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Quantity Verification

Volume Verification

Independent quantity documentation for stockpiles, excavation, grading, and cut/fill decisions where the numbers directly affect payment certification and dispute resolution.

Earthworks and stockpile site for volume verification
When this service makes sense

Best fit for quantity-critical decisions

  • Earthworks and excavation contractors verifying cut/fill quantities before invoicing
  • Owner teams or quantity surveyors reviewing contractor payment claims
  • Projects with stockpile tracking requirements — aggregate, topsoil, select fill
  • Any situation where a disputed quantity figure needs independent documentation

Typical deliverables

  • Decision summary for quantity review — key differences flagged up front
  • RTK accuracy statement: NTRIP-corrected, 1–3 cm horizontal — accepted methodology for payment certification in Ontario and Quebec
  • Volume table by polygon or work zone
  • DSM, classified point cloud, and comparison visuals
  • Methodology and quality notes, accuracy certificate structure
  • Supporting archive for dispute records

Typical use cases

  • Payment certification support for earthworks contracts
  • Independent quantity checking before owner approval
  • Baseline and post-event volume comparisons
  • Stockpile inventory — aggregate, topsoil, granular materials
  • Quantity dispute prevention and third-party records
Case study — Ottawa earthworks contract
Situation
Contractor invoices for 22,000 m³. Owner's engineer estimates 18,400 m³. $90,000 difference at $25/m³. Neither party has independent data. Dispute heading to engineering resolution.
Engagement
Pre- and post-excavation RTK survey. SITE INTEL measures 19,820 m³ ± 2%. Accuracy certificate issued. Report delivered in 48 hours. Fee: $2,200.
Both parties accepted the neutral third-party measurement. Contractor retained SITE INTEL on a monthly retainer for all new contracts.
Report structure

How every Volume Verification Report is structured

1. Payment decision summary

Zone-by-zone quantity table comparing SITE INTEL measurements against contractor claim, with variance flagged and a clear CA verdict column.

2. Method and measurement notes

Measurement approach, reference surface documentation, NTRIP correction source, RTK FIX confirmation, boundary definitions, and accuracy tolerances.

3. Zone detail and supporting visuals

Orthomosaic with polygon overlays, before/after comparison, DSM cross-sections, and supporting figures for payment review or dispute discussion.

4. Accuracy certificate

Formal accuracy statement accepted for construction payment certification and quantity disputes in Ontario and Quebec.