CA SB1326

Expands the definition of "tribal cultural resources" under CEQA to include sites identified by the Native American Heritage Commission as sacred places, resources in local tribal registers, and sanctified cemeteries or burial areas of California Native American tribes

Requires lead agencies to adopt mitigation measures when projects may cause substantial adverse change to tribal cultural resources, strengthening language from permissive ("may be considered") to mandatory ("shall adopt")

Mandates that avoidance and preservation in place must be considered when requested by a consulting tribe, and if deemed infeasible, the lead agency must document the basis with substantial evidence

Authorizes consulting tribes to identify culturally appropriate mitigation measures, which lead agencies must consider and incorporate to the extent feasible

Requires lead agencies that decline to use tribal methods, standards, or traditional knowledge in identifying or mitigating impacts to tribal cultural resources to explain and justify that decision with substantial evidence in environmental documents