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SUSTAINABILITY AND THE SCHOOL WASTE STREAM Sustainable Waste Stream Management Implementation Challenges Curriculum Tools for Engaging Students.

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Presentation on theme: "SUSTAINABILITY AND THE SCHOOL WASTE STREAM Sustainable Waste Stream Management Implementation Challenges Curriculum Tools for Engaging Students."— Presentation transcript:

1 SUSTAINABILITY AND THE SCHOOL WASTE STREAM Sustainable Waste Stream Management Implementation Challenges Curriculum Tools for Engaging Students

2 THE SCHOOL WASTE STREAM School Campus Source Reduction Landfill Material Recovery Facility Compost Facility Waste bin Recycling Bin Food Waste Cart Tons per year Distance Cost

3 3 Campus energy use Campus water use Transportation of Students and Staff Food Materials Purchasing Use Behaviors Disposal decisions Monitoring GREEN SCHOOLS- A SYSTEMS PERSPECTIVE Campus ecosystem Educational and administrative materials

4 THE SCHOOL WASTE STREAM School Campus Source Reduction Landfill Material Recovery Facility Compost Facility Waste bin Recycling Bin Food Waste Cart Tons per year Distance Cost

5 LIFE CYCLE OF A STUDENT WORKBOOK Raw materials acquisition Materials Manufacture Product Manufacture Product Consumption Final Deposition Landfill Combustion Recycle or Reuse Energy Wastes and Pollution Wastes and Pollution Wastes and Pollution Wastes and Pollution Wastes and Pollution Reuse Product recycling 5

6 DIAGRAM OF A CLASSROOM RECYCLING SYSTEM Recycling Bin and Trash Placed Together Right by the Door Simple Signage Above Recycling Bin

7 RECYCLING SIGNAGE

8 BINS AROUND THE SCHOOL Bin in every classroom Administrative offices Copy room Faculty lounge Cafeteria Playground Bottom line: give people the chance to do the right thing wherever there’s a waste bin, place a recycling bin

9 BASELINE INVENTORY

10 WASTE AUDIT

11 Additional materials: Food Waste, Polystyrene #6, Other Plastics 3,4,5,7, Yard Waste, Textiles, Electronics, Other

12 MONITORING

13 THE SCHOOL WASTE STREAM School Campus Source Reduction Landfill Material Recovery Facility Compost Facility Waste bin Recycling Bin Food Waste Cart Tons per year Distance Cost

14 SOURCE REDUCTION Food Service: Washable trays, silverware, etc. Reduced use of individual packaging Waste Free Lunch Events Unwanted food table Buy local Curriculum Materials: Double sided copies Encouraged use of“Back paper” Reuse of textbooks Administration: Double sided copies Regulation of copier use Electronic Messaging Electronic record keeping Purchase of recycled content materials Bulk purchasing

15 FINANCIAL COST BENEFIT Waste Service Cost Structure for two Districts in Alameda County Waste: $80/cubicyard/week Food Waste: $40/cubicyard/week Mixed Recyclables: $20/cubicyard/week

16 LABOR COST BENEFIT MIXED RECYCLING Waste bin Recycling Bin Food Waste Cart

17 LABOR COST BENEFIT FOOD SCRAPS Waste bin Recycling Bin Food Waste Cart

18 ENVIRONMENTAL BENEFIT the equivalent GHG emissions from 42.4 passenger vehicles each year. the GHG emissions from 26,261 gallons of gasoline consumed. the GHG emissions from 538 barrels of oil consumed. the GHG emissions from 9,640 propane cylinders used for home barbeques. the GHG emissions from burning 1.2 railcars’ worth of coal. the GHG emissions from the electricity use of 30.6 average American homes for one year. Emerson Elementary in Oakland, CA. 264 students diverted 62% of their waste reducing 231 TONS CO2 emissions

19 19 Material Carbon Savings“Break-Even Point” (miles) per ton recycled Truck Rail Freighter Aluminum , , ,000 Corrugated , , ,000 Newspaper ,000 90, ,000 Steel ,000 63,000 73,000 LDPE ,000 47,000 55,000 PET ,000 43,000 50,000 HDPE ,000 39,000 45,000 Glass (to bottles)0.07 2,000 9,000 11,000 “Break-Even Point” is where GHG emissions transporting the recyclables equals GHG emissions (MTCE) avoided when the recyclables displace virgin feedstocks. Carbon emissions “Break-Even” point for long-haul truck driving 30 tons of food waste [6 dry tons] to a compost facility is ~21,000 miles Distance across the Continental US: 3,000 miles around the equator: 24,783 miles Source: David Allaway, Oregon DEQ

20 20 Human Health Cost ($/ton of material) MaterialProductionDisposalTotal Virgin Corrugated Box $95$2$97 Recycled Content Corrugated Box $86$2$88 Virgin Aluminum~$923$5~$925 Recycled Content Aluminum ~$71$5~$76 Virgin Glass$69$1$70 Recycled Content Glass $47$1$48 Virgin HDPE$124$4$128 Virgin PET$327$4$331 Virgin PVC$1,710$4$ Tellus Institute Packaging Study for Council of State Governments,EPA, and State of New Jersey

21 OPPORTUNITIES FOR STUDENT INVESTIGATION Life Cycle Analyses: Paper vs. plastic disposable mugs vs. ceramic hand dryer vs.towels Reading on-line vs. paper Number of uses Material intensity (g)

22

23 Applied Math

24 4.4 tons waste/year ~12% foodwaste ~1000 pounds foodwaste Converts to liters CH4 under typical landfill conditions 19.5 pounds CO2 /gallon 25 miles/gallon 3,200-4,600 miles of driving CH4 23X more potent GHG than CO2 Source: EPA WARM and Brown,S Env. Benefits of Compost Use.BioCycle 48: 6 Environmental Impact Analyses

25 Sustainability ECOLITERACY THE SCHOOL WASTE STREAM School Campus Source Reduction Landfill Material Recovery Facility Compost Facility Waste bin Recycling Bin F ood Waste Car t Tons per year Distance Cost

26 For a Hypothetical District with 800 Students per Grade Level Examine Three Different Measures: Convert bus fleet (143 buses) to biodiesel : saves 582 tons MTCO2 Add 32,000 square feet of photovoltaics: saves 441 MTCO2 Increase recycling rate from 30% to 35%: saves 461 MTCO2 Using the EPA WARM Model to Compare Emissions Reductions Measures Recycling is the lowest cost alternative and uses existing infrastructure Source: EPA WARM model calculations run by Kelly Runyan ESA


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