NC0020940_Wasteload Allocation_19930426

NPDES DOCIMENT !;CANNIN`: COVER SHEET
NC0020940
Murphy WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation r)
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Report
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
April 26, 1993
This document is printed on reuse paper - ignore awry
content on the rezzerise side

Refer : Basinwide / Streamline WLA File
Completed By Permits & Engineering
At Front Of Subbasin
PERMIT NO.: NC0020940
PERMITTEE NAME:
FACILITY NAME:
Town of Murphy
NPDES WASTE LOAD ALLOCATION
Murphy WWTP
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 0.925 MGD
Domestic (% of Flow): 99 %
Industrial (% of Flow): 1 %
Comments:
Previous permit was .975 MGD, actual permitted ATC flow is .925
MGD.
RECEIVING STREAM:Hiwassee
Class: WS-IV CA
rer
Sub -Basin: 04-05-02
Reference USGS Quad: G2SE
County: Cherokee
Regional Office: Asheville Regional Office
Previous Exp. Date: 6/30/93 Treatment Plant Class: II
(please attach)
Classification changes within three mile
p Lump
Requested by: Charles Alvarez
Date: 1/12/93
Prepared by: � Date: 1fz3 73
Reviewed by: �uz.�i-� �� CL/nO 1DV Da
t3fl D w /= VI; q.3
Modeler
Date Rec.
#
> A a-
t\ D-0'13
`13 t t
Drainage Area (mil ) 7 Z Avg. Streamflow (cfs):
7Q10 (cfs) %.7 Winter 7Q10 (cfs) //5 30Q2 (cfs)
Toxicity Limits: IWC l 5- % Acute hronic
Instream Monitoring:
Parameters lVc/14
Upstream Location
Downstream Location
Recommended Limits:
Monthly Average
Wasteflow (MGD): 0.925*
BOD5 (mg/1): 30.0
NH3N (mg/1): monitor
DO (mg/1):
TSS (mg/1): 30.0
Fecal Col. (/100 ml): 200
pH (SU):
Residual Chlorine (14/1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
Lead (µg/1):
Cadmium (4/1):
Chromium (µg/l):
Nickel (µg/1):
Copper (4/1):
Cyanide (µg/1):
Silver (14/1):
Zinc (µg/1):
28.0
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
Comments:
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HR 13'�•
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ROAD CLASSIFICATION
PRIMARY HIGHWAY
HARD SURFACE
LIGHT•DUTY ROAD. HARD OR
IMPROVED SURFACE
SECONDARY HIGHWAY
HARD SURFACE UNIMPROVED ROAD
Latitude 35°05'5 " Longitude 84°02'29"
Map # G2SE Sub -basin
04-05-02
Stream Class C
Discharge Class 99% Domestic. 1 % Industrial
Receiving Stream Hiwassee River
Design Q 0.925 MGD Permit expires 12 / 31 / 02
SCALE 1:24 000
0
1 MILE
0
D.---7--Y- 4
1
0
7000 FEET
1 KILOMETER
CONTOUR INTERVAL 40 FEET
Town of Murphy
NC0020940
Cherokee County
WWTP
•

$
Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION 1
Request #
Town of Murphy/Murphy WWTP
NC0020940
Domestic - 99%/Industrial -
Existing
Renewal
Hiwassee River
WS-IV CA
040502
Cherokee
Asheville
Alvarez
1/12/93
G2SE
1%
t�7 Li U V Lei'
MAR 2 4 1993
7A3s14VEllt REG ONALGOF�FICE
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
03.5490.0000
956
96.9
113
956
245
1.5
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Limits for fecal and total residual chlorine should be given because dilution is <331:1 (per SOP).
Anderson (ARO) was consulted on this change and said he would comment on the appropriateness
of a schedule for meeting these new limits. Monitoring for eight metals (found in the HWA) and a
slight change in the toxicity test (to 1.5%) were other changes in requirements.
Special Schedule Re uirements and additional comments from Reviewers:
, (
47: S is, -�rec Y`��e n ec ( (o �- fa. cc /,'t-,' r s le 0,, S: 1-r - !1 J rev, c"Fv ✓ct ✓ o
Sr&e)r) P ,rr re cre,�. -f m a���a( r�eS.'y,� flow .� 0.925-i4GD
Recommended by: /c�, Date:
Reviewed by
Instream Assessment:
Regional S
Permits & En,ie Bring• /C -e-
RETURN TO TECHNICAL SERVICES BY:
Date:
Date:
Date: i Zti Q
APR 1 7 1993
1
rc,s�l6rn)�

2
Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
Chronic toxicity (P/F):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml): 200
pH (SU):
Residual Chlorine (µg/1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
Lead (µg/1):
Cadmium (µg/1):
Chromium (14/1):
Nickel (µg/1):
Copper (4/1):
Cyanide (µg/1):
Silver (µg/1):
Zinc (14/1):
Chronic toxicity (P/F):
*ATC for 0.925 only.
PARAMETERS
Monthly Average
0.975
30.0
monitor
30.0
6-9
monitor
monitor
monitor
@1.1%
Monthly Average
WQ or EL
0.925*
30.0 EL
monitor
30.0
28.0
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
u 1.5%
Limits Changes Due To:
New procedures
New facility information
Change in stream classification
WQ
Parameter(s) Affected
fecal, chlorine, WET test
Wasteflow, and metals
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.

_ Facility Name MIAgmy Permit # LH) Pipe #
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 / % (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
4,i Sept:,tsampling /14.mi\Jttil.� ac . Effluent 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 cfs
Permitted Flow Q. 97�5 MGD Recommended by:
IWC / �/IvV D �D�oZ
Basin & Sub basin
Receiving Stream Mivtssee. I #'
County eggReKt6 Date 7//0
QCL PIF Version 9/91

03/10/93 ver 3.1 T OXICS REVIEW
Facility: MURPHY
NPDES Permit No.: NC0020940
Status (E, P, or M) : E
Permitted Flow: 0.9 mgd
Actual Average Flow: 0.5 mgd
Subbasin: '040502
Receiving Stream: HIWASSEE RIVER I PRETREATMENT DATA I----EFLLUENT DATA ----
Stream Classification: WS-IV I ACTUAL PERMITTEDI
7Q10: 96.9 cfs I Ind. + Ind. + 1 FREQUENCY
IWC: 1.50 % I Domestic PERMITTED Domestic 1 OBSERVED of Chronic
Stn'd / Bkg 1 Removal Domestic Act.Ind. Total Industrial Total 1 Eflluent Criteria
Pollutant AL Conc. 1 Eff. Load Load Load Load Load 1 Conc. Violations
(ug/1) (ug/1) 1 % (#/d) (#/d) (#/d) (#/d) (#/d) 1 (ug/1) (#vio/#sam)
Cadmium S 1.0
Chromium S 25.0
Copper AL 3.5
Nickel S 88.0
Lead S 12.5
Zinc AL 25.0
Cyanide S 2.5
Mercury S 0.006
Silver AL 0.03
Selenium S 2.50
Arsenic S 25.00
Phenols S 0.5
NH3-N C
T.R.Chlor.AL 17.0
Pollutant
Cadmium S
Chromium S
Copper AL
Nickel S
Lead S
Zinc AL
Cyanide S
Mercury S
Silver AL
Selenium S
Arsenic S
Phenols S
NH3-N C
T.R.Chlor.AL
92% 0.0 0.0 0.04 0.2 0.211 1 I
76% 0.0 0.0 0.06 1.2 1.233 1 1 I
82% 0.1 0.1 0.13 1.4 1.474 1 1 N
32% 0.2 0.1 0.28 1.7 1.860 1 1 P
81% 0.1 0.0 0.12 0.3 0.374 1 1 U
77% 0.2 0.2 0.38 0.7 0.940 1 1 T
59% 0.0 0.0 0.05 0.3 0.389 1 I
0.00 0.000 1 1 S
94% 0.0 0.03 0.2 0.167 1 1 E
0% 1 I C
0.000 1 1 T
0% 1 1 I
0% 1 I o
0% 1 I N
1 1 I
ALLOWABLE PRDCT'D PRDCT'D PRDCT'D MONITOR/LIMIT 1--ADTN'L RECMMDTN'S--
Effluent Effluent Effluent Instream 1 Recomm'd
Conc. using using Conc. Based on Based on Based on 1 FREQUENCY INSTREAM
Allowable CHRONIC ACTUAL PERMIT using ACTUAL PERMITTED OBSERVED 1 Eff. Mon. Monitor.
Load Criteria Influent Influent OBSERVED Influent Influent Effluent 1 based on Recomm'd ?
(#/d) (ug/1) (ug/1) (ug/1) (ug/1) Loading Loading Data 1 OBSERVED (YES/NO)
6.58
54.85
10.24
68.14
34.64
57.23
3.21
0.00
0.26
1.32
13.16
0.26
68.585
1714.625
240.048
6035.480
857.313
1714.625
171.463
0.412
2.058
171.463
1714.625
34.293
0.000
1165.945
0.767
3.453
5.610
45.650
5.467
20.955
4.915
0.000
0.456
0.000
0.000
0.000
4.047
70.950
63.613
303.249
17.037
51.836
38.239
0.000
2.402
0.000
0.000
0.000
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
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Monitor
Monitor Monitor
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Monitor Monitor
Monitor
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NCAC NO I L
NCAC NO I Y
Monthly NO 1 S
NCAC NO 1 I
I S
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0141

NPDES PRETREA9 ME T INFORMATION REQUEST FORM
FAC]ITY NAME: P1v (ZP NPDT: NO. NCOO j O °1 Gi 0
REQUESTER: 1)ot‘l'e.
•
DATE: / / 43 REGION : A.RD
PE 1IT CONDITIONS COVERING PRETREATMENT
This facility has no SIUs and should not have pretreatment language.
This facility should and/or is developing a pretreatment program.
Please include the following conditions:
Program Developient
Phase I due / /
Phase II due / /
Additional Conditions
(attached)
This facility is currently implementing a pretreatment program.
Please include the following conditions:
Program Implementation
Additional Conditions
(attached)
SIGNIFICANT INDUSTRIAL USERS' (SIUs) CONTRIBUTIONS
SIU FLOW - TOTAL:
- COMPOSITION: TEXTILE:
3 SWs METAL FINISHING:
OTHER:
A cf.) rmAci
. 0 31 .0V &1 MGD
• MGD
.ost _sway M®
MGD
MGD
MGD
tEAnwOxxs REVIEW
1
PASS
AW
P THROUGH DAILY LOAD IN LBS/DAY ACTUAL 'E` peA,*
1 DOMESTIC PERMITI INDUSTRIAL % REMOVAL
Cd iS6% .03• .181 .OaZ'L .01 9Z
Cr 1LI. 11 .0'I 1.193 .0096 dn. 76
Cu ZS• °79„SA_1.3941 .0KI 8 .or $2
Ni 39. 91 . 2.0 1.640 .033e .0S 32.
Pb 488. Zo O _ .29Y ..OZo 0 .oy 91
Zn lY6. '11 . 2.2. .720 .05'09 .16 _77
CN .'!o .O4 .TY9 AI _ _
Phenol .0 034fZ
Other Aci 1. o I . I b 7 .0 317 • f'a_
RECEIVED: ?• / /
REVIEWS BY:
t
Fro wt 'Fro.
DMR Nt.Ja
3 /S /93,

GKEX88/MP
COMPLIANCE EVALUATION ANALYSIS REPORT
Oi/i2/93
PAGE i
PERMIT--NCO020940 PIPE--OOi REPORT PERIODi 9112-92ii LOC--- E
FACILITY--MURPHY WWTP, TOWN OF DESIGN FLOW-- .9750 CLASS--2
LOCATION--MURPHY REGION/COUNTY--0i CHEROKEE
50050 003iO 00530 00610 TGP3B 000iO 00400 00600
MONTH Q/MGD BOD RE%/T%% NH3+NH4- CERI7DPF TEMP PH TOTAL N
LIMIT F .9750 F 30.00 F 30.0 NOL NOL NOL 9.0 6.0
91/12 .5213 i2.60 i4.8 3.30 i 13.86 6.9-6.6
92/01 .5359 i4.60 9.8 .86 ii.60 6.9-6.6
92/02 23.85 7.0 .00 12.15 7.3-6.8
LIMIT F .9750 F 30.00 F 30.0 NOL NOL NOL 9.0 6.0 NOL
92/03 .5356 13.00 4.0 .50 i 13.58 7.1-6.7 i0.400
92/04 .4444 7.80 4.5 i.85 16.95 6.9-6.6
92/05 .4606 i0.40 9.5 3.60 18.92 7.0-6.8
92/06 .4956 12.00 6.0 .65 i 19.98 6.9-6.7
92/87 .4856 7.20 6.0 6.30 23.42 7.1-6.9
92/08 .4938 6.i5 i.5 6.80 23.05
92/89 .4803 6.45 3.5 .93 i 23.68 7.1-6.5 6.974
9200 .4655 8.i5 7.0 .O0 18.25
92/ii
.5072 7.25
I n
.50
7.4-6.7

'
AVERAGE a 9 9 E40.78
0t .6.7 2.10 f 17.60 ...............
8.687
` ti •�• t• r}•r� 30 4 9 2 r, i. �r d 2.. 20 ..i 400 40.400
400
#''�f'•{a� .E. i'iE.�i"i .9250 ,.. t .t ..� � f 1 1 �i � 1 .c..: ., :•. a: f .: •} ,. s. .,
.t .... I ..t i.. t.
MINIMUM
INIM♦ .0460 2.50
a}04.0 #:{ H"N '44.00 6.500 6. : 7
S
MG/L 9A DEG .: C f 1. M G.} #...
GK E«XGG1rMP
COMPLIANCE EVALUATION ANALYSIS REPORT
PAGE 9
,r •' 4 2 rr 9 f►
•• tir 1 •1J J f• r f. r f r J J REPORT
7T PERIOD: 9 i i 2-924 i LOC.u..«— r
{{ i #'E E M:ET........i C0 .w-'. F}4>~ y{S!}P:#:#~E#:::........}tip 1 REFt: E'=: i DESIGN 9 } j s•fc-
E-� A[.: 1 L 1 •# y... — r1t irE:: E..#y WWTP , TOWN OF FLOW-- ..— .9750 CLf'{a:• f:• ........a}
LOC:AT1fiN_.....4t.jR#::fE••EY REEYION/COUNTYw.__0i CHEROEKEE
00665
MONTH #:r#••#O, ....•t'E ..
#: I...::EMT
9'f{1 S: ! 2
LIMIT NOL
92/03 1.3700
9 2 r r} i 7
9 2./ )8
f..} r ! i 0 r: •f
2 !
.}J} i 0
92 r, .1 i
2.0000

AVE R t (Y #:» • # .i 6 ►8.1.5 0

`
GKEX88/MP
COMPLIANCE EVALUATION ANALYSIS REPORT
0i/i2/93
PAGE i
PERMIT--NCO020940 PIPE--00i REPORT PERIOD; 9012-9iii LOC---E
FACILITY--MURPHY WWTP, TOWN OF DESIGN FLOW-- .9750 CLASS--2
LOCATION--MURPHY REGION/COUNTY--01 CHEROKEE
50050 003i0 00530 00610 TGP3B 000iO 00400 00608
MONTH Q/MGD BOD RE%/T%% NH3+NH4- CERI7DPF TEMP PH TOTAL N
LIMIT F .9750 F 30.00 F 3O.O NO; NOL 9.0 6.0
9002 12.05 8.8 1.30 14.05 7.1-6.7
LIMIT F .9750 F 30.00 F 30.0 NOL NOL NOL 9.0 6.0
9i/0i .4487 15.50 11.0 1.60 i 12.27 6.9-6.7
91/02 .022 15.40 13.0 6.30 ii.85 7.0-6.8
91/03 .5043 iQ.O0 i i . 0 4.75 12.50 7.1-6.5
9i/04 .504 i5.75 9.4 5.80 i i5.80 7.2-6.6
LIMIT F .9750 F 30.00 F 30.0 NOL NOL NOL 9.0 6.0 NOL
9i/05 ^6336 13.90 6.8 4.20 i8.45 6.9-6.8 7.00
91/06 .4908 5.40 1.4 4.55 i 22.47 6.9-6.7
91/07 .309 5.70 3.8 5.60 24.i4 6.9-6.6
91/08 .5629 ii.45 7.0 7.40 23.42 7.1-6.7
9i/09 .4961 16.20 15.6 i0.20 i 23.05 7.2-6.9 8.700
0/10 .4848 i2.55 9.5 i0.05 20.00 7.i-6.8
04/4-1 13-05 22.3 4.5O 16.30 6.9-6.7 8.870

AVERAGE .4994 i2^91
MAXIMUM ^9470 22.00
MINIMUM .2450 4.50
UNIT M GD MC/L
C;le, EX88/MP
9.9
29.0
.8
MG/L
5.52 i i7^85 _______— 8.460
i0.20 i 24.60 7.200 8.870
1.3O i 10^20 6.500 7^8i0
MG/L 9A DEG.0 %U /L
COMPLIANCE EVALUATION ANALY%I% REPORT
0i/i2/93
PAGE 2
PERMIT--NC0020940 PIPE--00i REPORT PERIOD: 90i2.... 91ii LOC---E
FACILITY .... .... MURPHY WWTP, TOWN OF DE%IGN FLOW-- .9750
LOCAVE ON--MURPHY REWION/COUNTY--Oi CMEROKETE
00665
MONTH PHO%.... TOT
LIMIT
90/i2
L%MIT
9i/0i
9i/02
9i/03
9i/04
LIM%T NOL
91/05 .900O
9i/06
9i/07
9i/08
9i/09 1.4000
91/i0
9jzj1 i.4800
AVERAGE i.2600
MAXIMUM i.4800
MINIMUM .9000
UNIT MOIL

YKEX88/MP
COMPLIANCE EVALUATION ANALYSIS REPORT
0i/i2/93
PAGE i
PERMIT--NC0020940 PIPE--00i REPORT PERIOD: 8912-90ii LOC--- E
FACILITY--MURPHY WWTP, TOWN OF DESIGN FLOW-- .9750 CLASS--2
LOCATION--MURPHY REGION/COUNTY--0i CHEROKEE
50050 003iO 00530 00610 TGP3B 0OOiO 00400 00600
MONTH Q/MGD BUD RE%/T%% NH3+NH4- CERI7DPF TEMP PH TOTAL N
LIMIT F .9750 F 30.00 F 30.0 NOL NOL NOL 9.0 6.0
8902 i4.40 8.0 .39 i 11.00 7.0-6.6
9O/Oi
90/02
9O/O4
LIMIT F .9750 F
9O/O5
9O/06
9O/07
90/08
9O/09
9O/iO
9O/ii
AVERA0E
6.40 3.2 .52 iO.07 6.8-6.5
8.60 i6.0 .00 ii.77 7.0-6.7
i2.60 ii.5 .21 15.10 6.7-6.5
3O.00 F
22.00
30.0 NOL NOL NOL 9.0 6.0 NOL
i7.O 5.00 19.50 7.1-6.7 9.920
15.80 15.5 .21 i 21.35 6.9-6.5
i3.00 i3.0 .71 24.30 6.9-6.6
'
14.20 11.5 3.35 24.67 7.1-6.9
9.40 8.0 .30 i 7.0-6.8 6.300
i8.80 i2.i 2.48 19.36 6.9-6.5
i9.45 13.4 2.85 15.32 7.0-6.9 8.020
14.05 11.7 1.44 i 17.70 ........ 8.080

MAXIMUM .... .... .... .... .... .... .... .... 22^00 23.0 5^00
M�NIMu�^. ..... .... .... .... .... .... .... 6^00 ^0 ... E%%THAN
UNIT MCID M(."/L Mcf/L MG/L
�
' 1 2:>.bn /.lnw r.��w
i 6^70 6.500 6.300
9A DEG.0 IT MCl/L
("tKEX88/MP
COMPLIANCE EVALUATION ANALY%I% REPORT
0i/i2/93
PAGE 2
PERMIT- --- NC0020940 P%PE.... .... 00i REPORT PERIOD` 89i2.... 90ii LOC---E
IF- ACILITY--MURPHY WWTP, TOWN OF DE%%GN FLOW-- .9750 CLA%%.... .... 2
LOCATION .... .... MURPHY RE�ION/CQUNTY---- -0i CHEROKEE
00665
MONTH PHO%-TOT
LIMIT
89/i2
90/0i
90/02
90/04
LIMIT NOL
90/05 .2700
90/06
90/07
9O/08
90/09 2^9800
90/i0
90/11 2.3380
" .. ~
�E i.8600
MAXIMUM 2.9800
MINIMUM .2700
UNIT MG/L

SOC PRIORITY PROJECT: No X
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: Charles Alvarez
R;0'\\
DATE: January 21, 1993
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY Cherokee
PERMIT NUMBER NC0020940
PART I - GENERAL INFORMATION
1. Facility and Address: Town of Murphy
Post Office Box 130
Murphy, N. C. 28906
2. Date of Investigation: June, 1992
3. Report Prepared By: W. E. Anderson
4. Persons Contacted and Telephone Number: Cloe Moore, Mayor
704-837-2510
5. Directions to Site: From the intersection of US Highway 19/129 and
NCSR 1408, travel north on NCSR 1408 approximately 0.4 mile to the
treatment facility on the right.
6. Discharge Point(s), List for all discharge points:
Latitude: 35° 05' 51"
Longitude: 84° 02' 29"
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
U.S.G.S. Quad No. 141-SE(G2SE) U.S.G.S. Quad Name Murphy
7. Site size and expansion area consistent with application? Yes
Yes No If No, explain:
8. Topography (relationship to flood plain included): Fairly
steep -above flood plain.
Page 1

•
9. Location of nearest dwelling: Greater than 500 feet.
10. Receiving stream or affected surface waters: Hiwassee
River(Hiwassee Lake)
a. Classification: "C"
b. River Basin and Subbasin No.: Hiwassee 040502
c. Describe receiving stream features and pertinent downstream
uses: The discharge point is just upstream of the usual pool
elevation of the lake.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted 0.975 MGD (Ultimate
Design Capacity)
b. What is the current permitted capacity of the Wastewater
Treatment facility? 0.975
c. Actual treatment capacity of the current facility (current
design capacity 0.975 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
N/A
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: The facility
consists of a conventional extended aeration plant in
parallel with an Aeromod unit, flow splitters, clarifiers,
effluent chlorine contact tank, flow meter, aerobic digester,
sludge drying beds.
f. Please provide a description of proposed wastewater treatment
facilities: N/A
g. Possible toxic impacts to surface waters: Chlorine, chemicals
associated with metal finishing wastes.
h. Pretreatment Program (POTWs only): Yes
in development approved XXX
should be required not needed
2. Residuals handling and utilization/disposal scheme: Landfill
a. If residuals are being land applied, please specify DEM
Permit Number
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP XXXX PFRP OTHER
Page 2

c. Landfill: Cherokee County
d. Other disposal/utilization scheme (Specify): N/A
3. Treatment plant classification (attach completed rating sheet): II
4. SIC Codes(s): 4952
Wastewater Code(s) of actual wastewater, not particular facilities
i.e., non -contact cooling water discharge from a metal plating
company would be 14, not 56.
Primary 01 Secondary
Main Treatment Unit Code: 050-1
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only)? N/A
2. Special monitoring or limitations (including toxicity) requests:
None
3. Important SOC, JOC, or Compliance Schedule dates: (Please
indicate) None
Submission of Plans and Specifications
Begin Construction
Complete Construction
Date
4. Alternative Analysis Evaluation: Has the facility evaluated all
of the non -discharge options available. Please provide regional
perspective for each option evaluated.
Spray Irrigation: Insufficient land area.
Connection to Regional Sewer System: This is a regional sewer
system.
Subsurface: Insufficient land area.
Other disposal options: None
5. Other Special Items: None
Page 3

PART IV - EVALUATION AND RECOMMENDATIONS
This is a request for permit renewal without modification. There
have been no changes in the facility nor the receiving stream.
Renewal of the permit is recommended.
Signature of Report Preparer
Water Quality Regional Supervisor
Date
Page 4

J Mt
. . , •
,
xeka
'70
•
1%
." (
??pl
`'it
I \ 1/4„/ L.
7.5 MINUTE SERIES (TOPOGRAPHIC) 141—SE 6
'11 500 000 FE E I 172
t -
57.
at,lre4r.r. 1%, ' -
773 84°00'
35°07'30'.
. ,
Hanintr, pmoria 1 rh
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4-
3089
530 000
FEET
3188
3887
3886
)o,
z
c\-

ITEM
(1)
(2)
(3)
10*k ! 1NG :;CALL f-U1( CLASSIFICA l HUN OF 1-ACI1_11•1ES
Name of Plant: Pahl off- tiv
Owner or Contact Person: CI P
Mailing Address: Po 8o� 0 Al`.,
County: (' Ae,,dkee..
NPDES Permit No. NCO0 ,zo / Lto
:;11ssueDate R P P .
z::Eicist ng - t acility__
AP la-
Telephone: 70 LI 3 7 -2s-10
Nondisc. Per. No.
Expiration Date:
New Facility
Date ) /%
Office '�Y pfi?2L
dOiteSiewed {.Train " & ' CetrS� ` • .Reg-
& >.Cert) Central Office •
C.4 r j i>))
Plant Class: -(circle one)
Grade
ll III IV Total Points•.3f?
POINTS
P (see definition 32)
Industrial .pretreatment•' Units and/or
Industrial :Pretreatment -Program
(see definition' No.`433) 4
DESIGN FLOW OF PLANT IN GPD
(not applicable to non -contaminated cooling waters, sludge
handling facilities for water purification plants, totallym
closed cycle:systes (def.-No. 11), and facilities:!
consisting only :(
of 41tein (4) "(d) or Items 4 ' ' r •
.
0 -• 20,000 ) (dI ii an7 j11) (d))
20,001 — 50,000 1
50,001 — 100,000:: 2
100.001 -- • 250.000 i . 3
250.001 — 500,000 4
500.001 —1,000.000
1,000,001 -• 2,000.000
2.000,40i and u 10
( p) " rate 1 point additional for each
200.000 gpd capacity up to a
maximum or 30
Design Flow (gpd) :
RELiMiNARY UNITS
(a) Bar Screens
or 1
(b) Mechanical Screens, Static Screens or
Comminuting Devices
(c) Grit Removal
or
(d) Mechanical or Aerated Grit Removal
(e) Flow Measuring Device
or
(I) Instrumented Flow Measurement
(g) Peeaeration
(h) Influent Flow -Equalization
(i) Grease or Oil Separators - Gravity
Mechanical
Dissolved Air Flotation.
(j) Prechtorination
:4) PRIMARY TREATMENT UNITS
(a) Septic Tank (see definition no. 43) 2
(b) Imhoff Tank
(c)
(d)
5
2
Primary Clarifiers
Settling Ponds or Settling Tanks for Inorganic
Nontoxic Materials (sludge handling facilities
for water purification plants. sand. gravel,
:tone, and other mining operations except
;r:creational activities such as gem or gold
2
2
3
8
5
5
5
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage ` ."
(i)Aeration • High Purity Oxygen System
Diffused Air System
Mechanical Air System (fixed,
itoating or rotor)
Separate Sludge Reaeration 3
(ii) Trickling Filter
High Rate 7
Standard Rate 5
Packed Tower 5
(iii) Biological Aerated Filter or Aerated
Biological Filter 10
(iv) Aerated Lagoons 10
(v) Rotating Biological Contactors 10
(vi) Sand Filters -
intermittent biological 2
recirculating biological 3
(vii) Stabilization Lagoons
(viii)Clarifier
(ix) Single stage system for combined
carbonaceous removal of BOO and
nitrogenous removal by nitrification
(see def. No. 12) (Points for this item
have to be in addition to items (5) (a)
(i) through (5) (a) (viii) 8
(x) Nutrient additions to enhance BOD
removal
(xi) Biological Culture ("Super Bugs") addition
to enhance organic compound removal 5
(b) Nitrogenous Stage
(i) Aeration - High Purity Oxygen System 20
Diffused Air System 1 0
Mechanical Air System (fixed,
floating• or rotor)
Separate Sludge Reaeration 3
(ii) Trickling Filter -
High Rale
Standard Rate
Packed Tower
(iii) Biological Aerated Filler or Aerated
Biological Filter
(iv) Rotating Biological Contactors
(v) Sand irilter•
inlernlillent bioloyrcat
recirculating bioto,?icat
20
(kir) •
5
8
7
5
5
10
10
2
3
8

r,) TI_r.7lArnY OR ADVANCED TnEATM[_NT UN!!
Activated Carbons Beds -
without carbon regeneration 5
with carbon regeneration .. 1.5_
Powdered or Granular Activated Carbon Feed -
without carbon regeneration
with carbon regeneration
Air Stripping
Oenitrification Process (separate process)
Eiecirodialysis
Foam Separation
Ion Exchange Land Application of *Treated Effluent
(see definition no. 22b) (not applicable for
sand, gravel, stone and other similar mining
operations)
(i) on agriculturally managed sites (See def.
No. 4) 10
(ii) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors •
and similar fixed nozzle systems) 4
(iii) by subsurface disposal (includes low pressure
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tion lines only) 4
Microscreens 5
Phosphorus Remoial by Biological Processes
(See def. No. 26) 20
(k) Polishing Ponds - without aeration 2
with aeration 5
(I). Post Aeration - cascade 0
diffused or mechanical ... 5
(m) Reverse Osmosis 5
(n) Sand or Mixed -Media Filters - low rate 2
high rate 5
(o) Treatment processes for removal of metal
cyanide
(p) Treatment processes for removal of toxic
materials other than metal or cyanide
(a)
(b)
(c)
(d)
(e)
(0
(g)
(h)
(i)
G)
or
SLUDGE TREATMENT
Sludge Digestion Tank - Heated 10
Aerobic
Unheated 3
(b) Sludge Stabilization (chemical or thermal) 5
(c) Sludge Drying Beds - Gravity l2)
Vacuum Assisted 5
(d) Sludge Elutrialion 5
(e) Sludge Conditioner (chemical or thermal) ... 5
(f) Sludge Thickener (gravity) .. 5
(g) Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) (i) 8
Sludge Gas Utilization (including gas storage) .... 2
Sludge Holding Tank - Aerated ... 5
Non -aerated 2
Sludge Incinerator - (not including activated
carbon regeneration) 1 0
Vacuum Filter, Centrifuge or Filter Press or other
similar dewatering devices 1 0
6) SLUDGE DISPOSAL (including incinerated ash)
(a) Lagoons 2
(b) Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit . . . 1 0
-by contracting to a land application operator who
holds the land application permit 2
-land application of sludge by a contractor who does
not hold the permit for the wastewater treatment
facility where the sludge is generated 1 0
(c) Landfilled (burial) 5
l) OISINFCCTION
(a) Chlorination . _ . 5
(b) Dechlorination 5
(c) Ozone
(if) f i.lifi.il11u,
(a)
15
(10) CI-IEf,MtCAL AUDITION SYSTEM (S) (Sec definition ryo 9)
(nof applicable to chemical additions rated as ilem
(3) (j). (5) (a) (xi). (6) (a). (6) (b), (7) (b). (7) (e).
(9) (a). (9) (b). or (9) (c) 5 points each: List:
5
5
5
5
(11) MISCELLANEOUS UNITS
(a) Holding Ponds, Holding Tanks or Settling Ponds
for Organic or Toxic Materials including wastes
from mining operations containing nitrogen and/or
phosphorous compounds in amounts significantly
grea'ler Mart is . common •for domestic wastewater 4
(b) Effluent Flow Equalization (not applicable to storage
basins which are inherent in land application systems)2
(c) Stage Discharge (not applicable to storage basins
inherent' in land application systems 5
(d) Pumps . —
(e) Stand -By Power Supply 3
(f) Thermal Pollution Control Device 3
TOTAL POINTS
CLASSIFICATION
38'
ClassI�..............................�..�...�............. 5 - 25 Points
Class ll.............»......----- ........ 26- 50 Points
Class Iii............ ............... 51- 65 Points
Class iV....................... 66- Up Points
Facilities having a rating of one through four points. inclusive,
do not require a certified operator. Classification of all other
facilities requires . a comparable grade operator in responsible
charge.
1 5 Facilities having an activated sludge process will be assigned
a minimum classification of Class II.
(h)
(i)
(j)
(k)
5
15
5
10
5
5
5
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class iI.
Facilities having treatment processes for the biological removal
of phosphorus will be assigned a minimum classification of Class
If I. . •
In -plant processes and related control equipment which are an
integral part of industrial production shall not be considered waste
treatment. Likewise, discharges of wastewater from residences
having a design flow of 1.000 gpd or less, shall not be subject to
rating:.
ADDITIONAL COMMENTS;