NCS000382_OTHER_20010125

STORMWATER DIVISION CODING SHEET
PERMIT NO.
NCS Ekz�j�2
DOC TYPE
❑ FINAL PERMIT
❑ MONITORING INFO
❑ APPLICATION
❑ COMPLIANCE
OTHER
DOC DATE
❑
YYYYMMDD

MEMO From:
To:
Division of Water QQuafity
Subject:
Date:
fhp- INS 933-002 x 263 -
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NCDENR
North Carolina Department of Environment and Natural Resources
PO Box 29535, Raleigh, North Carolina 27626-0535 / Phone: [phone]

JAN 2.5 2001
DIV yr WVA t iZH WUALITY
CENTRAL. FILES

MEMO From:
To:
Division Of Water Quality
Date:
Subject:
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NCDENR
North Carolina Department of Environment and Natural ResTurces
PO Box 29535, Raleigh, North Carolina 27626-05351 Phone: [phone]

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Permit No. NCS000371
Stormwater discharge characteristic monitoring as required in Part II of this permit shall be performed in
addition to facility inspections.
9
Implementation. The permittee shall document all monitoring, measurements, inspections and maintenance
activities and training provided to employees, including the log of the sampling data and of activities taken
to implement BMPs associated with the industrial activities, including vehicle maintenance activities. Such
documentation shall be kept on -site for a period of five years and made available to the Director or his
authorized representative immediately upon request.
SECTION B. ANALYTICAL MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the permittee is authorized to
discharge stormwater subject to the provisions of this permit. Analytical monitoring of stormwater discharges shall be
performed as specified below in Table 1.
For each parameter, the arit:nmeric mean of all analytical sampling results collected during the term'of the permit shall be
calculated for each individual outfall. The computed arithmetic mean is then compared to the cut-off concentrations listed
below in Table 2. If the arithmetic mean is less than the specified cut-off concentration for a given parameter, then the facility
is not required to continue analytical monitoring for that parameter (at that outfall) during the remaining term (except for the
last vear) of the permit unless a significant change in facility operations or configuration occurs. If a cut-off concentration
results in discontinued analytical monitoring at an individual discharge outfall, the permittee is required to maintain facility
operations that ensure the continuation of stormwater runoff quality.
The permittee must perform anal,,-tical„sampling during the first and last vear of the permit coverage regardless of cut-off
concentration conditions. Anal.'tical results from sampling during the final year of the permit coverage must be submitted
with the permit renewal application. All analytical monitoring shall be performed during a representative storm event.
Table I. Anaytical Monitoring Re uirements
Discharge
Characteristics
Units
Measurement
Fre uencyl
Sample
Type2
Sample
Location3
Biochemical Oxygen Demand
mg/1
Semi-annually
Grab
SDO
Chemical Ox oen Demand
me
Semi-annually
Grab
SDO
Fecal Coliform
Per 100 ml
Semi-annually
Grab
SDO
Total K'eldahl Nitrogen
mg/l
Semi-annually
Grab
SDO
Nitrate -Nitrite Nitrogen
mg/1
Semi-annually
Grab
SDO
Ammonia Nitrogen
mg l
Semi-annually
Grab
SDO
Total Phos horus
m I
Semi-annually
Grab
SDO
Total Rainfall`]
inches
Semi-annually-
-
Event Duration4
minutes
Semi-annually
-
-
Total Flow4
MG
Semi-annually
-
SDO
Footnotes:
I Measurement Frequency: Twice per year during a representative storm event. A year is defined as the 12 month period
be_innin4 on the month and day of issuance of the Permit.
Part II Page 3 of 6

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.JAN 2 5, 2001
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