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 23I00002 and 22I00024 have near-identical descriptions about 118 m apart (funding years 2022, 2023; ₱110.87M, ₱96.50M). Worth checking whether they cover the same works. It is possible that the second project is a legitimate extension or continuation of the first.

Public record entityConstruction of Catarman Flood Control structure, Catarman River Basin, Barangay Macagtas-Ipil-Ipil Section, Catarman, Northern Samar

LocationCATARMAN (CAPITAL) (NORTHERN SAMAR), NORTHERN SAMAR, Region VIIIContract 23I00002

Amount₱110,865,287.60 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: 2021-04-01 · Maxar

After capture: 2021-04-01 · Vantor

No imagery since construction began — latest capture 2021-04-01

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 titles are near-identical and refer to the same section (Macagtas-Ipil-Ipil/Brgy. Macagtas-Brgy. Ipil-Ipil) in Catarman, Northern Samar, with no distinguishing phase, package, or segment markers. The only differences are minor wording and the addition of 'Extension' in the second title, which does not clearly indicate a separate work. The projects are about 118 meters apart and funded in consecutive years, which fits the rule's intent to flag possible duplicate or overlapping works. All required records and fields 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 Catarman Flood Control structure, Catarman River Basin, Barangay Macagtas-Ipil-Ipil Section, Catarman, Northern Samar23I00002Flood control	100%	January 8, 2024	December 15, 2023	—	completedsumbong source

Start: March 15, 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": "23I00002",
  "coordinates": {
    "lat": 12.491692,
    "lon": 124.64627
  },
  "municipality": "CATARMAN (CAPITAL) (NORTHERN SAMAR)",
  "distanceMeters": 118.01518226934157,
  "titleSimilarity": 0.9300699300699301
}

Source documents

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