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 22NG0030 and 23N00133 have near-identical descriptions about 376 m apart (funding years 2022, 2023; ₱96.50M, ₱115.80M). Worth checking whether they cover the same works. It is possible that the second project is a continuation or expansion of the first, or covers a nearby stretch of the same river.

Public record entityConstruction of Flood Mitigation Structure along Hinagasan River, Barangay Mabuhay, Sison, Surigao del Norte

LocationSISON (SURIGAO DEL NORTE), SURIGAO DEL NORTE, Region XIIIContract 22NG0030

Amount₱96,499,885.76 sumbong source

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

Satellite before / after

Esri Wayback · ~0.31 mLocation approximate

Before capture: 2018-06-16 · Maxar

After capture: 2025-09-06 · 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 that one specifies 'Barangay Mabuhay' while the other does not specify any barangay. There are no phase, package, or section markers, and the locations are only 376 meters apart. According to the rule, if one title has a barangay marker and the other does not, this is considered a potential unlabelled twin and should be published. The evidence is complete and the public can check the records.

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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 Mitigation Structure along Hinagasan River, Barangay Mabuhay, Sison, Surigao del Norte22NG0030Flood control	100%	July 27, 2023	July 27, 2023	—	completedsumbong source

Start: March 11, 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": "22NG0030",
  "coordinates": {
    "lat": 9.679461,
    "lon": 125.52641
  },
  "municipality": "SISON (SURIGAO DEL NORTE)",
  "distanceMeters": 375.7858473701597,
  "titleSimilarity": 0.9090909090909091
}

Source documents

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