[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: PCBs
Chun Yi,
I have quit using chemfinder for CAS numbers due to errors.
I recommend changing the CAS number to the correct one. I will forward
this change to the emission factor group.
thanks
anne
"Wu, Chun Yi"
<Chun.Yi.Wu@stat
e.mn.us> To
Anne Pope/RTP/USEPA/US@EPA, "Wu,
01/10/2007 12:25 Chun Yi" <Chun.Yi.Wu@state.mn.us>
PM cc
Airtoxics
<airtoxics@great-lakes.net>,
owner-airtoxics@great-lakes.net
Subject
RE: PCBs
Anne,
Happy New Year to you too!
The CAS number, 2050-68-2, for Dichlorobiphenyl is from FIRE. It is
also indicated in http://chemfinder.cambridgesoft.com. If you think a
CAS number of 25512-42-9 is more appropriate, please change the CAS
number in FIRE too.
Chun Yi
-----Original Message-----
From: owner-airtoxics@great-lakes.net
[mailto:owner-airtoxics@great-lakes.net] On Behalf Of
Pope.Anne@epamail.epa.gov
Sent: Wednesday, January 10, 2007 7:06 AM
To: Wu, Chun Yi
Cc: Airtoxics; owner-airtoxics@great-lakes.net
Subject: RE: PCBs
Chun,
Happy New Year.
I am adding the HAPS your sent me to the NEI pollutant code list and
have some questions for you. See the table below. Which pollutant did
you mean to add? You used the CAS # 2050-68-2 which is for
4,4'Dichlorobiphenyl , But you identified the PCB as dichlorobiphenyl
which has a CAS number of 25512-42-9.
thanks
anne
Systematic Name
EPA Registry Name
Classification
CAS Number
TSN
IC
TV
EPA ID
Compare?
1,1'-Biphenyl, dichloro-
Dichlorobiphenyl
Chemical
25512-42-9
|------|
| [ ] |
|------|
1,1'-Biphenyl, 4,4'-dichloro-
4,4'-Dichlorobiphenyl
Chemical
2050-68-2
|------|
| [ ] |
|------|
"Wu, Chun Yi"
<Chun.Yi.Wu@stat
e.mn.us> To
Sent by: Airtoxics
owner-airtoxics@ <airtoxics@great-lakes.net>
great-lakes.net cc
Subject
08/10/2006 05:34 RE: PCBs
PM
I think it is better to have new codes in RAPIDS since the toxicity
profile for these congeners may be widely different.
The suggested RAPIDS codes with the same convention as PCDDs and PCDFs
are:
CAS# Pollutant Suggested RAPIDS
codes
7012-37-5 2,4,4'-Trichlorobiphenyl TRICB,244
2051-60-7 2-Monochlorobiphenyl MONOCB,2
2051-24-3 Decachlorobiphenyl DECACB
2050-68-2 Dichlorobiphenyl DICB,TOT
28655-71-2 Heptachlorobiphenyls, Total HPCB,TOT
26601-64-9 Hexachlorobiphenyls, Total HXCB,TOT
25429-29-2 Pentachlorobiphenyls, Total PECB,TOT
26914-33-0 Tetrachlorobiphenyls, Total TCB,TOT
To include emissions of these compounds in the repository database for
MN we need to have following steps:
1. Create new RAPIDS codes
2. Enter state or generic emission factors for them
3. Calculate emissions
4. Export data from RAPIDS
5. Import data to the repository
My question is should we do all these for the 2002 EI or we start to
include them in the 2005 EI?
Chun Yi
-----Original Message-----
From: owner-airtoxics@great-lakes.net
[mailto:owner-airtoxics@great-lakes.net] On Behalf Of Jon Dettling
Sent: Thursday, August 10, 2006 2:42 PM
To: 'Airtoxics'
Subject: RE: PCBs
Chun Yi,
I think these are certainly emissions that fall within the scope
of our target list and so we should take what steps are necessary
to include them. It seems to me there are two ways to go about
this:
-convert these emission factors to total PCBs and estimate
emissions on that basis
-include the appropriate pollutant codes and map them to total
PCBs for reporting
My guess is that states may differ on how they’d like to do this.
I don’t see a reason we can’t make the modifications to
accommodate those who would like to do the second by adding RAPIDS
codes for the congener groups to the materials table and map them
to total PCBs for reporting. My guess is that you fall in this
group. Would you like to take on the task of recommending a set of
material codes for the group to consider?
Jon
______________________
Jon Dettling
Great Lakes Commission
734-971-9135
dettling@glc.org
From: owner-airtoxics@great-lakes.net
[mailto:owner-airtoxics@great-lakes.net] On Behalf Of Wu, Chun Yi
Sent: Thursday, August 10, 2006 12:51 PM
To: Airtoxics
Subject: RE: PCBs
-----Original Message-----
From: Wu, Chun Yi
Sent: Thursday, August 10, 2006 11:49 AM
To: Airtoxics
Subject: RE: PCBs
The emission factors for PCBs are attached. All these
factors were created after FIRE6.23 with an EPA date of
9/1/03. All these emission factors are for External
Combustion Boilers that burn Wood/Bark Waste.
Chun Yi
-----Original Message-----
From: owner-airtoxics@great-lakes.net
[mailto:owner-airtoxics@great-lakes.net] On Behalf Of
Cabrera-Rivera, Orlando
Sent: Thursday, August 10, 2006 9:32 AM
To: Wu, Chun Yi; Airtoxics
Subject: RE: PCBs
Chun Yi,
Thanks for the information. I believe that it is worth
looking into this. We may want to find out a few
things. 1 What are the SCCs associated with these
factors?, 2) Do factors exists for total PCBs for the
same SCCs? 3) Do any of the states collect data on
these emissions or these processes?
Orlando
From: owner-airtoxics@great-lakes.net
[mailto:owner-airtoxics@great-lakes.net] On
Behalf Of Wu, Chun Yi
Sent: Thursday, August 10, 2006 8:20 AM
To: Airtoxics
Subject: PCBs
FIRE contains emission factors for the following
pollutants, PCB congeners. However, RAPIDS does
not have material cods for them. Do we want to
create new material codes?
CAS# Pollutant
7012-37-5
2,4,4-Trichlorobiphenyl
2051-24-3 Decachlorobiphenyl
2050-68-2 Dichlorobiphenyl
28655-71-2 Heptachlorobiphenyls,
Total
26601-64-9 Hexachlorobiphenyls,
Total
25429-29-2 Pentachlorobiphenyls,
Total
26914-33-0 Tetrachlorobiphenyls,
Total
Chun Yi
j*+uyjG"wfzܮH
敩wNryزXvfj:vVzɷrjw˱mډ˞nxںrٝz*tض
敩wXϊ'r
h',hםo+axjjڑ+bs^
+m+yejGS칻 &~&+-ݙݢj 歕 w+aiۧrybrȧܨ*.g 6.n7Xyޭꮊ.m+yejG+-1?j*)
- References:
- RE: PCBs
- From: "Wu, Chun Yi" <Chun.Yi.Wu@state.mn.us>