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 22AD0074 and 22AD0088 have near-identical descriptions at the same coordinates (funding year 2022; ₱47.53M, ₱9.51M). Worth checking whether they cover the same works. It is possible that the smaller contract covers only a portion of the larger project's scope, or is a subcomponent.

Public record entityConstruction of Allangigan-Oaig Daya-San Nicolas-Darapidap Flood Control, Candon City, Ilocos Sur

LocationCITY OF CANDON (ILOCOS SUR), ILOCOS SUR, Region IContract 22AD0074

Amount₱47,529,460.53 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: 2019-03-03 · Maxar

After capture: 2019-03-03 · Vantor

No imagery since construction began — latest capture 2019-03-03

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

Click imagery to enlarge

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How this was checked

publish · confidence 0.85

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

Both projects have identical coordinates and near-identical titles, with the only difference being that one title is a subset of the other (the first title lists more locations, but the second is fully contained within the first). There are no phase, package, or section markers, and both are in the same municipality, same year, and by the same contractor. This fits the guidance for publishing as a possible duplicate or overlapping scope.

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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 Allangigan-Oaig Daya-San Nicolas-Darapidap Flood Control, Candon City, Ilocos Sur22AD0074Flood control	100%	August 28, 2022	November 3, 2023	—	completedsumbong source

Start: April 4, 2022 · Source fetched October 21, 2026

Rule Definition

Title similarity + distance or shared coordinates within municipality.

Triggering Data & citations

Identical coordinates shared by multiple contracts

{
  "contractId": "22AD0074",
  "coordinates": {
    "lat": 17.180834,
    "lon": 120.45417
  },
  "otherContracts": [
    "22AD0088"
  ]
}

Source documents

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

Possible Innocent Explanations

Multi-component contracts sharing a single pin
GIS centroid placement