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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>As stated previously, we are having issues with the
ultrapure water coming back into spec. Currently we are operating at 15.4
megohm resistivity (18.2 is theoretical, where we usually operate). TOC
is operating at 1ppB, while we normally operate at 225 ppT. This means
that we have slightly higher organic levels in the water and quite a few more
ionic impurities. The quality is continually improving, and we will let
you know when the quality is back where it belongs.<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'>It is perfectly acceptable to perform non-sensitive
operations with this water. <b><span style='font-weight:bold'>FOR THIS
REASON, WE ARE NOW OPENING ALL ACID HOODS FOR <st1:place w:st="on">NORMAL</st1:place>
OPERATION.</span></b> The facility is now fully operational, with the
understanding that our water quality is not yet back to our normal, specified
levels.<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'>Thank you for your understanding and cooperation as we work
through this issue.<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'>John Weaver<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=MsoAutoSig><b><i><font size=2 face="Times New Roman"><span
style='font-size:10.0pt;font-weight:bold;font-style:italic'>John R. Weaver<o:p></o:p></span></font></i></b></p>
<p class=MsoAutoSig><b><i><font size=2 face="Times New Roman"><span
style='font-size:10.0pt;font-weight:bold;font-style:italic'>Facility Manager<o:p></o:p></span></font></i></b></p>
<p class=MsoAutoSig><st1:place w:st="on"><st1:PlaceName w:st="on"><b><i><font
size=2 face="Times New Roman"><span style='font-size:10.0pt;font-weight:bold;
font-style:italic'>Birck</span></font></i></b></st1:PlaceName><b><i><font
size=2><span style='font-size:10.0pt;font-weight:bold;font-style:italic'> <st1:PlaceName
w:st="on">Nanotechnology</st1:PlaceName> <st1:PlaceType w:st="on">Center</st1:PlaceType></span></font></i></b></st1:place><b><i><font
size=2><span style='font-size:10.0pt;font-weight:bold;font-style:italic'><o:p></o:p></span></font></i></b></p>
<p class=MsoAutoSig><st1:place w:st="on"><st1:PlaceName w:st="on"><b><i><font
size=2 face="Times New Roman"><span style='font-size:10.0pt;font-weight:bold;
font-style:italic'>Purdue</span></font></i></b></st1:PlaceName><b><i><font
size=2><span style='font-size:10.0pt;font-weight:bold;font-style:italic'> <st1:PlaceType
w:st="on">University</st1:PlaceType></span></font></i></b></st1:place><b><i><font
size=2><span style='font-size:10.0pt;font-weight:bold;font-style:italic'><o:p></o:p></span></font></i></b></p>
<p class=MsoAutoSig><b><i><font size=2 face="Times New Roman"><span
style='font-size:10.0pt;font-weight:bold;font-style:italic'>(765) 494-5494<o:p></o:p></span></font></i></b></p>
<p class=MsoAutoSig><b><i><font size=2 face="Times New Roman"><span
style='font-size:10.0pt;font-weight:bold;font-style:italic'>jrweaver@purdue.edu<o:p></o:p></span></font></i></b></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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