Final answer:
Only excavated stone that has been pulverized for use as aggregate qualifies as a recycled material. The other options listed - maintained landscaping, in-place asphalt, and excavated soil used as backfill - are examples of reuse rather than recycling, unless the soil is processed to improve its properties.
Step-by-step explanation:
The question pertains to identifying which of the listed options would qualify as recycled materials for project teams pursuing an environmental goal, such as RA1.2 Use Recycled Materials. To be considered recycled, the materials must be processed to make them suitable for reuse, which is typically different from their original use. Specifically:
- Excavated stone pulverized to be used as aggregate is a classic example of recycling construction material.
- Landscaping maintained on the project site doesn't constitute recycling as it's more akin to preservation or maintenance.
- Asphalt left in place on a road repair project is not recycled; it is reused in its original form and location.
- Excavated soil used as backfill is another form of reuse, as the soil is only being relocated, not processed into a new form. However, if the soil is processed to improve its properties for use as backfill, it could be considered recycling.
Therefore, out of the options listed, only the pulverized stone to be used as aggregate qualifies as a recycled material in the context of the RA1.2 Use Recycled Materials goal.