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APPENDIX 7 : Proposed Additions and Modifications to the NPRI for the Reporting Year 2006 (Presentation)

Perfluorooctane Sulfonate, its Salts and Precursors

Proposal: Addition to the NPRI at a 50kg MPO threshold

  • Environmental health screening assessments underway, draft expected Oct. 2004
  • Present in all parts of the environment
  • PFOS is not manufactured in Canada and has been phased out of the majority of its uses here in Canada;
  • Used as water and oil repellents, in fire-fighting foams, in paints, in hydraulic fluids, in surfactants and in stain removers

Hexachlorobutadiene

Proposal: Addition to the NPRI using an activity based threshold

  • Included on PSL2; final assessment report published in 2002
  • Included because it was found to be persistent and bioaccumulative (P&B)
  • HCBD is a by-product formed during the production of certain chlorinated solvents

Hexachlorobenzene

Proposal: Modification to the NPRI activity based threshold

  • Declared CEPA toxic because it was found to be present in Canadian environment at harmful concentrations
  • Found to be PB&T, consequently slated for virtual elimination
  • Canadian production ceased in 1980, but still created as a by-product

Tetrachlorobenzenes & Pentachlorobenzene

Proposal: Addition to NPRI using an activity based threshold

  • These substances were included in PSL1
  • They are considered P&B and are slated for virtual elimination
  • They are not used or produced in their pure form in Canada
  • They are found as contaminants in pesticides and inadvertently produced during incineration and certain metal production processes

Benzidene

Proposal: Addition to the NPRI at an activity based threshold

  • Included on PSL1 due to carcinogenic properties
  • Used primarily as an intermediate in the manufacture of dyes and pigments
  • Not produced in Canada, but small amounts may have been imported between '80-'87
  • Manufacture, use, sale, offer for sale or import was prohibited by Prohibition of Certain Toxic Substances Regulations, 2003
  • There are limited essential applications of benzidene related to analytical procedures in the health care sector

Chlorinated Paraffins

Proposal: Modification to the NPRI listing of substances and possibly M, P, O thresholds

  • Short chain chlorinated paraffins (SCCPs) were listed in PSL1, the assessment report (1994) concluded they are a danger to human life
  • There is only one facility in Canada which manufactures MCCPs and LCCPs
  • CPs are mostly imported from 2 American facilities
  • Used as secondary plasticizers, lubricant additives, or in flame retardant polymers such as rubber and PVC

Other Proposals

  • Ethylene Oxide
    • Proposal: Proceed with request for modification as already submitted for 2006
  • Refractory Ceramic Fibre
    • Proposal: Proceed with request for addition as discussed for 2005
  • Polybrominated Diphenyl Ethers
    • Proposal: No change
  • 2-butoxyethanol
    • Proposal: No change
  • 2-methoxyethanol
    • Proposal: Eventual removal of substance from NPRI; the majority of uses are anticipated to be eliminated by 2007