NC0024911_Wasteload Allocation_19950627

NPDES DOCUMENT SCANNING COVER !MEET
NC0024911
MSD Buncombe County WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation:,
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Report
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
June 27, 1995
This; document is printed on reuse paper - ignore ally
content on the reYerse side

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0024911
PERMITTEE NAME:
FACILITY NAME:
Metropolitan Sewerage District of Buncombe
MSD of Buncombe County
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 40.0 MGD
Domestic (% of Flow): 86 %
Industrial (% of Flow): 14
Comments: see i�i; tF jov w�ir�— io
n(Zf ( i. C -Wo rzrir13
RECEIVING STREAM: French Broad River
Class: C
LOOK PI r tts11, fiSir I
Sub -Basin: 04-03-02
Reference USGS Quad: E8NE
County: Buncombe
Regional Office: Asheville Regional Office
(please attach)
Previous Exp. Date: 5/31/94 Treatment Plant Class:
Classification changes within three miles:
Requested by:/?
Prepared by:
Reviewed bay:
S
Susan Wilson
J)
Date: 12/7/93
Date: //././7-
Dae: /o2i!CIS
Modeler
Date Rec.
#
31,r.3
121 Z 1 q3
1W64
Drainage Area (mi2
) 7 (c,, Avg. Streamflow (cfs): o
7Q10 (cfs) 6 ( Winter 7Q10 (cfs) 57S 30Q2 (cfs) ye/
i
Toxicity Limits: IWC / Z %r 'f Acute/ s'
(7h 1 /}ram C/44 .4. /11w,..wl t ` o
Instream Monitoring:
Parameters
Upstream \(
Downstream Y
Location iw0 I11-, i,�gli
Location r 5(./ / hE f_ v f-P
Effluent
Characteristics
Summer
Winter
CBOD5 (mg/1)
25
NH -N (mg/1)
D.O. (mgfl)
„,,,,, ,-i,,,
TSS (mg/1)
3 V
F. Col. (/100 ml)
L(1)
pH (SU)
c.. __ i
�C',A51,.)
13
(U4 )
/; 11-"r- �"�Y,.
:
G(7t4-
,4.0,,,L,J i
L 4,,,y_
P
f SAi.,„.(.....�.
4
f
,
ti !
/
/ 7
'
Comments:

SLE/AGE' LAGOON
SLUDGE LAGOON
OVE cm,
VACIMERATOR
CONSRRUCIVA
BELT WV?
PRISSL
1441v01JNC CRAOTY EYEL
FACIUnES THICKEN
AOMM, BLOC:
2 MOO DIGESTED SLUDGE
SOL IDS
PPoM,4RY MrCROSGR
ER MAIN
FL Ow

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
MSD of Buncombe County
NC0024911
86% Domestic /14 % Industrial
Existing
Renewal
French Broad River
C
040302
Buncombe
Asheville
Wilson
12/8/93
E8NE
Request # 7684
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
966
466
595
2140
884
12%
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility is requesting renewal of existing NPDES permit with no modifications. Instream
Assessment recommends that existing limits be renewed w/ CBODS limit of 25 mg/1 per the
previous request of the facility and ARO.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:
Reviewed by
A, /7,4
Date: 5/8/95
Instream Assessment: Date:
Regional Supisor: r Date:
Date:
Permits & Engineerin
RETURN TO TECHNICAL SERVICES BY: J UN 0 9 1995
is!
f40)).
MAY 1 61995

2
CONVENTIONAL PARAMETERS
Existing Limits:
Monthly Average
Summer Winter
Wasteflow (MGD): 40
CBOD5 (mg/1): 25
NH3N (mg/1): monitor
DO (mg/1): monitor
TSS (mg/1): 30
Fecal Co1. (/100 m1): 1000
pH (SU): 6-9
Residual Chlorine (14/1): monitor
Temperature (C): monitor
TP (mg/1): qrtrly
monitoring
TN (mg/1): qrtrly
monitoring
Recommended Limits:
Monthly Average
Summer Winter WQ or EL
Wasteflow (MGD): 40
CBOD5 (mg/1): 25
NH3N (mg/1): monitor
DO (mg/1): monitor
TSS (mg/1): 30
Fecal Co1. (/100 ml): 200
pH (SU): 6-9
Residual Chlorine (14/1): monitor
Temperature (C): monitor
TP (mg/1): qrtrly
monitoring
TN (mg/1): qrtrly
monitoring
Limits Changes Due To: Parameter(s) Affected
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures
New facility information
(explanation of any modifications to past modeling analysis including new flows, rates, field data,
interacting discharges)
(See page 4 for miscellaneous and special conditions, if applicable)

3
Type of Toxicity Test:
Existing Limit:
Recommended Limit:
Monitoring Schedule:
Existing Limits
Chromium (ug/1):
Copper (ug/l):
Nickel (ug/1):
Lead (ug/1):
Zinc (ug/l):
Cyanide (ug/1):
Silver (ug/l):
Recommended Limits
Chromium (ug/1):
Copper (ug/l):
Lead (ug/1):
Zinc (ug/1):
Cyanide (ug/1):
Silver (ug/1):
TOXICS/METALS
Phase 1) Chronic Ceriodaphnia Qrtrly
Phase 2) Acute Fathead Minnow 24hr -No Significant
mortality* for discharge into a flume
Phase 1) Chronic @ 12%
Phase 2) Acute Fathead Minnow @ 90%
Phase 1) Chronic @ 12%
Phase 2) Acute Fathead Minnow @ 90%
FEB MAY AUG NOV
Daily Max.
monitor
monitor
monitor
monitor
monitor
monitor
monitor
Daily Max.
Qrtrly monitor
monitor
Qrtrly monitor
Qrtrly monitor
43
Qrtrly monitor
WQ
WQ or EL
6/1 S/73 , A✓ -Co(
LON6- - � � gni ifY1, ViTo6 iN(r PLAN ir)-& rna�i vu 5 � f ,�Pek c(AS(055e, 4 TA) �rf
:Pt" C%c'60d66ior1 rv+4h Pm-NA:Inv/xi, .somrr e v,.i-Ivr; ttv curl y be dvappec/,
AAALimits Changes Due To; Parameter(s) Affected•/)J!
Change in 7Q10 data O� _
Change in stream classification — /7�
Relocation of discharge
Change in wasteflow
New pretreatment information
Failing toxicity test
Other (onsite toxicity study, interaction, etc.) Cn
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.
OR
No parameters are water quality limited, but this discharge may affect future allocations.

4
INSTREAM MONITORING REQUIREMENTS
Upstream Location: 1000 f f.- ,490,1 ou-t
Downstream Location: 1 500 f, b l � -FA 11•
Parameters: Dissolved Oxygen, 'Temperature, Conductivity
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility de)nonstrated 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 or N)
(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 N) If yes, explain with attachments.

PHASE 1
Facility Name MSD-Buncombe County Permit # NC0024911 _ Pipe # 001
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 _12 % (defined as treatment two in the North Carolina procedure document). The permit holder shall
perform quarter(v 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
FEB MAY AUG NOV . 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 chemica]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 466 cfs
Permitted Flow 40 MGD IWC 12 % R ommended by:
Basin & Sub -basin FRB02 ill, /)41-itAt
.
Receivng Stream FRENCH BROAD R.
County BUNCOMBE ate 5/8/95
QCL P/F Version 9/91

PHASE 2 - Based on fish protection in the flume
Facility Name MSD- Buncombe Co Permit # NC0024911 _ Pipe # 001 _
ACUTE TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North Carolina
Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A Single Effluent
Concentration." The monitoring shall be performed as a Fathead Minnow (Pimephales promelas) 24 hour static
test, using effluent collected as a 24 hour composite. The effluent concentration at which there may be at no time
significant acute mortality is 90% (defined as treatment two in the North Carolina procedure document). Effluent
samples for self -monitoring purposes must be obtained during representative effluent discharge below all waste
treatment. The first test will be performed after thirty days from the effective date of this permit during the
months of FEB MAY AUG NOV .
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 TGE6C.
Additionally, DEM Form AT-2 (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 either these monitoring requirements 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 40 MGD
IWC %
Basin & Sub -basin FRB02
Receiving Stream FRENCH BROAD R.
County BUNCOMBE
mmended by:
A2, /)e'Veg
ate V 5/8/95
** This discharge is into a flume. No min. flow requirement in the flume. 7Q10 of the French Broad River is 466
cfs.
QAL P/F Fathead 24 Version 9/91

MSD-BUNCOMBE CO JMN
FRENCH BROAD RIVER 5/8/95
040302
Facility is requesting renewal of existing NPDES permit with no modifications or
expansions. Current limits are secondary, with BOD being measured in carbonaceous
BOD5 ,at the request of the facility back in 1992. Also have fecal limits, and effluent
monitoring for Cn, Cr, Cu, Zn, Ag,and Pb. Quarterly Chronic tox test of 11.7%.
Review of compliance data shows that facility has been pretty well operated, with a few
fecal violations back in 1993, 1992. No other limits have been exceeded. Only monitoring
for metals and no values that exceed the allowables (except for copper) have been noted.
APAM data (in pg/1)
1992 1994
Aluminum 290 100
Antimony 150
Chromium 18 18
Copper 70 20
Lead 7
Nickel 18
Silver 8 -
Zinc 155 101
Barium 290 -
Chloride 154,000 108,000
Cyanide 7 20
Fluoride 1070 950
Upon renewal, existing limits will be renewed with revision of fecal to
200, tox analysis indicated that cyanide should be limited @ 43 ug/l,
monitoring for copper and silver (?), and monitoring should be dropped for
chromium and lead or reduced to quarterly monitioring.
Will recommend the most conservative limits and monitoring for metals,
until able to consult with Pretreatment Unit.

MSD-BUNCOMBE CO
UPSTREAM
DOWNSTREAM
MONTH Temp DO Saturation Fecal Conductivity Temp DO Saturation Fecal Conductivity
Oct-93
15
8.3
82%
510
115
17
8
83%
167
306
Sep-93
22
7.5
86%
555
81
22
7.3
84%
258
136
Aug-9;
23
7.1
83%
1155
82
23
7
82%
523
126
Jul-93
25
7
85%
819
64
25
6.9
84%
409
115
Jun-93
21
7.4
83%
589
52
21
7.4
83%
764
56
May-93
18
7
74%
1191
36
17
6.8
70%
1410
35
Apr-9)
13
9.3
88%
768
41
13
9
85%
742
56
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Notes
ups-1000 ft above outfall
dwn-1500 ft below outfall
DO of 4.8 mg/I upstrm in 5/93
DO of 4.7 mg/I dwnstrm in 5/93
NC0024911 4/27/95

UPSTREAM
DOWNSTREAM
MONTH Temp DO Saturation Fecal Conductivity Temp DO Saturation Fecal Conductivity
Oct-92
13
8.5
81%
325
31
13
8.5
81%
843
33
Sep-92
20
7.8
86%
774
62
20
7.7
85%
830
75
Aug-92
21
7.5
84%
621
57
21
7.5
84%
1392
82
JuI-92
22
7.4
85%
377
40
23
7.4
86%
944
67
Jun-92
19
8.3
90%
777
37
19
8.3
90%
976
38
May-92
17
8.2
85%
1084
40
17
8.2
85%
1916
49
Apr-92
13
9.2
87%
513
43
12
8.9
83%
850
36
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Notes ups-1000 ft above outfall
dwn-1500 ft below outfall
NC0024911 4/27/95

UPSTREAM
DOWNSTREAM
MONTH Temp DO Saturation Fecal Conductivity Temp DO Saturation Fecal Conductivity
Oct-94
14
8.5
83%
304
51
14
8.4
82%
444
50
Sep-94
19
8
86%
380
50
19
7.8
84%
511
51
Aug-94
21
7.5
84%
585
49
21
7.5
84%
1091
52
Jul-94
22
7.2
82%
1843
52
22
7
80%
2108
56
Jun-94
22
7.2
82%
2521
54
22
6.7
77%
1773
93
May-94
17
8
83%
863
51
18
8
85%
677
54
Apr-94
16
8.3
84%
1563
45
16
8
81 %
2062
47
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
ups _ too 0 -('f-. eiwn av rt a It
pwgi — 1 Sob -rt. kJ. wf -&-( l
DO 4.5 /ft irMLi4 Chif
NC0024911
4/27/95

MSD--BUNCOMBE CO
Residual Chlorine
7010 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (UG/L)
IWC (%)
Allowable Concentration (ug/l)
Fecal Limit
Ratio of 7.5 :1
Ammonia as NH3
(summer)
466 7Q10 (CFS)
40 DESIGN FLOW (MGD)
62 DESIGN FLOW (CFS)
17.0 STREAM STD (MG/L)
0 UPS BACKGROUND LEVEL (MG/L)
11.74 IWC (%)
144.77 Allowable Concentration (mg/I)
Ammonia as NH3
(winter)
7010 (CFS)
2001100m1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/1)
466
40
62
1.0
0.22
11.74
6.86
595
40
62
1.8
0.22
9.44
16.96
NC0024911
4/27/95

TOXICANT ANALYSIS
cor-;."6-
Cam-
P'4`n,t4, g-r4
`AAAji-o• ;A) "C`
VII�-
V�+
Facility Name
MSD-BUNCOMBE CO.
NPDES #
NC0024911
Qw (MGD)
40
7Q 10s (cfs)
466
I WC (%)
11.74
Rec'ving Stream
CRIVER
FRENCH_____BROAD____
_�__
Stream Class
FINAL RESULTS
CYANIDE
Max. Pred Cw
112
Allowable Cw
42.6
Max. Value
40
Chromium
Max. Pred Cw
225
Allowable Cw
425.8
Max. Value
150
Copper
Max. Pred Cw
140
Allowable Cw
59.6
Max. Value
100
Lead
Max. Pred Cw
50
Allowable Cw
212.9
Max. Value
50
Silver
Max. Pred Cw
34.2
Allowable Cw
0.5
Max. Value
18
Zinc
Max. Pred Cw
375
Allowable Cw
425.8
Max. Value
250
0
Max. Pred Cw
0
Allowable Cw
0.0
0
Max. Pred Cw
0
Allowable Cw
0.0
0
Max. Pred Cw
0
Allowable Cw
0.0
0
Max. Pred Cw
0
Allowable Cw
0.0
0
Max. Pred Cw
0
Allowable Cw
0.0
Limn-
9LL VAwe5 ,'Dc-
MTy
4,r (IAt vti /3a L r� ,r/b \
oecy
5 (c4 pf 1 50
1
MA, ✓AL.Oes tf)t, 51tccoo 1"�
(,(,AvTC2 oY
01,J r taicr "J(f
4/26/95
PAGE 1

WHOLE EFFLUENT TOXICITY TESTING OISELF-MONITORING SUMMARYI Sun, Apr 23. 1995
PAt'l1.fr) IIFIRIIItjiM1.N'f VI' It JAN 1491 MAR APR MAY 11 IN )III.
AIIG
IION W/1k'171,1NC• PERM (7Ik LIM:3.7%((ikAO) 91 -
NC0037176A0I Ikgin:3/1193 Frequency: Q I'A' A FEB MAY AUG NOV NonCamp:SINGIJi 92 -- - -- _ -
County:I1ENDERSON Region: ARO Subbnsin: I12D02 93 -- -- - - 141 PASS Mt
PF:0.006 Special 94 -- PASS - - PASS - PASS
7010; 0.24 IWC(%):3.7 Onkr. 95 --• roes - -
Doom WWH' PERM CIIR IJM:27% Y 91 PASS PASS PASS
NC0020621/001 Begin:5/1/93 Frequency: Q P/1' a SIiP DEC MAlt JUN NonComp:SINGLIj 92 - LATE Wt NI PASS
County: WATAUGA Region: WSRO Subbasin: NEW01 93 - - PASS - NR/PASS
PF:3.2 Special 94 -. - PASS - PASS
7Q10: 13.1 IWC(%):27.42 Order 95 Fail Pass
SI.I' u r Nt IV IIF1•
PASS
FAIL PASS
- -- PASS PASS
- PASS --- PASS
LATE PASS - PASS
PASS -- - FAIL
BOONVII.LE WWrP' PERM CIIR LIM:81% 91 PASS - - PASS PASS
NC00209311001 Begin:5/31/94 Frequency: Q I'/F A JAN AI'k JUL OC r NonComp:SINGIJ! 92 PASS - - M1 - PASS PASS
County:YADKIN Region: WSRO Subbuin: YAD02 93 PASS - - PASS Ni
I'I':0.2 Special 94 PASS - PASS - PASS
7Q10: 0.075 IWC('J4:81.0 (Inky 05 Fria Rill roll ...
BP OIL CO -GULP PRODS DIV/002 I'LERM:2411R LCSO AC MONfr lil'Is 1'17I1) (GRAB) 91 -
NC0036145/002 Begin:10/1/93 Frequency:5OWD/A NonComp: 92 -
County:1O11NSTON Region: RRO Subbasin: NEU02 93 .,-
PP: VARIES special 94 46.531
7010:0.0 1WC(%): 100.0 fir: 95 -
PASS
t4Z PASS
NI PASS
PASS
PASS
59.031 -
74.101
-- ••- 70.711 60.721
35.361
DP OIL CO. -GULP PRODS. DIV/001 PIiRM:241IR LC50 AC MONIT I!PIS Fr1ID (GRAB) 91 - - -
NC0036145/001 Begin:10/1/93 Freluency:3OWDVA NonComp: 92 - - - >1001.37.0911 -- 32.991 _-
.. 1 --
ounty:l01 WSTON Region: RRO Subbuin: Mi1102 ---
93 70.711t - - - --- •- --- --- 42.041
PP: VARIES Special 94 45.271 61.241 - - <12.51 ----
7Q10: IWC(%):100.0 ONer: 95 - - •-
DREVARD WW1? PERM CIIR LIM:2.4%
NC0060534/001 Begin:10/1/90 Frequency: Q PA' A JUL OCf JAN APR NonComp:
County:TRANSYI.VANIA Region: ARO Subbasin:
I'P: 2.50 Special
7Q I IB 161.0 IYA.1%): 2.40 Onkc
y 91 PASS - - PASS -- - PASS - PASS
92 PASS - - PASS PASS - PASS - -
03 PASS - - PASS •-• - --
PASS - ..- PASS
94 PASS - - PASS •-- PASS - - - -
PASS
05 Piton-
Bk(1ADWAYWWII' I.ISI'(:IIK'1'AK:83% 91 3.20' lit NONE' NONE' LATE NONE• NONE_' NONE' NONE' 70.NONE' 7.1•
NC0059242/001 Ik•gin:l/23/9'2 Fnquenty: Q PA; A MAIL 111N SEP I)I1C NonComp: 02 >10O' NONE PASS - PASS PASS PASS
County:U!C Region: RRO Subbn in: CPI'U7 03 -- - PASS PASS FAIL PASS7•
NFWPASSASS
PI':0.16 Special B4 -•• FAIL FAIL PASS LATE PASS
7010: 0.05 IWC(%):83 Onler 95 Pass PASS
BRYSON CI'EY W WIT I'EERM:2411R NW AC I.IM 90% (FI71I)) 91 PASS PASS NONE' NONE.
NC0026557/001 Begin:8/I/93 Frequency: Q A JAN Al'R JUI.00E NonComp:SINGI.E 92 >100' - >100• - - - NONE' --' -
LATE >too•
County:SWAIN Region:ARO Subbuin:LTN02 93 >100• >100• ... >100' _ >100''•' -
PF:0.60 Special 94 PASSI -- PASS1 - - PASSI - - PASSE - -
7010: 365.00 IWC(%):0.253 Order 95 Passl
... - - '- - - PASSE - -
D(111CC CREEK WWII' )'IiRM:2411R AC I'IF I.IM 90% WIND) 01 -- FAILI PASSI - FAIL1 141 • PASSI PASSI PASSI Nt'0011Xl')IRXII Ikphro/IN1 Iirvprnry' 1) A IAN APR 1111. 111.1' N.•ot' p SINtn.F, 117 --- PASSI I'A::SI PASSI County:11ARN111'r Region: FRt) Su6basin: ('1'1.1)/ 93 --- - PASSI PASSI N I ... . -
PASS! __ 1 All 1 1 0.50 Special 94 PASSI - FAILI PASSI PASSI PASSI
7Q
7Q10:600.00 IWC(%):0.13 ONer. 95 Pass!
---
PA:::.1
PASSI
PASSI
BUNCOMBE COUNTY MSD PERM CIIR 1.IM:11.7% & AC 1.IM 241IR Q RP 90% (MID) 91 -- P. PI --- P,PI -- P,PI P,PI _
NC0024911 /001 Begin:7/1/89 Frequency: Q WV A FEB MAY AUG NOV NonComp: 92 -- PASS,FI PASSE PASS,PASSI - PASSLPASS -- - PASSI,PASS --
County:BUNCOM➢E Region:ARO Subbasin: Mt B02 93 - PASS,PASSI - - PASS,FAILI PASSI PASS,PASSI - PASS.>1001 -
PP:40.0 Special 94 -- PASS,>1001 --- PASS,PASSI - PASS,PASSI --- PASS,PASSI -
7Q10: 466.00 IWC(%):11.7 onkr OS - Poss,Passl -
0 2 consecutive failures = significant nonromplianer Y Pre 19)I Da,n Available
LEGEND:
PERM =Permit Requirement LET = Adnlinistmlivc 1 cY1cr - Target Begin =First march mtuired 7Q10 =Receiving stream low flow criterion (cfs)
Frequency = Monitoring frequency; Q- Quarterly; M- Monthly; BM- Bimonthly; SA- Semiannually; A- Annually; OWD- Only when discharging; I). Disconiirlued monitoring requirement; 1S- Conducting independent study
A = rluanerly monitoring increases to monthly upon single failure Months that testing must occur - ex. JAN,API,JUL,OCT NonComp = Current Compliance Requirement
PF'= Permitted flow (MGD) 1WC%= Instroam waste concentration P/1s = 1 ass/Fail chronic test AC = Acute CIIR =Chronic
Data Notation: f • Fathead Minnow: • - Ceriodanhnia sp.; my - Mvsid shrimp: ChV - Chronic value: P . Mortality of stated nerccntaee nt highest concentration: at - Performed by DEM Tox Eva) Group; bt - Bad test
Reporting Notilion: ••• = Dam not required; Nit • Not reported; ( ) - Beginning of Quarter Facility Activity Status: I - Inactive, N - Newly Issued(To conslmct);11- Active but not discharging; 1-More data available for month in late.stion SIG = ORC signature needed
5

SOC PRIORITY PROJECT: Yes
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING IT
WATER QUALITY SECTION •
ATTENTION: Susan Wilson
DATE: December 23, 1993
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY Buncombe
PERMIT NUMBER NC0024911
PART I - GENERAL INFORMATION
1. Facility and Address:
Mailing Address:
No XX
•
N 5 1994
Metropolitan Sewerage District
of Buncombe County
NC Hwy 251 North
Woodfin, North Carolina
Metropolitan Sewerage District
of Buncombe County
Post Office Box 8969
Asheville, North Carolina 28814
2. Date of Investigation: June 2, 1993
3. Report Prepared By: Max L. Haner
4. Persons Contacted and Telephone Number:
Marc Fender
Neil Hall
[phone]
5. Directions to Site: Existing facility is located adjacent to
NC Hwy 251 North of Asheville in the Woodfin Township. The
facility is further located approximately .2 mile north of the
intersection of NC Hwy 251 with NCSR 1684 (Elk Mtn Road) in
Buncombe County.
6. Discharge Point(s), List for all discharge points:
001 - Latitude: 35° 39' 02" Longitude: 82° 35' 54"
Attach a USGS map extract and
discharge point on map.
U.S.G.S. Quad No. E8NE
if
indicate treatment facility site and
U.S.G.S. Quad Name Weaverville, N.C.
Pace 1

7. Site size and expansion area consistent with application?
XXYes No If No, explain:
8. Topography (relationship to flood plain included): Not in
flood plain
9. Location of nearest dwelling: 400-500 ft (Est)
10. Receiving stream or affected surface waters:
French Broad River
a. Classification: Class "C"
b. River Basin and Subbasin No.: French Broad, 04030S%
c. Describe receiving stream features and pertinent downstream
uses: Agriculture, Wildlife, Fishing
Note: Discharge is to flume serving MSD Hydroelectric Plant.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted 40.0 MGD (Ultimate
Design Capacity)
b. What is the current permitted capacity of the Wastewater
Treatment facility? 40.0 MGD
c. Actual treatment capacity of the current facility (current
design capacity 40.0 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
12/23/92 - WQ0007174 - Sludge Alkaline Stabilization Facility
Construction underway but not completed to date
Note: The Sludge Alkaline Stabilization Facility is intended
for use as backup to the incinerator which was
constructed as part of the recently completed
expansion project.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Existing
facility is a 40 MGD RBC system with primary and secondary
microscreens, instrumented flow measurement, influent pumping
to handle 60 MGD, mechanical bar screens, grit/grease
removal, intermediate clarifiers, and effluent chlorination.
Sludge handling is provided by dual thickeners, dual
anaerobic digesters, primary and secondary belt filter press,
and an incinerator (startup phase). A sludge lagoon is used
for final ash disposal.
f. Please provide a description of proposed wastewater treatment
facilities: Construction of Sludge Alkaline Stabilization
Facility underway to serve as backup to the incinerator.
g Possible toxic impacts to surface waters:
Parrs 2

h. Pretreatment Program (POTWs only):
in development approved Yes
should be required not needed
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM
Permit Number N/A
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP PFRP WQ 7174 OTHER
c. Landfill:
d. Other disposal/utilization scheme (Specify): Incinerator -
See discussion of treatment facility (Page II, paragraph 1.e
- Page 2)
3. Treatment plant classification (attach completed rating sheet): IV
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 24, 40, 55, 56, 57, 59, 64
Main Treatment Unit Code: 43006
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only)?
WWTP expansion to 40 MGD was constructed with construction grant
funds. Construction grant funds are not being used for the
alkaline stabilization facility. Other public monies are being
used for this project.
2. Special monitoring or limitations (including toxicity) requests:
Consistent with modifications to the existing permit on 12/11/92,
influent and effluent limits and monitoring for CBOD should be
included with this permit. A copy of the Effluent LAitations and
Monitoring Requirements page is attached for your reference.
Page 3

3. Important SOC, JOC, or Compliance Schedule dates: (Please
indicate) N/A
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.N/A - existing POTW
Spray Irrigation:
Connection to Regional Sewer System:
Subsurface:
Other disposal options:
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
Expansion of the wwtp from 25 MGD to 40 MGD was completed during
1993 with adjustments still being made to the dewatering and
incineration facilities (startup phase). MSD intends that the
PFRP alkaline stabilization unit still under construction be used
in place of incineration after the market for this product has
been developed. Until market development, the PFRP unit will be
used as backup to the incineration. The facility should have no
difficulty in producing an effluent which is consistently in
compliance with permit limitations. It is recommended that the
permit go to public notice and be issued accordingly.
Sign ture of Re ort P eparer
ater Quality Regional Supervisor
Date
Page 4