NCG110124_MONITORING INFO_20110517

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT N0.
/V 0,,& 11 0
DOC TYPE
❑HISTORICAL FILE
VMONITORING REPORTS
DOC DATE
❑ �fjjj o51-7
YYYYMMDD

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Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
Permit No.: NICI`rI•/-ILIAA9l/ /0—/ or Certificate of Coverage No,: N1C/G111j46L1224y1
Facility Name: dMalZ4710 _
County: Phone No.
Inspector: Rfl7
Date of Inspection:
Time of Inspection:
Total Event Precipitation (inches): 0). 51-
Was this a Representative Storm Event? (See information below) Yes ❑ No
Please check your permit to veriA if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. - Structure (pipe, ditch, etc.) ZToliw 7%04iA.0_-
Receiving Stream: A
Describe the industrial activities that occur within the outfall drainage area:N,�
2. 1 Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: e,42-eR r2 eA�Iue� �cJl'�v /14i�ie�AL-
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.):
SWU-242-051309
Page 1 of 2

i
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
'V 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
1 3 -4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
1 07 3 4 5
7. Is there any foam in the stormwater discharge? Yes
S. Is there an oil sheen in the stormwater discharge? Yes
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
I
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
I -)
M
Page 2 of 2
SWU-242-051308

i
Stormwater Discharge Outfall (SD.0)
Qualitative Monitoring Report
Permit No.: N/C-.1_,1_L1 Q jfZl.%_()j pr Certificate of Coverage No.;
Facility Name:
County: _GA& Mi _ Phone No. 'i
inspector: k&D2fQA9 -
Date of Inspection: _�/�j/ 1 _
Time of inspection: T
Total Event Precipitation (inches):
Was this a Representative Storm Event? (See information below) 0 Yes ❑ No
Please check your permit to verb if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, i certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. o2, Structure (pipe, ditch, etc.)
Receiving Stream: &_ of Qc� _
Describe the industrial activities that occur within the outfall drainage area: _AjDhLF, R
2. . Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: 4JU4 _ZZUYdXIV
- -
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): --
SWU•242-051309
Page 1 of 2

4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy: P
2 3 4 5
5. Floating Solids: Choose the number which blest describes the amount of floating solids in the
stormwater discharge, where l is no solids and 5 is the surface covered with floating solids:
®1 2 3 4 5
G. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
1 52 3 4 5
7. Is there any foam in the stormwater discharge? Yes
a. Is there an oil sheen in the stormwater discharge? Yes S
9. Is there evidence of erosion or deposition at the outfall? Yes
10. Other Obvious Indicators of Stormwater Pollution:
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
J
Page 2 of 2
SWU-242-051308

�.7
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
Permit No.: N/Cl&,Ll j f&l Z)I NQ/
Facility Name:
of Coverage No.: NICIG1.ZILI0111 1
County: F0112nd Phone No.
Inspector:
Date of Inspection:
Time of Inspection:
Total Event Precipitation (inches): %5'
Was this a Representative Storm Event? (See information below) Yes ❑ No
Please check your permit to .verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. ��3 Structure (pipe, ditch, etc.)
Receiving Stream: -
Describe the industrial activities that occur within the outfall drainage area:
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: ea-4—
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.):
Page • 1 of 2
SWU-242-05I309

C Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy: _
10 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
2 3 4 5
6. Suspended Solids- Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy:
1 �? 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes �io
9. Is there evidence of erosion or deposition at the outfall? Yes l
1
10. Other Obvious Indicators of Stormwater Pollution -
Note: Low clarity, high solids, and/or the presence of Foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
S WU-242-051308

City of Mount Holly, North Carolina
Storm Water Pollution Prevention Plan
Wastewater Treatment Facility
2.1 Introduction
This section of the SWPPP defines the storm water system and associated potential water
pollution problems. Specifically, a description of potential pollution sources that may add
significant quantities of pollutants to storm water discharges, or which may result in non -storm
water discharges from the facility and need to be identified and described. Significant materials
as defined in the General Permit are substances or materials related to industrial activities of the
facility such as process chemicals, raw materials, waste products fuels and others.
2.2 Description of Facilities
This permit covers the Mount Holly Wastewater Treatment Plant, The Mount Holly WWTP
treats municipal and industrial wastewater and discharges into the Catawba River. Buildings on
site are used for office space, pump houses and general storage. A covered garage provides
storage for city equipment, oil barrels (in use and recycled). The Mount Holly WWTP has three
outfalls and less than 1 % of the ground surface is impervious.
2.3 Site Maps
2.3.1 Topographic Map
Exhibit A presents an aerial view the City of Mount Holly with the Mount Holly WWTP outlined
in blue. The map shows the storm water drainage for the facility listing all outfalls and discharge
locations.
2.4 Activity and Significant Material Inventory
Potential storm water pollutants sources are listed below. A list of pollutant types that have a
potential to be present in a storm water discharges are presented.
2.4.1 Wastewater Treatment Plant
The wastewater treatment plant occupies most of the site. Storm water drainage includes a storm
sewer system that discharges to the Catawba River.
2.4.1.1 Potential Storm Water Pollutant Sources
Process chemicals and waste products include treatment plant chemicals (e.g., Chlorine, Sulfur
Dioxide), lubricants and sludge. Lubricants are properly stored under a shed and are not likely to
be pollutants in the site's storm water runoff. Sludge is stored in sludge tanks which have an
overflow pipe which returns any overflow back into the treatment plant to prevent flooding out of
sludge.
2.4.1.2 Storm Water Management Control Measures
A list of existing storm water management control measures, or best management practices, for
the Wastewater Treatment Plant include the following:
• Proper labels on storage containers
• Storage and handling of process chemicals and lubricants in covered area
Materials are properly stored in containers
• Indoor and outdoor areas kept clean to avoid tracking of spilled materials
• Proper spill and cleanup procedures
• Training in drum and hazardous materials handling

2.5 Summary of Existing Storm Water Sampling Data
3. Storm Water Management Measures and Controls
Storm water management control measures, or best management practices, are used to reduce the
amount of pollutants in the storm water discharged from the Wastewater Treatment Plant. The
following storm water management controls are described in this section.
• Good housekeeping
• Preventive Maintenance
• Spill Prevention and Response
• Storm Water Management Practices
• Sediment and Erosion Prevention
• Employee Training
• Routine Visual Inspections
• Non -Storm Water Discharge Elimination
3.1 Good Housekeeping
Good housekeeping practices are intended to maintain areas that may contribute pollutants to
runoff in a clean and orderly manner. A clean and orderly work area reduces the possibility of
accidental spills caused by mishandling of equipment and should reduce safety hazard to facility
personnel. Examples of good housekeeping practices for the site:
• The facility should be kept clean by picking up all trash and unwanted debris on a regular
basis.
• The pavement should be kept clean.
• Store drums, containers and other materials in a neat and orderly fashion. Provide
`- adequate aisle space to facilitate material transfer and easy access for inspections. Store
containers away from direct traffic routes to prevent accidental spills. Properly label
containers.
• All dumpsters should be free of leaks.
• Make sure equipment is working properly with routine inspections for leaks or conditions
that could lead to discharges of pollutants in storm water.
• Ensure that employees and contractors understand pollution prevention and spill cleanup
procedures.
3.2 Preventative Maintenance
The recommended preventative maintenance program includes inspection and maintenance of
facility equipment and storm water controls that could fail or leak, resulting in the discharge of
pollutants to storm water. Appropriate preventative maintenance procedures for the facilities:
• Facility vehicles and equipment should be maintained in accordance with the equipments
manufactures manual. The regular maintenance shall include the visual inspection and
replacement, as necessary, of seals, gaskets and other parts.
• Facility equipment and systems should be inspected and tested on a regular basis to
uncover conditions that could result in the discharge of pollutant to surface waters.
• All storage containers should be inspected on a monthly basis for signs of cracks and
leaks.
• Timely inspection and maintenance of storm water management devices (e.g., cleaning
catch basins).
3.3 Spill Prevention and. Response
Potential pollution sources that could spill or leak are to be inspected on a regular basis. All
observed spills or leaks will be immediately contained by a drip pan or absorbent. Spills shall be

cleaned up as soon as possible using appropriate methods. Leaks are to be repaired as soon as
possible. All affected employees are to be informed of their responsibilities to control leaks and
spills, which would be covered in general awareness type training. Spill prevention procedures:
• Any observed leak or spill should be immediately contained, cleaned up, and repaired as
soon as possible.
• Facility vehicle and equipment operators should check their equipment each shift for
signs of leaks. If any significant leaks are detected the operator is to place a drip pan
under the equipment until it can be repaired.
• Drip pans should be place under all unused equipment and vehicles that are stored outside
and observed to be leaking. The leaks should be repaired as soon as possible.
• Filling of storage tanks, vehicle fuel tanks and equipment tanks should be observed and
any spills that occur should be cleaned up immediately.
• Contact the City of Mount Holly Fire Department at 911 for any spills that cannot be
contained on -site or that pose an immediate health and safety threat.
3.4 Storm Water Management Practices
Storm water management practices are practices (others than those that control the source of
pollutants) used to divert, infiltrate, reuse or otherwise manage the discharge of pollutants in
runoff. Practices are:
• Covered Storage Areas — Wastewater Treatment Plant chemicals, lubricants and
degreasers are inside buildings or under covered areas and properly stored. Vehicle
maintenance activities occur off -site.
• Containment — OiI drums are contained in designated oil containment containers.
• Debris and Sediment Control — Storm sewer inlets that are located throughout the facility
have grates to collect debris.
• Waste chemical disposal — Proper disposal or recycling waste chemicals such as
degreasers and used oils.
3.5 Sediment and Erosion Prevention
3.6 Employee Training
Effective management of storm water pollution will require that facility staff be aware of
conditions that may cause pollution. Furthermore, proper use of Best Management Practices
(BMP) by employees is essential for the success of the Storm Water Pollution Prevention Plan
(SWPPP). The Storm Water Pollution Prevention Team (section 4) is responsible for developing
and implementing an employee training program. At a minimum, the SWPPP training will be
conducted annually. The SWPPP information should also be reviewed with all new employees.
The following subjects will be addressed in the training program:
• Objectives and requirements of the SWPPP
• Spill prevention, response and internal end external reporting procedures.
• Good housekeeping practices.
Material management practices
• Proper fueling and storage procedures
The team will evaluate the effectiveness of the training program an make improvements as
necessary to promote employee awareness and accountability.
3.7 Routine Visual Inspections
• Material and waste storage areas maintained and in good condition to minimize discharge
of pollutants.

• Any oil leaks or spills present are properly contained by drip pans or absorbents.
( Absorbents are picked up and disposed of properly in a timely manner.
• Containers and above ground storage tanks are in good condition.
• Vehicle and equipment maintenance areas in good condition.
• Grounds do not show signs of erosion.
4. Storm Water Pollution Prevention Team
The storm water pollution prevention team is responsible for developing, implementing,
maintaining and revising this plan. The members of the team are familiar with management and
operations of the facilities. Mr. Mike Moretz, ORC of the Mount Holly Wastewater Treatment
Plant, is primarily responsible for coordinating overall storm water pollution prevention practices
and maintaining best management practices.
5. Annual Inspection Procedures
5.1 Annual Inspection
In addition to the routine visual inspections (Section 3.7), the General Permit requires that an
annual facility inspection be conducted. The objectives of the inspection are to assess the overall
effectiveness of this SWPPP and to modify or improve the SWPPP, where appropriate. The
annual inspection includes the following tasks:
• Modify or update the site map to reflect current conditions
• Identify all potential pollution sources
• Inspect outfalls for evidence of pollutants entering the drainage system and adversely
impacting the receiving water body
• Verify that source and structural controls have been implemented, are being maintained,
and are effective in controlling storm water pollution
• Determine if improvements or additional control measures are needed.
• Inspect the availability of adequate spill response equipment and supplies.
The annual site inspection will be performed each year by a member of the Pollution Prevention
Team or designee. An annual inspection form will be filled out each time an annual site
inspection is conducted. The SWPPP shall be revised whenever there is a change in design,
construction, operation or maintenance, which may impact the potential for pollutants to be
discharged or if the SWPPP proves to be ineffective in controlling the discharge of pollutants.
l

2010 — 2011 Storm Water Training for Mt. Holly Waste Treatment Plant
I have read the storm water spill prevention plan for Mt. Holly, implemented in the
storm water permit. I understand it is my responsibility to respond to spills with
appropriate materials to keep discharges out of the outfalls associated with the
storm water layout for the plant. I also understand it is my responsibility to report
these spills, including time, date, material spilled, and amount of material spilled as
soon as discovered. I will instruct contractors on the appropriate action required
when they are involved in a spill situation.

CITY ofMOUNT HOLLY
40o East Central Ave.
Post Office Box 406
Mount Holly, NC 28120
704-827-3931,
704-822-2933 fax
www.rntholly.us
Date: (p - (�, a o&
Time: / 33 a
Inspectors:
t�•CUNT
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a community with a vision
NC -
turning ideas into action
Stormwater Pollution Prevention Plan
Facility Inspection Program
Narrative of Inspection Results:
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