DAQ-2024-007016

195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144820 • Salt Lake City, UT 84114-4820
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah

Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF AIR QUALITY
Bryce C. Bird
Director

SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
DAQC-CA100514001-24
Site ID 100514 (B1)

Sent Via Certified Mail No. 7019 0700 0002 0834 7549

Ovintiv USA Inc.
370 17th Street, Suite 1700
Denver, CO 80202

Dear Mr. Zillner:

Re: Compliance Advisory – Ovintiv USA Inc - Lamb 1-16 4-1, Duchesne County

On January 31, 2024, a representative of the Utah Division of Air Quality (DAQ) conducted an inspection
of Ovintiv USA Inc. - Lamb 1-16 4-1 remotely located with the latitude and longitude of 40.14159, -
109.99249; County: Duchesne.

The DAQ observed the following regulations of concern:

R307-501-4 General Requirements Violation(s): Emissions were found coming from a stuck
separator dump valve, a one-inch gas supply line, additionally the combustor was out and not
firing.

These findings may be a violation of Utah Air Conservation Rules. Ovintiv USA Inc - Lamb 1-16 4-1 is
required to comply with the above regulations. A written response to this letter is required within ten (10)
business days of receipt of this letter.

Additional details about the above observations and regulations are included with this letter. Please contact
Stephen Foulger at: [e-mail] or [phone] if you have any additional questions.

Sincerely,

Rik Ombach
Minor Source Oil and Gas Compliance Section Manager

RO:SF:jl

cc: Alan Humpherys, UDAQ, Minor NSR Section Manager
TriCounty Health Department
March 14, 2024
DAQC-CA100514001-24
Page 2

Potential Violation(s)
On January 31, 2024, Stephen Foulger, an inspector from the DAQ, conducted an inspection at Ovintiv
USA Inc. - Lamb 1-16 4-1 located remotely with the latitude and longitude of
40.14159, -109.99249; County: Duchesne.

At the time of the inspection, the DAQ documented the following potential violation:

Requirement and Rule Comments and Observations
VOC emissions are minimized as reasonably practicable
by equipment design, maintenance and operation
practices. [R307-501-4(1)]

Out of Compliance: Emissions found coming
from separator dump valve and one-inch
hammer union on gas supply line. The
combustor was also out and not firing at the
time of inspection.

Air pollution control equipment is designed and
installed appropriately, maintained, and operated to
control emissions. [R307-501-4(2)]

Out of Compliance: Emissions found coming
from separator dump valve and one-inch
hammer union on gas supply line. The
combustor was also out and not firing at the
time of inspection.

The purpose of a Compliance Advisory (CA) is to document observations made by the DAQ. You are
responsible for complying with the Utah Air Conservation Rules. There are possible administrative and
civil penalties for failing to do so. Section 19-2-115 of the Utah Code Annotated provides that violators of
the Utah Air Conservation Act and/or any order issued there under may be subject to a civil penalty of up
to $10,000 per day for each violation.

When considering if the deficiencies are resolved, the DAQ will consider the written response to this CA.
Responses may include information demonstrating compliance with the regulations or an anticipated
schedule from your company to be in compliance with the applicable regulations. Once received, the DAQ
will review your response and the CA may be revised as a result of that review.

Failure to respond in writing within ten (10) business days of receipt of this CA shall be considered
in the escalation of subsequent enforcement action and assessment of penalties.

Possible DAQ actions to resolve a CA include: No Further Action Letter, Warning Letter, Early
Administrative Settlement with reduced civil penalty, Settlement Agreement with civil penalty, or Notice
of Violation and Order to Comply.

This CA does not limit or preclude the DAQ from pursuing additional enforcement options. Additionally,
this CA does not constitute a bar to enforcement action for conditions that the DAQ did not observe or
evaluate, or any other conditions found during future inspections.

A meeting may be requested to discuss this CA. Please contact Stephen Foulger at [e-mail] or
[phone] if you would like to request a meeting or if you have any questions.