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 23GB0050 and 22GB0013 have near-identical descriptions about 2893 m apart (funding years 2022, 2023; ₱33.76M, ₱1.69M). Worth checking whether they cover the same works. It is possible that these are sequential phases or extensions of the same flood control project, but the titles do not specify this.

Public record entityConstruction of Flood Control Structure along Sibalom River, Barangay Bongsod, Sibalom, Antique

LocationSIBALOM (ANTIQUE), ANTIQUE, Region VIContract 23GB0050

Amount₱33,762,056.50 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: 2020-01-11 · Maxar

After capture: 2025-10-20 · 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 projects have identical titles with no distinguishing markers, are both in Barangay Bongsod, Sibalom, Antique, and are funded in consecutive years. The distance between the coordinates (2893 m) is above the threshold for 'identical location', but the titles do not specify different sites or phases, so it is plausible these refer to the same or overlapping works. All necessary records and URLs are present.

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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 Sibalom River, Barangay Bongsod, Sibalom, Antique23GB0050Flood control	100%	December 20, 2023	December 9, 2023	—	completedsumbong source

Start: April 11, 2023 · 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": "23GB0050",
  "coordinates": {
    "lat": 10.806591,
    "lon": 121.984085
  },
  "municipality": "SIBALOM (ANTIQUE)",
  "distanceMeters": 2892.682304991302,
  "titleSimilarity": 1
}

Source documents

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