Areas for further assessment for Final Report Potential CFC-11 use in closed-cell PU foams/polyol systems. Potential quantities of CFC-11 and CTC production needed to supply uses. CFC-11 emissions rates from banks (installed foams) and from landfills, not as the likely source of the increased emissions but to better quantify and understand those background emissions. CFC-11 banks, by geographic location and market sector, to better understand background emissions. Regulations preventing use of dichloromethane in flexible foams. Recent enforcement and/or prosecutions undertaken relating to CFC-11 and CTC production, and/or associated usage, to determine the possible scope of problem. Evaluation of the implications of new scientific publications, e.g., Rigby et al. (Nature, May 2019). 41st OEWG Bangkok, 1-5 July 2019 T E A P

Additional information The Task Force would benefit from additional information on a range of topics for the Final Report: CTC production quantities and the uses to which CTC was put, by quantity, including export amounts and locations; CTC and HCFC-22 plant capacities; Validation of ODS plant shutdowns and dismantling; Quantities of CFC-11 inventory in stockpiles at the cessation of production and the fate of inventory thereafter; Any evidence of illegal CFC-11 or CTC shipments; The capacities and production quantities for CFC-11/12 and CTC plants for parties where less is known about historic ODS production; CFC-11 emission sources related to equipment and foams recycling and destruction; Foam blowing agent emissions rates that may be used for any purpose (i.e. to determine insulating capability or exposure from a public health perspective); Specific end-of-life practices especially for foams; and, Regulations impacting the use of dichloromethane. 41st OEWG Bangkok, 1-5 July 2019 T E A P