© Chevron 2005 Chevron Piceance Basin Natural Gas Development Program Northwest Colorado Oil & Gas Forum Presented by: Michael DeBerry June 5, 2008

© Chevron 2005 Chevron Mid-Continent Business Unit 2 Chevrons Commitment to Environmental Stewardship Assistance to state agencies as a landowner in responding to Garden Gulch Engagement with Mineral Lessees as the Landowner Stormwater Management Programs Carbon Footprint Assessment, Alternative Energy Opportunities and Resource Conservation Surface Use Location Selection Process for Fee Acreage

© Chevron 2005 Chevron Mid-Continent Business Unit 3 Assistance to State Agencies Recent Garden Gulch Activity Worked closely with all regulatory agencies to provide information and access to property No regulatory obligation as landowner Provided CDOW access to conduct water and fish studies and samplings Provided on site access for EPA, CDPHE, CDOW, Garfield County and the Colorado Water Quality Control Commissioners – irrespective of statutory right of access

© Chevron 2005 Chevron Mid-Continent Business Unit 4 Stormwater Management Best Management Practices (BMPs) Controls Workforce training and awareness raising Utilization of stormwater program service providers for construction and inspection Preventing erosion and/or sedimentation with best management practices applications Silt Fence Retention Basins Check Dams Seeding and Mulching Grading/Roughening Techniques Road and driveway surfacing Spill Prevention Control and Countermeasure plans for reducing spills and/or consequences

© Chevron 2005 Chevron Mid-Continent Business Unit 5 Stormwater Management BMPs cont. Emergency Response Plans Methods of handling/disposing of contaminated soils Post Construction Controls Interim period between construction completion and final stabilization of the area Must be inspected once a month

© Chevron 2005 Chevron Mid-Continent Business Unit 6 Surface Use Location Selection Process The purpose of the process is to make quality land use decisions for the Piceance Development Program. Quality means balancing the environmental and surface use aspects with asset development. Similar processes are employed with mineral lessees on Chevron lands and where Chevron operates on others lands. Initial location selection Geologist recommends the pad location & description Area review On-site review and report with aerial photo of any findings Road access Grazing and/or irrigation impacts Pad orientation Drilling and Geology Review Will pad location and orientation work

© Chevron 2005 Chevron Mid-Continent Business Unit 7 Surface Use Location Selection Process cont. Formal Review of Site Record issues and mitigation recommendations Disturbed area Access road(s) Visual/noise impacts Grading Rig layout and well slot coordinates Pit liners Production facilities Wildlife habitat and migration T&E species considerations

© Chevron 2005 Chevron Mid-Continent Business Unit 8 Surface Use Location Selection Process cont. Mitigation Plan/Stakeholder Meeting Determine if process can proceed or if recycle is necessary Land Survey Disturbed area to be identified Detail Pad Design APD/SUP Preparation Construction and Operations Review for Final Pad Design