Environmental Compliance Certificate is not a permit to operate

Dear PAO,

My sister, an overseas Filipino worker, is planning to build a resort on her property. She is aware of the various environmental regulations and permits we need to secure. One important requirement relayed to us is the Environmental Compliance Certificate (ECC), which we are willing to comply. Since my sister will be investing her hard-earned money into this project, she is eager to start accepting clients as soon as possible to recover her investment quickly. She asks whether the resort can start operating immediately once the ECC is issued.