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PSDS GENERATED******* <br /> D38100 Facilities Mechanical Standards D38106-501 <br /> COLOR FIELD LEGEN. . . . . . . . . . . . . . D <br /> -'"'NATU RAL GAS <br /> DIRECTIONAL ARROWS 1l1l1l <br /> ..111:. <br /> G501001 <br /> FIGURE 1 —TYPICAL PIPE LABELS <br /> 501.6 UNDERGROUND PIPE IDENTIFICATION <br /> All underground piping, except office area and irrigation sprinkler piping, shall be <br /> identified by the use of surface located markers. Markers shall be located at maximum <br /> intervals of 150 feet,at all changes of direction,within 5 feet of a wall, at all manholes <br /> and valve boxes, and adjacent to roads. Markers should indicate service, pipe size, <br /> direction of flow, pipe material and pipe depth. Marker locations shall be indicated on <br /> piping drawings. Refer to FIGURE 2 for a sample marker. <br /> Underground pipe identification markers shall be provided and installed by the installer of <br /> underground piping. Any disturbed markers shall be replaced. <br /> REV D 13—MAY-1999 BOE/A/C Page 501-8 <br />