A principal engineer leads every engagement at SOLA Environmental. Air permitting, dispersion modeling, and multi-media compliance for the country's most demanding industrial projects.
At a large firm, your project may get assigned to whoever's available. At SOLA, it's led by a principal engineer on every engagement.Brad Arnold, Founder & Managing Principal
Every engagement follows the same discipline, so you always know what's happening, what's next, and who's accountable.
We map every federal, state, and local requirement that touches your project before a single form is filed, so your strategy is built on the full picture.
We develop practical compliance strategies built around how your facility actually operates. You get the fastest defensible pathway, with timelines you can hold us to.
We implement, manage the agency relationship, and maintain the solution long after approval. One principal-led team, start to finish.
Full coverage of the programs that regulate you, with deep technical specialties where the stakes are highest.
One team across every program that regulates your operation. We assess obligations, find exposure before regulators do, and turn it into an actionable plan.
Specialized depth within the practice
From minor source to Title V and PSD, we find the fastest defensible pathway and manage it until the permit is in hand.
ExploreTitle V program management, compliance calendars, reporting, and audits that keep you ahead of every deadline.
ExploreDefensible AERMOD analyses and technical reports built to stand up to regulatory review.
ExploreNPDES, stormwater, and discharge authorizations, with complete documentation managed to approval.
ExploreCustom frameworks, documentation, and training that keep organizations ahead of changing regulations.
ExploreA global hyperscale operator needed air permits and dispersion modeling for a multi-site data center buildout, on schedules that left no room for regulatory delay. SOLA prepared the applications and modeling, then worked side by side with the state agency's permitting modeler to establish the soundest treatment of intermittent emergency generators, keeping overly conservative assumptions from stalling the project.
A major steel manufacturing facility in Alabama was undergoing a significant capacity expansion. SOLA modeled emissions from multiple new and modified sources using EPA's AERMOD system, incorporating site-specific meteorological data, complex terrain features, and nearby source interactions, then evaluated impacts against all applicable NAAQS and PSD increments.
Plant leadership needed to see actual emissions against permit limits at a glance. SOLA rebuilt the emissions calculation workbook and layered in graphical tracking, turning raw data into a daily management tool.
A specialty chemical manufacturer needed programmatic Tier II / SARA 312 reporting across sites in more than ten states. SOLA built a template-driven process with chemical grouping guidance that delivers accurate reports on time, every year.
After a merger, this company had 15+ U.S. facilities and no unified compliance structure. SOLA assessed every site, standardized processes, consolidated calendars, and built a framework that scales with future acquisitions.
Case studies are anonymized to protect client confidentiality. Client references available on request.
High-temperature processes and major emission sources demand serious air permitting muscle. That's our core.
Hyperscale builds live at the intersection of speed, generator permitting, and regulatory oversight. We keep them moving.
Coatings, surface treatment, and assembly are VOC-heavy processes with layered environmental requirements.
Environmental programs that align with continuous production schedules and strict operational controls.
Complex processes, unique emission profiles, and evolving standards. We handle all of it.
Energy, manufacturing, processing, and infrastructure. If it's regulated, we've probably permitted it.
150+ years of combined experience. Chemical and environmental engineers, plus a Certified Consulting Meteorologist, from Auburn, LSU, Vanderbilt, Johns Hopkins, Penn State, and more.

Founded SOLA in 2019 after 12 years in environmental consulting. Air permitting, compliance strategy, regulatory analysis, and dispersion modeling.

25+ years of air quality modeling across the United States. A Certified Consulting Meteorologist specializing in AERMOD and CALPUFF for NSR permitting, SIP development, and NEPA reviews.

10+ years across oil & gas, LNG, power, chemicals, steel, and data centers. Title V permitting, risk analysis, site selection, and agency coordination.
Tell us where your project stands. Within one business day, a principal engineer, not a sales rep, will walk you through your pathway, your timeline, and your risk.
Prefer to talk now? (844) 211-5575