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Platform
How it worksCapture evidence, coordinate review, and export with sources intact.→Free to tryTry our Phase I enginep1.opef.aiRun a real Phase I ESA workflow on p1 with structured intake and export-ready records.→How we fit inWhere OPEF sits in your permitting and compliance workflow.→PartnersIntegrations with compliance platforms and data providers.→
Solutions
Browse all solutions109 permitting domains across 14 regulatory categories.→12 domainsFederal Environmental ReviewNEPA and agency-specific environmental review workflows across all federal programs.→8 domainsSite Assessment & RemediationEnvironmental site assessments, contamination investigations, and regulatory cleanup frameworks.→9 domainsWater & WetlandsClean Water Act permits, wetland jurisdictional determinations, and water quality programs.→9 domainsSpecies & EcosystemsEndangered species consultation, take permits, biological assessments, and habitat conservation.→7 domainsAir Quality & ClimateClean Air Act permits, GHG accounting, noise analysis, and climate disclosure frameworks.→9 domainsEnergy & InfrastructureFERC licensing, renewable energy siting, pipeline safety, and nuclear facility review.→9 domainsCoastal & MaritimeCoastal zone management, offshore permitting, marine sanctuary protection, and maritime safety.→7 domainsCultural Resources & TribalNHPA Section 106 consultation, tribal government engagement, and historic preservation compliance.→9 domainsHazardous Materials & WasteRCRA permitting, CERCLA cleanup, hazardous waste compliance, and chemical risk management.→9 domainsLand Use & ConservationFederal land permits, conservation programs, and statutory use protections for parks and historic resources.→7 domainsAgriculture & ForestryUSDA conservation compliance, timber management, grazing permits, and invasive species programs.→4 domainsDrinking Water & Public HealthSafe Drinking Water Act compliance, underground injection, source water protection, and environmental justice.→5 domainsState Environmental ReviewState-level environmental review statutes including CEQA, SEPA, and state EIR equivalents.→5 domainsReporting & DisclosureClimate and ESG financial disclosure, GHG reporting, TRI, and sustainability frameworks.→
Resources
All guidesNEPA, ESA, administrative records, AI governance, and permitting workflow.→PolicyWhat the FY2026 NEPA Reform Means for Permitting TeamsRecent legislative changes to NEPA timelines and categorical exclusion authority change how agencies and consulting firms structure review processes.→ComplianceFive Common Mistakes in Section 7 ESA Consultation DocumentationSection 7 consultations are consistently among the most litigated parts of federal permitting. These documentation gaps create avoidable risk.→GuidanceHow to Build an Administrative Record That Holds Up in CourtWhen a NEPA decision is challenged, the judge reviews the administrative record—not the narrative. Disorganized or post-hoc records lose cases even when the underlying analysis was sound.→AI & GovernanceUsing AI in Federal Environmental Review: A Governance FrameworkAs AI enters environmental review workflows, agencies need governance that preserves defensibility while allowing speed gains.→ComplianceASTM E1527-21: What Changed and Why It MattersThe 2021 update introduced meaningful changes to recognized environmental condition definitions. Here is what practitioners need to know.→GuidanceCATEX Documentation: What Agencies Actually Need in the RecordCategorical exclusions are common, but poor documentation is a leading cause of successful legal challenges.→
Company
About OPEFMission, principles, and the team behind the platform.→How we fit inWhere OPEF sits in your permitting and compliance workflow.→PartnersIntegrations with compliance platforms and data providers.→CareersFull-time roles, hiring updates, and how we work as a team.→Environmental Professional NetworkFind permitting projects and connect qualified environmental reviewers.→ContactRequest a demo or ask a question about your program.→
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Solutions

Permitting workspaces built for defensible environmental records.

OPEF is the system of record between raw site evidence and review-ready outputs. Teams use it to run NEPA, site assessment, wetlands, species, and state programs without rebuilding the file every time an agency asks a follow-up question.

  • 01

    Unify the administrative record

    Site data, agency listings, field notes, and supporting documents stay linked in one workspace—so reviewers see the same evidence you used to decide.

  • 02

    Work in the right regulatory frame

    Templates and controls for 109 permitting domains across 14 regulatory categories—from CEQ screening to Phase I reconnaissance.

  • 03

    Export with provenance intact

    Determinations, draft sections, and final packages leave with citations, version history, and reviewer comments attached—not rebuilt in Word at the deadline.

Browse by categoryRequest a demo

Program coverage

Where OPEF applies

Federal environmental review programs
Federal environmental reviewCEQ · EPA · USACE
Site assessment and property due diligence
Site assessment & remediationEPA · ASTM · State
Hydrology, wetland delineation, and species review programs
Water, wetlands & speciesUSACE · USFWS · NMFS
Defensible compliance and disclosure records
Compliance & disclosureSEC · EPA · State
Ingest evidence01Ingest evidence
Run review02Run review
Export record03Export record
Permitting domains
109
Regulatory categories
14
Agency families
12+

Browse 109 domains

Across 14 regulatory categories — select a program to view domains, agency families, and workflow depth.

CategoryDomainsAgency family
01
Federal Environmental Review

NEPA and agency-specific environmental review workflows across all federal programs.

12CEQ / EPA / USACE02
Site Assessment & Remediation

Environmental site assessments, contamination investigations, and regulatory cleanup frameworks.

8EPA / ASTM / State03
Water & Wetlands

Clean Water Act permits, wetland jurisdictional determinations, and water quality programs.

9EPA / USACE / State04
Species & Ecosystems

Endangered species consultation, take permits, biological assessments, and habitat conservation.

9USFWS / NMFS05
Air Quality & Climate

Clean Air Act permits, GHG accounting, noise analysis, and climate disclosure frameworks.

7EPA / State DEQs06
Energy & Infrastructure

FERC licensing, renewable energy siting, pipeline safety, and nuclear facility review.

9FERC / BOEM / NRC07
Coastal & Maritime

Coastal zone management, offshore permitting, marine sanctuary protection, and maritime safety.

9NOAA / USCG / State08
Cultural Resources & Tribal

NHPA Section 106 consultation, tribal government engagement, and historic preservation compliance.

7SHPO / ACHP / Tribal09
Hazardous Materials & Waste

RCRA permitting, CERCLA cleanup, hazardous waste compliance, and chemical risk management.

9EPA / State10
Land Use & Conservation

Federal land permits, conservation programs, and statutory use protections for parks and historic resources.

9BLM / USFS / NPS11
Agriculture & Forestry

USDA conservation compliance, timber management, grazing permits, and invasive species programs.

7USDA / USFS / NRCS12
Drinking Water & Public Health

Safe Drinking Water Act compliance, underground injection, source water protection, and environmental justice.

4EPA / State13
State Environmental Review

State-level environmental review statutes including CEQA, SEPA, and state EIR equivalents.

5State lead agencies14
Reporting & Disclosure

Climate and ESG financial disclosure, GHG reporting, TRI, and sustainability frameworks.

5SEC / EPA / Voluntary

Structured workspaces for federal, state, and sector-specific permitting — one evidence-backed workflow from intake to export.

Live today

Phase I ESA

Real property, real data, real map. Regulatory listings, historical sources, questionnaires, and site reconnaissance in one workspace.

Explore Phase I ESA
In development

NEPA workflow

CATEX screening, EA/EIS drafting, alternatives comparison, and public comment management with one evidence infrastructure.

Explore NEPA

Federal expansion

From CEQ to USACE to EPA — consistent data model, agency-specific templates, and traceable exports.

Talk to us
SESSIONLIVE WALKTHROUGHCOVERAGE109 DOMAINS · 14 CATS

Program walkthrough

14 regulatory categories

Seecoverageinyourprogram

Walk through domains, agency templates, and export paths with our team.

With the OPEF team

A focused session on your program: where coverage starts, what templates apply, and how exports leave the workspace.

Request a demoBrowse domains first

Typically 30 minutes · tailored to your agency mix

  1. 01
    DomainsMapped to your sites and jurisdictions
  2. 02
    Agency templatesAligned to the programs you run today
  3. 03
    Export pathsDocumented before you commit to a rollout
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Field ready

Built on real-world data. Proven in the field.

Rulepack validated

Aligned to jurisdictional rules. Continuously updated.

Permitting focused

From application to decision. Every step, covered.

Human review

AI-powered insights. Expert decision-making.

Platform

How it worksRulepacksData sourcesHow we fit inIntegrations

Solutions

Environmental consultantsEngineers & developersEnergy & utilitiesGovernment agenciesTribal nations

Resources

Case studiesResource hubWebinarsHelp centerAPI docs

Company

About OPEFCareersEnvironmental Professional NetworkNewsroomContact us

Connect

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