Apply current USGS 3DEP lidar specifications and point-cloud classification requirements

Steps

1. Confirm the current Lidar Base Specification (LBS) revision on usgs.gov/ngp-standards-and-specifications before writing or accepting a scope — the LBS has been revised multiple times (e.g., 2022 rev. A, then a 2025 rev. A), so cite the version actually in force at proposal time.
2. Require point deliverables in LAS format per the current LBS version requirement (recent revisions specify LAS 1.4-R15 using Point Data Record Format 6, 7, 8, 9, or 10).
3. Classify points using at minimum the LBS's required classification scheme (found in the specification's classification table) — ground, unclassified, noise, water, etc. — noting that USGS only quality-assesses accuracy for the minimum required classes, not any extended custom classes a vendor adds.
4. Confirm the contracted Quality Level (QL) for the project (QL0–QL2 point densities are common for 3DEP work) and ensure the vertical/horizontal accuracy requirements tied to that QL are met and documented.
5. Review the specification's data processing and handling requirements section for calibration, void-filling, and breakline requirements applicable to the specific QL and end-use before final delivery.