Greenhouse Gas Reporting Help

Using e-GGRT to Prepare Your Subpart UU Report

Created by Matthew R. Hill, last modified by Mark Palmer on Nov 10, 2015

If you reported for the previous reporting year, the Agency has carried some of your data from last year into the current reporting year to reduce the reporting burden. It is still your responsibility to review and ensure that all of the information in your submission is correct, but the Agency believes that most of the data that is carried forward is unlikely to change significantly from year to year. For more information about carry forward data, please see the Carry forward of data from previous submissions help content

This page provides an overview of topics that are central to Subpart UU reporting. This information will be entered starting from the e-GGRT Subpart UU Overview web form shown below. Each topic represents a key web form where you need to enter information:

The Injection of Carbon Dioxide (CO₂) source category comprises any well or group of wells that inject a CO₂ stream into the subsurface. If you report under subpart RR (Geologic Sequestration of Carbon Dioxide (CO₂)) for a well or group of wells, you are not required to report under subpart UU for that well or group of wells. A facility that is subject to 40 CFR 98 only because it is subject to subpart UU is not required to report emissions under subpart C or any other subpart listed in 40 CFR 98.2(a)(1) or (a)(2).

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Subpart UU Facility Information

Subpart UU requires you to identify each source of the CO₂ received at your facility during the reporting year. You may enter "unknown" if the source is not known.

For more information and guidance on this topic please see Subpart UU Facility Information.

Subpart UU Flow Meters and Containers

For each receiving flow meter or container at your facility, Subpart UU requires you to report the following information:

A unique name or identifier, plus an optional description for the flow meter or container (see also About Unique Unit Names).
Type of unit (flow meter or container)
An indication whether the flow meter or container measurement type is volumetric or mass-based

For more information and guidance on this topic please see Subpart UU Flow Meters and Containers

Subpart UU Annual Mass of CO2 Received Information

For each receiving flow meter or container at your facility, Subpart UU requires you to report basic information about:

The flow through the receiving flow meter or container in each quarter
The flow through the receiving flow meter or container that is redelivered to another facility without being injected into your well in each quarter
The CO2 concentration in the flow or in the container in each quarter

For more information and guidance on this topic please see Subpart UU Annual Mass of CO2 Received Information

Subpart UU Validation Report

You can use the Validation Report to assist with the completeness and quality of your reporting data.

You should use the Validation Report to check your work. The Validation Report performs three types of checks:

Data Completeness: Data that are required for reporting are missing or incomplete.
Data Quality: Data are outside of the expected range of values.
Screen Errors: Critical errors which prevent the acceptance of the reported data. Typically these will appear on the upload page.

You may view the Validation Report at any time.

Note that the Validation Report is intended to assist users in entering data, but it is not an indication that the reporter has entered all necessary information, nor is it an indication that the reporter is in compliance with part 98. Furthermore a negative finding on the validation report is not a guarantee that a data element was entered incorrectly.

For more information and guidance on this topic please see Subpart UU Validation Report