<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40">

<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=ProgId content=Word.Document>
<meta name=Generator content="Microsoft Word 11">
<meta name=Originator content="Microsoft Word 11">
<link rel=File-List href="cid:filelist.xml@01CB3EE3.953C0CB0">
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
 name="address"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
 name="PostalCode"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
 name="Street"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
 name="place"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
 name="State"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
 name="City"/>
<!--[if gte mso 9]><xml>
 <o:OfficeDocumentSettings>
  <o:DoNotRelyOnCSS/>
 </o:OfficeDocumentSettings>
</xml><![endif]--><!--[if gte mso 9]><xml>
 <w:WordDocument>
  <w:Zoom>90</w:Zoom>
  <w:DontDisplayPageBoundaries/>
  <w:DisplayBackgroundShape/>
  <w:SpellingState>Clean</w:SpellingState>
  <w:GrammarState>Clean</w:GrammarState>
  <w:DocumentKind>DocumentEmail</w:DocumentKind>
  <w:EnvelopeVis/>
  <w:PunctuationKerning/>
  <w:ValidateAgainstSchemas/>
  <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid>
  <w:IgnoreMixedContent>false</w:IgnoreMixedContent>
  <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText>
  <w:Compatibility>
   <w:BreakWrappedTables/>
   <w:SnapToGridInCell/>
   <w:WrapTextWithPunct/>
   <w:UseAsianBreakRules/>
   <w:DontGrowAutofit/>
  </w:Compatibility>
  <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel>
 </w:WordDocument>
</xml><![endif]--><!--[if gte mso 9]><xml>
 <w:LatentStyles DefLockedState="false" LatentStyleCount="156">
 </w:LatentStyles>
</xml><![endif]--><!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
 /* Font Definitions */
 @font-face
        {font-family:"Franklin Gothic Medium Cond";
        panose-1:2 11 6 6 3 4 2 2 2 4;
        mso-font-charset:0;
        mso-generic-font-family:swiss;
        mso-font-pitch:variable;
        mso-font-signature:647 0 0 0 159 0;}
@font-face
        {font-family:Webdings;
        panose-1:5 3 1 2 1 5 9 6 7 3;
        mso-font-charset:2;
        mso-generic-font-family:roman;
        mso-font-pitch:variable;
        mso-font-signature:0 268435456 0 0 -2147483648 0;}
 /* Style Definitions */
 p.MsoNormal, li.MsoNormal, div.MsoNormal
        {mso-style-parent:"";
        margin:0in;
        margin-bottom:.0001pt;
        mso-pagination:widow-orphan;
        font-size:12.0pt;
        font-family:"Times New Roman";
        mso-fareast-font-family:"Times New Roman";}
a:link, span.MsoHyperlink
        {color:blue;
        text-decoration:underline;
        text-underline:single;}
a:visited, span.MsoHyperlinkFollowed
        {color:purple;
        text-decoration:underline;
        text-underline:single;}
span.EmailStyle17
        {mso-style-type:personal-compose;
        mso-style-noshow:yes;
        mso-ansi-font-size:10.0pt;
        mso-bidi-font-size:10.0pt;
        font-family:Arial;
        mso-ascii-font-family:Arial;
        mso-hansi-font-family:Arial;
        mso-bidi-font-family:Arial;
        color:windowtext;}
span.SpellE
        {mso-style-name:"";
        mso-spl-e:yes;}
span.GramE
        {mso-style-name:"";
        mso-gram-e:yes;}
@page Section1
        {size:8.5in 11.0in;
        margin:1.0in 1.25in 1.0in 1.25in;
        mso-header-margin:.5in;
        mso-footer-margin:.5in;
        mso-paper-source:0;}
div.Section1
        {page:Section1;}
-->
</style>
<!--[if gte mso 10]>
<style>
 /* Style Definitions */ 
 table.MsoNormalTable
        {mso-style-name:"Table Normal";
        mso-tstyle-rowband-size:0;
        mso-tstyle-colband-size:0;
        mso-style-noshow:yes;
        mso-style-parent:"";
        mso-padding-alt:0in 5.4pt 0in 5.4pt;
        mso-para-margin:0in;
        mso-para-margin-bottom:.0001pt;
        mso-pagination:widow-orphan;
        font-size:10.0pt;
        font-family:"Times New Roman";
        mso-ansi-language:#0400;
        mso-fareast-language:#0400;
        mso-bidi-language:#0400;}
</style>
<![endif]-->
</head>

<body lang=EN-US link=blue vlink=purple style='tab-interval:.5in'>

<div class=Section1>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>For baseline HVAC system type, ASHRAE 90.1-2007 has the
following exception (G3.1.1 d.):<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>“For laboratory spaces with a minimum of 5000 <span
class=SpellE>cfm</span> of exhaust, use system type 5 or 7 that reduce the
exhaust or makeup air volume to 50% of design values during unoccupied periods.”<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Similarly, “systems serving laboratories with exhaust
rates of 5000 <span class=SpellE>cfm</span> or greater” are <span
class=GramE>excepted</span> from the baseline energy recovery requirement
(G3.1.2.10 h.).<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When applying this exception, is it 5000 <span class=SpellE>cfm</span>
per space? <span class=GramE>Per floor?</span> <span class=GramE>Per building?</span>
<span class=GramE>Per system?</span><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks,<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Bill<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>

<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><b
  style='mso-bidi-font-weight:normal'><font size=2 color=black
  face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
  "Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
  normal;mso-no-proof:yes'>William</span></font></b></st1:City><b
 style='mso-bidi-font-weight:normal'><font size=2 color=black
 face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
 "Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
 normal;mso-no-proof:yes'> <st1:State w:st="on">Bishop</st1:State>, <st1:State
 w:st="on">PE</st1:State></span></font></b></st1:place><b style='mso-bidi-font-weight:
normal'><font size=2 color=black face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond";color:black;
font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'>, BEMP, LEED<sup>®</sup>
AP </span></font></b><b style='mso-bidi-font-weight:normal'><font size=2
color="#006600" face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;
font-family:"Franklin Gothic Medium Cond";color:#006600;font-weight:bold;
mso-bidi-font-weight:normal;mso-no-proof:yes'>|</span></font></b><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'> </span></font></b><b style='mso-bidi-font-weight:
normal'><font size=2 color=black face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:"Franklin Gothic Medium Cond";
color:black;font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'>Pathfinder
Engineers & Architects LLP</span></font></b><b><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-no-proof:yes'><o:p></o:p></span></font></b></p>

<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>Mechanical Engineer<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
5.0pt;font-family:Arial;color:black;mso-no-proof:yes'><o:p> </o:p></span></font></p>

<p class=MsoNormal><st1:address
style="BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x; BACKGROUND-POSITION: left bottom"
tabIndex="0" w:st="on"><st1:Street w:st="on"><font size=1 face=Arial><span
  style='font-size:9.0pt;font-family:Arial;mso-no-proof:yes'>134 South Fitzhugh
  Street</span></font></st1:Street><font size=1><span style='font-size:9.0pt;
 mso-no-proof:yes'><br>
 </span></font><st1:City w:st="on"><font size=1 face=Arial><span
  style='font-size:9.0pt;font-family:Arial;mso-no-proof:yes'>Rochester</span></font></st1:City><font
 size=1 face=Arial><span style='font-size:9.0pt;font-family:Arial;mso-no-proof:
 yes'>, <st1:State w:st="on">NY</st1:State> <st1:PostalCode w:st="on">14608</st1:PostalCode></span></font></st1:address><font
size=1><span style='font-size:9.0pt;mso-no-proof:yes'><br>
</span></font><font size=1 face=Arial><span style='font-size:9.0pt;font-family:
Arial;mso-no-proof:yes'>T: (585) 325-6004 <font color=black><span
style='color:black'>Ext. 114</span></font></span></font><font size=1><span
style='font-size:9.0pt;mso-no-proof:yes'><br>
</span></font><font size=1 face=Arial><span style='font-size:9.0pt;font-family:
Arial;mso-no-proof:yes'>F: (585) 325-6005</span></font><font size=1
color=black face=Arial><span style='font-size:9.0pt;mso-bidi-font-size:12.0pt;
font-family:Arial;color:black;mso-no-proof:yes'><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>wbishop@pathfinder-ea.com<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:black;mso-no-proof:
yes'>www.pathfinder-ea.com</span></font><span style='mso-no-proof:yes'><o:p></o:p></span></p>

<p class=MsoNormal><font size=5 color=green face=Webdings><span
style='font-size:18.0pt;font-family:Webdings;mso-bidi-font-family:Webdings;
color:green;mso-no-proof:yes'>P</span></font><font color=green><span
style='color:green;mso-no-proof:yes'> </span></font><font size=1 color=green><span
style='font-size:7.5pt;color:green;mso-no-proof:yes'>Sustainability –
less is more.</span></font><font color=green><span style='color:green'><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>

</div>

</body>

</html>