Environmental Review

San Diego Raw Water Siphon Replacement

Project Description:
The Tuolumne Utilities District owns and operates a 12" diameter welded steel and transite
(asbestos-concrete) pipeline which transports raw water below the San Diego Reservoir on the
Columbia College campus. The District intends to replace the old pipe with 12" PVC pipe. The
total length of new pipeline would be +/-1,030 lineal feet. The construction will involve trenching
approximately 4 feet deep, placing sand bedding in the bottom of the trench, laying the pipe,
and backfilling to the original grade. It is expected that no trees will need to be removed,
however, some branches will need to be trimmed, and some brush and berry vines will need to
be removed. The District plans to abandon the old pipe in its current location. Any transite pipe
that is intercepted by the new trench will be cut and removed and hauled to the TUD yard for
proper handling and disposal. Construction is expected to take approximately two weeks and is
anticipated to start towards the end of this summer.

Public Comment - July 5, 2011 to August 8, 2011

For complete details and contact information click here.