Does section 21166 require a subsequent EIR if the original EIR has not been certified as complete?

9 The court didn't distinguish between the propriety of requiring a subsequent EIR and the legal sufficiency of an original EIR. We question the applicability of section 21166 where the original EIR has not been finally certified as complete. (See Stevens v. City of Glendale, supra, 125 Cal.App.3d at p. 999, 178 Cal.Rptr. 367 [where certification of EIR was vacated, it would be "premature" to require a supplemental EIR]; 21166, subd. (c) [subsequent EIR may be prepared where information was not available when the original EIR was "certified as complete"].)