BLACKTAIL MOUNTAIN ESTATE3S ROCK QUARRY Stormwater Outfall, Juneau, Alaska

BLACKTAIL MOUNTAIN ESTATE3S ROCK QUARRY is a stormwater outfall facility located in Juneau, Alaska, United States. It serves as a discharge point for stormwater runoff from a rock quarry operation, managing water quality and flow in accordance with local and federal regulations. As a stormwater outfall in Alaska, this facility operates under the U.S. EPA's National Pollutant Discharge Elimination System (NPDES) permitting framework. Stormwater discharges from industrial activities such as quarries are typically regulated under NPDES Multi-Sector General Permits, which require implementation of best management practices to control pollutants. The facility's location in Juneau, a coastal city in the temperate rainforest of Southeast Alaska, means it handles significant precipitation and runoff. The environmental significance of this outfall lies in its potential impact on local water bodies. Stormwater runoff from quarry operations can carry sediment, metals, and other pollutants. Proper management ensures compliance with the Clean Water Act and protects the aquatic ecosystems of the surrounding area, including salmon-bearing streams and the waters of the Inside Passage.

Juneau, Alaska, experiences a maritime climate with high annual precipitation, leading to substantial stormwater runoff. The area's steep terrain and proximity to sensitive aquatic habitats, including salmon streams and marine waters, make stormwater management critical. Quarry operations can contribute sediment and metals to runoff, necessitating effective erosion and sediment control measures to protect water quality.