NC0020737_WASTELOAD ALLOCATION_19890117

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit: NC0020737
Kings Mountain WWTP
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Correspondence
201 Facilities Plan
Instream Assessment (6713)
Environmental Assessment (EA)
Permit
History
Document Date.: January 17, 1989
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DIVISION OF ENVIRONMENTAL MANAGEMENT
January 17, 1989
TO; Jim Reid
THROUGH: Randy Dodd y/ (t>
FROMn Ruth Clark hoNa
SUBJECTn City of Kings Mountain Monitoring Requirements
1,1 O7�7
B"ffalc' Creep (Q???Q4)
Cleveland County
l have snclnsed a copy of the guidelines used to determine �
which parameters should be monitored instream . Since serundary
linits were assigned during the winter months, and the model
predicts that the dissolved oxygen sag will occur at the discharge
point during these months, the monitoring requirements can be
relaxed during the winter . The permit has not yet been issued '
and I have recommenned that the winter monitoring requirement oe
dropped for all parameters. Ths summer monitoring will remain as
ih is written in toe approval form . if you have any questions -
please call me at (919 )723-5083.
�

Instream Self-Monitoring Recommendations
General Guidance hAl
PDES permiY
Where NtQiLd,i.5_chara watrr es r_ oualltY limited, or where
there is a question regarding doyns.tream_%,ta_t_¢r g_ualit_y, appropriate instream
(i.e. upstream s downstream) monitoring requirements should be assigned_ In
general, the following should apply: .
Minor Facilities (,!V/ ,�Q,�_
a.) Oxygen-consuming wastes
-- monitoring sties: 1 upstream site, 1 downstream site located at or near
the predicted dissolved oxygen sagpoint (if unaccessible, it will generally
be preferred to choose a point further downstream in order to better examine
the impacts when flows are slightly higher than 7Q10 - i_e. annual summer
low flow periods) .
-- parameters: temperature, DO, conductivity, fecal coliform if waste is
domestic or where bacteria are present (on occasion, it may be necessary to
n add BODS and NH3-N, and potentially pH) . ,
'? -- frequency: weekly. during summer period (Apr - Oct) , biweekly during the
winter period (Nov - Mar) .
b.) toxics
In general, effluent biomonitoring may preclude the need for instream
monitoring of a specific toxicant. However, if a particular toxic component
is expected to be at or very near the standard under actual discharge con-
ditions (i.e. not just permitted conditions) , instream monitoring may be
appropriate.
-- monitoring sites: 1 upstream site, 1 downstream site located at or just
below mixpoint of the discharge
-- parameters: (dependent on the composition of the discharge)
-- frequency: weekly during summer period (Apr - Oct) , bi-weekly during
winter period (Nov - Mar))
Major Facilities '� � i»CA
a) Oxygen-consuming wastes
-- monitoring sites: 1 upstream, 1-3 downstream locations (It is recom-
mended that at least one site be established at the. predicted
under low flow conditions_ In many cases it may be appropriate to add a- 2nd
site downstream of the 1st in order to examine impacts under more.-normal "'""

flow conditions. Finally, where a discharge influences water quality .for a
very long distance -- or multiple DO sags are predicted -- 3 downstream
monitoring stations may be assigned.) -
_ -- parameters: temperature, DO, conductivity, pH, fecal coliform (if waste
is domestic. or if bacteria are present) , BOD5, and NH3-N (if nitrogen is
discharged - can also include TKN if a large organic nitrogen component is
present) , others as deemed appropriate (e.g. phosphorus, etc.) .
-- frequency: 3/week during the summer period (Apr - Oct) , gek y during
the winter period (Nov - Mar) . � .
b) toxics
In general, effluent biomonitoring may preclude the need for instream
monitoring of a specific toxicant. However, if a particular toxic component
is expected to be at or very near the standard under actual discharge con-
ditions (i.e. not just permitted conditions) , instream monitoring may be
appropriate.
-- monitoring sites: 1 upstream site, 1 downstream site located at or just
below the mixpoint of the discharge_
-- parameters: (dependent on the composition of the discharge)
-- frequency: 3/week during the summer period (Apr - Oct) , weekly during
the winter period (Nov - Mar) .
AFC

DIVISION OF ENVIRONMENTAL MANAGEMENT
December 28, 1987
MEMORANDUM
TO: Regional Water Qua l ty Supervisors -
THRU: Steve Tedder
FROM: Trevor Clementll( C
SUBJECT: Instream Monitoring Requirements for NPDES Discharges
There have been several inquiries from the regional field offices regarding
the rationale for changes in the instream monitoring requirements for NPDES
discharges of oxygen-consuming waste. The changes were made in an effort to
gather the appropriate information that will allow DEM to evaluate the instream
impacts attributed to the discharge. As you know, the Division is no longer
changing existing permit requirements for oxygen-consuming wastes upon permit
renewal unless there is information demonstrating that the existing limits are
not protecting water quality standards during low flow conditions. Since DEM
cannot always directly monitor all discharges within the state, staff must rely
upon the self-monitoring system for this information.
Our ultimate objective is to maintain water quality in a given water body to
assure that its designated use is protected. Therefore, we are asking the
regions to support this objective by placing as much emphasis on reviewing
instream data as is put into reviewing effluent data. Quality assurance will be
necessar
y if DEM is going to place greater reliance on self-monitoring data.
Since Technical Support routinely reviews self-monitoring data for every exist-
ing discharge whose permit is up for renewal, we can provide the first phase of
screening. The regions can assist by following up on situations where Technical
Support has a question regarding the validity of the data or the appropriateness
of the methods by wh�ch_.the,_data is being collected. In this manner we can work
jointly to improve the information received through the self-monitoring program
so that it can be used accordingly.
Let me=assure you--that the instream data being "requested is benefteial to
the Division. Temperature, D.O., fecal coliform, and conductivity parameters
provide the minimum amount of data necessary for Technical Support to adequately
assess the impacts instream from an oxygen-consuming -waste discharge. Conducti-
vity was added to the other parameters as a routine monitoring requirement
because it can add valuable insight as to the contribution of the discharge to
instream conditions. This information will help us determine whether low D.O.
concentrations downstream are due to a slug Of wastewater, typical facility.
Operation, or to natural background conditions.
r .aremen working with the Facility Performance Unit to streamline these
i
requirements and to make sure program_ that they coincide with the overall monitoring
b A (those proposed
of all Official changes (the sent out P posed for rule-making) will
for your review: Please let me know if you have any questions 'or `
.comments regarding this matter_ .
cc r Hob" DeWeese - -
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INSTREAM SELF-MONITORING DATA
MONTHLY AVERAGES
Discharger : r hj or kD 5 /v CK. lotorP Permit No . : NC00 ,20237
Receiving Strum : bgrojoaeee- Sub-basin : gl� 03o8o6--
:Jpstream Location : ove ( , r{rGEDownstream Locationi0/X� m. lelnvr% XhaJe
Upstream `1 Downstream
?ATE TEMP D . O . BOD5 COND . TEMP D .O. BOD5 COND
-EC-88
ia:V-88
EP-88 03 (?-0 Col a0 _ I•gCt
A.UG-83 �3 1.2 I (F ate_ zo 0.0
JUL-Ss a3 gz ao Ou S•o a.�
U N-8,, a3 -31 as 7.91 a.G
MAY-8 8 Cl I q R.�13 �•8
All R-88 I Q.20 a•IA 17 Q.`kf 0-31
M P,R-88 f7 �c� 2,g5 gr.3z 3.1+1
JAN-88 --
-s7 _1I.R )o.Q iA9 3.0
-87 lz 9ss q,g_ _�
-..- .-8 7 B.2 Q.S. �' ,2-- _8.8 i0,I 3.z --
g 7 z2 i9 � �.3 25 -
,t T,_,27 25 G.O -2,3 2. S.lo I.Q
Y-8 7 -tom 0,0 zj I g', 1 3.6
PR-87 _IL q.D 22_5 0 9.1 3,1
- --
AR-87 13 ID,I 3,5 �z ro.i_ qlq
EB-87 1� 10.3 z.� _ Il lo, 7- 1L
D)EC-86 Iro CUP 2.z 1l �+� 2.5
NOV-86 7/4 2,1 21 2.?
OCT-86 zl q.2- 2.6 _2z _4' 2A --
AZ,9P-86 7,3 2 '1 ;25 7.7 2.2.
`t dG-86 2g_ 5.9 3,1 q.4 W4,0
,S'�'d-t*L-8 6 �_ S,5 3,
rncl�-86 3 T 3,4 23 A.z _3, 1_ --
MAY-86 .ZB _
A R-8 6 .21 Cj.2 2.6 2-1 4.tr 3.1
MAR-86 '_ 10-ki 3.I 1 ) 10.3 3.4
FEB-86 I_ 103 2.^1 i'J IDA 2.)
JAN-86
DEC-85 -- -- --
NOV-85 -- -- --
OCT-85 --
3EP-85 --
AUG-85
JUL-85
JUN-85
MAY-85
APR-85
MAR-85
FEB-85
JAN-85