# Legislative or regulatory actions relating to electricity transmission and renewable energy may impact the demand for our services.

Current and potential legislative or regulatory actions may impact demand for our services. Certain legislation or regulations require utilities to meet reliability standards and encourage installation of new electric transmission and renewable energy generation facilities. However, it is unclear whether these initiatives will create sufficient incentives for projects or result in increased demand for our services.

While many states have mandates in place that require specified percentages of electricity to be generated from renewable sources, states could reduce those mandates or make them optional, which could reduce, delay or eliminate renewable energy development in the affected states. Additionally, renewable energy is generally more expensive to produce and may require additional power generation sources as a backup. The locations of renewable energy projects are often remote and may not be viable unless new or expanded transmission infrastructure to transport the electricity to demand centers is economically feasible. Furthermore, funding for renewable energy initiatives may not be available. These factors could result in fewer renewable energy projects and a delay in the construction of these projects and the related infrastructure, which could negatively impact our business.

# Seasonal variations and inclement weather may cause fluctuations in our operating results, profitability, cash flow and working capital needs related to our operating segments.

A significant portion of our business in each of our operating segments is performed outdoors. Consequently, our results of operations are exposed to seasonal variations and inclement weather. Our operating segments perform less work in the winter months, and work is hindered during other inclement weather events. In particular, our Utility T&D segment revenue and profitability often decrease during the winter months and during severe weather conditions because work performed during these periods is more costly to complete. During periods of peak electric power demand in the summer, utilities generally are unable to remove their electric power T&D equipment from service, decreasing the demand for our maintenance services during such periods. The seasonality of this segment’s business also causes our working capital needs to fluctuate. Because this segment’s operating cash flow is usually lower during and immediately following the winter months, we typically experience a need to finance a portion of this segment’s working capital during the spring and summer. Conversely, our Canada segment typically posts its strongest results during the winter and summer months and weaker results during what is known as the “Spring breakup,” when road bans and load limits are put in place and workers are often furloughed and equipment idled. Severe winter weather can also create demand for restoration of storm damage to overhead utility lines, which can offer opportunities for high margin emergency restoration work for our Utility T&D segment.

# Our failure to recover adequately on claims against project owners for payment could have a material adverse effect on us.

We occasionally bring claims against project owners for additional costs exceeding the contract price or for amounts not included in the original contract price. These types of claims occur due to matters such as owner-caused delays or changes from the initial project scope, which result in additional costs, both direct and indirect. These claims can be the subject of lengthy arbitration or litigation proceedings, and it is often difficult to accurately predict when these claims will be fully resolved. When these types of events occur and unresolved claims are pending, we may invest significant working capital in projects to cover cost overruns pending the resolution of the relevant claims. A failure to promptly recover on these types of claims could have a material adverse impact on our liquidity and financial condition.

# Our business is dependent on a limited number of key clients.

We operate primarily in the oil and gas and power industries, providing services to a limited number of clients. Much of our success depends on developing and maintaining relationships with our major clients and obtaining a share of contracts from these clients. The loss of any of our major clients could have a material adverse effect on our operations. One client was responsible for approximately 25.0 percent of total contract revenue from continuing operations in 2016. This client was also responsible for 42.6 percent of our 12-month backlog and 45.8 percent of our total backlog at December 31, 2016.

# Terrorist attacks and war or risk of war may adversely affect our results of operations, our ability to raise capital or secure insurance or our future growth.

The continued threat of terrorism and the impact of military and other action will likely lead to continued volatility in prices for crude oil and natural gas and could affect the markets for our operations. In addition, future acts of terrorism could be

directed against companies operating both outside and inside the United States. Further, the U.S. government has issued public warnings that indicate that pipelines and other energy assets might be specific targets of terrorist organizations. These developments may subject our operations to increased risks and, depending on their ultimate magnitude, could have a material adverse effect on our business.

# Our operations are subject to a number of operational risks.

Our business operations include pipeline construction, fabrication, pipeline rehabilitation services and a wide range of services in electric power and natural gas transmission and distribution. We may encounter difficulties that impact our ability to complete a project in accordance with the original delivery schedule. These difficulties may be the result of delays in designs, engineering information or materials provided by the customer or a third party, delays or difficulties in equipment and material delivery, schedule changes, delays from our customer's failure to timely obtain permits or rights-of-way or meet other regulatory requirements, weather-related delays, delays caused by difficult worksite environments and other factors, some of which are beyond our control. We also may encounter project delays due to local opposition, which may include injunctive actions as well as public protests, to the siting of electric transmission lines, pipelines or other facilities, especially those which are located in environmentally or culturally sensitive areas and more heavily populated areas. We may not be able to recover the costs we incur that are caused by delays. In certain circumstances, we guarantee project completion by a scheduled acceptance date or achievement of certain acceptance and performance testing levels. Failure to meet any of our schedules or performance requirements could also result in additional costs or penalties, including liquidated damages, and such amounts could exceed expected project profit. In extreme cases, the above-mentioned factors could cause project cancellations, and we may not be able to replace such projects with similar projects or at all. Such delays or cancellations may impact our reputation or relationships with customers, adversely affecting our ability to secure new contracts.

Our operations also involve a number of operational hazards. Natural disasters, adverse weather conditions, collisions and operator error could cause personal injury or loss of life, severe damage to and destruction of property, equipment and the environment and suspension of operations. In locations where we perform work with equipment that is owned by others, our continued use of the equipment can be subject to unexpected or arbitrary interruption or termination. The occurrence of any of these events could result in work stoppage, loss of revenue, casualty loss, increased costs and significant liability to third parties.

The insurance protection we maintain may not be sufficient or effective under all circumstances or against all hazards to which we may be subject. An enforceable claim for which we are not fully insured could have a material adverse effect on our financial condition and results of operations. Moreover, we may not be able to maintain adequate insurance in the future at rates that we consider reasonable.

# Unsatisfactory safety performance may subject us to penalties, can affect customer relationships, result in higher operating costs, negatively impact employee morale and result in higher employee turnover.

Workplace safety is important to us, our employees and our customers. As a result, we maintain comprehensive safety programs and training to all applicable employees throughout our organization. While we focus on protecting people and property, our work is performed at construction sites and in industrial facilities, and our workers are subject to the normal hazards associated with providing these services. Even with proper safety precautions, these hazards can lead to personal injury, loss of life, damage to or destruction of property, plant and equipment and environmental damage. We are intensely focused on maintaining a strong safety environment and reducing the risk of accidents to the lowest possible level.

Although we have taken what we believe are appropriate precautions to adequately train and equip our employees, we have experienced serious accidents, including fatalities, in the past and may experience additional accidents in the future. Serious accidents may subject us to penalties, civil litigation or criminal prosecution. Claims for damages to persons, including claims for bodily injury or loss of life, could result in costs and liabilities, which could materially and adversely affect our financial condition, results of operations or cash flows.

# We may become liable for the obligations of our joint ventures and our subcontractors.

Some of our projects are performed through joint ventures with other parties. In addition to the usual liability of contractors for the completion of contracts and the warranty of our work, where work is performed through a joint venture, we also have potential liability for the work performed by the joint venture itself. In these projects, even if we satisfactorily complete our project responsibilities within budget, we may incur additional unforeseen costs due to the failure of the joint ventures to perform or complete work in accordance with contract specifications.