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                           محیط زیست و منابع طبیعی:: 
                            استانداردهای ملی کیفیت هوای محیط
                        
                        National Ambient Air Quality standard (NAAQS) 18
Quality standard (NAAQS, 2019) and subsequent damage cost will be evaluated for breached
such as NAAQS standard on pollutant concentration as in Table 6, relative risk and baseline
Table 6: National Ambient Air Quality Standards (NAAQS, 2019)
Parameters  NAAQS standard (pg/m3) Annual mean  Daily mean PMio  60  100 NO
 
                        
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