Natural Gas Transmission Pipelines

1. Natural Gas Transmission Pipelines Brisbane City Council Meeting June 6, 2011

2. Natural Gas Transmission Pipelines • PG&E provides 4.3 million customer accounts with natural gas service • PG&E’s top priority is safety • Comprehensive pipeline inspection and monitoring programs • Monitor pipelines on a 24-hour basis • Conduct regular pipeline assessments • Any issues identified as a threat to public safety are immediately addressed

3. Enhancing the Safety of the System • Reduction in Gas Pressure • Accelerated Leak Survey • Routine Pipeline Patrols • Cathodic Protection Surveys • Integrity Assessments

4. Natural Gas Transmission Pipelines

5. Natural Gas Transmission Pipelines • PG&E uses data it collects during routine surveys to help plan and prioritize future work • Evaluation takes into consideration the following criteria: • Potential for third party damage • Potential for corrosion • Potential for ground movement • Physical design and characteristics

6. Natural Gas Transmission Pipelines • PG&E determines which segments warrant further evaluation, monitoring or future action • Top 100 list • Document used to inform future work plans • As conditions change and work is completed year to year, PG&E reevaluates the segments included on the list • No Brisbane segments appear on the Top 100 list • Pipelines in Brisbane • Line 101 runs along Bayshore Boulevard • Line 132 runs through San Bruno Mountain State Park, crosses West Hill Place and north to Guadalupe Canyon Parkway

7. 7 Lines 101 and 132

8. Natural Gas Transmission Pipelines • Pipeline 2020 Program • Modernize Critical Pipeline Infrastructure • Expand the Use of Automatic and Remotely Operated Shut-Off Valves • Spur Development of Next-Generation Inspection Technologies • Develop Industry-Leading Best Practices • Enhance Public Safety Partnerships

9. What is hydrostatic testing? • PG&E will be performing a hydrostatic pressure test on a segment of natural gas pipeline. • This involves pressurizing a section of pipe with water to a much higher level than the pipe will ever operate at with natural gas. • This verifies the capability of a pipeline to safely operate and can also reveal weaknesses that could lead to defects and leaks.

10. Customer outreach efforts: PG&E has a comprehensive plan for customer and community outreach regarding our tests and field work: • Letters sent to all residents and businesses near the area where testing will take place, with the following information: • Project fact sheets will be included with the letters that will describe the work, what customers can expect, and when the work will be completed • Open Houses where customers can have their questions answered by PG&E representatives and subject matter experts • Door hangers placed on residences nearest to construction activity to remind them of work just prior to it taking place • Recorded reminder messages delivered by telephone • Post-test letter informing residents and businesses of the test results

11. 11 Work area:

12. Where to go for more information: • Customer Care gas specialist representatives are available to answer questions about natural gas pipelines or the work being done in the area at 1-888-743-7431, between 7 a.m. and 6 p.m., Monday through Friday. • Online information about the project, PG&E’s Natural Gas Transmission System and our Pipeline Safety Programs at: www.pge.com/gassystem.

13. Resources • Website: www.pge.com • Pipeline Information Line: 1-888-743-7431 • Customer Call Center: 1-800-743-5000 • Contractors “Call Before You Dig”: 811