Dye Study 1

> Dye Study 1 was conducted on June 16, 1999 on the Lower Bull Run River.

| Jeff Leighton is about to release the Rhodamine WT dye into the Lower Bull Run River just below the headworks diversion pool (RM 6.5).
| Dye plume just above the Lamphrey dam below the headworks facility.
| Dye plume heading downstream of the Lamprey dam.

| The dye plume then arched across the Plunge Pool short circuiting the large volume of water (RM 6.2).
Dye plume reaches the USGS gage station (RM 4.9 )in the Lower Bull Run River. From left to right: Dave Evonuk, Rob Annear and Austin Fisher | USGS gage station booth.