Overall Rating Silver - expired
Overall Score 47.35
Liaison Mike Evans
Submission Date Aug. 1, 2011
Executive Letter Download

STARS v1.0

Williams College
OP-18: Waste Diversion

Status Score Responsible Party
Complete 0.65 / 3.00 Stephanie Boyd
Former Director
Zilkha Center for Environmental Initiatives


Institution diverts materials from the landfill or incinerator by recycling, composting, reusing, donating, or re-selling. 

This credit does not include construction, demolition, electronic, hazardous, universal and non-regulated chemical waste, which are covered in OP Credit 19: Construction and Demolition Waste Diversion, OP Credit 20: Electronic Waste Recycling Program, and OP Credit 21: Hazardous Materials Management


This credit applies to all institutions


Institutions earn the maximum 3 points for this credit by diverting all of their waste from the landfill or incinerator. Incremental points are available based on the percentage of waste that is diverted. For example, an institution that diverts 50 percent of its waste would earn 1.5 points (half of the points available for this credit).


Report the most recent waste generation data available. 

Sampling and Data Standards

To the extent possible, include all waste that was generated by the institution (as the institution defines in the overall STARS institutional boundary) when reporting for this credit.  If data for the entire campus and/or entire year are not available, institutions may use a representative sample. 

Waste figures measured in volume may be converted to weight using the conversion factors provided by the U.S. Environmental Protection Agency and the College and University Recycling Council that are used for the RecycleMania competition

The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.