NCS000533_HISTORICAL WITH APPLICATION_20150810

STORM WATER DIVISION CODING -SHEET
PERMIT NO.
DOC TYPE
❑ FINAL PERMIT
❑ MONITORING INFO
�K APPLICATION
❑ COMPLIANCE
❑ OTHER
DOC DATE
❑ w, 5- d Q, I b
YYYYM M DD

Conway, Jean
From:
Conway, Jean
Sent:
Tuesday, August 11, 2015 9:03 AM
To:
'Brandon Sproles'
Cc:
Miller, Carol; Sams, Dan; Georgoulias, Bethany
Subject:
RE: Stormwater Permit renewal Silar NCS000533
Hi Brandon,
I spoke with Bethany Georgoulias in the Raleigh office regarding renewing your permit and she said that they no longer send out
the renewal packages but for you to send in your forms for renewal when you can and they will process them.
Just to let you know, they are backlogged on getting out the renewals out as they are stretched pretty thin for personnel right
now. So, even if the permit does expire, you should continue to abide the permit conditions until the new one is issued.
As for the tiered monitoring requirements for CU and ZN, an inspection by our office will need to be conducted and the regional
supervisor, Dan Sams, would need to approve any relief from monthly monitoring or changes to the tiered monitoring
requirements.
Carol Miller is the inspector for that county and her contact information is carol.miller ncdenr. ov 910-796-7313.
1 will talk to her about the site and get her up to speed on the issues you are dealing with.
Let me know if you need more information in the meantime.
Jean Conway
From: Brandon Sproles [mailto:[e-mail]]
Sent: Monday, August 10, 2015 5:32 PM
To: Conway, Jean
Subject: Stormwater Permit renewal
Importance: High
Hi Jean,
I hope all is going ok for you. I am at the EH&S school in Raleigh and attended the Stormwater class. I had written down in my
calendar when I took over the EH&S that we would receive a renewal packet specific to our permit, however, I have not
received anything and our permit is set to expire 10-31-2015.
I can get the required information ready this week and in the mail. Will that be ok or do I need to continue to wait on the
packet? I just don't want our permit to expire.
Along those lines, what (if anything) can be done to get us back on quarterly sampling since our Zn and Cu totals are going to
remain above benchmarks.
Thank you so much for your help
Brandon
Brandon-Sproles
Environmental Safety and Health Manager
Silar Laboratories
333 Neils Eddy Road
Riegelwood, NC 28456
p(910)-655-4212 ext.101
f (910-655-8201)
[e-mail]

Conway, Jean
From: King, Morella s
Sent: Monday, April 20, 2015 11:48 AM
To: Conway, Jean; Sams, Dan
Cc: Gregson, Jim; Robbins, Susanne; Mattison, David; Bennett, Bradley; Georgoulias, Bethany; Miller, Carol
Subject: RE: Groundwater question
Jean, Dan
Let me find out if we are responsible for those wells.
Thanks,
Morel !a
Morelia Sanchez King
[e-mail]; (P)910 796 7218
From: Conway, Jean
Sent: Monday, April 20, 2015 11:42 AM
To: Sams, Dan
Cc: Gregson, Jim; King, Morella s; Robbins, Susanne; Mattison, David; Bennett, Bradley; Georgoulias, Bethany; Miller, Carol
Subject: FW: Groundwater question
Da n,
am not sure where to direct Mr. Sproles for his groundwater monitoring question (see email below).
This is the Wright Chemical/OakBark/flexion/Sitar site in Columbus county that is involved in Superfund cleanup and that we had
(unsuccessfully) tried to arrange a site visit with central office folks.
Anyone on the cc list that may have any input, it would be great if you can respond.
I hate to leave him hanging again.
Thanks, Jean
From: Brandon Sproles [mailto:[e-mail]]
Sent: Monday, April 20, 2015 11:21 AM
To: Conway, Jean
Subject: RE: Groundwater question
Hi Jean,
I just wanted to follow up on this to see if you could help point me in the right direction.
Thanks
Brandon
From: Brandon Sproles
Sent: Wednesday, April 15, 2015 8:42 AM
To: '[e-mail]'
Subject: Groundwater question
Hi Jean,
I have a quick question. Since Oak Bark Corp still owns all the land out here, they are responsible for the Groundwater
monitoring, this is 2 times per year. Two of the wells are on the Silar Production site, MW06 and MW28. Sherrill Environmental

performs the sampling and reports. The December report showed an increase of contaminants. We did an investigation and
found that drain line had been compromised. The drain was repaired, capped, and taken out of service. We just received our
last monitoring report ( March Samples) , and there was a noticeable decrease (%20). The problem has presumably been
addressed. I was advised by Sherrill to issue a notification of release to the local state office and I am not quite sure what to do.
Can you provide me some guidance on that.
Thank you,
Brandon
Brandon Sproles
Environmental Safety and Health Manager
Silar Laboratories
333 Neils Eddy Road
Riegelwood, NC 28456
p(910)-655-4212 ext.101
f (910-655-8201)
[e-mail]
z

Conway, Jean__
From: Georgoulias, Bethany
Sent: Wednesday, March 19, 2014 10:07 AM
To: Mattison, David
Cc: Bennett, Bradley; Conway, Jean; Pickle, Ken; Sams, Dan; Gregson, Jim; Belnick, Tom; Moore, Cindy
Subject: RE: Wright Chemical Corporation, Riegelwood NC
Attachments: NCS000533_Silar_2013-AnnualSummary.pdf
Hi Dave,
Thanks for touching base with us about the old Wright Chemical site. We have the set of NPDES Stormwater permits you are
looking for (these different/separate from NPDES wastewater permits, that many people just refer to as "NPDES"—although
both the stormwater and wastewater discharges are under the scope of that federal program).
The relevant permits we have are NCS000533 (Sitar), NCS000532 (Oak Bark), and NCS000156 (flexion, the original permit
number assigned to Wright Chemical Corporation). There is a lot of paper in these files, and they are in my office. What's the
best way to make those available to you?
Please contact Tom Belnick in the NPDES Wastewater Permitting Program of DWR for information about the wastewater permit
for the old Wright site. He will point you to the staff member most familiar with the wastewater permit. I have also copied Jim
Gregson, the Water Quality Program Supervisor in the Wilmington Regional Office, who is familiar with the site and past
compliance issues (both wastewater and stormwater).
From a stormwater perspective, these sites have been challenging. Jean Conway (formerly in DWR, now in DEMLR with us) of
the Wilmington Region recently forwarded copies of their annual monitoring summary for 2013, and there are several samples
with very high concentrations of chemicals. Stormwater permits do not have limits like wastewater permits, but we do impose
"benchmarks." Samples above benchmark values force the permittee to seek out and rectify problems in the drainage area to
that outfall. These facilities have also been performing aquatic toxicity testing under the stormwater permit. It's very unusual
for us to include that requirement in a stormwater permit, but historically these were very contaminated areas. DWR's Water
Sciences Section (Aquatic Toxicology Branch under Cindy Moore) should have records of those results.
I have attached the stormwater monitoring data from 2013 that Jean sent. There were some very high values in late 2013, and
we have to work out with our Wilmington Office about how to respond to those. It would help us to know in what capacity
your program will be dealing with these sites. Maybe there is an opportunity to work together to address the significant issues
before us. A big dilemma for our program is how to address stormwater discharges that are so contaminated, they should really
be considered wastewater and treated appropriately. We will have to work with DWR to address any water quality standard
violations resulting from these discharges.
Could you give us some background on this project and your involvement?
Also, let me know how you want to review the NPDES stormwater permit files that I have. I'm in the Archdale Building and am
happy to make them available to you. I'm not sure what parts you would need copied for your own reference —it may be easiest
to come over and take a look through them. Monitoring data that are not in those files would have been sent to Central Files
(and archived to State Archives if a few years old) or to the DWR Aquatic Tox Branch.
Thanks,
Bethany
Belheiny Georgotdias, Environme nial Eiagineer
NCDENR / Division of Energy. Mineral, and i_and Resources
Stomi,water Pennitting Program
1612 Mail Service Center, Raleigh. NC 27699-1612
5 12 N. Salisbury Street. Raleigh, NC 27604
919 / 807-6372 (phone). 919 / 807-6494 (fax)
Websile: hn://pgrta1.ncdenr.org/web/ir/storniwater
E-mail correaporrdence to and front !Iris uddre ss incrr he subject to the North Carolinu l'uhhe Records lair and nrur he disclosed is Hurd parties.
1

From: Bennett, Bradley
Sent: Monday, March 03, 2014 3:20 PM
To: Georgoulias, Bethany
Subject: FW: Wright Chemical Corporation, Riegelwood NC
Bethany,
Could you help me get these permits and other information to send to David.
m
Bradley Bennett
Stormwater Permitting Program Phone: [phone]
NC Division of Energy, Mineral and Land Resources Fax: [phone]
1612 Mail Service Center Email: bradley.ben [e-mail]
Raleigh, NC 27699-1612 J Web: http:/Iportal.nedenr.org/weblk/stormwater
Email correspondence to and from this address may be subject to public records laws
From: Mattison, David
Sent: Monday, March 03, 2014 2:49 PM
To: Bennett, Bradley; Kegley, Geoff
Cc: Bateson, James; Lown, David; Zimmerman, Jay; Risgaard, Jon
Subject: Wright Chemical Corporation, Riegelwood NC
Bradley & Geoff,
Jay Zimmerman and Jon Risgaard indicated that I should contact you so that I could get a copy of any stormwater or NHS
permit for the Oak -Bark Corporation/Momentive/Silar facility (formerly known as the Wright Chemical Corporation) located in
Riegelwood NC as well as any monitoring results and compliance history.. I am the project manager for the Wright Chemical
Corporation NPL (Superfund) Site. I have been tasked to assess the Site to best determine the scope of the remedial
investigation without infringing upon other program's jurisdiction. Please feel free to contact me if you have any questions or
concerns.,
Thanks,
Dave
David B. Mattison
Environmental Engineer
NC DENR Superfund Section
F,
NCDENR
Physical Address:
Cubicle 3104F
DENR Office Building
Green Square Complex
217 W Jones Street
Raleigh NC 27603
Mailing Address:

NCS0005 33
to 10 CDPJ
' r 1
A&ZA
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue. Coleen H. Sullins Dee Freeman
Governor Director Secretary
STAFF REVIEW AND EVALUATION
NPDES Stormwater Permit
Facility Name:
Sitar, LLC.
NPDES Permit Number:
NC5000533
Facility Location:
333 Neils Eddy Rd, Riegelwood, NC (Columbus County)
Type of Activity:
CHEMICAL MANUFACTURING
SIC Code:
2869
Receiving Streams:
See.Figure 1
River Basin:
Cape Fear River Basin, Sub -basin 03-06-17
Stream Classification:
C; SW
Proposed Permit Requirements:
See attached draft permit.
Monitoring Data:
See Table 1
Response Requested by (Date):
Central Office Staff Contact:
Return to: Brian Lowther, [phone]
Special Issues:
Issue
Rating Scale: 1 easy to 10 hard
Compliance history
6
Benchmark exceedance
7
Location (TMDL, T&E
species, etc)
5
Other Challenges:
• Acute Tox
8
Difficulty Rating:
26/40
Special Issues Explanation:
• This site is part of a larger site which was owned by Wright Corporation. In December 2006 a major
portion was sold to Hexion Specialty Chemical. The sale transferred part of the facility to Hexion and the
remaining part became Oak -Bark Corporation. This remaining part included Sitar. Hexion originally asked
to transfer the permit with all of the stormwater outfalls. In November 2008, Hexion applied for a
separate permiw,hich left out 4 existing outfalls (SW001, SW002, SW005, and SW007). On April 22, 2009
OBC sold Sitar to Monomer Polymers which has outfalls SWO01, SW002, and SW005.
o outfalls-and responsibilities and permits need to be defined for each company.
■ Hexion's stormwater outfalls are 003, 004, 006, 008, and 009 (from 2008 application).
• Oak -Bark Corp. manufacturing area drains to stormwater outfall 007.
Page 1 of 8

NCS000533
■ Silar areas drain to stormwater outfalls 001, 002, and 005. j
0 3 Permits will be issued for Hexion, Oak -Bark and Silar.
o The site has had past problems with SW and WW issues.
Description of Onsite Activities:
• . Silar LLC (a division of MPD Holdings) manufactures Organosilicon compounds and Fine organics
using batch processes.
• The Silar production facilities in Acme, NC and Scotia, NY are primarily engaged in the manufacture
of organosilanes, silicones and adhesion promoters for use in pharmaceutical, biomedical devices,
electronics, industrial and R&D markets. Silar's manufacturing facilities are ISO 9002 certified and capable
of producing gram and kilo -lab scale through multi -ton at the Acme facility. (From www.silar.com)
Documents Reviewed:
NPDES Stormwater Permit Application Materials
• National Heritage Program (NHP) Threatened and Endangered Species Database
• Central Files
• EPA Sector -Specific Permit, 2008
• 2010 303(d) List, 2008 draft
• 2005 Cape Fear Basinwide Plan
• TRI database
History:
• - June 5, 2009: Application received
Page 2of8

NCS000533
t Y
NCS000533
H
'&W scam 1. 4, coo
Figure 1: Map of Facility
Silar LLC
Latitude: 340 19' 43" N
Longitude: 780 12' 5" W
County: Columbus
ReceiWng Stream: LNingstcn Creek
Scream 0as$: C; Sw
Sub -barn: 03-06-17 (Cape Fear River Bain)
Facility Location
Page 3 of 8

NCS000533
1Wj
Central Office Review Summary:
1. Owner's Other Permits: No other permits for Silar LLC were in BIMS. However, on the same site Hexion
Specialty Chemicals, Oak -Bark Corporation, and Wright Corporation exist.
• Hexion - NCS000156 Stormwater —Expired, NCO003395 Wastewater, WQ0022324 Pump and Haul
• Oak -Bark — NCS000532 Stormwater in review, WQ0003361 Wastewater Recycling, WQ0005699
Surface Disposal of Residual Solids
Wright Corp. -- SW8000828 State Stormwater, WQ0001771 Surface Irrigation- Inactive, WQ0015551
Land Application of Residual Solids- Inactive
2. General Observations:
Three Outfalls:
• 001- 3X 19' 69" -7912' 2" — 211, 220 sq ft with 17, 670 sq ft impervious. Silar Drum Warehouse:
treatment is housekeeping training and monthly audits by EHS.
• 002- 34 19' 71" -7912' 8" — 24,158 sq ft with 24,158 sq ft impervious. Silar and Fine Chemical Lab:
treatment is housekeeping training and monthly audits by EHS.
• 005- 34 19' 76" -7912' 6" — 43,560 sq ft with 15,119 sq ft impervious. North Side of Silar Plant: treatment
is housekeeping training and monthly audits by EHS. Relocated Drum Rinse Station to a contained Area.
• No significant spills or leaks occurred in the last three years.
• Potential Pollutants: Chlorine, Magnesium, Chloroform, Methylene Chloride, Tetrachloroethylene,
Toluene, Allyl chloride, Diethylamine, Dimethylamine, Styrene, Triethylamine, Trimethylamine, Vinyl
acetate, and Xylene.
3. Impairment: Livingston Creek is not on the 2010 303(d) list but it was on the 2008 draft list for turbidity.
Basinwide Plan lists Livingston Creek as have low.dissolved oxygen as.a stressor. The Basinwide Plan has no
recommendations for Livingston Creek.
4. Threatened and Endangered: The natural heritage virtual workroom shows there two federally protected
species within a two mile radius of the facility: Acipenser brevirostrum (Shortnose Sturgeon) and Lysimachia
asperulifolia (Rough -Leaf Loosestrife).
5. Location: C; Sw
6. Analytical Monitoring Notes: See Table 1. Data submitted with application.
• BOD, COD, TSS, Ammonia, TKN, Total Nitrogen, and Formaldehyde were over the benchmarks.
• Based on the SIC of 2869 the industry is covered in the EPA Multi -Sector General Permit under Sector C
Chemical and Allied Products Manufacturing, and Refining. The sector does not recommend any specific
monitoring.
• The reviewer recommends including BOD, COD, 155, Ammonia, TKN, Total Nitrogen, and Formaldehyde
into the renewed permit because they are potential pollutants and previous samples in the application
were above our current benchmarks.
• The reviewer recommends including acute toxicity monitoring. This recommendation is based on the site
having many potential pollutants and poor housekeeping by the former owners as well as being requested
by the regional office. See attached rationale document for Acute Toxicity for more details.
Qualitative Monitoring Notes: Visual observations were done at Outfalls 002, 005 and 007 three different
times. Two times there was no rain but no other outfalls were identified. That last time was done during rain
and it was noted that there was no outfall from this source. All runoff was retained in the small retention
pond south of the outfall. It was observed there was no oil sheen.
Page 4 of 8

NC500053.3
Table 1: Analytical Monitoring
Sample Date
Total
Flow
(MGD)
Precipitation
(in)
Duration
(hours)
pH
BOD
COD
TSS
NH3
TKN
NO3+ NO2
Total N
Lead
Formaldehyde
Hexamine
Total P
6-9 su
30 mglL
120
mgA-
100
mglL
7.2
mg/L
20 mglL
10 mg1L
30 mg1L
0.03
mg/L
Benchmark:
0.5 mglL
Benchmark:
25,000 mg1L
Benchmark:
2 mg/L
Outfall 001
6/12/2007
0.083
0.91 i
0.67
6.3
12 1
87
49
4.2
6.5
5.8
12.3
0.012
0.366 ic1.0
0.82
Outfall 002: Lab Weir
3/21 /2006
0.023
0.83
0.48
7.53
F. 22fi ,
#;$q2
l 1 9,
�1�37
(_,4B
2
: 48
Q.01
1 3;, y
235
4/312006
0.018
0.92
0.37
6.35
r.�274;
4Q52
91�6�
�86
3.9
;,f9,9
0.007
,c.r
217
8/812005
0,052
1.42
1.1
7.07
i �82 ,
V ikLEP ;
48
URPRR
5W.7
1.1
28.1
0.004
0.085
3
11 /16/2006
0.027
0.75
0.57
7.56
53o,`
745a
49
3Q 9
; 381
1.3
39 4
0.003
17 4
22,5
2/112007
0.048
6,08
1.02
7.44
�$67?O
93
t ti4.
(477
1.6
4"s:
0.005
`'
24.8
611212007
1 0.0431
0.67
0.91
1 6.5
ft0
$3D:
6�
?�9t}t'1
1.3
j3;
0.009
> yl
d . .
0.17
Outfall 005: Shane Weir
3/21/2006
0.029
0.83
0.48
7.71
Wf' '^r'
aW "14
. :;t1,,'*
;: (
4_ _
i.1
. U E-,, -
0.011
' ; "(;
46
4/3/2006
0.022
0.92
0.37
5.96
j 3,
.. _.
1;
23
',�s, �3 '
2.3
26.3
0.003
-.. _
" `q�1'
44
8/8/2006
0.065
1.42
1.1
6.58
2,; "
"" ° `
38
•�
, I}•
0.6
20.6
0.005
0.05
2
11 /16/2006
0.034
0.75
0.57
, t 46'
24
54
13
$�1.
10.1
1.7
11.8
<0.003
= :26
3.96
2/1/2007
0.061
6.08
1.02
8.6
16
60
28
;,99
10.6
1.1
11.7
0.003
5
6.63
2/112007
0.061
6.08
1.02
8.6
16
71
26
9 241
9.42
3.7
13.1
0.004
,7�Q7�
4.51
0.18
6/12I2007
0.054
0.67
0.91
6.46
9
68
4
6.3
6.3
2.3
11.8
0.007
�j' 3i$9 }' r
8.15
0.54
y` r" Over Current $enchmark
Data Not Collected
Page 5of8

NCS0005 33
Revised Permit Recommendations: Analytical Monitoring:
1. BOD, COD, TSS, Ammonia, TKN, Total Nitrogen, Formaldehyde and pH have been added to the permit because
they are potential pollutants and were above the benchmarks in the data submitted with the application.
Parameters in this permit include all chemicals reported by the applicant for the May 2009 sampling event,
except for lead.
• BOD and COD are appropriate for the various organic chemicals stored and used at the facility, and the
site as a while has had numerous instances of elevated levels in the stormwater discharge (Outfalls 002,
003, 004, 0::9, & 006).
• TSS is indica::ve of housekeeping or other problems. TSS is also appropriate for a discharge to receiving
waters plagues with turbidity problems.
• Ammonia, TKN (organic nitrogen), and Nitrate/Nitrite are above benchmarks in the submitted analysis
and are pres^nt with this industrial activity. Nitrate/Nitrite was not above in the submitted data but in
data from the Hexion file.
• Total Lead is not proposed in the monitoring scheme because levels were well below the 0.03 mg/I .
benchmark, and it does not appear to be present in the materials here. Noted that there were very few
benchmark exceedances in data collected from other outfalls at this site between 2000-09.
• Total Copper, Zinc, and Manganese included because the potential pollutants and want to be consistent
with Hexion and Oak Bark.
• Hexamine and formaldehyde are included in the permit because they are potential pollutants. Samples
for formaldehyde are above benchmarks in the submitted analysis.
• pH is included because of its use as a general and immediate indicator of problems (especially with acid
storage at this facility), as well as its importance in interpreting other data such as metals.
• Total Petroleum Hydrocarbons (TPH) is included because several oils are stored at this site, and fork-lift
traffic may introduce such materials into the discharge. An alternative to just Oil and Grease (O&G), TPH
can be measured with the same method EPA has approved for O&G: Method 1664, but using Silica Gel
Treated N-Hexane Extractable Material (SGT-HEM) and an additional step that removes polar/fatty non -
petroleum bas;,d material from the sample. This method is not compound -specific but is less costly, and
still provides an estimate of petroleum hydrocarbon concentration. This parameter is better targeted for
petroleum based materials than O&G, which can include animal -based fats and oils.
• Acute Toxicity has been included for this site due to concerns about multiple toxic sources as well as
onsite-unknown chemical mixing and resultant unknown environmental toxicity. The ACUTE TOXICITY
APPENDIX A: ACUTE TOXICITY TESTING FOR STORMWATER OUTFALLS has been include at the end of the
permit text. (set- r+7� At- -7-nx {GC 1�t l`�t3 e-ctoCt.,
2. All analytical monitoring is quarterly during a representative storm event as defined in Part II Section B. This
frequency is higher than the standard semi-annual, but is consistent with proposed monitoring in draft
permits for the other manufacturers at this site (Hexion and Silar). The frequency is also appropriate given
DWQ's elevated concern about stormwater contamination from past activities. Because the retention pond
discharges more rarely, Oak -Bark will probably not see flow from its one outfall for many of those quarters.
3. Benchmarks for analytical monitoring are included with this draft permit. Exceedances of benchmark values
require the permittee to increase monitoring, increase management actions, increase record keeping, and/or
install stormwater Best Management Practices (BMPs) in a tiered program. If sampling results are above a
benchmark value, or outside of the benchmark range, for any parameter at any outfall then the facility should
follow the Tiered response guidelines.
4. The permittee is required to collect all of the analytical and qualitative monitoring samples during a
representative storm event as defined in Part It Section B. Qualitative monitoring is required to coincide.
5. The flow reporting requirement is not included, per DWQ revised strategy. Total rainfall is in the permit,
however, and can be used with impervious area information to estimate flow. Impervious area detail is
Pabc 6 of 8

NCS000J33
,r required to be documented in the permittee's SPPP.
6. Vehicle maintenance monitoring included, if ever applicable at this site (proposed quarterly to be consistent
. with other monitoring, which would occur at the same outfall).
Discussions with permittee: Peter Yurgel/ Plant Manager, 910-655-6980, 9/22/2009
1. Visual observations in the application describe the only outfalls as 002, 005, and 007 but the outfalls are listed
as 001, 002, and 005. Are these the same outfalls? Outfolls are 001, 002 and 005. 007 is on the Oak -Bork
Facility.
2. Outfall 007 drains to a small retention pond. Does the pond ever discharge? It is an Oak -Bork Facility.
3. the application says samples will be taken for pollutants from EPA Form 2F, tables 2F-2, 2F-3 and 2F-4. Have
those been forwarded to us yet? Samples for all these parameters have not been taken. Samples are taken far
parameters in the old Hexion permit. They are working with Linda Willis on this.
4. Do you have vehicle maintenance onsite? No.
5. What is your SIC code? 2869
Page 7 of 8

NCS000533
Recommendations: Based on the documents reviewed, the application information submitted on June 5, 2009
sufficient to issue an Individual Stormwater Permit.
Prepared by (Signature) C G.� �� Date C/xa/.
Stormwater Permitting Unit Supery Date V2-7A0
for radle /lennett
Concurrence by regional Office • ' / ' f� 1 _ Dat
RO Water Quality Supervisor � _ C- . t� /l`.l-ti.� .-� n. z}i1 Date
Regional Office Staff Comments (attach additional pa�,ts as necessary)
.,�/ r� +r�k f.l�yrLc c� ti �f Ccc
!'LL.L .(.n-�i.'.�.�11cL� .iQ-�-�- �..e1.�• Cil L.�-t� 1zc..7:F-e;hL/
•�
u1a i.
�cft],?�iL: •-L.� --(-L 1c..-L�-1-L:.�k.-�-C 1.L:C.;_,, (.�-s'�'-F �(.4'iS�L? .�u�.-��t.L. 1Qi_:-nt��-� J
' TLC
�lrt�J Cu'�rs�c�-ci.2rsn �el C'�"7'11212rL i e tie
._ljWt,L-, /1'C-C:-P���
��/'-`L�C7:Z�C]L- •-•t-iz�-i�'�-�lt��-� �k-,Lu �P-�-�. �1.�.-1t�� s2..i�C1-il,� // `�`'� - / / .
C�si_C�--Z_.,r�..�: C�1�a-c��t ��'%�c�'r,c�.t� �cy�(J�'-•-z�a-�-c��; �.-a- a,�. � �1�c�.�.'c � °�'.�r,
� d��� ti-2.f tl �. �:{�..-L�e ��^ c�i.��-fit;-�t� Cv1CL��.�.tL• rz,r.tk�7�f :�Lz�'�-.
, J
IA
Cy�ct' 2ti� yut=,� is _Y c aL
A
4G cCi�l�c' S 1rt�lCi �ftti C /LC2.'L(3 C: Li Lr��•L•' c� j � CLc'��ce 4 cr ` �G�3'r��%
i 2 CtQ LV/ '(• L/L�%tLzC C �{Q �' �C` rti•`J'i: tL-V L1 !Z.�'1GL�-+ 1� L. '`/�2_• {��i�-7+L^�'
Pagc 8 of 8

Rationale for Using Acute Toxicity as a Stormwater Test Parameter for Permitting
NC DWQ Stormwater Permitting Unit
NC DWQ Regional Offices had inquired about adding an acute toxicity testing parameter to some
individual stormwater permits due to concerns about multiple toxic sources, onsite unknown chemical
mixing and resultant unknown environmental toxicity, and chemical sources that may not have an
appropriate benchmark available.
After speaking with DWQ central office staff, regional office staff, environmental laboratory staff, and
stormwater staff at other US states, DWQ SPU CO staff made the decision that adding acute toxicity may
be appropriate as a test parameter in some cases.
Rationale for Acute Toxicity Testing & Appropriateness of use:
• Other states such as CT, SC, MO, and CA are using Acute Toxicity Testing (usually Whole Effluent
Toxicity (WET) Tests) in stormwater individual (and some general) permits as a test parameter
and have found it to be useful parameter for a number of reasons (detailed below).
Some states (CT) have found that using Acute Toxicity is also a useful parameter to educate
permittees and the public on the concerns of contaminants on the impact on aquatic life. In
this way the permittee understands the correlation between release of contaminants and
aquatic toxicity more clearly rather than calling levels "bad."
• NC DWQ also believes it could be a useful parameter in cases where:
o DWQ cannot feasibly include all test parameters in a'permit or ask the permittee to test
specific chemicals stored on site (because of financial concerns, large numbers of
parameters, or other concerns), even if we know what all the chemicals are;
o DWQ may not have benchmarks available for all parameters that may be discharged
from the site;
o DWQ may not be able to predict environmental effects from mixed chemicals or
chemicals produced by reactions when mixed that may be discharged from the site;
o DWQ may not be able to know all chemicals that may be discharged from the site or
these chemicals, or information about them, may be proprietary in nature;
o DWQ may be concerned that the toxicity of some parameters (such as copper or other
metals) may be difficult to predict due to variable environmental influences such as
hardness, pH, etc.
DWQ feels that the use of both a 48-hour pass/fail test and a 48-hour multi -dilution test is more
conservative and will provide more information.
o DWQ feels that although it is unlikely the organisms would be exposed to 100%
stormwater for more than 24 hours, organisms may be exposed to dilute stormwater for
longer than 24 hours. We feel that we would obtain more useful information using 48-
hour tests.
o After data are collected, if runoff is passing at 24 hours but is failing at 48 hours, the
permit can be reassessed to see if a 24-hour exposure better reflects exposure at that
particular site.
o Neither the NC acute pass/fail procedure nor the EPA multi -concentration procedure
requires that organism mortality be checked at 24 hours during a 48-hour test; however,
DWQ may easily request labs to perform this.

o As the NC DWQ toxicity testing relies on benchmark screening (for stormwater
discharges rather than a limit, use of a more conservative test with benchmarks does
not have the same impacts as a test with limits.
o EPA Region 5 (including TX) uses a 24-hour LC50 (multi -concentration) and Washington
state uses a 24-hour test (with Hyallela, not Ceriodaphnia). However, SC, CT, NJ, and
MO all use a 48-hour test.
Method:
• Organism: Ceriodaphina dubia
• Frequency: Once per year testing is recommended.
• Dilution: Initial test is test of 100% stormwater effluent. Any subsequent follow up tests are
more specific multiple dilution tests. Both tests are 48-hour tests. See Acute toxicity permit
language Appendix A for more details.
• Control: Specified in the methods.
• Acute Test Type: See Acute toxicity permit language Appendix A for more details.

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
May 27, 2010
Individual NPDES Stormwater Permit Renewal Transmittal Cover Page
To: Wilmington Regional Office, Linda Willis
Subject: NPDES Stormwater Permit No. NCS000533
Silar, LLC
Riegelwood, NC (Columbus County)
Attachment Description
®
Staff Report -
Draft Permit
®
Renewal Application
RECEIVED
JUN 01 2010
BY:
Please provide comments on the facility, draft permit, and staff report and.sign/return
if acceptable.
Return to Brian Lowther at the Central Office by June 28, 2010.
Brian Lowther
Division of Water Quality
Stormwater Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Wetlands and Stormwater Branch
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] S FAX: [phone] Customer Service: 1-877-623-6748
Inlernet: www.oviaterquality.org
An Equal Oppouunity 1 kimiat+ve Action Employer
one
NorthCaroltna
�11vaturallY

AIMNC Certification No.402 Laboratory Re opt
SC Certification No. 99012 p
NC Drinking Water Cert. No. 37735 11/16/09
wn sw rc. Aw"Cal s enAorwWrIal Sa udl
United Technologies Carrier Project Name: Stormwater Discharge Client Sample ID: 001
Attn: Mike Lutz Project ID: Stormwater NCG030452 Prism Sample ID: 261011
9701 Old Statesville Rd. Sample Matrix: Water COC Group: 01009488
Charlotte, NC 28269 Time Collected: 10/15/09 13:00
Time Submitted: 10/15/09 15:50
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Datefrime ID
Sample preparation:
1020 mL 1
10 mL
608
10/22109 8:00 smanivanh P25875
Surrogate
% Recovery
Control Limits
\
Tetrachlom-m-xylene (TCMX) 75
40 - 134
\
De chlorobiphenyf (DCB)
59
13 - 186
Purneable Organics by CINIS
1,1,1-Trichloroethane
BRL
mg/L
0.00 0.000
1
624
10/19/09 19:49 Iwitry
045293
1,1,2,2-Tetrachloroethane
BRL
mg/L
0.0060 01
1 •
624
10/19/09 19.49 bMtry
Q45293
1,1,2-Trichloroethane
BRL
mg/L
0.0050 .00 8
1
624
10119/09 19:49 Wtry
Q45293
1,1-Dichloroethane
BRL
mg/L
0,005 0.00011
1
624
10119/09 19:49 hvitry
Q45293
1,1-Dichloroethene
BRL
mg/L
0.0 0 0.00009
624
10/19/09 19:49 Wtry
045293
1,2-Dichlorobenzene
BRL
mg/L
0 050 0.0001
1
624
10/19/09 19:49 hMtry
045293
1,2-Dichloroethane
BRL
mg/L
0050 0.00006
1
624
10/19/09 19:49 twitry
Q45293
1,2-Dichloropropane
BRL
mg/L
0.0050 0.00012
1
4
10/19/09 19:49 Iwitry
Q45293
1,3-Dic:hlorobenzene
BRL
mg
. 0,0050 0.00011
1
62
10/19/09 19:49 Wtry
045293
1,4-Dichlorobenzene
BRL
/L
0.0050 0.00011
1
624
10/19/09 19:49 Wtry
Q45293
2-Chloroethyl Vinyl Ether
BRL
g/L
0.010 0.00044
1
624
10119/09 19:49 Wtry ,
045293
AcroWn
BRL
mg/L
0.10 0.00086
1
624
10/19/09 19:49 Wtry
045293
Acrylonitrile
BRL
mg/L
0.10 0.00073
1
624
10119/09 19.49 Iwitry
045293
Benzene
BRL
mg/L
0.0050 0.00007
1
624
10/19/09 19:49 Wtry
Q45293
Bromodichtorom ethane
BRL
mg/L
0.0050 0.00008
1
624
10/19/09 19:49 Iwitry
045293
Bromororm
BRL
mg/L
0.0050 0.00015
1
624
10/19/09 19:49 Wtry
045293
Bramomethane
BRL
mg/L
0.010 0.00019
1
624
10/19/09 19A9 Iwitry
Q45293
Carbon Tetrachloride
BRL
mg1L
0.0050 0,00009
1
624
10/19/09 19.49 Wtry
Q45293
Chlorobenzene
BRL
mg/L
0.0050 0.0001
1
624
10119109 19:49 Wtry
Q45293
Chloroethane
BRL
mg/L
0.010 0.00026
1
624
10/19/09 19:49 Wtry
045293
Chloroform
BRL
mg1L
0,0050 0.00006
1
624
10/19/09 19:49 Iwitry
Q45293
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.Q. Box 240543 - Charlotte, NC 28224-050
,Phone: [phone] - Toll Free Number: 1-8001529-6364 - Fax: [phone] Page 2 of 7

NCS000533
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
STAFF REVIEW AND EVALUATION
NPDES Stormwater Permit
Facility Name:
Silar LLC.
NPDES Permit Number:
NCS000533
Facility Location:
333 Neils Eddy Rd, Riegelwood, NC (Columbus County)
Type of Activity:
CHEMICAL MANUFACTURING
SIC Code:
2869
Receiving Streams:
See Figure I
River Basin:
Cape Fear River Basin, Sub -basin 03-06-17
Stream Classification:
C; Sw
Proposed Permit Requirements:
See attached draft permit.
Monitoring Data:
See Table 1
Response Requested by (Date):
Central Office Staff Contact:
Return to: Brian Lowther, [phone]
Special Issues:
Issue
Rating Scale: 1 eas to 10 hard
Compliance history
Rate 1-10
Benchmark exceedance
Rate 1-10
Location (TMDL, T&E
species, etc
Rate 1-10
Other Challenges:
• List them here
Rate 1-10
Difficui Rating:
Sum /40
Special Issues Explanalion: 3 t 4 �
• This site was larger site, Wright Corporation. In Dec er 2006 a major portion was sold to Hexion
Specialty Chemical. The sale transferred part of the fa i ity to Hexion and the remaining part became Oak -
Bark Corporation. This included Silar. Hexion o ' �nally asked to transfer the permit with all of the
stormwater outfalls. in November 2008, H 'on applied for a separate permit which left out 4 existing
outfalls (SW001, SW002, SW005, an SW00 . On April 22, 2009 OBC sold Silar to Monomer Polymers
which has outfalls SW001, SW002, and SW005.
Description of Onsite Activities:
• Silar LLC (a division of MPD Holdings) manufactures Organosilicon compounds and Fine organics
using batch processes.
Pagel of 8
r

NCS000533
• The Silar production facilities in Acme, NC and Scotia, NY are primarily engaged in the manufacture
of organosilanes, silicones and adhesion promoters for use in pharmaceutical, biomedical devices,
electronics, industrial and R&D markets. Silar's manufacturing facilities are ISO 9002 certified and capable
of producing gram and kilo -lab scale through multi -ton at the Acme facility. From www.silar.com
Documents Reviewed:
• NPDES Stormwater Permit Application Materials
• National Heritage Program (NHP) Threatened and Endangered Species Database
• Central Files
• EPA Sector -Specific Permit, 2008
• 303(d) List, 2008 draft, 2006 final
• 2005 Cape Fear Basinwide Plan
History:
• June 5, 2009: Application received
Page 2 of 8

NCS000533
Figure 1: Map of Facility
�.ff Illy! A .I�•p�p,[,/Kj rI�I.,
,6l 1.
fir•.`
IJ� 4/ tJf
4.0ufIL J!'
',
�%"'a GYM ly f" �.-'.aN ✓
1l��I i.'-.a. "
r♦<
GClY"
rraM FMC.. _
.t vai i>I}`l`
• f I1 L I `4i ate_ `L� ''•b� F.', {>i�\•: '1 ��
, {�ff {�]l' ; i
1 ,r _ .yam --. "t'>„��^C`�— J� �--5''�-r �.--��1 „�v� �a_1• i S. �`c-- :' - _ �
'✓ •i,�.l��C�. .a Ki! � � l . "`� `4.�r } � t m �'!. '�! tV ,2 E.� �.i�..�w..,� C. � ,•L'�G1 ►�� # . -
`�. -h-� � �� \�1 � —: _ _ s f_ 1 airy,,, � �r� -... -•a a�;� III �. [% �� 1 �. �% � f���i % _ � � ,` .' `,
S€lar LLC
i �'r
1 ._. ,Y,. `3Sa room ,++[•.
�ti; ff .'�. 4 Jy'9 �'d t ,7, [ - -••M r rv�r t_-/rlp �(fr { •. '...,.
��J'
t
♦'�`'-� � r�,�..�+ ',ter �'�'��...--L� }�,� r��\� /i'6"" � ,.4 � k:
Ai,,...1 .r•' I ��14 r �^' -�, °_
I't]V IMv\ '/"i'.. \fr yj ENV 4�I� '1. :y^ ~ �, P`I,\�� lr'{'fya ; i aa•�S N 1
�`11P-. rb� -,�•. v i f 1��' �`7 T �i `� r�� I ��.! "'±� `i y., I'!1� �-.
S� _
f r ' ty\
vF�� .a-r ' [ ! �•. �•r 4 w`i'. '' -�-f ���.'=^ ..— �- •L .. _ •" 1?'-y� Corr'! ! x- i r
Ivi 1r ` f :Fr�� {{�r'1s'y 1• I�,a� , ,,- �a��.
VW
If
�j�Tr •� -..€{ !!f
� )jl ={� Il 7�� � S,`.- w, ( ` Jl.. �f'
4z3 f r- -`t'a .� ',Y y^•. fe-1}� It.:
NCS000533
Silar LLC
Latitude: 34° 19' 43" N
N
Longinide: 780 125" W
�r
��' li
Camty: Columbus
Receiving Stream: L€+,ingston Creek
Stream Class: C; Sw
5
Sub -basin: 03-06-17 (Cape Fear River Basin)
Facility Location
NbWScale 1;24,000
Page 3 of 8

NCS000533
Central Office Review Summary:
1. Owner's Other Permits: No other permits for Silar LLC were in BIMS. However, on the same site Hexion
Specialty Chemicals, Oak -Bark Corporation, and 7� -e-NA-L�
• Hexion - NCS000156 Stormwater —Expired, NCO003395 Wastewater, WQ0022324 Pump and Haul
• Oak -Bark — NCS000532 Stormwater in review, WQ0003361 Wastewater Recycling, WQ0005699
Surface Disposal of Residual Solids --
• Wright Corp. — SW8000828 State Stormwater, WQ0001771 Surface Irrigation- Inactive, WQ0015551
Land Application of Residual Solids- Inactive
2. General Observations:
Three Outfalls:
001- 3419' 69" -78'12' 2" — 211, 220 sq ft with 17, 670 sq ft impervious. Silar Drum Warehouse:
treatment is housekeeping training and monthly audits by EHS.
002- 34719' 71" -787 12' 8"— 24,158 sq ft with 24,158 sq ft impervious. Silar and Fine Chemical Lab:
treatment is housekeeping training and monthl audits by EHS.
005- 34 19' 76" -787 12' 6" — 43,560 sq ft }with 15,119 sq ft impervious. North Side of Silar Plant: treatment
is housekeeping training and monthly audits by EHS. Relocated Drum Rinse Station to a contained Area.
• No significant spills or leaks occurred in the last three years.
• Potential Pollutants: Chlorine, Magnesium, Chloroform, Methylene Chloride, Tetrachloroethylene,
Toluene, Allyl chloride, Diethylamine, Dimethylamine, Styrene, Triethylamine, Trimethylamine, Vinyl
acetate, and Xylene.
3. Impairment: Livingston Creek is not on the 2006 303(d) list but is on the Draft 2008 303(d) list for Turbidity.
Basinwide Plan lists Livingston Creek as have low dissolved oxygen as a stressor. The Basinwide Plan has not
recommendations for Livingston Creek.
4. Threatened and Endangered: The natural heritage virtual workroom shows there two federally protected species
within a two mile radius of the facility: Acipenser brevirostrum (Shortnose Sturgeon) and Lysimachia
asperulifolia (Rough -Leaf Loosestrife).
5. Location: C; Sw
6. Analytical Monitoring Notes: See Table 1. Data submitted with application.
• BOD, COD, TSS, Ammonia, TKN, Total Nitrogen, and Formaldehyde were over the benchmarks.
• Based on the SIC of 2869 the industry is covered in the EPA Multi -Sector General Permit under Sector C
Chemical and Allied Products Manufacturing, and Refining. The sector does not recommend any specific
monitoring.
• BOD, COD, TSS, Ammonia, TKN, Total Nitrogen, and Formaldehyde have been added to the permit
because they are potential pollutants and were above the benchmarks in the data submitted with the
application.
Qualitative Monitoring Notes: Visual observations were done at Outfalls 002, 005 and 007 three different times.
Two times there was no rain but no other outfalls were identified. That last time was done during rain and it
was noted that there was no outfall from this source. All runoff was retained in the small retention pond south of
the outfall. It was observed there was no oil sheen.
Page 4 of 8

NCS000533
Discussions with permittee: Peter Yurgel/ Plant Manager, 910-655-6980, 9/22/2009
1. Visual observations in the application describe the only outfalls as 002, 005, and 007 but the outfalls are listed as
001, 002, and 005. Are these the same outfalls? Outfalls are 001, 002 and 005. 007 is on the Oak -Bark
Facility.
2. Outfall 007 drains to a small retention pond. Does the pond ever discharge? It is an Oak -Bark Facility,
3. The application says samples will be taken for pollutants from EPA Form 2F, tables 2F-2, 2F-3 and 2F-4. Have
those been forwarded to us yet? Samples for all these parameters have not been takers. Samples are taken for
parameters in the old Hexion permit. They are working with Linda Willis on this.
4. Do you have vehicle maintenance onsite? No.
5. What is your SIC code? 2869
Page 7 of 8

NCS000533
Recommendations: Based on the documents reviewed, the application information submitted on June 51. 2009
sufficient to issue an Individual Stormwater Permit.
Prepared by (Signature) Date
Stormwater Permitting Unit Supervisor Date
for Bradley Bennett
Concurrence by Regional Office Date
RO Water Quality Supervisor D
Regional Office Staff Comments (attach additional pages as necessary)
Page 8 of 8

1�8
4.7
14
227
FIR1N5$,
0.005
5�C};rR27`
0.005 0,005
A�335 11.7
13.2
1530
6,76
1275
JR NR
2�7
692
297.5
1509
41,2
101
13.2
1530
0�.1 :ffiq
0.016 Q O
0.005 0.014
t .298 34.4
0.35
11
0.27
54
0.68
1
0.23
2
0.22
5
ff.87
9
0.23
5
M9-1-56
43
25
55
0.22
7
21
0.35
7
II 15.88
0.8
5
5
5
10
5
16
6. 5
6.6
3.89
8
2.28
9
.8
1

✓✓ _
I(
ill
6.73
"' 113",�:
39;
7
95
5.6.'
60.8
1.
0,009
6.76
: „ 97 ,--_�..;212
�1
11
5
4
.7
1.64
0.002
6.55
6
33
25
2.5
3.6
2.5
0.006
7.53
NR NR
NR
NR
NR
NR
NR
8.82
44
12.4
20.4
2.76
0.002
7.72
&
21
70
114
0.22
0.002
7.45
22
264
46
33.4
f3.6
0.2
0.002
nr
nr nr
nr
nr
3 nr
0.006
6.59
8
212
NR
NEt NR
NR
NR
NR
R
NR
nr
nr nr
nr
nr
n- M
nr
0.002
6.62
21
156`
21
3�1.9
1.9
3.19
0.003
NR
NR N,
NR
NN
NR
NR
6.5
12
87
49
4.2
6.5
5.84
0.012
7.1
NR
70
NRn26
69,9
79.2
11.1
0.002
7.44
21
33
70.4
66.6
14.9
0.002
5.82
88
4-50
83.8
119
0.004
0.004
7.01
17
75
13
62.7
5.6.9
17.3
0.002

Ik
?)DD
0040%
lg;o --�O
��
v s
,H6'xipnT,:,
3
5/11/2009
7.39
251 1601
10 715'18 70A
48.5
0.002
Hexion
3
unknown 2006 or 2007
NR
lik NR
128 nr n,r
0.018
e-'
Hi xib
4
2/l/2007
6.9
1570:,
241 109 OQ
0.003
:H x1on
6/12/2007
6.83
� 34 491
22 3861: 70 A
0.005
�
4
10/24/2007
6.61
N Rti,,��,,' NR
'
:N N R
--Hexi6n,.
NR,
Hexion
4
4/23/2008
6.07
11478,.r]�,�-.-,�/31 5 53 11 1150 t6
9
0.002
Hexion,"-�
4
2/18/2009
6.55
- 200 126$0
34A
0.002
Hexi0h..
4
5/11/2009
6.69
=7742084
1
0.004,95"
Hexioh
4
unknown 2006 or 2007
nr
n r I" Nk,
0
.005
Sitar`
5
3/16/2000
8
go 31
4
0.009
Sitar
5
9/18/2000
7.6
i31'
` a8
4'
4 5,
1
0.005
Sitar"154
5
11/14/2000
8.5
16 0-466
11 13
0
0.01
Sitar
5
2/12/2001
7.7
20 6
20 28
1
0.004
71
ts"i
5
5/20/2001
7.05
8 47 5
0.003
-Sid.
5
8/28/2001
7.4
-�146
146 63:,,-:1.7
1
0.025
Silar k v
5
1/14/2002
7.9
3i1 1168
32 26 29
2
0.003
5ilar
5.
5
2/21/2002
7.6
999 247
pl,
52 4
A5,
3
0.005
Silas e
5
4/10/2002
7.2
MI i
188 [7
48 20
1
0,006
Sitar
5
6/19/2002
7.8
42 17D
70 45
1
0.009
Sitar
5
11/11/2002
901
20 55
63 4 4
0
0.005
5
1/29/2003
7.97
23 16
14 1 16
1
0.003
5
5/22/2003
7.55
6 30
11 4 4
2
0.003
5
10/8/2003
8.35
18 42
18 4 7
4
0.003
Sitar
5
11/19/2003
7.89
17 30
4 5 6
1
0.003
S i I a
5
2/11/2004
7.96
15 52
9 4 7
1
0.003
5
5/30/2004
8.87
21 a1
7 13
1
0.006
-silarnz
5
2/1/2007
8.6
16 50
28 11
1.1
0.003
,SilAr'
5
6/12/2007
6.46
9 68
4 6.3 9.5
2.3
0.007
5
10/24/2007
N R 55 1231
21 1C 1 12.9
1.2
0.006
5
4/23/2008
6.92
14 =8
2.83
0.002

I
Hexion S eciality chemicals, Inc.: SW Monitoring Summary
4
/ Outfalls: Hexion: 003, 004, 006, 008, 009 Oak Bar : 007
Silar: 001, 002, 005
Current Bend 6-9 30 120 100 7.2 20 10 0.03.
Who Currently Owns the
Outfall Outfall Date tainfalotal floc pH BQD,, COD TSS NH3 TKN NO2 + NO3, Total I:61V'
Sitar'(&`Some Hexion water) 2 3/16/2000 7.8 44 143 33 247 24 2 0.006
pl r (& Some Hexion Water) ' 2 9/18/2000 7.65 385 A 2740 38 " 645 72$ 8 0.014
M ...
Sitar (&!Some.Hexion Water) „ 2 11/14/2000 7.2 202 -2650 '' 168 564 606 5 0.015
Sitar'(&Some Hexion- water) 2 2/12/2001 8 y 69 3 556 61 1224 132 2 0.01
Silarl(&Some Hexi©n' Water)' 2 5/20/2001 7.3 67 1 5 29 .E m 49 ; 55 ' � ; "r.15 0.004
Sitar {8t some Hexion water) 2 8/28/2001 - 7.4 j111'� k 506 78� 71' � 8a 2 0.019
Sitar (& Same Hexion water) 2 1/14/2002 8 ) 7��E 39A 91 :• 61 3 66 2 0.00$
Sitar {&some Hexion water} 2 2/21/2002 7.2 415� '2045 50 `470l 522 3 0.003
R. a ✓� � '��%s ' '�x a �d
Sitar {&So`me Hexion water) 2 4/10/2002 7.3 234 923 1861�T8� 212 3 0.014
Silar (& 5orne Heaton Water), & 2 6/19/2002 7.7 `85515 76 � 59 78 4 0.007
Sitar (& Some Hexion Water) , 2 11/11/2002 8.76 �� �32 114 109]4 14 2 0.007
Sitar {& Some Hexion watier) t' , 2 1/29/2003 7.3 % z85 679 96 = 61 6F 2:2 a.a1
�9
Sitar {& Some Hewan Water) ' ' 2 5/22/2003 7.7 13 79 14 14 17 2 0.003
tom-.*
Sitar (& Some HexionNater) , . 2 10/8/2003 8.09 ,53 188 61 35 35 3 0.005
Sitar {& Some Hexion;Water). 2 11/19/2003 7.97 21 51 20 8 16 2 0.003
Silarh(& S.om`e Hexion-Water) 2 2/11/2004 8.29 21 99 27 3 18 0 0.003
Slur (& Snme Hexion Water) 2 5/30/2004 8 39 3 153 22 . j26 26 3 0.003
Sitar (& Svme Hexion Watei) <i 2 11/16/2006 7.56 `.< 53 245 49 3�1.z =q 38 1.3 0.003
Silas (&'Seine Hexion Water) , ' 2 2/1/2007 7.44 261 93 '" 48,481.8 0.005
Silar�(&SoineyHexionwate�) �s 2 6/12/2007 6.3 `'- 760 8730 ' " 16' 29 1954 1.3 0.009
Sitar {& Some Hexion Water),,,,. 2 10/24/2007 NR '9A x 29 59 SO 5f 1.4 0.006
Stiar{&Ysome Hexion Water) 2 4/23/2008 7.87 �� 99 327 375 k : 74, 2.55 0.003
Sitar (& Some °Hexion Whir) � 2 2/18/2009 6.87 899 $14 16:1 438_, 1.52 0.005
Sitar {&Some Hewpp.water) -E- 2 5/11/2009 6.98 '= • 15-3 �.. 6375 72 ° :,, , �1a:5 .-�� 6 1.5 0.003

M\
Hexion
3 3/16/2000
Hexion " .. •
3 9/18/2000
Hexion.
3 11/14/2000
Hexion
3 2/12/2001
Hexion
3 5/20/2001
Hexion.
3 8/28/2001
H.exio.h
3 1/14/2002
Hexion
3 2/21/2002
Hexion -
3 4/10/2002
Hexion .
3 6/19/2002
.y
Hexion
3 11/11/2002
Hexion ;
3 1/29/2003
Hexion'' °°
3 5/22/2003
'
Hexion .
3 10/8/2003
Hexion: ,
3 11/19/2003
Hexion
3 2/11/2004
Hexion
3 5/30/2004
Hexion
3 2/1/2006
MeicEon A�
3 3/21/2006
Hexion -
3 4/3/2006
Hexion;
3 8/8/2006
Hexion :
3 11/16/2006
Hex. ioA
3 11/16/2006
Hexion °
3 2/1/2007
H, exiom :
3 6/12/2007
Hexion" �'- ffi
3 6/12/2007
Hexiot'
3 10/24/2007
��
Hexian'.
3 10/24/2007
Hexion,-,
3 4/23/2008
Mex�c�n,,y
3 2/18/2009
-7w
7.35
7.7
7.4
7.6
7.1
7.5
7.6
7.7
7.1
7.2
8.12
8.11
7.31
7.32
7.36
7.46
8.95
7.05
7.12
7.16
7.44
7.28
7.05
6.71
6.96
NR
NR
3°25
343
322
254
157
95
97
137
191
16
123
.52
60
184
70
103
42
307
'162
1070
164
2110�
26.00
292
3330
62
145'
54
463
78
75
19
$04
5
1240
22
'128
5
• 34
223
431
443
5.23
1
28 110
32 112
24 54
307 1:20
13 126
17 152E
NR .. NR
7.12 209. 693
7.82 156 479
49
20
29
48
14
64
3
27
316
10
71
13
3'
46
6L-
NR
37
16
N�
Iwo
108
289'
91
650
711-
"�•27 L
739
772
67
974
1080-
.17
395
405
183
152
161
22
158
226
- 97
3.27
3S1
..
62
289
359
62
21
ry23.
-%3S
51
- '57'
'32
,23
29
1
41.
s8
.51
124
130
95
'73
119
4,65
127
171
44.
.19
104
- 11
, 1-3
112
118
;°ti 40
52
9
23
tl82
97 .
6
.$
15.2
8.9
9
10
1.7
128
131'
111
0.1
30 .'
a 339
1.0
12.1
0.47 ;
139
140
30
=NR
_. NK%. �° F. NR
18.4
249
47:1
0.81
2631
9.32

0.38
0.21
1
fri
0.46
0.18
0.05
NR
9
468
143
250
19
5
11
32
575
26
107
78
152
A
249
344
212
13.7
194
227
39
14.2
4
13.7
37.6
17.9
6.9
68.6
25.9

Forest Products
IIMOMENTIVE~ ACME OPERATIONssion
333 Neils Eddy Road
Riegelwood, NC 28456-957D
June 11, 2012
Linda Willis
NCDENR Division of Water Quality
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405
SUBJECT: Permitting Guidance — Concrete Pond
Momentive Specialty Chemicals Inc.
Acme, Columbus County, North Carolina
Dear Ms. Willis:
t ECEQVE
JUN932012
BY:
Momentive Specialty Chemicals is requesting input from the North Carolina Department of
Environment and Natural Resources (NCDENR), Surface Water Protection Division (SWPD) on a
permitting question at the above referenced facility should Momentive determine the existing Closed
Loop Recycle Permit (CLRP No. W00034775) is no longer needed. Specifically, Momentive is
conducting a pilot test of modifications to the operation implemented as part of the Lined Pond
cleaning. This modification uses an existing concrete basin in lieu of the Lined Pond for cooling
tower feed water and cooling tower water is no longer recycled back to the concrete basin. If the
pilot test successfully demonstrates the facility can operate in this fashion, Momentive will likely
petition to terminate the CLRP later this year and wants to ensure the new concrete basin water
storage and evaporation system is properly permitted before proceeding.
Background
Per the requirements of the CLRP, Momentive completed the removal of sludge accumulated in the
Lined Pond. The Lined Pond Flow Diagram (Enclosure 1) provides details of the various sources of
water previously directed to the Lined Pond and how the concrete basin was historically used at the
facility. During the period of time the Lined Pond was out of service for cleaning, facility personnel
developed methods of storm water management and cooling water system operation which
Momentive believes will allow operation without the Lined Pond in service. After discussing this with
Jim Bushardt in the Division of Water Quality (DWQ), Momentive has continued to hold the Lined
Pond out of service and use the concrete basin adjacent to the formaldehyde process area for
temporary water management to further assess their ability to safely and effectively operate in this
manner. Momentive began operating in this mode on August 29, 2011 and has continued to pilot
these new operating methods through the winter and spring seasons to verify whether to put the `
Lined Pond back in closed -loop recycle service or storm water management service.

With the operational changes, Momentive is not recycling any water from the cooling towers back to
the concrete basin. Rather, when the solids content in the cooling tower water becomes too high,
the water is removed via vacuum truck and properly disposed off -site. This modified operational
procedure is detailed in the Concrete Basin Flow Diagram provided as Enclosure 2. If after this pilot
testing period Momentive determines that operations can work using the concrete basin in lieu of the
Lined Pond and not recycling any water from the cooling towers, Momentive will likely submit a
request to the NCDENR DWQ to terminate the CLRP.
Permitting Question
Momentive is requesting clarification from NCDENR SWPD as to whether there are permitting
requirements for operating the concrete basin as a water storage and evaporation basin, which also
serves as one of the sources to provide make-up water to two cooling towers, as described on the
Concrete Pond Flow diagram (Enclosure 2). As noted on the diagram, sources of water to the
concrete basin include 30-minute storm water first flush, some process wastewater, and periodically
a pH adjusted regeneration stream off of the I/O System.
Momentive is available to discuss this permitting question with you if you feel that will facilitate your
review. Please contact Matthew Skidmore, Momentive Regional EHS Manager, at 404-353-5972,
or Jay Reid, ARCADiS, at 614-791-6106 if you have questions concerning this request, or require
additional information.
Sincerely,
107 49 1 m
oK
Ronald Bazinet
Site Leader
Momentive Specialty Chemical Inc.
Attachment: Enclosure 1: Lined Pond Flow Diagram
Enclosure 2: Concrete Pond Flow Diagram

}1
•, Ilk q
MOMENTIVE" Forest Products D
ACME OPERATIONSS10n
333 Neils Eddy Road
Riegelwood, NC 28456-9574
January 19, 2012
CERTIFIED MAIL:
NCDENR Division of Water Quality
Wilmington Regional Office
Attn: Jim Gregson
127 Cardinal Drive Extension
Wilmington, NC 28405
JAN 2 3 Z01Z
SUBJECT: NPDES Stormwater Permit (NCS000156) Tier -III Notification Letter
Momentive Specialty Chemicals Inc.
Acme, Columbus County, North Carolina
Dear Mr. Gregson:
This letter of notification is to inform the North Carolina Department of Environment and Natural
Resources, Wilmington Regional Office, Division of Water Quality (DWQ) of the updated Tier -Ili
stormwater status for the Momentive Specialty Chemicals, Inc. Acme Facility (Momentive). This
notification is required in Part II, Section B of NPDES Stormwater Permit NCS000150.
Laboratory analytical results, received December 23, 2011 and January 12, 2012, from the
November 29, 2011 and December 27, 2011 sampling events, respectively, revealed parameter
values in exceedance of permit benchmarks for the fourth occasion. These analytical results shifted
the status for stormwater outfalls SDO-003, SDO-004, SDO-006, and SDO-009 into Tier -Ill. Table 1
summarizes the Tier -III benchmark exceedances.
Momentive is also providing a summary of stormwater sampling conducted at these outfalls over the
last two years. This data is included as Appendix A. - General downward trends can be observed in
the data and indicates that actions and improvements that Momentive has taken and continues to
take are improving the stormwater quality at the site.
Table I - Tier Ill Benchmark Exceedance Summary
Momentive Stormwater Tier-tll Summary Table
Momentive
Specialty Chemicals, Inc. - Acme Facility, Riegelwood, NC
NPOES Stormwater Permit NCSU60156
Permit
NC5000156
Outfallf
Testing Parameter
Units
Benchmark
SDO-003
SOO-004
5D6006
Soil-0"
Value'
1 Z9 201
7 2 !
11129f2011
272 11
Biol2Gical 2naen De 2a BOD
L
30
>66
S9
Chemical en Demand COD
m L
120
1,270
313
Total K'eldahl Nitro en KN
m L
20
M6
386
7LT
Ammmia-Niffogen(NFi,I
mg/L
7.2
12.0
Zo.2
27.7
Formakle de
VJL
0.5
23
3.6
osso
Total Ca r
L
0,007
0.316
0.101
0.062
0.113
0.016
Total Zlm
mg1l
0-067
00219
0.217
0.243
0.976
0.096
Notes:
Samples collected 11/29/ZC11; rainfall
eventtotaf of 1.4
inches.
Samples collected 12127/2011; rainfall
event total of 0,33
inches.
—= Permit Benchmark value not exceeded.
mg/L = milligrams per liter
RED = Tier.3
Permit benchmark values, as listed in Momentive's current NPDES Stormwatef permit NC5000156, effective date November 1, 2030.

Since permit benchmarks were established November 1, 2010, Momentive has implemented
multiple corrective actions and improved general housekeeping to address benchmark exceedances
at the four representative outfalls permitted under NCS00156. These corrective measures have
contributed to an overall downward trend in parameter values at the four outfalls. A summary of
some of these actions is described below:
Summary of Stormwater Improvements
Outfa# 3 (SDO-003)
• Removal of plant and tree debris from the drainage swale above the weir improved flow
and reduced stagnant conditions above the outfall.
• Neighboring company Oak Bark ceased manufacturing of the Mintrex product in August
2011. This processing may be a possible source of metals in the sample results.
0uHa114 (SDO-004)
• Stormwater routing procedures were evaluated and modified to direct the first flush in a rain
event to a stormwater dike, rather than allowing direct flow to Outfall 4.
• The gravel drainage area above Outfall 4 was regraded and new riprap was installed to
reduce flow velocity and erosion of drainage swale.
• Rip rap installed to reduce erosion above outlet inlet.
• Neighboring company Oak Bark ceased manufacturing of the Mintrex product in August
2011. This processing may be a possible source of metals in the sample results.
Outfall 6 (SDO-006)
• General housekeeping within the drainage sub -basin has contributed to the overall
downward trend in parameter values.
Outfall9 (SDO-009)
• Leaf litter and sediment was removed and new riprap was installed at the outfall inlet to
prevent pooling behind the maintenance building.
• Neighboring company Oak Bark ceased manufacturing of the Mintrex product in August
2011. This processing may be a possible source of metals in the sample results.
Momentive continues to perform required stormwater management inspections and implement
corrective measures to address benchmark exceedances. Monthly stormwater sampling will also
continue in response to the Tier -III status.
Please contact Matthew Skidmore, Regional EHS Manager, at 404-353-5972 if you have questions
concerning this notification, or require additional information.
Sin rely,
1447 Ja�e9
Ronald Bazinet
Site Leader
Momentive Specialty Chemical Inc.
Cc: Linda Willis, Wilmington Regional Office - NCDENR

Outfall-003 (Momentive)
Momentive Outfall Comparison for 2010-2011 Stormwater Sampling Events
Momentive
Specialty Chemicals, Inc. - Acme Facility, Riegelwood, NC
2010 Sampling Events
2011
Sampling Events
Qlr-1
Qtr-2
Permit
Benchmark
Qtr-0
Qtr-1
Qtr-2
Qtr-3
Qtr-4
Nw-Dec1D
Testing Parameter
Units
3/2J2010
5/1/20
1/1712011
415/2011
9120/2011
11/2912011
12/27/2021
Value'
2010
Biochemical Oxygen Demand BOD
m L
93
28
30
NF
31
39
22
16
5
Chemical0 en Demand COD
m
245
229
120
NF
L57
136
200
78
62
Total Sus ad solids SS
47
14.0
100
NF
<2.7
53-2
52.5
13.7
8,4
Total K eldahl Nitrogen TKN
72.9
112
20
NF
139
79.1
62.0
99.9
22.6
Ammonia-Nitrogen(M-6)
36.6
110
7.2
NF
119
99.3
=13:5
ZA
h
Nitrate-Nitrogen+Nitrite (N +NOr)
11.8
1.65
10
NF
10.4
9.94
9.05
11.4
3.97
Total Phosphorus; P
NS
NS
2
NF
0.23
0.28
0.24
0.D6
0.19
Rexamine
k.x/1
62.1
23.5
25DOO
NF
33,0
c10
27.6
<10
<10
Formaldehyde
4,40
1.95
0.5
NF
2.05
1.38
4.25
0.425
0.33
E.
Total Lead
<O.OIO
c0010
0.03
NF
<oolo
<0.010
<0-010
<0010
<o.010
Methanol
NS
NS
7700
NF
<10
12.9
<10
<10
<10
Non -Polar O&G Method 1664
NS
NS
15
NF
<5
<5
<5
<S
<5
Total Copper
m L
NS
Ns
0.007
NF
0.099
1.31
O425
0.418
0. 01
Total Zinc
m L
NS
NS
O.D67
NF
0.618
0.565
0230
0hL4
0. 17
Total Residual Chlod-
L
NS
NS
0.D28
NF
cow
O.O o
0-IXt0
0
H
s.u.
6,a16.9
NF
7.62
7.33
7.60
b.g0
1.11
Rainfall
inches
0.55
0.17
NF
0.31
0.33
1.35
1,4
0.33
Tier Status
NA
NA
1-3
1 NF
I 1
1 1
2
3 1
3
Notes;
mg/L• ml0grarns per Ike,
s.u. = standard units
NA= Not Applicable
NF = No Flow
NS Not Sampled
Yellow and Bold = Value Exceeds Benchmark Value
Orange and Bald = 3rd Exceedence (Tier-2)
Red and add = 4th Exceeddence {Tier 31
' Permit benchmark values, as listed in Momentrve's
current NPDES Stonnwater permit NCS000156, effectivedate November 1, 2010.
No samples were collected for Clutfal1003 during the third quarter of 20M
Outfall•004 (Momentive)
Momentive Outfat) Comparison for 2010-2011 Stormwater Sampling Events
Momentive Specialty Chemicals, Inc. - Acme Facility, Riegelwood, NC
2010 Sampling Events
2011 Sampling Events
Qtr-1
3/2/2010
Qlr-2
6J1/2010
Permit
Benchmark
Value•
Qtr-0
Tr-1
Qt,.2
Qtrr3
Qtrd
Testing Parameter
Units
Nav-Dec
2p10
1117/2611
4J5/2011
9/20/2011
11/29/2011
12/2712011
Rinchem"! O en Demand ROD
m L
425
558
30 --
NF
362
Z43
24
>66
11111111111111111159
Chemical Oxyrer Demand COO
m L
1,270
1 200
120
Z13D
5Z3
108
1 Z70
1
Total Suspended Solids 55
m L
93
198
100
NF
170
146
46.7
19.4
69
Total K'eldahl Ntr en
myJL
299
213
20
NF
975
81
15.6
386
M
Ammonia -Nitrogen l NH,)
m L
1 78-4
35.2
T2
NF
476
1
1.4
1.1
27.7
Nitrate-Nilrrgen+Nrtnte (NO,+NO}
m L
1 5.50
161
10
NF
15,4
9.94
B41
lid
3A6
Total Phos horns P
L
NS
NS
2
NF
1.2
0-56
0.06
0,05
0.64
11-i e
L
760
140
25,000
NF
858
52
<10
00
<10
Formaldehyde
m L
48-8
11B
O.S
NF
41.Z
107
11111111117.51111111
3.6
Total Lead
m L
coil
0012
0.03
NF
<0.010
0014
c0.030
c4o10
<0.010
Methanol
m L
NS
NS
7,700
NF
96.6
26.7
-10
-CIO
<10
Non -Polar 096 Method 1664
m L
NS
NS
15
NF
<S
-5
<5
<5
c5
Total Copper
m L
NS
N5
0.007
NF
0.490
0.525
WO.093M
DA62
O.I13
Total Zinc
m L
NS
NS
D.067
NF
0.897
0.999
1111111111110.217a
JIILS!Z43=
JIML375=
Total Residual Chlorine
m t
NS
NS
0.028
NF
0,000
0.000
0-005
0
0
H
7.04
6.89
6-9
NF
7.86
7.07
7.43
7.03
7.37
Rainfall
inches
0.55
0.57
NF
0.31
0.33
1.35
1.4
0.33
Tier Status
NA
NA
1-3
NF
1
1
2
3
3
Notes:
mg1L = milligrams per liter
. = standard units
NA= Not Applicable
NF - No Fl-
N5- Not Sampled
Yellow and Bold= Value Exceeds Benchmark Value
Orange and gold - 3rd Eeceedence (Tier-2)
Red and Bold - 401 Exceeddence (Tier-31
' Permit benchmark values, as listed in Momentive's current NPDES Stormwater permit NC5000156, effective date November 1, 2010.
No samples were collected for Outfall-ON during the thlyd quarter of 2010.

O utf a l l -006 (Momentive)
Momentive Outfall Comparison for 2010-2011 Stormwater Sampling Events
Momentive Specialty Chemicals, Inc. -Acne Facility, Riegelwood, NC
2010 Sampling Events
2011 Sampling Events
Qtr1
3/2/2010
Qtr-1
6/1/2010
Permit
Benchmark
Qtr-4
Otr-1
Otr-2
Qtr-3
Qtr-4
Testing Parameter
Units
Nov -DecValue* 2010
1/17f2011
4/5/2011
9127)/2011
11/29f2011
12/27/2011
Biochemical Oxygen Demand (BOD)
mill
59
19
30
NF
4S
100
9.0
7
8
Chemical Oxygen Demand COD
mil
16g
123
120
NF
121
222
89
84
66
Total Suspended Solids S
m L
21
45
100
NF
16.7
30
16-8
15.4
15.6
Total K'eldahl Nitro en TRN
m /L
45.5
11.8
20
NF
30.6
65.4
15.7
11.4
9-2
Ammonia -Nitrogen INH)
mg/L
13.9
5.9
7-2
NF
26.9
54.2
5.5
5.0
5.5
Nitrate -Nitrogen+ Nitrae(NO,♦ NOJ
mg/L
3.36
22B
10
NF
7.41
1.66
3.93
5.44
12.5
Total Phos horns
m L
I NS
NS
I 2
NF
0.27
0.32
0.17
<0.04
0-5
Hexamine
m /L
1 30.6
12.6
1 25,000
NF
14,8
<10
-10
<10
40
Formaldeh de
m L
1A
0-146
0.5
NF
LEE
5.18
jjj0.550
0.294
Total Lead
m L
40n10
<0.010
0.03
NF
<0.010
<0.030
0010
<0.010
<0.010
Methanol
m L
NS
NS
7,7D0
NF
-10
<10
<10
<10
<10
Non-POIarO&G Methcd1664
m L
NS
NS
1s
NF
<5
<5
<5
<5
<5
Total Copper
nrgli,
NS
NS
0.007
NF
<0010
0.012
0.018
mm .D
<0.007
Total lineMil
NS
N5
0.067
NF
0.142
0.041
0.045
0.027
0.026
Total Residual Chlorine
m L
NS
NS
0.028
NF
0.0055
0.009
0.018
0.018
0.022
H
S.U.
6.91
8-82
6-9
NF
7.41
7.33
7.75
6.96
7.26
Rainfall
inches
0.55
a51
NF
0.31
0.33
1.35
1.4
0.33
er TStatus
NA
NA
1-3
NF
1
1
2
3
3
Notes
mg/L = milligrams per liler
. = standard units
NA = Not Applicable
NF = No Flow
NS = Not Sampled
Yellowand Isold - Value Exceeds Benchmark Value
0rmge and Bold - 3rd Exceedence [Ter-2)
Red and Bold = 4th Exceeddence (Tier-3)
• Permit benchmark values, as listed in Momentrve's current NPDES Stormwater permit NCS000156, effective date November 1, 2010.
No samples were collected for Outtall-006 during the third quarter of 2010.
Outfall-009 (Momentive)
Momentive Outfall Comparison for 2010-2011 Stormwater Sampling Events
Momentive Specialty Chemicals, Inc. -Acme Facility, Riegelwood, NC
2010 Sampling Events
2011 Sampling Events
permit
,° Benchmark
Value'
Qtr-4
Qtr-1
Qtr-2
Qtr-3
Qtr-4
Testing Parameter
Units
Nov- Dec 2010
1/17/2011
4/5/2011
9/20/2011
11/29/2011
12/27/2011
Biochemical Oxygen Demand (BOD)
m/L
'30--'
NF
51
32
2.0
<2
2
Chemical OxY en Demand COD
/L
120
NF
428
140
32
<20
<20
Total Suspended Solids S
L
. -1oo..
NF
252
161
22.4
5.1
16
Total Keldahl Nitrogen N
m /L
20'W
NF
14.6
9A
5.0
<0-5
1.0
Ammonia -Nitrogen (NH,)
mg/L
-7:2 --
NF
11.2
1.8
4.5
<0.2
<0.2
Nitrate-Nitmil+Nitrite(NO,+NO2)
mg/L
10''
NF
I.04
1.16
0,42
0.16
0.24
Total Phosphorus TP
m /L
2,
NF
0.57
0.17
0.07
<11.04
0.16
Hexamine
m /L
`s�::'25,000
NF
<10
<10
<10
<10
<10
Formaldeh de
/L
;'. OS ."
NF
1.48
2.13
0.140
<5
0.039
Total Lead
m /L
'0,03
NF
0.016
0.01
<0.010
<C.010
<0.010
Methanol
m /L
v7;700
NF
<10
<10
<10
-10
<10
Non -Polar O&G Method 1664)
m /L
NF
7.0
<5
<5
45
<5
Total Copper
m/L
✓e0.00Z'=>;
NF
0.136
0.151
0.007
�0:016
Total Zinc
m /L
1 v­0.067.. -
NF
0.7I7
0.324
1s0.124�
0.045
�0:096!
Total Residual Chlorine
m /L
- =-`0.020 -
NF
0.001
0.000
0.019
0.002
0
H
6-9
NF
7.42
7.00
7.23
6.73
7.04
Rainfall
inches
NF
0.31
0,33
1.35
1.4 I
0.33
Tier Status
1-3
NF
1
1
2
2
3
Notes:
mg/L - milligrams per liter
s.u. = standard units
NA = Not Applicable
NF = No Flow
NS = Not Sampled
Yellow and Bold - Value Fxceeds Benchmark Value
Orange and Bold = 3rd Exceedence (Tier-2)
Red and Bold = 4th Exceeddence (Tier-3)
I Permit benchmark values, as listed in Momentive's current NPOES Stormwater permit NCS000156, effective date November 1, 2010.
No samples were collected for outfall-009 during the third quarter of 2010,

STATE OF NORTH CAROLiNA
Department of Environment and Natural Resources
WIRO Regional Office
FILE ACCESS RECORD
SECTION SWP DATEmME 1J-" I '60P-
CY-
NAME bOuXdJqUW�REPRESENTING
Guidelines for Access: The staff of the Regional Office is.dedicated to making public recordsn our
custody readily available to the public for review and copying. We also have the responsibility to the public
to safeguard these records and to carry out our day-to-day program obligations. Please read carefully the
following before.signing the form.
1. Due to the large public demand.for fiiA acces , we request that you:call-at least a day in
advance to schedule an appointment for file review so you -can be accommodated.
Appointments are scheduled between 9.00 a.m. and :00 p:,m. Viewing time ends at 4:45
2 rn. Anyone arriving without an appointment may view the files to the extent that time and
staff supervision are available.
2. You must specify files you want to review by facility name or incident number, as
appropriate. The number of files thatyoumay review at one appointment will be iimited to
five.
-3. You may make copies of a file when the copier is not in use by the staff and if time permits.
There is no charge for 2.5 or less copies.__cost per copy after the initial.25 is 2.5 per copy.
Payment is to be made by check, money order, or cash in the administrative offices.
4. Files must be kept in the order you received them. Files may not be taken from the office.
No briefcases, large totes, etc. are permitted in the file review area. To remove, alter,
deface, mutilate, or destroy material in public files is a misdemeanor for which you can be
fined up to $500.00.
5. In accordance with GS 25-3-512, a $25.00 processing fee will be charged and collected for
checks on which payment has been refused.
5. The customer must present a photo iD, sign -in, and receive a visitor sticker prior to
reviewing files.
FACILITY NAME
.'t A
5._,
0M
Signature— N efof Firm or Business! Date
(Please attach business card to form if available)
COUNTY
19�� C-:
s S_
Time In Time Out
-# CopAs - Arnt. F&

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
August 23, 2010
Mr. Martin A. Lowry, Site Leader
Hexion Specialty Chemicals, Inc.
333 Neils Eddy Road
Riegelwood, NC 28456
�. Subject: Draft NPDES Stormwater Permit
Permit No. NC5000156
Hexion Specialty Chemicals, Inc
Columbus County
Dear Mr. Lowry:
Dee Freeman
Secretary
Enclosed with this letter is a copy of the draft stormwater permit for your facility. Please review the draft
very carefully to ensure thorough understanding of the conditions and requirements it contains.
The draft permit contains the following significant changes from this facility's current permit:
Analytical monitoring changes:
1. Analytical monitoring parameters have been added to this permit.
2, pH has been addedto the analytical monitoring requirements.
3. Representative outfall status has not been granted as of yet. Please continue to monitor all outfalls. You
may apply for Representative Outfall Status through the Linda Willis at the Wilmington Regional Office.
All arialyticaI monitoring has been set to quarterly during a representative storm event as defined is
II Section B. The permittee must also document the total precipitation for each event. If no discharge
=+' occurs during the sampling period, the permittee must submit a monitoring report indicating No I'gow'
within 30 days of the end of the three-month sampling period. Additionally, samples must be taken a
minimum of 30 days apart, as specified in the text directly above Table 2.
5. Benchmarks for analytical monitoring have been added to this draft permit. Exceedances of benchmark
values require the permittee to increase monitoring, increase management actions, increase record
keeping, and/or install stormwater Best Management Practices (BMPs) in a tiered program. For all
parameters except Acute Toxicity: if the sampling results are above a benchmark value, or outside of the
benchmark range, for any parameter at any outfall then the facility shall follow the Tier 1 guidelines
which require a facility inspection within two weeks and implementation of a mitigation plan within two
months. If during the term of this permit, the sampling results are above the benchmark values, or
outside of the benchmark range, for any specific parameter at a specific discharge outfall two times in a
row (consecutive), then the facility shall follow the Tier 2 guidelines which require a repetition of the
steps listed for Tier 1 and also immediately institute monthly monitoring for all parameters at every
outfall where a sampling result exceeded the benchmark value for two consecutive samples. For
benchmarks and sampling requirements regarding acute toxicity, please see Appendix A: Special
Conditions.
6. You are required to collect all of the analytical and qualitative monitoring samples during representative
storm events as defined in Part II Section B. Qualitative monitoring is required regardless of
representative outfall status.
7. You are responsible for all monitoring until the renewal permit is issued. See Footnote 1 of Tables 1, 4,
and 5.
Wetlands and Stormwater Branch One
1617 Mail Service Center, Ralegh, North Carolina 27699-1617 NorthCarolina
Location: 512 -8 Salisbury St. Raleigh, North Carolina 27604 Natural `�
Phone; 919$07$3IX} 1 FAX: 919-$07-64941 Customer Service: 1$77$23-674$ L 1 `
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer

Mr. Martin Lowry
Hexioh Specialty Chemicals, Inc.
Permit No. NCS000156
8. The flow reporting requirement has been removed per DWQ revised strategy. (The total rainfall
parameter is in this permit, however.)
9. Vehicle maintenance monitoring has been revised to semi-annuaIIy in order to coincide with analytical
and qualitative monitoring. Monitoring for TPH has replaced Oil & Grease. This requirement appears in
all Individual Stormwater permits, however it only applies to facilities that do vehicle maintenance. If the
facility begins vehicle maintenance during the permitted timeframe then the requirements shall apply.
Other permit changes:
1. Additional guidance is provided about the Site PIan requirements. The site map must now identik,if the
a_ receiving stream is impaired and if it has a TMDL established. It must also describe potential poll4'%-ants
in each outfall. The map requirements are stated more explicitly. And, the site plan must contain a list of
- - .,.significant spills that have occurred in the past three years and also must certify that the outfaIls have
been inspected to ensure that they do not contain non-stormwater discharges. Additional information E'
provided in Part II Section A. r
2. AdditionaI requirements for the Stormwater Management PIan have been specified in Part II Section A.
More details regarding secondary containment are provided.
3. Additional requirements for the Stormwater Pollution Prevention Plan have been specified in Part 11
Section A. The plan must also be updated annually to include a list of significant spills and to certify that
the outfalls do not contain non-stormwater discharges.
4. The facility must now implement a semi-annual Facility Inspection Program of the site's stormwater
management controls as specified in Part II Section A.
5. Information regarding the No Exposure Exclusion has been added to this draft permit. If industrial
materials and activities are not exposed to precipitation or runoff as described in 40 CFR §122.26(g), the
facility may qualify for a No Exposure Exclusion from NPDES stormwater discharge permit
requirements. Additional information is provided in Part I Section A.
6. In addition to submitting two signed copies of DMRs to Central Files, a separate signed Annual Summary
DMR copy must be submitted to the local DWQ Regional Office by March 1 of each year. See Part 11,
Section.E: Reporting Requirements for more information.
7. Additionally, DWQ Form AT-2 for Acute Pass/Fail Tests (original) is to be sent to the Environmentai
Sciences Section annually. See Appendix A: Special Conditions for more information.
PIease submit any comments to me no later than thirty (30) days following your receipt of the draft.
Comments should be sent to the address listed at the bottom of this page. If no adverse comments are
received from the public or from you, this permit will likely be issued in about two months.
If you have any questions or comments concerning this draft permit, contact me at [phone] or
[e-mail]
Sincerely,
OLI�1_
Jennifer Jones
Environmental Engineer
Stormwater Permitting Unit
cc: Wilmington Regional Office, Division of Water Quality, Linda Willis
Stormwater Permitting Unit
DWQ Environmental Science Section, Cindy Moore
Attachments I AUG 2.5 2010

i
NCS000156
.STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE STORMWATER UriDER THE
TIONAL POLLUTANT DISCHARGE ELUFUNATION
p
In compliance with the provisions of North Carolina�General c�.atute 143-215.1, other lawful
standards and regulations promulgated and adopted by"the North Carolina Environmental
Management Commission, and the Federal Water _Pollu� tion•CControl Act, as amended,
ppf p
Hexion Specialty Chemicals, inc.
�is hereby authorized to
discharge storrnwater-from a facility located at
Yp� Y
Hexio Specialty pecialty Chemicals, Acme Facility
�333 Niels Eddy Road
Riegelwood, NC
Columbus County
to receiving waters designated as Livingston Creek (Broadwater Lake) and Mill -Creek, both
class C, Sw stream in the Cape Fear River Basin, in accordance with the discharge limitations,
monitoring requirements, and other conditions set forth in Parts I, 11, I1I, IV, V and VI hereof.
Note: Draft Permit Dates are Approximate
This permit shall become effective November 1, 2010.
This permit and the authorization to discharge shall expire at midnight on October 31, 2015.
Signed this day October 15, 2010.
for Coleen H. Sullins Director
Division of Water Quality
By the Authority of the Environmental Management Commission

� e
Permit No. NCS001'56
TABLE OF CONTENTS
PART I INTRODUCTION
Section A: Individual Permit Coverage
Section B: Permuted Activities
Section C: Location Map
PART Il MONITORING, -CONTROLS, AND LIMITATIONS FOR PERMITTED
' DISCHARGES
Section A: Stormwater Pollution Prevention Plan
Section B: Analytical Monitoring Requirements
Section C: Qualitative Monitoring Requirements �_
tioction D: On -Site Vehicle,Maintenance.Monitoring Requirements
PART III STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL
PERMITS._%
Section A: Compliance and Liability
I . Compliance Schedule
2. Duty to Comply
3. Duty to Mitigate
4. Civil and Criminal Liability
5. Oil and Hazardous Substance Liability
6. Property Rights _
7. Severability
8. Duty to Provide Information
9. Penalties for Tampering
10. Penalties for Falsification of Reports
Section B: General Conditions
1. Individual Permit Expiration
2. Transfers
3. Signatory Requirements
i

Permit No. NCS000156
4. Individual Permit Modification, Revocation and Reissuance, or
Termination
5. Permit Actions
Section C: Operation and Maintenance of Pollution Controls
1. Proper Operation and Maintenance
2. Need to Halt or Reduce Not a Defense -�-
3. Bypassing of Stormwater Control Facilities
Section D: Monitoring and Records;,-
1. Representative Sampling
2. Recording Results.
3. Flow. Measurements
4. Test Procedures
5. Representative Outfall
6. Records Retention,
f `r
7. Inspection and, nt ,
Section E: Reporting Requirements
1. Discharge Monitoring Reports
2. Submitting:Reports-
3. Availability of Reports
4. Non-Stormwater Discharges"
5. Planned Changes
6. Anticipated Noncompliance
7. Spills
8. Bypass
9. Twenty-four Hour Reporting
10. Other Noncompliance
11. Other Information
PART IV LIMITATIONS REOPENER
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI DEFINITIONS
M

Permit No. NCS000156
PART I INTRODUCTION
SECTION A: INDIVIDUAL PERMIT COVERAGE
During the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge stormwater associated with industrial activity. Such
discharges shall be controlled, limited and-raonitored as specified in this permit.
If industrial materials and activities are not zxposed to precipitation or runoff as described in 40
CFR § 122.26(g), the faeility�may qualify for a: i-10 Exposure Exclusion from NPDES stormwater
discharge permit requirements. Any owner or dperator wishing,to obtain a No Exposure
Certification must submit a No Exposure -(?ertification'NOI form to the -Division; must receive
approval by the Division; must maintain no exposure conditions unless authorized to discharge
under a valid NPDES stormwater permit; and must reapply for tle'No Exposure Exclusion once
every five (5) years. 1/\, \
SECTION B: PERMITTED ACTIVITIES
Until this permit expires or is modified o .revolted; the.permittee is authorized to discharge
stormwater to the surface waters of North. Carolina or separate storm sewer system that has been
adequately treated and managed.in accordance with the terms and conditions of this individual
permit. All stormwater discharges shall Win accordance with the conditions of this permit.
Any other point source,di.scharge.to surface-�=r?cers of the state is prohibited unless it is an
allowable non-stormwater discharge or is covered by another permit, authorization, or approval.
The stormwater discharges allowed by this individual permit shall not cause or contribute to
violations of Water Quality Standards.
This permit does not relieve the permittee from responsibility for compliance with any other
applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or decree.
Part 1 Page 1 of 2

SECTION C: LOCATION MAP
Permit No. NCS004156
, �{ A � Sr �s t !!, � �� i J,- ! � � _y l --s i , � { �!i •✓�-. t �-• 1 � _ c 1 t
f(',I
t` `f F'� {u J ! h•`t its_Ik—
: h� •y \ '�'
- 1
jV
77
.Ira •� • 1 �. .!�' 1 - _ + i_•• •f�.- _ i 'r , -L. .>, �s L
,�.1�_ '� • x �'_ .., .�.. •� , i ,ice �.'�=, ' ' �--•` y � `._ _
', r Hex Specialty Chemicals, Inc.
�, �,ir,�;y^:�c—~RE.:— �.��`� y tom• �} >:.t
`•�V-i'r`'.a�l - ~'_:`.;' M1�Jf{iJf}�.,,-�1 `�.i lrJf .
.�� •`- "i'j�_ -�' t .jJ F.a Q:�y��� 1 ���'S�`�'\. \,. fi .�;fi'+ f f {�"ji',/.. -''�
r��..y . , -,;_ -+F r, f'_. f�a.t�,'F 1•• �''.'.tiJ,� .1 �- ��� '� i �'F.7; l,.J ''' �_!{i•.
{K :i.{ .: - •. `'�'i''�CoIZI
7 _ •b -W+ {{ j�j 4 __ iR . ,1. • w -• - �T f r !`, 1 Ni � '.
_ �! r ;. tis, ;r ,, Tl'�f• I �r.��`ti7 _-,e`er �'i��: "'i'+c.r-. r �1(J ���` 1 :t.� 4y] �.
(I r'� eti �)f , _ t lam/ i 1 : •7 1:
•t !. ski 1ti��` e}',�,�� } Fr}•'''if
•���a St 'j���tl>Ci�ai � l`;J` �Y1 !r ix�� *, ' 1�.,f �. M�� �v .t � �+i-!'
- ^. •Ill; x`i�`-q,�tis {� l - rS �._ ...---��F} � •e• { '� • :_F �, �< � _
`� 4�7 •• � � 'w �'.- rY,,.�f j7�s�,.' ; L"7.L `.c;`. '''`, '" `'�� +
i �t�Y �' w � ��� .� � �'/!•� �' � t'W Y'� A ~ -� �� � _ wily; ` ` r �
���.•(�7 ` 1 r:��.1• .Sf.. - �r� L`` ti. .rr ;'� aY r •' yl
^s }}}�.���r' t r°, w�'�.. �j�t{ 4�r i�} �� �?,.♦ r r� i Ji ii 1''�' 1.• �' �: r y
�.f (•. •--•.�i. r=� 'J j{ IfF.i >-",s't. y, ..[F-�'. f<.sa �v* y 5.� ,.t":
'tJ� � .'/ 'J +� r ` .li �.'7r/.Tr" ���Y � - r...� � i i i + e. , .v 4 `�. _ .•4 ' -%+F y. r ;'
NCS000156
w jpit�_, F
S
Map Scale 1:13, 6(13
Hexion Specialty Chemicals, Inc.
Riegelwood, NC
Latitude: 341119' 40" N
Longitude: 780 12' 10" W
County: Columbus County
Receiving Stream: Livingston Creek (Broadwater Lake)
and Mill Creek
Stream Class: Both C, Sw
Sub -basin: 03-06-07 (Cape Fear River Basin)
Facility Location
Part I Page 2 of 2

Permit No. NCS000156
PART II . MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
SECTION A: STORMWATER POLLUTION PREVENTION PLAN
The Permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to as
the Plan. This Plan shall be considered public nfo..1fiation in accordance with Part III, Standard
Conditions, Section E, Paragraph 3 of this individuai.permit. The Plan shall include, at a
minimum, the following items:
1. Site Plan. The site plan shall provide a descriptionof the physical facility and the
potential pollutant sources which may be ext:¢cted't contribute to contamination of
stormwater discharges. The site plan shall contain the.following:
(a) A general location map (USGS quadrangle -map or appropriately drafted
equivalent map), showing the facility's;location in relation to transportation routes
and surface waters, the name of the rec6ving.water(s) to which the stormwater
outfall(s) discharges, or if the discharge is to a municipal separate storm sewer
system, the name of the municipality an#d the ultimate receiving waters, and
accurate latitude and longitude of th�'point(s) ofdischarge. The general location
map (or alternatively•the site map)shall identify whether each receiving water is
impaired (on the state's-303(d)'list of impaired waters) or is located in a
watershed for which a TMDL has been established, and what the parameter(s)
of concern are.f�
(b) A narrative description of storage pract,;;es, loading and unloading activities,
outdoor process er as, dust or particulate generating or control processes, and
waste disposal practices. A narrative description of the potential pollutants which
could be expected to be present in the stormwater discharge from each outfall.
(c) A site map drawn to scale (including a distance legend) showing: the site property
boundary, the stormwater discharge outfalls, all on -site and adjacent surface
waters and wetlands, industrial activity areas (including storage of materials,
disposal areas, process areas, loading and unloading areas, and haul roads), site
topography, all drainage features and structures, drainage areas for each outfall,
direction of flow in each drainage area, industrial activities occurring in each
drainage area, buildings, existing BMPs, and impervious surfaces. The site map
must indicate the percentage of each drainage area that is impervious.
(d) . A list of significant spills or leaks of pollutants that have occurred at the facility
during the three (3) previous years and any corrective actions taken to mitigate
spill impacts.
(e) Certification that the stormwater outfalls have been evaluated for the presence of
non-stormwater discharges. The certification statement will be signed in
accordance with the requirements found in Part III, Standard Conditions, Section
Part 11 Page 1 of 10

Permit No. NCSo001 56
B, Paragraph 5. The permittee shall re -certify annually that the stormwater
outfalls have been evaluated for the presence of non-stormwater discharges.
2. Stormwater Management Plan. The stormwater management plan shall contain a
narrative description of the materials management practices employed which control or
minimize the exposure of significant materials to stormwater, including stru_ ctural and
nonstructural measures. The stormwater management plan, at a minimum, shall
incorporate the following:
(a) Feasibility Study. A re'. iew of the technical and economic feasibility of changing
the methods of operations and/or storage practices to eliminate or reduce exposure
of materials and processes- o stormwater. Wherever practical; the permittee shall _
prevent exposure of all,stofage areas, material handling operations, and
manufacturing or fueling operations. In areas where elimination of exposure is
not practical, the stormwater management plan shall document the feasibility of
diverting the stormwater runoff away from.areas of potential contamination.
(b) Secondary Containment Requirements and Records. Secondary containment is
required for: bulk storage of liquid materials; storage in any amount of Section
313 of Title III of the Superfund Amendments and Reauthorization Act (SARA)
water priority chemicals• and storage in any amount of hazardous substances, in
order to prevent leaks and_ `spills from'contaminating stormwater runoff. A table
or summary of all,,lsueh,t nks and stored materials and their associated secondary
containment areas -shall be,niaintained. If the secondary containment devices are
connected to stormwater conveyance systems, the connection shall be controlled
by manually activated�v�h{es or other similar. devices (which shall be secured
- closed with a; lockingmechanism), and any stormwater that accumulates in the
containment area -shall be at a minimum visually observed for color, foam, outfall
staining; visible sheens and dry weather flow, prior to release of the accumulated
stormwater. Accumulated stormwater shall be released if found to be
uncontaminated by any material. Records documenting the individual making the
observation, the description of the accumulated stormwater, and the date and time
of the release shall be kept for a period of five years.
(c) BMP Summary. A listing of site structural and non-structural Best Management
Practices (BMP) shall be provided. The installation and implementation of BMPs
shall be based on the assessment of the potential for sources to contribute
significant quantities of pollutants to stormwater discharges and data collected
through monitoring of stormwater discharges. The BMP Summary shall include a
written record of the specific rationale for installation and implementation of the
selected site BMPs. The BMP Summary shall be reviewed and updated annually.
3. Spill Prevention and Response Plan. The Spill Prevention and Response Plan (SPRP)
shall incorporate an assessment of potential pollutant sources based on a materials
inventory of the facility. Facility personnel (or the team) responsible for implementing the
SPRP shall be identified in a written list incorporated into the SPRP and signed and dated
by each individual acknowledging their responsibilities for the plan. A responsible
person shall be on -site at all times during facility operations that have the potential to
Part II Page 2 of ] 0

Permit No. NCS000156
contaminate stormwater runoff through spills or exposure of materials associated with the
facility operations. The SPRP must be site stormwater specific. Therefore, an oil Spill
Prevention Control and Countermeasure plan (SPCC) may be a component of the SPRP,
but may not be sufficient to completely address the stormwater aspects of the SPRP. The
common elements of the SPCC with the SPRP may be incorporated by reference into the
SPRP.
4, Preventative Maintenance and Good Housekeeping Prpgram. A preventative
maintenance and good housekeeping program shall be, developed. The program shall list
all stormwater control systems, stormwater discharge outfalls, all on -site and adjacent
surface waters and wetlands, industrial activity areas (including material storage areas,
material handling areas, disposal areas, process areas, loadi.rig'and unloading areas, and
haul roads), all drainage features and structures, and existing structural BMPs. The
program shall establish schedules of inspections, -maintenance, housekeeping
activities of stormwater control systems, as well as -facility equipment, facility. areas, and
facility systems that present a potential for stormwater exposure or stormwater pollution.
Inspection of material handling areas and regula`r.cleaning schedules of these areas shall
be incorporated into the program. Timely compliance with the established schedules for
inspections, maintenance, and housekeeping shall -be recorded in writing and maintained
in the SPPP.
5. Employee Training. Trainin ro am4hall be developed and trainiri provided at a
g gP ,� P gP
minimum on an annual basis for facility, personnel with responsibilities for: spill response
and cleanup, preventative,maintenance activities, and for any of the facility's operations
that have the potential" contaminate stormwater runoff. Facility personnel (or team)
responsible for implementing the training shall be identifcy, and their annual training
shall be documented by the signature of each employee trained.
6. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a specific
position(s) responsible for the overall coordination, development, implementation, and
revision to the Plan. Responsibilities for all components of the Plan shall be documented
and position assignments provided.
7. Plan Amendment. The permittee shall amend the Plan.whenever there is a change in
design, construction, operation, or maintenance which has a significant effect on the
potential for the discharge of pollutants to surface waters. All aspects of the
Stormwater Pollution Prevention Plan shall be reviewed and updated on an annual
basis. The annual update shall include an updated list of significant spills or leaks of
pollutants for the previous three years, or the notation that no spills have occurred. The
annual update shall include written re -certification that the stormwater outfalls have been
evaluated for the presence of non-stormwater discharges. Each annual update shall
include a documented re-evaluation of the effectiveness of the BMPs listed in the BMP
Summary of the Stormwater Management Plan.
The Director may notify the permittee when the Plan does not meet one or more of the
minimum requirements of the permit. Within 30 days of such notice, the permittee shall
submit a time schedule to the Director for modifying the Plan to meet minimum
requirements. The permittee shall provide certification in writing (in accordance with
Part 11 Page 3 of 10

Permit No. NCSOOO t 56
Part III, Standard Conditions, Section B, Paragraph 5) to the Director that the changes
have been made.
8. Facility Inspections. Inspections of the facility and all stormwater systems shall occur as
part of the Preventative Maintenance and Good Housekeeping Program at a minimum on
a semi-annual schedule, once during the first half of the year (January to June), and once
during the second half (July to December), with at least 60 days separating inspection
dates (unless performed more frequently :han semi-annually). These facility inspections
are different from and in addition to, th stormwater discharge characteristic monitoring
required in Part-fl B an&C of this permi6.
9. Implementation. The permittee shall impler,iit the Plan. Implementation of the Plan
shall include documentation of all monitoring, measurements, inspections, maintenance
activities, and training provided to employees,. including the log,of the sampling data and
of actions taken to implement BMPs associated withthe,industrial activities, including
vehicle maintenance activities. Such documentation shall 'be kept on -site for a period of
five years and made available to the Director or the Director's authorized representative
immediately upon'request.
- _= 71 l
SECTION B: ANALYTICAL MONITORIN�GEQUIREMENTS
discharges shall be performed as specified in Table 1. All Analytical monitoring of stormwater
analytical monitoring shall be performedduring a representative storm event. The required
monitoring will result in a minimum -of twenty analytical samplings being conducted over the
term of the permit at each stormwater discharge outfall (SDO).
r!
A representative storm, event is a..storm event that measures greater than 0.1 inches of rainfall. The time
between this storm event Arid the.previous storm event measuring greater than 0.1 inches must be at least
72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if
it rains but stops before producing any collectable discharge, a sample may be collected if the next rain
producing a discharge begins within 10 hours.
PartH Page 4 of 10

Permit No. NCS000156
Table 1. Analytical Monitoring Requirements
Discharge
Measurement
Sample I
Sample
Characteristics
Units
Fre uenc I
Type2
Location3
Biochemical Oxygen Demand
mg/l
Quarterly
Q Y
Grab
SDO
(BOD)
Chemical Oxygen Demand
mg/l
Quarterly
`Grab
SDO
(COD)
Total Suspended Solids (TSS)
mg/l
Quarterly
- 'drab
SDO
Total Kjeldahl Nitro en TKN)
mg/l
Quarterly
Grab-
SDO
Nitrate + Nitrite-N (NO2+NO3-
, mg/l
Quarterl-'
-+<,3rab
SDO
N)
Ammonia as Nitrogen (NH3-N)
mg/l
uarterl
Q„ Y,
Grab
SDO
Total Phosphorus (TP)
mg/1
UQuarterly
Grab
003, 004,
006,009
Hexamine
mg/l
r �f'�Quarterly
Grab
SDO
Formaldehyde
mg/l,/,
Quarterly
Grab
SDO
Methanol `r
mg/1 F\
Quarterly
Grab
003, 004,
006,009
003, 004,
Total Residual Chlorine (TRC)
mg/l
Quarterly
Grab
006,009
Lead, Total
jfmg/1
Quarterly
C;,-ab
SDO
Total Copper
mg/1
Quarterly
Grab
SDO
Total Zinc
mg/l
Quarterly
Grab
SDO
Acute Toxicity,
Annually,
Grab
003, 004,
006; 009
Method 1664 SGT-HEM
mg/1
Quarterly
Grab
SDO
(Non- Polar O&G)
H
standard
I Quarterly
Grab
SDO
Total Rainfa116
inches
I Quarterly
Rain Gauge
I -
Footnotes:
I Measurement Frequency: Four times per year during a representative storm event.
2 Grab samples shall be collected within the first 30 minutes of discharge.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) or the outfall specified above.
4 The permittee may discontinue monitoring this parameter for the remainder of the permit after first eight (8) sampling
events, if all results are below the benchmark value.
5 Acute toxicity shall be performed in accordance with Appendix A: Special Conditions at the end of this permit.
6 For each sampled representative storm event the total precipitation must be recorded. An on -site rain gauge or local rain
gauge reading must be recorded.
Part II Page 5 of 10

Permit No. NCS000156
The permittee shall complete the minimum twenty analytical samplings in accordance with the
schedule specified below in Table 2. A minimum of 30 days must separate Period 1 and
Period 2 sample dates unless monthly monitoring has been instituted under a Tier Two
response.
Table 2. Monitoring Schedule
Monitoring periodt'Z
Start
,Ertl
All Years — Quarter 1
January 1
March 31
All Years — Quarter 2
April 1
June 3--
All Years — Quartet; 3
July 1
Septemb-Pr 30 f'
All Years — Quarter 4
October 1
December 3 I \
Footnotes: / � //f \
1 Maintain Quarterly monitoring during permit renewal process. if at the expiration of the Individual Permit,
the permittee has submitted an application for renewal ofcoverage before the submittal deadline, the
permittee will be considered for renewed coverage. Quarterly monitoring shall be done all years of the
permit and the applicant must continue quarterly monitoring until the renewed Certificate of Coverage is
issued.
2 If no discharge occurs during the sampling period;�the permittee must submit a monitoring report indicating
"No Flow" within 30 days of the end of the three-month sampling period.,
The permittee shall report the analytical results from the first sample with valid results within the
monitoring period. The permittee shall compare monitoring results to the benchmark values in
IV
Table 3. The benchmark values in Table 3 are not permit iiro.its but should be used as guidelines for
the permittee's Stormwater Poll ution`Prevention Plan (SPPP). Exceedences of benchmark values
= require the permittee to increase -monitoring, increase management actions, increase record keeping,
and/or install stormwater Best Management Practices (BMPs) in a tiered program. See below the
descriptions of Tier One and Tier Two.
Part II Page 6 of 10

Permit No. NCS000156
Table 3. Benchmark Values for Analvtical Monitoring
Discharge Characteristics
Benchmark
Units
Biochemical Oxygen Demand
20
mg/l
(BOD)
Chemical Oxygen Demand
120
(COD)
_
mg/l
Total Suspended Solids (TSS)
100
mg/l
Total Kjeldahl Nitrogen (TKN)
20
mg/l
Ammonia as Nitrogen (NH3-N)
- 7.2
mg/1///11
Nitrate + Nitrite (NO2+NO3-N)
10
(( jm \
Total Phosphorus (TP)
2g/l
Hexamine
25,000
r�
m 1
., �
Formaldehyde
0.5,-
>-rng/l
-Lead, Total �
�.� /:03
f mg/l
Methanol
7,700 >
mg/1
Method 1664 SGT-HEM (Non- (f
� 15
mg/l
Polar O&G} _
Total Copper
0.007
mg/l
Total Zinc
0.067
mg/l
Total Residual Chlorine (TRC)
.028
mg/1
Acute Toxicity
See Appendix
See Appendix
A: Special
A: Special
Conditions
Conditions
pH
6-9
standard
Part II Page 7 of 10

Permit No. NCS000156
Tier One
If: The first valid sampling results are above a benchmark value, or outside of the benchmark range, for any
parameter at any outfall;
Then: The permittee shall:
I . Conduct a stormwater management inspection of the facility within two weeks of receiving
sampling results. u ,�
2. Identify and evaluate possible causes of the benchmark value exceedence. .
A
3. Identify potential and select the specific: source controls, operational Zontrols, or physical
improvements to reduce concentrations of the parameters of concern, or ttbring concentrations
within the benchmark range.
4. Implement the selected actions within two month f-th�inspection.
5. Record each instance of a Tier One response in the Stormwater Pollution Prevention Plan. Include
the date and value of the benchmark exceedence, the inspection date, the personnel conducting the
inspection, the selected actions, and the date the selected actions were implemented.
Tier Two
If: During the term of this permit, the first valid -sampling results from three consecutive monitoring periods
are above the benchmark values, of outside of the benchmark range, for any specific parameter at a'
specific dischar e outfall;
Then: The permittee shall:
1. Repeat all the required actin" ns outlinabove in Tier One.
P �
2. Immediately institute monthly monitoring for all parameters at every o M11 where a sampling result
exceeded the benchmark vvalue,for two consecutive samples... Monthly analytical and qualitative)
monitoring shall continue until three consecutive sample results are below the benchmark values or
within the benchmark range.
3. If no discharge occurs during the sampling period, the permittee is required to submit a monthly
monitoring report indicating "No Flow' to comply with reporting requirements.
4. Maintain a record of the Tier Two response in the Stormwater Pollution Prevention Plan.
Tier Three
During the term of this permit, if the valid sampling results required for the permit monitoring periods exceed
the benchmark value, or are outside the benchmark range, for any specific parameter at any specific outfall on
four occasions, the permittee shall notify the DWQ Regional Office Supervisor in writing within 30 days of
receipt of the fourth analytical results. DWQ may but is not limited to:
• require that the permittee revise, increase, or decrease the monitoring frequency for the remainder
of the permit;
• require the permittee to install structural stormwater controls;
• require the permittee to implement other stormwater control measures; or
• require that the permittee implement site modifications to qualify for the No Exposure Exclusion.
• require the permittee to conduct acute toxicity testing on discharges per Appendix A: Special
Part II Page 8 of 10

Permit No. NCS000156
This site discharges to impaired waters experiencing problems with Turbidity. If a Total
Maximum Daily Load (TMDL) is approved for this segment of Livingston Creek (Broadwater
Lake) the permittee may be required to monitor for the pollutant(s) of concern in the future and
submit results to the Division of Water Quality. The Division will consider the monitoring
results in determining whether additional BMPs are needed to control the pollutant(s) of concern
to the maximum extent practicable.
If additional BMPs are needed to achieve the required level of control, the permittee will be
required to (1) develop a strategy t6r implementing appropriate BMPs, and (2) submit a timetable
for incorporation of those BMPs intc the permitted Stormwater Pollution Prevention Plan.
SECTION C: QUALITATIVE 1140NITORING REQUIREMENTS
Qualitative monitoring requires a visual inspection of each'st rmwater outfall regardless of
representative outfall status and shall be performed as.sp cified in -Table 4, during the analytical
monitoring event. Qualitative monitoring is for the purpose of evaluating the effectiveness of the
Stormwater Pollution Prevention Plan (SPPP) and�a ss essing new sources of stormwater pollution.
In the event an atypical condition is noted at-a,'storrnwdfer discharge outfall, the permittee shall
document the suspected cause of the condition_and.any actions taken in response to the
-discovery. This documentation�wtll be maintained with the SPPP.
Table 4. Qualitative Monitoring Requirements
Discharge Characteristics Frequencyt
_
Monitoring
Location2
Color ``r,
semi-annual
SDO
Odor
semi-annual
SDO
Clarity
semi-annual
SDO
Floating Solids
semi-annual
SDO
Sus ended Solids
semi-annual
SDO
Foam
semi-annual
SDO
Oil Sheen
semi-annual
SDO
Erosion or deposition at the outfall
semi-annual
SDO
Other obvious indicators
of stormwater pollution
semi-annual
SDO
Footnotes:
1 Measurement Frequency: Twice per year during a representative storm event, for each year until either another
permit is issued for this facility or until this permit is revoked or rescinded. If at the end of this permitting cycle
the permittee has submitted the appropriate paperwork for a renewal permit before the submittal deadline, the
permittee will be considered for a renewal application. The applicant must continue semi-annual monitoring until
the renewed permit is issued- See Table 2 for schedule of monitoring periods through the end of this permitting
-cycle.
2 Monitoring Location: Qualitative monitoring shall be performed at each stormwater discharge outfall (SDO)
regardless of representative outfall status.
Part II Page 9 of 10

Permit No. NCS000156
SECTION D: ON -SITE VEHICLE MAINTENANCE MONITORING REQUIREMENTS
Facilities which have'any vehicle maintenance activity occurring on -site which uses more than 55
gallons of new motor oil per month when averaged over the calendar year shall perform
analytical monitoring as specified below in Table 5. This monitoring shall be performed at all
stormwater discharge outfalls which discharge stormwater runoff from vehicle maintenance
areas, and in accordance with the schedule presented in Table 2 (Section B). Al), .analytical
monitoring shall be performed during a representative stormievent.J.
Table 5. Analvtical Monitoring Requirements for On -Site Vehicle Maintenance
Discharge Characteristics
Units _
Measurement
Sample
temple
Fre uenc 1
Type2
- Location3
H
standard
semi-annual \
. /Grab
SDO
Method 1664 SGT-HEM
��< \,
_Z "
mg/l
semi-annual
Grab
SDO
(Lqon-Polar O&G)
</ \ \
Total Suspended Solids
mg/1
. Grab
SDO
Total Rainfa114
inches ���
/semi-annual
//emi-annual
Rain gauge
New Motor Oil Usage
I gallons/month ,
(-semi-annual
Estimate
-
Footnotes:
1 Measurement Frequency: Twice per year dunng.a representative storm event, for each year until either another
permit is issued for this facility or until "this p~~ermitis` revoked or rescinded. If at the end of this permitting cycle
the permittee has submitted the appropriate paperwork for a renewal permit before the submittal deadline, the
permittee will be considered for'Yi&enewal application. The applicant must continue semi-annual rn,:utoring until
the renewed permit is issued.-See'Table 2, for schedule of monitoring periods through the end of phis permitting
cycle. ``.✓ = .,
u 2 If the stormwater runoff is controlled by a stormwater detention pond a grab sample of the discharge from the
pond shall be collected within the first 30 minutes of discharge from -the pond.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) that discharges
stormwater runoff from area(s) where vehicle maintenance activities occur.
4 For each sampled representative storm event the total precipitation must be recorded. An on -site or local rain
gauge reading must be recorded. `
Monitoring results shall be compared.to the benchmark values in Table 6. The benchmark
values in Table 6 are not permit limits but should be used as guidelines for the permittee's
Stormwater Pollution Prevention Plan (SPPP). Exceedences of benchmark values require the
permittee to increase monitoring, increase management actions, increase record keeping, and/or
install stormwater Best Management Practices (BMPs), as provided in Part II Section B.
Table 6.
Benchmark Values for Vehicle Maintenance Analytical Monitoring
Discharge Characteristics
Units
Benchmark . .
pH
standard
6-9
Method 1664 SGT-HEM (Non -
Polar O&G)
m,/l
15
Total Suspended Solids
mg/1
100
Part II Page 10 of 10

Permit No. NCS000156
PART III STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL PERMITS
SECTION A: COMPLIANCE AND LIABILITY
Compliance Schedule
The perrnittee shall comply with Limitations and Controls specified for stormwater discharges in
accordance with the following schedule:
Existing Facilities already operating but applyinz=for permit coverage for the first time: The Stormwater
Pollution Prevention Plan shall be developed and'implemented within 12 months of the effective date of the
initial permit and updated thereafter on an annual basi§;.Secondary containment, as specified in Part II,
SectionA, Paragraph 2(b) of this permit, shall be accumplished.within,l2 months of the effective date of
the initial permit issuance.
New Facilities applying for coverage for the first time Zd'existmg facilities previously permitted and
applying for renewal under this permit: The Stormwater, Pollution Prevention Plan shall be -developed and
implemented prior to the beginning of discharges from.the operation of the industrial activity and be
updated thereafter on an annual basis. Secondary containment, as -specified in Part II, Section A, Paragraph
2(b).of this permit shall be accomplished prior to -the beginning of discharges from the operation of the
industrial activity.
Duty to Comply
The permittee must comply with all -conditions of, this individual permit. Any permit noncompliance
constitutes a violation of the Clean Water Act and is grounds for enforcement action; for permit
termination, revocation and reissuance; or modification; or denial of a permit upon renewal application.
a. The permittee shall comply�iviL standard,` c. prohibitions established under section 307(a) of the
_Clean Water Act for toxic pollutants within_ the time provided in the regulations that establish these
standards or protiibitior s, even if the pem- t has not yet been modified to incorporate the
requirement.
b. The Clean Water Act provides that any person who violates a permit condition is subject to a civil
penalty not to exceed $25,000 per day for each violation. Any person who negligently violates any
permit condition is subject to criminal penalties of $2,500 to 25,000 per day of violation, or
imprisonment for not more than 1 year, or both. Any person who knowingly violates permit
conditions is subject to criminal penalties of $5,000 to $50,000 per day of violation, or
imprisonment for not more than 3 years, or both. Also, any person who violates a permit condition
may be assessed an administrative penalty not to exceed $10,000 per violation with the maximum
amount not to exceed $125,000. [Ref Section 309 of the Federal Act 33 USC 1319 and 40 CFR
122.41(a).]
c. Under state law, a daily civil penalty of not more than ten thousand dollars ($I0,000) per violation
may be assessed against any person who violates or fails to act in accordance with the terms,
conditions, or requirements of a permit. [Ref NC General Statutes 143-215.6A].
d. Any person may be assessed an administrative penalty by the Director for violating section 301,
302, 306, 307, 308, 318 or 465 of the Act, or any permit condition or limitation implementing any
of such sections in a permit issued under section 402 of the Act. Administrative penalties for Class
I violations are not to exceed $10,000 per violation, with the maximum amount of any Class I
penalty assessed not to exceed $25,000. Penalties for Class II violations are not to exceed
Part III Page 1 of 8

. Permit No. NCS000156
$10,000 per day for each day during which the violation continues, with the maximum amount of
any Class II penalty not to exceed $125,000..
3. Duty to Mitigate
The permittee shall take all reasonable steps to minimize or prevent any discharge in violation of this
individual permit which has a reasonable likelihood of adversely affecting human health or the environment.
4. Civil and Criminal Liabilir�_
Except as provided in Part-11T, Section C of this permit regarding bypassing of stormwater control facilities,
nothing in this individual permit shall be construed to relieve the permittee from any responsibilities,
liabilities, or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6A, 143-215.613, 143-
215.6C or Section 309 of the Federal Act; 33 USC 1319. Furthermore, the permittee is responsible for
consequential damages, sucir as fish kills, even though the resp,Asibili y for effective compliance may be
temporarily suspended. /�' �- 1\ A
5. Oil and Hazardous Substance Liability
Nothing in this individual permit shall be construed to preclude the institution of any legal action or relieve
the permittee from any responsibilities, liabilitiesj'or penalties to which the permittee is or may be subject to
under NCGS 143-215.75 et seq. or Section 311�of the.Federal,Act, 33 USC 1321.
r
6. Property Rights
The issuance of this individual'permit does not convey any property rights in either real or personal
property, or any exclusive privileges, nor does•it authorize any injury to private property or any invasion of
personal rights, nor any infringement'of Federal, State or local laws or regulations.
7. Severability -
The provisions of this individual permit are severable, and if any provision of this individual permit, or the
application of any provision of this individual permit to any circumstances, is held invalid, the application
of such provision to other circumstances, and the remainder of this individual permit, shall not be affected
thereby_
8. Duty to Provide Information
The permittee shall furnish to the Director, within a reasonable time, any information which the Director
may request to determine whether cause exists for modifying, revoking and reissuing, or terminating the
permit issued pursuant to this individual permit or to determine compliance with this individual permit. The
permittee shall also furnish to the Director upon request, copies of records required to be kept by this
individual permit.
Penalties for Tampering.
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate,
any monitoring device or method required to be maintained under this individual permit shall, upon
conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more
than two years per violation, or by both. If a conviction of a person is for a violation committed after a first
conviction of such person under this paragraph, punishment is a fine of not more that $20,000 per day of
violation, or by imprisonment of not more than 4 years, or both.
Part III Page 2 of 8

Permit No. NCS000156
10. Penalties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false statement, representation, or
certification in any record or other document submitted or required to be maintained under this individual
permit, including monitoring reports or reports of compliance or noncompliance shall, upon conviction, be
punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years
per violation, or by both.
SECTION B: GENERAL CONDITIONS
Individual Permit Expiration
The permittee is not authorized to discharge after the expiration -date nit order to receive automatic
authorization to discharge beyond the expiration date, -the permittetr shall submit forms and fees as are
required by the agency authorized to issue permits no laterthan-i80-days prior to the expiration date. Any
permittee that has not requested renewal at least 180 days prior to expiration, or any permittee that does not
have a permit after the expiration and has not requested renewal at least-180 days prior to expiration, will be
subjected to enforcement procedures as provided in NvGS § 143-2153.6 and 33 USG 1251 et. seq.
Transfers
This permit is not transferable to any person except "after 'notice to and approval by the Director. The
Director may require modification or rev ocation=and reissuance of the permit to_change the name and
incorporate such other requirements as�may �be necessary under the Clean Water Act. The Permittee is
required to'notify the Divis on in writing in the event the permitted facility is sold or closed.
Signatory Requirements
All applications, reports, or information submitted to the Director 01'ff be signed and certified.
a. All applications to be covered under this individual permit shall be signed as follows:
(1) In the case of a corporation: by a principal executive officer of at least the level of vice-
-president, or his duly authorized representative, if such representative is responsible for
the overall operation of the facility from which the discharge described in the permit
application form originates;
(2) In the case of a partnership or limited partnership: by a general partner;
(3) In the case of a sole proprietorship: by the proprietor;
(4) In the case of a municipal, state, or other public entity: by a principal executive officer,
ranking elected official, or other duly authorized employee.
b. All reports required by the individual permit and other information requested by the Director shall
be signed by a person described above or by a duly authorized representative of that person. A
person is a duly authorized representative only if
(1) The authorization is made in writing by a person described above;
(2) --The authorization specified either an individual or a position having responsibility for the
overall operation of the regulated facility or activity, such as the position of plant
manager, operator of a well or well field, superintendent, a position of equivalent
Part III Page 3 of 8

Permit No. NCS000156
I
5.
SECTION C
responsibility, or an individual or position having overall responsibility for environmental
matters for the company. (A duly authorized representative may thus be either a named
individual or any individual occupying a named position.); and
(3) - The written authorization is submitted to the Director.
Any person signing a document under paragraphs a. or b. of this section shall make the following
certification:
"1 certify, under penalty of law;'i.hat this document and all attachments were prepared under my
direction or gupeivision in accordina.,ce 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 thr,5e.persons directly responsible for gathering the
information, the information submitted:s, to the best of my knowledge and belief, true, accurate,
and complete.' I am aware that.thwe are significant penalties for submitting false information,
including the possibility of fines and imprisonment for,knowing violations."
The issuance of this individual permit does not prohibi�the Director from reopening and modifying the
individual permit, revoking and reissuing the individual permit; or terminating the individual permit as
allowed by the laws, rules, and regulations contained'in Title 40, Code of Federal Regulations, Parts 122
and 123; Title 15A of the North Carolina AdministrativeCode, Subchapter 2H .0100; and North Carolina
General Statute 143-215.1 -et al.
Permit Actions
The permit may be modified,:f6voked and'reissued, or terminated for cause. The notification of planned
changes or anticipated noneomplian e does not stay any individual permit condition.
'R. r
OPERATION AND\J
Proper Operation and Maintenance
ENAN+C.E OF POLLUTION CONTROLS
The permittee shall -at all times properly operate and maintain all facilities and systems of treatment and
control (and related appurtenances) which are installed or used by the permittee to achieve compliance with
the conditions of this individual permit. Proper operation and maintenance also includes adequate
laboratory controls and appropriate quality assurance procedures. This provision requires the operation of
back-up or auxiliary facilities or similar systems which are installed by a permittee only when the operation
is necessary to achieve compliance with the conditions of this individual permit.
Need to Halt or Reduce Not a Defense
It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this individual permit.
Bussing of Stormwater Control Facilities
Bypass is prohibited and the Director may take enforcement action against a permittee for bypass unless:
a. Bypass was unavoidable to prevent loss of life, personal injury or severe property damage; and
Part III Page 4 of 8

Permit No. NCSOOb156
b. There were no feasible alternatives to the bypass, such as the use of auxiliary control facilities,
retention of stormwater or maintenance during normal periods of equipment downtime or dry
weather. This condition is not satisfied if adequate backup controls should have been installed in
the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal
periods of equipment downtime or preventive maintenance; and
C. The permittee submitted notices as required under, Part III, Section E of this permit.
If the Director determines that it will meet the three conditions listed above, the,7irector may approve an
anticipated bypass after considering its adverse effects.
SECTION D: MONITORING AND RECORDS
Representative Sampling -
Samples collected and measurements taken, as required hereiA, s fall be-chajacteristic of the volume and
nature of the permitted discharge. Analytical sampling�shatl'be performed during a representative storm
event. Samples shall be taken on a day and time that is characteristic of the discharge. All samples shall be
taken before the discharge joins or is diluted by any,other waste stream, body of water, or substance.
Monitoring points as specified in this permit shall be changed without notification to and approval of
the Director.
2. Recording Results �(��t
For each measurement, sampl ection or maintenance activity performed or collected pursuant to the
requirements of this individual
�permi�t, the
permittee shall record the following information;
a. The date, exact place" , and time of sampling, measurements, inspection or maintenance activity;
b. The individual(s) who pe"rf/ormed the sampling, measurements, inspection or maintenance activity;
C. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
Flow Measurements
Where required, appropriate flow measurement devices and methods consistent with accepted scientific
practices shall be selected and used to ensure the accuracy and reliability of measurements of the volume of
monitored discharges.
4. Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations published pursuant to
NCGS 143-215.63 et. seq, the Water and Air Quality Reporting Acts, and to regulations published pursuant
to Section 304(g), 33 USC 1314, of the Federal Water Pollution Control Act, as Amended, and Regulation
40 CFR 136,
Part III Page 5 of 8

Permit No. NCS000156
To meet the intent of the monitoring required by this individual permit, all test procedures must produce
minimum detection and reporting levels and all data generated must be reported down to the minimum
detection or lower reporting level of the procedure.
5. Representative Outfall
If a facility has multiple discharge locations with substantially identical stormwater discharges that are
required to be sampled, the permittee may petition the Director for representative outfall status. If it is
established that the stormwater discharges are substantially 3entical and the permittee is granted
representative outfall status, then sampling requirements rcay be performed at a reduced number of outfalls.
6. Records Retention
a
Visual monitoring shall be documented and records maintained of the facility along with the Stormwater
Pollution Prevention Plan. Copies of analytical monitoring msults,shall also be maintained on -site. The
permittee shall retain records of all monitoring information? including all calibration and maintenance
records and all original strip chart recordings for continuous monitoring instrumentation, and copies of all
reports required by this individual permit for a period of at least 5 years -from the date of the sample,
measurement, report or application. This period may be extended by request of the Director at any time.
v
7. Inspection and Entry l�
The permittee shall allow the Director, or an authorized representative (including an authorized contractor
acting as a representative of the Director)` or in rthe.case of a facility which discharges through a municipal
separate storm sewer system, an authorized representative of a municipal operator or the separate storm
sewer system receiving the discharge, upon the,presentation of credentials and other documents as may be
required by law, to; %' >
a. Enter upon the permitteepremises where a regulated facility or activity is located or conducted,
or where records must be kept under the conditions of this individual permit;
b. Have access to and -copy, at reasonable times, any -records that must be kept under the conditions of
this individual permit;
C. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment),
practices, or operations regulated or required under this individual permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring individual permit compliance
or as otherwise authorized by the Clean Water Act, any substances or parameters at any location.
SECTION E: REPORTING REQUIREMENTS
Discharge Monitoring Reports
Samples analyzed in accordance with the terms of this permit shall be submitted to the Division on
Discharge Monitoring Report forms provided by the Director. Submittals shall be delivered to the Division
no later than 30 days from the date the facility receives the sampling results from the laboratory.
The permittee shall submit an Annual Summary Data Monitoring Report to the appropriate DWQ Regional
Office by March 1 of each year. This data shall summarize data from the previous calendar year. The
submittal shall be on forms supplied by the Division.
Part III Page 6 of 8

Permit No. NCS000156 .
When no discharge has occurred from the facility during the report period, the permittee is required to
submit a discharge monitoring report, within 30 days of the end of the three-month sampling period, giving
all required information and indicating "NO FLOW" as per NCAC T15A 02B .0506.
The permittee shall record the required qualitative monitoring observations on the SDO Qualitative
Monitoring Report form provided by the Division, and shall retain the completed forms on site, Visual
monitoring results should not be submitted to the Division, except upon DWQ's specific requirement to do
so,
2. Submitting Reportg ;
Two signed copies of Discharge Monitoring Reports (DMRs) shall be submitted to:
Central Files '
Division of Water Quality
1617 Mail.Service Celnter�
Raleigh, North Carolina�27699-1617 '�`✓
In addition, a separate signed Annual Summary DMR copy shall be submitted to the local DWQ Regional
Office (RO) by March I of each year. v
Addresses for each RO and the counties covered byeachRO can be found here:
h_ttp://www.enr.state.ne.us/html/regionaloffices.htmlr;•The permittee shall retain the completed originals
on site. Visual monitoring results should\not bersubmitied to the Regional Offices or Central Files unless
specifically requested by DWQ.\_
3. Availability of Reports
Except for data determined"to be confidential under NCGS 143-215.3(a)(2) or Section 308 of the Federal
Act, 33 USC 1318, all reports prepared in accordance with the terms shall be available for pi bli,Cllh pection
at the offices of the Division of Water Quality. As required by the Act, analytical data shall not be
considered confidential. Knowingly making any false statement on any such report may result in ine
imposition of criminal penalties as provided for in NCGS 143-215.613 or in Section 309 of the Federal Act.
4. Non-Stormwater Discharges
If the storm event monitored in accordance with this Individual Permit coincides with a non-stormwater
discharge, the permittee shall separately monitor all parameters as required under the non-stormwater
discharge permit and provide this information with the stormwater discharge monitoring report.
Planned Changes .
The permittee shall give notice to the Director as soon as possible of any planned changes at the permitted
facility which could significantly alter the nature or quantity of pollutants discharged. This notification
requirement includes pollutants which are not specifically listed in the Individual Permit or subject to
notification requirements under 40 CFR Part 122.42 (a).
6. Anticipated Noncompliance
The permittee shall give notice to the Director as soon as possible of any planned changes at the permitted
facility which may result in noncompliance with the Individual Permit requirements.
Part III Page 7 of 8

Permit No. NCS000156
Spills
The permittee shall report to the local DWQ Regional Office; within 24 hours, all significant spills as
defined in Part VI of this permit. Additionally, the permittee shall report spills including: any oil spill of 25
gallons or more, any spill regardless of amount that causes a -sheen on surface waters, any oil spill
regardless of amount occurring within 100 feet of surface waters, and any oil spill less than- 25 gallons that
cannot be cleaned up within 24 hours.
8. Bynass
1 -
rt
a. Anticipated bypass. If the permittee knows in advance of the-nee-3 for a bypass, it shall submit
prior notice, if possible at least ten days before the date of the bypass; including an evaluation of
the anticipated quality and affect of the bypass.
t-
b. Unanticipated bypass. The permittee shall submit_ notice within 24 Scrais of becoming aware of an
unanticipated bypass.
9. Twenty-four Hour Reporting
The permittee shall report to the central office or the appropriate regional office any noncompliance which
may endanger health or the environment. Any information shall be provided orally within 24 hours from
the time the permittee became aware of the circumstances: A written submission shall also be provided
within 5 days of the time the permittee becomes aware of the circumstances.
The written submission shall contain a des- ion o/f.tb�n compliance, and its causes; the period of
noncompliance, including exact dates and �times,.and'if the noncompliance has not been corrected, the
anticipated time compliance is'expected'to continue; and steps taken or planned to reduce, eliminate, and
prevent reoccurrence of the noncompliant\
The Director may waive the —tten 4e'Zor�t>ona case -by -case basis if the oral report has been received
within 24 hours. -
16. Other Noncompliance '
The permittee shall report all instances of noncompliance not reported under 24 hour reporting at the time
monitoring reports are submitted.
IL Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in a Notice of Intent to be
covered under this Individual Permit or in any report to the Director, it shall promptly submit such facts or
information.
Part III Page 8 of 8

NCS000156
PART IV LIMITATIONS REOPENER
This individual permit shall be modified or alternatively, revoked and reissued, to comply with any applicable
effluent guideline or water quality standard issued or approved under Sections 302(b) (2) (c), and (d), 304(b) (2) and
307(a) of the Clean Water Act, if the effluent guideline or water quality standard so issued or approved:
Contains different conditions or is otherwise more stringent than any effluent limitation in the individual
permit; or
b. Controls any pollutant not limited in ti.4; individual permit.
The individual permit as modified or reissued under !his paragrapl�shaIl als�contain any other requirements in the
Act then applicable.
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
The pertnittee must pay the administering and compliance m_onit6ring fee within 30 (thirty) days after being billed by
the Division. Failure to pay the fee in.timely manner in accordance with 15A NCAC 2H .0105(b)(4) may cause this
Division to initiate action to revoke the.Individual Permit.
!l PART VI DEFINITIONS
Act
See Clean Water Act.
Allowable Non-Stormwater Discharges
This permit regulates stormwater discharges. Non-stormwater discharges which shall be allowed in the
stormwater conveyance system are: .
(a) All other discharges that are authorized by a non-stormwater NPDES permit.
(b) Uncontaminated groundwater, foundation drains, air -conditioner condensate without added
chemicals, springs, discharges of uncontaminated potable water, waterline and fire hydrant
flushings, water from footing drains, flows from riparian habitats and wetlands.
(c) Discharges resulting from fire -fighting or fire -fighting training.
Best Management Practices (BMPs)
Measures or practices used to reduce the amount of pollution entering surface waters. BMPs may take the
form of a process, activity, or physical structure. More information on BMPs can be found at:
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfrn,
4. Bynass
A bypass is the known diversion of stormwater from any portion of a stormwater control facility including
the collection system, which is not a designed or established operating mode for the facility.
Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a single above ground
storage container having a capacity of greater than 660 gallons or with multiple above ground storage
containers located in close proximity to each other having a total combined storage capacity of greater than
1,320 gallons.
Part IV, V, and VI Page I of 3

Permit No. NCS000156
6. Certificate of Coverage
The Certificate of Coverage (COC) is the cover sheet which accompanies the Individual Permit upon
issuance and lists the facility name, location, receiving stream, river basin, effective date of coverage under
the permit and is signed by the Director.
7. Clean Water Act
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), aijamended, 33 USC
1251, et. seq.
8. Division or DWO
The Division of Water Quality, Department of Environment and Natural Resources.
9. Director
The Director of the Division of Water Quality, the permit is
10. EMC
The North Carolina Environmental Management Commission.
i L Grab Sample
An individual sample collected instantaneously. Grab samples that will be analyzed. (quantitatively or
qualitatively) must be taken within the fill 30 min�4f discharge.
12. Hazardous Substance
Any substance designated under.40_ CF P rtf116 pursuant to Section 311 of the Clean Water Act.
13. Landfill
1 .
// \>
A disposal facility, or part of a disposal facility where waste is placed in or on land and whir',: is not a land
_ treatment facility, a surfacedment, an injection well, a hazardous waste long-term storage facility or
r a surface storage facility. . .
1.
14. Municipal Separate Storm Sewer S, ste
A stormwater collection system within an incorporated area of local self-government such as a city or town.
15. No Exposure
A condition of no exposure means that all industrial materials and activities are protected by a storm
resistant shelter or acceptable storage containers to prevent exposure to rain, snow, snowmelt, or runoff.
Industrial materials or activities include, but are not limited to, material handling equipment or activities,
industrial machinery, raw materials, intermediate products, by-products, final products, or waste products.
DWQ may grant a No Exposure Exclusion from NPDES Stormwater Permitting requirements only if a
facility complies with the terms and conditions described in 40 CFR § 122.26(g)
16. Notice of Intent
The state application form which, when submitted to the Division, officially indicates the facility's notice of
intent to seek coverage under an Individual Permit.
17. Permittee
The owner or operator issued a certificate of coverage pursuant to this Individual Permit.
Appendix A Page 2 of 4

Permit No. NCSOGO156
18, Point Source Discharge of Stormwater
Any discernible, confined and discrete conveyance including, but not specifically limited to, any pipe, ditch,
channel, tunnel, conduit, well, or discrete fissure from which stormwater is or may be discharged to waters
of the state.
19. Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall. The time between this storm event and the previous
storm event measuring greater than 0.1 inches must be at least 72 hours. A single storm event may have a period of
no precipitation -of up to 10 hours. For example, if itxains but stops before producing any collectable discharge, a
sample may be collected if the next rain producing a discharge begins within 10 hours.
i
20. Representative Outfall Status
When it is established that the discharge of stormwater runoff from a single outfall is representative of the
discharges at multiple outfalls, the DWQ may grant re.vrescntative outfall status. Representative outfall
status allows the permittee to perform analytical rri6nitoring at a reduced number of outfalls.
21. Secondary Containment ��nk
Spill containment for the contents of the single largest w��thm the containment structure plus sufficient
freeboard to allow for the 25-year, 24-hour storm event>
22. Section 313 Water Priority Chemical
A chemical or chemical category which: ^
a. is listed in 40 CFR 372.65 pursuant`to Section 313 of Title III of the Superfund Amendments and
Reauthorization Act (SARA) of 1986, also titled the Emergency Planning and Community Right -
to -Know Act of 1986;'�� < i
b. Is present at or above'threshold leyels,at a facility subject to SARA title III, Section 313 reporting
requirements; and
C. Meets at least one ofthe following criteria:
(1) Is listed rin`appendix D of 40 CFR part 122 on Table II (organic priority pollutants), Table
III (certain metals,,cyanides, and ph.'_.Os) or Table IV (certain toxic pollutants and
- hazardous' substances);
(2) Is list4as a h zardous substance pursuant to section 311(b)(2)(A) of the CWA.at 40
CFR 116.4; or
(3) Is a pollutant for which EPA has published acute or chronic water quality criteria.
23. Severe Property Damage
Means substantial physical damage to property, damage to the control facilities which causes them to
become inoperable, or substantial and permanent loss of natural resources which can reasonably be
expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused
by delays in production.
24. Significant Materials
Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents, and plastic
pellets; finished materials such as metallic products; raw materials used in food processing or production;
hazardous substances designated under section 101(14) of CERCLA; any chemical the facility is required to
report pursuant to section 313 of Title III of SARA; fertilizers; pesticides; and waste products such as ashes,
slag and sludge that have the potential to be released with stormwater discharges.
25. Significant Spills
Includes, but is not limited to: releases of oil or hazardous substances in excess of reportable quantities
under section 311 of the Clean Water Act (Ref: 40 CFR 110.10 and CFR 117.21) or section 102 of
CERCLA (Ref: 40 CFR 302A).
Appendix A Page 3 of 4

1+'
Permit No. NCS000156
26. Stormwater Discharge Outfall SDO
The point of departure of stormwater from a discernible, confined, or discrete conveyance, including but not
limited to, storm sewer pipes, drainage ditches, channels, spillways, or channelized collection areas, from
which stormwater flows directly or indirectly into waters of the State of North Carolina.
27. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately following rainfall or as a
result of snowmelt.
28.
Stormwater Associated with IndustrialActivity
The discharge from any point source which is used for collecting and conveying stormwater and which is
directly related to manufacturing, processing or raw material storage areas at an industrial site. Facilities
considered to be engaged in "industrial activities" include those activities defined in 40 CFR 122.26(b)(14).
The term does not include discharges froriv.facilities or activities excluded from the NPDES program.
29.
Stormwater Pollution Prevention Plan
Lee.
A comprehensive site -specific plan which details measures and practices stormwater pollution and
is based on an evaluation of the pollution potential of the site.
30.
Total Maximum Daily Load (TMDL)
TMDLs are written plans for attaining and mamtaming water quality standards, in -all seasons, for a specific
water body and pollutant. (A list of approved'TMDLs for the state of North Carolina can be found at
http://h2o.enr.state.ne.us/tmdu)
31.
Toxic Pollutant
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.
32.
Vehicle Maintenance Actiyio y
Vehicle rehabilitation, mechanicat'repairs; painting, fueling, lubrication, vehicle cleaning operations, or
airport deicing operations. �-
33.
Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported,by water, air,
gravity, or ice from its site of origin which can be seen with the unaided eye.
34.
25- ear 24 hour storm event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the average, once in 25
years.
Appendix A Page 4 of 4

Permit No. NCS000156
APPENDIX A: SPECIAL CONDITIONS
ACUTE TOXICITY TESTING FOR STORMWATER OUTFALLS
I. ANNUAL TESTING (PASS/FAIL ACUTE TOXICITY TESTING):
The permittee shall conduct acute toxicity tests on a yearly, basis using protocols defined in
the North Carolina Procedure Document entitled "Pass/Fail-P;Iethodology-for Determining
Acute Toxicity in a Single Effluent Concentration" (Revised -July; 1992 or subsequent versions).
The monitoring shall be performed as a "water flea" (Ceriodaph-niq dubia) 48-hour static test.
Stormwater samples shall be collected as a single grab sample.. Samples for self -monitoring
purposes must be obtained during a representative storm 'event. The tests will be performed
during the first six months of the year (January -June).
If at any time there is significant mortality at a.stormwateC ffluent concentration of 100%5 the
results will be considered as a benchmark exceed[ ancce of,/toxicity.
-
AII toxicity testing results required as part of this permit condition will be entered on the
Stormwater Discharge Monitorin`g.Form (DMR) for the month in which it was performed,
using the parameter code TGA3B:-One copy shall be submitted to Central Files, and one copy
shall be submitted to the Stormwater Permitting Unit as follows:
_
Attention: Central Files
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Attention: Stormwater Permitting Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Additionally, DWQ Form AT-2 for Acute Pass/Fail Tests (original) is to be sent to the
following address:
Attention: NC DENR 1 DWQ 1 Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Appendix A Page 1 of 5

Permit No. NCS000156
Completed Aquatic Toxicity Test Forms shall be sent and _postmarked to the Environmental
Sciences Section and Central Files no later than 30 days after the end of the month in which the
test was conducted.
Test data shall be complete and accurate and include all supporting chemical/physical
measurements performed in association with the toxicity tests, as well as all dose/response
data. Total residual chlorine of the stormwater toxicity sample must be measured and reported
if chlorine is employed for disinfection of the,'stormwater discharge.
If there is no stormwater discharge from the facility during the months which toxicity
monitoring is required, the permittee will compk*11,e'the information Iocated at both the top of
the aquatic toxicity (AT) test form and DMR indicating the facility name, permit number,
stormwater outfall number, county, and the month/year of the report with the notation of "No
Flow" in the comment area of the form. The permittee shall submitt:three.(3) "no flow" reports:
one report shall be submitted to the Environmental Sciences Section, one to the Stormwater
Permitting Unit (SPU) Central Office, and one report shall be sent to Central Files at the
address cited above. The permittee shall submit acute toxicity. monitoring as outlined above, at the
next available representative storm event.
H. ACTIONS FOR FAILURE OF. PASS/FAIL TESTING.
Should any single scheduled m" � o�toring'indicate a failure to meet toxicity benchmark
levels, a series of measures shall occur:
1 Within 30 calendar da` s frr000rn availability of the test results the permittee shall contact
� Y t}' -
the Division SPU Central Office and the Regional Office Supervisor in writing.
If other stormwater monitoring parameters have exceeded benchmark values,
the Regional Office may exempt the permittee from additional acute toxicity
monitoring (other than regularly scheduled test periods), at the Regional Office's
discretion. The permittee shall continue to address all other stormwater
arameter benchmark exceedances.
b. If the permittee has not exceeded other benchmark values, or if the Regional
Office does not exempt the permittee from additional monitoring, the
permittee shall immediately institute monthly acute toxicity monitoring with a
48-hour-multiple dilution test per U.S. EPA Method 2002.0: "Methods for
Measuring the Acute Toxicity of Effluents to Freshwater and Marine
Organisms," EPA 821 /R-02/012 (October 2002).
Appendix A Page 1 of 5

Permit No. NCS006156
III. ACTIONS IF MONTHLY MONITORING IS INSTITUTED MULTIPLE -DILUTION
TESTING):
If monthly acute toxicity monitoring is instituted per Section II above, the permittee shall
perform the tests per the following conditions:
1) An LC50 greater than 100% shall be used as a benchmark passing endpoint;
Stormwater Permitting Unit (SPU) Central Office may determine=:alternative endpoints
as "passing" on a case -by -case basis, depending on the specific characteristics of the
facility's stormwater discharge. Multiple dilution tests wiII be run':.ki100%, 50%, 25%,
12.5%, 6.25% and 0% stormwater unless other test c6ncentrationa�,are determined
appropriate by the Stormwater Permitting Unit (SPP�U)\Cent`ral Office.
2) Multiple Dilution Test Results shall be submitted on form AT-1 for Acute Multiple
Dilution Tests. The parameter code is TAA313. Thee permittee shalE
f �f
a. Submit form AT-1 (original) to the.DW�Q.Environmental Sciences Section.
b. Send a completed a Stormwater DM/form. (original) with an attached form AT-
1 (original) to DWQ Central Files.L�
c. Send a completed -a Stormwater DMR form (copy) with an attached form AT-1
(copy) to the DWQ Stormwater Permitting Unit.
3 The permittee shall eitorm moeahllyacute toxicit monitorin un`: 1, ne of the
p P Y g—
followingL permit conditions'is met:
a. THREE CONSECUTIVE MULTIPLE -DILUTION TESTS PASS. No further
tests need to be performed until next. regularly scheduled test period.
-OR-
b. EITHER OF THE FOLLOWING OCCURS:
i. A TOTAL OF FIVE MULTIPLE -DILUTION TESTS FAIL
-OR
ii. THREE CONSECUTIVE MULTIPLE -DILUTION TESTS FAIL.
If either of the above occurs, fitrther actions are necessary. See IV. below.
4) The permittee shall submit a summary of all test results for the multiple dilution test
series along with complete copies of the test reports as received from the laboratory to
the Regional Office Supervisor, to DWQ Central Files and to SPU. These shall be sent
and postmarked within 30 calendar days of receipt of the last failed or passed multiple -
dilution test (as described above in III. 3)).
Appendix A Page L of 5

' . Permit No. NCS000156
IV. ACTIONS FOR FAILURE OF MULTIPLE DILUTION TESTS (TRE, TRI or OTHER
MEASURES):
If the permittee fails either A TOTAL OF FIVE multiple -dilution tests or THE THIRD
CONSECUTIVE multiple -dilution test as described in Section III 3) b., the permittee shall
execute the following:
1) A toxicity- reduction evaluation (TRE) shall be a -Itomatically instituted. Within 30
calendar days from availability of the test resuli,_ the permittee shall contact the
Division SPU Central Office and the Regional Office Supervisor in writing.
a. The permittee shall submit one copy of a plu..r'for conducting a THE to the DWQ
SPU,-and one copy to the DWQ Envirbirmental-Sciences' Section. These copies
shall be submitted within 60 calendar days of the date of DWQ-SPU's direction
to perform the TRE.�\
b. This plan must be approved by DWQ SPU•before the-TRE is begun. A schedule
for completing the THE shall be established ii-t.the plan approval. A Toxicity
Identification Evaluation (TIE) may -be a component of the TRE.
c. Upon DWQ's approval, the TIRE schedulemay be modified if toxicity is
intermittent during the THE investigations. A revised WET test schedule may be
f f .
established by DWQ for,thi ,period;
2) Additionally after the firs .year thatTRE results have been collected and submitted,
depending on results th%e'Regional Office nzay (among options):
• Require the permitted to install structural stormwater controls;
• Require the permittee to implement other stormwater control measures or
BMPs;
• Require the permittee to collect and treat the discharge and/or eliminate the
discharge;
• Require that the permittee implement site modifications -to qualify for the No
Exposure at
or
• Require that the permittee perform up -stream and downstream biological
assessment in the receiving water.
V. MEASURES APPLICABLE TO ALL TESTS:
All acute toxicity test results shall be submitted in a concise summary at the end of the five
year permit term. One copy of this report shall be sent to the Regional Office Supervisor, one
copy to the SPU Central Office, and one copy to the DWQ Environmental Sciences Section.
Appendix A Page 1 of 5

Permit No. NCSOOO156 - .
Should any test data from either these monitoring requirements or tests performed by the
North Carolina Division of Water Quality indicate potential impacts to the receiving stream,
this permit may be re -opened and modified to include alternate monitoring requirements.
If the Permittee monitors any pollutant more frequently than required by this permit, the
results of such monitoring shall be included in the calculation & reporting of the data
submitted on the DMR & all Acute Toxicity Forms submitted.
1
`1
NOTE: Failure to achieve test conditions as specified in the cited document, such, minimum
control organism survival and appropriate environmental controls, shall constitute an nvalid
test and will require immediate follow-up testing to be completed no later than the la?- -'day of
the month following the month of the initial monitoring. /\
;e ' ' ' -
Appendix A Page 1 of 5

NCS000533
4v' c W
Revised Permit Recommendations: Analytical Monitoring:
1. BOD, COD, TSS, Ammonia, TKN, Total Nitrogen, and Formald yde have been added to the permit because
they are potential pollutants and were above the benchmarks i e data submitted with the application. (�
2. pH has been added to the analytical monitoring re uirem s. F-
3. All analytical monitoring has been set to emi-annually uring a representative storm event as defined in Part II
Section B. The permittee must also document the tota precipitation for each event. If no discharge occurs
during the sampling period, the permittee must submit a monitoring report indicating "No Flow" within 30 days
of the end of the six-month sampling period. Additionally, samples must be taken a minimum of 60 days apart,
as specified in Table 2.
4. Benchmarks for analytical monitoring have been added to this draft permit. Exceedances of benchmark values
re ermitteej_o. increase monitoring, increase management actions, increase record keeping, and/or
install stormwater est anagement Practices (BMPs) in a tiered program. If the sampling results are above a
benchmark value, or outside of the benchmark range, for any parameter at any outfall then the facility shall
follow the Tier 1 guidelines which require a facility inspection within two weeks and implementation of a
mitigation plan within two months. If during the term of this permit, the sampling results are above the
benchmark values, or outside of the benchmark range, for any specific parameter at a specific discharge outfall
two times in a row (consecutive), then the facility shall follow the Tier 2 guidelines which require a repetition of
the steps listed for Tier 1 and also immediately institute monthly monitoring for all parameters at every outfall
where a sampling result exceeded the benchmark value for two consecutive samples.
5. The permittee is required to collect all of the analytical and qualitative monitoring samples during representative
storm events as defined in Part 11 Section B. Qualitative monitoring is required regardless of representative
outfall status.
6. The permittee is responsible for all monitoring until the renewal permit is issued. See Footnote 1 of Tables 1, 4,
and 5.
7. The flow reporting requirement has been removed per DWQ revised strategy. (The total rainfall parameter is in
this permit, however.)
8. Vehicle maintenance monitoring has been revised to semi-annually in order to coincide with analytical and
qualitative monitoring,
Other Proposed Changes to the Previous Permit:
1. Additional guidance is provided about the Site Plan requirements. The site map must now identify if the
receiving stream is impaired and if it has a TMDL established. It must also describe potential pollutants in each
outfall. The map requirements are stated more explicitly. And, the site plan must contain a list of significant
spills that have occurred in the past three years and also must certify that the outfalls have been inspected to
ensure that they do not contain non-stormwater discharges. Additional information is provided in Part II Section
A.
2. Additional requirements for the Stormwater Management Plan have been specified in Part If Section A. More
details regarding secondary containment are provided.
3. Additional requirements for the Stormwater Pollution Prevention Plan have been specified in Part 11 Section A.
The plan must also be updated annually to include a list of significant spills and to certify that the outfalls do not
contain non-stormwater discharges.
4. The facility must now implement a semi-annual Facility Inspection Program of the site's stormwater
management controls as specified in Part II Section A.
5. Information regarding the No Exposure Exclusion has been added to this draft permit. If industrial materials and
activities are not exposed to precipitation or runoff as described in 40 CFR § 122.26(g), the facility may qualify
for a No Exposure Exclusion from NPDES stormwater discharge permit requirements. Additional information
is provided in Part I Section A.
Page 6 of 8

NCS000533
Table 1. Analytical Monitoring
Sample Date
Total
Flow
(MGD)
Precipitation
(in)
Duration
(hours)
pH
BOD
COD
TSS
NH3
TKN
NO3 + NO2
Total N
Lead
Formaldehyde
Hexamine
Total P
6-9 su
30 mg1L
120
mg1L
100
mg1L
7.2
mg1L
20 mg1L
10 mg1L
30 mg1L
0.03
mg1L
Benchmark:
0.5 mg1L
Benchmark:
25,000 mg1L
Benchmark:
2 mg1L
Outfall
001
6/12/2007
1 0.083
0.91
1 0.67
1 6.3
1 12
1 87
49 1
4,2
1 6.5
1 5.8
1 12.3
1 0.012
1 0.366 1
<1.0
1 0.82
3/21/2006
0.023
0.83
.41312006
0.018
0.92
8/8/2006
0.052
1.42
11/16/2006
0.027
0.75
2/1/2007
O.G48
6.08
6/12/2007
0.04A
0.67
3/21/2006
0.029
0.83
4)312006
0.022
0.92
8/8/2006
0.065
1.42
11 /16/2006
0.034
0.75
2/1/2007
0.061
6.08
2/1/2007
0.061
6.08
6/12/2007 1
0.0541
0.67
Over Current
Benchmark
Data Not Collected
_
1
•
�j..
wn
� frn
n
1 11
KITITOM
n
1 '
• •
0�0��®�
1 11
Page 5 of 8
r
©-
0.05
46
44
2
3.96
6.63
4.51 0.18
8.15 0.54

majr.,�.�
NCDENR
North Carolina Department of Environment and
Division of Water Quality
Beverly Eaves Perdue
Governor
Mr. Peter Yurgel
Sitar LLC
333 Neils Eddy Rd.
Riegelwood, NC 28456
Dear Mr. Yurgel:
Coleen H. Sullins
Director
August 23, 2010
Natural Resources
AUG 252010
Subject: Draft NPDES Stormwater Permit
Permit No. NCS000533
Silar LLC
erg County
CoftU M 64Js
Dee Freeman
Secretary
Enclosed with this letter is a copy of the draft stormwater permit for your facility. Please review the draft
very carefuIIy to ensure thorough understanding of the conditions and requirements it contains.
The draft permit contains the foll6wing:
1. Analytical monitoring parameters, BOD, COD, TSS, Ammonia, TKN, Total Nitrogen, Formaldehyde and
pH, have been included in this permit because they are potential pollutants and were above the
benchmarks in the data submitted with the application.
2. In stream sampling for Dissolved Oxygen and 9.9 has been included for OutfalI 005.
3. Acute Toxicity has been included for this site due to concerns about multiple toxic sources as well as
onsite unknown chemical mixing and resultant unknown environmental toxicity. The ACUTE
TOXICITY APPENDIX A: ACUTE TOXICITY TESTING FOR STORMWATER OUTFALLS has been
included at the end of the permit text.
4. Note that the draft permit allows this site to discontinue monitoring four parameters; Total Phosphorus,
Methanol, Total Residual Chlorine, and Total Recoverable Lead, if the first eight samples are below
benchmark values. These parameters were included in the draft permit at the request of the Wilmington
Regional Office for consistency with the proposed NPDES stormwater permits for neighboring
operations owned by Hexion Specialty Chemicals, Inc. and Oak Bark.
5. All analytical monitoring is set to quarterly during a representative storm event as defined in Part II
Section B. The permittee must also document the total precipitation for each event. If no discharge
occurs during the sampling a?riod, the permittee must submit a monitoring report indicating "No Flow"
within 30 days of the end of the six-month sampling period. Additionally, samples must be taken a.
minimum of 60 days apart, as specified in Table 2.
6. Benchmarks for analytical monitoring are included in this draft permit. Exceedances of benchmark
values require the permittee to increase monitoring, increase management actions, increase record
keeping, and/or install stormwater Best Management Practices (BMPs) in a tiered program. If the
sampling results are above a benchmark value, or outside of the benchmark range, for any parameter at
any outfall then the facility shall follow the Tier 1 guidelines which require a facility inspection within
two weeks and implementation of a mitigation plan within two months. If during the term of this permit,
the sampling results are above the benchmark values, or outside of the benchmark range, for any specific
parameter at a specific discharge outfall two times in a row (consecutive), then the facility shall follow the
Wetlands and Stormwater Branch One
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 NOrthCarolina
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 Naturally.
Intemet: www ncwaterquality.org
An Equal Cpponunily 1 Atfirmalive Action Employer

Mr. Peter Yurgel
Silar LL.0
Permit No. NCS000533
Tier 2 guidelines which require a repetition of the steps Iisted for Tier 1 and also immediately institute
monthly monitoring for all parameters at every outfall where a sampling result exceeded the benchmark
value for two consecutive samples.
7. You are required to collect all of'the analytical and qualitative monitoring samples during representative
storm events as defined in Part II Section B. Qualitative monitoring is required regardless of
representative outfall status.
8. You are responsible for all monitoring until the renewal permit is issued. See Footnote I of Tables 1, 4,
and 5.
9. Vehicle maintenance monit� ?ring has been set to quarterly in order to coincide with analytical and
qualitative monitoring. Mooitoring for TPH has replaced Oil & Grease. This requirement appears in all
Individual Stormwater permits, however it only applies to facilities that do vehicle maintenance. If the
facility begins vehicle maintenance during the permitted timeframe then the requirements shall apply.
Please submit any comments to .re no later than thirty (30) days following your receipt of the draft.
Comments should be sent to the address listed at the bottom of this page. If no adverse comments are
received from the public or from you, this permit will likely be issued in about two months.
If you have any questions or comments concerning this draft permit, contact me at [phone] or
[e-mail]
cc: Wilmington Regional Office, Linda Willis
Stormwater Permitting Unit
Attachments: Draft Permit NCS000533
Sincerely,
! cZ--rz�
Brian Lowther
Environmental Engineer
Stormwater Permitting Unit
2

%
NCS000533
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE STORMWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina- General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the:North Carolina Environmental
Management Commission, and the Federal Water Pollution_"go ntrol Act, as amended,
Silar LLC
is hereby authorizNto,disctidrge stormwater from'a facility located at
Sitar, LLC
333 Neils Eddy Road
Riegelwood, NC
Columbus County
to receiving waters designated as Livingston Creek (Broadwater Lake), a class C; Sw stream in
the Cape Fear River Basin, in accordance with the discharge limitations, monitoring
requirements, and other conditions set forth in Parts 1, II, III, IV, V and VI hereof.
Note: Draft Permit Dates are Approximate
This permit shall become effective September 1, 2010.
This permit and the authorization to discharge shall expire at midnight on August 31, 2015.
Signed this day August 20, 2010.
for Coleen H. Sullins Director
Division of Water Quality
By the Authority of the Environmental Management Commission

F -. .
Permit No. NCS000533
TABLE OF CONTENTS
PART I INTRODUCTION
Section A- Individual Permit Coverage
Section B: Permitted Activities
Section C: Location Map
PART It MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED
DISCHARGES l � ,
Section A: Stormwater Pollution Prevention PI
Section B:
Analytical Monitoring Requiremerifs`�`�-z.`
Section C:
Qualitative Monitoring Requirements
Section D:
On -Site VehicleMaintenAce Monitoring Requirements
PART III
STANDARD CONDITIONS- FOR NPDES STORMWATER INDIVIDUAL
PERMITS %
.k
Section A:
Compliance and Liability
1. Compliance Schedule
2. Duty to Comply
3. Duty to Mitigate
4. Civil and Criminal Liability
5. Oil and Hazardous Substance Liability
6. Property Rights
7. Severability
$. Duty to Provide Information
9. Penalties for Tampering
10. Penalties for Falsification of Reports
Section B: General Conditions
1. Individual Pen -nit Expiration
2. Transfers
3. Signatory Requirements
0

Permit No. NCS000533
4. Individual Permit Modification, Revocation and Reissuance, or
Termination
5. Permit Actions
Section C: Operation and Maintenance of Pollution Controls
1. Proper Operation and Maintenance
2. Need to Halt or Reduce Not a Defense
3. Bypassing of Stormwater Control Facilities
Section D: Monitor
1.
3.
4.
5.
6.
7.
Section E:
Reporting Requirements
1.
Discharge Monitoring Reports
2.
Submitting.Reports
3.
Availaiility of Reports
4.
Non-Stormwater Discharges
5.
' Pianned Changes
6.
Anticipated Noncompliance
7.
Spills
8.
Bypass
9.
Twenty-four Hour Reporting
10.
Other Noncompliance
11.
Other Information
PART IV LIMITATIONS REOPENER
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI DEFINITIONS
31

Permit No. NCS000533
PART I INTRODUCTION
SECTION A: - INDIVIDUAL PERMIT COVERAGE
During the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge stormwater associated with industrial activity. Such
discharges shall -be controlled, limited and monitored as specified in this permit.
If industrial materials and activities are not exposed to precipitation or runoff as described in 40
C1rR § 122.26(g), the facility may qualify for a No Exposure Exclusion from NPDES stormwater
discharge permit requirements. Any ownet or operator wishing= o obtain a No Exposure
Certification must submit a No Exposure CertificatiomNOI ofm to the•Division• must receive
approval-by.the Division; must maintain no exposure conditio'r-. 'nless authorized to discharge
under a valid NPDES stormwater permit; and must r app y for the'No Exposure Exclusion once
every five (5) years.
SECTION B: PERMITTED ACTI
Until this permit expires or is m difiedr'or'"revoked,"the permittee is authorized to discharge
stormwater to the surface waters.of North Carolina or separate storm sewer system that has been
adequately treated and managed„in accordance with the terms and conditions of this individual
permit. All stormwater discharges shall=be'in accordance with the conditions of this permit.
�.;r
Any other point source discharge to surface waters of the state is prohibited unless it is an
allow' able..non-stormwater dis'chafge or is covered by another permit, authorization, or approval.
The stormwater discharges allowed by this individual permit shall not cause or contribute tc)
violations of Water Quality Standards. .
This permit does not relieve the permittee from responsibility for compliance with any other
applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or decree.
Part I Page ] of 2

SECTION C: LOCATION NIAP
Permit No. NCS000533
NCS000533
AW Scale 1.'24,000
Silar LLC
Lab tulle: 340 19' 43" N
Longitude: 780 12' S" W
County: Columbus
Recaving Stream: Livingstcn CreE}:
Stream Class: C; Sw
Sub -basin: 03-06-17 (CEpe Fear River Basin)
�'TO �- ,� .
Facility Location
Part 1 Page 2 of 2

Permit No. NCS000533
PART lI MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
SECTION A: STORM WATER POLLUTION PREVENTION PLAN
The Permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to as
the Plan. This Plan shall be considered public information in accordance with Part III, Standard
Conditions, Section E, Paragraph 3 of this individual permit. The Plan shall include, at a
minimum, the following items:
Site Plan. The site plan shall pi ovide a description of the physical facility and the
potential pollutant sources which may be expected to'.coritribute to contamination of
stormwater discharges. The site plan shall confain tli following:
(a) A general location map (USGS quadrangle -map or appropriately drafted
equivalent map), showing the facilitys'location,in relation to transportation routes
and surface waters, the name of the receivmg`water(s) to which the stormwater
outfall(s) discharges, or if the discharge -is: to a municipal separate storm sewer
a,
system; the name of the munif
�ctpality and the ultimate receiving waters, and
accurate latitude and longitdde of the'point(s) of discharge. The general location
map (or altematively.the site'map)'shall identify whether each receiving water is
rcrr _
impaired (on the state-
'.s ,303(d)' list of impaired waters) or is located in a
watershed for whicWi TNIDL has been established, and what the parameter(s)
of concern are. q=
�
(b) A narrative description of.storage practices, loading and unloading activities,
outdoor process areas, dust or particulate generating or control processes, and
waste disposal practices. A narrative description of the potential pollutants which
could be expected to be present in the stormwater discharge from each outfall.
(c) A site map drawn to scale (including a distance legend) showing: the site property
boundary, the stormwater discharge outfalls, all on -site and adjacent surface
waters and wetlands, industrial activity areas (including storage of materials,
disposal areas, process areas, loading and unloading areas, and haul roads), site
topography, all drainage features and structures, drainage areas for each outfall,
direction of flow in each drainage area, industrial activities occurring in each
drainage area, buildings, existing BMPs, and impervious surfaces. The site map
must indicate the percentage of each drainage area that is impervious.
(d) A list of significant spills or leaks of pollutants that have occurred at the facility
during the three (3) previous years and any corrective actions taken to mitigate
spill impacts.
(e) Certification that the stormwater outfalls have been evaluated for the presence of
non-stormwater discharges. The certification statement will be signed in
accordance with the requirements found in Part III, Standard Conditions, Section
Part 11 I'oge I of l0

Permit No. NCS000533
B, Paragraph 5. The permittee shall re -certify annually that the stormwater
outfalls have been evaluated for the presence of non-stormwater discharges.
2. Stormwater Management Plan. The stormwater management plan shall contain a
narrative description of the materials management practices employed which control or
minimize the exposure of significant materials to stormwater, including structural and
nonstructural measures. The stormwater management plan, at a minimum, shall
incorporate the following:
(a) Feasibility Study. A review of the technical and economic feasibility of changing
the methods of operations, and/or storage practices to eliminate or reduce exposure
of materials and processes to stormwater. ;,Wherever practical, the permittee shall
prevent exposure of all'storage areas, material handling operations, and
manufacturing or fueling operations. ln.areas .where elimination of exposure is
not practical, the stormwater management pla shail._document the feasibility of
diverting the stormwater runoff away fr&i .areas of potential contamination.
(b) Secondary Containment Requirements: and Records. Secondary containment is
required for: bulk storage of liquid �niateriais; storage in any amount of Section
313 of Title III of the Superfund Amendments and Reauthorization Act (SARA)
water priority chemicals; and storage in any amount of hazardous substances, in
order to prevent leaks and spills from contaminating stormwater runoff. A table
or summary of all such tanks and stored materials and their associated secondary
containment areas =sfMl be maintained. If the secondary contaitunent devices are
connected to sto_rrnwater.conveyance systems, the connection shall be controlled
by manually activated valves or other similar devices (which shall be secured
closed with a;locking mechanism), and any stormwater that accumulates in the
containment area'shall be at a minimum visually observed for color, foam, outfall
staining, visible sheens and dry weather flow, prior to release of the accumulated
stormwater. Accumulated stormwater shall be released if found to be
uncontaminated by any material. Records documenting the individual making the
observation, the description of the accumulated stormwater, and the date and time
of the release shall be kept for a period of five years.
(c) BMP Summary. A listing of site structural and non-structural Best Management
Practices (BMP) shall be provided. The installation and implementation of BMPs
shall be based on the assessment of the potential for sources to contribute
significant quantities of pollutants to stormwater discharges and data collected
through monitoring of stormwater discharges. The BMP Summary shall include a
written record of the specific rationale for installation and implementation of the
selected site BMPs. The BMP Summary shall be reviewed and updated annually.
3. Spill Prevention and Response Plan. The Spill Prevention and Response Plan (SPRP)
shall incorporate an assessment of potential pollutant sources based on a materials
inventory of the facility. Facility personnel (or the team) responsible for implementing the
SPRP shall be identified in a written list incorporated into the SPRP and signed and dated
by each individual acknowledging their responsibilities for the plan. A responsible
Part II Pale 2 oE' 10

Permit No. NCS000533
person shall be on -site at all times during facility operations that have the potential to
contaminate stormwater runoff through spills or exposure of materials associated with the
facility operations. The SPRP must be site stormwater specific. Therefore, an oil Spill
Prevention Control and Countermeasure plan (SPCC) may be a component of the. SPRP,
but may not be sufficient to completely address the stormwater aspects of the SPRP. The
common elements of the SPCC with the SPRP may be incorporated by reference into the
SPRP.
4. Preventative Maintenance and Good Housekeeping Program. A preventative
maintenance and good housekeeping program shall be developed. The program shall list
all stormwater control systems, stormwater discharge outfalls, all on -site and adjacent
surface waters and wetlands, industrial activity areas (including material storage areas,
material handling areas, disposal areas, process areas, loading and unloading areas, and
haul roads), all drainage features and structures;' and existing structural BMPs. The
program shall establish schedules of inspections, maintenance; and housekeeping
activities of stormwater control systems, as well'as facility' "equipment, facility areas, 'and
facility systems that present a potential for stormwater exposure or stormwater pollution.
Inspection of material handling areas and regular cleVantng schedules of these areas shall
be incorporated into the program. TimeIy9coinpliance with the established schedules for
inspections, maintenance, and housekeeping shall be recorded in writing and maintained
in the SPPP.
e.
5. Employee Training. Training programs. shall be developed and training provided at a
minimum on an annual basisfor;facility personnel with responsibilities for: spill response
and cleanup, preventative maintenance activities, and for any of the facility's operations
that have the potential to contaminate stormwater runoff. Facility personnel (or team)
responsible for implementing the training shall be identified, and their annual training
shall be documented by the
'signature of each employee trained.
6. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a specific
position(s) responsible for the overall coordination, development, implementation, and
revision to the Plan. Responsibilities for all components of the Plan shall be documented
and position assignments provided.
7. Plan Amendment. The permittee shall amend the Plan whenever there is a change in
design, construction, operation, or maintenance which has a significant effect on the
potential for the discharge of pollutants to surface waters. All aspects of the
Stormwater Pollution Prevention Plan shall be reviewed and updated on an annual
basis. The annual update shall include an updated list of significant spills or leaks of
pollutants for the previous three years, or the notation that no spills have occurred. The
annual update shall include written re -certification that the stortwater outfalls have been
evaluated for the presence of non-stormwater discharges. Each annual update shall
include a documented re-evaluation of the effectiveness of the BMPs listed in the BMP
Summary of the Stormwater Management Plan.
The Director may notify the pen-nittee when the Plan does not meet one or more of the
minimum requirements of the permit_ Within 30 days of such notice, the perrrtittee shall
Part Il Page 3 of [O

Permit No. NCS000533
submit a time schedule to the Director for modifying the Plan to meet minimum
requirements. The permittee shall provide certification in writing (in accordance with
Part III, Standard Conditions, Section B, Paragraph 5) to the Director that the changes
have been made.
8. Facility Inspections. Inspections of the facility and all stormwater systems shall occur as
part of the Preventative Maintenance and Good Housekeeping Program at a minimum on
a semi-annual schedule, once during the first half of the year (January to June), and once
during the second half (July to December), with at least 60 days separating inspection
dates (unless performed more frequently than semi-annually). These facility inspections
are different from, and in addition to, the stormwater discharge characteristic monitoring
required in Part II B and C of this permit.
ANY./
9. Implementation. The permittee shall implement --the Plan: Implementation of the Plan
shall include documentation of all monitoring,;measurements, inspections, maintenance
activities, and training provided to employees,'i&luding t'Yie log of the sampling data and
of actions taken to implement BMPs associated "ithAhe industrial activities, including
vehicle maintenance activities. Such docuni—en tationahall be kept on -site for a period of
five years and made available to the ctor. or'tttheOirector's authorized representative
immediately upon request.
.�:�'� '". ` ate, �• .
Partll Page 4 of 10

Permit No. NCS000533
SECTION B: ANALYTICAL MONITORING REQUIREMENTS
Analytical monitoring of stormwater discharges shall be performed as specified in Table 1. All
analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of 20 analytical samplings being conducted over the term of
the permit at each stormwater discharge outfall (SDO).
A representative storm event is a storm event that measures greater than 0.1 inches of rainfall. The time
between this storm event and the previous storm event measuring greater than 0.1 inches must be at least
72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if
it rains but stops before producing any collectable discharge, a sample may be collected if the next rain
nroducin2 a discharge beuins within 10 hours.
Table 1. Analytical Monitoring Requirements A,
- e
``: Characteristics`: , . -
=
Units
Measurement
Fre uencv1
`:Sample :
: T , e2 .
Sairtple
L'ocation3
Total Suspended Solids (TSS)
mg/L 4'
quarterly
Grab
SDO
Biochemical Oxygen Demand (BOD5)
m .L3
quarterly
Grab
SDO
Chemical Oxygen Demand (COD)
'm
Mquarterly
Grab
5D0
Ammonia as Nitrogen (NH3-N)
.!y m l'. , Wit+
' quarterly
Grab
SDO
��
Total Kjeldahl Nitrogen (TKN)` ,_,.
µ'me �
''_ , m L
quarterly
Grab
SDO
Nitrate + Nitrite Nitrogen 2 ���
mg/L
quarterly
Grab
SDO
Total Petroleum Hydrocarbons (TPH)
4�
[EPA Method 1664 (SGT-HEA11)]<, -xf-
' mg/1
quarterly
Grab
SDO
Hexamine
quarterly
Grab
SDO
Formaldehyde
mg/L
quarterly
Grab
SDO
Copper, Total Recoverable
mg/L
quarterly
Grab
SDO
Zinc, Total Recoverable
mg/L
quarterly
Grab
SDO
Manganese, Total Recoverable
rn L
quarterly
Grab
SDO
H
standard
quarterly
Grab
SDO
Acute Toxicity5
_
Annually
Grab
SDO
Total Rainfal14
inches
quarterly
ain Gauge I-
Footnotes:
I Measurement Frequency: Four times per year during a representative storm event.
2 Grab samples shall be collected within the first 30 minutes of discharge.
Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless representative outfall
status has been granted.
4 For each sampled representative storm event the total precipitation must be recorded. An on -site rain gauge or local rain
gauge reading must be recorded.
5 Acute toxicity shall be performed in accordance with Appendix A: Special Conditions at the end of this permit.
Part II Page 5 of 10

Permit No. NCS000533
The permittee shall complete the minimum 20 analytical samplings in accordance with the
schedule specified below in Table 2. A minimum of 30 days must separate Period 1 and
Period 2 sample dates unless monthly monitoring has been instituted under a Tier Two
response.
Table 2. Monitoring Schedule
11'[onitoring'perio`dt°2
= Start'Ed
All Years — Quarter 1
January 1
'March 31
All Years — Quarter 2
April 1
June 30
All Years — Quarter 3
July 1
Scptember .
All Years — Quarter 4
October 1
December 3T.I',*
Footnotes: I Maintain quarterly monitoring during permit renewal proceDl.a f at the expiration of this permit, the
permittee has submitted an application for renewal'ofcoverage before the submittal deadline, the permittee
�., 4/-`6 - .-y
will be considered for renewed coverage. Quarterly,inonitoring shall be done all years of the permit and the
applicant must continue quarterly monitoring until.'the renewed permit is issued.
t,,r
2 if no discharge occurs during the sampling periodthe permittee must submit a monitoring report indicating
"No Flow" within 30 days of th!;end ofthe;three=m th sampling period.
The permittee shall report the analytical result9 from the first sample with valid results within the
monitoring period. The permittee shall', orrtpare monitoring results to the benchmark values in
Table 3. The benchmark values in Table 3 are not permit limits but should be used as guidelines for
the permittee's Stormwater Pollution=Prevention Plan (SPPP). Exceedences of benchmark values
require the permittee to incr ase mo itoring, increase management actions, increase record keeping,
and/or install stormwater Best Management Practices (BMPs) in a tiered program. See below the
descriptions of Tier One and Tier Two.
Partll Page 6 of 10

Permit No. NCS000533
Tnhle 3_ Benchmark Values for Analvtical lWonitoring
Discharge Characteristics
= UnifS
Total Suspended Solids (TSS)
mg/L
100
Biochemical Oxygen Demand (BOD;)
mg
30
Chemical Oxygen Demand (COD)
mg/L
120
Ammonia as Nitrogen (NH3-N)
mg/L
7.2
Total KjeIdahl Nitrogen (TKN)
mg/L
20
Nitrate + Nitrite Nitrogen
mg/L
10
Total Petroleum Hydrocarbons (TPH)
A A4
'
(EPA Method 1664 (SGT-HEM)]r
m Q Ev
15
Hexatnine
25,000
FonnaldehydetnL
=`
0.5
Copper, Total Recoverable
:riigj
0.007
Zinc Total Recoverable
`0.067
Manganese, Total Recoverable �F<-
mg/L
NIA
r _
PH �' "''v
VIZ
standard
6 9
Acute Toxicity il,
See Appendix A:
See Appendix A:
}
Special Conditions
Special Conditions
.I
_ icr One
If: The first valid sampling results are above a benchmark value, or outside of the benchmark range, for any
parameter at any outfall;
Then: The permittee shall:
1. Conduct a stormwater management inspection of the facility within two weeks of receiving
sampling results.
2. Identify and evaluate possible causes of the benchmark value exceedence.
3. Identify potential and select the specific: source controls, operational controls, or physical
improvements to reduce concentrations of the parameters of concern, or to bring concentrations
within the benchmark range.
4, Implement the selected actions within two months of the inspection.
5. Record each instance of a Tier One response in the Stormwater Pollution Prevention Plan. Include
the date and value of the benchmark exceedence, the inspection date, the personnel conducting the
inspection, the selected actions, and the date the selected actions were implemented.
Part It Page 7 oC 10

Permit No. NCS000533
Tier Two ;
If: During the term of this permit, the first valid sampling results from three consecutive monitoring periods
are above the benchmark values, or outside of the benchmark range, for any specific parameter at a
fie discharge outfall;
Then: The permittee shall:
l . Repeat all the required actions outlined above in Tier One.
2. Immediately ins' itute- monthly monitoring for all parameters at every outfall where a sampling result
exceeded the benchmark value for two consecutive'samples. Monthly (analytical and qualitative)
monitoring shall continue until three consecutive sample results are below the benchmark values or
within the benchmark range. X'
3. If no discharge occurs during the sampling period, the permittee is required to submit a monthly
monitoring report indicating "No Flow" to comply,with re[&Aing req tirements.
4. Maintain a record of the Tier Two response in the Stormwater Pollution Prevention Plan.
Tier Thi ee
4; •.,: ', �.-.;r
During the term of this permit, if the valid sampling results required for the permit monitoring periods
exceed the benchmark value, or are outside the benchinark:fange, for any specific parameter at any specific
.,,.. -._I
outfalt on four occasions, the permitfee shall_notify the DWQ Regional Off -tee Supervisor in writing within
30 days of receipt of the fourth analytical.resi li'-,, DWQ may but is not limited to:
• require that the permittee revise, increase, or decrease the monitoring frequency for the remainder
+�1r
of the permit; 4
• require the permittee to conduct acute toxicity testing on discharges;
ZF
• require the permittee to install structural stormwater controls;
• require the permittee to implement other stormwater control measures; or
• require that the permittee implement site modifications to qualify for the No Exposure Exclusion.
This site discharges to impaired waters experiencing problems with turbidity. If a Total
Maximum Daily Load (TMDL) is approved for this segment of Livingston Creek, the pertittee
may be required to monitor for the pollutant(s) of concern in the future and submit results to the
Division of Water Quality. The Division will consider the monitoring results in determining
whether additional BMPs are needed to control the pollutant(s) of concern to the maximum
extent practicable.
If additional BMPs are needed to achieve the required level of control, the pen-nittee will be
required to (1) develop a strategy for implementing appropriate BMPs, and (2) submit a timetable
for incorporation of those BMPs into the permitted Stormwater Pollution Prevention Plan.
Part ll Page S of 10
J

Permit No. NCS000533
SECTION C: QUALITATIVE MONITORING REQUIREMENTS
Qualitative monitoring requires a visual inspection of each stormwater outfall regardless of
representative outfall status and shall be performed as specified in Table 4, during the analytical
monitoring event. [If analytical monitoring is not required, the permittee still trust conduct
quarterly qualitative monitoring.] Qualitative monitoring is for the purpose of evaluating the
effectiveness of the Stormwater Pollution Prevention Plan (SPPP) and assessing new sources of
stormwater pollution.
In the event an atypical condition is noted at a stormwater discharge outfall, the permittee shall
document the suspected cause of the condition and any actions taken -in response to the
discovery. This documentation will be maintained with the SPPP.
Table 4. Qualitative Monitoring Requirements _.
Discharge, Characteristics
Frequency).--.
-- Monitoring ..
Location 2 "
Color
quarterly-:
�" ry SDO
Odor
uarterly�'
r� SDO
Clarity�.-
uarterly-�
SDO
Floating Solids`
q'uarterly
SDO
Suspended Solids5uarterly
k l'�
SDO
Foam
-quarterly
SDO
Oil Sheen...quarterly
SDO
Erosion or deposition at the outfall
quarterly
SDO _
Other obvious indicators
quarterly
SDO
of stormwater pollution
Footnotes:
1 Measurement Frequency: Four times per year during a representative storm event, for each year until either
another permit is issued for thisTacility or until this permit is revoked or rescinded. If at the end of this
permitting cycle the permittee has submitted the appropriate paperwork for a renewal permit before the submittal
deadline, the permittee will be considered for renewed coverage. The applicant must continue quarterly
monitoring until the renewed permit is issued. See Table 2 for schedule of monitoring periods through the end of
this permitting cycle.
2 Monitoring Location: Qualitative monitoring shall be performed at each stormwater discharge outfall (SDO)
regardless of representative outfall status.
SECTION D: ON -SITE VEHICLE L%IAINTENANCE NIONITORING REQUIREMENTS
Facilities which have any vehicle maintenance activity occurring on -site which uses more than 55
gallons of new motor oil per month when averaged over the calendar year shall perfonn
analytical monitoring as specified below in Table 5. This monitoring shall be performed at all
stormwater discharge outfalls which discharge stormwater runoff from vehicle maintenance
Part 11 Page 9 of 10

Permit No. NCS000533
areas, and in accordance with the schedule presented in Table 2 (Section B). All analytical
monitoring shall be performed during a representative storm event.
Table a. Analytical Monitoring. Requirements for On -Site Vehicle Maintenance
Discharge Characteristics, ;,.
Units °-:.
' Measurement
Sample .
Sample:..
Fre uenc t
` TyOC2
Location3
H
standard_quarterly
Grab
SDO
Total Petroleum Hydrocarbons
mg/1
quarterly
Grab
SDO
(EPA Method 1664 (SGT-HEM)
Total Sus ended Solids
mg/1
quarterly
Grab
SDO
Total Rainfall4
inches
tarterly
Rain gauge
=
New Motor Oil Usage
gallons/month I
r ` uarterly
-Estimate
-
Footnotes:.:,
Measurement Frequency: Four times per year during a representative storm event, for each year until either
another permit is issued for this facility or until this permit is'revoked or rescinded. If at the end of this
permitting cycle the permittee has submitted the appropriate paperwork -for a renewal permit before the submittal
deadline, the permittee will be considered for renewed, coveragc , The'applicant must continue quarterly
monitoring until the renewed permit is issued. See Table.2 for schedule of monitoring periods through the end of
this permitting cycle.''
2 If the stormwater runoff is controlled by a sto-rmwaterdetention pond a grab sample of the discharge from the
pond shall be collected within the fir .-i... minutes. of.discharge from the pond.
-5 Sample Location: Samples shall be collected.af each stormwater discharge outfall (SDO) that discharges
stormwater runoff from area(s) where vehicle maintenance activities occur.
4 For each sampled representative storm.event the total precipitation must be recorded. An on -site or local rain
gauge reading must be recorded. 1' 10
Monitoring results shall be compared to the benchmark values in Table 6. The benchmark
values in Table 6 are not permit limits but should be used as guidelines for the permittee's
Stormwater Pollution Prevention Plan (SPPP). Exceedences of benchmark values require the
permittee to increase monitoring, increase management actions, increase record keeping, and/or
install stormwater Best Management Practices (BMPs), as provided in Part 11 Section B.
Table 6. Benchmark Values for Vehicle Maintenance Analytical Monitoring
�'Discharbe Characteristics
Units
Benchmark
pH
standard
6-9
Total Petroleum Hydrocarbons (TPH)
[EPA kfethod 1664 (SGT-HEM)]
mg/L
15
Total Suspended Solids (TSS)
mg/L
100
Part If Page 10 or 10

Permit No. NCS000533
PART II.I STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL PERMrrs
SECTION A: COiMPLIAiNCE A,ND LIABILITY
Compliance Schedule
The permittee shall comply with Limitations and Controls specified for stormwater discharges in
accordance "ith the following schedule:
Existing Facilities already operating but applying for permit coverage for the first time: The Stormwater
Pollution Prevention Plan shall be developed and implemented within 12 months of the effective date of the
initial permit and updated thereafter on an annual basis. Secondary containment, as spio�•ified in Part II,
Section Ajaragraph 2(b) of this permit, shall be accomplished within,-12 months c:f the effective date of
the initial permit issuance. °` 4
New Facilities applying for coverage for the first time and existing;factlities'previously permitted and
applying for renewal under this permit: The StormwaterFPoifution Prevention Plan shall be developed and
implemented prior to the beginning of discharges from:the-bperation of the industrial activity and be
updated thereafter on an annual basis. Secondary contaimnent-as specified in Part I1, Section A, Paragraph
'57" 4iA
2(b) of this permit shall be accomplished prior to the 6egiring of discharges from the operation of the
industrial activity.
,_.,y�}r.
2. Duty to Comply
The permittee must comply with -all conditions of this individual permit. Any permit noncompliance
constitutes a violation of the Clean Water Act'and is grounds for enforcement action; for permit
termination, revocation and rei"ssuance; or modification; or denial of a permit upon renewal application.
r .f .
a. The permittee shall comply with standards or prohibitions established under section 307(a) of the
Clean Water Act,fpif--toxid`pollutants within the time provided in the regulations that establish these
standards or prohibitions, even if the permit has not yet been modified to incorporate the
requirement.
The Clean Water Act provides that any person who violates a permit condition is subject to a civil
penalty not to exceed S25,000 per day for each violation. Any person who negligently violates any
permit condition is subject to criminal penalties of S2,500 to 25,000 per day of violation, or'
imprisonment for not more than I year, or both. Any person who knowingly violates permit
conditions is subject to criminal penalties of $5,000 to $50,000 per day of violation, or
imprisonment for not more than 3 years, or both. Also, any person who violates a permit condition
may be assessed an administrative penalty not to exceed $10,000 per violation with the maximum
amount not to exceed $125,000. [Ref- Section 309 of the Federal Act 33 USC 1319 and 40 CFR
122.41(a).]
C. Under state law, a daily civil penalty of not more than ten thousand dollars (S 10,000) per violation
may be assessed against any person who violates or fails to act in accordance with the terms,
conditions, or requirements of a permit. [Ref. NC General Statutes 143-215.6A].
d. Any person may be assessed an administrative penalty by the Director for violating section 301,
302, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any
of such sections in a permit issued under section 402 of the Act. Administrative penalties for Class
I violations are not to exceed S 10,000 per violation, with the maximum amount of any Class I
penalty assessed not to exceed $25,000. Penalties for Class It violations are not to exceed
Part III Page 1 of'S

Permit No. NCS000533
$10,000 per day for each day during which the violation continues, with the maximum amount of
any Class 11 penalty not to exceed $125,000,
3. Duty to Mitigate
The permittee shall take all reasonable steps to minimize or prevent any discharge in violation of this
individual permit which has a reasonable likelihood of adversely affecting human health or the environment.
4. Civil and Criminal Liabilit.
Except as provided in Part 111, Section C of this permit regarding bypassing of stormwater control facilities,
nothing in this individual permit shall be construed to relieve the permittee from any responsibilities,
liabilities; or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6A, 143-215.613, 143-
215.6C or Section 309 of the Federal Act, 33 USC 1319. Furthermore, the permittee is responsible for
consequential damages, such as fish kills, even though the responsibility for effective compliance may be
temporarily suspended.},:� "
5. Oil and Hazardous Substance Liability
Nothing in this individual permit shall be construed to preclude'
institution of any legal action or relieve
the permittee from any responsibilities, liabilities, -or penalties to which the permittee is or may be subject to
under NCGS 143-215.75_et seq. or Section 31�1 f the.Fed� I Act, 33 USC 1321.
6. Property Rights '
.N`,=;°
The issuance of this individual:permit does not convey any property rights in either real or personal
property, or any exclusive privileges; nor does it authorize any injury to private property or any invasion of
-P
personal rights, nor any infringement of;Ffederal, State or local laws or regulations.
7. Severability f
The provisions of this individual permit are severable, and if any provision of this individual permit, or the
application of any provision of this individual permit to any circumstances, is held invalid, the application
of such provision to other circumstances, and the remainder of this individual permit, shall not be affected
thereby.
Duty to Provide Information .
The permittee shall furnish to the Director, within a reasonable time, any information which the Director
may request to determine whether cause exists for modifying, revoking and reissuing, or terminating the
permit issued pursuant to this individual permit or to determine compliance with this individual petntit. The
permittee shall also furnish to the Director upon request, copies of records required to be kept by this
individual permit.
Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate,
any monitoring device or method required to be maintained under this individual permit shall, upon
conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more
than two years per violation, or by both. If a conviction of person is for a violation committed after a first
conviction of such person under this paragraph, punislunent is a fine of not more that $20,000 per day of
violation, or by imprisonment of not more than 4 years, or both.
Part III Page 2 o f S

Permit No. NCS000533
10. Penalties for Falsification of Re orts
The Clean Water Act provides that any person who knowingly makes any false statement, representation, or
certification in any record or other document submitted or required to be maintained under this individual
permit, including monitoring reports or reports of compliance or noncompliance shall, upon conviction, be
punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years
per violation, or by both.
SECTION B: GENERAL CONDITIONS
Individual Permit Expiration
The permittee is not authn, ized to discharge after the expiration date. u•In order to receive automatic
itt authorization to discharge beyond the expiration date, the permee;shall submit forms and fees as are
required by the agency authorized to issue permits no later=thar 180 days prior to the expiration date. Any
permittee that has not requested renewal at least 180 days pnor` to expiration or any permittee that does not
have a permit after the expiration and has not requested.=enewal at least`1180 days prior to expiration, will be
subjected to enforcement procedures as provided in NCGSwti t43-2153.6 and 33 USC 1251 et. seq.
2. Transfers
This permit is not transferable to any person except-after:notice to and approval by the Director. The
Director may require modification or revocation and reissuance of the permit to change the name and
incorporate such other requirements as maybe necessary under the Clean Water Act. The Permittee is
required to notify the Division `in`w, riting in the event the permitted facility Is sold or closed.
Signatory Requirements
!4
All applications, reports, or: information submitted to the Director shall be signed and certified.
a. All applications to be covered under this individual permit shall be signed as follows:
(1) In the case of a corporation: by a principal executive officer of at least the level of vice-
president, or his duly authorized representative, if such representative is responsible for
the overall operation of the facility from which the discharge described in the permit
application form originates;
(2) In the case of a partnership or limited partnership: by a general partner;
(3) In the case of a sole proprietorship: by the proprietor;
(4) 1n the case of a municipal, state, or other public entity: by a principal executive officer,
ranking elected official, or other duly authorized employee.
b. All reports required by the individual permit and other information requested by the Director shall
be signed by a person described above or by a duly authorized representative of that person. A
person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the
overall operation of the regulated facility or activity, such as the position of plant
manager, operator of a well or well field, superintendent, a position of equivalent
Part III Page 3 of 8

W Ir
Permit No. NCS000533
responsibility, or an individual or position having overall responsibility for environmental
matters for the company. (A duly authorized representative may thus be either a named
individual or any individual occupying a named position.); and
Q) The writtenauthorization is submitted to the Director.
C. Any person signing a document under paragraphs a. or b. of this section shall make the following
certification:
"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, accuraie,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment foe knowing violations."
. ,-. .. .- .� � r _ :'•]. .fir �., �,,7.,.:,.
The issuance of this individual permit does not prohibit, the Director from reopening and modifying the
individual permit, revoking and reissuing the individual permitlor terminating the individual permit as
allowed by the laws, rules, and regulations contained iri Title 40, Code of Federal Regulations, Parts 122
and 123; Title 15A of the North'Carolina Adiiiinistrative Code, Subchapter 2H .0100; and North Carolina
General Statute 143-215.1 et al. ;
5
5. Permit Actions +` .
M rya
The permit may be modifiedjevoked and reissued, or terminated for cause. The notification of planned
changes or anticipated noncompliance d`o snot stay any individual permit condition.
SECTION C: OPERATION AND MAINTENANCE OF POLLUTION CONTROLS
Proper Operation and Maintenance
The permittee shall at all times properly operate and maintain all facilities and systems of treatment and
control (and related appurtenances) which are installed or used by the permittee to achieve compliance with
the conditions of this individual permit. Proper operation and maintenance also includes adequate
laboratory controls and appropriate quality assurance procedures. This provision requires the operation of
back-up or auxiliary facilities or similar systems which are installed by a permittee only when the operation
is necessary to achieve compliance with the conditions of this individual permit.
Need to Halt or Reduce Not a Defense
it shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this individual permit.
Bypassin, of Stormwater Control Facilities
Bypass is prohibited and the Director may take enforcement action against a permittee for bypass unless:
a. Bypass was unavoidable to prevent loss of life, personal injury or severe property damage; and
Part III Page 4 of 8

.y - 1W
Permit No. NCS000533
b. There were no feasible alternatives to the bypass, such as the use of auxiliary control facilities,
retention of stormwater or maintenance during normal periods of equipment downtime or dry
weather. This condition is not satisfied if adequate backup controls should have been installed in
the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal
periods of equipment downtime or preventive maintenance; and
The permittee submitted notices as required under, Part I1I, Section E of this permit.
If the Director determines that it will meet the three conditions listed abov:-., the Director may approve an
anticipated bypass after considering its adverse effects.
SECTION D: MONITORING AND RECORDS
1. Representative SamplingFf`
Samples collected and measurements taken, as required herein' shaltbi �.characteristic of the volume and
nature of the permitted discharge. Analytical sampling'shall.+be performed during a representative storm
event. Samples shall be taken on a day and time that is characteristic of the discharge. All samples shall be
taken before the discharge joins or is diluted by any other w rs"t' stream, body'of water, or substance.
kMY
Monitoring points as specified in this permit shall not be changed without notification to and approval of
the Director.;';'
2. RecordinQ Results
For each measurement, sample,' inspection or maintenance activity performed or collected pursuant to the
requirements of this individual if,"'the permittee shall record the following information:
a. The date, exact place, and time of sampling, measurements, inspeeti.>r: ,r maintenance activity;
wry01
b. The individual(s)'.who,performed the sampling, measurements, inspection or maintenance activity
C. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
Flow Measurements
Where required, appropriate flow measurement devices and methods consistent with accepted scientific
practices shall be selected and used to ensure the accuracy and reliability of measurements of the volume of
monitored discharges.
4. Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations published pursuant to
NCGS 143-215.63 et. seq, the Water and Air Quality Reporting Acts, and to regulations published pursuant
to Section 304(g), 33 USC 1314, of the Federal Water Pollution Control Act, as Amended, and Regulation
440 CFR 136.
fart III Page 5 of 4

Permit No. NCS000533
To meet the intent of the monitoring required by this individual permit, all test procedures must produce
minimum detection and reporting levels'and all data generated must be reported down to the minimum
detection or lower reporting level of the procedure.
5. Representative Outfall
If a facility has multiple discharge locations with substantially identical stormwater discharges that are
required to be sampled, the permittee may petition the Director for representative outfall status. If it is
established that tha stormwater discharges are substantially identical and the permittee is granted
representative outfa.11 status, then sampling requirements may be performed at a reduced number of cutfalls.
6. Records Retention
Visual monitoring shall be documented and records maintained at the facility along with the Stormwater
I
Pollution Prevention Plan. Copies of analytical monitoring results, shall also be maintained on -site. The
permittee shall retain records of all monitoring information, including all calibration and maintenance
�.:....,
records and all original strip chart recordings for continuous monitonng.instrumentation, and copies of all
reports required by this individual permit for a period of,at least 5 years from the date of the sample,
measurement, report or application. This period may be extended by request of the Director at any time.
7. Inspection and Entry
The permittee shall allow the Director, or an'authonzed representative (including an authorized contractor
acting as a representative of the Director), or in case of of a facility which discharges through a municipal
separate storm sewer system, an authorized representative of a municipal operator or the separate storm
sewer system receiving the discharge, upon the presentation of credentials and other documents as may be
required by law, to;
a. Enter upon the per4ittee's-premises where a regulated facility or activity is located or conducted,
or where records'must be kept under the conditions of this individual permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of
this individual permit;
Inspect at reasonable times any facilities, equipment (including monitoring and control equipment),
practices, or operations regulated or required under this individual permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring individual permit compliance
or as otherwise authorized by the Clean Water Act, any substances or parameters at any location.
SECTION E: REPORTING REQUIRENIENTS
Discharge Monitoring Reports
Samples analyzed in accordance with the terms of this pert -nit shall be submitted to the Division on
Discharge Monitoring Report forms provided by the Director. Submittals shall be delivered to the Division
no later than 30 days from the date the facility receives the sampling results from the laboratory.
The permittee shall submit an Annual Summary Data Monitoring Report to the appropriate DWQ Regional
Office in February of each year. The submittal shall be on forms supplied by the Division.
Part II l Page 6 of S

Permit No. NCS000533
When no discharge has occurred from the facility during the report period, the permittee is required to
submit a discharge monitoring report, within 30 days of the end of the three-month sampling period, giving
all required information and indicating "NO FLOW" as per NCAC T15A 0213.0506.
The permittee shall record the required qualitative monitoring observations on the SDO Qualitative
Monitoring Report form provided by the Division, and shall retain the completed forms on site. Visual
monitoring results should not be submitted to the Division, except upon DWQ's specific requirement to do
so.
2. Submittinu Reports
Two signed copies of Discharge Monitoring Reports (DMRs) shall be submitted to:
Central Files±.
Division of Water Quality ,
:. eg in
1617 Mail Service Center s
Raleigh, North Caro Iina'27699=1617 r}
10
In addition a separate signed Annual SummaryDMR c�op: all be submitted to the [oral DWQ Regional
Office. RO by March 1 of each year.
Addresses for each RO and the counties covered byreach : RO can be found here:
htta:/hv��,w.enr.state.ne.us/html/re-_ionaloffices.html.4The permittee shall retain the completed originals
on site. Visual monitoring results should riot be submitted to the Regional Offices or Central Files unless
specifically requested by.DWQ`.-t
AvailabilitvofReports
4_.`'r>?,
Except for data determives to be confidential under NCGS 143-215.3(a)(2) or Section 308 of the Federal
Act, 33 USC 1318, all reports prepared in accordance with the terms shall be available for public inspection
at the offices of the Division of.,Water Quality. As required by the Act, analytical data shall not be
considered confidential. Knowingly making any false statement on any such report may result in the
imposition of criminal penalties as provided for in NCGS 143-215.613 or in Section 309 of the Federal Act.
4. Non-Stormwater Discharges
If the storm event monitored in accordance with this Individual Permit coincides with a non-stormwater
discharge, the permittee shall separately monitor all parameters as required under the non-stormwater
discharge permit and provide this information with the stormwater discharge monitoring report.
Planned Chances
The permittee shall give notice to the Director as soon as possible of any planned changes at the permitted
facility which could significantly alter the nature or quantity of pollutants discharged. This notification
requirement includes pollutants which are not specifically listed in the Individual Permit or subject to
notification requirements under 40 CFR Part 122.42 (a).
Anticipated Noncompliance
The permittee shall give notice to the Director as soon as possible of any planned changes at the permitted
facility which may result in noncompliance with the Individual Permit requirements.
Part III Page 7 o f S

Permit No. NCS000533
7. apiu1
The permittee shall report to the local DWQ Regional Office, within 24 hours, all significant spills as
defined in Part VI of this permit. Additionally, the permittee shall report spills including: any oil spill of 25
gallons or more, any spill regardless of amount that causes a sheen on surface waters, any oil spill
regardless of amount occurring within 100 feet of surface waters, and any oil spill less than 25 gallons that
cannot be cleaned up within 24 hours.
Bypass
a. Anticipated bypass. If the permittee knows in advance of the need for a bypass, it shall submit
prior notice, if possible at least ten days before the date of the bypass; including an evaluation of
the anticipated quality and affect of the bypass.
b. Unanticipated bypass. The permittee shall submit notice within 24 hours of becoming aware of an
yr
unanticipated bypass.
9_ Twenty-four Hour Reporting
The permittee shall report to the central office or the appropriate regional office any noncompliance which
may endanger health or the environment. Any information shall be provided orally within 24 hours from
the time the permittee became aware of the circumstances., A written submission shall also be provided
within 5 days of the time the permittee becomesaware of the circumstances.
The written submission shall contain a descriptio of the noncompliance, and its causes; the period of
noncompliance, including. exaci dates and times arid'if"the noncompliance has not been corrected, the
anticipated time compliance is expected`to ontinue; and steps taken or planned -to reduce, eliminate, and
prevent reoccurrence of the noncomplianceo-
The Director may waive the written report on a case -by -case basis if the oral report has been received
within 24 hours: 4.
10, Other Noncompliance
The permittee shall report all instances of noncompliance not reported under 24 hour reporting at the time
monitoring reports are submitted.
H. Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in a Notice of Intent to be
covered under this Individual Permit or in any report to the Director, it shall promptly submit such facts or
information.
Part [II Page 8 of g

W -
NCS000533
PART IV LIMITATIONS REOPE`ER
This individual permit shall be modified or alternatively, revoked and reissued, to comply with any applicable
effluent guideline or water quality standard issued or approved under Sections 302(b) (2) (c), and (d), 304(b) (2) and
307(a) of the Clean Water Act, if the effluent guideline or water quality standard so issued or approved:
a. Contains different conditions or is otherwise more stringent than any effluent limitation in the individual
permit-, or
b. Controls any pollutant not limited in the individual permit.
The individual permit as modified or reissued under this paragraph'
Act then applicable.
PART V ADMINISTERING AND
AF
p:o n
The permittee must pay the administering and compliance
the Division. Failure to pay the fee in timely maker in acc
Division to initiate action to revoke the`[ridividual:.Petinit.
PARTA I
] . Act
See Clean Water Act.
contain any other regt:irements in the
E MONITORING FEE
tg fee within 30 (thirty) days after being billed by
with 15A NCAC 2H .0105(b)(4) may cause this
DEFINITIONS
Allowable Non-Stormwater Discharges
This permit regulates stormwater discharges. Non-stormwater discharges which shall be allowed in the
stormwater conveyance system are:
(a) . All other discharges that are authorized by a non-stormwater NPDES permit.
(b) Uncontaminated groundwater, foundation drains, air -conditioner condensate without added
chemicals, springs, discharges of uncontaminated potable water. waterline and fire hydrant
flushings, water from footing drains, flows from riparian habitats and wetlands.
(c) Discharges resulting from fire -fighting or fire -fighting training.
Best Management Practices BMPs
Measures or practices used to reduce the amount of pollution entering surface waters. BMPs may take the
form of a process, activity, or physical structure. More information on BMPs can be found at:
littp://cfpub.epa.gov/npdes/ston-nwater/nienuofbmps/index,cfni.
4. Bypass
A bypass is the known diversion of stormwater from any portion of a stormwater control facility including
the collection system, which is not a designed or established operating mode for the facility.
Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a single above ground
storage container having a capacity of greater than 660 gallons or with multiple above ground storage
containers located in close proximity to each other having a total combined storage capacity of greater than
1,320 gallons.
Appendix A: Page 1 of 4

1W
Permit No_ NCS000533
6. Certificate of Coverage
The Certificate of Coverage (COC) is the cover sheet which accompanies the Individual Permit upon
issuance and lists the facility name, location, receiving stream, river basin, effective date of coverage under
the permit and is signed by the Director.
7. Clean Water Act
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as amended, 33 USC
1251, et. seq.
$. Division or DWO
The Division of Water Quality, Department of Environment and Natural Resources.
9.
10.
11.
12.
13.
14.
Director
The Director of the Division of Water Quality, the permit is
EMC
The North Carolina Environmental Management Comi6s
Grab Sample
An individual'sample collected instant
qualitatively) must be taken within the
Hazardous Substance
Any substance designate
Landfill
A disposal facility or pa
treatment facility, a surfe
a surface storage facility
ly. Grab samples that will be analyzed (quantitatively or
0 minutes'ofdischarge.
6 pursuant to Section 311 of the Clean Water Act.
lity where waste is placed in or on land and which is not a land
in injection well, a hazardous waste long-term storage facility or
Municipal Separate Storm Sewer System
A stormwater collection system within an incorporated area of local self-government such as a city or town.
15. No Exposure
A condition of no exposure means that all industrial materials and activities are protected by a storm
resistant shelter or acceptable storage containers to prevent exposure to rain, snow, snowmelt, or runoff.
Industrial materials or activities include, but are not limited to, material handling equipment or activities,
industrial machinery, raw materials, intermediate products, by-products, final products', or waste products.
DWQ may grant a No Exposure Exclusion from NPDES Stormwater Permitting requirements only if a
facility complies with the terms and conditions described in 40 CFR § 122.26(g)
16. Notice of Intent
The state application form which, when submitted to the Division, officially indicates the facility's notice of
intent to seek coverage under an Individual Permit.
17. Permittee
The owner or operator issued a certificate of coverage pursuant to this Individual Permit.
Appendix A! Page 2 of Pages

Permit No. NCS000533
18. Point Source Discharge of Stormwater
Any discernible, confined and discrete conveyance including, but not specifically limited to, any pipe, ditch,
channel, tunnel, conduit, well, or discrete fissure from which stormwater is or may be discharged to waters
of the state.
19. Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall. The time between this storm event and the previous
storm event measuring ,greater than 0.1 inches must be at least 72 hours. A single storm event may have a period of
no precipitation of up to 10 hours. For example, if it rains but stops before producing any collectable discharge, a
sample may be collected if the next rain producing a discharge begins within 10 hours.
20. Representative Outfall Status.
When it is established that the, discharge of stormwater runoff from a single outfall is representative of the
discharges at multiple outfalls, the DWQ may grant representative outfall status. Representative outfall
status allows the permittee to perform analytical monitoring at a*reduced number of outfalls.
21. Secondary Containment
Spill containment for the contents of the single largest tartk within the containment structure plus sufficient
freeboard to allow for the 25-year, 24-hour storm event.Pkt`
22. Section 313 Water Priority Chemical F
A chemical or chemical category which: F
a. Is listed in 40 CFR 372.65 pursuant'to Section 313 of Title III of the Superfund Amendments and
Reauthorization Act (SARA) of.] 986, also_titled the Emergency Planning and Community Right -
to -Know Act of 1986;`., aka °A
b. Is present at or abo4thieshold levels at a facility subject to SARA title III, Section 313 reporting
requirements; and Tpj"
C. Meets at least one ofthe following criteria:
1 Is listed.ir'..` r endix}D'of40 CFR art 172 on TablelI (organic priority
O pp p ( g p ry pollutants), Table
III (certain metals, cyanides, and phenols) or Table IV (certain toxic pollutants and
hazardous s.ub.stances);
(2) Is listed -as a•hazardous substance pursuant to section 31 l(b)(2)(A) of the CWA at 40
CFR 116.4; or
(3) Is a pollutant for which EPA has published acute or chronic water quality criteria_
23. Severe Property Damage
Means substantial physical damage to property, damage to the control facilities which causes them to
become inoperable, or substantial and permanent loss of natural resources which can reasonably be
expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused
by delays in production.
24. Significant Materials
Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents, and plastic
pellets; finished materials such as metallic products; raw materials used in food processing or production;
hazardous substances designated under section 101(14) of CERCLA; any chemical the facility is required to
report pursuant to section 313 of Title Ill of SARA; fertilizers; pesticides; and waste products such as ashes,
stag and sludge that have the potential to be released with stormwater discharges.
25. Significant spills
Includes, but is not limited to: releases of oil or hazardous substances in excess of reportable quantities
under section 311 of the Clean Water Act (Ref: 40 CFR 110.10 and CFR 117.21) or section 102 of
CERCLA (Ref 40 CFR 302.4).
Appendix A: Page 3 of Pages

Permit No. NCS000533
26. Stormwater Discharge Outfall (SDO)
The point of departure of stormwater from a discernible, confined, or discrete conveyance, including but not
limited to, storm sewer pipes, drainage ditches, channels, spillways, or channelized collection areas, from
which stormwater flows directly or indirectly into waters of the State of North Carolina.
27. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately following rainfall or as a
result of snowmelt.
28. Stormwater Associated with Industrial Activi
The discharge from any point source which is used for collecting and conveying stormwater and which is
directly related to manufacturing, processing or raw material storage areas at an industrial site. Facilities
considered to be engaged in "industrial activities' include those activities defined in 40 CFR 122.26(b)(14).
The term does not include discharges from facilities or activities'excl`uded from the NPDES program.
29. Stormwater Pollution Prevention Plan;
A comprehensive site -specific plan which -details measures and practnces'to reduce stormwater pollution and
is based on an evaluation of the pollution potential of the'site'..?,
30. Total Maximum Daily Load (TML) D�
TMDLs. are written plans for attaining and maintaining wat5Fquality standards, in all seasons, for a specific
water body and pollutant. (A list of approved'IMDLs fo_r the state of North Carolina can be found at
http://h2o.enr.state.ne.us/tmdl/) ,£
} '_!,^ j.
31. Toxic Pollutant
Any pollutant listed as toxic undo, Section 307(a)(1) of the Clean Water Act.
32. Vehicle Maintenance Activity —
Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication', vehicle cleaning operations, or
airport deicing operations a" Y
33. Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported by water, air,
gravity, or ice from its site of origin which can be seen with the unaided eye.
34. 25-year, 24 hour storm event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the average, once in 25
years.
Appendix A: Page 4 of 4 Pages

NCS000533
APPENDIX A: ACUTE TOXICITY TESTING FOR STORUMWATER OUTFALLS
L ANNUAL TESTING (PASSIFAIL ACUTE TOXICITY TESTING):
The permittee shall conduct acute toxicity tests on a yearly basis using protocols defined in the North
Carolina Procedure Document entitled"Pass/Fail Methodology for Determining Acute Toxicity in a
Single Effluent Concentration" (Revised -July, 1992 or subsequent versions). The rnonitoring shall be
performed as a `water flea" (CeriodaThnia dubia) 48-hour static test.
Stormwater samples shall be collected as a single grab sample. Samples for self -monitoring purposes
must be obtained during a representative storm event. The tests _%@@ e performed dur•irig the first six
months of the year (January -June). .0 h,dh_.s
If at any time there is significant mortality at a stormwater, effluent concentration of 100%, the results
'P.—
will be considered as a benchmark exceedance of toxicity.
All toxicity testing results required as part of this permit condition will be entered on the Stormwater
.,�
Discharge Monitoring Form (DMR) for the month in which`it was performed, using the parameter code
TGA3B. One copy shall be submitted to Central Files,land one copy shall be submitted to the
Stormwater Permitting Unit as follows: t-'Ot
44
Attention:. Central Files
Division c f Water Quality
1617 Mail Service Center
Raleigh; North Carolina 27699-1617
'.'s VT'.y�
Attention: Stormwater Permitting Unit
Division of Water Quality -
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Additionally, DWQ Form AT-2 for Acute Pass/Fail Tests (original) is to be sent to the following
address:
Attention: NC DENR / DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be sent and postmarked to the Environmental Sciences
Section and Central Files no later than 30 days after the end of the month in which the test was
conducted.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine
of the stormwater toxicity sample must be measured and reported if chlorine is employed for disinfection
of the stonnwater discharge.
If there is no stormwater discharge from the facility during the months which toxicity monitoring is
required, the permittee will complete the information located at both the top of the aquatic toxicity (AT)
Appendix A: Page t of4

Permit No. NCS000533
test form and DMR indicating the facility name, permit number, stormwater outfall number, county, and
the month/year of the report with the notation of "No Flow" in the comment area of the form. The
permittee shall submit three (3) "no flow" reports: one report shall be submitted to the Environmental
Sciences Section, one to the Stormwater Permitting Unit (SPU) Central Office, and one report shall be
sent to Central Files at the address cited above. The permittee shall submit acute toxicity monitoring as
outlined above, at the nest available representative storm event.
IL ACTIONS FOR FAIL URE OF PASSIFAIL TESTING:
Should any single scheduled monitoring indicate a failure to meet toxicity benchmark levels, a
series of measures shall occur:
1) Within 30 calendar days from availability of the test results,,the permittee shall contact the
Division SPU Central Office and the Regional Office Supervisor in writing.
a. If other stormwater monitoring param tersehave e_rcee—ded benchmark values, the
Regional Office may exempt the permittee'fr m additional acute toxicity monitoring
(other than regularly scheduled test periods), at ?he.Regional Office 's discretion. The
permittee shall continue to address all other stormwater parameter benchmark
exceedances.Y
b. If the permittee has not exceeded other,benchmark values, or if the Regional Office
does not exempt the,.permittee froth additional monitoring, the permittee shall
immediately institutemoizthly`%acute toxicity monitoring'with'a 48-hour multiple dilution
test per U.S. EPA Method 2002 Oc"Methods for Measuring the Acute Toxicity of
Effluents to Freshwater a nd Marine Organisms,' EPA 821/R-02/012 (October 2002).
III. ACTIONSIFA10JVTHLYMONITORIrVGIS INSTITUTED 0VULTIPLE-DILUTI0N
TESTItVG)_;
If monthly acute toxicity monitoring is instituted per Section 11 above, the permittee shall perform
the tests per the following conditions:
1) An LC50 greater than 100% shall be used as a benchmark passing endpoint; Stormwater
Permitting Unit (SPU) Central Office may determine alternative endpoints as "passing" on a
case -by -case basis, depending on the specific characteristics of the facility's stormwater
discharge. Multiple dilution tests will be run at 100%. 50`/1, 25°/., 12.5%, 6.25" and 0°
stormwater unless other test concentrations are determined appropriate by the Stormwater
Permitting Unit (SPU) Central Office.
2) Multiple Dilution Test Results shall be submitted on form AT-1 for Acute Multiple Dilution
Tests. The parameter code is TAA3I3. The permittee shall:
a. Submit form AT-1 (original) to the DWQ Environmental Sciences Section.
b. Send a completed a Stormwater DMR form (original) with an attached form AT-1
(original) to DWQ Central Files.
c. Send a completed a Stormwater DMR form (copy) with an attached forth AT -I (copy) to
the DWQ Stormwater Permitting Unit.
Appendix A: Page 2 or4 Panes

Permit No. NCS000533
3) The permittee shall perform monthly acute toxicity monitoring until one of the followina
permit conditions is met:
a. THREE CONSECUTIVE MULTIPLE -DILUTION TESTS PASS. No further tests
need to be performed until next regularly scheduled test period.
-OR-
b. _EITHER OF THE FOLLOWING OCCURS:
i. A TOTAL OF FIVE MULTIPLE -DILUTION TESTS FAIL
-OR-
ii. THREE CONSECUTIVE MULTIPLE -DILUTION TESTS FAIL.
If either of the above occurs, fttt-ther actions are necessaty. See IV. below.
4) The permittee shall submit a summary of all test results forithe multiple dilution test series
along with complete copies of the test reports as received from the laboratory to the Regional
Office Supervisor, to DWQ Central Files and to SPU'These shall be,' ent and postmarked within
30 calendar days of receipt of the last failed or passed multipledilution test (as described above
in X. 3)).
IV. ACTIONS FOR FAIL URE OF MULTIPLE DILUTION TESTS (TRE, TRI or OTHER
AlEASURES): t
If the permittee fails, either A TOTAL OF FIVE m6 tiple-dilution tests or THE THIRD
CONSECUTIVE multiple-dilutiodle-st as described in Section 111 3) b., the permittee shall execute
the following: apFs
1) A toxicity reduction evablat:on (TRE) shall be automatically instituted. Within 30 calendar days
„b
from availability of the. ;test results; the permittee shalt contact the Division SPU Central Office
and the Regional Office:S'.ipervisor in writing.
a. The permittee shall'submit one copy of a plan for conducting a TRE to the DWQ SPU,
and one copy to the DWQ Environmental Sciences' Section. These copies shall be
submitted within 60 calendar days of the date of DWQ SPU's direction to perform the
TRE.
b. This plan must be approved by DWQ SPU before the TRE is begun. A schedule for
completing the TRE shall be established in the plan approval. A Toxicity Identification
Evaluation (TIE) may be a component of the TRE.
c. Upon DWQ's approval, the TRE schedule may be modified if toxicity is intermittent
during the TRE investigations. A revised WET test schedule may be established by
DWQ for this period.
?) Additionally after the first year that TRE results have been collected and submitted, depending
on results the Regional Office inav (among options):
• Require the permittee to install structural stonnwater controls;
• Require the permittee to implement other stormwater control measures or BMPs;
• Require the permittee to collect and treat the discharge and/or eliminate the
discharge;
• Require that the permittee implement site modifications to qualify for the No
Exposure Exclusion; or
Appendix A: Page 3 of Pages

Permit No. NCS000533
• Require that the permittee perform up -stream and downstream biological assessment
in the receiving water.
V. MEASURES APPLICABLE TO ALL TESTS:
All acute toxicity test results shall be submitted in a concise summary at the end of the five year
permit term. One copy of this report shall be sent to the Regional Office Supervisor, one copy to the
SPU Central Office, and one copy to the DWQ Environmental Sciences SeeLon.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements. t
If the Permittee monitors any pollutant more frequently than required by this permit, the results of such
monitoring shall be included in the calculation & reporting of thedata`submit'ted on the DMR & all
Acute Toxicity Forms submitted. F" SL
NOTE: Failure to achieve test conditions as specified ,in the~cit d document, such as minimum control
organism survival and appropriate environmental controls,'shall.constitute an invalid test and will require
immediate follow-up testing to be completed no later than`the last day of the month following the month
of the initial monitoring.
,'.011
¢�
Appendix A: Page 4 of-4 Pares

Please print or type iii the unshaded areas only
fill-in areas are s 7aced for elite type, i.e., 12 charactefsrnch . For Approved. OMB No. 2040-0086. Approval expires 5-31-92
FORM U.S. ENVIRONMENTAL PROTECTION AGENCY I. EPA I.D. NUMBER
\�"�E��1 GENERAL INFORMATION F NCD 024 766 719 TiA o
Consolidated Permits Program
GENERAL (Read the "General Instructions" before startinq.) 1 2 13 14--T 15
I. EPA I.D. NUMBER
III. FACILITY NAME
V. FACILITY
MAILING LIST
VI. FACILITY
LOCATION
NCD024766719
Oak- Bark Corporation
Attn: Peter R. Yurgel
333 Neils Eddy Rd.
Riegelwood N.C. 28456
GENERAL. INSTRUCTIONS
If a preprinted label has been provided, affix it
in the designated space. Review the
i information carefully; f any of it is incorrect,
cross through it and enter the correct data in
the appropriate fill-in area below. Also, if any of
the preprinted data is absent (the area to the
left of the label space lists the infannation that
should appear), please provideit in the proper
i fill-in area(s) below. If the label s complete and
correct, you need not complete Items I, Ill, V
and VI(except VI-B which must be completed
regardless). Complete all items if no label has
been proved. Defer to the instructions for
detailed item descriptions and for the legal
authorization under which this data is collected.
H. POLLUTANT CHARACTERISTICS
INSTRUCTION& Complete A through 3 to determine whether you need to submit any permit application forms to the EPA. If you answer 'yes" to any
questions, you must submit this form and the supplemental from listed in the parenthesis following the question. Mark "X" in the box in the third column if the
supplemental form is attached. If you answer "no" to each question, you need not submit any of these forms. You may answer "no" if your activity is
excluded from permit requirements; see Section C of the instructions. See also, Section D of the instructions for definitions of bold-faced terms,
SPECIFIC QUESTIONS
MARK "A"
I
SPECIFIC QUESTIONS
I MARK "X"
YES
NO
FORM
ATTACHED
YES
NO
FORM
ATTACHED
Is this facility a publicly owned treatment works
which results in a discharge to waters of the
U.S.? (FORM 2A)
❑
®
❑
B. Does or will this acility (either existing or
proposed) include a concentrated animal
feeding operation or aquatic animal
production facility which results in a discharge
to waters of the U.S.? (FORM 2B)
21
16
17
18
19
20
C. s this facility which currently resu is in
discharges to waters of the U.S. other than
those described in A or B above? FORM 2C
®
D. Is this proposal dlity (_Other than those described
in A or B above) which will result in a discharge
to waters of the U.S.? FORM 20-
❑
27
22
23
24
25
26
E. Does or will this facility treat, store, or dispose of
hazardous wastes? (FORM 3)
❑
®
Do you or will you inject at this facility industrial or
municipal effluent berow the lowermost stratum
❑
Z
El
containing, within one .quarter mite of the well
bore, underground sources of drinking water?
(FORM 4)
33
28
29
30
31
32
G. Do you or m-ill you inject at this facility any
H. Do you or will you inject at this facility fluids for
produced water other fluids which are brought to
the surface in connection with conventional oil or
natural gas production, inject fluids used for
enhanced recovery of oil or natural gas, or inject
❑
®
❑
special processes such as mining of sulfer by the
Frasch process, solution mining of minerals, -in'
situ combustion of fossil fuel, or recovery of
geothermal energy? (FORM 4)
fluids for storage of liquid hydrocarbons?
FORM 4
34
35
36
37
38
39
I. Is this facility a proposed stationary source
s this facility a proposed stationary source
which is one of the 28 Industrial categories listed
in ❑
which is NOT one of the 28 industrial categories ❑ ® ❑
M ❑ in instructions
the instructions and which will potentially emit
listed the and which will potentially
100 tons per year of any air pollutant regulated
emit 250 tons per year of any air pollutant
under the Clean Air Act and may affect or be
regulated under the Clean Air Act and may affect
located in an attainment areal FORM 5 40 1
41 1 42 1 or be located in an attainment are? FORM 5 43, 44 45
III. NAME OF FACILITY
1P SKIP I Silar LLC
IV. FACILITY CONT
A. NAME & TITLE (last, first, &
c Peter R. Yurgel / Plant manager
2
15 16
V. FACILITY MAILING ADDRESS
A. STREET OR P.O. BOX
333 Neils Eddv Rd.
B. PHONE
910 1 1 655
B. CITY OR TOWN I C. STATE I D. ZIP CODE
C Riegelwood N.C. 28456
4
15 J 16 4041 42 47 51
VI. FACILITY LOCATION
A. STREET, ROUTE NO. OR OTHER SPECIFIC IDENTIFIER
C 333 Neils Eddy Rd.,
15 J 16 45
B. COUNTY NAME
Columbus
46 70
C. CITY OR TOWN D. STATE E. ZIP CODE
r Riegelwood N.C. 28456
6980
Columbus

,1L
CONTINUED FROM THE FRONT
V ill. ur'r-Mm 1 Vr% 1&Nr-W8 1V1P% I Ivry
A. NAME B. Is the name listed in Item
c
Sitar LLC Vlli-A also the owner?
[:]YES X NO
8
18
1 19 55
C. STATUS OF OPERATOR Enter the gperopriate letter into the answer box; if "Other,"specify.)
D. PHONE area code & no.
F = FEDERAL M = PUBLIC (other than federal or state)
S = STATE O = OTHER (specify)
P = PRIVATE
p
{specify)
c
910
65
6980
A
15
�
16 16
19 21
22 25
E. STREET OR PO BOX
333 Neils Eddy Rd.
26 55
F. CITY OR TOWN
G. STATE H. ZIP CODE IX. INDIAN LAND
c
Riegelwood
Is the facility located on Indian lands?
N.C. 28456 �
❑ YES ® NO
1 42 42 47 51
D. PSD Air Emissions from Proposed Sources
9 P a 09749R00 Synthetic Minor Air Permit
15 1 16 17 18 30
a
15 16 40
X. EXISTING ENVIRONMENTAL PERMITS
A. NPDES (Discharges to Surface Water
N N/A
9
15 1
16 1 17 1 18 30
B. UIC (UndegirDund 12tection of Fluids
E. OTHER_
(specify)
i N/A
T
a
N/A
9
U
9
15 1
16
1 17 1 18 30
15
16
i7
18 30
C. RCRA Hazardous Wastes
E. OTHER (specify) (Specify)
c T ° N/A
15 1 16 1 17 1 18 30
TR '
NCD024766719
9
15 16 17
XI. MAP
1 46 30 J
Attach to this application a topographic map of the area extending to at feast one mile beyond property bolindaries.'.The map must
show the outline of the.facility,'the location of each of its existing and proposed intake and discharge structures, each of its
hazardous waste treatment, storage, or disposal facilities, and each well where it injects fluids underground. Include all springs,
rivers and other surface water bodies in the map area. See instructions for precise requirements.'
XII. NATURE OF BUSINESS(provide a brief descri tion
Sitar LLC (a division of MPD Holdings) manufactures Organosilicon compounds and Fine organics using batch
processes.
XIII. CERTIFICATION see instructions
1 certify underpenalty of law that I have personally examined and am familiar with the information submitted in this application and
all attachments and that, based on my inquiry of those persons immediately responsible for obtaining the information contained in
the application, 1 believe that the information is true, accurate and complete, l am aware that there are significant penalties for
submitting false information, including the possibility of fine and imprisonment.✓.,
TITLE (type or print)
John Shibley / President
COMMENTS FOR OFFICIAL USE ONLY
B. VtNAT
C, D TE SIG ED
S 12 1101

EPA ID Number (copy from Item f of Form 1) I Form Approved. OMB No, 2040.0086
Please print or type in the unshaded areas any. NCD 024 766 719 1 Approval expires 5-31-92
U.S. Environmental Protection Agency
FORM IforEPA
Washirgton, DC 20460
ZF Application for Permit to Discharge Storm Water
NPOES Discharges Associated with industrial Activity
Paperwork Reduction Act Notice
Public reporting burden for this application is estimated to average 26.6 hours per application, including time for reviewing instructions, searching exsting data sources,
gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding the burden estimate, any other aspect
of this collection of information, or suggestions for improving this form, including suggestions which may increase or reduce this burden to: Chief, Information policy
Branch; PM-223, U.S. Environmental Protection Agency, 1200 Permsytvania Avenue, NW, Washington, pC 20460, or Director. Orrice of Information and Regulatory
Affairs, office of Management and Budget, Washington, OC 20503.
1. Outfafl Location
For each outfall, Scat the latitude and longitude of its locallon to the nearest 15 seoonds and the name or the receiving water.
A Ourfall Number
(list]
B taatttude
C. Longitude
D. Receiving Water
(name}
001
34.00
19.00
69.00
78.00
12.Oc
2.00
Livingston Creek
002
34.00
19-00
71.00
78.00
12.oil
8.00
Livingston Creek
Cos
34.00
19.00
76.00
7a.00
12-00
6.00
Livingston Creek
fl. 11IIFTI V YCI f iCl lu
A Are you now required bry any Federal, State, or local authority to meet any implementation schedule for the construction, upgrading or operation of wastewater
treatment equipment or practices or any other environmental programs which may affect the discharges described in this application? This includes, but is not limited
to, permit conditions, administrative or enforcement orders, enforcement compliance schedule letters, stipulations, court orders, and grant or ice conditions.
2. Affected Outfalls 4, Final
9. Identification of Conditions, Compliance Date
Agreements, Etc. number source of discharge 3. Brief Descr ption of Project a. req. b. proj.
Not applicable
a: You may attach additional sheets describing any additional water pollution (or other environmental projects which may affect your discharges) you now have under
way or which you plan. Indicate whether each program is now under way or planned, and indicate your actual or planned schedules for construction.
III. Site Drainage Map
Attach a site map showing topography (or indicating the cutline of drainage areas served by the oulfalls(s) covered in the application if a topographic map is unavailable)
depicting the facility inducl0g: each of its intake and discharge structures; the drainage area of each storm water outfall; paved areas and buildings within the drainage
area of each storm water outfall, each known past or present areas used for outdoor storage of disposal of significard materials, each existing structural controi measure
to reduce pollutants in storm water runoff, materials loading and access areas, areas where pesticides, herbicides, sail conditioners and fertilizers are applied; each of
its hazardous waste treatment, storage or disposal units (including each area not required to have a RCRA permit which is used for accumulating hazardous waste
under 40 CFR 252.34); each well where fluids from the fadlity are injected underground; springs, and other surface water bodies which received storm water discharges
from the facility.
EPA Form 3510-2F (1-92) Page 1 of 3 Continue on Page 2

r
Continued from the Front
IV. Narrative Description of Pollutant Sources
A For each outfaa, p(ovie an est"te of the area (include units) of imperious surfaces (Includurg paved areas and building roots) drained to the outfall, and an estimate of the Wtal surface area
drained by the outfa0.
Outtall
Number
Area of impervious Surface
(povide units)
Total Area Drahred
Or—J& OWN
Outfall
Number
Area of Impemlous Surface
(;-vide loofa)
Total Area Drained
(provide ants)
ocl
17,670 square feet
211,220 eq. Eect
002
24,159 square feet
24,158 sq- feet
005
15,119 square feet
43,560 sq, feet
B. Provide a narrative description of significant materials that are currently or in the past nee years have been treated, stored or disposed in a manner to allow exposure
to storm water; method of treatment storage, or disposal; past and present materials management practices employed to minimize contact by these materials with
storm water rurrafi; materials loading and access areas, and the location, manner, and frequency in which pestiddes, herbicides, soil conditioners, and fertilizers are
applied.
Attachments: A; swao1,Sw002 & SWG05
C. For each outfall, provide the location and a description of existing structural and nonstructural control measures to reduce pollutants in storm water runoR, and a
description of the treatment the storm water receives, including the schedule and type of rrairdenance for control and treatment measures and the uttimete disposal
of any solid or fluid wastes other than by discharge.
outfall List Codes from
Number Treatment Table 25-1
4-A
Sid 001 Silar Drum Whse_ Housekeeping Training / Monthly Audits by FFS
SW 002 SUar ( Fine Chem tab: Housekeeping Training ( MonthLy Audits by EEi.S
SW 005 N. Side of Silar Plant: Housekeeping Training / Monthly Audits by ESS / Relocated Drum Rinse
Station to a contained Area
. Nonstormwater Di
A I certify under penalty of law hat the outfall(s) covered by this application have been tested or evaluated for the presence of nonstnrrnwater discharges, and that all
nenstormwater discharged from these outfall(s) are i igaUriied in either W acconpqnying Form 2C or From 2E application for the otdfalt
Name and Official Title (type or
rohn Shibley / Preident
S 12�[o
B. Provide a description of the method used, the date of any testing, and the onsite drainage points that were directly observed during a test
1.Cn December 6, 2007, a visual observation was conducted on Outfalls 002, 005, and 007- During this visual observations, it
was noted that there were no additional discharges to these outfalls. (Inspection conducted with no rain present)
2.On October 21, 200a, a visual observation was conducted or. Outfalls 002, 005, and 007. During this visual observation, it was
noted that there were no additional discharges to these outfalls. (Inspection conducted with no rain present)
3.On April O1 & 02 a visual observation was conducted on outfall 007. This observation was conducted during a rainfall event. It
was noted that there was no Oucfall from this source. All runoff was retained in the small retention pond south of the
outfall.It was also observed that there was no indication of oil sheen.
I. Significant Leaks or Spills
Provide existing information regarding the history of significant leaks or spills of toxic or hazardous pollutants at the fac;Ry in the last three years, including the
approximate date and location of the spill or leak and the type and amount of material released.
o sisnificant spills or leaks occurred in the last three years
EPA Form 3510-2F (1-92) Page 2 of 3 Continue on Page 3

EPA ID Number (copy from Item 1 of Form 1)
Continued from Page 2 NCD024766719
il. Discharge Information
A, B, C, & D: See instructions before proceeding. Complete ore set of tables for each outfall. Annotate the outfall number in the space provided.
Table Vll-A, V11-6, VIl-C are included on separate sheets numbers V11-1 and VI1-2.
E. Potential discharges not covered by analysis — is any toxic pollutant listed in table 2F-2, 2F-3, or 2F4, a substance or a component of a substance which you
currently use or manufacture as an intermediate or final product or byproduct?
© Yes (fist all such pollutants below) ❑ No (go to Section N
SW 001 , SWO02 & SWO05: Chlorine, Magnesium, Chloroform, Methylene Chloride, Tetrachloroethylene, Toluene, Allyl
chloride,Diethylamine, Dimethylamine, Styrene, Triethylamine, Trimethylamine, Vinyl acetate, Xylene,
Ill. Biological Toxicity Testing Data
Do you have any knowledge or reason to believe that any biological test for acute or chronic to)ddcdy has been made on any of your discharges or on a receiving water in
relation to your discharge within the last 3 years?
❑ Yes (list all such pollutants below) ❑✓ No (go to Section DO
IX. Contract Analysis Information
Were any of the analyses reported in Item Vll performed by a contract laboratory or consulting firm?
© Yes (list the name, address, and telephone number of and pollutants
❑ No (go to Section X)
analyzed by, each such laboratory or firm below)
A. Name
S. Address
C. Area Code & Phone No.
D. Pollutants Analyzed
Oxford Labs
1316 S. 5th Street
910-763-9793
All data through 4/2007
Wilmington, NC 29401
Environmental Chemists, Inc.
6602 Windmill Way
910-392-C223
All data after 4/2007
Wilmington, NC 28405
X. Certification
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 eompletu. 1 am aware that
there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
I A. Name & Official Title B. Area
ode and
John Shbiey, Prey d nt 1(910) C251 0234Phone No. 1
D. Date Signed
S 12--1 log
EPA Form 3510-2F (1-92) Page 3 of 3

EPA ID Number (copy from Item I ofFo(m 1) Form Approved, OMB No. 2040-0086
ICao 24 76 S 719 I Approval expires 5-31.92
VII. Discharge information (Continued from page 3 of Form 2F)
Part A _ You must provide the results plat least one anahrsis for every pollutant in this table. Complete one table for each autfall. See instructions for additional details
Maximum Values
Average Values
(inefUde units)
(induYe units)
Number
Pollutant
of
Grab Sample
Grab Sample
and
Taken Durng
Taken During
Storm
CAS Number '
First 20
Flow -Weighted
First 20
Flow -Weighted
Events
(ifwaflable)
Minutes
Composite
Minutes
Composite
Sampled
Sources of Pollutants
Cal and Grease
N/A
Biological Oxygen
see arachment B
Demand BOD5)
Ghernical Oxygen
Demand (COD)
Total Suspended
Solids (TSS)
Total Nitrogen
Total Phosphorus
py
Minimum IMaximurn
I
Minimum
Maximum
fart B — List each pollutant that is limited in an effluent guideline which the facility is su4ect to or any pollutant listed in the facility's NPDES permit for its process
wastewater (if the facility is operating under an e)isbng NPDES permit). Complete one table for each outfall. See the instructions for additional details and
requirements.
Maximum Values Average Values
(rndudeunrts) (indual -AS) Number
Pollutant Grab Sample Grab Sample of
and Taken During Taken During Sty
CAS Number First 20 Flow Weighted First 20 Flow -Weighted Events
(if available) Minutes Composite Minutes Composite Sampled Sources Of Pdlutants
N/A
EPA Form 3510-2F (1-92) Page VII-1 Continue on Reverse

Continued from the Front
Part C - List each pollutant shown in Table 2F-2, 2F3, and 2F-4 that you know or have reason to believe is present See the instructions for additional details and
requirements. Complete one table for each outfall.
Maximum Values Average Values
(incline units) (inCIU69 ands) Number
Pollutant Grab Sample Grab Sample of
and Taken During Taken During Storm
CAS Number First 20 Flow -Weighted First 20 Flow -Weighted Events
(if available) Minutes Composite Knutes Composite Sampled Sources of Pollutants
See attachment C
Part D — Provide data for the storm event(s) which resulted in the maximum values for the flour weighted composite sample.
4.
5.
1.
2.
3.
Number of hours between
Maximum flow rate during
6.
Date of
Duration
Total rainfall
beginning of storm measured
rain event
Total flow from
Storm
of Storm Event
during storm event
and end of previous
(gallonsrminufe or
rain event
Event
(in minutes)
(in inches)
measurable rain event
specify units)
(gallons Cr specify units)
8/8/2006
B5 minutes
1.1 inches
106 hours
0.099 MG
0.216 MG
1 7. Provide a description of the method of Row measurement or estimate. I
The total flow during a rain event was estimated from the 'drainage area of each outfall and total precipitation.
EPA Form 3510-2F (1-92) Page VII-2

•'v
Table 2-1
Site Chronology
Wright Chemical Corp. Site - Riegelwood, NC
Date
Description
1883
Acme Manufacturing (fertilizer and sulfuric acid production) begins operation and appears on 1899 and 1910 Sanborn Fire Insurance Maps. Lead chambers
were clearly indicated. Sulfuric acid was produced by extracting sulfate from mineral pyrite and it is believed that the waste products from the process were
disposed of on site.
2159
Alum plant began operation in same vicinity as former equalization lagoon (near current MW-16 and MW-9, prior to lagoon's existence). Alum is a double
sulfate of aluminum and potassium.
2120/1959
Wright Chemicals, Inc. was formed
1967
Wright Chemical began manufacturing hexamine
1967
Kaiser Aluminum and Chemical Corporation (Kaiser) purchased the facility located on south side of the railroad tracks from Acme Fertilizer Company. Kaiser
produced superphosphate at the facility and blended fertilizers for the local farming community.
1968
Acme and Wright Chemical merged and continued to operate the chemical plant on the north side of the railroad tracks.
Mid 1960s
Wright Chemical began operation of the contact sulfuric acid plant in 1964 and began manufacturing hexamine, urea formaldehyde, and formaldehyde.
Operation of the chambers sulfuric acid plant ceased in mid-1960. Began manufacturing paraformaldehyde in 1967.
Early 197os
Alum plant ceased production. Wright Chemical constructed four unlined lagoons on site (equalization basin, outfall pond, resin pond, aeration basin, and spill
basin).
6/12/1972
Wright Chemical received a non -discharge wastewater and disposal facility permit from the NC Division of Environmental Management to operate a
wastewater treatment facility consisting of an unlined equalization basin and an unlined aeration basin
1975
Three 22 It deep monitoring wells were installed around the Kaiser run-off collection pond part of non -discharge permit. Groundwater showed pH, nitrogen,
phosphorous, and potassium problems from long history and use of fertilizer acids and compounds.
10/3/1978
Wright Chemical received approval from the NC Division of Environmental Management, Groundwater Section to begin operation of the I O-acre spray field
across SR 1818. The spray field received wastewater from the aeration basin.
9/8/1981
Kaiser was issued an NPDES permit to discharge wastewater from its onsite holding pond to Livingston Creek
6/2/1983
Kaiser was issued air permit for oil -fired boilers and burners.
1 t!ll1983
NUS Corp completed site investigation of Kaiser plant docamented to 12Y611994 report. Collected water samples from 5 wells onstte (two plant water supply
wells and three monitoring wells which surrounded a process water holding pond) and 1 private offsite well located approximately 112 mile south of plant.
1984
Kaiser ceased production and closed the fertilizer plant once the inventory was depleted. The buildings were removed from the site and the structures that
remained were concrete slab foundations and a monitoring well network.
1984
Groundwater study conducted on the former Kaiser site. Groundwater sampling revealed low-level contamination by arsenic, cadmium, copper, lead, and zinc.
Only one sample analyte (cadmium) exceeded federal health -based benchmarks.
1984
Wright Chemical installed 5 surficial observation wells on site, and subsequently installed additional wells during the NPDES permitting process, The wells
were located within the plant production areas and in spray irrigation fields to the east. The wells were monitored for pH and for several organic and non-
metallic inorganic parameters.
1984
Wright Chemical began operating the 20-ac spray field.
6/18ti984 jWright
Chemical reported a 700 gallon spill of #6 fuel oil.
Page 1 of 8

y-.
Table 2-1
Site Chronology
Wright Chemical Corp. Site - Riegelwood, NC
Date
Description
9/27/1984
Kaiser plant site recommended for No Further Action under CERCLA.
6/28/1985
Wright Chemical was issued an NPDES permit for discharge of boiler blowdown water to the outfall pond, which discharged to Livingston Creek,
10I2311985
Notice of Noncompliance to Wright Chemical for failure to submit monitoring data
1986
A Preliminary Assessment (PA) of Wright Chemical site was completed that recommended additional sampling o soil, sediment, surface water, and
groundwater.
3/1/1987
Wright Chemical was issued a revised non -discharge wastewater and disposal facility permit by the NC Division of Environmental Management for the unlined
ponds, i0-ac spray field, and 20-ac spray field that required implementation of groundwater monitoring.
3/24/1987
Notice of Violation to Kaiser for groundwater violations including pH, total dissolved solids, total organic carbon, chloride, nitrate, nitrite, fluoride, iron,
manganese, arsenic, cadmium, and lead.
1012011987
Notice of Noncompliance to Wright Chemical - Discharge of process waste into Mill Creek (8000 gallons). Spill not reported until 16 days after occurrence -
fish kill reported" Violation of Permit 2361-R "
10/22/1987
Notice of Noncompliance to Wright Chemical - Constructing outlets to surface waters (4 PVC pipe discharging boiler blowdown) and (24" bypass from
equalization pond) In Violation of NCGS 143-215.1 (a) (1) "
1987
Wright Corporation submits a Phase 2 Groundwater Investigation report. Report has a potentiometric map of the water table aquifer underlying the facility.
Groundwater elevations were collected from 10 temporary piezometers constructed on the Wright Chemical site and 4 permanent wells on the Kaiser facility.
1/21/1998
Fright Chemical repots that a three inch PVC pipe to the 20-acre spray field burst and discharged wastewater to Mill Creek
Mar-88
Atlanta Testing & Engineering completed a groundwater assessment at the Kaiser facility. Resulted in a Notice of Non-compliance issued on 5/2/88 for
groundwater violations of total dissolved solids, nitrate, chloride, fluoride, iron, and manganese,
6/2/1988
Kaiser submitted a plan to address groundwater issues at the former fertilizer plant
Feb-89
Kaiser completes cleanup of materials from, closed fertilizer plant that were potential groundwater contaminants.
3/1/1989
Permit No. 236E-R2 issued to Wright Chemical to operate a lagoon -type wastewater treatment system followed by disposal onto the 10-acre and 20-acre waste
disposal fields expired.
3/2/1989
Wright Chemical reported 2,500-3,000 pounds of sodium hydroxide spilled on 2/12/1989
Sep-89
EPA Reg IV completed a SSI at Wright Chemical. The investigation included collection of leachate, soil, sediment and groundwater samples- Samples were
tested for organic and inorganic parameters. Surface soil at the far western edge of the original sulfuric acid plant location contained elevated arsenic, lead, and
toluene. No additional sampling was conducted in the former plant area. Soil sample collected adjacent to the newer acid plant contained elevated zinc, lead,
hexachlorobenzene, and PCB-1254. Two sediment samples collected from the acid equalization pond contained elevated lead and copper concentrations:
Nickel and vanadium were elevated in one sample, and the other sample contained DDT and methoxychlor. Sediment collected from the banks of Livingston
Creek contained numerous elevated inorganics including copper and lead and several pesticides. Groundwater in a monitoring well downgradiem from the
equalization pond contained elevated concentrations of arsenic, lead, nickel and vanadium. Based on the SS results, the site was recommended for further
federal investigation. However it was subsequently referred to the State Inactive Hazardous Sites Program and archived under CERCLA on September 9, 1989.
I211/I989
J5000 gallons of wastewater was discharged to Livingston Creek as a result of a fire that occurred on 1 1/25189
Page 2 of 8

Table 2-1
Site Chronology
Wright Chemical Corp. Site - Riegelwood, NC
Date
Description
12/6-8/1989
Sulfuric acid spill, 2,200 gallons of 93% sulfuric acid were spilled on the railroad spur adjacent to the sulfuric acid plant, on the southern property boundary of
the Wright Corporation facility. The spill area was estimated at 300 feet long by 25 feet wide. 20 tons of agricultural time was applied to the surface of the spill
area and mixed into the sail and gravel. 121711989 - 10 additional tons of lime were applied to hot spots" to neutralize any acid remaining on the surface ofthe
ground. On 12/811989 rain impeded the clean-up operations. Surface water generated from the rainfall inundated the containment area flushing the surface of
the site and discharging into Livingston Creek. Spill resulted in acidic tun -off to Livingston Creek for several days. Elevated lead and arsenic levels were
identified in un-permitted surface water discharges to Livingston Creek observed at the time by DENR.
12/1 111989
Five unpermitted discharges to Livingston Creek were observed and documented during a compliance inspection at Wright Chemical. Samples from 4 of the
discharges were collected and analyzed. The samples were reported to contain elevated amounts of nutrients and heavy metals. Led to 111-911990 NOV.
12/2811989
Wright Chemical submits a report prepared by Dr. Rolf Hartung, a consultant in environmental toxicology from University of Michigan. Titled A
Reconnaissance Survey of Mill Creek and Environs" concluding that the site was not adversely impacting Mill Creek.
198911990
Sulfuric acid spills were common along the railroad tracks and in the area of the sulfuric acid plant. The most significant sulfuric acid spills along the railroad
track area were Wright in 1989 and Koch in 1990.
1990
The contact sulfuric acid plant was sold to Koch Sulfur.
1/5/1990 &
Groundwater NOV, contamination sources cited: 2 acid spills, wastewater lagoons, 10 acre waste disposal field, 20 acre waste disposal field. 19 violations of
2/2190
2L" Groundwater standards violations.
2/13/1990
State of North Carolina completed sampling for toxicity tests of unpermitted discharges on the Wright property and Livingston Creek
2114.11990
State of North Carolina completed domestic well sampling in the vicinity of the Wright Chemical site.
207/1990
AWARE Environmental submitted a corrective action plan for unpermitted discharge violations for Wright Corporation
3/12/1990
Kaiser signed a Special Order of Consent (SOC) for groundwater violations at the former fertilizer plant,
3/14/1990
Kaiser submitted an environmental study of Livingston Creek to the Wilmington Regional Office by Dr. Rolf Hartung, a consultant in environmental
toxicology from University of Michigan. Tided "An Analysis of Environmental Impacts on Livingston Creek and Adjacent Wetlands Associated with Kaiser
Aluminum & Chemical Corporation's Retired Fertilizer Plant."
Apr-90
AWARE Environmental submitted a remedial action pian for 10-ac spray field on behalf of Wright Corporation. Four additional water table monitoring wells
were installed downgradient of the spray field.
Jun-90
AWARE Environmental submitted a remedial action plan for 12/6189 sulfuric acid spill on behalf of Wright Corporation.
7/17/1990
381 gallon formaldehyde spill occurred (solution 37% formaldehyde, 62% water, and 1 % methanol). Regulatory notification was not made until 7/31190. The
spill was the result of overfilling a 5,000+ gallon tanker. A portion of the spill entered the storm sewer leading toward the lined pond (waste treatment area).
The remaining material flowed into a graveled area, down an asphalt road onto a gravel road and into graveled depression. An undetermined amount of the
product entered a "French Drain" leading to a ditch which discharged into Livingston Creek. Excavated material was placed onto the ground adjacent to the
aeration pond on the plant site.
8/1/1990 1600gallons
of 3%ammonium hydroxide were applied to the 7117/90 formaldehyde spill, Wright was issued an NOV for this on 8113/1990.
Page 3 of 8

Table 2-1
Site Chronology
Wright Chemical Corp. Site - Riegelwood, NC
Date
Description
811611990
DEM completed an assessment of the 7/17l90 formaldehyde spill on Livingston Creek. A benthic macroinverterbrate survey of Livingston Creek was
performed to determine any impacts to the stream fauna from the spill. It appeared that Wright Chemical was having a noticeable impact on the fauna of
Livingston Creek. The stream fauna changed from a typical swamp stream dominated by amphipods, midges and beetles upstream of the plant, to a much more
stressed ecosystem dominated by pollution tolerant oligochaetes downstream.
after 1991
Wright Chemical constructed Silar Laboratories, a subsidiary which manufactured silanes to the northeast of the sulfuric acid plants.
1 /l/ 1991
Koch Sulfur spilled 1500-2000 gallons of sulfuric acid at the railcar loading area. The spill was neutralized using soda ash. The pH in M W-16 was raised by
pumping water from the well, mixing it with soda ash, and applying the mixture to the ground around the well.
211 YI991
Koch Sulfur documented a DIDP oil spill at the Wright Chemical hexamine plant that occurred along the railroad tracks near the sulfur line.
7/22/1991
Wastewater Treatment Ponds Closure -Revision One closure plan (for abandoning the four existing unlined lagoons) was submitted by Wright Chemical_ The
closure plan consisted of three "phases" that required dewatering of the unlined lagoonswith the wastewater ultimately placed in the existing lined lagoon and
construction of the new lined lagoon (Kelly pond).
9191
Koch Sulfur ceased operation of the contact sulfuric acid plant. This was the end of sulfuric acid production at the site.
May-92
Petroleum contaminated soil was discovered near former fuel oil tanks on Kaiser property during installation of MW-4. The source was an oil -water separator
that formerly received drainage from the containment areas of the fuel oil tanks. Contaminated soil was excavated and removed in June 1992.
611711992
A release of approx. 2,500 gallons of acetone was discovered. The release contaminated the sail to the southwest of a contained aboveground storage tank. The
aboveground acetone storage tank has a capacity of 10,000 gallons and is located northwest of the formaldehyde plant and just south of the methanol storage
tanks. Cleanup of the release resulted in 1500 pounds of acetone product collected in drums and contaminated soils were removed to the water table,
approximately 5 feet below grade, and placed in plastic lined steel roll off containers.
7/ 10/1992
Wright Chemical submitted a corrective action plan tor the acetone spill consisting ol installing a recovery system toir a spring discharging acetone, installation
of one monitoring well, and groundwater monitoring of the new well and spring. NC DEM approved the plan on SM93.
7/14/1992
wser- orner prepared and submitted on behalf of aiser a proposal or p ytoreme cation ot groundwater contamination at the former Kaiser p ant using
cottonwood trees to remove excess nutrients.
1992
Use of the unlined equalization basin was phased out. The basin was located between existing wells MW-16 and MW-9 and was used to store wastewater from
the production of hexamine and sulfuric acid.
3/16/1993
138 tons of acetone contaminated soil from the acetone spill was sent offsite to a landfill
5/4/1993
Kaiser received a permit to land -farm 350 cubic yards of petroleum contaminated soil excavated from near MW-4 on 2.61 acres of the former fertilizer plant
property.
8/26/1993
Process wastewater spill
9/7/1993
Approximately 100 gallons of 50% formaldehyde solution was spilled while transferring from a tote into a tank. The hose used to transfer the formaldehyde
solution ruptured and formaldehyde spilled into the containment area around the tank and into the dirt and rocks adjacent to the containment area and the
railroad tracks. Estimated that 75% of the 100 gallons was spilled outside of containment. Soil and rocks contaminated with formaldehyde were removed from
spill site to the on -site aeration basin. Area where spill occurred had natural underground springs with water percolating up out of the soil. Water contaminated
with formaldehyde was pumped from spill site to the wastewater collection system.
Page 4 of 8

Table 2-1
Site Chronology
Wright Chemical Corp. Site - Riegelwood, NC
Date
Description
1994
Under the direction of the North Carolina Department of Environment and Natural Resources (NCDENR), Division of Water Quality, Groundwater Section,
four unlined lagoons were closed. After the lagoons were drained, all of the sludge and contaminated soils were removed and placed into a lined monofilI north
of the maintenance building. This project was completed in 1995.
2/18/1994
A paraformaldehyde spill occurred at Wright Chemical due to a broken seal on a gasket. Approx 5,600 pounds was released. Due to cool temperatures, most of
the paraformaldehyde solidified and was scooped up. The remaining was excavated with surface soil.
7/21/1994
Black & Veatch performed a site reassessment of the Kaiser fertilizer plant that found no CERCLA eligible contamination on the property based on historical
information review.
] 1/9/1994
A hexamine spill was reported by a citizen complaint that was running downhill and soaking into ground at the bottom, middle of plant. Approx 50 gallons
based on telephone conversation log. Wright Chemical responded in an 11/1 1/1994 letter it was cooling tower water from cooling tower misting.
1/4/1995
SOC amendment for close-out of the remaining un-lined pond. Wright requested permission to construct a 3rd lined lagoon (Kelly pond),
4/10/1995
SOC P 90-29ADIwas signed for unlined pond elimination project, stormwater issues, and Tor Jormalclehy0e, nitrate, nttnte, TDS, Chromium, iron, manganese,
and sulfate in the groundwater exceeding state standards. Sources of contamination cited were the 12/6189 sulfuric acid spill, 7/31/90 formaldehyde spill,
wastewater lagoons, 10 acre waste disposal field, and 20 acre waste disposal field.
8/1011995
While disp5sing ot a 1000 L tank, 20 gallons at wK erm (acoolant material used in process that contains _ o ip eny was released. ecte Soils
excavated and stored in empty, lined ponds.
6/23/1996
Spill of --550 gallons dichloropropene due to storage tank overfill. Spill overflowed onto gravel covered area behind Dowicil production facility. 7/22196
DENR requested a monitor well installed by 9/3196 for additional sampling of dichloropropene soil area.
10/17/1996
DWQ Groundwater Section issued an NOV to Wright for violations of 8129l96 samples from MW-6, MW-9, MW-16, and Dowicil well. MW-6 and MW-9
(TDS, SO4, Total ammonia, TKN as N, Fe). M W-16 (TDS, SO4, Total Ammonia, TKN as N, Nitrates). Dowicil well (cis-1-3-Dichloropropene, trans-1-3-
Dichloropropene)
1/24/1997
1 3-dichloropropene in compliance with interim standards and removed from groundwater NOV
Mar-97
Livingston Creek surface water samples were collected to determine surface water quality. Three samples were collected in the area of Wright Chemical and 4
were collected downstream of the site prior to Livingston Creek joining the Cape Fear River. Sample analyses included general water quality parameters and
did not include metals or organic chemical analyses.
Page 5 of 8

Table 2-1
Site Chronology
Wright Chemical Corp. Site - Riegelwood, NC
Date
Description
May-97
A Groundwater Assessment (CSA) was completed for Wright Corporation by Triangle Environmental Inc. Two shaliow groundwater monitoring wells (MW-
27 and MW-28) were installed at the Wright property on 311911997. TDS was present in concentrations ranging from 138 mg/L to 23,500 mg/L. TDS plume
appeared to be centered on the Wright facility. Sulfate was present in the samples at concentrations ranging from less than detection to 17,100 mg1L. Sulfate
plume appeared to be present in the western portion of the site and extends from the railroad tracks northward to MW-9. The source of the sulfate plume had a
number of contributors including past spills along the rr tracks, the former sulfuric acid plant, the former alum plant, the former chambers plant, and seepage
from the former unlined lagoons. Ammonia was present from 103 to 2,000 mg/L. The ammonia plume was centered in the western portion of the facility
associated with M W -7, M W-8, MW-9 and MW-ACE. The source of the ammonia plume had a number of contributors including the production of fertilizer on
the Kaiser property and the former unlined lagoons on the Wright property. Nitrate was present from less than detection to 311 mg/L. The nitrate plume
appeared to be associated with the site of the former fertilizer manufacturing building located on the Kaiser property_ iron was present from less than detection
to 1,500 mg/L. The iron plume appeared to be present in the western portion of the site extending from the tracks northward to MW-9. The source of the iron
plume was likely to be the former chambers plant. Analysis of 1 I surface water samples from Livingston Creek did not identify any target contaminants above
surface water quality standards.
6/16/1997
W RO-DWQ reviews CSA and responds via letter to Wright Corporation that the DWQ is in basic agreement with the subject assessment report and the
contamination appears to be delineated vertically and horizontally. The division requested additional parameters be added to their non -discharge permit
WO003361 surface water sampling program. The additional parameters were TDS, pH, ammonia, and iron.
9/5/1997
Wright submitted a corrective action plan (CAP) for sitewide groundwater by Sherrill Consulting. The principal groundwater contaminants at the site were total
dissolved solids {TDS), sulfate, ammonia, nitrate, and iron. The CAP proposed natural attenuation.
Oct-97
A fire occurred at the Fine Chemicals laboratory. Wright Chemical collected and submitted a soil sample plus upstream and downstream samples from
Livingston Creek indicating no impact from the fire.
1 1/1511997
Tar or jelly like material released when a disk ruptured at dryer reactor plant
Nov -Dec
Three separate releases of Dowicil reported at the Dowicil facility
1997
1 /2611998
The natural attenuation CAP for sitewide groundwater was approved (TDS, pH, sulfate, nitrate, iron, ammonia & TOC)
7/12/1999
Wright Chemical was issued a Title V air permit.
811011999
Rupture of a wastewater transfer line coupling causing elevated levels of ammonia in MW-26 (near Kelly Pond Area)
2/4/2000
Wright Chemical was issued a renewed NPDES stormwater permit for discharge to Livingston Creek.
3/22/2000
NOV due to MW-9 sampling results contained within 10199 groundwater monitoring report
8/10/2000
Release from Wastewater Tank No.3 at the silane plant led to CAP (8/13/01) and CAP addendum (3126102) (TDS, tetrahydrofuran, 3&4-methylphenol,
ammonia, & TOC) also proposing natural attenuation.
2002
Methanol release from a buned pipe leak was discovered (piping replaced).
10/13/2003
W right Chemical issued a revised NPDES stormwater permit
7004
Clam/fish tissues collected from Livingston Creek showed concentrations greater than recommended concentration ranges (lead, arsenic, cadmium, mercury,
dieldrin, Gamma -chlordane)
Page 6 of 8

Table 2-1
Site Chronology
Wright Chemical Corp. Site - Riegelwood. NC
Date
Description
10/14/2004
Oak Bark Corporation was formed in North Carolina.
1 1/30/2004
Wright Chemical sold most of its assets to two officers of the company and four Wright Chemical Corporation shareholders. The new corporation began
operating as the Oak -Bark Corporation, but doing business as (dba) the Wright Corporation. Oak Bark Corporation purchased 740 acres from Wright Chemical
including the site area.
5/4/2005
Wright Chemical signed a SOC requiring correction of NPDES effluent violations.
6/1/2005
Site reassessment (SRR) recommended further action under CERCLA and the Wright Chemical Corp. site was removed from archived status.
1119C_>006
OBC received an NOV from EPA for Toxic Substances Control Act (TSCA) violations
7/17l2006
OBC was issued an Industrial User Permit to discharge wastewater to the Columbus County POTW (located on the former Kaiser fertilizer plant property)
1 113012006
Oak Bark Corp sold a portion of the site to Hexion Specialty Chemicals, Inc. Hexion purchased the Wright Corporation name and the portion of the Acme
facility that manufactures hexamine, formaldehyde and special project (ketones, formaldehyde, water treatment polymers and resins). OBC continued with their
production of silane-based products, animal feeds, specialty chemicals, and pharmaceuticals. As part of the Hexion sales agreement, OBC remained responsible
for historical environmental conditions and maintaining its reporting requirements of permits and Corrective Action Plans.
4/ 1012007
surface SoH samples o . feel gs collected y in Ille area of the lormer sulfuric acict production on the -acre proposed NPL. One
background sample was collected from nearby soils outside of the area of contamination. All 4 soils were analyzed for 22 metals, cyanide, and 21 pesticides or
pesticide degradation products. Contaminants of concern were arsenic, cadmium, copper, lead, and zinc
4/10/2007
10 sediment samples (5 background) samples taken by DENR. Only sediments immediately adjacent to the 80-acre area of contaminated soils were evaluated
for potential health effects, It was anticipated that persons would come into contact with sediments in this area while accessing the site from a boat. One
sediment sample was collected in duplicate at this location by DENR in 2007. This location was identified as the `release" area from the site into the wetlands.
The sediment was analyzed for 22 metals, cyanide, and 21 pesticides or pesticide degradation products.
5/4/2007
Name change from Wright Corporation to Oak -Bark Corporation for Permit No. WQ0005699 for the continued operation of the residuals surface disposal
facility (monofill). One 1.14-acre surface disposal unit with a total net capacity of 18,000 cubic yards; a 36-mil Hypalon 9210 bottom liner, a leachate
collection system to collect and convey leachate to use/disposal; a stormwater cover. as well as all associated piping, valves, electrical and
instrumentationtcontrol systems. and other appurtenances necessary to make a complete and functional surface disposal unit for the disposal of residuals from
the residuals source -generating facilities on an as -needed basis. The leachate collection system is operable. Water is ponded on the cover but not leaking.
OBC drained off 1700 gallons earlier in 2014. 1t was last drained in about 2006.
7115_
KCRA NaMphng investigation Keporl of Hexton pecialty Chemicals, Inc. bv EPA Region IV, report issued lWiQ121JUS.or the RCRA sampling
7/16/2008
investigation, SESD collected a total of six waste samples (HA103—HA108), The regulatory levels for the Toxicity Characteristic (TC) constituents were not
exceeded for any of the samples. Vanadium was detected in all of the samples with concentrations ranging from 1.4 mglkg to 80 mglkg. The liquid sample
collected from the open drums of vanadium pentoxide contained 69 mglkg of vanadium.
7115-
RCRA Sampling Investigation Report of Oak Bark Corp. by EPA Region IV, report issued I 1 f30/2008, For the RCRA sampling investigation, SESD collected
7/161200g
a total of two waste samples (OB101 & OB102). The regulatory levels for the Toxicity Characteristic (TC) constituents were not exceeded for any of the
samples.
3/6/2009
PermIt NO. WQ0QVJJb I given toOak-Bark Corporation for the operation o t e Kelly ponds as a closed -loop wastewater recycle act tty. his permit was
being modified to reflect the change of permit type from groundwater rernediation to closed -loop recycle system.
Page 7 of 8

Table 2-1
Site Chronology
Wright Chemical Corp. Site - Riegelwood, NC
Date
Description
4/18/2009
OBC sold their silanes-based products business to MPD Holdings, Inc. On the date of the sale, MPD simultaneously put OBC's Acme silane operations into a
new corporation named Sitar, LLC. OBC owned 5% of the new Sitar, LLC corporation. Sitar, LLC leased approximately 10 acres of real estate from OBC for
its Acme operations. 11 intended to purchase that real estate later that year. OBC was responsible for all past environmental conditions,
121912009
The Secretary for the NCDENR submitted a letter to the EPA Region 4 Administrator Stating that the, State of North Carolina agreed that the Site poses a
significant threat to the public health and the environment and indicated State support of EPA's efforts to propose the Site for inclusion on the NPL. NCDENR
did not contact OBC of its decision.
3/4/2010
The EPA proposed the Wright Chemical Corporation Riegelwood, NC site to the NPL list
Feb-10
EPA released the Community Information Update fact sheet
Mar-10Documentation
Record completed.
Feb -I 1
Drat Public Health Assessment prepared by NC Division of Public Health
Mar -I I
Wright Chemical Corporation was added to the NPL based on an evaluation under the Hazard Ranking System (HRS) in a final rule published in the Federal
Register. HRS score of 48.03 due to only surface water overland environmental threat. Grotwdwaler, soil, and air pathways were not scored.
Noie - Includes revisions from OBC. October 2014.
Page 8 of 8

Table 2-2
Description of Chemical Processes
Wright Chemical Corp. Site - Rie>?elwood, NC
Approx.
RawMaterial and
Process
Time Period
Location
Finished Product
Process Description
Potential Contaminants
on Site
Feedstock
Former Acme/Wright Cheanicai Plant (north of railroad tracks)
Sulfuric Acid
1880s-1960s
West end of
Pyrite, air, water
Sulfuric acid (35 -
Pyrite are (iron disulfide) is
Sulfate, lead, iron, depressed pH,
Production (Lead
property along
80% concentrated)
heated in air to high temperatures
other metals (from impurities in
Chamber Method)
tracks
to extract sulfur and form sulfur
pyrite - arsenic, selenium, nickel,
dioxide. Sulfur dioxide is passed
cobalt, and others, also increased
through water in lead -lined
dissolution of metals in
chambers or towers (Glover
groundwater from low pH)
towers) to produce sulfuric acid.
Sulfuric Acid
1964-1991
Along tracks; just
Sulfur, air, vanadium
Sulfuric acid (up to
Sulfur is heated in air to form
Sulfate, lead, vanadium, depressed
Production (Contact
west of current
pentoxide, sulfuric acid,
98% concentrated)
sulfur dioxide. Sulfur dioxide is
pH, other metals (increased
Method)
hexamine plant
water
mixed with air in the presence of
dissolution of metals in
vanadium pentoxide (catalyst) to
groundwater from low pH)
create sulfur trioxide. Sulfur
trioxide is dissolved in sulfuric
acid to form oeum (fuming
sulfuric acid). Oleum is mixed
with water to form concentrated
sulfuric acid.
Alum Production
1959-1970s
Along tracks;
Bauxite (aluminum ore),
Aluminum
Alumina (aluminum oxide) is
Aluminum, sulfate, potassium,
between former
sulfuric acid, potassium
potassium sulfate
leached from bauxite using
depressed pH, other metals (from
chamber and
sulfate
(potash alum)
sulfuric acid. The leachate is then
impurities in bauxite and increased
contact acid plants
reacted with potassium sulfate to
dissolution of metals in
form aluminum potassium
groundwater from low pH)
Formaldehyde
1967-present
Central pan of
Methanol, air, metal or
Formaldehyde (gas
Methanol is mixed with air and
Methanol, metals (silver, iron,
Production
property, north of
metal oxide catalyst
or 37% aqueous
the methanol rich mixture is
chromium, cobalt, copper,
current hexamine
solution)
passed through a metal or metal
molybdenum, vanadium) ,
plant
oxide catalyst at high
formaldehyde
temperature. Formaldehyde and
water vapor are produced.
Page] of 4

Table 2-2
Description of Chemical Processes
Wriebt Chemical Cora. Site - Rie2elwood, NC
Approx.
Raw Material and
Process
Time Period
Location
Feedstock
Finished Product
Process Description
Potential Contaminants
on Site
Hexamine
l 967-present
Along tracks; east
Formaldehyde (50%
Hexamine
Formaldehyde and ammonia are
Formaldehyde, ammonia,
Hexamethyl-
of former acid
aqueous solution),
mixed in aqueous solution to
hexamine, methanol, dimethylether,
netetramine)
plants
anhydrous ammonia,
form hexamine dissolved in
formic acid, DIDP
Production
diisodecyl phthalate
water. The water is distilled off
(DIDP)
to leave solid hexamine crystals.
DIDP can be added to reduce
dusting of final product.
Aqua Ammonia
1950s-present
Along tracks; cast
Hexamine, sulfuric acid,
Aqua Ammonia
Hexamine waste is removed from
Hexamine, ammonia, sulfate,
Ammonium
of former acid
anhydrous ammonia
the hexamine plant deionizing
depressed pH
Hydroxide)
plants
units using sulfuric acid, and
Production
mixed with anhydrous ammonia-
Paraformaldehyde
1997-2007
Current dry
Formaldehyde (50%
Paraformal-dehyde
50% formaldehyde solution is
Formaldehyde, bromide, bromine,
Production
(off & on)
products area
solution), hvdrobromic
dried in a rotary vacuum dryer,
depressed pH
(former contact
acid
then treated with hydrobromic .
acid plant)
acid and finely ground.
Aniline
2001-2002
Special projects
Formaldehyde (37%
Aniline
37% formaldehyde solution and
Formaldehyde, aniline
Formaldehyde
solution), aniline
Formaldehyde
aniline are mixed in a reactor.
Ketone Aldehyde
1991-201 l
Special projects
Acetone, urea
Ketone Aldehyde
Acetone, urea, and formaldehyde
Acetone, urea, formaldehyde,
Resin Production
(carbamide),
are mixed. Sodium hydroxide is
ammonia, chloride, sodium,
formaldehvde, ammonia
used to adjust the pH, and
elevated pH
chloride, sodium
ammonia chloride is used as a
hydroxide
formaldehyde scavenger.
DS-2 (military
1982-1985
Special projects
Diethylenetriamme,
DS-2
Diethylenetriamine, Ethylene
Diethylenetriamine, ethylene
decontamination
ethylene glycol, ethylene
glycol monomethyl ether, sodium
glycol, ethylene glycol monomethv
compound)
glycol monometh 1
h droxide
ether, sodium, elevated pH
routw-right
1998-2008
Special projects
Acrylamide,
Groutwright
Acrylamide and formaldehvde is
Acrylamide, formaldehyde
Production
formaldehyde
mixed in a reactor.
owicil (Quaternium
1996-1999
Current dry
1-(3-chloroallyl)-3,5,7-
Dowicil
Proprietary
1-(3-chloroallyl)-3,5,7-triaza-I-
r Qua:) Production
products area
triaza-l-
(Quatemium)
azomaadamantane chloride
(former contact
azoniaadamantane
(CTAC),hexamine, 1,3-
acid plant)
chloride, hexamine, 1,3-
dichlompropene, methylene
dichloropropene,
chloride, sodium bicarbonate
methylene chloride,
sodium bicarbonate
Page 2 of 4

Table 2-2
Description of Chemical Processes
Wright Chemical Corp. Site - Riegelwood, NC
Approx.
Raw Material and
Process
Time Period
Location
Finished Product
Process Description
Potential Contaminants
on Site
Feedstock
Vanadium Oxalate
2006-2008
Special projects
Oxalic acid, vanadium
Vanadium oxalate
Unknown
Vanadium, depressed pH
Production
pentoxide
Chloropicrin
1988-1991
Northern pan of
Nitromethane and
Chloropicrin
Unknown
Chloropicrin, sodium, chloride,
Production
property at
sodium hypochlorite
nitrates, elevated pH
current silane
Sodium Metabisulfite
1993 2007
Special projects
Sulfur, sodium
Sodium
Sulfur is heated in air to form
Sulfate, sodium, elevated pH
hydroxide
metabisulfite
sulfur dioxide. Sulfur dioxide is
then bubbled through sodium
hydroxide solution to form
sodium bisulfate and water. The
water is distilled off to leave
solid sodium metabisulf-ite.
Urea -Formaldehyde
[967-1973
Special projects
Urea (carbamide),
Urea -formaldehyde
Urea and formaldehyde are
Urea, formaldehyde, ammonia,
UF) Resins
formaldehvde, ammonia,
reacted under mild heat in the
pyridine, elevated pH
Production
pyridine
presence of a base (ammonia or
pyridine)
Silanes(siloxanes
1992-present
Northern pan of
Silicon, hydrogen
Silanes (silane,
Silanes are formed by the
Aluminum, copper, silanes,
Production
property
chloride, aluminum
disiloxane,
reaction of silicon with hydrogen
siloxanes, chloride, hexane,
chloride (catalyst),
chlorosilanes),
chloride in the presence of a
toluene, benzaldehyde,
copper (catalyst), hexane
siloxanes
catalyst. Catalyst is aluminum
triethylamine (TEA), allyl amine
(solvent), toluene
chloride for silane and copper for
(solvent), bervaldehyde,
disiloxane and organosiianes.
triethylamine (TEA),
Siloxanes are formed by
allyl amine
hydrotvsis of silanes.
Cellulose Solutions
2004-2005
Special projects
Cellulose, sodium
Cellulose solutions
Unknown
Cellulose, sodium, methylene
hydroxide, methy[ene
(methyl cellulose,
chloride, chloroacetic acid,
chloride, chloroacetic
carboxymethyl
propylene oxide
acid, propylene oxide
cellulose,
hydroxypropyl
cellulose)
Page 3 of 4

Table 2-2
Description of Chemical Processes
Wright Chemical Corp. Site - Rieselwood, NC
Approx.
Ram Material and
Process
Time Period
Location
Finished Product
Process Description
Potential Contaminants
Feedstock
on Site
rganosulfur
1990s-2009
Fine Chemical
tartly
Lab
Quantities
Made
Products Production
Lab
Former
Acme/Kaiser Fertilizer
Plant (soath of railroad
tracks)
Normal
1880s-1983
North -central part
Phosphorite (phosphate
Super -phosphate
Phosphate rock is finely ground
Phosphate, sulfate, fluoride,
Superphosphate
of property along
rock) and sulfuric acid
(powdered) and reacted with
carbonate, depressed pH, metals
Production
tracks
sulfuric acid to form
(from impurities in phosphorite and
superphosphate.
increased dissolution to
groundwater due to low pH),
radionuclides
ranular Fertilizer
1880s-1983
North -central part
Muriate of potash
Granular fertilizer
Potassium chloride, super-
Potassium, chloride, phosphorous,
Production
of property along
(potassium chloride),
phosphate, and ammonium
phosphate, ammonia, nitrate,
tracks
superphosphate,
nitrate were mixed with
carbonate, metals.
ammonium nitrate,
anhydrous ammonia to improve
anhydrous ammonia,
their nitrogen content_ Trace
lime, dolomite, sulfur,
metals including calcium (from
iron, copper,
lime), magnesium (from
molybdenum, other trace
dolomite), and others were added
metals
as needed to develop a specific
Note - Includes revisions from OBC. October 2014.
Page 4 of 4

Table 2-3
Documented Historical Releases
Wright Chemical Corp. Site - Riegelwood, NC
Map ID' Location Date I Description
Former ArindMOM Chemical' Plant north of Mroad tracks
1
Fuel oil storage area
6118I1984
Spilled 700 2allons of #6 fuel oil inside containment area.
2
Former contact sulfuric and
1987 - 1990
Multiple spills of concentrated sulfuric acid and liquid sulfur documented on Wright Chemical internal spill
plant. Exact locations of spills
reports.
unknown.
3
20-acre spray field[Mill Creek
9/21/1987
Line to 20-acre spray field ruptured and discharged wastewater to MITI Creek at a rate estimated by
Wright Chemical to be approx. 200_gpm for 40 min. Caused fish kill that was discovered on 10/1187
4
20-acre spray field/Mill Creek
1/1911988
Line to 20-acre spray field froze and ruptured. Wastewater in the piping drained to Mill Creek. Amount
spilled was not documented.
NIA
Location unknown
1 IM1988
Spilled 1 000 - 1,500 gallons of wastewater. Location and details unknown.
5
Former sulfuric acid railcar
12/611989
Spilled 2,200 gallons of 93% sulfuric acid at the former sulfuric acid railcar loading area. Spill area was
loading area
approx. 300 feet long by 25 feet wide. Wright Chemical applied lime to neutralize the spill. The spill
impacted pH in Livingston Creek for approx. 5 days. One monitoring well (MW-16) was installed at the
ill location. A remedial action plan proposing groundwater monitoring was submitted.
NIA
Location unknown
3/2/1989
Spilled 2,500 - 3,000 pounds sodium hydroxide. Location and details unknown.
NIA
Location unknown
11125/1989
Spilled 5,000 gallons wastewater as a result of a fire. Location and details unknown.
6
Formaldehyde plant tanker truck
8/1311990
Spilled 380 gallons of 37% formaldehyde solution by overfilling a tanker truck. Wright Chemical applied
loading area
approx. 600 gallons ammonium hydroxide to the spill to neutralize the formaldehyde to hexamine, then
applied water, The release traveled east through a french drain and discharged into a ditch leading to Mill
Creek. impacted soils were excavated. Sampling by DENR indicated that formaldehyde remained in the
soil after the excavation, and that formaldehyde impacted Mill and Livingston Creeks. Wright Chemical
disputed the DENR results contending that the laboratory's use of acid in the analyses converted
hexamine to formaldehyde.
7
Hexamine plantfformer contact
1I3111991
Spill of diisodecyl phthalate (DIDP) ail from the hexamine plant was discovered at the sulfuric acid plant.
sulfuric acid plant
The oil escaped the DIDP containment area, flowed through gravel along the railroad grade, and pooled
in an area approximately 40-50 feet long by 10-15 feet wide new a french drain along the sulfur track.
8
Former sulfuric acid railcar
1/111991
Spilled 1,500 to 2,000 gallons of 99% sulfuric acid by overfilling a rail car. Koch Sulfur applied soda ash
loading area
to neutralize the spill. Over the period of 1/1 - 416191, Koch Sulfur attempted to raise the groundwater pH
in MW-16 by pumping the well, adding soda ash to the water, and applying the soda ashlwater mixture to
the ground around the well.
9
Acetone AST
6/1811992
Approx. 2,500 gallons of acetone spilled from the acetone AST due to a broken sight glass and an open
containment drain valve. Wright Chemical recovered standing puddles of acetone and excavated
impacted soil to the water table. The spill dissolved two PVC cooling tower lines resulting in a release of
hexamine wastewater on 6121/92. Acetone contaminated groundwater discharged from a spring located
west of the spill. Wright Chemical installed one monitoring well at the release site (MW-ACE) and
installed a collection system at the location of the contaminated spring under a state -approved corrective
action plan.
Page 1 of 3

Table 2-3
Documented Historical Releases
Wright Chemical Corp. Site - Riegelwood, NC
Map ID'
Location
Date
Description
11
Paraformaldehyde production
9/7/1993
Spilled 100 gallons of 50% formaldehyde solution. Wright Chemical estimated that 75 gallons of the spill
area
was outside the containment area on gravel railroad bed. Plant personnel used water to wash down the
spill. Contaminated gravel and soil was excavated and put in the on -site aeration basin. Impacted
groundwater seeping from springs was recovered and sent to through the wastewater treatment system.
12
Hexamine plant cooling tower #4
1119/1994
Anonymous complaint reported a hexamine spill at Wright Chemical. The spill was actually cooling tower
water released from cooling tower #4 than ran from the hexamine plant toward the formaldehyde plant.
The cooling water Contained ammonia, formaldehyde, hexamine, and methanol. The released was
contained and absorbed with soil.
13
Formaldehyde plant absorber
2/16/1994
Spilled 1,127 gallons of 52% formaldehyde solution. The solution solidified and it was cleaned up as a
column
solid. The area was treated with ammonium hydroxide to neutralize the formaldehyde to hexamine.
Wright Chemical estimated that 99% of the release was recovered.
14
Kelly Pond #3
71611995
Overflow of approx. 200 gallons of wastewater from Kelly Pond #3. Contaminated soil still in place.
Lagoon was sandbagged for short term and Wright Chemical improved edges of holding pond to provide
mare depth.
15
Formaldehyde plant. Exact
8/10/1995
Spilled approx. 20 gallons of Dowtherm coolant while removing an old tank. Impacted seits were
location unknown.
excavated by Win ht Chemical and stored on -site in an empty lined impoundment.
16
Kelly Pond #2
3/11/1996
Kelly Pond #2 liner floated up due to a rip or seam failure. Unknown amount of wastewater was released.
Maintenance pumped water underneath liner back on top of the liner in order to push liner back into
lace. Wright Corporation installed a new liner.
17
Kelly Pond #3
5/1/1996
Overflow of approx. 300400 gallons of rainwaterlwastewater mix from Kelly Pond #3. Occurred while
Kelly Pond #2 was being emptied for new liner installation
I
Former Dowicil plant at
6/2311996
Spilled approx. 550 gallons of dichloropropene (DCP) due to overfilling the tank. The spill was cleaned
dichloropropene storage tank,
up using absorbent material and contaminated soil was excavated and hauled off site. One temporary
Exact location unknown.
monitoring ("Dowicil well") well was installed and sampled. cis-1,3-DCP and trans-1,3-DCP were
detected in the well.
NIA
Location unknown
Aril 1997
Spilled hexamine to duck pond. Location and details are unknown.
19
Farmer Dowicil plant. Exact
11/1511997
Unreported amount of Dowicil was spilled when a rupture sprayed the material on the Dowicil building
location unknown.
roof, the side of the hexamine warehouse, and the surrounding ground. Material was wiped down and
impacted soil excavated.
20
Former DowidI plant. Exact
121811997
Spilled approx. 150 gallons of Dowicil on building roof and small area of soil. Impacted soil was
location unknown.
excavated.
21
Kelly Ponds
8/1011999
Spilled wastewater due to a ruptured transfer line cou piing.
22
Si lane plant wastewater tank #3
8/10/2000
A leak of wastewater was detected on the north side of the tank's containment. Silar cleaned and
repaired the tank. A site assessment was completing including installation of one permanent (MW-29)
and three temporary wells. A correction action plan proposing natural attenuation was prepared and
submitted.
NIA
Location unknown
March 2002
Spilled acetone. Location and details unknown.
Page 2 of 3

Table 2-3
Documented Historical Releases
Wright Chemical Corp. Site - Riegelwood, NC
Map ID'
Location
Date
Description
23
South of methanol and acetone
ASTs
Nov. 2002
A leaking underground methanol pipe was discovered between the methanol ASTs and the
formaldehyde plant. The leak was repaired and groundwater in MW-ACE and several other wells was
monitored for methanol.
24
Formaldehyde plant
311412007
27 gallons of Dowthemi was spilled inside containment at the formaldehyde plant
NIA
Location unknown
9/2712007
125 gallons of 50% fomialdeh de resin was spilled behind a warehouse
25
Alimet tank
101312007
Small amount of alimet leaked outside of failed containment. The containment was repaired immediately
25
Hexamine plant
1/3012008
1,514 gallons of liquid hexamine overflowed from a sump during a rain event.
27
Hexamine tank farm
3/17/2008
20 gallons of 42% hexamine spilled inside the containment area at the hexamine tank farm
28
Railcar loading station
4123f2008
25 gallons of 42% Hexamine was spilled inside containment at railcar loading station
NIA
Location unknown
511 B12008
125 gallons of 50% formaldehyde was spilled inside containment at the formaldehyde plant
29
Hexamine tank farm
B1912008
5 minutes of overflow of 25% Hexamine occurred inside the containment at the hexamine tank farm
30
Special Projects plant
9/26/2008
391 pounds of 6% vanadium oxalate solution was spilled at the Special Projects loading ramp.
31
1
Formaldehyde plant
11/4/2008
700 gallons spilled from overflow of the "Green Tank" behind the formaldehyde plant. Estimated 200
gallons reached the outfall at Livingston Creek.
Former AcmelKaiser.
Fertilizer Plant south of railroad tracks
10
Former fuel oil ASTs
May 1992
Petroleum contaminated soil was discovered during installation of monitoring well MW-4. Approx. 350
cubic yards of impacted soil were excavated in July 1992 and land Farmed on site. The source was an oil -
water separator that collected drainage from the its fuel oil ASTs containment.
Note:
' - See Figure 2-5 for approximate release locations.
Page 3 of 3

Table 2-4
Summary of Historical Groundwater Data
Wright Chemical Corp. Site - Riogelwood, NC
Well
1 Previous Sampling Parameters
Historical Exceedances
I of 2L Standards or MCLa
Other
COCe
VOC I SVOC I Metals I PesVPCB I Form. I Meth. Hex. I PH MS
TOC
Amm, I Nitrate
I Nitrite
I Sulfate CI Phenols P Grass uIR
",-4. WrlahtChmftcal'Monitorin
Wells
..£; • >mr
''..
MW-1
X
X
X
X
X
X
X
X
X
X
X
X
Fe As. Cr Pb, Mn
Al
MW-2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
TDS, Sulfate, Form, Fe, Mn,
As Cr Pp Vn
At
MW-3
X
X
X
X
X
X
X
X
X
X
Nitrate Form Fe Mn
MW4
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
TDS, Form, As. Cr, Fe, Pb,
Mn, Vn, Phenol,
Hex, At
MW-5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
I
TDS Form Fe
MW-6
X
X
X
X
X
X
X
X
X
X
X
X
X
TDS, Form, Fe, Sulfate,
Meth, As, Naphthalene, pH,
Hex
MW-7
X
X
X
X
X
X
X
X
X
X
X
X
X
X
TDS, Sulfate, Form, Meth,
As, Cr, Fe, Pb, Mn, Vn,
Naphthalene, Benzene,
TCE H
Hex, At
MW-8
X
X
X
X
X
X
X
X
X
X
X
X
X
TDS, Sulfate, Form, As, Fe,
Mrr, Naphthalene, Acetone,
Meth
MW-9
X
X
X
X
X
X
X
X
X
X
X
X
X
X
pH, TDS, Sulfate, Form,
Meth, As, Cr, Cd, Cu, Fe,
Pb, Mn, W Vn, Zn,
Al
MW-10
X
X
X
X
X
X
X
X
X
X
MW-11
X
X
X
X
X
X
X
X
X
X
X
X
X
X
As Cr Fe Pb. Mn Ho
At
MW-12
X
X
X
X
X
X
X
X
X
X
MW-13
X
X
X
X
X
X
X
X
X
X
X
TDS Nitrate.
MW-14
X
X
X
X
X
X
X
X
X
X
MW-15
X
X
X
X
X
X
X
X
X
X
X
X
X
X
TDS, Nitrate, Cr, Fe, Mr. pH
At
MW-16
X
X
X
X
X
X
X
X
X
X
X
X
pH,TDS, Sulfate, Nitrate,
As Nitrite
MW-17
X
X
X
X
X
X
X
X
X
X
X
X
Fe
MW-18
X
X
X
X
X
X
X
X
X
X
X
X
Form Fe Mn
MW-19
X
X
X
X
X
X
X
X
X
X
X
X
Fe
MW-20
X
X
X
X
X
X
X
X
X
X
X
X
Fe
MW-21
X
X
X
X
X
X
X
X
X
X
X
X
TDS, Nitrate, Form, Fe, Mn
At
MW-22
X
X
X
X
X
X
X
X
X
X
X
X
MW-23
X
X
X
X
X
X
X
MW-25
X
X
X
X
X
X
X
MW-26
X
X
X
X
X
X
X
X
X
X
X
As, Fe, Pb, pH, TDS,
Nitrate
Al
MW-21
X
X
X
X
X
X
X
X
X
X
X
pH, TDS, As, Cd, Fe, Mn,
uffate Nitrate
AI
MW-28
X
X
X
X
X
X
X
XI
TDS Fe Sutfate Nitrate
Page 1 of 2

Table 2-4
Summary of Historical Groundwater Data
Wright Chemical Corp. Site - Riagehvood, NC
Well
Previous Sampling Parameters
Historical Excesdances
Other
VOC
SVOC
Metals
PezVPCB
Form,
Meth,
Hex.
PH
TDS
TOC
Amm.
Nitrate
Nitrite
Sulfate
CI
Phenols
P
Groas alp
of 2L Standards or MCLs
COCs
MW-29
x
X
X
X
X
X
X
X
X
X
X
Fe, TDS, Nitrate, Cl, THF,
Methylphenol, Phenol,
Math As
MW-30
X
X
pH, Fe, Sulfate, Nitrate,
TDS Pb As
MW-ACE
(MW-24)
X
X
X
x
x
x
x
X
TDS, Fe, Acetone, Meth,
Chioromethane,
Na Mhafene
TEST
WELL-1
X
X
x
x
X
X
TDS, Nitrate
WWMW-01
x
x
x
x
x
x
X
JTDS
WWMW-021
I
I
X
X
X
X
X
X
I X
I
I
I
ISurate. Nitrate, TDS
Kaiser
Mon
Wells
KMW-1
I
x
x
X
X
I X
X
X
X
I x
X
x
PH Fe Mn Nitrate
KMW-2
I
X
x
X
X
X
X
X
x
X
X
pH, Fe Mn F. Nitrate
P
KMW-3
x
x
X
X
X
X
X
x
X
X
TDS Fe3 Mn F
P
KMWA
x
x
x
X
X
X
X
X
x
X
X
TDS, Fe, Mn, Cl. F, Nitrate,
Sulfate Cl
P
KMW-5
x
X
X
x
X
X
x
x
X
X
X
TDS, Fe, Mn, Cl, F. Nitrate,
Sulfate Cl
P
KMW-0
x
X
X
x
x
X
X
x
X
x
X
TDS. Fe, F, Mn, Nitrate,
Sulfate
P
KMW-7
x
X
X
X
I
X
X I
x
I x
X
X
X I
TDS Fe F Mn, Nitrate
P
KMW
X
X
X
X
I
x
X I
X
I x
X
X
X
TDS. Fe F Mn Nitrate
P
KMW-9
x
X
x
X
X
X
pH. TDS, Mn Nitrate
KAC-MW-1
X
X
x
X
X
Fe. Mn. Zn
KAG-MW-21
X I
X
x
x
X
Fe. Mn, Zn
KAC-MW-31
X I
X
X
x
X
As. Cd. Fe, Mn
KAC-PW-S
X I
X
x
x
X
As, Cd, Fe, Mn Dieldrin
Para uat
KAC-PW-6
X
X
X
x
X
Fe, Mn
Al
Notes: Bold: Indicates a parameter that exceeds 10 times the 2L Standard or MCL
Bold Red: Indicates a paramelet that exceeds 100 times the 2L Standard or MCL
2L Standards: North Carolina Administrative Code's Title 15A, Subchapter 2L, Groundwater Oualily Standards, 15A NCAC 2L .0202 (Effective January 1, 2010)
MCL: U. S. Erwironmental Protection Agency Maximum Contaminant Levels
AI:
Aluminum
Farm:
Formaldehyde
Amm:
Ammonia
Hex:
Hexamine
As:
Arsenic
Hg:
Mercury
Cd
Cadmium
Meth,
Methanal
Cl:
Chloride
Mn:
Manganese
COC:
Constituent of Concern
Ni:
Nickel
Cr
Chromium
P:
Phosphorous
Cu
Copper
Pest/PCB:
PesticidestPolyrhlorinated Blphenyls
F:
Fluoride
Pb:
Lead
Fe:
Iron
SVOC.
Semivolatile Organic Compounds
Pape 2 02
TCE:
Trichioroethene
TDS'
Total Dissolved Solids
THF:
Tetrahydrofuran
Vn:
Vanadium
VOC:
Volatile Organic Compounds
Zn.
Zinc

Table 3-1
Potential Contaminant Source Areas
Wright Chemical Corp. Site - Riegetwood, NC
Potential
Source Area
Description
Potential Contaminants
Supporting Documentation Reference
Former'Acme i M Ctiemleaf
Plant north of ndiroad backs)' .:
W-1
Former lead chamber
Sulfate, lead, iron, low pH,
1883 and 1910 Sanborn maps showing the location of the former lead chambers; magenta
sulfuric acid plant. Used
other metals (from impurities in
colored soil and denuded floodplain (Expanded Site Inspection [ESI), NCDENR, 200a and
lead -lined chambers and
pyrite - arsenic, selenium,
multiple historical reports); elevated lead and arsenic concentrations in MW-30 (CAP
towers to produce sulfuric
nickel, Cobalt, and others, also
Monitoring Report 2nd Event 2010, Sherrill Environmental, 201% elevated arsenic, sulfate
acid from pyrite. Also
increased dissolution of metals
concentrations plus low pH in MW-9, MW-27, and MW-30 (CAP Monitoring Report 2nd
included associated
in groundwater from low pH),
Event 2010, Sherrill Environmental, 2010 and multiple previous reports), elevated metals
denuded floodplain area.
pesticides
and pesticides concentrations in 2007 ESI soil samples (ESI, NCDENR, 2008); elevated
metals and pesticides concentrations in 1989 Site Screening Investigation ]SSI) surface soil
location WC-SS-02 and sediment location WC-SD-09 (SSI Report, NUS Corp., 1989).
W-2
Former alum plant and
Aluminum, sulfate, potassium,
1967 topographic survey of Wright Chemical showing alum plant location; 1973 map of
equalization pond (co-
lead, hexamine, formaldehyde,
Kaiser drainage structures showing discharge to the Wright Chemical equalization pond;
located). Alum plant
ammonia, nitrate, fluoride,
1987 Wright Chemical topographic survey showing pond locations; 1989 Wright Chemical
produced alum from
other metals, low pH,
topographic survey showing pond locations; elevated arsenic, sulfate, and TDS
bauxite, sulfuric acid, and
pesticides, petroleum, other
concentrations in MW-9 (CAP Monitoring Report 2nd Event 2010, Sherrill Environmental,
potassium sulfate.
unidentified organics,
2010 and multiple previous reports); elevated metals in 1989 SSI groundwater sample WC -
Equalization pond received
radionuclides
MW-07 [from MW-9] plus elevated metals, organics, and pesticides in sediment samples
process waste from the
WC-SD-07 and WC-SD-08 [from equalization pond] (SSI Report, NUS Corp., 1989).
contact sulfuric acid plant,
drainage from the Kaiser
fertilizer plant, and runoff
from the hexamine plant.
W-3
Former open ditch and
Aluminum, sulfate, potassium,
1967 topographic survey of Wright Chemical showing ditch and discharge from alum plant
outfall that conveyed
lead, ammonia, nitrate,
to ditch via 8" pipe, 1973 map of Kaiser drainage structures, 1984 Kaiser Investigation
discharge from former
fluoride, phosphate,
Report Figure 2 (Kaiser Agricultural Chemical Investigation Report, NUS Corp., 1984);
sulfuric acid plants, alum
phosphorous, other metals, low
elevated metals, pesticides, and radionuclides in 2007 ESI sediment samples WC-003-SD
plant, and fertilizer plant to
pH, pesticides, petroleum,
and WC-013-SD (ESI, NCDENR, 2008).
Livingston Creek (prior to
radionuclides
Construction ofponds)
Page 1 of 6

Table 3-1
Potential Contaminant Source Areas
Wright Chemical Corp. Site - Riegelwood, NC
Potential
Source Area
ID
Description
Potential Contaminants
Supporting Documentation Reference
W-4
Former outfall pond.
Hexamine, formaldehyde,
1987 Wright Chemical topographic survey showing pond locations, 198g Wright Chemical
Received boiler blowdown,
ammonia, methanol, metals,
topographic survey showing pond locations, volatile organics and metals in 1989 SSI
cooling tower biowdown,
other volatile and semivolatile
sediment sample WC-SD-06 [from outfall pond] (SSI Report, NUS Corp., 1989).
and water softener
organics, sulfate
backwash from all onsite
operations and discharged
to Livingston Creek.
W-5
Former sulfuric acid railcar
Low pH, sulfate, sodium,
1987 - 1990 Wright Chemical spill reports; Remedial Action Plan for December 1989
loading area. Location of
carbonate, metals from
Sulfuric Acid Spill (Aware Environmental, 1990); Koch 1991 sulfuric acid spill
multiple sulfuric acid spills
increased groundwater
documentation and cleanup efforts; low pH in MW-27, elevated sulfate in MW-27 and MW-
including large spills in
dissolution due to low pH
16, elevated arsenic in MW-16 and MW-27 (CAP Monitoring Report 2nd Event 2010,
1989 and 1991.
Sherrill Environmental, 2010 and multiple previous reports).
W-0
Former contact sulfuric acid
Sulfur, sulfate, vanadium,
1967 Wright Chemical topographic survey showing the sulfuric acid plant; 1987 - 1990
plant/former Dowicil
sodium, carbonate, metals, low
Wright Chemical spill reports; 1987 Wright Chemical sulfuric acid plant layout, metals,
plant/current dry products
pH, bromine, bromide, Dowicil
VOCs, SVOCs, and PCBs detected in 1989 SSI surface soil sample WC-SS-03 [from acid
plant (co-iocated). Location
(gautemium or quat), 1,3-
plant] (SSI Report, NUS Corp., 1989); 1990 Koch survey and maps of the sulfuric acid
of former sulfuric acid
dichloropropene, methylene
plant; 1995 Wright Chemical dichloropropene spill documentation [including soil sample
production using vanadium
chloride, formaldehyde,
results and "Dowidl Well" results]; 1997 Wright Chemical Dowidl release records [2 spills]
pentoxide catalyst, 1997
hexamine, volatile and
(2011 Wright Chemical Corp. response to EPA information request).
spills of Dowial, and
semivolatile organics, PCBs
paraformaldehyde
production
W-7
Hexamine plant. Production
Formaldehyde, ammonia,
1967 Wright Chemical topographic survey showing the hexamine plant with wooden
of hexamine from
hexamine, methanol,
formaldehyde tanks and a steel methanol tank; 1991 Koch letter to Wright Chemical
formaldehyde and
dimethylether, formic acid,
documenting a DIDP oil spill in the hexamine plant that also impacted the sulfuric acid plant;
ammonia-
diisodecyl phthalate (DIDP)
1993 spill of 50% formaldehyde solution (Wright Chemical spill report to NCDENR); 1994
Wright Chemical letter documenting a spill from the 44 cooling tower; 1997 hexamine spill
to duck pond ("Environmental Matters' section of 2006 Oak Bark to Hexion asset purchase
agreement); 2008 sump overflow spill of 1514 gatlons liquid hexamine (DENR records);
20D7 and 2008 spills of 42% hexamine at tank farm and railcar loading area (DENR
records).
Page 2 of 6

Table 3-1
Potential Contaminant Source Areas
Wright Chemical Corp. Site - Riegelwood, NC
Potential
Source Area
ID
Description
Potential Contaminants
Supp6rting Documentation Reference
W-8
Fuel oil storage area. One
Polynuclear aromatic
1984 hand written note in DENR file documenting 700 gallon spill of #6 fuel oil; 1993 Wright
9.000 gallon capacity #6
hydrocarbons (PAHs)
Chemical hand drawn facility map indicating location of fuel oil tank.
fuel oil tank.
W-9
Formaldehyde plant.
Methanol, metals (silver, iron,
1988 - 1990 Wright Chemical groundwater monitoring summary table showing elevated
Production of formaldehyde
chromium, cobalt, copper,
formaldehyde concentrations in MW-6 and MW-8; 1989 SSI soil sample WC-SS-07 (from
from methanol using metal
molybdenum, vanadium) ,
formaldehyde plant) that detected high concentrations of unidentified organic compounds;
or metal oxide catalysts.
formaldehyde, ethylene glycol,
1990 NCDENR enforcement report for formaldehyde spill; 1993 NCDENR and Wright
ammonia
Chemical formaldehyde spill documentation; 1994 NCDENR and Wright Chemical
formaldehyde spill documentation; 1995 Wright Chemical and NCDENR Dowthemr spill
documentation; 2000 formaldehyde spill ("Environmental Matters' section of 2006 Oak Bark
to Hexion asset purchase agreement).
W-10
Former resin pond.
Metals, organics, pesticides,
1988 - 1990 Wright Chemical groundwater monitoring summary table showing elevated
Received resin waste and
sulfate, nitrates, ammonia,
TDS, TOC, ammonia, sulfate, and formaldehyde concentrations in MW-8; 1989 SSI
stormwater runoff from the
chloride- This area received
sediment samples WC-SD-04 and WC-SD-05 (from resin pond) that detected high
facility.
runoff from most of the site so
concentrations of tentatively identified and unidentified organic compounds, elevated iron,
a wide range of potential
sulfate, ammonia, TDS, and TOC in MW-8 (CAP Monitoring Report 2nd Event 2010, Sherrill
contaminants is expected.
Environmental, 2010 and multiple previous reports).
W-11
Lined wastewater pond and
Formaldehyde, hexamine,
1988 - 1990 Wright Chemical groundwater monitoring summary table showing elevated
wastewater tanks.
metals, organics, pesticides,
TDS, TOC, ammonia, sulfate, methanol, formaldehyde, and hexamine concentrations in
Received wastewater from
sulfate, nitrates, ammonia,
MW-7; elevated iron, sulfate, ammonia, TDS, and TOC in MW-7 (CAP Monitoring Report
processes Conducted at the
chloride. This pond received
2nd Event 2010, Sherrill Environmental, 2010 and multiple previous reports); 2009 Hexion
facility since pond
wastewater from most
letter to Oak -Bark Corp asserting that Oak -Bark disposed of unpermitted solid wastes in the
construction in the 1980s.
processes conducted at the
pond including molybdenum catalyst, resin batches, and contaminated soil; elevated metals
site since the 1980s, so a wide
and unidentified organics in 1989 ESI sediment sample WC-SD-11 (from Mill Creek near
range of potential contaminants
pond and wastewater tanks).
is expected.
W-12
Methanol and Acetone
Methanol, acetone, ethylene
1992 Wright Chemical acetone spill documentation and corrective action plan; historically
ASTs
glycol
elevated acetone and methanol concentrations in MW-ACE; 2002 acetone spill reference in
"Environmental Matters" section of 2006 Oak Bark to Hexion asset purchase agreement;
2002 methanol pipe leak and subsequent 2003 - 2006 annual methanol groundwater
monitoring documented by Shemll Environmental.
Page 3 of 6

Table 3-1
Potential Contaminant Source Areas
Wright Chemical Corp. Site - Riegelwood, NC
Potential
Source Area
ID
Description
Potential Contaminants
Supporting Documentation Reference
W-13
Siiane plant/Former
Chloropicrin, sodium, chloride,
1988 - 1990 Wright Chemical groundwater monitonng summary table showing elevated
chloropicrin plant
nitrates, aluminum, copper,
TDS, TOC, ammonia, formaldehyde, and hexamine concentrations in MW-6; 1998 Wright
sitanes, siloxanes, hexane,
Chemical fine chemical laboratory fire sampling showing low-level volatile organics in the
toluene, benzaldehyde,
drainage pathway east of the plant; 2001 corrective action plan and subsequent monitoring
Idethylamine (TEA), allyl
reports for the release from wastewater tank #3 indicating elevated TDS. TOC, sulfate,
amine, acetic acid, acetate,
chloride, coliform, tetrahydrofuran, methylphenol, phenol, methanol, and acetic acid in MW-
metals (from acetate salts),
29; elevated iron, sulfate, ammonia, TDS, and TOC in MW-8 (CAP Monitoring Report 2nd
tetrahydrofuran (THF)
Event 2010, Sherrill Environmental, 2010 and multiple previous reports).
W-14
Former aeration pond and
Metals, organics, pesticides,
1988 - 1990 Wright Chemical groundwater monitoring summary table showing elevated
spill basin
formaldehyde, methanol,
TDS, TOC, ammonia, formaldehyde, and hexamine concentrations in MW-4; 1989 SSI
hexamine, Sulfate, nitrates,
groundwater sample WC-MW-06 [from MW4] indicating elevated aluminum, arsenic, iron,
ammonia, chloride. This pond
lead, potassium, sodium, vanadium, zinc, phenol, tentatively identified organics, and
received wastewater from the
unidentified organics.
hexamine plant and also water
from the equalization basin and
the resin pond, so a wide range
of potential contaminants is
expected.
W-15
Monofill
Metals, organics, pesticides,
According to the "Environmental Matters" section of the 2006 Oak -Bark to Hexion asset
formaldehyde, methanol,
purchase agreement, the monofilt contains "the scrapings of several formerly unlined
hexamine, sulfate, nitrates,
wastewater ponds containing approximately 750,000 gallons of hexamine waste water and
ammonia, chloride
approximately 15,O00 cubic yards of muck/scrapings from the bottom of said unlined
radionuclides. This unit
ponds."
received sludge from all of the
former unlined ponds when
they were closed in the 1990s
so a wide range of potential
contaminants is expected..
W-16
Former laboratory sink
Metals, organics,
2000 NCDENR compliance inspection report that described a laboratory sink used by
discharge
formaldehyde, methanol,
chemists to wash glassware that discharged to ground surface behind the lab.
hexamine, sulfate, nitrates,
ammonia, chloride.
Page 4 of 6

Table 3-4
Potential Contaminant Source Areas
Wright Chemical Corp. Site - Riegelwood, NC
Potential
Source Area
10
Description
Potential Contaminants
Supporting Documentation Reference
W-17
Former 10-acre spray field
Metals, organics, pesticides,
1988 - 1990 Wright Chemical groundwater monitoring summary table showing elevated
formaldehyde, methanol,
TDS, ammonia, nitrate, sulfate, and formaldehyde concentrations in MW-2 and MW-3; 1089
hexamine, sulfate, nitrates,
SSl groundwater sample WC-MW-04 (from MW-21 indicating elevated metals and
ammonia, chloride. This spray
unidentified organics and sediment sample WC-SD-12 [from pond in spray field] indicating
fie3d received wastewater from
tentatively identified/unidentified organics and pesticides; 1990 remedial action plan for the
the aeration basin, so a wide
10-acre spray field indicating elevated levels of formaldehyde, ammonia, iron, manganese,
range of potential contaminants
sulfate and nitrate downgradient of the spray field.
is expected.
W-18
Former 20-acre spray field
Metals, organics, pesticides,
1988 - 1990 Wright Chemical groundwater monitoring summary table showing elevated
formaldehyde, methanol,
TDS and nitrate in spray field monitoring wells; 1987 and 1988 Wright Chemical
hexamine, sulfate, nitrates,
documentation of wastewater spills due to piping to the 20-acre spray field; 1989 SSI
ammonia, chloride. This spray
groundwater sample WC-MW-02 [from MW-111 and WC-MW-03 (from MW-15] indicating
field received wastewater from
elevated metals and surface soil sample WC-SS-09 [from 20-acre spray field] indicating
the aeration basin, so a wide
high levels of unidentified organic compounds;
range of potential contaminants
is expected.
W-19
Kelly ponds
Metals, organics, pesticides,
2000 NCDENR NOV listing low pH and elevated ammonia in Kelly pond wells MW-22, MW-
formaldehyde, methanol,
25, and MW-26; 2000 NCDENR and Wright Chemical letters referencing a wastewater spill
hexamine, sulfate, nitrates,
at the Kelly pond area in August 1999; 1996 Kelly Pond #2 liner leak, 1995 and 1996 Kelly
ammonia chloride.
Pond #3 overflows.
W-20
Wastewater spills to Mill
Metals, organics, pesticides,
1987 Wright Chemical and NCDENR documentation of an 8,000-galton wastewater spill to
Creek
formaldehyde, methanol,
Mili Creek; 1988 Wright Chemical and NCDENR documentation of a wastewater spill to Mill
hexamine, sulfate, nitrates,
Creek.
ammonia chloride.
Page 5 of 6

Table 3-1
Potential Contaminant Source Areas
Wright Chemical Corp. Site - Riegelwood, NC
Potential
—j
Source Area
ID
Description
Potential Contaminants
Supp2rting Documentation Reference
Former AcmelKaiser Fertilizer Plant south of railroad tracks
K-1
Former fertilizer plant
Phosphorous, phosphate,
1997 Kaiser groundwater monitoring report and previous reports indicating elevated TpS,
production area
sulfate, fluoride, carbonate,
chloride, fluoride, ammonia, nitrate, potassium, sulfate, and phosphorous in MW-4, MW-4S,
depressed pH, metals (from
MW-5, and MW-5&
impurities in phosphorite),
radionuclides, potassium,
chloride, ammonia, nitrate,
carbonate.
K-2
Petroleum contaminated
Petroleum constituents
1992 Atlanta Testing 8 Engineering report documenting excavation of petroleum impacted
soil near MW-4
soils
K-3
Drainage pathways,
Phosphorous, phosphate,
1984 NUS site investigation that detected metals, dieldrin, and paraquat in former
retention pond, and outfall
sulfate, fluoride, carbonate,
monitoring welts near the pond; 1989 Atlanta Testing 8 Engineering pond sediment
to Mill Creek
depressed pH, metals (from
samples indicating elevated metals, TKN, ammonia, TOC, sulfate, and phosphate and MW-
impurities in phosphorite),
6 groundwater sample indicating slightly elevated fluoride, TKN, ammonia, sulfate, and
radionuclides, potassium,
potassium; 1992 groundwater monitoring report indicating elevated nitrate, TDS, fluoride,
chloride, ammonia, nitrate,
iron, and manganese in MW-6; 1997 groundwater monitoring report indicating elevated
carbonate.
nitrate TDS fluoride. sulfate, and manganese in MW-6.
Page 6 of 6

�I
Columbus Count
NC0087947 Currently receives wastewater from only one SiU (Momentive). Design flow rate is 0.125
MGD. Average flow currently is around 12% of that or 0.16 MGD. Outfall 001 is to Livingston Creek.
Momentive
NC0003395 - Only outfall 002 is active. Non -contact cooling water, reverse osmosis reject, water
softener backwash, water softener regenerant and firewater tank blowdown. Discharge is to Livingston
Creek. Outfall 001 is now connected to Columbus County WWTP.
WQ0034775 — Closed Loop Recycle for A/C chiller make-up from lined pond.
NC5000156 — NPDES Stormwater
Silar
NCS000533 — NPDES Stormwater
Oak -Bark
WQ0003361—Closed Loop Recycle for Kelly Ponds Storage.
WQ0005699 — Land Application of Residual Solids
NC5000532 — NPDES Stormwater

9;
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
August 23, 2010
Mr. Peter Yurgel
Silar LLC
333 Neils Eddy Rd.
Riegelwood, NC 28456
Subject: Draft NPDES Stormwater Permit
Permit No. NCS000533
Silar LLC
MeddeR4u-rg County
Dear Mr. Yurgel:
Enclosed with this letter is a copy of the draft stormwater permit for your facility. Please review the draft
very carefully to ensure thorough understanding of the conditions and requirements it contains.
'The draft permit contains the following: -
1. Analytical monitoring parameters, BOD, COD, TSS, Ammonia, TKN, Total Nitrogen, Formaldehyde and
pH, have been included in this permit because they are potential pollutants and were above the
benchmarks in the data submitted with the application.
2. In stream sampling for Dissolved Oxygen and p I has been included for Outfall 005.
3. Acute Toxicity has been included for this site due to concerns about multiple toxic sources as well as
onsite unknown chemical mixing and resultant unknown environmental toxicity. The ACUTE
TOXICITY APPENDIX A. ACUTE TOXICITY TESTING FOR STORMWATER OUTFALLS has been
_included at the end of the permit text.
4. Note that the draft permit allows this site to discontinue monitoring four parameters; Total Phosphorus,
Methanol, Total Residual Chlorine, and Total Recoverable Lead, if the first eight samples are below
benchmark values. These parameters were included in the draft permit at the request of the Wilmington
Regional Office for consistency with the proposed NPDES stormwater permits for neighboring
operations owned by Hexion Specialty Chemicals, Inc. and Oak Bark.
5. All analytical monitoring is set to quarterly during a representative storm event as defined in fart II
Section B. The permittee must also document the total precipitation for each event. If no discharge
occurs during the sampling period, the permittee must submit a monitoring report indicating "No.F`^w"
within 30 days of the end of the six-month sampling period. Additionally, samples must be taken a '
minimum of 60 days apart, as specified in Table 2.
6. ',.Benchmarks for analytical monitoring are included in this draft permit. Exceedances of benchmark '
'values require the permittee to increase monitoring, increase management- actions, increase record `
keeping, and/or install stormwater Best Management Practices (BMPs) in a tiered program. If the
sampling results are above a benchmark value, or outside of the benchmark range, for any parameter at
any outfall then the facility shall follow the Tier 1 guidelines which require a facility inspection within
two weeks and implementation of a mitigation plan within two months. If during the term of this permit,
the sampling results are above the benchmark values, or outside of the benchmark range, for any specific
parameter at a specific discharge outfall two times in a row (consecutive), then the facility shall follow the
Wetlands and Stormwater Branch One
1617 Mail Service Center, Ralegh, North Carolina 27699-1617 NorthCaroli na
Location: 572 N. Salisbury St, 9�Raleigh, North Carolina
Phone: [phone] h FAX: 919-9-Service:
807-6494 l Customer Servce: 1-877-623-6746
Internet: www.ncwaterqualit .org
An Equal Opportunity 1 Affirmative Action Employer

Mr. Peter Yurgel
Silar LLC
Permit No. NCS000533
Tier 2 guidelines which require a repetition of the steps listed for Tier 1 and also immediately institute
monthly monitoring for all parameters at every outfaIl where a sampling result exceeded the benchmark
value for two consecutive samples.
7. You are required to collect all of the analytical and qualitative monitoring samples during representative
storm events as defined in Part 1I Section B. Qualitative monitoring is required regardless of
representative outfall status.
8. You are responsible for all monitoring until the renewal permit is issued. See Footnote 1 of Tables 1, 4,
and 5.
9. Vehicle maintenance monit.)ring has been set to quarterly in order to coincide with analytical and
qualitative monitoring. Monitoring for TPH has replaced Oil & Grease. This requirement appears in all
Individual Stormwater permits, however it only applies to facilities that do vehicle maintenance. If the
facility begins vehicle maintenance during the permitted timeframe then the requirements shall apply.
Please submit any comments to -,r.e no later than thirty (30) days following your receipt of the draft.
Comments should be sent to the address Iisted at the bottom of this page. If no adverse comments are
received from the public or from you, this permit wiII likely be issued in about two months.
If you have any questions or comments concerning this draft permit, contact me at [phone] or
brian.lowther0ancdenr.gov
CC'. Wilmington Regional Office, Linda Willis
Stormwater Permitting Unit
Attachments: Draft Permit NCS000533
Sincerely,
Brian Lowther
Environmental Engineer
Stormwater Permitting Unit
2

NCS000533
ADDENDUM —August 19, 2010
The draft permit was revised prior to public notice based on the recommendations of the WiRO and their desire to
make the permits consistent. Parameters and monitoring frequency are now consistent with the Oak Bark and
Hexion draft permits. Total Phosphorus (TP), Methanol, Total Residual Chlorine (TRC), and Lead were added to the
monitoring suite as a result; however, the draft proposes monitoring may be discontinued if the first eight (8)
samples are below benchmark values (because current industrial activities here may not be sources). Another
change based on the WiRO staff report was to include in stream sampling for Dissolved Oxygen and pH at outfall
008. -BCL
Page 9 of 9

NCS0005 -33
;Kj;YA1F
NC®ENR
North Carolina
Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue.
Coleen H. Sullins
Dee Freeman
Governor
Director
Secretary
STAFF REVIEW AND EVALUATION
NPDES Stormwater Permit
Facility Name:
Silar, LLC.
NPDES Permit Number:
NC5000533
Facility Location:
333 Neils Eddy Rd, Riegelwood, NC (Columbus County)
Type of Activity:
CHEMICAL MANUFACTURING
SIC Code:
2869
Receiving Streams:
See Figure 1ED
�-► `= = `. l
River Basin:
Cape Fear River Basin, Sub -basin 03-06-17
p
_ ;
Stream Classification:
C; 5w
}I1V n 9110
Proposed Permit Requirements:
See attached draft permit.
DENtt - ;a;�t.tF pUHL11'Y
Wetlands 8 SEanmwa r Branch
Monitoring Data:
See Table 1
Response Requested by (Date):
Central Office Staff Contact:
Return to: Brian Lowther, [phone]
tlpo��r�,;�
Special Issues:
Issue
Rating Scale: I easy to I0 hard
Compliance history
6
Benchmark exceedance
7
Location (TMDL, ME
species, etc)
5
Other Challenges:
• Acute Tox
8
Difficulty Rating:
26/40
1
Special Issues Explanation:
• This site is part of a larger site which was owned by Wright Corporation. In December 2006 a major
portion was sold to Hexion Specialty Chemical. The sale transferred part of the facility to Hexion and the
remaining part became Oak -Bark Corporation. This remaining part included Silar. Hexion originally asked
to transfer the permit with all of the stormwater outfalls. in November 2008, Hexion applied for a
separate perw,hich left out 4 existing outfalls (SW001, SW002, SW005, and SW007). On April 22, 2009
0BC sold Silar- to Monomer Polymers which has outfalls SW001, SW002, and SW005.
o Outfalls'and responsibilities and permits need to be defined for each company.
■ Hexion's stormwater outfalls are 003, 004, 006, 008, and 009 (from 2008 application).
■ Oak -Bark Corp. manufacturing area drains to stormwater outfall 007.
Page] of 8

NCS000533
4
■ Silar areas drain to stormwater outfalls 001, 002, and 005.
0 3 Permits will be issued for Hexion, Oak -Bark and Silar. +
o The site has had past problems with SW and WW issues.
Description of Onsite Activities:
+ Silar LLC (a division of MPD Holdings) manufactures Organosilicon compounds and Fine organics
using batch processes.
• The Silar production facilities in Acme, NC and Scotia, NY are primarily engaged in the manufacture
of organosilanes, silicones and adhesion promoters for use in pharmaceutical, biomedical devices,
electronics, industrial and R&D markets. Silai's manufacturing facilities are ISO 9002 certified and capable
of producing gram and kilo-lau scale through multi -ton at the Acme facility. (From www.silar.com)
Documents Reviewed:
• NPDES Stormwater Permit Application Materials
• National Heritage Program (NHP) Threatened and Endangered Species Database
6 Central Files
• EPA Sector -Specific Permit, 2008
• 2010 303(d) List, 2008 draft
• 2005 Cape Fear Basinwide Plan
0 TRI database
History:
• June 5, 2009: Application received
Page 2ofi8

NCS000533
:y
NCS000533
`7
MW SCale P24,000
Figure 1: Map of Facility
Silar LLC
Latitude: 340 19' 43" N
Longitude: 780 12' 5" W
County: Columbus
Receiving Stream: Livingston Creek
Stream Class: C; Sw
Sub -basin: 03-06-17 (Cape Fear River Win)
Facility Location
Page 3 of 8

Y" a f
NCS000533
Central Office Review Summary:
1. Owner's Other Permits: No other permits for Silar LLC were in RIMS. However, on the same site Hexion
Specialty Chemicals, Oak -Bark Corporation, and Wright'Corporation exist.
• Hexion - NCS000156 Stormwater —Expired, NC0003395 Wastewater, WQ0022324 Pump and Haul
• Oak -Bark — NCS000532 Stormwater in review, WQ0003361 Wastewater Recycling, WQ0005699
Surface Disposal of Residual Solids
• Wright Corp. — SW8000828 State Stormwater, WQ0001771 Surface Irrigation- Inactive, WQ0015551
Land Application of Residual Solids- Inactive
2. General Observations:
Three Outfalls:
• 001- 34' 19' 69" -7512' 2" -- 211, 220 sq ft with 17, 670 sq ft impervious. Silar Drum Warehouse:
treatment is housekeeping training and monthly audits by EHS.
• 002- 34 19' 71" -7912' 8" — 24,158 sq ft with 24,158 sq ft impervious. Silar and Fine Chemical Lab:
treatment is housekeeping training and monthly audits by EHS.
• 005- 34 19' 76" -79'12' 6" — 43,560 sq ft with 15,119 sq ft impervious. North Side of Silar Plant: treatment
is housekeeping training and monthly audits -by EHS. Relocated Drum Rinse Station to a contained Area.
• No significant spills or leaks occurred in the last three years.
• Potential Pollutants: Chlorine, Magnesium, Chloroform, Methylene Chloride, Tetra chloroethylene,
Toluene, Allyl chloride, Diethylamine, Dimethylamine, Styrene, Triethylamine, Trimethylamine, Vinyl
acetate, and Xylene.
Impairment: Livingston Creek is not on the 2010 303(d) list but it was on the 2008 draft list for turbidity.
Basinwide Plan lists Livingston Creek as have low dissolved oxygen as a stressor. The Basinwide Plan has no
recommendations for Livingston Creek.
Threatened and Endangered: The natural heritage virtual workroom shows there two federally protected
species within a two mile radius of the facility: Acipenser brevirostrum (Shortnose Sturgeon) and Lysimachia
asperulifolia (Rough -Leaf Loosestrife).
5. Location: C; Sw
6. Analytical Monitoring Notes: See Table 1. Data submitted with application.
• SOD, COD, TSS, Ammonia, TKN, Total Nitrogen, and Formaldehyde were over the benchmarks.
• Based on the SIC of 2869 the industry is covered in the EPA Multi -Sector General Permit under Sector C
Chemical and Allied Products Manufacturing, and Refining. The sector does not recommend any specific
monitoring.
• The reviewer recommends including BOD, COD, TSS, Ammonia, TKN, Total Nitrogen, and Formaldehyde
into the renewed permit because they are potential pollutants and previous samples in the application
were above our current benchmarks.
• The reviewer recommends including acute toxicity monitoring. This recommendation is based on the site
having many potential pollutants and poor housekeeping by the former owners as well as being requested
by the regional office. See attached rationale document for Acute Toxicity for more details.
Qualitative Monitoring Notes: Visual observations were done at Outfalls 002, 005 and 007 three different
times. Two times there was no rain but no other outfalls were identified. That last time was done during rain
and it was noted that there was no outfall from this source. All runoff was retained in the small retention
pond south of the outfall. It was observed there was no oil sheen.
Page 4of8

NCS000533
Table 1: Analytical Monitoring
Sample Date
Total
Flow
(MGD)
Precipitation
(in)
Duration
(hours)
pH
BOO
COD
TSS
NH3
TKN
NO3 + NO2
Total N
Lead
Formaldehyde
Hexamine
- Total P
6-9 su
30 mglL
120
mg/L
100
mg/L
7.2
mg/L
20 mglL
10 mglL
30 mg1L
0.03
mg/L
Benchmark.
0.5 mgIL
Benchmark:
25,000 mg/L
Benchmark:
2 mglL
Outfall 001
6/12/2007
0.083
0.91
0.67
6.3
12
87
49
4.2
6.5
5.8
12.3
0.012
0.366
<1.0
0,82
i
Outfall 002: Lab Weir
3/21/2006
0.023
0.83
0.48
7.53
,226 w 4,802
119 :
:; 137.
IV.146
2
148
0.01
14
235
4/312006
0.018
0.92
0.37
6.35
274r4r° : °563 ,'
91
136 ."
-.�>66 ..
3.9
69.9:,
0.007
1 ?Y
217
8/8/2006
0.052
1.42
1.1
7.07
48
r- i20'y1.0,v
27
1.1
28.1
0.004
0.085
3
11/16/2006
0,027
0.75
0.57
7.56
51 • � 245`•°'
49
304c
-'°38:1
1.3
39.4
0.003
,I,17 4 °'> ':
22.5
2/1/2007
0.048
6.08
1.02
7.44
,1629�:: 261ty'
93
7.7
1.8
49.5
0.005
'���;�1�13 2 >���
24.8
6/12/2007
0.043
0.67
0.91
6.5
a,760' 8730
162,-,,
290:
z .1954
1.3
'1955.3
0,009
0.17
Outfall 005: 5ilane Weir
3/21/2006
0.029
0.83
0.48
7.71
>- 86
447 4
'- 1 14 =
'a"s 41 <;;
4i°4fi•R}
1.1
47.1.
0.011
<13:, :: _
46
+
413/2006
0.022
0.92
0,37
5.96
;4`123
•t 64'
23
;;:` 23 ',,
�23> •
2.3
25.3
0.003
1 ;.:,
44
8/8/2006
0.065
1.42
1.1
6.58
' 52 t
1224.:;
38
20 _
0.6
20.6
0.005
0.05
2
11 /16/2006
0.034
0.75
0.57
5.48 " :°
24
54
13
9.1, .
10.1
1.7
11.8
<0.003
3.26
3.96
2/1/2007
0.061
6.08
1.02
8.6
16
60
28
9.09,
10.6
1.1
113
0.003
6.15 - ' -.
6.63
211 /2007
1 0.0611
6.08
1 1.02
1 8.6
16
71
26
9.24
9.42
3.7
13.1
0.004
7.07
4.51
0.18
6112/2007
0,054
0.67
0.91
6,46
9
68
4
1 6.3
1 6.3
1 2.3
1 11.8
1 0.007
1 3.89'
1 8.15
1 0.54
Over Current Benchmark
Data Not Collected
Page 5 of 8

NCS000533
Revised Permit Recommendations: Analytical Monitoring:
1. SOD, COD, TSS, Ammonia, TKN, Total Nitrogen, Formaldehyde and pH have been added to the permit because
they are potential pollutants and were above the benchmarks in the data submitted with the application.
Parameters in this permit include all chemicals reported by the applicant for the May 2009 sampling event,
except for lead.
• BOD and COD are appropriate for the various organic chemicals stored and used at the facility, and the
site as a while has had numerous instances of elevated levels in the stormwater discharge (Outfalls 002,
003, 004, 0:5, & 006).
• TSS is indicd_-:ve of housekeeping or other problems. TSS is also appropriate for a discharge to receiving
waters plagues with turbidity problems.
• Ammonia, TKN (organic nitrogen),.and Nitrate/Nitrite are above benchmarks in the submitted analysis
and are present with this industrial activity. Nitrate/Nitrite was not above in the submitted data but in
data from the Hexion file.
• Total Lead is not proposed in the monitoring scheme because levels were well below the 0.03 mg/I
benchmark, and it does not appear to be present in the materials here. Noted that there were very few
benchmark exceedances in data collected from other outfalls at this site between 2000-09.
Total Copper, zinc, and Manganese included because the potential pollutants and want to be consistent
with Hexion and Oak Bark.
• Hexamine and formaldehyde are included in the permit because they are potential pollutants. Samples
for formaldehyde are above benchmarks in the submitted analysis.
• pH is included because of its use as a general and immediate indicator of problems (especially with acid
storage at this facility), as well as its importance in interpreting other data such as metals.
• Total Petroleum Hydrocarbons (TPH) is included because several oils are stored af this site, and fork-lift
traffic may introduce such materials into the discharge. An alternative to just Oil and Grease (O&G), TPH
can be measured with the same method EPA has approved for O&G: Method 1664, but using Silica Gel
Treated N-Hexane Extractable Material (SGT-HEM) and an additional step that removes polar/fatty non -
petroleum base d material from the sample. This method is not compound -specific but is less costly, and
still provides an estimate of petroleum hydrocarbon concentration. This parameter is better targeted for
petroleum based materials than O&G, which can include animal -based fats and oils.
• Acute Toxicity has been included for this site due to concerns about multiple toxic sources as well as
onsite unknown chemical mixing and resultant unknown environmental toxicity. The ACUTE TOXICITY
APPENDIX A: -ACUTE TOXICITY TESTING FOR STORMWATER OUTFALLS has been include at the end of the
permit text. ($ cL +G C � rW0"> A-
�LoCwr+-
2. All analytical monitoring is quarterly during a representative storm event as defined in Part II Section B. This
frequency is higher than the standard semi-annual, but is consistent with proposed monitoring in draft
permits for the other manufacturers at this site (Flexion and Silar). The frequency is also appropriate given
DWQ's elevated concern about stormwater contamination from past activities. Because the retention pond
discharges more rarely, Oak -Bark will probably not see flow from its one outfall for many of those quarters.
3. Benchmarks for analytical monitoring are included with this draft permit. Exceedances of benchmark values
require the permittee to increase monitoring, increase management actions, increase record keeping, and/or
install stormwater Best Management Practices (BMPs) in a tiered program. If sampling results are above a
benchmark value, or outside of the benchmark range, for any parameter at any outfall then the facility should
follow the Tiered response guidelines.
4. The permittee is required to collect all of the analytical and qualitative monitoring samples during a
representative storm event as defined in Part II Section B. Qualitative monitoring is required to coincide.
5. The flow reporting requirement is not included, per DWQ revised strategy. Total rainfall is in the permit,
however, and can be used with impervious area information to estimate flow. Impervious area detail is
Page 6of8

r 'i
NCS000533
reouired to be documented in the permittee's SPPP.
6. Vehicle maintenance monitoring included, if ever applicable at this site (proposed quarterly to be consistent
with other monitoring, which would occur at the same outfall).
Discussions with permittee: Peter Yurgel/ Plant Manager, 91d-655-6980, 9/22/2009
1. Visual observations in the application describe the only outfalls as 002, 005, and 007 but the outfalls are listed
as 001, 002, and 005. Are these the same outfalls? Outfolls are 001, 002 and 005. 007 is on the Ock-Bark
Facility.
2. Outfall 007 drains to a small retention pond. Does the pond ever discharge? It is an Oak -Bork Facility.
3. The application says samples will be taken for pollutants from EPA Form 2F, tables 2F-2, 2F-3 and 2F-4. Have
those been forwarded to us yet? Samples for all these parameters have not been taken. Samples are taken for
parameters in the old Hexion permit. They are working with Linda Willis on this.
4. Do you have vehicle maintenance onsite? No.
5. What is your SIC code? 2869
Page 7 of 8

NCS000533
Recommendations: Based on the documents reviewed, the application information submitted on June 5, 2009
sufficient to issue an Individual Stormwater Permit.
Prepared by (Signature) 2 �� Date
Stormwater Permitting Unit Supery Date :�Mo
for radie lennett
Concurrence by Regional iceC�& �� bat % -:bo
RO Water Quality Supervisor_0/l Date
Regional Office Staff Comments (attach additional paf..,s as necessary)
.co�CJ ,_O 14
At
c�ltl� -Ak ems
Page 8 of 8

Rationale for Using Acute Toxicity as a 5tormwater Test Parameter for Permitting
r ,
NC DWQ Stormwater Permitting Unit
NC DWQ Regional Offices had inquired about adding an acute toxicity testing parameter to some
individual stormwater permits due to concerns about multiple toxic sources, onsite unknown chemical
mixing and resultant unknown environmental toxicity, and chemical sources that may not have an
appropriate benchmark available.
After speaking with DWQ central office staff, regional office staff, environmental laboratory staff, and
stormwater staff at other US states, DWQ SPU CO staff made the decision that adding acute toxicity may
be appropriate as a test parameter in some cases.
Rationale for Acute Toxicity Testing & Appropriateness of use:
• Other states such as CT, SC, MO, and CA are using Acute Toxicity Testing (usually Whole Effluent
Toxicity (WET) Tests) in stormwater individual (and some general) permits as a test parameter
and have found it to be useful parameter for a number of reasons (detailed below).
Some states (CT) have found that using Acute Toxicity is also a useful parameter to educate
permittees and the public on the concerns of contaminants on the impact on aquatic life. In
this way the permittee understands the correlation between release of contaminants and
aquatic toxicity more clearly rather than calling levels "bad."
• NC DWQ also believes it could be a useful parameter in cases where:
o DWQ cannot feasibly include all test parameters in a permit or ask the permittee to test
specific chemicals stored on site (because of financial concerns, large numbers of
parameters, or other concerns), even if we know what all the chemicals are;
o DWQ may not have benchmarks available for all parameters that may be discharged
from the site;
o DWQ may not be able to predict environmental effects from mixed chemicals or
chemicals produced by reactions when mixed that may be discharged from the site;
o DWQ may not be able to know all chemicals that may be discharged from the site or
these chemicals, or information about them, may be proprietary in nature;
o DWQ may be concerned that the toxicity of some parameters (such as copper or other
metals) may be difficult to predict due to variable environmental influences such as
hardness, pH, etc.
DWQ feels that the use of both a 48-hour pass/fail test and a 48-hour multi -dilution test is more
conservative and will provide more information.
a DWQ feels that although it is unlikely the organisms would be exposed to 100%
stormwater for more than 24 hours, organisms may be exposed to dilute stormwater for
longer than 24 hours. We feel that we would obtain more useful information using 48-
hour tests.
o After data are collected, if runoff is passing at 24 hours but is failing at 48 hours, the
permit can be reassessed to see if a 24-hour exposure better reflects exposure at that
particular site.
o Neither the NC acute pass/fail procedure nor the EPA multi -concentration procedure
requires that organism mortality be checked at 24 hours during a 48-hour test; however,
DWQ may easily request labs to perform this.

a
o As the NC DWQ toxicity testing relies.,on benchmark screening [for stormwater
discharges rather than a limit, use of a more conservative test with benchmarks does
not have the same impacts as a test with limits.
o EPA Region 6 (including TX) uses a 24-hour LCSO (multi -concentration) and Washington
state uses a 24-hour test (with Hyallelo, not Ceriodaphnia). However, SC, CT, NJ, and
MO all use a 48-hour test.
Method:
• Organism: Ceriodaphina dubio
• Frequency: Once per year testing is recommended.
• Dilution: Initial test is test of 100% stormwater effluent. Any subsequent follow up tests are
more specific multiple dilution tests. Both tests are 48-hour tests. See Acute toxicity permit
language Appendix A for more details.
• Control: Specified in the methods.
• Acute Test Type: See Acute toxicity permit language Appendix A for more details.

i
.-; A
ALIT,
�
NCDENR
North Carolina Department of'Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
May 27, 2010
Individual NPDES Stormwater Permit Renewal Transmittal Cover Page
To: Wilmington Regional Office, Linda Willis
Subject: NPDES Stormwater Permit No. NCS000533
Silar, LLC
Riegelwood, NC (Columbus County)
Attachment Description.
® Staff Report
®
Draft Permit
®
Renewal Application
Please provide comments on the facility, draft permit, and staff report and sign/return
if acceptable.
Return to Brian Lowther at the Central Office by June 28, 2010.
Brian Lowther
Division of Water Quality
Stormwater Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Wetlands and Stormwater Branch One
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 North Cc` rofi a
Location: 9-8 7 Salisbury St, Raleigh, North Carolina 27604 naturally
Phone: 919-$I)7-631]f)1 FAX: [phone] Customer Service: 1-$77-623-8748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer

1
r ,
AIM NC Certi&motion No. 402 Laboratory Report
SC Certification No. M12
NC Drfnidng Water Cert. No. 37735 11/16/09
c,m S.vin aayokal a e<ww�,u� sawtlau
United Technologies Carrier Project Name: Stormwater Discharge Client Sample ID: 001
Attn: Mike Lutz Project ID: Stormwater NCGO30452 Prism Sample ID: 261011
9701 Old Statesville Rd. Sample Matrix: Water COC Group: G1009488
Charlotte, NC 28269 Time Collected: 10/15/09 13:00
Time Submitted: 10/15/09 15:50
Parameter
Result
Units
Report MDL
Limit
Dilution
. Factor
Method
Analysis Analyst
Date/Time
Batch
ID
Sample Preparation:
1020 mL /
10 mL
608
10/22109 8:00 smard-h P25875
Surrogate
% Recovery Control Limits
?
i
\
Tetrachlom-m-xylens (TCMX) 75
40 - 134
D chforobiphenyl (DCB)
59
13 - 186
Puraeable Organics by GCIIVIS
1,1,1-Trichloroethane
BRL
mg/L
0.00 0.000
1
624
10/19/09 19:49 W"
045293
1,1,2,2-Tetmchloroethane
BRL
mg/L
0.0050 01
1
624
10/19M9 19:49 Wry
Q45293
1,1,2-Trichloroethene
BRL
mg&
0.0050 .00 8
1
624
10/19109 19:49 Mary
045293
1IJ-Dichloroethane
BRL
mg/L
0,005 0.00011
1
624
10/19/09 19:49 Wry
Q45293
1,1-Dichloroethene
BRL
mg/L
0.0 0.D0009
624
10/19/09 19.49 Wtry
045293
1,2-Dichiorobenzene
BRL
mg/L
0 50 0.0001
1
624
10/19/09 19:49 hwY
045293
1,2-Dlchloroethene
BRL
mg/L
.0050 0.00006
1
624
10/19/09 19:49 Wtry
Q45293
1,2-Dichloropropane
BRL
mg/L
0.0050 0.00012
1
4
10/19/09 19:49 Wry
Q45293
1,3-Dichlorobenzene
BRL
m
0.0050 0.00011
1
62
10/19/09 19.49 WtrY
Q45293
1,4-Dichlorobemzene
BRL
A-
0.0050 0.00011
1
624
10/19/09 19:49 Wiry
045293
2-Chleroethyl Vinyl Ether
BRL
g/L
0.010 0.00044
1
624
10/19/09 19:49 Wtry _
045293
Acrolein
BRL
mg !-
0.10 0.00086
1
624
10119109 19:49 Wry
Q45293
Acrylonitrife
BRL
mg/L
0.10 0,00073
1
624
10/19/09 19:49 Wtry
045293
Benzene
BRL
mg/L
0.0050 0.00007
1
024
10/19108 19.49 iwitry
045293
Bromodichloromethane
BRL
mg/L
0.0050 0.00008
1
624
10/19W 19:49 Wry
045293
Bromoform
BRL
mg/L
0.0050 0.00015
1
624
10/19/09 19:49 Wtry
Q45293
Bromomethane
BRL
mq&
0.010 0.00019
1
624
10/19/09 19:49 Wry
045293
Carbon Tetrachloride
BRL
mg1L
0.0050 0.00009
1
624
10/19/09 19:49 Wtry
045293
Chlorobenzene
BRL
mg&
O.OD50 0.0001
1
624
10/19/09 19:49 Wiry
045293
Chloroethane
BRL
mg&
0.010 0.00026
1
624
10/19/09 19:49 Wtry
045293
Chloroform
BRL
mgA-
0.0050 0.00006
1
624
10/19/09 19:49 Wry
C45293
This report should not be reproduced, except In its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-W015294M" - Fax: [phone] Page 2 of 7

NCS000533
STATE OF NORTH' CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
raffNIVAM
TO DISCHARGE STORMWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carol inaiGeneral Statute] 43-215.1, other lawful
standards and regulations promulgated and adopted by the,North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Silar,fLLC
is hereby authorized to -discharge stormwater from a facility located at
Silar, LLC
333 Neils Eddy Road
�\ Riegelwood, NC
Columbus County
to receiving waters designated as Livingston Creek (Broadwater Lake), a class C; Sw stream in
the Cape Fear River Basin, in accordance with the discharge limitations, monitoring
requirements, and other conditions set forth in Parts 1, II, III, IV, V and VI hereof.
Note: Draft Permit Dates are Approximate
This permit shall become effective September 1, 2010.
This permit and the authorization to discharge shall expire at midnight on August 31, 2015.
Signed this day August 20, 2010.
. for Coleen H. Sullins Director
Division of Water Quality
By the Authority of the Environmental Management Commission

Permit No. NCS000533
TABLE OF CONTENTS
PART I INTRODUCTION
Section A: Individual Permit Coverage
Section B: Permitted Activities
Section C: Location Map
f !/
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED
DISCHARGES��`�
Section A: Stormwater Pollution Prevention Plan\
Section B: Analytical Monitoring Requirements:. k�
/i ,
Section C: Qualitative Monitoring Requirementsr;
Section D: On -Site Vehicle -Maintenance Monitoring Requirements
PART III STANDARD CONDITIONS, FOR NPDES STORMWATER INDIVIDUAL
PERMITS
Section A: Compliance and Liability
1. Compliance Schedule
2. Duty to Comply
3. Duty to Mitigate
4. Civil and Criminal Liability
5. Oil and Hazardous Substance Liability
6. Property Rights
7. Severability
S. Duty to Provide Information
9. Penalties for Tampering
10. Penalties for Falsification of Reports
Section B: General Conditions
I . Individual Permit Expiration
2. Transfers
3. Signatory Requirements
0

Permit No. NCS000533
4. Individual Permit Modification, Revocation and Reissuance, or
Termination
5. Permit Actions
Section C: Operation and Maintenance of Pollution Controls
1. Proper Operation and Maintenance
2. Need to Halt or Reduce Not a Defense
3. Bypassing of Stormwater Control Facilities
Section D: Monitoring and Records z-
1.
Representative Sampling
2.
Recording Results �
3.
Flow Measurements
4.
Test Procedures
5.
Representative Outfall
6.
Records Retention/'
7.
Inspection
, and,Entry�
Section E: Reporting
Requirernents -
l .
Discharge Monitoring ro ing Reports
2.
Submitting,Reports --
3.
Availability of Reports
4.
Non-Stormwater Discharges
5,
Planned Changes
6.
Anticipated Noncompliance
7.
Spills
S.
Bypass
9.
Twenty-four Hour Reporting
10,
Other Noncompliance
11.
Other Information
PART IV LIMITATIONS REOPENER
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI DEFINITIONS
ii

Permit No. NCS000533.
PART I INTRODUCTION
SECTION A: INDIVIDUAL PERMIT COVERAGE
During the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge stormwater associated with industrial activity. Such
discharges shall•be controlled, limited and, monitored as specified in this permit.
If industrial materials and activities are not exposed to precipitation or runoff as described in 40
CFR § 122.26(g), the facility may qualify for a;.No Exposure Exclusion from NPDES stormwater
discharge permit requirements. Any owner or operator wishing.to' obtain a No Exposure
Certification must submit a No Exposure Certification"NOI form to the.Division; must receive
approval-bythe Division; must maintain no exposure 'conditions unless authorized to discharge
under a'vaiid NPDES stor-iwater permit; and must reapply for the No Exposure Exclusion once
every five (5) years.
SECTION B: PERMITTED ACTIVITIES off 1,r
Until this pen -nit expires or is moditied'or'revoked, the penmittee is authorized to discharge
stormwater to the surface waters of Nostorm sewer Carolina or separate storsewer system that has been
adequately treated and managed in"accordance with the terms and conditions of this individual
permit. All stormwater discharges shall be in accordance with the conditions of this permit.
f
�r !
Any -other point source discharge to surface waters of the state is prohibited unless it is an
allowable..non-stormwater discharge or is co .eyed by another pen -nit, authorization, or approval.
The stormwater discharges allowed by this individual permit shall not cause or contribute to
violations of Water Quality Standards.
This permit does not relieve the permittee from responsibility for compliance with any other
applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or decree.
Part [ Page 1 of 2

, SECTION C:' LOCATION MAP
Permit No. NCS000533
• 5 _._.rr ` I _ S t� •-� ` - -`,.� h' _ /�v.��l _ �•il ^. �t/y����' t t � :.terry
_i...._._-. --- _ f_ . .r �a - __ �.:-_, f�., f r.•' F'. Ci005t[f�C�t�.
L`• l 't ,t ."�''tf;.•'.f; �hcun"ss Y%1.�.,.._-�..`:'r•4`•.S`;; ,.......-..ifs_:-i,y J_..._...j J...=k.
v •ten-' v ! :� '%r ' Waste PNVJ
� ,. '.v- } .yj .;1r � .r •:%f
y • �',r'1 •r •`y�l i'� d �, },_:. - •� !c`. _:.
•;�. rrr t rrr �� F ��\ � ;F '� w - �.j' � s t `'!" �r � tY�ti i• � ',�'ti•� 'q
erA '4 riY (r fA !•'' `'N, ! �`- .... "4� - JJ rii �� r+`• •1s
-.� yl-.r _ �� .-�. s.r+= •� [ rF .r7.:r ."k. f;I .} ;. fit,, '' <.� , -- 1--Lcrr.-� in.F4w'
Part " !o }�x-7 •� •:' =+�.i • � CorA •
'! �� -r` �• / I i a ivv; ,�{~'wit .v ��' l�;�.- � t�t' f, •' Ild l3� t •� -
f�•
,r �•i/LFir. •/ t � i s } _ ! �� ��� v,- ,a i J 'iE•E�L'i •I
"'� - .� I l �. { tee.•. `.. I! •i�.. Ifr �iy' r + • l
'\ <r_�,� �y _�• t'`\ 1 �jJ .i -..p�4 11 f!!r� I. `r/•
_ �`����� f•. �� .-.Ft. S ��':.,'�v�. o• i. f \' >.�+�' v'"_ ._J v • if rl! }
`,^. s ,•`•i •r r'tSM.4A_p is '' { f`c .Y,.•.; r f• r�-•)� �
-it ° �.t. \. , 1 rim•. �• '� r "Sti\�". v 1-1
`�'
\•r .Yr ,, .1 ,} _ � --3 r ✓f,• i •}�}��� �' �. c / '1 F`'• �tih. :r� fr,--..1 t_.' - _ 1
[ f,iz -lTy rr f f #ti\."`•.
eJL� "x_.
Vt��`�.: ref T`t_ - y�� 4 F r7! �t �\�.� �+}r it3lt.r.. �:�,_ `a11�, '+�-k°.:•- 1 %� � •• -_ '•♦
_ j F � +i"•-. t.� � `� fr1! � • !� r r+� y . `- r S 'lj�"_�i; r ' "._� ' F+E
t .t,., <.s�; I {-�, r"'+...lv .� ! __r� `�'` -�• ' •``M1:•, �"=a
::�.-] ■, a� 'ter' ^ - • • JI•��Z� �''; r !C-�'._ - ..— ..�_� .._-�.- ,(Cu,� � �_- : �
::4 i zS` Ortwi. .v
��,r't a--rryf(I�jr -!`�j ���W=���•i•-'.." ,'"�LTi�,•'•/� �`[3ft� ��,:�r
� t�3•^-r� �" _ ' Sd, � . .j.:• i ♦ ff 1 � y; J.=�-_ � •. I1:f� �. fJf•;�t., foti
jai ;j
- ,6►s' >rri�� � /y.- �,��+� ��T� =�,i JJ •'•' .,l--, .�,1�:1 �r�.!`"�' '•{ `!:�`/
;!"t%Q.il:g,i ! DV'( f!>• vv r 1;•� v J .� �'`!'{ -`" ({ r� /
J 7.5' - r4•ljd
-^'- --!'+•a`„rr !, t �.•
1
NCS000533
Il
Man Scale 1.-24,000
Sitar LLC
Latitude: 34° 19' 43" N
Longitude: 780 12' 5" W
County: Columbus
Receiving Stream: Liringstcn Creek
Stream Class: C; Sw
Sub -basin: 03-06-17 (Cape Fear River Basin)
Facility Location
Part I Page 2 of

Permit No. NCS000533 ,
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
SECTION A: STORMWATER POLLUTION PREVENTION PLAN
The Permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to as
the Plan: This Plan shall be considered public information in accordance with Part III, Standard
i
Conditions, Section E, Paragraph 3 of this individual permit. The Plan shall include, at a
minimum, the following items:
1. Site Plana The site plan shall p-iovide a description of the physical facility and the
potential pollutant sources which may be expected to contribute to contamination of
stormwater discharges. The site plan shall contain Vie;following:
(a) A general location map (USGS quadrangle, -map or appropriately drafted
equivalent map), showing the facility's'location in relation to transportation routes
and surface waters, the name of the receiving.water(s) to which the stormwater
outfall(s) discharges, or if the discharge is to a municipal separate storm sewer
system, the name of the municipality and the ultimate receiving waters, and
accurate latitude and longitude of the;point(s) of discharge. The general location
map (or alternatively the site map) -shall identify whether each receiving water is
impaired (on the siate's'303(d)'.list of impaired waters) or is located in a
watershed for which'a TMDL has been established, and what the-parameter(s)
of concern are. f` ;
(b) A narrative description_ of storage practices, loading and unloading activities,
outdoor process areas, dust or particulate generating or control processes, and
waste disposal practices. A narrative description of the potential pollutants which
could be expected to be present in the stormwater discharge from each outfall.
(c) A site map drawn to scale (including a distance legend) showing: the site property
boundary, the stormwater discharge outfalls, all on -site and adjacent surface
waters and wetlands, industrial activity areas (including storage of materials,
disposal areas, process areas, loading and unloading areas, and haul roads), site
topography, all drainage features and structures, drainage areas for each outfall,
direction of flow in each drainage area, industrial activities occurring in each
drainage area, buildings, existing BMPs, and impervious surfaces. The site map
must indicate the percentage of each drainage area that is impervious.
(d) A list of significant spills or leaks of pollutants that have occurred at the facility
during the three (3) previous years and any corrective actions taken to mitigate
spill impacts.
(e) Certification that the stormwater outfalls have been evaluated for the presence of
non-storrrtwater discharges. The certification statement will be signed in
accordance with the requirements found in Part 11I, Standard Conditions, Section
Part 11 Page 1 of 10

Permit No. NCS000533
B, Paragraph 5. The permittee shall re -certify annually that the stormwater
outfalls have been evaluated for the presence of non-stormwater discharges.
2. Stormwater Management Plan. The stormwater management plan shall contain a
narrative description of the materials management practices employed which control or
minimize the exposure of significant materials to stormwater, including structural and
nonstructural measures. The stormwater management plan, at a minimum, shall
incorporate the following:
(a) Feasibility Study. A review of the technical and economic feasibility of changing
the methods of operations and/or storage practices to eliminate or reduce exposure
of materials and processes to stormwater..- Wherever practical, the permittee shall
prevent exposure of all'storage areas, material handling operations, and
manufacturing or fueling operations. In'areas where elimination of exposure is
not practical, the stormwater management plan shall document the feasibility of
diverting the stormwater runoff away from areas of potential contamination.
(b) Secondary Containment Requireme_nts'and Records. Secondary containment is
required for: bulk storage of ligtiid�materials; storage in.any amount of Section
313 of Title IIl of the Superfund Amendments and Reauthorization Act (SARA)
water priority chemicals; and storage•in/any amount of hazardous substances, in
order to prevent leaks and spills from/contaminating stormwater runoff. A table
or summary of ali'such tanks and stored materials and their associated secondary
containment areas -shall be maintained. If the secondary containment devices are
connected to stor�rrnwate' conveyance systems, the connection shall be controlled
by manually activated valves or other similar devices (which shall be secured
closed with allocking mechanism), and any stormwater that accumulates in the
containment area shall be at a minimum visually observed for color, foam, outfall
staining, visible sheens and dry weather flow, prior to release of the accumulated
stormwater. Accumulated stormwater shall be released if found to be
uncontaminated by any material. Records documenting the individual making the
observation, the description of the accumulated storrnwater, and the date and time
of the release shall be kept for a period of five years.
(c) BMP Summary. A listing of site structural and non-structural Best Management
Practices (BMP) shall be provided. ' The installation and implementation of BMPs
shall be based on the assessment of the potential for sources to contribute
significant quantities of pollutants to stormwater discharges and data collected
through monitoring of stormwater discharges. The BMP Summary shall include a
written record of the specific rationale for installation and implementation of the
selected site BMPs. The BMP Summary shall be reviewed and updated annually.
3. Spill Prevention and Response Plan. The Spill Prevention and Response Plan (SPRP)
shall incorporate an assessment of potential pollutant sources based on a materials
inventory of the facility. Facility personnel (or the team) responsible for implementing the
SPRP shall be identified in a written list incorporated into the SPRP and signed and dated
by each individual acknowledging their responsibilities for the plan. A responsible
Part II Page 2 of 10

Permit No. NCS000533 ,
person shall be on -site at all times during facility operations that have the potential to
contaminate stormwater runoff through spills or exposure of materials associated with the
facility operations. The SPRP must be site stormwater specific. Therefore, an oil Spill
Prevention Control and Countermeasure plan (SPCC) may be a component of the SPRP,
but may not be sufficient to completely address the stormwater aspects of the SPRP. The
common elements of the SPCC with the SPRP may be incorporated by reference into the
SPRP.
4. Preventative Maintenance and Good Housekeeping Program. A preventative
maintenance and good housekeeping program shall be developed. The program shall list
all Stormwater control systems, stormwater discharge outfalls, all on -site and adjacent
surface waters and wetlands, industrial activity areas (including material storage areas,
material handling areas, disposal areas, process areas; loading and unloading areas, and
haul roads), all drainage features and structures; and -existing structural BMPs. The
program shall establish schedules of inspections, maintenance and housekeeping
activities of stormwater control systems, as well as facility equipment, facility areas, and
facility systems that present a potential for stoririwater exposure or stormwater pollution.
Inspection of material handling areas and regular cleaning schedules of these areas shall
be incorporated into the program. Timely compliance with the established schedules for
inspections, maintenance, and housekeeping shall be recorded in writing -and maintained
in the SPPP.
5. Employee Training. Training programs shall be developed and training provided at a
minimum on an annual basis for facility personnel with responsibilities for: spill response
and cleanup, preventative maintenance activities, and for any of the facility's operations
that have the potential to contaminate stormwater runoff. Facility personnel (or team)
responsible for implementing�the training shall be identified, and theif annual training
shall be documented by the"signature of each employee trained.
6. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a specific
position(s) responsible for the overall coordination, development, implementation, and
revision to the Plan. Responsibilities for all components of the Plan shall be documented
and position assignments provided.
7. Plan Amendment. The permittee shall amend the Plan whenever there is a change in
design, construction, operation, or maintenance which has a significant effect on the
potential for the discharge of pollutants to surface waters. All aspects of the
Stormwater Pollution Prevention Plan shall be reviewed and updated on an annual
basis. The annual update shall include an updated list of significant spills or leaks of
pollutants for the previous three years, or the notation that no spills have occurred. The
annual update shall include written re -certification that the stormwater outfalls have been
evaluated for the presence of non-stormwater discharges. Each annual update shall
include a documented re-evaluation of the effectiveness of the BMPs listed in the BMP
Summary of the Stormwater Management Plan.
The Director may notify the pennittee when the Plan does not meet one or more of the
minimum requirements of the permit. Within 30 days of such notice, the permittee shall
Part 11 Page 3 of 10

Permit No. NCS000533
submit a time schedule to the Director for modifying the Plan to meet minimum
requirements. The permittee shall pr6vide certification in writing (in accordance with
Part III, Standard Conditions, Section B, Paragraph 5) to the Director that the changes
have been made.
8. Facility Inspections. Inspections of the facility and all stormwater systems shall occur as
part of the Preventative Maintenance and Good Housekeeping Program at a minimum on
a semi-annual schedule, once during the first half of the year (January to June), and once
during the second half (July to December), with at least 60 days separating inspection
dates (unless performed more frequently than semi-annually). These facility inspections
are different from, and in addiiion to, the stonnwater discharge characteristic monitoring
required in Part II B and C of this permit.
9. Implementation. The permittee shall impleinent'the Plan: Implementation of the Plan
shall include documentation of all monitoring, measurements,; inspections, maintenance
activities, and training provided to employees; including the'log of the sampling data and
of actions taken to implement BMPs associated with the industrial activities, including
vehicle maintenance activities. Such, documentation shall be kept on -site for a period of
five years and made available to the Director or theDirector's authorized representative
immediately upon request. 'f
1
Part 11 Page 4 of 10

Permit No. NCS000533 ,
SECTION B: ANALYTICAL MONITORING REQUIREMENTS
Analytical monitoring of stormwater discharges shall be perfonned as specified in Table 1. All
analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of 20 analytical samplings being conducted over the term of
the permit at each stormwater discharge outfall (SDO).
A representative storm event is a storm event that measures greater than 0.1 inches of rainfall. The time
between this storm event at c, the previous storm event measuring greater than 0.1 inches must be at least
72 hours. A single storm event may have a period of no precipitation of up to 10 hours. For example, if
it rains but stops before producing.any collectable discharge, a sample may be collected if the next rain
uroducin2 a discharge begins wiinin 10 hours.
i,
Table 1. Analytical Monitorinp, Requirements
Discharge
Characteristics
Units
Measurement
Fre uenc 1
Sample
Type2.
Sample
Location3
Total Suspended Solids (TSS)
mg/L <
' quarterly
Grab
SDO
Biochemical Oxygen Demand (BODO
mg/L--�.
`� quarterly
Grab
SDO
Chemical Oxygen Demand (COD)
t WL,,'/
'quarterly
Grab
SDO
Ammonia as Nitrogen (NH3-N)
�:'m "L- !
quarterly
Grab
SDO
Total Kjeldahl Nitrogen (TKN)/�,, ``
mg/L
quarterly
Grab
SDO
Nitrate + Nitrite Nitro Ten -="
`Mg L
quarterly
Grab
SDO
Total Petroleum Hydrocarbons�(TPH)
[EPA Method 1664 (SGT-HEM)]
m 1
quarterly
Grab
SDO
Hexamine �-- ~"
mg/L
quarterly
Grab
SDO
Formaldehyde
mg/L
quarterly
Grab
SDO
Copper, Total Recoverable
m L
quarterly
Grab
SDO
Zinc, Total Recoverable
mg/L
quarterly
Grab
SDO
Manganese, Total Recoverable
mg/L
quarterly
Grab
SDO
H
standard
quarterly
Grab
SDO
Acute Toxicity,_
Annually
Grab
SDO
Total Rainfal14
inches
quarterly
Rain Gauge
I-
Footnotes:
I Measurement Frequency: Four times per year during a representative storm event.
2 Grab samples shall be collected within the first 30 minutes of discharge.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless representative outfall
status has been granted.
4 For each sampled representative storm event the total precipitation must be recorded. An on -site rain gauge or local rain
gauge reading must be recorded.
5 Acute toxicity shall be performed in accordance with Appendix A: Special Conditions at the end of this permit.
Part I Page 5 of 10

Permit No. NCS000533
The permittee shall complete the minimum 20 analytical samplings in accordance with the
schedule specified below in Table 2. A minimum of 30 days must separate Period 1 and
Period 2 sample dates unless monthly monitoring has been instituted under a Tier Two
response.
Table 2. Monitoring Schedule
Monitoring period1'2
Start
End
All Years — Quarter 1
January 1
"March 31
All Years — Quarter 2
April 1
- June 30.,
All Years — Quarter 3
July 1
September 30�,
All Years — Quarter 4
October 1
December 31
Footnotes: \
1 Maintain quarterly monitoring during permit renewal process. If at the expiration of this permit, the
permittee has submitted an application for renewal of coverage before the submittal deadline, the permittee
will be considered for renewed coverage. Quarterly -monitoring shall be done all years of the permit and the
applicant must continue quarterly monitoring until the renewed permit is issued.
2 If no discharge occurs during the sampling peridd,'the permittee must submit a monitoring report indicating
"No Flow"' within 30 days of the end of the three-month sampling period.
The permittee shall report the analytical results from the first sample with valid results within the
monitoring period. The permittee shall,compare monitoring results to the benchmark values in
Table 3. The benchmark values in Table 3 are not permit limits but should be used as guidelines for
the permittee's Stormwater Pollu#ion"Prevention Plan (SPPP). Exceedences of benchmark values
require the permittee to increase_ monitoring, increase management actions, increase record keeping,
and/or install stormwater Best Management Practices (BMPs) in a tiered program. See below the
descriptions of Tier One and Tier Two,
Part II Page 6 of 10

Permit No. NCS000533 ,
Table 3. Benchmark Values for Analvtical Monitoring
Discharge Characteristics
Units
Benchmark
Total Suspended Solids (TSS)
mg/L
100
Biochemical Oxygen Demand (BODO
mg/L
30
Chemical Oxygen Demand (COD)
mg/L
120
Ammonia as Nitrogen (NH3-N)
mg/L
7.2
Total Kjeldahl Nitrogen (TKN)
mg/L
20
nitrate + Nitrite Nitrogen
mg/L
10
Total Petroleum Hydrocarbons (TPH)
'
[EPA Method 1664 (SGT-HEM)]
mg/L
15
Hexamine
mg/L
25,000
Formaldehyde
mvL ~>
0.5
Copper, Total Recoverable
mg/L i°
0.007
Zinc, Total Recoverable
r ,' `..mgf L
0.067
^
Manganese, Total Recoverable �., ' ,
mg/L
NIA
.
PH
r standard
6-9
Acute Toxicity
'�` ����
See Appendix A:
See Appendix A:
�1t
Special Conditions
Special Conditions
Tier One
If: The first valid sampling results are above a benchmark value, or outside of the benchmark range, for any
parameter at any out fall;
Then: The permittee shall:
1. Conduct a stormwater management inspection of the facility within two weeks of receiving
sampling results.
2. Identify and evaluate possible causes of the benchmark value exceedence.
3. Identify potential and select the specific: source controls, operational controls, or physical
improvements to reduce concentrations of the parameters of concern, or to bring concentrations
within the benchmark range.
4. Implement the selected actions within two months of the inspection.
5. Record each instance of a Tier One response in the Stormwater Pollution Prevention Plan. Include
the date and value of the benchmark exceedence, the inspection date, the personnel conducting the
inspection, the selected actions, and the date the selected actions were implemented,
Part II Page 7 of 10

Permit No. NCS000533
Tier Two
If: During the term of this permit, the first valid sampling results from three consecutive monitoring periods
are above the benchmark values, or outside of the benchmark range, for any specific parameter at a
fic discharge outfall:
Then: The permittee shall:
l . Repeat all the required actions outlined above in Tier One.
2. Immediately institute -monthly monitoring for all parameters at every outfall where a sampling result
exceeded the benchmark value for two consecutive samples. Monthly (analytical and qualitative)
monitoring shall continue until three consecutive sample results are below the benchmark values or
within the benchmark range.
3. If no discharge occurs during the sampling period, the permittee is required to submit a monthly
I I
monitoring report indicating "No Flow" to comply with reporting requirements.
4. Maintain a record of the Tier Two response in the Storinwater Pollution Prevention Plan.
Tier Three
During the term of this permit, if the valid sampling reslts rreq re for the permit monitoring periods
exceed the benchmarlC value, or are outside the Ebench�mark range, for any specific parameter at any specific
outfall on four occasions, the permittee shall notifyrthe DWQ Regional Office Supervisor in writing within
30 days of receipt of the fourth analytical. results DWQ may but is not limited to:
s �u
• require that the permittee revise, increase, or decrease the monitoring frequency for the remainder
of the permit;
• require the permittee to conduct acute toxicity testing on discharges;
• require the permittee to install- structural stormwater controls;
• require the permittee to implement other stormwater control measures; or
• require that the permittee implement site modifications to qualify for the No Exposure Exclusion.
This site discharges to impaired waters experiencing problems with turbidity. If a Total
Maximum Daily Load (TMDL) is approved for this segment of Livingston Creek, the permittee
may be required. to monitor for the pollutant(s) of concern in the future and submit results to the
Division of Water Quality. The Division will consider the monitoring results in determining
whether additional BMPs are needed to control the pollutant(s) of concern to the maximum
extent practicable.
If additional BMPs are needed to achieve the required level of control, the permittee will be
required to (1) develop a strategy for implementing appropriate BMPs, and (2) submit a timetable
for incorporation of those BMPs into the permitted Stormwater Pollution Prevention Plan.
Part It Page 8 of 10

Permit No. NCS000533 .
SECTION C: QUALITATIVE MONITORING REQUIREMENTS
Qualitative monitoring requires a visual inspection of each stormwater outfall regardless of
representative outfall status and shall be performed as specified in Table 4, during the analytical
monitoring event. [If analytical monitoring is not required, the permittee still must conduct
quarterly qualitative monitoring.] Qualitative monitoring is for the purpose of evaluating the
effectiveness of the Stormwater Polltition Prevention PIan (SPPP) and assessing new sources of
stormwater pollution.
In the event an atypical condition is noted -at a stormwater discharge outfall, the permittee shall
document the suspected cause of the condition and any actions taken in response to the
discovery. This documentation will be maintained with the SPPP.
Table 4. Qualitative Monitoring Requirements
Discharge Characteristics
Frequency]
Monitoring
Location2
Color
quarterly'`SDO
Odor
quarterly' j
'` SDO
Clarity
,uarterl` 1
SDO
Floating Solids �,,
-,,quarterly
SDO
Suspended Solids
uarterl
SDO
Foam
'-. uarterly
SDO
Oil Sheen
quaqerly
SDO
Erosion or deposition at the outfall
quarterly
SDO
Other obvious indicators
quarterly
SDO
of stormwater pollution
Footnotes:
1 Measurement Frequency: Four times per year during a representative storm event, for each year until either
another permit is issued for this facility or until this permit is revoked or rescinded. If at the end of this
permitting cycle the permittee has submitted the appropriate paperwork for a renewal permit before the submittal
deadline, the permittee will be considered for renewed coverage. The applicant must continue quarterly
monitoring until the renewed permit is issued. See Table 2 for schedule of monitoring periods through the end of
this permitting cycle.
2 Monitoring Location. Qualitative monitoring shall be performed at each stormwater discharge outfall (SDO)
regardless of representative outfall status.
SECTION D: ON -SITE VEHICLE MAINTENANCE MONITORING REQUIREMENTS
Facilities which have any vehicle maintenance activity occurring on -site which uses more than 55
gallons of new motor oil per month when averaged over the calendar year shall perform
analytical monitoring as specified below in Table 5. This monitoring shall be performed at all
stormwater discharge outfalls which discharge stormwater runoff froth vehicle maintenance
Part 11 Page 9 of 10

Permit No. NCS000533
areas, and in accordance with the schedule presented in Table 2 (Section B). All analytical
monitoring shall be performed during a representative storm event.
Table 5. Analytical Monitoring Requirements for On -Site Vehicle Maintenance
Discharge Characteristics
Units
Measurement
Sample
Sample
Frequency]
Ty e2
Location3
H
standard
quarterly
Grab
SDO
Total Petroleum Hydrocarbons
mg/l
quarterly
Grab
SDO
EPA Method 1664 (SGT-HEM)
Total Suspended Solids
mquarterly
Grab
SDO'*-'
Total Rainfal14
inches
darter/'
Rain gauge
-
New Motor Oil Usage
gallons/month 1
f,-"quarterly
Estimate
-
Footnotes:
I Measurement Frequency: Four times per year during a representative storm event, for each year until either
another permit is issued for this facility or until this permit is revoked or rescinded. I f at the end of this
permitting cycle the permittee has submitted the appropriate paperwork for a renewal permit before the submittal
deadline, the permittee will be considered for renewed coverage.,The applicant must continue quarterly
monitoring until the renewed permit is issued. See Table 2`for schedule of monitoring periods through the end of
this permitting cycle.
2 If the stormwater runoff is controlled by a storm (vate detention pond a grab sample of the discharge from the
pond shall be collected within the first.30 minutedischarge from the pond.
3 Sample Location: Samples shall be collected at -each stormwater discharge outfall (SDO) that discharges
stormwater runoff from area(s) where vehicle maintenance activities occur.
' 4 For each sampled representative storm event the total precipitation must be recorded. An on -site or local rdin
gauge reading must be recorded:'
Monitoring results shall be compared to the benchmark values in Table 6. The benchmark
values in Table 6 are not permit limits but should be used as guidelines for the permittee's
Stormwater Pollution Prevention Plan (SPPP). Exceedences of benchmark values require the
permittee to increase monitoring, increase management actions, increase record keeping, and/or
install stormwater Best Management Practices (BMPs), as provided in Part I1 Section B.
Table 6. Benchmark Values for Vehicle Maintenance Analytical Monitoring
Discharge Characteristics
Units
Benchmark
PH
standard
6-9
Total Petroleum Hydrocarbons (TPH)
[EPA Method 1664 (SGT-HEM)]
mg/L
15
Total Suspended Solids (TSS)
mg/L
100
Part II Page 10 of 10

Permit No. NCS000533
PART III STANDARD CONDITIONS FOR NPDES STOR1 IWATER INDIVIDUAL PERMITS
SECTION A: COMPLIANCE AND LIABILITY
Compliance Schedule
The permittee shall comply with Limitations and Controls specified for stormwater discharges in
accordance with the following schedule: -
Existing Facilities already operating but applying for permit coverage for the first time: The Stormwater
Pollution Prevention Plan shall be developed and implemented within 12 months of the.effective date of the
initial permit and updated thereafter on an annual basis. Secondary containment, as spt :ified in Part I1,
Section A, -Paragraph 2(b) of this permit, shall be accomplished within,12 months cif the effective date of
the initial permit issuance.
New Facilities applying for coverage for the first time and existing•facilitiespreviously permitted and
applying for renewal under this permit: The Stormwater Pollution Prevention Plan shall be developed and
implemented prior to the beginning of discharges from the operation of the industrial activity and be
updated thereafter on an annual basis. Secondary containment, as specified in Part 11',Section A, Paragraph
2(b) of this permit shall be accomplished prior to the beginning of discharges from the operation of the
industrial activity. , ��`\. ?
Duty to Complv
The permittee must comply with all conditions of this individual permit. Any permit noncompliance
constitutes a violation of the Clean Water Act and is grounds for enforcement action; for permit
termination, revocation and reissuance, or modification; or denial of a permit upon renewal application.
.f
a. The permittee shall comply with standards or prohibitions established under section 307(a) of the
Clean Water Act for toxic pollutants within the time provided in the regulations that establish these
standards or prohibitions, even if the permit has not yet been modified to incorporate the
requirement.
b. The Clean Water Act provides that any person who violates a permit condition is subject to a civil
penalty not to exceed $25,000 per day for each violation. Any person who negligently violates any
permit condition is subject to criminal penalties of $2,500 to 25,000 per day of violation, or'
imprisonment for not more than 1 year, or both. Any person who knowingly violates permit
conditions is subject to criminal penalties of $5,000 to $50,000 per day of violation, or
imprisonment for not more than 3 years, or both. Also, any person who violates a permit condition
may be assessed an administrative penalty not to exceed $10,000 per violation with the maximum
amount not to exceed $125,000. [Ref. Section 309 of the Federal Act 33 USC 1319 and 40 CFR
122.41(a).]
Under state law, a daily civil penalty of not more than ten thousand dollars ($10,000) per violation
may be assessed against any person who violates or fails to act in accordance with the terms,
conditions, or requirements of a permit. [Ref: NC General Statutes 143-215.6A].
d. Any person may be assessed an administrative penalty by the Director for violating section 301,
302, 306, 307, 308, 318 or 405 of the Act, or any permit condition or limitation implementing any
of such sections in a permit issued under section 402 of the Act. Administrative penalties for Class
I violations are not to exceed $10,000 per violation, with the maximum amount of any Class I
penalty assessed not to exceed $25,000. Penalties for Class II violations are not to exceed
Part III Page I of 8

VV
Permit No. NCS000533
S 10,000 per day for each day during which the violation continues, with the maximum amount of
any Class II penalty not to exceed $125,000. '
Duty to Mitigate
The permittee shall take all reasonable steps to minimize or prevent any discharge in violation of this
individual permit which has a reasonable likelihood of adversely affecting human health or the environment.
4. Civil and Criminal Liability!'
Except as provided in Part 111, Section C of this permit regarding bypassing of stormwater control facilities,
nothing in this individual permit shall be construed to relieve the permittee from any responsibilities,
liabilities, -or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6A, 143-215.613, 143-
215.6C or Section 369 of the Federal Act, 33 USC 1319. Furthermore, the permittee is responsible for
consequential damages, such as fish kills, even though the responsibility for effective compliance may be
temporarily suspended.
5. Oil and Hazardous Substance Liatdity
Nothing in this individual permit shall be construed to preclude the institution of any legal action or relieve
the permittee from any responsibilities, liabilities, or penalties to which the permittee is or may be subject to
under NCGS 143-215.75-et seq. or Section 31 i.of the,Federal Act, 33 USC 1321.
6. Property Rights
The issuance of this individual permit does `nbt convey any property rights in either real or personal
property, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of
personal rights, nor any infrin ement`of Federal, State or local laws or regulations.
7. Severabilit
The provisions of this individual permit are severable, and if any provision of this individual permit, or the
application of any provision of this individual permit to any circumstances, is held invalid, the application
of such provision to other circumstances, and the remainder of this individual permit, shall not be affected
thereby.
8. Duty to Provide Information
The permittee shall furnish to the Director, within a reasonable time, any information which the Director
may request to determine whether cause exists for modifying, revoking and reissuing, or terminating the
permit issued pursuant to this individual permit or to determine compliance with this individual permit. The
permittee shall also furnish to the Director upon request, copies of records required to be kept by this
individual permit.
Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly renders inaccurate,
any monitoring device or method required to be maintained under this individual permit shall, upon
conviction, be punished by a fine of not more than $10,000 per violation, or by imprisonment for not more
than two years per violation, or by both. If a conviction of a person is for a violation committed after a first
conviction of such person under this paragraph, punishment is a,fine of not more that $20,000 per day of
violation, or by imprisonment of not more than 4 years, or both.
Part HI Page 2 of 8

Permit No. NCS000533
10. Penalties for falsification of Re orts
The Clean Water Act provides that any person who knowingly makes any false statement, representation; or
certification in any record or other document submitted or required to be maintained under this individual
permit, including monitoring reports or report~ of compliance or noncompliance shall, upon conviction, be
punished by a fine of not more than $10,000 per violation, or by imprisonment for not more than two years
per violation, or by both.
SECTION B: GENERAL CON"OITIONS
Individual Permit Expiration .
The permittee is not authn; ized to discharge after the expiration date. In order to receive automatic
authorization to discharge beyond the expiration date, the permittee;shall submit forms and fees as are
required by the agency authorized to issue permits no laterthan,380 days prior to the expiration date. Any
permittee that has not requested renewal at least 180 days prior to expiration, or any permittee that does not
have a permit after the expiration and has not requested renewal at least-180 days prior to expiration, will be
subjected to enforcement procedures as provided in NCGS § 143-2153.6 and 33 USC 1251 et. seq.
Transfers
This permit is not transferable to any person except after notice to and approval by the Director. The
Director may require modification or revocation -and reissuance of the permit to change the name and
incorporate such other requireme'rits as may be necessary under the Clean Water Act. The Permittee is
required to notify the Division in visiting in the event the permitted facility is sold or closed.
Signatory Requirements
All applications, reports,.6r information submitted to the Director shall be signed and certified.
a. All applications to be covered under this individual permit shall be signed as follows:
(1) In the case of a corporation: by a principal executive officer of at least the level of vice-
president, or his duly authorized representative, if such representative is responsible for
the overall operation of the facility from which the discharge described in the permit
application form originates;
(2) In the case of a partnership or limited partnership: by a general partner;
(3) In the case of a sole proprietorship: by the proprietor;
(4) In the case of a municipal, state, or other public entity: by a principal executive officer,
ranking elected official, or other duly authorized employee.
b. All reports required by the individual permit and other information requested by the Director shall
be signed by a person described above or by a duly authorized representative of that person. A
person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the
overall operation of the regulated facility or activity, such as the position of plant
manager, operator of a well or well field, superintendent, a position of equivalent
Part III Page 3 of 8

4W r
Permit No. NCS000533
responsibility, or an individual or position having overall responsibility for environmental
matters for the company. (A'duly autltorized representative may thus be either a named
individual or any individual occupying a named position.); and
(3) The written authorization is submitted to the Director.
Any person signing a document under paragraphs a. or b. of this section shall make the following
certification:
"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 forgathering 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 fo`r�knowing violations."
4. Individual Permit Modification. Revocation and Reissuarice: or Termination
The issuance of this individual permit does not prohibit the Director from reopening and modifying the
individual permit, revoking and reissuing the individual permit, or terminating the individual permit as
allowed by the laws, rules, and regulations contained din Title 40, Code of Federal Regulations, Parts 122
and 123; Title 15A of the North Carolina A l' inistr'ative�Code, Subchapter 2H .0100; and North Carolina
General Statute 143-215.1 et al.
n
5. Permit Actions.
The permit may be modified; revoked and'reissued, or terminated for cause. The notification of planned
changes or anticipated noncompliance does not stay any individual permit condition.
r
SECTION C: OPERATION AND MAINTENANCE OF POLLUTION CONTROLS
Proner Operation and Maintenance
The permittee shall at all times properly operate and maintain all facilities and systems of treatment and
control (and related appurtenances) which are installed or used by the permittee to achieve compliance with
the conditions of this individual permit. Proper operation and maintenance also includes adequate
laboratory controls and appropriate quality assurance procedures. This provision requires the operation of
back-up or auxiliary facilities or similar systems which are installed by a permittee only when the operation
is necessary to achieve compliance with the conditions of this individual permit.
Need to Halt or Reduce Not a Defense
It shall not be a defense for a permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this individual permit.
Bypassing of Stonnwater Control Facilities
Bypass is prohibited and the Director may take enforcement action against a permittee for bypass unless
a. Bypass was unavoidable to prevent loss of life, personal injury or severe property damage: and
Part III Page 4 of 8

Permit No. NCS000533
There were no feasible alternatives to the bypass, such as the use of auxiliary control facilities,
retention of stormwater or maintenance during normal periods of equipment downtime or dry
weather. This condition is not satisfied if adequate backup controls should have been installed in
the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal
periods of equipment downtime or preventive maintenance; and
C. The permittee submitted notices,as required under, Part III, Section E of this permit.
If the Director determines that it will meet the three conditions listed above', the. Director may approve an
anticipated bypass after considering its adverse effects. ',
SECTION D: MONITORING AND RECORDS
1. Representative Sampling
Samples collected and measurements taken, as required herein; shall be characteristic of the volume and
nature of the permitted discharge. Analytical sampling shall be performed during a representative storm
event. Samples shall be taken on a day and time that is characteristic of the discharge. All samples shall be
taken before the discharge joins or is diluted by any other waste stream, body'of water, or substance.
Monitoring points as specified in this permit shall not be' changed withournotification to and approval of
the Director. 'ram
2. Recording Results
For each measurement, sample, inspection or maintenance activity performed or collected pursuant to the
requirements of this individual permit,'the permittee shall record the following information:
\t 7
a. The date, exact place, and time of sampling, measurements, inspecti:in-=,r maintenance activity;
b. The individual(s) who performed the sampling, measurements, inspection or maintenance activity;
c. The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
Flow Measurements
Where required, appropriate flow measurement devices and methods consistent with accepted scientific
practices shall be selected and used to ensure the accuracy and reliability of measurements of the volume of
monitored discharges.
Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations published pursuant to
NCGS 143-215.63 et. seq, the Water and Air Quality Reporting Acts, and to regulations published pursuant
to Section 304(g), 33 USC.1314, of the Federal Water Pollution Control Act, as Amended, and Regulation
40 CFR 136.
PartIII Page 5 of 8

Permit No. NCS000533
To meet the -intent of the monitoringrequired by this individual permit, all test procedures must produce
minimum detection and reporting levels and all data generated must be reported down to the minimum
detection or lower reporting level of the procedure.
Representative Outfall
If a facility has multiple discharge locations with substantially identical stormwater discharges that are
required to be sampled, the permittee may petition the Director for representative outfall status. If it is
established that the`stormwater discharges are substantially identical and the permittee is granted
representative outfall status, then sampling requirements may be performed at a reduced number of outfalls.
6. Records Retention
Visual monitoring shall be documented and records maintained at the.,facility along with the Stormwater
Pollution Prevention Plan. Copies of analytical monitoring results shall also be maintained on -site. The
permittee shall retain records of all monitoring information; including all calibration and maintenance
records and all original strip chart recordings for continuous monitoring instrumentation, and copies of all
reports required by this individual permit for a period of at least 5 years from the date of the sample,
measurement, report or application. This period may be extended by request of the Director at any time.
7. Inspection and Entry
The permittee shall allow the Director or an authorized representative (including an authorized contractor
acting as a representative of the Director),.or in the case of a facility which discharges through a municipal
separate storm sewer system,,an authorized representative of a municipal operator or the separate storm
sewer system receiving the discharge, upon the.presentation of credentials and other documents as may be
required by law, to;
41a. Enter upon.the-pennittepremises where a regulated facility or activity is located or conducted,
or where records must under the conditions of this individual permit;
b. Have access to and copy, at reasonable times, any records that must be kept under the conditions of
this individual permit;
C. Inspect at reasonable times any facilities, equipment (including monitoring and control equipment),
practices, or operations regulated or required under this individual permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring individual permit compliance
or as otherwise authorized by the Clean Water Act, any substances or parameters at any location.
SECTION E: REPORTING REQUIREMENTS
Discharge Monitoring Reports
Samples analyzed in accordance with the terms of this permit shall be submitted to the Division on
Discharge Monitoring Report forms provided by the Director. Submittals shall be delivered to the Division
no later than 30 days from the date the facility receives the sampling results from the laboratory.
The permittee shall submit an Annual Summary Data Monitoring Report to the appropriate DWQ Regional
Office in February of each year. The submittal shall be on forms supplied by the Division.
Part III Page 6 of 8

Permit No. NCS000533 ,
When no discharge has occurred from the facility during the report period, the permittee is required to
submit a discharge monitoring report, within 30 days of the end of the three-month sampling period, giving
all required information and indicating "NO FLOW" as per NCAC T 15A 02B .0506.
The permittee shall record the required qualitative monitoring observations on the SDO Qualitative
Monitoring Report form provided by the Division, and shall retain the completed forms on site. Visual
monitoring results should not be submitted to the Division, except upon DWQ's specific requirement to do
so"
Submitting Reports `,
Two signed copies of Discharge Monitoring Reports (DMRs) shall be submitted to:
Central Files
Division of Water Quality��
1617 Mail Service Center" `` r
Raleigh, North Carolina'27699-1617
In addition, a separate signed Annual Summary DMR copy shall be submitted to the local DWQ Regional
Office,(RO) by March I 'of each year.
Addresses for each RO and the counties covered by each RO� an be found here:
httu:/hv«"w.enr.state.nc.uslhtml/re�Ziona]oMces:h[m1.'; e permittee shall retain the completed originals
on site. Visual monitoring results should not be submitted to the Regional Offices or Central Files unless
specifically requested by-DWQ \ ;
Availability of Reports
Except for data determi:te&'to be confidential under NCGS 143-215.3(a)(2) or Section 308 of the Federal
Act, 33 USC 1318, all reports prepared in accordance with the terms shall be available for public inspection
at the offices of the Division of Water Quality. As required by the Act, analytical data shall not be
considered confidential. Knowingly making any false statement on any such report may.result in the
imposition of criminal penalties as provided for in NCGS 143-215.613 or in Section 309 of the Federal Act,
Non-Stormwater Discharges
If the storm event monitored in accordance with this Individual Permit coincides with a non-stormwater
discharge, the permittee shall separately monitor all parameters as required under the non-stormwater
discharge permit and provide this information with the stormwater discharge monitoring report.
Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned changes.at the permitted
facility which could significantly alter the nature or quantity of pollutants discharged. This notification
requirement includes pollutants which are not specifically listed in the Individual Permit or subject to
notification requirements under 40 CFR Part 122.42 (a).
Anticinated Noncompliance
The permittee shall give notice to the Director as soon as possible of any planned changes at the permitted
facility which may result in noncompliance with the Individual Permit requirements.
Part III Page 7 of 8

W
Permit No. NCS000533
Spills
The permittee shall report to the local DWQ Regional Office, within 24 hours, all significant spills as
defined in Part VI of this permit. Additionally, the permittee shall report spills including: any oil spill of 25
gallons or more, any spill regardless of amount that causes a sheen on surface waters, any oil spill
regardless of amount occurring within 100 feet of surface waters, and any oil spill less than 25 gallons that
cannot be cleaned up within 24 hours.
Bypass
a. Anticipated bypass. If the permittee knows in advance of the need for a bypass, it shall submit
prior notice, if possible at least ten days before the date of the bypass; including an evaluation of
the anticipated quality and affect of the bypass. -
b. Unanticipated bypass. The permittee shall submit notice within 24 hours of becoming aware of an
i
unanticipated bypass.
9. Twenty-four Hour Reporting
The permittee shall report to the central office or the appropriate_ regional office any noncompliance which
may endanger health or the environment. Any information 'shall be provided orally within 24 hours from
the time the permittee became aware of the circumstances. A written submission shall also be provided
within 5 days of the time the permittee becomes aware of the circumstances.
The written submission shall contain a description of the noncompliance, and its causes; the period of
noncompliance, including- exact dates and times, and if the noncompliance has not been corrected, the
anticipated time compliance is expected'to continue; and steps taken or planned to reduce, eliminate, and
prevent reoccurrence of the noncompliance �/
r
The Director may waive the written report on a case -by -case basis if the ora!-report has been received
`.
within 24 hours:- .
10_ Other Noncompliance
The permittee shall report all instances of noncompliance not reported under 24 hour reporting at the time
monitoring reports are submitted.
H. Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in a Notice of Intent to be
covered under this Individual Permit or in any report to the Director, it shall promptly submit such facts or
information.
Part III Page 8 of 8

NCS000533
PART IV LIMITATIONS REOPENER
This individual permit shall be modified or alternatively, revoked and reissued, to comply with any applicable
effluent guideline or water quality standard issued or approved under Sections 302(b) (2) (c), and (d), 304(b) (2) and
307(a) of the Clean Water Act, if the effluent guideline or water quality standard so issued or approved:
a. Contains different conditions or is otherwise more stringent than any effluent limitation in the individual
permit; or
b. Controls any pollutant not limited in the individual permit.
The individual permit as modified or reissued under this paragraph: shall also contain.any other requirements in the
Act then applicable.
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS\,.,
r ,f
The permittee must pay the administering and compliance/ monit ring fee within 30 (thirty) days after being billed by
the Division. Failure to pay the fee in timely manner in accordance with t5A NCAC 2H .0105(b)(4) may cause this
Division to initiate action to revoke the.Individual P6 mit.
PARTVI DEFINITIONS
ri
1. Act `
See Clean Water Act.
Allowable Non-Stormwater Discharges
This permit regulates stormwater discharges. Non-stormwater discharges which shall be allowed in the
stormwater conveyance system are:
(a) All other discharges that are authorized by a non-stormwater NPDES permit.
(b) Uncontaminated groundwater, foundation drains, air -conditioner condensate without added
chemicals, springs, discharges of uncontaminated potable water, waterline and fire hydrant
fleshings, water from footing drains, flows from riparian habitats and wetlands.
(c) Discharges resulting from fire -fighting or fire -fighting training.
Best Management Practices (BMPs)
Measures or practices used to reduce the amount of pollution entering surface waters. BMPs may take the
form of a process, activity, or physical structure. More information on BMPs can be found at:
http: //c fpub.epa.gov/npdes/stormwater/menuofbmps/index.cfni.
Bypass
A bypass is the known diversion of stormwater from any portion of a stormwater control facility including
the collection system; which is not a designed or established operating mode for the facility.
Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a single above ground
storage container having a capacity of greater than 660 gallons or with multiple above ground storage
containers located in close proximity to each other having a total combined storage capacity of greater than
1,320 gallons.
Appendix A: Page 1 of 4

W
Permit No. NCS000533
6. Certificate of Coverage
The Certificate of Coverage (COC) is the cover sheet which accompanies the Individual Permit upon
issuance and lists the facility name, location, receiving stream, river basin, effective date of coverage under
the permit and is signed by the Director.
7. Clean Water Act
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as amended, 33 USC
1251, et. seq.
8. Division or DWO
The Division of Water Quality, Department of Environment and Natural Resources.
9. Director \ n
The Director of the Division of Water Quality, the permit issuing authority.
10. EMC
The North Carolina Environmental Management Commission.
IL . Grab Sample
An individual sample collected instantaneougly. Grab samples that will be analyzed (quantitatively or
qualitatively) must be taken within the first 30 in tes`of discharge.
12. Hazardous Substance
Any substance designated under.4_0 CFR Partt116 pursuant to Section 311 of the Clean Water Act.
13. Landfill � -
A disposal facility or part of a disposal facility where waste is placed in or on land and which is not a land
treatment facility, a surface impoundment, an injection well, a hazardous waste long-term storage facility or
a surface storage facility.
14. Municipal Separate Storm Sewer System
A stormwater collection system within an incorporated area of local self-government such as a city or town.
15. No Exposure
A condition of no exposure means that all industrial materials and activities are protected by a storm
resistant shelter or acceptable storage containers to prevent exposure to rain, snow, snowmelt, or runoff.
Industrial materials or activities include, but are not limited to, material handling equipment or activities,
industrial machinery, raw materials, intermediate products, by-products, final products; or waste products.
DWQ may grant a No Exposure Exclusion from NPDUS Stormwater Permitting requirements only if a
facility complies with the terms and conditions described in 40 CFR § 122.26(g)
16. Notice of Intent
The state application form which, when submitted to the Division, officially indicates the facility's notice of
intent to seek coverage under an Individual Permit.
17. Pennittee
The owner or operator issued a certificate of coverage pursuant to this Individual Permit.
A
Appendix A: Page 2 of 4 Pages

Permit No, NCS000533
18. Point Source Discharge of Stormwater
Any discernible, confined and discrete coi.veyance'including, but not specifically limited to, any pipe, ditch,
channel, tunnel, conduit, well, or discrete fissure from which stormwater is or may be discharged to waters
of the state.
19, Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall. The time between this storm event and the previous
storm event measuring greater than 0.1 inches must be at least 72 hours. A single storm event may have a period of
no precipitation of up to 10 hours. For example, if it rains but stops before producing any collectable discharge, a
sample maybe collected if the next rain producing a discharge begins within 10 hours.
20. Representative Outfall Status.
When it is established that the discharge of stormwater runoff from a single outfall is representative of the
discharges at multiple ot,falls, the DWQ may grant representative outfall status. Representative outfall
status allows the perminee to perform analytical monitoring at a'redriced number of outfalis.
21. Secondary Containment
J
Spill containment for the contents of the single largest tank within the containment structure plus sufficient
freeboard to allow for the 25-year, 24-hour storm event
22. Section 313 Water Priority Chemical
A chemical or chemical category which:
a. Is listed in 40 CFR 372.65 pursuant'to Section 313 of Title III of the Superfund Amendments and
Reauthorization Act (SARA) of:1986, also titled the Emergency Planning and Community Right -
to -Know Act of 1986;f
b. Is present at or above threshold levels.at a facility subject to SARA title 11I, Section 313 reporting
requirements; and yr.
C. Meets at least one of the following criteria:
(1) Is listed.iikappendix D 'of 40 CFR part 122 on Table II (organic priority pollutants), Table
III (certain metals, cyanides, and phenols) or Table IV (certain toxic pollutants and
hazardous substances);
(2) Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the CWA at 40
CFR 116.4; or
(3) Is a pollutant for which EPA has published acute or chronic water quality criteria.
23. Severe Property Damage
Means substantial physical damage to property, damage to the control facilities which causes them to
become inoperable, or substantial and permanent loss of natural resources which can reasonably be
expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused
by delays in production.
24. Significant Materials
Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents, and plastic
pellets; finished materials such as metallic products; raw materials used in food processing or production;
hazardous substances designated under section 101(14) of CERCLA; any chemical the facility is required to
report pursuant to section 313 of Title III of SARA; fertilizers; pesticides; and waste products such as ashes,
slag and sludge that have the potential to be released with stormwater discharges.
25. Significant Spills
Includes, but is not limited to: releases of oil or hazardous substances in excess of reportable quantities
under section 311 of the Clean Water Act (Re[, 40 CFR 1 10.10 and CFR 1 17.21) or section 102 of
CERCLA (Ref: 40 CFR 302.4).
Appendix A: Page 3 of 4 Pages

Permit No. NCS000533
26, Stormwater Discharge Qutfall (SDO)
The point of departure of stormwater from a discernible, confined, or discrete conveyance, including but not
limited to, storm sewer pipes, drainage ditches, channels, spillways, or channelized collection areas, from
which stormwater flows directly or indirectly into waters of the State of North Carolina.
27. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately following rainfall or as a
result of snowmelt.
28. Stormwater Associated with Industrial Activi
The discharge from any point source which is used for collecting and conveying stormwater and which is
directly related to manufacturing, processing or raw material storage areas at an industrial site. Facilities
considered to be engaged in "industrial activities" include those activities defined in 40 CFR 122.26(b)(14).
The term does not include discharges from facilities or activities excluded from'the NPDES program.
29. Stormwater Pollution Prevention Plan
A comprehensive site -specific plan which'details measures and practices to reduce stormwater pollution and
is based on an evaluation of the pollution potential of the site,
30. Total Maximum Daily Load (TMDL)
TMDLs are written plans for attaining and maintaining waterquality standards, in all seasons, for a specific
I
water body and pollutant. (A list of approved TMDLs for the state of North Carolina can be found at
http://h2o.enr.state.nc.us/tmdln
31. Toxic Pollutant
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act_
32. Vehicle Maintenance Activity��! x —
Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication, vehicle cleaning operations, or
airport deicing operations.
33. Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported by water, air,
gravity, or ice from its site of origin which can be seen with the unaided eye.
34. 25-year, 24 hour storm event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the average, once in 25
years.
Appendix A: Page 4 of 4 Pages

NCS000533
APPENDIX A: ACUTE TOXICITY TESTING FOR STORMWATER OUTFALLS
L ANNUAL TESTING (PASS/FAIL ACUTE TOXICITY TESTING):
The permittee shall conduct acute toxicity tests on a yearly basis using protocols defined in the North
Carolina Procedure Document entitled•"Pass/Fail Methodology for Determining Acute Toxicity in a
Single Effluent Concentration" (Revised -July, 1992 or subsequent versions). The monitoring shall be
performed as a `water flea" (Cerivdaphnua dubia) 48-hour static test. ,.
Stormwater samples shall be collected as a single grab sample. Samples for self -monitoring purposes
must be obtained during a representative storm event. The tests.will'be performed during the first six
months of the year (January -June).
If at any time there is significant mortality at a stormwater, effluent concentration of 100%, the results
will be considered as a benchmark exceedance of toxicity. y
All toxicity testing results required as part of this permit coridit on will be entered on the Stormwater
Discharge Monitoring Form (DMR) for the month in which"it�was performed, using the parameter code
TGA3B. One copy shall be submitted to Central Files, and one copy shall be submitted to the
Stormwater Permitting Unit as follows: L
Attention: Central File s
Division of Water O�ality
1617 Mail Service•Center
Raleigh; North Carolina 27699-1617
Attention: Stormwater Permitting Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Additionally, DWQ Form AT-2 for Acute Pass/Fail Tests (original) is to be sent to the following
address:
Attention: NC DENR 1 DWQ 1 Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be sent and postmarked to the Environmental Sciences
Section and Central Files no later than 30 days after the end of the month in which the test was
conducted.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine
of the stormwater toxicity sample must be measured and reported if chlorine is employed for disinfection
of the stormwater discharge.
If there is no stormwater discharge from the facility during the months which toxicity monitoring is
required, the permittee will complete the information located at both the top of the aquatic toxicity (AT)
Appendix A: Page 1 of 4

Permit No. NCS000533
Pest:form and DMR indicating the facility -name, permit number, stormwater outfall number, county, and
the month/year of the report with the notation of "No Flow' in the comment area of the form. The
permittee shall submit three (3) "no flow" reports: one report shall be submitted to the Environmental
Sciences Section, one to the Stormwater Permitting Unit (SPU) Central Office, and one report shall be
sent to Central Files at the address cited above. The permittee shall submit acute toxicity monitoring as
outlined above, at the next available representative storm: event.
H. ACTIONS FOR FAILURE OF PASS/FAIL TESTING:
Should any single scheduled monitoring indicate a failure to meet toxicity benchmark levels, a
series of measures shall occur:
1) Within 30 calendar days from availability of the test results,Ae permittee shall contact the
Division SPU Central Office and the Regional Office Supervisor in writin .
a. If other stormwater monitoring parameters have e_rceeded benchmark values, the
Regional Office may exempt the permittee ,from additional acute toxicity monitoring
(other than regularly scheduled test periods); at tlae Regional Office's discretion. The
permittee shall continue to address all other stormwater parameter benchmark
exceedances. . / ' �/ �Imo'
b. If the permittee has not exceeded .other"benchmark values, or if the Regional Office
does not exempt the permittee from additional monitoring, the permittee shall
immediately institute monthly acute toxicity monitoring with a 48-hour multiple dilution
test per U.S. EPA Method 20010: "Methods for Measuring the Acute Toxicity of
Effluents to Fresh\vater and Marine Organisms,," EPA 821/R-02/012 (October 2002).
A, Ji
III. A CTIONS IF MONTHL Y MONITORING IS INSTITUTED (MUL TIPLE-DIL UTION
TESTING):
If -rhonthly acute toxicity monitoring is instituted per Section It above, the permittee shall perform
the tests per the following conditions:
1) An LC50 greater than 100% shall be used as a benchmark passing endpoint; Stormwater
Permitting Unit (SPU) Central Office may determine alternative endpoints as "passing" on a
case -by -case basis, depending on the specific characteristics of the facility's stormwater
discharge. Multiple dilution tests will be run at 100%, 50%, 25%, 12.5%, 6.25% and 0%
stormwater unless other test concentrations are determined appropriate by the Stormwater
Permitting Unit (SPU) Central Office.
2) Multiple Dilution Test Results shall be submitted on form AT-1 for Acute Multiple Dilution
Tests. The parameter code is TAA313. The permittee shall:
a. Submit form AT-1 (original) to the DWQ Environmental Sciences Section.
b. Send a completed a Stormwater DMR form (original) with an attached form AT-1
(original) to DWQ Central Files.
c. Send a completed a Stormwater DMR form (copy) with an attached form AT-1 (copy) to
the DWQ Stormwater Permitting Unit.
Appendix A: Page 2 of 4 Pages

Permit No, NCS000533
3) : The permittee shall perform monthly acute toxicity monitoring until one of the following
permit conditions is met:
a. THREE CONSECUTIVE MULTIPLE -DILUTION TESTS PASS. No further tests
need to be performed until next regularly scheduled test period.
-OR-
b. _EITHER OF THE FOLLOWING OCCURS:
i. A TOT_?L OF FIVE MULTIPLE -DILUTION TESTS FAIL
-OR-
ii. THREE CONSECUTIVE MULTIPLE -DILUTION TESTS FAIL.
If either of the above occurs, fiirther actions are nec•essaiy.- See IV. below.
4) The permittee shall suhruit a summary of all test results fonthe multiple dilution test series
along with complete copies of the test reports as received from the laboratory to the Regional
Office Supervisor, to DWQ Central Files and to SPU. These shall be'sent and postmarked within
30 calendar days of receipt of the last failed or passed multiple -dilution test (as described above
in III. 3)).
IV. ACTIONS FOR FAILURE OF MULTIPLE DILUTION TESTS (TRE, TRI or OTHER
MEASURES):
If the permittee fails either A TOTAL OF FIVE multiple -dilution tests or THE THIRD
CONSECUTIVE multiple -dilution test as described in Section III 3) b., the permittee shall execute
the following:
t
1) A toxicity reduction evaL ai •:)n (TRE) shall be automatically instituted. Within 30 calendar days
from availability of the test results, the permittee shall contact the Division SPU Central Office
and the Regional Office Supervisor in writing.
a. The permittee shall submit one copy of a plan for conducting a TRE to the DWQ SPU,
and one copy to the DWQ Environmental Sciences' Section. These copies shall be
submitted within 60 calendar days of the date of DWQ SPU's direction to perform the
TRE. -
b. This plan must be approved by DWQ SPU before the TRE is begun. A schedule for
completing the TRE shall be established in the plan approval. A Toxicity Identification
Evaluation (TIE) may be a component of the TRE.
c. Upon DWQ's approval, the TRE schedule may be modified if toxicity is intermittent
during the TRE investigations. A revised WET test schedule may be established by
DWQ for this period.
2) Additionally after the first year that TRE results have been collected and submitted, depending
on results the Regional Office nary (among options):
• Require the permittee to install structural stormwater controls;
• Require the permittee to implement other stormwater control measures or BMPs;
• Require the permittee to collect and treat the discharge and/or eliminate the
discharge;
• Require that the permittee implement site modifications to qualify for the No
Exposure Exclusion; or
Appendix A: Page 3 of 4 Pages

Permit No. NCS000533
• Require that the permittee perform up -stream and downstream biological assessment
in the receiving water. I
V. MEASURES APPLICABLE TO ALL TESTS:
All acute toxicity test results shall be submitted in a concise summary at the end of the five year
permit term. One copy of this report shall be sent to the Regional Office Supervisor, one copy to the
SPU Central Office, and one copy to the DWQ Environmental Sciences Section.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this;permit may be re-
opened and modified to include alternate monitoring requirements. "
If the Pennittee monitors any pollutant more frequently than required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all
Acute Toxicity Forms submitted.'~
NOTE: Failure to achieve test conditions as specified in the cited'document, such as minimum control
organism survival and appropriate environmental controls, shal�'constitute an invalid test and will require
immediate follow-up testing to be completed no later than the last day of the month following the month
of the initial monitoring.
Appendix A: Page 4 of 4 Pages

Please print or type in the unshaded areas only
fill-in.areas are aced for!elite e, i.e., 12 charactoWinch . For Approved. OMB No. 2t140-0t)88. Approval expires 5-31-92
FORM U.S. ENVIRONMENTAL PROTECTION AGENCY I, EPA I.D. NUMBER
,�,�PA GENERAL INFORMATION F NCD 024 766 719 zrA D
Consolidated Permits Program
GENERAL (Read the "General instructions" before starting.) 1 1 2 13 14 15
I. EPA I.D. NUMBER
III. FACILITY NAME
V. FACILITY
MAILING LIST
NCD024766719
Oak- Bark Corporation
Attn: Peter R. Yurgel
If a preprintedlabel has been provided, affix it
in the designated space. Review the
information carefully if any of it is incorrect,
cross through it an& enter the correct data in
the appropriate fill-in area below. Also, if any of
the preprinted data is absent (the area to the
left of the label space lists the information that
should appear), please provide it in the roper
fill-in area(s) below_ If the label is complete and
correct, you need not complete Items I, III, V,
and VI(except W-B which must be completed
regardless). Complete all items if no label has
been proved. Refer to the instructions for
VI. FACILITY 333 Neils Eddy Rddetailed item descriptions and for the legal
, authorization under which this data is collected.
LOCATION
Riegelwood N.C. 28456
11. POLLUTANT CHARACTERISTICS
INSTRUCTIONS: Complete A through J to determine whether you need to submit any permit application forms to the EPA. If you answer 'yes" to any
questions, you must submit this form and the supplemental from listed in the parenthesis following the question. Mark W in the box in the third column if the
supplemental form is attached. If you answer "no" to each question, you need not submit any of these forms. You may answer "no" if your activity is
excluded from permit requirements; see Section C of the instructions. See also Section D of the instructions for definitions of bold-faced terms.
MARK "X"FORM
MARK "X"
SPECIFIC QUESTIONS
SPECIFIC QUESTIONS
NO
YES
NO
FORM
ATTACKED
ATTACHED
A. Is this facility a publicly owned treatment works
B. Does or will this facility (either existing or
which results in a discharge to waters of the
®
proposed) include a concentrated animal
U.S.? (FORM 2A)
feeding operation or aquatic animal
production facility which results in a discharge
to waters of the U.S.? (FORM 2B)
16
17
18
19
20
21
Is this facility which currently results in
®
❑
D. s this propose facility other than those described
discharges to waters of the U.S. other than
in A or B above) which will result in a discharge
22
23
24
25
26
27
those described in A or B above? FORM 2C
to waters of the U.S.? FORM 20
Does or will this facility treat, store, or dispose of
F, Do you or witl you inject at this facility industrial or
hazardous wastes? (FORM 3)
❑
®
❑
municipal eftluent'below tho lowermost stratum
❑
®
❑
containing, within orie..quarter mile of the well
bore, underground sources of drinking water?
26
29
30
31
32
33
(FORM 4)
G. Do you or will you inject at this facility any
H. Do you or will you inject at this facilityfluids for
produced water other fluids which are brought to
the surface in connection with conventional oil or
®
special processes such as mining of sulfer by the
Frasch process, solution mining of minerals, in
natural gas production, inject fluids used for
situ combustion of fossil fuel, or recovery of
enhanced recovery of oil or natural gas, or inject
geothermal energy? (FORM 4)
fluids for storage of liquid hydrocarbons?
FORM 4 34 1 35 36
1. Is this facility a proposed stationary source J. Is this facility a proposed stationary source
which is one of the 28 Industrial categories listed which is NOT one of the 28 industrial categories
in the instructions and which will potentially emit ❑ ® ❑ listed in the instructions and which will potentially
100 tons per year of any air pollutant regulated emit 250 tons per year of any air pollutant
under the Clean Air Act and may affect or be regulated under the Clean Air Act and may affect
located in an attainment area? FORM 5 40 41 42I or be located in an attainment are? FORM 5
III. NAME OF FACILITY
c SKIP Silar LLC
1
15 1 16-29 30 ...
. FACILITY CONTACT A. NAME & TITLE last,
Peter R. Yurgel / Plant manager
. FACILITY MAILING ADDRESS
333 Neils Eddy Rd.
B. CITY
Riegelwood
VI. FACILITY LOCATION
A. STREET, ROUE
333 Neils Eddy Rd.,
Columbus
P.O.
NO. OR OTHER SPECIFIC IDENTIFIER
B. PHONE area code & no.
910 FT 655 1 1 6980
STATE D. ZIP CODE
N.C. 28456
41 42 47 51
C. CITY OR TOWN D. STATE E. ZIP CODE F. COUNTY CODE
c Riegelwood N.C. 28456 Columbus
6
15 1 16 40 41 42 1 47 51 1 54

CONTINUED FROM THE FRONT
F = FEDERAL M = PUBLIC (other than federal or state)
S = STATE O = OTHER (specify)
P = PRIVATE
P(specify)
kel-d
c
15
910
16 18
655
6980
19 21
22 25
E. STREET OR PO BOX
333 Neils Eddy Rd.
26 55
F. CITY OR TOWN
G. STATE
H. ZIP CODE
IX. INDIAN LAND
G
Riegelwood
N.C. 284$6
42 42 47 51
D. PSD Air Emissions from ETp2sed
s P ° 09749R00
15 16 17 1 18
Is the facility located on Indian lands?
❑YES ®NO
Sources
Synthetic Minor Air Permit
30
s
15 16 40
X. EXISTING ENVIRONMENTAL PERMITS
A. NPDES (Discharges to Surface Water
9 N
'
N/A
15L 16
1 17
1 18 30
B. UIC (Underground Injection of Fluids
E. OTHER:
(Specify)
N/A
9
U
9
15
1 16
1 17
1 18 30
15 1
16
17
1 18
30
C. RCRA Hazardous Wastes
E. OTHER (specify)
(Specify)
'
NCD024766719
T °
N/A
R
9
0c
15 16 17
XI. MAP
16 30
15 16 17 18
30
Attach to this application a topographic map of the area extending to at least one mile beyond property boundaries. The map must
show the outline of the facility, the location of each of its existing and proposed intake and discharge structures, each of its
hazardous waste treatment, storage, or disposal facilities, and each well where it injects fluids underground. Include all springs,
rivers and other surface water bodies in the map area. See instructions for precise requirements.
XII. NATURE OF BUSINESS(provide a brief description)
Silar LLC (a division of MPD Holdings) manufactures Organosilicon compounds and Fine organics using batch
processes.
XIII. CERTIFICATION see instructions
1 certify under penalty of law that I have personally examined and am familiar with the information submitted in this application and
all attachments and that, based on my inquiry of those persons immediately responsible for obtaining the information contained in
the application, I believe that the information is true, accurate and complete. 1 am aware that there are significant penalties for
submitting false information, inq4gV the possibft of qnp and imprisonment,—,
A. NAME & OFFICIAL TITLE (type orprrnt) B. I PLAT E C. DATE SIG ED
John Shibley / President S
COMMENTS FOR OFFICIAL USE ONLY

EPA ID Number (copy from Item f of Form 1) I Form
Please print or type in the unshaded areas only NCD 024 766 719 Approved- ApMprroval expires 31-92
U.S. Environmental Proteotlon Agency
FORM Washington, DC 20460
2F Or EPA Application for Permit to Discharge Storm Water
NPDES Discharges Associated with industrial Activity
Paperwork Reduction Act Notice
Public reporting burden for this application is estimated to average 28.6 hours per application, including time for reviewing instructions, searching erasting data sources,
gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding the burden estimate, any other aspect
of this collection of information, or suggestions for improving this form, including suggestions which may increase or reduce this burden to: Chief. Information policy
Branch, PM-223, U.S. Environmental Protection Agency, 12M Pennsylvania Avenue, NW, Washington, bC 20460, or thrector. Offlce of Information and Regulatory
Affairs, Office of Management and BrKiget, Washington. DC 20503.
Outfall Location
each oulfali, list Tre latitude and longitude of its location to the nearest 15 seconds and the name of the rece'Mri water.
A Outfall Number
(lisQ
B. Latitude
C. Longitude
D, Receiving Water
name
Col
34.00
19.00
69.00
7e.00
12-00
2-00
Livingston Creek
002
34-001
19.00
71,00
70.00
12.00
e.00
Livingston Creek
005
34.00
19.00
76,00
70.00
12.00
6.00
Livingston Creek
II. Improvements
A Are you now required by any Federal, State, or local authority to meet arty implementation schedule for the constnA tior> upgrading or operation of wastewater
treatment equipment or practices or any other environmental programs which may affect the discharges described in this application? This includes, but is not limited
to, permit conditions, administrative or enforcement orders, enforcement compliance schedule letters, stipulations, court orders, and grant or loan conditions.
1. Identification of Conditions
Agreements Etc.
c applicable
2. Affected Outfalls
number source of disc
3. &ie€ DescriPtIon of
4. Final
aiiance Date
B: You may attach additional sheets describing any additional water pollution (or other environmental projects which may affect your discharges) you now have under
way or which you plan. Indicate whether each program is now under way or planned, and indicate your actual or planned schedules for construction.
Site Drainaae Mao
Attach a site map showing topography (or indicating the outline of drainage areas served by the oulfalis(s) covered in the application if a topographic map is unavailable)
depicting the facility including: each of its intake and discharge stnrctures; the drainage area of each storm water outPall; paved areas and twiidirigs within the drainage
area of each storm water otdfall, each (mown past or present areas used for outdoor storage of disposal of significant materials, each eAsting st ictural control measure
to reduce pollutants in storm water runoff, materials loading and access areas, areas where pesticides, herbicides, soil conditioners and fertilizers are applied; each of
its hazardous waste treatment, storage or disposal units (including each area not required to have a RCRA permit which is used for accurrulating hazardous waste
under 40 CFR 262.34); each well where fluids from the facility are injected underground; springs, and other surface water bodies which received storm water discharges
from the facility.
EPA Form 3510-2F (1-92) Page 1 of 3 Continue on Page 2

Continued from the Front
IV. Narrative Description of Pollutant Sources
A. For each outfall, provide an estimate of the area (include units) of imperious surfaces (nducing pavgd areas and Willing roofs) dralned to the ouft1l, and an estimate of the l;tal surface area
drained by the outfall.
Outfall
Area of Impervious Surface
Total Area Draned
Outfall
Area of Impervious Surface
Total Area Oralned
Number
(P-Vk* -93)
(provide units)
Number
#provide untts)
orovoe ono)
001
17,670 square feet
211,220 sq. feet
002
24, 158 square feet
24,159 sq. feet
005
15,119 square feet
43,560 sq. feet
B. Provide a narrative descrption of significant materials that are cunentty or in the pest three years have been treated, stored or disposed in a manner to allow exposure
to storm water; method of treatment, storage, or disposal; past and present materials management practices employed to rrunimize contact by these materials with
storm water runoff; materials loading and access areas, and the location, manner, and frequency in which pesticides, herbicides, soil conditioners, and fertilizers are
applied.
See Attachments: A; SWQG1,SW002 & SWO05
C. For each outfat), provide the location and a description of existing structural and nonstructural control measures to reduce pollutants in storm water runoff; and a
description of the treatment the storm water receives, including the schedule and type of maintemnoee for control and treatment measures and the ultimate disposal
of arry solid or fluid wastes other than by discharge.
Cutfall
List Codes from
Number
Treatment
Fable 2F-1
4-A
SW 001 Silar Drum Whse: Housekeeping Training / Monthly Audits by EHS
SW 002 Silar( Pine Cheer Lab: Housekeeping Ttatninc3 ( Monthly Audits by EELS
SW 005 N. Side of Silar Plant: Housekeeping Training / Monthly Audits by EHS / Relocated Drum Rinse
Station to a contained Area
V. Nonstormwater Discharges
A I certriy under penalty of law hat the outfall(s) covered by this application have been tested or evaluated for the presence of nonstormwater discharges, and that all
nonstomwmter discharged from these outfall(s) are i ntified in either IQ aoco rying Form 2C or From 2E application for the outfall.
Name and Cf1cial Title (type or print)
Signa Date Signed
John Shibley / Preident
�j
Isl a 1 /09
B Provide a description of the method used, the date of ea testing, and the onsite drainage paints that were diTctty observed during a test
l.On December 6, 2007, a visual observation was conducted on Outfalls 002, 005, and 007, During this visual observations, it
was noted that there were no additional discharges to these outfalls. (inspection conducted with no rain present)
2.On October 21, 2008, a visual observation was conducted on OutEalls 002, 005, and 007. During this visual observation, it was
noted that there were no additional discharges to these outfalls. (inspection conducted with no rain present)
3.0n April 01 b 02 a visual observation was conducted on outfall C07. This observation was conducted during a rainfall event. It
was noted that there was no Outfall frog this source- All runoff was retained in the small retention pond south of the
outfall.i[ was also observed that there was no indication of oil sheen.
I. Significant Leaks or Spills
Provide existing information regarding the history of significant leak or spills of toxic or hazardous poiiutarrts at the facility in the last three years, inducting the
approximate date and location of the spill or leak and the type and amount of material released
o sisnificant spills or leaks occurred in the last three years
EPA Form 3510-2F (1-92) Page 2 of 3 Continue on Page 3

EPA ID Number (copy from Item 1 of Form 1)
Continued from Page 2 NCDO24766719
ll. Discharge Information
A, B, C, & D: See instructions before proceeding. Complete one set of tabtesr for each ola fall. Annotate the outfall number in the space provided.
Table VII-A, VII-6, VIl-C are included on separate sheets numbers VII-1 and VII-2.
E. Potential discharges not covered by analysis — is any toxdc pollutant listed in table 2F-2, 2F-3, or 2F-4, a substance or a component of a substance which you
currently use or manufacture as an intermediate or final product or byproduct?
© Yes (list all such pollutants below) ❑ No (go to Section LX)
SW 001 , SW002 6 SW005: Chlorine, Magnesium, Chloroform, Methylene Chloride, Tetrachloroethylene, Toluene, Allyl
chloride,Diethylamine, Dimethylamine, Styrene, Triethylamine, Trimethylamine, vinyl acetate, lrylene,
III. Biological Toxicity Testing Data
Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on any of your discharges or on a receiving water in
relation to your discharge within the last 3 years?
❑ Yes (fist all such pollutants beta.) ❑✓ No (go to Section DQ
IX. Contract Analysis Information
Were any of the analyses reported in Item VII performed by a contract laboratory or oonsuhing firm?
© Yes (list the name, address, and telephone number of, and pollutants ❑ No (go to Section x)
analyzed by, each such laboratory or firm below)
A. Name
B. Address
C. Area Code & Phone No.
D. Pollutants Analyzed
Oxford Labs
1316 S. 5th street
910-763-9793
All data through 4/2007
Wilmington, NC 26401
Environmental Chemists, Inc.
6602 Windmill Way
910-392-0223
All data after 4/2007
Wilmington, NC 29405
X. Certification
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 property gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons
drectly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, titre, accurate, and complete. I am aware that
there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
A. Name E Official Title ( Type Or Print)
B. Area Code and Phone No.
John Sh bley, President
[phone]
C. Sign
I �
1 �
D. Data Sign�A_ jIF
{
I()
EPA Ford3510-2F (1-92) r Page 3 of 3

EPA ID Number (copy hom Item f of Form 1) Form Approved. OMB No. 2040-0086
CDO24766719 I Approva€ expires 5-31-92
VII. Discharge information (Continued from page 3 of Form 2F)
Part A — You must xavide the results of at least one analysis for every pollutant in this table. Complete one table for each outfali, See instructions for additional details.
Pollutant
and
CAS Number
(if avallable)
Maximum Values
(ndude units)
Average Values
(mdude units)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
FlowWeightedFirst
Composite
Grab Sample
Taken During
20
Minutes
Flow -Weighted
Composite
Oil and Grease
NIA
Biological Oxygen
Demand (BODS)
See atacbment e
Chemical Oxygen
Demand (COD)
Total Suspended
Solids (rSS)
Total Nitrogen
Total Phosphors
PH
Minimum
Maximum
Minimum
Maximum
Part B— List each pollutant that is limited in an effluent guideline which the facility is subject to or any pollutant listed in the facility's NP'DES permit for its process
wastewater (if the facility is operating under an existing NPOES permit). Complete one table for each outfall. See the instructions for additional details and
requirements.
Pollutant
and
CAS Number
(if avaBable)
Maximum Values
(Ihdije ands)
Average Values
(include units)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow-Weigfded
Composite
N/A
EPA Form 3510-2F (1-92) Page VII-1 Continue on Reverse

Continued from the Front
Part C - ust each pollutant shown in Table 2F-2, 2F-3, and 217-4 that you know or have reason to believe is present See the instructions for additional details and
requirements. Complete one table for each outfall.
Pollutant
and
CAS Number
!�l available)
Maximum Values
(inch de -ifs)
Average Values
(indVda Louts)
Number
of
Storm
Events
Sampied
Sources of PotJufants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
see attachment C
Part D — Provide data for the storm events) which resulted in the maximum values for the flow weighted composite sample.
1.
Date of
Storm
Event
2.
Duration
of Storm Event
(in minutes)
3.
Total rainfan
during storm event
(in inches)
4.
Number of hours between
beginning of storm measured
and end of previous
measurable rain event
5.
Maximum flow rate during
rain event
(gaifans/mim#e or
specify units)
6.
Total flow from
rain event
(gaff-s cr specify units)
8/8/2006
a5 minutes
1.1 inches
108 hours
0.099 MG
0.23.5 MG
7. Provide a description or the method of flow measurement or estimate.
The total flow during a rain event was estimated from the drainage area of each outfall and total precipitation.
EPA Form 3510-2F (1-92) Page VII-2

lµ
bS SC,
Q
c

Attachment A SW001, SW002 & SW005
EPA Form 2F — Item IV-B
The following materials are or have been stored within the affected area of Oak-Bark's Storm Water Outfall SW002. The storage
areas are either covered, with built in secondary containment or uncovered with secondary containment. Containments are managed to
prevent overflows and are tested before any rain water is released.( See attachment "E")
Material
State
Category
Primary
Best
Material Handling
Containment
Management
Practice
Acetic Anhydride
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Acetone
Liquid
Cleaning
Drum/Tote
Stored in
Delivered by van;
solvent
warehouse
transported to plant
via fork truck
Allyl Amine
Liquid
Raw
Cylinder
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Allyl Bromide
Liquid
Raw
Cylinder
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Allyl Chloride
Liquid
Raw
Cylinder
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Allylchloroformate
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork
Allylcyanide
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
All 1 1 cid Tether
Liquid
Raw
I Drum
Stored in
Delivered by van;

Attachment A SW001, SW002 & SW005
EPA Form 2F — Item IV-B
material
warehouse
transported to plant
via fork truck
Aminophenol
Powder
Raw
Carboy
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Benzaldehyde
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Benzylmagnesiumchloride in THE
Liquid
Aaw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
n-Butyl Alcohol
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork
1-Butene
Gas
Raw
Cylinder
Stored in
Delivered by van;
Material
cylinder rack
transported to plant
via fork truck
Caustic Soda
Liquid
Raw
Tote/Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Chlorine
Gas
Raw
Cylinder
Stored in
Delivered by van;
Material
Oxidizer rack
transported to plant
via fork truck
Diallylmaleate
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck

Attachment A SW001, SWO02 & SWO05
EPA Form 2F — Item IV-B
Diethylamine
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Dimethylamine
Gas
Raw
Cylinder
Stored in
Delivered by van;
material
cylinder rack
transported to plant
via fork truck
Dimethylformamide
Liquid
Solvent
Drum
Stored in
Delivered by van;
warehouse
transported to plant
via fork truck
Dodecene
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Dodecylamine
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
transported
Ethanol
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Ethyl ether
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Ethylcyanoacetate
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Glacial Acetic Acid
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Heptanes
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Hexanes
I Liquid
1 Raw
Drum
I Stored in
Delivered by van;

Attachment A SW001, SWO02 & SWO05
EPA Form 2F -- Item 1V-13
Material
warehouse
transported to plant
via fork truck
Hexene
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Isopropanol
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
lsopropylamine
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Magnesium Chips
Solid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Magnesium Sulfate
Powder
Raw
Bag
Stored in
Delivered by van;
Material
warehouse
transported to plant
'
via fork truck
Mesitylene
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methacrylic Anhydride
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methacrylic Acid
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methanesulfonylchloride
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methanol
1 Liquid
I Raw
I Tote/drum
I Stored in
I Delivered by van;

Attachment A SWOOI, SW002 & SW005
EPA Farm 2F — Item IV-B
Material
warehouse
transported to plant
via fork truck
Methyl-t-Butylether
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methylene Chloride
Liquid
Raw
drum
Stored in
Delivered by van,
Material
warehouse
transported to plant
via fork truck
n-Decene
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
n-Octene
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
ri-Octadecene
Liquid
Raw
drum
Stored in
Delivered by van;
material
warehouse
transported to plant
-
via fork truck
2-Octanol
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Octylamine
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
p-Methoxybenzylchloride
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Pentane
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Perox acetic Acid
I Liquid
I Raw
I Drum
I Stored in
I Delivered by van;

Attachment A SW001, SW002 & SW005
EPA Form 2F — item IV-B
Material
warehouse
transported to plant
via fork truck
Perfluorooctylethylene
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Phenylmagnesiumchloride in THE
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Phosphorou spent achloride
Solid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Potassium Methylate 25% in Methanol
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Silicone Fluid
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Soy Bean Oil (epoxidated)
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Sodium Methylate 25% in Methanol
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Tetrachloroethane
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Tetrahydrofuran
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Thion lchloride
Liquid
Raw
Drum
Stored in
Delivered by van;

Attachment A SW001, SWO02 & SWO05
EPA Form 2F — Item IV-B
material
warehouse
transported to plant
via fork truck
Toluene
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Triethylamine
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Triethylorthoformate
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Trimethylorthoformate
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Xylenes
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Ethylacetate
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Vinylchloroformate
Liquid
Raw
Bottle
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Allylbenzamidine
Liquid
Raw
Cylinder
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Aminopropyltriethoxysilane
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Aminopropyltris trimeth lsilo silane
Liquid
Product
Drum _
warehouse
Manufactured

Attachment A SWOOI, SW002 & SW005
EPA Form 2F — Item IV-B
Bisaninopropyltetramethyldisiloxane
Liquid
Product
Drum
warehouse
Manufactured
Bistrimethoxysilyipropylfumarate
Liquid
Product
Drum
warehouse
Manufactured
But ldimeth lchlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Chlorometh ltrimeth lsilane
Liquid
Product
Drum
warehouse
Delivered by van
Chloropropyltrimethoxysilane
Liquid
Product
Drum
warehouse
Delivered by van
Decameth ltetrasiloxane
Liquid
Product
Drum
warehouse
Delivered by van
Dibut ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Dibut idimethox silane
Liquid
Product
Drum
warehouse
Manufactured
Dieth laminotrimeth lsilane
Li uid
Product
Drum
warehouse
Manufactured
Diisopropylaminodirnethylsilane
Liquid
Product
Drum
warehouse
Manufactured
Dimeth lchlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Dimeth ldichlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Dioct ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Di hen ldichlorosilane
Liquid
Product
Cylinder
warehouse
Manufactured
Divin ltetrameth ldisiloxane
Liquid
Product
Drum
warehouse
Delivered b van
Dodec lmeth ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Eth ltrichlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
He tadecafluordec ltrichlorosilane
Liquid
Product
Bottle
warehouse
Manufactured
He tadecafluordec ]trimetho silane
Liquid
Product
Bottle
warehouse
Manufactured
He tameth ltrisiloxane
Liquid
Product
Drum
warehouse
Delivered b van
Hexameth ldisilane
Liquid
Product
Drum
warehouse
Delivered by van
Hexameth ldisilazane
Liquid
Product
Drum
warehouse
Delivered by van
Hexameth ldisiloxane
Liquid
Product
Drum
warehouse
Delivered by van
Hex lmeth ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Linear Phos honitrii Chloride in Siloxanes
Liquid
Product
Drum
warehouse
Manufactured
Metbacaloxyproplltristrimeth lsilox silane
Li uid
Product
Drum
warehouse
Manufactured
Meth ldichlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Meth ltrichlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Octadec ldimeth lchlorosilane
Liquid
J.Product
Drum
warehouse
Manufactured
Octadec lmeth ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured

Attachment A SW001, SWO02 & SWO05
EPA Form 2F — Item IV-B
Octadec ltrichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Octameth lc clotetrasiioxane
solid
Product
Drum
warehouse
Delivered by van
Octameth ltrisiloxane
Li uid
Product
Drum
warehouse
Delivered by van
Oct lc anoacetate 2
Liquid
Product
Drum
warehouse
Manufactured
Oct ldimeth lchlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Oct lmeth ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Oct ltrichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Phen ldimeth lchlorosilane
Liquid
Product
Drum
warehouse
Manufactured
-Methox be ltrichlorosilane 50% in Toluene
Liquid
Product
Drum
warehouse
Manufactured
Tetrachlorosilane
Liquid
Product
_Cylinder
warehouse
Delivered by van
Tetrameth ldisiloxane
Liquid
Product
Drum
warehouse
Delivered by van
Trichlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
q'rieth lchlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Trieth lsilane
Liquid
Product
Drum
warehouse
Delivered by van
Yriisopropylsilane
Liquid
Product
Drum
warehouse
Delivered by van
Trimeth lchlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Vin ldimeth lchlorosilane
Liquid
Product
Drum
warehouse
Delivered by van
Vin lmeth ldichlorosilane
Liquid
Product
Drum
warehouse
Delivered by van
Via ltrichlorosilane
Liquid
Product
C linder
warehouse
Delivered by van
Polyphosphoric Acid
Liquid
Raw
Material
Drum
warehouse
Delivered by van
Hexafluoroisopropanol
Liquid
Raw
material
Drum
warehouse
Delivered by van
Bishexafluoroisoprpylitaconate
Liquid
Product
Drum
warehouse
Manufactured
Vigloxycarbonylpropyltristrimethylsiloxysitane
Liquid
Product
Bottle
warehouse
Manufactured
Therminol D12
Liquid
HTF
Drum/plant
s stem5
Warehouse/plant
Delivered by van
Propylene Glycol
Liquid
HTF
Drum/Plant
s stems
Warehouse/plant
Delivered by van

Attachment A SW001, SW002 & SW005
EPA Form 2F — Item IV-B
HE-200 Oil Liquid Vacuum Drum/lab Warehouse/Lab Delivered by van
Pum s

Attachment "B"
EPA From 2F Sect, V11, Part A
Outfa11001
1of 1]
oa
Total Flow
BOD
COD
TSS
NH3
TKN
NO3+NO2
calculation
Total Lead
Formaldehyde
Hexamine
Total P
I
Event
I
Total Event
I
Date
(Me)
pH
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg/L}
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
Duration (h)
Precipitation (in)
6/12/2007
0.083
6.3
12
87
-49t
4.2
6.5
.8f
- 12.3j
0.012
0.366
<1.0
0.82
0.671
0.91
Outfa11002: Lab Weir
Date
Total Flow
(MG) I
pH
SOD
(mg1L)
COD
(mg1L)
TSS
(mglL)
NH3
(mg1L)
TKN
(mg1L)
NO3+NO2
(rng/L)
Total
calculation
(mg1L)
Total Lead
(mg1L)
Formaldehyde
(mg1L)
Hexamine
(mg1L)
Total P
(mg1L)
Event
Duration (h)
Total Event
Precipitation (in)
3/2112006
0.023
7.53
226
$02
119
137
146
27
148.0
0.010
14
235
0.83
0.48
4/312006
0.018
6.35
274
563
91
36
66
3.9
69.9
0,007
1
217
0.92
0.37
8/8/2006
0.052
7.07
82
183
48
20
27
1.1
28.1
0.004
0.085
3
1.42
IA
11116/20081
0.0271
7.56
51
245
49
30,9-38.11
1.31
39.4r
0.003
17,41
22.51
1 0.75
0.57
2/112007
0.048
7.44
102
261
93
46
47.7
1.8
49.5
0.005
13.2
24.8
fi.48
1.02
6I1212007
0.043
6.5
760
8730
162
290
1954
1.3
1955.3
0.009
7.15
0.17
0.67
0.91
Maximum
1 U521
7.561
7601
87301
1621
2901
19541
3.91
1955.31
0.011
17.41
1.1
Average
1 0.035
249-1711797.331
93,671
93.321
379.80
1,901
381.701
0.011
8.811
708,721
0.171
1.78L
0.74
Outfall 005: SAane Welr
Date
Total flow
(MG)
pH
SOD
(mg1L)
COD
(mg1L)
TSS
(mg1L)
NH3
(mg1L)
TKN
(mg/L)
NO3+NO2
(mg1L)
Total
calculation
(mg1L)
Total Lead
(mg/L)
Formaldehyde
(mg1L)
Hexamine
(mg1L)
Total P
(mg1L)
Event
Duration (h)
Total Event
Precipitation (in)
3121/2006
0.029
7.71
86
447
114
41
46
1.1
47.1
0.011
13
46
0.83
0.48
4/3/2006
0.022
5.96
123
164
23
23
23
2.3
25.3
0.003
1
44
0.92
0.37
818/2006
0.065
6.58
52
122
38
15
20
0.6
20.6
0.005
0.05
2
1.42
1.1
11116120061
0.034
j 5.48
241
541
131
9.11
10.11
1.71
11.8
-c0.003
1 3.261
3.96
0.75
0.57
21112007
0.061
8.6
16
60
28
9.09
10.6
1.1
11.7
0.003
6.15
6.63
6.08
1.02
2/1/2007 a
0.0611
8.61
161
711
261
9.241
9.421
3.71
13.1
-0.0041
7.071
4.511
0,181
G.0f3I
1.02
6/12120071
0.0541
6.46
1
68
4
6.3
g.?.L
.3
11.81
0.221L
3.89L
8.151
0.541
0.671
0.91
Maximum
0.0651
8.61
_9L
1231
447
1141
411
461
3.691
47.11
0.0111
131
461
0.541
1.1
Average
1 0.0471
1 46.571
140.86
35.1!L
16.10
18.37
1.831
20.211
0.011
4.92
16.461
0.361
2.391
0.78

M
Attachment "C"
EPA Form 2F, Sect. C, part C
The pollutants from EPA Form 2F, tables 217-2, 2173 &2F-4 have not been analyzed for.
Samples will be pulled during the next storm water event and the results will be
forwarded to NCDENR.

Oak -Bark SWP3
WORKSHEET #1
BEST MANAGEMENT PRACTICES (BMPs) IDENTIFICATION
Completed by: W.E.(Red) Lewis
Title: Plt. Managerr
Date: April 2009
Instructions: Describe the Best Management Practices that you have selected to include in your plan. For each of the baseline BMPs,
describe actions that will be incorporated into facility operations. Also, describe any additional BMPs (activity -specific
and site -specific) that you have selected.
BMPs
Brief Description of Activities
Good Housekeeping
Storage of chemicals to minimize contact with storm water (under cover & on pallets); maintain clean working
areas; training of employees; minimize waste accumulation.
Preventative
Weekly inspections of bulk storage and chemical handling areas; monthly inspections of all containment/diking
Maintenance
structures.
Inspection
On a semi-annual basis, perform visual inspection to identify any potential problems that may cause storm water
contamination (e.g., leaks/cracks in dikes).
Spill Prevention and
Educate employee on proper handling of chemicals; inform employees about MSDS information and reporting
Response
procedures for any spill/leak incident; maintain a readily available supply of spill prevention kit materials (e.g.,
absorbent materials).
Sediment and Erosion
Regrade and seed the facility property as necessary to minimize erosion. Construction zones which involving land
Control
disturbment should be reseeded.
Management of
Build curbing to direct strom water around processing areas.
Runoff
Additional BMPs
Verify proper dike pump -out methods. Monitor chemical receiving of bulk chemicals and ensure safe &
(Activity- and Site-
environmentally neutral procedures are followed..
Specific)

Oak -Bark SWP3
WORKSHEET #2
IMPLEMENTATION OF BMPs
Instructions: Develop a schedule for implementing each BMW. Provide a brief description of each BMP, the steps necessary to
implement the BMP (e.g., any construction or design), and the schedule for completing those steps (list
approximate dates).
BMPs
Description of Action(s) Required for Implementation
Scheduled
Notes
Completion Date
Good Housekeeping
1. Perform weekly sweeping of floors in the warehouses and other
1. On -going
building areas.
2. Conduct employee training.
2. Annual
Preventative
1. Weekly inspection of the processing areas and schedule timely
1. On -going
Maintenance
hauling (disposal) of the waste materials.
2. Inspect chemical containers and equipment for any potential
leaks/spills.
2. On -going
Inspection
1. Conduct visual inspection of the facility and record the inspection
1. Semi-annual
results using the record sheet provided.
Spill Prevention and
1. Maintain a readily available supply of spill/leak clean-up kit
1. On -going
Response
materials.
2. Inform employees about MSDS info.
2. Annual
Sediment and Erosion
1. Keep areas seeded/grassed.
1. On -going
Control
2. Regrade and seed site to minimize erosion.
2. On -going
Management of Storm
1. Maintain the storm water drainage ditches and keep clear of debris.
1. On -going
Water Runoff
2. Build curbing around processing areas.
2. On -going

NORTH CAROLINA
Cumberland County
AFFIDAVIT OF PUBLICATION
NC DIVISION OF WATER
QUALITY I rori-TO ISSUr:
A STORMWATER
DISCIM PERMIT
Riblic comment or objection
to the draft permit($) is invit-
ed. All comments received
prior to September 30, 2010
will he crnsidereL in the fi-
nal determittation regaret:ny,
permit issuance and permit
provisions. Submit women
comments to DWQ at:. r
DWQ Ssonnwaicr Ni-mitting
IJnit
Attn: (DWQ Contact as
shown under each Applica -
Tion)
1617 Mail Service Center
Raleigh. NC 276"-1617
Copics of the draft permit(s)
are available at:
http:!lh2o.enr.siate.nc.us1su1
publicootice.htm , Addition -
al ppecrtait documents are
available for the reproduc -
Lim cost at:
DWQ Stonnwaier Permitting
Unit
512 N. Salisbury Strew
Raleigh. NC 2 604
Application: Oak -Bari: Cor-
mimion (NCSM532). 333
Neils Eddy Rd, Riegelwood,
NC ?8456 has applied for an
NPC`S permit to discharge
stormwater Crum an industn -
al facility at; Oak -Sark Corp.,
333 Neils E ` Rd
T7te .
Rieggelwood, NC. facility
discltargn to Livingston
(scek
DWQ Contact: Bcthany
Gemgoulias
(919)-8P6372
bVitany.g eorgoulias @noden
,gm
Application: llexion Special -
tyy Chern"I. Inc.
(NC5000156). 333 Neils Eddy
Road, Riegelwood, NC 28456
has applied for an NPDLS
permit to discharge
siormwater from an indmen -
al Paciliry at: Hexion Special -
ttyy Chemicals, Inc. 333 Neils
My Road, Riegelwood, NC,
Columbus County. The fa-
cility discharges to both Liv-
ingston Creek and Mill
Creek.
DWQ Contact Jennifer
]ones
(919)f -6379
le n on fend a s ne@node m-g a v
AppppG�caiicxr Silar. L-C.
pVC:5000533), 333 Neils Eddy
Road. Riegelwood, NC 2M56
has applied for an NP17E5
[$snit 10 discharge
stormwater from an indnstn -
al fw'l tp at: Silar. I,LC, 333
Neils Eddy Rd. Riegelwood,
NC, Columbus County, The
facilityy discharges to Living-
ston
DWQ Contact: Brian Lowther
(919)-N07-6368
hria n. ]owt herC4 iYdenr.gov
NC DIVISION OF WATER
QUAASTC)RM ATERS5UT:
DISCHARGE PERMIT
Rl2.5, 2722789
Before the undersigned, a Notary Public of said County and state, duly
commissioned and authorized to administer oaths, affirmations, etc.,
personally appeared. CINDY L. OROZCO
Who, being duly sworn or affirmed, according to law, doth depose and say
that he/she is LEGAL SECRETARY
of THE FAYETTEVILLE PUBLISHING COMPANY, a corporation organized
and doing business under the Laws of the State of North Carolina, and
publishing a newspaper known as the FAYETTEVILLE OBSERVER, in the
City of Fayetteville, County and State aforesaid, and that as such he/she
makes this affidavit; that he/she is familiar with the books, files and
business of said Corporation and by reference to the files of said publication
the attached advertisement of CL Legal Line
INTENT TO ISSUE A STORMWATER DISCHARGE P
of NC DIVISION OF WATER QUALITY
was inserted in the aforesaid newspaper in space, and on dates as follows:
8/25/2010
and at the time of such publication The Fayetteville Observe-.- was a
newspaper meeting all the requirements and qualifications prescribed by
Sec. No. 1-597 G.S. of N.C.
The above is correctly copied from the books and files of the aforesaid
corporation and publication. n
Title
Cumberland County, North Carolina
Sworn or affirmed to, and subscribed before me, this 25 day
of August, A.D., 2010.
In Testimony Whereof, I have hereunto set my hand and affixed my
official seal, the day and year aforesaid.
akL1--b-4-0
Pamela H. Walters, Notary Public
My commission expires 5th day of December, 2010.
MAIL TO: NC DIVISION OF WATER QUALITY
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699
0002722789 -

AFFIDAVIT OF PUBLICATION
STATE OF NORTH CAROLINA
COUNTY OF NEW HANOVER
NC DIVISION OF WATER QUALITY
: INTENT TO 15 SU E;A_ STORM WATER-,}
DISCtiARGE,P.ERMIT tfxx.CjZ
Public Comment or objection -to the,
draft ,permit(s) is, invited. Allom- .
ments received, prior to. Septe ..
30,- 2010cwill: be�consideredrrnl the
final determination;.regardint3r:per-
mit issuance:anddpermit.proy!sions.
t5ubmif' written' commenat
ts;to•:DWQ'
DWQ Storrnwater}Perrnitting Unit
AttnrtDWQ'Coritect as•shown-i
{F Ul.under.each Application) 1' i.
1617 Mail Service Center, i,.
-e_• ^Raleigh; NCl27699.1617i ; ,� ,
Copies of the draft permit(s) : are
'avadable'at:Y•t�"��!� �-`�`r-� fi2�+ •1".
i
hCCpp lo.enr.sSale.ne, us Fsulpubknotice.hlm. Addltlonal .permit. documents are
available for the reproduction Cost
at: E
DWQ 5tormwater Permitting Unit`"
r 512.N:Sahsburx,St�eet.1 . .
for,an.NPDES perm¢,to;u'�"",y=
stormwater:)from an:industrial'.facil-,
ity at: Oak -Bark ,Corp..`-3335 Neils
wo
•Eddy Rd. Riegelod, NC; The facil-
'
itydischarges to Livingston Creek. ;
DWQ Contact: Bethany Georgoulias
b th n . eor ouli s ncdenr.
A ication.,.— sion . Specialty
h •(NC5000156),'333
Before the undersigned, a Notary Public of Said County and State,
Keith Raffone
Who, being duly sworn or affirmed, according to the law, says that he/she is
Controller
of THE STAR -NEWS, a corporation organized and doing business under the Laws of the State of
North Carolina, and publishing a newspaper known as STAR -NEWS in the City of Wilmington
NC DIVISION OF WATER QUALITY INTENT TO ISSUE A STORMWATER DISCHARGE
PERMIT Public comment or objection to the draft permits is invited. All comments received --
prior to September 30, 2010 will be considered in the final determination regarding permit
lssuan
was inserted in the aforesaid newspaper in space, and on dates as follows:
J 81261x
C emicals, , Inc-
Neils. Ed dyk Road,- ' iegeivrood, NeS And at the time of such publication Star -News was a newspaper meeting all the requirements and
28456 has, -'applied -for arr NPDE
ppermit__.to-wdischarge..stormwater qualifications prescribed by Sec. No. 1-597 G.S. of N.C.
from an industrial, facility;at: Hexion
Specialty-,Chemicals,ll nc. , 333: N eils .
Eddyy; Road: Riegelwood,• NC, Co-,
lumbus'-Caunty..; The-.faunty-.dis-
_ -­ . ;, ­tW Livingston? Creek'
IlAl
and Mill Cre ,
DWQ CO
r 'IeTnifei
Appli[at�on:
(N 000053.
Rlegelwood.
for.ran NPD
stormwater
ity at: Silar,
ict ]enniter.]ones � tf- Title: Controller
).e07,6379.•" a S orn or affirmed to, and subscribed before me this r1 day of
�e ncdenr. ov `-'s•
SI ari: `F• .:: LLC:;' A.D., . d (y
333-Neils Eddy Road.%
C 28456-.has- applied;
permit, to -discharge: In Te imony Whereof, I have hereunto set my hand and affixed my offi(iait
im an industrial facil-.I ear aforesaid. 1
C,.333 Neils Eddy Rd--
b s' County,
y and
.Riegelwood, ' NC; COIUm u, � `D t
The facility discharges to tivingston. ^^
Creek. r � w `�tQTAP )% �'4`�
DWQ contact: Brian Lowther
(g19)-807-6368 , , _ Notary Pubbc
>J�ian.lowt er ncdenr.00v;;
My commission expires T day of , 20 ? rt) 31r!�'
'"'Z rV ER G rtt5��s�`s
Upon reading the aforegoing affidavit with the advertisement thereto annexed it is adjudged by the Court t�tmfie said
publication was duly and properly made and that the summons has been duly and legally served on the defendant(&).
This day of
Clerk of Superior Court
MAIL TO:

NCS00015h
Recommendations: Based cn the documents reviewed, the application information submitted on August 3, 2004
is sufficient to issue an Individual Stormwater Permit.
Prepared by (Signature) Date V • �rQ
Stormwater Permitting Unit Supervi r c— bate `� 20 f iJ
for Bradley fide ett
Concurrence by Regional Office _ �Y:-��� �,,'41 Date 4_ ! L;
�:
RO Water Quality Supervisor�r� Cr�fLj 1� L_-`t Date < 7� c C- ` �' % Z C' 1
Regional Office StJf Comments (attach additional pages as nerLssary)
.J {'< i`C�:^ ri� . ���C ti_ _l-L _+ ram• `.�_�-}�.� i _ 1�t.1� r' `.L,�1 �C� �•
��1Yu`—'[�ll-�k.�`•r�L.� .�'i�:_t�ilt.�i1\.l.r��`_� '{�tk.;{w1e,.:ilzi�.l,r��`L C1-%+rR�•�- `�13:.LrilL�
L'Vlr + "
G1:J'F CA CCr f✓:. � d YrW '� �, � titi�t �, �-t C1�C ��J L� �..�` �r .M
�i'..a_:ti, �L Cti.. CL,�+.J L%�4 .",�.rC.` C� �1tLl�� ,r �:.C•- � ' �
a
�ICJS�L�iai�_r�i lam)? .._`.tL�� '���i LL
•.��^N i'._f �i.,r�, �Jk.\_7'n ill _''li_(�i: I, C.-C. LLAS
y.11
�-ti; trC1 �++_
�O t=.�...�-5��,'n-U.Y' .� • �"�r_ �1,-o`a�_: ram. ��������L `a•`�C�'_��.�t� i,J�3•�.
'�; yak._ � �1 �'-' � �'LCL�-rtS�• �. r . ..
] TY�t�«_S2 �T L��cL�RE_i±•�L�tL��� 1 L��LctStLi�l �l�st� r��rr��
NG
l t7 1 C" C z✓ L �= h -�`_
t-t
-'- n" L �\ 4_ i—t-t iLv i 'rt
f= C- c l� r �lS 1-� t f-t7 Mc <L-cl i-t--t
1'u+e 13 of 13

Please print or type in the unshaded areas only
Pick If__
(fill-in areas are s aced for elite type, i.e., 12 characte>srnch . ro► npprovea. unnD
NO. ZU4U-UUt5O. Approval expires o-si-U[
FORM 1
U.S. ENVIRONMENTAL PROTECTION AGENCY
I. EPA I.D. NUMBER
���
GENERAL INFORMATION
F
NCD 024 766 719 T1A D
Consolidated Permits Program
1
2 13 14 J 15
GENERAL
Read the "General Instructions" before starting.)
LABEL ITEMS
GENERAL INSTRUCTIONS
!f a preprinted label has been provided, affix it
I. EPA I.D. NUMBER
NCD424766719
in the designated space. Review the
information carefully; if any of it is incorrect,
cross through it and enter the correct data in
III. FACILITY NAME
Oak- Bark Corporation
the appropriate fill-in area below. Also, if any of
the preprinted data is absent (the area to the
information
left of the label space fists the that
V. FACILITY
should appear), please provideit in the proper
fill-in area(s) below. If the label is complete and
MAILING LIST
Attn: Peter R. Yurgel
correct, you need not complete Items I, Ill, V
and VI(except VI-B which must be co►npleta4�
regardless). Complete all items if no label has
instructions for
VI. FACILITY
333 Neils Eddy Rd.
been proved. Refer to the
detailed item descriptions and for the legal
authorization under which this data is collected.
LOCATION
Riegelwood N.C. 28456
II. POLLUTANT CHARACTERISTICS
INSTRUCTIONS: Complete A through J to determine whether You need to submit any permit application
forms to the EPA. if you answer "yes" to any
questions, you must submit this form and the supplemental from listed in the parenthesis following the question.
Mark "X" in the box in the third column if the
supplemental form is attached. If you answer "no" to each question, you need not submit any of these
forms. You may answer "no" if your activity is
excluded from permit requirements; see Section C of the instructions. See also Section D of the instructions
for definitions of bold-faced terms.
MARK "X"
MARK "X"
SPECIFIC QUESTIONS
SPECIFICSPECIFIC QUESTIONS
YES
NO
YES
NO
FORM
ATTACH
ATTACHED
A. is facility a publicly owned treatment works
. Does or will this facility (either existing or
which results in a discharge to water; of the
❑
®
1-1
proposed) include a concentrated animal
Z
El
U.S.? (FORM 2A)feeding.
operation or aquatic animal
production facility which results in a discharge
to waters of the U.S.? (FORM 213)
16
17
16
19
20
21
C. s this facility which currently results in
El
El.
Is this proposal ciiity (other than those described
discharges to waters of the U.S. other than
in A or B above) which will result in a discharge
22
23
24
25
26
27
those described in A or l3 above? FORM 2C
to waters of the U.S.? FORM 2D
E. or vh{i this acility treat, stare, or dispose of
hazardous wastes? (FORM 3)
F. Do you or will you inject at this tacility industrial or
municipal effluent below the lowermost stratum
❑
®
❑
Elcontaining,
121
El
within one quarter mile of the well
bore, underground sources of drinking water?
28
29
30
(FORM 4)
31
32
33
you or well you inject at this facility any
H. Do you or wi I you inject at this fatality fluids or
produced water other fluids which are brought to
the surface in connection with conventional oil or
❑
®
❑
special processes such as mining of sulfer by the
Frasch process, solution mining of minerals, in
❑
®
❑
natural gas production, inject fluids used for
situ combustion of fossil fuel, or recovery of
enhanced recovery of oil or natural gas, or inject
geothermal energy? (FORM 4)
fluids for storage of liquid hydrocarbons?
135
36
37
38
39
FORM 4
I. Is this facility a proposed stationary source
J. Is this facility a proposed stationary source
which is one of the 28 industrial categories listed
which is NOT one of the 28 industrial categories
❑ ® ❑ ❑ ® ❑
in the instructions and which will potentially emit
listed in the instructions and which will potentially
100 tons per year of any air pollutant regulated
emit 250 tons per year of any air pollutant
under the Clean Air Act and may affect or be
regulated under the Clean Air Act and may affect
located in an attainment area? FORM 5
40 41 42 nr be located in an attainment are? FORM 5 43 44 45
III. NAME OF FACILITY
SKIP Sitar LLC
U15P
1rr29 30
69
IV. FACILITY CONTACT
A. NAME & TITLE last, first, &title
B. PHONE area code & no.
Peter R. Yurgel / Plant manager
5 6980
2
"4849'57 1 52 55
15 16
45
V. FACILITY MAILING ADDRESS
A. STREET OR P.O. BOX
c
333 Neils Eddy Rd.
D. ZIP CODE
28456
1s
1 16
45
B. CITY OR TOWN
C. STATE
c Riegelwood
N. C.
4
15 1 16
40 1 1 41 42
47 51 _
VI. FACILITY LOCATION
A. STREET, ROUTE NO. OR OTHER SPECIFIC IDENTIFIER
c
333 Neils Eddy Rd.,
15 1.16
45
B. COUNTY NAME
Columbus
46
70
C. CITY OR TOWN
D. STATE
E. ZIP CODE
F. COUNTY CODE
C
Riegelwood
N.C.
28456
Columbus
s
15
16
40
41 42
47 51
52 54

I-)

CONTINUED FROM THE FRONT
VII. SIC CODES 4-di it, in order of tiotit
A. FIRST B. SECOND
C
2869
(specify)
(specify)
7
t5
tfi 17
C. THIRD D. FOURTH
::::
specify) (specify)
617
VIII.OPERATOR INFORMATION
A. NAME I B. Is the name listed in Item'
c Silar LLC VIII-A also the owner?
8 YES X NO
1e 19 55
C. STATUS OF OPERATOR Enter the appropriate letter into the answer box; if "Other," a
D. PHONE area code & no.
F = FEDERAL M = PUBLIC (other than federal or state) P
(specify)
910
655
6980
A
S = STATE O = OTHER {specify}
16 18
19 21
22 25
P = PRIVATE 56
t5
E. STREET OR PO BOX
333 Neils Eddy Rd.
26 55
F. CITY OR TOWN
G. STATE H. ZIP CODE iX. INDiAN LAND
c
Riegelwood
N.C. 28456 Is the facility located on Indian lands?
❑ YES ® NO
42 42 47 51
B
15 1 16 40
X. EXISTING ENVIRONMENTAL PERMITS
A. NPDES (Discharges to Surface Wate
D. PSD fAir Emissions from Proposed Sources
9 P 09749ROO Synthetic Minor Air Permit
c
N
'
N/A
15 1 16 1 17 1 18 30
15
16
1 17
1 18 30
B. UIC (Underground Injection of Fluids
E. OTHER:
(Specify)
1
N/A
T
° N/A
9
U
9
15
16
17
18 30J
15
1 18
1 17 18 30
C. RCRA Hazardous Wastes E. OTHER s (Specify)
1 NCD024766719 9 T 9 N/A
9 R
15 1 16 1 17 1 18 30 1 15 1 16 f 17 18 30
XI. MAP 1 Emi
Attach to this application a topographic map of the area extending to at least one mile beyond property boundaries. The map must
show the outline of the facility, the location of each of its existing and proposed intake and discharge structures, each of its
hazardous waste treatment, storage, or disposal facilities, and each well where it injects fluids underground. Include all springs,
rivers and other surface water bodies in the map area. See instructions for precise requirements.
XII. NATURE OF BUSINESS(provide a brief description)
Silar LLC (a division of MPD Holdings) manufactures Organosilicon compounds and Fine organics using batch
processes.
XIII. CERTIFICATION see instructions
i certify under penalty of law that 1 have personally examined and am familiar with the information submitted in this application and
all attachments and that, based on my inquiry of those persons immediately responsible for obtaining the information contained in
the application, l believe that the information is true, accurate and complete. 1 am aware that there are significant penalties for
submitting false information, incluqinS the possibility of fine and imprisonment..-,
A. NAME & OFFICIAL TITLE (type or print) B. [ NAVE
C. D TE SIG ED
John Shibley / President
S 2 ? b 9
COMMENTS FOR OFFICIAL USE ONLY
c
C
15 15 55

EPA ID Number (copy from Item f of Form 1) Form Approved OMB No. 2040-0086
Please Ixint or tvoe in the unshaded areas only. NCD 024 766 714 Anoroval excites 5-31-92
2nicy
FORM
F
NPDES
A U.S. E N rn"OR LAC 24460rcinmemal Protection �e
EPA Application for Permit to Discharge Storm Water
Discha es Associated with Industrial Activity
Paperwork Reduction Act Notice
Public reporting burden for this application is estimated to average 28.6 hours per application, including time for reviewing instructions, searching existing data sources,
gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding the burden estimate, any other aspect
of this collection of information, or suggestions for improving this form, including suggestions which may increase or reduce this burden to: Chief, Information Policy
Branch, PM-223, U.S. Ermironmental Protection Agency, 1200 P9rnsyNmw*a Avenue, NW, Washington, DC 2DM, or Director, Office of Information and Regulatory
Affairs, Office of Management and Budget, Washington, DC 20503.
1. Outfall Location
For each outfall, list time latitude and longRuda ct its IOCatlpn to the nearest 15 mcurds armd the name of the reDeMng Vrater.
A. Outfall Number
s
B Istrtude
C. Longitude
t). Receiving Water
(name)
001
-44-001
19.00
69.00
78.00
12.00
2-00
Livingston Creek
002
34.001
19.00
71.00
78.00
12.00
8.00
Livingston Creek
005
34.00
19.00
76.01)
78. 00
12.00
6.00
Livingston Creek
It. lm rorfements
A Are you now required by any Federal, State, or local authority to meet any irpiemermtatlon schedule for the construction, upgrading or operation of wastewater
treatment equipment or practices or any other environmentat programs which may affect the discharges described in this application? This includes, but is not limited
to, permit conditions, administrative or enforcement orders, enforcement compliance schedule letters, stipulations, court orders, and grant or ban conditions.
1. Iderditication of Conditions
Agreements, Etc_
2 Affected Qutfails
3. Brief Description of Project
4.
ComplianrcelDate
number
source of discharge
Not applicable
B: You may attach additional sheets describing any additional water pollution (or tither environmental projects which may affect your discharges) you now have under
way or which you plan. Indicate whether each program is now under way or planned, and indicate your actual or planned schedules for construction.
III. Site Drainage Map
Attach a site map showing topography (or indicating the online of drainage areas served W the outfalls(s) covered in the application if a topographic map is unavailable)
depicting the facility including: each of its intake and disc rge structures; the drainage area of each strum water outfall; paved areas and buildings within time drainage
area of each storm water outfall, each known past or present areas used for outdoor storage d disposal of significant rrafedals, each emosting structural control measure
to reduce pollutants in storm water runoff, materials loading and access areas, areas where pesticides, herbicides soil conditioners and fertilizers are applied; each of
its hazardous waste treatmerl, storage or disposal units (including each area not required to have a RCRA permit which is used for accumulating hazardous waste
under 40 CFR 262.34); each well where fluids from the facility are injected underground; springs, and other surface water bodies which received storm water discharges
from the facility.
EPA Form 3510-2F (1-92) Page 1 of 3 Continue an Page 2

Continued from the Front
IV. Narradve Descripdon of Pollutant Sources
A. For each outfall, provide an estimate of the area (IncWde units) at Impenous surfaces (including paved areas and building roots) drained in the ounfl. and an estimate of the blal surface area
drained by the ou tfall.
Zaal
Area or Impervious Surface
Total Area Drained
Outfal
Area of Impervious Surface
Total Area Drained
Number
(Provkle un"
{ A e ants)
Number
(PruAle unto)
(Accrue taut)
001
17,670 square feet
211,220 sq. feet
0a2
24, 158 aqua re feet
24,150 aq. feet
005
15,119 square feet
4.1 560 sq. feet
B. Provide a narrative description of significant materials that are currently or in the past three years have been treated, stored or disposed in a mariner to allow exposure
to storm water method of ireatmerr4 storage, or disposal; pest and present materials management practices employed to rrunintze contact by these rnatenals with
storm water runoff; materials loading and access arms, and the location, manner, and frequency in whirr pesticides, herbicides, soil conditioners, and fertilizers are
applied.
See Attachments: A: SWO01,SW002 & SW005
C. For each outfall, provide the location and a description of existing structural and nonstructural control measures to reduce pollutants in storm water runoff, and a
desorption of the treatment the storm water receives, including the schedule and type of maintenance for control and treatment measures and the ultimate disposal
of any solid or fluid wastes other than by discharge.
Cutfall
List Codes from
Number
Treatmert
Table 2F-1
4-A
SW 001 Silar Drum Whse: Housekeeping Training / Monthly Audits by RHS
SW002 Silar ( Pine Chem tab: Housekeeping Training / Monthly Audits by ZRs
SW 005 N. Side of Silar Plant: Housekeeping Training / Monthly Audits by rHS / Relocated Drum Rinse
Station to a contained Area
V. Nonstormwater Discharges
A. I certify under peralty of law hat the outfall(s) covered by this application have been tested or evaluated for the presence of nonstorm water discharges, and that all
nonstornTwater discharged from these outfall(s) are ' ntified in either a accorrHying Form 2C or From ZE application for the ovtfall.
Name and Official Title (type or print)
i
Date Si
.Tohn Shibley / Preident
/end
S / f\
B_ Provide a description of the method used, the date of any testing and the onsite drainage points that were clifectly observed clurling a test
l.On December 6, 2007, a visual observation was conducted on Outfalls 002. a85, and 007- During this visual observations, it
was noted that there were no additional discharges to these outfalls- (Inspection conducted with no rain present)
2.0r. October 21, 2008, a visual observation was conducted on Outfalls 002, 005, and 007. During this visual observation, it was
noted that there were no additional discharges to these outfalls, (Inspection conducted with no rain present)
3.0n April 01 & 02 a visual observation was conducted on Outfail 007- This observation was conducted during a rainfall event. It
was noted that there was no Outtall from this source. All runoff was retained in the small retention pond south of the
outfall.It was also observed that there was no indication of oil sheen.
1. Significant Leaks or Spills
Provide existing Information regarding the history of significant leaks or spills of tonic or hazardous poltutarts at the facility in the last three years, including the
approximate date and location of the spill or teaK and the type and amount of material released
o sisnificant spills or leaks occurred in the last three years
EPA Form 3510-2F (1-92) Page 2 of 3 Continue on Page 3

i � _ _ .!. :i i t _ __ _
_, Y i � U'v.V� .. .. _.. .. _,
,.. � � t ,.

Continued from Page 2 NCDO24P766771gumber (copy from Item 1 of Form f)
II. Discharge Information
A, B, C, & D: See instructions before proceeding. Complete one set of tables for each outfall. Annotate the outfall number in the space provided.
Table VII-A, VII-B, Vlf-C are included on separate sheets numbers VII-1 and VH-2.
E. Poterrtial discharges not covered by analysis — is any toxic pollutant listed in table 2F-2, 2F-3, or 217-4, a substance or a component of a substance which you
currently use or manufacture as an intermediate or final product or byproduct?
© Yes (list all such pollutants below) ❑ No (go to Section IX)
SW 001 , SWO02 & SW005: Chlorine, Magnesium, Chloroform, Methylene Chloride, Tetrachloroethylene, Toluene, Allyl
chloride,Diethylamine, Dimethylamine, Styrene, Triethylamine, Trimethylamine, Vinyl acetate, Xylene,
Ill. Biological Toxicity Testing Data
Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on any of your discharges or on a receiving water in
relation to your discharge within the last 3 years?
❑ Yes (list all such pollutants below) Q No (go to Section 1X)
IX. Contract Analysis Information
Were any of the analyses reported in Item Vlf performed by a contract laboratory or consulting firth?
© Yes (list the name, address, and telephone number of, and pollutants
❑ No (go to Section X)
analyzed by, each such laboratory or firm below)
A. Name
B. Address
C. Area Code & Phone No.
D. Pollutants Analyzed
Oxford Labs
1316 S. 5th Street
910-763-9793
All data through 4/2007
Wilmington, NC 29401
Environmental Chemists, Inc.
6602 Windmill Way
910-392-0223
All data after 4/2007
Wilmington, NC 2B405
X. Certification ww"
l ceftify under, penalty of law that this document and aft attachments were prepared under my drection 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, hue, accurate, and complete. I am aware that
there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.
A. Name & Official Title (Type Or Print)
B. Area Code and Phone No.
John Sh'bley, President
[phone]
C. sign
ig
yt-- I
D. pate Signed �
log
-Tu—(��
S �
EPA Ford 351O-2F (1-92) Page 3 of 3

EPA ID Number (cWy from Item f d Form f) Form Approved. OMB No. 2040-D086
Cp024766719 I ADorwal expires 5-31-92
VIL Discharge information (Continued from page 3 of Form 2F)
Part A —You must provide the results of at least ore analysis for every pollutant in this table. Complete one table for each outfall. See instrurbons for additional details.
Pollutant
and
CAS Number
(if available)
Maximum Values
(indrx7e units)
Average Values
iodate Lrws)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
01 and Grease
NIA
Biological Oxygen
Demand(BOD5)
Bee atacirrnen[ B
Chemical Oxygen
Demand (COD)
Total Suspended
Solids (rSS)
Total Nitrogen
TotalPhosphoruis
pH
Minimum
Mann um
Minimum
Maximum
Part B— list each pollutant that is limited in an effluent guideline which the facility is subject to or any pollutant listed in the facility's NPDES permit for its process
wastewater (if the facility is operating render an existing NPDES permit). Complete one table for each outfall. See the instructions for additional details and
requirements.
Pollutant
and
CAS Number
(d available)
Maximum ValueS
(rndude units)
Average Values
(indude rots)
Number
of
Storm
Events
Sarnoed
Sources d Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow Weighted
composite
Grab Sample
Taken During
First 20
Minutes
Flow -weighted
Composite
N/A
EPA Form 3510-2F (1-92) Page VII-1 Continue on Reverse

Continued from the Front
Part C - list each pollutant shown in Table 2F-2, 217-3, and 2F-4 that you know or have reason to believe is present See the instructions for additional details and
requirements. Complete one table for each outfall.
Pollutant
and
CAS Number
(it available)
Maximum Values
(inGud'e units)
Average Values
(include ems)
Number
of
Storm
Events
Sampled
Sources of Pollutarrt6
Grab Sample
Taken During
First 20
Minu6ss
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Mmutes
Flow -Weighted
Composite
See attachment C
Pail D — Provide data for the storm event(s) which resWted in the maximum values for the flow weighted composite sample.
1-
Date of
Storm
Event
2,
Duration
of Storm Event
(in minutes)
3.
Total rainfall
during storm event
(in inct—)
4_
Number of hours between
beginning of storm measured
and end of previous
measurable rain event
5_
Maximum flow rate during
rain event
(galbns4nkiute or
specify units)
6.
Total flow from
rain event
(gallons Cr specify units)
B/s/2006
85 minutes
1.1 inches
108 hours
0.099 Ma
0.216 MG
7. Provide a description of the method of flow rneasuremerd or estimate.
The total flow during a rain event was estimated from the drainage area of each outfall and total precipitation -
EPA Form 3510-2F (1-92) Page VII-2

---
85 '+�z
�bSSsa'tZ
L
0
c

Attachment A SW001, SW002 & SW005
EPA Form 2F — item IV-B
The following materials are or have been stored within the affected area of Oak-Bark's Storm Water Outfall SW002. The storage
areas are either covered, with built in secondary containment or uncovered with secondary containment. Containments are managed to
prevent overflows and are tested before any rain water is released.( See attachment "E")
Material
State
Category
Primary
Best
Material Handling
Containment
Management
Practice
Acetic Anhydride
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Acetone
Liquid
Cleaning
Drum/Tote
Stored in
Delivered by van;
solvent
warehouse
transported to plant
via fork truck
Ally] Amine
Liquid
Raw
Cylinder
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Allyl Bromide
Liquid
Raw
Cylinder
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Allyl Chloride
Liquid
Raw
Cylinder
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Allylchloroformate
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork
Allylcyanide
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
All l l cid lether
j Liquid
1 Raw
Drum
Stored in
Delivered by van;

Attachment A SW001, SW002 & SW005
EPA Form 2F — item IV-B
material
warehouse
transported to plant
via fork truck
Aminophenol
Powder
Raw
Carboy
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Benzaldehyde
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Benzylmagnesiumchloride in TIAF
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
n-Butyl Alcohol
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork
1-Butene
Gas
Raw
Cylinder
Stored in
Delivered by van;
Material
cylinder rack
transported to plant
via fork truck
Caustic Soda
Liquid
Raw
Tote/Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Chlorine
Gas
Raw
Cylinder
Stored in
Delivered by van;
Material
Oxidizer rack
transported to plant
via fork truck
Diallylmaleate
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck

Attachment A SW001, SWO02 & SWO05
EPA Form 2F — Item lV-B
Diethylamine
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Dimethylamine
Gas
Raw
Cylinder
Stored in
Delivered by van;
material
cylinder rack
transported to plant
via fork truck
Dimethylformamide
Liquid
Solvent
Drum
Stored in
Delivered by van;
warehouse
transported to plant
via fork truck
Dodecene
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Dodecylamine
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
transported
Ethanol
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Ethyl ether
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Ethyl cyanoacetate
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Glacial Acetic Acid
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Heptanes
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Hepanes
Liquid
Raw
Drum
Stored in
Delivered by van;

Attachment A SWOO1, SWO02 & SWO05
EPA Form 2F -- Item IV-B
Material
warehouse
transported to plant
via fork truck
Hexene
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Isopropanol
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Esopropylamine
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Magnesium Chips
Solid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Magnesium Sulfate
Powder
Raw
Bag
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Mesitylene
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methacrylic Anhydride
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methacrylic Acid
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methanesulfonylchloride
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methanol
Liquid
Raw
Tote/drum
Stored in
I Delivered by van;

Attachment A SWOO1, SW002 & SW005
EPA Form 2F — Item IV-B
Material
warehouse
transported to plant
via fork truck
Methyl-t-Butylether
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Methylene Chloride
Liquid
Raw
dram
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
n-Decene
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
n-Octene
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
n-Octadecene
Liquid
Raw
drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
2-Octanol
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Octylamine
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
p-Methoxybenzylchloride
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Pentane
Liquid
Raw
drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Perox acetic Acid
Liquid
Raw
Drum
Stored in
Delivered by van;

Attachment A SW001, SW002 & SW005
EPA Farm 2F — Item IV-B
Material
warehouse
transported to plant
via fork truck
Perfluorooctylethylene
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Phenylmagnesiumchloride in TUF
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Phosphorouspentachioride
Solid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Potassium Methylate 25% in Methanol
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Silicone Fluid
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Soy Bean Oil (epoxidated)
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Sodium Methylate 25% in Methanol
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Tetrachloroethane
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Tetrahydrofuran
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Thionylchloride
Liquid
Raw
Drum
I Stored in
Delivered by van;

Attachment A SW001, SWO02 & SWO05
EPA Form 2F — Item IV-B
material
warehouse
transported to plant
via fork truck
Toluene
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Triethylamme
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Triethylorthoformate
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Trimethylorthoformate
Liquid
.Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Xylenes
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Ethylacetate
Liquid
Raw
Drum
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Vinylchloroformate
Liquid
Raw
Bottle
Stored in
Delivered by van;
material
warehouse
transported to plant
via fork truck
Allylbenzamidine
Liquid
Raw
Cylinder
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Aminopropyltriethoxysilane
Liquid
Raw
Drum
Stored in
Delivered by van;
Material
warehouse
transported to plant
via fork truck
Amino ropyltris(trimeth lsilox )silane
Liquid
Product
Drum
warehouse
I Manufactured

Attachment A SW001, SW002 & SWOOS
EPA Form 2F — Item IV-B
Bisaminopropyltetramethyidisitoxane
Li uid
Product
Drum
warehouse
Manufactured
Bistrimethox sit 1 ro Ifumarate
Liquid
Product
Drum
warehouse
Manufactured
But ldimeth lchlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Chlorometh ltrimeth lsilane
Liquid
Product
Drum
warehouse
Delivered by van
ChloroproRyltrimethoysilane
Liquid
Product
Drum
warehouse
Delivered by van
Decameth Itetrasiloxane
Liquid
Product
Drum
warehouse
Delivered by van
Dibut ldichlorosilane
Liquid_
Product
Drum
warehouse
Manufactured
Dibut ldimethox silane
Liquid
Product
Drum
warehouse
Manufactured
Dieth laminotrimeth lsilane
Liquid
Product
Drum
warehouse
Manufactured
Diisopropylaminodimethylsilane
Liquid
Product
Drum
warehouse
Manufactured
Dimeth lchlorosilane
Li uid
Product
Cylinder
warehouse
Delivered by van
Dimethyjdichlorositane
Liquid
Product
Cylinder
warehouse
Delivered by van
Dioct ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Di hen ldichlorosilane
Liquid
Product
Cylinder
warehouse
Manufactured
Divin ltetrameth Idisiloxane
Liquid
Product
Drum
warehouse
Delivered by van
Dodec (meth ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Eth ltrichlorosilane
Li uid
Product
Cylinder
warehouse
Delivered by van
He tadecafluordec ltrichlorosilane
Liquid
Product
Bottle
warehouse
Manufactured
He tadecafluordec ltrimethox silane
Liquid
Product
Bottle
warehouse
Manufactured
He tameth ltrisiloxane
Liquid
Product
Drum
warehouse
Delivered by van
Hexameth Idisilane
Liquid
Product
Drum
warehouse
Delivered by van
Hexameth idisilazane
Liquid
Product
Drum
warehouse
Delivered by van
Hexameth ldisiloxane
Liquid
Product
Drum
warehouse
Delivered by van
He (meth ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Linear Phos honitril Chloride in Siloxanes
Liquid
Product
Drum
warehouse
Manufactured
Methacryloxypropyltristrimethylsilonsilane
Liquid
Product
Drum
warehouse
Manufactured
Meth ldichlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Meth ltrichiorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Octadec Idimeth lchlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Octadec lmeth ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured

Attachment A SW001, SW002 & SW005
EPA Form 2F — Item IV-B
Oct adec ltrichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Octameth Ic clotetrasiloxane
solid
Product
Drum
warehouse
Delivered by van
Octameth ltrisiloxane
Liquid
Product
Drum
warehouse
Delivered by van
Oct lc anoacetate 2
Li uid
Product
Drum
warehouse
Manufactured
Oct ldimeth lchlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Oct lmeth ldichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Oct ltrichlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Phenyl dimet hlchlorosilane
Li uid
Product
Drum
warehouse
Manufactured
-Metho be ltrichlorosilane 50% in Toluene
_
Liquid
Product
Drum
warehouse
Manufactured
Tetrac hlorosi lane
Li uid
Product
Cylinder
warehouse
Delivered by van
Tetrameth ldisiloxane
Liquid
Product
Drum
warehouse
Delivered by van
Trichlorosilane
Li uid
Product
Cylinder
warehouse
Delivered by van
Trieth lchlorosilane
Liquid
Product
Drum
warehouse
Manufactured
Trieth lsilane
Liquid
Product
Drum
warehouse
Delivered by van
Triisopropylsilane
Liquid
Product
Drum
warehouse
Delivered by van
Trimeth lchlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Vin ldimeth lchlorosilane
Li uid
Product
Drum
warehouse
Delivered by van
Vin lmeth ldichlorosilane
Liquid
Product
Drum
warehouse
Delivered by van
Vin ltrichlorosilane
Liquid
Product
Cylinder
warehouse
Delivered by van
Polyphosphoric Acid
Liquid
Raw
Material
Drum
warehouse
Delivered by van
Hexafluoroisopropanol
Liquid
Raw
material
Drum
warehouse
Delivered by van
Bishexafluoroisoprpylitaconate
Liquid
Product
Drum
warehouse
Manufactured
Vinyloacarbonylpropyltristfimethylsiloxysilane
Liquid
Product
Bottle
warehouse
Manufactured
Therminol D12
Liquid
HTF
Drum/plant
systems
Warehouse/plant
Delivered by van
Propylene Glycol
Liquid
HTF
Drum/Plant
s stems
Warehouselplant
Delivered by van

Attachment A SW001, SW002 & SW005
EPA Form 2F — Item IV-B
HE-200 Oil Liquid Vacuum Drum/lab Warehouse/Lab Delivered by van
Pum s

Attachment "B'
EPA From 2F Sect. VI I, Part A
Outfaii 001
1of 1)
Iola,
Total Flow
BOO
COD
TSS
NH3
TKN
NO3+NO2
calculation
I
Total Lead
Formaldehyde
Hexamine
Total P
I
Event
I
Total Event
Date
(MO)
pH
(mg1L)
(mg/L)
{mg1L)
(mg1L)
(mg1L)
(mg1L)
(mg1L)
(mglL)
(mg1L)
(mg1L)
(mglL)
Duration (h)
Precipitation (in)
6/1212007
0.0831
0.3
'121
871
491
4.21
651
5.81
12,31
0.0121
0.366
a1,0
1 0.821
0.671
0.91
Outfell 002: Leh Weir
Date
Total Flow
(MG)
pH
SOD
(mgiL)
COD
(mglL)
TSS
(mg1L)
NH,
I (mg1L)
TKN
(m91L)
NO3+NO2
(m91L)
Total
calculation
(mg1L)
Total Lead
(mg1L)
Formaldehyde
(mg1L)
Hexamine
(mg1L)
Total P
(mg/L)
Event
Duration (h)
Total Event
Precipitation (in)
3121/2006
0.023
7.53
226
$02
ligi
137
146
2.0
148.0
0.010
14
235
0.83
0.48
4/3/2006
0.018
6.35
274
563
91
38
68
3.9
69.9
0.007
1
217
0.92
0.37
8/8/2008
0.052
7.07
82
153
48
20
27
1.1
28.1
0.004
0,085
3
1.42
1.1
1111161200131
O.D271
7.561
511
245
49
30.9
38.1
J 1.31
39.41
0.0031
17.4
22-51
1 0.751
0.57
2/1120071
0.0481
7,441
1021
261
93
46
47,71
1.81
49.5
j 0.0051
13.21
24.61
16,081
1,02
6112/20071
0.0431
8.5L
7601
8730
162
290
19541
1.31
1955.31
0.009
7.15
0.171
0.671
0.91
Maximum
1 0.0521
7.561
7601
87301
1621
2901
19541
3.91
1955.311
0.011
17.4137501
0.171
6.081
1.1
Ayers
0,035
249,17
1797.33
93.87
93.32
379,80
1.90
381.70
0.01
8.81
708.72
0,17
1,78
0.74
Outfall 605, Shane Weir
Date
Total Flow
(MG)
pH
SOD I
(mg1L)
COD
(mg1L)
TSS
(mg1L)
NH,
(mg1L)
TKN
(mg1L)
NO3+NO2
(mgJQ
a
calculation I
(mg1L)
Total Lead
(mgiL)
Formaldehyde
(mg1L)
Hexamine
(mg1L)
Total P
(mg1L)
Event
Duration (h)
Total Event
Precipitation (in)
3/21/2006
0.029
7.71
86
447
114
41
46
1.1
47.1
0.011
13
46
0.83
0.48
4/312006
0,022
5.96
123
164
23
23
23
2.3
25.3
0,003
1
44
0.92
0.37
8/812006
0,065
6.58
52
122
38
15
20
0.6
20.6
0.005
0.05
2
1.42
1.1
11116t2006
0.0341
5.48
24
54
13
9.1
10.1
1.7
11.8
e0.003
3,26
3.96
0.75
0.57
2/ 112007
0.0611
6.61
16L
60
281
0,091
10.61
1,11
11.7j
0.003j
6.15
6.63
fi.08
1.02
2I12007 a
0.061
8.6
16
71
26
9,24
9,42
3.7
13,1
0.004
7.07
4.51
0.18
6,08
1.02
6/1212007
0.054
6.46
9
68
4
6.3
9.5
2.3
11.8
0.007
3.89
8.15
0.54
0.67
0.91
Maximum
1 0.0651
8.61
1231
4471
1141
411
461
3.691
47,11
0.0111
131
461
0.541
6.08
1.1
Average
1 0.0471
1 46.571
140.861
35A41
16.101
18.371
1.83
20-211
0.011
4.921
16,461
0.361
2.391
0.78

Attachment "C"
EPA Form 2F, Sect. C, part C
The pollutants from EPA Form 2F, tables 2F-2, 2F3 &2F-4 have not been analyzed for.
Samples will be pulled during the next storm water event and the results will be
forwarded to NCDENR.

Oak -Bark SWP3
WORKSHEET #1
BEST MANAGEMENT PRACTICES (BMPs) IDENTIFICATION
Completed by: W.E.(Red) Lewis
Title: Plt. Managerr
Date: April 2009
Instructions: Describe the Best Management Practices that you have selected to include in your plan. For each of the baseline BMPs,
describe actions that will be incorporated into facility operations. Also, describe any additional BMPs (activity -specific
and site -specific) that you have selected.
BMPs
Brief Description of Activities
Good Housekeeping
Storage of chemicals to minimize contact with storm water (under cover & on pallets); maintain clean working
areas; training of employees; minimize waste accumulation.
Preventative
Weekly inspections of bulk storage and chemical handling areas; monthly inspections of all containment/diking
Maintenance
structures.
Inspection
On a semi-annual basis, perform visual inspection to identify any potential problems that may cause storm water
contamination (e.g., leaks/cracks in dikes),
Spill Prevention and
Educate employee on proper handling of chemicals; inform employees about MSDS information and reporting
Response
procedures for any spill/leak incident; maintain a readily available supply of spill prevention kit materials (e.g.,
absorbent materials).
Sediment and Erosion
Regrade and seed the facility property as necessary to minimize erosion. Construction zones which involving land
Control
disturbment should be reseeded.
Management of
Build curbing to direct strom water around processing areas.
Runoff
Additional BMPs
Verify proper dike pump -out methods. Monitor chemical receiving of bulk chemicals and ensure safe &
(Activity- and Site-
environmentally neutral procedures are followed..
Specific)

Oak -Bark SWP3
W ORKSHEET 42
IMPLEMENTATION OF BMPs
Instructions: Develop a schedule for implementing each BMP. Provide a brief description of each BMP, the steps necessary to
implement the BMP (e.g., any construction or design), and the schedule for completing those steps (list
approximate dates).
BMPs
Description of Action(s) Required for Implementation
Scheduled
Notes
Completion Date
Good Housekeeping
1. Perform weekly sweeping of floors in the warehouses and other
1. On -going
building areas.
2. Conduct employee training.
2. Annual
Preventative
1. Weekly inspection of the processing areas and schedule timely
1. On -going
Maintenance
hauling (disposal) of the waste materials.
2. Inspect chemical containers and equipment for any potential
leaks/spills.
2. On -going
Inspection
1. Conduct visual inspection of the facility and record the inspection
1. Semi-annual
results using the record sheet provided.
Spill Prevention and
1. Maintain a readily available supply of spill/leak clean-up kit
1. On -going
Response
materials.
2. Inform employees about MSDS info.
2. Annual
Sediment and Erosion
1. Keep areas seeded/grassed.
1. On -going
Control
2. Regrade and seed site to minimize erosion.
2. On -going
Management of Storm
1. Maintain the storm water drainage ditches and keep clear of debris.
1. On -going
Water Runoff
2_ Build curbing around processing areas,
2. On -going

ff
SILAIa Lc
ISO ISO 9001:2000 Certified
June 2, 2009
Mr. Bradley Bennett
Division of Water Quality
Storm Water Permitting Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re: Request for a new Storm Water Permit
Dear Mr. Bennett,
Ncg)oos 33
Enclosed is Silar LLC's Storm Water permit application, attachments, and check # 66-85-531 in the amount of
$860. Please refer to Oak -Bark Corporation's application cover letter for the history of the three companies now
operating on this site. if you have any questions, please contact me.
r
Peter R. Yurgel
Plant Manager Silar LLC
333 Neils Eddy Road,
Riegelwood, NC 28456
910-655-6980 X5254
pyi![e-mail]

JJCS�aoS
F
06/01109
Oak -Bark Corporation
333 Neils Eddy Rd.
Riegelwood N.C. 28456
Mr. Bradley Bennett
Division of Water {duality
Storm Water Permitting Unit
9
1617 Mail Service Center
5P
Raleigh N.C. 27699-1617
L
Ref: Request for a new Storm Water Permit
Mr. Bennett
This letter and attachments serve as Oak-Bark's request to be issued a storm
water permit.
Oak -Bark Corporation was formally Oak -Bark Corporation DBA Wright
Corporation. In December 2006 a major portion of Wright Corporation was sold
to Hexion Specialty Chemical. This sale transferred ownership of the Hexamine
Plant, Formaldehyde Plant and Special Projects (producer of Ketone Resins and
other specialty chemicals) to Hexion Specialty Chemicals. The remaining portion
of Wright Corporation became Oak -Bark Corporation. The process left under the
Oak -Bark (OBC) name were Silar, Fine Chemicals, Pharma and Dry Projects.
At that time Hexion requested to transfer Wright Corporation's Storm Water
Permit to Hexion and they would maintain all of the storm water outfalls. This
continued until - November of 2008 when Hexion applied for a separate permit
which left out four (4) of the existing outfalls (SW 001, SW002, SWO05 & Sw007).
OBC was not made aware of this until Ms. Linda Willis NCDENR 1 Wilmington
Regional Office contacted OBC and requested information on the status of
OBC's new storm permit. At that time I started working to put this application
together.
On April 22, 2009 OBC sold another portion of its assets" Silar, to Monomer
Polymers. Storm Water Outfalls SW001, SWO02 and SWO05 transferred over to
the new company who will operate as Silar LLC. The new company (Sitar LLC)
will file for their own separate storm water permit.
Page 1 of 2

This leaves OBC with two operations, the Dry Projects Plant and the Pharma
Plant. The Pharma Plant is currently not in operation and has been Idle since
2004. The attached permit application is associated with the Dry Projects
operation only. There are three (3) products produced in the Dry Projects Plant
and each are discussed in the attached. When the Phrma Plant restarts, we
(NCDENR & OBC) will review that operation and determine if it requires a
separate storm water permit or a revision to this request:
This application covers only outfall SW007. The chemicals associated with this
outfall are listed within. A map is also included which is intended to show the
location of SWO07 and how surrounding processes and land elevations impacts
that outfall.
Enclosed you will find a check (# 74660), in the amount of $860.00 to cover this
application request.
Should you need further clarification or more information, please do not hesitate
to contact me at [phone] ext. 5205.
ResppeectFull
W.E. Lewis
Plant Manager
Oak -Bark Corporation
Page 2 of 2

HEdZ7L10W
Specialty Chemicals
Forest Products Division
ACME OFERAT':CNS
355 Neils Eacy : oao
Riegelwood. NC 28456-9570
hexion.com
November 7, 2008
�
Bradley Bennett ;
NCDENR - DWQ Q
Wetlands and Stormwater Branch n�(�
1617 Mail Service Center v �O
Raleigh, NC 27699-1617 y
RE: Hexion Specialty Chemicals, Inc — Acme Operations
Stormwater Permit Application
Mr. Bennett:
Please find enclosed Hexion Specialty Chemicals, Inc. — Acme Operations' application for a stormwater
permit.
If there are any questions or concerns, please contact April Hanson at [phone] ext. 5248.
Regards,
Hexion Specialty
/JChemicals
Rick Springer
Vice President EHS - FPD
Cc: Linda Willis, Wilmington Regional Office

Please print or type in the unshaded areas only
(lift -in areas are spaced for elite type, i.e.. 12 charactersfinch)
For Approved. OMB No. 2040-0086. Approval expires 5-31-92
FORM
U.S. ENVIRONMENTAL PROTECTION AGENCY
I. EPA I.D. NUMBER
.�
E GENERAL INFORMATION
NCR000143545 VA fl
F
�^
Consolidated Permits Program
GENERAL
Read the "General Instructions" before starting.)
1
2 13 1 14 115
LABEL ITEMS
GENERAL INSTRUCTIONS
If a preprinted label has been provided,
1. EPA I.D. NUMBER
affix It in the designated space. Review the
information if it is
carefully; any of
incorrect it
III. FACILITY NAME
cross through and enter the
correct data in the appropriate fill-in area
below. Also, if any of the preprinted data is
absent (the area to the left of the label
fists
V. FACILITY PLEASE PLACE LABEL IN THIS SPACE
space the information that should
appear) lease provide it in the proper fill -
in below. if the label is
MAILING LIST
area�s� complete
Items
and correct you need not complete
I, Ill, V, and VI(except VI-B which must be
V1. FACILITY
completed regardless). Complete all items
if no label has been proved. Refer to the
LOCATION
instructions for detailed item descriptions
and for the legal authorization under which
this data is collected:
II. POLLUTANT CHARACTERISTICS
INSTRUCTIONS: Complete A through J to determine whether you need to submit any permit application forms
to the EPA. If you answer "yes" to any
questions, you must submit this form and the supplemental from listed in the parenthesis following the question.
Mark X' in the box in the third column if
the supplemental form is attached. If you answer "no" to each question, you need not submit any of these forms.
You may answer "no" if your activity is
excluded from permit requirements; see Section C of the instructions. See also, Section D of the instructions
for definitions of bold-faced terms"
MARK "XFORM
MARK11XFORM
SPECIFIC QUESTIONS
SPECIFIC QUESTIONS
YES
NO
YES
NO
ATTACHED
ATTACHED
A. is this facility a publicly owned treatment works
B. Does or will this fachity (either existing or
which results in a discharge to waters of the
El
®
proposed) include a concentrated animal
❑
U.S.? (FORM 2A)
per�tlon or aquatic
rucgtionofacility
prod which results indischarge
to waters of the U.S.? (FORM 2B)
16
17
18
19
20
21
C. Is this facility which currently results in
®
❑
D. Is this proposal facility (other than those described
discharges to waters of the U.S. other than
in A or H above) which will result in a discharge
those described in A or B above? FORM 2C
to waters of the U.S.? FORM 2D
22
23
24
25
26
27
E. Does or wil) this facility treat, store, or dispose of
F. Do you or will you Inject at this facility industrial or
hazardous wastes? (FORM 3)
❑
®
❑
municipal effluent below the lowermost stratum
❑
®
❑
containing, within one quarter mile of the well
bore, underground sources of drinking water?
28
29
30
(FORM 4)
31
32
33
G. Do you or will you inject at this facility any
H. Do you or will you inject at this fact ity fluids for
produced water other fluids which are brought to
the surface in Connection with conventional oil or
❑
®
❑
special processes such as mining of sulfer by the
Frasch process, solution mining of minerals, in
❑
natural gas production, inject fluids used for
situ combustion of fossil fuel, or recovery of
enhanced recovery of oil or natural gas, or inject
geothermal energy? (FORM 4)
fluids for storage of liquid hydrocarbons?
34
35
36
37
36
39
FORM 4
I. Is this facility a proposed stationary source J. Is this facility a proposed stationary source
which is one of the 28 industrial categories listed which is NOT one of the 28 industrial categories, ❑ ® ❑
® ❑ ❑
in the instructions and which will potentially emit listed in the instructions and which will potentially
100 tons per year of any air pollutant regulated emit 250 tons per year of any air pollutant
under the Ciean Air Act and may affect or be regulated under the Clean Air Act and may affect
located in an attainment area? FORM 5 40 41 42 or be located in an attainment are? FORM 5 43 44 45
III. NAME OF FACILITY
SKIP Hexion Specialty Chemicals, Inc.
c1&29
1
Piq5
1 30 69
IV. FACILITY CONTACT
A. NAME & TITLE last, first, & title B. PHONE area code & no.
Hanson, April EHS Leader
910 655 2263
z
1 46 48 49 51 52- 55
15 1 16 45
V. FACILITY MAILING ADDRESS
A. STREET OR P.O. BOX
c 333 Neils Eddy Road
D. ZIP CODE
28456
15 16 45
B. CITY OR TOWN
C. STATE
NC
[:R—iegelwood
P15E
is 401 141 42
47 51
VI. FACILITY LOCATION
A. STREET, ROUTE NO. OR OTHER SPECIFIC IDENTIFIER
Iff33.3 Neils Eddy Road
15 16 45
B. COUNTY NAME
Columbus
46 70
C. CITY OR TOWN
D. STATE
E. ZIP CODE
F. COUNTY CODE
c Riegelwood
NC
28456
s
15 16 40
41 42
47 51
52 54
F:PA FO101 3510-1 (8-90) CONTINUED ON REVERSE

CONTINUED FROM THE FRONT
VII. SIC CODES (4-di it, in order of riorit )
A. FIRST
B. SECOND
c
2869 1
(specify) 7
2821 (specify)
7
7
15
16 19
15
16 17
C. THIRD
D. FOURTH
(specify) � (specify)
�,C516
17 15 16 19
VIII. OPERATOR INFORMATION
A. NAME B. Is the name listed in Item
c
Hexion Specialty Chemicals, Inc VIII=A also the owner?
8
® YES ❑ NO
1B
19 55
C. STATUS OF OPERATOR Enter the apprgeriate letter into the answer box; if "Other,"s eci
D. PHONE area code & no.
F = FEDERAL M = PUBLIC (other than federal or state)
P
(specify)
C
910
655
2263
A
S = STATE O = OTHER (specify)
kl
ss
is 1a
is 21
22 25
P = PRIVATE
15
E. STREET OR PO BOX
333 Neils Eddy Road
26 55 •
F. CITY OR TOWN
G. STATE H. ZIP CODE I IX. INDIAN LAND
c
Riegelwood
NC 28456 Is the facility located on Indian lands?
B
❑ YES ® NO
1 42 42 47 51:
15 1 16 40
X. EXISTING ENVIRONMENTAL PERMITS
A. NPDES (Discharges to Surface Water
D. PS Air Emissions from Proposed Sources
a
00003395
9 N
C
S p
15 16 17 1 18 30
15 1 16
17
18 30
B. UIC Under round injection of Fluids
E. OTHER (specify)
(Specify)
IUP Pretreatment Permit
C T r
0 T e IUP 001
9
9 U
15 16 L17
18 30
15 1617 18 30
C. RCRA Hazardous Wastes E. OTHER s eci (specify)
c T ' NCR000143545 s 7 8 01394 T39 Title V
15 16 1 17 16 30 15 16 17_ 1 a - .30 -.
XI. MAP
Attach to this application a topographic map of the area extending to at least one rnile beyond propeiiy boundaries:• The map must
show the outline of the facility, the location of each of its existing and proposed intake and discharge structures; each of its
hazardous waste treatment, storage, or disposal facilities, and each well where it injects fluids underground. Include all'springs,
rivers and other surface water bodies in the uriap area. See instructions for precise requirements.
XII. NATURE OF BUSINESS (rovide a brief description)
Hexion Specialty Chemicals, Inc. is a chemical production facility specializing in the manufacture of hexamine,
formaldehyde and formaldehyde derivatives.
Xlll. CERTIFICATION see instructions)
I certify under penalty of law that I have personally examined and am familiar with the information submitted 0 this application and
all attachments and that, based on my inquiry of those persons immediately responsible for obtaining the information contained in
the application, / believe that the information is true, accurate and complete. l am aware that there are significant penalties for
submitting false information, including the possibTfit of fine and imprisonment
A. NAME & OFFICIAL TITLE (type or print) BOGNgTURE C. DATE SIGNED
Rick Springer / Vice President EHS - FPD llhii) 11 7 20� s
COMMENTS FOR OFFICIAL USE ONLY
Cd
5 1s 55
EA'A FORM 3510-1 (8-90)

EPA ID Number (copy from Item 1 of Form 1) I Form Approved. OMB No. 2040-0086
Please print or type in the unshaded areas only. NCRO 0014 3 54 5 Approval expires 5-31-92
U.S. Environmental Protection Agency
FORM Zo
Washington, DC 20460
2F PA Application for Permit to Discharge Storm Water
NPDES Discharges Associated with Industrial Activity
Paperwork Reduction Act Notice
Public reporting burden for this applicatian is estimated to average 26.6 hours per application, induding time for reviewing instructions, searching existing data sources,
gathenng and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding the burden estimate, any other aspect
of this collection of information, or suggestions for improving this form, including suggestions which may increase or reduce this burden to: Chief, Information Policy
Branch, PM-223, U.S. Environmental Protection Agency, 1200 Pennsylvania Avenue, NW, Washington, DC 20460, or Director, Office of information and Regulatory
Affairs, Office of Management and Budget, Washington, DC 20503.
Outfall Location
For each outfall, list the latitude and longitude of its location to the nearest 15 seconds and the name of the receiving water,
A. Outfall Number
(list)
B- Latitude
C. Longitude
D. Receiving Water
(name)
003
19.00
43.00
78.00
12.00
13.00
Livingston Creek
004
19.00
45.00
78.00
12.00
11.00
Livingston Creek
006
E34
19.00
42.00
78.00
12.00
6.00
Livingston Creek
008
19.00
38.00
78.00
11.00
59.00
Livingston Creek
009
19.00
47.00
78.00
12.00
8.00
Livingston Creek
IL Improvements
A. Are you now required by any Federal. State, or local authority to meet any implementation schedule for the construction, upgrading or operation of wastewater
treatment equipment or practices or any other environmental programs which may affect the discharges described in this application? This includes, but is not limited
to, permit conditions, administrative or enforcement orders, enforcement compliance schedule letters, stipulations, court orders, and grant or loan conditions.
2. Affected Ouffalls 4. Final
1. Identification of Conditions, Compliance Date
Agreements, Etc. number source of discharge 3. Brief Description of Project a, req. b. proj.
Not applicable
6: You may attach additional sheets describing any additional water pollution (or other environmental projects which may affect your discharges) you now have under
way or which you plan. Indicate whether each program is now under way or planned, and indicate your actual or planned schedules for construction.
It. Site Drainaqe Ma
Atlach a site map showing topography (or indicating the outline of drainage areas served by the outfalls(s) covered in the application if a topographic map is unavailable)
depicting the facility including: each of its intake and discharge structures; the drainage area of each storm water outfall; paved areas and buildings within the drainage
area of each storm water outfall, each known past or present areas used for outdoor storage of disposal of significant materials, each existing structural control measure
to reduce pollutants in storm water runoff, materials $oading and access areas, areas where pesticides, herbicides, soil conditioners and fertilizers are applied; each of
its hazardous waste treatment, storage or disposal units (including each area not required to have a RCRA permit which is used for accumulating hazardous waste
under 40 CFR 262.34): each well where fluids from the facility are injected underground; springs, and other surface water bodies which received storm water discharges
from the facility.
EPA Form 3510-2F (1-92) Page 1 of 3 Continue on Page 2

Continued from the Front
IV. Narrative Description of Pollutant Sources
A. For each outiall, provide an estimate of the area (include units) of impenous surfaces fiinduding paved areas and building roofs) drained to the oulfal. and an estimate of the total surface area
drained by the outfait
outfall
Area of Impemus Surface
Total Area Drained
Dutlall
Area of Impervious Surface
Total Area Drained
Number
(provide units)
(provide units)
Number
(provide units)
(provide units)
003
61,060 square feet
118,9o0 sq. feet
009
2,683 square feet
2,693 sq. feet
004
249,510 square feet
251,900 sq. feet
006
111,690 square feet
291,600 sq. feet
008
32,320 square feet
37,590 sq. feet
B. Provide a narrative description of significant materials that are currently or in the past three years have been treated, stored or disposed in a manner to allow exposure
to storm water; method of treatment, storage, or disposal; past and present materials management practices employed to minimize contact by these materials with
storm water runoff; materials loading and access areas, and the location, manner, and frequency in which pesticides, herbicides, soil conditioners, and fertilizers are
applied.
See Attachment A
C. For each outfall, provide the location and a description of existing Structural and nonstructural control measures to reduce pollutants in storm water runoff; and a
description of the treatment the storm water receives, including the schedule and type of maintenance for control and treatment measures and the ultimate disposal
of any solid or fluid wastes other than by discharge -
Outfalt
List Codes from
Number
Treatment
Table 2F-1
All See attachment for description of control measures. See Attachment D 4-A
V. Nonstormwater Discharges
A_ I certify under penalty of law hat the outfaii(s) covered by this application have been tested or evaluated for the presence of nonstormwater discharges, and that all
nonstormwater discharged from these outfall(s) are identified in either an accompanying Form 2C or From 2E application for the outfall.
Name and Official Title (type or print)
Signature
Date
Date Signed
Rick Springer/Vice President EHS-FPD
/�!r
1 ! (J
)I �Q ✓
B. Provide a description of the method used, the date of any testing, and the onsite drainage points that were directly observed during a test.
n December 6, 2007, a visual observation was conducted on outfalls 003, 004, 006, 008 and 009. During this visual
bservations, it was noted that there were no additional discharges to these outfalls. (Inspection conducted with no rain
resent)
0n October 21, 2006, a visual observation was conducted on Outfalls 003, 004, 006, 008 and 009. During this visual observation,
it was noted that there were no additional discharges to these outfalla. (Inspection conducted with no rain present)
VI. Significant Leaks or Spills
Provide existing information regarding the history of significant leaks or spits of toxic or hazardous pollutants at the facility in the last three years, including the
approximate date and location of the spilt or leak, and the type and amount of material released.
Attachment C
EPA Form 3510-2F (1-92) Page 2 of 3 Continue on Page 3

EPA ID Number (copy from Item 1 of Form 1)
Continued from Page 2 NCD024766719
VII. Discharge Information
A. B, C, & D: See instructions before proceeding. Complete one set of labtes for each outfall. Annotate the outfall number in the space provided.
Table VII-A, VI1-13. VII-C are included on separate sheets numbers VII-1 and VII-2.
E. Potential discharges not covered by analysis — is any toxic pollutant listed in table 2F-2, 2F-3, or 2F-4, a substance or a component of a substance which you
currently use or manufacture as an intermediate or final product or byproduct?
❑✓ Yes (list all such pollutants below) ❑ No (go to Section IX)
Formaldehyde
Molybdenum
Aniline
vanadium pentoxide
VIII. Biological Toxicity Testing Data
Do you have any knowledge or reason to believe that any biological test for acute of chronic toxicity has been made on any of your discharges or on a receiving water in
relation to your discharge within the last 3 years?
❑ Yes (list 0 such pollutants below) ✓❑ No (go to Section IX)
IX. Contract Analysis Information
Were any of the analyses reported in Item VII performed by a contract laboratory or consulting firm?
© Yes (list the name, address, and telephone number of, and pollutants IF
—]No (go to Section X)
analyzed by, each such laboratory or firm below)
A. Name
B. Address
C. Area Code & Phone No.
D. Podutants Analyzed
Oxford nabs
1316 S. 5th Street
910-763-9793
All data through 4/2007
Wilmington, NC 28401
Environmental Chemists, Inc.
6602 windmill Way
910-392-0223
All data after 4/2007
Wilmington, NC 28405
X. Certification
1 certify under penally of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that quafified 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 fine and imprisonment for knowing violations.
A. Name & Official Title (Type Or Print) B. Area Code and Phone No.
Rick Springer, Vice President EHS - FPD [phone]
C. Signature D. Date Signed
C fz
EPA Form 3510-2F (1-92) Page 3 of 3

EPA ID Number (copy from lfem 1 of Form 1) Form Approved, OMB No. 2040-0086
vC❑O24766719 Approval expires 5-31-92
VII. Discharge information (Continued from page 3 of Form 2F)
Part A — You must provide the results of at least one analysis for every pollutant in this table. Complete one table for each outfall. See instructions for additional details.
Maximum Values
Average Values
(include units)
(include units)
Number
Pollutant
of
Grab Sample
Grab Sample
and
Taken During
Taken During
Storm
CAS Number
First 20
Flow -Weighted
First 20
Flow -Weighted
Events
(if available)
Minutes
Composite
Minutes
Composite
Sampled
Sources of Pollutants
Oil and Grease
NIA
Biological Oxygen
Demand (BODS)
SEE ATTACHMENT ❑
Chemical Oxygen
Demand (GOD)
Total Suspended
Solids (TSS)
Total Nitrogen
Total Phosphorus
ph
Minimum
Maximum
Mi nimum
Maximum
Part B — List each pollutant that is limited in an effluent guideline which the facility is subject to or any pollutant listed in the facility's NPDES permit for its process
wastewater (if the facility is operating under an existing NPDES permit). Complete one table for each outfall. See the instructions for additional details and
requirements.
Pollutant
and
CAS Number
(if available)
Maximum Values
(include units)
Average Values
(include units)
Number
of
Storm
Events
I Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
SEE ATTACHMENT
❑
EPA Form 3510-2F (1-92) Page VII-1 Continue on Reverse

Continued from the Front
Part C - List each pollutant shown in Table 2F-2, 2F-3, and 2F-4 that you know or have reason to believe is present. See the instructions for additional details and
requirements, Complete one table for each outfall.
Pollutant
and
CAS Number
(if available)
Maximum Values
(include units)
Average Values
(include units)
Number
of
Storm
Events
Sampled
Sources of Pollutants
Grab Sample
Taken During
First 20
Minutes
Flow -Weighted
Composite
Grab Sample
Taken During
Firsi 20
Minutes
Flow -Weighted
Composite
SEE ATTACHMENT
D
Part D — Provide data for the storm event(s) which resulted in the maximum values for the flow weighted composite sample.
4.
5.
t.
2.
3.
Number of hours between
Maximum flow rate during
6.
Date of
Duration
Total rainfall
beginning of storm measured
rain event
Total flow from
Storm
of Storm Event
during storm event
and end of previous
(gallons/minute or
rain event
Event
(in minutes)
(in inches)
measurable rain event
specify units)
(gallons or specify units)
9/8/2006
65 minutes
1.1 inches
106 hours
0.099 MG
0.216 MC
1 7. Provide a description of the method of flow, measurement or estimate.
The total flow during a rain event was estimated from the drainage area of each outfall and total precipitation.
EPA Form 3510-21' (1-92) Page VII-2

Attachment A
[PA Forin 21- - Item IV B
The following liquid materials are stored within uncovered above ground storage tanks (AST) and thus, are stored in a manner allowing exposure to storm water. Each AST has secondary containment. Raw
materials are dispensed directly into the AST from a tanker truck. Intermediates and products are piped to the AST from the production process,
Significant Materials Stored or Disposed in a Manner Allowing Exposure to Storm Water
Method of Treatment, orage, or
Material
Form
Category
Disposal
Materials Management Practice
Materials Loading and Access Areas
Owner
Delivered by tanker truck; dispensed
#6 Fuel Oil
Liquid
Other Material
AST
Secondary containment for AST
directly into AST
Hexion
Delivered by tanker truck; dispensed
Acetone
Liquid
Raw Matefia4
Toles and AST S ecial Projects)
Secondary containment for AST
directly into AST
Hexion
Delivered by truck. Unloaded into raw
Acrylarnide
Solid
Raw Material
Bags
Stored in Special Projects Warehouse
material warehouse.
Hexion
Ageflex FM 1 (N,N-
Dimethylaminoethyi
Delivered by truck. Unloaded into raw
Methac late
Liquid
Raw Material
Drums
Stored in Special Projects Warehouse
material warehouse.
Hexion
Delivered by truck. Unloaded into raw
Ammonium chloride
Solid
Other Material
Bags
Stored in Special Projects Warehouse
material warehouse.
Hexion
Delivered by truck, Unloaded into raw
Ammonium chloride, treated
Solid
Other Material
Bags
Secondary containment for AST
material warehouse.
Hexion
Delivered by tanker truck; dispensed
Ammonium hydroxide
Liquid
Raw Material
4 ASTs
Secondary containment for AST
into AST
Hexion
Intermediate Product, By-
Ammonium Sulfate Loading Rack at
mmoniumsultate
Liquid
roduct, Waste
AST
Secondarycontainment for AST
Special Projects
Hexion
Delivered by tanker truck; dispensed
Anhydrous Ammonia
Liquid
Raw Material
2 ASTs
Secondary containment for ASTs
into AST
Hexion
Delivered by tanker truck; dispensed
Aniline
Liquid
Raw Material
Tank (Special Projects
Secondary containment; 2 tanks
into AST
Hexion
Aqua Sea!
Liquid
Finished Product
Tote
Secondarycontainment for tote.
S eciai Projects Loading Rack
Hexion
Delivered by truck in totes. Unloaded
Bleach
Liquid
Other Material
Tote
Secondary containment for tote
into secondary containment,
Hexion
Boiler feed water
Liquid
Other Material
AST
Secondary containment for AST
Hard piping to and from boiler feed tank.
Hexion
Cellulose Solution
Liquid
Finished Product
Trucks, Totes
Secondary containment for drums, trucks
Special Projects Loading Rack
Hexion
Delivered by tanker truck; dispensed
: Diisedec I Phthalate DIDP
Liquid
Other Material
AST
Secondary containment for AST
into AST
Hexion
Delivered by truck in drums. Unloaded
Dic andiamide
Liquid
Raw Material
Drums
Secondary containment for drums
to secondary containment.
Hexion
Delivered by tanker truck, dispensed
Diesel Fuel
Liquid
Other Material
AST
Secondary containment for AST
into AST
Hexion
Delivered by truck in drums. Unloaded
Diethyl Sulfate
Liquid
Raw Material
Drums
Secondary containment for drums
to secondary containment.
Hexion
Delivered by truck in drums. Unloaded
Ferric chloride
Liquid
Raw material
Drum at Biotrol bld
Secondary containment for drums
to seconds containment.
Hexion
Formaldeh de
Liquid
Finished Product
11 Tanks, totes, drums
Secondary containment for AST
Formaldehyde Loading Rack
Hexion

Attachiiient A
EI'A Form 21= - licin 1V 11
Method of Treatment, Storage, or
Material
Form
Category
Disposal
Materials Management Practice
Materials Loading and Access Areas
Owner
Delivered by truck in drums. Unloaded
Formic Acid 90%
Liquid
Raw Material
Drums
Secondary containment for drums.
into raw material warehouse.
Hexion
Delivered by tanker truck. Dispensed
Gasoline
Liquid
Other Material
AST
Secondary containment for AST
into AST
Hexion
Delivered by truck. Unloaded into raw
Golden Grip
Liquid
Raw Material
Totes
Secondary containment for totes.
material warehouse-
Hexion
Groutwri ht
Liquid
Finished Product
AST
Secondary containment for AST.
Special Projects Loading Rack
Hexion
Waste is stored in secondary
Intermediate Product, By-
containment. Loaded from containment
Hazardous waste
Liquid
product, Waste
Locked storage container
Secondaa containment for waste.
to disposal truck.
Hexion
Storage inside of a shipping container.
Hexameth lenetetramine
Powder and Liquid
Finished Product
Drum, Super Sack, 14 ASTs
Secondary containment for ASTs
Hexamine ioading dock
Hexion
Delivered by truck. Unloaded into raw
Hi-Sil 233
Powder
Other Material
Super Sacks
Stored in Special Projects Warehouse
material warehouse.
Hexion
Delivered by truck. Unloaded into raw
H dochtoric acid
Liquid
Raw Material
Drums
Secondary containment for drums.
material storage.
Hexion
Delivered by truck, Unloaded into Taw
Hydrogen Peroxide
Liquid
Other Material
Totes
Secondary containment for totes.
material storage.
Hexion
Secondary containment for AST and
Ketone resin
Liquid
Finished Product
Totes and 5 AST tanks
totes.
Special Projects Loading Rack
Hexion
Intermediate Product, By-
Lined pond with level indicators to assist
Lined Pond Water
Liquid
product, Waste
Lined Pond
in mans ing low levels in the pond.
Hard piping to and from lined pond.
Hexion
Delivered by truck. Unloaded to
Magnesium Ch}oride
Liquid
Other Material
Totes
Secondary containment for totes.
secondary containment.
Hexion
Delivered by tanker truck; dispensed
Methanol.
Liquid
Raw Material
5 ASTs
Seconclaa containment for AST
directly into AST
Hexion
Delivered by truck. Unloaded intu raw
Oxalic acid
Liquid
Raw Material
Bags
Stored in Special Projects Warehouse
material storage.
Hexion
PD13031PD1313
Liquid
Finished Product
AST
Secondary containment for AST.
Special Projects Loading Rack
Hexion
Delivered by truck. Unloaded to drum
Per asol Brown SP
Liquid
Other Material
Toles
Stored in drum filling warehouse.
filling warehouse,
Hexion
Material is drummed from the reactor
PGAC
Liquid
Finished Product
Drums
Secondary containment for reactor.
and then loaded on truck.
Hexion
Delivered by truck. Unloaded to
Phosphoric acid
Liquid
Raw material
Drum near Biotrol bld
Seconclaa containment for drums.
secondary containment at Biotrol Bid .
Hexion
Delivered by tanker truck; dispensed
Propane
Liquid
Other Material
AST
directly into AST
Hexion

Attachment A
El Form 21= - Item IV B
Method of Treatment, Storage, or
Material
Form
Category
Disposal
Materials Management Practice
Materials Loading and Access Areas
Owner
Ouat 311
Liquid
Finished Product
Totes
Secondary containment for totes.
S ec4 Projects Loading Rack
Hexion
Delivered by truck. Unloaded to
Red dye
Liquid
Raw Material
Totes
Secondary containment for totes,
secondary containment.
Hexion
Loading Rack at Special Projects. Hard
Regan water.
Liquid
Other Material
4 ASTs
Secondary containment for AST
piped to lined pord.
Hexion
Delivered by tanker truck. dispensed
Sodium hydroxide
Liquid
Raw material
AST
Secondary containment for AST
directly into AST
Hexion
Delivered by truck. Unloaded into raw
Sodium Sulfite
Liquid
Raw Material
Drums. Totes
Stored in Special Projects Warehouse
material storage.
Hexion
.
Delivered by tanker truck. Dispensed
Sulfuric acid 251/.
Liquid
Other Material
AST
Secondary containment for AST
into AST.
Hexion
Delivered by truck. Unloaded to drum
Sulfuric acid 98%
Liquid
Raw Material
Drums
Stored inside drum filling warehouse.
filling warehouse.
Hexion
Intermediate Product, By-
Delivered by tanker truck. Dispensed
Triethanolamine 80%
Liquid
product, Waste
AST
Seoonclafy containment for AST
into AST.
Hexion
Delivered by tanker truck. Dispensed
Dowtherm
Liquid
Other Material
AST
Secondary containment for AST
into AST.
Hexion
Delivered by truck. Unloaded into raw
Urea rifled
Solid
Raw Material
Bag
Stored in Special Projects Warehouse
material storage
Hexion
Drums filled from the reactor. Loaded
Vanadium Oxalate Sotution
Liquid
Finished Product
Drums
Secondary containment for reactor.
from reactor to truck.
Hexion
Vanadium pentoxide
Solid
Raw Material
Drum
Stored in Special Projects Warehouse
Delivered by truck at warehouse
Hexion
intermediate Product, By-
Wastewater is pumped to and from
Wastewater
Liquid
Rroduct, Waste
8 ASTs, Discharged to POTW
Secondary containment for ASTs
tanks
Hexion
AST: Horizontal tank, fire water tank,
Pumped directly from Livingston Creek
Water
Liquid
Other Material
water for process, washdown water
Stored in AST
into AST
Hexion
Wonderbond
Liquid
Finished Product
Totes
Stored in Special Projects Warehouse
Loading Rack at Special Projects
Hexion

Attachment B
EI'A Farm 2F - Item IV C
Treatment
Outfall #
Outfall Description/Location
Structural Controls (YIN)
Non-structural Controls (YIN)
Received (YIN)
3
SWPPP, employee training, visual inspections,
Located below Cooling Towers 1&2
Diversion ditch to discharge weir.
housekeeping program
N
4
SWPPP, employee training, visual inspections,
Located behind Formaldehyde Plant
Diversion ditch to discharge pipe, 1
housekeeping program
N
6
SWPPP, employee training, visual inspections,
Duck Pond Outfall
Overflow weir to discharge pipe
housekeeping program
N
8
SWPPP, employee training, visual inspections,
Manway outside Maintenance Shop
Manhole hard piped to discharge point.
housekeeping program
N
SWPPP, employee training, visual inspections,
9
Tank Dike for Feed and Intermediate
Tank dike with manual pump station and
housekeeping program, secondary
Tanks
valvin .
containment draining logs
N

Attachment C
Hexion Specialty Chemicals, Inc
Acme Operations
Spill Events
Spill Event
Location
Date
Approximate
Volume
Dowtherm Spill
Inside Containment at HCHO Plant
3/14/07
27 gals
50% Resin
Behind Warehouse
9/27/07
125 als
Alimet
Leaked outside failed containment —
10/3/07
1 gal
containment repaired immediately
Liquid Hexamine
Hexamine Plant sump overflowed
1/30/08
1,514 gals
Spill
during rain event
50% HCHO
Inside Containment at Special
2/10/08
5 gals
Projects
.42% Hexamine
Inside Containment at Hexamine
3/17/08
20 gals
Tank Farm
42% Hexamine
Inside Containment at railcar
4/23/08
25 gals
loading station
50% HCHO
Inside Containment at HCHO plant
5/18/08
125 gals
25% Hexamine
Inside Containment at Hexamine
8/9/08
5 minutes of
Tank Farm
overflow
6% Vanadium
Special Projects loading ramp
9/26/08
391 lbs.
Oxalate Solution
Diisodecyl
DIDP Tank Area
10/14/08
3 gals
Phthalate (DIDP)
Green Tank
Behind Formaldehyde Plant
1 1/4/2008
700 total gals
Overflow
200 gals to Outfall

Attachment D
Form 2F
Outtall 003:
-1,1 V) I b
30 1 V1,
Date
Total Flow
(MG)
pH
BOO
(mgIL)
COD
(mgIL)
TSS
(mgIL)
NHS
(mgIL)
TKN
(mgIL)
NO3+NO2
(mgIL)
oa
calculation
(mgIL)
Total Lead
(mglL)
Formaldehyde
(mgIL)
Hexamine
(mgIL)
Total P
(mgIL)
Event
Duration (hj
Total Event
Precipitation (in)
3/21/2006
0.043
7.12
162
504
27
112
118
40.0
158.0
0.009
14
194
N--/
0.83
0.48
413/2006
-0.033
7.16
181
612
316
52
92
23.0
115.0
0.018
1
227
0.92
0.37
81812006
0.099
7.44
28
110
10
82
97
16.0
113.0
<0.003
0.05
39
1.42
1.1
11/1612006
0.051
7.28
32
1121
1
13r8i
15,21
8.9
24.1
0.0111
7.741
14.21
0.75
0.57
2/1120C)71
0.0911
7.D5
307
122
<3
104
111
13.0
124.0
<0.003
1 13,51
1171
6.08
1,02
2/1/2007 a
0.0911
7.05
53
1201
3
1281
1311
13.1
144.1
1 <0.003
1 13.81
13.71
0.111
6.08
1.02
6112/20071
M671
6.711
43
198
46
0.11
30
33.91
63.91
0.0111
4.941
37.61
0.271
0.67
0.91
Maximum
1 0.09917.4401
3071
612
316
1281
1311
40,0001
1581
0.01131
14.Cl
227.01
0271
6,08
1.10
Average
1 0.0681
1 115.141
254.001
78.831
70.271
84.891
21.13
106.011
0,011
7.861
77.031
0 191
2.391
0.78
Outtall 004
otal IN
Total Flow
BOO
COD
TSS
NH3
TKN
NO3+NO,
calculation
Total Lead
Formaldehyde
Hexamine
Total P
Event
Total Event
Date
(MG)
pH
(mgIL)
(mgIL)
(mgIL)
(mglt)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
Duration (h)
Precipitation (in)
21112007
0.056
6.9
1570
4750
24
1090
1100
54.5
1.154.5
<0.003
13,2
153D
0.41
6.06
1.02
6/12/2007
0.096
6.83
469
3449
22
360
708.4
49.6
758D
0.005
6.76
1275
0,35
0.67
0,91
Maximum 1 0.0966.91 15701 47501 24 10901 11001 54.5 1154.5 0.0051 13.2 15301 0.411 6.081 1.02
Average 1 O.0761 1 1019,5014099MI 23.00735,00 904.20 52A6 956 261 0.011 9,981 1402.500.381 3,381 0.97
Outlall 006
oa
Total Flow
BOD
COD
TSS
NHa
TKN
NO3+NO2
calculation
Total Lead
Formaldehyde
Hexamine
Total P
Event
Total Event
Date
(MG)
pH
(mgIL)
(mgIL)
[mgIL)
Img1L)
(mgIL(
(mgIL)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
Duration (h)
Precipitation (in)
6112/2007
01651
6,551
61
331
251
2,51
3,6
2.51
6.11
0.0061
0.75
<1.0
1 0.31
0.671
0.91
Outtalf 008
oa
Total Flow
BOO
COO
TSS
NH3
TKN
NO3+NO2
calculation
Total Lead
Formaldehyde
Hexamine
Total P
Event
Total Event
Date
(MG)
pH
(mgIL)
(mgIL}
(mgIL)
(mgIL)
(mgIL)
(mgIL)
(mgIL)
ImgIQ
(mgIL)
(mgIL)
(mgIL)
Duration (h)
Precipitation [in)
6/1212007
0.0211
6.591
81
1 2121
1
1
1
1
1
1 3.271
1 0.67
0.91
Outtall 009
This outfall is a secondary containment dike that has pumping capabilities to Livingston Creek if water is uncontaminated or to storage if stormwater is contaminated. This containment is listed on the Site's
secondary containment log and discharges to the creek or storage will be logged and recorded.

Attachment D
Form 2F Vk A
VII - Part A
Outfall 003
Maximum Values
Average
Values
Pollutant
Grab Sampte Taken
During First 30
Minutes
Flow -weighted
composite
Grab Sample Taken
During First 30
Minutes
Flow -weighted
Composite
Number of
Storm Events
Sampled
Sources of Pollutants
Oil and Grease
<5 m 11
1
Biological Oxygen Demand
307 m fl
115A4 m !I
6
Chemical Oxygen Demand
612 m lI
254.00 m it
6
Hexamine Warehouse
Total Suspended Solids
316 mg/1
78.83 m 11
6
Oak -Bark Dry Products
Total K'eldahl Nitrogen
131 m 11
84.89 m it
6
Cooling Towers 1 & 2
Firewater Tank
Lined Pond Water Tank
Nitrate plus Nitrite Nitrogen
40 m fl
21.13 m 1l
6
Total Phosphorus
0.27 m !t
0.19
2
Minimum
Maximum
Minimum
Maximum
pH
6.71
7A4
1 6

Attachment D
Form 2F VI A
J
Outfall 004
Maximum Values
Avera
a Values
Pollutant
Grab Sample Taken
During First 30
Minutes
Flow -weighted
Composite
Grab Sample Taken
During First 30
Minutes
Flow -weighted
Com osite
Number of
Storm Events
Sampled
Sources of Pollutants
Oil and Grease
<5 m it
1
Biological Oxygen Demand
1570 mg/1
1019.50 m 11
2
Methanol Tanks
Chemical Oxwen Demand
4750 mg/1
4099.50 m it
2
Hexamine Production Area
Total Suspended Solids
24 m !I
23.00 m !I
2
Packaging Warehouse
Total Keldahl Nitrogen
1100 m 11
904.20 m ll
2
Special Projects Production
Area
Nitrate plus Nitrite Nitrogen
55 m it
52.06 m It
2
Total Phosphorus
0.41 m ll
0.38
2
HCHO Production Area
Minimum
Maximum
Minimum
Maximum
Lined Pond Cooling Tower
pH
6.83
6.9
2
Outfall 006
Maximum Values
Average
Values
Pollutant
Grab Sample Taken
During First 30
Minutes
Flow -weighted
Composite
Grab Sample Taken
During First 30
Minutes
Flow -weighted
Composite
Number of
Storm Events
Sampled
Sources of Pollutants
Oil and Grease
Duck Pond
Biological Oxygen Demand
6 m ll
1
Chemical Oxygen Demand
33 m ll
1
I Special Projects
Warehouse
Total Suspended Solids
25 m ll
1
Total Keldahl Nitrogen
4 m it
1
Oak -Bark Property Across
Nitrate plus Nitrite Nitrogen
2 m ll
1
Railroad
Oak -Bark QC Lab
Total Phosphorus
0.30 m ll
1
Minimum
Maximum
Minimum
Maximum
pH
1 6.55
6.55
1
(� Outfall008
1 1
Maximum Values
Average
Values
Pollutant
Grab Sample Taken
During First 30
Minutes
Flow -weighted
Composite
Grab Sample Taken
During First 30
Minutes
Flow -weighted
Composite
Number of
Storm Events
Sam led
Sources of Pollutants
Oil and Grease
Biological Oxygen Demand
8 m !I
1
Chemical Oxyqen Demand
Total Suspended Solids
212 m /I
1
Maintenance Building
Total Keldahl Nitrogen
Nitrate plus Nitrite Nitrogen
Total Phos horus
Minimum
Maximum
Minimum
Maximum
pH
1 6.59
6.59
1

Attachment D
Form 2F VII-B
,per
a�
,0
V6
cb�
VII - Part B
Outfall 003
Maximum Values Average Values
Pollutant
Grab Sample Flow- Grab Sample
Taken During weighted Taken During
First 30 Minutes Composite First 30 Minutes
Flow-
weighted
Composite
Number of
Storm Events
Sampled Sources of Pollutants
Total Residual Chlorine J
<0.10 m /I
1
6
Total Nitrogen "
158 m /I 106.01 m /I
Hexamine -_l
227 m ll 77.03 m /I
6 Hexamine Warehouse
Formaldehyde xj
14 m /I 7.86 m /l
6 Oak -Bark Dry Products
1 Cooling Towers 1 & 2
1 Firewater Tank
1 Lined Pond Water Tank
6
Total Chromium V
<0.005 mg/1
Total Cop2er
0.027 m li
. Total Cyanide ✓
<0.005 m /l
Total Lead J
0.018 mg/1 0.01 m /I
Total Nickel /
<0.005 Mgt]
1
1
6
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Total Zinc
0.335 m ll
- Ammonia as N
128 m /1 70.27 m /l
Methanol
11.7 m ll
Acena thene
NO
Acena th lene
ND
AcFylonitrile
ND
Anthracene
ND
Benzene
ND
Benzo(a)anthracene
NO
3,4-Benzofluoranthene
NO
Benzo(k)ftuoranthene
ND
Benzo(a)pyrene
ND
Bis 2-ethyl hex I hthalate
ND
Carbon Tetrachloride
ND
Chlorobenzene
NO
Chloroethane
ND
Chloroform
ND
2 Chlorophenol
ND
Chrysene
ND
Di-n-but I phthalate
NO
1,2-Dichlorobe nzene
ND
1,3-Dichlorobenzene
ND
1,4-Dichlorobenzene
ND
1,1-Dichloroethane
ND
1,2-Dichforcethane
NO
1,1-Dichloroeth lene
ND
1,2-trans-Dichloroeth lene
ND
2,4-Dichloro henol
ND
1,2-Dichloropro ane
ND
1,3-Dichloro rop lene
ND
Diethyl phthalate
ND
2,4-Dimeth 1phenol
NO
Dimeth I phthalate
NO
4,6-Dinitro-o-cresol
NO
2,4-Dinitro henol
ND
2,4-Dinitrotoluene
NO
2,6-Dinitrotoluene
NO
Eth (benzene
NO
Fluoranthene
NO
Fluorene
ND
Hexachlo robe nze ne
ND
Hexachlorobutadiene
ND
Hexachloroethane
ND
Methylene Chloride
NO
Methyl Chloride
ND
Napththalene
ND
Nitrobenzene
ND

Attachment D
Form 2F VII-B
2-Nitrophenol
ND
1
Hexamine Warehouse
Oak -Bark Dry Products
Cooling Towers 1 & 2
Firewater Tank
Lined Pond Water Tank
4-Nitro henol
ND
1
Phenanthrene
ND
1
Phenol
ND
1
P rene
ND
1
Tetrachloroeth lene
NO
1
Toluene
ND
1
1,2,4-Trichlorobenzene
ND
1
1,1,1-Trichloroethane
ND
1
1,1,2-Trichloroethane
ND
1
Trich loroeth lene
ND
1
Vinyl Chloride
ND
1

Attachment D
Form 2F VII-B
Outfall 004
Maximum Values
Average Values
Pollutant
Grab Sample Flow-
Taken During First weighted
30 Minutes Composite
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Storm
Events
Sampled
Sources of Pollutants
Total Residual Chlorine
<0.10 mg/1
1
2
2
2
1
1
1
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
i
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Methanol Tanks
Hexamine Production Area
Packaging Warehouse
Special Projects Production
Area
HCHO Production Area
Lined Pond Cooling Tower
Total Nitrogen 1155 m !I
1 956 mg/1
Hexamine 1530 mg/1
1403 m ll
Formaldehyde 13.2 m /I
10.0 mg/1
Total Chromium 0.016 m !I
Total Copper 0.057 m tl
Total Cyanide <0.005 m II
Total Lead 0,005 m II
0.005 mg/1
Total Nickel 0 014 m lI
Total Zinc 0,298 mg/1
Ammonia as N 1090 m /l
735 mg/1
Methanol 34.4 mg/1
Acena thene ND
Acena th lene ND
Ac lonitrile ND
Anthracene ND
Benzene ND
Benzo(a)anthracene ND
3,4-Benzofluoranthen e ND
Benzo(k)fluoranthene ND
Benzo(a)p rene ND
Bis 2-eth Ihex I hthalate ND
Carbon Tetrachloride ND
Chlorobenzene ND
Chloroethane ND
Chloroform ND
2-Chlorophenol ND
Chrysene ND
Di-n-but I phthalate ND
1,2-Dichlorobenzene ND
1,3-Dichlorobenzene ND
1,4-Dichlorobenzene ND
1,1-Dichloroethane ND
1,2-Dichloroethane ND
1,1-Dichloroeth lene ND
1,2-trans-Dichloroeth lene ND
2,4-Dichloro henol ND
1,2-Dichloro ro ane ND
1,3-Dichloropropylene ND
Diethyl phthalate ND
2,4-Dimeth I henot ND
Dimeth I phthalate ND
4,6-Dinitro-o-cresol ND
2,4-Dinitro henol ND
2,4-Dinitrotoluene ND
2,6-Dinitrotoluene NO
Eth (benzene NO
Fluoranthene ND
Fluorene ND
Hexachlorobenzene ND
Hexachlorobutadiene ND
Hexachloroethane ND
Methylene Chloride ND
Methyl Chloride ND
Napththalerne ND
Nitrobenzene ND

Attachment D
Form 2F VIE-B
2-Nitrophenol
ND
1
Methanol Tanks
Hexamine Production Area
Packaging Warehouse
Special Projects Production
Area
HCHO Production Area
Lined Pond Cooling Tower
4-Nitrophenol
ND
1
Phenanthrene
ND
1
Phenol
ND
1
P rene
ND
1
Tetrachloroeth lene
ND
1
Toluene
ND
1
1,2,4-Trichiorobenzene
ND
1
1,1,1-Trichloroethane
ND
1
1,1,2-Trichloroethane
ND
1
Trichloroeth lene
ND
1
Vinyl Chloride
ND
1

. r7
Attachment D
Form 2F Vll-B
Quttall 006
Maximum Values
Average Values
Pollutant
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Number of
Storm Events
Sampled
Sources of Pollutants
Total Residual Chlorine
Duck Pond
Special Projects
Warehouse
Oak -Bark Property
Across Railroad
Oak -Bark QC Lab
Total Nitrogen
6 m /I
1
Hexamine
<1.0
1
Formaldehyde
0.8 mg/1
1
Total Chromium
Total Copper
Total Cyanide
Total Lead
3.006 m /l
1
Total Nickel
Total Zinc
Ammonia as N
3 m 1l
1
Methanol
NO
1
Acena thene
NO
1
Acena th lene
ND
1
Acrylonitrile
ND
1
Anthracene
NO
1
Benzene
NO
1
Benzo(a)anthracene
NO
1
3,4-Benzofluoranthene
NO
1
Benzo(k)fluoranthene
NO
1
Benzo(a)p rene
ND
1
Bis(2-eth Ihex l) phthalate
ND
1
Carbon Tetrachloride
ND
1
Chlorobenzene
NO
1
Chloroethane
NO
1
Chloroform
ND
1
2-Chloro henol
NO
1
Chrysene
NO
1
Di-n-butyl phthalate
NO
1
1, 2-Dichlorobenzene
ND
1
1,3-Dichlorobenzene
NO
1
1,4-Dichlorobenzene
NO
1
1.1-Dichloroethane
NO
1
1,2-Dichloroethane
NO
1
1,1-Dichloroeth lene
NO
1
1,2-trans-Dichloroeth lene
NO
1
2,4-Dichloro henol
NO
1
1,2-Dichloro ropane
NO
1
1,3-Dichloro rop lene
NO
1
Diethyl phthalate
ND
7
2,4-Dimeth I henol
ND
1
Dimeth I phthalate
NO
1
4,6-Dinitro-o-cresol
NO
1
2,4-Dinitro henol
NO
1
2,4-Dinitrotoluene
NO
1
2,6-Dinitrotoluene
ND
1
Eth lbenzene
NO
1
Fluoranthene
NO
1
Fluorene
NO
1
Hexachlorobenzene
NO
1
Hexachlorobutadiene
NO
1
Hexachioroethane
NO
1
Methylene Chloride
NO
1
Methyl Chloride
NO
1
Na ththalene
NO
1

Attachment D
Form 2F VII-B
Nitrobenzene
ND
1
Duck Pond
Special Projects
Warehouse
Oak -Bark Property
Across Railroad
Oak -Bark CIC Lab
2-Nitrophenol
ND
1
4-Nitro henol
ND
1
Phenanthrene
ND
1
Phenol
ND
1
P rene
ND
1
Tetrachloroeth lene
ND
1
Toluene
ND
1
172,4-Trichlorobenzene
ND
1
1,1,1-Trichloroethane
ND
1
1,1,2-Trichloroethane
ND
1
Trichloroeth lene
NO
i
Vinyl Chloride
ND
1

Attachment D
Form 2F VII-B
Ou tfall 008
Maximum Values
Average Values
Pollutant
Grab Sample
Taken During First
30 Minutes
Flow-
weighted
Composite
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Number o
Storm
Events
Sampled
Sources of Pollutants
Total Residual Chlorine
Maintenance Building
Total Nitrogen
90 mg/1
1
Hexamine
3 m !I
1
Formaldehyde
0.3 m II
1
Total Chromium
<0.005 m IL
1
Total Copper
0,007 mg/1
1
Total Cyanide
<0.005 m 1L
1
Total Lead
<0.002 m IL
1
Total Nickel
<0.005 m /L
1
Total Zinc
0.054 m II
1
Ammonia as N
Methanol
ND
1
Acena thene
ND
1
Acena th lene
ND
1
Acrylonitrile
ND
1
Anthracene
ND
1
Benzene
ND
1
Benzo(a)anthracene
ND
1
3,4-Benzofluoranthene
ND
1
Benzo(k)fluoranthene
ND
1
Benzo(a) rene
ND
Bis(2-eth the I)phthalate
ND
1
Carbon Tetrachloride
ND
1
Chlorobenzene
ND
1
Chloroethane
ND
1
Chloroform
ND
1
2-Chlorophenol
ND
1
Ch sene
ND
1
Di-n-but I phthalate
ND
1
t ,2-Dichlorobenzene
ND
1
1,3-Dichlorobenzene
ND
1
1,4-Dichlorobenzene
ND
1
1,1--Dichloroethane
ND
1
1,2-Dichloroethane
ND
1
1,1-Dichloroeth lene
ND
1
1,2-trans-Dichloroeth lene
ND
1
2,4-Dichloro henol
ND
1
1,2-Dichloro ro ane
ND
1
1,3-Dichloropropylene
ND
1
Diethyl phthalate
ND
1
2,4-Dimeth I henol
ND
1
Dimeth 1 phthalate
ND
1
4,6-Dinitro-o-cresol
ND
1
2,4-Dinitro henol
NO
1
2,4-Dirnitrotoluene
ND
1
2,6-Dinitrotoluene
ND
1
Eth (benzene
ND
1
Fluoranthene
ND
1
Fluorene
ND
1
Hexachlorobenzene
ND
1
Hexachlorobutadiene
ND
1
Hexachloroethane
ND
1
Methylene Chloride
ND
1
Methyl Chloride
ND
1
Na ththalene
ND
1

Attachment D
Form 2F VII-B
Nitrobenzene
ND
1
Maintenance Building
2 Nitro henol
ND
1
4-Nitrophenol
ND
1
Phenanthrene
ND
1
Phenol
ND
1
P rene
ND
1
Tetra chloroeth lene
ND
1
Toluene
ND
1
1,2,4-Trich lorobenzene
ND
1
1,1,1-Trichloroethane
NO
1
1,1,2-Trichloroethane
ND
1
Trich loroeth lene
ND
1
Vinyl Chtoride
ND
1

Attachment D
Form 2F VII-C
VII - Part C
The following pollutants from Table 2F-2, 2F-3, and 2F-4 are present in discharge.
Results are provided in Tables VII-A and VII-B
Outfall 003
Maximum ValuesI
Average Values
Pollutant
Grab Sample
Taken During
First 30 Minutes
Flow
weighted
Composite
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Number of
Storm Events
Sampled
Sources of Pollutants
Nitrite -Nitrate
Results provided in Tables VII-A and Vll-B
Total Nitrogen
Formaldehyde
Total Copper
Total Lead
d
Total Zinc
I I I I I
Outfall 004
Maximum Values
Average Values
Pollutant
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Number of
Storm Events
Sampled
Sources of Pollutants
Nitrite -Nitrate
Total Nitrogen
Results provided in Tables Vll A and VII B
Formaldeh de
Total Copper
Total Lead
Total Nickel
Total Zinc
Outfall 006
Maximum Values
Average Values
Pollutant
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Number of
Storm Events
Sampled
Sources of Pollutants
Nitrite -Nitrate
Total Nitrogen
Results provided in Tables VIE -A and VII-B
Formaldehyde
Total Copper
Total Lead
Total Nickel
Total Zinc
Outfall 008
Maximum Values
Average Values
Pollutant
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Grab Sample
Taken During
First 30 Minutes
Flow-
weighted
Composite
Number of
Storm Events
Sampled
Sources of Pollutants
Nitrite -Nitrate
Total Nitrogen
Results provided in Tables VII-A and VII-B
Formaldehyde
Total Copper
Total Lead
Total Nickel
Total Zinc