The following was information taken from epa.gov/tmdl/willamette-basin-mercury-tmdl as of 04.06.2020
The Oregon DEQ webpage provides information and resources to anyone intending to conduct metal mining operations in Oregon?s streams or rivers. DEQ's fact sheet, Water Quality Permits for Metal Mining Activities, describes all water quality permits required for metal mining/prospecting and ore processing operations that discharge wastewater to the land and state waters on private or public land. This fact sheet includes contact information for local, state and federal agencies in Oregon that may also have requirements related to mining.
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700-PM General Permit Renewal
The public comment period on the 700-PM National Pollutant Discharge Elimination System water quality general permit renewal is closed.
This permit renewal includes a revised format using Schedules A through F, requirements for electronic reporting when directed by DEQ, updates to conditions in Schedule F to meet federal requirements and DEQ?s standard conditions for industrial NPDES permits.
This permit will include information in the 2019 EPA Willamette Basin Mercury Total Maximum Daily Load. Permit coverage will not be available in streams that flow from the former Bohemia Mining District and are tributary to Dorena Reservoir.
DEQ intends to have a renewed permit available in May 2020.
700-PM General Permit
NOTE: Registration under the 700-PM general permit does not authorize suction dredge mining in areas where mining is prohibited.
A copy of the 700-PM general permit and resource materials are available at any DEQ office or by using the links provided below:
700-PM General Permit
700-PM General Permit Evaluation Report
700-PM General Permit Response to Comments
Department of Justice Memo
700-PM General Permit Evaluation Report (2015)
Response to Comments (2015)
700-PM General Permit: Application Information
Summary of basic 700PM requirements and conditions
Other Mining Discharges: Individual NPDES Permit
Small Off-Stream Mining and Ore Processing: Water Pollution Control Facility 600 General Permit
Large Off-Stream Mining and Ore Processing: Individual Water Pollution Control Facility Permit
Stormwater Permitting Considerations