Overview
Klehini Sand and Gravel is a stormwater outfall in Haines, Alaska, managing runoff from an industrial sand and gravel operation. It operates under US EPA NPDES MS4 permit regulations.
Klehini Sand and Gravel is a stormwater outfall located at 25 Miles Haines Highway in Haines, Alaska. This facility manages stormwater runoff from a sand and gravel industrial site, a common source of sediment and pollutant discharge in the region. As a stormwater outfall, it is subject to the US EPA's National Pollutant Discharge Elimination System (NPDES) permitting framework, specifically under the Clean Water Act. In Alaska, stormwater management for industrial facilities like sand and gravel operations typically requires compliance with NPDES Multi-Sector General Permits (MSGP) or individual permits. These permits mandate best management practices (BMPs) to control erosion, sediment, and potential contaminants such as heavy metals or hydrocarbons. The facility's location in a rural area near Haines suggests that runoff may discharge to nearby water bodies, potentially affecting local aquatic ecosystems. The environmental significance of Klehini Sand and Gravel lies in its role in managing stormwater quality from an active industrial site. Proper operation helps prevent sedimentation and pollution in receiving waters, which is critical for maintaining water quality in Alaska's pristine environments. The facility's performance is tied to regulatory compliance and the implementation of effective stormwater control measures.
Environmental context
The facility is located in the Chilkat River watershed near Haines, Alaska, an area known for salmon spawning and diverse wildlife. Stormwater runoff from sand and gravel operations can carry sediment, which may impair water quality and aquatic habitats. Under the Clean Water Act, such outfalls must comply with NPDES permits that require erosion and sediment control measures to protect downstream ecosystems.
Frequently asked questions
Klehini Sand and Gravel is located at 25 Miles Haines Highway in Haines, Alaska, USA.
It is a stormwater outfall that manages runoff from a sand and gravel industrial operation.
The facility operates under the US EPA's NPDES permitting program, likely under the Multi-Sector General Permit for industrial activities, as required by the Clean Water Act.
Stormwater runoff from sand and gravel sites can carry sediment and pollutants that harm water quality and aquatic life. Proper management through BMPs prevents erosion and protects downstream ecosystems.
The facility helps control sediment and pollutant discharge into the Chilkat River watershed, which supports salmon and other wildlife, maintaining water quality in a sensitive Alaskan environment.
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