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CITY OF KNOXVILLE
ADOPT-A-STREAM PROGRAM |
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Contact Charissa Oglesby
865-215-4321
[email protected]
The City of Knoxville Adopt-A-Stream Program is a citizen-based monitoring and litter prevention initiative intended to protect the health and serenity of our local waterways. Our goals as an organization are to bolster our citizen's capacity to inspire positive environmental and social change through an elevated awareness of water quality issues, training on stream health monitoring, and an intimate involvement in the solution process through cleanups and other means reducing trash in and around our waterways. For more information on opportunities available in surrounding communities visit WaterQualityForum.org and contact your municipality’s Adopt-A-Stream Coordinator.
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MONITORING STATIONS |
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The City of Knoxville currently has five wet-weather monitoring stations located in the First, Love, Third, Fourth, & Williams streams watersheds. Each station grabs a water sample every 15 minutes whenever the instruments detect heavier-than-normal flow. A weighted composite sample is created and then tested for a dozen parameters as specified in the municipal NPDES permit. The values are then reported to TDEC-Division of Water Pollution Control as summarized by the NPDES Annual Reports that are prepared by the Stormwater Engineering Division.
Rainfall data is gathered for the purposes of estimating pollutant runoff loads, stream flows and to determine limits for wet-weather monitoring and sampling. |
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Brief History of NPDES Program
The National Pollutant Discharge Elimination System (NPDES) originally began as part of the 1972 Clean Water Act. The U.S. Environmental Protection Agency (USEPA) initially targeted point-source pollution (industrial plants, sewage plants) with sampling, monitoring, water treatment, improved material handling, better manufacturing technology, etc. This portion of the NPDES program has been very effective at improving water quality for lakes and streams in urban areas. However, as more data was gathered, it was learned that most pollution comes from nonpoint sources where it is difficult to identify the source and responsible party. Nonpoint pollution sources include: soil erosion, aerially-deposited particles, roadside trash, leaves and sticks, automotive fluids from leaking vehicles, products of incomplete combustion, food processing wastes, and transportation spills of chemicals and other pollutants. The Clean Water Act was amended in 1987 to include provisions for reducing nonpoint pollution sources. The NPDES permit system is managed by the Tennessee Department of Environment and Conservation (TDEC), with federal oversight maintained by USEPA.
The Storm Water Phase I Rule (1990) requires that large and medium-sized cities/counties must obtain a NPDES permit for municipal separate storm sewer systems (MS4s). These NPDES permits are renewable for a period of 5 years. A stormwater management program must be developed to reduce stormwater pollution, with several elements for which demonstrable progress must be achieved each year. The
original NPDES permit for the City of Knoxville was approved on July 1, 1996 by TDEC for a period of 5 years. It is currently in the process of being reissued by TDEC.
Example of NPDES Activities
NPDES activities are reported annually to TDEC as required by the NPDES permit. NPDES activities are grouped into the following five programs:
- Residential and Commercial
- Illicit Discharges and Improper Disposal
- Industrial and Related Facilities
- Construction Site Runoff
- Educational
The Stormwater Engineering Division maintains stormwater monitoring stations in the following watersheds: First Creek, Second Creek, Loves Creek, and two on Fourth Creek. The locations are shown in the NPDES Annual Reports that are submitted to TDEC. In addition to continuous wet-weather sampling at five locations, dry-weather samples are obtained and tested periodically at other locations in order to locate illegal discharges.
See the
Knoxville BMP Manual for a more thorough discussion of stormwater pollution and best management practices (BMPs). The BMP Manual contains an overview of stormwater pollution in Chapters 2 through 4, along with detailed BMP descriptions and applications. In addition, Chapter 8 contains many other weblinks to state and federal agencies of concern to stormwater drainage and stormwater quality designers.
The Stormwater Engineering Division investigates illegal discharges into the stormwater drainage systems and natural streams; call the Water Quality Hotline (215-4147; anonymous calls are accepted) to report spills and leaks during business hours. Emergency calls are typically handled by calling 911 for the City of Knoxville emergency hazmat team.
NPDES REPORTS
National Pollutant Discharge Elimination System (NPDES)
Please contact the Stormwater Engineering Division with written comments or suggestions. Be specific concerning the page number and location. Comments may also be e-mailed to
[email protected].
Downloadable NPDES Reports:
U.S. Environmental Protection Agency NPDES Links
Tennessee Department of Conservation (TDEC) Links