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We assist clients through a combination of consulting support, technology-based solutions, professional training, and staffing services.

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Eddie Al-Rayes

Chelsea Hardwick on September 19, 2025

Eddie Al-Rayes is Regional Director for Trinity’s California and Phoenix operations and is based in the Sacramento, California office. Eddie is involved with assisting the regulated community in the region with a variety of environmental permitting and compliance issues such as air quality permitting, air emissions controls, air quality dispersion modeling and impacts, implementation of digital compliance management tools, due diligence in support of mergers and acquisitions, agency negotiations, and environmental auditing. Since the late 1990s, Eddie has supported clients across the West in EPA Regions 6, 8, and 9 and in various industry sectors such as petroleum refining, mining and metallic minerals processing, steel manufacturing, semiconductor, and electrical utilities. Eddie has also instructed professional training courses on state and federal air regulations in Texas and Arizona.
Eddie holds a B.E. degree in Civil and Environmental Engineering from the American University of Beirut in Lebanon and an M.S. degree in Environmental and Water Resources Engineering from the University of Texas at Austin.

Nicole Saniti

Chelsea Hardwick on September 19, 2025

Nicole Saniti, PE, is based in Trinity’s Washington, DC office and serves as a Regional Director for Trinity’s Appalachian region. Since 2005, she has been dedicated to delivering top-notch environmental consulting services to a diverse array of clients throughout the Southeast and Mid-Atlantic. Her extensive professional background spans various industries, including chemical, power generation, automotive assembly, building products, glass manufacturing, and other general manufacturing sectors.
Nicole’s expertise lies in environmental project strategy development and environmental project management. She has significant experience in air quality permitting, including Prevention of Significant Deterioration (PSD), Plantwide Applicability Limits (PAL), state New Source Review (NSR), Title V operating permits, and state operating permits. She also guides clients through regulatory applicability analyses, New Source Performance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAP) compliance, air quality compliance reporting, dispersion modeling, emission inventories, and stack test facilitation. In addition to her air quality expertise, Nicole supports Emergency Planning and Community Right-to-Know Act (EPCRA) reporting, Spill Prevention, Control, and Countermeasure (SPCC)/ Stormwater Pollution Prevention Plan (SWPPP) development, and environmental audits.
Throughout her career, Nicole has been a strategic advisor to clients, devising permitting and regulatory strategies that align environmental compliance with business needs. Her success as a liaison between clients and state and local agency personnel have yielded flexible permits tailored to optimize facility operations. Further, Nicole collaborates closely with senior client leadership to navigate the dynamic landscape of regulatory changes, ensuring ongoing environmental compliance.
Nicole has earned a B.S. in Chemical Engineering from the University of Rochester and an M.B.A from Wake Forest University. She is a registered Professional Engineer in North Carolina, and South Carolina.

Melissa Hillman

Chelsea Hardwick on September 19, 2025

As a Regional Director for Trinity’s Pacific Northwest Region, Melissa Hillman is based in Trinity’s Portland, Oregon office and has more than 17 years of experience in environmental consulting, specializing primarily in large strategic account management and air quality. Melissa oversees offices located in Boise, Idaho; Portland, Oregon; and Seattle, Washington. The majority of Melissa’s experience involves growing corporate accounts through effective project management involving small to large environmental projects. Melissa has experience working in numerous states including Alaska, Arizona, California, Idaho, Hawaii, Louisiana, Michigan, Mississippi, Montana, Nevada, Oregon, South Dakota, Texas, Utah, and Washington.

Melissa specializes in a number of industrial sectors including data centers, electrical generation, chemical/fertilizer production, pulp and paper production, and cement manufacturing. Her area of expertise includes local/state/federal air quality permitting, air quality compliance, environmental audits, air emissions inventories, and litigation support. She has taught regional-specific air quality training courses in California and Nevada.

Melissa earned her M.S. degree in Chemical Engineering from the University of California at Davis. She earned her Bachelor’s of Engineering degree in Chemical Engineering from Florida State University.