Construction of a 40-unit apartment complex with a 1,000 square-foot community building. Plus an additional 8 units in a future phase, bringing the total to 48 units. Site was developed with Glass Cullet (made from crushed bottles diverted from municipal waste) as a 100% substitute fill material to construct a slab-on-grade foundation capillary break, and for waterline pipe zone bedding. Approval of the alternative material required endorsement of geotechnical engineer and warrant by subcontractor of product quality, using manufacturer supplied 3rd-party product testing data. Glass cullet provided a low-cost, highly workable, permeable and structurally stable (equal or better) alternative material that is also clean and safe for workers and the environment.