This paper reviews the implementation of one major environmental regulation in the Philippines, i.e., the Environmental Impact Statement (EIS) system. This deals with the process of Environmental Impact Assessment (EIA) and the Environmental Clearance Certificate (ECC) required of projects or undertakings that have environmental implications. The paper looks into the following aspects - policies and procedures, institutions, and coordination among stakeholders involved in the EIS system. It examines the role of local government units (LGUs) in the implementation of the EIS system and recommends measures to improve the ECC policy and governance at the local level.