helix environmental planning california logo

Sunrise Powerlink

The Sunrise Powerlink project is an approximately 117-mile-long project that includes a 500 kV transmission line from the Imperial Valley Substation to a new substation southeast of Alpine, and a 230 kV transmission line with both overhead and underground components...
Tapestry Specific Plan

Tapestry Specific Plan

HELIX Environmental Planning (HELIX) prepared the Environmental Impact Report (EIR) and air quality, biological resources, GHG, and noise technical studies, as well as managed the preparation of cultural resources, paleontological resources, and traffic technical...