Strategic Environmental & Energy Resources, Inc. provides clean-technologies, waste management innovations, and related services in the United States and internationally. The firm operates in three segments: Industrial Cleaning, Environmental Solutions, and Solid Waste. It offers general industrial cleaning and waste management services to various industry sectors, primarily upstream oil and gas production, and downstream refineries. The company also designs and sells H2SPlus and OdorFilter dry scrubber system solutions for management of hydrogen sulfide in biogas, landfill gas, and petroleum processing operations; and develops waste destruction technology using pyrolytic heating process combined with non-thermal plasma assisted oxidation. In addition, it develops renewable natural gas projects; and chemical absorbents and catalysts that enhance the capability of biogas produced from landfill, wastewater treatment, and agricultural digester operations. The company was founded by Joseph John Combs III on February 13, 2002 and is headquartered in Broomfield, CO.