Southern Loop Pipeline

The Southern Loop Pipeline is approximately 11 miles long, extending between the city of San Ramon and the community of Castro Valley. The primary function is to deliver water from the West of Hills areas to the San Ramon area.

The project consisted of 28,700 LF of 36″”, 19,800 LF of 30″”, and 8,100 LF of 42″” cement mortar lined and tape wrapped steel pipe including appurtenances and fittings. 2,200 LF of 60” cement mortar lined and coated steel pipe, including construction of an approximately 1,800 foot long tunnel with an approximate diameter of 9 feet. The project also included a rate control station and flow metering station with underground reinforced concrete vaults, one approximately 30’ by 30’ by 15’ deep, containing valves and control equipment, one approximately 12’ by 12’ by 12’ deep, which contained flow measuring equipment, electrical control and instrumentation interfaces, along with interconnected piping and appurtenances between all and the existing district piping.