Fruit and vegetable trimmings from the C-Street prep kitchen and the Arrupe Jesuit residence and coffee grounds from all campus cafes are collected. Custodians transport the food waste to the recycling and composting yard.

Food Waste Collection

Feedstocks are pre-consumer food waste and chipped landscaping waste from campus grounds and local landscaping companies.

Feedstocks

The food waste is mixed with chipped landscaping waste to achieve the proper balance of carbon and nitrogen.

1. Food waste and chipped landscaping waste is put into the mixer.

2. Inside the mixer

3. Mixed food waste and landscaping waste coming out of the mixer.

Mixing

Once a batch of compost is loaded into the composting facility, it stays there until the entire bay has been filled. The material in a filled bay composts for 1-2 months, then is moved to the curing bay to cure for an additional 1-2 months.

Composting & Curing

When a new batch of compost is complete, the Grounds Crew applies it on the planting beds as a mulch to improve soil quality.

Finished Compost

Construction Dec. 2002- Aug. 2003

Total Cost = $182,000

Design • 2 ‘hot’ composting bays + 1 curing bay • Each bay holds 60 cubic yards • Leachate collection holds 70 gallons • Biofilter uses rough chipped wood to contain

odors • Negatively forced aeration • Static pile