Should mineral-based finish flooring products (without any integral organic-based coatings and sealants) and unfinished/untreated solid wood flooring be documented on the IEQc4.3 LEED Online form, even though they are exempt from certification requirement

According to LEED Interpretation #10267, the project team should mark the form to indicate an Alternative Compliance Path, and include a narrative with a statement that the project is applying the April 14, 2010 addenda, as well as the manufacturer and specific product description of the product claiming the exemption. Manufacturer documentation for each product claiming an exemption is not required.

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.