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 23DD0227 and 23DD0066 have near-identical descriptions about 1397 m apart (funding year 2023; ₱96.50M, ₱96.50M). Worth checking whether they cover the same works. One contract may cover a specific section (Tipaz), while the other may refer to a broader or overlapping area along the same river.

Public record entityConstruction of Revetment along Malaking Ilog River (Tipaz Section), San Juan, Batangas

LocationSAN JUAN (BATANGAS), BATANGAS, Region IV-AContract 23DD0227

Amount₱96,500,000.00 sumbong source

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

Satellite before / after

Esri Wayback · ~0.31 mLocation approximate

Before capture: 2023-03-06 · 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 0.80

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

The only distinguishing marker is 'Tipaz Section' in the first title, while the second title is generic and does not specify a section. According to the rule, if one title has a section/phase marker and the other does not, this is a classic 'unlabelled twin' case and should be published. The distance (1397 m) is well above the threshold for 'identical coordinates', but the titles are otherwise near-identical and both are in the same municipality, funded in the same year, and have the same contract amount. Innocent explanation: the generic title may refer to a larger or overlapping area, or the same section may have been funded under two contracts.

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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 Revetment along Malaking Ilog River (Tipaz Section), San Juan, Batangas23DD0227Flood control	100%	February 23, 2024	February 1, 2024	No target date from DPWH, so lateness cannot be computed	completedsumbong source

Start: May 8, 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": "23DD0227",
  "coordinates": {
    "lat": 13.8357,
    "lon": 121.42428
  },
  "municipality": "SAN JUAN (BATANGAS)",
  "distanceMeters": 1397.3877034951433,
  "titleSimilarity": 0.8987341772151899
}

Source documents

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

Satellite before / after

Project completion

Rule Definition

Triggering Data & citations

Where this project sits