At Green Rock, we are committed to providing effective and efficient sustainability services that are a cut above the industry standard. From environmental industry veterans with decades of experience behind them to business development and project management savants hungry to revamp outmoded systems, our dynamic team is at the ready to understand your unique challenges, negotiate the best option for your bottom line, and deliver comprehensive and economic solutions.


As a team, we believe in the long game priding ourselves on building strong, lasting relationships with our affiliates and clients across the country.


Interested in learning more about what makes us different? Get to know Green Rock.

Trey Smith | President

Trey Smith has provided waste services in the environmental industry for more than 20 years and counting. Trey’s core competency is his understanding of the markets and ability to deliver strategic, sustainable solutions to customers across the spectrum that are dealing with all facets of waste issues.


Trey has extensive experience in hazardous and non-hazardous waste management and logistics, reuse, recycling and waste-to-energy, waste treatment, remediation and industrial services, abatement and demolition, exploration and production waste, and emergency and disaster response. His record of providing sustainable, cost-effective solutions includes many successful projects that required meeting challenges ranging from marine transfer to brownfields to waste-by-rail to wetland restoration.


Prior to starting Green Rock in 2016, Trey worked with Green Group Holdings and covered projects across the United States in all aspects of waste management to include coal ash transportation and disposal for the utilities in the Southeast to oilfield waste in the Powder River Basin, Texas and the Marcelles, to long-haul projects for municipal solid waste and contaminated soils out of the Northeast. Trey continues to consult on behalf of Green Group Holdings.


From 1996 to 2012, Trey worked with Republic Services and was instrumental in the development of Republic Services’ special waste program, where he held the position of Director of Special Waste for the Eastern U.S. and had responsibilities in 20 landfill markets from Pennsylvania to Florida.


Trey earned a BS from The Citadel and a Masters in Environmental Studies from the University of Charleston and The Medical University of South Carolina.

Bob Shepard | Vice President

Bob Shepard is a 40-year veteran of the environmental industry with significant expertise in all aspects of solid waste management, including collection, disposal, and recycling.


Bob served as Vice President and Chief Operating Officer of Fennell Container Co. Inc. and its affiliate companies from 1979 until its sale in 1995 to Republic Services Inc. Bob became Area President of the Carolinas and then was promoted to Regional Vice President of the Southern Region including the Carolinas, Georgia, and Florida.

After retiring from Republic in 2010, Bob is currently invested in numerous environmental service companies and leverages his experience to help grow these businesses in the waste and recycling service industries.


A Charleston native, Bob has served on numerous Boards and Foundations including the National Solid Waste Management Association. Bob is a graduate of Clemson University and a past Chairman of the Clemson University Board of Visitors. 

Raymond Lightfoot | Director of Business Development

Raymond serves as the Director of Business Development with Green Rock and has been with the company since 2017.


His experience includes project management, brownfield redevelopments, waste disposal & logistics, budget management, abatement and demolition, and emergency/disaster response. 


Notable experiences include the management of all hazardous and nonhazardous waste from recent power plant abatement & demolition projects (TVA, Duke Energy, GA Power, LGE/KU, Consumers Energy, IPL), truck management of coal combustion residuals (CCR), EPA Superfund remediation projects, and transporting waste by rail. 


Raymond is a graduate of the University of Kentucky and currently resides on Johns Island, South Carolina with his wife and two children. He is also an NCAA Men’s college basketball official. 

Heather McKay | Controller

Mom of two beautiful girls and proud to call Mount Pleasant, SC home for nine years and counting, Heather keeps the Green Rock team in check as our Office Manager.


As a former Director of Administration and Accounting Coordinator, Heather brings over a decade of experience to the Green Rock team and its clients in budget preparation, customer service support, sales oversight, invoicing and inventory control.


With a BS in Accounting from Grand Canyon University, Heather helps the Green Rock team mind its Ps and Qs in client support, detailed project reporting, corporate documentation, proposals, business development and more.

Her goal is to ensure that our clients enjoy prompt responses and premier support. 


Pete Bleignier | Senior Business Manager - Charleston, SC

In his role as Senior Business Manager for Green Rock, Pete Bleignier identifies sustainability objectives and priorities before applying adaptable approaches to waste management and ensuring deliverables for our clients across the country. 


Both robust and dynamic, Pete brings a background in program management specializing in waste reductions and diversion, zero landfill initiatives, beneficial reuse and customer service to Green Rock customers. 


Before joining Green Rock, he worked with Univar Solutions and Haas Group International as well as serving in the United State Air Force. 


Over the course of his career, Pete managed full-spectrum waste management programs for several Fortune 500 industrial sites, identified and converted more than 6K tons of manufacturing by-product from disposal into beneficial reuse programs along with developing, transitioning and managing multiple major industrial locations spanning a traditional landfill program to zero waste. 


Craig Fisk | Senior Business Manager - Atlanta, GA

With more than three decorated decades in the environmental industry, Craig Fisk joined Green Rock in 2020 as a Senior Business Manager bringing his aptitude for business relationships, meaningful connections and client advocacy. 

Kicking off his environmental career in 1987 as a sales representative for Safety-Kleen, Craig rose the business development ranks with charges that included managing both verticals and territories for assignments across Knoxville, TN and Atlanta, GA. In 2010 he joined Winter Environmental as a Business Development Manager for the Remediation Group before moving to Clean Harbors as a Senior Account Manager in 2016. 

During his tenure with Clean Harbors, Craig was responsible for $1.5M in new business each year - consistently exceeding benchmarks for the year prior by 200 - 300%. 

For each prospect and client, Craig works to earn trust and ensure a comprehensive understanding of Green Rock’s capability to deliver invaluable service and expertise.  


Fred G. Hunziker | Senior Business Manager - West Region

Fred G. Hunziker has 30+ years of experience in the waste industry in which he has accumulated extensive knowledge of markets across the Western United States and partnered with many clients to provide the most effective solutions to meet complex environmental needs.

Known for his resourceful, hands-on approach, Fred combines strategy, insight, process efficiency and natural leadership to optimize results and ensure both beneficial and measurable outcomes for his clients.  

Prior to joining Green Rock, Fred led business development initiatives for Waste Solutions Group and San Francisco Bay Railroad. In this capacity, he worked with leading developers, consultants, municipalities, and contractors to resolve challenging projects in the most cost-effective manner.

From 1998 to 2013, he served Republic Services as the Director of Special Waste Sales in the Western US where he was responsible for numerous landfill markets in California, Oregon, Washington and Utah.  

A proud graduate of California State University, Fresno, Fred earned a BS in Finance on a full-ride wrestling scholarship. He currently resides in the San Francisco Bay Area.

Travis Shepard | Industrial Account Executive

Travis Shepard has spent nearly a decade in the waste industry focusing on the administrative, operational, and sales fields. His expertise involves optimizing the logistics involved in transportation and disposal of solid waste streams.


Following graduation from Clemson University in 2009, he went to work in operations for Republic Services. From 2010 until 2013 he learned the intricacies of collection, hauling, and disposal of the waste industry.


After finishing graduate school from Keller School of Business with a Masters in Information Systems Management in 2015; he went back to work for Republic Services in sales with a focus on account retention and acquisition. His duties involved maintaining relationships and managing more than 800 accounts, while also growing the Republic footprint in South Carolina. He focused on municipal solid waste (MSW), construction and demolition (C&D) debris, and industrial waste streams accounts for both commercial and industrial businesses.


In joining Green Rock Strategies, Travis will bring attention to Green Rock’s goals of delivering sustainable options to industries for recycling, disposal, and renewable energy.