The monthly test of area emergency sirens and reader boards went well, emergency officials said.

Tom Worden, with Oregon Emergency Management, said all 35 sirens in Umatilla and Morrow counties, as well as several highway reader boards, functioned adequately during Tuesday’s test.

Deanne Westover with Benton County Emergency Management in Washington state said the several sirens in the south end of the county worked well during the monthly test.

The tests, which occur on the last Tuesday of every month, are to prepare people for an accident at the Umatilla Chemical Depot. The depot, in northwestern Umatilla County, stores about 12 percent of the nation’s chemical weapons and is currently building a facility to destroy the weapons. Destruction of the weapons won’t begin any early than next May, officials say.

The monthly tests don’t involve the tone alert radios, which are being distributed to residences and businesses near the depot. Distribution in Oregon is in its fifth week and should last around six months.

Radio distribution began in Washington last fall, but mishaps have set that program back as officials have replaced faulty radios with other ones. Westover said nearly all of the 200 radios in the immediate area near the depot have been taken care of, and 100 more for other areas will be delivered soon.