Monday, September 19, 2022
An aerial black fly suppression operation is scheduled for Monday, September 19th on the Main Stem of the Susquehanna River, Conewago Creek, Swatara Creek, Conodoguinet Creek, and Sherman Creek. This operation will have two phases, the first will begin in Adams County at 0700am and work towards Perry County. This aerial application will include flights in Adams, Cumberland, Dauphin, Perry and York Counties. During this phase only the creeks listed above will be treated. The helicopter will be a Bell 206 with the tail number N651HA and is painted black with silver and red stripes. The second phase will start in Northumberland County at approximately 1200pm and work south toward York County. This operation will include flights in Cumberland, Dauphin, Juniata, Lancaster, Mifflin, Northumberland, Perry, Snyder, and York Counties. During this phase the Main Stem of the Susquehanna River will be treated. The helicopter will be a Bell 205 with the tail number N638HA and is painted blue with silver stripes.
Helicopter Applicators Inc. will be dispersing Vectobac 12AS, which is a Bti product manufactured by Valent Biosciences. Bti is short for Bacillus thuringiensis var. israelensis, which is a bacterial larvicide, not a chemical, and is the only product used in Pennsylvania's waterways for black fly suppression. Vectobac 12AS is a thick brown liquid resembling chocolate milk. The helicopter will fly low near tree top level and release the Vectobac at various predetermined positions on each stream. Attached is a copy of the Vectobac label and an SDS sheet in case you would need information on the product.