Subpart W XML Reporting Help
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XML Reporting Documentation

Below you will find three type of technical assistance for the Subpart W XML reporting community:  schema and XML requirements documentation, documentation addressing critical validation check, and XML reporting examples for each Subpart W Segment.   These schema will go into effect in mid-February 2019; until then Version 8.3 of the schema remains applicable. While these will address a wide range of questions, users that continue to have difficulty configuring, uploading, or submitting their Subpart W XML are urged to contact the GHGRP Help desk by e-mail at

Schema and XML Requirements

The Subpart W RY2018 XML reporting schema (version 9.1) only includes those data elements applicable to RY2018 reporting. EPA has limited this file to just those data elements applicable to 2018 to clarify requirements and to assist facilities in preparing their 2018 reports.  To see the full XML schema for all subparts, all reporting years, and a change log comparing RY18 to RY17, please see the XML Reporting Instructions page.

An archive of  RY2012, RY2013, RY2014, RY2015, RY2016 and RY2017 XML reporting instructions can be found at Archived XML Reporting Instructions.

Critical Validation Checks

Subpart W has almost 600 critical validations checks.  To help XML reporters determine with specific data element is causing critical validation, we have provided that documentation below:

XML Reporting Examples

This section provides examples of common Subpart W reporting scenarios and XML submissions demonstrating how annual GHG reports should be structured. In each case we have provided a complete segment report which includes all sources applicable to the segment.  Each example is presented in a Reporting Form format and in an XML for consistent with the formats created by and expected by e-GGRT. 

Example Files
Segment 1: Offshore Petroleum and Natural Gas Production
Segment 2: Onshore Petroleum and Natural Gas Production
Segment 3: Onshore Natural Gas Processing
Segment 4: Onshore Natural Gas Transmission Compression
Segment 5: Underground Natural Gas Storage
Segment 6: Liquefied Natural Gas (LNG) Storage
Segment 7: LNG Import and Export Terminals
Segment 8: Natural Gas Distribution
Segment 9: Onshore Petroleum and Natural Gas Gathering and Boosting
Segment 10: Onshore Natural Gas Transmission Pipeline

This web site is maintained by a contractor to the U.S. Environmental Protection Agency (RY2018.R.02)