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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.

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

A focused guide to DEP review tracks, backup generation, air monitoring and reporting under Executive Order 2026-05 and Act 21 of 2026 Regulatory information reviewed September 18, 2026. Key Takeaways For DEP permit or authorization applications submitted after August 18, 2026, data center projects with peak demand over 25 MW face two review tracks. Signing a GRID consent agreement enables rolling review; nonsigners face additional prerequisites. Separately, applicants for tax-program certification must submit an executed GRID agreement under the Department of Revenue’s August 2026 guidelines. DEP's template addresses backup emissions, at least three continuous air monitors with public data, and third-party-verified reporting. These are selected terms within a broader agreement; the executed project-specific consent order controls. Act 21 of 2026 separately requires operating data centers with peak electric demand of 10 MW or greater to report energy and water consumption by July 1, 2027, and annually thereafter. Reporting noncompliance carries a $10,000-per-day civil penalty until submission. On August 18, 2026, Governor Shapiro signed Executive Order 2026-05, published September 5, 2026, at 56 Pa.B. 5898 and codified at 4 Pa. Code §§ 7.1081 to 7.1089. Effective immediately, the order integrates the Governor's Responsible Infrastructure Development (GRID) Requirements into DEP's permitting process. For covered DEP applications, executing a project-specific Consent Order and Agreement (COA) determines the review track. DEP’s template, revised August 18, 2026, addresses energy, community and workforce commitments as well as environmental obligations. It allows changes for project-specific facts. The discussion below describes selected template provisions; the executed agreement controls each project’s obligations. Act 21 of 2026 (SB 146, approved July 12, 2026) added Subarticle B to Article XVIII-B of the Fiscal Code, establishing annual energy and water reporting for qualifying data centers at 10 MW or greater. Separately, the executive order directs DEP to examine potential changes to generator regulations without setting a deadline for that examination. These eight questions focus on selected permitting, backup-generation, air-monitoring and reporting issues. They are not a complete GRID compliance checklist. Evaluate the full executed agreement, tax-program requirements and applicable air and water permits together. 1. Will peak demand exceed 25 MW? Section 7.1082(a) sets the peak-demand threshold for the special DEP review process at over 25 MW. The two tracks in § 7.1082(b) and (c) apply to DEP permit or authorization applications submitted after the order’s effective date for projects above that threshold. This is a project electricity-demand threshold, not a general threshold for needing an air permit. At 25 MW or less, these two special review tracks do not apply. Ordinary air and other environmental authorizations may still be required. Section 7.1082(e) excludes data center projects from the PA Permit Fast Track Program regardless of size. Separately, Act 21 reporting reaches qualifying operating facilities at 10 MW or greater, and tax-program certification has its own GRID requirement. Establish the project’s peak demand and anticipated expansion before evaluating applicability. Confirm the air-permitting authority. DEP directs air-permit applicants in Allegheny County and Philadelphia to the Allegheny County Health Department and Philadelphia Air Management Services, respectively. Evaluate those local requirements alongside applicable DEP authorizations and GRID obligations. 2. Will you sign the GRID consent order? Executing the consent order is required for the rolling-review track; the order also provides a nonsigner track. Under § 7.1082(b)(1), before submitting new applications, a participating developer must notify DEP of its intent, meet with DEP about the permits and local approvals, and execute a project-specific consent order based on the template. Under § 7.1082(b)(2), DEP reviews applications on a rolling basis. It may issue qualifying permits on that basis only after receiving documentation of consistency with the local comprehensive plan and all applicable local subdivision and zoning approvals. The Payback and Permit Decision Guarantee processing timelines begin only after the required local-approval documentation is received. Signing does not guarantee permit approval. Signing also matters outside these DEP review tracks. Section II of the Department of Revenue’s August 2026 tax-program guidelines requires applicants for Computer Data Center Equipment Exemption Program certification, as of August 18, 2026, to include an executed DEP consent agreement implementing GRID. That application requirement has no stated 25 MW cutoff. Evaluate certification and exemption eligibility separately from the DEP review-track threshold; a smaller project should not assume it is outside GRID for tax-program purposes. 3. What happens if you do not sign? Section 7.1082(c) establishes the nonsigner track. DEP does not begin review until the applicant documents local comprehensive-plan consistency, all applicable subdivision and zoning approvals, and any required water-withdrawal or wastewater-discharge authorizations. DEP does not issue permits on a rolling basis and cannot issue them until all necessary applications have been received and reviewed. These applications are excluded from PAyback and the Permit Decision Guarantee. Schedule the complete DEP permit package and its prerequisites together. A nonsigner review track does not satisfy the separate executed-agreement requirement for tax-program certification described above. 4. Does your backup system meet the template emissions terms? Paragraph 6.b of the template provides for zero-emission energy generation and storage or backup generators with emissions no greater than those achieved by a Tier 4 or Tier 4 equivalent generator. It also calls for reduced runtime and limits backup generation to emergencies and limited testing and maintenance consistent with federal and state air requirements. Paragraph 3.z defines Tier 4 equivalent as an engine-generator set equipped with selective catalytic reduction (SCR) or equivalent nitrogen oxides (NOx) control, a diesel oxidation catalyst (DOC) or equivalent carbon monoxide (CO) control, and a diesel particulate filter (DPF) or equivalent particulate matter (PM) control. This template definition is not an EPA certification. A Tier 4-certified unit need not use that exact hardware; confirm its certification and permit-specific emission limits. For comparison, Virginia’s APG-576 provides presumptive controls for diesel engine-generator sets at data centers for applications submitted on or after July 1, 2026. It retains case-by-case best available control technology (BACT) review and specified exceptions for certain backup roles and existing-unit modifications. Its boilerplate does not cover Prevention of Significant Deterioration (PSD) or nonattainment permit review. It is a separate permitting framework, not Pennsylvania’s GRID standard. Compliance demonstrations depend on engine type, certification, configuration and permit conditions. For stationary compression-ignition engines, evaluate 40 CFR Part 60, Subpart IIII, including § 60.4211. For spark-ignition engines, evaluate Subpart JJJJ. Assess applicable Part 63, Subpart ZZZZ requirements or exemptions separately. Federal rules allow certification-based compliance for certain engines and require performance testing in other circumstances; permits can add requirements. EPA’s stationary-engine compliance guidance distinguishes these categories. Determine whether source testing is required for the actual fleet and permit. Assess source-wide potential emissions, relevant source-aggregation rules and any required air-quality modeling; Tier 4 performance alone does not establish that a project satisfies all air-permitting requirements. Plan maintenance and readiness testing within all governing federal, state, local, permit and agreement limits. Identify startup-triggered obligations before commissioning. 5. Have you planned at least three continuous air monitors? Paragraph 6.c of the template calls for at least three continuous air quality monitors at or near the site in DEP-approved locations. Collected data must be made available to the public and the relevant municipal and county governments. The template calls for an Air Monitor Plan at least [60] days before commercial operation; the bracketed value is subject to project-specific completion. The plan identifies proposed locations, parameters, installation schedule and data-publication arrangements. It provides for installation no later than 180 days after commercial operation begins. Confirm the final deadlines in the executed consent order. Select pollutants, measurement methods and locations for the site’s emissions, meteorology, nearby receptors and monitoring objectives, subject to DEP approval. For assessments involving ambient air standards, consider PM2.5, PM10 and nitrogen dioxide (NO2), with NO/NOx and meteorological measurements where useful. EPA’s ambient standards distinguish NO2 from total NOx. These are site-specific recommendations, not a fixed GRID monitoring package. SCR reduces NOx; controlled engines still warrant evaluation. Use a documented quality-assurance plan with appropriate calibration, data validation, completeness objectives and public-reporting procedures. Ambient monitoring, stack testing and dispersion modeling answer different questions; a monitoring network does not automatically satisfy a required permitting demonstration. Interpret measurements with background conditions and operating records before attributing concentrations to the facility. 6. Will your verified report be submitted at least 30 days before commercial operation? Paragraph 7.a calls for a third-party-verified report at least 30 days before commercial operation. It identifies material changes in the developer’s performance of obligations in paragraphs 4 through 6 and includes confirmations concerning ratepayer costs, community outreach, investment and jobs required to date, and environmental compliance status. Paragraph 7.b separately calls for an annual third-party-verified report by July 1. It documents continued compliance with the energy and community/workforce obligations in paragraphs 4 and 5, the amount and source of water used, and electricity use. It also requires certification that water use has not adversely affected the quantity or quality of water for other uses or users, including designated and existing uses under 25 Pa. Code Chapter 93. This annual report does not expressly repeat every paragraph 6 environmental obligation; those obligations still apply according to their terms. The verifier descriptions in paragraph 7 are bracketed for project-specific completion. Arrange appropriately qualified verification for the full report scope. Paragraphs 7.c and 7.d address inclusion of these reporting obligations in individual permit or authorization applications under the Air Pollution Control Act, Clean Streams Law and Dam Safety and Encroachments Act, and bar challenges to their inclusion as permit conditions. Paragraph 10 provides stipulated civil penalties in addition to other applicable remedies: generally $25,000 per day for each violation, with a separate bracketed rate of $25,000 to $100,000 per MW of rated capacity, per day, for each paragraph 4 energy-obligation violation. Confirm the rate and terms in the executed agreement. These are distinct from Act 21’s reporting penalty. 7. Is peak demand 10 MW or more? This reporting requirement includes existing operating facilities. Section 1812-B defines a qualifying data center as a facility, campus or interconnected array predominantly housing working servers or similar data storage systems with peak electric demand of at least 10 MW. Section 1813-B requires reports to DEP on the preceding calendar year's consumption by July 1, 2027, and each July 1 thereafter. The statutory report includes monthly energy and water consumption, peak-load energy use, maximum daily water demand, efficiency measures, generation, waste-heat recovery, projected demand and water-protection measures. Section 7.1083(c) of the executive order also specifies parent-company identity, monthly natural-gas consumption, air-protection measures, generation quantities and public-water-system agreements. Its peak-load energy metric uses MWh; the statute uses kWh. Use DEP’s required reporting format and units, reconciling conversions as needed. Section 1816-B provides a $10,000-per-day civil penalty for reporting noncompliance until submission. Proprietary information is protected; aggregated and anonymized data is public. 8. Are you counting on today's generator rules? Section 7.1085(a) directs DEP to examine whether generator regulations should require different technologies or emissions controls, more fully consider cumulative impacts at a facility or nearby facilities, or address generators deployed as grid resources. DEP must recommend any new regulations it identifies as necessary to address impacts unique to data center development and operation. The order sets no deadline for that examination and does not itself enact those future controls or authorize grid-service operation. Apply current engine classifications, operating restrictions and permit conditions. Evaluate any proposed grid-support operation against the specific federal and state rules, orders, permits and agreement terms that govern it. What Sustained Compliance Requires Build a schedule that distinguishes permit and initial-startup obligations from the template’s commercial-operation milestones. Confirm all deadlines, verification requirements and operating conditions in the executed agreement and permits before selecting equipment or committing to an operating schedule. Establish peak demand; evaluate the over-25 MW threshold for the special DEP review tracks, the at-least-10 MW reporting threshold and the separate tax-program certification requirement. Identify the air-permitting authority and schedule local approvals. Evaluate the full generator fleet, applicable engine rules, emissions and required permitting demonstrations. Select compliant equipment and plan source testing where required, along with maintenance and operating records. Develop a site-specific Air Monitor Plan for DEP review, including measurement methods, locations, quality assurance and public reporting. Coordinate the pre-operation report, annual COA report and statutory consumption report as distinct obligations. Alliance Technical Group provides data center generator and stack testing, environmental consulting, and ambient and fenceline monitoring. Our team can help scope the applicable permitting, testing and monitoring work early in project development.

Our third year of recognition highlights Alliance’s commitment to clear communication, meaningful connections, and a positive hiring experience. DECATUR, Alabama - September 16, 2026 — Alliance Technical Group has earned a 2026 Candidate Experience (CandE) Award, continuing its recognition for delivering a positive experience to job candidates throughout the hiring process. The CandE Benchmark Research and Awards Program, part of Survale, evaluates employers through company assessments and direct feedback from job candidates. The awards recognize organizations that provide a fair, transparent, and positive hiring experience. For Alliance, that means keeping candidates informed, respecting their time, and helping them understand the role and the company before making a career decision. This award reflects the work of our talent acquisition team, hiring managers, and employees who take part in the hiring process. We thank them for the care they bring to recruiting and the candidates whose feedback helps us improve. We’re proud to receive this recognition again and will continue using candidate feedback to strengthen our hiring process. Interested in joining Alliance? Explore our open positions.

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.