Environmental
Intelligence for

The connected workspace for Phase I environmental assessments. Move from scattered records to a report you can stand behind.

Request a demo

Built around evidence. Guided by your judgment.

PropertyLive map · county parcel overlays

20024 International Blvd

SeaTac, Washington 98198

Public-data example

Loading Mapbox background…

Address locationSource parcelSelected land

Imagery dates vary by location and are not verified by this selection.

Explore the real map and county overlays. GIS boundaries are reference data; area is calculated from the parcel geometry.

Start with the right land.Select parcels, inspect address mismatches, and record the scope of your assessment.

Made for the work behind every Phase I.

Environmental consultantsAssessment teamsProfessional reviewers

The people and institutions
helping shape OPEF.

Behind our team’s experience, backing OPEF, or supporting our work.

U.S. Department of Energy
DOE OCED
ARPA-E
Goldman Sachs
JPMorgan Chase & Co.
Sphera
University of Colorado Boulder
Andreessen Horowitz
Ohio Wesleyan University
BRITE Energy Innovators
EY

U.S. Air Force
UC Berkeley
Wharton
Blackstone
Brown University
Y Combinator
8VC
IIT Delhi
Cintrifuse Capital
NFTE
PayPal

The whole assessment.
A connected way to work.

Your scope guides the research. Your evidence informs the report. Your decisions stay connected to both.

1Property

2Research

3Evidence

4Fieldwork

5Report

6Review

7DeliveryComing soon

A better investigation
starts with a clear scope.

Define the property and the questions that matter. Select parcels, record scope decisions, and turn report requirements into focused research.

Inspect addresses and parcel boundaries
Set research requirements from your template
Keep original records with the assessment

Property Research Evidence

Research requirementsWorking workspace

Research with a clear brief.

Selected questions guide the investigation.

Drafts ready for review

Historical property useHistorical records review

3 source records

Property identity & ownershipSubject property description

2 source records

Surrounding land useSite setting

Follow-up needed

Historical records reviewProposed draft

The selected records describe prior uses of the subject property. Review the original records and their dates before accepting this section.

Historical map · p. 4Property record · p. 1

Every useful passage.
A path into the report.

Open the original, inspect the relevant passage, and review the proposed wording beside it. Keep the source and citation attached as the work moves forward.

Inspect originals and source details
Review, edit, or reject suggested wording
Add accepted material to the right section

Evidence Cited draft Your decision

Evidence → ReportWorking workspace

Read the source. Keep the context.

Original retained

Property record Page 1

Property description

The record identifies the subject parcel and its recorded property information.

The selected passage can be inspected alongside the proposed report wording, with a reference back to the original.

Source passage

One source. A traceable next step.

Select a passage, review the proposed wording, and decide where it belongs.

Subject property description

Review report update

You decide what enters the report.

The fieldwork.
The follow-through.

Bring observations, interviews, requests, and findings into the same assessment. See what was recorded, what supports a finding, and what still needs an answer.

Record observations and interviews
Track missing evidence and responses
Keep supporting and conflicting references

Fieldwork Findings Review

Fieldwork & follow-upWorking workspace

Keep the work connected.

What was observed, what is missing, and what comes next.

Site reconnaissanceObservations and supporting references

Recorded

Property contact interviewQuestions and responses retained

Recorded

Additional historical recordRequest assigned · response pending

Follow-up

A clear record of professional judgment.

Link supporting and conflicting evidence. Preserve the decision and the version reviewed.

Bring it all together.
Keep your name on the judgment.

Build the report with evidence beside the work. Review the wording, record decisions against the version you inspected, and export a DOCX in your retained Word template.

Request a demo

Report outlineExecutive summaryProperty descriptionHistorical records reviewSite reconnaissanceFindings & conclusions

PHASE I ENVIRONMENTAL SITE ASSESSMENT

Historical records review

Selected records, maps, and review notes stay beside the working draft so each statement can be traced before acceptance.

Review proposed wording against the original and record the decision that carries into delivery.

Historical map · p. 4

Site context figureParcel context

Figure 1

Aerial site context with a highlighted parcel boundary

Figure preview · source records remain linked for review

OBSERVATION

The source, passage, and reviewer decision stay together before a conclusion is recorded.

REVIEW STATUS

Proposed wording · practitioner decision pending.

Trace the source.

Keep references connected to the wording they support.

Make the decision.

Drafts stay proposals until you accept them.

Keep your template.

Take the saved report into Word for final document work.

More of your work.
One connected platform.

Collaboration, deeper investigations, and new ways to learn. A look at what’s taking shape.

Good work.
Shared thoughtfully.

Coming soon

A place for your team to review together, and for clients to see the work you choose to share.

Project teams and reviewer roles
Controlled client workspaces
Issued reports with selected evidence

Take a closer look

Project / People & accessPlanned experience

SeaTac assessmentPeople & access

Preview

The right people.
The right view.

A shared project, with room for different responsibilities.

Project ownerFull workspace

ReviewerReview & comment

ClientIssued report only

Internal notes stay with your team.

Product directionIn development

Environmental Intelligence.
Human Judgment.

Environmental intelligence should make the evidence easier to use, and human judgment better informed.

Recognized through Permitting Innovators 2026.

OPEF Inc. was selected to showcase its technology at the 2026 Permitting Innovators Expo. The program is led by the White House Council on Environmental Quality, in collaboration with NASA’s Center of Excellence for Collaborative Innovation.

See OPEF in the selected entrants (opens in a new tab)

Our purpose, applied to environmental assessments.

Making records public is a starting point. Making them searchable, readable, and traceable helps consultants, property teams, and agency staff put that information to work.

OPEF brings that purpose to environmental assessments: less time wrestling with files, more time understanding the evidence. Our ambition is a maintained, openly available public resource, with the original record always within reach.

Preparation, connected.
Professional judgment, yours.

Evidence stays inspectable

Originals, passages, citations, and source details stay close to the decisions they inform.

Open questions stay visible

Missing records and conflicting evidence become explicit follow-up, with a record of what was attempted.

You remain in control

Review suggested drafts, decide what belongs, and preserve the history of accepted changes.

See your next
assessment,
connected.

Walk through Opef from property scope to cited report. See how the tools fit your team’s workflow.

Define your property and scope Research, inspect, and cite evidence Build an editable working report