Environmental Management

At Crestwood, we recognize our responsibility to effectively manage our air emissions, spill prevention and response and waste management. This responsibility is upheld by people across all Crestwood’s operations including employees, contractors, executives and our Board of Directors.

Our Approach

Crestwood’s environmental management program is guided by our Health, Safety and Environmental Policy. Our quantitative and qualitative environmental performance metrics and regulatory compliance status are reported to our internal Sustainability Steering Committee on a quarterly basis and to our board-level Sustainability Committee on an annual basis. 

We regularly seek improvement opportunities through the use of industry best practices across our assets to reduce our operational footprint and environmental impacts.

Criteria Air Emissions

Our operations generate air emissions such as nitrogen oxides (NOx), sulfur oxides (SOx), particulate matter (PM) and volatile organic compounds (VOCs) – most of these emissions primarily come from combustion. We look for ways to reduce these emissions through operational practices, eliminated redundancy and well-maintained, efficient equipment. We continue to invest in NOx emission controls for our relevant assets and, prior to purchase and installation, certify new equipment meets or exceeds the latest air emissions performance standards.

Other efforts taken to reduce our air emissions include:

Air Emissions Metrics

Air Emissions Metrics
Nitrogen Oxides (NOx) (Metric Tons) 638.80
Sulfur Oxides (SOx) (Metric Tons) 6.71
Volatile Organic Compounds (VOCs) (Metric Tons) 633.25
Particulate Matter (PM) (Metric Tons) 57.37

In 2021, we reduced NOx emissions by 8.5 percent due to the divestiture of our Fayetteville assets and continued operational efficiencies. Our SOx and VOCs were reduced 14 percent and 10 percent, respectively. Our NOx and VOC reductions were largely due to lower actual emissions results from testing at key compressor stations, decreased flaring at gas processing facilities and our enhanced frequency on conducting leak, detection and repair and optical gas imaging surveys on key methane emitting facilities. Our SOx reductions were primarily driven by a decline in engine run hours at key facilities.

To learn more about our efforts to monitor and reduce GHG emissions, visit the Carbon Management page.

Managing Waste 

Crestwood further demonstrates our commitment to environmental stewardship in the way that we manage waste from generation to disposal. 

In 2021, we focused on enhancing our waste quantification and management practices. We updated our corporate Waste Management Standard to include new ways to digitize and optimize waste workflows like fuel tickets and manifests. Full waste management plans were updated for over 50 facilities spanning our operations. Each plan is tailored to the operational activities and specific state requirements of the facility and aligned with our corporate Waste Management Standard. Our primary waste streams include hazardous and non-hazardous waste. Where possible, we prioritize recycling of batteries, metal, used oil, light bulbs and limited chemicals.

We encourage employees and contractors to be diligent of both field and office waste, and incorporate waste management, avoidance and reduction practices such as:

Waste Metrics1

Waste (Metric tons) 2020 2021
Non-hazardous waste 747 831
Hazardous waste 2 1
Landfill disposal 629 679
Recycled disposal 118 153

1 In 2020, we enhanced our waste data collection and analysis to better align with reporting expectations. We are unable to recalculate our 2019 data into metric tons with reasonable accuracy and therefore have not included it. We continued improvements to our waste data collection in 2021. Increases in waste volumes in 2021 are partially a result of the implementation of more robust tracking systems. We look forward to improving our waste management practices as the quality of our data improves. 

Preventing and Mitigating Spills and Releases

We strive to promote an environmentally friendly operating culture of zero tolerance for spills. Our operations are designed to reduce the risk of releases to the environment. Employees and contractors are trained to maintain responsible construction and operating practices and prepare for response, if an incident does occur. After any incident, we conduct a root-cause analysis to understand why the incident occurred and implement measures to prevent the incident from reoccurring. 

Crestwood’s response plans include:

  • Facility Spill Prevention, Control and Countermeasure (SPCC) Plans
  • Risk Management Plans (RMPs)
  • Emergency Response Plans (ERPs)

Asset Integrity

Crestwood manages an ongoing Asset Integrity program to maintain the safety of our system and protect the environment and communities where we operate. Our Asset Integrity team of engineers, corrosion specialists, GIS professionals and field technicians is responsible for maintaining the integrity, reliability and efficiency of our assets. The goal of the Asset Integrity program is to minimize operational risk, maintain asset value, meet regulatory responsibilities and improve the efficiency of Crestwood assets. 

Our Asset Integrity program is rooted in sustainability, with a full-cycle design to promote operational accountability and stability. Executing this strategy requires implementation across the entire lifecycle of our assets, including development, design, construction, testing, operation and decommissioning. 

Regulatory Risk Management and Compliance

Managing environmental risks requires a trained and educated workforce. We achieved our participation goal with 100% of our employees completing their required environmental training. Environmental training is updated with industry best practices content annually. Our field-based team members are also trained on key environmental programs such as: Environmental Awareness, Ground Disturbance and Excavation, Spill Prevention Contingency and Countermeasures (SPCC), Hazardous Waste Awareness (RCRA) and Crestwood-specific initiatives including Flaring Minimization Training.

100% of our employees completed their required environmental training

Our Environmental Management Information System (EMIS) is designed to manage ongoing compliance with permits and regulatory requirements. The EMIS is integrated with the key operational systems, such as asset management systems, operator inspection logs and round sheets and our work order task manager program. 

We routinely conduct visual inspections and self- and third-party audits to maintain compliance with regulatory requirements. The findings and incorporation of the lessons learned from these processes are what drives continuous improvement in our environmental management process. 

Environmental Management Metrics

Number of External Environmental Inspections






 Number of External Environmental Inspections





Looking Ahead

As we enhance our approach to environmental management, in 2022, we aim to: