Markets / Oil & Gas Serving the Upstream & Midstream Oil & Gas Industry Upstream and midstream 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 and midstream 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 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. Fugitive Emissions Testing & Monitoring OGI execution with FLIR, drone support, & 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. 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. REQUEST INFORMATION

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

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

The Environmental Protection Agency uses audits to safeguard health and the environment by helping facilities discover and fix federal and state law violations. The EPA may audit your facility for several reasons — increased failed calibrations, questionable data for CO2 audits, flow-to-load or heat input changes, reporting errors, late quarterly reports, or as part of an EPA, state, or annual compliance review. This process can be time-consuming and stressful. Your facility can best handle an audit with preparation and a data acquisition system (DAS) like StackVision, Alliance's industry-leading DAS, for monitoring, reporting, and compliance. How Your Data Acquisition System Helps You Pass Regulatory Audits It's essential that you can walk the person certifying compliance at your facility through how all of your compliance averages are calculated and how to make adjustments to parameters. With a DAS like StackVision, you decide how you need to comply and how you want to configure your system — while starting within the framework of a robust compliance engine that gives you full transparency and control. StackVision creates, calculates, records, and retains each of these averages and data points for verification purposes. This traceability is extremely valuable during audits with regulators, since you can show the exact values, processes, and calculations behind any questioned average. Being able to easily prove that quality assurance procedures are in place — and being followed precisely — also gives you firm ground to stand on during an audit. A quick review of a few displays or scheduled reports each morning tells you the state of your system and lets you plan your day. If a monitor is drifting out of control, you can respond. If a calibration check fails, you can act quickly to fix it and reduce downtime. Since much of what used to eat up your time is automated, you have more time to investigate anything trending toward a problem. That doesn't mean the process is out of your hands, though. A good DAS configures the system to fit your needs and the automation level that's right for you. You should also be able to use the software to dig into your data, see charts comparing factors, edit operational data, and add notes, codes, and flags to explain any unusual situation. Additionally, a DAS can provide predictive averages and alarming to help you avoid hazardous or legally challenging situations like exceedances and deviations — helping you stay out of trouble from an environmental or permit perspective while maximizing operating efficiency. Download Our CEMS Regulatory Audit Checklist: CEMS Regulatory Audit Checklist CEMS Audit Checklist: General Questions To prepare for an audit, know the answers to the following general questions. Has this facility ever been through an audit? If yes, when? What was the outcome of the audit, and what was the response to the audit report? What training have plant operators received to understand the permit, their obligations under the permit, and plant management expectations? How often is refresher training provided? What training have the CEM system operators received to understand the permit, their obligations under the permit, and plant management expectations? How often is refresher training provided? What kind of training have the CEM system operators received on maintaining the hardware? How often is refresher training provided? Are there records showing when all the training occurred? Is there documentation describing the topics covered for all the training mentioned? CEMS Audit Checklist: Recordkeeping Questions To prepare for an audit, know the answers to the following record-keeping questions. Does the plant have organized record-keeping or a filing system? Does the plant have a designated area for retaining all working records for the CEM/COM systems? Usually, these are the records for the current year. Does the plant have a designated area for the long-term retention of past operating and maintenance records (at least five years or more)? Remember, even on days the unit does not operate, you still need records proving that the full complement of records isn't required. CEMS Audit Checklist: Quality Assurance Quality Control (QA/QC) Plans To prepare for an audit, know the answers to the following QA/QC plan questions: When was the last time the QA/QC Plan was updated? When was the last time the CEM operators reviewed the QA/QC Plan? Are there any records documenting the dates of review? Are the Designated Representative and Alternate Designated Representative identified in the plan by title and name? Has the plan ever been submitted to the local or state agency for review? If yes, what was the result of that review? What was the plant's reaction to the regulatory review? Is there an outline or written procedure for each of the quality assurance tests in the plan? Does the plan describe how to address invalid data for Part 75 reporting and apply Missing Data algorithms? Does the plan describe how to address invalid data for Part 60 reporting? How to add reason and action codes? Does the plan describe how opacity data is processed when invalid or during maintenance work? Does the plan describe how to calculate monitored values for: 6-minute opacity averages 1-hour averages for Part 75 1-hour averages for Part 60 3-hour averages Extended averages for 24-hour, 30-day, or 30-boiler operating averages CEMS Audit Checklist: Acid Rain Program Questions To prepare for an audit, please do the following: Review the Part 75 CEM Field Audit Manual Have up-to-date copies of the following documents: Part 75 regulations Reporting instructions for Monitoring Plan records Quality Assurance and Certification Emission records Plain English Guide to the Part 75 Regulations Establish a designated location for all correspondence with the EPA, including: Notices for Commencing Certification/Recertification activities Notices for RATAs Submission notices and feedback reports from the EPA via ECMPS Have an up-to-date written procedure for how to prepare, generate, and evaluate EDR files for: Updating and revising Monitoring Plan records Quality Assurance and Certification records Emission Records Have an up-to-date written procedure to review Part 75 submission files prior to submission. Have a written procedure outlining the facility's plans for balancing any SO2 or NOx mass emissions versus allowances (federal or state programs). CEMS Audit Checklist: ECMPS Questions To prepare for an audit, know the answers to the following ECMPS questions: Does the plant know where to find ECMPS information? Does the plant have the latest set of reporting instructions for: Monitoring Plan records Quality Assurance and Certification records Emissions records Does the plant have a procedure for securing and updating the passwords for ECMPS used by the various agents? Need assistance? We're here to support you and make sure your facility is audit-ready.

Working in an environmental group at a facility means managing competing responsibilities — all of which require close attention to detail. When you have in-house procedures, checklists, QA/QC plans, and other organizational aids, you achieve greater consistency and perform tasks more efficiently. Our Monitoring Plan Checklists serve as a built-in reminder for infrequent but recurring activities that can't be missed. Having standardized workplace procedures in place keeps you in compliance and out of trouble with auditors. There's a Better Way — and it starts with planning ahead. Data Review Checklists for CEMS Use the following data review checklists to stay organized and audit-ready: Data Review Checklist for Full CEM Systems Data Review Checklist for Appendix D CEM Systems Data Review Checklist for Appendix E CEM Systems Data Review Checklist for LME (Low Mass Emitting) Monitoring Systems Additional Activities to Keep on Your Radar Quarterly Linearities Before attempting a linearity check, confirm you have more than 500 psi remaining in each cylinder. Review the last few daily calibration checks to verify monitors are responding within normal expectations. Routine Maintenance Equipment and Supplies Routine maintenance is typically performed on a monthly schedule. Set aside time for it, and keep extra equipment and supplies on hand to minimize downtime. Maintaining spare equipment and a contingency plan for unexpected situations is a sound practice. Gas Cylinder Supplies Track your gas cylinder inventory carefully — Protocol I gas cylinders require at least 28 days from order to ship after the vendor receives your request. If you're down to your last set of linearity or daily gas cylinders, order at least two more sets immediately. Shelf life is not a concern; certification sheets typically confirm cylinders remain valid for at least seven years. Compliance Reports Compliance reports are high-stakes documents with specific content requirements. Reporting frequency varies by program — quarterly, semi-annually, or annually. A checklist approach ensures consistency and completeness. Key reports include: Quarterly acid rain files, review documents, and submission records Quarterly excess emissions, downtime, and performance summary reports for state or local agencies Semi-annual monitoring status reports for your operating permit Annual compliance reports for your operating permits Reports for Management Review Facility management needs visibility into unit performance to stay prepared — staffing levels, supply chains, and operational decisions all depend on it. Standard reports to prepare include: Unit/Turbine/Generator Performance Reports Fuel Consumption Reports Generation Reports Multiple Unit Operating Reports A well-maintained set of procedures and supporting documents reduces the burden of ongoing compliance obligations. In the event of staff turnover, documented processes also help new team members understand their responsibilities and get up to speed quickly. Alliance's StackVision DAS includes built-in tools to support your monitoring plan. The QA Test Deadline Report tracks scheduled QA activities — including upcoming linearities, cylinder gas audits, RATAs, annual fuel flow meter calibrations, and NOx Correlation testing (required every five years) — and shows how many days remain before each deadline. The report can be scheduled to print or email automatically, or configured to generate an alarm when a warning threshold is reached. It's one of the more practical tools for avoiding missed QA milestones. Alliance Technical Group also provides regulatory and reporting services for facilities that need additional support managing compliance obligations.

Alliance Technical Group's regulatory experts created an extensive Guide to Part 75 Audit Preparation to help plants stay audit-ready. These helpful checklists are a useful starting point to prepare for an inspection or audit by either a state agency or the Environmental Protection Agency (EPA). For more information, consult the EPA's Field Audit Manual. Download the free 40-page Guide to Part 75 Audit Preparation.