4.08.07 Environmental Management: Air and Water Quality

Wed, 11/21/2007 - 16:15
Note: This is a first attempt to provide guidance in preparing the information product needed for the CLUP and is intended to be used hand-in-hand with Volumes 1 and 2. As more knowledge is gathered, the IP will be updated. Likewise, updates may be required due to new or changing land-use policies. Furthermore, data will continuously be prepared by the custodians, which may require updates. For the latest update, please check HLURB Homepage: http://www.hlurb.gov.ph/ or contact HLURB, telephone +632 927 2698.       Step 1: Provide a Background and Identify the Objectives of the GIS Analysis     Pollution is a serious problem caused by urbanization. Aside from the ecological aspect of the problem, it is also a planning issue. Air and water pollution have serious effects on the health and lives of people, therefore the sources of pollution (like industries) should be as far away from residential areas. However, there are other sources of pollution such as motor vehicles (mobile sources), which are very common and become part of the urban scenario, and these should also be addressed in planning. Any type of pollution should not go unabated. Pollution should be controlled and there are already a number of laws that should be applied for pollution control, such as the Clean Air Act, Clean Water Act, Toxic Substances and Nuclear Waste Control Act, Solid Waste Management Act and other laws. The objective is to show the polluted water sources, and areas with poor air quality as a consideration in determining suitable urban areas.     Step 2: Identify the Indicators to Evaluate Suitability.     If no data is available, physical observation can help determine polluted water bodies and/or areas with poor air quality.     Source : DAO 2000-81 IRR for RA 8749 (Clean Air Act) Part II, Rule VII, Sec.     Step 3: Create the Database     Attributes     There are three tables of Environmental Management Information to prepare. Those in bold are used in the example below. EM10 Water Quality Monitoring  EM11 Air Quality Monitoring  EM12 Noise Pollution Source     The Custodian of sector data is the Environmental Management Bureau. Some data for air quality could probably be obtained from the Manila Observatory.     There is very minimal Air and Water Quality Data available for the LGU. There are also very minimal maps to show polluted areas. But even though there is no data, these pollution phenomena can be seen and observed. The LGU would probably know which areas are polluted or have poor air or water quality. The next example shows areas where high density of vehicles ply their routes, and which are also traffic congested. These areas are usually highly polluted due to vehicle exhaust. However, it will be hard to measure the exact affected area of the pollution so only approximations may be used.     Poor Air Quality   Poor Water Quality       The same can be done with water quality as shown below. It will be trickier to assess water quality due to lack of facilities to actually monitor water quality. But whenever possible, this has to be somehow monitored by the LGUs in coordination with concerned agencies.         Step 4: Analyze the Data     The data above is overlaid with the land use map. These layers will be inputs to the Risk and Suitability Map.     Step 5: Present the Data     See maps above  
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