Indicator X-source — Cross-Source Mismatch (PhilGEPS vs DPWH)

AI-verified / Na-verify ng AI Data as of October 21, 2026

Cross-Source Mismatch (PhilGEPS vs DPWH)

Linked PhilGEPS award amount or awardee disagrees with Sumbong contract row.

This is a statistical anomaly or indicator worth examining — not proof of wrongdoing, fraud, or corruption against any person.

Indicator: PhilGEPS award 21NH0092 lists ₱74.30M to ARQ BUILDERS, while DPWH records contract 21NH0092 at ₱81.72M to ARQ BUILDERS. The contract amount may have increased after the award due to approved variation orders or scope changes.

Public record entityConstruction of Dike Revetment along Liangan River, Lianga, Surigao del Sur

LocationSURIGAO DEL SUR, Region XIIIContract 21NH0092

Amount₱81,722,678.26 sumbong source

Only contractors and government agencies named in public procurement records are shown. Private individuals are not named.

Satellite before / after

Esri Wayback · ~0.31 mLocation approximate

Before capture: 2019-08-10 · Maxar

After capture: 2019-08-10 · Vantor

No imagery since construction began — latest capture 2019-08-10

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 0.98

Model: gpt-4.1

Prompt: v4.1

Checked: October 22, 2026

There is a clear amount mismatch between the PhilGEPS award (₱74.30M) and the DPWH contract (₱81.72M) for the same contract ID (21NH0092), with both sources naming the same contractor (ARQ BUILDERS). The evidence is complete and the anomaly is genuinely unusual, as the contract amount is significantly higher than the awarded amount.

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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 Dike Revetment along Liangan River, Lianga, Surigao del Sur21NH0092Flood control	100%	December 30, 2022	January 9, 2023	No target date from DPWH, so lateness cannot be computed	completedsumbong source

Start: January 18, 2022 · Source fetched October 21, 2026

Rule Definition

Compares linked award and project contractor/cost above tolerance.

Triggering Data & citations

Linked PhilGEPS award fields disagree with DPWH/Sumbong contract record

{
  "linkId": "169c4b67-d12d-4605-84c5-34af9e9c1c4c",
  "awardId": "97bbcc78-ba67-47f2-b31b-e865cbe457af",
  "linkScore": 1,
  "nameMismatch": false,
  "amountMismatch": true,
  "awardAmountPhp": 74296837.66,
  "linkValidation": "philgeps_ref equals DPWH contract ID",
  "projectCostPhp": 81722678.26,
  "philgepsAwardee": "ARQ BUILDERS"
}

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