[Code of Federal Regulations]
[Title 40, Volume 14]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR75.37]
[Page 274-275]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 75--CONTINUOUS EMISSION MONITORING--Table of Contents
Subpart D--Missing Data Substitution Procedures
Sec. 75.37 Missing data procedures for moisture.
(a) The owner or operator of a unit with a continuous moisture
monitoring system shall substitute for missing moisture data using the
procedures of this section.
(b) Where no prior quality-assured moisture data exist, substitute
the minimum potential moisture percentage, from section 2.1.5 of
appendix A to this part, except when Equation 19-3, 19-4 or 19-8 in
Method 19 in appendix A to part 60 of this chapter is used to determine
NOX emission rate. If Equation 19-3, 19-4 or 19-8 in Method
19 in appendix A to part 60 of this chapter is used to determine
NOX emission rate, substitute the maximum potential moisture
percentage, as specified in section 2.1.6 of appendix A to this part.
(c) During the first 720 quality-assured monitor operating hours
following initial certification at a particular unit or stack location
(i.e., the date and time at which quality-assured data begins to be
recorded by a moisture monitoring system at that location), the owner or
operator shall provide substitute data for moisture according to
Sec. 75.31(b).
(d) Upon completion of the first 720 quality-assured monitor
operating hours following initial certification, the owner or operator
shall provide substitute data for moisture as follows:
(1) Unless Equation 19-3, 19-4 or 19-8 in Method 19 in appendix A to
part 60 of this chapter is used to determine NOX emission
rate, follow the missing data procedures in Sec. 75.33(b), except that
the term ``moisture percentage'' shall apply rather than
``SO2 concentration;'' the term ``moisture monitoring
system'' shall apply rather than the term ``SO2 pollutant
concentration monitor;'' the term ``substitute the lesser of'' shall
apply rather than ``substitute the greater of;'' the terms ``minimum
hourly moisture percentage'' and ``minimum potential moisture
percentage, as determined under section 2.1.5 of appendix A to this
part''
[[Page 275]]
shall apply rather than, respectively, the terms ``maximum hourly
SO2 concentration'' and ``maximum potential SO2
concentration, as determined under section 2.1.1.1 of appendix A to this
part;'' and the terms ``10th percentile'' and ``5th percentile'' shall
apply rather than, respectively, the terms ``90th percentile'' and
``95th percentile'' (see Table 1 of Sec. 75.33).
(2) When Equation 19-3, 19-4 or 19-8 in Method 19 in appendix A to
part 60 of this chapter is used to determine NOX emission
rate:
(i) Provided that none of the following equations is used to
determine SO2 emissions, CO2 emissions or heat
input: Equation F-2, F-14b, F-16, F-17, or F-18 in appendix F to this
part, or Equation 19-5 or 19-9 in Method 19 in appendix A to part 60 of
this chapter, use the missing data procedures in Sec. 75.33(b), except
that the term ``moisture percentage'' shall apply rather than
``SO2 concentration,'' the term ``moisture monitoring
system'' shall apply rather than ``SO2 pollutant
concentration monitor,'' and the term ``maximum potential moisture
percentage, as defined in section 2.1.6 of appendix A to this part''
shall apply, rather than ``maximum potential SO2
concentration;'' or
(ii) If any of the following equations is used to determine
SO2 emissions, CO2 emissions or heat input:
Equation F-2, F-14b, F-16, F-17, or F-18 in appendix F to this part, or
Equation 19-5 or 19-9 in Method 19 in appendix A to part 60 of this
chapter, the owner or operator shall petition the Administrator under
Sec. 75.66(l) for permission to use an alternative moisture missing data
procedure.
[64 FR 28604, May 26, 1999, as amended at 67 FR 40439, June 12, 2002]