06:48 AM PDT on Saturday, May 13, 2006

Compiled by kgw.com Staff

The following are questions and answers about the upcoming implosion of the Trojan Power Plant along the Columbia River in Rainier, Oregon:

When will the implosion take place?

The implosion is scheduled for 7 a.m. on Sunday, May 21, 2006 and is expected to last a mere 8-13 seconds. If there is a thunderstorm or dense fog, the implosion may be delayed.

Where can people watch the implosion?

The best place to watch the implosion will be on your computer, via live streaming video on kgw.com or on television, with live team coverage on KGW Northwest Newschannel 8.

Public viewing areas may be difficult to find, and traffic will be held up at several points before and during the time of the implosion. In addition, while dust is not expected to create problems, it is best not to be immediately downwind at the time of the implosion.

How will it be imploded?

A relatively small amount of dynamite placed in the lower half of the tower will be exploded, causing the tower to fall into itself. Debris will be contained almost entirely within the tower’s footprint. The demolition, from the first detonation of explosives to the settling of the tower, is expected to take about 8-13 seconds.

What will it feel and sound like?

Ground vibration will be imperceptible. Noise levels will be equal to or less than that of a summer thunderstorm or a typical fireworks display.

Will there be dust, and will it be hazardous to people or animals?

The cooling tower never contained any radioactive material. It is made of concrete and steel and does not include sheet rock, plaster and other materials which create the dust clouds typically seen on a televised implosion.

Debris will be contained almost entirely within the tower’s footprint. While dust will be created, it will quickly dissipate. Fine particles may travel downwind and if so, would appear as a fine layer of dust. While community impact is expected to be minimal, PGE will provide advance written notice to all property owners within a one-mile radius of the tower.

How will traffic and public safety be managed?

The Trojan property will be closed. A safety perimeter will be drawn in a ½ -mile radius from the tower; the public will be excluded from this zone. The adjacent air space, river and railway will be closed to traffic at the time of implosion. These closures will be coordinated and communicated by the government agencies with jurisdiction. Public safety officials in both Oregon and Washington will implement plans to control traffic during the implosion. This will include controlling traffic on US Highway 30 in Oregon and on Interstate 5 in Washington.

(PGE contributed to this information.)