# DENBURY ONSHORE, LLC — Notice of Amendment

- **operation:** document
- **citation:** CPF 220115011M
- **title:** DENBURY ONSHORE, LLC — Notice of Amendment
- **source type:** enforcement
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2011-12-09
- **effective on:** Not available
- **summary:** CLOSED notice of amendment citing 195.452(b)(4)(i), 195.452(b)(4)(ii), 195.452(f)(1), 195.588(b)(2)(i), 195.588(b)(3)(i), 195.588(b)(4)(i), 195.588(b)(4)(iii), 195.588(b)(5)(i).
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**body:**

Notice of Amendment involving DENBURY ONSHORE, LLC. PHMSA's enforcement data identifies the cited regulations as 195.452(b)(4)(i),  195.452(b)(4)(ii),  195.452(f)(1),  195.588(b)(2)(i),  195.588(b)(3)(i),  195.588(b)(4)(i),  195.588(b)(4)(iii),  195.588(b)(5)(i). The case was opened on 2011-12-09 and is reported as closed as of 2012-02-28. Open the official case record for notices, responses, orders, and the latest status.

Official case documents:

220115011M_closure letter_02282012.pdf: https://primis.phmsa.dot.gov/enforcement-documents/220115011M/220115011M_closure%20letter_02282012.pdf

220115011M_closure letter_02282012_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/220115011M/220115011M_closure%20letter_02282012_text.pdf

220115011M_notice of amendment_12092011.pdf: https://primis.phmsa.dot.gov/enforcement-documents/220115011M/220115011M_notice%20of%20amendment_12092011.pdf

220115011M_notice of amendment_12092011_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/220115011M/220115011M_notice%20of%20amendment_12092011_text.pdf

220115011M_Operator Response and Request For Time Extension_01092012.pdf: https://primis.phmsa.dot.gov/enforcement-documents/220115011M/220115011M_Operator%20Response%20and%20Request%20For%20Time%20Extension_01092012.pdf

220115011M_closure letter_02282012_text.pdf

CERTIFIED MAIL - RETURN RECEIPT REQUESTED
February 28, 2012
Mr. John Filiatrault
Vice President CO2 Supply and Pipelines
Denbury Onshore, LLC
5100 Tennyson Parkway, Suite 3000
Plano, TX 75024
CPF 2-2011-5011M
Dear Mr. Filiatrault:
On June 13-17, 2011, representatives of the Pipeline and Hazardous Materials Safety
Administration (PHMSA) inspected the Denbury Onshore, LLC (Denbury) Liquid Integrity
Management Program (IMP) in Flowood, Mississippi, pursuant to Chapter 601 of 49 United
States Code. As a result of the inspection, PHMSA issued a Notice of Amendment (NOA) to
Denbury on December 9, 2011.
The PHMSA Southern Region received your initial response to the NOA by email on
January 6, 2012. You asked for clarification of Item 1B: 195.452(b)(4)(ii) and for a 30-day
extension. On January 11, 2012, we responded with an email to explain that this item
addressed integrity management related activities on how decisions are made by an operator
to implement each element of the IMP. Procedures for pipeline personnel to follow the
manufacturer’s coating specifications and recommendations were cited as an example. We
also granted the 30-day extension.
We subsequently received and reviewed two letters from Denbury dated February 22 and 23,
2012, responding to the NOA.
This letter is to inform you that Denbury has complied with the terms of the NOA and that no
further action is necessary with regards to the NOA. This case is now closed.
Please be advised that this letter refers only to the NOA (CPF 2-2011-5011M) and not to any
other PHMSA pending cases. Also be advised that nothing herein states or implies that the
above described IMP meets the requirements of the federal pipeline safety regulations or that



the IMP is approved. The Denbury pipeline system and the IMP remain subject to inspection
by PHMSA.
Sincerely,
Wayne T. Lemoi
Director, Office of Pipeline Safety
PHMSA Southern Region

220115011M_notice of amendment_12092011_text.pdf

NOTICE OF AMENDMENT
CERTIFIED MAIL - RETURN RECEIPT REQUESTED
December 9, 2011
Mr. John Filiatrault
Vice President CO2 Supply and Pipelines
Denbury Onshore, LLC
5100 Tennyson Parkway, Suite 3000
Plano, TX 75024
CPF 2-2011-5011M
Dear Mr. Filiatrault:
On June 13-17, 2011, representatives of the Pipeline and Hazardous Materials Safety
Administration (PHMSA), pursuant to Chapter 601 of 49 United States Code, inspected the
Denbury Onshore, LLC (Denbury) Liquid Integrity Management Program (IMP) in Flowood,
Mississippi.
On the basis of this inspection, PHMSA has identified the apparent inadequacies found within
the Denbury IMP as described below:
1. §195.452 Pipeline integrity management in high consequence areas.
….(b) What program and practices must operators use to manage pipeline integrity?
Each operator of a pipeline covered by this section must:
... (4) Include in the program a framework that---
(i) Addresses each element of the integrity management program under paragraph
(f) of this section, including continual integrity assessment and evaluation under
paragraph (j) of this section; and
(ii) Initially indicates how decisions will be made to implement each element.
• Item 1A: §195.452(b)(4)(i)
The Denbury IMP framework did not address all elements of the integrity
management regulation under paragraph (f) of this section (i.e. §195.452).
For example, Denbury’s IMP procedures IMP-440 and IMP-410 for identifying and
documenting high consequence area (HCA) changes use the management of change
(MOC) process defined in Denbury’s operations and maintenance (O&M) manual but
the procedures had no instructions or reference to the MOC process for documenting
HCA changes.



• Item 1B: §195.452(b)(4)(ii)
The Denbury IMP framework did not address all elements in how decisions will be
made to implement each element.
For example,
1. Denbury’s Direct Assessment & Corrosion Control (DACCP), Revision 4.0 dated
July 2009, did not include instructions to meet the NACE SP0502, Section 5.7.1
Mitigation requirement to “take remediation activities to mitigate or preclude
future external corrosion resulting from significant root causes.”
2. Denbury’s Corrosion Manual, Section 3.6 Coating, did not instruct employees to
follow the manufacturer’s specifications and recommendations for coating the
pipeline.
2. §195.452 Pipeline integrity management in high consequence areas.
…. (f) What are the elements of an integrity management program? An integrity
management program begins with the initial framework. An operator must
continually change the program to reflect operating experience, conclusions drawn
from results of the integrity assessments, and other maintenance and surveillance
data, and evaluation of consequences of a failure on the high consequence area. An
operator must include, at minimum, each of the following elements in its written
integrity management program:
(1) A process for identifying which pipeline segments could affect a high consequence
area;
• Item 2: §195.452(f)(1)
Denbury’s IMP did not include formalized written procedures for training field
personnel to identify an HCA or changes to an HCA using the National Pipeline
Mapping System (NPMS) and other information sources as necessary.
3. §195.588 What standards apply to direct assessments?
(b) The requirements for performing external corrosion direct assessment are as
follows:
.... (2) Pre-assessment. In addition to the requirements in Section 3 of NACE SP0502
(incorporated by reference, see §195.3), the ECDA plan procedures for pre-
assessment must include—
(i) Provisions for applying more restrictive criteria when conducting ECDA for
the first time on a pipeline segment;
.... (3) Indirect examination. In addition to the requirements in Section 4 of NACE
SP0502 (incorporated by reference, see §195.3), the procedures for indirect
examination of the ECDA regions must include—
(i) Provisions for applying more restrictive criteria when conducting ECDA for
the first time on a pipeline segment;
.... (4) Direct examination. In addition to the requirements in Section F of NACE
SP0502 (incorporated by reference, see §195.3), the procedures for direct
examination of indications from the indirect examination must include—
(i) Provisions for applying more restrictive criteria when conducting ECDA for
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the first time on a pipeline segment;
(iii) Criteria and notification procedures for any changes in the ECDA plan,
including changes that affect the severity classification, and the time frame for direct
examination of indications; and
.... (5) Post assessment and continuing evaluation. In addition to the requirements in
Section 6 of NACE SP0502 (incorporated by reference, see §195.3), the procedures
for post assessment of the effectiveness of the ECDA process must include—
(i) Measures for evaluating the long-term effectiveness of ECDA in addressing
external corrosion in pipeline segments;
• Item 3A: §195.588(b)(2)(i)
Denbury’s Direct Assessment & Corrosion Control, Revision 4.0 dated July 2009,
Section 5.1.1 Pre-Assessment, did not include provisions for applying more restrictive
criteria when conducting ECDA for the first time on a pipeline segment during the
pre-assessment phase.
• Item 3B: §195.588(b)(3)(i)
Denbury’s Direct Assessment & Corrosion Control, Revision 4.0 dated July 2009,
Section 5.1.1 Pre-Assessment, did not include provisions for applying more restrictive
criteria when conducting ECDA for the first time on a pipeline segment during the
indirect inspection phase.
• Item 3C: §195.588(b)(4)(i)
Denbury’s Direct Assessment & Corrosion Control, Revision 4.0 dated July 2009,
Section 5.1.1 Pre-Assessment, did not include provisions for applying more restrictive
criteria when conducting ECDA for the first time on a pipeline segment during the
direct examination phase.
• Item 3D: §195.588(b)(4)(iii)
Denbury’s Direct Assessment & Corrosion Control, Revision 4.0 dated July 2009,
Section 5.1.3 Direct Examination, did not have criteria and notification procedures for
any changes in the ECDA plan, including changes that affect the severity
classification, the priority of the direct examination, and the time frame for direct
examination of indications.
• Item 3E: §195.588(b)(5)(i)
Denbury’s Direct Assessment & Corrosion Control, Revision 4.0 dated July 2009,
Section 5.1.4 Post Assessment, did not include measures for evaluating the long-term
effectiveness of ECDA in addressing external corrosion in pipeline segments.
Denbury uses close interval surveys (CIS) and ACVG as the tools for performing the
ECDA assessment. All of the excavations performed on the Northeast Jackson Dome
(NEJD) pipeline appear to have been driven by the ACVG results and not by the CIS
data. Therefore, Denbury should have measures to determine the long-term
effectiveness of CIS as an ongoing tool for ECDA, especially in consideration of other
factors such as pipelines that are at deeper depths or under pavement where the CIS
may not be a valid tool for ECDA.
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Response to this Notice
This Notice is provided pursuant to 49 U.S.C. § 60108(a) and 49 C.F.R. § 190.237. Enclosed
as part of this Notice is a document entitled Response Options for Pipeline Operators in
Compliance Proceedings. Please refer to this document and note the response options. Be
advised that all material you submit in response to this enforcement action is subject to being
made publicly available. If you believe that any portion of your responsive material qualifies
for confidential treatment under 5 U.S.C. 552(b), along with the complete original document
you must provide a second copy of the document with the portions you believe qualify for
confidential treatment redacted and an explanation of why you believe the redacted
information qualifies for confidential treatment under 5 U.S.C. 552(b). If you do not respond
within 30 days of receipt of this Notice, this constitutes a waiver of your right to contest the
allegations in this Notice and authorizes the Associate Administrator for Pipeline Safety to
find facts as alleged in this Notice without further notice to you and to issue a Final Order.
If, after opportunity for a hearing, your plans or procedures are found inadequate as alleged in
this Notice, you may be ordered to amend your plans or procedures to correct the
inadequacies (49 C.F.R. § 190.237). If you are not contesting this Notice, we propose that
you submit your amended procedures to my office within 60 days of receipt of this Notice.
This period may be extended by written request for good cause. Once the inadequacies
identified herein have been addressed in your amended procedures, this enforcement action
will be closed.
It is requested (not mandated) that Denbury Onshore, LLC maintain documentation of the
safety improvement costs associated with fulfilling this Notice of Amendment
(preparation/revision of plans, procedures) and submit the total to Wayne T. Lemoi, Director,
Office of Pipeline Safety, PHMSA Southern Region.
In correspondence concerning this matter, please refer to CPF 2-2011-5011M and, for each
document you submit, please provide a copy in electronic format whenever possible.
Sincerely,
Wayne T. Lemoi
Director, Office of Pipeline Safety
PHMSA Southern Region
Enclosure: Response Options for Pipeline Operators in Compliance Proceedings
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