Overall Rating Platinum
Overall Score 85.88
Liaison Sam Lubow
Submission Date March 3, 2022

STARS v2.2

Stanford University
OP-18: Waste Minimization and Diversion

Status Score Responsible Party
Complete 4.03 / 8.00 Melissa Maigler
Sustainability Analytics Manager
Office of Sustainability
"---" indicates that no data was submitted for this field

Parts 1 and 2. Waste per person

Figures needed to determine total waste generated (and diverted):
Performance Year Baseline Year
Materials recycled 4,236.90 Tons 4,306.57 Tons
Materials composted 9,904.26 Tons 2,542.58 Tons
Materials donated or re-sold 361.38 Tons 7.10 Tons
Materials disposed through post-recycling residual conversion 0 Tons 0 Tons
Materials disposed in a solid waste landfill or incinerator 7,279.61 Tons 13,982.65 Tons
Total waste generated 21,782.15 Tons 20,838.90 Tons

If reporting post-recycling residual conversion, provide:

A brief description of the residual conversion facility:
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Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period Jan. 1, 2019 Dec. 31, 2019
Baseline Period Jan. 1, 1998 Dec. 31, 1998

If end date of the baseline year/period is 2004 or earlier, provide:

A brief description of when and why the waste generation baseline was adopted:
Stanford's waste diversion programs started in the 1970s, with peak landfill waste recorded in 1998. Thus, 1998 is used as the base year for all waste reduction calculations at Stanford.

Figures needed to determine "Weighted Campus Users”:
Performance Year Baseline Year
Number of students resident on-site 11,246 9,363
Number of employees resident on-site 2,273 2,108
Number of other individuals resident on-site 1,420 0
Total full-time equivalent student enrollment 18,876 12,151
Full-time equivalent of employees 16,948 8,012
Full-time equivalent of students enrolled exclusively in distance education 0 0
Weighted campus users 31,667.75 17,990

Total waste generated per weighted campus user:
Performance Year Baseline Year
Total waste generated per weighted campus user 0.69 Tons 1.16 Tons

Percentage reduction in total waste generated per weighted campus user from baseline:
40.62

Part 3. Waste diverted from the landfill or incinerator

Percentage of materials diverted from the landfill or incinerator by recycling, composting, donating or re-selling, performance year:
66.58

Percentage of materials diverted from the landfill or incinerator (including up to 10 percent attributable to post-recycling residual conversion):
66.58

In the waste figures reported above, has the institution recycled, composted, donated and/or re-sold the following materials?:
Yes or No
Paper, plastics, glass, metals, and other recyclable containers Yes
Food Yes
Cooking oil Yes
Plant materials Yes
Animal bedding Yes
White goods (i.e. appliances) Yes
Electronics Yes
Laboratory equipment Yes
Furniture Yes
Residence hall move-in/move-out waste Yes
Scrap metal Yes
Pallets Yes
Tires Yes
Other (please specify below) Yes

A brief description of other materials the institution has recycled, composted, donated and/or re-sold:
Plastic film, grasscycling material, brush-to-mulch program material, logs-to-chips program material, wood waste (in addition to pallets), stable waste

Optional Fields 

Active Recovery and Reuse

Materials intended for disposal but subsequently recovered and reused on campus, performance year:
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Recycling Management 

Does the institution use single stream recycling to collect standard recyclables in common areas?:
No

Does the institution use dual stream recycling to collect standard recyclables in common areas?:
Yes

Does the institution use multi-stream recycling to collect standard recyclables in common areas?:
No

Contamination and Discard Rates 

Average contamination rate for the institution’s recycling program:
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A brief description of any recycling quality control mechanisms employed:
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Programs and Initiatives 

A brief description of the institution's waste-related behavior change initiatives:
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A brief description of the institution's waste audits and other initiatives to assess its materials management efforts and identify areas for improvement:
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A brief description of the institution's procurement policies designed to prevent waste:
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A brief description of the institution's surplus department or formal office supplies exchange program that facilitates reuse of materials:
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A brief description of the institution's platforms to encourage peer-to-peer exchange and reuse:
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A brief description of the institution's limits on paper and ink consumption:
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A brief description of the institution's initiatives to make materials available online by default rather than printing them:
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A brief description of the institution's program to reduce residence hall move-in/move-out waste:
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A brief description of the institution's programs or initiatives to recover and reuse other materials intended for disposal:
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Website URL where information about the institution’s waste minimization and diversion efforts is available:
Additional documentation to support the submission:
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Data source(s) and notes about the submission:
For this STARS submission, Stanford is opting to report CY2019 data, which is most representative of waste tonnage and practices during typical pre-pandemic operations. Therefore, the associated 2019 population metrics in this Waste credit will vary from the "PRE-5: Academics and Demographics" data, which is from 2021.

The Faculty Staff Housing area on Stanford's Campus is excluded from the overarching STARS boundary since Stanford does not have operational control over these residences, and they receive electric and gas utilities separate from Stanford's utility systems. Thus, Stanford does not closely track the number of residents in this area. However, this area of the campus, including both single-family and multi-family homes, is served by Stanford’s waste hauler, so the number of residents in this area has been estimated for the purposes of this credit using the assumption that an average of 2.5 people live in each of the 900 residences within that area. These numbers have been included in the "number of employees resident on-site" credit fields for their respective years. This and the Water Use credit are the only two credits in which Stanford includes any employees resident on-site.

Additionally, Stanford provides many (but not all) waste services to the SLAC National Accelerator Laboratory, which is generally excluded from the overarching STARS boundary since Stanford does not have operational control over the facility. Estimates of the waste volumes and occupancy data at the facility have been included in this credit. Waste services (excluding Hazardous Waste) are the only service provided by Stanford to SLAC, so this Waste Minimization and Waste C&D credits are the only credits where this facility is considered.

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.