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 22A00259 and 22A00258 have near-identical descriptions about 431 m apart (funding year 2022; ₱96.50M, ₱96.50M). Worth checking whether they cover the same works. It is possible that 'Sitio Nagrebcan' and 'Sitio Nagrebcan 2' refer to adjacent or related areas, or that one title omitted the number by mistake.

Public record entityConstruction of Flood Control Structure along Bongo River, Right Bank, Laoag River Basin Flood Control and Sabo Project, Brgy. Poblacion, Sitio Nagrebcan 2, Nueva Era, Ilocos Norte

LocationNUEVA ERA (ILOCOS NORTE), ILOCOS NORTE, Region IContract 22A00259

Amount₱96,499,985.94 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: 2022-01-02 · Maxar

After capture: 2023-02-02 · 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 nearly identical, with the only difference being the presence of '2' in 'Sitio Nagrebcan 2' in one title and not in the other. There are no phase, package, or section markers, and both are in the same barangay and municipality, funded in the same year, by the same contractor, and are only 431 meters apart. The difference could be a minor site distinction or a data entry inconsistency, but this fits the rule's criteria for a potentially overlapping or duplicate 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 Bongo River, Right Bank, Laoag River Basin Flood Control and Sabo Project, Brgy. Poblacion, Sitio Nagrebcan 2, Nueva Era, Ilocos Norte22A00259Flood control	100%	November 11, 2022	November 11, 2022	—	completedsumbong source

Start: April 7, 2022 · 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": "22A00259",
  "coordinates": {
    "lat": 17.905869,
    "lon": 120.6631
  },
  "municipality": "NUEVA ERA (ILOCOS NORTE)",
  "distanceMeters": 431.237305853935,
  "titleSimilarity": 0.9945054945054945
}

Source documents

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