NCG030034_COMPLETE FILE - HISTORICAL_20170815

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO.
IV 0034
DOC TYPE
HISTORICAL FILE
❑ MONITORING REPORTS
DOC DATE
❑J 1�
YYYYM MDD

Energy, Mineral &
Land Resources
ENVERONM E NTAL OU A LiTY
Lee Hancock
Isometrics, Inc.
1266 N Scales Street
Reidsville, NC 27320
Subject: Compliance Inspection
Permit No. NCG 030034
August 15, 2017
Isometrics, Inc. — Plant 2 (Hwy 87 N)
Rockingham County
Dear Mr. Hancock:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
TRACY DAVIS
Director
On August 15, 2017 Glen White of the North Carolina Department of Environmental Quality —
Department of Energy, Minerals & Land Resources met with you and James Frei (Consulting
Environmental Engineer) of SwSG, LLC at the subject facility, located at 7537 Hwy 87 North,
Reidsville, to conduct a compliance inspection for the facilities Industrial Stormwater Permit.
Your assistance with inspection was greatly appreciated.
Permit:
This facility holds General Stormwater Permit NCG030034 to discharge stormwater from
industrial activity classified as Heat Treating of Metal (SIC 3398), Fabricating of Metal
Products (SIC 3398), Manufacturing of Measuring and Analyzing Instruments (SIC 38)
under the National Pollutant Discharge Elimination System (NPDES). The permit became
effective November 1, 2012 and expires on October 31, 2017. If a permit revision is not issued
prior to the expiration date, the facility will continue to operate 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. A copy of the current 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. Inspector reviewed the SPPP and
each of its components. The SPPP has been updated annually as required. A training workshop
that includes emergency response training is conducted annually by Mr. Frei. All employees
sign off on training log with pen and ink signatures. Monitoring is conducted according to the
permit. No deficiencies noted.
state a'North Carolina I EnAro mental Qualfty Energy. Mineral and Land Resources
Winston-Salern Regional Office 1 450 Hanes Mill[. Sulu 300 1 Wlnston-Salem. Nt_ 27103
336 776 9,300

Facili Site Review:
This facility manufactures tank trucks and specialty trucks for a range of uses that vary from
carrying drinking water to hauling various types of fuels including jet fuel. The facility has both
private and government contract clients with.large multi -year contracts for military equipment.
Vehicles and tanks are built to customer specifications and tested using the government and
customer required methods.
Renovation and expansion that was underway at this facility, during the 2015 inspection, appear
to be complete. The facility has also added a covered area for metal stock. Rust Proofing and
Sand Blasting are performed in metal building located away from the main plant. The storage
yards are nearing full capacity with completed equipment waiting to be picked up by transport
contracted by the customer. Site appears to be well maintained and everything is stored neatly.
Production areas are all under roof.
Effluent Rec_eivin_1 Waters:
Effluent from this facility drains to from an unnamed tributary to Wolfe Island Creek, a part of
the Roanoke River Basin.
Self -Monitoring Program -
Part II, Sections B & D of the permit require this facility to perform qualitative and analytical
monitoring on a semi-annual basis unless a Tiered Response is triggered. The last monitoring
samples were taken on August 10, 2017.
This facility appears to be well maintained. The production area expansion appears to be
complete. New covered production areas are complete and there is a new covered area for metal
stock. All raw materials to be neatly stored in their respective place.
The SPPP and siteplan will need to be revised to include all site renovations, additions, and
current records once the revised/new general permit has been issued. If you have further
questions or require assistance, please contact Glen White of NCDEQ at 336-776-9660.
Sincerely,
Matthew E. Gantt, P.E.
Regional Engineer
Land Quality Section
Winston-Salem Regional Office
Enclosures:
Inspection Report
cc: DEMLR (WSRO)
State of North Carolina I Environmental Qualtty I Energy, Mineral and Land Resources
Winston-Salem Regional Office 1 450 Hanes Miil (toad, Suite 300 I Winston-Salem. NC 27103
330 776 9800

u
Permit: NCG030034
SOC:
County: Rockingham
Region: Winston-Salem
Contact Person: Lee Hancock
Directions to Facility:
System Classifications:
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Compliance Inspection Report
Effective: 11/01/12 Expiration: 10/31/17 Owner : Isometrics Inc
Effective: Expiration: Facility: Isometrics Incorporated -Plant 2
7537 Hwy 87 N
Inspection Date: 08/15/2017
Primary Inspector: Glen White
Secondary Inspector(s):
Reidsville NC 27320
Title: Phone: [phone]
Certification: Phone:
Entry Time: 11:30AM Exit Time: 01:001'M
Phone: [phone]
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Metal Fabrication Stormwater Discharge COC
Facility Status: ® Compliant Not Compliant
Question Areas:
® Storm Water
(See attachment summary)
Page:

penult: NCGO30034 owner - Facility: Isometrics Inc
Inspection Date: 08/15/2017 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
This site was undergoing expansion at the time of the 2015 inspection and has grown since that inspection. This plant has
installed a covered area for metal stock and has completed a production building that was under construction at the last
visit. Rust Proofing and Sandblasting are both done under roof in adjacent metal building away from the main plant itself.
Isometrics currently has significant contracts with the Federal Govern ment/Military that will span for several years. All
storage areas of the yard are now filled to capacity with completed equipment that will begin shipping shortly.
Page: 2

Permit: NCGO30034 Owner- Facility: Isometrics Inc
Inspection Date: 08/15/2017 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?
®❑ ❑ ❑
# 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?
®❑ ❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
®❑ ❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
®❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
®❑ ❑ ❑
# Does the Plan include a BMP summary?
®❑ ❑ ❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
M ❑ ❑ ❑
# Does the Plan include a Preventative Maintenance and Good Housekeeping Plan?
® ❑ ❑ ❑
# Does the facility provide and document Employee Training?
® ❑ ❑ ❑
# Ddes 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?
® ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented?
® ❑ ❑ ❑
Comment: SPPP will need to be undated to include all additions/renovations at the facility and anv chanaes
that the new permit may provide. Ensure that „operations changes, responsible party/personnel
changes are updated in the new permit. Training must be documented every 12 months.
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi-annually? ®❑ ❑ ❑
Comment: current
Analytical Monitoring
Yes No NA NE
Has the facility conducted its Analytical monitoring? ®❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ® ❑ ❑ ❑
Comment: Monitoring conducted as required.
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? ® ❑ ❑ ❑
# If the facility has representative outfall status, is it properly documented by the Division? ❑l ®❑ ❑
# Has the facility evaluated all illicit (non stormwater) discharges? ® ❑ ❑ ❑
Comment: Facility will see if it can get R.O.S after a couple of monitoring events.
Page: 3

North Carolina Department of Environmental Quality
Pat McCrory
Governor
November 09, 2015
Lee Hancock
Isometrics Inc.
7537 Hwy 87 N
Reidsville, NC 27320
Subject: Compliance Evaluation Inspection
NPDES General Stormwater Permit NCG030000
Certificate of Coverage NCG030034
Isometrics, Inc. — Plant 2 .
Rockingham County
Dear Mr. Hancock
Donald R. van derVaar
Secretary
Glen White of the Winston-Salem Regional Office of the NC Division of Energy, Mineral, and Land Resources
(DEMLR) conducted a compliance evaluation inspection at the subject facility on November 04, 2015. Mr.
James Frei of SwSG, LLC ad Mr. Mike Leffew of Isometrics Engineering, assisted the inspector with review of
the SP3 (Stormwater Pollution Prevention Plan) documents and with site review. The facility was found to
be compliant with its stormwater permit requirements. An inspection report is attached for your records
and the inspection findings are summarized below.
1. Permit
This facility holds General Stormwater Permit No. NCG030034 to discharge Stormwater from activities
associated with Heat Treating of Metal Products and Metal Fabrication under the National Pollutant Discharge
Elimination System (NPDES). The permit became effective November 1, 2012 and expires October 31, 2017.
Your permit renewal package must be received in the Central Office in Raleigh no later than 180 days prior -to
the expiration date of the permit.
2. Records/Reports
am'
Part I1, Section A of tl6e permit requireYs the development of a Stormwater Pollution Prevention Plan (SPPP).
The plan must include all 9 sections of Part II, Section A requirements of the permit. This site is required to
complete analytical and qualitative monitoring twice yearly as defined in Part II, Section C of the permit. The
plan must be updated annually.
Division of Energy, Minerai, and Land Resources
Energy Section • Geological Survey Section • Land Quality Section
1612 Mail Service Center, Raleigh, north Carolina 27699-1612 • 919-707-9200 / FAX; 919-715-8801
512 North Salisbury Street, Raleigh, North Carolina 27604 • Internet: tq2!/portal; ncdenr.ore/web/Ir/
An Equal Opportunity \ Affirmative Action Employer — 50% Recycled \ 10% Post Consumer Paper

3. Facility Site Review
This facility manufactures tank trucks and specialty trucks for a range of uses from carrying drinking water to
hauling various types of fuels including jet fuel and has both private and government contracts and clients.
Vehicles and tanks are built to customer specifications and tested using the government and customer
required methods.
This plant is currently undergoing upgrades and expansion. There have been building additions and changes
to the location of storm outfalls. More additions are scheduled to begin soon. Much of the raw steel
material is stored in the yard now and is exposed to the elements. New covered areas are to be constructed
and raw materials will be stored under cover.
The SP3 and siteplan for this site will need to be revised to show new facilities, storage and outfall locations.
4. Effluent/Receiving Waters
Stormwater from this facility drains from an unnamed tributary to Wolfe Island Creek, a part of the Roanoke
River Basin.
S. Self -Monitoring Program
Analytical Monitoring: This site is required to provide analytical monitoring under current conditions of the
permit. Monitoring has been performed twice annually as required. Mr. Frei, SwSG, LLC, maintains the SP3
plan and conducts the required monitoring.
Overall, the condition if the site is well maintained. The SP3 plan and monitoring records are currently
compliant but need to be updated soon to include facility expansion and new outfall locations. If you have
any questions concerning this letter or the attached inspection report, please contact Glen White at (336)
776-9660.
Sincerely,
Matthew �EOan�ttr.E.��
Regional Engineer
Land Quality Section
Attachments:
1, BIMS Inspection Checklist
CC: Division of Land Quality — WSRO

Permit: NCG030034
SOC:
county: Rockingham
Region: Winston-Salem
Contact Person: Lee Hancock
Directions to Facility:
System Classifications:
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Compliance Inspection Repo
Effective: 11/01/12 Expiration: 10/31/17 Owner: Isometrics Inc
Effective: Expiration: Facility: Isometrics Incorporated -Plant 2
7537 Hwy 87 N
Inspection Date: 11/04/2015
Primary Inspector: Glen White
Secondary Inspector(s):
Reidsville NC 27320
Title: Phone: [phone]
Certification: Phone:
EntryTime: 09:00AM Exit.Time: 10:30AM
Phone: [phone]
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Metal Fabrication Stormwater Discharge COC
Facility Status: ® Compliant ❑ Not Compliant
Question Areas:
® Storm Water
(See attachment summary)
Page: 1

Permit: NCG030034 Owner • Facility: Isometrics Inc
Inspection Date; 11104=15 Inspection Type; Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Mr. Leffew and Mr. Frei reviewed the 5P3 documents and monitoring records'with the inspector and then walked the site to
review it's general condition and location of the outfalls. This site has gone through significant expansion and renovation in
the past few months and is it is ongoing. Tanks are constructed, tested, and painted at this facility. There are building
additions and storm drainage has changed including outfall locations. Raw steel/materials that are now out in the elements
will be under roof as soon as the covered area is complete.
Page: 2

Permit: NCGO30034 Owner, Facility: Isometrics Inc
Inspection Date: 1110412015 Inspection Type : Compliance Evaluation Reason for Visit: Routine
Stormwater Pollution Prevention Plan
.
Ye N� o NA NE
Does the site have a Stormwater Pollution Prevention Plan?
® ❑ ❑ ❑
# 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?
® ❑ ❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
®❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
0 ❑ ❑ ❑
# Does the Plan include a BMP summary?
® ❑ ❑ ❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
® ❑ ❑ ❑
# Does the Plan include a Preventative Maintenance and Good Housekeeping Plan?
®❑ Cl ❑
# Does the facility provide and document Employee Training?
®❑ ❑ ❑
# Does the Plan include a list of Responsible Party(s)?
® ❑ ❑ ❑
# Is the Plan reviewed and updated annually?
®❑ Q ❑
# Does the Plan include a Stormwater Facility Inspection Program?
® ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented?
® ❑ ❑ ❑
Comment: SP3 plan complete and up to date by SwS .
Update Siteplan to show site changes including building additions and chanties to storm
drainage.
Qualitative Monitoring Yea No NA NE
Has the facility conducted its Qualitative Monitoring semi-annually? ❑ ❑ ❑
Comment:
Analytical Monitoring Yea No NA NE
Has the facility conducted its Analytical monitoring? 0 ❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ®❑ ❑ ❑
Comment: Monitoring has been performed twice annually per permit requirements. Records included within
SP3 documentation.
Permit and ©utfalls 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? ® ❑ ❑ ❑
# If the facility has representative outfall status, is it property documented by the Division? 1191111
# Has the facility evaluated all illicit (non stormwater) discharges? ® 1111 ❑
Comment: This site is under current renovation and expansion. Outfall locations have chap ed.
Page: 3

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E.
Governor Director
December 4, 2012
Dennis Bracy
Isometrics Inc
Box 660
Reidsville, NC 27320
Dee Freeman
Secretary
Subject: NPDES Stormwater Permit Coverage Renewal
Isometrics Incorporated -Plant 2
COC Number NCG030034
Rockingham County
Dear Permittee:
In response to your renewal application for continued coverage under stormwater General Permit NCGO30000
the Division of Water Quality (DWQ) is forwarding herewith the reissued General Permit. This permit is
reissued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of
Agreement between the state of North Carolina and the U.S. Environmental Protection Agency, dated October
1S, 2007 (or as subsequently amended).
The following information is included with your permit package:
• A new Certificate of Coverage (COC)
• A copy of General Permit NCG030000
• A copy of the Technical Bulletin for the General Permit
• Two copies of the Discharge Monitoring Report (DMR) Form
• Two copies of the Qualitative Monitoring Report Form
The General Permit authorizes discharges of stormwater, and it specifies your obligations for discharge
controls, management, monitoring, and record keeping. Please review the new permit to familiarize yourself
with all the changes in the reissued permit. Your facility has six (6) months from the time of receipt of the
permit to update your current SPPP to reflect all new permit requirements.
The first sample period of your permit begins January 1, 2013. Your facility must sample a "measureable
storm event" beginning during the periods beginning January 1 and July 1 of every year (or, if applicable,
report "No Flow," as outlined in Part III, Section E). Also, please note that Tier 3 Actions in Part li of your
permit are triggered by benchmark exceedances on four occasions beginning on the effective date of this
permit and do not count prior exceedances.
The more significant changes in the General Permit since your last COC was issued are noted either in the
Draft Permit Fact Sheet that accompanied the public notice (http://portal.ncdenc.org/web/g(ws/su/current-
notices), or in the Response to Comments / Summary of Changes and Technical Bulletin documents that are
posted on the Stormwater Permitting Unit's website with the new General Permit. Please visit
http://Portal.ncdenr.org/web/wq/ws/su/npdessw (click on 'General Permits' tab) to review that information
for your specific General Permit carefully.
1617 Mail Service Center, Ralegh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Ralegh, North Carolina 27604
Phone: 91 H07-63001 FAX: 9IM07-6492
Internet: www.Acwaterquality.om
An Equal Opportunily 1 Affirmabve Action Employer
NorthCarolina
Natma!!ff

Dennis Bracy
December 4, 2012
Page 2 of 2
Some of the changes include:
Part 11:
• Section A: The Stormwater Pollution Prevention Plan (SPPP) section, if applicable, has been updated
to the most current language of our permits. Additional conditions for specific industry sectors have
been added to the SPPP requirements in some cases.
• Sections B, C: Failure to perform analytical stormwater monitoring may result in the Division requiring
that the permittee begin a monthly sampling scheme.
• Sections 8, C: A lower TSS benchmark of SO mg/I for HQW, ORW, PNA and Tr Waters applies to these
more sensitive waters.
• Sections 8, C: The monitoring parameter Oil & Grease (O&G) has been replaced by the parameter
Total Petroleum Hydrocarbons (TPH) for vehicle maintenance areas, and in some cases, other
analytical monitoring requirements.
• Sections B, C, D: Inability to sample due to adverse weather must be recorded in the SPPP, or in
separate on -site records if your General Permit does not require an SPPP. Adverse weather is defined
in the "Definitions" section of the permit.
• Sections B, C: The term "Representative Storm Event" has been replaced by "Measurable Storm
Event." A measurable storm event is defined in the permit.
• Section D: If the permittee fails to respond effectively to problems identified by qualitative
monitoring, DWQ may require the permittee to perform corrective action.
Please review Parts III and IV to understand the Standard Conditions of your new NPDES General Permit,
including Compliance and Liability, Reporting, Monitoring and Records requirements; Operation and
Maintenance obligations; and Definitions. Please note that all samples analyzed in accordance with the terms
of this permit must be submitted to the Division on Discharge Monitoring Report (DMR) forms available on
the Stormwater Permitting Unit's website above. DMR forms must be delivered to the Division no later than
30 days from the date the facility receives the sampling results from the laboratory. Also note that existing
permittees do not need to submit a renewal request prior to expiration unless directed by the Division.
Your coverage under the General Permit is transferable only through the specific action of DWQ. This permit
does not affect the legal requirements to obtain other permits which may be required by DENR, nor does it
relieve the permittee from responsibility for compliance with any other applicable federal, state, or local law,
rule, standard, ordinance, order, judgment, or decree. If you have any questions regarding this permit
package, please contact the Division's Stormwater Permitting Unit at [phone].
Sincerely,,
61
for Charles Wakild, P.E.
cc: DWQ Central Files
Stormwater Permitting Unit Files
Winston-Salem Regional Office

;1
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG030000
CERTIFICATE OF COVERAGE No. NCG030034
STORMWATER
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Isometrics Inc
is hereby authorized to discharge stormwater from a facility located at:
Isometrics Incorporated -Plant 2
7537 Hwy 87 N
Reidsville
Rockingham County
to receiving waters designated as Wolf Island Creek, a class C waterbody in the Roanoke River
Basin in accordance with the effluent limitations, monitoring requirements, and other
conditions set forth in Parts 1, I1, II1, and IV of General Permit No. NCG030000 as attached.
This certificate of coverage shall become effective December 4, 2012.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this 41h day of December, 2012.
for Charles Wakild, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

&IT
! qo
MCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
27 September 2012
Isometrics, Inc.
Attn: Mr. Lee Hancock, President
P.O. Box 660
Reidsville, NC 27320
Subject: Compliance Evaluation Inspection
NPDES Permit Stormwater Discharge Permit #NCG030033
NPDES Permit Stormwater Discharge Permit #NCG030034
Isometrics Plants # I and #2
Rockingham County
Dear Mr. Hancock:
Mr. Mike Thomas of the Winston-Salem Regional Office of the North Carolina Division of Water
Quality conducted a compliance evaluation inspection of Isometric Plant 41 and Plant #2 on 20 September
2012. The assistance and cooperation of Mr. Mike Leffew of Isometrics and James Frei of Stormwater
Services Group, were greatly appreciated. Inspection findings for both facilities are summarized below and
inspection reports are attached for your records.
Isometrics, Inc. Plant #1 NCGO30033
Siaht_Review
This facility is located at 1266 N. Scales St., in Reidsville, Rockingham County. Stormwater related to
industrial activity is discharged from the site to an unnamed tributary to Wolf Island Creek, which is
currently classified as Class C waters in the Roanoke River basin.
The facility was clean and in good shape at the time of inspection. Many of the housekeeping issues
noted in the previous inspection have been addressed. During the inspection, Mr. Thomas pointed out that the
used oil drum still had no secondary protection. Mr. Leffew suggested relocating the tank to the former
hazardous waste site that has existing secondary containment. Relocating the tank will bring the tank into
compliance with permit conditions. Mr. Thomas also noted that there were two smaller tanks of diesel fuel that
are used in pressure testing the tanks that do not have secondary containment. In addition, all above ground
storage tanks at the facility are required to have secondary containment with manually controlled valves, which
shall be secured closed with a locking mechanism.
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
Nne
orthCarolina
Naturally

Isometrics Inc. Plant #2 NCG030034
Plant #2 is located at 7537 NC HWY 87N, in Reidsville; Rockingham County. Stormwater related to
industrial activity is discharged to an unnamed tributary of Wolf Island Creek, which is currently classified
as Class C waters in the Roanoke River basin.
The facility was clean and in good shape at the time of inspection. Many of the housekeeping issues
noted in the previous inspection have been addressed. New structures have been built to bring most of the
industrial activity inside.
Documentation Review for Plant #1 and Plant #2
Both facilities have nearly identical Stormwater Pollution Prevention Plans and are well implemented.
Mr. Thomas did observe that there were some minor deficiencies in tracking training events and updating
the SP3.
Both facilities are following the appropriate schedules and protocols for qualitative and analytical
monitoring. Qualitative monitoring results are documented and retained per the permit requirements.
Analytical monitoring results showed that all parameters were within benchmark values and the
accompanying paperwork was complete.
We greatly appreciate your efforts to develop and implement an effective stormwater pollution
prevention plan. Please reply in writing to this letter within 30 days of receiving it. Your reply should detail
corrective actions and implementation schedules for each deficiency detailed above. If you have any
questions please feel free to contact Mike Thomas or me at (336)-771-5000.
Sincerely,
W. Corey Basinger
Surface Water Regional Supervisor
Winston-Salem Regional Office
Division of Water Quality
Attachments:
1. BIMS Inspection Report
Cc: WSR0 — SWP w/ atch
Central Files w/ atch
NPDES West Unit

Permit: NCG030034
SOC:
County: Rockingham
Region: Winston-Salem
Compliance Inspection Report
Effective: 11/01/07 Expiration: 10/31112 Owner: Isometrics Inc
Effective: Expiration: Facility: Isometrics Incorporated -Plant 2
7537 Hwy 87 N
Contact Person: Lee Hancock
Directions to Facility:
System Classifications:
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Title:
Inspection Date: 09/20/2012 Entry Time: 01:00 PM
Primary Inspector: Michael S Thomas
Secondary Inspector(s):
Reidsville NC 27320
Phone: [phone]
Certification:
Exit Time: 03:00 PM
Phone:
Phone:
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Metal Fabrication Stormwater Discharge COC
Facility Status: ■ Compliant Not Compliant
Question Areas:
M Storm Water
(See attachment summary)
Page: 1

Permit: NCG030034 Owner -Facility: Isometrics Inc
Inspection Date: 09/20/2012 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Page: 2

W/
Permit: NCGO30034 Owner - Facility: Isometrics Inc
Inspection date: 09/20/2012 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?
# 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?
# Does the Plan include a list of significant spills occurring during the past 3 years?
# Has the facility evaluated feasible alternatives to current practices?
# Does the facility provide all necessary secondary containment?
# Does the Plan include a t3MP summary?
# 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)?
# 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:
Qualitative Monitoring
Has the facility conducted its Qualitative Monitoring semi-annually?
Comment:
Analytical Monitoring
Has the facility conducted its Analytical monitoring?
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas?
Comment:
Permit and Outfalls
# Is a copy of the Permit and the Certificate of Coverage available at the site?
# Were all outfalls observed during the inspection?
# If the facility has representative outfall status, is it properly documented by the Division?
# Has the facility evaluated all illicit (non stormwater) discharges?
Comment:
■nn❑
■000
■nnn
®0D0
nr0■n
■nnn
■nnn
■nnn
■D00
■D130
■nnn
■❑nn
■ 0 D 0
■nnn
■nnn
Yes No NA NE
Yes No NA NE
■pnn
nn■n
Yes No NA NE
Page: 3

Compliance Inspection Report
Permit: NCG030033 Effective: 11/01/07 Expiration: 10/31112 Owner: Isometrics Inc
SOC: Effective: Expiration: Facility: Isometrics Incorporated -Plant 1
County: Rockingham 1266 N Scales St
Region: Winston-Salem
Contact Person: Lee Hancock Title:
Directions to Facility:
System Classifications:
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 09/20/2012 Entry Time: 01:00 PM
Primary Inspector: Michael S Thomas
Secondary Inspector(s):
Reidsville NC 2732D
Phone: [phone]
Certification:
Exit Time: 03:00 PM
Phone:
Phone:
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Metal Fabrication Stormwater Discharge COC
Facility Status: ■ Compliant 0 Not Compliant
Question Areas:
■ Storm Water
(See attachment summary)
Page: 1

Permit: NCG030033 Owner - Facility: Isometrics Inc
Inspection Date: 09/20/2012 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Page: 2

1 "
Permit: NCG030D33 Owner - Facility: Isometrics Inc
Inspection Date: 09/20/2012 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?
# 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?
# Does the Plan include a list of significant spills occurring during the past 3 years?
# Has the facility evaluated feasible alternatives to current practices?
# Does the facility provide all necessary secondary containment?
# Does the Plan include a BMP summary?
# 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)?
# 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: 3 above ground storage tanks need secondary containment.
Qualitative Monitoring
Has the facility conducted its Qualitative Monitoring semi-annually?
Comment:
Analytical Monitoring
Has the facility conducted its Analytical monitoring?
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas?
Comment:
Permit and Outfalls
# Is a copy of the Permit and the Certificate of Coverage available at the site?
# Were all outfalls observed during the inspection?
# If the facility has representative outfall status, is it properly documented by the Division?
# Has the facility evaluated all illicit (non stormwater) discharges?
Comment:
Yes No NA NE
■nr[1ln
Yes No NA NE
■❑❑❑
❑n■❑
Yes _No NA NE
Page: 3

`!
United States Environmental Protection Agency
Form Approved.
EPA Washington, Q.C. 20460
OMB No. 2040-0057.
Water Compliance Inspection Beport
Approval expires B-31.98
Section A. National Data System Coding (i.e,, PCS)
Transaction Code NPDES yrlmolday Inspection Type Inspector Fac Type
1 l-J 2 U 3 1 NCG030034 1 11 121 05/0�/11 17 18 U 19 L( 20 LiRemarks
211 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 1 1 1 1 I, 1 1 1.1 1 1 1 1 1 1 1 166
.1 ,1 ,1 _1
Inspection Work Days Facility Self -Monitoring Evaluation Rating 81 QA — — — - --Reserved-----------------
67 1 1 69 70 L-! 71 U 72 U 73 W 74 75 80
Section B: Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also inctude
Entry Time/Date
Permit Effective Date
POTW name and NPDES permit Number)
Isometrics Incorporated -Plant 2
10:40 AM 05/05/11
02/09/01
Exit Time/Date
Permit Expiration Date
7537 Hwy 87 N
Reidsville NC 27120
11:00 AM 05/05/11
07/08/31
Name(s) of Onsite Representative(s)Tritles(s)lPhone and Fax Number(s)
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
.Sox 660 Reidsville NC 27320//910-349-2329/ Contacted
No
Lee A 4Nca
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date
David C Russell WSRO WQ//336-771-4608 Ext.260/
Signature of Management Q A Reviewer Agency/OfficelPhone and Fax Numbers Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete.

Hermit
(If the present permit expires in 6 months or less). Has the permittee submitted a new application?
Is the facility as described in the permit?
Are there any special conditions for the permit?
Is access to the plant site restricted to the general public?
Is the inspector granted access to all areas for inspection?
Comment: Met Lee Hancock, President and Mike Leffer, Engineer. This site has 2 monitoring locations. All the
required monitoring is being done. Stormwater Services Group does the stormwater program for Isometrics. No
problems with the program.
Yes N3 NA Nc
❑ ❑ M ❑
■ 13 0
❑ ❑ ■ ❑
❑ ❑ ■ ❑
0000

LEE HANCOCK
ISOMETRICS INCORPORATED -PLANT 2
BOX 660
REIDSVILLE, NC 27323
i 53-7 \�w�P
Dear Permittee:
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
August 23, 2002 N.C. C epr. o$ PHNIR
AUG 2 9 ,2002
Regional Office
Subject: NPDES Stormwater Permit Renewal
ISOMETRICS INCORPORATED -PLANT 2
COC Number NCG030034
Rockingham County
In response to your renewal application for continued coverage under general permit NCG030000, the Division of
Water Quality (DWQ) is forwarding herewith the reissued stormwater general permit. This permit is reissued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between the state of North Carolina and the U.S. Environmental Protection Agency, dated December 6. 1983_
The following information is included with your permit package:
* A new Certificate of Coverage
* A copy of General Stormwater Permit NCG030000
A copy of the Analytical Monitoring Form (DMR)
* A copy of a Technical Bulletin for the general permit
Your coverage under this general permit is not transferable except after notice to DWQ. The Division may require
modification or revocation and reissuanc;e of the Certificate of Coverage_ This permit does not affect the legal
requirements to obtain other permits which may be required by DENR or relieve the permittee from responsibility
for compliance with any other applicable federal, state, or local law, rule, standard, ordinance, order. judgment, or
decree.
If you have any questions regarding this permit package please contact Bill Mills of the Central Office Stormwater
and General Permits Unit at [phone], ext. 548
Sincerely,
Bradley Bennett, Supervisor
Stormwater and General Permits Unit
CC' Central Files
Stormwater & General Permits Unit Files
Winston-Salem Regional Office
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 [phone]
ern
NCDENR
Customer Service
1-800-623-7748

/i
State of North Carolina
t -Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Dennis M. Bracy
Isometrics, Inc.
Box 660
Reidsville, NC 27320
Dear Mr. Bracy:
Ir
I�EHNF11.
May 14, 1993 RECEIVED
N.C. Dept. of EMR
MAC 18 1993
Winston --Salem
Subject: General Permit No. NCG0300041 Regional office
Isometrics, Inc. Plant 2
COC NCG030034
Rockingham County
In accordance with your application for discharge permit received on September -24, 1992, we are
forwarding herewith the subject certificate of coverage to'discharge under the subject state - NPDES general
permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215 .1 and the
Memorandum of Agreement between North Carolina and the US Environmental Protection agency dated
December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to request an individual permit by submitting an individual permit
application. Unless such demand is made, this certificate of coverage shall be final and binding.
Please take notice that this certificate of coverage is not transferable except after notice to the Division
of Environmental Management. The Division of Environmental Management may require modification or
revocation and reissuance of the certificate of coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Mr. Bill Mills at telephone number 919n33-
5083.
cc:
Sincerely,
Original Signed By
Coieeni Sazl n A. Preston ow r., P. E.
Winston-Salem Regional Office
Pollution Prevention Pays
P.Q. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
Y1 fl I; _► 1 ► I I 1
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION_ S STEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
Dennis M. Bracy
is hereby authorized to discharge stormwater from a facility located at
Isometrics, Inc. Plant 2
Intersection of Hwy 87 and Vance Street Extension
Reidsville
Rockingham County
to receiving waters designated as an unnamed tributary to Wolf Island Creek in the Roanoke River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III
and 1V of General Permit No. NCG030000 as attached.
This certificate of coverage shall become effective May 14,1993.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day May 14, 1993.
Original Signed By
Coleen H. Sullins
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission.

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Permit NCGb3063< Version:! b _ Stairs: Adore
Permit Type" Metal Fabrication Stormvrater Discharge COC
Permit Class+ccatfon: COC Primary Related Permit . NCG030000
Program Category NPDES SW Armin Regldn; Win5loo-Salem
Facllity isometrics Incorporated -Plant 2 Qetail&. 71 County: Rockingham
Dwner. sometrlCs Inc ....- Dgtails::: - Project Type: -Renewal
- Dates -
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`Map' Decimal DD:MM:SE
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Latimra: 3fi.3fi§4 3fi 22,10 Me=dl Map inter) by digital or manextracoon
Longitude: .79.7217 ,79.43.19 Datum: Unknown
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TIM9
Phone Number
Owner €Owner Bracy, Dennls M.
(33 149-2329
Permtt Contact Person Hancock Lee
(3367 3432329
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National Pollutant Discharge Elimination System w. ,4eat.of-►ts
REPRESENTATIVE OUTFALL STATUS (ROS) SEP 14 .
REQUEST FORM Winston-SA19M
R,aionai office
If a facility is required to sample multiple discharge locations with very similar storm water discharges, the
permittee may petition the Director for Representative Outfall Status (ROS). DWO may grant
Representative Outfall Status if stormwater discharges from a single outfall are established as
representative of discharges from multiple outfalls. Approved ROS will reduce the number of outfalls
where anal lcal sampling requirements apply -
if Representative Outfall Status is granted, ALL outfalls are still subject to the gualitative monitoring
requirements of the facility's permit. After ROS is granted, the facility must notify D WO in writing if any
changes to the facility or its operations take place that would affect this status. The approval letter from
DWO must be kept on -site with the facility's Stormwater Pollution Prevention Plan.
For questions, please contact the DWO Regional Office for your area (see page 3).
(Please print or type)
1) Enter the permit number to which this ROS request applies:
Individual Permit (or) Certificate of Coverage
N I C S N C G Ja I '* aO
2) Facility Information:
Owner/Facility Name
Facility Contact M l W-a_,
Street Address 753 7 Al e-` a //W Y
City geEyt SV I. L(, - IState N e- - ZIP Code 2 3 Z-0
County oGiGI TJ 6 R AAA E-mail Address
Telephone No. Z _ ,;�4 Fax: 33(o
3) List the representative outfall(s) information (attach additional sheets it necessary):
Outtall(s)
as
is representative of Outtali(s) ©a
Outfalls' drainage areas have the same or similar activities?
Outfalls' drainage areas contain the same or similar materials?
Outfalls have similar monitoring results?
Outfall(s)
2/yes
❑ No
eYes
❑ No
l(Yes
❑ No ❑ No data'
is representative of Outfa!!(s)
Outfalls' drainage areas have the same or similar activities?
Outfalls' drainage areas contain the same or similar materials?
Outfalls have similar monitoring results?
Outfall(s)
is representative of Outfall(s)
Outfalls' drainage areas have the same or similar activities?
Outfalls' drainage areas contain the same or similar materials?
Outfalls have similar monitoring results?
❑ Yes
❑ No
❑ Yes
❑ No
❑ Yes
❑ No ❑ No data*
❑ Yes.
❑ No
❑ Yes
❑ No
❑ Yes
❑ No ❑ No data*
*Non-compliance with analytical monitoring prior to this request may prevent ROS approval. Specific
circumstances will be considered by the Regional Office responsible for review,
Page 1 of 3
SWU-ROS-090508 East revised 9/5/2008

Representative Outtall Status Request
4) Detailed explanation about why the outtalls above should be granted Representative Status:
(Or, attach a letter or narrative to discuss this information.) For example, describe how activities and/or
materials are similar.
S N d • 1
5) Certification:
North Carolina General Statute 143-215.6 B(i) provides that:
Any person who knowingly makes any false statement, representation, or certification in any application, record, report, plan, or other
document filed or required to be maintained under this Article or a rule implementing this Article; or who knowingly makes a false
statement of a material fact in a rufemaking proceeding or contested case under this Article; or who falsifies, tampers with, or knowingly
renders inaccurate any recording or monitoring device or method required to be operated or maintained under this Article or rules of the
[Environmental Management] Commission implementing this Article shall be guilty of a Class 2 misdemeanor which may include a fine
not to exceed ten thousand dollars ($10,000).
I hereby request Representative Outfall Status for my NPDES Permit. I understand that ALL outfalls are still
• subject to the qualitative monitoring requirements of the permit. I must notify DWQ in writing if any changes to
the facility or its operations take place after ROS is granted that may affect this status. If ROS no longer
applies, I understand I must resume analytical monitoring of all outfalls as specified in my NPDES permit.
I certify that I aryl familiar with the information contained in this application and that to the best of my
knowledge and belief such information is true, complete, and accurate.
Printed Name of Person Signing: �A k c 4e AEL :&, i.-k-:: t= F6 w
Title: VES 16 ]72A P-rSMAnt Ci Ne&(2-r �•i G_ M'��nT'
vnik6l -- dgl©alaj
(Signature of Applicant) (Date Signed)
Please note: This application for Representative Outfall Status is subject to approval by the
NCDENR Regional Office. The Regional Office may inspect your facility for compliance with
the conditions of the permit prior to that approval.
Final Checklist for ROS Request
This application should include the following items:
211- This completed form.
2r"- Letter or narrative elaborating on the reasons why specified outfalls should be granted representative status,
/ unless all information can be included in question 4.
IS Br"-
Two (2) copies of a site map of the facility with the location of all outfalls clearly marked, including the
/ drainage areas, industrial activities, and raw materials/finished products within each drainage area.
LB'/ Summaryof results from monitoring conducted at the outfalls listed in Question 3.
Q' Any other supporting documentation.
Page 2 of 3
SWU-ROS-090508 Last revised 9/5/2008

Representative Outfall Status Request
Mail the entire package to:
NC DENR Division of Water Quality
0 Surface Water Protection Section
at the appropriate Regional Office (See map and addresses below)
•
Notes
The submission of this document does not guarantee Representative Outfall Status (ROS) will be granted
as requested. Analytical monitoring as per your current permit must be continued, at all outfalls, until
written approval of this request is granted by DWO.
Non-compliance with analytical monitoring prior this request may prevent ROS approval. Specific
circumstances will be considered by the Regional Office responsible for review.
For questions, please contact the DWQ Regional Office for your area.
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NC 28778
Phone [phone]
FAX [phone]
Fayetteville Regional Office
Systel Building,
225 Green St., Suite 714
Fayetteville, NO 28301-5094
Phone [phone]
FAX [phone]
Mooresville Regional Office
610 East Center Ave.
Mooresville, NO 28115
Phone [phone]
FAX [phone]
Raleigh Regional Office
1628 Mail Service Center
Raleigh, NO 27699-1628
Phone [phone]
FAX [phone]
Washington Regional Office
943 Washington Square Mall
Washington, NO 27889
Phone [phone]
FAX [phone]
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405
Phone [phone]
FAX [phone]
Winston-Salem Regional Office
585 Waughtown Street
Winston-Salem, NO 27107
Phone [phone]
Water Quality Main FAX [phone]
Central Office
1617 Mail Service Center
Raleigh, NC 27699-1617
Phone [phone]
FAX [phone]
Page 3 of 3
SWU-ROS-090508 Last revised 9/5/2008

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Detailed Explanation for ROS
Attachment No. 1
The Permittee has selected SDO-002 as the representative outfall for the following
reasons:
a. There is a greater variety of exposed industrial activity occurring within its drainage
area.
b. Scrap debris is often stored within its drainage area.
c. Finished metal parts awaiting assembly are stored exposed within its drainage area.
d. A portion of the paint booth and the undercoating spray pit is located within its
drainage area.
e. Drums containing hazardous wastes, which are placed inside a plastic clam -shell
storage device, are located within its drainage area.
f. Roof drainage from the Tank Fabrication building accounts for a large portionof the
impervious area.
SDO-003, while having a larger drainage area than SDO-002, has fewer potential
pollutant sources and less various exposed industrial activities. The industrial activities
within the SDO-003 drainage area consist of:
a. Parking for truck chassis awaiting tank mounting.
b.. Finished tanker truck parking_.
c. Finished modular tank assemblies storage.
d. Employee parking lot.
e. Roof drainage from the Tank Fabrication building.
Prior to 2008, SDO-003 was not considered an industrial outfall as only employee
parking and finished tanker truck parking occurred within its drainage area. Therefore no
analytical monitoring data exists for SDO-003. When the Permittee's production
increased and additional industrial activity sometimes occurred within the SDO-003
drainage area, it was decided that qualitative monitoring was prudent. Qualitative
monitoring reports for SDO-002 and SDO-003 are enclosed.
After NCG030000 was re -issued in 2007, the Permittee concluded that SDO-001 was not
a point source discharge, and was thus eliminated as an outfall.. SDO-001 has always
consisted of a short section of 12" HDPE pipe passing under the rear fence with the pipe
discharging as sheet flow for a distance of at least 200 feet across an open field
overgrown with kudzu. There is no defined channel between the end of pipe and the
receiving intermittent stream.
U

1 0
V
DO-002 IS ATWOODED
NSTALLED WEIR
HERE DISCHARGES�O-002ROM PIPES JOIN
WOODED
% OPEN FIELD
DA
— 57724 sf
WOODED Im p
= 55 %
I OVERGROWN FIELD
SDO-001 ELIMINATED
[
SINCE DISCHARGE IS
-FLOW ACROSS OPEN
EARTH AND GRAVEL BERM
F EELD
12' HDPE PIPE
2 - 12' HDPE PIPES ALONG NORTH FENCE LINE
WOODED
12' HDPE PIPE
EARTH AND GRAVEL >1ERM
-
ALONG WEST FENCE LINE
`•
MISC PARTS STORAGE
HAZMAT STORAGE
5 : PAINT
BOOTH
4
SCRAP DEBRIS/ METAL
B
GRAVEL
�
PAINT
STORAGE
O
SHED
GATE
1
i SCRAP META{. BINS
UNDERCOAT SPRAY PIT
~
VlmDED
po M1SC PARTS STORAGE
/ `
Q EXPOSED DRUMS
OPEN FIELD
i
j
~
N
ACID VATS
1
�
SDO-003
Bldg. # 1
- GRAVEL
DA
= 120,098 sf
Imp
= 45 %
LOADING
Tank Fabrication
DOCK
i
STONE
ti+
EMPLOYEE PARKINGDUMPSTERMISC.
SCRAP EQUIPMENT
N
GRAVEL
GRASS
�`.
+
TRUCK CHASSIS PARKING FINISHED TANKER PARKING
GRASS
'
30 60 90 120 IBO
------------------------------
------ CRASS -LINED SWALE-------------
----------- "�� , �—
MAP 2 - FACILITY SITE PLAN
GATE
Developed for
'
GRASS
ISometrks, Inc. (Plant #2)
SCRAP METAL BIN
TRUCK CHASSIS PARKING
7537 Hwy 87 North
HWY 87

E
C]
•

0
SDO-•00P IS AT WOODED
INSTALLED WEIR
WHERE DISCHARGE
FROM PIPES JOIN
% OPEN FIELD
S DO - 00 2
r
DA = 57724 sf
waoDEB
WOODED
I m = 5 5 ��O
p
f QVERGRpVN FIELD
SDII-001 ELIMINATED
+
SINCE DISCHARGE IS
ACROSS OPEN
Irl
12' HDPE PIPE
2 - 12' HDPE PIPES
EARTH AND GRAVEL BERM
ALONG 113RTH FENCE LINE
FIELD
WOODED
IL" HDPE PIPE
EARTH AND GRAVEL
BERM -
•.
�~
ALONG WEST FENCE
LINE
MISC PARTS STORAGE
PAINT
am
4
SCRAP DEBRIS/ METAL
GRAVEL
STOORAGE
GATE
/TSTWAGE
S1ED
SCRAP METAL BINS
UNDERCOAT SPRAY PIT
1
NODDED i
p MISC PARTS STORAGE
O EXPOSED DRUMS
OPEN FIELD
ul
ACID VATS
SDO_003
Bldg. # 1
- GRAVEL
DA — 120,098
sf
Imp = 45 %
LOADING_
Tank Fabrication
DOCK
STONE CHECK DAM
t
EMPLOYEE PARKING
DUMPSTER
MISC. SCRAP EQUIPMENT
GRAVEL
..
i
N
�
41
�
GRASS
\
TRUCK CHASSIS PARKING FINISHED TANKER PARKING
GRASS
0 30 60 90 120 too
t �
_--------__" MAP 2 - FACILITY SM PLA]
' ----- GRASS -LINED SWALE '
GATE Developed for
' • GRASS p
SCRAP METAL BIN ` TRUCK CHASSIS PARKING ISOIDCtli'�CS� Inc.L(Plant #2�
7537 Hwy 87 North
HWY 87

0
•
•
STORMWATER DISCHARGE OUTFALL (SDO)
QUALITATIVE MONITORING REPORT
BMP Checklist #6
NPDES PERMIT No. NCG030034
FACILITY: Isometrics, Inc. (Plant #2)
COUNTY: Rockingham
PHONE: [phone]
INSPECTOR: Jim Frei/ SwSG
DATE: June 16 2009 cQ 0355
OUTFALL No.
OUTFALL TYPE:
RECEIVING STREAM:
SDO- 002
❑ SWALE 0 PIPE ❑ DITCH
Unnamed trib to Wolf Island Creek
❑ Dry weather observation Wet weather observation
❑ No flow during dry weather ❑ Flow during dry weather ❑ Standing water during dry weather
Describe the industrial activities occurring within the outfall drainage area.
Portion of Tanker Fabrication building, HazWaste CAP, scrap debris piles, AST-1
COLOR - Describe the discharge color (e.g. red, brown, green, blue) and tint (&g.. light, medium, dark).
Light Tan
ODOR - Describe any distinct odors (e.g, gasoline, rotten eggs, chlorine) the discharge may have.
No Odor
CLARITY - Choose the number that best ranks the clarity of the discharge, where 1 is clear and 10 is very
cloudy.
1 2 3 4 5 6 7 8 9 10
FLOATING SOLIDS - Choose the number that best ranks the amount of floating solids in the discharge,
where 1 is no solids and 10 is the surface covered with floating solids.
1 2 3 4 5 6 7 8 9 10
SUSPENDED SOLIDS - Choose the number that best ranks the amount of suspended solids in the discharge,
where 1 is no solids and 10 is extremely muddy.
1 2 3 4 5 6 7 8 9 10
FOAM -
Is there any foam on or in the stormwater discharge? yes ✓NO
OIL SHEEN -
Is there oil sheen visible on the stormwater discharge or at the outfall? yes ✓NO
DEPOSITION -
Are there deposits of sludge or other material at the outfall? yes ✓NO
EROSION -
Is there erosion at or immediately below the outfall? yes ✓ NO
List and describe other obvious indicators of stormwater pollution:
Litter/ debris near inlet end of pipes
By this signature, I certify that this report is accurate and complete to the best-0 my knowledge:
Permittee's Signature Inspector's Signature
Isometrics, Inc. - Plant #2
June 2009 Report
Stormwater Pollution Prevention Plan
BMP Checklist #6

•
0
n

•
0
•
STORMWATER DISCHARGE OUTFALL (SDO)
QUALITATIVE MONITORING REPORT
BMP ChwMilet 06
NPDES PERMIT No. NCG030034
FACILITY: Isometrics, Inc. (Plant #2)
COUNTY: Rockingham
PHONE: [phone]
INSPECTOR: Jim Frei/ SwSG
DATE: June 16 2009 @ 0410
OUTFALL No.
OUTFALL TYPE:
RECEIVING STREAM:
SDO- 003
❑ SWALE ❑ PIPE ® DITCH
Unnamed trib to Wolf Island Creek
❑ Dry weather observation 2 Wet weather observation
❑ No flow during dry weather 0 Flow during dry weather ❑ Standing water during dry weather
Describe the industrial activities occurring within the outfall drainage area.
Portion of Tanker Fabrication building, Truck chassis parking, Finished Tanker Truck parking
COLOR - Describe the discharge color (e.g. red, brown, green, blue) and tint (e.g., light, medium, dark).
Medium Orange
ODOR — Describe any distinct odors (e.g. gasoline, rotten eggs, chlorine) the discharge may have.
No Odor
CLARITY - Choose the number that best ranks the clarity of the discharge, where 1 is clear and 10 is very
cloudy.
1 2 3 4 5 6 7 8 9 10
FLOATING SOLIDS - Choose the number that best ranks the amount of floating solids in the discharge,
where 1 is no solids and 10 is the surface covered with floating solids.
1 2 3 4 5 6 7 8 9 10
SUSPENDED SOLIDS - Choose the number that best ranks the amount of suspended solids in the discharge,
where 1 is no solids and 10 is extremely muddy.
1 2 3 4 5 6 7 8 9 10
FOAM -
Is there any foam on or in the stormwater discharge? yes ENO
OIL SHEEN -
Is there oil sheen visible on the stomtiwater discharge or at the outfall? yes ✓NO
DEPOSITION -
Are there deposits of sludge or other material at the outfall? yes VNQ
EROSION -
Is there erosion at or immediately below the outfall? yes
List and describe other obvious indicators of stormwater pollution:
None observed today.
By this slgnature, I certify that this report its accurate and complete to the best -of my know) ge:
Perrnittee's Signature Inspector's Signature
Isometrics, Inc. — Plant #2
June 2009 Report
5tormwater Pollution Prevention Plan
BMP Checklist #6

•
.7
•

•
•
•
STORMWATER DISCHARGE OUTFALL (SDO)
QUALITATIVE MONITORING REPORT
BMP Checklist #6
NPDES PERMIT No. NCG030034
FACILITY: Isometrics, Inc. (Plant #2)
COUNTY: Rockingham
PHONE: [phone]
INSPECTOR: Jim Frei/ SwSG
DATE: August 15, 2008
OUTFALL No.
OUTFALL TYPE:
RECEIVING STREAM:
SDO- 002
❑ SWALE RI PIPE ❑ DITCH
Unnamed trib to Wolf Island Creek
❑ Dry weather observation 10 Wet weather observation
❑ No flow during dry weather 11 Flow during dry weather ❑ Standing water during dry weather
Describe the industrial activities occurring within the outfall drainage area.
Portion of Tanker Fabrication building, HazWaste CAP, scrap debris piles, AST-1, abandoned tanker
COLOR - Describe the discharge color (e.g. red, brown, green, blue) and tint (e.g., light, medium, dark).
Light Tan
ODOR - Describe any distinct odors (e.g. gasoline, rotten eggs, chlorine) the discharge may have.
No Odor
CLARITY - Choose the number that best ranks the clarity of the discharge, where 1 is clear and 10 is very
cloudy.
1 2 3 4 5 6 7 8 9 10
FLOATING SOLIDS - Choose the number that best ranks the amount of floating solids in the discharge,
where 1 is no solids and 10 is the surface covered with floating solids.
1 2 3 4 5 6 7 8 9 10
SUSPENDED SOLIDS - Choose the number that best ranks the amount of suspended solids in the discharge,
where 1 is no solids and 10 is extremely muddy.
1 2 3 4 5 6 7 8 9 10
FOAM -
Is there any foam on or in the stormwater discharge? yes NO
OIL SHEEN -
Is there oil sheen visible on the stormwater discharge or at the outfall? ✓YE_S no
DEPOSITION -
Are there deposits of sludge or other material at the outfall? yes ✓NO
EROSION -
Is there erosion at or immediately below the outfall? yes ✓NO
List and describe other obvious indicators of stormwater pollution:
Small amount of litter near inlet end of pipes.
By this signature, I certify that this report is accurate and complete to the best"f my knowlgdge:
Permittee's Signature lnspectors Signature
Isometrics, Inc. - Plant # 2
August 2008 Report
Stormwater Pollution Prevention Plan
BMP Checklist #6

•
•
•
STORMWATER DISCHARGE OUTFALL (SDO)
QUALITATIVE MONITORING REPORT
BMP Checklist #6
NPDES PERMIT No. NCG030034
FACILITY: Isometrics, Inc. (Plant #2)
COUNTY: Rockingham
PHONE: [phone]
INSPECTOR: Jim Frei/ SwSG
DATE: August 15, 2008
OUTFALL No. OUTFALL TYPE:
RECEIVING STREAM:
SDO- 003 ❑ SWALE ❑ PIPE ® DITCH
Unnamed trib to Wolf Island Creek
❑ Dry weather observation R1 Wet weather observation
❑ No flow during dry weather ❑ Flow during dry weather ❑ Standing water during dry weather
Describe the industrial activities occurring within the outfall drainage area.
Portion of Tanker Fabrication building, Truck chassis parking, Finished Tanker Truck parking
COLOR - Describe the discharge color (e.g. red, brown, green, blue) and tint (e.g., light, medium, dark).
Light Orange
ODOR - Describe any distinct odors (e.g. gasoline, rotten eggs, chlorine) the discharge may have.
No Odor
CLARITY - Choose the number that best ranks the clarity of the discharge, where 1 is clear and 10 is very
cloudy.
1 2 3 4 5 6 7 8 9 10
FLOATING SOLIDS - Choose the number that best ranks the amount of floating solids in the discharge,
where 1 is no solids and 10 is the surface covered with floating solids.
1 2 3 4 5 6 7 8 9 10
SUSPENDED SOLIDS - Choose the number that best ranks the amount of suspended solids in the discharge,
where 1 is no solids and 10 is extremely muddy.
1 2 3 4 5 6 7 8 9 10
FOAM -
Is there any foam on or in the stormwater discharge? yes ENO
OIL SHEEN -
Is there oil sheen visible on the stormwater discharge or at the outfall? yes ✓ NO
DEPOSITION -
Are there deposits of sludge or other material at the outfall? yes ✓NO
EROSION -
Is there erosion at or immediately below the outfall? yes -'NO
List and describe other obvious indicators of stormwater pollution:
None observed today.
Bythie signature, I certify that this report is accurate and complete to the bes"f my ke ge:
Permittee's Signature Ian spectorls Signature
Isometrics, Inc. — Plant #2 Stormwater Pollution Prevention Plan
August 2008 Report BMP Checklist #6

STORMWATER DISCHARGE OUTFALL (SDO)
QUALITATIVE MONITORING REPORT
• BMP Checklist #6
0
•
NPDES PERMIT No. NCG030034
FACILITY: Isometrics, Inc. (Plant #2)
COUNTY: Rockingham
PHONE: [phone]
INSPECTOR: Jim Frei/ SwSG
DATE: March 4 2008
OUTFALL No.
OUTFALL TYPE:
RECEIVING STREAM:
SDO- 002
❑ SWALE 0 PIPE ❑ DITCH
Unnamed trio to Wolf Island Creek
❑ Dry weather observation Wet weather observation
* No flow during dry weather 0 Flow during dry weather ❑ Standing water during dry weather
Describe the industrial activities occurring within the outfall drainage area.
Portion of Tanker Fabrication building, HazWaste CAP, scrap debris piles, AST-1
COLOR - Describe the discharge color (e.g. red, brown, green, blue) and tint (e.g., light, medium, dark).
Light Tan
ODOR - Describe any distinct odors (e.g. gasoline, rotten eggs, chlorine) the discharge may have.
No Odor
CLARITY - Choose the number that best ranks the clarity of the discharge, where 1 is clear and 10 is very
cloudy.
1 2 3 4 5 6 7 8 9 10
FLOATING SOLIDS - Choose the number that best ranks the amount of floating solids in the discharge,
where 1 is no solids and 10 is the surface covered with floating solids.
1 2 3 4 5 6 7 8 9 10
SUSPENDED SOLIDS - Choose the number that best ranks the amount of suspended solids in the discharge,
where 1 is no solids and 10 is extremely muddy.
1 2 3 4 5 6 7 8 9 10
FOAM -
Is there any foam on or in the stormwater discharge? yes ✓NO
OIL SHEEN -
Is there oil sheen visible on the stormwater discharge or at the outfall? yes ✓NO
DEPOSITION -
Are there deposits of sludge or other material at the outfall? yes ✓NO
EROSION -
Is there erosion at or immediately below the outfall? yes ✓NO
List and describe other obvious indicators of stormwater pollution.
Litter/ debris near inlet end of pipes
By this signature, I certify that this report is accurate and complete to the best-vf my knowledge:
72
Permittee's Signature Inspector's Signature
Isometrics, Inc. - Plant #2 Stormwater Pollution Prevention Plan
March 2009 Report BMP Checklist #6

•
•
STORMWATER DISCHARGE OUTFALL (SDO)
QUALITATIVE MONITORING REPORT
NPDES PERMIT No. NCG030034 FACILITY: Isometrics, Inc. (Plant #2)
COUNTY: Rockingham PHONE: [phone]
INSPECTOR: Jim Frei/ SwSG DATE: March 4 2008
OUTFALL No.
OUTFALL TYPE: RECEIVING STREAM:
SDO- 003
❑ SWALE ❑ PIPF ® DITCH Unnamed trib to Wolf Island Creek
❑ Dry weather observation R1 Wet weather observation
❑ No Flow during dry weather ❑ Flow during dry weather ❑ Standing water during dry weather
Describe the industrial activities occurring within the outfall drainage area.
Portion of Tanker Fabrication building, Truck chassis parking, Finished Tanker Truck parking
COLOR - Describe the discharge color (e.g. red, brown, green, blue) and tint (e.g., light, medium, dark).
Medium Orange
ODOR - Describe any distinct odors (e.g. gasoline, rotten eggs, chlorine) the discharge may have.
No Odor
CLARITY - Choose the number that best ranks the clarity of the discharge, where 1 is clear and 10 is very
cloudy.
1 2 3 4 5 6 7 8 9 10
FLOATING SOLIDS - Choose the number that best ranks the amount of floating solids in the discharge,
where 1 is no solids and 10 is the surface covered with floating solids.
1 2 3 4 5 6 7 8 9 10
SUSPENDED SOLIDS - Choose the number that best ranks the amount of suspended solids in the discharge,
where 1 is no solids and 10 is extremely muddy.
1 2 3 4 5 6 7 8 9 10
FOAM -
Is there any foam on or in the stormwater discharge? yes -'NO
OIL SHEEN -
Is there oil sheen visible on the stormwater discharge or at the outfall? yes /NO
DEPOSITION -
Are there deposits of sludge or other material at the outfall? yes ✓NO
EROSION -
Is there erosion at or immediately below the outfall? yes ✓NO
List and describe other obvious indicators of stormwater pollution:
None observed today.
By this signature, l certify that this report is accurate and complete to the bes"f my knowledge:
Permittee's Signature Inspector's Signature
Isometrics, Inc. - Plant #2 Stormwater Pollution Prevention Plan
March 2009 Report BMP Checklist #6

ISOMETRICS, INC.
P. O. Box 660
Reidsville, NC 27323
Street Address: 1266 N. Scales St.
Reidsville, NC 27323-066041EW
www.isometrics-inc.com
April 21, 2009
Steve W. Tedder
Water Quality Regional Supervisor
NCDENR-DWQ
585 Waughtown St.
Winston-Salem NC 27107
RE: NOV#: NOV-2009-PC-0262
Isometrics Plant #2
NPDES General Permit NCG030034
Mr. Tedder:
RECEIVED
N.G. Deot of ENR
APR 2 4 2009
W�nston•SaIQm
Rtpianal OfFice
Phone: [phone]
1-800-567-7510
Fax., 336-349-4744
:ollum [e-mail]
We appreciate this opportunity to respond to your letter dated March 25, 2009. The following are our
responses to your findings.
6. Housekeeping will be improved. The owner has committed to removing 50% of the
accumulated abandoned equipment and scrap debris from the facility no later than December
31, 2009, and the remainder to be removed by March 31, 2010.
Please note that metal stock will continue to be stored on racks outdoors.
6_a. All open top containers will either be closed or poured into a larger drum. Containers of
unknown liquids will be removed from the site by Safety-Kleen by June 30, 2009.
6.b. The vehicle undercoating pit does accumulate rainwater. Effective immediately, the
accumulated rainwater will be visually inspected, documented, and pumped onto the ground
for infiltration only if the inspection shows no evidence of contamination. A checklist is
provided in the SWPPP for recording these pre-release inspections. Further, we will lower the
walls and cover the ends of the structure to preclude the entry of rainwater.
Our experience with this accumulated rainwater is that it does not show an oil sheen — the
undercoating material solidifies and settles to the bottom of the put — nor is the water
discolored or cloudy.

6.c Sandblasting operations have been moved indoors effective April 10, 2009.
We will test the sand for toxic and hazardous characteristics by May 31, 2009. The sand will
be removed and disposed into an appropriate facility only if it is found to be toxic or hazardous;
otherwise we will stabilize it in place with topsoil, seeding, and mulch.
6.d. The hazmat drum storage shed has a secondary containment volume of 603.5 gallons. The
largest tank within this shed has a volume of 180 gallons. The volume of the secondary
containment meets the regulatory requirements. This storage shed will be removed and
replaced with commercially purchased hazmat storage devices with secondary containment
We also will purchase an above ground diesel fuel tank with secondary containment.
The Permit does not specifically require secondary containment inspections. There have been
no controlled releases of accumulated rainwater — the hazmat shed has a roof, and does not
accumulate significant rainfall — rainwater is allowed to evaporate, thus there are no records
documenting such releases. The hazmat shed is inspected twice per year; the Permittee is
directed to clean all drips and residuals immediately upon discovery.
All drums and containers holding used or unknown materials currently sitting in the yard will be
removed by Safety-Kleen no later than June 30, 2009.
Employees have been instructed to store all containers indoors, within the designated hazmat
shed, or within secondary containment pallets and to maintain labels and other identifying
marks on the containers.
This facility is a Conditionally Exempt Small Quantity Generator; applicable rules regarding the
storage of hazardous wastes are being followed.
6.e. An employee has been tasked to walk the facility grounds and to remove with a shovel all soil
with visible oil stains. This soil will be placed into a drum and removed along with the drums
identified in 3.d. This task commenced as of April 15. 2009 and will be completed by May 15
2009.
6.f..1. The Permittee is in the process of eliminating SDO-001. By modifying this outfall into an 17
infiltration trench and level spreader, there will be no continuous conveyance that creates a
point source discharge off the Permittee's property or into waters of the State.
From this new level spreader, discharge will consist only of sheet flow for a distance of about
220 feet across a meadow and 50 feet through a wooded buffer into an intermittent stream.
The Permit does not require monitoring of sheet flow.
SDO-001 will be eliminated as a point source discharge before June 30, 2009.
6.f.2. Semi-annual analytical and qualitative monitoring is conducted at SDO.002 in accordance with
the Permit. The monitoring point is at metal weir installed in an earthen ditch downgradient
from two pairs of HDPE pipes that collect runoff from the northern portion of the facility.
613. Originally, SDO-003 was not considered an industrial outfall because only employee parking,
the parking of truck chassis awaiting tanker assembly, and finished tanker trucks were parked
within its drainage area. We thought this practice exempted the outfall as having no exposed
industrial activity. In the last year or so, other industrial activities such as scrap debris and
abandoned equipment storage have occurred within the SDO-003 drainage area.

Upon reviewing our files, we have determined that a letter requesting ROS was never
submitted. When our consultant was first hired in 2002, it was determined that samples would
be collected from both industrial outfalls SDO-001 and SDO-002 and that SDO-003 was non-
industrial. The ROS form now provided on the NCDWQ website will be submitted by May 1,
2009.
We will make every attempt to collect a valid sample during a representative rainfall event from
SDO-003 before June 30, 2009 unless ROS is granted sooner.
We will cease collecting samples at SDO-001 as this outfall will no longer be considered a
point source discharge.
7. We disagree with the second and third sentences in this paragraph. All of the semi-annual
inspections as required by the Permit have been performed by our consultant since the Permit
was issued November 1, 2007. Semi-annual inspections in compliance with the previous
Permit were also performed; these reports have been archived.
Employee training has not occurred every year, but a Permit & SWPPP compliance workshop
will be held on May 5, 2009. The SWPP Team has been assigned and the organizational
chart completed.
All site inspections, analytical monitoring, and qualitative monitoring have been documented.
There have been no significant spills or secondary containment releases requiring
documentation.
The SWPPP was last updated effective November 30, 2007 with minor modifications made in
April 2008. There have been no facility changes since then requiring an update.
Isometrics is committed to complying fully with NPDES General Permit NCG030033. We invite you to
re -inspect our facility later this year. We hope you will be please with our progress in addressing your
concerns. Please do not hesitate to call me or Mike Leffew if you have any questions.
Sincerely,
Isometrics, Inc.
H. Lee Hancock, President
cc: Jim Frei, SwSG
File

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3
ISOMETRICS, INC. N.0 Deat.o� RECEIVED
P. O. Box 660 APR 2 4 2M
Reidsville, NC 27323 Winston-Salem
il
Regional Qft1ce
Street Address: Phone: [phone]
1266 N. Scales St. 1-800-567-7510
Reidsville, NC 27323-0660 O Fax: [phone]
PH
www.isometrics-inc.com [e-mail]
April 23, 2009
Steve W. Tedder
Water Quality Regional Supervisor
NCDENR-DWQ
585 Waughtown St.
Winston-Salem NC 27107
RE: NOVO: NOV-2009-PC-0251
Isometrics Plant #1
NPDES General Permit NCG030033
Mr. Tedder:
We appreciate this opportunity to respond to your letter dated March 25, 2009. The following are our
responses to your findings.
3. Housekeeping will be improved. The owner has committed to removing 50% of the
accumulated abandoned equipment and scrap debris from the facility no later than December
31, 2009, and the remainder to be removed by March 31, 2010.
Please note that metal stock will continue to be stored on racks outdoors.
3.a. The 55-gallon drum containing spent absorbent has been removed. The absorbent is being
recycled and is currently in a new drum, inside the test facility. The old, rusted out drum has
been destroyed.
3.b. The floor of the tank test building will be cleaned and all spent absorbents will be removed by
May 31, 2009.
The broken CMU-block containment wall, which provides tertiary containment, will be repaired
by June 30, 2009. The Permit does not require containment for mobile tankers. This CMU-
block wall is provided as an extra spill containment measure.
The Permit does not specifically require secondary containment inspections. There have been
no controlled releases of accumulated rainwater — the tank test building has three walls and a
roof, and does not accumulate rainfall — thus there are no records documenting such releases.
The tank test building is inspected twice per year; there has never been evidence that fuel
leaks or spills exit this building.

7
3.c Sandblasting operations have ceased_
We will test the sand for toxic and hazardous characteristics by May 31, 2009. The sand will
be removed and disposed into an appropriate facility only if it is found to be toxic or hazardous;
otherwise we will stabilize it in place with topsoil, seeding, and mulch.
3.d. All drums and containers currently sitting in the yard will be removed by Safety-Kleen no later
than .tune 30, 2009.
Employees have been instructed to store all containers indoors or on the designated hazmat
containment pallet, and to maintain labels and other identifying marks on the containers.
This facility is a Conditionally Exempt Small Quantity Generator, applicable rules regarding the
storage of hazardous wastes are being followed.
3.e. An employee has been tasked to walk the facility grounds and to remove with a shovel all soil
with visible oil stains. This soil will be placed into a drum and removed along with the drams
identified in 3.d. This task commenced as of April 15, 2009 and will be completed by May 15,
2009.
V.,1. We disagree that the test structure be considered a significant pollution hazard: There is no
evidence of fuel spill or leak, no requirement exists for containment of mobile tanker and the
storage tank in the test structure is in secondary containment, see 3b. above. As to the outfall
SDO-001, we request that Mr. Boone identify the "mildly defined conveyance" to which he
refers, either by marking it on a site plan or returning to the facility and showing us the
conveyance.
312. Monthly monitoring in accordance with Tier Two commenced at SDO.002 on March 26, 2009.
The DMRs have been submitted to Central Files. The next monthly monitoring will occur
before April 30, 2009, should a representative rainfall event occur before then.
V-3. Only since 2006 has SDO-003 been considered an industrial outfall. Originally, this outfall
only collected runoff from the employee parking lot and the administrative wing of the main
manufacturing building. In early 2006, our consultant observed that water tank testing, truck
rinsing, finished truck parking was occurring within the SDO-003 drainage area. The submittal
of a letter requesting representative outfall status was overlooked. However, every ❑MR
submitted to NCDWQ since the Permit was re -issued in 2007 has indicated that SDO-003 is
represented by SDO-002.
Upon reviewing our tiles, we have determined that a letter requesting ROS was never
submitted. When our consultant was first hired in 2002, it was determined that SDO-001 was
not a point source discharge, and only SDO-002 discharged runoff from industrial activity
areas. The ROS form now provided on the NCDWQ website will ba submitted by May 1;
2009.
We will collect a valid sample during a representative rainfall event from SDO-003 before June
30, 2009 unless ROS is granted sooner.

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4. We disagree with the second and third sentences in this paragraph. All of the semi-annual
inspections as required by the Permit have been performed by our consultant since the Permit
was issued November 'I, 2007. Semi-annual inspections in compliance with the previous
Permit were also performed, these reports have been archived.
Employee training has not occurred every year, but a Permit & SWPPP compliance workshop
will be held on May 5, 2009. The SWPP Team has been assigned and the organizational
chart completed.
All site inspections, analytical monitoring, and qualitative monitoring have been documented.
There have been no significant spills or secondary containment releases requiring
documentation.
The SWPPP was last updated effective November 30, 2007. There have been no facility
changes since then requiring an update.
Isometrics is committed to complying fully with NPDES General Permit NCG030033. We invite you
to re -inspect our facility later this year. We hope you will be please with our progress in addressing
your concerns. Please do not hesitate to call me or Mike Leffew if you have any questions.
Sincerely,
Isometrics, Inc.
H. Lee Hancock, President
cc: Jim Frei, SwSG
File

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ISOMETRICS, INC. MC. Dept of ENR
P. 0. Box 660 !UN 1
Reidsville, NC 27323
WinetDrt•SEIQn1
RegionaV OMCe
Street Address: Phone: [phone]
e
1266 N. Scales St. 1-800-567-7510
Reidsville, NC 27323-0660 0 o Fax: [phone]
www.isometrics-inc_com
10 June 2009
Division of Water Quality
ATTN: Surface Water Protection Section
585 Waughtown Street
Winston-Salem, NC 27107
Subject: Representative Outfall Status
Dear Sir or Madam;
Enclosed please find Representative Outfall Status (ROS) Request Form for SDO-003 at
Isometrics, Inc. at 1266 N. Scales Street, Reidsville, NC, Certificate of Coverage
NCG030033.
Sincerely,
Michael Leffe
Engineering D pt.

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NCDENRr,r.w 'M' sue. M-A*__�s
Division of Water Quality / Surface Water Protection
National Pollutant Discharge Elimination System
REPRESENTATIVE OUTFALL STATUS (ROS)
REQUEST FORM
FOR AGENCY USE ONLY
Date Rcccivcd
Ycar
Munth Day
If a facility is required to sample multiple discharge locations with very similar stormwater discharges, the
permittee may petition the Director for Representative Outfall Status (ROS). DWO may grant
Representative Outfall Status if stormwater discharges from a single outfall are established as
representative of discharges from multiple outfalls. Approved ROS will reduce the number of outfalls
where analytical sampling requirements apply.
if Representative Ouffatl Status is granted, ALL ouffalls are still subject to the quail llye monitoring
requirements of the facility's permit. After ROS is granted, the facility must notify DWQ in writing if any
changes to the facility or its operations take place that would affect this status. The approval letter from
DWO must be kept on -site with the facility's Stormwater Pollution Prevention Plan,
For questions, please contact the DWO Regional Office for your area (see page 3).
(Please print or type)
1) Enter the permit number to which this ROS request applies:
Individual Permit (or) Certificate of Coverage
2) Facility Information:
Owner/Facility Name
Facility Contact i KE L& FFO' W
Street Address 17-& & IV . SG14 —S S
City 1>SV I L" State N G
County 20GK-1 fu N A_M.E-mail Address
Telephone No. a? & 341- Fax:
zip Code Z73 2y
3) List the representative outfall(s) information (attach additional sheets if necessary):
Outfall(s) 00Z is representative of Outfall(s)
Outfalls' drainage areas have the same or similar activities?
Outfalls' drainage areas contain the same or similar materials?
Outfalls have similar monitoring results?
Outfall(s)
r9O3
lz'yes
❑ No
❑ Yes
• Eo
ElYes
9/�No
is representative of Outfall(s)
Outfalls' drainage areas have the same or similar activities?
Outfalls' drainage areas contain the same or similar materials?
Outfalls have similar monitoring results?
Outtall(s)
is representative of Outfall(s)
Outfalls' drainage areas have the same or similar activities?
Outfalls' drainage areas contain the same or similar materials?
Outfalls have similar monitoring results?
❑ No data*
❑ Yes
❑ No
❑ Yes
❑ No
❑ Yes
1:1 No ❑ No data*
❑ Yes
❑ No
❑Yes
❑No
❑ Yes
❑ No ❑ No data*
*Non-compliance with analytical monitoring prior to this request may prevent ROS approval. Specific
circumstances will be considered by the Regional Office responsible for review.
Page 1 of 3
SWU-ROS-090508 Last revised 9/5/2008

ZI
Representative Outfall Status Request
4) Detailed explanation about why the outf ails above should be granted Representative Status:
(Or, attach a letter or narrative to discuss this information.) For example, describe how activities and/or
materials are.similar.
5) Certification:
North Carolina General Statute 143-215.6 B(i) provides that:
Any person who knowingly makes any false statement, representation, or certification in any application, record, report, plan, or other
document filed or required to be maintained under this Article or a rule implementing this Article: or who knowingly makes a false
statement of a material fact in a rulemaking proceeding or contested case under this Article; or who falsifies, tampers with, or knowingly
renders inaccurate any recording or monitoring device or method required to be operated or maintained under this Article or rules of the
(Environmental Management] Commission implementing this Article shall be guilty of a Ctass 2 misdemeanor which may include a fine
not to exceed ten thousand dollars ($10,000).
I hereby request Representative Outfall Status for my NPDES Permit. I understand that ALL outfalls are still
subject to the qualitative monitoring requirements of the permit. I must notify DWO in writing if any changes to
the facility or its operations take place after ROS is granted that may affect this status. If ROS no longer
applies, I understand 1 must resume analytical monitoring of all outfalls as specified in my NPDES permit.
I certify that I am familiar with the information contained in this application and that to the best of my
knowledge and belief such information is true, complete, nd accurate.
Printed Name of Person Signing: �! Lae Ejou(-K
Title:
(Signature of Applicant) (Date Signed)
Please note: This application for Representative Outfall Status is subject to approval by the
NCDE'NR Regional Office. The Regional Office may Inspect your facility for compliance with
the conditions of the permit prior to that approval.
Final Checklist for ROS Reauest
This application should include the following items:
© This completed form.
❑ Letter or narrative elaborating on the reasons why specified outfalls should be granted representative status,
unless all information can be included in question 4.
© Two (2) copies of a site map of the facility with the location of all outfalls clearly marked, including the
drainage areas, industrial activities, and raw materials/finished products within each drainage area.
❑ Summary of results from monitoring conducted at the outfalls listed in Question 3.
© Any other supporting documentation.
Page 2 of 3
swu-sos-090508 Last revised 9/5/2008

Representative Outfall Status Request
Mail the entire package to:
NC DENR Division of Water Quality
Surface Water Protection Section
at the appropriate Regional Office (See map and addresses below)
Notes
The submission of this document does not guarantee Representative Outfall Status (ROS) will be granted
as requested. Analytical monitoring as per your current permit must be continued, at all outfafls, until
written approval of this request is granted by DWO.
Non-compliance with analytical monitoring prior this request may prevent ROS approval. Specific
circumstances will be considered by the Regional Office responsible for review.
For questions, please contact the DWO Regional Office for your area.
Asheville Regional Office
2090 U.S. Highway 70
Swannanoa, NC 28778
Washington Regional Office
943 Washington Square Mall
Phone [phone]
Washington, NC 27889
FAX [phone]
Phone [phone]
Fayetteville Regional Office
FAX [phone]
Systel Building,
225 Greer? St., Suite 714
Wilmington Regional Office
Fayetteville, NC 28301-5094
127 Cardinal Drive Extension
Wilmington, NC 28405
Phone [phone]
FAX [phone]
Phone [phone]
FAX [phone]
Mooresville Regional Office
610 East Center Ave.
Winston-Salem Regional Office
Mooresville, NC 28115
585 Waughtown Street
Winston-Salem, NC 27107
Phone [phone]
Phone [phone]
FAX [phone]
Water Quality Main FAX [phone]
Raleigh Regional Office
Central Office
1628 Mail Service Center
1617 Mail Service Center
Raleigh, NC 27699-1628
Raleigh, NC 27699-1617
Phone [phone]
Phone [phone]
FAX [phone] -
FAX [phone]
Page 3 of 3
SWU-ROS-090508 Last revised 9/5/2008

'
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Attachment No. 1.
Item 4.
This Permittee has selected SDO-002 as its representative outfall for the following
reasons:
o It has the larger drainage area
o It has the more various industrial activities occurring within its drainage area.
o It has more exposed industrial activities within its drainage area.
SDO-003 drainage area is dominated by an employee parking lot and a portion of the
administrative offices from which runoff is not required to be monitored.
The two industrial activities occurring within the SDO-003 drainage area are:
o Pressure testing of water tanks mounted on trucks resulting in a discharge of non -
contaminated water.
o Parking of finished tanker trucks — a final product intended for outdoor use. This
item alone would not prevent the "No Exposure" exemption.
Under Item 3, we have indicated that these two drainage areas DO NOT contain same or
similar materials because SDO-003 contains no materials.
In our opinion, no pollutants at a level that would negatively impact waters of the state
would be detected in the SDO-003 discharge.
Prior to 2002, this Permittee had considered an area northwest of Bldg 4 as a potential
monitoring point. This Permittee installed a metal weir and designated it as SDO-001.
When their current consultant was hired in early 2002, it was decided that the weir
location was not in an area of concentrated flow and thus was eliminated. There is no
`.point source discharge" of stormwater northwest or west of Bldg. 4.
Sometime in 2005, the Permittee began the aforementioned industrial activities within
SDO-003. Prior to this date, this outfall. only discharged runoff from the employee
parking lot and a portion of the admin building, and was not considered an industrial
outfall. An ROS form was not submitted because no such form existed on the
NCDENR/DWQ website until September 2008. Since January 2008, this Permittee has
indicated to the NCDENR/DWQ that SDO-003 is represented by SDO-002 by notation
on the submitted DMRs; no notice of rejection has been forthcoming from the DWQ
Stormwater Permitting Unit.

Monitoring Data
Analytical monitoring has been performed only at SDO-002. Results since 2007 are
indicated in the table:
SDO-002 Anal tical Results
DATE
pH
O & G
TSS
Total Pb
Rainfall
04/15/07
7.23
6.6
230
< 0.005
1.63"
09/06/08
7.48
27.0
759
< 0.005
1.50"
12/10/08
6.72
12.7
832
0.007
2.12"
March 2009
Sediment trap installed below SDO-002 collection point.
03/26/09
6.47
17.7
147
< 0.005
0.26"
04/20/09
6.72
8.9
95
0.006
0.43"
05104/09
6.69
6.5
35.6
< 0.005
0.24"
Qualitative Monitoring has been performed at both outfalls since June 2006. Results
since 2006 are indicated in the table:
Qualitative Results
Spr 06
Fall 06
Spr 07 1
Fall 07
Spr 08
Fall 08
Spr 09
Fall 09
002
003
002
003
002
003
002
003
002
003
002
003
002
003
002
003
Color
Dark
Tan
V.
Lt.
Gray
Dark
Tan
V.
Lt.
Gray
Dark
Tan
Lt.
Tan/
Gray
Dark
Tan
Lt.
Tan
Dark
Tan/
Gray
V.
Lt.
Tan
Lt. .
Gray
V.
Lt.
Tan
Odor
N
N
N
N
N
N
N
N
N
N
N
N
Clarity
5
3
7
4
5
3
7
3
8
3
3
2
F. Solids
2
1
2
1
2
1
2
1
2
1
1
1
S. Solids
4
3
6
3
4
3
6
2
6
2
3
1
Foam
N
N
N
N
N
N
N
N
N
N
N
N
Oil
Sheen
N
N
N
N
N
N
N
N
Y
N
Y
N
Erosion
Y
N
Y
N
N
N
Deposits
Y
N
Y
N
Y
N
Other
Sand
N
Sand
N
Sand
N
Sand
N
Sand
N
N
N
Under Item 3, we have indicated that the outfalls DO NOT have similar monitoring
results as SDO-003 is much cleaner than SDO-002.
Based on the information presented above, this Permittee believes there is nothing to be
gained by collecting and analyzing samples at SDO-003.

VGODED
a
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p — �
Ljo
In
M 349
4! .3
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H 4-
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g
SDO-001 ELIMINATED.
RUNOFF DISSIPATES AS
SHEETFLOW.
ISTbRAGE
TRAIILER
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VET-VEATFER $VALE I
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ADMIN OFFICES
• PAVEMENT r
AST-4 PRODUCTION BLDG ;
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t.\ ❑' /I�
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10' 4
SDO-002 —/
DA = 62,956 sf
Imp = 60%
STORAGE RACKS
WOODED
GRAVEL
.PALLETS S SCRAP
PALLETS L SCRAP
GRASS
v�
GATE
SDO-003
DA = 23,630 sf
Imp = 90 %
Bullding Legend
1. Production & Fabrication
2. Plasma Cutting
3. Paint Shed
4. Fuel Tanker Pressure Test
5. Warehouse
6. Warehouse
7. Administrative ❑ffices
8. Haz Waste Shed
0 30 60 90 Wo too
MAP 2 - FACILITY SITE PLAN
Developed for
Isometrics, Inc. (Plant #1)
1266 N. Scales St.
NPDFS STORMWATEA PERMf!• NM NCG030033
Map Date: Nov 30 2007 (rev 061011") Drava W. Jim F1m
Map Scale: See liar Scale Cbe&d Hr. JW Frd
SwSG stormswater SerAcw Grow. LLC RatAdr. NC pl!) K1.91S

WOODED
M
d
L
0
$ N
W
= U
o a 41
w o
W 0- M
z a
fl
AA U i'
0 a
U y
N 4'
= a
L
0
SDO-001 ELIMINATED.
RUNOFF DISSIPATES AS
SHEETFLOW,
ABANDONED TANK
AST -I .
STORAGE 4
.TRAILER AST-Z •
I �__ I
GATE S
GRAVEL
STORAGE RACKS
WOODED
' ' ... - - - .
GRASS ~ ~ � ~ ~ AST-4 ,\ ... - .. - - • • • • PRODUCTION BLDG ...
\ AST-3 ;
ED
ABANDONED 1 \
SAND BLAST PIT I I AIR COMPRESSOR DUMPSTER
I I
. I `
GRASS I
SCRAP METAL BINS ;
.I
:D I SCRAP METAL BIN GRAVEL
❑ METAL STOCK STORAGE
� I �
PALLETS &SCRAP
I I GRAVEL I !
1 I
PALLETS L SCRAP
GRASS /
S DO-00'' GRAVEL —�
4
DA = 62,956 sf
Imp = 60%
.A.
�10
WET -WEATHER SWALE I
I
5
1
r WOODED
ADMIN OFFICES /•
/
I ! )
PAVEMENT
TANK PRESSURE / ,• �
TEST AREA !
Q / Q vJ
R3; l ".1
/ I
!
/
/
GATE
SDO-003
DA = 23,630 sf
Imp =90%
Building Legend
1. Production & Fabrication
2. Plasma Cutting
3. Paint Shed
4. Fuel Tanker Pressure Test
5. Warehouse
6. Warehouse
7. Administrative Offices
8. Haz Waste Shed
MMM,9=—''Illlllllllllll ANSI!
0 30 60 90 120 too
MAP 2 - FACILFFY SITE PLAN
Developed for
Isometrics, Inc. (Plant #1)
1266 N. Scales St.
NPD"- STOR.MWAI'ER PFR-%trr \O. \CG030033
-Map ate- Nov 30 2007 (rev 06/01109) Drawn BY Jba Frei
Hap Scidet See Bar Scale Checked By. Jbn Frei
SWSG S1orowsler Serricea Group, LLC Rakit;h, NC (919)661-"414

01511/-V9i
,
t %8
NC®ENR
Carolina Department of Environment and Natural Resources
Division of Water Quality
Coleen H. Sullins Dee Freeman
Director Secretary
North
Beverly Eaves Perdue
Governor
25 March 2009
Isometrics, Inc.
Attention: Mr. Lee Hancock, President
P.O. Box 660
Reidsville, NC 27320
SUBJECT: Compliance Evaluation Inspections & Notices of Violation
General NPDES Stormwater Discharge Permit: NCG030033
Isorimetrics Reidsville Plant #1
NOV#: NOV-2009-PC-0251 &
General NPDES Stormwater Discharge Permit: NCGO30034
Isometrics Reidsville Plant #2
NOV#: NOV-2009-PC-0252
Isometrics, Inc.
Rockingham County
Dear Mr. Hancock:
Mr. Ron Boone of the Winston-Salem Regional Office (WSRO) of the NC Division of Water Quality (DWQ or the
Division) conducted compliance evaluation inspections (CEI) of Isometric's Reidsville plants #1 and #2 on 17
March 2009. The assistance and cooperation of Mike Leffew of Isometrics and James Frei of Stormwater
Services Group, were greatly appreciated. , Inspection findings for both facilities are summarized below and
inspection reports are attached for your records. It is noted that James Frei is a consultant commissioned by
Isometrics to develop their Stormwater Pollution Prevention Plan (SP3).
Isometrics, Inc. Reidsville Plant #1, 1266 North Scales Street, NCG030033
Site & Monitoring Review
2. This, facility is located at 1266 North Scales Street, in Reidsville, Rockingham County, North Carolina.
Stormwater related to industrial activity is discharged from the site to an unnamed tributary to Wolf Island Creek,
which is currently classified as Class C waters in the Roanoke River basin. The facility uses aluminum and
stainless steel to manufacture tanks for fuel and water tanker trucks and then assembles and paints the trucks on
site.
3. General housekeeping at this facility is very poor. The entire yard, as well as some of the outlying areas, which
according to Mr. Leffew don't directly relate to company operations, but rather to the secondary activities of some
of the company's employees, are littered with everything from truck parts, equipment, general solid waste and the
like, to 55-gallon drums, cardboard boxes, pallets, spilled fluids, etc. The list below reflects some of the specific
items noted by Mr. Boone during the inspection:
There is an open -top 55-gallon drum located just outside the tank test structure. The drum is used to
store spent absorbent material that is used inside the tank test structure. The bottom of the drum is
rusted out and the absorbent, along with its absorbed constituents, is leaking onto the ground. Absorbed
material is undoubtedly leeching into the soil from the drum.
b. The tank test structure itself is a significant pollution hazard. This is a covered structure with two
sidewal[s and a rear wall. The front is open and the trucks are pulled into the structure where the tanks
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 One
Phone: [phone] i FAX: [phone] Customer Service:1-877-623-6748 North Carolina
Internet: www.ncwaterquality.org Amorally
An Equal Opportunity 1 Affirmative Action Employer

Isometrics, Inc.
Attention: Mr. Lee Hancock, President
Permit: NCG030033, NOV-2009-PC-0251 &
Permit: NCG030034, NOV-2009-PC-0252
25 March 2009
Page 2 of 5
are leak tested. There is a large fuel tank under the shelter and within a secondary containment. A
spider web of pumps, hoses and piping is used to pump the fuel into the tanker trucks. There was a
significant amount of spilled fuel in the northwest corner of the containment at the time of the inspection
and a significant amount of fuel covered a large amount of the floor outside the containment. Handling of
the fuel(s) appears haphazard and there are no records of secondary containment inspections as
required by Part II, Section A, Paragraph 2b, of the permit. Furthermore, although the structure itself has
a containment berm, the berm does not surround the entire structure and there are many voids between
the walls and floor of the structure, providing an easy way for a spillage to escape the containment
devices of the structure. .
c. Sandblasting operations were or are being performed outside, on the west side of the plant. According to
Mr. Leffew, all sandblasting operations were transferred to the Hwy 87 plant (plant #2). However, the
spent sand was left on the ground at the site and has actually been pushed up and combined with riprap
to form a stormwater diversion/filter, according to Mr. Frei. All sand previously used for sandblasting
operations needs to be recovered and disposed of properly. The sand may be significantly contaminated
with metals and paint residue, which over time will leech out into the ground, groundwater and surface
water. The NC Division of Waste Management and Division of Air Quality have both been notified of this
finding.
d. There are a large number of 55-g0on drums, 5-gallon buckets and other miscellaneous size containers
scattered throughout the entire plant and yard. Many of the containers are not properly labeled, sealed,
etc. According to the SP3, the site does have a hazardous storage facility. All such containers must be
identified, their contents identified, the containers properly labeled and sealed, and the containers and
their contents stored, used or disposed of properly.
e. There were several areas throughout the yard where materials had been spilled at some time and not
properly cleaned up. The exact'type of materials is unknown but they are believed to be petroleum
derivatives. The SP3 does include a spill plan.
Formerly, the site had three Stormwater Discharge Outfalls (SDO), as specified below:
1. 001 was at the northwest corner of the site. Mr_ Frei stated during the inspection that he
eliminated 001 as a point source discharge (PSD) from the site in 2001 or 2002 because he
determined that discharge from the drainage area is sheetflow. He therefore discontinued
qualitative and analytical monitoring at SDO 001. Upon examination, Mr. Boone determined that
the stormwater draining from this area does have a mildly defined conveyance that begins near
the rear northwest corner of the tank test structure and then dissipates out onto a dirt road and
into a sloped forested area before coming to the receiving stream. The distance form the tank
test structure to the stream is approximately 250 feet. Because the tank test structure is located
within this drainage area and in its current condition is considered a significant pollution hazard,
we require that SDO 001 be monitored both analytically and quantitatively at or near the
northwest corner of the tank test structure until the pollution hazards in this area are remedied.
Please begin analytical and qualitative monitoring immediately at this SDO in accordance with
permit conditions.
002 is located near the southwest comer of the site. Analytical monitoring during late 2008
generated two consecutive exceedences of the Total Suspended Solids (TSS) benchmark value,
requiring a tier two response in accordance with Part 11, Section 6, of the permit. However,
analytical monitoring is not being conducted monthly and not all requirements and deadlines of
the tier two response have been met. This must be addressed immediately. Mr. Frei and Mr.
Leffew stated that, as part of the tier two response, a sediment basin is being constructed at SDO
002, in hopes of reducing TSS concentrations in the discharge. The basin is still not yet
complete. Mr. Frei stated that monthly analytical monitoring was placed on hold until the basin
was completed. You must immediately institute monthly monitoring at SOO 002 until three
consecutive samples yield results below the benchmark value, regardless of other tier two
response efforts, such as the sediment basin. Please review the tiered requirements in

Isometrics, Inc.
Attention: Mr. Lee Hancock, President
Permit: NCG030033, NOV-2009-PC-0251 8
Permit: NCG030034, NOV-2009-PC-0252
25 March 2009
Page 3 of 5
Part II, Section 13, of the permit in detail. Failure to conduct the required tiered response
measures is a violation of the permit.
Additionally, Mr. Boone's initial assessment of the basin being constructed is that the basin is not
large enough for the area being served. Isometrics may need to have the basin
professionally designed and built by an engineer if TSS concentrations are not. sufficiently
reduced.
3. 003 is at the northeast corner of the site. No issues were noted with this SDO, except for the fact
that analytical monitoring is not being conducted at this SDO, as discussed further below.
4. There is some stormwater runoff from the southeast corner of the site but Mr. Boone agrees with
Mr. Frei that this is sheetflow.
Mr. Frei also stated during the inspection that Isometrics had been granted Representative Outfall Status
(ROS) at some point in the past, although neither he nor Mr. Leffew had any documentation from the
Division showing this. Furthermore, there is no documentation in our files showing that Isometrics has
ROS for this facility. According to Mr. Frei, he submitted correspondence to the Division's Central Office
in Raleigh, requesting ROS for this Isometrics facility. Although a reply to that correspondence was
apparently never received, it was assumed that Isometrics was thereby granted ROS status. As a result,
qualitative monitoring is currently being performed at SDOs 002 and 003 and analytical monitoring is
being conducted at only SDO 002. This must be corrected immediately. You must begin the
following monitoring regime immediately, and until further notice from this office:
SDO 001: Immediately begin analytical and qualitative monitoring at.the location specified above in
paragraph 3(f)(1) in accordance with the frequency requirements of the permit.
SDO 002: Immediately begin monthly analytical monitoring,at this.SDO due to the exceedences of
permit benchmarks for TSS, and continue qualitative monitoring at this SDO. Note again
that monthly analytical monitoring must continue until the facility has three consecutive
samples below the TSS benchmark.
SDO 003: Immediately begin analytical and qualitative monitoring in accordance with the frequency
requirements of the permit.
Please note that Isometrics has not been granted ROS status for this site.
DOCUMENTATION REVIEW
4. Review of the SP3 shows it to be acceptable and that it includes all the required components. However, the SP3
has not been implemented. Very few of the required inspections, training, documentations, updates, etc. have
been accomplished as required. It is noted that Mr. Frei has been conducting biannual inspections of the site.
Results of his inspections have been given to Isometrics, but very few of the things that he has noted in his
reports have been taken care of.
Isometrics, Inc. Reidsville Plant #2, 7537 NC Hwy 87, NCG030034
Site & Monitoring Review
This facility is located at 7537 NC Hwy 87 North, in Reidsville, Rockingham County, North Carolina. Stormwater
related to industrial activity is discharged from the site to an unnamed tributary to Wolf Island Creek, which is
currently classified as Class C waters in the Roanoke River basin. The facility uses aluminum and stainless steel
to manufacture tanks for fuel and water tanker trucks and then assembles and paints the trucks on site.

Isometrics, inc.
Attention: Mr. Lee Hancock, President
Permit: NCG030033, NOV-2009-PC-0251 &
Permit: NCGo30034, NOV-2009-PC-0252
25 March 2009
Page 4 of 5
0. General housekeeping at this facility is very poor. The entire yard is littered with everything from truck parts,
equipment, general solid waste and the like, to 55-gallon drums, cardboard boxes, pallets, spilled fluids, etc. The
list below reflects some of the specific items noted by Mr. Boone during the inspection:
There were several open -top containers located throughout the site at the time of the inspection, the
exact contents of which were unknown. All such containers must be identified, their contents identified,
the containers properly labeled and sealed, and the containers and their contents stored, used or
disposed of properly.
b. The vehicle undercoating structure has a roof but no sidewalls. It has a recessed pit that the painters
enter so they can undercoat the bottom of the finished vehicles. There was significant staining of the
concrete both inside and outside the pit. There is no drain in the pit and stormwater does get into it at
times. The pit is simply pumped out onto the ground as needed but no inspections are done to determine
if the water is contaminated prior to being pumped out. Although this is not technically a secondary
containment (SC), Isometrics should inspect the water in this pit for contaminants before pumping it out,
just as they would an SC for an above ground storage tank, if the water is found to be contaminated it
should be retained and disposed of properly. Failure to do so may result in benchmark exceedences at
the SDOs and/or surface and/or groundwater contamination.
C. Sandblasting operations are being conducted in the open field on the east side of the plant. The spent
sand is left on the ground at the site. It is unknown how large/long an accumulation of the sand exists at
the site. In addition, the area around the sandblasting operation was littered with all kinds of
miscellaneous equipment, solid waste and spilled fluids of a petroleum nature. All spent sand needs to
be recovered and disposed of properly. The sand may be significantly contaminated with metals as well
as paint residue, which over time will leech out into the ground, groundwater and surface water. The NC
Divisions of Waste Management and Air Quality have both been notified of this finding. Additionally, all
spilled fluids must be cleaned up and disposed of properly in accordance with the permit and the facility's
SP3. All solid waste should also be cleaned up and disposed of properly.
d. The drum storage area is covered and does have SC. There were approximately fifteen 55-gallon drums,
several miscellaneous size containers and a fuel storage tank, which is approximately 250 gallons in
capacity, within the containment at the time of the inspection. SC inspections are not being conducted
and documented as required. Also, whether the volume of the SC meets permit conditions is
questionable and should be reviewed. This area, also needs significant housekeeping. There were
several open containers in and around the area that need to be identified, stored, used and/or disposed of
properly.
e. There were several other areas throughout the yard where other unidentified materials had been spilled
at some time and not properly cleaned up. The exact type of materials is unknown. All such spills should
be cleaned up and disposed of properly in accordance with the permit and the SP3.
Isometrics and Mr. Frei are currently monitoring three SDOs at this site, as specified below:
1. 001 is 'at the northeast corner of the site and both analytical and qualitative monitoring are being
conducted at this SDO. I No immediate problems were noted at the SDO but some drainage from
the sandblasting operations and areas that require significant housekeeping are draining to this
SDO.
2. 002 is located on the north side of the site. It drains the northern part of the -site, which includes
the drum storage area and the undercoating facility. Both analytical and qualitative monitoring
are being conducted at this SDO. No immediate problems were noted at the SDO.
3. 003 is 4ocated on the west side of the site, nearest the southwest corner. Only qualitative
monitoring is currently being conducted at this SDO. No immediate problems were noted at the
SDO.

Isometrics, Inc.
Attention: Mr. Lee Hancock, President
Permit: NCG030033, NOV-2009-PC-0251 &
Permit: NCG030034, NOV-2009-PC-0252
25 March 2009
Page 5 of 5
Mr. Frei also stated during this inspection that Isometrics had been granted Representative Outfall Status
(ROS) at some point in the past for this site as well, although neither he nor Mr. Leffew had any
documentation from the Division showing this. Furthermore, there is no documentation in our files
showing that Isometrics has ROS for this facility. According to Mr. Frei, he submitted correspondence to
the Division's Central Office in Raleigh, requesting ROS for this Isometrics facility. Although a reply to
that correspondence was apparently never received, it was assumed that Isometrics was thereby granted
ROS status. As a result, qualitative monitoring is currently being performed at SDOs 001, 002 and 003
and analytical monitoring is being conducted at SDOs 002 and 003 only. - This must be corrected
immediately. You must immediately begin both analytical and qualitative monitoring at all three
SDOs in accordance with the frequency requirements of the permit.
Please note that Isometrics has not been granted ROS status for this site.
DOCUMENTATION REVIEW
Review of the SP3 shows it to be acceptable and that it includes all the required components. However, the SP3
has not been implemented. Very few of the required inspections, training, documentations, updates, etc. have
been accomplished as required. It is noted that Mr. Frei has been conducting biannual inspections of the site.
Results of his inspections have been given to Isometrics, but very few of the things that he has noted in his
reports have been taken care of.
You -are reminded that violations of the NCG030000 general permit are subject to civil penalty assessments not to
exceed $25,000 per day, per violation. Please replyto this letter in writing within 30 days of receiving it. Your
reply should include a corrective action with implementation schedule for. all violations/deficiencies noted above in
paragraphs 3, 4, 6 and 7.
9. If you have any questions regarding the inspection or this letter, please do not hesitate to contact Mr. Boone or
me at [phone].
Sincerely,
t"01
Steve W. Tedder
Water Quality Regional Supervisor
Winston-Salem Region
Division of Water Quality
Attachments:
B1MS Inspection Checklist
CC: Central-Files-wl_attachments
IWSRO - SWP Files wl attachments
Storm watF_r Permitting UFit wl atta_cchments
NC Division of Waste Management, Hazardous Waste Compliance, WSRO
Attn: Jenny Patterson
NC Division of Air Quality, WSRO
Attn: Brent Rockett
Stormwater Services Group
Attn: James D. Frei
8916 Oregon Inlet Ct.
Raleigh, NC 27603

Compliance Inspection Report
Permit: NCG030033 Effective: 11/01/07 Expiration: 10/31/12 Owner: Isometrics Inc
SOC: Effective: Expiration: Facility: Isometrics Incorporated -Plant 1
County: Rockingham 1266 N Scales St
Region: Winston-Salem
Reidsville NC 27320
Contact Person: Lee Hancock Title: Phone: [phone]
Directions to Facility:
System Classifications:
Primary ORC: Certification: Phone:
Secondary ORC(s):
On -Site Representative(s):
24 hour contact name Mike Leffew Phone: [phone]
On -site representative Mike Leffew Phone: [phone]
Related Permits:
Inspection Date: 03117/2009 Entry Time: 09:00 AM Exit Time: 10:30 AM
Primary Inspector: Ron Boone Phone: [phone]
Secondary Inspector(s): G , L� 3� ` f Ext.2202
/
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Metal Fabrication Stormwater Discharge COC
Facility Status: ❑ Compliant - ■ Not Compliant
Question Areas:
® Storm Water
(See attachment summary)
0
Page: 1

Permit: NCG030033 Owner -Facility: Isometrics Inc
Inspection pate: 03/17/2009 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Please refer to attached inspection summary fetter.
Page: 2

Permit: NCG030033 Owner -Facility: Isometrics Inc
Inspection Date: 03/17/2009 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?
®❑
Q
❑
# Does the Plan include a General Location (USGS) map?
®
n
n
❑
# Does the Plan include a "Narrative Description of Practices"?
®❑
❑
❑
# Does the Plan include a detailed site map including outfall locations and drainage areas?
®
n
00
# Does the Plan include a list of significant spills occurring during the past 3 years?
®
❑
❑
❑
# Has the facility evaluated feasible alternatives to current practices?
®❑
0.0
# Does the facility provide all necessary secondary containment?
®
❑
Q
n
# Does the Plan include a BMP summary?
a
❑
00
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
■
❑
❑
❑
# Does the Plan include a Preventative Maintenance and -Good Housekeeping Plan?
®
❑
Q
n
# Does the facility provide and document Employee Training?
D
■
❑
n
# Does the Plan include a list of Responsible Party(s)?
it
®
❑
C
# Is the Plan reviewed and updated annually?
®❑
❑:
❑
# Does the Plan include a Stormwater Facility Inspection Program?
®
n
❑
❑
Has the Stormwater Pollution Prevention Plan been implemented?
❑
®❑
❑
Comment: Facility has a good SP3 but it has not been implemented sufficiently.
Please refer to the attached inspection summary letter.
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi-annually? ® ❑ ❑ 0
Comment: Facility has a good SP3 but it has not been implemented sufficiently.
Please refer to the attached inspection summary letter.
Analytical Monitoring Yes No NA NE
Has the facility conducted its Analytical monitoring? D ®❑ fl
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ Q ® ❑
Comment: Facility has a good SP3 but it has not been implemented sufficiently.
Please refer to the attached inspection summary letter.
Permit and Outfalls Yes No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? ®❑ Q 0
# Were all outfalls observed during the inspection? ® 0. n n
# If the facility has representative outfall status, is it properly documented by the Division? n Q in 0
# Has the facility evaluated all illicit (non Stormwater) discharges? ®❑ 0 ❑
Page: 3

Permit: NCG030033 Owner - Facility: Isometrics Inc
Inspection Date: 03/1712009 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Comment: ' Facility has a good SP3 but it has not been implemented sufficiently.
Please refer to the attached inspection summary letter.
Page: 4

Compliance Inspection Report
Permit: NCG030034 Effective: 11/01/07 Expiration: 10/31/12 Owner: isometrics Inc
SOC: Effective: Expiration: Facility: Isometrics Incorporated -Plant 2
County: Rockingham 7537 Hwy 87 N
Region: Winston-Salem
Contact Person: Lee Hancock
Directions to.Facility:
System Classifications:
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
24 hour contact name Mike Leffew
On -site representative Mike Leffew
Related Permits:
Reidsville NC 27320
Title: Phone: [phone]
Certification: Phone:
Phone: [phone]
Phone: [phone]
Inspection Date: 03/1712009 Entry. Time: 10:30 AM Exit Time: 12:00 PM
Primary Inspector: Ron Boone % 1. Phone: [phone]
Secondary Inspector(s): `f �/ 7 Ext.2202
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Metal Fabrication Stormwater Discharge COC
Facility Status: Q Compliant ■ Not Compliant
Question Areas:
® Storm Water
(See attachment summary)
Page' 1

Permit: NCG030034 Owner - Facility: Isometrics Inc
Inspection Date: 03/17/2009 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Inspection Summary:
Please refer to attached inspection summary letter.
Page: 2

Permit: NCGO30034 Owner • Facility: Isometrics Inc
Inspection Date: 0311712009 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
# Does the Plan include a General Location (USGS) map?
■
❑
❑
❑
# Does the Plan include a "Narrative Description of Practices"?
■
❑
❑
n
# Does the Plan include a detailed site map including outfall locations and drainage areas?
❑
■
❑
❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
■
❑
❑
❑
# Has the facility evaluated feasible alternatives to current practices?
■
❑
❑
❑
# Does_the facility provide all necessary secondary containment?
■
n
n
n
# Does the Plan include a BMP summary?
■
❑
Q
n
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
■
n
❑
❑
# Does the Plan inciude a Preventative Maintenance and Good Housekeeping Plan?
■
❑
❑
❑
# Does the facility provide and document Employee Training?
❑
■
❑
Cl
# Does the Plan include a list of Responsible Party(s)?
❑
■
0
n
# Is the Plan reviewed and updated annually?
®
n
❑
❑
# Does the Plan include a Stormwater Facility Inspection Program?
®❑
❑
fl
Has the Stormwater Pollution Prevention Plan been implemented?
n
■
❑
❑
Comment: Facility has a good SP3 but it has not been implemented sufficiently.
Please refer to attached inspection summary letter.
Qualitative Monitorin
Yes No
NA
NE
Has the facility conducted its Qualitative Monitoring semi-annually?
®❑
❑
❑
Comment: Facility has a good SP3 but it has not been implemented sufficiently.
Please refer to attached inspection summary letter.
Analytical Monitoring
Yes No
NA
NE
Has the facility conducted its Analytical monitoring?
❑ ■
❑
❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas?
❑ ❑
®
❑
Comment: Facility has a good SP3 but it has not been implemented sufficiently,
Please refer to attached inspection summary letter.
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?
© n
n
n
# If the facility has representative outfall status, is it properly documented by the Division?
n ❑
®
❑
# Has the facility evaluated all illicit (non stormwater) discharges?
® n
n
n
Page: 3

Permit: NCG030034 Owner - Facility: Isometrics Inc
Inspection Date: 03/17/2009 Inspection Type: Compliance Evaluation Reason for Visit: Routine
Comment: Facility has a good SP3 but it has not been implemented sufficiently.
Please refer to attached inspection summary letter.
Page: 4

o�0F w A
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
LEE HANCOCK
ISOMETRICS INCORPORATED -PLANT 2
BOX 660
REIDSVILLE. NC 27323
Dear Permittee:
Alan W. Klimek, P.E., Director
Division of Water Quality
August 23. 2002
Subject: NPDES Stormwater Permit Renewal -
ISOMETRICS INCORPORATED -PLANT 2
COC Number NCG030034
Rockingham County
In response to your renewal application for continued coverage under general permit NCG030000. the Division of
Water Quality (DWQ) is forwarding herewith the reissued stormwater general permit. This permit is reissued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between the state of North Carolina and the U.S. Environmental Protection Agency, dated December 6, 1983.
The following information is included with your permit package:
* A new Certificate of Coverage
* A copy of General Stormwater Permit NCG030000
* A copy of the Analytical Monitoring Form (I)MR)
* A copy of a Technical Bulletin for the general permit
Your coverage under this general permit is not transferable except after notice to DWQ. The Division may require
modification or revocation and reissuance of the Certificate of Coverage. This permit does not affect the legal
requirements to obtain other permits which may be required by DENR or relieve the permittee from responsibility
for compliance with any other applicable federal, state, or local law, rule, standard, ordinance. order, judgment, or
decree.
If you have any questions regarding this permit package please contact Bill Mills of the Central Office Stormwater
and General Permits Unit at [phone], ext. 548
Sincerely,
Bradley Bennett, Supervisor
Stormwater and General Permits Unit
cc: Central1:Iles
Stormwater & General Permits Unit Files
Winston-Salem Regional Office
SOA
NCDENR
N. C. Division of Water Quality 1617 Mail Service Center • Raleigh, NC 27699-1617 [phone] Customer Service
1- 800-623-7748

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG030000
CERTIFICATE OF COVERAGE No. NCG030034
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
ISOMETRICS INC
is hereby authorized to discharge stormwater from a facility located at
ISOMETRICS INCORPORATED -PLANT 2
7537 HWY 87 NORTH
REIDS V ILLE
ROCKINGHAM COUNTY
to receiving waters designated as a U'f to Wolf Island Creek, a class C stream, in the Roanoke River Basin in
accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I. I1, III,
IV, V, and VI of General Permit No. NCG030000 as attached.
This certificate of coverage shall become effective September 1, 2002.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day August 23, 2002.
for Alan W. Klimek. P.E.. Director
Division of Water Quality
By Authority of the Environmental Management Commission

\NAr�R��
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
DENNIS M BRACY
ISOMETRICS INCORPORATED -PLANT 2
BOX 660
REIDSVILLE, NC 27320
Dear Perrnittee:
Gregory J. Thorpe, Ph.D.
Acting Director
Division of Water Quality
December 27, 2001
Subject: NPDES Stormwater Permit Renewal
ISOMETRICS INCORPORATED -PLANT 2
COC Number NCG030034
Rockingham County
Your facility is currently covered for storrnwater discharge under General Permit NCG030000. 'Phis permit expires
on August 31. 2002. The Division staff is currently in the process of rewriting this permit and is scheduled to have
the permit reissued by late surnmer of 2002. Once the permit is reissued, your facility would be eligible for
continued coverage under the reissued permit.
In order to assure your continued coverage under the general permit, you must apply to the Division of Water
Quality (DWQ) for renewal of your permit coverage- To make this renewal process easier, we are informing you in
advance that your permit will be expiring. Enclosed you will find a General Permit Coverage Renewal
Application Form. The application must be completed and returned by March 4, 2002 in order to assure continued
coverage under the general permit.
Failure to request renewal within this time period may result in a civil assessment of at least $250.00. Larger
penalties may be.assessed depending on the delinquency of the request. Discharge of storrnwater from your facility
without coverage under a valid stormwate.r NPDES permit would constitute a violation of NCGS 143-215.1 and
could result in assessments of civil penalties of up to $10,000 per day.
Please note that recent federal legislation has extended the "no exposure exclusion" to all operators of industrial
facilities in any of the I 1 categories of "storm water discharges associated with industrial activity," (except
construction activities). If you feel your facility can certify a condition of "no exposure", i.e. the facilty industrial
materials and operations are not exposed to storrnwater, you can apply for the no exposure exclusion. For additional
information contact the Central Office Stormwater Staff member listed below or check the Stormwater & General
Permits Unit Web Site at http://h2o.cnr.state..nc.us/su/stormwater.htnil
If the subject stormwater discharge to waters of the slate has been terminated, please complete the enclosed
Rescission Request Form. Mailing instructions are listed on the bottom of the form. You will he notified when the
rescission process has been completed.
If you have any cluestions regarding the permit renewal procedures please contact Corey Basinger of the
Winston-Salem Regional Off -ice at 336-771-4600 or Bill Mills of the Central Office Stormwater Unit at (919)
73.1-5083, ext. 548
Sincerely, II
so
Bradley Bennett Supervisor
Stormwater and General Permits Unit
cc: Central Files
Winston-Salem Regional Office
Ja
NCDENR
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 [phone] Customer Service
1-800-623-7748

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
October 1, 1997
DENNIS M BRACY
ISOMETRICS INC
BOX 660
REIDSVILLE, NC 27320
ALNP�qAl
'din V 0
E3EHNR
Subject: Reissued Stormwater General Permit for Certificate of Coverage No, NCG030034
Rockingham County
Dear Permittee:
In response to your renewal application for continued coverage under the subject permit, the Division
of Water Quality (DWQ) is forwarding herewith the reissued stormwater general permit. This permit
is reissued pursuant to the requirements of North Carolina General Statute 143-215 .1 and the
Memorandum of Agreement between North Carolina and the US Environmental Protection agency
dated December 6, 1983.
The following information is included with your permit package:
■ A copy of the stormwater general permit.
■ A Stormwater Pollution Prevention Plan Certification Form. This form certifies that you have
developed and implemented the Stormwater Pollution Prevention Plan (SPPP) required in your
permit. This form must be completed and returned to the Division within 30 days of receipt of
this letter. DO NOT send the SPPP with the signed form.
■ Five copies of Analytical Monitoring forms.
■ Five copies of Qualitative Monitoring forms.
Q A copy of a Technical Bulletin on the stormwater program with outlines program components
and addresses frequently asked questions.
■ A corrected Certificate of Coverage if you indicated a name or address change on the Renewal
Form returned to the Division.
Your certificate of coverage is not transferable except after notice to DWQ. The Division of Water
Quality may require modification or revocation and reissuance of the certificate of coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by
DWQ or permits required by the Division of Land Resources, Division of Air Quality, Coastal Area
Management Act or any other Federal or Local governmental permits that may be required.
If you have any questions concerning this permit or other attached documents, please contact the
Stormwater Group at telephone number [phone]
Sincerely,
524,IL '_
for A. Preston Howard, Jr., P. E.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

r
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG030000
CERTIFICATE OF COVERAGE NO. NCG030034
STORMWATER DISCHARGES
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and
the Federal Water Pollution Control Act, as amended,
ISOMETRICS INC
is herby authorized to discharge stormwater from a facility located at:
7537 HIGHWAY 87 NORTH
REIDSVILLE, NC
ROCKINGHAM COUNTY
to receiving waters designated as UT To Wolf Island Creek in the ROANOKE River Basin
in accordance with the effluent limitations, monitoring requirements and other conditions set forth in Parts I,
11. 111 and IV of General Permit No. NCG030000 as attached.
This Certificate of Coverage shall become effective September 15, 1997
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Sitined this day October 1.1997
for A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authorization of the Environmental Management Commission

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
May 14, 1993
Dennis M. Bracy
Isometrics, Inc.
Box 660
Reidsville, NC 27320
Subject: General Permit No. NCGO30000
Isometrics, Inc. Plant 2
COC NCG030034
Rockingham County
Dear Mr. Bracy:
In accordance with your application for discharge permit received on September 24, 1992, we are
forwarding herewith the subject certificate of coverage to discharge under the subject state - NPDES general
permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215 .1 and the
Memorandum of Agreement between North Carolina and the US Environmental Protection agency dated
December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to request an individual permit by submitting an individual permit
application. Unless such demand is made, this certificate of coverage shall be final and binding.
Please take notice that this certificate of coverage is not transferable except after notice to the Division
of Environmental Management. The Division of Environmental Management may require modification or
revocation and reissuance of the certificate of coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Mr. Bill Mills at telephone number 919n33-
5083.
cc
Sincer0f nal si
Golee n fined 8Y
H. Sulk s
A. Preston Howard, Jr., P. E.
Winston-Salem Regional Office
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DMSION OF ENVIRONMENTAL MANAGEMENT
' 11 ►I ► i till
I I �;, ►I ► I II
STORMWATER DISCHARGES
NATIONAL-I!OLLUTANT DISCHARGE ELIMINABON SYSTEM
In compliance with the provision of North Carolina General Statute I43-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
Dennis M. Bracy
is hereby authorized to discharge stormwater from a facility located at
Isometrics, Inc. Plant 2
Intersection of Hwy 87 and Vance Street Extension
Reidsville
Rockingham County
to receiving waters designated as an unnamed tributary to Wolf Island Creek in the Roanoke River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, 11, 1II
and IV of General Permit No. NCG030000 as attached.
This certificate of coverage shall become effective May 14, 1993.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day May 14, 1993.
Original Signed By
COleen H. Sullins
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission.

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