The Upas Street Pipeline, Park Boulevard Pipeline and 5th Avenue Pipeline are more than 70 years old and are reaching the end of their useful lifecycle. They are badly deteriorated and have a recent history of leakage and pipe breaks. The Upas Street pipeline also crosses vast open space areas that are difficult or impossible to access for routine maintenance and repairs, and has numerous direct service connections that must be relocated to a new, smaller distribution pipeline for consistency with current codes and design standards. The project will improve water delivery system reliability; increase operational flexibility; reduce overall maintenance needs and costs; and substantially reduce the potential for failure, major pipeline repairs and service shut-downs.
The City of San Diego will be mitigating on-site for impacts to sensitive vegetation communities for the Upas Street Pipeline Replacement Project. In order to determine significant threshold, PanGIS mapped each vegetation community, riverine features, impact area, work limits, location of fencing during construction, and oaks based on maps and GPS coordinates from survey notes provided by the project biologist. The purpose of the vegetation mapping was to assist the City of San Diego with CEQA compliance.
The final product to the client included the detailed vegetation map, square feet and acres of each vegetation community for the biological survey area and the impact area plus, the location of three oaks slated for removal. All work was completed with ESRI’s ArcMap software.