| Overall Rating | Silver - expired |
|---|---|
| Overall Score | 47.40 |
| Liaison | Morgan Hartman |
| Submission Date | Feb. 26, 2016 |
| Executive Letter | Download |
University of Nebraska - Lincoln
OP-27: Rainwater Management
| Status | Score | Responsible Party |
|---|---|---|
|
2.00 / 2.00 |
Liza
Garrett Stormwater Program Specialist EHS |
Does the institution use Low Impact Development (LID) practices as a matter of policy or standard practice to reduce rainwater/stormwater runoff volume and improve outgoing water quality for new construction, major renovation, and other projects?:
A brief description of the institution’s Low Impact Development (LID) practices:
UNL possesses a Small Municipal Separate Storm Sewer System National Pollutant Discharge Elimination System Permit issued by the Nebraska Department of Environmental Quality. UNLs SMS4 NPDES Permit requires all projects (e.g., new buildings, renovations of existing buildings, additions to existing buildings, construction of new parking lots, renovation of existing parking lots) to consider the feasibility of post-construction runoff controls. All new development or significant redevelopment projects on the UNL City and East Campuses that disturb land in excess of 1/2 acre in size shall include Low Impact Development (LID) Best Management Practices (BMPs) to provide for post-construction water quality control of the maximum extent feasible but no less than the first one-half inch of runoff from the site.
Has the institution adopted a rainwater/stormwater management policy, plan, or strategies that mitigate the rainwater runoff impacts of ongoing campus operations through the use of green infrastructure? :
A brief description of the institution’s rainwater/stormwater management policy, plan, and/or strategies for ongoing campus operations:
UNL has a policy that construction that disturbs land in excess of 1/2 acre in size shall include Low Impact Development (LID) Best Management Practices (BMPs) to provide for post-construction water quality control of the maximum extent feasible but no less than the first one-half inch of runoff from the site. In addition, post-development stormwater flow rates and volumes should not exceed pre-development conditions during the 100-year, 24-hour storm event, to the extent practicable.
A brief description of any rainwater harvesting employed by the institution:
UNL does not currently have any rainwater that is harvested and stored on campus.
Rainwater harvested directly and stored/used by the institution, performance year:
A brief description of any rainwater filtering systems employed by the institution to treat water prior to release:
UNL uses a number of techniques to filter stormwater prior to release. Each method is carefully chosen to work in the urban environment of City Campus or the more natural environment of East Campus. Such methods include silva cells, bioretention areas, rain gardens, natural prairie, pervious concrete/pavement, hydrodynamic separators, and green roofs.
A brief description of any living or vegetated roofs on campus:
During a renovation to UNL's Whittier Building, Landscape Services installed a green roof to act as a test for the unconventional roof system. UNL will monitor the success of the program to determine its practicality for future projects. there is also a 108 square foot green roof project at Keim Hall on East Campus
http://cojmc.webfactional.com/2011/10/04/roof-sprouts-green-future-for-unl/
A brief description of any porous (i.e. permeable) paving employed by the institution:
In its recent expansion of Memorial Stadium UNL installed the Silva Cell modular suspended pavement system along the 12th St. Mall. Silva cells and permeable pavers are also at Love Library North. Silva Cells help hardscapes support large wight loads while only compacting soils lightly. Thus enabling tree roots the oxygen and water they need to support tree growth.
More information about Silva Cells can be found at: http://www.deeproot.com/products/silva-cell/overview
Porous concrete was used on a parking lot at 19th and Vine.
A brief description of any downspout disconnection employed by the institution:
Many of UNL's older buildings are disconnected from storm water drains. Splash guards push water out to landscape.
A brief description of any rain gardens on campus:
A Rain Exchange system was installed as part of the Keim Hall Courtyard renovation, capturing water from the roof drains for use in a teaching pond and as a source of irrigation.
A brief description of any stormwater retention and/or detention ponds employed by the institution:
A brief description of any bioswales on campus (vegetated, compost or stone):
Bioswales have been built to capture runoff at Morrison. East of Keim Hall there is a system that captures runoff from Center St.
A brief description of any other rainwater management technologies or strategies employed by the institution:
The University has begun to use different soil mixes in their turf grass installation in order to get better infiltration. East Campus has many natural prairie areas that manage rainwater.
19th and Vine and 14th and Avery parking garage have hydrodynamic separators that are used to remove sediment and other pollutants.
The website URL where information about the institution’s rainwater management initiatives, plan or policy is available:
Data source(s) and notes about the submission:
The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.