Ill. Admin. Code tit. 35, § 611.606 - Confirmation Samples
a)
Where the results of sampling for antimony, arsenic, asbestos, barium,
beryllium, cadmium, chromium, cyanide, fluoride, mercury, nickel, selenium, or
thallium indicate a level in excess of the MCL, the supplier must collect one
additional sample as soon as possible after the initial sample was taken (but
not to exceed two weeks) at the same sampling point.
b) Where nitrate or nitrite sampling results
indicate a level in excess of the MCL, the supplier must take a confirmation
sample within 24 hours after the supplier's receipt of notification of the
analytical results of the first sample.
1)
Suppliers unable to comply with the 24-hour sampling requirement must
immediately notify the persons served in accordance with Section
611.902
and meet other Tier 1 public notification requirements under Subpart V of this
Part.
2) Suppliers exercising this
option must take and analyze a confirmation sample within two weeks after
notification of the analytical results of the first sample.
c) Averaging rules are specified
in Section
611.609.
The Agency must delete the original or confirmation sample if it determines
that a sampling error occurred, in which case the confirmation sample will
replace the original sample.
BOARD NOTE: Derived from 40 CFR 141.23(f) (2002).
Notes
Amended at 27 Ill. Reg. 16447, effective October 10, 2003
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