Voice of the Mid-Columbia
Kennewick, Pasco and Richland, Washington


Destruction of deadly munitions begins

Published Friday, September 29th, 2006

By Jeannine Koranda, Herald Oregon bureau

HERMISTON -- The Umatilla Chemical Depot incinerator started destroying the last of its GB sarin cache Thursday.

Crews started processing 8-inch artillery projectiles at about 8:15 a.m., depot spokesman Bruce Henrickson said. The day crew processed 10 projectiles on one of two lines and began processing another 10 on the second line.

"It's going well in the very early stages," he said.

The processing rate will increase over time, Henrickson said.

"We want to be sure everything is working properly and safely," said Doug Hamrick, project general manager for Washington Group International. The company is contracted to run the plant.

Each of the almost 3-foot-long munitions weighs about 203 pounds and holds about 14 1/2 pounds of sarin nerve agent. The agent attacks the central nervous system and can cause seizures, paralysis and even deaths in the most extreme cases.

The start of projectile processing had been on hold since Tuesday due to a glitch in the emergency sirens surrounding the Umatilla Chemical Depot. Workers found a problem with the signal that activates the siren alert system.

Chris Brown, Oregon Chemical Stockpile Emergency Preparedness Program manager, had asked depot officials to delay burning the new munition type.

Crews rerouted the activation signal to the same microwave system that runs Umatilla and Morrow counties' 450 megahertz tactical radio system.

Brown said crews got the automatic activation system working Thursday morning through the Pendleton and Hermiston Emergency Operations Centers. He felt it was safe to start burning the weapons with two centers online. Crews will continue working to reconnect the operation centers in Heppner and at the depot.

The incinerator destroyed the last of 91,442 M55 rockets filled with GB sarin in August. Since then, crews have been modifying the facility to destroy the depot's cache of 61,652 projectiles.

"The changeover team did a good job, and preparations for projectile disposal went well," said Don Barclay, depot site project manager.

Depot officials expect to be processing the 8-inch projectiles until December or January, and after some modifications to the plant, switch over to 155 mm projectiles. By late spring 2007 the facility could start processing VX nerve agent.