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<H1>PUBLIC SUBMISSION</H1>
</TD><TD width="5%" class="aligntd outline"><B>As of: </B>August 30, 2010<BR>
<B>Tracking No. </B>80b37841<BR>
<B>Comments Due: </B>September 08, 2010</TD>
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<B>Docket: </B><A title="The docket ID is EPA-HQ-OAR-2010-0295" target="_top" href="http://www.regulations.gov/search/Regs/home.html#docketDetail?R=EPA-HQ-OAR-2010-0295">EPA-HQ-OAR-2010-0295</A>
<BR>NSPS for Stationary Compression Ignition Engines - Amendments
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<B>Comment On: </B><A title="This comment was submitted on the document with ID EPA-HQ-OAR-2010-0295-0001" target="_top" href="http://www.regulations.gov/search/Regs/home.html#documentDetail?D=EPA-HQ-OAR-2010-0295-0001">EPA-HQ-OAR-2010-0295-0001</A>
<BR>Standards of Performance for Stationary Compression Ignition and Spark Ignition Internal Combustion Engines</P>
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<B>Document: </B><A target="_top" title="The document ID for this comment is EPA-HQ-OAR-2010-0295-0034" href="http://www.regulations.gov/search/Regs/home.html#documentDetail?D=EPA-HQ-OAR-2010-0295-0034">EPA-HQ-OAR-2010-0295-0034</A>
<BR>Comment submitted by D. Meierhenry</P>
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<H2 class="aligncenter debug">Submitter Information</H2>
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<H2 class="aligncenter debug">General Comment</H2>
<P class="alignleft debug">Docket EPA-HQ-OAR-2010-0295<BR>
<BR>Standards of Performance for Stationary Compressions Ignition and Spark Ignition Internal Combustion Engines.<BR>
<BR>Dear Sir or Madam:<BR>
<BR>Thank-you for the opportunity to comment on the proposed performance standards for stationary compression and spark ignition engines.<BR>
<BR>1.  60.4211(f)(4) and 60.4243(d)(4) specify compliance requirements for emergency CI and SI engines, respectively. These sections both state.  “The engine may not be operated for more than 30 minutes prior to the time when the emergency condition is expected to occur, and the engine operation must be terminated immediately after the facility is notified that the emergency condition is no longer imminent.”  I disagree with the need for these limitations and foresee  arguments over the meaning of “immediately”, and why 30 minutes is an acceptable period but 31 minutes is not, and what criteria are used to determine “when the emergency condition is expected to occur”, and the criteria for determining “that the emergency condition is no longer imminent”.  Although I have no proof, I do not believe the majority of sources are interested in operating their emergency generators any longer than necessary.  I suggest the time limits be deleted (or retained only as guidelines) and the EPA specify the operating record must clearly indicate when and why a  generator was operated.  <BR> <BR>2.  In the definition of emergency stationary internal combustion engine in 60.4219, the reference to 60.4211(e) should be changed to 60.4211(f).<BR>
<BR>I appreciate your consideration of these comments.<BR>
<BR>David Meierhenry<BR>Sioux City, IA<BR>dmhen@cableone.net</P>
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