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 23DL0151 and 23DL0158 have near-identical descriptions at the same coordinates (funding year 2023; ₱10.69M, ₱9.90M). Worth checking whether they cover the same works. One contract may cover a specific structure within a larger complex, or the titles may reflect slightly different scopes within the same site.

Public record entityConstruction of Slope Protection at Brgy. Munting Parang, Tagkawayan, Quezon

LocationTAGKAWAYAN (QUEZON), QUEZON, Region IV-AContract 23DL0158

Amount₱9,900,000.00 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 m

Before capture: 2021-06-26 · Maxar

After capture: 2025-10-11 · 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 project titles are near-identical, both at the exact same coordinates, in the same barangay and municipality, with the same contractor and funding year. The only difference in the titles is the presence of 'Resiliency Complex' in one, which is not a clear phase/section/segment marker or a different site. There are no distinguishing markers such as phase, package, or different locations. 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 Slope Protection at Brgy. Munting Parang, Tagkawayan, Quezon23DL0158	100%	October 6, 2023	October 6, 2023	—	completedsumbong source

Start: April 3, 2023 · Source fetched October 21, 2026

Rule Definition

Title similarity + distance or shared coordinates within municipality.

Triggering Data & citations

Identical coordinates shared by multiple contracts

{
  "contractId": "23DL0158",
  "coordinates": {
    "lat": 13.962336,
    "lon": 122.546295
  },
  "otherContracts": [
    "23DL0151"
  ]
}

Source documents

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

Possible Innocent Explanations

Multi-component contracts sharing a single pin
GIS centroid placement
One contract may cover a specific structure within a larger complex, or the titles may reflect slightly different scopes within the same site.