The following performance criteria are applicable to all quarries
located within a water quality protection area.
(1) Discharges from quarries shall meet the following
effluent limitations.
Attached Graphic
(2) Discharges from quarries resulting from a rainfall
event greater than the 25-year, 24-hour rainfall event are not subject
to effluent limitations in paragraph (1) of this section.
(3) Discharges from quarries shall be monitored as
follows.
Attached Graphic
(4) Results of analysis for monitoring conducted as
specified in §311.75(3) of this title (relating to Permit Application
Requirements) shall be submitted monthly on approved self-report forms.
Monitoring and reporting records, including strip charts and records
of calibration and maintenance, shall be retained on site, or shall
be readily available for review by a commission representative for
a period of three years from the date of the record or sample, measurement,
or report.
(5) The permittee shall install a permanent rain gauge
at the plant site and keep daily records of rainfall and the resulting
flow. Monitoring records shall be retained on site, or shall be readily
available for review by a commission representative for a period of
three years from the date of the record.
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