Stantec

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.

Tetra Tech, Inc, based in Irvine, CA, is a global leader in providing innovative solutions through science, technology, and innovation to improve the quality of life for people around the world. Their diverse range of services includes environmental and climate change solutions, water supply management, energy projects, biodiversity conservation, and digital transformation for clients in government, business, and communities. With a commitment to sustainability and social responsibility, Tetra Tech aims to positively impact 1 billion lives by 2030 by creating resilient and sustainable communities. Through their expertise in engineering, science, and technology, they strive to address complex challenges and protect the environment while advancing global progress towards a more sustainable future. Generated from the website

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.