Services / On-Site Testing / Source Testing / Stack Testing Stack Testing Expect the best from the largest stack testing provider in the U.S. Receive consistent, responsive service from skilled stack testing professionals. Expect best in class response for deliverable creation and clear accurate reporting to help you meet all of your compliance demonstration and performance requirements. Stack Testing Services Compliance Demonstration | Engineering/Investigative Test Programs | On-Site FTIR Spectroscopy | Specialty Testing | Low Level PM Sampling | Performance Specification Testing (RATA) Compliance Demonstration PM (filterable PM, condensable PM, PM-10, PM-2.5, OTM-37) Metals, including Hg Acid gases Combustion gases Volatile and Semi-Volatile Organics (total and speciated) Dioxins and Furans Formaldehyde Specialty Testing (PFAS, EtO, Combustors) Baghouses, Cyclones, and ESPs FGD and dry scrubbers SCR and NSCR Oxidizers (thermal, regenerative, and catalytic) Engineering/Investigative Test Programs Do you have a high priority compliance test on the calendar and want advanced assurance that your process and controls are performing adequately? Are you experiencing process-related challenges that accurate emissions data could help diagnose and solve? Our experienced testing professionals are well equipped to help you design a measurement program to address all the above safely and efficiently. And our fully integrated consultants are accessible for SME consultations. Performance Specification Testing (RATA) Alliance provides Part 60, Part 63, and Part 75 continuous emissions monitoring system (CEMS) evaluations and relative accuracy test audits (RATA) for all manner of CEMS configurations within all applicable industries. From routine gas and flow RATAs to highly complex GC, PM and Mercury RATAs, we have you covered. Specialty Testing One of Alliance’s key stack testing differentiators is our ability to plan and execute testing solutions for the most complex emissions targets and scenarios. Dilution Based Sampling for Particulate Matter (OTM-37) PFAS Sampling (OTM-45 & OTM-50) Diluted CEMS Sampling for High Moisture or Highly Concentrated Sampling Locations Direct Interface Gas Chromatography for Speciated VOC and Sulfur Compounds OOOOb Combustor Compliance Testing (OTM-52) Hazardous Waste Combustion CPT Programs Low Level PM Sampling When facing the rapidly decreasing compliance thresholds for PM, PM-10, and PM-2.5, you need a highly experienced testing partner to create a testing plan to mitigate the many challenges associated with accurately quantifying very low levels of particulate matter. When every grain of PM matters, Alliance ensures accuracy with advanced equipment, a fully developed internal laboratory network, and nuanced quality control procedures. On-Site FTIR Spectroscopy Whether demonstrating compliance with a very low-level pollutant standard (formaldehyde, ethylene oxide, HCl) or addressing complex process gas stream challenges, Alliance has the advanced instrumentation and a deep bench of FTIR spectroscopists to help navigate the complexity inherent to this sampling approach. REQUEST INFORMATION “People like what they do at Alliance. I think they understand it's a very important role. That pride tells our clients they’ve made the right choice.” Snapper Armstrong Vice President, Stack Testing VIEW OUR ACCREDITATIONS View Accreditations Learn more about Source Testing. A History of Loyalty and Service: What makes a dedicated Stack Team. Loyalty isn’t just a word; it’s a practice. Marking his 20-year anniversary at Alliance, Snapper Armstrong, Vice President of Sales for ... Harnessing Renewable Natural Gas: A Sustainable Path to Climate Goals and Methane Reduction Reducing methane emissions has become a critical focus in the fight against climate change. Methane, a greenhouse gas, has over 25 times ... Saluting Earth Month Heroes: The Secondary Aluminum Industry During Earth Month, Allianc Technical Group honors our industry partners dedicated to environmentally responsible practices that generate... Back to All Services

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Services / Environmental Compliance / Assessment & Remediation Assessment & Remediation Understand and reduce your impact. Get expert advice and solutions for your environmental issues. We help clients understand potential risks in property transactions, assess known or suspected environmental impacts, and remediate existing contamination in soil, water, and air using an arsenal of investigative procedures and decades of experience to develop practical, cost-effective solutions. Environmental site assessments. Comprehensive due diligence in delivering full-service Phase I & II Environmental Site Assessments using ASTM standards. Investigative remediation services. Client need-based solutions are expertly delivered for contamination remediation of Air, Water, and Soil Matrices, including In-Situ Chemical Oxidation, Enhanced Bioremediation, and Soil Vapor Extraction. Advanced impact management. Decades of experience come together to offer solutions for wetland delineation, RCRA/CERCLA permitting, and long-term monitoring for environmental compliance and impact. Services & Solutions Assessment and Remediation Services Environmental Site Assessment Phase I and II | Wetland Delineation | Brownfield Redevelopment | RCRA/CERLA | Permitting | Media Management Planning | Remediation | ALTA Surveys | Topographic Surveys | Zoning Reports | Site Investigations | Brownfield Redevelopment Phase 1 Environmental Site Assessment (ESA): Phase 1 ESAs are conducted in general conformance with ASTM Standard E1527-21. The primary goal of a Phase I ESA is to identify recognized environmental conditions (RECs), which refer to the presence or likely presence of hazardous substances or petroleum products on a property that could pose a risk to human health or the environment. Historical Data Review Regulatory Database Review Site Reconnaissance Interviews Our team's capability to complete Phase 1 ESAs with a quick turnaround time ensures a comprehensive evaluation of the property's environmental status, facilitating informed decision-making regarding future actions. Phase 2 Environmental Site Assessment (ESA): A Phase II Environmental Site Assessment (ESA) is essential for evaluating a property's environmental condition and identifying potential contamination risks. This process involves several critical steps to ensure a thorough analysis. Sampling soil, groundwater, and air Using advanced equipment to collect samples Laboratory analysis to detect contaminants Risk assessment based on regulatory standards Detailed reporting with recommendations Our experienced team uses state-of-the-art equipment to provide reliable, actionable insights, helping clients mitigate risks and make informed decisions on property transactions or developments. Property Condition Assessment Conducting a Site Reconnaissance Reviewing Relevant Documents Interviews Reviewing User-Provided Information Cost Estimation Replacement Reserves Schedule Preparation of a PCA Report Remediation Following a site assessment, we address environmental impacts and reduce contaminants with custom-designed methods tailored to each situation. We avoid generic remediation plans, providing in-situ and ex-situ treatments and work closely with clients to find cost-effective solutions. These may involve traditional or innovative remedies, depending on site complexity. Our technologies include Chemical Oxidation and Reduction, Enhanced Bioremediation, Pump and Treat, Excavation, Soil Vapor Extraction, and Thermal Desorption. REQUEST INFORMATION “Through a proactive approach, we don’t simply meet regulatory standards—we exceed them, setting new benchmarks in environmental responsibility and empowering our clients to achieve their compliance goals with confidence.” Jeff Lask Senior Vice President Back to All Services

Renewable Natural Gas (RNG) production is a sustainable way to address methane and other toxic emissions reductions—while recycling waste. Facilities that embrace RNG production are profiting by turning waste into fuel for energy and other revenue streams, all while reducing methane emissions. Recent news focuses on the rise in demand and funding incentives that bring new opportunities for food waste RNG production facilities. On June 12, 2024, the U.S. government announced the “National Strategy for Reducing Food Loss and Waste and Recycling Organics,” which includes nearly $200 million in funding from the Bipartisan Infrastructure Law, supported by the EPA, USDA, and FDA. Along with recycling and composting, this funding supports food waste anaerobic digestion—a key component of RNG production. The increase in funding for the RNG industry is an opportunity to develop production facilities that can help meet these new strategy goals. Significant Methane Capture Potential Food waste RNG remains an underutilized revenue source in North America despite its success in Europe. Food waste decomposition in landfills is a major methane emitter, contributing up to 58% of landfill methane emissions. By diverting food waste to anaerobic digesters, methane can be captured earlier in the decomposition process, enhancing RNG production and reducing emissions by converting waste into RNG and nutrient-rich digestate (which doubles as fertilizer), these digesters support sustainable energy transitions, prevent net increases in atmospheric CO2, and bolster local economies by creating jobs and generating additional revenue. Complex Testing and Compliance Requirements As the RNG production sector continues to grow, navigating a complex regulatory environment with precision remains critical for RNG production facilities to demonstrate compliance and optimize uptime by engaging with experienced environmental services and testing professionals, RNG producers can ensure that their projects will meet applicable environmental regulations and permitting requirements prior to construction, as well as the facility’s ongoing compliance, reporting, sampling, and testing requirements once in operation. Conclusion Government initiatives and funding are driving the development of food waste RNG facilities. Leveraging food waste for RNG will generate additional economic opportunities while progressing the current Administration’s environmental goals. As North America catches up with Europe in this field, the untapped potential of food waste RNG is poised to become a significant contributor to both environmental and economic objectives. About the Author Tim Sperfslage, Project Director Environmental Consulting Services, Alliance Technical Group With a strong background in air permitting and compliance across multiple industries, Tim brings more than 15 years of experience in air quality to his client’s environmental projects. Supporting clients with regulatory and technical air quality knowledge, Tim proficiently manages complex permitting projects with cross-discipline teams, conducting technical audits, and directing environmental compliance projects. Contact Alliance Technical Group  for expert support in compliance and operational efficiency—designed to simplify RNG challenges and deliver timely and precise results.

On March 12, 2025 , U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin announced as the "greatest and most consequential day of deregulation in the history of the United States" . This initiative involves 31 actions aimed at reconsidering and potentially rolling back numerous environmental regulations. The stated goals of these actions are to unleash American energy, lower the cost of living for American families, revitalize the American auto industry, restore the rule of law, and give power back to the states . Key Areas of Regulatory Reconsideration: Administrator Zeldin highlighted several critical areas where changes are being pursued. These are likely to have significant implications for various industries: Energy Sector:  Clean Power Plan 2.0:  Reconsideration of regulations on power plants that aimed to shift the nation's electrical fuel mix. The goal is to ensure affordable and reliable electricity. Mercury and Air Toxics Standards (MATS):  Review of regulations that targeted coal-fired power plants. The administration aims to avoid shutting down affordable energy sources. OOOO b/c Regulations:  Reconsideration of rules affecting the oil and gas industry. The focus is on energy production and reducing burdens on producers. Greenhouse Gas Reporting Program (GHGRP):  Review of the mandatory program requiring emissions reporting, with the aim of reducing costs for businesses. Effluent Limitations Guidelines (ELG):  Reconsideration of water pollution limits for coal power plants and wastewater regulations for oil and gas extraction to lower energy costs and support water reuse. Risk Management Program (RMP) Rule:  Review of the rule for oil and natural gas refineries and chemical facilities, citing concerns about national security and competitiveness. Transportation Sector:  Light-Duty, Medium-Duty, and Heavy-Duty Vehicle Regulations:  Reconsideration of rules that formed the basis for the prior administration's electric vehicle standards, aiming to preserve consumer choice and affordability. 2009 Endangerment Finding:  Review of the finding that greenhouse gases are pollutants. Manufacturing and Other Industries:  Technology Transition Rule:  Reconsideration of rules forcing the use of specific technologies for refrigerant systems, impacting grocery stores and semiconductor manufacturing. Particulate Matter National Ambient Air Quality Standards (PM 2.5 NAAQS):  Review of standards that the administration believes have hindered manufacturing and small businesses. National Emission Standards for Hazardous Air Pollutants (NESHAPs):  Reconsideration of multiple air pollution standards affecting various sectors, including chemical manufacturing, sterilization facilities, rubber tire manufacturing, copper smelting, iron and steel manufacturing, lime manufacturing, coke ovens, and taconite ore processing. The administration is considering a 2-year compliance exemption  for affected facilities while the rulemaking proceeds. Water Regulations:  Waters of the United States (WOTUS) Rule:  Revision of the definition to provide clearer and simpler direction to farmers, landowners, businesses, and states, following the Supreme Court ruling in Sackett v. Environmental Protection Agency . The revised definition will focus on relatively permanent, standing or continuously flowing bodies of water and wetlands with a continuous surface connection to those waters. Air Quality Planning and Permitting:  "Good Neighbor Plan":  Reconsideration of the plan to address interstate transport of air pollution, aiming to advance cooperative federalism and work with states on their State Implementation Plans (SIPs). State and Tribal Implementation Plans (SIPs/TIPs):  Commitment to resolving the backlog of unresolved SIPs/TIPs from the previous administration. Exceptional Events Rulemaking:  Review to prioritize the allowance of prescribed fires within State and Tribal Implementation Plans for better forest management. Other Areas:  "Social Cost of Carbon":  Overhauling the measurement used to assess the economic damages of carbon emissions, which the administration views as contributing to significant regulatory costs. Enforcement Discretion:  Redirecting enforcement resources to focus on the EPA's core mission and avoid actions that discriminate based on race or socioeconomic status or shut down energy production. Termination of Environmental Justice and DEI Arms:  Ending the Environmental Justice and Diversity, Equity, and Inclusion arms of the agency. Reconstituting Science Advisory Boards:  Reestablishing the Science Advisory Board (SAB) and Clean Air Scientific Advisory Committee (CASAC) to ensure independent scientific advice. Coal Ash Program:  Prioritizing the program to expedite state permit reviews and update coal ash regulations. Hurricane Recovery:  Utilizing enforcement discretion to further North Carolina’s recovery from Hurricane Helene. Potential Timelines and Considerations: While these announcements signal a clear intention to move forward with deregulation, it is important to note that the actual implementation of these changes will likely take time. The process will involve formal rulemaking, including proposing rule changes, conducting public hearings, and addressing public comments. These processes can be lengthy and may face legal challenges. External analysis suggests that implementing many of these rollbacks could take years  and face difficult legal battles , especially in light of recent Supreme Court decisions. We will continue to monitor these developments closely and provide updates on the specific timelines and details of these regulatory changes as they become available. Please do not hesitate to reach out if you have any questions about how these potential changes may affect your business. Sources: EPA Approves State of Texas Plan to Improve Air Quality in San Antonio Area EPA Will Revise Wastewater Regulations for Oil and Gas Extraction to Help Unleash American Energy (ELGs: Oil and Gas) EPA Announces Action to Implement POTUS’s Termination of Biden-Harris Electric Vehicle Mandate Trump EPA Announces Reconsideration of Burdensome Greenhouse Gas Reporting Program Trump EPA Kicks Off Formal Reconsideration of Endangerment Finding with Agency Partners Administrator Zeldin Begins Restructuring Regional Haze Program Administrator Zeldin Takes Action to Decrease Risk of Future Catastrophic Wildfires (“Exceptional Events”) EPA Announces Action to Address Costly Obama, Biden “Climate” Measurements (Social Cost of Carbon) EPA Announces Swift Actions on Coal Ash Program (Coal Combustion Residuals) Trump EPA to Reconsider Biden-Harris MATS Regulation That Targeted Coal-Fired Power Plants to be Shut Down Trump EPA Announces OOOO b/c Reconsideration of Biden-Harris Rules Strangling American Energy Producers Trump EPA Announces Reconsideration of Air Rules Regulating American Energy, Manufacturing, Chemical Sectors (NESHAPs) Administrator Zeldin Takes Action to Prioritize Cooperative Federalism, Improve Air Quality Faster EPA Helps NJ and NY Businesses and Municipalities Meet Environmental Goals Trump EPA Announces Reconsideration of Biden-Harris Rule, “Clean Power Plan 2.0”, That Prioritized Shutting Down Power Plants While Raising Costs on American Families Administrator Zeldin Directs Enforcement Resources to Align with Executive Orders and EPA’s Core Mission EPA Announces Reconsideration of the Risk Management Plan to Boost Safety, Competitiveness of American Businesses Trump EPA Takes Action to Lower Costs for American Families at the Grocery Store by Reconsidering Burdensome Technology Transition Rule EPA to Accept Nominations for Science Boards EPA Terminates Biden’s Environmental Justice, DEI Arms of Agency Trump EPA Announces Path Forward on National Air Quality Standards for Particulate Matter (PM2.5) to Aid Manufacturing, Small Businesses Trump EPA Announces Use of Enforcement Discretion to Further North Carolina’s Recovery from Hurricane Helene Administrator Zeldin Announces EPA Will Revise Waters of the United States Rule EPA Launches Biggest Deregulatory Action in U.S. History Trump EPA Announces Plan to Work with States on SIPs to Improve Air Quality and Reconsider “Good Neighbor Plan” EPA Announces It Will Reconsider 2024 Water Pollution Limits for Coal Power Plants to Help Unleash American Energy (ELG: Steam Electric)