The University of Illinois Urbana-Champaign (U. of I.) Facilities & Services (F&S) Waste Management department recently released the results of a campus building waste characterization and opportunity assessment conducted with assistance from the ISTC Technical Assistance Program (TAP). This project was the latest example of collaboration between the two units on reducing waste and improving sustainable materials management on campus since the development of the original Illinois Climate Action Plan (iCAP).
Beginning in 2014, shortly after the inception of its Zero Waste Illinois program, TAP conducted its first university campus waste audit in the form of a two-phase project for U. of I., examining the types and amounts of waste generated in eight campus buildings, as well as the availability and location of waste and recycling collection bins. That study also included a survey of building occupants to gauge knowledge of current programs, gaps in service, and overall satisfaction with the campus recycling program. With this data, TAP made recommendations for waste reduction and diversion at the campus and individual building levels. The TAP zero waste team went on to conduct similar waste characterization studies for other institutes of higher learning, industrial clients, local governments, small businesses, and school districts in Illinois and beyond, as well as contributing to statewide systemic change through efforts like the Farm to Food Bank feasibility study and pilot projects. In 2019, TAP assessed indoor solid waste and recycling collection infrastructure for U. of I., leading to the initial deployment of branded three-bin collection stations for waste and recyclables in high-traffic campus locations. F&S continues to deploy those newer three-bin stations as funding permits, as part of ongoing progress toward iCAP zero waste goals.
In the fall of 2021, TAP, F&S, and other campus stakeholders began discussion of a new round of campus building waste audits. Plans were paused until after the hiring of Daphne Hulse, the first full-time U. of I. Zero Waste Coordinator, in fall 2022, to ensure the availability of dedicated staff to address waste audit results and recommendations. A spring 2023 grant from the U. of I. Student Sustainability Committee (SSC) supplemented available F&S funds to secure TAP services for waste audits of eight high-usage facilities in October 2023.
Due to the size and volume of waste and recycling generated on campus, sorting all material was not feasible. Thus, TAP and F&S used an “activity zone” approach, developed by the TAP zero waste team after their work on the previous U. of I. campus audits. This involved selecting a representative set of buildings classified according to their main functions and services. Waste audit data from those representative buildings was used to formulate recommendations for waste reduction and improving the quantity and quality of collected recyclables. Those recommendations for improvement can then be applied to other buildings that fall within the same activity zone categorization. For this waste audit, activity zones and their respective buildings included:
- Academic: Business Instructional Facility (BIF) & Campus Instructional Facility (CIF)
- Academic + Laboratory: Roger Adams Laboratory (RAL) & Noyes Laboratory
- Multi-Activity: Illini Union & Activities & Recreation Center (ARC)
- Student Living: Lincoln Avenue Residence Halls & Allen Residence Hall
TAP conducted walkthroughs of study buildings to assess current conditions and infrastructure, discuss waste and recycling challenges and successes with facility managers and other key personnel, and determine the best method for sample collection during the waste audits. The audits involved the collection of samples from trash (landfill-bound) and recycling streams from each of the selected buildings, which were then hand-sorted by TAP staff and volunteers into pre-determined categories defined in conjunction with F&S waste management staff. Following the waste audits, TAP held four focus group sessions (one per activity zone) to obtain input from campus community members (including students, faculty, and staff). Stakeholder engagement helped to gauge expectations, barriers, and sources of confusion, as well as garner suggestions for ways to reduce waste and improve collection of recyclables for the buildings included in the study. An online form was made available for submission of written feedback from those unable to attend focus group sessions and to allow session participants to submit any additional comments and suggestions.
In addition to presenting methodologies and findings, the audit report outlines current waste and recycling management practices across campus and within the examined activity zones. This includes detailed descriptions of bin liner color-coding standards and the rationale behind them, procedures at the campus Waste Transfer Station (WTS), process flow diagrams, and a list of processors and destinations for the major categories of collected recyclables. The goal was to create a document that could support F&S’s efforts to educate and engage the campus community in improved waste management and the creation of a zero-waste culture.
There are long-standing misconceptions about campus waste management practices according to Joy Scrogum, an Assistant Research Scientist with ISTC’s TAP and a member of the campus Zero Waste iCAP team. “When I was an Illinois undergraduate, I would hear people say it didn’t matter if you accidentally put recyclables in campus trash bins because everything would be sorted at the campus Waste Transfer Station. That was frankly decades ago, and I still hear people make that incorrect assertion. Although the U. of I. is an innovative research institution, our Waste Transfer Station is low-tech, with a small crew that hand sorts only a fraction of the materials collected. There’s no cutting-edge equipment using lasers or air currents to extract recyclables, just humans pulling items from certain colored bags that are emptied onto a conveyor belt. It would be physically impossible to hand sort all the waste generated on campus, and most people aren’t even aware of the fact that different colored bin liners are meant to signify different actions at the transfer station. The contents of black bags, for example, aren’t emptied for a hand sort, because that color is supposed to signify waste collected from restrooms or laboratories.”
The study uncovered a lack of awareness, confusion, and/or inconsistent compliance regarding the bin liner color-coding standard, suggesting that improved communication and efforts to ease supply chain barriers could result in increased capture of recyclable materials. Observations during building walkthroughs and feedback compiled from stakeholder engagement indicated that greater consistency in collection bin style and signage, along with improvements in communication of proper waste management and recycling procedures to students, faculty, and staff could result in improved collection and reduced contamination of recyclable materials.
Key findings from the analysis include:
- 34 percent of campus waste reviewed was avoidable
- 23 percent of all landfill materials were some form of paper towels
- Recyclable materials made up 13 percent of the total waste stream
- 17 percent of waste was compostable
- 18 percent of recyclables were contaminated and therefore unsalvageable
- Liquids contributed to contaminating 5 percent of all the recycling items sorted
TAP made 39 recommendations for waste reduction and improved management grouped into seven themes (education & outreach, infrastructure, policy, programming, purchasing, research, and retail). Many of the suggestions encourage colleges and departments to look upstream at the source of waste generation to proactively reduce the amount of waste that ends up in landfills.
F&S Zero Waste Coordinator Daphne Hulse said, “ISTC’s important and updated insight gives us the ability to turn their work into meaningful results that have an impact across campus. To accomplish our goals, we need to keep looking at how we can all continue to make progress by taking all available actions to properly reduce, reuse, and recycle where we study, work, recreate, and live.”
A more detailed summary of study findings, along with the full report and executive summary for download, are available on the F&S website at https://fs.illinois.edu/campus-building-waste-characterization-opportunity-assessment/.
Daphne Hulse will also discuss the audit results, the details of campus waste and recycling management, and ongoing zero waste initiatives in an ISTC Sustainability Seminar presentation entitled, “Landfills Are Organized Littering: How the University of Illinois Is Moving Toward Zero Waste.” This hybrid presentation (with in-person and online attendance options), is scheduled for September 11 from 2-3 PM. Learn more and register at https://calendars.illinois.edu/detail/6229/33493027. ISTC Sustainability Seminars are recorded with archives available online within a few weeks of the seminar’s completion.
Since the development of the iCAP, the 
