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United States General Accounting Office: 
GAO: 

Testimony: 

Before the Subcommittee on Energy and Air Quality, Committee on Energy 
and Commerce, House of Representatives. 

For Release on Delivery: 
Expected at 2:00 p.m. EST: 
Tuesday, March 19, 2002: 

Pipeline Safety: 

Status of Improving Oversight of the Pipeline Industry: 

Statement of Peter F. Guerrero: 
Director, Physical Infrastructure Issues: 

GAO-02-517T: 

Mr. Chairman and Members of the Subcommittee: 

We appreciate this opportunity to testify on the Office of Pipeline 
Safety’s (OPS) oversight of the safety of our nation’s pipeline 
infrastructure. Our statement is based on reports we issued in May 2000 
and September 2001, as well as ongoing work for Mr. Dingell of this 
Subcommittee.[Footnote 1] 

OPS oversees the safety of 2.2 million miles of pipelines that transport
potentially dangerous materials, such as oil and natural gas. 
Historically, OPS has been slow to take action to improve its oversight 
of the pipeline industry and implement critical pipeline safety 
improvements. As a result, OPS has the lowest implementation rate of 
any transportation agency for recommendations from the National 
Transportation Safety Board (the Safety Board). This lack of 
responsiveness has prompted Congress to repeatedly mandate basic 
elements of a pipeline safety program, such as requirements to 
periodically inspect pipelines. In recent years, OPS has initiated 
several actions to improve its oversight of the pipeline industry, 
including requiring “integrity management” programs for individual
operators to assess their pipelines for risks, take action to mitigate 
the risks, and develop program performance measures. We are here today 
to discuss (1) OPS’ progress in implementing integrity management and 
other initiatives, (2) OPS’ progress in responding to recommendations 
from the Safety Board and statutory requirements, and (3) issues that 
are critical to the future success of OPS’ initiatives to improve the 
safety and oversight of the pipeline industry. 

In summary: 

OPS has moved forward with its new risk-based regulatory approach—
integrity management—that requires operators to develop programs that
focus on the greatest risks to their pipelines. This approach differs
significantly from its traditional approach of inspecting pipelines for
compliance with uniform regulations establishing minimum standards.
OPS plans to review and monitor these programs, which will be unique for
each of more than 400 hazardous liquid and natural gas transmission
operators. OPS has issued final rules requiring the phased 
implementation of these programs for operators of hazardous liquid 
pipelines. The agency also plans to issue a final rule for operators of 
natural gas transmission pipelines by the end of 2002. 

OPS has also made progress on other initiatives that are intended to
improve the agency’s oversight of the pipeline industry. These 
initiatives include: 

* Revising forms and procedures to collect more complete and accurate
data, which will enable OPS to better assess the causes of incidents and
focus on the greatest risks to pipelines. According to the Safety Board 
and industry associations, these actions address the underlying 
problems with OPS’ data, such as limited data on the causes of 
incidents. OPS hopes to implement most of its initiatives to improve 
data in 2002. However, according to industry associations, it may be 
several years before OPS has sufficient data to thoroughly evaluate 
industry trends, especially for hazardous liquid pipelines. 

* Allowing more states to oversee a broader range of interstate pipeline
safety activities. State pipeline safety inspectors are an invaluable 
resource for OPS because they are familiar with pipeline safety issues 
unique to their states. OPS responded to our May 2000 recommendations 
that the agency better utilize this resource by allowing states to 
participate in a wider range of oversight activities, such as reviewing 
integrity management programs for pipelines in their individual states. 

* Increasing the use of fines, thereby reversing OPS’ former trend of 
relying more heavily on less severe corrective actions. From 1990 
through 1998, OPS decreased the number and amount of fines while 
increasing the use of less severe corrective actions, such as letters 
of concern. We questioned this change in OPS’ enforcement policy and 
recommended in May 2000 that the agency determine the impact of the 
reduced use of fines on safety. According to OPS officials, the agency 
is not able to determine this impact as we recommended because it does 
not have sufficient data to link its compliance actions with 
improvements in safety. Nevertheless, OPS determined that its 
enforcement policy was perceived negatively and did not adequately 
address safety concerns. OPS subsequently changed its enforcement 
policy to make better use of its full range of enforcement tools, 
including increasing the number and severity of fines. According to OPS 
officials, the agency plans to collect data that will allow it to link 
its compliance actions with improvements in safety. We are evaluating 
OPS’ response to our recommendation. 

OPS has made progress in responding to recommendations from the
Safety Board and statutory requirements, but still has not implemented 
some significant recommendations and requirements. In May 2000, we
reported that OPS had the lowest rate of any transportation agency in
responding to recommendations from the Safety Board and had not
completed 22 out of 49 statutory requirements imposed since 1988. OPS
has since improved its responsiveness to the Safety Board’s
recommendations and taken action on eight statutory requirements.
However, some recommendations and requirements dealing with issues
that are critical for pipeline safety—such as requiring pipeline 
operators to periodically inspect their pipelines—are more than a 
decade old and OPS still has not implemented them. According to OPS 
officials, the agency’s ongoing initiatives should fulfill the majority 
of the open recommendations and requirements before the end of 2002. 

OPS faces major challenges in implementing its initiatives and in 
fulfilling the Safety Board’s recommendations and statutory 
requirements. These challenges include (1) developing performance 
measures for the integrity management approach, (2) ensuring sufficient 
resources and expertise to oversee operators’ integrity management 
programs, (3) providing consistent and effective enforcement of 
integrity management program requirements, and (4) issuing requirements 
for integrity management programs for operators of gas transmission 
pipelines. We are reviewing these issues as part of our ongoing work, 
and will address them in our final report. 

Background: 

OPS regulates the safety of almost 2.2 million miles of pipelines, 
which is enough to circle the earth 88 times. There are three primary 
types of pipelines under OPS’ jurisdiction. Natural gas transmission 
pipelines—about 322,000 miles—transport natural gas over long distances 
from sources to communities. An additional 1.7 million miles of natural 
gas distribution pipelines continue transporting the gas throughout the
communities to consumers. Finally, about 155,000 miles of hazardous
liquid pipelines generally transport crude oil to refineries and 
continue to transport the refined oil product, such as gasoline, to 
product terminals and airports. 

These pipelines transport the bulk of natural gas and petroleum products
in the United States and are the safest mode for transporting these
potentially dangerous commodities. Although pipeline incidents resulted
in an average of about 24 fatalities per year from 1989 to 2000, the 
number of pipeline incidents is relatively low when compared with those 
involving other forms of freight transportation. On average, about 66 
people die each year in barge accidents, about 590 in railroad 
accidents, and about 5,100 in truck accidents. Despite the relative 
safety of pipelines, pipeline incidents can have tragic consequences, 
as evidenced by the incidents at Bellingham, WA, and Carlsbad, NM. 
These incidents, which caused 15 fatalities, highlighted the importance 
of pipeline safety and the need for more effective oversight by OPS. 

From 1989 through 2000, the total number of incidents per 10,000 miles 
of pipeline decreased by 2.9 percent annually, while the number of major
pipeline incidents (those resulting in a fatality, an injury, or 
property damage of $50,000 or more) per 10,000 miles of pipeline 
increased by 2.2 percent annually. (See figure 1.) Over the same time 
period, pipeline mileage increased 1.6 percent annually from 1.9 to 2.2 
million miles of pipelines. 

Figure 1: Major and Total Incidents per 10,000 Miles of Pipeline: 

[See PDF for image] 

This figure is a multiple line graph with lines depicting incidents in 
the following four categories for the years 1989 through 2000: 
Total incidents; 
Annual average (total incidents); 
Major incidents; 
Annual average (major incidents). 

Source: GAO’s analysis of OPS data. 

[End of figure] 

Traditionally, OPS carried out its oversight responsibility by 
requiring all pipeline operators to comply with uniform, minimum 
standards. Recognizing that pipeline operators face different risks 
depending on such factors as location and the product they carry, OPS 
began exploring the concept of a risk-based approach to pipeline safety 
in the mid-1990s. In 1996, the Accountable Pipeline Safety and 
Partnership Act directed OPS to establish a demonstration program to 
test a risk-based approach. The Risk Management Demonstration Program 
went beyond OPS’ traditional regulatory approach by allowing individual 
companies to identify and focus on risks to their pipelines. Since the 
program’s initiation in 1997, OPS has approved six demonstration 
projects. 

OPS Has Made Progress in Implementing Integrity Management Programs and 
Other Initiatives: 

Partly on the basis of OPS’ experience with the Risk Management 
Demonstration Program, the agency has moved forward with a new 
regulatory approach that requires pipeline operators to comprehensively
identify and address risks to the segments of their pipelines that are
located in “high consequence areas” where a leak or rupture would have
the greatest impact.[Footnote 2] This approach requires individual 
pipeline operators to develop and follow an integrity management 
program. Each program must contain specific elements, including a 
baseline assessment of all pipelines that could affect high consequence 
areas, periodic reassessment of these pipeline segments, prompt action 
to address any problems identified in the assessments, and measures of 
the program’s effectiveness. 

Although OPS has issued final rules requiring integrity management
programs for operators of hazardous liquid pipelines, the agency has not
issued a proposed rule for operators of gas transmission pipelines. In
December 2000, OPS issued a final rule for operators of “large” 
hazardous liquid pipelines, defined as pipeline systems of at least 500 
miles. Under this rule, individual operators were required by December 
31, 2001 to identify pipeline segments that can affect high consequence 
areas, and then develop a framework for their integrity management 
program and a plan for conducting baseline assessments by March 31, 
2002. OPS issued a similar rule for operators of “small” hazardous 
liquid pipelines that are less than 500 miles long on January 16, 2002, 
with later deadlines. For natural gas transmission pipelines, OPS 
anticipates issuing a final rule in fall 2002.[Footnote 3] 

OPS plans to review and monitor operators’ programs for compliance with
the integrity management requirements, but will not formally approve
operator programs. OPS is currently in the first of a four-phase plan 
for reviewing and monitoring integrity management programs for 
operators of large hazardous liquid pipelines.[Footnote 4] In phase 
1—scheduled to be completed by the end of April 2002—OPS is reviewing 
operators’ identification of pipeline segments that impact high 
consequence areas. During phase 2—from July 2002 to July 2004—OPS will 
inspect the more fully developed framework and assessment plans. After 
July 2004, OPS plans to monitor operators’ implementation of their 
individual programs through periodic inspections in phase 3, and review 
and respond to notifications from operators of changes in their 
programs in phase 4. 

OPS is hiring and training additional inspectors to review and monitor
operators’ programs. OPS had 56 inspectors in fiscal year 2001 and plans
to hire an additional 30 inspectors—a 54-percent increase—by the end of
fiscal year 2003. OPS plans to augment its inspection force with 
contractor and state support as it develops the necessary expertise to 
review and monitor operators’ programs. OPS has also developed a list 
of training courses that will be required for federal and state 
inspectors, and it is currently scheduling this training. OPS officials 
anticipate that it will take about 2 years to provide this training to 
all federal and state inspectors. 

In addition to the integrity management programs, OPS is making progress
on other initiatives for improving data, involving states, and 
increasing the use of fines. These initiatives are intended to improve 
pipeline safety and the agency’s oversight. 

OPS Is Taking Action to Improve Data: 

DOT’s Inspector General, the National Transportation Safety Board, and
others have reported that OPS’ data on pipeline incidents and
infrastructure are limited and sometimes inaccurate. For example, in the
past, OPS’ incident report forms have used only five categories of 
causes for incidents on natural gas distribution pipelines, four 
categories for those on natural gas transmission pipelines, and seven 
categories for those on hazardous liquid pipelines. As a result, about 
one-fourth of all pipeline incidents were attributed to “other causes,” 
which limited OPS’ ability to identify and focus on the causes of 
incidents. In addition, data on the amount of pipeline mileage in 
various infrastructure categories (such as age or size) are necessary 
for a meaningful comparison of the safety performance of individual 
pipeline companies. OPS did not require hazardous liquid pipeline 
operators to submit this type of data and did not collect complete data 
from natural gas pipelines. Finally, the information on incident 
reports filed by operators sometimes changes as the incident 
investigation proceeds. OPS did not have a procedure for ensuring that
operators submitted revised reports when needed. 

OPS is taking action to collect data that will allow it to more 
accurately determine the causes of incidents, analyze industry trends, 
and compare the safety performance of operators. For example, OPS 
revised its incident report forms in 2001 for hazardous liquid and 
natural gas transmission incidents to include 25 categories of causes 
and plans to revise the form for natural gas distribution incidents by 
the end of 2002. Furthermore, OPS is assigning an inspector in each 
region to review incident report forms for completeness and accuracy, 
and has instituted new electronic notification procedures to ensure 
that operators submit revised incident reports, if necessary. OPS also 
plans to institute annual reports for hazardous liquid pipeline 
operators, and is in the process of revising annual report forms for 
all natural gas pipeline operators. Finally, OPS is conducting studies 
of incident information to improve its understanding of the causes of
incidents. According to OPS officials, most of these improvements will 
be implemented for 2002 data. 

According to the Safety Board and industry groups, OPS’ initiatives
address the underlying data problems and will enable OPS to better
understand the causes of incidents so the agency can focus its efforts 
to improve safety. However, officials from industry groups told us that 
it will be several years before OPS has sufficient data to analyze 
trends in incidents. Officials from the Safety Board also noted that 
these initiatives are merely a first step, and they emphasized that OPS 
should periodically reassess its forms and procedures and take steps to 
revise them as necessary. We are evaluating OPS’ data improvement 
initiatives as part of our ongoing work. 

States Are Taking a Greater Role in Overseeing Interstate Pipeline 
Safety Activities: 

OPS is allowing more states to help oversee a broader range of 
interstate pipeline safety activities. Although OPS relies heavily on 
state inspectors to oversee intrastate pipelines, it reduced its 
reliance on states to inspect interstate pipelines in the mid-1990s 
when it moved to a more risk-based, system-wide approach to inspecting 
pipelines. At that time, OPS believed it would be too difficult to 
coordinate participation by individual states in the new inspection 
process. However, in our May 2000 report, we found that allowing states 
to participate in interstate pipeline safety inspections could improve 
pipeline safety by increasing the frequency and thoroughness of 
inspections to detect safety problems. Additionally, state pipeline 
safety inspectors are likely to be familiar with pipelines in their
jurisdictions and the potential risks faced by these pipelines. We
recommended that OPS work with state pipeline safety officials to
determine which activities would benefit from state participation and, 
for states that are willing to participate, integrate their activities 
into the safety program. We also recommended that OPS allow state 
inspectors to assist in reviewing the integrity management programs 
developed by the companies that operate in their states to help ensure 
that these companies have identified and adequately addressed safety 
risks to their systems. 

OPS responded to our recommendations in 2001 by encouraging more
states to oversee the safety of interstate pipelines in their states. 
These states may perform a broad range of oversight activities, such as
inspections of new construction, oversight of rehabilitation projects 
and integrity management programs, incident investigation, standard
inspections, and participation in nonregulatory program initiatives. 
Other states that want to participate on a smaller scale may apply for 
specific, short-term projects, such as inspecting new pipeline 
construction projects. As of January 2002, 11 states—up from 8 in 
2000—have been approved to participate in all oversight activities, and 
an additional 4 states have been approved to participate on short-term 
projects.[Footnote 5] 

OPS Is Increasing its Use of Fines: 

OPS is increasing its use of fines for safety violations, thereby 
reversing a trend of relying more heavily on less severe corrective 
actions. From 1990 to 1998, OPS decreased the proportion of enforcement 
actions in which it proposed fines from about 49 percent to about 4 
percent. During this time, the agency increased the proportion of 
warning letters and letters of concern from about 33 percent to about 
68 percent. OPS made this change in order to place more emphasis on 
“partnering” to improve pipeline safety rather than on punishing 
noncompliance. As of May 2000, OPS could not determine whether this 
approach was effective in maintaining compliance with safety 
regulations. Consequently, we recommended that DOT determine whether 
OPS’ reduced use of fines had maintained, improved, or decreased 
compliance with pipeline safety regulations. 

According to OPS officials, the agency is not able to determine the 
impact of its compliance actions on safety as we recommended because it 
does not have sufficient data. Nevertheless, OPS concluded that its 
decreased reliance on fines was perceived negatively by the public and 
Congress, and that the letters of concern did not allow OPS to 
adequately address safety concerns. OPS subsequently changed its 
enforcement policy to make better use of its full range of enforcement 
tools, including increasing the number and severity of fines. According 
to OPS officials, the agency plans to collect data that will allow it 
to link its compliance actions with improvements in safety. We will 
follow up on OPS’ progress in this area during our current review. 

OPS Has Not Implemented Significant Safety Board Recommendations and 
Statutory Requirements: 

OPS is taking action on open recommendations from the Safety Board and
statutory requirements, but has still not implemented important
recommendations and requirements. In May 2000, we reported that OPS
historically had the worst response rate—about 69 percent—of any
transportation agency to Safety Board recommendations. These
recommendations dealt with a variety of issues that are critical for
pipeline safety, such as requiring operators to periodically inspect
pipelines and install valves to shut down the pipeline in an emergency.
Some of these recommendations were more than a decade old. OPS has
been working to improve its responsiveness over the last several years 
by initiating activities in response to the recommendations and 
improving communications with the Safety Board. The Safety Board has 
been encouraged by OPS’ efforts to improve its responsiveness, 
particularly in the areas of excavation damage, corrosion control, and 
data quality. However, the Safety Board remains concerned about the 
amount of time OPS has been taking to implement recommendations. As of 
February 2002, OPS had not implemented 42 recommendations, several of 
which date from the late 1980s and deal with issues considered critical 
to pipeline safety, such as requiring operators to inspect their 
pipelines. 

OPS maintains that its progress is better than the Safety Board 
indicates. According to OPS officials, the majority of the 
recommendations deal with integrity management and excavation damage 
prevention, which the agency’s ongoing initiatives should fulfill 
before the end of 2002. 

We also reported in May 2000 that OPS had not implemented 22 out of 49
statutory requirements that were designed to improve pipeline safety.
Similar to the open Safety Board recommendations, several of these
unfulfilled requirements dated from the late 1980s and early 1990s and
were related to important pipeline safety issues, such as internal 
inspections and identification of pipelines in populated or 
environmentally sensitive areas. Since May 2000, OPS has been working 
to complete these requirements. As of February 2002, 8 of the 22 
requirements were closed as a result of OPS’ actions, 9 requirements 
were still open, and the remaining 5 were reclassified as “closed” 
because OPS considered them to be superseded by amendments or other 
requirements or because the agency did not believe it was required to 
take further action. OPS plans to fulfill the majority of the open 
requirements before the end of 2002. 

OPS Faces Major Challenges in Implementing its Initiatives: 

In our ongoing work, we are examining several issues that could affect
OPS’ ability to implement its integrity management and data improvement
initiatives and, ultimately, fulfill the Safety Board’s recommendations 
and statutory requirements. These issues include (1) performance 
measures for the integrity management approach, (2) sufficient 
resources and expertise to oversee operators’ integrity management 
programs, (3) consistent and effective enforcement of integrity 
management program requirements, and (4) requirements for integrity 
management programs for operators of gas transmission pipelines. 

Performance measures: In May 2000, we reported that OPS had not 
developed programwide performance measures for the Risk Management
Demonstration Program, even though the act required such measures to
demonstrate the safety benefits of the program. OPS still has not
developed such measures. Despite the lack of quantifiable performance
measures for the demonstration program, OPS moved forward with
integrity management programs and faces the challenge of developing
performance measures for this new approach to regulating pipeline 
safety. Such measures are essential to determine whether the new 
approach is successful and what improvements may be needed. However, 
OPS does not have a complete and viable database of information on 
pipeline incidents and an inventory of pipeline infrastructure on which 
to establish certain performance measures. OPS has taken steps to 
improve its data, but it may be several years before the agency can 
accumulate sufficient data to evaluate trends in the pipeline industry. 

Resources and expertise: Pipeline operators are in the best position to
develop integrity management programs that are tailored to their
pipelines; however, it is critical for OPS to have adequate resources 
and expertise to oversee the programs. After OPS issues a final rule on
integrity management programs for natural gas transmission pipelines, 
the agency estimates that there will be more than 400 hazardous liquid 
and natural gas pipeline operators with individual programs in various 
stages of development. OPS must ensure that it has a sufficient number 
of inspectors to oversee these programs while maintaining its other 
oversight responsibilities. Moreover, while OPS has resolved to include 
states in reviewing and monitoring operators’ programs, the agency 
faces a challenge to determine how best to leverage federal and state 
resources and provide training to state inspectors. 

Furthermore, OPS’ integrity management initiative represents a
fundamental shift in how it oversees the pipeline industry. Federal and
state inspectors that are accustomed to using a checklist approach for
inspecting pipelines for compliance with uniform regulations will have 
to be trained to evaluate programs that are unique to individual 
operators. For example, under the new requirements, operators may use a 
variety of inspection techniques to assess the safety of their 
pipelines. Inspectors must be familiar with all of these inspection 
techniques, know when it is appropriate to use them, and know how to 
interpret the results. 

Enforcement: The variability of individual operator programs will make 
it difficult for OPS to enforce the requirements of the integrity 
management program. OPS’ integrity management requirements for 
hazardous liquid pipelines allow pipeline operators flexibility to 
design and implement integrity management programs based on pipeline-
specific conditions and risks.[Footnote 6] However, this flexibility 
will result in unique programs for each operator and require more 
judgment on the part of inspectors. To ensure that the program 
requirements are consistently and effectively enforced, OPS is 
developing a comprehensive set of inspection protocols that are 
intended to provide clear criteria to inspector staff for evaluating the
adequacy of operator actions and making enforcement decisions. As noted
previously, OPS believes its staff will need increased training and
expertise to make these types of judgments. 

Final rule for natural gas transmission pipelines: OPS has issued the 
final rules requiring integrity management programs for operators of 
hazardous liquid pipelines; however, significant differences between 
natural gas transmission pipelines and hazardous liquid pipelines 
present challenges for OPS in developing a similar rule for operators 
of natural gas transmission pipelines. For example, to facilitate the 
movement of natural gas under pressure, transmission pipelines tend to 
vary more in diameter than hazardous liquid pipelines. These variations 
make it more difficult for natural gas transmission pipelines to 
accommodate internal inspection devices. The Interstate Natural Gas 
Association of America estimates that about 45 percent, or about 
145,000 miles, of natural gas transmission pipelines would require 
alternative inspection methods because modifying the pipelines to 
accommodate internal inspection devices would not be feasible. OPS 
plans to identify alternative inspection methods that would be 
effective in assessing the integrity of these pipelines. OPS has 8 
months to resolve this issue if it is to meet the goal of issuing a 
final rule by the end of 2002. 

Observations: 

We are encouraged by OPS’ recent efforts to improve its oversight of
pipeline safety and believe they are steps in the right direction. 
However, a number of challenges remain. These challenges include 
developing performance measures for the integrity management approach, 
ensuring sufficient resources and expertise to oversee operators’ 
integrity management programs, providing consistent and effective 
enforcement of integrity management program requirements, and issuing 
requirements for integrity management programs for operators of gas 
transmission pipelines. It is imperative for OPS to meet these 
challenges to ensure the safety of the nation’s pipelines. 

Mr. Chairman, this concludes my testimony. I would be pleased to answer
any questions you or Members of the Subcommittee may have. 

Contacts and Acknowledgments: 

For information about this testimony, please contact Peter F. Guerrero 
at (202) 512-4907 or guerrerop@gao.gov. This statement is available on 
GAO’s home page at [hyperlink, http://www.gao.gov]. Individuals making 
key contributions to this testimony were Helen Desaulniers, Susan 
Fleming, Judy Guilliams-Tapia, Michael Horton, Wyatt Hundrup, and Sara 
Vermillion. 

[End of section] 

Footnotes: 

[1] U.S. General Accounting Office, Pipeline Safety: The Office of 
Pipeline Safety Is Changing How It Oversees the Pipeline Industry, 
[hyperlink, http://www.gao.gov/cgi-bin/getrpt?GAO/RCED-00-128] 
(Washington, D.C: May 15, 2000) and Pipeline Safety: Progress Made, but 
Significant Requirements and Recommendations Not Yet Complete, 
[hyperlink, http://www.gao.gov/cgi-bin/getrpt?GAO-01-1075] (Washington, 
D.C.: September 28, 2001). 

[2] For hazardous liquid pipelines, a high consequence area is defined 
as a populated area, an environmentally sensitive area, or a 
commercially navigable waterway. For natural gas transmission 
pipelines, OPS is developing a definition that focuses on populated 
areas. 

[3] OPS issued a proposed rule to define high consequence areas for 
natural gas transmission pipelines on January 9, 2002. 

[4] OPS anticipates following a similar process to review and monitor 
integrity management programs developed by operators of small hazardous 
liquid and natural gas transmission pipelines. 

[5] Arizona, California, Connecticut, Iowa, Michigan, Minnesota, New 
York, Ohio, Virginia, West Virginia, and Washington. 

[6] Pipeline operators must also maintain compliance with uniform 
regulations establishing minimum safety requirements. 

[End of section] 

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