Apo Cement, based in Barangay Tina-an, Naga City assured it conducts regular air quality monitoring in its plant and the 193-hectare quarry area.

The company also said it has implemented the efficient utilisation of resources, the use of alternative fuel, and regular information dissemination to stakeholders.

Engr. Jenevey Patalinjug, Apo Cement Corp. environment, health and safety officer, said the company has installed 10 ambient air quality monitoring equipment in various sites within the quarry area.
Air emission tests are also done regularly, aside from measuring levels of nitrogen oxide, sulfuric oxide, carbon dioxide and dust particles.

The tests are conducted quarterly by the multi-partite monitoring team, the company and the Environmental Management Bureau (EMB) 7 office.