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Public Notice

PROPOSED PART 70 AIR OPERATING PERMIT RENEWAL/MODIFICATION

CENTER POINT ENERGY FIELD SERVICES, INC. RUSTON STORAGE COMPRESSOR STATION, AI 26802

VIEW ATTACHMENTS FOLLOWING PUBLIC NOTICE

The LDEQ, Office of Environmental Services, is accepting written comments on a Part 70 Air Operating Permit Renewal/Modification for CenterPoint Energy Field Services, Inc., P.O. Box 21734, Shreveport, Louisiana 71151 for the Ruston Storage Compressor Station.  The facility is located approximately 8 miles north of Ruston on the left side of Howard Road, Ruston, Lincoln Parish.
 
CenterPoint Energy Field Services, Inc. requested a renewal/modification to the Part 70 Air Operating Permit for the Ruston Storage Compressor Station.
 
The Ruston Storage Compressor Station is a natural gas transmission facility that compresses gas from incoming pipelines into a nearby underground storage field. Gas also flows through the station when it is returned from the storage field into outgoing pipelines. A 4,000 hp natural gas-fired reciprocating engine is used to drive a compressor which pumps gas through the pipeline system. A glycol dehydrator is used to remove moisture from the gas during withdrawal from the storage field. The emergency generator supplies electrical power as needed. Saltwater separated from the natural gas stream is stored in three tanks and removed from the site via tank truck.  Annual natural gas throughput is 3,000 MM scf.
 
The facility operates under two scenarios. The use of a condenser with non-condensables routed to the reboiler for the control of emissions from the glycol dehydrator still column vent represents Scenario 1. The use of a thermal oxidizer for the control of emissions from the glycol dehydrator still column vent represents Scenario 2.
 
By this renewal/modification the CenterPoint Energy Gas Transmission Company is proposing the following changes:
 
1.      Include a diesel air compressor engine (Emission Point SN-28);
2.      Incorporate a previously permitted tank under a portable Permit No. 7777-00542-00 dated June 13, 2005 for Mississippi River Transmission Corp. as an insignificant activity; and
3.      Remove an existing Smart Ash Incinerator (Emission Point SN-20) from the permit as it is no longer located at the facility.
 
Estimated emissions for Scenario 1 in tons per year are as follows:
 
 Pollutant
Before
After
Change
PM10
5.68
5.45
- 0.23
SO2
0.08
0.26
+ 0.18
NOX
201.03
201.92
+ 0.89
CO
150.41
150.56
+ 0.15
VOC *
21.16
21.37
+ 0.21
 
*VOC LAC 33:III Chapter 51 Toxic Air Pollutants (TAPs):
Pollutant
Before
After
Change
Total
12.86
12.86
-
Other VOC (TPY):
                                                    
 8.51
 
Estimated emissions for Scenario 2 in tons per year are as follows:
 
 Pollutant
Before
After
Change
PM10
5.94
5.71
- 0.23
SO2
0.10
0.28
+ 0.18
NOX
204.40
205.29
+ 0.89
CO
153.24
153.39
+ 0.15
VOC *
21.35
21.56
+ 0.21
 
*VOC LAC 33:III Chapter 51 Toxic Air Pollutants (TAPs):
Pollutant
Before
After
Change
Total
12.86
12.86
-
Other VOC (TPY):
                                                  
   8.70
 
 
This permit was processed as an expedited permit in accordance with LAC 33:I.Chapter 18.
 
A technical review of the working draft of the proposed permit was submitted to the facility representative and the LDEQ Surveillance Division.  Any remarks received during the technical review will be addressed in the “Worksheet for Technical Review of Working Draft of Proposed Permit”.  All remarks received by LDEQ are included in the record that is available for public review.
 
Written comments, written requests for a public hearing or written requests for notification of the final decision regarding this permit action may be submitted to Ms. Soumaya Ghosn at LDEQ, Public Participation Group, P.O. Box 4313, Baton Rouge, LA 70821-4313. Written comments and/or written requests must be received by 12:30 p.m., Monday, November 30, 2009.  Written comments will be considered prior to a final permit decision.
 
If LDEQ finds a significant degree of public interest, a public hearing will be held. LDEQ will send notification of the final permit decision to the applicant and to each person who has submitted written comments or a written request for notification of the final decision.
 
The permit application, proposed permit and statement of basis are available for review at the LDEQ, Public Records Center, Room 127, 602 North 5th Street, Baton Rouge, LA. Viewing hours are from 8:00 a.m. to 4:30 p.m., Monday through Friday (except holidays). The available information can also be accessed electronically on the Electronic Document Management System (EDMS) on the DEQ public website at www.deq.louisiana.gov. .
 
An additional copy may be reviewed at the Lincoln Parish Library, Headquarters, 910 N Trenton Street, Ruston, LA 71270.
 
Inquiries or requests for additional information regarding this permit action should be directed to Syed Quadri, LDEQ, Air Permits Division, P.O. Box 4313, Baton Rouge, LA 70821-4313, phone (225) 219-3123.
 
Persons wishing to be included on the LDEQ permit public notice mailing list or for other public participation related questions should contact the Public Participation Group in writing at LDEQ, P.O. Box 4313, Baton Rouge, LA 70821-4313, by email at deqmaillistrequest@la.gov or contact the LDEQ Customer Service Center at (225) 219-LDEQ (219-5337).
 
Permit public notices including electronic access to the proposed permit and statement of basis can be viewed at the LDEQ permits public notice webpage at www.deq.louisiana.gov/apps/pubNotice/default.asp and general information related to the public participation in permitting activities can be viewed at www.deq.louisiana.gov/portal/tabid/2198/Default.aspx.
 
Alternatively, individuals may elect to receive the permit public notices via email by subscribing to the LDEQ permits public notice List Server at http://www.doa.louisiana.gov/oes/listservpage/ldeq_pn_listserv.htm.
 
All correspondence should specify AI Number 26802, Permit Number 1720-00028-V5, and Activity Number PER20090002.
 
Scheduled Publication Date: October 27, 2009

Attachments:

Louisiana Department of Environmental Quality 602 N. Fifth Street Baton Rouge, LA 70802 • Send e-mail to Webmaster or any member of our WWW Task Force with questions or comments about this web site. • To contact us by phone or mail, see our Office Address/Phone listing.