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Environmental Site Screening

Data-source guide

FEMA NFHL and Wetlands Screening for Site Due Diligence

Flood and wetlands context can change field timing, site access, client questions, and lender review before environmental work is scoped.

Mapped well and site context for environmental screening

Physical context belongs next to regulated-source context because both can change the work plan.

Physical constraints

The report should separate mapped flood and wetland context from contamination-source context while making both easy to review.

Data gaps matter

Missing local or stale mapped data should be visible as a gap, not hidden in a disclaimer.

Source appendix

Evidence inputs

FEMA NFHL context

Public evidence

Shows flood-hazard context around the site.

Limitation: Mapped flood context may not resolve parcel-specific constraints.

Wetland context

Public evidence

Flags wetland presence for review and timing questions.

Limitation: Mapped wetlands may require professional or agency verification.

Report logic

What the page should teach

  • Show mapped overlays by source.
  • Record whether local source coverage is missing.
  • Identify review questions for the consultant.

Human-review boundary

  • The screen does not make a permitting determination.
  • The screen does not replace site reconnaissance.
  • Mapped layers can be stale or coarse.
Internal links

Keep the cluster connected

These pages are designed to support the product hub, sample report, and related source guides with clear crawl paths.