Under an agreement with the U.S. Environmental Protection Agency (EPA), the Puget Sound Naval Shipyard (PSNS) is required to take action to reduce the amount of copper in its wastewater and comply with its federal Clean Water Act permit requirements.
According to the Navy's own discharge reports, from May 2003 to July 2008, PSNS frequently violated its federal wastewater permit by discharging copper in excess of allowable levels. The shipyard's wastewater is discharged into Sinclair Inlet.
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