NCS000077_COMPLIANCE_20180305

-------STORM WATE R-DIVISI ON-CODI N G-SH EET---
PERMIT NO.
N
DOC TYPE
❑ FINAL PERMIT
❑ MONITORING INFO
❑ APPLICATION
A COMPLIANCE
❑ OTHER
DOC DATE
❑ aDk� bSbS
YYYYM M D D

Division of Energy, Mineral & Land Resources
Land Quality Sect io n/Stormvs, ate r Permitting
NCDENR National Pollutant Discharge Elimination System
- C�-- D�,--.wo 8- Rr_5ouaees PERMIT NAMEIOWNERSHIP CHANGE FORM
ri++nrtonNnvr
FOR AGENCY USE ONLY
Date Received
Year
Month
Da
I. Please enter the permit number for which the change is requested.
NPDES Permit (or) Certificate of Coverage
N 0 S1 0 10 1 0 1 0 7 7 N C G
II. Permit status prior to requested change.
a. Permit issued to (cotrlpany name): Dow Corning Corporation
b. Person legally responsible for permit: Darren W Cart -min
First MI Last
RECEIVED
MAR 0 5 2018
DEWLAND QUALV
STQRMWATFAPERM1TTINd
c. Facility name (discharge):
d. Facility address:
Greensboro Site M
Title
2914 Patterson Street
Permit 1 ]older Mailing Address
Greensboro NC 27407
City State "Lip
(336) 547-71 14 336) 547-7126
Phone Fax
Dow Corning Corporation _
2914 Patterson Street
Address
Greensboro NC 27407
Cite State Zip
e. Facility contact person: Allen R. Hetzer [phone]
First 1 MI / Last Phone
III. Please provide the following for the requested change (revised permit).
a. Request for change is a result of: ❑ Change in ownership of the facility
® Name change of the facility or owner
If other please explain:
b. Permit issued to (company name): .
c. Person legally responsible for permit
d. Facility name (discharge):
e. Facility address:
The Dow Chemical Company
Darren W Cammin
First M1 Last
Greensboro Site Mana er
Title
2914 Patterson Street
Permit Bolder Mailing Address
Greensboro NC 27407
City State Zip
(336) 547-71 14 darren.w.canmiin(cdowcorning.com
Phone E-mail Address
Dow Silicones Corporation
2914 Patterson Street
Address
Greensboro NC 27407
City State Zip
f. Facility contact person: Allen R Hetzer
First M1 Last
[phone] allen.hetzera,doxvcorning.com
Phone ]-,'-mail Address
IV. Permit contact information (if different from the person legally responsible for the permit)
Revised Jan. 27, 2014
Lk

NPDES PERMIT NAME/OWNERSHIP CHANGE FORM
Page 2 of 2
Permit contact: Allen R Hetzer
First M 1 Last
Ehss Team Lead
Title
2914 Patterson Street
Mailing Address
Greensboro NC 27404
City State "Lip
[phone] allen.hetzerndowcoming.com _
Phone E-mail Address
V. Will the permitted facility continue to conduct the same industrial activities conducted prior
to this ownership or name change?
® Yes
❑ No (please explain)
VI Required Items: THIS APPLICATION WILL BE RETURNED UNPROCESSED IF ITEMS
ARE INCOMPLETE OR MISSING:
❑ This completed application is required for both name change and/or ownership change
requests.
❑ Legal documentation of the transfer of ownership (such as relevant pages of a contract deed,
or a bill of sale) is required for an ownership change request. Articles of incorporation are
not sufficient for an ownership change.
.....................................................................................................................
The certifications below must be completed and signed by both the permit holder prior to the change, and
the new applicant in the case of an ownership change request. For a name change request, the signed
Applicant's Certification is sufficient.
PERMITTEE CERTIFICATION (Permit holder prior to ownership change):
I. Darren Cannnin, attest that this application for a name/ownership change has been reviewed and is
accurate and complete to the best of my knowledge. I understand that if all required parts of this
application are not completed and that if all required supporting information is not included, this application
package will be returned as incomplete.
Id R March I, 2018
Signature Date
APPLICANT CERTIFICATION
1, Darren Cammin, attest that this application for a name/ownership change has been reviewed and is
accurate and complete to the best of my knowledge. I understand that if all required parts of this
application are not completed and that if all required supporting information is not included, this application
package will be returned as incomplete.
jj�>"_ 'L/
Signature
March 1, 2018
Date
PLEASE SEND THE COMPLETE APPLICATION PACKAGE TO:
Division of Energy, Mineral and Land Resources
Stonmvater Permitting Program
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Revised Jan. 27, 2014

UDow Silicones Corporation
MAR - ._i 20182914 Patterson Street
Greensboro, NC 27407
March 1, 2018
Ms. Laura Alexander
Division of Energy, Mineral and Land Resources
Stormwater Permitting Program
512 N. Salisbury Street
Raleigh, NC 27603
RE: Dow Corning Corporation Name Change
Dear Ms. Alexander:
In 2016, The Dow Chemical Company acquired 100% ownership of Dow Corning Corporation.
Since then, some of the sites have continued to operate as Dow Corning Corporation, a wholly -
owned subsidiary of The Dow Chemical Company. The Greensboro site is one of these sites.
This letter serves as notice that Dow Corning Corporation changed its name to Dow Silicones
Corporation, effective February 1, 2018. Please update your systems with the new legal entity
name Dow Silicones Corporation.
Please note that aside from the name change, the legal entity:
1) remains a corporation organized under the laws of the State of Michigan, United States
of America
2) remains a 100% wholly -owned subsidiary of The Dow Chemical Company
3) retains its historic Employer Identification Number (EIN) 38-0495575
Enclosed you will find our completed NPDES Permit Name Change Form to formally initiate this
name change with your agency.
Should you have any questions, please feel free to contact Richard Kelley at [phone] or
[e-mail].
Sincerely,
.D--,w-lJ. Czw�
Darren Cammin
Dow Silicones Corporation

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rxm rrkr.w.vr:
pp -Dow
September 19, 2016
Division of Stor nwater
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Delegation of Signature Authority
Dow Corning Greensboro Site
NPDES Number NCS000077
To Whom it May Concern:
fz L��-
NC Department of
Environmental Quality
Received
SEP 2 0 2016
Winston-Salem
Regional Office
Recently, Darren Cammin has replaced Jake Fitzgerald as Site Manager of the Dow Corning — Greensboro
Facility. By notice of this letter. I hereby delegate signatory authority to Darren Cammin for all permit
applications, discharge monitoring reports, and other information relating to the operations at the subject facility
as required by all applicable federal, state, and local environmental agencies specifically with the requirements
for signatory authority as specified in 15A NCAC 213.0506.
Contact Information
Mr. Darren Cammin
2914 Patterson Street
Greensboro. North Carolina 27407
[e-mail]
Office Phone [phone]
Mobile Phone [phone]
If you have any questions regarding this letter, please feel free to contact me at (336)547-71 14.
Sincerely,
_Do�_ �) a""—.
Darren Canino►
Greensboro Site Manager
2914 Patterso►► Street, Greensboro, NC 27406
darren.w.cammin a dowcorning.com
Office Phone [phone]; Mobile Phone [phone]
cc: NC DWR Winston-Salem Regional Office, Water Quality Permitting Section

Page I ol' 1
Dow Coming Corporation Greensboro
[Greensboro Plant] - 2914 Patterson Street Greensboro, NC 27407
Originator: CHELSEA FIELDS [CMFIELDS]
Phone :[phone]
Miscellaneous Shipping Request
MSR # 138943
Date Created : 2016-09-19
Ship to:
NC DENR
Divison of Air Quality
450 West Hanes Mill Road, Suite 300
Winston Salem , NC
27105
USA
Contact Name: NC DWR WINSTON SALEM REGIONAL
OFFICE, WATER QUALITY PERMITTING
Contact Phone: [phone]
Shipping Information:
Weight:
Carrier:
Tracking Number:
Containers:
Transport:
i First Day Air
NC Department of
Environmental Quality
Received
SEP 2 0 2016
Winston-Salem
Regional Office
Payment
PRPD
Cost Center:
Shipment Value:
0.01
Shipped by
00123400
. The requisitioner is responsible for attaching Material Safety Data Sheet(s) to the shipping
docurnents
Special Shipping Instructions:
None specified
Description: Letter of Delegation of Signature Authority
littp://intranetapp/returnorder/msr_report.asp?Froin=MSR&RecId=138943 9/19/2016

ff
•„a
Energy, Mineral &
Land Resources
ENVIRONMENTAL QUALITY
John Myers, QC Manager
Southern Resins, Inc.
3440 Denton Road
Thomasville, NC 27360
October 17, 2016
Subject: Compliance Evaluation Inspection
Permit No. NCS 000235
Southern Resins — Thomasville
Davidson County
Dear Mr. Myers:
PAT_ McCRORY
Governor
DONALD R.-VAN DER VAART
Secretary
TRACY DAVIS
ofrector
On October 12, 2016 Glen White of the North Carolina Department of Environmental Quality-,
Department of Energy, Minerals, and Land Resources met with you at the facility located at
3440 Denton Road, Thomasville, to conduct a compliance inspection per the Industrial
Stormwater Permit requirements. Inspection consists of review of the Stormwater Pollution
Prevention Plan, training, monitoring and spills records as well as observation of the general
condition of the site, the outfalls and any possible exposures to downstream stormwater. Your
assistance with the inspection was greatly appreciated.
Permit:
This facility holds Individual Stormwater Permit NUS 000235 to discharge stormwater from
industrial activity associated with industrial processes under the National Pollutant Discharge
Elimination System (NPDES). The permit became effective November 1, 2010 and expires on
October 31, 2015, The facility remains covered under the expired permit until a new permit is
issued. A copy of the current permit is required to be maintained with the Stormwater Pollution
Prevention Plan (SPPP) documents. The permit was available for review at the time of
inspection.
Records/Reports:
This facility was required to develop and maintain a (Stormwater Pollution Prevention Plan)
SPPP in accordance with Part II, Section A of the permit. The facility has developed a SPPP.
Training and spills records are current and maintained. Monitoring has been performed as per
the permit. Rainfall records are recorded daily at Pond 3 Outfall. Weekly inspections are
conducted at each of the containment areas and samples are taken before any contained area'can
be discharged. No deficiencies found.
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
Winston-Salem Regional Office 1450 Hanes H11; Road, Suite 300 I Winston-Salem, NC Z7103.
336 776 9800

Facility Site Review:
This facility manufactures the main ingredient for making Elmer's School. Glue and makes the
resin used to make the fiberglass fiber used in air filters. The facility has several containment
areas that contain tanks and vats used in production processes. Many of the facilities are new
and added within the past year. The plant has three (3) stormwater ponds. They are designed to
function in series. Stormwater drains to Pond 1, then into Pond 2, then Pond 3 before it
discharges through two (2) pipes that outlet to Hamby Creek.
Effluent Receivinp, Waters:
Effluent from this facility drains to Hamby Creek, class "C" waters of the Yadkin Pee Dee River
Basin.
Self -Monitoring Program:
The permit requires qualitative and analytical monitoring be conducted twice annually unless a
Tiered Response is triggered. The facility is currently operating in Tier II Response due to
consecutive parameter exceedance for Formaldehyde and Nitrogen.
This facility was very well maintained and stormwater records were well documented and
current. The facility was found to be compliant with requirements of its industrial stormwater
permit. If you have questions or need additional information, please contact Glen White at (336)
776-9660.
Sincerely,
Matthew E. Gantt, P.E.
Regional Engineer
Land Quality Section
Winston-Salem Regional Office
Enclosures: Inspection Report
cc: File Copy Division of Energy, Mineral and Land Resources (WSRO)
State ofNorth Carolina I Environmental Quality I Energy, Mineral and land Resources
WlnstomSalem Regional office 1 450 HanesUll Road, Sulte 300. 1 Winston-Salem NC 27103
336 776 9800

Permit: NCS000235
SOC:
County: Davidson
Region: Winston-Salem
Contact Person: Allen Grubb
Directions to Facility:
System Classifications:
Primary ORC:
Secondary ORC(s):
On -Site Representative(sj:
Related Permits:
Compliance Inspection Report
Effective: 11/01/10 Expiration: 10131/15 owner: Southern Resin Inc
Effective: Expiration: Facility: Southern Resin incorporated
3440 Denton Rd
Inspection Date: 1011212016
Primary Inspector: Glen White
Secondary Inspector(s):
Title: Operations Mgr.
Entry Time: 11:30AM
Reason for Inspection: Routine
Permit Inspection Type: Stormwater Discharge, Individual
Facility Status: Compliant ❑ Not Compliant
Question Areas:
■ Storm Water
(See attachment summary)
Certification:
Thomasville NC 27360
Phone: [phone]
Phone:
Exit Time: 12:30PM
Phone: [phone]
Inspection Type: Compliance Evaluation
Page: 1

Porrnit: NCS000235 Owner - Facility: Southern Resin Inc
trispection Date: 10/1212016 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
(See Compliance Letter)
Page: 2

Permit: NCS000235 Owner -Facility: Southern Resin Inc
Inspection Date: 1011212016-- . inspection Type: Compliance Evaluation Reason for Visit: Routine -
Analytical Monitoring Yes No NA NE
Has the facility conducted its Analytical monitoring? E ❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ 0 ❑
Comment: Analytical monitoring being conducted monithly in Tier II Response due to consecutive
exceedance of Formaldehyde and Nitrogen. Continue to monitor monthly until three consecutive
samples result within threshold.
Permit and Outfalls Yes No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? ❑ ❑ ❑
# Were all outfalls observed during the inspection? 0 ❑ ❑ ❑
# If the facility has representative outfall status, is it properly documented by the Division? ❑ ❑ ■ ❑
# Has the facility evaluated all illicit (non stormwater) discharges? 0 ❑ ❑ ❑
Comment: No deficiencies.
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi-annually? 0 ❑ ❑ ❑
Comment: Conduct Monitoring per permit.
Stormwater Pollution Prevention Plan
Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan?
E
❑ ❑ ❑
# Does the Plan include a General Location (USGS) map?
!
❑ ❑ ❑
# Does the Plan include a "Narrative Description of Practices"?
■
❑ ❑ ❑
# Does the Plan include a detailed site map including outfall locations and drainage areas?
0
❑ ❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
N
❑ ❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
E
❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
N
❑ ❑ ❑
# Does the Plan include a BMP summary?
0
❑ ❑ ❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
0
❑ ❑ ❑
# Does the Plan include a Preventative Maintenance and Good Housekeeping Plan?
0
❑ ❑ ❑
# Does the facility provide and document Employee Training?
E
❑ ❑ ❑
# Does the Plan include a list of Responsible Party(s)?
❑ ❑ ❑
# Is the Plan reviewed and updated annually?
❑ ❑ ❑
# Does the Plan include a Stormwater Facility Inspection Program?
E
❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented?
0
❑ ❑ ❑
Page: 3

permit; NCS000235 Owner - Facility_ Southern Resin Inc
- - - Inspection Date: 1011212016 - - - Inspection Type: Compliance Evaluation _ Reason for Visit: -Routine -
Stormwater Pollution Prevention Plan Yes No NA NE
Comment: All records Complete. Training conducted annually. Currently in Tier II for consecutive
exceedance_of Formaldehyde and Nitrogen. Monitoring as required. Weekly site inspections
conducted throughout the facility. Well documented. No deficiencies.
Page: 4

►" City of Greensboro
►,. J North Carolina
August 7, 2013
Ronica Edgerton
Dow Corning
2914 Patterson Street
Greensboro, NC 27407
RE: Industrial Compliance Inspection
Inspection location: Dow Corning
2914 Patterson Street
SW Permit #: NCS000077
Dear Ms. Edgerton:
On August 7, 2013 the City of Greensboro Stormwater Management Division completed an
industrial compliance inspection of Dow Corning. Local regulations permit an inspection of
industrial facilities under authority granted by City of Greensboro Code of Ordinance Chapter
30, Article 12, Section 7.1 (C-5). This inspection consisted of two parts: a review of the facility
files/records and an on -site facility inspection.
The inspection was performed by Debbie Shoffner, and the following deficiencies/observations
were noted during the inspection.
Stormwater Pollution Prevention Plan/Spill Plan Review
Site Maps and SWP3
♦ No deficiencies observed.
Spill Prevention and Response Plan
♦ No deficiencies observed.
Monitoring
♦ No deficiencies observed.
Employee Training
♦ No deficiencies observed.
P.Q. Box 3136 . Gmensboro, ETC 27402-3136 • www.greensboro-ne.gov , (3:36) 373-CITY (2489) � T Y # 333-6930

Site Inspection
Preventative Maintenance/Good Housekeeping
♦ No deficiencies observed.
Non-Stormwater Discharges
♦ No deficiencies observed.
We appreciate your continued cooperation and proactive approach. If you have questions or
concerns at any time, please contact me at 336-373-2741 or Debbie.Shoffner@greensboro-
nc.gov.
Sincerely,
/
� §x4"_
Debbie Shoffner, Water Quality Specialist
City of Greensboro, Water Resources Department
cc: Peter Schneider, Water Quality Supervisor
Aana Taylor -Smith, N.C. Dept. of Environment and Natural Resources
Industrial Inspection File

NCS000077
Recommendations- Based on the documents reviewed, the application information submitted on October 5, 2011
sufficient.to issue an Individual Stormwater Permit.
Prepared by (Signature) Date `� G
�.
Stormwater Permitting Unit Supervisor. ' -' _Q e Date Z. z
for Bradley. Bennett -
Concurrence by Regional Office Date _
RO'WaterQuality Supervisor Date
(attach additional pages as necessary)
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Page 10 of 10

Mickey, Mike
From:
Bennett, Bradley
Sent:
Thursday, February 28, 2013 9:52 AM
To:
Mickey, Mike
Cc:
Patterson, Robert
Subject:
RE: Dow Corning - NCS000077 - Draft Permit
Mike,
Sorry, we are a little backed up on the NCS renewals right now. I dropped the ball on this one, and didn't realize we had
received the regional office response on it. We have that and we need to finalize the draft and send the permit out to
public notice.
BB
Bradley Bennett
Stormwater Permitting Unit Phone: [phone]
NC Division of Water Quality j Fax: [phone]
1617 Mail Service Center Email: bradley.bennett(a nodenr.gov
Raleigh, NC 27699-1617 Web: httg:lloortal.ncdenr.org/web/Wgfws/su
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties,
From: Mickey, Mike
Sent: Thursday, February 28, 2013 9:02 AM
To: Berinett, Bradley
Cc: Patterson, Robert
Subject: FW: Dow Corning - NCS000077 - Draft Permit
Bradley — Any luck in tracking down the status of the Dow Corning draft permit? Mike.
From: Patterson, Robert
Sent: Monday, February 25, 2013 6:52 AM
To: Bennett, Bradley
Cc: Mickey, Mike
Subject: FW: Dow Corning - NCS000077 - Draft Permit
Bradley— Do you know about this one that Jennifer was working on?
Robert D. Patterson, PE
Environmental Engineer
NCDENR I DWQ I Stormwater Permitting
1617 Mail Service Center, Raleigh, NC 27699-1617 Mail 1 512 N. Salisbury St, 91h Floor, Raleigh, NC 27604 Location & Parcels
[phone] Phone [phone] Fax I Robert. Patterson r�cdenr.gov Email I http_//portal.ncdenr.org/webJIVg/.ws/su Website
From: Mickey, Mike
Sent: Friday, February 22, 2013 3:13 PM
To: Patterson, Robert
Subject: Dow Corning - NCS000077 - Draft Permit
Hi Robert — I was at Dow Corning today and they asked about the renewal of their individual stormwater permit.
I assume it fell through the cracks once Jennifer left. Has it been reassigned?

Thanks, Mike.
Permit: NCS000077 Status: In draft
Nandatoryll
EventType
l Event Date
' Due Date
Comment
Last a date...
Update D'
Be
Region comments on draft requested
04/0312012
0413012012
jennifer.jones
041031201.'
0
Region comments on draft received
04/3012012
jennifer.jones
041031201:
Application reviewed
03I2912012
jennifer.jones
03129/201,
Permit Drafting Initiated
0312912012
jennifer.jones
03/291201.
draft to additional reviewers
03/29/2012
jennifer.jones
031291201:
0
IDraft from additional reviewers
04102/2012
jennifer.jones
04103/201'
Be
jApplication received
10/0512011
jennifer.jones
121221201'
Ej
Application acknowledged
jennifer.jones
121221201'
11
Public notice published
jennifer.jones
1121221201'
0
Scheduled issuance
jennifer.jones
1121221201'
r❑
Permit issued
jennifer.jones
1121221201'
Mike Mickey
Mike .Mickev(mNCDENRxov
NC Division of Water Quality
585 Waughtown Street
Winston-Salem, NC 27107
Phone: [phone]
FAX: [phone]

Taylor -Smith, Aana
From: [e-mail]
Sent: Thursday, September 19, 2013 10:20 PM
To: Taylor -Smith, Aana
Cc: [e-mail]
Subject: RE: Dow Corning Permit Renewal (NCS000077)
Hi Aana,
Thank you for the followup. We have not received any new Certificate of Coverage and are still operating under our
existing permit.
From: Taylor -Smith, Aana[ma iIto: Aana.Taylor- Smith ncdenr.gov_]
Sent: Thursday, September 19, 2013 9:17 AM
To: EDGERTON, RONICA S. (RSEDGERT)
Cc: Shoffner, Debbie (Deborah, ShoffnerC&greensboro-nc.gov}
Subject: Dow Corning Permit Renewal (NCS000077)
Hi Ronica,
Have you received a new Certificate of Coverage for Dow Corning's Individual Stormwater Permit? I just left a message
with Ken Pickle of our Stormwater Permitting Unit to check on its status, but he appears to be out of the office at the
moment. I'll make sure to keep you in the loop when I find out more, if you haven't already received your permit
renewal.
Thanks, and have a great day!
Aana Taylor -Smith
Land Quality Section
Division of Energy, Mineral, and Land Resources
NC DENR Winston-Salem Regional Office
Phone: [phone]
Fax [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties.

Taylor -Smith, Aana
From:
Taylor -Smith, Aana
Sent:
Thursday, August 08, 2013 2:23 PM
To:
[e-mail]'
Cc:
Shoffner, Debbie ([e-mail])
Subject:
RE: permit renewal
Hi Ronica,
I just heard back from the Stormwater Permitting Unit. Dow Corning's renewal application was received and is in
"review" status at this time. The reviewer who was working on your permit no longer works for the State, so it ended up
with the SPU supervisor, Bradley Bennett, after she left. He has been holding it due to a high workload, which is why it
has been so long since you've received word from us. Mr. Bennett is out today but I have left him a message about this
permit and I will continue to remind him about it until it is completed.
Until a new permit is issued, Dow Corning is still covered under the expired permit and all permit requirements remain
the same. The renewal application was received on time and you're up to date on the billing, so everything is in
compliance as far as your permit is concerned. It is my sincere hope to have a new permit on its way to you as soon as
possible. I apologize for the inconvenience, but please rest assured that your facility is still covered and we're working to
resolve this situation.
Thank you so much for your patience and flexibility! I look forward to working with you in the future.
Aana Taylor -Smith
Land Quality Section
Division of Energy, Mineral, and Land Resources
NC DENR Winston-Salem Regional Office
Phone: [phone]
Fax [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties.
From: Shoffner, Debbie [mailto:[e-mail]]
Sent: Thursday, August 08, 2013 1:40 PM
To: '[e-mail]'
Cc: Taylor -Smith, Aana
Subject: permit renewal
Hi, Ronica. I contacted someone with the state regarding your permit. She has a call into the Raleigh office to find out
the status and will get in touch with one of us as to what she finds out.
I've copied her on this email so you two can communicate directly as needed. (BTW, she is now your state contact
regarding your stormwater permit instead of Mike Mickey whom you met with last.)
Let me know if you have any questions.
Debbie

Taylor -Smith, Aana
From: Pickle, Ken
Sent: Thursday, August 08, 2013 2:20 PM
To: Taylor -Smith, Aana
Subject: FW: Permit Status? NCS000077
Ken Pickle
Environmental Engineer
NCDENR I DEMLR I Stormwater Permitting Program
1612 Mail Service Center, Raleigh, NC 27699-1612
512 N. Salisbury St, Raleigh, NC 27604
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: http://portal.ncdenr.o[g/web/ir/stormwater
** Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulations.**
From: Pickle, Ken
Sent: Thursday, August 08, 2013 2:18 PM
To: Sullivan, Shelton
Cc: Bennett, Bradley; 'aana'
Subject: RE: Permit Status? NCS000077
Shelton: Done.
BB: Are you holding Jennifer's not -yet -completed renewal for NCS000077?
Aana: Our records show that we have received the permit renewal application. On the basis of a timely renewal
application, the permittee continues to be covered under the expired permit until we can act on the renewal request.
Ken
Ken Pickle
Environmental Engineer
NCDENR I DEMLR I Stormwater Permitting Program
1612 Mail Service Center, Raleigh, NC 27699-1612
512 N. Salisbury St, Raleigh, NC 27604
Phone: [phone]
Fax: [phone]
Email: ken.pickle(a)ncdenr.gov
Website: http://portal.ncdenr.org/web/Ir/stormwater
** Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulations.**
From: Sullivan, Shelton
Sent: Thursday, August 08, 2013 2:07 PM
To: Pickle, Ken

Cc: Bennett, Bradley
Subject: RE: Permit Status?
do not see her name at all, but okay. Can you and/or Bradley give Aana a call. Thanks
Shelton Sullivan
NC!)ENR I Division of Water Resources - \Water Quality Programs
Wetlands. Buffers, Streams Compliance and Permitting (1Vebscape) Unit
1650 ,Mail Service Center, Raleigh, NC 27699-1650
Phone: (919)SO -6361 Fax: (919)s)7-6494
Email: [e-mail]
1•Vebsite: http://portal.ncdenr-ory/web/wq/sNvp/Nvs/NvebscaM
E-mail correspondence to and from this address may be subject to the North Carolina Public Records taw and may be disclosed to
third parties
bA .Please consider the cnvironntcrn before printing this c mail.
From: Pickle, Ken
Sent: Thursday, August 08, 2013 2:03 PM
To: Sullivan, Shelton
Cc: Bennett, Bradley
Subject: RE: Permit Status?
Shelton,
I see other indications that Jennifer Jones had this one, up through March 2012, and that the status is now, "in
Review". I think Bradley may be holding this one. He has held some of Jennifer's, since there haven't been enough
warm bodies to process all our backlog for quite a while.
Ken
Ken Pickle
Environmental Engineer
NCDENR I DEMLR I Stormwater Permitting Program
1612 Mail Service Center, Raleigh, NC 27699-1612
512 N. Salisbury St, Raleigh, NC 27604
Phone: [phone]
Fax: [phone]
Email: ken. [e-mail]
Website: http_//portal.ncdenr.org/web/Ir/stormwater
** Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulations.**
From: Sullivan, Shelton
Sent: Thursday, August 08, 2013 1:57 PM
To: Sennett, Bradley; Georgoulias, Bethany; Pickle, Ken; Randall, Mike; Diuguid, Bill; Devane, Boyd
Subject: RE: Permit Status?
Looks like it was Brian at some point...

Shelton Sullivan
NCDENR I Division of Water Resources - Water Quality Programs
Wetlands. i;uilei•s, Streams - Compliance and Pcrmitting (%, ehscape) Unit
1650 -Mail ScrOce Center, Ralei,h, NC 276991650
Phone: [phone] Fax: (919)S07.6494
Email [e-mail]
Wcbsitc: httV://portki.nedenr.or5z/web/wq/,-,wp/ws/Nvebscape
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties
bA Please. consider tiic environnIcnt before printing this c.niail.
From: Sullivan, Shelton
Sent: Thursday, August 08, 2013 1:35 PM
To: Bennett, Bradley; Georgoulias, Bethany; Pickle, Ken; Mike.Randall; Diuguid, Bill; Devane, Boyd

(Boyd.DeVane(&ncdenr.gov)
Subject: Permit Status?
Got a call from Aana Taylor -Smith in WSRO regarding this permit. What is the status and who is the reviewer? Please let
me know and give Aana a call at 336-771-5034.
Thanks
Shelton. Sulli.vzn
\CDf=NR I Division of Water Rcsources -- \Neater Quality Programs
Wetlands, Buffers, Streams - Compliance and Permitting (`Vebscape) Unit
1650 ,Nlail Service Ccnter, Raleigh. ti'C 2 699.1650
Phone. [phone] Fax: [phone]
Email: [e-mail]
\ cbsite: http://portd,nedenc.om/web/wg/swp/ws/Nve.bscai)c

Taylor -Smith, Aana
From: Shoffner, Debbie <[e-mail]>
Sent: Thursday, August 08, 2013 1:37 PM
To: Taylor -Smith, Aana
Subject: RE: Dow Corning, NCS000077, 2013 Inspection
Thanks for checking into that. I'm going to send a note about it to the woman at Dow Corning, and I'll copy you on it so
you two can communicate directly.
Debbie Shoffner, Water Quality Specialist
Department of Water Resources
City of Greensboro
Phone:[phone] Fax:[phone]
PO Box 3136, Greensboro, NC 27402-3136
www.greensboro-nc.gov
From: Taylor -Smith, Aana[mailto:Aana.Taylor-SmithC&ncdenr.gov]
Sent: Thursday, August 08, 2013 1:32 PM
To: Shoffner, Debbie
Subject: RE: Dow Corning, NCS000077, 2013 Inspection
Hey Debbie,
I looked it up in our database and I think the person who was reviewing that permit no longer works here. I called our
contact in Raleigh to figure out what happened with that permit, and they are going to get back tome with that
information. Hopefully I'll have an update for ya soon.
Thanks!
Aana Taylor -Smith
Land Quality Section
Division of Energy, Mineral, and Land Resources
NC DENR Winston-Salem Regional Office
Phone: [phone]
Fax [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to
third parties.
From: Shoffner, Debbie [mailto: Deborah. [e-mail]]
Sent: Thursday, August 08, 2013 9:55 AM
To: Taylor -Smith, Aana
Subject: RE: Dow Corning, NCS000077, 2013 Inspection
forgot to ask this. Dow Corning apparently submitted a permit renewal application over a year ago. Any idea as to the
status of them receiving a new permit?
Debbie Shoffner, Water Quality Specialist
Department of Water Resources
City of Greensboro

Phone:[phone] Fax:[phone]
PO Box 3136, Greensboro, NC 27402-3136
www.g reensboro-nc. qov
From: Taylor -Smith, Aana [mailto:[e-mail]]
Sent: Thursday, August 08, 2013 7:58 AM
To: Shoffner, Debbie
Subject: RE: Dow Corning, NCS000077, 2013 Inspection
Hey Debbie!
Thanks for the inspection letter. Sue and I are doing inspections in a new way for us — we're splitting it up by industry. I
have attached the file that shows who does which industrial category. I'm doing the individual permits for right now. If
you want, you can just send all the inspection letters to me and I'll distribute, since memorizing spreadsheets isn't the
most fun thing in the world :p
I did get filled in on the inspection schedule with GSO and that should be fine. I miss you guys though! Hopefully I'll get
to see you soon, since I'm not stuck in Rockingham County all the time now. Are you still working with the Conservator's
Center/doing plays? i still want to come to one of those if you are! And don't think of it as answering to me — we just
work together O
Tell everyone I said hi!
Aana Taylor -Smith
Land Quality Section
Division of Energy, Minerai, and Land Resources
NC DENR Winston-Salem Regional Office
Phone: [phone]
Fax [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records law and may be disclosed to
third parties.
From: Shoffner, Debbie [mai Ito: Deborah. Shoffner@greensboro,-nc.4ov]
Sent: Wednesday, August 07, 2013 3:31 PM
To: Taylor -Smith, Aana
Subject: Dow Corning, NCS000077, 2013 Inspection
Yo, Aana!
I've attached a letter from a recent inspection. Let me know if there are questions.
So you and Sue are the contacts now for NPDES inspections, correct? Either of you more primary than the other? (IOW,
any particular one of you who should be copied on letters and such?)
I assume that Mike or Corey has filled you in on the inspection schedule set up between GSO and your folks, and that all
still works for you. Let me know if not.
I hope you are well! (But OMGee, what kinda world is it when we start answering to our past interns?! (:-0 )

& WAT/Ck
Michael F. Easley, Governor
't Q
bWilliam
State of North Carolina
G. Ross, Jr., Secretary
F
Department of Environment and Natural Resources
Alan W. Klimek, P-E., Director
Division of Water Quality
Ms. Kelle Beatty
Environmental Engineer
Dow Corning, Greensboro Plant
2914 Patterson Street
Greensboro, North Carolina 27407
Dear Ms. Beatty:
May 2, 2007 ---_
RECEIVED
101. of ENR
MAY 03W7,
�'+�nsten•Selerrt
Rogionat oNlce
Subject: Final NPDES Stormwater Permit
Permit NCS000077
Dow Corning
Guilford County
This letter is in response to our telephone discussion this morning and will serve to correct an error
on the April 27, 2007 cover letter to your newly issued individual permit. The previous letter stated
that Outfall 001 was representative of Outfall 002, which was incorrect. You have been granted
representative outfall status to sample Outfall 002 as representative of Outfall 001. Outfalls 003, 004,
and 005 must continue to be sampled. Thank you for bringing this error to our attention.
If you have any questions or comments concerning this change, contact Kelly Johnson at [phone] x
376 or [e-mail].
Sincerely,
VellyVJison
Environmental Engineer
cc: <Winston-Salem Regional -Office, Korev'Basingger
Stormwater Permitting Unit
Central Piles
enc: Stormwater Permit, NCS 000077
North Carolina Division of Water Quality [phone]
1617 Mail Service Center FAX [phone]
Raleigh, North Carolina 27699-1617 On the Internet at http://h2o.enr.state.nc.us/

Ms. Kelle Beatty, Environmental Engineer
Dow Corning
2914 Patterson Street
Greensboro, North Carolina 27407
SUBJECT: Compliance Evaluation Inspection
Dow Corning
NPDES Permit No. NCS000077
Guilford County
Dear Ms. Beatty:
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
24 April 2007 Division of Water Quality
A Compliance Evaluation Inspection was performed on the Dow Corning stormwater facilities on April 24, 2007 by Corey
Basinger of the Winston-Salem Regional Office. In addition to yourself, Penny Partido and Kevin Musser were present for
the inspection. The inspection consisted of two parts: an on -site inspection of the stormwater facilities and an in -office file
review. The following are the findings from the subject inspection.
I. Permit
The NPDES permit for Dow Corning became effective on January 1, 2000 and expired on December 31, 2004. A new
permit is currently in draft fors and should be reissued in the near future,
II. Records/Reports
A review of the Stormwater Pollution Prevention Plan (SPP Plan) revealed that all areas of concern had been addressed.
The SPP Plan was very comprehensive and well organized.
III. Facili", Site Review
All outfalls noted in the SPP Plan were inspected and found to be satisfactory. The facility requested representative outfall
status for Outfall 002 in a letter dated March 29, 2007. Based on observations made during the site visit, this Office
recommends approval of representative outfall status for Outfall 002 (Outfall 001 will no longer require monitoring once
final approval is granted through the Division's Central Office).
IV. Effluent & Receiving Waters
Dow Coring discharges stormwater to an unnamed tributary to South Buffalo Creek in the Cape Fear River Basin,
V. Self-Monitorin Pro ram
All monitoring requirements required by the permit have been met.
Overall, the facility was deemed to be in compliance with NCS000077. The Division greatly appreciates your continued
efforts to maintain compliance with the subject permit and solicits any input you may have regarding this inspection report,
If you should have any questions or concerns regarding this report, please contact this Office at (336) 77 t-5000.
Sincerely,
Steve W. Tedder
Water Quality Supervisor
Cc: Central Files,�WS_ RRO�
N�or,�` Carolina
aturally
North Carolina Division of Water Quality 585 Waughtown Street Phone [phone] Customer Service
Winston-Salem Regional Office Winston-Salem, NC 27107 Fax [phone]
Internet: www.newaterquality.ora,
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper

Form Approved
OMB No-2040-0057
F ^a
Approval Expires
8-31-98
United States Environmental Protection AEencv_ Washineton D.C._ 20460
Section A: National Data System Coding
Transaction Code . NPDES No. Yr/NIo/Day Inspection Type Inspector FacilityType
N 5 NCS000077 07-04-24 C S 2
Facility Evaluation Rating BI QA ......Reserved...........
4 N N
Section B: Facility Data
Name and Location of Facility Inspected:
Entry Time:
Permit Effective
Dow Corning
0950 hrs.
Date: Ian 1, 2000
2914 Patterson Street
Greensboro, NC 27407
Exit Time:
Permit Expiration
1050 hrs.
Date: Dec 31, 2004
Name(s) of On -Site Representative(s): Title(s): Phone No(s):
Ms. Kelle Beatty Environmental Engineer 336-547-7183
Ms. Penny Partido Environmental Operations Coordinator 336-547-7129
Mr. Kevin Musser Environmental, Health and Safety Team Leader 336-547-7120
Name, Address of Responsible Official:
Title:
Ms. Kelle Beatty
Dow Corning
Phone No. 336-547-7183
Contacted' Yes
2914 Patterson Street
Greensboro, NC 27407
Section C: Areas Evaluated During Inspection
• Permit • Stormwater facilities
• Records/Reports • Self -Monitoring Program
• Facility Site Review
Section D: Summary of Findings/Continents
Permit..................................Current permit expired December 31, 2004. New permit is in draft.
Records/Reports ..................All records and reports were available and very thorough.
Facility Site Review ............ No problems noted during site inspection. Representative Outfall Status granted for Outfall 002.
Self -Monitoring Program .... All monitoring conducted as per permit requirements.
Name(sl and Signa e(s) of Inspectors:
Agency/Office/Telephone:
Date:
DWQ / WSRO I [phone]
Z4 ,/ t _
Signature of Revie en
Agency/Office:
Date:
4 (�I
DWQ / WSRO / [phone]
I pyo2-s D %

Stormwater Inspection Checklist
Type of Visit: ® Compliancelnspection/Program ❑Technical Assistance ❑ Recon
Location: 2914 Patterson Street, Greensboro, NC .
Facility Name: Dow Coming . Permit No. NCS000077 . Date: 24 April 2007
Time in: 09:50 am .Time Out 10:50 am . NamelTitle of contact(s):(1) Kelle Beatty, Environmental Engineer (2) Penny Partido,
Environmental Operations Coordinator (3) Kevin Musser,_ Environmental Health and Safety Team Leader.
YES
NO
NA
NE
1.
Is a copy of the Permit and the Certificate of Coverage available at the site?
®
❑
❑
❑
2.
Does the Plan include a General Location (USGS) map?
®
❑
❑
❑
3.
Does the Plan include a "Narrative Description of Practices"?
®
❑
❑
❑
4.
Does the Plan include a detailed site map including outfall locations?
®
❑
❑
❑
5.
Does the Plan include a list of significant spills in the past 3 years?
®
❑
❑
❑
6.
Has the facility evaluated all illicit (non Stormwater) discharges to the storm
Sewer system?
®
❑
❑
❑
7.
Has the facility evaluated feasible alternatives to current practices?
®
❑
❑
0
8.
Does the facility provide all necessary secondary containment?
®
❑
❑
❑
9,
Does the Plan include a BMP summary?
®
❑
❑
❑
10.
Does the Plan include a Spill Prevention and Response Plan (SPRP)?
®
❑
❑
❑
11.
Does the Plan include a Preventative Maintenance and Good Housekeeping Plan?
®
❑
❑
❑
12.
Does the facility provide and document Employee Training?
®
❑
❑
❑
13.
Does the Plan include a list of Responsible Party(s)?
®
❑
❑
❑
14.
Is the Plan reviewed and/or updated annually?
®
❑
❑
❑
15.'
Does the Plan include a Stormwater Facility Inspection Program?
®
❑
❑
❑
16.
Has the Plan been implemented?
®
❑
❑
❑
17.
Has the facility conducted its Qualitative Monitoring semi-annually?
®
❑
❑
❑
18.
Has the facility conducted its Quantitative (Analytical) monitoring?
®
❑
❑
❑
19.
Does the facility have Vehicle Maintenance activities on site (uses more than
55 gallons of new motor oil per month)?
❑
❑
®
❑
19a. Has the facility conducted its Annual Quantitative (Analytical) monitoring at outfalls
receiving runoff from Vehicle Maintenance areas?
❑
❑
®
❑
20.
Were all outfalls observed during the inspection?
®
❑
❑
❑
21.
If the facility has representative outfall status, is it properly documented by the
Division?
®
❑
❑
❑
Comments;
** Facility requested Representative Outfall Status via letter dated 3129/2007. WSRO recommends approval of
Representative Outfall Status for Outfall 002. Outfall 001 is no longer needed as Outfall 002 is representative of Outfall 001
& Outfall 002.
Inspector Name: �i_ �- � "r Date: _z4-AP�Lu 764 ?-

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
DIVISION OF WATER QUALITY
24 April 2007
MEMORANDUM
TO: Central Files
FROM: Corey Basinger, EE II
Steve Tedder, SWP Supervisor
Winston-Salem Regional Office
SUBJECT: Tax Certification Request .
TCS Certification No.TCS-WS-131
Dow Corning Corporation
2914 Patterson Street
Greensboro, NC 27407
Guilford County
Subject facility submitted a request for a Tax Certification of pollution abatement equipment authorized
for use by Permit NCS000077 for local tax credits. Corey Basinger, Environmental Engineer, Winston-Salem
Regional Office, visited this facility on April 24, 2007, to verify that subject wastewater/stormwater treatment
systems were installed and operating properly. Therefore, it is the opinion of the Winston-Salem Regional
Office that the stormwater/wastewater treatment equipment was installed for the purpose of abating pollution in
the Cape Fear River Basin.
If there are any questions or further clarification is needed, please do not hesitate to contact me at
336-771-4963.
Attachments
o ` Carolina
NNaturally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: h2o.enr.state.nc.us 512 N. Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer— 50% Recycled110% Post Consumer Paper

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
24 April 2007
Mr. John Tierney, Tax Manager
Dow Corning Corporation
Tax Department, CO1112
PO Box 994
Midland, MI 48686-0994
SUBJECT: Tax Certification of Pollution Abatement Equipment
Dow Corning Corporation
2914 Patterson Road, Greensboro, NC
Guilford County
Dear Tierney:
Transmitted herewith are two (2) copies of a Tax Certification No. TCS-WS-131
covering the construction and operation of wastewater treatment equipment, which were
authorized and are operating under Permit No. NCS000077.
This Certification may be used by the industry to obtain tax benefits in keeping with the
appropriate lags and supersedes any previous Certification issued for wastewater treatment
equipment located at this site.
Sincerely,
Steve W. Tedder
Water Quality Supervisor
Cc: Ms. Kelle Beatty (Dow Coming; 2914 Patterson Street, G'boro, NC 27407)
County Tax Administrator
Central Files
Np e Carolina
Naturally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: h2o.enr.state nc.us 512 N. Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal OpportunitylAffirmative Action Employer— 50% Recycled110% Post Consumer Paper

�pF W A 7-F9p Michael F. Easley, Governor
William G. Ross Jr., Secretary
rNorth Carolina Department of Environment and Natural Resources
Aian W. Klimek, P.E. Director
Division of water Quality
NORTH CAROLINA
DEPARTMENT OF ENVIRONTNIENT AND NATURA-L RESOURCES
TAX CERTIFICATION
(Franchise/Privilege; Amortization; Ad Valorem)
In accordance with the provision of the General Status of North Carolina (G.S. 105-
122(d), 105-130.10, 105-275(8), this Tax Certification TCS-WS-131 is to certify that:
Dow Corning Corporation
2914 Patterson Street
Greensboro, NC 27407
Guilford County
has been issued Permit NCS000077, which gives authorization to operate wastewater pollution
abatement equipment consisting of the following:
ITEMS
1. 17201116 Membrex Wastewater System
2. 17404522 Spill Containment at Dock Area
3. 17404705 Membrex Repiping
4. 17404969 Membrex Wastewater System
The Environmental Management Commission and the Department of Environment and Natural
Resources have found that the subject pollution abatement equipment:
(a) has been constructed or installed;
(b) complies with the requirements of the Environmental Management Commission;
(c) is being effectively operated in accordance with the terms and conditions of the
Permit, Certification of Approval, or other document of approval issued by the
Commission, and
(d) has primary rather than incidental purpose in the reduction of water pollution
resulting from the discharge of sewage and waste.
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617
Customer Service
Intemel: h2o.enr.state.ncus 512 N- Salisbury St. Raleigh, NC 27604
623-6748
Phone [phone]
FAX [phone]-
Nne
or hCar
Natur,
An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper

Issued this 24th day of April 2007.
By direction of the Environmental Management Commission and the Department of
Environment and Natural Resources.
Ste Ve W. Tedder
Water Quality Supervisor
Winston-Salem Regional Office

January 29, 2007
NC Division of Water Quality
585 Waughton Street
Winston Salem, NC 27107
ATTN: Steve Tedder
RECEIVED
FEB 0 5 2007
Please consider the following pollution control equipment for exclusion from personal
property tax in accordance with �34-026.07 Pollution Abatement Property (§ 105-
275(8)(a)):
17201116 Membrex Wastewater System
17404522 Spill Containment at Dock Area
17404705 Membrex Repiping
17404969 Membrex Wastewater System
Our permit information is:
Dow Corning Corporation
Facility Number: 04/41/00239
NPDES Stormwater Permit # NCS000077
If you have any questions please feel free to contact Machelle George at 989-496-8049 or
myself at the number listed below.
Regards,
X
Sohn ieme
Tax Manager
Dow Corning Corporation
Tax Department,' CO I,l 12
P.O. Box 994
Midland. MI 48686-0994
Phone: [phone]
Fax: [phone]
Dow Corning Corporation
A9idland. Michigan 48680-0994
Phone: (989) 4%-4000
w'w'w'.dow'cornl ng'.conl

March 29, 2007
Ms. Kelly Johnson
Environmental Engineer
North Carolina Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Ms. Johnson:
In response to your draft Stormwater Permit (No. NCS000077) letter dated February 27,
2007 Dow Corning Corporation would like to request representative outfall status for
Outfall 001.
If there are any questions or comments, please contact me at [phone].
Sincerely,
Kelle Beatty
Dow Corning Corporation
Environmental Engineer
0,11
� t
tr `
Dow Corning Corporation
Greensboro Plant
2914 Patterson St.
Greensboro, NC 27407
Phone: [phone]
Fax: [phone]

�r
NC®ENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Division of Water Quality
Coieen M. Sullins
Director
24 September 2010
Ms. Kelle Beatty, Environmental Engineer
Dow Corning
2914 Patterson Street
Greensboro, North Carolina 27407
SUBJECT: Compliance Evaluation inspection
Dow Corning
NPDES Permit NorNCS0�77,& NCOGS8773
Guilford County
Dear Ms. Beatty:
Dee Freeman
Secretary
A Compliance Evaluation Inspection was performed on the Dow Corning groundwater remediation system and stormwater
facilities on September 21, 2010 by Corey Basinger of the Winston-Salem Regional Office. You were present for the
inspection. The inspection consisted of two parts: an on -site inspection of the stormwater facilities and an in -office file
review. The following are the findings from the subject inspection.
I. Permit
The NPDES permit for groundwater remediation discharge (NCO088773) became effective on February 1, 2009 and
expires on June 30, 2011. The NPDES permit for stormwater discharge (NCS000077) became effective on April. 27, 2007
and expires on April 26, 2012.
Il, Records/Reports
A review of the Stormwater Pollution Prevention Plan (SPP Plan) revealed that all areas of concern had been addressed.
The SPP Plan was very comprehensive and well organized.
A review of the records associated with NCOOSS7733 revealed that the facility was in compliance with permit
requirements.
III. Facilitv Site Review
All outfalls noted in the SPP Plan were inspected and found to be satisfactory. The facility requested representative outfall
status for Outfall 002 in a letter dated March 29, 2007 and was approved on April 24, 2007. Since that time, the site has
been modified and the topography of the site has changed slightly. You indicated that facility staff was having a difficult
time collecting a stormwater sample at several of the outfalls due to the fact that very little stormwater was present in the
storm sewer pipes. It may be helpful to wait until later in the representative storm event to collect the sample in order to
allow the stormwater to enter the storm sewer system. If you continue to have difficulties with collecting a stormwater
sample, please contact this office and we will assist you in determining a viable solution.
The groundwater remediation system discharges across Patterson Street into an unnamed tributary to South Buffalo Creek.
Please remember to maintain access to the discharge point at all times.
1V. Effluent & Receiving Waters
Dow Comin; discharges treated groundwater and stormwater to an unnamed tributary to South Buffalo Creek in the Cape
Fear River Basin.
V. Self -Monitoring Program
All monitoring requirements required by NPDES Permit NCO088773 have been met.
Forth Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughlnwn St. Winston-Salem, North Carolina 27107
Phone: [phone]FAX [phone] Customer Service: 1-877-623-6748
Inlernet. www.ncwaterquali,y.org
Oltc
NorthCarohna
An Equal Employer

The qualitative monitoring required by NPDES Permit NCS000077 has been conducted. The facility has had difficulty
collecting analytical samples required by NPDES Permit NCS000077 due to insufficient stormwater in the storm sewer
collection system. Please refer to Section III above for further detail.
Overall, the facility was deemed to be in compliance with NCS000077 and NC0088773. The Division greatly appreciates
your continued efforts to maintain compliance with the subject permits and solicits any input you may have regarding this
inspection report. if you should have any questions or concerns regarding this report, please contact this Office at (336)
7 71-5 000.
Sincerely,
J
4���
Steve W. Tedder
Water Quality Supervisor
Cc: Central Files, WSRO

Form Approved
k
OMB No.2040-0057
a
Approval Expires
8-31-98
United States Environmental Protection Agency, Washington. D.C., 20460
Section A: National Data System Coding
Transaction Code NPDES No. Yr/Mo/Day Inspection Type Inspector FacilityType
N 5 NCS000077 10-09-21 C S 2
Facility Evaluation Rating BI QA ..........Reserved...........
4 N N
Section B: Facility Data
Name and Location of Facility Inspected:
Entry Time:
Permit Effective
1000 hrs.
Date: April 27, 2007
Dow Coming Facility — Greensboro
Located at 2900 Randolph Avenue, Greensboro, NC
Exit Time:
Permit Expiration
1 100 hrs.
I Date: Aril 26, 2012
Name(s) of On -Site Representative(s): Phone No(s):
Ms. Kelle Beatty 336-547-7126
Name, Address of Responsible Official:
Plant Manager
Phone No.
Contacted? N
Mr. David Clark
2914 Patterson Street
336-�47-7183
Greensboro, NC 27407
Section C: Areas Evaluated During Inspection (check only those areas evaluated)
X Permit NA Flow Measurement NA Operations/Maintenance NA Sewer Overflow
X Records/Reports X Self -Monitoring- Program NA Sludge Handling/Disposal NA Pollution Prevention
X Facility Site Review NA Compliance Schedules NA Pretreatment
NA Effluent/ReceMng Waters NA Laboratory X Stormwater
Section D: Summary of Findings/Comments
See attached letter for further details regarding the subject inspection.
Name(s) and Signature(s) of lnspectors:
Agency/Office/Teleplione:
Date:
DWQ / WSRO I [phone]
2-4- Sr�T I�
Signature of Rev' er:
Agency/Office:
Date:
DWQ I WSRO I [phone]
f -- .7—�s

Permit: NCS000077 Owner - Facility: Dow Corning Corporation
Inspection Date: 0912112010 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Stormwater Pollution Prevention Plan Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan? ■ n n i]
# Does the Plan include a General Location (USGS) map?
■
n
n
n
# Does the Plan include a `Narrative Description of Practices"?
■
❑
n
n
# Does the Plan include a detailed site map including outfall locations and drainage areas?
■
n
❑
❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
■
n
n
n
# Has the facility evaluated feasible alternatives to current practices?
■
n
❑
n
# Does the facility provide all necessary secondary containment?
■
❑
n
Cl
# Does the Plan include a BMP summary?
■
n
n
❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
■
❑
❑
❑
# Does the Plan include a Preventative Maintenance and Good Housekeeping Plan?
■
n
n
n
# Does the facility provide and document Employee Training?
■
n
n
n
# Does the Plan include a list of Responsible Party(s)?
■
n
❑
n
# Is the Plan reviewed and updated annually?
■
In
n
❑
# Does the Plan include a Stormwater Facility Inspection Program?
■
n
n
n
Has the Stormwater Pollution Prevention Plan been implemented?
■
n
n
n
Comment:
Qualitative Monitoring
Yes
No
NA
NE
Has the facility conducted its Qualitative Monitoring semi-annually?
■
n
❑
❑
Comment:
Analytical Monitoring
Yes
No
NA
NE
Has the facility conducted its Analytical monitoring?
■
❑
00
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas?
❑
❑
■
❑
Comment: Facility has recently completed a site modification project.
Once a storm event occurs the facility will be better able to determine how the site
changes have afftected the stormwater outfalls. At present, the facility staff are having a
difficult time obtaining a sample as very little water is flowing through the storm sewer
pipes.
Permit and Outfalls Yes No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? ■ n n n
# Were all outfalls observed during the inspection? ■ l-i n n
# If the facility has representative outfall status, is it properly documented by the Division? ■ ❑ 0 ❑
Page: 3

Permit: NCS000077 - Owner - Facility: Dow Corning Corporation
Inspection Date: M2112010 Inspection Type: Compliance Evaluation Reason for Visit: Routine
# Has the facility evaluated all illicit (non stormwater) discharges?
Comment:
Page: 4

Farm Approved
OMB No.2040-0057
°
FA
Approval Expires
8-31-98
United States Environmental Protection Agency, Washington, D.C.. 20460
Section A: National Data System Coding
Transaction Code NPDES No. Yr/Mo/Day Inspection Type Inspector FacilityType
N 5 NCO088773 10-09-21 C S 2
Facility Evaluation Rating BI QA ..........Reserved...........
4 N N
Section B: Facility Data
Name and Location of Facility Inspected:
Entry Time:
Permit Effective
1000 hrs.
Date: Feb 1, 2009
Dow Corning Facility - Greensboro
Located at 2914 Patterson Street, Greensboro, NC
Exit Time:
Permit Expiration
1100 hrs.
Date: June 30, 2011
Name(s) of On -Site Representative(s): Phone No(s):
Ms. Kelle Beatty 336-547-7126
Name, Address of Responsible Official-.
Plant Manager
Phone No.
Contacted? N
Mr. David Clark
2914 Patterson Street
336-547-7183
Greensboro, NC 27407
Section C: areas Evaluated During Inspection (check only those areas evaluated)
X Permit NA Flow Measurement NA Operations/Maintenance NA Sewer Overflow
X Records/Reports X Self -Monitoring Program NA Sludge Handling/Disposal NA Pollution Prevention
X Facility Site Review NA Compliance Schedules NA Pretreatment
NA Effluent/Receiving Waters NA Laboratory X Stormwater
Section D: Summary of Findings/Comments
See attached letter for further details regarding the subject inspection.
Nam�(s) aannd,Signature(s) of Inspectors:
Agency/Office/Telephone:
DWQ 1 WSRO I [phone]
Date:
z4 APT Zvfo
Signature of Review ..
Agencv/Office:
Date:
DWQ / WSRO / [phone]

Permit: NC0088773 Owner - Facility: Dow Corning Facility - Greensboro
Inspection Date: 09/2112010 inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, WRT, Settleable Solids, pH, DO, Sludge ❑ ❑ ■ ❑
Judge, and other that are applicable?
Comment:
Permit
Yes
no NA
n
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
■
❑ n
❑
Is the facility as described in the permit?
■
n ❑
n
# Are there any special conditions for the permit?
❑
❑ ■
❑
Is access to the plant site restricted to the general public?
■
❑ n
n
Is the inspector granted access to ail areas for inspection?
■
n n
n
Comment:
Record Keeping
Yes
No
NA
NE
Are records kept and maintained as required by the permit?
■
❑
❑
❑
Is all required information readily available, complete and current?
■
Cl
n
n
Are all records maintained for 3 years (lab. reg. required 5 years)?
®
n
❑
❑
Are analytical results consistent with data reported on DMRs?
®
n
n
❑
Is the chain -of -custody complete?
■
❑
❑
❑
Dates, times and location of sampling
Name of individual performing the sampling
■
Results of analysis and calibration
■
Dates of analysis
Name of person performing analyses
Transported COCs
Are DMRs complete: do they include all permit parameters?
®❑
❑
❑
Has the facility submitted its annual compliance report to users and DWQ?
❑
❑
■
❑
(if the facility is = or > 5 MGD permitted flow) Do they operate 2417 with a certified operator on each shift?
❑
❑
®
❑
Is the ORC visitation log available and current?
❑
❑
❑
Is the ORC certified at grade equal to or higher than the facility classification?
n
n
n
Is the backup operator certified at one grade less or greater than the facility classification?
❑
❑
❑
■
Is a copy of the current NPDES permit available on site?
■
n
n
n
Page # 3

Permit: NC0088773 Owner - Facility: Dow Corning Facility - Greensboro
Inspection Date: 09/21/2010 Inspection Type: Compliance Evaluation
Record Keeping Yes No NA NE
Facility has copy of previous years Annual Report on file for review? ❑ ❑ ■ ❑
Comment:
Effluent Pipe
Yes
No
NA NE
Is right of way to the outfall properly maintained?
❑
S
Q ❑
Are the receiving water free of foam other than trace amounts and other debris?
■
n
n ❑
If effluent (diffuser pipes are required) are they operating properly?
n
n
■ n
Comment: Access to outfall should be maintained all year round.
Flow Measurement- Effluent
Yes
No
NA NE
# Is flow meter used for reporting?
n
❑
❑ 0
Is flow meter calibrated annually?
❑
❑
❑ ■
Is the flow meter operational?
n
n
n ■
(If units are separated) Does the chart recorder match the flow meter?
❑
❑
❑ ■
Comment:
Effluent Sampling
Yes
No
NA NE
Is composite sampling flow proportional?
❑
❑
■ ❑
Is sample collected below all treatment units?
■
n
n ❑
Is proper volume collected?
■
n
❑ ❑
Is the tubing clean?
❑
❑
■ n
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)?
■
❑
Cl ❑
Is the facility sampling performed as required by the permit (frequency, sampling type representative)?
■
❑
❑ ❑
Comment:
Page # 4

Staff Review and Evaluation
NPDES Stormwater Permit
Contact Name: &j1hen Umrr
Facility Name: Dow Corning Corporation
hT ED S No.: NCS000077
Fad ity Location: 2914 Patterson Street, Greensboro, Guilford Co.
RECEIVED
N.C. Dept. of EHNR
APR 2 8 1994
Winston-S,alem
Regional Office;
Tyne of Activity and SIC Code fif applicable?: This plant formulates, manufactures,
and packages silicone I organic products; SIC 2899
Receiving Stream Name and Classificaljon: As an unnamed tributary to South
Buffalo Creek; class C NSW
Proposed permit Reouirements: (See attached draft permit)
ASS€GNED TO
Compliance Schedule: (See attached draft permit) D J E DATE
Basis for Monitoring KQuirements: No analytical monitoring required.
re
Response requested bv:
(with attachments)
Concurrence by Region
I I �• �
LWMM 11 ' 1
;,r.�jo vehicle maintenance performed on -site.
a - IS -
date
date)
149
s G-?¢
date
Tdatfl

i
O
CDE R
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, PE Dee Freeman
Governor Director Secretary
June S, 2012
Ms. Pamela Berry, Greensboro Site Manager
Dow Corning Corporation
2914 Patterson Street
Greensboro, NC 27407
Subject: General Stormwater Permit Inspection
Dow Corning Corporation
Stormwater Permit No. NCS000077
Guilford County
Dear Ms. Berry:
On June 6, 2012, Mike Mickey of this office met with Ronica Edgerton and Phil Rumley to perform
a NPDES Stormwater Permit Inspection at the Dow Corning operation located on Patterson Street in
Greensboro. The inspection found the facility to be compliant with the stormwater permit. This inspection
evaluated the five (5) areas as designated on the attached inspection form. Observations from each area
are addressed below:
1. Permit
Dow Corning holds NPDES Stormwater Permit No. NCS000077 for the discharge of stormwater from the
facility. The permit expired on April 26, 2012. Dow Corning has submitted the necessary renewal
application and the Division is currently processing the renewal request. A draft copy of the permit
should be forwarded to you sometime in the future.
2. Records/Reports
Part II, Section A of the permit requires the development of a Stormwater Pollution Prevention Plan
(SPPP). A copy of the SPPP was available for review during the inspection. This plan was found to be
thorough and complete. The plan was last updated on October 4, 2011 and documented all of the
components specified by the permit (training, spill plan, secondary containment, site map, etc.).
3. Facility Site Review
A tour of the property found the site to be clean and well managed. Observations did not reveal any
problems or concerns. The release valves for the secondary containment structures were properly locked.
The release of accumulated stormwater from the structures was properly documented and recorded per
Item 2(b) of Part II, Section A of the permit.
Previously, by letter dated May 2, 2007, the Division granted representative outfall status for outfall #2 to
be sampled as representative of outfall 41. It is our understanding that this representative outfall status is
no longer applicable due to construction changes at the facility and that sampling is now resumed for
outfall # 1.
North Carolina Division of Water Quality. Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 �rOn..itC
e� t , �+ 1
Phone: [phone] FAX: [phone]Customer Service: 1-877-623-6748 iV o l.arolina
Internet www.ncwaterquality.org Naturally
An Equal Opportunity 1 Affirmative Action Employer 63 LUL!

Ms. Pamela Berry
Page 2
June 8, 2012
4. Effluent/Receiving Waters
Stormwater from the site is currently monitored at six outfalls that discharge into an unnamed tributary to
South Buffalo Creek, class "WS-V; NSW" waters in the Cape Fear River Basin. Please note that per our
subsequent email conversations, outfall #2 cannot be eliminated since it does not actually combine with
outfall #3 until out in the street. It is our understanding that outfall #2 will be relocated closer to Patterson
Street to capture more stormwater drainage. This will require that the SPPP and site map be revised.
5. Monitoring Progranr
Part II, Section B of the permit requires the collection of semi-annual analytical samples of the stormwater
discharge during a representative storm event. A review of the facility files found analytical data for
sampling events that occurred on May 12, 2011 and September 21, 2011, The September sampling
revealed benchmark exceedences for TSS at outfalls 2, 5, and 6 and pH benchmark exceedences at outfalls
5 and 6. A resampling of outfalls 2, 5, and 6 on October 19, 2011 showed all parameters to be below the
benchmark values. The first semi-annual sample for 2012 was recently collected on May 30, 2012. This
data is not yet available from the laboratory. Please note that the results from analytical monitoring
should be reported to the Division of Water Quality within 30 days of receiving the results from your
certified laboratory.
Part II, Section C of the permit requires that qualitative (visual) monitoring be performed and documented
semi-annually at the same time that the analytical monitoring is performed. The file review showed that
this monitoring had been performed with the last two semi-annual events occurring on October 11, 2011,
and May 30, 2012. The qualitative records do not need to be submitted to the Division, however, the
records must be kept on file at the facility for a period of five years.
The analytical monitoring for on -site vehicle maintenance referenced in Part II, Section D of the permit is
not required since the facility uses less than 55 gallons of new motor oil when averaged over the calendar
year.
In summary, Dow Corning is in compliance with the stormwater permit. Please make sure that the
SPPP is updated to indicate the new location of outfall #2.
Should you have any questions concerning this letter, please contact Mike Mickey or me at (336)
771-5000_
Sincerely,
j6w
W. Corey Basinger
Water Quality Regional Supervisor
Surface Water Protection Section
cc: Peter Schneider (Water Quality Supervisor, City of Greensboro, Stormwater Management Division, P.O. Box 3136, Greensboro, NC 27406)
WBSCP Unit
Central Files — SWP
W SRO

I!
Form Approved
OMB No.2040-0057
Approval Expires
8-31-98
yAy
United States Environmental Protection Agency, Washington, D.C. 20460
Section A: National Data System Coding
Transaction Code NPDES No.
Yr/Mo/Day Inspection Type Inspector
FacilityType
N 5 NCS000077
12-06-06 C S
1
Facility Evaluation Rating
BI QA ..........Reserved...........
I
N N
Section B: Facility Data
Name and Location of Facility Inspected:
Entry Time:
Permit Effective
1030 hrs.
Date: April 27, 2007
Dow Corning Corporation
2914 Patterson Street
Greensboro, NC 27407
Exit Time:
1145 hrs.
Permit Expiration
Date: April 26, 2012
Name(s) of On -Site Representative(s):
Title(s): Phone No(s):
Ronica Edgerton
EHS&S Engineer [phone]
Phil Rumley
Name, Address of Responsible Official:
Title: Greensboro Site Manager
Phone No. [phone]
Contacted? No
Pamela Berry
Dow Corning Corporation
2914 Patterson Street
Greensboro, NC 27407
Section C: Areas Evaluated During Inspection (check only those areas evaluated)
® Permit NA
Flow Measurement NA Operations/Maintenance NA Sewer Overflow
® Records/Reports ®
Monitoring Program NA Sludge Handling/Disposal NA Pollution Prevention
® Facility Site Review NA
Compliance Schedules NA Pretreatment
® Effluent/Receiving Waters NA
Laboratory NA Stormwater
Section D: Summary of Findings/Comments
See the cover letter and attached inspection form for specific comments.
Name(s) and Signature(s) of Inspectors:
Agency/Office/Telephone:
Date:
L�
DWQ I WSRO I [phone]
r -I `)__
Signature of Reviewer:
Agency/Office:
Date:
j t
VV r��
DWQ / WSRO / [phone]
_ `
T� Z-o 2_�
EPA Form 35A0-3 (Rev 9-04)

Permit: NCS000077 Owner -Facility: Dow Corning Corporation
Inspection Date:. 06/06/2012 inspection Type: Compliance Evaluation Reason for Visit: Routine
Stormwater Pollution Prevention Plan Yes No NA NE
Does the site have a Stormwater Pollution Prevention Plan?
■
❑
❑ 0
# Does the Plan include a General Location (USGS) map?
■
❑
❑
❑
# Does the Plan include a "Narrative Description of Practices"?
■
❑
❑
❑
# Does the Plan include a detailed site map including outfall locations and drainage areas?
■
❑
Q
❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
■
❑
❑
❑
# Has the facility evaluated feasible alternatives to current practices?
■
❑
Cl
❑
# Does the facility provide all necessary secondary containment?
■
❑
❑
❑
# Does the Plan include a BMA summary?
■
❑
D
0
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
■
❑
❑
# Does the Plan include a Preventative Maintenance and Good Housekeeping Plan?
■
❑
❑
❑
# Does the facility provide and document Employee Training?
■
❑
❑
❑
# Does the Plan include a list of Responsible Party(s)?
■
Cl
❑
❑
# is the Plan reviewed and updated annually?
■
❑
❑
❑
# Does the Plan include a Stormwater Facility Inspection Program?
■
❑
❑
❑
Has the Stormwater Pollution Prevention Plan been implemented?
■
❑
❑
❑
Comment: Part II, Section A of the permit requires that Dow Corning develop and
implement a Stormwater Pollution Prevention Plan (SPPP). A copy of the plan was
available for review. The plan was thorough and complete and was last updated
October 4, 2011.
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi-annually? ■ ❑ ❑ ❑
Comment: Part II, Section C of the permit requires that qualitative (visual) monitoring
be conducted semi-annually at each outfall. The last two monitoring events occurred on
May 30, 2012 and October 11, 2011. These qualitative records do not need to be
submitted to the Division, but must be kept on file at the facility for a period of five years.
Analytical Monitoring Yes No NA NE
Has the facility conducted its Analytical monitoring? ■ ❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ ❑ ■ ❑
Page: 3

4.1
Permit: NCS000077 Owner - Facility: Dow Coming Corporation
Inspection Date: 06106/2012 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Comment: Part II, Section B of the permit requires the collection of semi-annual
analytical samples from each outfall. The last two monitoring events for which data was
available occurred on September 21, 2011 and May 12, 2011 (results from samples
collected 5-30-12 not back from the laboratory). Benchmark exceedences were noted
in the September sampling event for TSS at outfalls 2, 5 and 6 and for pH at outfalls 5
and 6. It is believed that the exceedences were due to construction activity occurring at
building 2. Follow-up samples collected 10-18-11 for outfalls 2, 5 and 6 showed all
values to be below benchmark levels. It was noted that no analytical data was available
for 2008-2010. The facility explained that this was due to difficulty in obtaining samples
during low flow conditions.
The on -site vehicle maintenance monitoring referenced in Part 11, Section D of the
permit is not applicable since Dow Corning uses less than 55 gallons of new motor oil
per month when averaged over the calendar year
Permit and Outfalls
Yes No
NA
NE
# Is a copy of the Permit and the Certificate of Coverage available at the site?
0
Q
❑
# Were all outfalls observed during the inspection?
■ Q
❑
# If the facility has representative outfall status, is it properly documented by the Division?
❑ 0
■
Q
# Has the facility evaluated all illicit (non stormwater) discharges?
■ 0
0
Q
Comment: Observations revealed that the Dow Corning site was clean and well
managed. The tanker loading/unloading areas, tote and drum storage areas and
containment dikes had locked valves to control stormwater releases. Records were
being kept to document the date, time and observations of the release.
During the inspection the location of outfall #2 was discussed. It is our understanding
that it will be relocated closer to the property boundary along Patterson Street. This will
require that the SPPP and site map be revised to note the new location.
Previously, by letter dated May 2, 2007 from the Division, Dow Corning was granted
representative outfall status to sample outfall #2 as representative of outfall #1. It is our
understanding that due to construction changes at the facility Dow is now performing
analytical sampling again at outfall #1 since the representative outfall status is no longer
applicable.
Page: 4

Compliance Inspection Report
Permit: NCS000077 Effective: 04/27/07 Expiration: 04/26/12 Owner : Dow Corning Corporation
SOC: Effective: Expiration: Facility: Dow Corning Corporation
County: Guilford 2914 Patterson St
Region: Winston-Salem
Greensboro NC 27407
Contact Person: Ronica Edgerton Title: Phone: [phone]
Directions to Facility:
System Classifications:
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 09111l2014 Entry Time: 08:30AM
Primary Inspector: Aana Taylor -Smith
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: Stormwater Discharge. Individual
Facility Status: Compliant Not Compliant
Question Areas:
0 Storm Water
(See attachment summary)
Certification:
Phone:
Exit Time: 09:OOAM
Phone: [phone]
Inspection Type: Compliance Evaluation
Page: 1

Permit: NCS000077 owner - Facility: Dow Corning Corpora lion
Inspection Date: 09/11/2014 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Site is in compliance. This inspection was conducted to assess any changes to the site that would impact the upcoming
permit renewal. See staff report for more information.
Page: 2

Stormwater Inspection Checklist
ape of Visit:XComplianceInspection/Program Audit ❑ Technical Assistance or Recon
)cation: _29l d PA -il-E1e6l -1 ST G 'syr¢o , A!G
Lciiity Name: Do%,%1 Cow-,,! 1 tit G COC#. Date: 2- 4 4Pa.ic.. Z4a}
.me in: ic>'•oo .Time Out . Name/T1t1e of contact(s)- V__g",_- Eles&--ffy
YES NO NA NE
I.
Is a copy of the Permit and the Certificate of Coverage available at the site?
$
❑
❑
0
2.
Does the Plan include a General Location (USGS) map?
❑
❑
0
3.
Does the Plan include a "Narrative Description of Practices"?
❑
❑
0
4.
Does the Plan include a detailed site map including outfall locations and drainage areas?
8r
❑
❑
0
5.
Does the Plan include a list of significant spills occurring during the past 3 years?
19
❑
❑
❑
6.
Has the facility evaluated all illicit (non stormwater) discharges?
5
0
❑
❑
7.
Has the facility evaluated feasible alternatives to current practices?
❑
❑
❑
S.
Does the facility provide all necessary secondary containment?
$
0
❑
❑
9.
Does the Plan include a BMP summary?.
V
❑
❑
❑
10.
Does the Plan include a Spill Prevention and Response Plan (SPRP)?
$
❑
0
0
11.
Does the -Plan include a Preventative Maintenance and Good Housekeeping Plan?
0
❑
❑
12.
Does the facility provide and document Employee Training?!
❑
0
0
13.
Does the Plan include a list of Responsible Party(s)?
❑
❑
❑
14.
Is the Plan reviewed and updated annually?
®
❑
❑
;0
15.
Does the Plan include a' Stormwater Facility Inspection Program?
®"
❑
0
0
16.
Has the Plan been implemented?
$'
❑
❑
❑
17.
Has the facility conducted its Qualitative Monitoring semi-annually?
❑
❑
❑
18,
Has the facility conducted its Quantitative (Analytical) monitoring?
1'
❑
❑
❑
19.
Has the facility conducted its Analytical monitoring at all outfalls receiving runoff
from Vehicle Maintenance areas (only for facilities using more than 55 gallons
of new motor oil per month)?
❑
❑
�'
0
20.
Were all outfalls observed during the inspection?
0
❑
❑
If the facility has representative outfall status, is it properly. documented by the Division?
�T,
❑
❑
❑
mments:
c��id � S74i r— t t r �i1
�Zor� ►t'1 �nrD ApP clpc� �� !Q�?t'iD�Rt- er-
va 646 z,
nspector Name: . Date:

Michael F. Easley, Governor
Wiliiam G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
February 27, 2007
Mr. Larry Tarvestad
Greensboro Site Manager
Dow Corning Corporation
2914 Patterson St
Greensboro, NC 27407
Subject: Draft Permit, NCS 000077
Dow Corning Corporation
Guilford County
Dear Mr. Tarvestad:
Winstoneglonal ofyQ
Alan W. Klimek, P.E., Director
Division of Water Quality
Rec&1,
N. Dept. of RNR
BAR 11 t 20d1
In response to your application received duly 9, 2004 1 have enclosed a 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:
• Benchmarks for analytical monitoring have been added to this draft permit.
• All analytical monitoring has been changed to semi-annual.
• The flow reporting requirement has been removed per DWQ revised strategy. The total rainfall and event
duration parameters have been retained.
• You are required to collect all of the analytical monitoring samples during representative storm events as
defined in this permit. Qualitative monitoring does not have to be performed during a representative
storm event.
Please submit any comments to this draft in writing no later than thirty (30) days following your receipt of this
letter. 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 be issued in approximately two months.
If you have any questions or comments concerning this draft permit, contact me at [phone] x 376 or
kelly.p Johnson&cmail.net.
Sin erely,
Kelly o nson
Environmental Engineer
enc: Draft Permit
cc: Winston Salem Regional Off ce, Corey Basinger_.
Central Files
Stormwater Permitting Unit File
NorthCaro] ma
. �aturatt j
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
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Permit No. NCS000077
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT NO. NCS000077
TO DISCHARGE STORMWATER UNDER THE
''NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina. General State 143-215.1, other lawful
standards and regulations promulgated and adopted by1�0e,North Carolina Environmental
Management Commission, and the Federal Water Polluti6nr-ontroI Act, as amended,
Dow Corning-C rporation
is hereby authorized to discharge rmWatdnfrom a facility located at
e
2914 Patterson Street
kcGrcensboro, NC
Guilford County
to receiving waters designated as an unnamed tributary of South Buffalo Creek, a class C, NSW
stream in the Cape Fear River Basin, in accordance with the discharge limitations, monitoring
requirements, and other conditions set forth in Parts I, II, III, IV, V and VI hereof.
This permit shall become effective Month Day, 2007.
This -permit and the authorization to discharge shall expire at midnight on Month Day, 2012.
Signed this day Month Day, 2007.
for Alan W. Klimek, P.E., Director
Division of Water Quality
By the Authority of the Environmental Management Commission

Permit No. NCS000077
PART I
Section A.
Section B:
Section C:
TABLE OF CONTENTS
INTRODUCTION
Individual Permit Coverage
Permitted Activities
Location I
PART II
MONITOWN
DISCHARGE
Section A:
Stormwati
Section B:
Analytical
Section C:
Qualitativ
Section D:
On -Site V
PART III
Section A:
PERMITTED
STANDARD CONDITIONS
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
i

Permit No. NCS000077
3. Signatory Requirements
4. Individual Permit Modification, Revocation and Reissuance, or
Termination
5. Permit Actions
Section C: Operation and Maintenance of Potlution 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 =?t
1. Representative Sampling`M
2. Recording Results
Y'
3. Flow Measurements W
4. Test Procedures
5. Representative Our fall ._
it
6. Record Retention
7. Inspection._and,Entry
Section E: Reporting Regments-
1. Discharge -Monitoring Reports
2. Submitting Reports
3. Availability of Reports
4. Non-Stormwater Discharges
5. Planned Changes
6. Anticipated Noncompliance
7. Bypass.
8. Twenty-four Hour Reporting
9. Other Noncompliance
10. Other Information
PART IV LIMITATIONS REOPENER
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI DEFINITIONS
ii

Permit No. NCS000077
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.
SECTION B: PERMITTED ACTIVITIES
Until this permit expires or is modified or revoked, the per nittee'is authorized to discharge
. r
stormwater to the surface waters of North Carolina onseparate storm sewer system which has
been adequately treated and managed in accordance with the terms=and conditions of this
individual permit. All discharges shall be in accordance With the conditions of this permit.
Any other point source discharge to surface watersofthe state is prohibited unless it is an
allowable non-stormwater discharge or is covered by,another permit, authorization or approval.
If The discharges allowed by this individual permit,shall no cause or contribute to violations of
Water Quality Standards.
' V ? -C
This permit does not relieve the peiuttee'from responsibility for compliance with any other
applicable federal, state, or.local�la jAi, , standard, ordinance, order, judgment, or decree.
Part I Page 1 of 2

SECTION C: LOCATION MAP Permit No. NCS000077
�y_� F
I°�in {��'�t�► la's � �� �1iS4ii+lfF t"�yC!_ 5
I� _S "` .s it ,'��� € y5 - 1 i T�..PAYt�tZ ice• 9 _ .:
Dow Corning
Corporation
-06
.
.atitude: 36'03'27" N
.ongitude: 79'50'43" W NCS000077 Facility .
.ounty: Guilford Dow Corning Location
tream Class: C, NSW Corporation
receiving Stream: UT to Buffalo Creep L
ab-basin: 03-06-02 (Cape Fear River Basin) �Yott/1. TCAU 1:24,000
Part I Page 2 of 2

Permit No. NCS000077
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 Ill, Standard
Conditions, Section E, Paragraph 3 of this individual permit. The Plan shall include, at a
minimum, the following items:
1. Site Plan. The site plan shall provide a description of the physical facility and the
potential pollutant sources which may be expected to con tribute to contamination of
stormwater discharges. The site plan shall contain t��h`e follow, iinng:
a. A general location map�SGS quadrang�.ma or appropriately drafted
equivalent map), showing the facility_'s location in relation to transportation
routes and surface waters, the nAe ec ving water(s) to which the
stormwater outfall(s) discharges, gpk the discharge is to a municipal separate
storm sewer system, the nameof the municipality and the ultimate receiving
waters; and accurate latitude and!iongitude of the point(s) of discharge.
b. A narrative descriptiozlof storage practices, loading and unloading activities,
outdoor processareas, do particulate generating or control processes, and
waste disposal,practices
C. A site map
drawn.to19cale with the following items:
Dista
(1)
Iegend and north arrow
(2)
Location of industrial activities (including storage of materials,'
disposal areas, process areas and loading and unloading areas)
(3)
Drainage structures
(4)
Delineated drainage areas for each outfall
(5)
Drainage area for each outfall in acres and percentage of
each drainage area that is impervious
(6)
Building locations
(7)
Existing BMPs and impervious surfaces
(8)
For each outfall, a narrative description of the potential pollutants that
could be expected to be present in the stormwater discharge.
d. A list of significant spills or leaks of pollutants that have occurred at the facility
during the 3 previous years and any corrective actions taken to mitigatc 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
B, Paragraph 3.
Part It Page 1 of 8

Permit No. NCS000077
2. Storrnwater 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 stormwatcr. 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 j fo potential contamination.
b. Secondary Containment Schedule. A
for bulls storage of liquid materials, st
Superfund Amendments and
chemicals, or storage of hazy
contaminating stormwater ru
connected directly to stormy~
controlled by manually
secured with a locking
containment area shady,
staining, visible sheens
stormwater. A.cdUrnul,
uncontaminated by the
accumulated gfdrrriv
period of five years.
ule to Provide secondary containment
of Section 313 of Title III of the
ationnAct (SARA) water priority
anceseto prevent leaks and spills from
s condary containment devices are
,ance systems, the connection shall be
or other similar devices [which shall be
e61ianismyand any stormwater that accumulates in the
at=a ininimum visually observed for color, foam, outfall
nd dry weather flow, prior to release of the accumulated
s ormwater shall be released if found to be
aterial stored within the containment area. Records
ial making the observation, the description of the
and the date and time of the release shall be kept for a
C. BMP Summary. A narrative description shall be provided of Best Management
Practices (BMPs) to be considered such as, but not limited to, oil and grease
separation, debris control, vegetative filter strips, infiltration and stormwater
detention or retention, where necessary. The need for structural BMPs shall be
based on the assessment of potential of sources to contribute significant quantities
of pollutants to stormwater discharges and data collected through monitoring of
stormwater discharges.
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 team) responsible for implementing the
SPRP shall be identified. A responsible person shall be on -site at all tunes 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, a SPCC plan 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.
Part II Page 2 of 8

Permit No. NCS000077
4.. ,Preventative Maintenance and Good Housekeeping Program. A preventative
maintenance program shall be developed. The program shall document schedules of
inspections and maintenance activities of stormwater control systems, plant equipment
and systems. Inspection of material handling areas and regular cleaning schedules of
these areas shall be incorporated into the program.
5. Employee Training. Training schedules shall be developed and training provided at a
minimum on an annual basis on proper spill response and cleanup procedures and
preventative maintenance activities for all personnel involved in 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.
6. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a specific
position(s) responsible for the overall coordinat o fn,4 e e` pment, implementation, and
revision to the PIan. Responsibilities for all components of the Plan shall be documented
and position assignments provided. \�
7. Plan Amendment. The permittee shall amen'&theTlan whenever there is a change in
ii /r >
design, construction, operation; or maintenance which has a significant effect on the
potential for the discharge of pollutat t to�surface waters. The Stormwater Pollution
Prevention Plan shall be;reviewed and updated on an annual basis.
Y-ar '��11
The Director may notify the-pe\rmi,�t�ee when the Plan does not meet one or more of the
minimum requirements off the permit. Within 30 days of such notice, the permittee shall
submit a time schedule to the Director for modifying the PIan to meet minimum
f
requirements. The pej. i e�'shall provide certification in writing (in accordance with
Part III, Standard Condiiions, Section B, Paragraph 3) to the Director that the changes
have been made.
8. Facility Inspection Program. Facilities are required to inspect all stormwater systems on
at least a semiannual schedule, once in the fall (September -November) and once in the
spring (April - June). The inspection and any subsequent maintenance activities
performed shall be documented, recording date and time of inspection, individual(s)
making the inspection and a narrative description of the facility's stormwater control
systems, plant equipment and systems. Records of these inspections shall be incorporated
into the Stormwater Pollution Prevention Plan.
Stormwater discharge characteristic monitoring as required in Part II of this permit shall
be performed in addition to facility inspections.
9. Implementation. The permittee shall document all monitoring, measurements,
inspections and maintenance activities and training provided to employees, including the
log of the sampling data and of activities 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 his
authorized representative immediately upon request.
Part H Page 3 of 8

Permit No. NCS000077
SECTION B: ANALYTICAL MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge stormwater subject to the provisions of this permit.
Analytical monitoring of stormwater discharges shall be performed as specified below in Table
1.
All analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of ten analytical samplings being conducted over the term of
the permit at each stormwater discharge outfall (SDO). The permittec shall complete the
minimum ten analytical samplings in accordance with the schedule specified below in Table 2.
Monitoring results shall be compared to the benchmark
values in Table 3 are not permit limits but should be u�
Stormwater Pollution Prevention Plan (SPPP).. The per
benchmark exceedances and evaluate the effectiveness,
review and/or update the SPPP and document any effolr
Table I. Analytical Monitoring Re u
iri'Table 3. The benchmark
rT
udelines for the permittee's
shdll'evaluate the sources of any
site BMPs. The permittee shall
(dress stormwater contamination.
Discharge -
5
Measurement Frequency),
Sample,
Sample
12 x, ."' ,, _Characteristics _ . . , _ .
. ,Units _
y
T e2
:.Lacaton3=
Total Suspended Solids
Semi-annually
Grab
SDO
Oil and Grease /
m h, 'j
Semi-annually
Grab
SDO
H
standard
Semi-annually
Grab
SDO
Total Nitrogen (TN:_
mglL
Semi-annually
Grab
SDO
Total Phosphorus TP)
mg/L
Semi-annually
Grab
SDO
Turbidity
NTU
Semi-annually
Grab
SDO
Total Rainfall
inches
Semi -Annually-
-
Rainfall Event Duration
I minutes
I Semi -Annually
-
-
Footnotes:
I Measurement Frequency: All analytical monitoring will be performed twice per year, once in the spring (April -
June) and once in the fall (September - November). See Table 2 for schedule of monitoring periods.
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. If the detention pond discharges only in response
to a storm event exceeding a ten year design storm, then no analytical monitoring is required and only qualitative,
monitoring shall be performed.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless representative
outfall status has been granted.
Part II Page 4 of 8

Permit No. NCS000077
Table 2.' Monitoring Schedule
Monitoring period
Sample:Number. t
; . ,_ =Star
---.,En
Year I — Spring
1
April 1, 2007
June 30, 2007
Year I — Fall
2
September 1, 2007
November 30, 2007
Year 2 — Spring
3
April 1, 2008
June 30, 2008
Year 2 — Fall
4
September 1, 2008
November 30, 2008
Year 3 — Spring
5
April 1, 2009y
June 30, 2009
Year 3 — Fall
6
Septenji er 1;.2009
November 30, 2009
Year 4 — Spring
7
April I_,�,2010
June 30, 2010
Year 4 —Fall
8
Septemberj, 2010
November 30, 2010
Year 5 — Spring
9
_April 1;\201.1
June 30, 2011
Year 5 -Fall
10
jSepteniber;l; 2011
November 30, 2011
Footnote
I Maintain semi-annual monitoring during
pepermit, !llrenew I LIprocess.
Table 3. Benchmark Value'sfof AnaW ical Monitoring -
'Discharge Ctiaracter�st�cs;
M,=> Uric#s` _`' r
t +Benchmark
Total Suspended Solids T
A/L
100
Oil and Grease
m
30
pH
standard
6-9
Total Nitrogen (TN)
mg/L
30
Total Phosphorus (TP)
mg/L
2
Turbidity
NTU
50
This site discharges to impaired waters experiencing problems with impaired biological integrity
and turbidity. If a Total Maximum Daily Load (TMDL) is approved for this segment of South
Buffalo 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 II Page 5 of 8

Permit No. NCS000077
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 below in Table 4. Qualitative
monitoring is for the purpose of evaluating the effectiveness of the Stormwater Pollution
Prevention Plan (SPPP) and assessing new sources of stormwater pollution. No analytical tests
are required. Qualitative monitoring of stormwater outfalls is performed when stormwater
discharge occurs but does not need to be performed during a representative storm event.
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 Stormwater Pollution Prevention
Plan.
;. �
All qualitative monitoring will be performed twice p4iyear,'onc"&,1n-the spring (April - June) and
once in the fall (September - November).
Table 4. Qualitative M_onitoring;Requirements
Discharge Gharacter�stics
Frequency
'M0111tortn9
A i
I;ocation
Color
Semi -Annual
SDO
Odor `°`>. t•,
Semi -Annual
SDO
Clarity
Semi -Annual
SDO
Floating Solids
Semi -Annual
SDO
F-�
Sus ended Solids
Semi -Annual
SDO
Foam
Semi -Annual
SDO
Oil Sheen
Semi -Annual
SDO
Other obvious indicators
Semi -Annual
SDO
of stormwater pollution
Footnotes:
1 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
outfalls which discharge stormwater runoff from vehicle maintenance areas.
All analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of ten analytical samplings being conducted over the term of
the permit at each stormwater discharge outfall (SDO) which discharges stormwater runoff from
Part 11 Page 6 of 8

Permit No. NCS000077
vehicle maintenance areas. The permittee shall complete the minimum ten analytical samplings
in accordance with the schedule specified in Table 2 (Section B).
Monitoring results shall be compared to the benchmark values in Table 6. The benchmark
values in Table 6 are not permit Iimits but should be used as guidelines for the permittee's
Stormwater Pollution Prevention Plan (SPPP). The permittee shall evaluate the sources of any
benchmark exceedances and evaluate the effectiveness of any site BMPs.. The permittee shall
review and/or update the SPPP and document any efforts to address stormwater contamination.
Table 5. Analtical Monitoring- Requirements for On -Site Vehicle Maintenance
Discharge Characteristics
-- .
Units
- -
Measurement
='Fie uenc �I
Sample
- .T e2
Sampxle ;.
Loca600
H
standard
Semi-annually!"
Grab
SDO
Oil and Grease
mg/1
Semtrannually`.
Grab
SDO
Total suspended Solids
mg/1
Semi- n wally
Grab
SDO
New Motor Oil Usagegallons/month
Semi-annually
Estimate
-
Total Rainfall
inches
�Semi annually
Rainfall Event Duration
I minutes /�/r
iSemir annually
_
Footnotes:"
I Measurement Frequency: All analytical noniitoring will be performed twice per year, once in the spring (April -
June) and once in the fall (September Noiember)}See Table 2 (Section B) for schedule of monitoring periods.
2 If the stormwater runoff is controlled by asormwater detention pond, a grab sample of the discharge from the
pond shall be collected within tfirst 30 minutes of discharge. If the detention pond discharges only in response
to a storm event exceeding a ten,y a ddesign storm, then no analytical monitoring is required and only qualitative
monitoring shall be performed.
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.
Table 6. Benchmark Values for Vehicle Maintenance Analytical Mom
t'' D schai'ge.Cfiaractei•�stics` Units ,` ; x !V w, Benchrr►ark
Total Suspended Solids mg/L 100
Oil and Grease mg/L 30
PH standard 6-9
toring
PartI I Page 7 of S

Permit No. NCSOOOXXX
PART III STANDARD CONDITIONS FOR NPDES STORM WATER 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: 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 specified in Part 11, Section A, Paragraph 2(b) of this permit, shall be accomplished within
12 months of the effective date of the initial permit issuance.
Proposed Facilities: 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) ofthis'permit shall
be accomplished prior to the beginning of discharges from the operation of the industrial activity.
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 reissuance, or modification; or denial of a permit upon renewal application.
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 $27,500 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 $ I I,000 per violation with the maximum
amount not to exceed $137,500. [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 twenty-five thousand dollars ($25,000) 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. North Carolina 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 $1 1,000 per violation, with the maximum amount of any Class I
penalty assessed not to exceed $27,500. Penalties for Class II violations are not to exceed $11,000
per day for each day during which the violation continues, with the maximum amount of any Class
I1 penalty not to exceed $137,500,
Part III Page 1 of 8 Pages

Permit No. NCSOOOXXX
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 Liability
Except as provided in Part III, 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 maybe
temporarily suspended.
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, liabilities, 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.
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.
10. Penalties for Falsification of Report
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
Part III Page 2 of 8 Pages

Permit No. NCSOOOXXX
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. In order to receive automatic
authorization to discharge beyond the expiration date, the pennittee shall submit forms and fees as are
required by the agency authorized to issue permits no later than 180 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 § t43-2153.E 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 may be necessary under the Clean Water Act. Permittee is required
to notify the Division in writing in the event the permitted facility is sold or closed.
3. Signatory Requirements
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) For a corporation: by a responsible corporate officer. For the purpose of this Section, a
responsible corporate officer means: (a) a president, secretary, treasurer or vice president
of the corporation in charge of a principal business function, or any other person who
performs similar policy or decision making functions for the corporation, or (b) the
manager of one or more manufacturing production or operating facilities employing more
than 250 persons or having gross annual sales or expenditures exceeding 25 million (in
second quarter 1980 dollars), if authority to sign documents has been assigned or
delegated to the manager in accordance with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor,
respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a principal executive
officer or ranking elected official.
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
responsibility, or an individual or position having overall responsibility for environmental
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Permit No. NCSOOOXXX
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.
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, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations."
Individual Permit Modification, Revocation and Reissuance, 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 in Title 40, Code of Federal Regulations, Parts 122
and 123; Title 15A of the North Carolina Administrative Code, Subchapter 2H .0100; and North Carolina
General Statute.143-215.1 et. al.
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.
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.
2. 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 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
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
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Permit No. NCSOOOXXX
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
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 without notification to and approval of
the Director.
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:
a. The date, exact place, and time of sampling, measurements, inspection or maintenance activity;
b. The individual(s) who performed the sampling, measurements, inspection or maintenance activity;
The date(s) analyses were performed;
d. The individual(s) who performed the analyses;
e. The analytical techniques or methods used; and
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.
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.
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Permit No. NCSOOOXXX
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.
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.
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 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 permittee'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;
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
1. 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 received by the Division
no later than 30 days from the date the facility receives the sampling results from the laboratory.
2. Submitting Reports
Duplicate signed copies of all reports required herein, shall be submitted to the following address:
Division of Water Quality
Water Quality Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
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Permit No. NCSOOOXXX
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 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 Discharizes
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.
5. 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.
7. 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
unanticipated bypass.
8. 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.
The Director may waive the written report on a case -by -case basis if the oral report has been received
within 24 hours.
9. Other Noncompliance
The permittee shall report all instances of noncompliance not reported under 24 hour reporting at the time
monitoring reports are submitted.
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Permit No. NCSOOOXXX
10. Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in an application for an
individual permit or in any report to the Director, it shall promptly submit such facts or information.
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Permit No. NCSOOOXXX
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
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
The permittee must pay the administering and compliance monitoring 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.
PART VI - DEFINITIONS
Act
See Clean Water Act.
Arithmetic Mean
The arithmetic mean of any set of values is the summation of the individual values divided by the number of
individual values,
3. . Allowable Nan-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 (13MPs}
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.
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Permit No. NCSOOOXXX
5. 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.
6.. 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.
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
The Director of the Division of Water Quality, the permit issuing authority.
to. EMC
The North Carolina Environmental Management Commission.
11. Grab Sample
An individual sample collected instantaneously. Grab samples that will be directly analyzed or qualitatively
monitored must be taken within the first 30 minutes of discharge.
12. Hazardous Substance
Any substance designated under 40 CFR Part 116 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
tem
A stormwater collection system within an incorporated area of local self-government such as a city or town.
15. Overburden
Any material of any nature, consolidated or unconsolidated, that overlies a mineral deposit, excluding
topsoil or similar naturally -occurring surface materials that are not disturbed by mining operations.
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Permit No. NCSOOOXXX
16. Permittee
The owner or operator issued a permit pursuant to this individual permit.
17. 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.
18. Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall and that is preceded by at least 72 hours in which no
storm event measuring greater than 0.1 inches has occurred. A single storm event may contain up to 10 consecutive
hours of no precipitation. For example, if it rains for 2 hours without producing any collectable discharge, and then
stops, a sample may be collected if a rain producing a discharge begins again within the next 10 hours.
19. 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.
20. Rinse Water Discharge
The discharge of rinse water from equipment cleaning areas associated with industrial activity. Rinse
waters from vehicle and equipment cleaning areas are process wastewaters and do not include washwaters
utilizing any type of detergent or cleaning agent.
21. Secondary Containment
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 Priori 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;
b. Is present at or above threshold levels at a facility subject to SARA title III, Section 313 reporting
requirements; and
C. That meet at least one of the following criteria-
(1) Is listed in Appendix D of 40 CFR part 122 on either Table lI (organic priority
pollutants), 'fable 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.
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Permit No. NCSOOOXXX
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 111 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 302.4).
26. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately following rainfall or as a
result of snowmelt.
27. Stormwater Associated with Industrial Activity
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.
28. 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.
29. Ten Year Design Storm
The maximum 24 hour precipitation event expected to be equaled or exceeded on the average once in ten
years. Design storm information can be found in the State of North Carolina Erosion and Sediment Control
Planning and Design Manual.
30. Total Flow
The flow corresponding to the time period over which the entire storm event occurs. Total flow shall be
either; (a) measured continuously, (b) calculated based on the amount of area draining to the outfall, the
amount of built -upon (impervious) area, and the total amount of rainfall, or (c) estimated by the
measurement of flow at 20 minute intervals during the rainfall event.
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Permit No. NCSOOOXXX
31. Total Maximum Daily Load (TMDL)
A TMDL is a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet
water quality standards, and an allocation of that amount to the pollutant's sources. A TMDL is a detailed
water quality assessment that provides the scientific foundation for an implementation plan. The
implementation plan outlines the steps necessary to reduce pollutant loads in a certain body of water to
restore and maintain water quality standards in all seasons. The Clean Water Act, section 303, establishes
the water quality standards and TMDL programs.
32. Toxic Pollutant
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.
33. Upset
Means an exceptional incident in which there is unintentional and temporary noncompliance with
technology based permit effluent limitations because of factors beyond the reasonable control of the
permittee. An upset does not include noncompliance to the extent caused by operational error, improperly
designed treatment or control facilities, inadequate treatment or control facilities, lack of preventive
maintenance, or careless or improper operation.
34. Vehicle Maintenance Activi
t
Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication, vehicle cleaning operations, or
airport deicing operations.
35. 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.
36. 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.
Part VI Page 5 of 5 Pages