Monday, December 23, 2013

Happy Holidays from the Hetch Hetchy Water System

Warmest wishes of the season from our family to yours!

11 million gallon Treated Water Reservoir, December 2012

Harry Tracy Water Treatment Plant work crews will observe holidays on Christmas Day and New Year’s Day. Only light construction will be performed the week of December 23rd.

11 million gallon Treated Water Reservoir, December 2013

Thursday, December 12, 2013

The Crane’s Eye View

By mid-December, the Harry Tracy Water Treatment project will conclude two months of intensive work on new pipeline segments and upgrades to the treatment plant.  During this period regular operations have been suspended.  The project is over 65% complete, thanks in part to the swing shift started earlier this year to complete the new treated water reservoir. When the Plant comes back online later this month, the swing shift is expected to conclude. Extended hours and swing shifts may again be required in the future to stay on schedule or due to the demands of the work.

Photos by Robin Scheswohl, SFPUC

Work will continue throughout the Plant from 7 a.m. to 5 p.m. including most Saturdays from 9 a.m. to 5 p.m.
Steel-reinforced concrete columns are currently being constructed inside the new 11 million gallon treated water reservoir (photo above). The yellow metal forms are reused after each column has hardened. The columns will soon support a reinforced concrete roof. Waterproofing and water quality testing will follow before placing the new reservoir into service. 
Meanwhile construction of the reservoir walls is almost finished. The inner wall is more than 75% formed, and the outer wall is now complete except for a temporary opening for equipment and materials.

These new below-grade filters will increase our reliability 
to process raw water into drinking water.

What to Expect

  • Building materials are delivered via Crystal Springs Road in San Bruno. Flaggers control truck traffic at the Plant gate and pilot cars escort trucks along the road for safety.
  • Truck off-hauls occasionally begin at 7:00 a.m.
  • Noise levels are monitored to maintain compliance with local ordinances.

The contractor is working to minimize disruption to our neighbors. Please don’t hesitate to call our 24-hour phone line at (866) 973-1476, or email with questions or suggestions.

Thursday, December 5, 2013

Warm Winter Wishes

Happy Holidays!

As we look back over 2013 we’d like to say “Thank You” to our neighbors for your cooperation in our work to upgrade the aging Hetch Hetchy Water System. We send you wishes for warmth, happiness and delicious clean water this holiday season and beyond.

Hetch Hetchy Reservoir

All our best,
The Water System Improvement Program, Peninsula region

Tuesday, December 3, 2013

Helen Drive Work Update

Work will be concluding on schedule in mid-December for the seismic upgrade of the water pipeline located underground behind Meadows School in Millbrae. The project included excavation, welding and concrete placement for “sliplining”, placing a new steel pipe inside the existing pipe. The contractor is now preparing the pipeline to be put into service.

Sliplining old 60" pipe with new 48" pipe, using a crane and casters

Work hours: 7:00am - 7:00pm   Expected completion date: Dec. 15th, 2013
The Contractor has successfully completed leak testing the pipeline with the new 48” slipline. The grouting between the new liner and the existing pipe was completed the week of Thanksgiving.  
Neighbors may notice the discharge of large volumes of water down storm drains on Helen Drive. Unfortunately the water can’t be delivered to the public nor reused for other testing after it leaves the pipe, due to water quality regulations. This “dewatering” will be monitored so flooding will not occur.  In addition, construction traffic will continue on Helen Dr.  Pilot cars will escort trucks for safety and flaggers will be stationed on Helen Dr. as needed.
We appreciate your cooperation and support as we work to improve your regional drinking water system.  We invite you to call our 24-hour phone line at (866) 973-1476 or email us at with questions or concerns.
Project Description
Our contractor, Kiewit Infrastructure West Co., is working in multiple areas within the Harry Tracy Plant, part of the Hetch Hetchy Water System Improvement Program. Seismic retrofits and electrical upgrades will allow us to reliably provide up to 140 million gallons of water per day, for 60 days, within 24 hours of a major earthquake.