Parsons Engineering Science

Tetra Tech is one of the leading providers of specialized management consulting and technical services. The company focuses on the areas of resource management, infrastructure, and communications. Tetra Tech was founded to provide engineering services related to waterways, harbors and coastal areas. The company has since increased the size and scope of its business and expanded its service offerings through a series of strategic acquisitions and internal growth. Tetra Tech provides environmental services, water and wastewater management, infrastructure services, security design and outsourced technical services. The company had nearly 7,500 employees located in more than 250 offices throughout the world. Tetra Tech was founded in 1966 and is based in Pasadena, Calif.

AECOM is an international professional technical services company providing consulting, design, program and construction management and operations and maintenance support to the transportation, environmental and building industries. The company serves both government and private clients. AECOM also provides technical support, international development assistance, and mining and power services. AECOM is headquartered in Los Angeles and operates additional offices throughout the United States., Canada, Asia, the Middle East, Africa, Australia and Europe.

Founded in 1969, The Englekirk Companies operates three specialized entities, including Englekirk & Sabol Consulting Structural Engineers, Englekirk Systems Development and Englekirk Partners Consulting Structural Engineers. It serves in California and design structures throughout the United States and the Pacific Rim. The Englekirk Companies has completed several projects, such as hotels, mixed-use facilities, office buildings, retail centers, parking structures, entertainment and institutional buildings. Its projects include Gaslamp, Dole Wellness Center, Molokai Ranch and Marriott Courtyard. The Englekirk Companies projects include Robert E. Englekirk, Cheng-Ming Lin, Thomas A. Sabol, Nagi Abo-Shadi and Vladimir Volnyy. It is the recipient of the Presidential Honoree Design Award from American Institute of Architects Los Angeles Chapter.