Presidential Decree No. 1586 established the Philippine Environmental Impact Statement System (PEISS)
1978
Purpose of PEISS
Attain and maintain a rational and orderly balance between socio-economic development and environmental protection
Requirement for undertaking ECP and/or ECA
Secure an Environmental Compliance Certificate (ECC) before undertaking or operating
Pursuant to Section4 of PD 1586, Presidential Proclamations 2146 and 803 have been issued defining the Environmentally Critical Projects (ECP) and Environmentally Critical Areas (ECA)