QuestionsQuestions (DENR ADMINISTRATIVE ORDER NO. 72)
It adopts survey standards, equipment, and procedures to enhance the capability, efficiency, and effectiveness of DENR’s survey verification and monitoring functions, and to meet increasing demands for land maps for programs like the Comprehensive Agrarian Reform Program and other land-based undertakings.
It covers surveys of extensive areas for accurate delineation of timberland and classified A & D lands within a municipality, delineation of political boundaries, and individual lot surveys for registration proceedings, agricultural development, or other necessary purposes.
They are governed by Lands Administrative Order No. 4 dated July 3, 1980 (the Manual for Land Surveys in the Philippines), and the most recent version of instructions to bidders adopted by DENR, except provisions superseded by new policy guidelines introduced by DAO 72 or subsequent issuances.
They must use procedures with required precision, calibrated and registered surveying instruments that can give the required precision.
The ISF perimeter survey is conducted concurrently with lot boundary surveys in A & D areas, and projected in cadastral or social forestry maps.
The Land Evaluation and Survey Team prepares the sketches, guided by the Forestry Officer assigned by the RED to the project.
The survey must be tied to a reference point of known position established by a circuit or loop traverse of tertiary precision. If EDM is used, it must be periodically tested over a line of known length to verify instrument constant and check for frequency drift.
They must be defined by concrete monuments 15 x 15 x 50 cm marked on top “ISF” and the monument number below it, set 40 cm in the ground.
They shall be “X” marks on immovable or fixed hard rocks or boulders with exposed surfaces of more than one meter in diameter, trees belonging to the first group, or indigenous/living edible fruit trees.
It is undertaken by the Administration using instruments of lesser precision or lower standards such as tachimetry or stadia methods.
The survey must be plotted on the isolated survey plan form with the survey symbol “SF-Region Code Number.” The plan and survey record must be verified and certified correct only by the Chief, Regional Surveys Division after verification, to prevent its use in titling.
An overlay of the cadastral map segregating forest land must be prepared, called SFM instead of CM. The ISF parcels’ perimeter survey is plotted on the SFM and numbered consecutively as ISF-Parcel 1, ISF-Parcel 2, etc.
Mineral land surveys are surveys for quarry applications, sand and gravel concessions, mining claims, coal and petroleum, and other mineral lands, executed for quarry license/permit, location, patent, lease, concession, production sharing agreement, and other mining agreements.
They must be executed consistent with the standards and precision prescribed for isolated land surveys, tied to an acceptable reference point of known position, using registered and calibrated instruments such as transit and tapes or theodolite and EDM.
They must bear the words: “Not for Registration in Court.”
Returns are submitted to the Regional Surveys Division through the Mines and Geo-Sciences Sector for verification and approval.
They must be delimited by a survey of tertiary precision using at least Forestry transits and prescribed tapes.
NAMRIA is responsible for land classification surveys.
The Forest Management Sector is responsible for the land use/capability survey.
NAMRIA is responsible for establishing first, second and third order geodetic network control points.