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 23A00129 and 24A00156 have near-identical descriptions about 875 m apart (funding years 2023, 2024; ₱144.74M, ₱19.80M). Worth checking whether they cover the same works. It is possible that the second project is a continuation or extension of the first, or covers a nearby but distinct section of the river.

Public record entityConstruction of Flood Control Structure, Aringay River Basin, Barangay Rizal, Tubao, La Union

LocationTUBAO (LA UNION), LA UNION, Region IContract 24A00156

Amount₱19,798,959.79 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 0.95

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

The two project titles are near-identical, both refer to flood control structures at Aringay River/Aringay River Basin in Barangay Rizal, Tubao, La Union, and are only 875 meters apart. There are no phase, package, section, or other distinguishing markers in either title, and the only word differences ('along' vs 'basin') do not clearly indicate different works. The evidence is complete and meets the rule's criteria for a plausible 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, Aringay River Basin, Barangay Rizal, Tubao, La Union24A00156Flood control	100%	December 5, 2024	August 2, 2024	—	completedsumbong source

Start: June 24, 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": "24A00156",
  "coordinates": {
    "lat": 16.363342,
    "lon": 120.43484
  },
  "municipality": "TUBAO (LA UNION)",
  "distanceMeters": 874.5731740188693,
  "titleSimilarity": 0.9405405405405406
}

Source documents

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