EMB Region 2-Ambient Monitoring and Technical Services Section spearheaded the anti-smoke belching campaign in coordination with PIESTTA Airshed member, the local government unit of Iguig. The Anti-smoke Belching Units of EMB and Land Transportation Office (LTO) Region 2 jointly conducted the roadside emission testing of diesel-fed vehicles along the Municipality of Iguig, Cagayan on 5 February 2021.

The diesel-fed vehicles were subjected to emission testing using the opacimeter in order to confirm their compliance based on the standards provided under DENR Administrative Order 2015-04, the implementation of vehicle emission limits for Euro 4 and in-use vehicle emission standards.

Based from the results, out of the 33 vehicles tested, 13 passed and 20 failed based on the emission standards stipulated under DAO 2015-04.