CDP. Climate Change 2017 Information Request Occidental Petroleum Corporation. Module: Introduction. Page: Introduction CC0.1

CDP Climate Change 2017 Information Request Occidental Petroleum Corporation Module: Introduction Page: Introduction CC0.1 Introduction Please give a general description and introduction to your organization. Occidental Petroleum Corporation's (Oxy's) principal businesses consist of three segments: (1) oil and gas exploration and production; (2) midstream and marketing; and, (3) chemicals (OxyChem). The oil and gas segment explores for, develops and produces crude oil and condensate, natural gas liquids (NGL) and natural gas. The midstream and marketing segment gathers, processes, transports, stores, purchases and markets oil, condensate, NGLs, natural gas and carbon dioxide (CO2), and generates power. OxyChem is a leading manufacturer of PVC resins, vinyls, chlorine and caustic soda key building blocks to life-enhancing products such as pharmaceuticals, water treatment chemicals, building materials and plastics. Everywhere we operate, Oxy applies a robust environmental risk management approach and operational practices to increase energy efficiency and reduce greenhouse gas emissions and air pollution, even while expanding our production. Oil and natural gas operations are the core of Oxy s business. Our exploration and production activities are concentrated in three geographic regions: the United States, the Middle East and Latin America. In each of these regions, we focus on shorter-cycle and long-lived oil and gas assets where we can increase production by applying appropriate technology and advanced reservoir management practices. We believe that using existing infrastructure -- and avoiding, in many cases, the need to develop greenfield land, build new roads, pipelines and storage and processing facilities -- to recover additional oil and gas from existing fields provides significant life-cycle environmental benefits. Oxy s CO2 Enhanced Oil Recovery (EOR) techniques for increased oil production is a key competitive advantage for the company. Oxy is an industry leader in applying this technology. CO2 EOR can have environmental benefits. Much of the CO2 purchased to implement the CO2 flood ultimately becomes permanently and safely trapped in the underground oil reservoir contributing to the reduction of future greenhouse gas emissions to the atmosphere. Each year we inject more than 700 billion cubic feet of CO2 into oil reservoirs in the Permian Basin, making Oxy the largest injector of CO2 for EOR in the Permian Basin, and among the largest globally. CC0.2 Reporting Year 1

Please state the start and end date of the year for which you are reporting data. The current reporting year is the latest/most recent 12-month period for which data is reported. Enter the dates of this year first. We request data for more than one reporting period for some emission accounting questions. Please provide data for the three years prior to the current reporting year if you have not provided this information before, or if this is the first time you have answered a CDP information request. (This does not apply if you have been offered and selected the option of answering the shorter questionnaire). If you are going to provide additional years of data, please give the dates of those reporting periods here. Work backwards from the most recent reporting year. Please enter dates in following format: day(dd)/month(mm)/year(yyyy) (i.e. 31/01/2001). Enter Periods that will be disclosed Fri 01 Jan 2016 - Sat 31 Dec 2016 CC0.3 Country list configuration Please select the countries for which you will be supplying data. If you are responding to the Electric Utilities module, this selection will be carried forward to assist you in completing your response. Select country United States of America Canada Bolivia Colombia Oman Qatar Chile CC0.4 Currency selection 2

Please select the currency in which you would like to submit your response. All financial information contained in the response should be in this currency. USD($) CC0.6 Modules As part of the request for information on behalf of investors, companies in the electric utility sector, companies in the automobile and auto component manufacturing sector, companies in the oil and gas sector, companies in the information and communications technology sector (ICT) and companies in the food, beverage and tobacco sector (FBT) should complete supplementary questions in addition to the core questionnaire. If you are in these sector groupings, the corresponding sector modules will not appear among the options of question CC0.6 but will automatically appear in the ORS navigation bar when you save this page. If you want to query your classification, please email respond@cdp.net. If you have not been presented with a sector module that you consider would be appropriate for your company to answer, please select the module below in CC0.6. Further Information Module: Management Page: CC1. Governance CC1.1 Where is the highest level of direct responsibility for climate change within your organization? Board or individual/sub-set of the Board or other committee appointed by the Board CC1.1a Please identify the position of the individual or name of the committee with this responsibility The Environmental, Health and Safety Committee of the Board of Directors is responsible for overseeing Oxy's management of issues regarding greenhouse gas emissions. This Committee is comprised of six independent directors and meets five times each year. It provides Board-level oversight on health, environmental, 3

climate change and safety issues. The Board supports Oxy s efforts to enhance energy efficiency of operations, control emissions of GHG and air pollutants, and to engage and educate stockholders and other public parties through voluntary reporting on Oxy s environmental stewardship. CC1.2 Do you provide incentives for the management of climate change issues, including the attainment of targets? Yes CC1.2a Please provide further details on the incentives provided for the management of climate change issues Who is entitled to benefit from these incentives? The type of incentives Incentivized performance indicator Comment All employees Monetary reward Emissions reduction project Energy reduction project Efficiency project Behavior change related indicator Environmental criteria included in purchases Oxy seeks to meet its strategic goals by continually measuring its success in its key performance metrics that drive total stockholder return. In addition to production growth and capital allocation and deployment, Oxy incorporates a range of health, environmental, safety and process metrics. All employees Recognition (non-monetary) Emissions reduction project Energy reduction project Efficiency project Behavior change related indicator Environmental criteria Oxy's "On-the-Spot" recognition program rewards employees who demonstrate core values, promote a positive team environment and contribute to Oxy s success. 4

Who is entitled to benefit from these incentives? The type of incentives Incentivized performance indicator Comment included in purchases Further Information Page: CC2. Strategy CC2.1 Please select the option that best describes your risk management procedures with regard to climate change risks and opportunities Integrated into multi-disciplinary company wide risk management processes CC2.1a Please provide further details on your risk management procedures with regard to climate change risks and opportunities Frequency of monitoring To whom are results reported? Geographical areas considered How far into the future are risks considered? Comment Annually Board or individual/sub-set of the Board or committee appointed by the Board all 1 to 3 years Internal corporate engagement and discussion of longer-term risks and opportunities, particularly with regard to carbon and fossil fuels regulations, are reported to the Board and the Environmental, Health and Safety Committee. 5

CC2.1b Please describe how your risk and opportunity identification processes are applied at both company and asset level Oxy's Health, Environment and Safety Management System provides a rigorous methodology to help the company identify and assess specific environmental, social and operational impacts across all our businesses with regard to climate risk, community resiliency and changes to regulatory frameworks. At the asset level, Oxy integrates climate change issues into business decision making through a multi-disciplinary committee of managers, several of whom meet directly with Oxy's Board Committee. Taking into consideration a range of energy scenarios, Oxy factors carbon pricing and energy intensity assumptions to understand a range of risk around commodity prices, returns on capital, and the risks and opportunities of GHG abatement and CO2 utilization options. The scope of this assessment includes the consideration of international accords, treaties, legislation, regulation and fiscal policy initiatives that may affect the raw materials, other inputs and costs to produce our products, and the demand for and the restrictions on the use of our products. The process of risk evaluation also includes potential physical and social impacts relating to severe weather events and disruption due to proximity to flood-prone and water-stressed areas. Opportunity evaluation includes the commoditization, marketing or beneficial use of low-carbon energy supplies, GHGs including CCS and CCUS. Oxy s mitigation of GHG emissions include utilizing CO2 injection for enhanced oil recovery in concert with CCS as a means of permanently sequestering CO2 and the potential to mitigate greater amounts of CO2 through the expansion of CCS/CCUS. The U.S. Government and the Intergovernmental Panel on Climate Change (IPCC) both support CCUS as part of a suite of pathways to reduce anthropogenic carbon emissions. Crucially, the IPCC and International Energy Agency project that most climate change models cannot meet the 1.5-2 degrees Celsius global warming scenarios without using CCUS technologies. CC2.1c How do you prioritize the risks and opportunities identified? Health, Environment and Safety (HES) risk management policies, standards and procedures are in-place at all operating locations and levels of the organization to identify, prioritize and apply feasible risk mitigation options. The company's Risk Management Community of Practice leverages the collective expertise of the company's professionals to share opportunities for improvement. Higher-level risks are reported, validated by business segment management and reviewed annually with senior management and the Environmental, Health and Safety Committee of the Board of Directors, assuring that HES risk management is among Oxy's highest priorities. These risks undergo rigorous analysis to identify, prioritize and implement appropriate mitigation measures that are designed to improve performance. Our risk management approach facilitates compliance with laws and regulations and the management of HES and social responsibility risks to improve overall business performance. It encourages individual responsibility, values quantifiable results and promotes communication among employees, contractors, neighboring communities, government authorities and other stakeholders. Opportunities are considered at the facility, business unit or corporate level, as appropriate, and are risk-weighted and prioritized with all other value creating opportunities using strategic and commercial business indicators consistent with our overall goal of maximizing total returns to stockholders. CC2.1d Please explain why you do not have a process in place for assessing and managing risks and opportunities from climate change, and whether you plan to introduce such a process in future 6

Main reason for not having a process Do you plan to introduce a process? Comment CC2.2 Is climate change integrated into your business strategy? Yes CC2.2a Please describe the process of how climate change is integrated into your business strategy and any outcomes of this process Our business decision-making process integrates climate change-related issues with other business priorities to help us effectively manage greenhouse gas (GHG) emissions, the social and economic impacts of Oxy s energy use and further the company's commitment to be an efficient, low-cost producer of oil and gas and commodity chemicals. Efforts to mitigate or adapt to climate change while maintaining cost-effective energy and chemicals supplies and the reliable, energy-efficient production of electricity present both challenges and opportunities for society and for Oxy. Our longstanding policy is to seek continuous improvement in resource recovery, conservation, pollution prevention and energy efficiency. Oxy integrates climate change issues into our business decisions through a team of managers and employees, with oversight from the Board of Directors' Environmental, Health and Safety Committee. The process to integrate climate issues into the business strategy is multi-tiered, occurring at the corporate, business unit and facility levels. It involves a cross-section of staff and management at all three tiers. Oxy also engages with investors, industry working groups, NGOs and other experts to assess their input. Financial implications are assessed considering current and estimated future costs and prices for energy, raw materials and electricity, demand for fossil fuels and emission fees and permits. Oxy incorporates these considerations into business decision-making through management meetings. Our business strategy includes the risk and opportunity aspects associated with climate change, such as physical, regulatory changes, commercial and reputational. Disclosure of this process is found in the Occidental Annual Report, Form 10-K and at its Social Responsibility website. Oxy publishes information on our approach to reserves estimation and capital planning and allocation. The process used to estimate oil and gas reserves includes economic feasibility at the prevailing commodity prices; changes in proved reserves, including downward revisions of previous estimates due to changes in economic conditions. Oxy provides an Industry Outlook that identifies factors influencing the price of Oxy s products. Also considered are the actions of governments, such as actual or proposed international, national, regional and state GHG control measures, the International Energy Agency (IEA) published scenarios and the recommendations of quasigovernment agencies such as the Financial Stability Board s Task Force on Climate-related Financial Disclosures (FSB TCFD). Outcomes of this process to integrate climate change considerations into our business strategy help inform our active engagement with institutional stockholders, state and national-level regulators, environmental groups and other public stakeholders addressing climate risks. We work with governments, companies, peer companies in our industry sector and civil society organisations to facilitate the development of viable global policies and regulatory frameworks. The engagement with these stakeholders has initiated a constructive dialogue. Oxy participates in domestic and international industry initiatives, such as the IPIECA Task Force on 7

Climate Change and the Global Carbon Capture and Storage Institute that focus on GHG mitigation solutions and global climate change-related risks and opportunities. CC2.2b Please explain why climate change is not integrated into your business strategy CC2.2c Does your company use an internal price on carbon? Yes CC2.2d Please provide details and examples of how your company uses an internal price on carbon Oxy has integrated certain carbon pricing scenarios into the economic valuations of our proven reserves and to test our portfolio. Oxy has developed annual GHG price forecasts for companywide use in long-range planning and new project investment-related evaluations. The impacts of carbon pricing, among other considerations, on new investment projects are reviewed in light of the specific investment criteria, operating context and life-cycle of the project. If a carbon regulation is in effect in a particular country where we are doing business, the cost of carbon is part of the base financial analysis. Example: Oxy is a global leader in the application of Enhanced Oil Recovery (EOR) using carbon dioxide (CO2 ) to generate growth of its production and reserves. Operating more than 30 active CO2 EOR projects, Oxy injects over 700 billion cubic feet of CO2 each year. CO2 represents a current operating cost to Oxy s EOR business and a future business opportunity to realize revenues from carbon capture and from the utilization of other anthropogenic sources of CO2. Oxy prices the cost of CO2 recycled from its own resources and the purchase price of additional supply of CO2 from industrial producers and commercial suppliers. Under 45Q of the current Internal Revenue Code, there is a credit of $10 per metric ton of qualified CO2 that is captured as a tertiary injectant in a qualified EOR project, and disposed of in secure geological storage. In 2016, Oxy gained first-ever approval from the U.S. EPA to use a Measuring, Reporting and Verification (MRV) Plan to measure and account for the amount of greenhouse gases that are injected and sequestered safely underground through our CO2 EOR operations in West Texas. Since then, Oxy has received approval for a second MRV Plan at an additional CO2 facility. CC2.3 Do you engage in activities that could either directly or indirectly influence public policy on climate change through any of the following? (tick all that apply) 8

Direct engagement with policy makers Trade associations Other CC2.3a On what issues have you been engaging directly with policy makers? Focus of legislation Corporate Position Details of engagement Proposed legislative solution Adaptation resiliency Mandatory carbon reporting Regulation of methane emissions Support Support with minor exceptions Neutral Oxy engages the U.S. EPA and Department of Energy, among other agencies, to explain our use of anthropogenic carbon dioxide (CO2) for enhanced oil recovery (EOR) operations. Oxy received approval from the U.S. Government for a first-of-its-kind Monitoring, Reporting and Verification (MRV) Plan that quantifies the amount of CO2 sequestered during CO2 EOR. The MRV Plan compliments our statutory GHG emissions reporting to the EPA. Oxy works with the National Enhanced Oil Recovery Initiative (NEORI) to support Carbon Capture Utilization and Storage (CCUS) incentive legislation and fiscal policies to spur commercial deployment of technologies to enable the capture of anthropogenic CO2 and the permanent and safe geologic storing of CO2 underground. Oxy engages the U.S. EPA and associated state-level agencies on the EPA Greenhouse Gas Reporting Program (GHGRP), both directly and through its trade associations. Oxy monitors changes in applicable regulations, comments on technology, management systems for collecting and reporting data and provides information on testing and data collection to improve the GHGRP requirements and accuracy of the data collected. Oxy is an active and longstanding voluntary participant in the U.S. EPA Natural GasSTAR program and the Global Methane Initiative. Working collaboratively with the EPA, Oxy has helped to develop the GasSTAR Program guidelines, tested practices and technology and has implemented solutions aimed to reduce fugitive methane emissions. Oxy also engaged with EPA during the development of its recently promulgated methane emission rulemaking by offering technical data and ideas for improving the effectiveness of the rules. Advocacy to support legislation to make the existing federal CCUS incentive permanent so greater amounts of anthropogenic CO2 will be captured and sequestered during CO2 EOR operations, thereby reducing CO2 emissions to the atmosphere. Oxy works through its trade associations and independently with the U.S. EPA. The U.S. EPA, the federal Bureau of Land Management and their counterparts have adopted, or are in the process of adopting, regulations to further regulate methane emissions. 9

Focus of legislation Corporate Position Details of engagement Proposed legislative solution Carbon tax Neutral Oxy watches and monitors closely the proposed legislative and/or fiscal measures with regards to an explicit price on carbon. Any approach to regulating GHG emissions should be holistic. Oxy does not support legislative proposals that regulate some sectors while omitting others. Any legislative decision to impose mandatory GHG emission controls must be holistic and applied to all direct and indirect emitters of GHGs. CC2.3b Are you on the Board of any trade associations or provide funding beyond membership? Yes CC2.3c Please enter the details of those trade associations that are likely to take a position on climate change legislation Trade association Is your position on climate change consistent with theirs? Please explain the trade association's position How have you, or are you attempting to, influence the position? American Petroleum Institute American Chemistry Council Consistent Consistent API addresses climate change issues affecting the US oil and natural gas industry. API has a working group that oversees API s Climate Challenge Program, including participation in government initiated voluntary GHG reduction programs, as well as the development of the API Compendium methodology for estimating oil and gas industry greenhouse gas emissions. As an ACC member company, Oxy is committed to following the Responsible Care Guiding Principles: Promotion of pollution prevention, minimization of waste and conservation of energy and other critical resources at every stage of the life cycle of products; Cooperation with governments at all levels and organizations in the development of effective and efficient safety, health, environmental and security laws, regulations and standards. Oxy is an active member and contributor to API, engaging on certain GHG issues and other health, environment and safety standards and industry practices. Oxy is an active member and contributor to the ACC and is a Responsible Care Company. Oxy supports advocacy efforts on relevant issues, including product stewardship and other health, environment and safety standards and industry practices. 10

Trade association Is your position on climate change consistent with theirs? Please explain the trade association's position How have you, or are you attempting to, influence the position? Texas Oil and Gas Association American Exploration and Production Council National Enhanced Oil Recovery Institute Consistent Consistent Consistent State level legislative advocacy; opposition to local/municipal oil and gas drilling ordinances that conflict with state law or policy. AXPC engages with EPA to improve the Greenhouse Gas Reporting Framework standards and its leak detection and repair program methodologies for reducing GHG emissions. NEORI was formed to help realize CO2-EOR s full potential as an energy security, economic, and environmental strategy. NEORI advocates for carbon capture through EOR and by supporting legislation to expand and reform the Section 45Q federal tax credit. Oxy is an active member of the TXOGA. Oxy is an active member of the AXPC. Oxy is an active member of the NEORI. CC2.3d Do you publicly disclose a list of all the research organizations that you fund? CC2.3e Please provide details of the other engagement activities that you undertake Oxy engages with and belongs to the Global CCS Institute. Global CCS Institute is an international membership organization to accelerate the development, demonstration and deployment of carbon capture and storage, by sharing expertise, building capacity and providing advice and support so that this vital technology can play its part in reducing greenhouse gas emissions. The Institute s membership consists of governments, private-sector companies, research bodies and nongovernment organizations committed to CCS as an integral pathway to a low-carbon future. Oxy is a member company to IPIECA, the global oil and gas industry association for environmental and social issues. Through IPIECA, Oxy is helping industry be part of the climate change solution by developing industry-relevant guidelines on GHG reporting, best practices on energy efficiency and GHG emissions management. IPIECA members meet several times each year and convene expert workshops to explore key climate-related issues, informing a broad base of global stakeholders such as government agencies and the UN Convention on Climate Change (UNFCCC) and the Inter-governmental Panel on Climate Change (IPCC). 11

CC2.3f What processes do you have in place to ensure that all of your direct and indirect activities that influence policy are consistent with your overall climate change strategy? Oxy s participation in trade associations and other advocacy organizations is regularly evaluated based primarily on the value each association provides to help advance our corporate near and long-term interests. Trade association policy and advocacy positions typically reflect a consensus among members of the association with wide ranging interests and areas of focus. Oxy does not necessarily share or endorse every position taken by every trade association to which it belongs. Occidental's Board of Directors and the Government Affairs Committee approves Oxy s membership in any advocacy group or trade organizations that require or would require annual dues payments in excess of $50,000. CC2.3g Please explain why you do not engage with policy makers Further Information Page: CC3. Targets and Initiatives CC3.1 Did you have an emissions reduction or renewable energy consumption or production target that was active (ongoing or reached completion) in the reporting year? No CC3.1a Please provide details of your absolute target 12

ID Scope % of emissions in scope % reduction from base year Base year Base year emissions covered by target (metric tonnes CO2e) Target year Is this a sciencebased target? Comment CC3.1b Please provide details of your intensity target ID Scope % of emissions in scope % reduction from base year Metric Base year Normalized base year emissions covered by target Target year Is this a sciencebased target? Comment CC3.1c Please also indicate what change in absolute emissions this intensity target reflects ID Direction of change anticipated in absolute Scope 1+2 emissions at target completion? % change anticipated in absolute Scope 1+2 emissions Direction of change anticipated in absolute Scope 3 emissions at target completion? % change anticipated in absolute Scope 3 emissions Comment CC3.1d Please provide details of your renewable energy consumption and/or production target 13

ID Energy types covered by target Base year Base year energy for energy type covered (MWh) % renewable energy in base year Target year % renewable energy in target year Comment CC3.1e For all of your targets, please provide details on the progress made in the reporting year ID % complete (time) % complete (emissions or renewable energy) Comment CC3.1f Please explain (i) why you do not have a target; and (ii) forecast how your emissions will change over the next five years (i) Fossil fuels and fossil-fuel derived chemicals are essential to the dramatic increases in life expectancy, industrial productivity, life-saving technology innovation and economic wealth generation. Oxy does not believe that setting absolute GHG emission reduction goals is an effective way for an oil, gas and chemical company to supply life-essential products while responsibly managing climate risks. Oxy will continue to report publicly and transparently on its overall GHG emissions management and environmental stewardship programs. As the company engages with its stockholders and representatives of relevant government and regulatory agencies on effective ways to mitigate and adapt to climate change, Oxy s position on the relevance and effectiveness of emissions target(s) may evolve. (ii) Oxy is committed to responsible environmental stewardship throughout its operations. We consistently assess and manage our GHG emissions and pursue continuous improvement in the efficient production of oil and gas and commodity chemicals. Oxy will pursue lower carbon intensive sources of energy including renewable energy sources that leverage the company s strengths and that can be deployed with competitive economic returns. CC3.2 14

Do you classify any of your existing goods and/or services as low carbon products or do they enable a third party to avoid GHG emissions? Yes CC3.2a Please provide details of your products and/or services that you classify as low carbon products or that enable a third party to avoid GHG emissions Level of aggregation Description of product/group of products Are you reporting low carbon product/s or avoided emissions? Taxonomy, project or methodology used to classify product/s as low carbon or to calculate avoided emissions % revenue from low carbon product/s in the reporting year % R&D in low carbon product/s in the reporting year Comment Group of products Companywide By using CO2 injection with other EOR technologies, Oxy has been able to recover significantly more of the oil in place in existing reservoirs, thereby increasing the productivity and lengthening the life of existing fields. Essentially all injected CO2 becomes sequestered in the oil and gas reservoir. Leveraging the lessons learned from CO2 injection for CO2 EOR, there is the potential to significantly reduce GHG emissions through underground injection of CO2, if it can be done at sufficient scale. The development and production of natural gas as a cleaner fuel for power generation, heating and transportation. Avoided emissions Low carbon product Other: US EPA Monitoring, Reporting and Verification (MRV) Plan, as part of the GHGRP Other: API Compendium of GHG Emissions Estimation Methodologies for the Oil and Natural Gas Industry 0% 8.4% Less than or equal to 10% Less than or equal to 10% In 2016, Oxy spent approximately 10% of capital budget to its Permian EOR business in order to add to existing facilities to increase CO2 production and injection capacity. 15

Level of aggregation Description of product/group of products Are you reporting low carbon product/s or avoided emissions? Taxonomy, project or methodology used to classify product/s as low carbon or to calculate avoided emissions % revenue from low carbon product/s in the reporting year % R&D in low carbon product/s in the reporting year Comment Product OxyChem is developing a new raw material for use in the production of an advanced climatefriendly refrigerant. This new product produces a refrigerant with low global warming potential and ozone depletion potential. The refrigerant is approved by the U.S. EPA and meets European Union regulatory requirements for automobile air conditioning systems. Low carbon product Addressing the Avoided Emissions Challenge- Chemicals sector 0% Less than or equal to 10% CC3.3 Did you have emissions reduction initiatives that were active within the reporting year (this can include those in the planning and/or implementation phases) Yes CC3.3a Please identify the total number of projects at each stage of development, and for those in the implementation stages, the estimated CO2e savings Stage of development Number of projects Total estimated annual CO2e savings in metric tonnes CO2e (only for rows marked *) Under investigation 0 0 16

Stage of development Number of projects Total estimated annual CO2e savings in metric tonnes CO2e (only for rows marked *) To be implemented* 1 0 Implementation commenced* 2 3700000 Implemented* 5 29600 Not to be implemented 0 0 CC3.3b For those initiatives implemented in the reporting year, please provide details in the table below Activity type Description of activity Estimated annual CO2e savings (metric tonnes CO2e) Scope Voluntary/ Mandatory Annual monetary savings (unit currency - as specified in CC0.4) Investment required (unit currency - as specified in CC0.4) Payback period Estimated lifetime of the initiative Comment Low carbon energy installation Energy efficiency: Processes Energy efficiency: Processes On-site combined wind and solar PV power generation Construction of gas-fired combined heat and power facility Electrification of well pad and drilling sites, commensurate fuel switching from diesel generators Scope 1 Voluntary 16-20 years Scope 1 Scope 1 Voluntary Voluntary >30 years 3-5 years 17

Activity type Description of activity Estimated annual CO2e savings (metric tonnes CO2e) Scope Voluntary/ Mandatory Annual monetary savings (unit currency - as specified in CC0.4) Investment required (unit currency - as specified in CC0.4) Payback period Estimated lifetime of the initiative Comment Waste recovery Energy efficiency: Processes Process emissions reductions Installation of methane Leak Detection and Repair (LDAR) systems and Vapor Recovery Units (VRU) for pumps, valves and controllers; infrared camera surveys on a routine basis to complement LDAR program, along with an active Management of Change Program using Maximo tracking and work order maintenance; pipeline compressor optimization. Improve and/or maintain power generation fleet reliability in concert with our role in the Texas Demand Responsive Service, which helps the grid operator (ERCOT) reduce emissions and maintain reliability. OxyChem plants in Texas and Louisiana benefited from retrofitting equipment that improved energy efficiency resulting in cumulated energy savings of 387,000 MMBTU, or 24000 Scope 1 Scope 1 Scope 2 (locationbased) Scope 1 Voluntary Mandatory Voluntary <1 year 3-5 years 6-10 years Certain projects undertaken as part of compliance programs (e.g. U.S. EPA GHGRP and Subpart W), or are voluntary projects to realize cost savings, and pilot new technologies and standards in collaboration with industry and regulatory partners. 18

CC3.3d If you do not have any emissions reduction initiatives, please explain why not Further Information Page: CC4. Communication CC4.1 Have you published information about your organization s response to climate change and GHG emissions performance for this reporting year in places other than in your CDP response? If so, please attach the publication(s) Publication Status Page/Section reference Attach the document Comment In voluntary communications In voluntary communications Complete Underway - this is our first year http://www.oxy.com/socialresponsibility Oxy's Social Responsibility (SR) reporting focuses on the policies, objectives, performance and activities of the company and its subsidiaries. Our corporate website provides updates to year-end performance and information on ongoing activities, environmental stewardship practices and annual GHG emissions performance. Oxy is crafting a climate assessment report, in response to a 2017 shareholder proposal, to compliment the company's existing compendium of 20

Publication Status Page/Section reference Attach the document Comment In other regulatory filings Complete Risk Factors, pg. 7 https://www.cdp.net/sites/2017/49/13649/climate Change 2017/Shared Documents/Attachments/CC4.1/OXY2016_AR.pdf climate-related and GHG emissions performance disclosures at our corporate website and in the Annual Report. 2016 Annual Report and Form 10-K Further Information Module: Risks and Opportunities Page: CC5. Climate Change Risks CC5.1 Have you identified any inherent climate change risks that have the potential to generate a substantive change in your business operations, revenue or expenditure? Tick all that apply Risks driven by changes in regulation Risks driven by changes in physical climate parameters Risks driven by changes in other climate-related developments CC5.1a Please describe your inherent risks that are driven by changes in regulation 21

Risk driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Air pollution limits Emission reporting obligations Emission reporting obligations Fuel/energy taxes and regulations In the U.S., there is uncertainty over new air pollution regulation, primarily as it relates to EPA GHG permitting regulations and policies. In the U.S., at the federal and state level, Oxy is required to identify certain GHG emissions in greater detail than previously required. The U.S. EPA regulates methane as a GHG under the new source performance standards ( Subpart OOOO ). In the U.S., Oxy could be subject to federal legislation that could impact fuel/energy prices or the demand for these products or impose additional energy taxes. Increased operational cost Increased operational cost Increased operational cost Increased operational cost 3 to 6 years Up to 1 year 1 to 3 years >6 years Direct Likely Unknown Direct Direct Indirect (Supply chain) Virtually certain More likely than not Unknown Unknown Unknown Unknown Unknown until regulation has been defined and applied to applicable Oxy owned assets. Establishment of a global or federal carbon pricing mechanism and pricing on CO2 could stimulate Carbon Capture and Storage project Oxy s HESMS integrates compliance into our risk and operations management structure. Oxy s HESMS integrates compliance into our risk and operations management structure. Oxy s HESMS integrates compliance into our risk and operations management structure. Oxy s longstanding policy is to seek continuous improvement in resource recovery, pollution prevention and energy efficiency. Oxy has ongoing efforts Compliance and management costs are integrated into our operating cost structure. Compliance and management costs are integrated into our operating cost structure. Compliance and management costs are integrated into our operating cost structure. Business development, compliance and management costs are integrated into our operating cost structure. 22

Risk driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Uncertainty surrounding new regulation Also, there is potential indirect exposure over the next 5 years to higher electricity prices through suppliers. Generally, efforts by various U.S. and foreign jurisdictions to propose or adopt legislation, regulations or policies, some of which have been adopted, seek to control or reduce emissions of greenhouse gases or consumption of fossil fuels. Although the effect of these efforts on Oxy is uncertain, Oxy faces risks of delays in new or expanded development Increased operational cost >6 years Direct Unknown Unknown development. This would have implications both in terms of increased demand for our products but also potential new revenues from CO2 storage. Establishment of a global or federal carbon pricing mechanism and pricing on CO2 could stimulate Carbon Capture and Storage project development. This would have implications both in terms of increased demand for our products but also potential new revenues from CO2 storage. focused on identifying costeffective and environmentally sound solutions that yield continuous improvement in the management of GHG, including the opportunity of expanding the use of CCS/CCUS technologies. Oxy s longstanding policy is to seek continuous improvement in resource recovery, pollution prevention and energy efficiency. Oxy has ongoing efforts focused on identifying costeffective and environmentally sound solutions that yield continuous improvement in the management of GHG and other air emissions associated with our oil and gas and chemical Business development, compliance and management costs are integrated into our operating cost structure. 23

Risk driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management projects, increases in taxes, increases in costs to produce and reductions in the demand for, and restrictions on the use of, its products. production businesses. CC5.1b Please describe your inherent risks that are driven by changes in physical climate parameters Risk driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Tropical cyclones (hurricanes and typhoons) Oxy has several facilities located near the Gulf Coast (Texas and Louisiana) that have been in the path of hurricanes, which have at times resulted in the interruption of some operations. Significant changes Reduction/disruption in production capacity Unknown Direct Very unlikely Low Low Third party and self-insurance with respect to losses. Low 24

Risk driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Change in precipitation extremes and droughts Change in precipitation extremes in weather or climate could, unless the impacts of such changes were mitigated, affect access to or operation of these or other Oxy facilities. However, Oxy is not aware of credible projections that natural disasters, whether or not driven by changes in climate could result in immitigable impacts are probable within the anticipated operating life of its facilities. The occurrence of events, such as floods or droughts, could cause operations to cease or be curtailed, and may negatively affect Oxy s businesses and the communities in which it operates. The occurrence of prolonged drought could cause Oxy s on-site power Reduction/disruption in production capacity Reduction/disruption in production capacity Unknown Direct Unknown Low Low Unknown Direct Unknown Low Low Oxy s HESMS integrates water issues into our risk and operations management structure. Also, third party and self-insurance with respect to losses. Oxy s HESMS integrates water issues into our risk and Low Low 25

Risk driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management and droughts generation to cease or be curtailed, and may negatively affect grid-supplied power. operations management structure. Also, third party and self-insurance with respect to losses. CC5.1c Please describe your inherent risks that are driven by changes in other climate-related developments Risk driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Uncertainty in market signals Considering the uncertain outcome and timing of both actual and proposed international, national and state climate related measures, it is difficult to predict their specific business or market-based effects. The likelihood that international, national and state level governments take different, or even contradictory, legal, regulatory and marketbased approaches risks creating a patchwork of Increased operational cost >6 years Direct More likely than not Low Difficult to predict Oxy s HESMS integrates market uncertainty into our risk and operations management structure. Compliance and management costs are integrated into our operating cost structure. 26

Risk driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management incompatible and incoherent market signals. CC5.1d Please explain why you do not consider your company to be exposed to inherent risks driven by changes in regulation that have the potential to generate a substantive change in your business operations, revenue or expenditure CC5.1e Please explain why you do not consider your company to be exposed to inherent risks driven by changes in physical climate parameters that have the potential to generate a substantive change in your business operations, revenue or expenditure CC5.1f Please explain why you do not consider your company to be exposed to inherent risks driven by changes in other climate-related developments that have the potential to generate a substantive change in your business operations, revenue or expenditure 27

Further Information Page: CC6. Climate Change Opportunities CC6.1 Have you identified any inherent climate change opportunities that have the potential to generate a substantive change in your business operations, revenue or expenditure? Tick all that apply Opportunities driven by changes in regulation Opportunities driven by changes in other climate-related developments CC6.1a Please describe your inherent opportunities that are driven by changes in regulation Opportunity driver Description Potential impact Timeframe Direct/Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Air pollution limits Carbon taxes Oxy's natural gas reserves could become more valuable if future changes in energy demand include a shift to natural gas. Because of Oxy s expertise in enhanced oil recovery (EOR) techniques, Increased demand for existing products/services Increased demand for existing products/services >6 years Direct Very likely Lowmedium Unknown Direct Unknown Unknown Difficult to predict Establishment of a carbon pricing mechanism and pricing on Match investment to increase production with growth in demand Match investment to increase production Oxy has management systems and existing natural gas infrastructure, thus costs are low to manage this potential opportunity. The incremental cost is low to manage this 28

Opportunity driver Description Potential impact Timeframe Direct/Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Air pollution limits particularly CO2 EOR, Oxy's oil reserves could become more productive from regulatory changes that drive the capture and sequestration of anthropogenic CO2 or burden greenfield oil developments. The expansion of enforcement of methane emissions from new sources to existing sources could accelerate the use of cuttingedge technologies and processes to control and capture methane emissions, therefore modestly increasing the marketable volume of Increased production capacity 1 to 3 years Direct More likely than not Low CO2 could also stimulate CCS/CCUS projects to market. This would have implications both in terms of increased demand for our products but also potential new revenues from CO2 storage. Difficult to predict with growth in demand Oxy has ongoing efforts to capture methane emissions and control leaks. potential opportunity Difficult to predict based on range of technical solutions available. 29

Opportunity driver Description Potential impact Timeframe Direct/Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management produced methane. CC6.1b Please describe your inherent opportunities that are driven by changes in physical climate parameters Opportunity driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management CC6.1c Please describe your inherent opportunities that are driven by changes in other climate-related developments Opportunity driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Fluctuating socioeconomic conditions Analyses of global energy demand by the International Energy Agency, OECD, and World Economic Forum, and energy industry groups Increased demand for existing products/services 3 to 6 years Direct Very likely Medium Difficult to predict Oxy s management approach at both company and asset levels will factor these trends and pricing Management costs are integrated into our operating cost structure. 30

Opportunity driver Description Potential impact Timeframe Direct/ Indirect Likelihood Magnitude of impact Estimated financial implications Management method Cost of management Reputation consistently forecast growth in demand for all forms of energy over the next 15-25 years, particularly in faster-growing Asian economies. Growth in GDP, population and per capita living standards are expected to create the commensurate increase in demand for fossil fuels, as well as renewable and alternative energy sources. As a leader in EOR and CO2 EOR, Oxy extends oil and gas production from long-lived assets. We believe that using CO2 EOR technologies and existing infrastructure to recover additional oil and gas from mature oil fields while Wider social benefits Up to 1 year Direct Unknown Low Oxy plans to invest $195 million in 2017 for additional and expanded CO2 in the Permian Basin. Establishment of a global or federal carbon pricing mechanism and on CO2 could stimulate CCS project signals as part of operations and capital allocation decisions. Oxy has a unique competitive advantage in CO2 EOR its ability to share knowledge between our operations to optimize production, and to leverage our significant midstream infrastructure Management costs are integrated into our operating cost structure. 31