In LEED EB:O&M, MR credits 7-9, measurment and documentation of on-going consumable, durable goods, etc. is required during the performance period. My understanding is that this is to be maintained indefinitley i.e. solid waste tracking programs for the building are established during or before the performance period and are continued throughout the life of the building. Correct?

My other question is whether it is possible to use a volume metric for one credit and a weight metric for another in the same category, or do they all need to be consistent? Example: For MR C7: Solid Waste Management - Ongoing Consumables, we record the volumes of our on-going consumable waste and for MR C8: Solid Waste Management - Durable Goods, weight is used to document our durable good waste. Is that acceptable?

We are new to LEED, so any help or clarification is greatly appreciated!