Hazardous Waste Management

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					Workplace-Specific Hazard Training
                    University of Toronto

             November 30, 2011

                 Rob Provost, BSc
   Environmental Protection Services (Hazardous Materials)
         Office of Environmental Health and Safety

• Minimize amounts of waste produced for disposal
• To be able to SAFELY handle chemical,
  radioactive and biological wastes produced as a
  result of research and teaching activities
• Know who Environmental Protection Services
  (EPS) are
• To know where to get the information you need on
  hazardous waste disposal
              Waste Minimization
In 2010 U of T produced :
  143,000 Kg of Chemical waste, costing $ 311,000 to disposal of.
  22 m3 (~25,000 kg) of Radioactive waste, costing $ 175,000 to disposal
  95,000 Kg of Biological waste
How can you help?
• Purchasing practices
• Process modification [less chemicals used or even
• Not mixing with hazardous wastes
• Substitution - less hazardous alternatives ?
   – E.g. mercury thermometers replaced with alcohol or
• All Chemical Waste generation is controlled
  by the Ministry of the Environment (MOE)
• The University has around 64 different
  generator registrations and each have
  different waste classes registered
           Waste Generators
• Each waste generators site has a Waste
  Generator number (eg. ON0179424)
• Waste Classes (eg. 263A, 252L, 331I)
• Is specific to an address and site description
                 What Waste
               is in your area?
• Do you have Chemical waste
  produced in your area? What types?
• Do you have Radiation waste
  produced in your area? What types?
• Do you have Biological waste
  produced in your area? What types?
• Do you know how your waste is
• Do you know who to contact for it?
                       U of T
                General Requirements
Waste handling has the following

•   Packaging
•   Labelling
•   Storage
•   Disposal
    Typical Chemical Lab Hazards
•   Flammable
•   Corrosive
•   Toxic
•   Reactives
At U of T the most common composition in the research labs is:
   75% solvents (most common hazard encountered in labs)
   10% acids
   15% others such as toxins, bases, oxidiziers etc.
           Chemical Waste
• Never mix incompatible materials

  Fire/Explosion            Spill
      Chemical Waste

• Sealed containers

• Reuse old chemical
         Chemical Waste
• Liquid Waste containers
  should only be fill to 75%
  of capacity to allow for
• Don’t use Biowaste pails or
  the Orange pails from
  caretaking for collection of
  chemical waste call for info
            Chemical Waste

• EPS supplies these
  labels to the
• Either dropped off in
  labs or supplies in
  central waste rooms
          Chemical Waste
     Storage - Local Conditions
Some chemicals can become problems by
  degrading and producing hazardous by-
  products with:
• long storage (e.g. ethers degrade to from
  unstable organic peroxides)
• exposure to water or air (e.g. sodium metal
  is a solid and stable but when immersed in
  water produces very flammable hydrogen
           Chemical Waste
• Waste should be segregated according to
• dispose of ageing containers promptly
• DON’T use Bio bags or
  Radiation bags to collect
  spill materials or leaking
• Unknowns??
            Chemical Waste
They are a safety device for
 the protection of laboratory
 personnel and not as
 storage areas

Defeats the purpose of
 having a fumehood
         Chemical Waste
    Storage - Local Conditions

Each building on campus handles waste
  storage differently….
• Some have designated storage rooms
  where waste can be move to
• Other have to keep in lab to be pickup
  by Chem Tech
          Chemical Waste
       Disposal – Storage Area
Lab staff are responsible for removing chemical
  waste to their buildings storage room!
 Make sure container are secure and check for leaks
                      in storage area
            Illegal to dispose of hazardous
        chemicals in the sink (sewer by-law)
       Chemical Waste
MSB 5376           ESC 1011
    What happens to my Chemicals??

•   Segregated
•   Labpacked
•   TDGA Labels
•   Loaded
          Chemical Waste
       Disposal – Lab Pickups
• Plan ahead!!
• Collection done on a first-come-
  first serve basis
• Call-in required for p/u from
  individual lab
• Contractor only on campus 3 days
  a week so pickups can be delayed
  up to 2 weeks depending on waste
  and location!
                 Chemical Waste
             Disposal – Lab Cleanout
Lab Closures (includes moving or renos) require several
   weeks to properly deal with potentially hazardous
   materials. Scheduling Contractors and packaging of
   the hazardous materials also requires time.

1.   Radioactive- Radiation Protection Services (416-978-2028) to arrange for
     proper decommissioning.
2.   Biological- Biosafety Office (416-978-3981) so that the hazard potential
     may be assessed.
3.   Chemical- Environmental Protection Services (416-978-7000) to arrange
     for the proper disposal of chemicals.
4.   Furniture and Room Clean Out- U of T Moving (416-978-0955) to initiate
     the removal of all remaining equipment and materials.
            Chemical Waste
        Disposal – Lab Cleanout
Removal of Chemicals for a lab cleanout should
   be requested at least 2 week in advance!
Chemical Technician will visit the site to review
• what NEEDS to be removed
• What supplies are need to DO the pickup
• check that NO OTHER HAZARDS will affect
   the pickup
Eg. Debris obstructing access to waste
    Contaminated Glass and Tips
Where do I take contaminated solids?

Glass including
Plastic including
•Bench cover
    Chemical Waste Handling
  Personal Protective Equipment
• The same precautions for handling
  hazardous chemicals are applied to
  chemical wastes
• eye protection
• lab coats
• gloves
             Special Cases:
             Gas Cylinders
• Treat as high energy sources
• Use smallest size required to do work
• Try to use local suppliers
• Use returnable cylinders
    (check before buying)
• If supplier unable to accept
     contact EHS office
                Special Case
        Chemically-contaminated sharps

• Chemicals in trace amounts are to be
  collected in U of T approved yellow
  sharps containers
• chemicals drained from sharps prior
• significant amount of chemical
  contamination, first deactivated in
  accordance with MSDS
• Contact Biowaste for pickup and
  disposal 946-3473
Radioactive Waste Management
• At U of T, researchers working with any
  radioactive material, require an internal permit
  approved by UTRPA, BEFORE work begins.
• Only approved permit holders are able to order
  radioactive materials and must be knowledgeable
  in University procedures for disposal.
• All actions and licences for U of T are audited by
  the Canadian Nuclear Safety Commission (CNSC)
Radioactive Waste Management
  – surplus radioactive material
  – materials that has come into contact with
    radioactive materials (e.g. gloves, flasks)
  – used in decontamination (e.g., sponges)
  – contaminated equipment that cannot be cleaned
 Radiation Waste Minimization
• Process modification - new less toxic
  absorbent material used
• Not mixing non hazardous with radioactive
• developed a delay and decay program for
  short-lived isotopes
 Radioactive Waste Management
• Short-lived wastes (< 90 days half life) are
  allowed to decay in a secure University facility
  until no longer radioactive then disposed as non
  radioactive waste.
• Long-lived wastes (> 90 day half life) are sent for
  disposal to permitted facilities.

Wastes are removed & packaged by 2 University
 Radioactive Waste Management
• Liquid and solid waste MUST be segregated
• containers provided by EHS
• Liquid container should be filled to full 75 %
  capacity to maximize absorbent’s potential
• Waste packaged in containers that improperly ID
  other existing hazards
• Do not place non rad waste with rad waste
 Radioactive Waste Management

Waste not properly labelled will not be
Labels provided free by EHS

* Type of label depends on type of waste.
Radioactive Waste Management
         Labelling - Solid
Radioactive Waste Management
        Labelling - Liquid
 Radioactive Waste Management
         Labelling - Liquid
Green label < 30 days      Blue label 30> Half
                                                 Yellow label > 90
(e.g. P-32, P-33, I-131,   life< 90 days
Cr-51)                     (e.g. S-35, I-60)     (e.g. C-14, H-3)
 Radioactive Waste Management
• Each lab should establish
  one clearly identified
  location for waste,
  preferable close to work
  done with radioactive
• Waste should not be stored
  underneath any working
  area or near vicinity of
  people who do not work
  with radioactive materials.
Radioactive Waste Management
     Collection Schedule
Collection is done on a call-in basis or
  according to schedule below:
• Tuesday: ESC, Pharmacy, MSB 6th & 7th
             floors, Zoology
• Wednesday: Banting, Best, Fitzgerald
• Thursday: rest of MSB
• all others when requested
            call 978-2050
    Radioactive Waste Management
             Special Cases
•   Animal Carcasses
•   Gas Chromatographs
•   Gaseous Radioactive Waste
•   Liquid Scintillation Counting Vials (separate Glass and
    Plastic Vials)
•   Liquid Scintillation Counters
•   Fridges, freezers or other equipment
•   Sealed sources
•   Shipping materials
 Radioactive Waste Management
           Special Cases
Needles and Blades

• for trace amounts, disposed into special yellow plastic
  containers approved by U of T and CSA for the disposal
  of such waste
• liquids drained into appropriate colour-coded jars and
  separately treated as radioactive waste
• sharps with significant quantities of an isotope must be
  disposed as RADIOACTIVE WASTE into separate jars.
• These are collect by the Rad Techs (978-2050)
          Biowaste Management
Service provided to Biosafety certified Containment Level 2
  & 3 Labs
• Supply Biowaste 20L Pails, Tags, pickup and information
• Biowaste includes biohazardous material, contaminated
  solids, glass, blades, needles and tips
• Pails CANNOT be autoclaved under any circumstances

      Wastes are removed by 4 University technicians.

NOTE: Some other labs will need Needle pickups without a
  Biosafety Certificate
                   We Take Bags!
The university is committed to being environmentally friendly,
 but we need your help. This will reduce contractor trips and
           the amount of plastic going to landfills.

  DO put in the bags:               DON’T put in bags:
• Soft items: eg. Gloves, wipes,    • Glassware
  filter paper                      • Pipettes
• Non-sharp plasticware: eg.        • Tips
  eppendorf tubes, tissue culture   • Or anything else that could
  bottles, petri dishes               break or leak from the bag –
                                      put these items directly into the
                                      biohazard pails.

   To prevent spills all bags must be double bagged and tied
      shut. For identification purposes, please write your
   Biosafety certificate number on each bag with a marker.
        Biowaste Management

Waste not properly labelled will not be removed!!
             Labels provided free by EPS
            Biowaste Management
Needles and Blades
• disposed into special yellow
  plastic containers approved by
  U of T and CSA for the
  disposal of such waste
• Fill only to indicated fill-line
• Put lid on before offering for
• Place with the Biowaste pails
  for collection
          Biowaste Management

Labs in most buildings are   Building          Scheduled
                             Banting*          Call-in Basis
  services every week,       Best*              Call-in Basis
                             CCBR*            Tuesday / Thursday
  others are on a on-call    Dentistry*          Wednesday
  basis (946-3473)           Earth Sciences*
                                                  Call-in Basis
                             Galbraith            Call-in Basis
                             Gage                  Call-in Basis
                             Leslie Dam Pharmacy* Monday
Contractor pickup at our     Medical Sciences* Tuesday / Thursday
  storage areas three days   Mining
                             Ramsay Wright*
                                                  Call-in Basis
  a week                     Rosebrugh               Friday
                             Tanz                    Monday
                             Wallberg             Call-in Basis
          Biowaste Management
Biosafety certified Containment
  Level 1 Labs :
• Waste can go directly to Regular
• Should the lab staff wish to autoclave
  before disposal use the clear unlabelled
  autoclave bags from Medstores
• Glass and plastic that would puncture a
  garbage bag should go into the Orange
  20L pails supplied by Caretaking
• Needles and blades should be collected
  in the appropriate containers and call
  Biowaste for collection 946-3473
                     More Info

U of T - Office of Environmental Health and Safety
  Laboratory Hazardous Waste Management Manual

Material Safety Data Sheet (MSDS)
   -for specific chemical
(especially for incompatible mixtures)
             CONTACT LIST

(416) 978-7000 for Information

(416) 978-4821 for Chem Pickup

(416) 978-2050 for Rad Pickup

(416) 946-3473 for Bio Pickup

fax:     (416) 971-1361

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