This site contains a single building up the hill from some air purifiers owned by Hornwright Industrial. The building contains a locked (Picklock 1) explosives crate, a combat shotgun and assorted junk. There is a parking lot outside the building which still contains some cars.
- Note for Raymond - Note, located to the north, near the intersection at Janelle Priblo's camp. Obtainable during Unsolved: Death and Taxidermy.
- Janelle's revenge - Holotape, located to the north, near the intersection. Near Janelle's skeleton.
- Raymond's pep talk - Holotape, located to the north, near the intersection. Inside Raymond's truck.
- Directions to Janelle's camp - Note, located to the north near the intersection. Inside Raymond's truck.
Hornwright air purifier site #04 appears only in Fallout 76.