NC0023884_Wasteload Allocation_19950220

PERMIT NO.: NCO023884
PERMITTEE NAME:
FACILITY NAME:
NPDES WASTE LOAD ALLOCATION
City of Salisbury
Grants Creek Wastewater Treatment Plant
Facility Status: Existing
Permit Status: Modification
Major Minor
Pipe No.: 001,
Design Capacity: 20 MGD WL,4✓ 7•1 yMd
av JCJ
Domestic (% of Flow): 72 %
Industrial (% of Flow): 28 %
Comments:
The waste load should be phased as follows: ,I�
1. 7.5 MGD into (just Grants Creek WWTP) p
2 i 24 M G 9 i As + yin R r/� ratite r, k &Town CrkZ
3. 20 MGD into the Yadkin River (Regional WWTP)
RECEIVING STREAM: Yadkin River
Class: WS-V
Sub -Basin: 03-07-04
Reference USGS Quad: E 17 NW
(please attach)
County. Rowan
Regional Office: Mooresville Regional Office
Previous Exp. Date: 7/31/93 Treatment Plant Class: Class IV
Classification changes within three miles:
none
Modeler
Date Rec.
#
Am;V
i . yS
fv &e,
B�
Drainage Area (mil) Avg. Streamflow (cfs):
7Q10 (cfs) Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits: IWC % Acute hronic /dam ✓
Instream Monitoring: 7. 4t a 0 rhg C/
Parameters. Aict,
Upstream �- , 51 a:� AK � IrI� a,;Y7 , ► �
Downstream___,,_
'& %tr3l`t
Requested by: Ja Lucas Date:
Prepared by: Date:�s-
Reviewed by;, Date:
Ind-1-7 19 (3) 38(W+�-µdi.
Effluent
Characteristics
_ y, 5"_.! _
�,, l� i N,
.2-O r^ '.
i yL
BOD5 (mg/1)
15
30
5
16
NH3-N (mg/1)
LP
I o2
D.O. (mg/1)"
TSS (mg/1)
3D
3 6
30
3
F. Col. (/100 ml)
po
a.Db
c�.Lr.� ��g�l)
m�-�,t-fir
0
0tJy i.vrK 4/1)
D
C�l0A(,6U6)g11)
5D
Vbtercu (vg ID
v�
0496
NA ON IToR
COPPeY, �►'nc
1Ya�-, 64.
5
o� J gnu`
cc� tox�
%), and
!h4,01KIm T �i r. ZUto , , rn+hun
baaclBn. dGufi'en--1-1,lo��

FACT SHEET FOR WASTELOAD ALLOCATION
Gran h Cvet L
Request #, $035__91 Wo /%p OF
Facility Name:
City of Salisbu%WWTP
DEFT.
ENVIRONMENT, HEALTH,
NPDES No.:
NCO023884
& NATURAL REF!OUT<C711S,
Type of Waste:
78% Domestic 22% Industrial
Facility Status:
RELOCATION
JAN 27 1995
Permit Status:
Renewal
Receiving Stream:
Yadkin River
Stream Classification:
WS-V
DIVISION OF ENVIRONMENTAL MANAGE; NT
Subbasin:
03-07-04
MOORESVILLE REfIONAL I+FF!CF
County: Rowan Stream Characteristic:
Regional Office: Mooresville USGS #
Requestor: Jay Lucas Date: 11/1/'94
Date of Request: LW1S/94"_ 17,1419'9 Drainage Area (mi2):
Topo Quad: E17NW Summer 7Q10 (cfs): 105*
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
eke k IWC (%): 10%
*The,N10=104.625 cfs for 7.5 MGD and,,7Q10 = 279 cfs for 20 MGD in the Yadkin River. The 7Q10
values were back calculated using the dilution from the diffusetflease address questions concerning this matter
to Betsy Johnson. o-1 /4, /;� /✓%j� /
Wasteload Allocation Summary
There were several observed DO violations instream during the summer of 1993 and '94.One value
was as low as 2.2 mg/I (Temp 19 & % Sat 24) at the mouth of Grants creek (9/20/93). Facility has had
several BOD5 (max 44.57 mg/1) amd NH3N (max 20.17 mg/1) violations within the last 2 years. Facility is
working to alleviate sludge build-up in the plant which has caused mercury violations. Facility failed toxicity
tests consistently from Jun '93 to Feb 94. In a 1989-1990 survey of High Rock lake, Grants Creek was
ranked second among tributaries for nutrient impairment. There is little available dilution (1.5:1) for
wastewater. In addition, the creek below the WWTP is very slow moving so there is ample retention time for
algal growth. Algal blooms are frequent below the WWTP. Upon completion of a nutrient management plan
for High Rock Lake, nutrient limits may be required. Relocation of the discharge to the Yadkin River is ,✓ \
recommended in order to allow for expansion of the WWTP and to provide better assimilation of the�+h
wastewater. SOD study conducting 1993 showed Avg SOD rate 0.4716 gr/m2/day in the Yadkin River 0.25
miles upstream from Grants Creek and avg SOD rate 3.8404 gr/m2/day in the Yadkin River 0.25 miles
downstream from Grants Creek. Recommend existing conventional limits and new toxicant limits based one
dilution provided by the diffuser.
and
Prepared by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineerin
U � Reviewers: mQ Ty
� 1"' �
d v,
Date: 12v�r,Y
�1 Wvu
1 5- L
b p�y
RETURN TO TECHNICAL SERVICES BY: FEB 2 2 JR5

CONVENTIONAL PARAMETERS
Existing Limits:
Grants Creek
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. V100 ml):
pH (SU):
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Monthly Average
Summer Winter
7.5
7.5
15
30
6
12
5
5
30
30
200
200
6-9
6-9
monitor
monitor
monitor
monitor
monitor
monitor
Grants Creek Yadkin River Yadkin River
Monthly Average Monthly Average Monthly Average
Summer Winter Summer Winter Summer Winter
7.5
7.5
7.5
7.5
20
20
15
30
15
30
5
10
6
12
6
12
2
4
5
5
5
5
6
6
30
30
30
30
30
30
200
200
200
200
200
200
6-9
6-9
6-9
6-9
6-9
6-9
monitor
monitor
monitor
monitor
28
28
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
A nutrient management plan for High Rock Lake is currently being developed
which may require nutrient controls at this facility.

Type of Toxicity Test:
Existing Limit:
Recommended Limit:
Monitoring Schedule:
ExistingLimits
imits
Flow (MGD)
Cadmium (ug/1):
Chromium (ug/1):
Copper (ug/1):
Nickel (ug/1):
Lead (ug/1):
Zinc (ug/1):
Cyanide (ug/1):
Ali minuet (ugh):
Fluoride (mg/1):
Mercury (ug/1):
Chlorides (mg/1):
Toluene (ug/1):
TDS (mg/1):
Silver (ug/1):
TOXICS/METALS
Chronic, quarterly
67%
10% (Yadkin River for 7.5 and 20 mgd)
67% (Grants Creek for 7.5 mgd)
Mar, Jun, Sep, Dec
. Grants Creek
Daily max WQ or EL
7.5
monitor
75
WQ
monitor
monitor
37
WQ
monitor
monitor
monitor
2.7
WQ
0.018
WQ
monitor
monitor
monitor
monitor
Recommended Limits
Grants Creek Yadkin River Yadkin River
Daily max -WO or EL Daily max WO or EL Daily max WO or EL
FLOW
Cadmium (ug/1):
Cyanide (ug/1):
Mercury (ug/1):
Chromium (ug/1):
Nickel (ug/1):
Lead (ug/1):
Aluminum (ug/1):
Copper (ug/1):
Zinc (ug/1):
Iron (ug/1):
TDS (mg/1):
Silver (ug/1):
7.5
7.5
20
3
WQ
20
WQ
20
WQ
7.5
WQ
50
WQ
50
W
0.018
WQ
0.120
WQ
0.120
WQ
LTMP
LTMP
LTMP
LTMP
LTMP
LTMP
LTMP
LTMP
LTMP
LTMP
LTMP
LTMP
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
**Yadkin River Limits,based on dilution of 10:1. at each flow due to diffuser.
�-jLjmi�s sI4o0.d 4pply L- jears o4kr- effediut duiLJ .permlT- Mondvi- pnry )St'- 2- ears.
Toxics were reevaluated based on observed DMR data and new EPA methods. Limits ar
required for cadmium, cyanide, and mercury based on observed and predicted exceedances
of the water.quality allowable levels. Chromium, nickel, lead, and aluminum will be
monitored through the long-term monitoring plan. The observed and predicted values are
lower than the allowable levels with the exception of aluminum (Grants creek) which greatly
exceeds the allowable but which has no state standard. Monthly monitoring is recommended
for copper, zinc, iron, and silver due to high levels observed in the effluent.

x_ Parameter(s) are water quality limited. For some parameters, the available
load capacity of the immediate receiving water will be consumed This may affect
future water quality based effluent limitations for additional dischargers within
this portion of the watershed.
•,
No parameters are water quality limited, but this discharge may affect
future allocations.
INSTREAM MONITORING REQUIREMENTS
Grants Creek "discharge
Upstream Location: off of Bridge on Third Street Extension
Downstream Location: 1. above the Spencer WWTP outfall
2. at the mouth of Grants Creek
Parameters: Temp, DO, Fecal, Cond, Turbidity
Special instream monitoring locations or monitoring frequencies:
at downstream site 2: Jun -Sept (1/wk), TP, PO4, TKN, NH3N, NOx (- A
Yadkin River
Discharge
Upstream Location.- 200 ft upstream from diffuser outfall in the Yadkin River
Downstream Location: Yadkin River at the Town of Yadkin or
0.7 miles upstream of the railroad bridge (se_ a "tw m��)
Parameters: Temp, DO, Fecal, Cond, Turbidity
Special instream monitoring locations or monitoring frequencies:
at downstream site: Jun -Sep (1/wk), TP, PO4, TKN, NH3N, NOx , C_al -A
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with
existing treatment facilities? Yes No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No.
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:

If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) Y (Y or 1)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not
modeled, then old assumptions that were made, and description of how it fits into
basinwide plan)
Additional Information attached? (Y or 1) If yes, explain with
attachments.

SALISBURY QUADRANGLE
NORTH. CAROLINA
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Facility Name qa Cm n4 Creel WWIP Permit # NC b02,398+ Pipe # 101
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is 61 % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
,quarterly monitoring using this procedure to establish compliance with the permit condition. The first test will be
performed after thirty days from the effective date of this permit during the months of
A#k7.--T U/V , SEP; DE(' . Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: EnvironmentabSciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 4195 cfs
Permitted Flow 11.5 MGD
IWC L %
Basin & Sub -basin - 030704<
Receiving Stream & &ranks raxk
County 0 w a sa
Recommended b
�y
Date J1 2v
QCL P/F Version 9191

FacilityName Creel F Permit # W 00 23 99 Pipe # 00
Re16ca-6o;, h # Yadkt'n
CHRONIC TOXICITY PASS/FAH. PERMIT LIMIT (QRTRLY) .
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is /0 %- (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
Quarterly monitoring using this procedure to establish compliance with the permit condition. The first test will be
performed after thirty days from the effective date of this permit during the months of
WA4 . Jj' /N , S92, Me. . Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 _ 0 o16 Z5 cfs
Permitted Flow Y, 5 MGD
IWC /0
Basin & Sub -basin YA1) 03 07 o4
Receiving Stream Ya d h i Ge y
County 9 n ►► p v1
Recommended by:
���G7'
Date 11431174
' 64.c '
on obi u hon �-om
Ho
Consv/f
84� do johpiso'7
got&
hit re on1 1ve,S%OnS cwernist�j 7Q
QCL P/F Version 9191

Facility Name is bilru-Ya d� R Ve Y W Nr P Peimit # N�3 99 Pipe # o l B
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity, using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is _�Q % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
quarterlmonitoring using this procedure to establish compliance with the permit condition. The first test will be
performed after thirty days from the effective date of this permit during the months of
!'YlfiQ � :IV /V . sr_ b tC . Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 2%9 cfs
Permitted Flow ZO MGD Recommended by:
IWC 10 %
Basin &Sub -basin Yi4D rQ30749
Receiving Stream Ya rlln'ri 9rV-e c-
County PX 1A10ki Date 1 J�
QCL PIF Version 9191

NC OU 23894 tl0
zz 2a
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5/5
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1 w Q-1 = 1070
�'e n So.I ishai — Town Cveelc WW�p , t� Seoeheel GiIG�I�Q

r —
SA tic ✓ Waste Water Treatment Plant NC003M28g
�-aVje-S� ,Va1v2S �y w►o�f Seve�t D-0. Va"
245
Downstream:
La) mouth of Grants Greek
Temp
DO
Saturation Fecal
Conductivit
174
27
3.6
45% 430
186
30
4.8
63% 110
179
/ ry
23
4.4
51 % 2300
187
26
6.0
74% 230
209
16
8.4
85% 400
139
no data
0%
24
4.1
49% 480
113
26
4.4
54% 130
128
27
5.3
66% 1700
140
19
6.0
65% 22900
204
11
6.5
59% 450
188
Downstream
Month
Temp
Aug-93
24
Jul-93
26
Jun-93
23
73
May-93
20
Apr-93
14
Mar-93
11
Aug-94
23
Jul-94
24
Jun-94
23
May-94
15
Apr-94
19
Mar-94
15
Ipstream from Spencer
DO Saturation
W WTP
Fecal
4.0
48%
430
186
3.5
43%
6000
258
4.6
54%
620
440
5.8
64%
610
269
6.2
60%
4500
230
8.0
73%
5800
171
4.3
50%
6000
127
3.8
45%
6000
129
4.3
50%
6000
337
5.8
58%
1900
282
5.5
59%
400
245
6.8
67%
380
294
11 /3/94

WHOLE EFFLUENT TOXICITY TESTING 0[SEL.F-M0NIT0RING SUMMARY) Mon, Oct 17, 1994
4CII.T1 Y PFRM CIIR LIM:32%; 52960>0.3MGD.
Frequency Q P/F p ITB MAY AUG NOV NonComp:
OSBBORO WWT{' 8/1191
NCO026816/001 Begin' Region: FRO Subbasin: CPF19
Count): SAMPSON special SOC:V 203-7/31/95 SAME AS PIiRMTT
Pr: 0.3 Oider:
7Q10: 1.0 IWC(%):32
PERM AC MONTT:SIGN MOR-1• RE
NonComp''I I OR CLR t
,O AN COUNTY 2ND CREEK cmtluem-Y: Q JAN APR JUL OCT
NCO0783611001 Bcgin:7/16/90 $ubbasin:YAl)06
Region: MRO
County: ROWAN spcdal
PF:0.03 Order.
7QW- 14 IWC(%):0.33
PERM Cl1R LIM:90% No„t'o„ I SINGI V,
ROXBORO WWTP 1'ts� ,cnr,yt O P/1' A XIII' DI'.t' MA1t JUNN(-nn21024A)01 Brµin: Sl l/'r3Region: RRO Subbnsin: ROA05
Counly: i'ERSON special
PF: 5.00 Order.
7QI 0: 0.00 IV1 C(%): 99.87
LLTr C3 I 1'AR:41 %
RUI-IIL•RI'ORD iVRNrI'URE CO. Crcq+ may. Q P/r A M. MAY AUG NOV NonComp:
NCOD054611001 Begin:8/1/89 Subbnsin: BRIX)2
county: RU1,11 r-ORD Region:ARO
special
Pr: 0.045 order.
17QI0: 0.10 IWC(96), 41.09
PERM CIIR LIM:48% RIERFORDTON WWTPonComP:SINGI.I=
(n{CT JAN APR
NC00259091001 Begin:1211/93 PrequencY Q P/F A JUL OCTO
County:R1J11�RFORD Region: ARO Subbnsin: BR1X)2
special
PF. 1.0 order.
7Q10: 1.70 IWC(%):48
PER AC MONrl . 24HR LC501'111D EP13 Comp
PRODUCTS Non:
SACK 1i n;2/t/93 Frequency: 5 OWD/A
NC0o81779/001 11cPJ Region: MRO Subbasin: YAD06
County: IREDELL special
1'1;:.0016 Oidee
7Q10: 0.0 IWC(%):1W.0
PERM CIIR LIM:>D% NonComp:SINGLE
SAFEL.ITr- GLASS CORP. PIF A B MAY AUG NOV
NC0080292/OMl Begin:?l1/92 Frequenry: Q F7
Region: RRO Subbnsin: TAR04
County:}iAL-IFAX special
PF: 0.08
--- - SCR 'K WwTP PERM is+v�-
SALISBURY-GRANT A MAR JUN SEP DEC
NonComP:
Frequcn
NCO0238941001 Begin:4/1/91 Subbnsin; YAIX14
Rrµion: MRO
County: ROWAN ylxa.l
Oidor
7Q10: 5.9 IWC(%):67
PIiRM CIIR
11
REEK W W IY
Froquerin' Q P/F /, MAR JUN SEP DEC
NCO023992MI Begin:811N4
Region: MRO Subbnsin: YAD04
County:ROWAN special
PF: 5.00 order.
7 Q 10: 1.40 IWC(%). 84.7
PERM CIIR LIMN-SU SEP DEC
SANDOZ(SODYECO) Frequency: Q P1F 0 MAR
NC0004375/001 Bcgin:9/1/9l CTB34
County: TECX1ENBURCr Region: hiROpecia$ubbasin:
PF: 3.90 Order'
7010: 95.0 IWC(%): 5.98
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94
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91 —
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94 >100'
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93 —
94 FAIL
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91 --
92 —
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94 --
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91 PASS
92 PASS
93 PASS
94 PASS
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92
93
94
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at
Pl
in D• Discontinued monitoring Mgwrcrix;nt; IS. Conducting indc
Y I'n 1990 Duui Av:iilnblc when discharging; Current ComPltance Requirement
0 2 consecutive failures = significant noncomPliancr
NonComp=
Monitoring frequency` Q.
Quarterly: nt Monthly.t BM1,1cf fail
ure Months that; SAutestinglm must occur�lez (IAN,APR JUL,OCT SIG = ORC signature needed
LEGEND: Frequency = monitoring increases to monthly uponCI I = Chronic
, Bad lost
uiremcm LET = Adrmnistrative Lolo • low criterion p = pass rlY Acute
pERJ 1 = permit Req P/F = p ,Mcri l chronic test AC = t-Motu data available for month in question
Begin = First n,aith rCO11' 7QI0 = Receiving stream low Bow criterion (cfs)
. _ ...nn, tWC% = Instresm watt coocentmuon .__ , _ , iv Stains: I - inactive, N -Newly Issued(To construct): I t •Active but not discharging;
. r..a,t .hrimo: ChV - Chmnie value: P • Mortality of stated tx;rcentaee at hietiust rnnccnitauorc. at - Performed by DEM Toz Eval Grouo: bt

North Carolina Division of Environmental Management
Water Quality Section
FnxArnnmpntal rrianroc Rranrh
To: Ruth Swanek
Through: Jimmie Ove t
Jay Sauber
;�&
From: Harold Quidley
Subject: SOD Studies - 1993 Yadkin River/Muddy Creek (3 stations)
(Station 1) Muddy Creek at SR 1485
(Sub -Basin 03-07-04) Davidson County 93/09/22
Avg. SOD rate -0.9482 gr/m2/day at 20°C
Avg. SOD rate-1.0356 gr/m2/d4y at 21.4°C (ambient temperature)
SOD range -0.4618 gr/m2/day to-1.6835 gr/m2/day at ambient temperature
(Station 2) Yadkin River 0.25 miles upstream from Grants Greek
(Sub -Basin 03-07-04) Davidson County 93/09/21
Avg. SOD rate-0.4184 gr/m2/day at 20°C
Avg. SOD rate -0.4716 gr/m2/day at 21.9°C (ambient temperature)
SOD range -0.3686 gr/m2/day to -0.5838 gr/m2/day at ambient temperature
(Station 3) Yadkin River 0.25 miles downstream from Grants Creek,
(Sub -Basin 03-07-04) Davidson County 93/09/09
Avg. SOD rate-2.7506 gr/m2/day at 200C
Avg. SOD rate-3.8404 gr/m2/day at 25.3°C (ambient temperature)
SOD range-3.6036 gr/m2/day to-4.2028 gr/m2/day at ambient temperature

2)d
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r
. Toxics Spreadsheet
. Facility Name Salisbury - Grants
p b
c u
z n
al
c r
n i
NPDES# 23884
1
10
32
360
2.8
16
' Qw (MGD) 7.5
7Q10s (cfs) 1051:'
1
1
3.44
2.7
IWC (%) 9.97
1
3.35
Rec'ving Stream Yadkin River
2.76
9
38
320
2.34
16
Stream Class C
1
1
1
rr
WET kt Q 10 70
1
19
1
594
6.45
6
1
10.35
1
8.29
1
5.35
1
4.81
1
34
39
480
4.9
5
1
6.4
1
8.8
1
6.2
1
16
28
340
3.2
3
5
3.5
1
0.5
20
33.4
432
3.5
5.1
0.5
2.6
0.5
0.5
1
22
44
500
11
6.1
2.5
4.3
2.9
5
0.5
4.7
0.5
14
44
154
2.28
4
0.5
18
32
284
2.92
5
0.5
18
32
214
2.76
5
2.38
3.88
0.5
3.76
0.5
5.16
2.5
10
24.8
368
5
4
2.5
5
2.5
5
2.5
5
0.5
12
24
370
2.6
2
0.5
2.98
DMR data only

Toxics Spreadsheet
0.5
1.99
0.5
0.5
0.5
0.5
0_5
2.94
3.22
12 25 316 1.14 3
1.28
0.5
6.32
2.42
number samples
49
13
13
13
39
13
max
5
34
44
594
11
16
standard
25
7
50
1 147
50
88
nh cu zn al cr ni
std dev
0.98
6.49
10.70
113.461
2.29
4.35
mean
1.26
16.46
30.55
364.00
4.41
6.17
cv
0.78
0.39
0.35
0.31
0.52
0.70
mult. fact.
1 2
1 2
1 1.9
1.7
1.7
1 3.1
Max. Pred.
10
1 68
1 83.6
11009.81
18.7
1 49.6
Allowable
250.8
1 70.2
1 501.E
1 1474.7
1 501.E
1 882.8
0
DMR data only

Toxics Spreadsheet
hg
fe
ag
CN
cd
0.1
640
2.5
5
0.2
0.1
780
1
530
0.1
810
0.1
790
2.1
5
0.13
0.1
730
0.1
780
0.1
810
0.1
0.1
860
3
80
0.05
.0.1
840
0.1
990
0.1
1030
0.1
72
0.1
420
2
40
381
0.1
440
0.1
1000
0.1
1000
0.1
0.1
525
5
5
0.1
0.1
350
0.1
409
0.1
380
0.1
0.1
480
4.2
5
0.2
0.1
390
0.1
450
0.1
420
450
0.39
1060
1.5
5
0.2
0.1
950
0.1
1040
0.1
1030
0.1
719
3.9
5
0.4
0.1
834
0.3
0.1
761
0.3
0.1
873
0.61
830
0.1
638
4
5
0.3
0.36
643
0.3
653
0.55
738
0.1
494
1.5
5
0.2
0.23
433
1.5
DMR data only

�
v
V
Toxics Spreadsheet
0.1
513
1.5
0.2
668
1.5
0.1
640
10 5
0.1
590
10
0.1
380
10
1.23
530
10
0.4
350
10
0.1
50
48
18
11
13
1.23
1060
10
80
381
0.012
1
0.06
5
2
ha fe 20 CN cd
0.22
231.34
3.46
22.86
1101.47
0.19
661.31
4.68
15.00
29.50
1.20
0.35
0.74
1.52
3.44
2.5
1.4
1 2.8
8
15
3.075
1484
28
640
5715
0.1
10.0
0.6
50.2
1 20.1
L, L- L-
DMR data only

out "?� d�
t,�-4 J,,j , J,�- �-
SU �ISr -C
Toxics Spreadsheet
number samples
49
13
13
13
39
13
50
48
18
1 1
13
max
5
34
44
594
11
16
1.23
1060
10
80
381
standard
25
7
50
147
50
88
0.012
1`''
0.06
5
2
nh cu zn al cr ni hn fe an CN cd
std dev
0.98
6.49
10.70
113.46
2.29
4.35
0.22
231.34
3.46 1
22.86
101.47
mean
1.26
16.46
30.55
364.00
4.41
6.17
0.19
661.31
4.68
15.00
29.50
cv
0.78
0.39
0.35
0.31
0.52
0.70
1.20
0.35
0.74
1.52
3.44
mult. fact.
2
2
1.9
1.7
1.7
3.1
2.5
1 1.4
2.8
8
15
Max. Pred.
10 1
68
1 83.6 11009.81
18.7
1 49.6
1 3.075
1 1484
1 28
1 640
-5 ++-
Allowable
250.0
70.0
500.0
1470.0
500.0
880.0
0.120
10 0
0.6
50.0
20.0
M
M
M
M
M
M
L
AL
AL
L
L
1'29
DMR data only

SGf�s6�
Toxics Spreadsheet
w vvI- F,
ryvav,fs Cree,�
number samples
49
13
13
13
39
13
50
1 48
1 18
1 1
13
max
5
34
44
594
11
16
1.23
1060
10
80
381
standard
25
7
50
147
50
88
0.012
1 1
1 0.06
5
2
pb cu zn all cr ni hg fe ag CN cd
std dev
0.98
6.49
1 10.70
113.46
2.29
4.35
0.22
231.34
3.46
22.86
101.47
mean
1.26
16.46
30.55
364.00
4.41
6.17
0.19
661.31
4.68
15.00
29.50
cv
0.78
0.39
0.35
0.31
0.52
0.70
1.20
0.35
0.74
1.52
3.44
mult. fact.
2
2
1.9
1 1.7
1.7
3.1
1 2.5
1.4
2.8
8
1 15
Max. Pred.
10
1 68
1 83.6
11009.81
18.7
1 49.6
1 3.075
1 1484
1 28
1 640
1 5715
Allowable
250.8
70.2
501.6
1474.7
501.6
882.8
0.120
10.0
0.6
50.2
20.1
M
M
M
M
M
M
L
AL
AL
I L
L
DMR data only