Overview
CALDER MINE is a stormwater outfall located in Shakan, Alaska, United States. It operates under the US EPA NPDES MS4 regulatory framework.
CALDER MINE is a stormwater outfall located in Shakan, Alaska, within the Prince of Wales-Outer Ketchikan Census Area. This facility manages stormwater runoff from a mining-related industrial catchment, classified under NAICS code 212312 (Crushed and Broken Limestone Mining and Quarrying). As a stormwater outfall, it discharges collected runoff into local waterways, operating under the regulatory oversight of the US Clean Water Act and EPA's NPDES MS4 permit program. The facility is operational and serves an industrial catchment associated with mining activities. Stormwater outfalls in Alaska often face unique challenges due to the region's remote geography, cold climate, and sensitive aquatic ecosystems. The regulatory framework for this facility likely involves compliance with Alaska's water quality standards and EPA's Phase II MS4 requirements for small municipalities or industrial sites. This outfall plays a critical role in managing stormwater runoff from the CALDER MINE site, helping to control erosion, sedimentation, and potential pollutant discharges into nearby water bodies. Proper stormwater management is essential to protect the region's pristine aquatic habitats, which support salmon and other cold-water species. The facility's location in a remote area underscores the importance of effective stormwater infrastructure for environmental protection.
Environmental context
The facility is located in the Tongass National Forest region of Southeast Alaska, a temperate rainforest ecosystem with high annual precipitation. Stormwater runoff from mining operations can carry sediment, heavy metals, and other pollutants into sensitive salmon-bearing streams and estuaries. The region's steep terrain and shallow soils increase erosion risks, making stormwater management critical for protecting water quality and aquatic habitats.
Frequently asked questions
The CALDER MINE stormwater outfall is located in Shakan, Alaska, United States, within the Prince of Wales-Outer Ketchikan Census Area.
CALDER MINE is a stormwater outfall that manages runoff from an industrial mining catchment, classified under NAICS code 212312 (Crushed and Broken Limestone Mining and Quarrying).
Stormwater outfalls in Alaska are regulated under the US Clean Water Act and EPA's NPDES MS4 permit program, which requires permits for discharges from municipal separate storm sewer systems and industrial activities.
The outfall discharges stormwater runoff from mining operations, which may contain sediment and pollutants. Proper management helps protect nearby streams and estuaries that support salmon and other aquatic species.
The NAICS code for CALDER MINE is 212312, which corresponds to Crushed and Broken Limestone Mining and Quarrying.
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