Environmental Impacts

While in many ways EIRs resemble transportation impact analyses, there are additional considerations taken with EIRs. EIRs are subject to a great deal more public scrutiny, and therefore, they often include extensive analysis of potential neighborhood cut-through traffic, parking spillover, or other impacts. Also, they require formal responses to comments with extensive documentation of conclusions. In addition, EIRs typically include much more detailed mitigation plans and programs because all transportation impacts must be mitigated or subject to overriding considerations. Often EIRs are done at the program level, rather than project level, and they resemble long-range areawide plans.

Hexagon staff has extensive experience with program-level EIRs and is capable of handling very general project descriptions. Hexagon staff is also very familiar with the various steps in the planning process that are subject to EIRs: general plan amendments, re-zonings, and specific project development permits. Hexagon’s capabilities include all the transportation analysis techniques that are necessary for various types of EIRs that include travel demand forecasting, traffic engineering, traffic operations analysis, bicycle/pedestrian/transit analysis, and parking demand analysis. 

Transportation Impact Studies in California are evolving with CEQA requirements under SB 743, specifically to provide an alternative to Level of Service for evaluating transportation impacts. Measurements of transportation impacts will soon be defined by vehicle miles traveled (VMT), which will account for impacts beyond traffic congestion including air quality, noise, and safety.