Sec. 5.
(a) Windbox
gas VOC emission tests are required under the following conditions:
(1) An initial test as required in section
4(d) or 8 of this rule.
(2) When
there is a change in the control measure since the most recent compliance
test.
(3) When required by the
department or the U.S. EPA.
(b) Compliance with the emission limits in
section 3 of this rule shall be demonstrated according to testing procedures in
326 IAC 3-5 or 326 IAC 3-6-3 and 326 IAC 3-6-5, or Method 25A "Determination of
Total Gaseous Organic Concentration Using a Flame Ionization Analyzer", 40 CFR
60, Appendix A*, as applicable.
(c)
Owners or operators of a sintering process in which the windbox gas exhausts
into the atmosphere through more than one (1) stack shall test each stack for
compliance with the emission limit in section 3 of this rule unless there is a
demonstration that satisfies the commissioner that sampling a lesser number of
stacks yields results comparable to those that will be obtained by testing all
stacks. Owners or operators of a sintering process who intend to submit such
demonstration shall include the demonstration in the protocol required in
section 4 of this rule.
(d) If
sinter burden oil and grease content control is the selected control measure
and the owner or operator chooses to monitor the sinter burden oil and grease
content, the operating parameter shall be determined as follows:
(1) Collect the sinter burden sample at a
location such that the sample is representative of the sinter burden before it
goes through the sintering process.
(2) Collect a sinter burden grab sample for
analysis at least every fifteen (15) minutes for the duration of the test. The
first sample shall be taken at the beginning of the test run. Each sample shall
weigh at least one (1) pound.
(3)
Analyze each sample for oil and grease content using procedures in Method 9071A
"Oil and Grease Extraction Method for Sludge Samples" of U.S. EPA publication
"Test Methods for Evaluating Solid Wastes", SW-846, Volume 1C, Chapter 5,
revised September 1994*; n-hexane shall be used instead of
trichlorotrifluorethane as an extraction reagent.
(4) Estimate oil and grease content as
percent by weight of the sinter burden to three (3) places after the
decimal.
(5) Analyze oil and grease
data outliers using Chauvenet's Criterion at Page I-7 in "Guide to Statistical
Problem Solving" prepared for U.S. EPA, Research Triangle Park, North Carolina,
under contract number 68-02-1505, June 1975* or an alternative acceptable
statistical procedure. Remove outliers that result from any cause other than
the normal characteristics of the sinter burden.
(6) Repeat the procedures in subdivisions (1)
through (4) if the number of representative data is less than ten
(10).
(7) Using representative oil
and grease content data from subdivisions (4) through (6), determine the oil
content average and standard deviation as follows:
Equation 1:
Average oil and grease content, percent (%) by weight = SIGMA
x/n
Equation 2:
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Where: n = Number of samples.
s = Standard deviation of oil and grease content percent by
weight.
x = Percent oil and grease in each sample.
(8) Calculate oil and grease content as
percent by weight sinter burden as follows:
Equation 3:
Oil and grease content (percent (%) by weight) = average oil
content (%) + one (1) standard deviation (%)
(9) Calculate average sinter burden
throughput during the test in tons.
(10) Calculate oil and grease content as an
operating parameter in pounds as follows:
Equation 4:
Operating parameter oil content (pounds) = (oil and grease
content (percent (%) by weight from Equation 3) ×
1/100) ×
average sinter burden throughput (tons) × 2,000 pounds/ton
(11) If the operating parameter in
Equation 4 corresponds to a VOC emission rate in pounds VOC per ton sinter
produced that is less than the VOC emission rates in pounds VOC per ton sinter
produced in section 3 of this rule, calculate the operating parameter to
represent the appropriate VOC emission rates in pounds VOC per ton sinter
produced in section 3 of this rule and explain the basis as provided in section
4(d)(4)(E) of this rule.
(e) An owner or operator may request approval
of an alternative oil and grease sampling and analysis procedure by submitting
to the department a written request. The request shall include all of the
following:
(1) Sampling procedure that
includes all of the following:
(A) A list of
raw materials that will be sampled.
(B) Sampling equipment to be used.
(C) Sampling location.
(D) Number of samples to be
collected.
(E) Sampling
frequency.
(F) Amount of sample to
be collected.
(2)
Analytical procedure that includes all of the following:
(A) Sample preparation procedure.
(B) Analytical equipment.
(C) Analysis procedure.
(D) Reagents to be used.
(E) Accuracy and precision of
measurements.
(F) Procedure to
identify unrepresentative oil and grease content values.
(G) Expected variation in pounds in the oil
and grease content value as determined by subsection (d)(10).
*These documents are incorporated by reference. Copies are
available for review and copying at the Indiana Department of Environmental
Management, Office of Air Quality, Indiana Government Center-North, Tenth
Floor, 100 North Senate Avenue, Indianapolis, Indiana 46204.
