Drafting an EIR or preparing a negative declaration necessarily involves some degree of forecasting. While foreseeing the unforeseeable is not possible, an agency must use its best efforts to find out and disclose all that it reasonably can.
Cal. Code Regs. Tit. 14, § 15144
Note: Authority cited: Section 21083, Public Resources Code. Reference: Sections 21003, 21061 and 21100, Public Resources Code.