Airsheds
One of the Air Quality Principles stated in the IRR of RA 8749 is the recognition that the cleaning of the environment is primarily area-based and that air quality management and control are most effective at the level of airsheds. As defined in the act, “Airsheds” are areas with similar climate, meteorology and topology which affect the interchange and diffusion of pollutants in the atmosphere. Sub-areas within Airsheds may therefore have similar air quality, and face similar problems, development programs and prospects.
As of 2018, there is a total of 22 airsheds in the Philippines, five of which are geothermal airsheds which are specially designated due to the presence of a geothermal plant in the area. For each of the airsheds officially designated, Governing boards have also been established.
DENR Administrative Order (DAO), Memorandum Circular (MC) and Special Order (SO) issued related to Airsheds in the Philippines:
| DAO, MC, SO |
Title |
Date |
| Year 2011 |
| DAO 2011 – 11 |
Re designation of the Metro Manila Airshed into three individual Airsheds and establishment of their Governing Board National Capital Region Airshed Cavite, Laguna, Rizal Airshed Bulacan, Pampanga, Bataan Airshed |
October 19, 2011 |
| Year 2009 |
| DAO 2009-02 |
Designation of Makiling – Banahaw Geothermal Airshed and its Governing Board |
February 11, 2009 |
| Year 2008 |
| DAO 2008-06 |
Renaming Agusan Del Norte Airshed and its Governing Board into Agusan Del Norte Butuan City Airshed and Agusan Del Norte Butuan Airshed Governing Board |
May 13, 2008 |
| Year 2007 |
| DAO 2007-07 |
Revising the initial coverage of the Metro Manila Airshed and its Governing Board |
April 12, 2007 |
| Year 2006 |
| DENR SO 2006-833 |
Amendment to the DENR Special Order No, 2005-28 re: Designation of Non Government Organizations (NGO) and Private Representatives as Member of the Metro Manila Airshed Governing Board and 2006-366 re: Creating an Interim Executive Committee of the Metro Manila Airshed Governing Board and Designating its Members |
October 3, 2006 |
| DENR SO 2006-395 |
Designation of Deputy Chairpersons of the Interim Governing Board of the Metro Manila Airshed |
May 5, 2006 |
| DENR SO 2006-377 |
Creating an Interim Executive Committee of the Metro Manila Airshed Governing Board and Designating its Members |
April 25, 2000 |
| DAO 2006-02 |
Establishment of Baco-Calapan City Naujan Airshed and its Governing Board |
January 16, 2006 |
| Year 2005 |
| DENR SO 2005-981 |
Assignment of EMB and PCMU Staff Pursuant to the DENR Administrative Order No. 2002-05 Designating the Metro Manila Airshed and Creating the its Interim Governing Board |
October 5, 2005 |
| DMC 2005-013 |
Guidelines for the Designation of Attainment and Non Attainment Areas in an Airshed |
September 12, 2005 |
| DAO 2005-11 |
Establishment of the Metropolitan Iloilo Airshed and its Governing Board |
June 10, 2005 |
| DENR SO 2005-28 |
Designation of Non Government Organization (NGO) and Private Sector Representatives as Members of the Metro Manila Airshed Governing Board |
Jan 14, 2005 |
| Year 2004 |
| DAO 2004-22 |
Establishment of South Cotabato Airshed and its Governing Board |
August 3, 2004 |
| DAO 2004-05 |
Establishment of Metro Tuguegarao (PIESTTA) Airshed and its Governing Board |
May 23, 2004 |
| DAO 2004-13 |
Designation of North Cotabato Geothermal Airshed and its Governing Board |
May 18, 2004 |
| DAO 2004-12 |
Designation of Leyte Geothermal Airshed and its Governing Board |
May 18, 2004 |
| DAO 2004-11 |
Designation of Baco-Manito Geothermal Airshed and Its Governing Board |
May 18, 2004 |
| DAO 2004-14 |
Designation Of Southern Negros Geothermal Airshed and its Governing Board |
May 18, 2004 |
| DAO 2004-07 |
Establishment of Northeastern Pangasinan Airshed and its Governing Board |
March 23, 2004 |
| Year 2003 |
| DMC 2003-20 |
Initial Designation of Zamboanga City Airshed |
September 30, 2003 |
| DAO 2003-47 |
Designation of the Members of the Zamboanga City Airshed Governing Board |
September 30, 2003 |
| DAO 2003-45 |
Designation of Members of the Governing Board for Metro Cagayan De Oro Airshed, Province of Misamis Oriental Region X |
September 12, 2003 |
| DMC 2003-17 |
Initial Designation of Metro Cagayan De Oro Airshed |
September 12, 2003 |
| DAO 2003-33 |
Designation of the Members of the Naga City Airshed Governing Board Located in the Province of Camarines Sur, Bicol Region |
July 14, 2003 |
| DMC 2003-13 |
Designation of Naga City Airshed |
July 14, 2003 |
| DMC 2003-09 |
Designation of Agusan del Norte Airshed |
June 10, 2003 |
| DAO 2003-16 |
Designation of the Members of the Agusan Del Norte Airshed Governing Board |
June 6, 2003 |
| DAO 2003-04 |
Initial Designation of BLIST Airshed and the Creation of its Interim Governing Board |
February 12, 2003 |
| DAO 2003-02 |
Initial Designation of Davao City Airshed in Region IX |
February 12, 2003 |
| DMC 2003-03 |
Initial Designation of Baguio City Municipality of LA Trinidad, Itogon, Sablan and Tuba (BLIST) Airshed in the Cordillera Autonomous Region |
February 12, 2003 |
| Year 2002 |
| DMC 2002-13 |
Establishment of Geothermal Areas as Airsheds |
November 13, 2002 |
| DMC 2002-11 |
Initial Designation of Airshed for Metro Cebu |
October 07, 2002 |
| DAO 2002-21 |
Initial Designation of the Members of the Metro Cebu Airshed Governing Board |
October 07, 2002 |
| DMC 2002-03 |
Interim Guidelines for the Designation of an Airshed |
June 10, 2002 |
| DAO 2002-05 |
Initial Designation of the Metro Manila Airshed and the Creation of its Interim Governing Board |
January 23, 2002 |
| DMC 2002-01 |
Initial Designation of Airshed for Metro Manila |
January 23, 2002 |
