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 23BC0019 and 24BC0065 have near-identical descriptions about 1739 m apart (funding years 2023, 2024; ₱96.50M, ₱48.23M). Worth checking whether they cover the same works. It is possible that these are sequential or adjacent segments of a longer seawall project, but the titles do not specify this.

Public record entityConstruction of Seawall along the Shoreline of Ballesteros, Cagayan

LocationBALLESTEROS (CAGAYAN), CAGAYAN, Region IIContract 24BC0065

Amount₱48,234,966.56 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: 2018-04-23 · Maxar

After capture: 2025-11-07 · 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

Click imagery to enlarge

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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 contracts have exactly the same title with no distinguishing markers, are both in Ballesteros, Cagayan, and are about 1.7 km apart. There is no phase, package, section, or location marker to distinguish them, and the only difference is the funding year. This fits the rule's publish criteria for possible duplicate or overlapping works.

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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 Seawall along the Shoreline of Ballesteros, Cagayan24BC0065Flood control	100%	August 12, 2024	April 20, 2024	—	completedsumbong source

Start: February 7, 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": "24BC0065",
  "coordinates": {
    "lat": 18.40708,
    "lon": 121.51827
  },
  "municipality": "BALLESTEROS (CAGAYAN)",
  "distanceMeters": 1739.4394092372283,
  "titleSimilarity": 1
}

Source documents

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