Established in 1991 and with offices in San Diego, Sacramento, Placer, Orange, and Riverside counties, HELIX Environmental Pl ... anning develops and implements innovative environmental compliance and sustainable design services throughout California and the western United States. HELIX has extensive experience helping public and private clients comply with environmental laws and regulations, manage natural and cultural resources, and design and construct sustainable projects. Our responsive, high-quality service enables clients to achieve their goals while benefiting the community and the environment. Many clients, as a measure of their confidence, bring their largest, most sensitive, and controversial projects to HELIX. read more