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 23DE0046 and 23DE0049 have near-identical descriptions about 139 m apart (funding year 2023; ₱49.00M, ₱31.43M). Worth checking whether they cover the same works. It is possible that the second contract is a continuation or additional phase of the same project area.

Public record entityConstruction of Flood Control Structure along Calumpang River (Section 6), Batangas City

LocationBATANGAS CITY (CAPITAL) (BATANGAS), BATANGAS, Region IV-AContract 23DE0046

Amount₱49,000,000.00 sumbong source

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

Satellite before / after

Esri Wayback · ~0.5 mLocation approximate

Before capture: 2019-05-03 · Maxar

After capture: 2025-06-09 · 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 0.85

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

The two project titles are nearly identical, both refer to 'Construction of Flood Control Structure along Calumpang River (Section 6), Batangas City', and are only 139 meters apart. The only difference is that one title adds 'Phase, 2', while the other has no phase marker. Per rule guidance, if one title has a phase marker and the other does not, this is a classic 'unlabelled twin' case and should be published. All relevant record IDs 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 Calumpang River (Section 6), Batangas City23DE0046Flood control	100%	November 4, 2023	November 4, 2023	No target date from DPWH, so lateness cannot be computed	completedsumbong source

Start: February 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": "23DE0046",
  "coordinates": {
    "lat": 13.76207,
    "lon": 121.06911
  },
  "municipality": "BATANGAS CITY (CAPITAL) (BATANGAS)",
  "distanceMeters": 138.87493626740005,
  "titleSimilarity": 0.9513513513513514
}

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