Blue Stone #57 (3/4 Stone, 3/4 Wash)

Stone used for driveways, drainage and septic systems.

AASHTO Specification:

#57 Stone – smaller particles, typically between ⅜ and 1-inch in diameter. #57 stone is the most widely used aggregate in SWM construction, and is typically found in stone reservoirs, around underdrains, under permeable paving systems, and as a filter media over dry basin drawdown devices. See AASHTO Specification Chart.