Indicator C3 — Duplicate or Near-Duplicate Projects

AI-verified / Na-verify ng AI Data as of October 21, 2026

Duplicate or Near-Duplicate Projects

Very similar descriptions within ~100m or identical coordinates across contracts/years.

This is a statistical anomaly or indicator worth examining — not proof of wrongdoing, fraud, or corruption against any person.

Indicator: contracts 23A00130 and 24A00153 have near-identical descriptions about 73 m apart (funding years 2023, 2024; ₱144.72M, ₱144.75M). Worth checking whether they cover the same works. It is possible that the second project is a continuation or extension covering only Halog East, or that the first project covered both areas and the second focused on one.

Public record entityConstruction of Flood Control Structure Along Aringay River, Barangay Halog East, Tubao, La Union

LocationTUBAO (LA UNION), LA UNION, Region IContract 24A00153

Amount₱144,749,737.00 sumbong source

Only contractors and government agencies named in public procurement records are shown. Private individuals are not named.

Satellite before / after

Esri Wayback · ~0.5 mLocation approximate

Before capture: 2023-03-23 · Maxar

After capture: 2025-02-02 · Vantor

Satellite comparison for public reference — not proof of completion or non-completion.

Imagery may not show small or linear works; no visible change is not evidence of wrongdoing.

Imagery © Esri, Maxar, Earthstar Geographics, and the GIS User Community

Caveats & resolution

Esri World Imagery Wayback (~0.5–1 m); dates are archive release dates, not capture timestamps.
Imagery may not show small or linear works; no visible change is not evidence of wrongdoing.
DPWH coordinates can be approximate; marker shows the imagery center (may be snapped to riverbank/coast).

Disclaimer

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How this was checked

publish · confidence 0.85

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

The two project titles are near-identical, with the only difference being that the first title includes 'Halog West' while the second does not. There are no phase, package, or section markers, and both projects are at nearly the same coordinates (73 meters apart) with the same contractor and similar costs in consecutive years. The only distinguishing word is 'West', which refers to an area included in the first title but not the second. Since one title is fully contained in the other and there is no explicit marker indicating these are separate phases or packages, this matches the guidance for publishing as a possible duplicate or overlapping project.

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Project completion

Schedule fields from DPWH transparency portal records and the Sumbong sa Pangulo flood-control list — not inferred beyond those columns.

Reported complete (DPWH): 1Ongoing: 0Delayed: 0Status unknown: 0

Project	Prog.	Target end	Actual end	Days late	Status
Construction of Flood Control Structure Along Aringay River, Barangay Halog East, Tubao, La Union24A00153Flood control	100%	January 11, 2025	July 26, 2024	—	completedsumbong source

Start: March 15, 2024 · Source fetched October 21, 2026

Rule Definition

Title similarity + distance or shared coordinates within municipality.

Triggering Data & citations

Similar project description near another contract in the same municipality

{
  "contractId": "24A00153",
  "coordinates": {
    "lat": 16.356512,
    "lon": 120.428734
  },
  "municipality": "TUBAO (LA UNION)",
  "distanceMeters": 73.35588379004687,
  "titleSimilarity": 0.9371980676328503
}

Source documents

sumbong — https://raw.githubusercontent.com/rukku/sumbongsapangulo.ph-datasets/main/flood_control_projects.geojsonFetched October 21, 2026