Services / Methane Data Readiness
Fixed-scope engagement that turns messy field data into a Subpart W / OOOOb / OGMP-ready inventory — recordkeeping calendar, LDAR program plan, QA workbook. For non-supermajor operators without a dedicated emissions platform.
From $15,000 for a single-asset applicability scope · 2–4 week inventory builds · mutual NDA before any data review.
Deadline calendar — the dates this work is built around
Sep 2026
EU Methane Transparency Database scheduled launch (per EC)
Oct 30, 2026
Subpart W 2025 reporting deadline (extended)
Nov 30, 2026
Earliest first OOOOb annual report due
Dec 31, 2026
NM 98% gas capture rule fully effective
Jan 1, 2027
EU importers verify MRV-equivalence
Third-party scrutiny
Satellite & aerial measurements can outpace internal inventories — be ready to reconcile source-level data when buyers or regulators ask
Who this is for
NM Permian operator
Satellites (MethaneSAT, Tanager-1) already publishing NM Delaware Basin intensity 1.2% vs TX side 3.1%. You need the data plumbing right before the rule is in force.
Sustainability VP
Subpart W 2025 reporting has been extended to Oct 30, 2026. Time to clean CY2025 source-level data, if reporting remains applicable to your facilities.
LNG developer / midstream
From Jan 1, 2027, EU importers must demonstrate and report that applicable contracts concluded or renewed on or after Aug 4, 2024 cover supply subject to MRV-equivalent measures. The Methane Transparency Database is currently scheduled to launch in September 2026 per the European Commission.
OGMP 2.0 signatory
3-year clock on measurement-based reconciliation. Get the data architecture right before the gap analysis is your problem.
What you get
Excel workbook + PDF readiness memo + 60-minute walkthrough. One follow-up round included.
Every facility, every Subpart W source category (pneumatic controllers, dehydrators, compressors, blowdowns, tanks, flares, fugitives), with throughput + count.
What fields each emission factor calculation needs, what's missing today, where to source it.
Subpart W equations W-1 through W-39B, AP-42 Ch.7 tank flashing, OTM-56 flare NHVcz. Reproducible, auditable.
Typical records an auditor may request, organised for review.
Quarterly OGI cadence, advanced-monitoring alternatives under Appendix K, repair-window timing.
Executive summary, deadline calendar, gap analysis.
Why us
Stanford PhD-led. Fluent in both the rule text (Subpart W, OOOOb, OGMP 2.0, EU 2024/1787) and the data pipelines that have to feed those rules.
Our position: we hand you the measurement-to-report data architecture. Not a stack test, not a field tour.
The free OOOOb Applicability Checker on tools.petropt.com shows our methodology before you commit.
How it works
20 minutes, free.
Standard turn.
SCADA exports, field tickets, GHGRP prior submissions, equipment lists.
2–4 weeks depending on facility count.
Excel workbook + PDF readiness memo + 60-min walkthrough.
One follow-up round included.
Pricing
Fixed scope, fixed price. Mutual NDA before any data review.
| Scope | Price |
|---|---|
| Single asset / facility group, applicability scope | $15k |
| 2-week OOOOb readiness for greenfield Permian operator | $20k |
| 3-week diagnostic of Subpart W workbook + reconciliation | $25k |
| 2-week NM 98%-capture readiness review | $35k |
| OGMP 2.0 Level 4/5 reconciliation scoping | $40k |
| 4-week EU MR 2024/1787 gap assessment for LNG exporter | $55k |
| Annual reporting preparation (recurring) | $50k–$100k |
| Full multi-facility emissions data model | $150k–$300k |
Scope honesty
This is a fast, defensible decision-support package. It is not a substitute for field execution, legal advice or a signed statutory opinion.
Not a methane sensor vendor. If measurement campaigns are needed, we can help your team evaluate sensor vendors (e.g. Bridger, Project Canary, Highwood) or coordinate with your selected provider.
Not legal advice. Refer environmental counsel.
Not a registered air-permitting consultant. Trinity / Apex / Verdaen for permitting work.
FAQ
This scope focuses on the currently active reporting, monitoring and recordkeeping requirements — Subpart W reporting, OOOOb LDAR / monitoring / recordkeeping, OGMP 2.0 voluntary tiers, EU MR procurement pressure, and applicable state overlays (NM, CO, CA, TX).
Yes — NM, CO, CA and TX overlay is part of every engagement where it applies.
EU MR 2024/1787 entered force Aug 2024. From Jan 1, 2027, importers must demonstrate and report that applicable contracts concluded or renewed on or after Aug 4, 2024 cover supply subject to MRV-equivalent measures. The Methane Transparency Database is currently scheduled to launch in September 2026 per the European Commission.
Book a 20-minute scoping call. Tell us the facility count, the state and the deadline. We'll come back with fixed scope and fixed price.
Or email info@petropt.com directly.