Stay Compliant. Protect Your Facility. Trust Alliance for SPCC Plans. From manufacturing plants and utilities to municipalities and logistics hubs, Alliance has decades of experience guiding organizations through SPCC requirements. Whether you need a new plan, a 5-year review or recertification, or an update after operational changes, our experts tailor compliance strategies to your specific facility. With Alliance, you get more than a plan—you get a partner committed to protecting your business and keeping you compliant every step of the way. 256-351-0121 Previous Item Next Item

Received South Carolina’s Industrial Stormwater Notice? Get Compliant—Fast. Alliance handles every step of South Carolina stormwater compliance—from reviewing your SIC code and submitting the NOI, to creating a site-specific SWPPP that meets SCDES requirements. We manage your sampling, lab work, inspections, and renewals, so you stay in compliance without the paperwork. Whether you need full permit coverage or a No-Exposure Certification, our local experts backed by a national team make it simple. 1-800-263-2229 Previous Item Next Item

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.

Your Partner in PFAS Air Testing and Compliance EPA’s announcement is just the beginning — and action today can help you mitigate future costs and liabilities. 256-351-0121 Previous Item Next Item

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

Founded in 2000, Alliance Technical Group has grown from a small Alabama stack testing company to North America's leading environmental services provider with 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 2200+ Dedicated Employees 60+ Locations in the US and Canada 110+ Mobile Laboratories Our Journey Founded in 2000 in Alabama as a small stack testing company, Alliance has since expanded into a full-service environmental compliance provider and a recognized leader in the North American market. A lot has changed for us since then, but one thing never will—we still put our clients first. EMPLOYEES 2000–2012 BUILDING THE BUSINESS 2012–2016 GROWTH THROUGH INVESTMENT 2016–2021 RAPID GROWTH & SERVICE LINE EXPANSION 2021–TODAY SCALING A NATIONAL/GLOBAL PLATFORM 2000 2 2005 10 2010 20 2015 50 2018 125 2020 675 2021 820 2022 945 2023 1,430 2024 1,720 2025 2,205 Stack Testing Lab Testing LDAR Ambient Air Consulting CEMS Software Acquisitions Since 2017, we have worked to increase our reach and improve our services through investments in our people, technology, and with acquisitions of these core businesses. Expand to see acquired companies 2025-2026 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

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

Hazardous Organic NESHAP (HON) compliance services & expertise. Regulatory strategy, testing & compliance management for chemical manufacturing facilities. 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. Keep this page handy to quickly find critical compliance dates, requirements, and advice as you begin your implementation programs. Affected Source Types Content h3 What’s Changing? When’s Your Compliance Deadline? For every affected source—it’s wise to act early so you’ll have the foresight to understand where moderations and capital costs may be needed, and how to strategize the scheduling. Expand the tiles for key HON RTR facts at a glance. Our experts will soon be updating their areas with tips and advice. For immediate questions, contact our HON team for answers. Fenceline Monitoring Will you need fenceline monitoring? New fenceline monitoring requirements for affected sources that use, produce, store, or emit: benzene 1,3-butadiene ethylene dichloride vinyl chloride ethylene oxide (EtO) chloroprene Compliance Due: For Existing Sources: July 15, 2026 or July 15, 2027 Depending on the requirement. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Flares New enhanced flare control device provisions. Incorporation of new operating and monitoring requirements for flare control devices. Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup, or by July 15, 2024 , whichever is later. Process Vents Removal of the TRE Index, and more. Updated definition of Group 1 Process Vent, including removal of TRE as the basis for determination Enhanced requirements for process vents in EtO service New maintenance venting provisions New D/F standard for halogenated Group 1 Process Vents Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Equipment Leaks Plan ahead for revised equipment leak provisions. Enhanced requirements for equipment in ethylene oxide (EtO) service New work practice standards for atmospheric PRDs Updated requirements for surge control vessels and bottoms receivers Compliance Due: For Existing Sources: July 15, 2026 EtO driven compliance amendments. July 15, 2027 All other amendments. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Together. Proactively. At Alliance Technical Group, our consultants and other subject matter experts review regulations that affect our clients. They are dedicated to knowing your industry needs and delivering tailored, best-in-class solutions. We encourage you to get familiar with the most recent HON amendments here. Heat Exchange Systems Changes to methods and requirements. Incorporation of the Modified El Paso Method Enhanced requirements for heat exchange systems in EtO service Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Storage Vessels Updates and new requirements. Updated definition of Group 1 Storage Vessel New requirements for internal floating roof tanks Enhanced requirements for storage vessels in EtO service New degassing requirements for Group 1 Storage Vessels Removal of pressure vessel exemption from the definition of storage vessel New monitoring requirements for pressure vessels Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Wastewater Streams Wastewater streams impacted by EPA's risk review too. Incorporation of enhanced requirements for wastewater streams in EtO service. Compliance Due: For Existing Sources: July 15, 2026 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Transfer Racks Does the pressure exemption update impact you? Transfer operations that load “at an operating pressure greater than 204.9 kilopascals” are no longer exempted from the definition of transfer operation. Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Meet the Expert Jill Martin, Project Director, Environmental Consulting Jill’s extensive experience with the Chemical Manufacturing Sector, including her expertise with HON, makes her your trusted partner. Compliance Program Implementation Support | Gap Analyses | Technical Support Jill’s Proficiencies: Air Compliance Initial Compliance and Other Applicability Determinations (Chemical Manufacturing Sector NSPS and NESHAP regulations & Petroleum Refinery Sector NSPS and NESHAP regulations) Comprehensive Compliance Program Development (Above ground Storage Tanks, RICE, CEMS, Flares) Reporting Greenhouse Gas Mandatory Reporting Requirements Emissions Inventory Toxic Release Inventory Title V Compliance Reporting Consent Decree Compliance Reporting Periodic NSPS Compliance Reporting Periodic MACT Compliance Reporting Air Permitting Title V Permitting Miscellaneous Permitting Actions Public Notice Coordination Miscellaneous RCRA Permitting and Compliance Stack Test Observation Ambient Air Monitoring Wastewater Streams Wastewater streams impacted by EPA's risk review too. Incorporation of enhanced requirements for wastewater streams in EtO service. Compliance Due: For Existing Sources: July 15, 2026 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Transfer Racks Does the pressure exemption update impact you? Transfer operations that load “at an operating pressure greater than 204.9 kilopascals” are no longer exempted from the definition of transfer operation. Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Heat Exchange Systems Changes to methods and requirements. Incorporation of the Modified El Paso Method Enhanced requirements for heat exchange systems in EtO service Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Storage Vessels Updates and new requirements. Updated definition of Group 1 Storage Vessel New requirements for internal floating roof tanks Enhanced requirements for storage vessels in EtO service New degassing requirements for Group 1 Storage Vessels Removal of pressure vessel exemption from the definition of storage vessel New monitoring requirements for pressure vessels Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Partners in Proactive Implementation Quelling Concerns. Answering Questions. With so many details to know about HON RTR amendments, is your path to compliance clear for you? What’s the impact going to be, and how do you get started? Tap into Jill’s expertise and Alliance resources for your solutions. Between Jill and our other subject matter experts at Alliance, clients receive the most premium end-to-end environmental services from expert consulting services to testing, monitoring, and laboratory services available. Get reliable and prompt solutions for whatever regulatory challenges you may have. It’s the better way to ensure compliance. Get Help With Hon Process Vents Removal of the TRE Index, and more. Updated definition of Group 1 Process Vent, including removal of TRE as the basis for determination Enhanced requirements for process vents in EtO service New maintenance venting provisions New D/F standard for halogenated Group 1 Process Vents Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Equipment Leaks Plan ahead for revised equipment leak provisions. Enhanced requirements for equipment in ethylene oxide (EtO) service New work practice standards for atmospheric PRDs Updated requirements for surge control vessels and bottoms receivers Compliance Due: For Existing Sources: July 15, 2026 EtO driven compliance amendments. July 15, 2027 All other amendments. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Fenceline Monitoring Will you need fenceline monitoring? New fenceline monitoring requirements for affected sources that use, produce, store, or emit: benzene 1,3-butadiene ethylene dichloride vinyl chloride ethylene oxide (EtO) chloroprene Compliance Due: For Existing Sources: July 15, 2026 or July 15, 2027 Depending on the requirement. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Flares New enhanced flare control device provisions. Incorporation of new operating and monitoring requirements for flare control devices. Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup, or by July 15, 2024 , whichever is later. Fenceline Monitoring Will you need fenceline monitoring? New fenceline monitoring requirements for affected sources that use, produce, store, or emit: benzene 1,3-butadiene ethylene dichloride vinyl chloride ethylene oxide (EtO) chloroprene Compliance Due: For Existing Sources: July 15, 2026 or July 15, 2027 Depending on the requirement. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Flares New enhanced flare control device provisions. Incorporation of new operating and monitoring requirements for flare control devices. Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup, or by July 15, 2024 , whichever is later. Process Vents Removal of the TRE Index, and more. Updated definition of Group 1 Process Vent, including removal of TRE as the basis for determination Enhanced requirements for process vents in EtO service New maintenance venting provisions New D/F standard for halogenated Group 1 Process Vents Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Equipment Leaks Plan ahead for revised equipment leak provisions. Enhanced requirements for equipment in ethylene oxide (EtO) service New work practice standards for atmospheric PRDs Updated requirements for surge control vessels and bottoms receivers Compliance Due: For Existing Sources: July 15, 2026 EtO driven compliance amendments. July 15, 2027 All other amendments. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Process Vents Removal of the TRE Index, and more. Updated definition of Group 1 Process Vent, including removal of TRE as the basis for determination Enhanced requirements for process vents in EtO service New maintenance venting provisions New D/F standard for halogenated Group 1 Process Vents Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Equipment Leaks Plan ahead for revised equipment leak provisions. Enhanced requirements for equipment in ethylene oxide (EtO) service New work practice standards for atmospheric PRDs Updated requirements for surge control vessels and bottoms receivers Compliance Due: For Existing Sources: July 15, 2026 EtO driven compliance amendments. July 15, 2027 All other amendments. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Fenceline Monitoring Will you need fenceline monitoring? New fenceline monitoring requirements for affected sources that use, produce, store, or emit: benzene 1,3-butadiene ethylene dichloride vinyl chloride ethylene oxide (EtO) chloroprene Compliance Due: For Existing Sources: July 15, 2026 or July 15, 2027 Depending on the requirement. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Flares New enhanced flare control device provisions. Incorporation of new operating and monitoring requirements for flare control devices. Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup, or by July 15, 2024 , whichever is later. Process Vents Removal of the TRE Index, and more. Updated definition of Group 1 Process Vent, including removal of TRE as the basis for determination Enhanced requirements for process vents in EtO service New maintenance venting provisions New D/F standard for halogenated Group 1 Process Vents Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Equipment Leaks Plan ahead for revised equipment leak provisions. Enhanced requirements for equipment in ethylene oxide (EtO) service New work practice standards for atmospheric PRDs Updated requirements for surge control vessels and bottoms receivers Compliance Due: For Existing Sources: July 15, 2026 EtO driven compliance amendments. July 15, 2027 All other amendments. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Fenceline Monitoring Will you need fenceline monitoring? New fenceline monitoring requirements for affected sources that use, produce, store, or emit: benzene 1,3-butadiene ethylene dichloride vinyl chloride ethylene oxide (EtO) chloroprene Compliance Due: For Existing Sources: July 15, 2026 or July 15, 2027 Depending on the requirement. For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Flares New enhanced flare control device provisions. Incorporation of new operating and monitoring requirements for flare control devices. Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup, or by July 15, 2024 , whichever is later. Heat Exchange Systems Changes to methods and requirements. Incorporation of the Modified El Paso Method Enhanced requirements for heat exchange systems in EtO service Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Storage Vessels Updates and new requirements. Updated definition of Group 1 Storage Vessel New requirements for internal floating roof tanks Enhanced requirements for storage vessels in EtO service New degassing requirements for Group 1 Storage Vessels Removal of pressure vessel exemption from the definition of storage vessel New monitoring requirements for pressure vessels Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Wastewater Streams Wastewater streams impacted by EPA's risk review too. Incorporation of enhanced requirements for wastewater streams in EtO service. Compliance Due: For Existing Sources: July 15, 2026 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Transfer Racks Does the pressure exemption update impact you? Transfer operations that load “at an operating pressure greater than 204.9 kilopascals” are no longer exempted from the definition of transfer operation. Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Wastewater Streams Wastewater streams impacted by EPA's risk review too. Incorporation of enhanced requirements for wastewater streams in EtO service. Compliance Due: For Existing Sources: July 15, 2026 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Transfer Racks Does the pressure exemption update impact you? Transfer operations that load “at an operating pressure greater than 204.9 kilopascals” are no longer exempted from the definition of transfer operation. Compliance Date(s): For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Heat Exchange Systems Changes to methods and requirements. Incorporation of the Modified El Paso Method Enhanced requirements for heat exchange systems in EtO service Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later. Storage Vessels Updates and new requirements. Updated definition of Group 1 Storage Vessel New requirements for internal floating roof tanks Enhanced requirements for storage vessels in EtO service New degassing requirements for Group 1 Storage Vessels Removal of pressure vessel exemption from the definition of storage vessel New monitoring requirements for pressure vessels Compliance Due: For Existing Sources: July 15, 2027 For New Sources: Upon initial startup or on July 15, 2024 , whichever is later.

Need Stack Testing Fast? Arkansas Teams Ready to Mobilize As the largest stack testing company in the U.S., Alliance brings national scale with established Arkansas crews who understand your requirements and timelines. We support facilities facing last-minute changes and tight compliance deadlines without adding stress. Little Rock: 479-857-2146 Bryant: 501-847-7077 Previous Item Next Item

Pinpoint Rod Packing Leaks with Optical Gas Imaging Our certified LDAR technicians use advanced FLIR infrared cameras to detect and quantify emissions from rod packing systems in upstream, midstream, and downstream environments. We deliver actionable insights and compliance-ready data to help you meet regulatory standards like Reg 7 and 40 CFR Part 60 while minimizing fines and environmental risk. 256-351-0121 Previous Item Next Item

South Carolina Air Permit Renewal Alliance provides comprehensive services to prepare and submit the entire Air application at a competitive cost. We guarantee that all project work, upon completion, will fully comply with all applicable local, state, and federal codes and regulations, and will be performed in accordance with recognized professional standards and best technical practices. 864-232-1556 Previous Item Next Item

Critical 2025 air quality reporting deadlines & compliance guidance. Stay compliant with EPA requirements. Expert assistance from Alliance consultants. 2025 Air Reporting Deadlines The Better Way to Navigate Compliance Reporting deadlines are approaching fast—be proactive with expert help. Environmental compliance is more than just remembering a date—we know the process can be complicated. That’s why Alliance takes a proactive approach. Staying ahead gives us the flexibility to handle unexpected adjustments and ensure you meet your goals—on time. From deadline reminders to consulting expertise and even reporting, our experienced environmental consultants and compliance professionals help you every step of the way. Take the complexity, uncertainty, and hassle out of regulatory standards. Contact us to help you navigate compliance with confidence. Content h3 Click a State From the Map Below to View Air Reporting Deadlines Disclaimer: Alliance Technical Group shall not be held liable for any reliance on this content. It is the responsibility of the user to confirm compliance with all applicable regulations.

CUSTOM-SIMULATED SKYBRIDGE DEMOS Request a live custom demo to see how SkyBridge Suite can transform your facility’s compliance reporting and workflow management for Method 21, OGI, Engine Testing, Generators, Turbines, and more. 256-351-0121 Previous Item Next Item

Texas Air Permit Renewal Alliance provides comprehensive services to prepare and submit the entire Air application at a competitive cost. We guarantee that all project work, upon completion, will fully comply with all applicable local, state, and federal codes and regulations, and will be performed in accordance with recognized professional standards and best technical practices. (832) 384-9475 Previous Item Next Item

Get Ahead of OOOOb NHV Compliance — Secure Your Testing Schedule Today From intermittent sources like produced water tanks to flare feeder streams, Alliance delivers proven solutions for even the toughest NHV testing scenarios. Our responsive teams, deep industry experience, and advanced logistics ensure every step—from planning to analysis—is handled with precision and care. 256-351-0121 Previous Item Next Item