Orinoco Petroleum -- Environmental Services Inc. of Norman is among the top diversity businesses in Oklahoma, according to a list distributed by DiversityBusiness.com, a multicultural business Web site.

The company's president is Tomas Diaz.

The Hispanic American owned company provides environmental services in the areas of subsurface investigations, sampling and laboratory analyses, phase I and II environmental site assessments, storm water pollution prevention plans (SWP3) and removal, installation and upgrade of fuel storage tanks.
They also provide remediation services such as pneumatic free product removal systems, lead-based paint abatement, air sparging, soil vapor extraction, dual phase extraction, air stripping, carbon adsorption and soil excavation, treatment, transportation and disposal.