Greenville lab serves upstate South Carolina, western North Carolina, and northeastern Georgia with sampling and analytical services. Our Columbia office covers the Midlands and Lowcountry, supported by a daily courier between the two locations to ensure timely sample delivery. Greenville: 803-509-8999 Columbia: 864-232-1556 Core Capabilities Organic Analysis Volatile Organic Compounds (VOCs) - EPA 8260/624/524 Semi-Volatile Organic Compounds (SVOCs) - EPA 8270/625 Organochlorine Pesticides - EPA 8081/608 Polychlorinated Biophenyls (PCBs) - EPA 8082/608 Chlorinated Herbicides - EPA 8151 Haloacetic Acids - EPA 552 Inorganic Analysis TAL Metals (23 metals) - ICP-AES/ICP-MS RCRA-8 Metals - Priority Pollutant Metals Cation-Exchange Capacity Hexavalent Chromium - SM 3500/EPA 7196 Mercury - EPA 7470/7471/245.1 TCLP Extraction - EPA 1311 Microbiology Total coliforms/e. Coli Fecal coliforms in water and sludges Heterotrophic Plate Count Legionella General Chemistry Anions (Full Scan) - EPA 300.0 Total Organic Carbon (TOC) - SM 5310C/EPA 9060A Biological/Chemical Oxygen Demand (BOD/COD) Total Suspended/Dissolved Solids (TSS/TDS/VSS) Nutrients (Ammonia, TKN, Phosphorus, Nitrate/Nitrite) Cyanide, Sulfide, Phenolics Surfactants (MBAS/CTAS) Oil & Grease (HEM) - EPA 1664 pH, Alkalinity, Hardness, Conductivity, Turbidity Network Lab Services Specialized analyses including PFAS, dioxin, and radiological testing available through our Akron facility. Certifications & Accreditations View Accreditations & Certifications State Certifications South Carolina (23105, 40572) Georgia (880) North Carolina (45710) NELAC Utah (SC00004) Accreditations NELAC SC DES NC DEQ, DHHS GA DNR Sample Information Sample Receiving Hours Greenville: Monday-Friday, 7:30 AM - 5:30 PM Columbia: Monday-Friday, 8:00 AM - 5:00 PM Turnaround Times Standard: 10 business days from receipt Expedited options available: Next Day (micro only) 2 Day 5 Day *Expedited TAT should be coordinated in advance Sample Pickup & Delivery Courier service for sample pickup & supply delivery Service radius: typically, 150-mile radius from lab Courier fees may apply - contact lab for details Containers & Supplies Pre-labeled sampling containers provided Chain-of-custody forms and coolers available Encore samplers and methanol kits upon request Contact lab for specific container requirements, holding times, and preservatives Reporting & Data Deliverables Hardcopy Formats Standard Format (Results Only) EPA Level I-II Data Management Web portal access for real-time project status 5-year data archival and retrieval services Electronic Data Deliverables (EDD) Excel/ASCII formats RIS/EQuIS Client-customized formats Value-Added Services Field Services SC DES Certified field technicians Ground/surface water sampling Soil/waste pile sampling and compositing Potable water and NPDES sampling Field parameter measurements (pH, temperature, conductivity, dissolved oxygen, residual chlorine) Project Management Dedicated project managers for centralized communication Expedited turnaround coordination Technical consultations and QA/QC support Industries Served - Environmental Consulting - Government Agencies - Engineering Firms - Manufacturing - Utilities - Remediation Contractors - Real Estate/Property - Industrial Facilities - Legal/Litigation Support Greenville & Columbia Laboratory Get the Best of Both Worlds. Together. One National Network. ALL Your Lab Needs. Reach an experienced lab advisor today for help at your site. First name Last name* Phone* Email* How can we help?* Talk to an Expert map Back to All Services

Launching IP CEMS: A New Era in Part 75 Compliance The U.S. EPA Greenlights ESC Spectrum's (An Alliance Technical Group Company) New Integrated Path CEMS (IP CEMS) Technology for Air Emissions Compliance We have successfully demonstrated Integrated Path CEMS (also called optical in-situ monitoring) for air emissions compliance monitoring. The EPA agrees that the ESC Spectrum IP CEMS, as designed, meets the requirements of 40 CFR Part 75 and can now be provided as an option for our customers. Learn more in our press release below. Learn More "It’s an exciting time to be in the emissions compliance industry. We are proud to be at the forefront of innovative new technology to potentially reduce CEM system costs while improving measurement accuracy." Jeff Rabensteine Executive Vice President The Benefits of IP CEMS Technology More representative measurements can be made by using integrated path technology, eliminating sample transport and potential measurement biases, and providing a faster response time. Cost savings due to reduced calibration gas consumption and labor costs, less power usage, fewer emergency repairs, and spare parts for maintenance. Contact Us Below to Learn More! Want to know if IP CEMS is the right fit for you? Let’s chat! Our experts are happy to discuss your options and find the best solution for your needs. 256.351.0121 info@alliancetg.com 255 Grant St. SE Ste 600 Decatur, AL 35601 Copyright 2025 © Alliance Technical Group ABOUT SERVICES MARKETS NEWS CAREERS CONTACT PRIVACY POLICY Stay connected with Alliance.

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Founded in 2000, Alliance Technical Group has grown from a small Alabama stack testing company to North America's leading environmental services provider with 2,200 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 2300+ Dedicated Employees 80+ Locations in the US and Canada 150+ 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 2025-2026 Element One Labs Mid Continent Testing Labs Earth Analytical Sciences Global Analyzer Systems ESC Spectrum Environmental 360 Slipstream Environmental Services Protocol2 Air Sciences Inc. Grace Consulting, Inc. Emissions Testing 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 60 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 Chris LeMay Chief Executive Officer Kim Van Soelen Chief Commercial Officer Jim Herr Chief Administrative Officer Premal Vora Chief Strategy Officer

Professional engine emissions testing services for stationary engines, generators & compressors. Regulatory compliance testing from Alliance Technical Group. Services / On-Site Testing / Source Testing / Engine Testing Engine Testing Precision Engine Testing for Regulatory Compliance and Performance Assurance Ensure your engines meet EPA and state regulatory standards with expert testing, accurate emissions data, and trusted field-to-lab capabilities. Engine Testing Services Engines | Turbines | Enclosed Combustors | Heaters | Generators Tests Conducted NSPS JJJJ NESHAP ZZZZ NSPS KKKK NSPS OOOOb TAC 106.512 TAC 117 TAC NRSP NMED Periodic WY Portable Analyzer CO Portable Analyzer Green House Gases Methane Permit Specific Spot Checking Research and Development Data Centers Renewable Energy Sources Test Methods EPA Reference Methods 1, 2, 3A, 4, 5, 7E, 10, 19, 25A 320 ASTM D6348 & ASTM D6522 GPA 2261 State of Colorado Portable Analyzer Monitoring Protocol State of Wyoming Air Quality Division Portable Analyzer Monitoring Protocol WY DEQ Division of Air Quality FTIR Stack Testing Guidance Test Process Emissions Testing Compliance Strategy and Planning Creation and Submittal of Pre-Test Notifications Design of Custom Test Protocols FTIR Data Validation On-Site, Real-Time Results Electronic Report Hosting and 24/7 Portal Access ISNetworld, Veriforce and TPS Alert Compliant 6-3-1 Process Our keystone service offering — this process describes the weekly cadence of pre-testing communication during which we coordinate details, conduct research, and prepare protocols to ensure a successful testing experience. Learn More About the 6-3-1 Process Here's the rundown on our proven pre- to post-testing process that involves precise coordination and communication to ensure the best testing results. From start to finish, we stay in constant communication. Learn what happens at the major milestone stages of 6 weeks, 3 weeks and 1 week prior to testing. The 6-3-1 Process 6 Weeks Prior: Preparation Alliance will email test week details to pertinent parties to request information that is unknown and address questions about permit research that has been completed. We hold ourselves accountable to every last detail, because every detail matters. The following week we will prepare any testing notifications or protocols required by the regulatory agency(s) and continue our communication with pertinent parties. Expect our background work and 1:1 communications to continue until mid-way through the process when we will begin sharing details on how testing will be conducted. 3 Weeks Prior: Verification Successful stack testing takes a team approach. Getting the right information to the right people at the right time is our strength. Communicating what’s needed upfront saves time, improves quality and builds camaraderie, ensuring all parties feel connected and informed. At this stage, the full plan begins to come together - from the big picture to the small details. No guesses, no assumptions. We validate the facts and communicate them to ensure everyone involved understands exactly what’s needed, because no two stack tests are the same. 1 Week Prior: Confirmation One week prior to testing day, the Alliance Testing Technician will communicate directly with the customer site contact to confirm the meetup and kickoff schedule for the onsite testing. Additional emails with test week details will be sent to all pertinent parties to ensure there are no surprises. And, if there is a need to adjust to new information or emergent insights, we will adapt accordingly, keeping everyone informed along the way. OGI (Optical Gas Imaging) Alliance Technical Group offers industry-leading OGI services backed by a seasoned team, robust data systems, and a commitment to quality. Whether you operate upstream, midstream, or downstream, our nationwide team delivers high-performance leak detection where and when it matters most. OGI is a flexible solution ideal for diverse industrial sectors and applications: Upstream: well pads, offshore rigs, crude storage Midstream: pipelines, gas terminals, compressor stations Downstream: refineries, above-ground storage tanks Other Sectors: gas utilities, biogas plants, landfills, mining, semiconductor manufacturing OGI is also effective for detecting emissions from compressor rod packing systems, which are a common source of methane leaks in reciprocating engines. By visualizing and pinpointing these leaks in real time, operators can take corrective action before emissions exceed regulatory thresholds or impact equipment performance. Learn More About Our OGI Services Oil & Gas Labs Alliance delivers fast, flexible testing and analysis solutions for the oil and gas industry. We provide comprehensive sampling and analytical services across every stage of energy extraction, transportation, and product delivery. From field collection to advanced laboratory testing, our team ensures accurate, on-time results you can rely on. Learn More About Our Lab Services VIEW OUR ACCREDITATIONS “At Alliance, we pride ourselves on being the largest engine testing company in the U.S., backed by the most expansive network of mobile laboratories. Our deep bench of subject matter experts ensures unparalleled expertise in every project. Through advanced software and a full suite of services—including labs, consulting, LDAR, and OGI—we streamline testing and support the evolving needs of the Oil & Gas industry.” Mike O'Brien Vice President, Oil & Gas First name* Last name* Phone* Email* How can we help?* Talk to an Expert Learn more about Engine Testing Back to All Services

Renewable Natural Gas (RNG) testing & compliance services. Specialized testing for biogas facilities, landfills & anaerobic digesters from Alliance. Services / On-Site Testing / Source Testing / RNG (Renewable Natural Gas) Renewable Natural Gas (RNG) Services Precision Testing. Personalized Support. Pipeline-Ready Results. Renewable Natural Gas—also known as RNG, biomethane, or biogas—is a clean, sustainable energy solution with growing impact. As solid waste, wastewater, and agricultural operations embrace this fuel of the future, ensuring safe, compliant pipeline entry has never been more critical—or more complex. End-to-End RNG Testing & Compliance Services From the first sample to final reporting, Alliance simplifies RNG compliance with full-scope support in the United States and Canada. Sampling & Field Services Specialized services for water and hydrocarbon dewpoint, moisture content, and custom site needs. Skilled scientists handle your sampling, and often in as little as 1–2 days. Laboratory Testing & Analysis Our certified labs perform high-precision analysis for: H₂S Siloxanes CO₂/O₂ Ammonia Mercury VOCs Pesticides/PCBs Volatile Metals Biologicals Carbon-14 Moisture/Dewpoint Particulate and Compressor oil Regulatory & Compliance Support Air Permitting NSPS & NESHAP Greenhouse Gas (GHG) Reporting NPDES SPCC Pathway Registration (40 CFR Part 80) OSHA (confined space, hazardous materials, PPE, and process safety) Waste Management Batch Pathway Testing Product Transfer Documents (PTDs) Third-party audit coordination North American Consulting & Planning Get dedicated, experienced help from RNG scientists and engineers to determine if your facility needs comprehensive baseline testing or a less intensive path to meet quality and cost goals. We build and manage your sampling calendar to keep everything on track. The Alliance Difference Widespread Coverage, Reliable Results Rely on the powerful Alliance network for national sampling and lab capabilities, rapid turnaround and precision. Compliance Peace of Mind Our team is fluent in the requirements of interconnect agreements, EPA pathways, and emerging policies. We help de-risk your testing process and streamline your path to certification. Tailored Testing Solutions Every RNG site is different. We build the process around your feedback, your infrastructure, and your goals. Superior Client Service Clients work directly with expert scientists, engineers, and experienced RNG consultants who take time to explain the science and the strategy behind every result. Supporting Every RNG Pathway Alliance supports RNG testing and compliance at every stage of development: Landfill Gas Projects Wastewater Treatment RNG Dairies and Agricultural Digesters Food Waste-to-Energy Facilities Pipeline Interconnect Commissioning Whether you’re just starting site feasibility or operating a full-scale production facility, we’ll help you minimize risk, maximize uptime, and meet even the most rigid pipeline quality standards. RNG Testing—Challenge Accepted RNG sampling and analysis can be complex. Alliance makes it clear, fast, and reliable—so you can focus on producing clean, profitable energy. VIEW OUR ACCREDITATIONS “No two RNG projects are the same. That’s why we deliver customized testing solutions, clear results, and trusted guidance—every step of the way.” Shane Lee RNG Program Manager Contact an RNG Advisor First name* Last name* Phone* Email* How can we help?* Talk to an Expert Read More About RNG with Alliance Back to All Services