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 22DN0032 and 23DN0066 have near-identical descriptions about 658 m apart (funding years 2022, 2023; ₱29.40M, ₱48.99M). Worth checking whether they cover the same works. The second project may be a planned continuation or expansion of the first phase.

Public record entityConstruction of Flood Control Structure, Sitio Upper Kilingan Phase 2, Barangay San Jose, Antipolo City

LocationCITY OF ANTIPOLO (RIZAL), RIZAL, Region IV-AContract 23DN0066

Amount₱48,990,287.77 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: 2021-12-03 · Maxar

After capture: 2021-12-03 · Vantor

No imagery since construction began — latest capture 2021-12-03

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 0.80

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

The two projects have near-identical titles at the same sitio and barangay, funded in consecutive years, and are only 658 meters apart. The only distinguishing marker is 'Phase 2' in the second title, while the first 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 necessary records 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, Sitio Upper Kilingan Phase 2, Barangay San Jose, Antipolo City23DN0066Flood control	100%	February 28, 2024	December 20, 2023	—	completedsumbong source

Start: April 5, 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": "23DN0066",
  "fundingYear": 2023,
  "municipality": "CITY OF ANTIPOLO (RIZAL)",
  "distanceMeters": 658.0613145779399,
  "titleSimilarity": 0.9549923352069495
}

Source documents

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

Possible Innocent Explanations

Phased construction seasons
Upstream/downstream segments recorded separately