Indicator C5 — Pattern Consistent with Contract Splitting

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

Pattern Consistent with Contract Splitting

Multiple similar contracts to the same contractor/DEO just under a threshold in a short window.

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

Indicator: 3 contracts awarded to ALPHA & OMEGA GEN CONTRACTOR & DEVELOPMENT CORP by the same office started within 34 days, each between ₱42.5M and ₱50M (just under the ₱50M threshold), with 3 in the same municipality. It is possible that the river protection works were divided into separate contracts for different sections or phases of the river.

Public record entityConstruction of Revetment/Riverwall at Binan River (Phase 2) (staggered) near Barangay San Vicente, Binan City, Laguna

LocationCITY OF BIÑAN (LAGUNA), LAGUNA, Region IV-AContract 22DI0107

Amount₱49,472,556.72 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 m

Before capture: 2021-03-28 · Maxar

After capture: 2025-04-25 · Maxar

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

Checked: October 22, 2026

This is a textbook C5 case: three contracts, same contractor and DEO, all just under the ₱50M threshold, started within 34 days, and all in the same municipality. The titles refer to similar works (riverwall/revetment/river protection) along the Biñan River, with some specifying different barangays or phases, but C5 does not require title overlap or distinction. The code has already confirmed the cluster math and location. There is no evidence of a data artifact.

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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 Revetment/Riverwall at Binan River (Phase 2) (staggered) near Barangay San Vicente, Binan City, Laguna22DI0107	100%	August 4, 2023	August 4, 2023	No target date from DPWH, so lateness cannot be computed	completedsumbong source

Start: July 5, 2022 · Source fetched October 21, 2026

Rule Definition

≥3 contracts within 120 days, each 85–100% of ₱50M threshold, similar titles.

Triggering Data & citations

Cluster of contracts just under procurement threshold with similar scope

{
  "deo": "Laguna 2nd District Engineering Office",
  "contractId": "22DI0107",
  "contractor": "ALPHA & OMEGA GEN CONTRACTOR & DEVELOPMENT CORP",
  "windowDays": 120,
  "clusterSize": 3,
  "thresholdPhp": 50000000,
  "contractCostPhp": 49472556.72,
  "averageTitleSimilarity": 0.8613724485146712
}

Source documents

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

Possible Innocent Explanations

Legitimate multi-lot procurement
Different sites under same program