Overall Rating Gold - expired
Overall Score 65.87
Liaison Lindsay Batchelor
Submission Date Jan. 5, 2016
Executive Letter Download

STARS v2.0

North Carolina State University
OP-27: Rainwater Management

Status Score Responsible Party
Complete 2.00 / 2.00 Jeanette Powell
Environmental Affairs Coordinator
Environmental Health and Safety
"---" indicates that no data was submitted for this field

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?:
Yes

A brief description of the institution’s Low Impact Development (LID) practices:

The Physical Master Plan standards for Stormwater include:
•Address runoff as close to the source as possible
•Minimize negative impacts on humans and the environment
•Utilize innovative, low maintenance methods for keeping stormwater onsite

See Section 2.2 of the NCSU Stormwater Development Manual http://www.ncsu.edu/ehs/environ/Stormwater_Development_Man.pdf


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? :
Yes

A brief description of the institution’s rainwater/stormwater management policy, plan, and/or strategies for ongoing campus operations:

The NCSU Stormwater Development Manual includes requirements for constructed facilities that mimic natural rainwater attenuation, stream buffers for runoff infiltration and resource protection, and nutrient management options for reducing pollutant loading.

The primary components of the Stormwater Management Program include:
•Stormwater and Nutrient Management
•Sediment and Erosion Control
•Education, Outreach and Public Involvement
•Stormwater discharge and Water Quality Monitoring
•Illicit Discharge detection & elimination
•Post construction stormwater management
•Pollution Prevention and good housekeeping

Stormwater control measures are inspected on a monthly basis and after precipitation events greater than 1/2 inch within a 24 hour period. Approximately 3 - 7 devices are renovated each year based on available funding and severity of non-functionality; a running priority list is maintained by Grounds Management. During the final months of Fiscal Year 2014/2015 Grounds Management has completed a re-organization with creation of a crew to specifically manage parking lots and Stormwater Control Measures (Structural BMPs and select associated practices) In addition to Structural BMPs, Rocky Branch Creek is "The Reference Stream" for the university, water quality is measured by EH&S, all outfalls are monitored as well.


A brief description of any rainwater harvesting employed by the institution:

Talley Student Center has a cistern that collects rainwater which provides irrigation for turf and is intended for green roof section. Wolf Ridge has a cistern that collects rainwater and provides irrigation for sections of turf.

Sullivan Shops III has a 30,000 gallon storage system. Rainwater is incorporated into building to flush toilets and is used to fill small tanks used to supplement irrigation of plant material - estimated saving of approximately 25,000 gallons of potable water per year using collected water.


Rainwater harvested directly and stored/used by the institution, performance year:
25,000 Gallons

A brief description of any rainwater filtering systems employed by the institution to treat water prior to release:

There are currently 9 Delaware Sand Filters that exist, 1 sand filter incorporated as a volleyball pit and an under ground sand filter/grit separator detention system, there are also 67 Bioretention devices that exist (see "Bioswales" section below); there are also 4 level spreaders and associated vegetated filter strips, 1 infiltration device, and 6 documented grassed swales.


A brief description of any living or vegetated roofs on campus:

The Engineering Building III has a green roof (2 adjacent sections at wind tunnel addition). The Hunt Library has 2 green roof sections at 5th floor, Tower Hall at Wolf Ridge has 2 sections, Ruby McSwain building at J.C. Raulston Arboretum has a section of green roof, Talley Student Center has 1 section of green roof with an additional section that may be incorporated.


A brief description of any porous (i.e. permeable) paving employed by the institution:

Permeable asphalt is located at "C" Lot above Isenhour Tennis (1st Row), Lake Raleigh Fishing Pier Parking has pervious pavement, and pervious sidewalk at the Wildlife Resources Commission building on Centennial Campus.


A brief description of any downspout disconnection employed by the institution:

This type of new practice is not known to be incorporated at the university.


A brief description of any rain gardens on campus:

The College of Design's Landscape Architecture Design+Built Studio design and construct rainwater retrofits that focused on resource-wise, sustainable land use.
-Designed and built by College of Design landscape architecture students, the rain garden prevents ponding, which attracts mosquitoes and other problems, and protects the newly restored Rocky Branch, an urban creek running through campus. The new rain garden contains a wide well with gravel and a perforated pipe. This filters contaminants which could otherwise flow into Rocky Branch. The garden is an attractive and inviting social space for student study and recreation while protecting the ecology in the area and creating a micro-habitat where butterflies and other pollinators can survive.

The landscape architecture students are responsible for designing and building three rain gardens on campus, located at Syme Hall, Lee Hall, and the most recent installment, "Artists' Backyard", located near Tucker and Owen Halls.


A brief description of any stormwater retention and/or detention ponds employed by the institution:

17 Wet Retention Stormwater Control Measures currently exist; 10 Dry Detention devices and 10 Constructed Wetlands.


A brief description of any bioswales on campus (vegetated, compost or stone):

67 Bio-retention devices currently exist, 8 are "turf type" over sand bio-media, the remaining are "tree/shrub" type, 1 "tree/shrub" type has PermaTill media.


A brief description of any other rainwater management technologies or strategies employed by the institution:

Structural Best Management Practices used to control stormwater quantity and quality on campus include:
• Bioretention
• Detention Basin (Wet and Dry)
• Filter Strip & Level Spreader
• Grassed Swale
• Infiltration Devices
• Sand Filter
• Constructed Wetland, Green Roof, Proprietary Technology, Permeable Pavement and "Open Channel Conveyance"


The website URL where information about the institution’s rainwater management initiatives, plan or policy is available:

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 and complete the Data Inquiry Form.