Study Limitations

1
Study Limitations

• Secondary data given to us by BES
• Limited amounts of data
• Sampling error
• Not enough data available to answer desired
  questions

2
Summary of Results

• Flow Data
• Soil Samples Residential/Commercial Vs.
  Industrial
• Soil Samples 12th Ave Green Street Vs. All other
  facilities

3
Possible Reasons for Patterns and Trends Observed

• 12th Ave facility appears to have a capacity of
  around 3550 gallons.
• Higher levels of industrial facility
  contamination may be due to limited amounts of
  data or to a point or non point source.
• Mercury in the 12th Ave. facility may be also be
  due to a point source.
• More research is needed.

4
Future Research

• Need to continue data collection to obtain a
  longitudinal data set
• Long term function?
• Potential pollutant sinks?
• Are the current simulation methods valid for
  assessing functionality?

5
What can you do?

• Be informed
• Minimize impervious surfaces
• Create a rain garden
• Keep contaminants out of stormwater drains
• Use green gardening methods
• Disconnect your down spout

6
Portland, OR
Average yearly rainfall 38
Leader in Green movement
Combined Sewer/Stormwater System
Public education and outreach to encourage
citizens and businesses to take ownership of
water quality
7
Boulder, CO
Average yearly rainfall 12
Top 10 U.S. Green City
Separate Sewer and Stormwater Systems
Keep It Clean Program
8
Madison, WI
Average yearly rainfall 37
Stormwater mitigation practices began in 1980s
Separate Sewer and Stormwater Systems
1000 Raingarden Program
9
Austin, TX
Average yearly rainfall 32
Created sand sediment filter system
Most flood-prone city in U.S.
Green Gardening and Clean Stream programs
10
Thanks!

• We would like to thank the following people for
  their help in putting this project together
• Bill Becker
• Jack Kirschenbaum
• Kurt Langon, LangoHansen Architects
• Dave Humber, MGH and Associates
• Andrew Bernaus, Richard Brown Architects
• Tom Liptan, BES
• The Cities of Madison (WI), Austin (TX) and
  Boulder (CO)

11
Selected References

• BES 2006 Stormwater Management Facility
  Monitoring Report
• City of Sandy Stormwater Mitigation Techniques
• NRDC Stormwater Strategies -- Chapter 12
• Rain Garden Network
• Stormwater Management Techniques _at_ EPA.gov
• Wikipedia articles Bioswale, Green Roof, Rain
  Garden

12
Image Credits
Slide 1 Image 1 http//www.portlandonline.com/be
s/index.cfm?c44407 Slide 1 Image
2 http//www.portlandonline.com/bes/index.cfm?ab
efahhcdcbce Slide 7 Image 1 http//www.portlan
donline.com/bes/index.cfm?abefahhcdcbce Slide
8 Image 1 http//www.portlandonline.com/bes/inde
x.cfm?abefahhcdcbce Slide 9 Image 1
http//www.duluthstreams.org Slide 10 Image
1 http//www.portlandonline.com/bes/index.cfm?ab
efahhcdcbce Slide 11 Image 1 http//www.portlan
donline.com/bes/index.cfm?a123776c45386 Slide
12 Images http//www.portlandonline.com/bes/inde
x.cfm?a123776c45386 Slide 13 Images
http//www.portlandonline.com/bes/index.cfm?c44
463 Slide 14 Image 1 http//www.portlandonline.co
m/shared/cfm/image.cfm?id88327 Slide 15 Image
1 http//www.portlandonline.com/shared/cfm/image.
cfm?id63096 Slide 16 Image 1 http//extension.mi
ssouri.edu/explore/images/g09215art03.jpg Slide
18 Image 1 http//www.socialresearchmethods.net/k
b/stat_t.php Slide 19 Image 1 http//bdaugherty.t
ripod.com/KeySkills/Images/correlation.gif Slide
24 Image 1 www.prolawncare.co.uk Slide 30 Image
1 http//www1.istockphoto.com/file_thumbview_app
rove/497983/2/istockphoto 497983_fertile_soil_samp
le_high_key_with_clipping_path.jpg