We are working on a phased construction project for the (major) renovation of a small single-story City owned recreation center (+/- 1200 sf) and associated site improvements. Phase 1 involved all site work including new parking and vehicular access and walkways, etc. An ESC Plan was developed and implemented in accordance with local and NPDES requirements for Phase 1. Phase 2 is now about to commence and involves the renovation of the building itself. The local agency (who is also the owner/operator of the proposed community center) indicates than an ESC Plan is NOT required for Phase 2 to meet local and NPDES requirements. As the LEED project administrators, should we mandate an ESC Plan to satisfy SSp1 or are we ok with a certification from the City that one is not required? Obviously, our concern here is not satisfying a Prerequisite and blowing any shot at LEED certification. Thanks in advance for your collective wisdom.