Environmental

Air Quality

Why It Matters to Us

Air emissions associated with our fleet, onsite equipment, and other aspects of our operations can impact local air quality. We carefully monitor our local air emissions and sources to capitalize on innovative opportunities to improve our systems and processes. We work with regulators, communities, and other stakeholders to decrease our impact and reduce local air emissions.

For information related to greenhouse gas emissions, see Operational GHG Emissions.

What We Are Doing

We monitor operational air emissions in compliance with relevant state and federal regulations. We use this data to inform the continuous improvement of our processes and procedures. Individual permits require activity and emissions data tracking and, in most cases, our historical data inventories date back to 2011. Across our operations, we continue to implement new and improved technologies that lead to more efficient processes and reduction of local air emissions.

Governance

Our environmental program is managed by our Director, Environmental, Health, and Safety (EHS) — who is responsible for the oversight and management of all aspects of our environmental footprint. Our environmental program is guided by the Public Policy and Corporate Responsibility (PPCR) Committee of the Board of Directors and by our management-level Environmental, Social, and Governance (ESG) Committee. The Air Quality team, within the EHS department, is responsible for air quality permitting, compliance, and reporting. The PPCR Committee receives quarterly reports on environmental progress such as emission reports, notices of violations, and strategic initiatives directed at improving our emissions profile.

Permits and Monitoring

Prior to construction or operation at a new well site location, we may be required to obtain air quality and other operational permits. When we receive a new permit, our Operations group reviews the permit to identify all future compliance responsibilities. Permit requirements are translated into field site Job Plans that are completed in the field by operations personnel. We track emissions, obligations, limits, and other air quality requirements using dashboards and other tools within our digital work environment. The Air Quality team monitors several field indicators for operational changes that could impact our emissions profile while proactively working with Operations personnel to verify that permits are in place prior to field construction. To gain better insight into tracking, analyzing, and projecting our emissions, we built a proprietary emissions model that enables all our employees to view and export our emissions data from a centralized data repository. The emissions model allows us to both track our historical emissions and project emissions up to seven years into the future based on our current assets and production schedule.

Electrifying Our Fracturing Fleets

In alignment with our focus on decreasing completion costs and minimizing environmental impact, we have transitioned substantially all our hydraulic fracturing (frac) fleets from diesel to electric power. These electric frac fleets use onsite natural gas to power a portion of our completions operations. Electric frac fleets have eliminated approximately 20 million gallons of diesel fuel from our operations annually and several thousand water hauling truck runs from the roadways. Using onsite natural gas to power our frac fleets enables us to reduce local air emissions, decrease our carbon footprint, reduce trucks on the road, and capture proven operational efficiencies.