1 / 14

Nutrient Management in the Urban Landscape

Nutrient Management in the Urban Landscape. Rebecca Kluckhohn, P.E. Watershed Engineer West Metro Water Alliance Forum, May 18 th 2011. W. W e n c k. Engineers & Scientists. Overview: Urban/ Suburban. Why do we care? Sources Solutions Cost vs. Benefit. W e n c k.

colman
Download Presentation

Nutrient Management in the Urban Landscape

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nutrient Management in the Urban Landscape Rebecca Kluckhohn, P.E. Watershed Engineer West Metro Water Alliance Forum, May 18th 2011 W W e n c k Engineers & Scientists

  2. Overview: Urban/ Suburban • Why do we care? • Sources • Solutions • Cost vs. Benefit W e n c k Engineers & Scientists

  3. Why do we care? • Water resources • lakes & streams • Regulations • MS4s • TMDL • People complain • Level of service • Budgets W e n c k Engineers & Scientists

  4. Sources • Altered hydrology • Dry deposition & wash offfrom impervious areas • Urban green space • Pet waste • Urban wildlife W e n c k Engineers & Scientists

  5. Sources…Solution • Source: Altered hydrology? • Solution: Reduce runoff • Reduce impervious area • Mitigate soil compaction • Pervious pavement • Green roof • Depressional Storage W e n c k Engineers & Scientists

  6. Sources…Solution • Source: Dry deposition & wash offfrom impervious areas • Parking lots, driveways, rooftops, sidewalks • Solution: Manage what comes off of the impervious you do have • Disconnect them • Street sweeping • Pet waste ordinance • Education W e n c k Engineers & Scientists

  7. Sources…Solution • Source(s): Urban green space • Lawns, leaf litter, phosphorus fertilizer • Pet waste • Urban wildlife • Degraded wetlands • Solution • Leaf litter ordinance • Pet waste ordinance • Education W e n c k Engineers & Scientists

  8. BMPS: Where to put them? • Rain gardens, • Bioretention • Swales • Pervious pavement • Green roofs • Underground storage • Cisterns • Understand how to link: • Cost of design, construction, O&M of stormwater BMPs/ Benefits • Impact of practices/ BMPs on water quality– target a specific outcome • Communicate a level of service to constituents W e n c k Engineers & Scientists

  9. Things to Watch for: • Linkage of TMDL goals with MS4 permit requirements/ development requirements– this will most likely be more restrictive than current standards • Move from design standards to performance standards/ effluent limits W e n c k Engineers & Scientists

  10. Things to Watch for: • Emerging practices • Water Reclamation & Reuse • Twins Stadium • Kimball, MN • Integrated Functions for Stormwater Infrastructure • Aesthetic, recreation • Green Infrastructure W e n c k Engineers & Scientists

  11. Things to Watch for: • Economic Issues: • The need to quantify & communicate the value of stormwater management • The need for financing (long-term O&M) • Groundwater impacts • Climate Change– The intersection of stormwater management and energy management • Breakdown of the separation between dealing with “storm”water and just dealing with water W e n c k Engineers & Scientists

  12. Things to Watch Out for: • Green Infrastructure vs. Grey Infrastructure Don’t throw the baby out with the bathwater…you typically need both. Grey doesn’t always mean “not green”. • You can’t deal with the 100 year event in a rain garden • Application of BMPs will always be site specific • Justify costs to keep sustainability sustainable W e n c k Engineers & Scientists

  13. Opportunities: • Look for opportunities in your practice for creating visual expressions of stormwater management/ infrastructure to further the cause of water resource protection W e n c k Engineers & Scientists

  14. Questions? W W e n c k Engineers & Scientists

More Related