Developing Green Stormwater Design Solutions For UIC Compliance

  • View
    35

  • Download
    0

Embed Size (px)

DESCRIPTION

Developing Green Stormwater Design Solutions For UIC Compliance Presented by: Adam Zucker PE, CWRE. 819 SE Morrison Street ● Suite 310 ● Portland, Oregon 97214 ● 503.274.2010 ● www.vigil-agrimis.com. What do we mean by UIC?. - PowerPoint PPT Presentation

Text of Developing Green Stormwater Design Solutions For UIC Compliance

  • Developing Green Stormwater Design Solutions For UIC Compliance

    Presented by: Adam Zucker PE, CWRE819 SE Morrison Street Suite 310 Portland, Oregon 97214 503.274.2010 www.vigil-agrimis.com

  • Underground Injection Control

    - A federal program under the Safe Drinking Water Act that regulates the injection of fluids into the ground

    Purpose:

    To protect groundwater from contaminationWhat do we mean by UIC?

  • UIC 101 History Of Injection Wells Early Injection - Injection of water to extract salts was documented in China around 300 A.D. and in France in the 9th Century

  • UIC 101 History Of Injection Wells 1930s- Oil and Gas Extraction

    1940s- Oil refineries begin to inject wastes into ground

    1950s - Chemical companies begin injecting industrial waste into deep wells

  • UIC 101 History Of Injection Wells 1960s- Deep well injection causes earthquakes in Colorado- 1st documented case of drinking water contamination

    1970s- Wastes spilling out of an abandon oil well traced to an injection well used by a pulp mill some distance away

    -Congress passes the Safe Drinking Water Act - 1974

  • UIC 101 Regulations1980s - Federal UIC regulations are passed Define 5 classes of injection wells

    - Washington Department of Ecology (DOE) andOregon Department of Environmental Quality (DEQ)delegated the authority to administer the UIC program - 1984

  • UIC 101 Regulations State UIC enforcement responsibilities - Primacy

  • UIC 101 Classes of Injection Wells Class I :Deep injection wells for municipalities and industries (549 wells)

    Class II :Oil and Gas production (143,951 wells)

    Class III :Mineral Extraction (18,505 wells)

    Class IV : Shallow storage of hazardous and radioactive wastes. Banned in 1984 (32 sites)

    Class V : All other injection wells (400,000 to 650,000 wells)well inventory numbers based on EPA data

  • Several subcategories for Class V wells

    Septic Systems Groundwater RechargeHeating and CoolingGeothermal Stormwater Disposal UIC 101 Class V Wells

  • Injection Well Sump Soakage TrenchFrench Drain Seepage PitDrainfieldSoakaway UIC 101 Class V Stormwater Wells

  • UIC 101 Class V Stormwater Wellsbut for this presentation we generally mean Drywells

  • UIC 101 Drywells

  • UIC 101 Wells

  • UIC 101 Back to the Regulations- In 1999 Federal regulations for Class V UICs are revised/clarified States begin to revise their rules and adopt the following general requirements: Must be registered Have no impact on water QualityMeet all other state and federal requirements Stormwater only; runoff minimized No other disposal optionsIsolated from Drinking water sources No soil or groundwater contamination Not deeper than 100 AND adequate groundwater separation Pretreatment and spill prevention

  • Generally requirement:Groundwater Separation RequirementsThe bottom of the drywell should be at least 10 feet above the groundwater table.

  • USGS Groundwater Study - 2008

  • How to deal with the groundwater vertical separation requirements?- Connect into a piped stormwater conveyance system

    - Modify the existing drywell

    - Surface Infiltration LID and Green Streets Sorting out UIC compliance

  • Connecting to an Existing Storm System

  • Connecting to an Existing Storm System

  • Connecting to an Existing Storm System

  • Utility Conflicts

  • Utility Conflicts

  • Utility Conflicts

  • Utility Conflicts

  • Retrofitting Existing Drywells

  • Retrofitting Existing Drywells

  • Retrofitting Existing Drywells

  • Retrofitting Existing Drywells

  • Retrofitting Existing Drywells

  • Retrofitting Existing Drywells

  • Retrofitting Existing Drywells

  • Connecting to an Existing Storm System

  • Retrofitting Existing Drywells

  • Retrofitting Existing DrywellsDetermining hydraulic capacity of drywell retrofit - Drainage basin area - Design storm - Subsurface soil conditions - Capacity tests

  • Retrofitting Existing Drywells

  • Retrofitting Existing Drywells

  • Surface Infiltration - Green Street / LID

  • Surface Infiltration - Green Street / LID

  • Surface Infiltration - Green Street / LID

  • Surface Infiltration - Green Street / LID

  • Surface Infiltration - Green Street / LID

  • Surface Infiltration - Green Street / LID

  • Surface Infiltration - Green Street / LID

  • Surface Infiltration - Green Street / LID

  • Surface Infiltration - Green Street / LID

  • -No longer an overflow to storm sewer system

    Space constraints; limited right-of-way

    -Capturing all the runoff at intersections

    - Facility Longevity

    - Be conservative and provide redundancy Surface Infiltration - Green Street / LID

    Design Challenges and Concerns

  • Questions819 SE Morrison Street Suite 310 Portland, Oregon 97214 503.274.2010 www.vigil-agrimis.com