Except as otherwise provided by s.
NR 664.0001, owners and operators of hazardous waste
treatment, storage or disposal facilities that collect, store or treat
hazardous waste on drip pads shall provide all of the following additional
information:
(1) A list of hazardous
wastes placed or to be placed on each drip pad.
(2) If an exemption is sought to subch. F of
ch. NR 664, as provided by s.
NR 664.0090, detailed plans and an engineering report
describing how s.
NR 664.0090(2) (b) will be
met.
(3) Detailed plans and an
engineering report describing how the drip pad is or will be designed,
constructed, operated and maintained to meet s.
NR 664.0573, including the as-built drawings and
specifications. This submission shall address all of the following items as
specified in s.
NR 664.0571:
(a) The
design characteristics of the drip pad.
(b) The liner system.
(c) The leakage detection system, including
the leak detection system and how it is designed to detect the failure of the
drip pad or the presence of any releases of hazardous waste or accumulated
liquid at the earliest practicable time.
(d) Practices designed to maintain drip
pads.
(e) The associated collection
system.
(f) Control of run-on to
the drip pad.
(g) Control of
run-off from the drip pad.
(h) The
interval at which drippage and other materials will be removed from the
associated collection system and a statement demonstrating that the interval
will be sufficient to prevent overflow onto the drip pad.
(i) Procedures for cleaning the drip pad at
least once every 7 days to ensure the removal of any accumulated residues of
waste or other materials, including but not limited to rinsing, washing with
detergents or other appropriate solvents, or steam cleaning and provisions for
documenting the date, time and cleaning procedure used each time the pad is
cleaned.
(j) Operating practices
and procedures that will be followed to ensure that tracking of hazardous waste
or waste constituents off the drip pad due to activities by personnel or
equipment is minimized.
(k)
Procedures for ensuring that, after removal from the treatment vessel, treated
wood from pressure and non-pressure processes is held on the drip pad until
drippage has ceased, including recordkeeping practices.
(l) Provisions for ensuring that collection
and holding units associated with the run-on and run-off control systems are
emptied or otherwise managed as soon as possible after storms to maintain
design capacity of the system.
(m)
If treatment is carried out on the drip pad, details of the process equipment
used, and the nature and quality of the residuals.
(n) A description of how each drip pad,
including appurtenances for control of run-on and run-off, will be inspected in
order to meet s.
NR 664.0573. This information shall be included in the
inspection plan submitted under s.
NR 670.014(2) (e).
(o) A certification signed by a qualified
professional engineer, stating that the drip pad design meets s.
NR 664.0573(1)
to (6).
(p) A description of how hazardous waste
residues and contaminated materials will be removed from the drip pad at
closure, as required under s.
NR 664.0575(1). For any waste not to be
removed from the drip pad upon closure, the owner or operator shall submit
detailed plans and an engineering report describing how s.
NR 664.0310(1) and
(2) will be complied with. This information
shall be included in the closure plan and, where applicable, the long-term care
plan submitted under s.
NR 670.014(2) (m).
