RPS Group

GSI Environmental Inc in Irvine is a team of environmental experts dedicated to measuring, analyzing, and solving complex environmental problems. As recognized leaders in applied environmental research and subject matter experts, they provide innovative solutions for a wide range of environmental challenges. Generated from their website's infomation

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

Psomas is a consulting engineering firm that offers services in water resources, planning and entitlements, land surveying and mapping, construction management, environmental, geographic information systems, land development engineering and transportation to private sector, municipal/local agency, state and regional agency and federal agency clients. Some of the markets that the company provides services to include the land development market serving communities, commercial and retail properties, industrial, entertainment and education; transportation market, including airports, roadways, ports and rails; water market, such as water and wastewater facilities and watershed management; and the government markets. The company offers a variety of services, including civil engineering, construction management, information technology consulting, American Land Title Association coordination, natural resources, planning and entitlements, surveying and mapping, transportation engineering and water infrastructure. Psomas is headquartered in Los Angeles, with other locations in Arizona, Utah and Colorado.