Central Seattle 12” High Pressure Gas Main, Seattle, WA; Puget Sound Energy
White Shield assisted PSE in the preliminary phase of a project located in the Central District in Seattle. The project consisted of installing approximately 7,200 linear feet of 12” steel wrapped high-pressure gas main. The route traversed through residential neighborhoods beginning at 18th Avenue and South Weller Street and ended at 26th Avenue South and Marion Street. White Shield noted all monuments and benchmarks, edges of pavement and type of pavement surfacing, driveways, sidewalks, curbs and gutters, drainage structures, culverts and ditches. Above and below ground utilities were located throughout the route including light poles, utility poles, traffic signals and loops, visible indications of property lines, and traffic circles. All mapping was performed on the Washington State Plane Coordinate System (NAD83/91).