Completing PIF1 when you have an exception to providing meters

We are working on a municipal water processing plant. A huge amount of water courses through the plant, while only a tiny fraction is used by the plumbing fixtures, and similarly, a process energy exceeds building systems energy by perhaps 1000:1. GBCI has indicated that we do not need to add meters to separate these loads. The only utility meters are for the whole site ; multiple industrial facilities. So, when we are filling out MRP6, which of the 3 reporting options do we choose, and how will the facility report, or would they not report? Under these circumstances, is the 1 point for reporting in EAc5 possible to get?