Ordinance
on Air Pollution Control
(OAPC)

¹ The meas­ured val­ues shall be cor­rec­ted to the ref­er­ence val­ues spe­cified in An­nex 1 Num­ber 23.

² Un­less oth­er­wise spe­cified in An­nexes 1–4, the val­ues cal­cu­lated in ac­cord­ance with para­graph 1 are to be ex­pressed as hourly mean val­ues for the as­sess­ment. In jus­ti­fied cases, the au­thor­it­ies may spe­cify oth­er suit­able av­er­aging peri­ods.

³ In the case of ap­prov­al and con­trol meas­ure­ments, emis­sion con­trol re­quire­ments shall be re­garded as hav­ing been com­plied with if none of the mean val­ues de­term­ined in ac­cord­ance with para­graph 2 ex­ceeds the lim­it value.

⁴ In the case of con­tinu­ous meas­ure­ments, emis­sion lim­it val­ues shall be re­garded as hav­ing been com­plied with if, with­in a cal­en­dar year:

a.

none of the daily mean val­ues ex­ceeds the emis­sion lim­it value;

b.

97% of all the hourly mean val­ues are no more than 1.2 times the lim­it value; and

c.

none of the hourly mean val­ues is more than twice the lim­it value.

⁵ The au­thor­it­ies shall take ac­count of the par­tic­u­lar cir­cum­stances when as­sess­ing emis­sions dur­ing start-up and shut-down peri­ods.