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Directors' Guide to Storm Water Quality
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Directors' Guide to Storm Water Quality

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Directors' Guide to Storm Water Quality Directors' Guide to Storm Water Quality Presentation Transcript

  • Adam Frey Storm Water Solutions, LP
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  • June 22, 1969 View slide
    • The CWA established the NPDES along with two major goals:
      • Water quality that is both “fishable” and “swimmable” by 1983
      • Zero discharge of pollutants by 1985
    • Regulated combined sewer systems, industrial waste water, and animal feed lots.
    • The EPA originally exempted storm water from regulation by defining it as non-point source pollution.
    View slide
    • By 1987, the CWA was amended to define storm water as a point source pollution.
    • Urban runoff is considered the largest source of storm water pollution.
    • The current EPA permitting programs do not distinguish untreated sewage from urban storm water runoff.
    • Common Pollutants in Waste Water
    • Common Pollutants in Storm Water
    • Nutrients
    • Bacteria/Pathogens
      • E-Coli
    • Emulsions
      • Hair Colorant, Adhesive…
    • Toxins
      • Poisons, Medicine…
    • Inorganics
      • Sand, Grit…
    • Nutrients
    • Bacteria/Pathogens
      • E-Coli
    • Emulsions
      • Paint, Oils…
    • Toxins
      • Pesticides, Herbicides…
    • Inorganics
      • Sediment, Metals…
    • Waste Water Outfall
    • Storm Water Outfall
    • Phase I permit program began in 1990.
    • Regulated “Medium and Large” municipal entities that own storm water conveyance systems (populations of 100,000+).
    • Each Phase I entity was required to obtain an individual permit from the EPA – custom written for their local pollution issues.
    • Had to address municipally owned facilities as well as private business.
    • Effective October 1, 1998, the EPA issued a NPDES storm water permit to the City of Houston, Harris County, Harris County Flood Control District (HCFCD) and Texas Department of Transportation (TxDOT) as co-permittees.
    • This coalition has come to be known as the Joint Task Force (JTF).
    • Implementation and maintenance of best management practices (both structural and non-structural).
    • Prohibit illegal dumping and disposal of hazardous chemicals.
    • Monitor and analyze storm water.
    • Regulate industrial sites, construction sites, and urban runoff
    • Educate the public about storm water pollution.
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    • Placed stricter water quality standards for outfalls constructed after 2003.
    • Required drainage facilities to have storm water quality structural controls installed to reduce floatables.
    • Required the implementation of a Storm Water Quality Management Plan.
    • The JTF is the regulator – forcing the public’s compliance keeps the JTF compliant.
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    • EPA designated the State of Texas as an authorized permitting authority in 1998.
    • All permitting authorities were initially required to implement the Phase II Program by December 2002.
    • Multiple groups in Texas sued the EPA in an effort to halt the Phase II permitting program. The U.S. Supreme Court ultimately sided with the EPA in June 2004.
    • The TCEQ issued General Permit #TXR040000 in August 2007.
    • It is a 5 year permit and will be up for renewal in August 2012.
    • It requires the implementation of 6 minimum control measures plus 1 optional.
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    • The EPA is requiring permitting authorities to set an effluent limit on construction sites of 280 NTUs.
    • The regulations will effect Texas in 2013 when the TCEQ renews the CGP (TXR150000).
    • For all rain events less than a 2 year, 24 hour event (~5 inches in Houston).
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    • Any district construction project over 10 acres or any project part of a larger plan of development will be subject to these regulations (treatment plant expansion, park improvements, etc).
    • Displaced sediment (the source of turbidity) causes damage that requires expensive rehabilitation to District drainage facilities.
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    • Total Maximum Daily Loads (TMDL) are budgets for pollution. They define an environmental target by determining the extent to which a certain pollutant must be reduced.
    • Districts discharging into a water body with an established TMDL will be required to comply with an Implementation Plan.
    • TMDLs require regular monitoring and may require treatment of runoff.
    • Notable TMDLs in Place
      • Houston Ship Channel (Nickel) – 2001
      • Lake Austin (DO) - 2001
    • Notable TMDLs development in progress:
      • Upper Oyster Creek (Bacteria)
      • Buffalo and Whiteoak Bayous (Bacteria)
      • Upper and Lower San Antonio River (Bacteria)
      • Upper Gulf Coast Oyster Waters (Bacteria)
    • The EPA is collecting information through a required questionnaire to be completed by:
      • Owners and Developers of Construction Projects
      • NPDES Permitting Authorities (i.e. TCEQ)
      • Regulated and Non-Regulated MS4 operators
      • State and Local DOTs
    • The financial records and technical data reported in the questionnaire will shape future rule making.
    • In 2008, The National Research Council released a report calling for fundamental changes to the current NPDES program.
    • The report finds:
      • EPA does not adequately account for cumulative contributions of multiple sources of pollutants from the same watershed, because discharges are permitted on an individual basis;
      • EPA should focus less on chemical pollutants found in storm water, and more on how urban settings increase the volume of water that enters nearby waterways.
    • Would eliminate individual permits.
    • Many Phase I and Phase II municipalities overlap watershed boundaries with differing water quality issues.
    • River authorities?
    • Water Masters?
    • Regional Water Authorities?
    • Storm Water Utilities?
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    • By reducing the volume of runoff, pollutant loading will be reduced.
    • EPA is exploring options to reduce urban runoff volume.
    • Low Impact Development?
    • Greater retention standards?
    • Rooftop gardens?
    • Permeable concrete?
    • Green Infrastructure?
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    • Adam Frey
    • MS4 Compliance Manager
    • 12200-A Duncan Road (281) 587-5950 Office
    • Houston, Texas 77066 (281) 587-5999 Fax
    • [email_address] (832) 250-0989 Cell