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 24DH0011 and 23DH0014 have near-identical descriptions about 817 m apart (funding years 2023, 2024; ₱77.89M, ₱93.57M). Worth checking whether they cover the same works. It is possible that these are sequential or adjacent segments of river control works funded in different years.

Public record entityConstruction of River Control along Pagsanjan River, Lumban Section, Lumban, Laguna

LocationLUMBAN (LAGUNA), LAGUNA, Region IV-AContract 24DH0011

Amount₱77,887,135.00 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: 2020-03-27 · Maxar

After capture: 2025-05-12 · 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 project titles are near-identical, with the only difference being the addition of 'Lumban, Laguna' in the first title, which is not a distinguishing marker since both projects are in Lumban, Laguna. There are no phase, package, section, or other markers that would indicate these are distinct works. The projects are about 817 meters apart, which is above the 100m threshold, but the rule is about near-duplicate titles within the same municipality, and the code has already flagged this as a potential anomaly. The evidence is complete and checkable.

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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 River Control along Pagsanjan River, Lumban Section, Lumban, Laguna24DH0011Flood control	100%	January 5, 2025	July 18, 2024	—	completedsumbong source

Start: February 23, 2024 · 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": "24DH0011",
  "fundingYear": 2024,
  "municipality": "LUMBAN (LAGUNA)",
  "distanceMeters": 816.5131659005842,
  "titleSimilarity": 0.9614457831325302
}

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