SURVEY STANDARD INSTRUMENTATION AND PROCEDURES IN THE VERIFICATION AND APPROVAL OF MAPS IN THE DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES

Pursuant to DENR Administrative Order No. 1 dated January 13, 1988,
and in line with the continuing program of organizational development
improvement, and in order to further enhance the capability, efficiency
and the effectiveness of the Department’s survey verification and
monitoring functions and in meeting the ever increasing demands for
varied land maps in the implementation of the Comprehensive Agrarian
Reform Program and other related technical services of numerous land
based undertakings of both the government and the private sectors, the
following survey standards, equipments and procedures are hereby adopted
for the guidance and compliance of all concerned.

A. Cadastral Land Surveys

Cadastral Survey shall cover the survey of extensive areas of
lands for more accurate delineation of timberland and classified A &
D lands within a municipality, the political boundary delineation, and
the individual survey of lots for registration proceedings, agricultural
development, or for any other purposes deemed necessary.

The method, conduct and terms of survey shall be governed by the
Lands Administrative Order No. 4 dated 3 July 1980, more commonly
referred to as the Manual for Land Surveys in the Philippines, and the
Most Recent Version of Instruction to Bidders being adopted by the
Department, except for provisions superseded by the introduction of new
policy guidelines and procedures introduced by this Administrative Order
or subsequent issuance that may later be signed.

B. Survey of Integrated Social Forestry (ISF) Areas:

1)      The perimeter survey of the ISF shall be surveyed with
procedures precision and standards prescribed for the kind of survey and
using calibrated and registered surveying instruments that could give
the required precision.

2)      In case of the on-going Cadastral Projects, the perimeter
survey of ISF areas shall be surveyed concurrently with the lot
boundary surveys in A & D areas and projected in Cadastral or Social
Forestry Maps.

3)      The perimeter survey of the ISF areas upon issuance of
the survey authority by the RED shall be conducted based on the sketches
prepared by the Land Evaluation and Survey Team with the guidance of
the Forestry Officer assigned by the RED to the project.

4)      The survey shall be tied to any reference point of known
position established by a circuit or loop traverse of tertiary
precision. If EDM is used, it shall be periodically tested over a line
of known length to verify the instrument constant and check for
frequency drift.

5)      The corners of the prominent turns of the boundaries
shall 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. The
rest to 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 or living edible fruit trees.

6)      The parcellary mapping of the individual ISF awards
within the ISF areas shall be undertaken by the Administration using
instrument of lesser precision or lower standards such as tachimetry or
stadia methods.

7)      Preparation of Social Forestry Maps

7.1          In the case of perimeter survey and parcellary
survey of the ISF areas in previously cadastrally and not yet
cadastrally surveyed municipalities, the survey shall be plotted on the
isolated survey plan form and the survey symbol shall be “SF-Region Code
Number “.  The plan and the survey record shall be verified and
certified correct only by the Chief, Regional Surveys Division after its
verification to prevent its use in titling.

7.2          In the case of an on-going cadastral, an overlay
of the cadastral map segregating the forest land shall be prepared. This
overlay shall be prepared similar to the cadastral map in all aspect
but shall be called SFM instead of CM.  The perimeter survey of the ISF
parcels shall be plotted on the SFM and numbered consecutively from
ISF-Parcel 1, ISF-Parcel 2, etc.

C. Mineral Land Surveys :

1)      Mineral 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 or production sharing agreement and other mining
agreement.  These surveys shall now be executed consistent with the
standards and precision prescribed for isolated land surveys per Manual
for Lands Surveys of the Philippines.

2)      The mineral survey shall be executed like any isolated
survey tied to acceptable reference point of known position, using
registered and calibrated instruments such as transit and tapes or
Theodolite and EDM.

3)      The survey shall be plotted on the isolated survey plan form and given the appropriate survey symbol.

4)      The previously approved property surface surveys and
other occupancies shall be plotted in dashes on the mineral land survey
plan.

5)      The mineral land survey returns shall be submitted to the
Regional Surveys Division thru the Mines and Geo-Sciences Sector for
verification and approval.  The plan shall bear the words “Not for
Registration in Court”.

D. Land Classification Surveys :

1)      Classified forests shall be delimited by a survey of
tertiary precision using at least Forestry Transits and prescribed
tapes. Photo maps or enlarged rectified aerial photographs may be used
as guide in the delimitation of the forest lands before the actual
ground survey.

2)      As far as it is practicable, the boundary shall be marked
with parallelepiped concrete markers 15 x 15 x 50 cm. set 40 cm. below
surface of the ground leaving a projection of 10 cm. above ground with
“FZ” and marker number engraved on top, wherever concrete monument iron
spikes, is not practicable, the corner shall be “x” marks etched on big
immovable boulders with exposed surface of at least one meter in
diameter defined by natural features, such as creeks, streams, etc., the
centerline of which is located by intersection method or by stadia
method.

3)      The delimitation survey shall be plotted in a Land Classification Map (LC Map).

4)      The surveys of Land Classification shall be under the responsibility of NAMRIA.

5)      The land use/capability survey shall be the responsibility of the Forest Management Sector.

E. New methodologies and instrumentation such as photogrammetric
method and satellite surveying which will be accepted as alternate or a
supplemental survey methodologies in the conduct of the above surveys
may be approved by the Lands Management Bureau.

F. Geodetic Control Survey

The establishment of first, second and third order geodetic network control points shall be the responsibility of the NAMRIA.

G. The Field Network Survey Parties.

1)      The Field Network Survey Parties shall densify the
existing geodetic control points from the 25 or 10 kilometer density
establishment by  NAMRIA to service the Cadastral Survey Program.

2)      The FNSP shall correct previously established Bureau of
Lands Location Monuments ( BLLMs), Barangay or Barrio Boundary Monuments
( BBMs), Provincial Boundary Monuments ( PBMs), Municipal Boundary
Monuments ( MBMs) and other reference points of cadastral surveys to the
Global Positioning System (GPS) for transformation into one system to
be used in the Cadastral Mapping.

3)      To be effective and efficient, the FNSP shall be under
the direct administrative control of the RED thru the RTD for Lands with
the Surveys Division providing the technical guidance and assistance.

H. Standard Maps

1) To avoid confusion as to which agency to approach for
particular map requirements and to isolate sole responsibilities on the
production, update, maintenance and issuance of maps or portion of
information thereof, only the listed agencies shall be made responsible
for the maps acknowledged to be under their jurisdiction.

All other information coming from other agencies outside their acknowledged jurisdiction shall be deemed unofficial.

The symbology used, layout and other information indicated on the
map shall be determined by the agency responsible for its preparation.
The symbols however for those features which are common on all maps like
roads, railroads, bridges, etc. shall be the same as those appearing in
the topographic maps.

The proposed map assignments per agency and the scales and sizes at which the maps are to be produced are as listed :

Agency	Maps/Plans	Maps Size	Scale	Remarks
a.   Lands Service	Cadastral Maps	54×54 cm.	1:4000	Presently being adopted
			1:2000	Sectoral map being adopted
			1:1000	-do-
			1:500	-do-
			1:250	-do-
	Barangay Municipal Boundary Index Maps (BBIM, MBIM)	54×54 cm. and its derivatives	1:4000	being adopted
	Isolated Survey Plan	42×54 cm. and its derivatives	1:100	Verification and approval
b.   Mines Service	Geologic Map	75×55 cm.	1:50000	Presently being adopted
	Mineral Land Survey Map	54×54 cm.	1:250000	-do-
	Phil. Mineral Rights Master Maps	60×75 cm.	1:250000	-do-
c.   Forestry Service	Integrated Social Forestry Maps	54×54 cm.	1:4000 except standard size	-do-
	Forest License Maps	54×54 cm.	1:1000 and its derivatives	-do-
d.   NAMRIA	Land Classification Maps	Variable	1:25000	Presently being adopted (previously on scale 1:20000)

The above-mentioned maps shall be identified by sheet number explained in Annex A.

In the production of maps, the traverse mercator projection shall be
used.  The UTM shall be used for all topographic maps on scales 1:10000
and smaller. A pair of PTM (PPCS) lines shall be shown on topographic
maps to aid local surveyors and other users familiar with the use of the
Philippine Plane Coordinate System.  For maps on scales larger than
1:10000, this system (PPCS )shall remain to be used.

Adopted: 13 Aug. 1990

(SGD.) FULGENCIO S. FACTORAN, JR.
Secretary