Construction & Demolition (C&D) Waste Diversion in California

Transcription

1 Construction & Demolition (C&D) Waste Diversion in California Dan Burgoyne Sustainability Manager State of California Department of General Services (DGS) 1

2 New Motivation to Recycle in California 2

3 C & D Waste Classification 12% of Landfill Composition in California Over 100 Million Tons Annually Nationwide Over 4 Million Tons Annually in California 3

4 How Can We Solve This Problem? Reduce Reuse Recycle $ave! 4

5 There is More than One Way to Recycle C&D Waste 5

6 Methods of C&D Recycling 1. On-site separation, recycling, storage & reuse Great savings potential Concrete, asphalt, greenwaste 6

7 Methods of C&D Recycling 2. On-site separation, segregated recycling Salvage value for some materials Lower tipping fees reduces off-site sorting 7

8 Methods of C&D Recycling 3. Mixed waste on-site, off-site separation When there are site constraints Still cheaper than landfill 8

9 C&D Strategy: When do you Start C&D Waste Diversion? You talkin to me? 9

10 C&D Strategy 1. Feasibility Study/Conceptual Phase Establish C&D diversion goals (50-75 % recommended) 2. Budget/Programming Phase Preliminary C&D economic evaluation 3. Prelim./Schematic Design Phase Consider waste management in building systems selection Modular design 10

11 C&D Strategy 4. Design Development Phase Full C&D Economic Feasibility Study Consider salvaged material use 5. Working Drawings Phase Specify recyclable and recycled content materials 6. Bidding Phase Develop waste management plan C&D diversion requirements in bid specs 11

12 C&D Strategy 7. Demolition Phase Contractor to submit C&D plan (incl. list of permitted facilities) Assign project waste coordinator 8. Construction Phase Continuous coordination, monitoring & outreach 9. Project Closeout Phase Summarize & document results Complete contractual & LEED documentation 12

13 LEED Rating System LEED 2.1 NC & CI 50% & 75% C&D diversion Use of salvaged materials Recycled material content (5% & 10%) 13

14 Question: What Phases or Types of Construction Benefit from C&D Waste Diversion? 14

15 Construction Types Benefiting from C&D Waste Diversion 1. Sitework 2. Demolition 3. New Construction or Renovation 15

16 1. Sitework Asphalt grinding/removal Used as road base ~$6.00/ton saved (x 13,776 tons = $82,656) 16

17 1. Sitework Concrete into road base ~$13.23/ton saved (x 1,000 tons = $13,230) 17

18 1. Sitework Greenwaste into mulch ~$29.60/ton saved (x 300 tons = $8,880) 18

19 Sitework Case Study: Franchise Tax Board - Sacramento Tons 18,000 16,000 14,000 12,000 10,000 8,000 Recycled On-Site Recycled Off-Site To Landfill 99.6% recycled (21,700 tons) 69% on-site 6,000 4,000 $104K saved 2,000 0 Asphalt Concrete Green Waste Mixed Waste 19

20 2. Demolition Concrete Steel Crushed for road base, inert fill Aggregate recycled Rebar salvaged High salvage value Segregate for higher return East End closed loop 20

21 2. Demolition Wood Brick Salvage larger members Mulch, WTE Salvage value (~$400/ton) Inert fill 21

22 2. Demolition Gypsum Board Carpet Soil amendment Cat litter Carpet, backing Railroad ties Landscaping 22

23 2. Demolition Roofing Glass Asphalt pavement Aggregate base Fiberglass Aggregate 23

24 Demolition Case Study: Cal Trans District 7 Office Building - LA Brick buildings Concrete buildings 2,770 tons of brick Salvaged / inert fill 7,510 tons of concrete & asphalt Rebar 24

25 Cal Trans District 7 Office Building Asphalt Pavement Excavation Parking lot removed 100% recycled/diverted 320,000 tons recycled Soil & inerts 25

26 Cal Trans District 7 Office Building Recycling During Demolition & Excavation Soil & Inerts Recycled 320,000 Tons C&D Recycled 10,000 Tons To Landfill 412 Tons 96% C&D recycled (10,000 tons) 26

27 3. New Construction/Renovation Steel Wood Cold rolled vs. light gauge New wood cleaner than demolition wood Salvage or recycle 27

28 3. New Construction/Renovation Cardboard Plastics Reduced or no tipping fees Plastic or composite lumber Injection molding 28

29 Construction Case Study: Capital Area East End Complex - Sacramento 1.5 million square foot office complex 91% C&D recycled (18,000 tons) Also recycled excavated soil & rock (300,000 tons) 29

30 Capital Area East End Complex Modified sub-grade construction Saved $84K using mixed C&D waste carrier Shotcrete eliminated 45 tons of plywood forming Eliminated overexcavation Separated asphalt & steel 38% savings over mass landfill 30

31 Capital Area East End Complex Relocated 8-unit apartment building Reused 265 tons of salvaged marble 31

32 Conclusion High C&D diversion rate is possible C&D waste diversion can save $ Early integration can further reduce materials, waste and costs Recycle and Save! 32

33 You d Bettuh Do It! 33

34 Contact Information: Dan Burgoyne Sustainability Manager State of California, Department of General Services 707 Third Street, Ste West Sacramento, CA Office: (916)