Construction Notice
Barton Creek Lift Station Relief Tunnel, Sections 1 and 2
Wastewater Improvements Project
You?re Invited to: MEET THE CONTRACTOR
Tuesday, September 27, 2005 from 6:00 to 7:00 p.m.
Splash! Exhibit, Barton Springs Bath House
Sheffield Education Center in Zilker Park
(Adjacent to Barton Springs Pool)
Please RSVP to the ACWP Hotline at 684-3204
Refreshments will be served
Contractor: Dibco Construction
Onsite City Construction Inspector: Alexa Locklear ? 845-6581
Project Manager: Stan Evans ? 479-1636
http://www.cityofaustin.org/ca
As you may know, the Austin Water Utility (AWU) has initiated the Austin Clean Water Program to eliminate sanitary sewer overflows (SSOs) from the collection system. These overflows represent concerns for both community health and the environment. The U.S. Environmental Protection Agency has given the City of Austin an Administrative Order to achieve this goal by June 2009 or face fines of $27,500 per overflow per day.
Construction begins in September 2005 and should be complete by fall 2006.
Here are the project details:
BARTON CREEK LIFT STATION RELIEF TUNNEL, SECTIONS 1 AND 2
Residents have begun to see contractor activity in the Toomey Road area this month, including fencing, mobilization, trailers and the initial excavation of a shaft. The City of Austin selected Dibco Construction as the contractor for the $9.2 million project. The contractor has agreed to stay out of Zilker Park in September to avoid conflicts with the Austin City Limits Festival. In October, the contractor will set up the work area in Zilker, just north of Barton Springs Road. Construction will end in the fall of 2006.
This project will relieve the existing Barton Creek lift station, located underground in the parking lot near Barton Springs pool. The 30-year old lift station has been deteriorated by corrosion, heightening the possibility that sewage could spill out into the sensitive Barton Springs watershed.
The project will provide 33-inch diameter fiberglass pipe installed in two sections of tunnel. A shallow tunnel will be constructed in Zilker Park for about 1,700 feet, connecting to the existing Barton Creek Interceptor. The shallow tunnel will be joined by a drop shaft to a deeper tunnel that extends for 1600 feet under Barton Creek to the shaft site off Toomey Road. The main shaft at Toomey Road in the parking lot will be about 70 feet deep, and will have a temporary lift station built within the shaft to lift the wastewater to the adjacent South Austin Outfall. The temporary lift station will be underground, and is expected to be operated until mid 2010.
A future tunnel will be designed that will connect the Barton tunnel to an existing tunnel, such that all of the wastewater flow will be conveyed by gravity to the South Austin wastewater treatment facility. This future downtown tunnel will parallel Town Lake, and will relieve the Shoal Creek lift station, located near Seaholm, as well as provide wastewater capacity for continued downtown development.
Construction of the Barton Creek Lift Station Relief Tunnel project avoids impacts to activities and developments in Zilker Park and the areas along Toomey Road. It eliminates the need for a siphon or another lift station in Zilker Park.