NCS000064 DMR SW (2)

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Certified Mail 7015 0640 0005 2818 5787
Return to PEM Carter
PEMC16:01
January 8, 2015
NCDENR
Division of Water Quality
Surface Water Protection Section
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
(
Celanese
The chemistry inside innovation
RECEIVED
JAN 13 2016
ATTN: Central Files CENTRAL FILES
DWR SECTION
Reference: Semi -Annual Monitoring Results —
CNA Holdings, Inc- Shelby Plant -
Stormwater Permit No. NCS 000064
To Whom It May Concern:
Celanese Corporation
2525 Blacksburg Road
Grover, NC 28073-9641
www.celanese.com
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 September 1 — November 30, 2015. Duplicate
copies of the signed DMR report are attached.
NOTE: Celanese utilizes an outside laboratory for analytical testing. In our attempt to locate
these results, Prism Laboratory discovered they had sent our results to an email not associated
with Celanese, thus the delay in submitting this semi-annual monitoring. On January 8; 4:30
p.m., we notified Bradley Bennett's, NC Stormwater Permitting Unit ; left voicemail expressing
the concern that we did not know what had happen with the results and alerted him to the fact
that the report would be mailed no later than Monday January 11. See attached email from
Prism Laboratory explaining their error. Corrective action has been implemented requiring a hard
copy to be mail to Celanese. Per Part III Section E Page 6 of 8: Reporting Requirements —
Submittals shall be received by the Division no later than 30 days from the date the facility
receives the sampling results from the laboratory.
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
38
BRL
BRL
6.8
South Outfall
2.8
BRL
BRL
6.8
East Outfall
5.3
7.2
BRL
7.5

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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].
7Sin y,
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PEM Carter
EHS Lead/Environmental Engineer
Attachments: Stormwater Discharge Outfall (SDO) Monitoring Report (2 copies)
Email from Cara Rusimell — Prism Laboratory