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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.→
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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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Resources

Guides

Practical notes on federal environmental review, documentation, policy changes, and responsible AI in permitting workflows.

All guides

Policy

What the FY2026 NEPA Reform Means for Permitting Teams

Recent legislative changes to NEPA timelines and categorical exclusion authority change how agencies and consulting firms structure review processes.

May 2026·6 min read

Read guide →

Compliance

Five Common Mistakes in Section 7 ESA Consultation Documentation

Section 7 consultations are consistently among the most litigated parts of federal permitting. These documentation gaps create avoidable risk.

April 2026·8 min read

Read guide →

Guidance

How to Build an Administrative Record That Holds Up in Court

When 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.

March 2026·14 min read

Read guide →

AI & Governance

Using AI in Federal Environmental Review: A Governance Framework

As AI enters environmental review workflows, agencies need governance that preserves defensibility while allowing speed gains.

February 2026·7 min read

Read guide →

Compliance

ASTM E1527-21: What Changed and Why It Matters

The 2021 update introduced meaningful changes to recognized environmental condition definitions. Here is what practitioners need to know.

January 2026·5 min read

Read guide →

Guidance

CATEX Documentation: What Agencies Actually Need in the Record

Categorical exclusions are common, but poor documentation is a leading cause of successful legal challenges.

December 2025·6 min read

Read guide →
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  • NEPA and permitting reform
  • ESA and Section 7 documentation
  • Administrative records
  • AI governance in review
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