EU regional background concentration (Cregional) of 3.6 ng Ni/m3 (average of P90 annual concentration for the years 2013, 2014 and 2015). Safe use ES Tonnage Emission Tonnage × Clocal RCR = for all sectors (Ni T factor emission PEC/DNEL according to /year) (g Ni/T) factor (DNEL= 60 Tier 1 (EUSES (g /year) ng/m3) model) Sector All T EF T × EF < <56.4 3.6* <60 <1 74000 *: EU average of country P90 annual Ni concentrations (2013, 2014 and 2015) If a site is not compliant with these conditions, meaning that the product of tonnage and emission factor is above 74000 g Ni/year, a tiered approach including site-specific modelling can be applied to demonstrate safe use.
EU regional background concentration (Cregional) of 3.6 ng Ni/m3 (average of P90 annual concentration for the years 2013, 2014 and 2015). Safe use ES for all sectors according to Tier 1 (EUSES model) Sector Tonnage (Ni T /year) Emission factor (g Ni/T) Tonnage × emission factor (g /year) Clocal RCR = PEC/DNEL (DNEL= 60 ng/m3) All T EF T × EF < 74000 <56.4 3.6* <60 <1 *: EU average of country P90 annual Ni concentrations (2013, 2014 and 2015) If a site is not compliant with these conditions, meaning that the product of tonnage and emission factor is above 74000 g Ni/year, a tiered approach including site-specific modelling can be applied to demonstrate safe use.