In 2020, ONEOK began reporting sustainability information using SASB’s standards for reporting financially material impacts. In addition to focusing on topics of financial materiality, SASB provides industry-specific disclosure standards which aim to drive consistency and comparability of sustainability reporting. The table below provides ONEOK’s performance data aligned with the recommended metrics for the SASB Extractives and Minerals Processing – Oil and Gas Midstream Sector (EM-MD, Version 2018-10). All data represents full-year 2019 information unless otherwise noted. Environmental data represents 100% of ONEOK operating assets.



(1) Gross global Scope 1 emissions
4.2 million metric tons CO2e
(2) Percentage methane
(3) Percentage covered under emissions-limiting regulations0%
Additional information:
ESG Performance Data Table:

Discussion of long- and short-term strategy or plan to manage Scope 1 emissions, emissions reduction targets, and an analysis of performance against those targetsWe are members of Our Nation’s Energy Future Coalition (ONE Future) which sets goals for reducing methane emissions. As part of the coalition, ONEOK has committed to achieve a methane emissions intensity target for our natural gas transmission and storage operations by 2025. Additionally, ONEOK has participated in the EPA Natural Gas STAR program since 2000, and as a member of INGAA, has committed to continuously improve practices to minimize methane emissions.

We established an internal environmental performance metric in 2014 that became a part of the short-term incentive plan performance criteria for all employees. The Agency Reportable Environmental Event Rate (AREER)* metric promotes a continued reduction in spills and emission events that are reportable to a state or federal agency. The 2019 target for AREER represented a 9.5% improvement over the previous year’s actual results. Since the implementation of the AREER metric, we have seen a year over year reduction in our rate of reportable environmental events. In 2019, we achieved our best AREER metric of 0.79. ONEOK’s 2020 AREER target is 0.71.

Additional information:
2020 ESG Report – Environmental and Emissions Management



Air emissions of the following pollutants:
As reported to state and federal agencies:
(1) Nitrogen oxides (NOx)
7.8 thousand tons
(2) Sulfur dioxide SOX
0.2 thousand tons
(3) Volatile organic compounds (VOCS)
4.3 thousand tons
(4) Particulate matter (PM10)0.2 thousand tons
Additional information:
ESG Performance Data Table:



Description of environmental management policies and practices for active operationsONEOK regularly assesses environmental performance across its operations and works to minimize and offset impacts to the environment. Conservation efforts include biodiversity, leak detection, recycling and waste reduction, and energy use management. ONEOK’s approach to land and water management specific to capital-growth projects includes evaluating sites that reduce impacts, activities focused on restoring habitats affected during construction, and assessing water use and opportunities for reduction.

The environmental evaluation of a proposed project location typically involves a review for the presence of the following factors: (1) Threatened and Endangered (T&E) species presence (federally and state listed), (2) proximity to T&E critical habitat, (3) protected lands (state, federal and tribal), (4) documented resources of historical or cultural significance, (5) land use (e.g. forests, farmland and rangeland) and (6) proximity to populated areas. Wherever possible, ONEOK refrains from site selection in protected areas and areas of high biodiversity value.
Additional information:
2020 ESG Report – Environmental and Emissions Management
2020 ESG Report – Conservation and Stewardship

Percentage of land owned, leased, and/or operated within areas of protected conservation status or endangered species habitatONEOK does not currently track.

Terrestrial acreage disturbed, percentage of impacted area restored13,705 acres restored associated with large pipeline projects
Additional information:
2020 ESG Report – Conservation and Stewardship
Number and aggregate volume of hydrocarbon spills, volume in Arctic, volume in Unusually Sensitive Areas (USAs), and volume recoveredTotal above-ground hydrocarbon spills: 21 spills; 157 barrels (bbls)
Volume in Arctic: 0 bbls

Volume in USAs: ONEOK does not currently track.

Volume recovered: ONEOK attempts to recover 100% of spilled volumes, however does not currently track exact totals.

Additional information:
ESG Performance Data Table:


Total amount of monetary losses as a result of legal proceedings associated with federal pipeline and storage regulationsONEOK does not currently track.



Number of reportable pipeline incidents, percentage significant Data below as reported to the Pipeline and Hazardous Materials Safety Administration (PHMSA) for Hazardous Liquid Pipelines (Form PHMSA F 7000-1.1) and Natural Gas Transmission and Gathering (Form PHMSA F 7100.2-1).

Natural Gas Transmission and Regulated Gathering Incidents (defined in CFR* Part 191.3): 6 incidents; 0.0009 incidents per 1,000 miles

Natural Gas Liquids Transmission Accidents (defined in CFR* Part 195.5): 12 accidents; 0.16 accidents per 1,000 miles

*Code of Federal Regulations (CFR)

Percentage of natural gas and hazardous liquids pipelines inspectedData below as reported to PHMSA, representing the percentage of pipelines that have been assessed in 2019 under ONEOK’s Integrity Management Program using inline inspection methods. ONEOK assesses 100% of all High Consequence Areas (HCAs) within the required regulatory timelines using multiple methods in accordance with CFR Part 195 or CFR Part 192.

Natural gas liquids transmission pipelines:
Approximately 35% of total pipeline miles

Natural gas transmission pipelines:
Approximately 15% of total pipeline miles

Number of accident releases and non-accident releases from rail transportationAccident releases: 0

Non-accident releases: 0
Discussion of management systems used to integrate a culture of safety and emergency preparedness throughout the value chain and throughout project lifecyclesONEOK’s overall ESG structure emphasizes an integrated management system approach founded on continuous improvement. The company’s Environment, Safety and Health (ESH) Management System provides expectations and a framework for operating assets safely, reliably, profitably and in an environmentally sensitive manner. Guidance and oversight of ONEOK’s ESH and sustainability performance is provided by a cross-functional ESG Council, by ONEOK’s ESH Leadership Committee, and ultimately by the ONEOK Board of Directors.
Additional information:
2020 ESG Report – Safety and Health



Total metric ton-kilometers of natural gas, crude oil, and refined petroleum products transported, by mode of transportThe metrics reported below are commonly used in the midstream industry for reporting pipeline transportation volumes. Natural gas liquids volumes below represent only Federal Energy Regulatory Commission (FERC)-regulated pipeline volume, which accounts for the majority of ONEOK’s total NGL volume transported. Natural gas pipelines volume represents all interstate and intrastate natural gas pipelines. Natural gas shipped on multiple pipeline systems could be double-counted.

Natural Gas Liquids: 204.84 billion bbl miles
Natural Gas Pipelines: 1,615.4 billion cubic feet (BCF)

Note: ONEOK does not report transported volume in metric ton-kilometers.

This table, and the data provided therein (the “Data”), is provided for informational purposes only. Neither ONEOK, Inc., nor any of its affiliates (collectively, “ONEOK”) makes, and hereby expressly disclaims, any representation or warranty as to the accuracy or completeness of the Data contained herein. ONEOK has no obligation or duty to (1) update or correct the Data, (2) provide additional details regarding the Data, or (3) continue to provide the Data, in any form, in the future. The table and Data may be modified, updated, changed, deleted or supplemented (collectively, “Modifications”) from time to time without notice and ONEOK reserves the right to make any such Modifications in its sole discretion. In some cases, the Data is based on information prepared by third party vendors and consultants of ONEOK and is not independently verified by ONEOK. The Data should not be interpreted as any form of guaranty or assurance of future results or trends. Unless otherwise provided, this table and the Data contained therein, is expressly not incorporated by reference into any filing of ONEOK made with the United States Securities and Exchange Commission, or any other filing, report, application or statement made by ONEOK to any federal, state, tribal or local governmental authority.