Stormwater Awareness. Introduction. UNC has a Stormwater Permit from the North Carolina Department of Environment and Natural Resources (NCDENR) The permit requires “stormwater pollution awareness training for appropriate faculty, staff, students, and volunteers”
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What pollutes stormwater?
Neuse River, NC(2003) An estimated 2 million fish killed due to low oxygen as a result of polluted stormwater runoff.
The northern areas of campus drain to Battle Branch Creek located in Battle Park behind the Forest Theatre.
Central campus drains to Meeting of the Waters creek which is visible near the intersection of Bell Tower Drive and South Road before entering a pipe and flowing underneath Kenan Stadium. This pipe discharges below Boshamer Stadium in the Coker Pinetum.
Much of South Campus drains to a branch of Meeting of the Waters creek located near the Dean Smith Center.
All stormwater runoff from campus eventually ends up in Jordan Lake!
General Rule- only rain can go into the stormwater system. If you wouldn’t want to swim in it, don’t put it in the drain. Intentional disposal into storm drains, cross connections with other piping systems, improper storage of chemicals, and chemical spills can all have negative impacts on water quality and in many cases are illegal.
OK in Stormwater Drains:
It is not OK to dispose of paint, chemicals, or solid waste into the storm drain. If you have paint or chemicals you need to dispose of, or see anyone disposing of anything into a storm drain contact EHS at 962-5507.
Contractors and UNC employees working in the area were spoken to and reminded of the correct ways to dispose of paint. Dried paint was cleaned up as much as possible. (11/21/2007)
A cross connection occurs when a drain or pipe is improperly connected to the storm drain system.
Upon discovery, this washing machine was immediately taken out of service. (11/11/2008)
The water discharge for this washing machine was routed through a small pipe that went through the wall of an air handler. The water then dumped into a drain in an outdoor air intake pit that was connected to the stormwater system, resulting in the water getting to the creek. This water should have been routed to the sewer system when the washing machine was installed.
The following pictures are from the Ram’s Head loading dock located on the ground floor of the Rams Head parking deck
The loading dock area was constantly slippery from garbage and other food waste that was leaking from the dumpsters on the loading dock.
In order to remove the slip hazard, the workers routinely used a degreaser to wash the loading dock area. The trench drain located at the loading dock was connected to the stormdrain system so all the degreaser and grease ended up in the creek.
To remedy this discharge a sump pump was installed in the trench drain that ran to the sanitary sewer instead of the stormwater system.
If you suspect you have found a cross connection into the stormwater system call EHS at 962-5507. EHS will access building plans to try and determine if a cross connection exists. EHS can also perform biodegradable dye tests to determine where pipes discharge.
Dye in the water confirming that a laundry facility was discharging into the storm drain instead of the sanitary sewer. This connection was fixed and the laundry facility was connected to the sanitary sewer.
Improper storage of materials outdoors and not cleaning up spills of hazardous materials are both common sources of stormwater pollution.
This bucket was found with oil on top of the lid. If not corrected the oil would wash into the nearest storm drain the next time it rained. If you have see a situation like this or have a spill call EHS at 962-5507.
This situation was addressed immediately by contractor responsible for the bucket. (3/4/08)
Chemicals and hazardous materials must also be stored and disposed of correctly.
Issues were addressed immediately by contractor. (8/19/2005)
Spill cleaned up by EHS. (5/29/2008)
It is important to follow manufacturers instructions when applying pesticides, herbicides, and fertilizer. Never apply pesticides immediately before rain is forecast, and be careful not to over fertilize. Rain can wash the pesticides, herbicides, and excess fertilizer into the storm drain system.
Silt fence was repaired, and slope above the fence was seeded to prevent erosion. (1/30/2008)
Contractor covered pile until it was removed. (10/29/08)
The following day, EHS visited the site and contractor repaired all ESC deficiencies. (11/15/07)
Smaller projects are required to install erosion and sedimentation control measures. On this site either silt fence should have been installed on the down slope areas or temporary cover should be placed on the area when not being actively worked or when rain is forecast. For small areas like this, plastic tarps work well to prevent erosion.
Department responsible for this area installed permanent cover to prevent erosion upon notification by EHS. (1/30/2008)