NCG080713_MONITORING INFO_20140725 (FIX)

STORMWATER DIVISION CODING SHEET
NCG PERMITS
1 0�0fit
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PERMIT NO. 1 /v C�
DOC TYPE
DOC DATE
❑ HISTORICAL FILE
6- MONITORING REPORTS
r)014 r7 a'�
YYYYMMDD

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG080000
Date submitted 05/15/14
CERTIFICATE OF COVERAGE NO. NCGO8 0 7 1 3
FACILITY NAME The City of Henderson Operations 97ervice Center
COUNTY Vance
PERSON COLLECTING SAMPLES Darrel Johnson and Robin Johnson
LABORATORY Henderson WRF Lab Cert. ## 242
Comments on sample collection or analysis:
SAMPLE COLLECTION YEAR 1
SAMPLE PERIOD [fl Jan -June ❑ July -Dec
or ❑ Monthly' (monthl
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow [:]WaterSupply ❑SA
Other Stormwater
PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Did this facility perform Vehicle Maintenance Activities using more than 55 gallons of n rfm o �l r r- th7 X yes no
(if yes, report your analytical results in the table immediately below) R�� _ —�
JUL 2 5 2014
Part A: Vehicle Maintenance Areas Monitoring Requirements (If applicable) CENTRAL FILES
❑ No discharge this period'
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00530
00400
U 0556
Total Suspended
Solids, mg/L
pH,
Standard units
Non -Polar Oil and Grease/TPH EPA
Method 1664 (SGT-HEM), mg/L
New Motor Oil usage,
Annual average gal/mo
Benchmark
-
50 or 100 see permit
Within 6.0 — 9.0
15
-
001
05/15/2014
26.5
5.7
<5
002
05/14/2014
003
05/14/2014
162
1 6.3
<5
Part B: Oil/water Separators and Secondary Containment Areas at Petroleum Bulk Stations and Terminals (If applicable)
Outfall
No.
Date
Sample Collected,
mo/dd/yr
00556
00530
00400
Non -Polar Oil and Grease/TPH EPA Method
1664 (SGT-HEM), mg/L
Total Suspended Solids,
mg/L
pH,
Standard units
Permit Limit
-
15
50 or 100 see permit
6.0 — 9.0
I For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
SWU-250 last revised April 11, 2013
Page 1 of 2

STORM EVENT CHARACTERISTICS:
Date 5/14/2014 (first event sampled)
Total Event Precipitation (inches): 3.68
Date (list each additional event sampled this reporting period, and rainfall amount)
Total Event Precipitation (inches):
Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier Z or Tier 3 responses. See General Permit text.
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART 11 SECTION B.
• 2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES ❑ NO ❑
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one cony of this DMR, including all "No Discharge" reports. within 30 daxs of receipt of the lab results (or at end of monitoring period in
the case of "No Discharge" reports) to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure
that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons
directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that
there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
(Date)
Additional copies of this form may be downloaded at: http://portal.ncdenr.org/web/wq/ws/su/npdessw#tab:4
S W U-250
last revised April 11, 2013
Page 2 of 2

Henderson Operation
Center Stormwater
Results
Rainfall Amount 5/15/14 8:00am to 5/16/14 8:00 am
3.68 inches
Sample Description
Date
Time
TSS mg/L
Temp °C
pH SU
mg/L
Cond (pmhos/cm)
Stormwater Drain #1
5/15/2014
2:28 PM
26.5
26.0
5.7
<5.0
48.7
Stormwater Drain #2
5/15/2014
'Flows into
#3
[Stormwater Drain #3
5/ 4
5 PM
16215.
.3
Rainfall pH 5/15/14 5.7 SU
Sampled by Darrel Johnson and
Robin Richardson
'No Sampling was done at 002
this period due to little or no flow
and confusion that pipe 002
flowed into 003 which was
sampled.

STORM WATER INSPECTION PROGRAM
5-15-2014 Collected storm water samples Rainfall amount 3.68 inches
Performed visual inspection of each pipe discharge
Tier One
5/30/2014 Received storm water test results collected on 5-15-14.
pH TSS
O & G
Benchmark
6-9 100 mg/1
30 mg/1
Pipe 001
5.7 26.5
< 5.0
Pipe 002
See note on sampling sheet
Pipe 003
6.3 162
<5.0
Fiscal Compliance Officer Edna Vaught and Assistant City Manager and Director
of Water Resources Frank Frazier conducted storm water management inspection
of facility.
Identified and evaluated possible causes of TSS exceedance values.
Storm drain area around Pipe 003 — An inspection was performed in the
area of storm drain inlets which are tributary to outfall 003. Based on the
inspection, it appears that there are a couple of sources that may have
caused the TSS to be beyond the benchmark value. With the number of
winter weather events that were experienced the past year there could have
been residual effects of some lingering salt and sand in the parking lot.
Also, the City had performed a great deal of street sweeping in the spring
to clean up the streets from debris and sand, etc. After the sweeper was
emptied at the landfill and finished for the day, it was brought back to the
center and the compartment thoroughly flush to prevent corrosion and
wear on components of the truck. This was being done outside of the
car/truck wash area so it will be monitored to insure that the sweeper is
cleaned out in the pit area which can be cleaned prior to going into the
sanitary sewer system.
Next semi-annual collection of storm water will be done after August 31, 2014. All storm water
pipes will be inspected on a quarterly basis to assure they are kept clear of debris and no work is
being performed in such a manner as to contaminate the run off into the pipes.

NCDENR
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: http &//oortaimcdennorg/web/wq/ws/su/npdes5W tab-4
Permit No.: N//_/^/_/_/�/_/_/ or Certificate of Coverage No.: N/C/L/0/8/0/7/1/3/
Facility Name: The City Of Henderson
County: Vance Phone No.252-431-6118
Inspector: Edna Vaught
Date of Inspection: 05/15/2014
Time of Inspection: 2:28 pm
Total Event Precipitation (inches): 3.68 inches
Was this a "Representative Storm Event" or "Measureable Storm Event" as defined by the permit?
(See information below.)
® Yes ❑ No
Please verify whether Qualitative Monitoring must be performed during a "representative storm
event" or "measureable storm event" (requirements vary, depending on the permit).
Qualitative monitoring requirements vary. Most permits require qualitative monitoring to be
performed during a "representative storm event" or during a "measureable storm event." However,
some permits do not have this requirement. Please refer to these definitions, if applicable.
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.
A "measurable storm event" is a storm event that results in an actual discharge from the
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period, and the permittee
obtains approval from the local DWQ Regional Office.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permitte0or Designee)
Pagel of 2
SWU-242, Last modified 10/25/2012

1. Outfall Description:
Outfall No. 001 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed Tributary of Nutbush Creek
Describe the industrial activities that occur within the outfall drainage area: Vehicle Maintenance
of City Fleet
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: No Color, No Tint
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil,
weak chlorine odor, etc.): No Odor
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is
clear and 5 is very cloudy:
0
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:
O2 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:
n 2 3 4 5
7. Is there any foam in the ssttoorrmwater discharge? Yes No
S. Is there an oil sheen in the stormwater discharge? Yes io
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of stormwater Pollution:
List and describe
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
SWU-242, Last modified 10/25/2012

��A
NCDENR
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit:
Permit No.: N/�/_/_/_/_/_/A/_/ or Certificate of Coverage No.: N/-C/G/0/8-/0/7/1/3/
Facility Name: The City Of Henderson
County: Vance Phone No.252-431-6118
Inspector: Edna Vaught
Date of Inspection: 05/15/2014
Time of Inspection: 2:28pm
Total Event Precipitation (inches): 6.68 inches
Was this a "Representative Storm Event" or "Measureable Storm Event" as defined by the permit?
(See information below.)
® Yes ❑ No
Please verify whether Qualitative Monitoring must be performed during a "representative storm
event" or "measureable storm event" (requirements vary, depending on the permit).
Qualitative monitoring requirements vary. Most permits require qualitative monitoring to be
performed during a "representative storm event" or during a "measureable storm event." However,
some permits do not have this requirement. Please refer to these definitions, if applicable.
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.
A "measurable storm event" is a storm event that results in an actual discharge from the
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period, and the permittee
obtains approval from the local DWQ Regional Office.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee a Designee)
Page 1 of 2
SWU-242, Last modified 10/25/2012

1. Outfall Description:
Outfall No. 002 Structure (pipe, ditch, etc.) See note on sampling sheet.
Describe the industrial activities that occur within the outfall drainage area: Vehicle Maintenance
of City Fleet
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors:
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil,
weak chlorine odor, etc.):
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is
clear and 5 is very cloudy:
1 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:
1 2 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 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
B. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
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
SWU-242, Last modified 10/25/2012

Q�
NCDENR
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: httR;,//portal.ncdenr,org/web/rya/ws/su/n essw#tab-4
Permit No.: N/�/�/_/,/_/_/_/_/ or Certificate of Coverage No.: NI/-C/-G/0/8-/0/7/1/3/
Facility Name: The City Of Henderson
County: Vance Phone No.252-431-6118
Inspector: Edna Vaught
Date of Inspection: 05/15/2014
Time of Inspection: 2:35pm
Total Event Precipitation (inches): 3.68 inches
Was this a "Representative Storm Event" or "Measureable Storm Event" as defined by the permit?
(See information below.)
® Yes ❑ No
Please verify whether Qualitative Monitoring must be performed during a "representative storm
event" or "measureable storm event" (requirements vary, depending on the permit).
......---... .......................... ................................_.... ....... .......................... -_------------- —
Qualitative monitoring requirements vary. Most permits require qualitative monitoring to be
performed during a "representative storm event" or during a "measureable storm event." However,
some permits do not have this requirement. Please refer to these definitions, if applicable.
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 i
precipitation. 'E
i
A "measurable storm event' is a storm event that results in an actual discharge from the
f
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval isrepresentativefor local storm events during the sampling period, and the permittee
obtains approval from the local DWQ Regional Office. !
........................... __......__.... ....................._._._..--- -------..------------ ----- -.-.-.-.--.-.i
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or
Page 1of2
SWU-242, Last modified 10/25/2012

1. Outfall Description:
Outfall No. 003 Structure (pipe, ditch, etc.) Pipe
Receiving Stream Unnamed tributary of Nutbush Creek
Describe the industrial activities that occur within the outfall drainage area: Vehicle Maintenance
of City Fleet
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: No Color No Tint
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil,
weak chlorine odor, etc.): No Odor
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is
clear and 5 is very cloudy:
1 Q 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:
0 2 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 O 3 4 5
7. Is there any foam in the stormwater discharge? Yes �No)
B. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
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
SWU-242, Last modified 10/25/2012