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  <FDSYS>
    <CFRTITLE>40</CFRTITLE>
    <CFRTITLETEXT>Protection of Environment</CFRTITLETEXT>
    <VOL>6</VOL>
    <DATE>2005-07-01</DATE>
    <ORIGINALDATE>2005-07-01</ORIGINALDATE>
    <COVERONLY>false</COVERONLY>
    <TITLE>How do I convert my 1-hour arithmetic averages into appropriate averaging times and units?</TITLE>
    <GRANULENUM>60.1755</GRANULENUM>
    <HEADING>Section 60.1755</HEADING>
    <ANCESTORS>
      <PARENT HEADING="Title 40" SEQ="5">Protection of Environment</PARENT>
      <PARENT HEADING="CHAPTER I" SEQ="4">ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)</PARENT>
      <PARENT HEADING="SUBCHAPTER C" SEQ="3">AIR PROGRAMS (CONTINUED)</PARENT>
      <PARENT HEADING="PART 60" SEQ="2">STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES</PARENT>
      <PARENT HEADING="Subpart BBBB" SEQ="1">Emission Guidelines and Compliance Times for Small Municipal Waste Combustion Units Constructed on or Before August 30, 1999</PARENT>
      <PARENT HEADING="" SEQ="0">Model Rule-Continuous Emission Monitoring</PARENT>
    </ANCESTORS>
  </FDSYS>
  <SECTION>
    <SECTNO>§ 60.1755</SECTNO>
    <SUBJECT>How do I convert my 1-hour arithmetic averages into appropriate averaging times and units?</SUBJECT>
    <P>(a) Use the equation in § 60.1935(a) to calculate emissions at 7 percent oxygen.</P>
    <P>(b) Use EPA Reference Method 19 in appendix A of this part, section 4.3, to calculate the daily geometric average concentrations of sulfur dioxide emissions. If you are monitoring the percent reduction of sulfur dioxide, use EPA Reference Method 19 in appendix A of this part, section 5.4, to determine the daily geometric average percent reduction of potential sulfur dioxide emissions.</P>
    <P>(c) If you operate a Class I municipal waste combustion unit, use EPA Reference Method 19 in appendix A of this part, section 4.1, to calculate the daily arithmetic average for concentrations of nitrogen oxides.</P>
    <P>(d) Use EPA Reference Method 19 in appendix A of this part, section 4.1, to calculate the 4-hour or 24-hour daily block averages (as applicable) for concentrations of carbon monoxide.</P>
  </SECTION>
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