Brently J. Johnson, P.E., R.L.S.
Engineering Planning Chief
Suite 480, City County Building
P.O. Box 1631
Knoxville TN 37901
The Stormwater Engineering Division performs a wide variety of tasks: review
of site development plans and final property plats, attendance &
technical support at MPC meetings, drainage complaints and investigations,
inspection of grading projects, stormwater quality monitoring, stormwater
planning, and streetlight design. The Stormwater Engineering Division
is responsible for reviewing all subdivision designs to ensure that
construction will conform to requirements for street design, drainage,
stormwater detention, grading, erosion control, etc.
The majority of department personnel work directly
with stormwater issues. The City of Knoxville is required by the
U.S. Environmental Protection Agency to monitor, control, and investigate
all aspects of the municipal storm drainage system (which also includes
the various creeks and streams). A National Pollutant Discharge
Elimination System (NPDES) permit was initially issued to the City
of Knoxville in July 1996, and requires that the city make annual
progress reports to the Tennessee Department of Environment and
Conservation (TDEC). A new type of federal regulation is the establishment
and enforcement of Total Maximum Daily Loads
(TMDLs) for any impaired creeks or streams. This program
is also administered by TDEC. There are several local
water quality organizations that are active in the Knoxville
area; these organizations participate in creek cleanup activities
and actively pursue public education for adults and schoolchildren.
|City Adopts New Standard Details
|The City of Knoxville has adopted new standard details for COK-10 (Type "B" Cast Iron Frame, Grate and Inlet) and COK-11 (Type "B" Cast Iron Frame, Grate and Inlet (Mountable)). These new details allow for anti-theft measures to be included on catch basin frames and grates. The appropriate frame and grade specified in COK-10 or COK-11 must be used when installing drainage infrastructure in Right-of-Way or on City property. These standards are also recommended for use on private infrastructure, but are not required at this time.
Any new plan submitted on or after May 1, 2015, must use these new standard details for construction in Right-of-Way or City property. Click here to view the new standard details.
TNSA East TN Development Symposium
The 2014 TNSA East Tennessee Development Symposium will be
held at The Knoxville Convention Center (701 Henley Street
in Knoxville) on November 4th & 5th. Please visit the
Stormwater Association (TNSA) website for registration
and additional information. Seventeen (17) professional development
hours (PDH's) will be available for engineers and surveyors.
The Riparian Buffer Zone requirements have recently replaced
the Restricted-Use Buffer Zone requirements for waters of
the state within the City of Knoxville. Click
here for additional information. The requirements for
Buffer Zone can also be viewed in the Stormwater and Street
Control System Update
As of June 17, 2013, the City of Knoxville Survey Control
Network will be referenced to the NAD 83(2011) adjustment.
here for additional information.
LOCAL PROGRAM (QLP)
City of Knoxville has been approved by the State of Tennessee
as a Qualified Local Program (QLP) to accept, review, and
approve Construction General Permit SWPPP's for sites located
within the City beginning March 1, 2013.
Information about this program can be found in the Land Development
Manual un Policy
27 - Qualified Local Program Construction General Permit
The Engineering Department has developed the BMP
Manual to clearly explain requirements for stormwater pollution
prevention and erosion control, and also created the Land
Development Manual to assist developers with meeting all
design and construction requirements.
The Water Quality Hotline can be called anonymously
24 hours a day to report illicit connections or illegal dumping in
the creeks, streams, catch basins, storm sewer or any area draining
into the creeks or storm sewer system. The hotline is usually manned
during working hours on weekdays (depending on the number of calls).
The hotline is checked at least daily during weekends, or can be reached
by the 911 emergency dispatch center in the event of an emergency
Calls will be investigated by personnel from the
Stormwater Quality Section. Urgent or emergency calls involving hazardous
materials, human safety, or severe environmental damage must also
be reported to the fire department (call 911) and other agencies listed
in Table AM-07-1 of the Knoxville BMP Manual. See AM-01, AM-07 and
IC-01 of the Knoxville BMP
Manual for more information on reporting requirements and
regulatory contacts for spills and leaks. The responsible party for
the spill or leak is responsible for all costs incurred by the Knoxville
Fire Department, Engineering Department, and other public agencies