Overview
CAMBRIA GOLD MINES SAND AND GRAVEL QUARRY ALASKA is an operational stormwater outfall in Hyder, Alaska, United States. It manages stormwater discharge from a sand and gravel quarry operation.
CAMBRIA GOLD MINES SAND AND GRAVEL QUARRY ALASKA is a stormwater outfall facility located in Hyder, Alaska, within Prince of Wales-Outer Ketchikan Census Area. This facility is part of the stormwater management infrastructure for a sand and gravel quarry operation, ensuring that runoff from the site is properly managed before discharge. As a stormwater outfall, it plays a key role in controlling the quality and quantity of stormwater released into the local environment. In the United States, stormwater discharges from industrial activities such as mining and quarrying are regulated under the National Pollutant Discharge Elimination System (NPDES) program, administered by the EPA. Facilities like this one are typically required to obtain permit coverage under the Multi-Sector General Permit (MSGP) for industrial stormwater discharges. The permit outlines monitoring requirements, best management practices (BMPs), and effluent limits to minimize pollution from stormwater runoff. The facility's location in a remote area of Alaska near the Canadian border presents unique environmental considerations. Stormwater from quarry operations can carry sediment and other pollutants that may impact nearby water bodies. Proper management of stormwater outfalls is critical to protect water quality in the region's sensitive aquatic ecosystems. The facility's operational status indicates it is actively contributing to stormwater management in the area.
Environmental context
The facility is located in a remote, mountainous region of Southeast Alaska, characterized by high precipitation and sensitive aquatic habitats. Stormwater runoff from quarry operations can carry sediment, metals, and other pollutants that may affect local streams and rivers. The area's steep terrain and heavy rainfall increase the risk of erosion and sediment transport, making effective stormwater management essential to protect water quality and aquatic life.
Frequently asked questions
The facility is located in Hyder, Alaska, United States, within Prince of Wales-Outer Ketchikan Census Area.
It manages stormwater discharge from a sand and gravel quarry operation, controlling runoff quality and quantity before release into the environment.
Industrial stormwater discharges in the U.S. are regulated under the Clean Water Act via NPDES permits, typically the Multi-Sector General Permit (MSGP) for mining operations.
Common pollutants include sediment, suspended solids, metals (e.g., copper, zinc), and pH changes from exposed rock and equipment.
Best management practices like sediment basins, erosion controls, and regular monitoring help reduce pollutant loads, protecting aquatic habitats and downstream water quality.
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