Southlake
-The Trinity River Authority has
reported the inadvertent out flow of wastewater
from its Kirkwood Branch Lift Station that
transports wastewater originating in Southlake to
its Denton Creek Regional Wastewater System
treatment plant in Roanoke.
The
out flow is a result of the failure of the pumps
in the DCRWS’s Kirkwood Lift Station causing
wastewater to back up into the pipeline system and
flow out of a nearby manhole located on Kirkwood
Branch north of Highway 114. Debris, to include
two by fours, is suspected of having contributed
to the failure of the pumps’ drive shafts.
Analysis and repairs of the equipment will be
perform. The lift station’s multiple pumps were
intended to provide redundancy and reliability.
TRA employed pump trucks to move as much
wastewater as possible from the lift station and
vicinity of the out flow to gravity flow segments
of the pipeline system closer to the wastewater
treatment plant located off of Highway 377 north
of Roanoke. In addition, a contractor was
mobilized to construct a temporary earthen berm
downstream of the out flow to contain and minimize
flows to downstream areas during the event.
The lift station normally moves wastewater generated
in Southlake through a pressure line to gravity flow
segments of the collection system that lead to the
treatment plant.
It
is estimated that 205,000 gallons of wastewater out
flowed into Kirkwood Branch that enters into the
Kirkwood Branch drainage cove before entering
Grapevine Lake. The undesirable event is not
expected to have any impact on water quality in the
lake. Follow up water quality sampling of the creek,
cove and lake is underway. TRA will complete a
remediation of the area that could potentially be
impacted by the wastewater spill as part of the
repair of the pump station. The Texas Commission on
Environmental Quality has been notified of the spill
and TRA has initiated efforts to contact all
entities that depend on Lake Grapevine as a public
water supply.
TRA replaced one of the lift station
pumps before midnight, February 15 and resumed
normal operations.
For
more information please contact John Jadrosich,
(817) 467-4343
Texas Commission on Environmental Quality
Chapter 319 - General Regulations Incorporated Into
Permits
Rule Log No. 99031-319-WT
Figure: 30 TAC §319.303
NOTICE OF SPILL FROM A WASTEWATER FACILITY
A
spill from a wastewater treatment or collection
facility has occurred.
INFORMATION ABOUT THE SPILL
Facility Name: Trinity River Authority Denton
Creek Regional Wastewater System
Contact
for further information: John Jadrosich
(817) 467-4343
Location
of the spill: Manhole on Kirkwood Branch
north of Highway 114 in Southlake
Estimated
time and date of spill: 2/15/03 8:00AM to
midnight
Estimated
volume of the spill (number of gallons):
205,000 gallons
Type of spill: (domestic)
(industrial) (other) Explain other
Area potentially affected: Kirkwood Branch enters
Kirkwood Branch drainage cove before entering into
Grapevine
Lake
Suspected cause of spill: Failure of two 300 hp
pumps in Kirkwood Branch Lift Station
THE FOLLOWING ACTIONS HAVE BEEN TAKEN:
*Appropriate local governmental officials have been
notified.
*TCEQ
regional office has been notified.
The
spill has been contained.
Increased
monitoring of water supply systems has been
initiated.
The cause of the spill has been corrected.
*Clean-up
activities are underway/completed.
*Other-
Sampling of creek, cove and lake is underway
