<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.6000.16809" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=368500319-18022009><FONT face=Arial size=2>Hello eQuest
user-list,</FONT></SPAN></DIV>
<DIV><SPAN class=368500319-18022009><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=368500319-18022009><FONT face=Arial size=2>I am wondering how
to model laboratory exhaust hoods.</FONT></SPAN></DIV>
<DIV><SPAN class=368500319-18022009><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=368500319-18022009><FONT face=Arial size=2>Please
advise.</FONT></SPAN></DIV>
<DIV><SPAN class=368500319-18022009><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=368500319-18022009><FONT face=Arial
size=2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=368500319-18022009><FONT face=Arial
size=2>Sam</FONT></SPAN></DIV>
<TABLE borderColor=#c0c0c0 cellSpacing=0 cellPadding=0 width=300 bgColor=#ffffff
border=1>
<TBODY>
<TR>
<TD width=300 height=145>
<TABLE cellSpacing=0 cellPadding=5 width=300 border=0>
<TBODY>
<TR>
<TD style="FONT-SIZE: 7pt; FONT-FAMILY: Tahoma" align=middle
width=150><A href="http://www.gdsassociates.com/"><IMG height=65
alt=www.gdsassociates.com
src="http://www.gdsassociates.com/images/gdscardlogo.jpg" width=60
border=0></A><BR><BR><B>GDS Associates, Inc.</B><BR>Engineers and
Consultants</TD>
<TD style="FONT-SIZE: 7pt; FONT-FAMILY: Tahoma" align=middle
width=149><B>SAMUEL M. ALPERT,
CEM</B><BR><B>Engineer</B><BR><BR>1181 Elm Street, Suite
205<BR>Manchester, NH 03101<BR>phone 603.656.0336<BR>fax
603.656.0301<BR>cell 603-296-5308<BR><A
href="mailto:Sam.Alpert@gdsassociates.com">Sam.Alpert@gdsassociates.com</A><BR></FONT></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE><BR>
<DIV> </DIV></BODY></HTML>