Impacts on Groundwater Quality by Stormwater Practices

Project Details by Fiscal Year
2013 Fiscal Year Funding Amount
$66,340
2014 Fiscal Year Funding Amount
$33,438
Fund Source
Clean Water Fund
Recipient
Metropolitan Council/University of Minnesota - St. Anthony Falls Laboratory
Recipient Type
Local/Regional Government
Public College/University
Status
Completed
Start Date
January 2012
End Date
December 2013
Activity Type
Research
Counties Affected
Anoka
Carver
Dakota
Hennepin
Ramsey
Scott
Washington
Legal Citation / Subdivision
M.L. 2011 (Special Session) Chp. 6 Art. 2 Sec. 9
Appropriation Language

$500,000 the first year and $500,000 the second year are for implementation of the master water supply plan developed under Minnesota Statutes, section 473.1565.

2013 Fiscal Year Funding Amount
$66,340
Other Funds Leveraged
$0
Direct expenses
$66,340
Administration costs
$0
Number of full time equivalents funded
0
Proposed Measurable Outcome(s)

This project proposes to generate information about the impacts of nitrate, selected metals, chloride, lead, and petroleum hydrocarbons in stormwater infiltration at three sites across the Twin Cities metro area.

Measurable Outcome(s)

The impacts of nitrate and most of the metals analyzed from stormwater infiltration, at these three sites, is low.  The impact of chloride was significant, with higher than expected concentrations measured in the summer and autumn.  Lead was measured in the soil water beneath the infiltration devices, as were total petroleum hydrocarbons (the latter at one site).  Results for these analytes were inconclusive.

Source of Additional Funds

NA

Recipient Board Members
Susan Haigh (Chair), Roxanne Smith, Lona Schreiber, Jennifer Munt, Gary Van Eyll, Steve Elkins, James Brimeyer, Gary L. Cunningham, Adam Duininck, Edward Reynoso, John Doan, Sandy Rummel, Harry Melander, Richard Kramer, Jon Commers, Steven T. Chavez, Wendy Wulff
Legal Citation / Subdivision
M.L. 2011 (Special Session) Chp. 6 Art. 2 Sec. 9
Appropriation Language

$500,000 the first year and $500,000 the second year are for implementation of the master water supply plan developed under Minnesota Statutes, section 473.1565.

2014 Fiscal Year Funding Amount
$33,438
Other Funds Leveraged
$0
Direct expenses
$33,438
Administration costs
$0
Number of full time equivalents funded
0
Proposed Measurable Outcome(s)

See 2013 Fiscal Year Proposed Measureable Outcomes.

Measurable Outcome(s)

The impacts of nitrate and most of the metals analyzed from stormwater infiltration, at these three sites, is low. The impact of chloride was significant, with higher than expected concentrations measured in the summer and autumn. Lead was measured in the soil water beneath the infiltration devices, as were total petroleum hydrocarbons (the latter at one site). Results for these analytes were inconclusive.

Recipient Board Members
Susan Haigh (Chair), Roxanne Smith, Lona Schreiber, Jennifer Munt, Gary Van Eyll, Steve Elkins, James Brimeyer, Gary L. Cunningham, Adam Duininck, Edward Reynoso, John Doan, Sandy Rummel, Harry Melander, Richard Kramer, Jon Commers, Steven T. Chavez, Wendy Wulff
Project Overview

The Twin Cities metropolitan area has a rich history and connection with its waters. In an effort to keep surface waters clean, a wide variety of stormwater practices have been developed and installed throughout the metro in recent years. Many of these, such as rain gardens and infiltration basins and trenches, are intended to reduce the total runoff volume by infiltrating stormwater. Six to seven aquifers underlie the metro area and provide residents with drinking water. There are concerns that contaminants commonly found in stormwater (organics, toxic metals, nutrients, chloride, etc.) are infiltrating through the metro area practices into the groundwater.The objective of this project are to investigate the impact of stormwater infiltration practices on groundwater quality in the metro area. This objective will be achieved through a combination of a literature survey, laboratory studies, and field measurements.

Project Manager
First Name
Brian
Last Name
Davis
Organization Name
Metropolitan Council
Street Address
390 Robert Street North
City
Saint Paul
State
MN
Zip Code
55101
Phone
(651) 602-1519
Email
Brian.Davis@metc.state.mn.us