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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I too would vote for Option A. I have a
somewhat similar grey area scenario:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>In a district cooling system with electric
heating ASHRAE 90.1 prior to the DES memo would have had the baseline be
district cooling with electric heating in step 1. The DES memo document
irrespective of fuel types available on site requires the baseline to be district
cooling and fossil fuel boiler in Step 1. ASHRAE 90.1 says baseline system must
be selected based on the heating source (and floor area and building type etc)
(See G3.1.1). There is a clear conflict here and I have not found documentation
on who supersedes what. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><strong><b><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Minu Agarwal LEED
AP</span></font></b></strong><font color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><strong><b><font size=1 color=navy face=Arial><span
style='font-size:7.5pt;font-family:Arial;color:navy'>Building Physicist, CoSA
Solutions</span></font></b></strong><font color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> </span></font><o:p></o:p></p>
</div>
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face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>David S Eldridge<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 06, 2009 3:38
PM<br>
<b><span style='font-weight:bold'>To:</span></b>
bldg-sim@lists.onebuilding.org; bldg-rate@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] District
Thermal Energy in LEED</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>To make a long story short, I vote Option
A except that a portion of your proposed fuel usage will be low-cost or free
trash, and the baseline will use only coal, per “Exception to G2.4”
in 90.1.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Read on at your own peril…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Paul, I agree with most of what
you’ve said. In the definitions section of 90.1 they do include
coal as a fossil fuel, so the intention of ASHRAE at least was to include coal
among the fuel options. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>I think you have an opportunity in the
selection of the fuel source if the proposed plant is hybrid for coal and
trash. If you did have a coal/trash-fired plant, then would you be
treating the trash portion as on-site “renewable” fuel source in
EAC1 and EAC2? (90.1 “Exception to G2.4”) In that case you
would run both models, but the trash would be free in the proposed design and
the baseline would use coal alone as the standby source. That would be
your gain in overall DES plant performance.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Coal plant efficiency-wise, I think you
are left with using the documented efficiency of your actual plant that you
suggest in Option A, but taking credit only for the cost of the trash.
The default efficiencies presented in the DES memo don’t seem to apply to
baseline boilers, they rely on 90.1 for the baseline plant configuration.
If your plants were instead hybrid with natural gas and trash, then you would
use Chapter 6 for plant efficiencies.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>You don’t mention if you think the
coal plant equipment in place would be more efficient than any other coal
plant. If that isn’t a point of emphasis, I would suggest
taking the cost of trash and calling it a day.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Otherwise you’ll need a CIR to have
the USGBC approve a natural gas baseline boiler plant, but I’m not sure
that the intent of the DES memo is to make a comparison against a typical
boiler plant, or else the memo could have been simplified to say that.
The USGBC seems to have gone out of the way to use fuel source as specified by
90.1 rather than compare against typical.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>On the other hand, maybe they are just
waiting for a CIR to come through to edit the guidance…90.1 does rely on
Section 6.4 for baseline plant efficiencies, assuming that a DES would use the
purchased heating method G1.1.1 which helped lead to this whole guidance
memo in the first place…Good Luck!<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>David<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Tahoma><span style='font-size:
11.0pt;font-family:Tahoma;color:black'>____________________________________________________________________________________________________________________<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=gray face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;color:gray'>David Eldridge, PE<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=gray face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;color:gray'>LEED® AP, HBDP<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Tahoma><span style='font-size:
11.0pt;font-family:Tahoma;color:black'><br>
</span></font><b><font size=2 color="#365f91" face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:#365F91;font-weight:bold'>Grumman/Butkus
Associates</span></font></b><font size=2 color=gray face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:gray'> | </span></font><st1:Street
w:st="on"><st1:address w:st="on"><font size=2 color="#8db3e2" face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:#8DB3E2'>820 Davis Street,
STE 300</span></font></st1:address></st1:Street><font size=2 color="#8db3e2"
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:#8DB3E2'> | <st1:place
w:st="on"><st1:City w:st="on">Evanston</st1:City>, <st1:State w:st="on">IL</st1:State>
<st1:PostalCode w:st="on">60201</st1:PostalCode></st1:place> | Ph: (847)
328-3555, ext 224 | Fax: (847) 328-4550</span></font><font size=2 color=gray
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:gray'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=gray face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;color:gray'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=gray face=Tahoma><span style='font-size:
10.0pt;font-family:Tahoma;color:gray'>Energy Consultants and Design Engineers</span></font><font
size=2 color=black face=Calibri><span style='font-size:11.0pt;font-family:Calibri;
color:black'><br>
</span></font><font size=2 color=black face=Tahoma><span style='font-size:11.0pt;
font-family:Tahoma;color:black'>____________________________________________________________________________________________________________________<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Paul Riemer<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 06, 2009 1:28
PM<br>
<b><span style='font-weight:bold'>To:</span></b> 'Seth P. Spangler';
bldg-sim@lists.onebuilding.org; bldg-rate@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] District
Thermal Energy in LEED<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Seth, Sam, and Eric,
<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Thank you for
weighing in. I should not have used the word 'plant'. So please
allow me to restate my question. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>I know the Step 2
baseline boilers are on-site, but <b><span style='font-weight:bold'>what fuel
type and what efficiency</span></b>?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Appendix G prohibits
fuel switching and I cannot find anything in the DES guide that counters that,
so on one hand I think I need the same fuel type which means options A or B.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>If I chose option A,
I have no savings potential and just distribution losses so no heating side
reason to do Step 2.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>If I chose option B,
I am choosing a code efficiency for a natural draft coal/trash fired hot water
boiler. A piece of equipment so far outside the mainstream, I assert that
any statement of code efficiency is arbitrary.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Appendix G also
requires me to use a boiler efficiency from Ch 6, so on the other hand, I want
to choose gas so I can get a code efficiency which is option C.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>If I choose option
C, the savings will be strongly dependent on the modeled price differential
between coal/trash and natural gas. This is the savings projects really
achieve and why they use coal/trash fired district plants.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>The difference
between these options may well be the maximum allowed differential of 4 EAc1
points.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>I eagerly anticipate
any other responses and the forthcoming DES Guide. (Did I miss the public
comment period?)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Paul Riemer<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='margin-left:.5in'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Seth P.
Spangler [mailto:sspangle@rmf.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, May 06, 2009
12:46 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Paul Riemer;
bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Bldg-sim] District
Thermal Energy in LEED<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>In the Step 2 model for the baseline, you
DON’T use the same district energy system used in the proposed.
Instead, you use on-site boilers of the type specified in ASHRAE 90.1 Tables
G3.1.1A and Tables G3.1.1B.<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Interestingly enough, this is a
contradiction from what is stated in paragraph G3.1.1.1 of 90.1, but USGBC has
clarified their intention in soon to be released updates of the DES
Guide. <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Georgia><span style='font-size:
10.0pt;font-family:Georgia;color:blue'>Seth Spangler, LEED® AP <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Georgia><span style='font-size:
10.0pt;font-family:Georgia;color:blue'>Design Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=3 color=blue face=Georgia><span style='font-size:
12.0pt;font-family:Georgia;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Georgia><span style='font-size:
10.0pt;font-family:Georgia;color:blue'>RMF Engineering, Inc <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Georgia><span style='font-size:
10.0pt;font-family:Georgia;color:blue'>Ph: (843) 971-9639 ext:1497</span></font><font
color=blue><span style='color:blue'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Georgia><span style='font-size:
10.0pt;font-family:Georgia;color:blue'>Fax: (843) 971-9641 <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color=blue face=Georgia><span style='font-size:
10.0pt;font-family:Georgia;color:blue'>sspangle@rmf.com</span></font><font
size=2 face=Georgia><span style='font-size:10.0pt;font-family:Georgia'><o:p></o:p></span></font></p>
</div>
<div>
<div style='margin-left:.5in'>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center>
</span></font></div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Paul Riemer<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, May 05, 2009 4:12
PM<br>
<b><span style='font-weight:bold'>To:</span></b>
bldg-sim@lists.onebuilding.org; bldg-rate@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] District
Thermal Energy in LEED</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Calibri><span
style='font-size:10.0pt;font-family:Calibri;color:#1F497D'>Fellow Modelers,<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Calibri><span
style='font-size:10.0pt;font-family:Calibri;color:#1F497D'>I would greatly
appreciate any answers and comments on formulating a submission and/or CIR.<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Calibri><span
style='font-size:10.0pt;font-family:Calibri;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Calibri><span
style='font-size:10.0pt;font-family:Calibri;color:#1F497D'>I am working on a
LEED project which is heated by steam from a coal fired plant and is subject to
the USGBC's District Thermal Energy document </span></font><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'><a
href="https://www.usgbc.org/ShowFile.aspx?DocumentID=4176">https://www.usgbc.org/ShowFile.aspx?DocumentID=4176</a>.<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>Should the baseline
hot water boiler plant in the Step 2 analysis be:<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>A) a coal fired
boiler with the proposed boiler efficiency since 90.1 does not address coal
fired boilers,<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>B) a natural draft
coal fired hot water boiler with an assumed code efficiency since 90.1 does not
address coal fired boilers,<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>C) a natural draft
gas fired hot water boiler with the code efficiency referenced in 90.1, or<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>D) something else?<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>Remember the metric
is energy cost savings.<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>If you reread it,
replacing the word 'coal' with 'trash', does your answer change?<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>Thank you,<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>Paul Riemer<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'>Dunham<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:.5in'><font size=2 color="#1f497d" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#1F497D'><o:p> </o:p></span></font></p>
</div>
</div>
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face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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