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 23OB0110 and 22OB0243 have near-identical descriptions about 131 m apart (funding years 2022, 2023; ₱46.53M, ₱75.34M). 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 nearby but not identical section of the creek.

Public record entityConstruction of Slope Protection along Salapan Creek, Barangay Salapan, San Juan City

LocationCITY OF SAN JUAN (METROPOLITAN MANILA), SAN JUAN CITY, National Capital RegionContract 23OB0110

Amount₱46,526,297.54 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: 2021-11-03 · Maxar

After capture: 2025-04-25 · 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

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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 refer to slope protection along Salapan Creek in San Juan City, and are only 131 meters apart. The only difference is the mention of 'Barangay Salapan' in one title, which is not a distinguishing marker since the other title is less specific, not different. There are no phase, package, or section markers, and both are in the same municipality. This fits the guidance for publishing as a possible duplicate or overlapping project.

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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 along Salapan Creek, Barangay Salapan, San Juan City23OB0110	100%	September 18, 2023	June 18, 2023	No target date from DPWH, so lateness cannot be computed	completedsumbong source

Start: February 6, 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": "23OB0110",
  "coordinates": {
    "lat": 14.6120825,
    "lon": 121.02865
  },
  "municipality": "CITY OF SAN JUAN (METROPOLITAN MANILA)",
  "distanceMeters": 131.40474008836264,
  "titleSimilarity": 0.881578947368421
}

Source documents

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

Satellite before / after

Project completion

Rule Definition

Triggering Data & citations

Where this project sits