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Pacific Gas and 4 � E/acMic Company wide trench being dug along a 36 inch pipeline, the centerline of the trench would Head to ba at least 54 inches [24/2 + 24 + 36/2 = 54] away, or be entirely dug by hand.) Water jetting to assist vacuum excavating must be limited to 7000 psig and directed ata 40` angle to the pipe. All pile driving must be kept a minimum of 3 feet away. Any plans to expose and support a PG&E gas transmission pipeline across an open excavation need to be approved by PGBE Pipeline Services in writing PRIOR to performing the work. 6. Boring/Trenchless Installations: PGBE Pipeline Services must review and approve all plans to bora across or parallel to (within 70 feet) a gas transmission pipeline. There are stringent criteria to pothole the gas transmission facility at regular intervals for all parall¢I bore installations. For bore paths that cross gas transmission pipelines perpendicularly,the pipeline must ba potholed a minimum of 2 feet in the horizontal direction of the bora path and a minimum of 72 inches in the vertical direction from the bottom of the pipe with minimum clearances measuretl from the etlga of the pipe in both directions. Standby personnel must watch the locator trace (and every ream pass)the path of the bora as it approaches the pipeline and visually monitor the pothole (with the exposed transmission pipe) as the bora traverses the pipeline to ensure adequate clearance with the pipeline.Tha pothole width must account for the Inaccuracy of the locating equipment. �. Substructures: All utility crossings of a gas pipeline should ba matle as close to perpendicular as feasible (g0" +/- 75"). All utility lines crossing the gas pipeline must have a minimum of 72 inches of separation from the gas pipeline. Parallel utilities, pole bases, water line 'kicker blocks', storm drain inlets, water meters, valvas, back pressure devices or other utility substructures are not allowed in the PGBE gas pipeline easement. If previously ratiratl PG&E facilities are in conflict with proposed substructures, PGBE must verify they are safe prior to removal. This includes verification tasting of the contents of the facilities, as well as environmental testing of the coating and internal surto ces. Timelines for PGBE completion of this verification will vary depending on the type and location of facilities in conflict. 8. Structures: No structures are to be built within the PG&E gas pipeline easement. This includes buildings, retaining walls, fences, decks, patios, carports, septic tanks, storage sheds, tanks, loatling ramps, or any structure that could limit PGB.E's ability to access its facilities. 9. Fencing: Permanent fencing is not allowed within PG6E easements except for perpendicular crossings which must include a 76 foot witla gate for vehicular access. Gates will be secured with PG&E corporation locks. 70. Landscaping: Landscaping must ba designed to allow PGBE to access the pipeline for maintenance and not intertere with pipeline coatings or other cathodic protection systems. No trees, shrubs, brush, vines, and other vegetation may be planted within the easement area. Only those plants, ground covers, grasses, flowers, and low-growing plants that grow unsupported to a maximum of four feet(4') in height at maturity may be planted within the easement area. PGSeE Gas and Electric Facilities Page 3