pretreatment and the local authority to protect their potw...pretreatment program • protect potw...
TRANSCRIPT
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Pretreatment and the Local Authority to Protect their
POTW
Al GarciaEPA Region 8 Pretreatment Coordinator
April 25, 2019
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Human Health
• Lewis Thomas – Lives of a Cell:Notes of a Biology Watcher
https://www.youtube.com/watch?v=GWQG1YZS9l4
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U.S. Waters in 1972
• Only a third of the nation's waters were safe for fishing and swimming.
• Many of the nation's rivers were little more than open sewers and sewage frequently washed up on shore.
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Clean Water Act
• Passed by Congress in 1972 to restoreand maintain the integrity of the nation’s waters.
• Provided billions of dollars for construction of new wastewater treatment plants and to upgrade existing plants.
• Makes illegal the discharge of pollutants without a permit.
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Clean Water Act - 1972• Establishes regulations for
commercial and industrial process wastewaters.
• Direct Dischargers - National Pollution Discharge Elimination System (NPDES)
• Indirect Dischargers – National Pretreatment Program
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Residential
Industrial
Commercial
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Pretreatment Program
• Protect POTW by regulating facilities that discharge toxic pollutants
• The program is a cooperative effort of Federal, State, Tribes and local environmental regulatory agencies.
• Only Environmental Program where EPA has authorized local governments (POTWs) directly to implement and enforce Federal Regulations.
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Damage to Collection System and/or Treatment
Plant
Interference with
Wastewater Treatment
Facility
Limitations on Sludge Disposal Options and/or Greater Expense
Injury to Workers from
Hazardous Fumes
Pass-Through of Pollutants into Surface Waters
Explosions
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Components of a Pretreatment Program
• Legal Authority• Resources/Funding• Enforcement Response Plan• Procedures• Local Limits• Industrial User Inventory
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IU Inventory
• Identify and Characterize IUs in the service area
• Notify of applicable Pretreatment Standards
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Pretreatment Standards
• Pretreatment Categorical Standards
• Prohibited Discharge Standards
• Local Limits
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Industrial User Liabilities
• Process wastewater generated
• Storage/handling/transfer of chemical supply, raw materials
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Pretreatment Control Mechanisms
• Wastewater Discharge Permit
• Best Management Practices
• Control Plans – Spills/Slug Discharges
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Minimizing Liability
• Pollution Prevention• Evaluation of Chemical/Raw Material
Handling Practices• Housekeeping• Wastestream Management
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