25 Pa. Code § 250.4 - Limits related to PQLs
(a) The PQLs
shall be selected from the PQLs or EQLs specified by the EPA in the most
current version of the EPA's drinking water or solid waste analytical
methods.
(b) For regulated
substances when PQLs or EQLs set by the EPA exceed an MCL or HAL or have a
health risk that is greater (less protective) than the risk levels set in
sections 303(c) and 304(b) and (c) of the act (35 P.S. §§
6026.303(c) and
6026.304(b) and (c)) and for
substances when no EQL has been established by the EPA, the PQL shall be
established by the methodologies in paragraph (1) or (2).
(1) A level set by multiplying 3.18 by the
published method detection limit (MDL) of the most recently approved EPA
methodology.
(2) A level set by
multiplying 3.18 by the instrument-specific MDL. If multiple instruments are
used, then the PQL is set by averaging the instrument-specific MDLs and
multiplying that value by 3.18.
(c) For regulated substances which have no
limits related to PQLs identified in subsection (b)(1) or (2), a person shall
demonstrate attainment under the site-specific standard or the background
standard.
(d) When a minimum
threshold MSC is used as a Statewide health standard, the minimum threshold MSC
is the Statewide health standard regardless of whether it is higher or lower
than a quantitation limit established by this section.
(e) Nothing in this section restricts the
selection of valid and generally accepted methods to be used to analyze samples
of environmental media.
Notes
The provisions of this § 250.4 amended under sections 104(a) and 303(a) of the Land Recycling and Environmental Remediation Standards Act (35 P.S. §§ 6026.104(a) and 6026.303(a)); and section 1920-A of The Administrative Code of 1929 (71 P.S. § 510-20).
This section cited in 25 Pa. Code § 250.701 (relating to scope).
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