Kelvin R. Collard

GSE Environmental, Inc. manufactures and markets geosynthetic lining products and services. Its products include geomembranes, geosynthetic clay liners, geogrids, and liner integrity monitoring system. The company was founded in 1972 and is headquartered in Houston, TX.

HPC Industrial engages in the provision of industrial cleaning services. It offers hydroblasting, hydrocutting, chemical cleaning, wet and dry vacuum services, hydro excavation, turbine, solids separation, tank services, sewer system, catalyst, custom engineered solutions, paint booth management, confined space, refractory removal and jet pump replacement, industrial waste, downstream, upstream, utilities, speciality mechanical and turnaround services. The company was founded in 1977 and is headquartered in Deer Park, TX.

Equistar Chemicals LP produces chemicals. It offers polypropylene, ethylene, propylene and polyethylene, ethylene oxide, ethylene glycol, specialty polymers, and polymeric powder. The company was founded in December 1997 and is headquartered in Houston, TX.

The Brock Group, Inc. provides engineering and maintenance services. The firm offers scaffolding and work access, insulation, coatings and linings, fireproofing, and general facility maintenance. The firm's solutions include capital projects, bundled solutions, skilled craft maintenance and turnarounds. The company was founded in 1947 and is headquartered in Houston, TX.