Document ID: EPA-HQ-OAR-2003-0051-0962
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2023-08-16T04:00Z

From: 
Kaplan, Mary <mary.kaplan@aecom.com>
Sent:
Thursday, December 24, 2020 9:41 AM
To: 
Jones, DonnaLee <jones.donnalee@epa.gov>; Raymond, Gabrielle <graymond@rti.org>
Cc:
David Ailor (dailor@accci.org) <dailor@accci.org>; jeffrey.knight@pillsburylaw.com; Allen Dittenhoefer (adittenhoefer@montrose-env.com) <adittenhoefer@montrose-env.com>; 'Katie.Kistler@aksteel.com' <Katie.Kistler@aksteel.com>
Subject: 
RE: [EXTERNAL] COETF: EPA responses to Model Shell File Review

Good morning Dr. Jones, 
  
Please find the attached update to the model shell file that you provided to us on November 20th for your review.  All changes are highlighted in pink for ease of review and we have provided answers to your questions in the EPA Responses tab in Column E.  We are providing three attachments as documentation regarding two items: 
  
1.        Attachments #8 Pusher 2017 1213 Malfunction #8 Battery DEP.pdf and MSC 2017 Emissions Report excerpt.pdf  - On Tab 5-CCCCC in Row 45, the raw bleed gas to atmosphere reported to WV DEP is due to a malfunction on 12/13/2017.    We request that this line be removed from the modeling file as the emissions lasted 12 minutes. 
2.        Backup Quench Station Title V Record 2015.pdf  -  In response to your request in Row 131 of the EPA Responses tab, we are providing information regarding the backup quench tower.  While this unit can be moved to the 3-CCCCC tab, we believe this source should not be included in the modeling analysis.  It is used only when the primary quench tower is off-line for maintenance.  Therefore if this source were to be included in the modeling as well as the main quench tower, there is the potential for double counting as all quenches for the year were assigned to the primary quench tower.  The backup quench tower was used for approximately 70 minutes over the course of 6 to 8 hours in one day in 2015.  It was not used at all in 2014 or 2016. 
  
Please let us know if you have additional questions regarding our responses.   I hope you have a wonderful holiday!
  
Kind regards,

Mary Kaplan
Scientist IV, Air Quality and Engineering Studies
Environment
D 1.978.905.2260
Mary.Kaplan@aecom.com
 
AECOM
250 Apollo Drive, Chelmsford, Massachusetts 01824
T 1.978.905.2100  F 1.978.905.2101 Cisco 1232260
www.aecom.com

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