richard a. ludt waste management administrator interior removal specialist, inc. leed ® ap
TRANSCRIPT
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C&D does not stand for Concrete and Dirt:
The truth behind the diversion in the City of Los Angeles
BOMA Recycling Seminar March 24, 2009
Richard A. LudtWaste Management AdministratorInterior Removal Specialist, Inc.
LEED® AP
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Interior Removal Specialist, Inc.Interior demolition contractor since 1994Began hauling own debris in 1998Received California State certification as C&D
Processor in 2003Received Full Solid Waste Permit in February 2008Demolished nearly 10,000,000 square feet of
commercial interior space in 2008Produced 31,942.76 tons of debrisRecycled 24,915.37 tons (78%)Had to look at diversion differently due to waste
stream
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Award winning diversion brings interesting questions
GEELA in 2006SWANA Gold and Silver in 2006WRAP of the Year in 2006CRRA Gold in 2006ISWA Innovation Award in 2007Why did we win?What are we doing differently?
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Commercial Interior demolition vs. New Construction demolition
• Construction and demolition debris can and should be broken down to two or three separate waste streams
• Full building demolition creates a completely different waste stream than tenant improvement or CI debris
• CI Debris is lighter and harder to separate than full building demolition debris
• Road and Bridge work could be a category in itself, consisting of strictly concrete, asphalt, and metals
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Hard vs. Soft demolitionFull building
demolition debrisCommercial Interior
demolition debris
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Largest Weight FactorsNew Construction
Full Building Demolition
Commercial Interior Demolition
Most weight comes from concrete, steel, wood, dirt
Traditional demolition waste stream
Easily diverted
Most weight comes from gypsum wallboard, metal, plastic laminate cabinetry, particle board, and carpet
Many non-traditional diversion items
Fewer markets
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Heaviest materials, hard vs. soft demolitionHard demo Soft demo
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Difficulties in diversion in CI projects
Donation or sale of usable materials and furniture difficult if material is not removed before demolition, storage for these materials can be problematic
Ceiling tile recycling difficult if material is not saved on jobsite at time of demolition
Carpet recycling is expensive in Southern California due to cost and distance to recyclers
Plastic laminate cabinets and particle board furniture is not compostable or mulchable.
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Donation possibilities
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Facility AveragesThe accepted form of computing a diversion rate
is to use a facility averageFacility Average is computed as total tons inbound
minus tons sent to landfill equals diversion rateFacilities do not track hard vs. soft demolition
loadsFacilities often issue receipts that say “Mixed
C&D Debris, recycled --%” without breaking down materials
Without material breakdown, no real accounting can be achieved
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Los Angeles Averages
City of Los Angeles produced over 800,000 tons of C&D debris in 2006
Metals, wood, inerts, and cardboard accounted for nearly 70% of all recycled materials
Approximately 22 % of all incoming debris was sent to landfill
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Commercial Interior Demolition recycled material percentages*
Drywall- 25.82%Metals- 16.44%Wood- 12.69% (Only 2% of this material is dimensional lumber,
the remaining 98% is particle board and plastic laminate cabinetry, traditionally not captured by C&D facilities)
Interts (Tile, Granite, Marble)- 9.57%Carpet- 7.96%Ceiling Tile- 4.82%Cardboard- 1.24%
Total- 78.54%
*By weight, based on tonnage from 2008, Interior Removal Specialist, Inc. yard
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Hard to recycle materials
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Actual diversion at traditional facilitiesMetal, wood, inerts and cardboard account for
about 26.25% of CI demolition loads by weightThese same materials account for 75% to 90%
of full building demolition loads by weightMixed CI loads at many facilities are only
sorted for the metals, cardboard, and whatever dimensional lumber they can recover, meaning that mixed CI loads are generally recycled at a rate of far less than 50%, yet are given the Facility Average diversion rate
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Commonly recycled materials
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What are we really burying? The Toxic 20%
When inerts are taken out of the waste stream, only the organic, toxic and potentially toxic are left
When buried in large quantities gypsum wallboard produces greenhouse gasses
Particle board contains adhesives and chemicals that contribute to landfill leachate
Carpet and plastics may stay in landfills for centuries to come
Organics create methane gas, 23 times more harmful than Carbon Dioxide
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How did this come to be?Large waste haulers approached C&D as a
waste stream, not a diversion opportunityWhen diversion became mandatory, processors
simply went after the low hanging fruitInerts were the easiest and most plentiful
materials by weightMost people not in the waste industry are not
familiar with the actual mechanics of C&D diversion and do not understand the failure of facility averages in tracking actual diversion for CI projects
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Where do we go from here?Educate ourselvesLook at spaces before demolition to find
donation itemsWork with contractors to make sure that the
debris is being taken to City certified facilities
Require proof of diversion at completion of projects
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Thank you.
Richard A. LudtWaste Management Administrator
LEED® APInterior Removal Specialist, Inc.