Urban Water Quality Issues

  • Published on

  • View

  • Download

Embed Size (px)


NACAA Annual Meeting & Professional Improvement Conference. Urban Water Quality Issues. July 17th, 2008 Greensboro, North Carolina. Development Patterns. Ultra Urban Environment. Increasing: impervious areas land value Decreasing land availability Increasing Need for: - PowerPoint PPT Presentation


<ul><li><p>Urban Water Quality IssuesJuly 17th, 2008Greensboro, North CarolinaNACAA Annual Meeting &amp; Professional Improvement Conference</p></li><li><p>Development Patterns</p></li><li><p>Ultra Urban EnvironmentIncreasing:impervious areasland valueDecreasingland availability</p><p>Increasing Need for:Space Efficient Best Management Practices</p></li><li><p>Typical Urban Non-Point Source Pollutant Loading</p></li><li><p>Typical Urban Non-Point Source Pollutant LoadingAlgae bloom; York River, 9/9/05Courtesy Bill Portlock, Chesapeake Bay Foundation</p></li><li><p>Why is it that this particular design does not have to follow the fundamental unit processes of water quality?</p></li><li><p>Physics of Settling Stokes Law</p><p>Henry Darcy1803 - 1858Media Filtration Darcys Law</p></li><li><p>BMP EvaluationIn the Lab; or in the Field?</p></li><li><p>Lesson 1: Clearly Defined Project GoalsQuality Assurance Project PlanConditions and DefinitionsTreatment ObjectivePerformance GoalsProject DescriptionQuality Assurance Plan</p></li><li><p>Treatment Objectives and Performance Goals</p></li><li><p>Particle SizeTreatment Objectives and Performance Goals</p></li><li><p>Treatment Objectives and Performance Goals</p></li><li><p>Treatment Objectives and Performance Goals</p></li><li><p>Treatment Objectives and Performance Goals</p></li><li><p>Treatment Objectives and Performance Goals</p></li><li><p>Lesson 2: Sample CollectionGrab samplesFlow-paced auto samples</p></li><li><p>One Grab = One SnapshotMultiple Grabs =Multiple Snapshots</p></li><li><p>Lesson 3: Site Selection - LocationCurrituck Gas HouseBarco, NC</p></li><li><p>Lesson 3: Site Selection - Simplicity</p></li><li><p>Simple is better!1 pipe in and 1 pipe out!</p></li><li><p>Eliminate Variables and External Influences (MEP)Lesson:All fuel islands should have an Oil/Water Separator</p></li><li><p>Lesson 4: Learn the 1st Law of Monitoring:What Can Go Wrong, Will Go Wrong!</p></li><li><p>Once upon a time, there was this site . . .10/02System Maintenance10/02Remote automated sampling equipment Installed11/02 Remote automated sampling equipment disabled by insect infestation</p></li><li><p>Corrective Action Taken</p></li><li><p>As Luck Would Have It (or not):1-2/03Storm Capture5/03Phone Line Disabled by Lightning6/03Automated Sampling Equipment Fried by Lightning</p></li><li><p>But then . . .9/03New Automated Sampling Equipment Installed 9/03System Outfall Area Impacted by Adjacent Construction Activities and Heavy Storms</p></li><li><p>Hurricane Isabel</p></li><li><p>2/04Outfall Area RestoredBeforeAfter</p></li><li><p>The Saga Continues:3/04Storm Capture8-9/04Phone lines and Automated Sampling Equipment Disabled by Lightning (again); AND</p></li><li><p>Alex, Bonnie, &amp; Earl 8-9/04</p></li><li><p>We Are Committed!6/05Resume Monitoring</p></li><li><p>No Matter What . . .9/05Rodents</p></li><li><p>Corrective Action TakenAND THEN:</p></li><li><p>We Survived Hurricane Season 05</p></li><li><p>Happily Ever After8/06Project Completed!</p></li><li><p>Lesson 5: Predict the Weather and Act Fast</p></li><li><p>We Got Better!</p></li><li><p>Key Elements to a Successful Field Monitoring ProjectClearly defined Project GoalsData Quality ObjectivesMethodsAppropriate Site SelectionDedicated Project Team</p></li><li><p>Adaptive management in action</p><p>From: Restoration of Puget Sound RiversRalph and Poole, 2003As Conceived in Consensus Building ProcessAs Designed in Consensus Building Process </p></li><li><p>As generally implementedAdaptive management in pieces</p></li><li><p>Experimentation in the Urban Environment</p><p>Were running out of experimental opportunities!</p><p>Joe Battiata, Regional Regulatory Manager CONTECH Stormwater Solutions8005-C Creighton Parkway # 711Mechanicsville, VA 23111</p><p>(804) 789-1876, (804) 787-0237cell or (866) 740-3318BattiataJ@contech-cpi.comhttp://www.CONTECHstormwater.com</p><p>This is the educational portion of the presentation.</p><p>It is a good very to start setting the equivalences of different technologies.</p><p>G = 980 cm/sec^2Pp = Specific Gravity of the particle (2.65 for sand)P = specific gravity of water ( increase with decreased T)D = the particle diameter (cm)u = kinematic viscosity of water (decrease with T)</p><p>Clay SiltSandAdaptive Management A As perceived in consensus building process B As Typically Designed</p><p>Uncertain Ecological Risk</p></li></ul>