• Draft revision of DAO 98-63 (for public consultation)
• DENR Administrative Order No. 63 Series of 1998 (DAO 98-63) – Guidelines for the Designation of DENR Recognized Environmental Laboratories.
• EMB MC 2016-012 – EMB Approved Methods of Analysis for Water and Wastewater
• EMB MC 2014-007 – Guidelines for the Registration of Laboratories to Perform Analysis of Polychlorinated Biphenyls (PCBs) in Transformer Oil, Waste Oil and Non-Porous Surface Materials