(a) If preparing a negative declaration, mitigated negative declaration or EIR on the compliance project the lead agency for the compliance project shall, to the greatest extent feasible, use the environmental analysis prepared pursuant to Section 15187. The use of numerical averages or ranges in the environmental analysis prepared under Section 15187 does not relieve the lead agency on the compliance project from its obligation to identify and evaluate the environmental effects of the project.

(b) Where the lead agency determines that an EIR is required for the compliance project, the EIR need address only the project-specific issues or other issues that were not discussed in sufficient detail in the environmental analysis prepared under Section 15187. The mitigation measures imposed by the lead agency shall be limited to addressing the significant effects on the environment of the compliance project. The discussion of alternatives shall be limited to a discussion of alternative means of compliance, if any, with the rule or regulation.