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 23F00029 and 22F00020 have near-identical descriptions about 62 m apart (funding years 2022, 2023; ₱125.34M, ₱192.71M). Worth checking whether they cover the same works. It is possible that the second contract is a continuation or extension of the first project.

Public record entityConstruction of Quinale "A" River Flood Mitigation Structure (Polangui and Libon Section), Polangui, Albay

LocationPOLANGUI (ALBAY), ALBAY, Region VContract 22F00020

Amount₱192,707,498.10 sumbong source

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

Satellite before / after

Esri Wayback · ~0.46 mLocation approximate

Before capture: 2021-02-16 · Maxar

After capture: 2025-05-31 · 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 titles are near-identical, with no distinguishing markers such as different phases, sections, or locations. The only differences are minor (the use of quotation marks and the inclusion of 'and Libon' in the location), which do not clearly indicate different works. The projects are only 62 meters apart and funded in consecutive years, which fits the rule's criteria for a potentially duplicate or overlapping project. 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 Quinale "A" River Flood Mitigation Structure (Polangui and Libon Section), Polangui, Albay22F00020Flood control	100%	January 24, 2023	January 24, 2023	—	completedsumbong source

Start: March 21, 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": "22F00020",
  "fundingYear": 2022,
  "municipality": "POLANGUI (ALBAY)",
  "distanceMeters": 61.876157043653706,
  "titleSimilarity": 0.9738748631375245
}

Source documents

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

Possible Innocent Explanations

Phased construction seasons
Upstream/downstream segments recorded separately