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COLORADO
Department of Public
Health Et Environment
Weld County - Clerk to the Board
11500 St
PO Box 758
Greeley, CO 80632
June 24, 2024
To Whom it May Concern:
RECEIVED
JUN 2 4 2024
WELD COUNTY
COMMISSIONERS
On June 24, 2024, the Air Pollution Control Division will begin a 30 -day public notice period for
Summit Oil and Gas, LLC - Castor 7-59 12. A copy of this public notice is enclosed.
Thank you for assisting the Division by posting a copy of this notice in your office. A public copy of
this notice is required by Colorado Air Quality Control Commission regulations. The notice must be
available for public inspection for a period of thirty (30) days from the beginning of the public notice
period. Please reference the public notice for instructions on submitting comments.
4300 Cherry Creek Drive S., Denver, Co 80246-1530 P 303-692-2000 www.colorado.gov/cdphe
Jared Polis, Governor I Jill Hunsaker Ryan, MPH, Executive Director
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2024-1734
M�M,�, Air Pollution Control Division
\Y''/� Notice of a Proposed Project or Activity Warranting Public
�i'�ii�'� Comment
Website Title: Summit Oil and Gas, LLC - Castor 7-59 12 - Weld County
Notice Period Begins: June 24, 2024
Notice is hereby given that an application for a proposed project or activity has been submitted to
the Colorado Air Pollution Control Division for the following source of air pollution:
Applicant: Summit Oil and Gas, LLC
Facility: Castor 7-59 12
Well Production Facility
SW 1/4 quadrant of Section 12, Township 7N, Range 59W
Weld County
The proposed project or activity is as follows:
This project includes five (5) new points, four of which were previously covered by a GP10
permit and one point that was added to the project during processing. This application originally
included four new SI engine points, however points 002 and 004 were canceled on 12/8/2022 and
will therefore not be included in this project. The remaining canceled engine points were originally
included in the GP10 preconstruction permit but were ultimately never set at the facility. The
remaining points in this project include a produced water storage tank source (006), a
hydrocarbon loadout source (007), a crude oil storage tank source (008), and a routine and
predictable emissions source (009). Additionally, two (2) GP02 applications were added to this
project on 6/12/2023 (pts 014 Ft 015) and a second liquid loading operation (point 016) was added
with a revised application during processing on 8/21/2023. The SI engines added on 6/12/2023
were cancelled during processing on 8/18/2023.
The division has determined that this permitting action is subject to public comment requirements
under Colorado Air Quality Control Commission Regulation Number 3, Part B, Section III.C due to
the following reason(s):
• the source is requesting a federally enforceable limit on the potential to emit in order to
avoid other requirements
The division has made a preliminary determination of approval of the application.
4300 Cherry Creek Drive South, Denver, CO 80246-1530 P 303-692-2000 www.colorado.gov/cdphe
Jared Polis, Governor I Jill Hunsaker Ryan, MPH, Executive Director
A copy of the application, the division's analysis, and a draft of construction permit number
22WE0513 are available on the division website: Air Permit Public Notices
The division hereby solicits submission of public comments from any interested person concerning
the ability of the proposed project or activity to comply with the applicable standards and
regulations of the commission. The division will receive and consider written public comments for
thirty (30) calendar days after the date of this notice. Comments may be submitted using the
following options:
• Submit comments via web form: Form for Public Comment on Draft Permit
• Submit comments via email: cdphe apcd airpermitcomments@state.co.us
• Submit comments via mail:
Air Pollution Control Division - Oil Et Gas Unit
Colorado Department of Public Health and Environment
4300 Cherry Creek Drive South, APCD-SS-B1
Denver, CO 80246-1530
NOTE: Comments submitted to the division will be uploaded to an online document repository and
will be accessible to the public. Your comment(s) and the division's response(s) are not considered
confidential and will be publicly accessible, including your name and any other personal
information you provide in your comment(s).
4300 Cherry Creek Drive South, Denver, CO 80246-1530 P 303-692-2000 www.colorado.gov/cdphe
Jared Polis, Governor I Jill Hunsaker Ryan, MPH, Executive Director
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