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<p class=MsoNormal>I appreciate the answer to the following question:<o:p></o:p></p>
<p class=MsoNormal>With respect to LEED v3 commercial interior EA credit 3.1, how
do we approach the existing building HVAC system serving the entire building
including the tenant area seeking LEED certification. Shall we include only new
HVAC equipment serving the tenant area and consider the main system as
“EXISTING” in the energy modeling or we need to include the
building main system (e.g. chillers, pumps, air handling units). In latter
case, the entire building needs to be considered in the energy modeling. Since
the building main system may be somewhat old and not very energy efficient, it
may adversely affect the proposed energy usage. In addition, in case the tenant
improvement does not utilize any new AC equipment (for instance only VAV
boxes), what needs to be included in the energy modeling to prove the
compliance with 2007 ASHRAE 90.1 or 2008 Title-24. <o:p></o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal><b><span style='font-size:18.0pt;font-family:"\0027Hoefler Text\0027";
color:#1F6E29'>Bruce Rohani, P.E., LEED AP, CPMP</span></b><span
style='font-size:18.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:18.0pt;font-family:"\0027Hoefler Text\0027";
color:#125418'>Senior Project Manager</span><span style='font-size:18.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:18.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:19.0pt;font-family:"Impact","sans-serif";
color:#38543C'>Davidovich & Associates</span><span style='font-size:8.5pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.5pt;font-family:Nadeem;color:#1C5423'>M</span><span
style='font-size:11.5pt;font-family:Nadeem;color:#16541B'>echanical,
Electrical, Plumbing,</span><span style='font-size:16.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.5pt;font-family:Nadeem;color:#16541B'>Fire
Alarm, Fire Sprinklers, Lighting, </span><span style='font-size:16.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.5pt;font-family:Nadeem;color:#16541B'>Dry
Utilities and LEED Energy Conservation</span><span style='font-size:16.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.5pt;font-family:Nadeem;color:#16541B'>Consulting
Engineers</span><span style='font-size:16.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.5pt;font-family:Nadeem;color:#821538'>Tel:
310-348-5101 x 203</span><span style='font-size:16.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.5pt;font-family:Nadeem;color:#821538'>Fax:
310-348-5102</span><span style='font-size:11.5pt;font-family:Nadeem;color:#821538'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.5pt;font-family:Nadeem;color:#821538'>Cell:
310-877-2838 </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif";
color:#0000CC'>Email:</span><span style='font-size:11.5pt;font-family:"Times New Roman","serif";
color:#0000CC'> <a href="mailto:E-vladimir@davidovich.com"><span
style='color:#0000CC'>bruce@davidovich.com</span></a></span><span
style='font-family:"Times New Roman","serif";color:#0000CC'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.5pt;font-family:Nadeem;color:#0000CC'>Website:
<a href="http://www.davidovich.com/"><span style='color:#0000CC'>www.davidovich.com</span></a></span><span
style='font-size:16.0pt'><o:p></o:p></span></p>
<p class=MsoNormal style='text-align:justify'><i><span style='color:#007E0D'>The
information contained in this message may be privileged and confidential </span></i><span
style='font-size:12.0pt'><o:p></o:p></span></p>
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<p class=MsoNormal style='text-align:justify'><i><span style='color:#007E0D'>by
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