HomeMy WebLinkAbout20242983.tiffCOLORADO
Department of Public
Health & Environment
Weld County - Clerk to the Board
1150 O St
PO Box 758
Greeley, CO 80632
November 8, 2024
To Whom It May Concern:
RECEIVED
NOV 08 2024
WELD COUNTY
COMMISSIONERS
On November 8, 2024, the Colorado Air Pollution Control Division will begin a 30 -day public
comment period for Summit DJ -S, LLC - Centennial Gas Plant. 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 comment 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 Polls, Governor I Jill Hunsaker Ryan, MPH, Executive Director
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Air Pollution Control Division
Notice of a Proposed Construction Permit Warranting Public Comment
Website Title: Summit DJ -S, LLC - Centennial Gas Plant - Weld County
Notice Period Begins: November 8, 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 DJ -S, LLC
Facility: Centennial Gas Plant
Natural Gas Processing Plant
47285 County Road 100
Briggsdale, CO 80611
Weld County
The proposed project or activity is as follows:
The Centennial Gas Plant (CGP) is a natural gas processing plant with a design throughput of
up to 28 million standard cubic feet per day (MMSCFD). Natural gas is transported to the facility via
a pipeline gathering system through inlet compression engines. The gas stream is then sent to an
amine unit to remove carbon dioxide (CO2). The gas is then sent to a glycol dehydration unit prior
to entering a molecular sieve dehydration unit for removal of water. The dried gas is then cooled
through a propane refrigeration system followed by a cryogenic natural gas liquid (NGL) recovery
skid for removal of NGL products. The NGL is sent to and stored in eight (8) pressurized above ground
storage tanks. Additionally, trucks will load NGL from offsite for transport to the sales line. The
residue gas will be metered through a pipeline for offsite sales.
4300 Cherry Creek Drive S., Denver, CO 80246-1530 P 303-692-2000 www.colorado.Qov/cdphe
Jared Polis, Governor I Jill Hunsaker Ryan, MPH, Executive Director
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Summit DJ -S (Summit) submitted a permit modification on 3/12/2024 requesting the following
changes:
(1) Addition of a new dehydration system with 20 MMscf/day capacity. Dehy unit will be controlled
with a VRU, backed up by a process flare.
(2) Modification of the open flare/process flare to receive the new dehy waste streams during VRU
downtime.
Due to the reclassification of Northern Well County from moderate to severe, this facility is
considered an existing major stationary source of VOC (>50 tpy). Considering the affected sources
from this project, the project PTE from new and existing units is 18.3 tpy. As a result, the difference
between projected actual emissions and baseline actual emissions will be below 25 tpy and project
is not subject to major NANSR review. This is a conservative approach and it is supported by the
policy established in PS -Memo 24-02.
The operator is requesting enforceable limits on the PTE of VOC in order to avoid NANSR major source
review.
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.
A copy of the application, the division's analysis, and a draft of construction permit number
12WE2117 are available on the division website: Air Permit Public Notices
) 4300 Cherry Creek Drive S., Denver, CO 80246-1530 P 303-692-2000 www.colorado.gov/cdohe
Jared Polis, Governor I Jill Hunsaker Ryan, MPH, Executive Director
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 S., Denver, CO 80246-1530 P 303-692-2000 www.colorado.gov/cdphe
w * Jared Polls, Govemor I Jill Hunsaker Ryan, MPH, Executive Director
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