Trees, Shrubs and Conifers: Cranberry Viburnum damage, 1 by Davers

Davers wrote:
Hi,HooiserGreen and thanks for the response! This bush is twenty years old and has done well as a habitat plant.About three weeks ago this started with wilting overnight.Neighbor does spray broadleaf as well as as power washing garage shop often.The bush sits close to fence and 12 feet beyond it is the garage. My thinking was chemicals but wanted see if anything else would cause this.The bush is 12 ft x 6 ft. Can I save it or is the damage done? Thanks,again.