Additionally, those hired who may be assigned to federal projects will be subject to further drug testing, including screening for cannabinoids (THC/marijuana), in compliance with the Drug-Free Workplace Act of 1988 and other applicable federal regulations, which take precedence over California state and local laws. We are an award-winning California-based environmental consulting firm with 550+ professionals and more than 30 years of diverse experience serving clients in transportation, energy, water, infrastructure, private development, and government sectors.