1. Tax Systems Vision April 2011

2. page - 2 Tax Systems Vision Financial Systems Domestic Compliance Domestic Tax Provision Domestic Deferred Tax Foreign Tax Provision Fin48/FAS 5 E&P Pools Tax Planning Audit/Controversy Property Tax Sales & Use Tax Excise Tax VAT Transfer Pricing Fixed Assets SAP Hyperion DW CorpTax Access TIS DI SAP Hyperion DW CorpTax SAP Hyperion DW CorpTax BNA Talisman Vertex Continual Process Improvement – Aligned with Tax Strategy each year. CorpTax 201120122013

3. page - 3 Tax Systems Vision Financial Systems Domestic Compliance Domestic Tax Provision Domestic Deferred Tax Foreign Tax Provision Fin48/FAS 5 E&P Pools Tax Planning Audit/Controversy Property Tax Sales & Use Tax Excise Tax VAT SAP Hyperion DW FINANCIAL SYSTEMS CorpTax Access TIS DI SAP Hyperion DW CorpTax SAP Hyperion DW CorpTax BNA Talisman Vertex Continual Process Improvement – Aligned with Tax Strategy each year. CorpTax 201120122013

4. page - 4 Tax Systems Vision Financial Systems Domestic Compliance Domestic Tax Provision Domestic Deferred Tax Foreign Tax Provision Fin48/FAS 5 E&P Pools Tax Planning Audit/Controversy Property Tax Sales & Use Tax Excise Tax VAT SAP Hyperion DW FINANCIAL SYSTEMS CorpTax Access TIS DI SAP Hyperion DW CorpTax SAP Hyperion DW CorpTax Talisman Vertex Continual Process Improvement – Aligned with Tax Strategy each year. CorpTax 201120122013 Access

5. page - 5 Tax Systems Vision Tax Compliance: Dom, For & State Property Tax Sales & Use Tax Excise Tax VAT Transfer Pricing Tax Accounting: Domestic Provision Foreign Tax Provision Domestic Deferred Tax Fin48/FAS 5 E&P Pools Tax Planning Audit/Controversy CorpTax Access TIS DI Talisman Vertex 201120122013 Access CorpTax Talisman Vertex Access CorpTax Vertex Access CorpTax

6. page - 6 Tax Systems Vision Financial Systems Domestic Compliance Domestic Tax Provision Domestic Deferred Tax Foreign Tax Provision Fin48/FAS 5 E&P Pools Tax Planning Audit/Controversy Property Tax Sales & Use Tax Excise Tax VAT FINANCIAL SYSTEMS SAP Hyperion DW CorpTax Access TIS DI SAP Hyperion DW CorpTax SAP Hyperion DW CorpTax BNA Talisman Vertex Continual Process Improvement – Aligned with Tax Strategy each year. CorpTax 201120122013 Compliance: Federal International State Sales & Use Property Excise Transfer Pricing VATCompliance: Federal International State Sales & Use Property Excise Transfer Pricing VAT Tax Accounting Tax Accounting: Domestic Foreign State UTP/FIN48 E&P Tax Accounting Tax Accounting: Domestic Foreign State UTP/FIN48 E&P Tax Planning Audit/ControversyAudit/Controversy Tools Tools: Calendar Fixed Assets Workflow Ad-Hoc Reporting Tools Tools: Calendar Fixed Assets Workflow Ad-Hoc Reporting

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8. page - 8 Tax Systems Vision HFM SAP DW Talisma n TIS CorpTax Deferre d Databas e BNA DI Instant Interest HFM SAP DW Talisma n Tax System BNA Instant Interest HFM SAP DW Tax System BNA Instant Interest Audit/Controversy Sales & Use Tax Planning Excise Tax Property Tax Audit/Controversy Sales & Use Tax Planning Excise Tax Property Tax Audit/Controversy Sales & Use Tax Excise Tax 2011 20122013 Tax System VAT