QuestionsQuestions (DENR ADMINISTRATIVE ORDER NO. 98-50)
DAO 98-50 declares the DENR policy, consistent with PD 1152 and PD 984 and their IRRs, to adopt a system for safe and sanitary disposal of waste.
They apply to all waste disposal sites in the country, whether operated by LGUs or by the private sector.
The preamble cites PD 1152 and PD 984, RA 7160 (Local Government Code), Presidential Memorandum Circular No. 88 (1994) making DENR Chairman of PTFWM, and PD 1152 and EO 192 as bases for providing technical assistance on municipal solid waste management.
It adopts landfill site identification and screening criteria for municipal solid waste disposal facilities.
They are: (1) Area Capability and Availability; (2) Haul Distance and time; (3) Proximity to Sensitive Groundwater Resources; (4) Proximity to Perennial Surface Water; (5) Occurrence of Flooding; (6) Proximity to Sensitive Land users; (7) Local Ecological Conditions; (8) Current and Future Land Use; (9) Seismic Condition; (10) Geologic Condition; (11) Soil/Land Condition; (12) Topography; (13) Proximity to Airports; plus the attached ANNEX A contains detailed guidance for the listed criteria.
Absolute criteria are minimum requirements a site must meet to be considered. Conditional criteria mean the site meets the absolute conditions but is still subject to additional enhancing conditions that are not exclusionary.
Leachate is the liquid contaminated from contact with decomposing wastes containing bacteria and other materials that drain out of dumpsites and landfills.
A waste disposal site designed, constructed, operated, and maintained with engineering control of significant potential environmental impacts arising from its development and operation.
A confined aquifer is located between two relatively impermeable layers.
Liners act as low-permeability barriers to eliminate leakage or minimize the rate at which leachate escapes into the surrounding environment; they may be clayey soils, synthetic materials (e.g., HDPE), or a combination.
It is the distance a collection vehicle travels from the service/collection area to a treatment and/or the disposal facility.
They are: (a) data acquisition; (b) plotting excluded areas based on absolute criteria on an appropriate map; (c) identifying candidate areas for field survey; (d) site survey and evaluation; and (e) selection of the preferred site.
It is a matrix that presents the qualitative evaluation of each site based on the screening criteria, aiding local officials in assessing the best site for the proposed landfill and ecological waste management center.
The final decision should be approved by the council of elected officials after due public consultation, considering both technical and financial considerations.
If any section/provision is declared unconstitutional or invalid by a complete court, the remaining provisions continue in force as if the annulled/voided provision had never been incorporated.
The guidelines take effect thirty (30) days after publication in the Official Gazette or in a newspaper of general circulation.