Executive Management & Board of Directors

J. John Combs III

President & CEO

Simon Tang

Director (Vice Chairman), Emeritus

Scott Yenzer


Christopher Dieterich

Secretary and Director

Clark Knopik

Interim Chief Financial Officer

Strategic Environmental & Energy Resources

Company Overview

Strategic Environmental & Energy Resources (SEER) provides environmental, renewable fuels and industrial waste stream management services to oil producers and refiners, railcar operators, industrial and manufacturing companies, medical facilities, government agencies, universities and environmental consulting firms. Our portfolio of technology-based services helps customers solve problems related to hazardous waste streams, odors and emissions, and other undesirable consequences of industrial operations and waste creation. Our customers rely on us to manage initiatives ranging from improving operating efficiencies to EPA compliance to creation of renewable fuels. Our highly skilled personnel are equipped with the most modern tools of their trade, including proprietary, patent-pending technologies.

Our Satisfied


SEER is a trusted provider of environmental services to a wide range of customers in a variety of business segments. Customer satisfaction is our hallmark and long-standing customer relationships are a testament to our commitment to understanding our customers’ needs and delivering our solutions in a timely, cost effective manner. Below is a representative sampling of SEER customers past and present.