37. The Chair of the IWG on PMP introduced GRPE-83-20 as updated terms of reference and rules of procedure for the IWG on PMP, detailing all the expected activities until June 2023. The Chair requested for information about expected completion for ultra-fine particulate under 23nm measurement procedure for light duty vehicles on the road. The Chair of the IWG on PMP informed this procedure was expected to be completed by June 2022.

38. He finally announced that, after more than 15 years as Chair of the IWG on PMP, other activities would prevent him for carrying on being a Chair of the IWG on PMP. The IWG on PMP nominated Barouch Giechaskiel, from the European Commission Joint Research Centre, as a new Chair of the IWG on PMP.

39. GRPE endorsed GRPE-83-20 and recognized the great work and achievements from Giorgio Martini as outgoing Chair of the IWG on PMP and congratulated Barouch Giechaskiel as the new Chair for the IWG on PMP.