NCS000064 DMR SW (4)

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PEMC16:17
June 7, 2016 Celanese Corporation
2525 Blacksburg Road
Grover,NC 28073-9641
NCDENR www.celanese.com
Division of Water Quality
Surface Water Protection Section
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
ATTN: Central Files
Reference: Semi-Annual Monitoring Results— CNA Holdings, Inc-Shelby Plant -
Stormwater Permit No. NCS 000064
To Whom It May Concern:
In accordance with the facility's Stormwater NPDES Permit, semi-annual monitoring must be
conducted in accordance with permit no. NCS000064. The following represent the semi-annual
monitoring results from the sampling period of April 1—June 30, 2016. Duplicate copies of the
signed DMR report are attached.
The monitoring results have been compared to the benchmark values of Table 3, which are not
permit limits but are guidelines for us to use in evaluating the sources of any benchmark
exceedance and for the evaluation of the effectiveness of our BMPs. The results from this
monitoring event are well within the benchmark values.
Outfall TSS : 100 mg/I BOD5: 30 mg/I COD: 120 mg/I pH: 6-9
North Outfall 34.2 9.7 BRL 6.2
South Outfall 8.0 5.9 BRL 6.8
East Outfall 36.4 6.0 BRL 6.9
CNA Holding LLC—Shelby Plant is committed to ensuring compliance with all County, State, and
Federal regulations. Should there be a need for further discussion pertaining to the information
above,feel free to call me at 704/480-5726 or via email at [e-mail].
•rely,
gnk
PEM Carter
EHS Lead/Environmental Engineer
Attachments: Stormwater Discharge Outfall (SDO) Monitoring Report (2 copies)

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STORMWATER DISCHARGE OUTFALL(SDO)
MONITORING REPORT
Permit Number NCS 000064 SAMPLES COLLECTED DURING CALENDAR YEAR: 2016
(This monitoring report shall be received by the Division no later than 30 days from
the date the facility receives the sampling results from the laboratory.)
FACILITY NAME C N A Holdings,LLC—Shelby Plant COUNTY Cleveland
PERSON COLLECTING SAMPLE(S) Mike Sparks & Mike Queen PHONE NO.( 704 )480-5793
CERTIFIED LABORATORY(S) Prism Laboratory Lab# NC402
C N A Holdings.LLC Lab# NC221
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PAGE 2.
Part A: Specific Monitoring Requirements
Outfall Date 50050 00530 00310 00340 00400
No. Sample Total Total Total
Collected Flow(if app.) Rainfall Suspended BOD5 COD pH
Solid(TSS)
mo/dd/yr MG inches mg/1 mg/1 mg/1 standard
North 05/17/16 n/a 0.45 34.2 BRL BRL 6.2
South 05/17/16 n/a 0.45 8.0 BRL BRL 6.8
East 05/17/16 n/a 0.45 36.4 7.2 BRL 6.9
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?_yes _X_no
(if yes,complete Part B)
Part B:Vehicle Maintenance Activity Monitoring Requirements
Outfall Date 50050 00556 00530 00400
No. Sample Total Flow Total Oil&Grease Non-polar Total pH New Motor
Collected (if applicable) Rainfall (if appl.) O&G/TPH Suspended Oil Usage
(Method 1664 Solids
SGT-HEM),if
appl. ,
mo/dd/yr MG inches mg/I mg/I unit gal/mo
n/a 1
Form SWU-247,last revised 2/2/2012
Page 1 of 2

STORM EVENT CHARACTERISTICS: Mail Original and one copy to:
Division of Water Quality
Date 05/17/16 Attn:Central Files
Total Event Precipitation(inches):_0.45 1617 Mail Service Center
Event Duration(hours): 6 (only if applicable—see permit.) Raleigh,North Carolina 27699-1617
(if more than one storm event was sampled)
Date
Total Event Precipitation(inches):
Event Duration(hours): (only if applicable—see permit.)
"I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a
system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person
or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is,to the
best of my knowledge and belief,true,accurate,and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations."
l
Rafael Gonzalez2/...,,..., ,y4,,D4,, , 6/7/2016
(Signature of Permittee) (Date)
Form SWU-247,last revised 2/2/2012
Page 2 of 2