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 23EA0040 and 22EA0236 have near-identical descriptions about 207 m apart (funding years 2022, 2023; ₱4.95M, ₱5.88M). Worth checking whether they cover the same works. It is possible that the second project is a continuation or extension of the first, or covers a different portion of the same area.

Public record entityConstruction of Flood Control Structure at Brgy. Bachao Ilaya, Gasan, Marinduque

LocationGASAN (MARINDUQUE), MARINDUQUE, Region IV-BContract 22EA0236

Amount₱5,877,868.15 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 m

Before capture: 2015-09-25 · Maxar

After capture: 2015-09-25 · Vantor

No imagery since construction began — latest capture 2015-09-25

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 titles are near-identical, both refer to 'Construction of Flood Control Structure' at (Brgy./Barangay) Bachao Ilaya, Gasan, Marinduque, with no distinguishing markers such as phase, package, section, or different sites. The only differences are minor wording ('Barangay' vs 'Brgy.' and 'at'), which are not distinguishing per the rules. The projects are about 207 meters apart and funded in consecutive years, which fits the pattern 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 Flood Control Structure at Brgy. Bachao Ilaya, Gasan, Marinduque22EA0236Flood control	100%	September 4, 2022	September 4, 2022	—	completedsumbong source

Start: March 30, 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": "22EA0236",
  "coordinates": {
    "lat": 13.3071,
    "lon": 121.8723
  },
  "municipality": "GASAN (MARINDUQUE)",
  "distanceMeters": 206.84535042843584,
  "titleSimilarity": 0.9878048780487805
}

Source documents

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

Possible Innocent Explanations

Data not yet available (source: rule metadata)