Tetra Tech

Laboratory Data Consultants (LDC) is an environmental chemistry QA/QC consulting firm, established in 1991, that specializes in third-party data validation and a suite of services tailored to the environmental industry. The company is recognized for its custom software products, data management services, and comprehensive training offerings, all designed to enhance the efficiency and reliability of laboratory operations. Headquartered in Carlsbad, CA, LDC boasts a state-of-the-art training facility and a diverse team of experts providing consulting services, including laboratory audits and expert witness support. With nearly three decades of experience and a commitment to outstanding client service, LDC continues to lead the way in data validation and usability assessments across a variety of environmental projects. Generated from the website

Project Design Consultants has worked on projects, such as PETCO Park, Arizona Cardinals Stadium, SeaWorld San Diego and the Chula Vista Civic Center. Project Design Consultants is a company that studies, plans, surveys, designs and engineers planned communities, commercial and urban infill projects and public infrastructure. The firm also provides landscape architecture, environmental analysis documentation, permit processing and civil, traffic and transportation engineering. Project Design Consultants also offer water and wastewater engineering, public facilities design, surveying, photogrammetry, mapping, geographic information systems and right-of-way acquisition. The company provides its services for public and private sector clients. Project Design Consultants is headquartered in San Diego with additional locations in Phoenix and the California communities of Temecula and Bakersfield.