Exhibit A

USCA Case #14-1083 Document #1514095 Filed: 09/25/2014 Page 1 of 3
Emission Event Report

http://www11.tceq.texas.gov/oce/eer/index.cfm?fuseaction=main.getDetails&target=150219[9/11/2014 3:38:29 PM]

Emission Event Reporting Database

Regulated

entity

name

EASTMAN CHEMICAL TEXAS

OPERATIONS

Physical

location

GREGG AND HARRISON

COUNTIES

Regulated

entity RN

number

RN100219815 City,

County LONGVIEW, HARRISON

Type(s) of

air

emissions

event:

EMISSIONS EVENT Event

began: 02/02/2011 12:30PM

This is

based on

the:

FINAL REPORT Event

ended: 02/03/2011 5:45PM

Cause

The debutanizer column over pressured when the process line to the

pressure transmitters on the column froze due to very low, prolonged

wind chill temperatures. This transmitter typically sees material that is

approximately 200°F and, upon information and belief, Eastman has

found no evidence that it has frozen in the past. This overpressure

caused the relief valve on the column to relieve to the flare as

designed. Once pressure control was re-established, the relief valve

malfunctioned by failing to close completely and had to be replaced.

Action

taken

The pressure of the column was manually corrected while the process

line to the pressure transmitters was thawed. The line is also now

scheduled to be insulated. Once it was determined that the relief

valve had not closed completely, the relief valve contractor made

several attempts to get the valve to close but it was determined that

the valve had to be replaced. The replacement was expedited,

including shipment of the valve components from Corpus Christ,

assembly and testing of the new valve and installation which involved

specially trained maintenance and safety personnel.

Emissions

estimation

method

Engineering Best Estimates.

Source 1: Flare , EPN number 225FL1

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USCA Case #14-1083 Document #1514095 Filed: 09/25/2014 Page 2 of 3
Emission Event Report

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Contaminant Authorization Limit Amount

Released

Butadiene, 1-

3

NSR Permit No. 8539. No specific emissions

authorized for this EPN during upset conditions. 0.0 943.9 lbs(est.)

Butanes NSR Permit No. 8539. No specific emissions

authorized for this EPN during upset conditions. 0.0 73.0 lbs(est.)

Butylene NSR Permit No. 8539. No specific emissions

authorized for this EPN during upset conditions. 0.0 497.0 lbs(est.)

Carbon

Monoxide

NSR Permit No. 8539. No specific emissions

authorized for this EPN during upset conditions. 0.0 502.8 lbs(est.)

Other NSR Permit No. 8539. No specific emissions

authorized for this EPN during upset conditions. 0.0 4.6 lbs(est.)

Oxides of

Nitrogen

(NOx)

NSR Permit No. 8539. No specific emissions

authorized for this EPN during upset conditions. 0.0 69.6 lbs(est.)

Source 2: Flare , FIN number OL225FL1

Source 3: Hydrocarbon Cracking Plant No.4 (HCC-4) , FIN

number

Source 4: Vent System , FIN number OL226VS1

No other sources

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USCA Case #14-1083 Document #1514095 Filed: 09/25/2014 Page 3 of 3