■ RA 9003 and IRR
■ DENR DAO 98-50, Adopting the Landfill Site Identification and Screening Criteria for Municipal Solid Waste Disposal Facilities
■ DENR DAO 2006-10, otherwise known as the Guidelines on the Categorized Final Disposal Facilities (Sanitary Landfills)
■ DENR DAO 2006-09, General Guidelines on the Closure and Rehabilitation of Waste Disposal Facilities
■ DENR-DOH Joint Memorandum Circular 05-02, Policies and Guidelines on the Proper and Effective Handling, Collection, Transport, Storage, Treatment and Disposal of Health Care Wastes
■ RA 6969 (Toxic Substances and Hazardous and Nuclear Wastes Control Act of 1990)
■ DENR DAO 96-37 and DAO 2003-30, otherwise known as the Revised Implementing Rules and Regulation of PD 1586 (Environmental Impact System)
■ PD 984 and related issuances such as DAO 35 (Revised Effluent Regulation of 1990) and DAO 34 (Revised Water Usage and Classification/Water Quality Criteria)
■ RA 8749 (Philippine Clean Air Act of 1999) and IRR
■ RA 9275 (Philippine Clean Water Act of 2004) and IRR