News Releases

Constellation to Temporarily Stop Fly Ash Placement at Gambrills Site

BALTIMORE, Sept. 14, 2007 - Constellation Energy (NYSE: CEG) today announced that it will temporarily cease placing fly ash at the BBSS sand and gravel mine in Anne Arundel County, beginning this weekend.

"This is consistent with the actions we've taken to date to protect public health since we first identified elevated levels of metals at the site last October," said John Long, president of Constellation Energy subsidiary, Constellation Power Generation, which oversees the company's fossil fuel power plants. "We will continue to engage in dialogue with the Maryland Department of the Environment and Anne Arundel County officials to ensure the appropriate level of care and protection for the community and the environment as we strive to reach the right technical solution."

Ash placement at the BBSS site is expected to be suspended before next Monday. Constellation Energy is currently in negotiations with the Maryland Department of the Environment to identify engineering upgrades that could be made at the site for fly ash containment. Once those controls are agreed to and installed, ash placement would resume. In the interim, the fly ash will be placed at an alternate site.

Fly ash is a by-product of the process of burning coal to produce electricity. Since 1995, Constellation Energy has been placing fly ash at the Gambrills site in partnership with BBSS, (Reliable) Inc., which owns the mining pit. BBSS has agreed to temporarily discontinue the placement of ash. "We're working closely with Constellation Energy on this and we agree that it's the right thing to do right now," said Rob Scrivener, vice president of BBSS.

Since last October, Constellation Energy has been working to address the fly ash-related issues with the Maryland Department of the Environment, the Anne Arundel County Council, and local residents. Constellation Energy also has taken a number of steps to address community concerns, including providing bottled water to residents living on Summerfield Road in Crofton where residential wells last October showed higher-than-normal metals readings. Constellation Energy this week also agreed to provide and pay for county water for existing residents living on Summerfield Road.

Constellation Energy (www.constellation.com), a FORTUNE 200 company with 2006 revenues of $19.3 billion, is the nation's largest competitive supplier of electricity to large commercial and industrial customers and the nation's largest wholesale power seller. Constellation Energy also manages fuels and energy services on behalf of energy intensive industries and utilities. It owns a diversified fleet of 78 generating units located throughout the United States, totaling approximately 8,700 megawatts of generating capacity. The company delivers electricity and natural gas through the Baltimore Gas and Electric Company (BGE), its regulated utility in Central Maryland.

Contact: Rob Gould
410 470-7433