Efficiency & Performance Improvement in University Waste Collection
Presentation on improving operational productivity and cost savings in waste collection at UMass Amherst, focusing on equipment, system design, and waste composition analysis. Key points include a transfer station, single-stream recycling, truck scale usage, and prioritizing recycling in dorms. Various departments' roles in waste management are highlighted.
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Efficiency & Performance Improvement in University Waste Collection Presentation for CURC Webinar June 8, 2017 UMass Amherst Office of Waste Management, Moving & Surplus John Pepi, General Manager- OWM
Major Points and Themes: Emphasis on operational productivity and cost savings in: collection equipment, processing and system design; On-campus trash transfer station for efficiency and widened disposal options; Understanding the composition, both, of what we divert and what s left trash going to disposal facility; Moving to single stream: eliminated an entire collection route, reduced recycling revenue; and yet no measured increase in captured materials; On board truck scales show promise for understanding campus generation patterns but costly and involves multiple hurdles; Value cost, net energy use and GHG emission impact of operations and project choices; Waste system modeling showed priority need to get recycle-ables out of the dorm trash stream over starting a new compost-ables collection route in dorms;
Campus Background and Program Structure
UMass Amherst: Rural Mass; 1,450 acres; 190 occupied buildings, 35,000 students, faculty & staff. 2.4 million sf in new buildings over last 10 years incl. res halls for +2,200 students
UMass Trash Flow Diagram Two - Umass 18cy Trash Collection Packers: 4-6 tons daily/ea Umass Dorms or Offices Umass Waste Recovery & Transfer Facility Private Transfer Station 15 miles from campus Southbridge Landfill - 40 miles, 3,000 tons annually
Departmental Roles in UMass Waste Management Landscape Services Delivers landscaping waste for composting Manages leaf & yardwaste composting Residence Life Operations Sets out dorm trash & recyclables Provides bins inside dorms Maintains recycling signage The Office of Waste Management Collects all trash, food waste, recycling Conducts most education & outreach Purchases all carts and col. equipment Manages all waste vendor relations Academic/Admin Custodial Provides/services desk-side trash & recycle bins Sets out trash & recyclables Limited enforcement & no sorting Dining Services Separates food waste in kitchens/dish rooms Loads/operates most campus waste compactors Provides for 100% compostable outdoor food events Sustainable Umass Coordination of Green Initiatives Experimental Waste Prevention & Recovery Projects Campus Advocacy & Planning
Waste Storage, Processing, and Shipment
Umass Waste Recovery & Transfer Facilty (WRTF)
Rice Lake Survivor 70 Truck Scale up to 100 Tons Truck scale read out links to Carolina Waste Works software: customer, weight, date, truck 30-50 vehicles per day: tandems, rolloff tractors, packer but mostly pickups, stakebodies and vans.
Trash Transfer Station: Enclosed 90cy Compaction Trailer; 5cy McClain Compactor
Physical Plant Invests $1 Million in Waste Recovery and Transfer Facility(WRTF) (1992) Renovation of old riding arena on 8 acres on campus outskirts Hub for processing & transfer of 5,500 tons annually Transfer to 40 cy roll-offs, weigh scale, 3 loading docks, baling operation, sorting, de-manufacture and storage
Clockwise: Dumor outdoor trash-recycling; Rubbermaid 3541 public spaces; Custom caf clusters; Schaefer 65/95 gal wheeled collection carts;
35 cy self-contained food waste compactor with cart tipper and ozonator Ships 3x s weekly at 10-14 tons One Day s Food Waste Collection in 2008 - 40 (64 gal.) Toters) 2017 approx. 90 daily
One-third of UMass trash and compostables collected in 11 trash and 2 food waste compactors 24/7 coverage, less noise, but less waste control, more $ outlay
Lesson with Compactor Monitors: Costly, not worth it for those that fill once month; yet for heavy volume sites (weekly or more often) customers want regularly scheduled pickups.
Dedicated Website since 1999 latest complete update Febr. 2017
Typical dorm trash room Recycling guidelines in image & text versions
Taking Trash Out of the Closet (The Umass RECYCLE 2000 Campaign) Mount RecycleMore! Bus-Side Advertising Focus on daily dorm-student waste 3,500 lbs. or 18 cy of recyclables trashed daily; Debt to nature tallied: energy, pollution & wasted resources; 10 campus buses sport large exterior bus ads (30 x 108 ) on curbside (bus stop side); 40 interior bus ads (11 X28 ) inside another 15 buses- two different messages R.A. feedback - 44 of 52 said some or very effective
Data Collection and Performance Measurement
Fall 2013 Academic Waste Sort Elab II, Studio Arts, Skinner Hall (% by weight) Historical Ave. for Academic is 15-20% Single Stream in Trash Mixed Paper, 8.2% Liquids, 1.3% Bottles-Cans, 3.3% Foodwaste, 9.8% Liquids Mixed Paper Bottles- Cans Foodwaste Trash, 77.4%
Residence Life Trash Waste Sorts (Nov. Dec. 2014) Pounds trash 359 total food waste liquids mixed paper bottles & cans total 119 52 45 bottles & cans 86 660 mixed paper Percent liquids trash food waste liquids mixed paper bottles & cans total 54% 18% 8% 7% food waste 13% 100% trash 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Loadman Cart Tipper & Underbody On-board Truck Scales; Installed 2016 5 Trucks: Jury s Out! - Some Good Customer Data
Loadman truck route software: stops vs service locations. Breadcrumb trail of truck movements
2015 Academic & Interdepartmental Collaboration to Create a Computer Model (Insightmaker) of Umass Waste System (economics, energy and GHG parameters by mgt. option)
Key Finding of Waste Stream Computer Modeling Project Impact of Raising Capture % for Existing Dorm Recycling Route vs New Dorm Compost Route Landfill 20% of Dorm Trash (200 tons) 197 197 100 tons Diverted -138 184 Emissions MTCO2e Emissions MTCO2e Dorm Single Stream (20% of trash) Dorm Food Waste (20% of trash)
Major Points and Themes: Focus on operational productivity and cost savings in: collection equipment, contracting and basic program design; On-campus trash transfer station for efficiency and keeping disposal options open; Understanding the composition both of what we divert and what s left trash going to disposal facility; Move to single stream: eliminated an entire collection route, reduced recycling revenue; and yest no measurable increase in captured materials; On board truck scales show promise for understanding campus generation patterns but costly and involves multiple pitfalls; Evaluate cost, net energy use and GHG emission impact of operations and project choices; Waste system modeling showed priority of getting recycle-ables out of the dorm trash stream over starting a new compost-ables collection route in dorms;
