Friday, August 31, 2012

Harry Tracy Construction Update

·         We extend our apologies for any disruption caused by the unplanned evening work performed on Thursday night, August 30. A safety concern with a pipe required a crew to continue operating equipment to resolve the issue until shortly before 10 p.m.  

·         The final phase of pile driving for the new 11 million gallon treated water reservoir began in early August and is expected to continue until late September or early October.  Please subscribe to this site (see right) for updates on our progress. The new reservoir will allow us to provide up to 140 million gallons of water per day, for 60 days, within 24 hours of a major earthquake. Due to the proximity of the San Andreas Fault, the piles are necessary to anchor the foundation into bedrock. Pile driving hours are approximately 7 a.m. to 5 p.m., weekdays only.

     




      Noise monitoring (equipment shown left) was performed daily during August pile driving. Supplemental noise and vibration monitoring will continue to ensure levels comply with local laws.









·         Concrete pours for the new tunnels that feed the reservoir will resume on Wednesday, September 5. The concrete pours will be spaced every few days, allowing one area to dry before beginning another. Trucks will operate between 7:00 a.m. and 6 p.m., with the majority of the truck traffic expected early in the day. All trucks go through the wheel washer before leaving the plant to prevent tracking dirt onto Crystal Springs Road. Pilot cars will continue to escort trucks along the road to restrict speed and ensure safety.

New Treated Water Reservoir under construction as of August 22, 2012. Piles (metal beams pictured) are driven up to 40 feet into the ground to ensure seismic reliability of the new foundation.



Friday, August 3, 2012

Final Phase of Pile Driving at Harry Tracy

Pile driving at the Harry Tracy Water Treatment Plant (located off Highway 280 near San Bruno and Millbrae) is expected to begin on August 7th and continue for approximately 6 to 8 weeks. This will be the final phase of pile driving for the new 11 million gallon treated water reservoir.  The new reservoir will allow us to provide up to 140 million gallons of water per day, for 60 days, within 24 hours of a major earthquake.

The Harry Tracy plant is also expanding water filtration capacity as part of the ongoing construction. Beginning next week and continuing for 3 weeks, trucks will off-haul excavated soil from the site of the new filters. All trucks go through the wheel washer before leaving the plant to prevent tracking dirt onto Crystal Springs Road, and truckloads are securely covered. In addition, soil is tested before the off-haul to ensure there are no contaminants present. Truck hauling will operate between 7:30 a.m. and 4 p.m. Pilot cars will continue to escort trucks along the road to restrict speed and ensure safety.

Please call us with any questions or concerns about the upgrades and seismic improvements underway at the plant at (866) 973-1476.


·         Sawyer Camp Trail will be closed for construction on Monday and Tuesday, August 6th and 7th. For more information about trail access and construction in the Peninsula Watershed, please visit www.sfwater.org/SCT.

·         For information about the 5-Day Road Closure of Crystal Springs Road near Sawyer Camp Trail in Hillsborough, including a detour map, please visit www.sfwater.org/SCT.