September-October 2008

From: Raincatcher's Delight

A Historic Location Modified for the Modern World

Article Tools

Create a Link to this Article
Comments

Construction of the Seaholm Power Plant in Austin began in 1950. Austin Electric operated the interactive, gas-fired, electrical power generation facility from 1951 until 1992. When fully functional, the plant’s five turbines produced up to 120,000 kW of electricity. The main (turbine-generator) building, which measures 110 feet by 235 feet, is a fine example of modern civic, or art deco, architecture. Its clerestory windows close to the 65-feet-high ceiling let in lots of light. With two floors below ground level, this building has more than 110,000 square feet of usable floor space.

When Seaholm was decommissioned, local citizens were determined to preserve its buildings. They began campaigning for Seaholm to be included on the National Register of Historic Places. In 1996 the Austin City Council voted to preserve the buildings and site for future public use. Council members knew that it would take some time to adapt such a specialized site. The city commissioned a master plan for the projects, which the ROMA Design Group completed in 2001. By 2005 the city had begun looking for partners in a major joint venture to redevelop the building and site and to create the project’s major features.

Photo: All photos by Austin History Center

The Seaholm Power Plant (1951–1992) was redeveloped in 2006, becoming the first facility to earn a TCSA "ready for reuse" determination.

In 2006 the city chose a consortium of Southwest Strategies Group and other development firms to develop the Seaholm site. These firms included engineering, design, power plant reuse, and hotel-condominium development. But before any part of this impressive project could begin, the former power plant had to be made safe for people to use. Doing so was no easy task, because the site was teeming with hazardous substances accumulated during years of use.

The three main contaminants present were asbestos, lead-based paint, and polychlorinated biphenyls. All of them are federally regulated under the Toxic Substances Control Act (TSCA). PCBs (polychlorinated biphenyls), the most hazardous, are commonly found in older power-generating facilities, because they were widely used on electrical equipment. Seaholm’s concrete floors were saturated with oil that contained PCBs.

The most common ways to eliminate the polluted areas of Seaholm were not feasible. Removing the contaminated concrete would have compromised the structural integrity of the main building. Covering the floors with another layer of concrete would have exceeded their load-bearing capacities. Tearing the plant down would have resulted in tons of hazardous material and cost the city millions of dollars. 

Austin Energy worked with experts on hazardous substances to develop a new method of encapsulating the contaminants with a fiber-reinforced epoxy coating. The new approach was so effective that the building was judged safe enough to qualify for unrestricted use.

In January 2006, the EPA and the Texas Commission on Environmental Quality (TCEQ) issued a joint press release to announce that Seaholm was the first facility in the nation to earn a TSCA “ready for reuse” determination. The TCEQ also gave Seaholm its annual award for innovative design project. The total cost of remediation was $13 million.

Besides a major civic activity center, Seaholm will have service to and from a light rail station. Direct access for the public to Town Lake (renamed Lady Bird Lake in July 2007, in honor of the late Lady Bird Johnson) is an important component of the development. Street and road improvements to connect the site with the downtown area were also needed.

What Do You Think?

Post a Comment

Be the first to tell us what you think!

Post a Comment

Not a subscriber? Sign Up
 
 
*