Corrective Action Plan - Tennessee Valley Authority

Kingston Ash Release March 2009
Corrective Action Plan
the AAMP will aid in identifying potentially adverse off site impacts, so that these conditions can
be remedied as necessary.
This monitoring plan may be augmented for task-specific activities, as appropriate. For
instance, if a type of dust suppression agent is used on the ash, air samples from closer
locations may be collected for additional analysis to determine the efficacy of the chosen agent.
3.1.2 GROUNDWATER
As discussed in greater detail in Section 4 of this CAP, monitoring of groundwater from both
onsite and offsite locations has been an ongoing activity since the initial ash spill in order to
determine affects on localized groundwater resources and public health. This routine
monitoring will continue and a SAP will be developed to support this work.
In support of task specific cleanup activities or design requirements, focused DQO sessions will
be completed which will establish task specific groundwater sampling approaches and
subsequent SAPs to support these activities. These plans may include the installation of
additional groundwater monitoring and observational systems to supplement existing monitoring
networks. The content of the plans will depend on the type and location of planned remedial
activities.
Groundwater well abandonment plans and procedures may also be developed in order to
support activities associated with the well abandonment for KIF wells damaged during the initial
event or wells deemed as no longer required as part of future monitoring. Groundwater well
abandonment plans will be developed in accordance with applicable state requirements.
3.1.3 SURFACE WATER
Initial water quality monitoring began December 22, 2008 and was focused on evaluating the
extent of water quality affects associated with the ash spill. Variables monitored focused on
total suspended solids and heavy metals, as these variables were determined to be most likely
to be elevated by a spill of this type. One focus of the early monitoring was to determine
whether there had been any effect on public drinking water supplies. Samples of river water
were collected in close proximity to the Kingston Water Treatment Plan (KWTP) intake near
TRM 568. Subsequently, following a few days of TVA monitoring of river water and finished
drinking water quality at that plant, a program was developed in which TDEC obtained samples
of both raw and finished water, ultimately at the four water utilities in closest proximity to the
spill, and had them analyzed by the Tennessee Department of Health Environmental
Laboratory. It is expected that this routine monitoring of public water supply intakes and
finished water will continue throughout the ash cleanup effort.
In support of both routine and task specific activities, TVA will continue its monitoring of surface
water three times per week at five locations on the Emory River, four locations on the Clinch
River, and two locations on the Tennessee River during dredging operation (Table 3.1). These
designated surface water monitoring sites will also be sampled after every 0.5” or greater (24-
hour total) rain event as monitored at the onsite TVA mobile lab and the meteorological station
co-located with an air monitoring station on Lakeshore Drive. This plan will be amended or
updated, as required, as various remedial actions are planned. Additional in-situ stream
measurements such as turbidity monitoring could be conducted as specified in the plans.
Implementation of a long-term sampling plan for surface water will continue throughout the
recovery and remediation process to ensure that any threat to public health is quickly detected.
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