Current through August 26, 2024
(1) APPLICABILITY.
(a) This section applies to the manufacture
of cores or molds for use at iron or steel foundries at any facility which is
located in the county of Kenosha, Kewaunee, Manitowoc, Milwaukee, Ozaukee,
Racine, Sheboygan, Washington or Waukesha.
(b) The emission limits of sub. (2) do not
apply to:
1. Iron or steel foundries or core
manufacturing facilities which are located in the county of Kenosha, Milwaukee,
Ozaukee, Racine, Washington or Waukesha which have maximum theoretical
emissions of VOC from core and mold manufacturing of less than 25 tons per
year.
2. Iron or steel foundries or
core manufacturing facilities which are located in the county of Kewaunee,
Manitowoc or Sheboygan which have maximum theoretical emissions of VOC from
core and mold manufacturing of less than 100 tons per year.
(c) Any owner or operator of an
iron or steel foundry or core manufacturing facility having annual emissions
less than the applicability thresholds in par. (b) shall comply with the
recordkeeping requirements of sub. (6) for that facility.
(2) EMISSION AND OPERATIONAL LIMITATIONS. No
owner or operator of a core or mold manufacturing system which produces cores
or molds for use at iron or steel foundries may cause, allow or permit the
operation of the system unless all of the following requirements are met:
(a) The as applied VOC content of each core
or mold coating, when measured using the methods contained in s.
NR 439.06(3) (b), does not exceed any of
the following limits:
1. 30%, by weight,
including water, for core or mold coatings which have an as purchased density
of 15.0 pounds per gallon or greater.
2. 70%, by weight, including water, for core
or mold coatings which have an as purchased density of less than 15.0 pounds
per gallon.
(b) All core
and mold coating storage vessels and containers remain covered whenever product
is not being moved into or out of the vessel or container.
(c) Emissions of the organic gases used in
the catalysis step in the formation of urethane cold box binders are controlled
with an overall efficiency of at least 90%.
(3) COMPLIANCE AND CERTIFICATION DEADLINES.
(a) Final compliance with the requirements of
sub. (2) shall be achieved by May 31, 1995 or upon startup, whichever is
later.
(b) The owner or operator
shall submit certification to the department, by July 1, 1995 or within 90 days
after startup, whichever is later, that the facility is in compliance with the
requirements of sub. (2), as demonstrated by the applicable testing methods of
s.
NR 439.06(3).
(4) EMISSION TESTING. The owner or operator
of a facility which employs a urethane cold box binder shall demonstrate
compliance with the emission rate in sub. (2) (c) using one of the test methods
in s.
NR 439.06(3) (a) prior to the final
compliance date in sub. (3) (a), and at least every 2 years thereafter within
60 days of the anniversary of the initial compliance test.
(5) EMISSION CONTROL SYSTEM MONITORING. The
owner or operator of any facility which uses a wet scrubber to control organic
gas emissions from the catalysis of urethane cold box binders shall
continuously measure and record the pH of the scrubber liquid in addition to
meeting the monitoring requirements of s.
NR 439.055(1) (e).
(6) RECORDKEEPING. Owners or operators of a
facility subject to this section, including those exempt from the requirements
of sub. (2) under sub. (1) (b), shall maintain the following records in
accordance with s.
NR 439.04(1) to (3):
(a) The quantity, in pounds, of each type of
core binder used on an annual basis.
(b) Records of operation variables which are
required to be measured under sub. (5) and s.
NR 439.055(1) (e).
(c) The total quantity, in pounds, of organic
gas used to catalyze the formation of urethane cold box binders on an annual
basis.
(d) The as purchased density
and percent VOC, by weight, of each core or mold coating used at the
facility.
(e) The total quantity,
in pounds or gallons, of each core or mold coating used on a monthly
basis.
(f) The total quantity of
solvent, in pounds, added to each core or mold coating on a monthly
basis.
