NC0003395_Application_20161121

NPDES DOCIMENT SCANNING COVER MENET
NPDES Permit:
NC0003395
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Application
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
November 21, 2016
This document is printed on reuse paper - ignore any
content on the resrerse side

Grz b, Julie
From: West, Steve
Sent: Monday, November 21, 2016 2:05 PM
To: Grzyb, Julie
Subject: RE: General Permit Application Hexion Acme Facility
Thanks Julie. I wanted to make sure the towers designated for thisPlease let me know if you need any mo
re beingfo made
and the towers used with the site recycle permit. It looks correct.
From: Grzyb, Julie
Sent: Monday, November 21, 2016 10:16 AM
To: West, Steve <[e-mail]>
Subject: FW: General Permit Application Hexion Acme Facility
Steve,
know if you have any
You requested to take a look at this application before we no boilerprocessed
blowdow scan be discharged till they get approval from
concerns with the application. Tom understands that
Aquatic Toxicity Branch on chemical usage.
Thanks,
Julie
Julie A Grzyb
Environmental Engineer
NC DEQ / Division of Water Resources / Water Quallity Permitting
NPDES Complex Permitting, Wastewater Branch
919 807 6389 office
919 707 9000 main office
iulie grzov
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
t Nothing Compares --
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Buller, Thomas rmailto:[e-mail]]
Sent: Friday, November 18, 2016 3:44 PM
To: Grzyb, Julie <[e-mail]>
Subject: General Permit Application Hexion Acme Facility
Ms. Grzyb,
1

1
Attached is our general permit application. If you have any questions please feel free to call me anytime at 910-274-
5921. Thank you,
Tom
This message, including attached files, is confidential and intended for the addressees. It may contain information that is proprietary, privileged or exempt for disclosure under
applicable law. Any unauthorized use and dissemination of the information or copying of this message is strictly prohibited. Any views, opinions or conclusions expressed in this
message are those of the individual sender and do not necessarily reflect the views of Hexion or its affiliates. If you received this message in error, please immediately advise the
sender by reply email, delete all copies of this message and refrain from printing, copying, or disseminating this message or otherwise using the information in it. Thank you.
Although Hexion routinely screens incoming and outgoing mail messages for viruses, addressees should scan this e-mail and any attachments for viruses themselves. Hexion does
not guarantee in any way the absence of viruses in this e-mail or any attachments and disclaims any liability in case of security problem that this message may cause to any system.
2

Grzyb, Julie
From: Grzyb, Julie
Sent: Friday, November 18, 2016 5:28 PM
To: 'Buller, Thomas'
Subject: RE: General Permit Application Hexion Acme Facility
Tom,
Just wanted to let you know I received the application. Please send the hard copy to the address listed on page 5, we
need to have the original signatures on file. �,.,
Thanks and hope you have a nice weekend, 5��; �� �`,�'f' ��2 (�Gn
Julie � ���,�-�
lAn r L) ,
+ f (_ i t_ � (Cry
Julie A Grzyb e v g-f �,' ,, c_e-11 '
Environmental Engineer 1r
NC DEQ / Division of Water Resources / Water Quallity Permitting I`
NPDES Complex Permitting, Wastewater Branch
919 807 6389 office
919 707 9000 main office
iulie.cirzyb(c�ncdenr.gov
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
1114C
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
''Nothing Compares
From: Buller, Thomas [mailto:[e-mail]]
Sent: Friday, November 18, 2016 3:44 PM
To: Grzyb, Julie <[e-mail]>
Subject: General Permit Application Hexion Acme Facility
Ms. Grzyb,
Attached is our general permit application. If you have any questions please feel free to call me anytime at 910-274-
5921. Thank you,
Tom
This message, including attached files, is confidential and intended for the addressees. It may contain information that is proprietary, privileged or exempt for disclosure under
applicable law. Any unauthorized use and dissemination of the information or copying of this message is strictly prohibited. Any views, opinions or conclusions expressed in this
message are those of the individual sender and do not necessarily reflect the views of Hexion or its affiliates. If you received this message in error, please immediately advise the
sender by reply email, delete all copies of this message and refrain from printing, copying, or disseminating this message or otherwise using the information in it. Thank you.
1

Grz b, Julie
From: Grzyb, Julie
Sent: Monday, October 24, 2016 10:55 AM
To: '[e-mail]'
Subject: FW: Hexion permit renewal
Attachments: NCG50-New Application-NOl-FormFillable-20130901-DWR-SWP-NPDES-Master.docx
Ronald, of the actual
Attached is the word document for the application for the General Permit NCG50, I had attached a copy
General permit previously.
Julie
From: Grzyb, Julie
Sent: Monday, October 24, 2016 10:32 AM
To: '[e-mail]' <[e-mail]>
Subject: Hexion permit renewal
Mr. Ronald Bazinet:
t
To follow-up on our phone conversation, I spoke with Thom not Iler on July received 26, 2015 and he said the General
must proceed with the ssuan e'of this
application would be sent to our office in August. We have
permit renewal. We have not received any correspondence from Hexion as to why this is being delayed.
I have attached a General Permit application for non -contact cooling water. Be sure to address the following items in
2) the discharge
your submittal. 1) the concentrate discharge from h ppr priatee osmosis amlaterialsity hasboranyen lbioc biocides being used in the
from the ion exchange unit has been eliminated?, 3) include
acooling water (if not already approved by the Division of Water Resources), 4) and a formal request from Hexion that the
individual permit (NC0003395) be rescinded and the General Permit
thee re issue e oNote, the r process individual perwaterbeingmit can only be
rescinded if there is only a discharge of non -contact cooling water,
such as Ion exchange wastewaters, Hexion will have to maintain an individual permit.
All wastewaters from Hexion and Silar should be addressed in the application. Also, since these wastewaters are
combined and discharge through one outfall, it is the Division's understanding that Hexion 15 so elyPler espubmrtlehor the
se
discharge from this outfall to Livington Creek. This should be ackno thindghe next two weeks or contact the Division with
ed in the application.application for a General permit to DWR NPDES permitting group
an agreeable date of submittal. If we do not hear from you, or all these a items are
planned.addressed in the revised
application, we will proceed with the issuance of an individualpermit
Thank you for your help on this matter. n (c5 ar '
Sincerely,CAAG (�� w a tee_ o o
Julie Grzyb rc �� - C�i'�
(1—s" f4
Julie A Grzyb
Environmental Engineer
NC DEQ / Division of Water Resources / Water Quallity Permitting
NPDES Complex Permitting, Wastewater Branch
919 807 6389 office
919 707 9000 main office
„so grzybCa ncdenr.gov
L
1

Grzyb, Julie
From: Grzyb, Julie
Sent: Monday, October 24, 2016 10:32 AM
To: '[e-mail]'
Subject: Hexion permit renewal
Attachments: NCG50 Final 093015.pdf
Mr. Ronald Bazinet:
To follow-up on our phone conversation, I spoke with Thom Buller on July 26, 2015 and he said the General Permit
application would be sent to our office in August. We have not received it. DWR must proceed with the issuance of this
permit renewal. We have not received any correspondence from Hexion as to why this is being delayed.
I have attached a General Permit application for non -contact cooling water. Be sure to address the following items in
your submittal. 1) the concentrate discharge from the reverse osmosis facility has been eliminated, 2) the discharge
from the ion exchange unit has been eliminated?, 3) include appropriate materials for any biocides being used in the
cooling water (if not already approved by the Division of Water Resources), 4) and a formal request from Hexion that the
individual permit (NC0003395) be rescinded and the General Permit be issued. Note, the individual permit can only be
rescinded if there is only a discharge of non -contact cooling water, if there are other process waters being discharged
such as Ion exchange wastewaters, Hexion will have to maintain an individual permit.
All wastewaters from Hexion and Silar should be addressed in the application. Also, since these wastewaters are
combined and discharge through one outfall, it is the Division's understanding that Hexion is solely responsible for the
discharge from this outfall to Livington Creek. This should be acknowledged in the application. Please submit the
application for a General permit to DWR NPDES permitting group within the next two weeks or contact the Division with
an agreeable date of submittal. If we do not hear from you, or all these items are not addressed in the revised
application, we will proceed with the issuance of an individual permit as previously planned.
Thank you for your help on this matter.
Sincerely,
Julie Grzyb
Julie A Grzyb
Environmental Engineer
NC DEQ / Division of Water Resources / Water Quallity Permitting
NPDES Complex Permitting, Wastewater Branch
919 807 6389 office
919 707 9000 main office
julie.grzyb(a)ncdenr.gov
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
IMC— 2 Nothing Compares --,,
Email correspondence to and from this address is subject to the
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From: Song, Yang
Sent: Friday, January 15, 2016 2:38 PM
To: 'Buller, Thomas'
Subject: FW: Potential Change on Hexion NPDES permit - NC0003395
Hello Tom,
rvi
Just want to reach back to you and learn what do you think for the permit renewal. Please let me know if you have any
questions or concerns. Thank you!
Yang
From: Song, Yang
Sent: Monday, January 04, 2016 4:27 PM
To: 'Buller, Thomas' <[e-mail]>
Cc: Gregson, Jim <[e-mail]>; Eric Power <[e-mail]>; Grzyb, Julie <[e-mail]>
Subject: FW: Potential Change on Hexion NPDES permit - NC0003395
Hello Tom,
Please see the notes from Brandon below. It seems like Silar has already sealed the pipes from RO Unit and Water
Softener. In order to proceed with the permit renewal, please contact Wilmington Regional Office supervisor Jim
Gregson at [phone] to schedule a site inspection concurring that discharge pipes from water treatment facilities
have been sealed. I have also CCed Jim in this email. It would be great to have both Hexion and Silar representatives
together during the inspection so the regional staff can inspect all discharges to the outfall.
Once the Region completes the inspection, Hexion shall write a formal letter to the NPDES Unit, which includes following
contents: a) acknowledge that the WiRO has verified the pipes from water treatment facilities have been sealed; b)
request to remove RO Units and Water Softener from the current permit; c) request to have the remaining cooling
towers and fire water tank blowdown be considered under the coverage of general permit NCG500000 (non -contact
cooling water).
Please let me know if you have further questions. Thank you!
-Hi Jim,
It will also be helpful to verify that the facility qualifies for the NCG500000 non -contact cooling water general permit
during the inspection. Besides the RO Unit and Water Softener, the current wastewater permit (NC0003395) includes
five cooling towers and one fire water tank. The fire water tank discharges once per week with a flow of 300 gallons per
day. Water sources for cooling towers and the fire water tank are from Livingston Creek. Please let me know if you need
further information. Thank you so much for the help!
Best regards,
Yang
From: Brandon Sproles Finailto:[e-mail]]
Sent: Monday, January 04, 2016 11:57 AM
To: Song, Yang <[e-mail]>
1

Cc: Buller, Thomas <[e-mail]>; Eric Power <[e-mail]>
Subject: RE: Potential Change on Hexion NPDES permit - NC0003395
Hi Yang,
We have sealed the discharge pipes and have been trying to coordinate with Culligan to get the unit picked up. We have
been getting DI water in Totes for the last month or so. We have also switched to using the same type of chemical for
our cooling tower that Hexion uses. I believe the plan is to stay on their permit and the only question was type of
chemical we use.
On a side note, I have decided to leave Silar for another opportunity. My last day is January 8th. Eric Power will be taking
over the environmental side of Silar. Thank you for all your help with the NPDES.
Thanks
Brandon
From: Song, Yang [mailto:[e-mail]]
Sent: Monday, January 4, 2016 11:47 AM
To: Brandon Sproles <[e-mail]>
Cc: Buller, Thomas <[e-mail]>
Subject: FW: Potential Change on Hexion NPDES permit - NC0003395
Hi Brandon,
This is Yang from DWR NPDES permitting group. Just curious can I learn more about the Silar Project to discontinue the
RO Unit and Water Softener? Did you already sealed the discharge pipes from these facilities and switch to using DI
water from other suppliers? Thank you!
Best regards,
Yang
From: Song, Yang
Sent: Friday, November 06, 2015 2:27 PM
To: 'Buller, Thomas' <[e-mail]>
Cc: 'Brandon Sproles' <[e-mail]>; Grzyb, Julie <[e-mail]>
Subject: Potential Change on Hexion NPDES permit - NC0003395
Hello Tom,
I was informed by Brandon Sproles from Silar that they are going to use DI water from Culligan instead of running their
own water treatment system. Brandon mentioned they would discontinued the RO Unit and Water Softener in a few
weeks. Due to the potential change in the discharge components, I would suggest postponing the permit renewal for 4-6
weeks to have Silar finish their project. If Silar eliminates the Water Treatment Plant discharge, Hexion is eligible to
apply for a general permit of non -contact cooling water blowdown (NCG500000). The General Permit (NCG500000) is
less costly ($100/yr verses $860) and is easily renewed every five years.
Once Silar seals the discharge pipe from the RO Unit and the Water Softener, please inform the Wilmington Regional
Office. The WiRO staff will perform an inspection and confirm that the discharge is sealed off. When this is completed,
please verify in writing to the DWR NPDES Permitting Unit that the Water Treatment Plant has been taken off-line and
the discharge pipe sealed. At that time, Hexion is welcome to request in writing that a General Permit for the cooling
2

tower blowdown be issued and the existing individual permit be rescinded. Please note that the Division does not
believe that a NPDES permit is required for the discharge of the creek water from flushing out the fire tank once/week
(-300 gallons) per North Carolina Administrative Code T15A: 02H .0106 (f). As long as no chemicals are added to the fire
water tank and no water quality standards are contravened, or expected to be contravened, this discharge is allowed.
Please let me know if you have any questions or concerns.
Thank you!
Yang Song
Engineer, NPDES Complex Permitting Unit
NCDWR/Water Quality Programs
919-807-6479
512 N. Salisbury Street, Archdale Bldg #925Z, Raleigh, NC 27604
1617 Mail Service Center, Raleigh, NC 27699-1617
0
'Nothing Compares
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
3

NC DEQ/DWR/NPDES Permitting Unit
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES PERMIT NC0003395
Facility Information
Applicant/Facility Name:
Hexion Inc. / Acme Facility
Applicant Address:
333 Neils Eddy Road, Riegelwood, NC
Facility Address:
333 Neils Eddy Road, Riegelwood, NC
Permitted Flow
N/A
Type of Waste:
Non -contact Cooling Water, Reverse Osmosis Reject, Water
Softener Backwash / Regenerant, Firewater Tank Blowdown
Facility/Pen-nit Status:
Renewal, no expansion
County:
Columbus
Miscellaneous
Receiving Stream:
Livingston Creek
Regional Office:
Wilmington
Stream Classification:
C-SW
8-Digit HUC:
03030005
303(d) Listed?
No
Permit Writer:
Yang Song
Subbasin/ Stream Index:
03-06-17/ 18-64
Date:
October 30, 2015
Drainage Area (mi2):
94.7
0.
Lat. 34° 19' 45" N Long. 78° 12' 16"W
Summer 7Q10 (cfs)
0.6
Winter 7Q10 (cfs):
7
Average Flow (cfs):
85
IWC (%):
4.0 (applying
0.016 MGD
designed flow)
OVERVIEW:
• This is a permit renewal for Hexion Inc. -Acme Facility, a privately owned organic
chemical manufacturing plant.
• The current permit expires 12/30/2011. The facility submitted a renewal application
(Short Form C-MI) dated 7/1/2011. Additional information was requested by the Division
on 7/23/2015 and the permittee responded as requested.
• Permit NC0003395 was originally issued to Wright Chemicals Corporation. In 2004, Oak
Bark Corporation purchased the site and sold portions of the site to Hexion and Silar.
Hexion Inc. has been responsible for this permit since Jan. 2007.
• Hexion Inc. is formerly known as Momentive Special Chemicals Inc. and Hexion Special
Chemicals Inc.
• The facility used to have two permitted outfalls - Outfall 001 (process wastewater &
boiler blowdown water) and Outfall 002 (non -contact process cooling water). In early
2007, Outfall 001 was discontinued and all process wastewater previously discharging to
Outfall 001 has been discharged to the Columbus County POTW. Utility water sources
formerly discharged to Outfall 001 have been transferred to Outfall 002.
• Hexion Inc. also has a NPDES Storm Water Permit NCS000156. The Wright Chemical
Corporation site is regulated with EPA Superfund program.
Acme Facility Fact Sheet
NPDES Renewal
Page 1 of 4

FACILITY DESCRIPTION:
• The Outfall 002 discharge is comprised of following waste streams:
o Cooling Tower Blowdown from units: #2, #7, #10, #11, #12 - 0.0027 MGD each
o Water Softener and Reverse Osmosis Unit - 0.014 MGD
o Firewater Tank Blowdown - 0.0003 MGD
• Cooling Tower #12 and Water Softener/RO Unit are properties of Silar; Oak Bark
maintained ownership of cooling tower #1 and had a discharge service agreement with
Hexion Inc. The service agreement expired at the end of 2011.The Division was notified
in the additional information letter from Hexion dated 9/21/2015 that the Cooling Tower
#1 discharge line was sealed. No discharge can occur from Cooling Tower #1. As a result,
Hexion is requesting to remove Cooling Tower #1 from the permit.
• Sources of Cooling Tower and Firewater Tank blowdown are Livingston Creek; Sources
of Water Softener/RO Unit are county water.
• Cooling Tower blowdown is discharged continuously; Water Softener/RO Unit
wastewater is discharged 5 times/month; Firewater Tank blowdown is discharged
once/week.
• The permittee is currently applying hydrogen peroxide and corrosion inhibitor CL-438
into Cooling Towers.
• Annual average wastewater flow was 0.02 MGD in 2014 with maximum flow of 0.08
MGD.
RECEIVING STREAM:
• The receiving stream is Livingston Creek, which is classified C; SW, in the Cape Fear
River Basin (subbasin 03-06-17, HUC 03030005).
• Livingston Creek is not an impaired stream on the 2014 final 303(d) list. However, about
3 miles downstream from the discharge point where Livingston Creek meets Cape Fear
River, the segment of Cape Fear River is impaired for benthos micro -invertebrate.
FACILITY PERFORMANCE/COMPLIANCE REVIEW:
• DMR Data. DMRs have been reviewed for the period of Jan. 2012 through Dec. 2014.
Table 1. Lists average and maximum effluent data collected from 1/2012 through 12/2014.
Parameter
Flow
BOD5
Total Residual
Chlorine
Ammonia
Nitrogen
Methanol
Formaldehyde
(MGD)
(mg/L)
(ug/L)
(mg/L)
(mg/L)
(mg/L)
average
3.49
3.85 S/2.27 W
6.47
0.48 S/ 0.75 W
5.31
2.50
maximum
9.34
14.0 S/3.0 W
26
3.97 S/ 3.91 W
10.0
31.90
Limit
28 (DM)
7.48 (WA)
Parameter
Total Nitrogen
Total
Phosphorus
Salinity
Conductivity
Oxygen
(mg/L)
(mg/L)
(mg/L)
(umho/cm)
(mg/L)
average
5.48
0.56
1767.2
519
6.31
maximum
47.6
9.48
180000
1640
2.09 (min.)
Limit
Acme Facility Fact Sheet
NPDES Renewal
Page 2 of 4

• Permit Violations. For the period between Jan. 2010 and Jun. 2015, the permittee had one
weekly average exceedance of formaldehyde in Nov. 2012, which was proceeded to
NOV.
• Aquatic Toxicity Testing. The facility has passed 22 of 22 quarterly Ceridiaphnia dubia
7-day pass/fail chronic toxicity tests at 4.7% effluent, for period of Jan. 2010 through May
2015.
• Compliance Inspections. The facility received "Satisfactory" ratings for the last
Compliance Evaluation Inspection conducted 11/5/2013.
• Compliance Conclusion. There are no significant areas of non-compliance noted over the
past permit round.
PERMIT LIMIT DEVELOPMENT:
• Floe: Maintain flow measurement frequency as weekly with sample type of
instantaneous.
• Remove BOD5 monitoring requirement and add COD monthly monitoring requirement.
• Ammonia: Maintain ammonia -nitrogen monthly monitoring requirement.
• TRC: Maintain total residual chlorine daily maximum limit of 28 ug/L and monitoring
requirements in the permit pertaining to the usage of county water.
• Temperature: Effluent monitoring for temperature remains in the permit; add upstream
and downstream temperature monitoring since the major sources of effluent are cooling
tower blowdown water and the receiving stream is Trout water with stringent temperature
requirements.
• pH: Maintain pH limitation of "not greater than 9.0 s.u. nor less than 6.0 s.u.".
• Dissolved Oxygen: XXXX
• TN/TP: Maintain total nitrogen and total phosphorus monitoring requirements.
• Salinity/Conductivity: Maintain salinity and conductivity effluent and instream
monitoring requirements.
• Reasonable Potential Analysis (RPA) for Toxicants
o Arsenic, iron, fluoride, zinc, and methanol — effluent data showed no potential to
violate water quality standards and the maximum predicted concentrations were
less than 50% of the allowable allocations. Monitoring requirements for arsenic,
iron, fluoride, zinc and methanol will be removed from NPDES permit.
o Chloride — effluent data showed no potential to violate water quality standards and
the maximum predicted concentration was less than 50% of the allowable
allocations. Since chloride is a parameter of concern for water softener backwash,
monitoring of chloride will be maintained in the permit with monitoring
frequency reduced to quarterly.
o Copper — the maximum predicted values for copper demonstrated a reasonable
potential to exceed both the chronic and acute allowable concentrations (permit
limit). However, copper has an action level standard and is reviewed in
conjunction with toxicity testing results. The facility has passed all toxicity tests
since January 2010; therefore, copper monitoring was maintained in the permit
with the monitoring frequency reduced to quarterly.
o Formaldehyde — the maximum predicted value for formaldehyde showed a
reasonable potential to exceed chronic allowable concentration. A weekly average
Acme Facility Fact Sheet
NPDES Renewal
Page 3 of 4

limitation of 30.23 mg/L will be updated and the monthly monitoring requirement
will remain in the permit.
• Turbidity: Add monthly monitoring requirements of turbidity with grab sample type.
• Oil and grease:
BASIS FOR PERMIT EFFLUENT LIMITS:
SUMMARY OF PROPOSED CHANGES:
The following permit changes are proposed for this permit renewal:
1. Addition of electronic DMR requirement.
2. Updates of flow measurement frequency and sample type.
3. Removal of BOD5 monitoring and addition of COD monitoring with frequency of
monthly.
4. Addition of temperature instream monitoring requirements.
5. Removal of methanol, arsenic, iron, fluoride, zinc monitoring requirements.
6. Update of formaldehyde weekly average limitation with reduced monitoring frequency of
quarterly.
7. Addition of effluent dissolved oxygen limitation of "not less than 5 mg/L".
8. Addition of turbidity monthly monitoring requirements.
9. Addition of revised Toxicity testing language.
Proposed Schedule for Permit Issuance:
Draft Permit to Public Notice:
Permit Scheduled to Issue:
XXXX, 2016
XXXX, 2016
NPDES Contact:
If you have any questions on any of the above information or on the attached permit, please
contact Julie Grzyb at [phone].
Signature Date
Acme Facility Fact Sheet
NPDES Renewal
Page 4 of 4

C ot o , zv r 2 - p? c . 2 / () kJ G oc ' e7 .9;
Salinity DO
Date Upstream/mg/L Downstream/mg/L Difference Percentage Date Upstream/mg/L Downstream/mg/L Difference
1/3/2012 100 800 700 700.00 1/3/2012 7.77 7.26 -0.51
2/7/2012 100 300 200 200.00 2/7/2012 5.65 6.46 0.81
3/13/2012 100 100 0 0.00 3/13/2012 5.89 6.45 0.56
4/10/2012 100 100 0 0.00 4/10/2012 3.32 1.71 -1.61
5/8/2012 100 200 100 100.00 5/8/2012 3.17 6.1 2.93
6/5/2012 <100 200 100 6/5/2012 4.65 3.1 -1.55
7/3/2012 200 200 0 0.00 7/3/2012 2.15 3.15 1
8/7/2012 100 300 200 200.00 8/7/2012 3.3 2.23 -1.07
9/11/2012 100 200 100 100.00 9/11/2012 5.54 3.62 -1.92
10/2/2012 100 300 200 200.00 10/2/2012 5.46 3.77 -1.69
11/6/2012 100 400 300 300.00 11/6/2012 3.98 1.67 -2.31
12/4/2012 100 600 500 500.00 12/4/2012 6.52 4.71 -1.81
1/8/2013 100 100 0 0.00 1/8/2013 6.69 5.6 -1.09
2/5/2013 <100 100 0 0.00 2/5/2013 8.2 7.94 -0.26
3/5/2013 100 100 0 0.00 3/5/2013 10.74 4.94 -5.8
4/4/2013 100 100 0 0.00 4/4/2013 4.02 2.95 -1.07
5/9/2013 93 360 267 287.10 5/9/2013 6.1 1.8 -4.3
6/4/2013 110 950 840 763.64 6/4/2013 3.28 0.86 -2.42
7/9/2013 68 75 7 10.29 7/9/2013 2.7 0.5 -2.2
8/13/2013 120 4300 4180 3483.33 8/13/2013 1.39 2.29 0.9
9/10/2013 110 3600 3490 3172.73 9/10/2013 4.64 1.25 -3.39
10/8/2013 130 6200 6070 4669.23 10/8/2013 2.84 1.09 -1.75
11/5/2013 170 13000 12830 7547.06 11/5/2013 2.86 2.58 -0.28
12/3/2013 120 980 860 716.67 12/3/2013 8.89 2.29 -6.6
1/14/2014 110 130 20 18.18 1/14/2014 9.13 7.9 -1.23
2/11/2014 120 410 290 241.67 2/11/2014 7.4 6.03 -1.37
3/4/2014 100 3600 3500 3500.00 3/4/2014 6.39 6.85 0.46
4/9/2014 99 570 471 475.76 4/9/2014 6.3 5.7 -0.6
5/6/2014 100 240 140 140.00 5/6/2014 2.35 1.82 -0.53
6/3/2014 100 240 140 140.00 6/3/2014 1.98 2.89 0.91
7/11/2014 83 10000 9917 11948.19 7/11/2014 2.83 2.59 -0.24
8/12/2014 45 120 75 166.67 8/12/2014 5.9 0.7 -5.2
9/2/2014 100 2800 2700 2700.00 9/2/2014 3.56 1.45 -2.11
10/6/2014 100 1800 1700 1700.00 10/6/2014 4.28 3.36 -0.92
11/4/2014 150 250 100 66.67 11/4/2014 4.28 6.24 1.96
12/9/2014 120 2100 1980 1650.00 12/9/2014 5.3 2.6 -2.7

Conductivity
Date Upstream/pmho/cm Downstream/pmho/cm Difference Percentage/%
1/3/2012 165 1610 1445 875.76
2/7/2012 169 608 439 259.76
3/13/2012 126 222 96 76.19
4/10/2012 143 280 137 95.80
5/8/2012 171 339 168 98.25
6/5/2012 99 357 258 260.61
7/3/2012 396 534 138 34.85
8/7/2012 157 694 537 342.04
9/11/2012 104 405 301 289.42
10/2/2012 136 589 453 333.09
11/6/2012 158 738 580 367.09
12/4/2012 130 1360 1230 946.15
1/8/2013 101 297 196 194.06
2/5/2013 66 212 146 221.21
3/5/2013 89 183 94 105.62
4/4/2013 111 303 192 172.97
5/9/2013 97.9 270 172.1 175.79
6/4/2013 106 460 354 333.96
7/9/2013 70.6 77.7 7.1 10.06
8/13/2013 121 925 804
9/10/2013 110 852 742
10/8/2013 132 1080 948
11/5/2013 157 1440 1283
12/3/2013 122 468 346
1/14/2014 109 126 17 15.60
2/11/2014 115 290 175 152.17
3/4/2014 108 851 743
4/9/2014 99.5 350 250.5
5/6/2014 103 204 101
6/3/2014 115 967 852
7/11/2014 85 1330 1245
8/12/2014 50 120 70 140.00
9/2/2014 103 765 662 642.72
10/6/2014 103 622 519 503.88
11/4/2014 144 213 69 47.92
12/9/2014 123 678 555 451.22
664.46
674.55
718.18
817.20
283.61
687.96
251.76
98.06
740.87
1464.71

DO
Date Upstream/mg/L Downstream/mg/L Difference Effluent
1/3/2012 7.77 7.26 -0.51 12.14
2/7/2012 5.65 6.46 0.81 7.17
3/13/2012 5.89 6.45 0.56 6.72
4/10/2012 3.32 1.71 -1.61 7.74 E-
5/8/2012 3.17 6.1 2,93 7.15
6/5/2012 4.65 3.1 -1.55 4.19
7/3/2012 2.15 3.15 1 5.45
8/7/2012 3.3 2.23 -1.07 3.75
9/11/2012 5.54 3.62 -1.92 6.06 .-
10/2/2012 5.46 3.77 -1.69 7.79
11/6/2012 3.98 1.67 -2.31 4.63E-
12/4/2012 6.52 4.71 -1.81 9.04 -
1/8/2013 6.69 5.6 -1.09 8.46
2/5/2013 8.2 7.94 -0.26 9.75
3/5/2013 10.74 4.94 -5.8 7.23 S
4/4/2013 4.02 2.95 -1.07 5.01
5/9/2013 6.1 1.8 -4.3 6.4 E--
6/4/2013 3.28 0.86 -2.42 C.2.--
7/9/2013 2.7 0.5 -2.2 5.09�
8/13/2013 1.39 2.29 0.9 3.24
9/10/2013 4.64 1.25 -3.39 7 E
10/8/2013 2.84 1.09 -1.75
11/5/2013 2.86 2.58 -0.28
12/3/2013 8.89 2.29 -6.6
1/14/2014 9.13 7.9 -1.23
2/11/2014 7.4 6.03 -1.37
3/4/2014 6.39 6.85 0.46
4/9/2014 6.3 5.7 -0.6
5/6/2014 2.35 1.82 -0.53
6/3/2014 1.98 2.89 0.91
7/11/2014 2.83 2.59 -0.24
8/12/2014 5.9 0.7 -5.2
9/2/2014 3.56 1.45 -2.11
10/6/2014 4.28 3.36 -0.92
11/4/2014 4.28 6.24 1.96
12/9/2014 5.3 2.6 -2.7
8.82�
4.7
9.08
8.82
9.14
4.71
4.05
4.65
7.22
5.137
5.23
7.44
6.23

Whole Effluent Toxicity Testing and Self Monitoring Summary
Mocksville WWTP Dutchman's Cr. NC0021491/001 County: Davie Region: WSRO Basin: YAD05 Jan AprJul Oct SOC_JOC:
Ceri7dPF Begin: 5/1/2010 chr lim: 37% @ 0.98 NonComp: Single 7010: 2.54 PF: 0.68 IWC: 37.5 Freq: Q
1 F M A M J J A S 0 N D
2010 Pass * * Fail >74 >74 Pass * * Pass * *
2011 Pass * * Pass * * Pass * Pass * *
2012 Pass * * Pass * * Pass * Pass * *
2013 Pass * * Pass * * Pass * * Pass * *
2014 Pass * * Pass * * Pass * * Pass * *
2015 Pass * * PaSS * * * * * * * •
Momentive (formerly Hexion) NC0003395/002 County: Columbus Region: WIRO Basin: CPF17 Feb May Aug Nov SOC_JOC:
Ceri7dPF Begin: 9/1/2007 Chr Lim: 4.7% NonComp: 7010: PF: IWC: Freq: Q
J F M A M J J A 5 0 N D
2010 * Pass * * Pass * * Pass * * Pass
2011 * Pass * * Pass * * Pass * * Pass *
2012 * Pass * * Pass * * Pass * * Pass *
2013 * Pass * * Pass Pass * * Pass *
2014 * Pass * * Pass * Pass * * Pass
2015 * Pass * * Pass * * * * *
Monroe WWTP
Ceri7dPF
NC0024333/001 County: Union Region: MRO Basin: YAD14 MarJun Sep Dec SOCJOG:
Begin: 9/1/2014 chr lim: 90% @10.4 NonComp: Single 70.10: 0.43 PF: 10.4 IWC: 97.40 Freq: Q
1 F M A M J J A S 0 N D
2010 Pass * * Pass * * Pass * * Pass
2011 * * Pass * * Pass * Pass * * Pass
2012 * * Pass * * Pass * * Pass * * Pass
2013 * * Pass * * Pass * >100(P) Pass * >100(P) Pass
2014 * * Pass * * Pass * * Pass * * Pass
2015 * * Pass * * Pass * * * * * *
Montgomery County WTP NC0080322/001 County: Montgomery Region: FRO Basin: YAD08 Jan Apr Jul Oct SOC_JOC:
Ceri7dPF Begin: 7/1/2014 Chr Monit: 90% NonComp: 7010: PF: 0.470 IWC: Freq: Q
J F M A M J J A S 0 N D
2010 Fail * * Fail * * Pass * * Pass * *
2011 Pass * * Pass * * Fail 77.9 Pass *
2012 Pass * * Fail * * Fail * * Pass
2013 Fail * * Fail * * Fail * * Fail * *
2014 Pass * * Pass * * Pass * * Fail * *
2015 Fail * * Invalid Fail >100 * * * * * *
Page 87 of 148

Hexion, Inc. - Acme Facility
NC0003395
Qw (MGD) = 0.02
1Q10S(cfs)= 0.51
7Q10S(cfs)= 0.60
7Q10W (cfs)= 7.00
30Q2 (cfs)= NO 30Q2 DATA
Avg. Stream Flow, QA (cfs) = 85.00
Receiving Stream: Livingston Creek
Outfall 002
2014 Freshwater RPA - 95% Probability/95% Confidence Qw = 0.016 MGD
MAXIMUM DATA POINTS = 58
WWTP/WTP Class: PC
IWC @ 1Q10S = 4.637248%
IWC @ 7QI0S = 3.969270%
IWC @ 7Q10W = 0.353035%
IWC @ 30Q2 = N/A
IWC @ QA = 0.029168%
Stream Class: C-Sw
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2)
PQL
z
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS /
Chronic
Applied
Standard
/z FAV /
Acute
n
Max Prod
# Det. Cw Allowable Cw
Arsenic ,,&./
Arsenic „%
C
C
50
10
FW(7Q10s)
HH/WS(Qavg)
ue%I.
L ig/l .
40
40
21
21
14.2
14.2
Acute: NO WQS
_ _ _ —_—__ _ _
Chronic: 1,259.7
N_ o value > Allowable Cw
Chronic: 34,284.2
No value > Allowable Cw
_________________________
_ _ _ _ _ _ _ _ _ _ _ _ ---
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Chlorides (AL)
/
NC
230
FW(7Q10s)
mgL
38
38
1.109
Acute: NO WQS
_ __—_— _ __
Chronic: 5,795
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Copper (AL)
NC
7
FW(7Q10s)
7.3
ue/L
40
39
558.6
Acute: 157.4
_ _ _____ _ __
Chronic: 176.4
8 value(s) > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _____
RP for AL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
Monitoring in conjunction with TOX Test
Fluoride '�.'
NC
1800
FW(7Q10s)
tie/L
40
27
1,915.9
Acute: NO WQS
_ _ ____ _ _ __
Chronic:45,348.4
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ __
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Zinc (AL)j
NC
50
FW(7Q10s)
67
ug/L`
4.
`
40
30
69.5
Acute: 1,444.8
_ _ __—__ _ __
Chronic: 1,259.7
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ __
No RP, Predicted Max < 50% of Allowable Cw No
Monitoring required
Methanol
NC
630
HH(7Q10s)
mg/L
40
1
5.75000
Acute: NO WQS
_ _ ___ _ _ _
Chronic: 15871.93548
No value > Allowable Cw
_ _ _ _ _ _ _ _ _ _ _ _ _ _
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
Formaldehyde
NC
1.2
FW(7Q10s)
mg/L
J
40
38
40.51300
Acute: NO WQS
_ _ — _ _ _
Chronic: 30.23226
1 value(s) > Allowable Cw
_ _ _ _
RP for non -AL - apply Monthly Monitoring with Limit
Iron \.,/
NC
1
FW(7Q10s)
mg/L
40
40
4.21800
Acute: NO WQS
_ _ — _ _ _-
Chronic: 25.19355
No value> Allowable Cw
_-_-_-_-_-_-_-_-_-_-_-_-_-_-
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required
0
0
N/A
Acute:
- --------------------------------------
Chronic:
Page 1 of 1
nc3395-RPA20152, rpa
10/14/2015

yrdvllle
This map was produced by the Geographic Information Systems (GIS)
program. Informational data used to create this map were collected from
federal, state, county, and private organizations. This map is a general
guide to assist the public and Is for illustrative purposes only. While every
effort is made to keep this map accurate and up-to-date, it is not intended
to replace any official source. Under no circumstances shall the State of
North Carolina be liable for any actions taken or omissions made from
reliance on any information contained herein from whatever source nor
shall the State be liable for any other consequences from any such reliance.
m - r x r
Background imagery are U.S. Geological Fishery Nursery Areas
Survey 1:100,000-scale planlmetric maps. ®I Primary
Permanent Secondary
® Special Secondary
® Military Danger
Zones and
Restricted Areas
ME inland waters (WRCjurisdiction) Map 24
caPe - Greenback
Lending
Fishery Nursery Areas
•
Map Datum: NAD83
Map Projection: NC State Plane
Map Date: March 2011
1000 0 1000 2000 Yards
0.7 0 t% 0.7 1.4 Miles

REASONABLE POTENTIAL ANALYSIS
19
Methanol
Date Data BDL=1/2DL Results
1 1/3/2012 < 10 5 Std Dev.
2 2/7/2012 < 10 5 Mean
3 3/13/2012 < 10 5 C.V.
4 4/10/2012 < 10 5 n
5 5/8/2012 < 10 5
6 6/5/2012 < 10 5 Mult Factor =
7 7/3/2012 < 10 5 Max. Value
8 8/7/2012 < 10 5 Max. Pred Cw
9 9/11/2012 < 10 5
1010/212012 < 10 5
11 11/6/2012 < 10 5
12 12/4/2012 < 10 5
131/8/2013 < 10 5
14 2/5/2013 < 10 5
15 3/5/2013 < 10 5
16 4/4/2013 < 10 5
17 5/9/2013 < 10 5
18 6/4/2013 3.17 3.17
19 7/9/2013 < 1 0.5
20 8/13/2013 < 1 0.5
21 9/10/2013 < 1 0.5
22 10/8/2013 < 1 0.5
23 11/5/2013 < 1 0.5
24 12/3/2013 < 1 0.5
25 1/14/2014 < 1 0.5
26 2/11/2014 < 1 0.5
27 3/4/2014 < 1 0.5
28 4/9/2014 < 1 0.5
29 5/6/2014 < 1 0.5
30 6/3/2014 < 1 0.5
31 7/11/2014 < 1 0.5
32 8/12/2014 < 1 0.5
33 9/2/2014 < 1 0.5
34 10/7/2014 < 1 0.5
35 11/4/2014 < 1 0.5
36 12/9/2014 < 1 0.5
37 1/6/2015 < 1 0.5
38 2/3/2015 < 1 0.5
39 3/3/2015 < 1 0.5
40 4/7/2015 < 1 0.5
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum clala
points = 58
20
Formaldehyde
2.2342
2.4793
0.9012
40
1.15
5.000000 mg/L
5.750000 mg/L
Date Data BDL=1/2DL Results
1 1/3/2012 0.078 0.078 Std Dev.
2 2/7/2012 0.108 0.108 Mean
3 3/13/2012 0.116 0.116 C.V.
4 4/10/2012 0.149 0.149 n
5 5/8/2012 < 0.05 0.025
6 6/5/2012 0.09 0.09
7 7/17/2012 0.497 0.497
8 8/7/2012 0.19 0.19
9 9/11/2012 0.165 0.165
10 10/2/2012 < 1 0.5
11 11/6/2012 31.9 31.9
12 12/4/2012 0.13 0.13
13 1/8/2013 0.05 0.05
14 2/5/2013 0.21 0.21
15 3/5/2013 0.39 0.39
16 4/4/2013 0.15 0.15
17 5/9/2013 5.755 5.755
18 6/4/2013 1.68 1.68
19 7/9/2013 2.05 2.05
20 8/13/2013 0.994 0.994
21 9/10/2013 1.38 1.38
22 10/8/2013 0.708 0.708
23 11/5/2013 0.316 0.316
24 12/3/2013 0.92 0.92
25 1/14/2014 3.73 3.73
26 2/11/2014 3.42 3.42
27 3/4/2014 2.94 2.94
28 4/9/2014 1.75 1.75
29 5/6/2014 6.11 6.11
30 6/3/2014 5.15 5.15
31 7/11/2014 5 5
32 8/12/2014 3.45 3.45
33 9/2/2014 0.791 0.791
34 10/7/2014 4.24 4.24
35 11/4/2014 0.669 0.669
36 12/9/2014 3.78 3.78
37 1/6/2015 1.47 1.47
38 2/3/2015 0.94 0.94
39 3/3/2015 1.44 1.44
40 4/7/2015 2.1 2.1
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE
SPECIAL -Values"
then "COPY" .
Maximum dnta
points = 58
5.1034
2.3883
2.1369
40
Mult Factor = 1.27
Max. Value 31.900000 mg/L
Max. Pred Cw 40.513000 mg/L
nc3395-RPA20152, data
-4- 10/14/2015

REASONABLE POTENTIAL ANALYSIS
11
Fluoride
Date Data BDL=1/2DL
200
100
50
100
700
200
250
250
250
50
300
50
50
100
100
50
350
238
50
188
50
211
271
50
125
476
1610
371
210
1290
893
50
50
193
1210
173
671
1240
256
411
1/3/2012
2/7/2012
3/13/2012
4/10/2012
5/8/2012
6/5/2012
7/3/2012
8/7/2012
9/11/2012
10/2/2012
11/6/2012
12/4/2012
1/8/2013
2/5/2013
3/5/2013
4/4/2013
5/9/2013
6/4/2013
7/9/2013
8/13/2013
9/10/2013
10/8/2013
11/5/2013
12/3/2013
1/14/2014
2/11/2014
3/4/2014
4/9/2014
5/6/2014
6/3/2014
7/11/2014
8/12/2014
9/2/2014
10/7/2014
11/4/2014
12/9/2014
1/6/2015
2/3/2015
3/3/2015
4/7/2015
200
100
< 100
100
700
200
< 500
< 500
< 500
< 100
300
< 100
< 100
100
100
< 100
350
238
< 100
188
< 100
211
271
< 100
125
476
1610
371
210
1290
893
< 100
< 100
193
1210
173
671
1240
256
411
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
18
Zinc (AL)
390.9978
335.9250
1.1639
40
1.19
1610.0 ug/L
1915.9 ug/L
Date Data BDL=1/2DL
34
24
17
15
39
34
44
59
60
61
17
20
28
5
23
11
46
5
26
25
19
6.4
50
5
5
24.8
5
5
15
14
2.05
18
2.05
5
7
5
21
18
12
21.5
1/3/2012
2/7/2012
3/13/2012
4/10/2012
5/8/2012
6/5/2012
7/3/2012
8/7/2012
9/11/2012
10/2/2012
11/6/2012
12/4/2012
1/8/2013
2/5/2013
3/5/2013
4/4/2013
5/9/2013
6/4/2013
7/9/2013
8/13/2013
9/10/2013
10/8/2013
11/5/2013
12/3/2013
1/14/2014
2/11/2014
3/4/2014
4/9/2014
5/6/2014
6/3/2014
7/11/2014
8/12/2014
9/2/2014
10/7/2014
11/4/2014
12/9/2014
1/6/2015
2/3/2015
3/3/2015
4/7/2015
34
24
17
15
39
34
44
59
60
61
17
20
28
< 10
23
11
46
< 10
26
25
19
6.4
50
< 10
< 10
24.8
< 10
< 10
15
14
< 4.1
18
< 4.1
< 10
7
< 10
21
18
12
21.5
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 58
16.6928
21.3450
0.7820
40
1.14
61.0 ug/L
69.5 ug/L
- 3 -
nc3395-RPA20152, data
10/14/2015

REASONABLE POTENTIAL ANALYSIS
5
Chlorides (AL)
Date nata
3/13/2012 41
4/10/2012 34
5/8/2012 149
6/5/2012 37
7/3/2012 71
8/7/2012 164
9/11/2012 264
10/2/2012 24
11/6/2012 43
12/4/2012 21
1/8/2013 21
2/5/2013 15
3/5/2013 20
4/4/2013 53
5/9/2013 76.6
6/4/2013 23.3
7/9/2013 431
8/13/2013 39.9
9/10/2013 386
10/8/2013 22.1
11/5/2013 57.4
12/3/2013 394
1/14/2014 136
2/11/2014 27.2
3/4/2014 12.3
4/9/2014 15.3
5/6/2014 12
6/3/2014 19.4
7/11/2014 34.3
8/12/2014 347
9/2/2014 30.4
10/7/2014 25.4
11/4/2014 186
12/9/2014 48.6
1/6/2015 880
2/3/2015 17.3
3/3/2015 115
4/7/2015 23.4
BDL=112DL Results
41 Std Dev.
34 Mean
149 C.V.
37 n
71
164 Mult Factor =
264 Max. Value
24 Max. Pred Cw
43
21
21
15
20
53
76.6
23.3
431
39.9
386
22.1
57.4
394
136
27.2
12.3
15.3
12
19.4
34.3
347
30.4
25.4
186
48.6
880
17.3
115
23.4
Use "PASTE SPECIAL -
Values" then "COPY" .
Maximum data points =
58
9
Copper (AL)
173.5850
113.6
1.5280
38
1.3
880.0 mg/L
1,108.8 mg/L
Date Data BDL=1/2DL Results
1 1/3/2012 86 86 Std Dev.
2 2/7/2012 60 60 Mean
3 3/13/2012 63 63 C.V.
4 4/10/2012 121 121 n
5 5/8/2012 26 26
6 6/5/2012 98 98 Mull Factor =
7 7/3/2012 29 29 Max. Value
8 8/7/2012 12 12 Max. Pred Cw
9 9/11/2012 196 196
10 10/2/2012 135 135
11 11/6/2012 63 63
12 12/4/2012 6 6
13 1/8/2013 < 10 5
14 2/5/2013 23 23
15 3/5/2013 30 30
16 4/4/2013 42 42
17 5/9/2013 61 61
18 6/4/2013 105 105
19 7/9/2013 218 218
20 8/13/2013 120 120
21 9/10/2013 95 95
22 10/8/2013 100 100
23 11/5/2013 180 180
24 12/3/2013 100 100
25 1/14/2014 160 160
26 2/11/2014 190 190
27 3/4/2014 110 110
28 4/9/2014 160 160
29 5/6/2014 210 210
30 6/3/2014 180 180
31 7/11/2014 64 64
32 8/12/2014 490 490
33 9/2/2014 170 170
34 10/7/2014 190 190
35 11/4/2014 74 74
36 12/9/2014 55 55
37 1/6/2015 51 51
38 2/3/2015 94 94
39 3/3/2015 74 74
40 4/7/2015 87 87
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use"PASTE
SPECIAL -Values"
then "COPY" .
Maximum data
points = 58
85.4598
108.3250
0.7982
40
1.14
490.0 ug/L
558.6 ug/L
nc3395-RPA20152, data
- 2 - 10/14/2015

REASONABLE POTENTIAL ANALYSIS
1
Arsenic - FW Standard
Use"PASTE SPECIAL
Values" then "COPY"
. Maximum data
points = 56
Date Data BDL=1/2DL Results
1 1/3/2012 < 10 5 Std Dev. 2.3 435
2 2/7/2012 < 10 5 Mean 4.5725
3 3/13/2012 < 10 5 C.V. 0.5125
4 4/10/2012 < 10 5 n 40
5 5/8/2012 < 10 5
6 6/5/2012 < 10 5 Mull Factor = 1.09
7 7/3/2012 < 10 5 Max. Value 13.0 ug/L
8 8/7/2012 < 10 5 Max. Pred Cw 14.2 ug/L
9 9/11/2012 < 10 5
10 10/2/2012 < 10 5
11 11/6/2012 < 10 5
12 12/4/2012 < 10 5
13 1/8/2013 < 10 5
14 2/5/2013 < 5 2.5
15 3/5/2013 < 10 5
16 4/4/2013 < 10 5
17 5/9/2013 4.1 4.1
18 6/4/2013 8.6 8.6
19 7/9/2013 < 10 5
20 8/13/2013 13 13
21 9/10/2013 5.6 5.6
22 10/8/2013 3.4 3.4
23 11/5/2013 3.2 3.2
24 12/3/2013 1.9 1.9
25 1/14/2014 1.7 1.7
26 2/11/2014 3 3
27 3/4/2014 < 1 0.5
28 4/9/2014 2.3 2.3
29 5/6/2014 2 2
30 6/3/2014 1.5 1.5
31 7/11/2014 4.4 4.4
32 8/12/2014 2.1 2.1
33 9/2/2014 8.1 8.1
34 10/7/2014 4.6 4.6
35 11/4/2014 6.2 6.2
36 12/9/2014 9.3 9.3
37 1/6/2015 < 3 1.5
38 2/3/2015 3.8 3.8
39 3/3/2015 3.1 3.1
40 4/7/2015 6.5 6.5
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
2
Arsenic - HH/WS Standards
Automatically copies
Arsenic data from FW
Standard entries
Date Data BDL=1/2DL Results
1 1/3/2012 < 10 5 Std Dev. 2.3435
2 2/7/2012 < 10 5 Mean 4.5725
3 3/13/2012 < 10 5 C.V. 0.5125
4 4/10/2012 < 10 5 n 40
5 5/8/2012 < 10 5
6 6/5/2012 < 10 5 Mull Factor = 1.09
7 7/3/2012 < 10 5 Max. Value 13.0 ug/L
8 8/7/2012 < 10 5 Max. Pred Cw 14.2 ug/L
9 9/11/2012 < 10 5
10 10/2/2012 < 10 5
11 11/6/2012 < 10 5
12 12/4/2012 < 10 5
13 1/8/2013 < 10 5
14 2/5/2013 < 5 2.5
15 3/5/2013 < 10 5
16 4/4/2013 < 10 5
17 5/9/2013 0 4.1 4.1
18 6/4/2013 0 8.6 8.6
19 7/9/2013 < 10 5
20 8/13/2013 0 13 13
21 9/10/2013 0 5.6 5.6
22 10/8/2013 0 3.4 3.4
23 11/5/2013 0 3.2 3.2
24 12/3/2013 0 1.9 1.9
25 1/14/2014 0 1.7 1.7
26 2/11/2014 0 3 3
27 3/4/2014 < 1 0.5
28 4/9/2014 0 2.3 2.3
29 5/6/2014 0 2 2
30 6/3/2014 0 1.5 1.5
31 7/11/2014 0 4.4 4.4
32 8/12/2014 0 2.1 2.1
33 9/2/2014 0 8.1 8.1
34 10/7/2014 0 4.6 4.6
35 11/4/2014 0 6.2 6.2
36 12/9/2014 0 9.3 9.3
37 1/6/2015 < 3 1.5
38 2/3/2015 0 3.8 3.8
39 3/3/2015 0 3.1 3.1
40 4/7/2015 0 6.5 6.5
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
-1-
nc3395-RPA20152, data
10/14/2015

REASONABLE POTENTIAL ANALYSIS
21
Iron
Date Data BDL=I/2DL Results
1 1/3/2012 2.69 2.69 Std Dev.
2 2/7/2012 1.87 1.87 Mean
3 3/13/2012 1.66 1.66 C.V.
4 4/10/2012 1.18 1.18 n
5 5/8/2012 0.726 0.726
6 6/5/2012 0.758 0.758 Mult Factor =
7 7/3/2012 0.633 0.633 Max. Value
8 8/7/2012 1.99 1.99 Max. Pred Cw
9 9/11/2012 2.29 2.29
10 10/2/2012 3.8 3.8
11 11/6/2012 0.896 0.896
12 12/4/2012 1.19 1.19
13 1/8/2013 1.2 1.2
14 2/5/2013 0.7 0.7
15 3/5/2013 0.761 0.761
16 4/4/2013 0.696 0.696
17 5/9/2013 1.53 1.53
18 6/4/2013 2.54 2.54
19 7/9/2013 2.3 2.3
20 8/13/2013 3.6 3.6
21 9/10/2013 1.6 1.6
22 10/8/2013 0.35 0.35
23 11/5/2013 2.62 2.62
24 12/3/2013 0.542 0.542
25 1/14/2014 0.715 0.715
26 2/11/2014 3.34 3.34
27 3/4/2014 0.387 0.387
28 4/9/2014 0.479 0.479
29 5/6/2014 1.5 1.5
30 6/3/2014 1.3 1.3
31 7/11/2014 2.82 2.82
32 8/12/2014 3.12 3.12
33 9/2/2014 3.02 3.02
34 10/7/2014 1.48 1.48
35 11/4/2014 1.3 1.3
36 12/9/2014 1.32 1.32
37 1/6/2015 0,671 0.671
38 2/3/2015 1 1
39 3/3/2015 0.79 0.79
40 4/7/2015 1.02 1.02
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
Use "PASTE SPECIAL
Values" then "COPY"
. Maximum tlata
points = 68
0.9656
1.5596
0.6191
40
1.11
3.800000 mg/L
4.218000 mg/L
- 5 -
nc3395-RPA20152, data
10/14/2015

IWC Calculations
Facility: Hexion Inc.
NC0003395
Prepared By: Yang Song
Enter Design Flow (MGD): 0.016
Enter s7Q10 (cfs): 0.6
Enter w7Q10 (cfs): 7
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/l)
IWC (%)
Allowable Conc. (ug/I)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
0.6
0.016
0.0248
17.0
0
3.97
428
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS)
200/100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
25.19 Upstream Bkgd (mg/l)
IWC (%)
Allowable Conc. (mg/l)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable' Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
4. BAT for Minor Domestics: 2 mg/I (summer) and 4 mg/I (winter)
5. BAT for Major Municipals: 1 mg/I (year-round)
0.6
0.016
0.0248
1.0
0.22
3.97
19.9
7
0.016
0.0248
1.8
0.22
0.35
447.8
Fecal Colifor_m
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
NPDES Server/Current Versions/WLA; TB 1/16/2009

Song, Yang
From: Song, Yang
Sent: Tuesday, September 22, 2015 4:23 PM
To: 'Buller, Thomas'
Cc: Grzyb, Julie
Subject: RE: Additional Information Request for Hexion Inc. NPDES Permit Renewal
Hello Tom,
I have reviewed the additional information you sent to me yesterday. Again, I appreciate your input on it. Here are
several things I would like to know further:
c o y .t,t Gt p ;. S t
-Short C form/Item 7 : What is the flow rate for water softener? Whether th 1 ' 1 MGD is the combination of RO unit
and water softener? Do you run RO unit and water softener separately o inseries?
-Item 11: I understand you changed the frequency of discharge to continuous flow. However, what are the discharge
frequency for different sources? I had notes showing several numbers and please concur or correct me based on your
records.
Frequencies of discharge: Z �� _,C�yam © co��.�
- CTs: run 24 discharge several times per day;
-RO Unit: discharge 5 times/ w� • lac tty
-Water Softener: 5 times rJ i; 3 r v‘- S.-84ve4-61 /a(
- Fire Tank Blow Down: once/week Pvk,i Cy k t,,,o,�-p r, /
Also, in order to have a representative sample from the outfall 002, could you double check that the sampling can be
conducted when all sources of wastewater discharge at the same time? b� —k-- 24ve �ctf
Cl3t,��,� +.v{�� b20�Gtx�t'�r sc�tGi.�v Y6cl�lJc�
-Item 17: I remembered we talked about the cooling tower cleaning chemical's and you mentioned only hydrogen
peroxide is being used. Could you double check no other chemicals may be involved in this process and discharged from
outfall 002?-,C2 r'r .'^h` C /- /, 38 )
Please let me know if you have any questions. I will be in the office tomorrow morning; however, I will be on vacation
several days and will not be back until next Thursday (Oct.lst). If you have urgent permit questions, please contact my
mentor, Julie Grzyb, at 919-807-6389.
Thank you! - . - — ' = • . - E '
Yang
From: Buller, Thomas [mailto:[e-mail]]
Sent: Monday, September 21, 2015 4:47 PM
To: Song, Yang
Subject: RE: Additional Information Request for Hexion Inc. NPDES Permit Renewal
e 'Fig -Flo -cz e
I've attached the request for informa3ton response. A certified mail copy was also sent today. Thanks,
Yang,
Tom Buller
Cerra l t f D c- f e4rP . -�
1

t { h f . a4, 6 i c-04s _
GLV^
G
C.:-orti ce re_emiAe4,17-9
(7-1 0 vi
Jt_Lt_ .-pc,t44/1 t-agto-Kgi 6.et `cey

Form 2C
Part HA: Water Balance
Mr oth•✓r Losses
I' Eosperadve ►
aasl MGD
0.014 MGD
each
o. 01 o M6c
03310,
Livingston Creek ►
0,014 MGD
Livingston Creek •
0.014 MGD
'vingston Creek s,
0.014 MGD
in0ston Creek ►
0.014 MGD
on Cr. =k
Cooling Tower
#2
Blowdcwn
TetatiO
0Lk _ b. P)v�ose +o ctr limn,.coo rAt. Permit
0.0027 MGD
Evaporative-1.�ll
r
0 MI M00
Blowdown jr
..-
0.0027 MGD
Evaporative losses
0 D11MGD
Blowdown J
0.0027 MGD
Evaporative lines
0.011 MGD
Blowdown
0.0027 MGD . ._
Evaporative Losses
0.a11 MGD ►
Blowdown
0.0027 MGD
Evaporative Liras
0011 MGD
Blowdown
Carving Tower
#7
Cooling Tower
#10
Cooling Tows
#11
(Bak -Back)
Cooling Tows
#12
(Oak -Back)
S ,
Notes:
1. Assumed concentration factor of 5 for cooling
tower flow estimation.
2. Assumed blowdown rate is the same for each
cooling lower.
3. The RO Unit Is not operated continuously. When
operated. the rejectttowrate is 0.002 MGD, as noted
in figure. The annual RO reject flaw is approximately
110,000 gallons.
Hexion Specialty Chemicals, Inc.
Acme, NC Facility
00.1 MAP
6% 2 rill
d.olo
wbegy MGD
(.0$l‘AVIJ
0.0027 MGD,
''a r•
County Water "
0.004 MGD
Uvingston Creek
0.0003 MGD
Regenerant
0.0003 MGD
(6eMaaxj
tlmdr oune1er
enO.Reverse
Osmosis Unit
Fire Water
Tank Blowdown
Reject
0.002 MGD
Slowdown
Water Softener
0.0003 MGD
Regenerant
0.0003 MGD
4.
4 1-�*�.4-Ji )mow
t't,r1,(rAvffihC,.
© . 3 P,-*Pcs.e
pl-vc2s5 (ti?ct .-t-
0.0�3 if t
AllaWMGD V �tr ..®0
--(- w,e r s Q,t own
OUTFALL 002
Discharge to Uvingston Cre►ek
i
't0 e
o(.b(,e rwll
•
Lt,I011.-"`t Of
,Ql.vvt t of -{',t-
411QQ7

HEXION.
September 21, 2015
Forest Products Division
ACME OPERATIONS
333 Neils Eddy Road
Riegelwood, NC 28456-9570
Mr. Yang Song
1617 Mail Service Center
Raleigh, Nc 27699
Re: Permit NC0003395 Request for Additional Information
Dear Mr. Song:
RECEIVED/DENR/DWR
SFP '- I- A15
water Quality
Permitting Sectior
This letter is in response to the Request for Additional Information for the renewal of Permit #
NC0003395("Permit"). The attached NPDES Permit Application — Short Form C-Minor
Industrial update addresses each of the items about which you requested information. In addition,
this letter verifies in writing that Cooling Tower #1 (Oak -Bark) has been physically disconnected
from the discharge line and that the PVC line has been capped with a PVC cap and sealed. No
discharge can occur from Cooling Tower #1 and, as a result, this discharge should be removed
from the Permit.
We appreciate your assistance with the renewal of this Permit for Outfall 002. If DWR requires
additional information to process this modification, please contact me at 910-830-2757.
Sincerely,
HEXION, INC.
ijc(
Ronald Bazine
Site Leader
piAv
Enclosures: NPDES Permit Application — Short Form C — Minor Industrial
002 Water Balance

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number
1. Contact Information:
Owner Name
Facility Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
Hexion Inc.
NC0003395
Please print or type.
RECEIVED/DENR/DWR
SEP 'A: /015
Water Quality
Permitting Sectior
Acme Facility
333 Neils Eddy Road
Riegelwood
North Carolina 28456
910-655-2263
910-655-9671
[e-mail]
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road
City
State / Zip Code
County
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
4. Ownership Status:
Federal ❑ State ❑
Private ❑ Public ❑
Page 1 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
5. Standard Industrial Classification (SIC) code(s):
6. Number of employees:
7. Describe the treatment system List all installed waste treatment components with capacities,
describe the processes that generate wastewaters. If the space provided is not sufficient attach a
separate sheet of paper with the system description.
Several utility water sources from Hexion's site are discharged through Outfall 002. The
sources and their respective potential flow rates are listed below:
• Cooling Tower Slowdown (0.0027 MGD from each of the five cooling towers)
• Reverse Osmosis Reject (0.002 MGD)
• Firewater Tank Slowdown (0.0003 MGD)
Process wastewater from the facility is discharged to Columbus County POTW through
IUP Permit 001 and is not included in this permit application.
8. Is facility co eyed under federal effluent limitation guidelines? No El Yes ❑
If yes, specify the category?
9. Principal product(s) produced:
Principal raw material(s) consumed:
Briefly describe the manufacturing process(es):
RECEIVEDIDENRIDWR
01
Water Duality
Permitting Sectior
Page 2 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
10. Amount of principal product produced or raw material consumed
List specific amounts consumed and/or units of production over the last three nears
Product Produced or Raw Material
Consumed
(AVERAGE)
Product Produced or Raw Material
Consumed
(PEAK)
per Day
106,667 lbs Hexamine
142,500 lbs Hexamine
per Month
3,200,000 lbs Hexamine
4,275,000 lbs Hexamine
per Year
38,400,000 lbs Hexamine
42,800,000 lbs Hexamine
Based on monthly production numbers from 2012-2014
11. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: Duration:
12. Types of wastewater discharged to surface waters only
Discharge
Flow
(GALLONS PER DAY)
Sanitary - monthlly average
0
Utility water, etc. - monthly average
16000
Process water - monthly average
0
Stormwater - monthly average
0
Other - monthly average
Explain:
0
Monthly Average
total discharge (all types)
16000
13. Number of separate discharge points:
Outfall Identification number(s)
14. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Page 3 of 5
C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
15. Effluent Data [for new or proposed discharges]
Provide data for the parameters listed. Temperature and pH shall be grab samples, for all other parameters 24-hour
composite sampling shall be used. If more than one analysis is reported, report daily maximum and monthly average.
If only one analysis is reported, report as daily maximum.
NOTE: Permittees requesting renewal should complete the table ONLY for the parameters
current! u monitored. Summarize the past 3 nears of effluent data.
Pa ameter
Daily
Maximum
Monthly
Average
Units of
Measurement
Biochemical Oxygen Demand (SODS)
14
3.02
Mg/1
Chemical Oxygen Demand (COD)
NA
NA
NA
Total Organic Carbon
NA
NA
NA
Total Suspended Solids
NA
NA
NA
Ammonia as N 1
3.74
0.54
Mg/1
Temperature (Summer)
31
24.9
0C
Temperature (Winter)
25
13.9
0C
pH
8.71
7.74
Units
Fecal Coliform (If
present)
sanitary waste is
NA
NA
NA
Total Residual Chlorine
used)
(if chlorine is
26
7.7
Ug/1
The values in the table have been derived from the DMRs submitted between July 2015 and
August 2013.
16. List all permits, construction approvals and/or applications (check all that apply and provide permit
numbers or check none if not applicable):
Type Permit Number Type
Hazardous Waste (RCRA) NESHAPS (CAA)
UIC (SDWA) Ocean Dumping (MPRSA)
NPDES Dredge or fill (Section 404 or CWA)
PSD (CAA) Other
Non -attainment program (CAA)
Permit Number
17. List any chemicals that may be discharged (Please list and explain source and potential
amounts.)
Page 4 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
18. Is this facility located on Indian country? (check one)
Yes ❑ No ❑
19. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
gowticy 601 iv
SITE LEAT,/L
Printed name of Person Signing Title
_-J61
Signat re of Applicant
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable
by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section
1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both,
for a similar offense.)
Date
Page 5 of 5 C-MI 10/08

Evaporati e Losses
Livingston Creek rnnlinn Tnz,nr Blowdown
0.014MGD
Livingston Creek
0.014MGD
0.0027MGD
tive-Losses---
Blowdown
0.0027MGD
Losses
Livingston Creek rnnlinn Tnuiar Blowdown
0.014MGD "y" 0.0027MGD
ative Losses
Livingston Creek
0.014MGD
Livingston Creek
0.014MGD
Cooling Tower
#11
Blowdown
0.0027MGD
r--Evapocjtive Losses
County Water
0.004 MGD
Blowdown
0.0027MGD
Water Softener
And Reverse
Osmosis Unit
(Silar)
Reject
Livingston Creek Fire Water
Tank Blowdown
0.0003 M G D
0.002MGD
Blowdown
A
0.0003MGD
Outfall 002
Discharge to Livingston Creek
0.0016 MGD
Notes:
1. Assumed concentration factor of 5 for cooling
tower flow estimation.
2. Assumed blowdown rate is the same for each
cooling tower.
3. The RO Unit is not operated continuously. When
operated, the reject flowrate is 0.002 MGD, as
noted in figure. The annual RO reject flow is
approximately 110, 000 gallons.

ATA
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
July 23, 2015
Mr. Ronald Bazinet, Site Leader
Hexion Inc.
333 Neils Eddy Rd
Riegelwood, Niarth Carolina 28456
Subject: Request for Additional Information
NPDES Application NC0003395
Hexion Inc.
Dear Mr. Ronald Bazinet:
Donald R. van der Vaart
Secretary
The Division has reviewed your application for the subject permit. As I discussed with Mr. Tom Buller,
Regional EHS Manager, on Tue., 7/21/2015, the Division will need some updated information on the
facility in order to complete our review in accordance with N.C.G.S. 143-215.1 and 15A NCAC 2H.0105.
In reviewing Hexion's application form, NC Form C-MI-for minor industrial facilities, please update your
answers to questions 1, 7, 10, 11, 12, and 15. The form can be found on the DWR website at the
following link: http://portal.ncdenr.org/web/wq/swp/ps/npdes/permitapps.
Specifically, please provide the following information:
1. Item 1 — Contact Information. Please provide up-to-date facility name, contacts, and ownership
information.
2. Item 7 — Describe the Treatment System. The Division needs an updated schematic flow chart which
identifies all wastewater sources to Outfall 002 and the estimated flow volumes for each source. Mr.
Buller has identified that cooling tower #1 (belongs to Oak -Bark) has been taken off-line. Has the
discharge line from this tower been eliminated or completely sealed? In order for this discharge to be
removed from the permit, please verify in writing that no discharge from tower #1 can occur. If this
discharge cannot be sealed off or separated from Hexion's wastewaters then it cannot be removed
from the permit and DWR will need written confirmation as to which company is solely responsible
for violations from Outfall 002.
3. Item 10 — Amount of Principal Product Produced or Raw Material Consumed. Provide updated
production numbers for the most recent three years (2012, 2013, and 2014).
4. Item 11 — Frequency of Discharge. Please update information on discharge frequency and duration for
Outfall 002.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Internet: www.ncdenr.gov
An Equal Opportunity \Affirmative Action Employer— Made in part by recycled paper

5. Item 12 — Types of Wastewater Discharged to Surface Waters Only. Please provide updated
wastewater types and corresponding flow volumes.
6. Item 15 — Effluent Data. Please update the effluent data for the parameters currently monitored.
If no response is received within 60 calendar days [per 15A NCAC 2H.0107(b)], the project will be
deactivated and withdrawn from our review process and the documents recycled. If you have any
questions or need additional information, please contact Yang Song at [phone] or email me at
[e-mail].
Sincerely,
,j.
Yang Song, Environmental Engineer
NPDES Complex Unit
Division of Water Resources/NCDENR
Attachments:
cc: Tom Buller, Regional EHS Manager, Hexion Inc. (ecopy)
NPDES file