What if a food item is produced nearby (say at a processing plant) but the ingredients aren’t sourced locally. Does that count towards the 100-mile regional criteria?

No, the food must be either harvested, or harvested and processed (if applicable) within 100 miles to count. Said differently, foods that are processed within 100 miles must also be harvested within 100 miles to count.

We have several tenants in our building. Do we have to track food purchases from all of them? What if they won't give us their purchasing data?

Yes, tenant purchases must be included in this credit, much like the other LEED-EBOM Materials and Resources credits that cover purchasing. However, the EBOM 2009 rating system offers a 10% floor area exemption option for multitenant buildings. In instances where tenant data cannot be gathered, or the EBOM applicant does not have control over tenant operational practices, the project team may exclude up to 10% of the building’s gross floor area for any credit. See the Documentation Toolkit as well as page xxii of the Reference Guide for further information.

Does being a GS-42 Certified Provider assist in meeting the prerequisite and associated credit requirements?

Unfortunately there is no official streamlined option for contracting with a GS-42 certified provider to simplify the LEED documentation, however the service provider is probably already doing most of what LEED requires for the prerequisite and associated credit requirements. That said, if you are working with a GS-42 certified provided, acquiring the necessary documentation will be significantly easier than working with a vendor who is new to green cleaning.

Our project consists of a building with multiple tenants. The core areas are maintained by building management but the tenants are responsible for their own cleaning. Can I still achieve the prerequisite?

Yes. As stated in the Step-By-Step Guidance in the LEED Reference Guide, the scope of the policy needs to cover only the portion of the building and site under the building management’s control. That said, teams should consider sharing the green cleaning program information with tenants and encourage them to adopt best practices in their spaces.