. . . a Kennewick Washington based [organization] based in Southeastern Washington.
Not only did someone write that, an accountant and a lawyer probably looked it over before it went public, and no one thought to rephrase it
. . . an [organization] based in Kennewick, in Southeastern Washington.
How hard can it be?
(Compare.)
Maybe I ought to have a subcategory for turns of phrase that make me itch; what should I call it?
something in latin appended with “itis”?
Hm, scabies verbigenita (itch caused by words)?
Pruridolalia?