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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.

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

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

Advanced optical gas imaging (OGI) services for leak detection. Real-time monitoring, regulatory compliance & improved operational safety solutions. Services / On-Site Testing / Fugitive Emissions / Optical Gas Imaging Optical Gas Imaging (OGI) See the Unseen Using Optical Precision OGI cameras are engineered to rapidly detect leaks with high-resolution imaging, enabling the visual identification of even the smallest gas leaks across many hundreds of components. EXPERIENCE Our certified OGI technicians, including licensed drone pilots and seasoned leaders, bring deep expertise and widespread coverage across the U.S. and Canada, with extensive field experience in optical gas imaging. EQUIPMENT We deploy a robust inventory of OGI cameras, drone-camera systems, and portable Method 21 VOC analyzers—supported by our cloud-based platform for efficient data reporting and management via web and mobile. PROJECTS & CLIENTS As a trusted LDAR partner, we serve oil and gas companies throughout North America, delivering proven results across a wide range of projects involving well pads, tanks, and pipeline infrastructure. OGI Services Optical Gas Imaging (OGI) is a game-changing technology that enables the visual detection of gas leaks in real time—quickly, safely, and with unparalleled accuracy. By identifying fugitive emissions at the source, OGI enhances operational safety, reduces environmental impact, and lowers compliance costs for industrial facilities. 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. Applications 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 Engine Testing Services What are the benefits of having an OGI camera program? Reduce product loss Increases safety for workers and operators Decreases hazardous exposure for the surrounding community Reduces or eliminates potential fees and fines Regulatory Coverage Our services are fully aligned with federal and state requirements, including: Subparts OOOOa, OOOOb, OOOOc Subpart W 40 CFR Part 60, Appendix K Alternative Work Practice (AWP) Regional standards like Rules 1173 & 1178 SkyBridge OGI Software SkyBridge is our proprietary, cloud-based platform designed to streamline leak detection workflows. It enables: Real-time image capture and tagging Synchronized data entry across sites Secure mobile and web access Simplified reporting and regulatory documentation This all-in-one system eliminates manual processes and fragmented tools, giving clients a centralized, efficient solution for emissions management. See How SkyBridge OGI Works REQUEST INFORMATION VIEW OUR ACCREDITATIONS Back to All Services

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

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.

Meet all your environmental lab testing and analysis needs seamlessly with our full-service laboratory with several years of expertise in Akron, OH. Services / Lab Testing & Analysis / Oil & Gas / Midland Oil & Gas Lab Midland Oil & Gas Lab About Alliance Technical Group - Midland is an oil & gas testing laboratory offering comprehensive analytical services for crude oil, condensate, produced water, and gas matrices. Our laboratory combines expertise with state-of-the-art instrumentation and automation to deliver accurate, timely results that meet environmental and measurement needs. REQUEST INFORMATION 720-624-6986 Core Capabilities Oil/Condensate Obtaining Liquid Samples - GPA 2174 Extended NGL (C10+) – GPA 2186 NGL (C6+) – GPA 2177 Extended Oil (C36+) – GPA 2103M/2186M Flash Liberation Analysis – GPA 2122/CDPHE 17-01 Vapor Pressure – ASTM D6377/5191 Density (API Gravity) – ASTM D5002 Methanol in NGL – ASTM D7423 Gas to Oil Ratio (GOR) Bubble Point (ProMax) Gas Obtaining Gas Samples – GPA 2166 Routine Natural Gas (C6+) – GPA 2261 Extended Gas (C10+) – GPA 2286 Natural Gas (C6+, BTU) – ASTM D1945/46 Methanol in Gas – ASTM D7423 Produced Water Flash Liberation Analysis Extended Flash Gas – GPA 2286 Gas to Water Ratio (GWR) Sample Information Sample Receiving Hours: Monday-Friday, 8:00 AM - 5:00 PM After-hours delivery available by appointment Samples received after 4:00 PM begin TAT next business day at 8:00 AM Turnaround Times Standard: 7-10 business days from receipt Expedited options available:* Same Day Next Day 2 Days 3 Days *Expedited TAT should be coordinated in advance Reporting & Data Deliverables Excel/PDF/Portal Standard Format Web Portal Other Client Formats Project Management Dedicated project managers for central communication Project “kick-off” meetings 24/7 laboratory operation capability Expedited turnaround coordination Technical consultations and QA/QC support Industries Served - Environmental Consulting - Engineering Firms - Government Agencies - Oil & Gas Midland 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

Specialized environmental services for oil & gas industry. Stack testing, LDAR, compliance consulting & laboratory analysis tailored for energy sector. Services / Lab Testing & Analysis / Oil & Gas Oil & Gas Fast and flexible oil and gas testing and analysis. Providing comprehensive sampling and analysis services across all stages of energy extraction, transportation, and product delivery. From field collection to specialized laboratory testing, we ensure on-time and reliable results. Trust our solutions. Our experienced team conducts both on-site analysis and detailed in-house laboratory testing, offering tailored solutions for your specific needs. Test any material. Our capabilities include natural gas and biogas, landfill gas and refinery gases, pressurized crude oil, sales oil, produced water, and more. Meet all requirements. We offer field services to collect complex permit-required samples, site-specific emission factors, product validation samples, custody transfers, and many other applications. Services & Solutions Accurate Custody Transfers Precise analysis during pipeline custody transfers enhances transfer value and secures accurate and reliable data that fortifies transactional trust. Capabilities Full-lifecycle Sampling & Analyses Greenhouse Gas Analysis Renewable Natural Gas & Biogas Natural Gas Refinery Gases Pressurized NGL (Y-Grade, E-P Mix) Pressurized Condensate Pressurized Crude Oil Pressurized Produced Water Sales Oil Extended Gas Extended Liquid Flash Liberation Field Services Permit-Required Sample Collection Product Validation Sample Collection External Lab Access for Specialized Analyses REQUEST INFORMATION Oil & Gas Lab Locations Meet all your oil & gas lab testing and analysis needs seamlessly by using advanced Alliance labs around the country with local, regional, and federal testing requirement expertise: Bakersfield, CA Denver, CO Midland, TX Toronto, ON “Our standard turnaround time in the lab for most Oil & Gas analysis is less than 6 days, compared to an industry average of 15 days.” Jordan Laster Senior Vice President, Laboratory & Analytical Back to All Services

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

Alliance Technical Group provides Data Acquisition Systems for air emissions compliance. StackVision and Prism DAS solutions backed by 24/7 client support and in-house engineering. Services / On-Site Testing / Source Testing / Data Acquisition Systems (DAS) Data Acquisition Systems Built for compliance. Tailored for your team. Alliance’s 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. Reduce time spent managing data. Centralize data collection, validation, review, and reporting in a single system. Automated calculations and data handling reduce manual effort, minimize errors, and keep your records consistent and ready for audits. Built for your facility. Backed by decades of expertise. Designed from decades of air emissions compliance experience, each system is configured to your equipment, processes, and reporting workflows, not a one-size-fits-all setup. Continuous updates keep your system aligned with evolving regulatory requirements. 24/7/365 Dedicated Expert Support Get direct access to a U.S.-based team of 15+ DAS specialists, available 24/7/365 to support your system, troubleshoot issues, and help maintain reliable compliance operations. Our DAS Products StackVision™ The most widely used DAS in the U.S., trusted by more than 3,100 air emission sources. StackVision is user-configurable — not a black-box programmed solution — so your team can manage configurations, calculations, and alarms without writing a single line of code. Prism A scalable DAS solution purpose-built for facilities that need flexibility without complexity. Prism grows with your operation and integrates with the same 8864 Data Controller hardware platform. StackVision Details Hardware That Supports Your DAS The 8864 Data Controller Every Alliance DAS — StackVision and Prism — operates in tandem with the 8864 Data Controller, our industry-standard hardware platform. The 8864 is the physical bridge between your emissions monitoring rack and your DAS software: it collects analog and digital signals from your analyzers, performs real-time calculations, and passes validated data upstream to StackVision or Prism for compliance reporting. One integrated system. One point of accountability. Learn more about the 8864 Data Controller DAS Services for DASProtect Members Alliance offers a full suite of in-house DAS services — exclusively available to DASProtect members. Whether your facility needs hands-on reporting support, engineering expertise, or staff training, DASProtect gives you access to it all under a single maintenance program. Regulatory & Reporting Services Our most in-demand service. Alliance handles the full cycle of compliance reporting. From data validation and deviation identification to generating submission-ready reports for EPA and state agencies, your team gets accurate, on-time regulatory deliverables without carrying that burden internally. Engineering Services Configuration, system design, parameter setup, and technical support for complex monitoring requirements. Our engineers work directly in your DAS environment. IT Services Infrastructure support, server management, network configuration, and software environment maintenance so your DAS runs reliably without requiring internal IT resources to manage it. Training Group and private training sessions — in-person and online — from certified DAS experts. Contact Alliance to schedule a live demo of our Data Acquisition Systems and find out which solution fits your facility’s compliance needs. Schedule a Live Demo “Combining our services is pivotal in supporting our clients' every need. The Alliance way is a true differentiator, providing solutions-based onsite testing and monitoring with top SMEs to handle immediate environmental challenges. Alliance is positioned as your partner of choice for highest-level delivery.” Martin Gibson Executive Vice President, Emissions Monitoring "Facilities need a DAS built around their operations, their workflows, and the realities of compliance. Our systems are designed to simplify data management, reduce manual effort, and give teams confidence in the data they report every day." Brian Fowler Vice President, DAS Product Development Back to All Services Learn more about Data Acquisition Systems.

In an industry where regulatory precision meets operational urgency, flexibility and speed are everything. Whether you're responding to a system outage, gearing up for startup testing, or undergoing a site retrofit, Alliance's fleet of Temporary CEMS solutions deliver trusted air monitoring—right where and when you need it. June 24, 2025 Raising the Bar on Mobile Emissions Monitoring Advanced Temp CEMS Trailers for High-Stakes Compliance Temp CEMS mobile unit in the Alliance fleet. In an industry where regulatory precision meets operational urgency, flexibility and speed are everything. Whether you're responding to a system outage, gearing up for startup testing, or undergoing a site retrofit, Alliance's fleet of Temporary CEMS solutions deliver trusted air monitoring—right where and when you need it. Built for Today’s Environmental Demands These aren’t just temporary setups—they’re fully integrated mobile compliance platforms , engineered by environmental professionals who understand the stakes. While the Temp CEMS trailers are designed for rugged, mobile deployment, Alliance also offers cabinet-based systems for clients needing modular units that integrate with existing shelters or on-site enclosures. Both configurations are pre-calibrated, spec-compliant, and ready to monitor from day one—supported by Alliance’s leading experience in stack testing, CEMS operations, and regulatory consulting. Modular Cabinet CEMS Environics gas dilution system Zero air generation and pressure regulation board Flexotherm heavy duty gas conditioner Close-up of Ferotherm chillers and white dryer component Interior rack (Environics, ESC 8864, dual Alliance analyzers) Why It All Matters to Clients When your permit, uptime, or audit window is on the line, you need more than just "functioning equipment"-you need certified systems backed by proven expertise. Rapid Deployment - Operational in hours, not days Full EPA Compliance - Meets 40 CFR Part 60/75, MACT, and NESHAP requirements Risk Mitigation - Minimize drift, QA failures, or re-testing events Real-Time Assurance - Integrated DAHS and Alliance support means you're never in the dark Whether it's a long-term outage or a fast-tracked startup, our mobile trailers and modular cabinets ensure you're always covered. Applications: Critical Coverage When Compliance Can't Wait These solutions are designed for high-risk; high-urgency use cases where compliance, timing, and accuracy are non-negotiable: Planned Maintenance Shutdowns Avoid data gaps and maintain EPA reporting continuity. Startup & Commissioning Ensure emissions monitoring from the first day of operations. Emergency System Failures Deploy temporary trailers or cabinets quickly to restore compliance and protect permits. NSPS, MACT, or NESHAP Testing Support Bring in EPA-aligned temporary systems for third-party audits or scheduled tests. CEMS Upgrades or Retrofits Keep your monitoring seamless during infrastructure transitions. Disaster Recovery or Remote Site Support Alliance delivers mobile and modular systems where they're needed most-even in hard-to-reach or post-incident zones. Why Choose Alliance for Temp CEMS? Because you need a partner who delivers more than just equipment. Alliance's testing and monitoring services are trusted by industrial leaders across power, refining, pulp and paper, chemical manufacturing, and more. Our mobile trailer and cabinet solutions are backed by in-house CEMS experts, field service teams, and the same precision we bring to permanent installations. When you choose Alliance, you get equipment that's field-tested, compliance-certified, and ready when you are. And trusted advisors who are deeply experienced and dedicated to your success. Jett Rink Advanced Analytical Manager 20 Years Experience in the Environmental Field Steve DiMuzio Director of Sales, CEMS (CEM Service Line Sales Leader) Steve DiMuzio Director of Sales, CEMS (CEM Service Line Sales Leader) Talk to An Alliance CEMS Expert Today

Continuous Emissions Monitoring Systems (CEMS) installation, maintenance & compliance services. Part 60, 63 & 75 evaluations from Alliance experts. Services / On-Site Testing / Source Testing / CEMS CEMS Reduce your downtime risks with continuous monitoring. CEMS (Continuous Emissions Monitoring System) services are tailored to your compliance needs, and you can count on our extensive spare parts stock for fast service on your specific brand of equipment. Our CEMS areas of expertise cover a broad range of equipment types and industries. Alliance provides a comprehensive solution for emissions management, ensuring regulatory compliance, accurate monitoring, and timely maintenance. CEMS Service Offerings: Turnkey CEMS Integration | Temp CEMS | Installations | Commissioning | Training | Equipment Upgrades | Maintenance | QA/QC Audits | RATA Support Round-the-Clock Support: 24/7/365 support is always within reach. Fully Stocked Parts Inventory: The OEM brand name parts you need are on hand. Regulatory Assurance: Continuous monitoring and reporting to ensure compliance. Less Downtime: Reliable service and responsiveness optimize CEMS performance. Accurate Monitoring: Precise real-time emissions data for compliance and operations. Predictive Maintenance: Scheduled maintenance based on data trends to predict and prevent system failures. Cost Control: Regular maintenance controls repair costs and operational downtime. Knowledge Transfer: Expert training for environmental personnel, plant operators and technicians enhances system understanding and operation. Dedicated Temp CEMS Stay compliant, even during emergencies, with speedy service from our dedicated team of Temp CEMS experts and innovative mobile equipment. Minimize production downtime and maximize data collection with a customized Temp CEMS system, and expert technical and regulatory guidance. Assess the root cause of your existing system failure and design improved permanent systems with our CEMS specialists. Let our North American CEMS and dedicated Temp CEMS services be the cornerstone of your environmental and operational success. REQUEST INFORMATION “Our CEMS support hotline, deep bench of field service engineers, and large inventory of parts allows us to quickly respond to emergencies and solve issues efficiently.” Jason Miller Vice President, CEMS Read more about CEMS and Temporary CEMS services: Back to All Services

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Ensure clean air with our expert air quality assessment services. Reliable solutions for real-time air quality assessment. Services / On-Site Testing / Fugitive Emissions / Ambient Air Monitoring Ambient Air Monitoring Be a Better Neighbor Protect your community and build trust through proactive ambient air quality monitoring. Our comprehensive solutions help you maintain regulatory compliance, safeguard public health, and demonstrate your commitment to the communities that surround your facilities. REAL-TIME MONITORING Stay informed with continuous data that helps you respond quickly to changing conditions and address community concerns before they escalate. END-TO-END SOLUTIONS From network design to equipment installation, operation, and maintenance—we handle your complete monitoring system so you can focus on your operations and community relationships. HIGHLY TECHNICAL STAFF Our expert team brings deep regulatory knowledge and proven technical expertise to ensure accurate, defensible data that builds confidence with regulators and your community. LOCAL/REGIONAL/NATIONAL COVERAGE Whether you need monitoring at a single site or across multiple facilities nationwide, we have the infrastructure and experience to support your community commitments. Ambient Air Services Air Quality Monitoring | Meteorological Networks | Odor Assessments | Noise Consulting What We Monitor: Local, state, and federal air quality compliance parameters Harmful pollutant levels that affect surrounding communities Real-time fenceline data for operational decision-making When You Need Monitoring: Facility expansions, permit renewals, and operational compliance Remediation activities and environmental assessments Proactive environmental stewardship initiatives Why Ambient Air Monitoring Matters Ensures local, state, and federal regulatory compliance and prevents costly fines Protects community health by continuous monitoring and allowing mitigation of harmful pollutant levels Builds trust with surrounding communities through transparent, real-time data Enables targeted emission control strategies through data-driven insights With our deep expertise and varied services, we ensure your organization stays compliant with air quality standards while also managing other critical aspects affecting public welfare like odor and noise. Our Comprehensive Services Our end-to-end service guarantees precise monitoring and seamless compliance, safeguarding both your operations and the environment. Network design and equipment specification Regulatory liaison and permitting support Quality assurance and monitoring plans Site equipment installation and network commissioning Ongoing operation, maintenance, and calibrations Third-party accuracy assessments Data reporting to clients and regulatory agencies in the required format Proven Results Across Complex Projects Supporting 5-10 years of continuous ambient air monitoring on complex Superfund remediation projects Conducting rigorous comparative testing utilizing multiple monitoring technologies and instrumentation Achieving detection capabilities at or below single part per billion levels for complex VOC monitoring applications Providing 24/7 real-time monitoring with customized alarms allowing for advanced notification of changing conditions Demonstrating, in real-time, up to 100% emission control effectiveness. From design to deployment and beyond, we deliver end-to-end support that ensures accurate monitoring and seamless compliance, allowing you to be a better neighbor. REQUEST INFORMATION VIEW OUR ACCREDITATIONS “We’re not just checking a box—we’re making sure our clients can breathe easy, knowing their air quality systems are in expert hands.” Scott Manchester Director of Ambient Services Back to All Services