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• <br /> • <br /> I <br /> • <br /> • <br /> • <br /> Long Range Gas Transmission Pipeline Planning Input • • <br /> Top I.00 Segments <br /> PG &E has a comprehensive inspection and monitoring program to ensure the safety of its natural gas transmission pipeline system. <br /> PG &B monitors system status in real time on a 24 -hour basis, and regularly conducts leak inspections, surveys, and patrols of all of <br /> our natural gas pipelines. Any issues identified as a threat to public safety are immediately addressed. <br /> PG&E also uses the data it collects to help plan and prioritize future wotic. One of the tools PG&E uses is a risk management program • <br /> • <br /> that inventories each of the 20,000 segments within PG&E's natural gas transmission pipeline system and evaluates them against <br /> criteria such as: <br /> o the potential for third party damage like dig -ins from construction, • <br /> o the potential for corrosion, • <br /> o the potential for ground movement, and i <br /> o the physical design and characteristics of the pipe segment. • <br /> , j <br /> PG&E also considers the proximity to high density populations, potential reliability impacts and environmentally sensitive areas. <br /> Based on all of these factors, PG&E determines which segments warrant further evaluation, monitoring or other future action. PG&E <br /> • also creates a list of the "Top 100" segments to help inform future work plans. As conditions change from year to year, PG&E <br /> reevaluates the segments included on the list. <br /> : <br /> There are a range of actions PG&E may take for the segments identified on the list. For example, if a segment is on the list due to a • <br /> high level of construction activity in the area, PG &E might enhance the physical markings of the lines and conduct outreach to help I • <br /> avoid accidental dig -ins. In other cases, PG&E may increase its monitoring or propose to rebuild the line sometime in the future. <br /> • <br /> Below is PG&E's current list of segments for longer -term evaluation and planning. This list also is available on PG&E's we■site at. <br /> www.pge.com /pipelineplanning, along with maps to assist customers with specific questions about the location of PG&E's natural gas <br /> transmission lines. The segments have been grouped together for planning purposes. The current ranking for each segment is also <br /> provided. <br /> 1 j <br /> 9/20/2010 1. <br />