NC0074292_Complete File_19960409

J
,Zo nl �
State of North Carolina % ._...
l - Department of Environment, V
Health and Natural Resources•'��''�e���
Division of Environmental Management A&,•
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary p E H N F-1
A. Preston Howard, Jr., P.E., Director
April 9, 1996
JIM DOWTIN i W, T17VED APR " 9 19W
DOWTIN INVESTMENT CO
Ill SHADY ACRES LANE
REIDSVILLE NC 27320
Subject: Rescission of NPDES Permit No. NCO074292
Dowtin Investment Co.
Rockingham County
Dear Mr. Dowtin: __i3c P AI S A
Reference is made to the rescission of the subject NPDES Permits. Staff of our
Winston-Salem Regional Office have confirmed that this facility has never been constructed
and that this discharge permit is no longer needed. Therefore, NPDES Permit No.
NCO074292 is rescinded and will be removed from our computer systems, effective
immediately.
If in the future you wish to again discharge wastewater to the State's surface waters,
you must first apply for and receive new NPDES Permits. Discharging without a valid
NPDES Permit will subject the discharger to a civil penalty of up to $10,000 per day.
If it would be helpful to discuss this matter further, I would suggest that you contact
Steve Mauney, Water Quality Regional Supervisor, Winston-Salem Regional Office at
910/896-7007.
Sincerely,
A. Preston Howard, Jr., P.E.
cc: Mr. Jim Patrick, EPA
Rockingham County Health Department
Winston-Salem Regional Office
Permits & Engineering Unit - Dave Goodrich - w/attachments
Fran McPherson, DEM Budget Office
Operator Training and Certification
Facilities Assessment Unit - Robert Farmer - w/attachments
Central Files - w/attachments
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO074292
PERMI'I'I'EE NAME: Dowtin Investments Co, Inc.
FACILITY NAME: Dowtin Investments Co., Inc.
Facility Status: Proposed
Permit Status: Renewal
Major
Pipe No.: 001
Minor q
Design Capacity: 0.030 MGD
Domestic (% of Flow):
Industrial (% of Flow):
100 %
Comments:
Facility has not been built. ,C Lzs
RECEIVING STREAM: Benaja Creek
Class: W,S ' C — of 6(k)
Sub -Basin: 03-06-01
Reference USGS Quad: C20NW (please attach)
County: Rockingham
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 1/31/94 Treatment Plant Class:
Classification changes within three miles:
No change within three miles.
Requested by:
Prepared by:
Reviewed by: `L VV1,4
Mack Wiui
3.
ILlAq
Date: 3/30/94
Date: 5
Date: 5 (o
wi<
Modeler
Date Rec.
I #
Sc-p d
3 3l a,�
I -I-b10
z
Drainage Area (mi ) , O Avg. Streamflow (cfs): , .Z
7Q10 (cfs) Q, (o Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters le/nA. FeQ1� COe7d� C41,%'�
Upstream Location,moo 44, aboo e o u-fP_ I i
Downstream Ye:S LocationsoKAe,-A eQ 6-44d l
i
Recommended Limits:
Monthly Average
Summer
Winter
Wasteflow (MGD):
0.03
0.03
BOD5 (mg/l):
30
30
NH3N (mg/1):
11.0
monitor
DO (mg/l):
TSS (mg/1):
30
30
Fecal Col. (/100 ml):
200
200
pH (SU):
6.0-9.0
6.0-9.0
Residual Chlorine (µg/l):
28
28
Oil & Grease (mg/1):
TP (mgA):
2.0
2.0
TN (mg/1):
1�1 o'C5
VJS CZo
°► G
� — wC
o
('_nmmenty
M.

M? EIDSV• LL
i
75
� u e
ti
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11 } I
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RA/ _Tl VO e ,v Co
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wer
_ --__ / e I � 11 1I II M •
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II
I

I� EOEIVED
N.C. Dept. of EHNRi
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
Dowtin MHP
NCO074292
Domestic - 100%
Proposed
Renewal
Benaja Creek
C-NSW (changed 8/3/92)
03-06-01
Rockingham
Winston-Salem
Mack Wiggins
3/30/94
C20NW
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Request # 7810
MAY 9 1994
Winston-Salem
Regional Office
Stream Characteristic: Regional Equations
USGS #
Hydro Region HA9
Date:
In House
Drainage Area (mi2):
8.0
Summer 7Q10 (cfs):
0.6
Winter 7Q10 (cfs):
1.4
Average Flow (cfs):
7.2
30Q2 (cfs):
IWC (%):
7.2
NH3-N limit assigned in summer to protect against ammonia toxicity instream. New Fecal
Coliform limit and dechlorination also assigned since facility is proposed. There have been no A to
C's issued to date and there are none in house.
Special,,�Schedule Requirements and additional comments from Reviewers:
�Crrr/6 04 ocw 4xos-oi
Recommended by: Date: 5
Reviewed by t/
Instream Assessment: J,6t 4A1.1 Date: u S
Regional Supervisor: ' 4 . Date:
Permits & Engineering:
RETURN TO TECHNICAL SUPPORT BY:
.1ili� Q 4 13.4

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):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
FAZZONT"' a_�
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):
CONVENTIONAL PARAMETERS
Monthly Average
Summer Winter
0.03 0.03
30 30
30 30
1000 1000
6.0-9.0 6.0-9.0
Monthly Average
Summer
Winter
0.03
0.03
30
30
11.0
monitor
30 30
200 200
6.0-9.0 6.0-9.0
28 28
2.0 2.0
Limits Changes Due To:
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 X
New facility information
WQ or EL
EL
WQ
EL
EL
EL
EL
WQ
Fecal, NH3-N, TRC
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.

3
INSTREAM MONITORING REQUIREMENTS
Upstream Location: At least 300 ft. above outfall
Downstream Location: AT Southern Ralroad Bridge over Benaja Creek
Parameters: Temperature, Dissolved Oxygen, Fecal Coliform, Conductivity
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
AAd quacy of Existing Treatment - fg 0,p d sc d' s y S le,
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?
Wasteload sent to EPA? (Major) N (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.

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MODEL INPUTS FOR LEVEL B ANALYSIS
GENERAL INFORMATION
Facility Name:
o 4 AdJo
NPDES No.:
00 x5
Type of Waste:
100 ° v
Facility Status:
Prop 05e-
a�
Receiving Stream:
AeAqjr,
Stream Classification:
- S
Subbasin:
- Or. - O )
County:
46 cie,-A
Regional Office:
1.
Topo Quad:
U,JV)
FLOW INFORMATION
USGS #
Date of Flow Estimates:
HN46
Drainage Area (mi2):
1r, p on: x
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
4 f
30Q2 (cfs):
IWC at Point of Discharge (%):
Cummulative IWC (%): 4 `>
MODEL INPUT INFORMATION
LENGTH OF REACH (miles)
0. 'T
6.75
INCREMENTAL LENGTH (miles)
6,
0"1
p.
WASTE CHARACTERISTICS
FLOW (MGD)
6. p
O. 03
CBOD (mg/1)
q5. &
$. 0
NBOD (mg/1)
90.0
D.O. (mg/1)
RUNOFF CHARACTERISTICS
7Q10 (cfs/mi2)
0S
QA (cfs/mi2)
/
CBOD (mg/1)
, 0
.
NBOD (mg/1)
1.0
1,0
D.O. (mg/1)
debitAt
debt -.
TRIBUTARY CHARACTERISTICS
7Q10 (cfs)
QA (cfs)
CBOD (mg/1)
0
NBOD (mg/1)
1.
D.O. (mg/1)
01 wK -
SLOPE (fpm)
p
10 z
1,3
Name of facility

`�"c� Ya`,�
7"

Lot,41,,, M4P
Residual Chlorine
Ammonia as NH3
(summer)
7010 (CFS)
0.6
7Q10 (CFS)
0.6
DESIGN FLOW (MGD)
0.03
DESIGN FLOW (MGD)
0.03
DESIGN FLOW (CFS)
0.0465
DESIGN FLOW (CFS)
0.0465
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVEL (UG/L)
0
UPS BACKGROUND LEVEL (MG/L)
0.22
IWC (%)
7.19
IWC (%)
7.19
Allowable Concentration (ug/1)
236.35
Allowable Concentration (mg/1)
11.06
Ammonia as NH3
(winter)
7010 (CFS)
1.4
Fecal Limit
200/100ml
DESIGN FLOW (MGD)
0.03
Ratio of 12.9 :1
DESIGN FLOW (CFS)
0.0465
STREAM STD (MG/L)
1.8
UPS BACKGROUND LEVEL (MG/L)
0.22
IWC (%)
3.21
Allowable Concentration (mg/1)
49.37
5/3/94

10A
SUMMER
MODEL RESULTS
Discharger
:
DOWTIN MHP
Receiving Stream :
BENAJA CREEK
----------------------------------------------------------------------
The End D.O.
is 7.15
mg/l.
The End CBOD
is 3.49
mg/l.
The End NBOD
----------------------------------------------------------------------
is 4.17
mg/l.
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste Flow
(mg/1)
------
Milepoint Reach #
----------------
(mg/1)
----
(mg/1)
----
(mg/1)
--
(mgd)
----------
Segment 1
4.98
0.10 1
Reach 1
45.00
90.00
0.00
0.02000
Reach 2
0.00
0.00
0.00
0.00000
Reach 3
45.00
90.00
0.00
0.03000

0 v.
SUMMER
Seg #
I Reach #
I Seg Mi I
D.O. I
CBOD I
NBOD I
Flow
1
1
0.00
5.06
15.20
28.32
0.10
1
1
0.10
4.98
12.58
22.40
0.12
1
1
0.20
5.12
10.73
18.26
0.14
1
1
0.30
5.35
9.36
15.22
0.16
1
1
0.40
5.59
8.29
12.90
0.18
1
1
0.50
5.83
7.45
11.09
0.21
1
1
0.60
6.04
6.76
9.63
0.23
1
1
0.70
6.24
6.18
8.44
0.25
1
1
0.80
6.42
5.70
7.45
0.27
1
2
0.75
6.99
3.29
3.26
0.77
1
2
0.85
7.06
3.22
3.14
0.78
1
2
0.95
7.12
3.14
3.03
0.79
1
2
1.05
7.17
3.07
2.93
0.81
1
2
1.15
7.21
3.01
2.83
0.82
1
2
1.25
7.26
2.94
2.73
0.83
1
2
1.35
7.29
2.88
2.64
0.85
1
2
1.45
7.33
2.82
2.55
0.86
1
3
1.45
6.95
4.98
7.04
0.91
1
3
1.55
6.92
4.89
6.85
0.91
1
3
1.65
6.90
4.79
6.66
0.92
1
3
1.75
6.90
4.70
6.47
0.92
1
3
1.85
6.89
4.61
6.30
0.93
1
3
1.95
6.90
4.52
6.12
0.93
1
3
2.05
6.90
4.44
5.96
0.94
1
3
2.15
6.91
4.36
5.79
0.94
1
3
2.25
6.93
4.27
5.64
0.95
1
3
2.35
6.94
4.19
5.48
0.95
1
3
2.45
6.96
4.12
5.33
0.96
1
3
2.55
6.98
4.04
5.19
0.96
1
3
2.65
7.00
3.97
5.05
0.97
1
3
2.75
7.02
3.89
4.91
0.97
1
3
2.85
7.04
3.82
4.78
0.98
1
3
2.95
7.06
3.75
4.65
0.98
1
3
3.05
7.08
3.68
4.53
0.99
1
3
3.15
7.10
3.62
4.40
0.99
1
3
3.25
7.12
3.55
4.29
1.00
1
3
3.35
7.15
3.49
4.17
1.00
Seg #
I Reach #
I Seg Mi I
D.O. I
CBOD I
NBOD I
Flow I

*** MODEL SUMMARY DATA ***
Discharger : DOWTIN MHP Subbasin 030601
Receiving Stream : BENAJA CREEK Stream Class: WS-III NSW
Summer 7Q10 : 0.6 Winter 7Q10 : 1.4
Design Temperature: 26.0
ILENGTHI
SLOPEI
VELOCITY
I DEPTHI Kd I
Kd
I Ka I
Ka I
KN I
--------------------------------------------------------------------------------
I mile I
ft/mil
fps
I ft
Idesignl
@20V2
Idesignl
@201/2 Idesignl
Segment
1
I I
1 0.851
I
30.001
0.091
I
1 0.37
I I
1 0.41 1
0.31
I I
1 5.63 1
I
4.941
I
0.79 1
Reach
--------------------------------------------------------------------------------
1
1 1
1
1
1 1
1 1
1
1
Segment
1
I I
1 0.751
I
14.301
0.120
I
1 0.68
I I
1 0.33 1
0.25
I I
1 3.52 1
I
3.091
I
0.48 1
Reach
--------------------------------------------------------------------------------
2
1 1
1
1
1 1
1 1
1
1
Segment
1
I I
1 1.901
I
14.301
0.125
I
1 0.72
I I
1 0.33 1
0.25
I I
1 3.67 1
I
3.221
I
0.48 1
Reach
--------------------------------------------------------------------------------
3
1 1
1
1
1 1
1 1
1
1
1 Flow
I CBOD
I NBOD I
1 cfs
1 mg/1
i mg/1 I
Segment 1
Reach 1
Waste
1 0.031
1 45.000
1 90.000 1
Headwatersl 0.070
1 2.000
1 1.000 1
Tributary
1 0.000
1 2.000
1 1.000 1
* Runoff
1 0.210
1 2.000
1 1.000 1
Segment 1
Reach 2
Waste
I 0.000
1 0.000
1 0.000 1
Tributary
I 0.500
1 2.000
1 1.000 1
* Runoff
I 0.130
1 2.000
1 1.000 1
D.O. 1
mg/1 I
0.000
7.300
7.300
7.300
0.000
7.300
7.300
Segment 1 Reach 3
Waste 1 0.046 1 45.000 1 90.000 1 0.000
Tributary 1 0.000 1 2.000 1 1.000 1 7.300
* Runoff 1 0.050 1 2.000 1 1.000 1 7.300
* Runoff flow is in cfs/mile

PERMIT NO.: NC00 -74-261Z
FACILITY NAME: Dd.,. +i "` " H
Facility Status: EKSTM
(circle one)
Permit Status: RENEWAL
(circle one)
NPDES WASTE LOAD ALLOCATION
M00I1FIC.ATION UNPERMrrrFD NEW
Major minor" `z
Pipe No: 0 0 1
Design Capacity (MGD): � - 0 30
Domestic (% of Flow): VC
Industrial (x of Flow): O
Comments:
RECEIVING STREAM:
STREAM:
Class: W55— PSW
Sub -Basin: D 3 _ 0& ­01
Reference USGS Quad: C 20 �JVJ.) (please attach)
County:
Regional Office: As Fa Mo Ra Wa WI
(circle one)
Requested By: - l lA ,Date:
Prepared By: _ o Date: S
IL
/4CReviewed By: Date:
Modeler
Date Rec.
A
Drainage Area (mil) 0-87 Avg. Streamflow (00:6-10 _
7Q10 (cfs) Winter 7Q10 (cfs) 30Q2 (cfs) 0.20
Toxicity Limits: IWC % (circle one) Acute / Chronic
Instream Monitoring:
Parameters Tcnt�era�u�c
Dom
con�uciiy►-decal
c�(�or,h
Upstream
Location
'00 4T UDS+(Yam
�rbm 9,561&-le
Downstream . Location �'�s�r[am ak lk' S+nIrn R0.'�''7�l
b�:dyc,
Frere^cr : weekly ;n -lILA, SA04OUr
ML141 ly "', -tkL r ( Nov. — Mer c �
Effluent
Characteristics
Summer
Winter
BODE (mg/1)
30
NH' N (mg/0
Q'rRV AAV o2MAY Nor
3ui�D w i rOW T-4
NR ^ cT Z 16P�s Ko-
3 0 16r-r RxT,�
1000
6-q
D.O. (mg/0
TSS (mg/1)
F. Col. (/100ml)
pH (SU)
LL 1�
Comments: SnS+rlIc°`^1�,y �on,�or,nh 1�coMnncn�si olut �v
S�1)L/ S+G[4 reN ve-to C: rO�DS<rvr.l J""Ay

FOR APPROPRIATE DISCHARGERS, LIST COMPLETE GUIDELINE LIMITATIONS BELOW
Effluent Characteristics Monthly Daily
Average Maximum Comments
Type of Product Produced I Lbs/Day Produced I Effluent Guideline Reference

Request No. :4686
--------------------- WASTELOAD ALLOCATION APPROVAL FORM ---------------------
Permit Number
Facility Name
Type of Waste
Status
Receiving Stream
Stream Class
Subbasin
County
Regional Office
Requestor
Date of Request
Quad
: NC0074292
: DOWTIN MHP
: DOMESTIC
: PROPOSED
: BENAJA CREEK
: WSIII-NSW
: 030601
: ROCKINGHAM
: WINSTON-SALEM
: JULE SHANKLIN
: 6/6/88
: C20NW
Drainage Area
Average Flow
Summer 7010
Winter 7010
30Q2
(sq mi)
: 0.87
(cfs)
: 0.90
(cf s)
: 0.05
(cfs)
: 0.2
(cfs)
: 0.20
------------------------- RECOMMENDED EFFLUENT LIMITS-------------------------
Wasteflow
(mgd):
0.030
5-Day BOD
(mg/1):
30
Ammonia Nitrogen
(mg/1):
NR
Dissolved Oxygen
(mg/1):
NR
TSS
(mg/1):
30
Fecal Coliform (#/100ml):
1000
pH
(SU):
6-9
TP
(mg/1):
2.0
RECEIVO
N.C. DW; NNO
IUA,
Divlsid►i of
Env1r®nm@Mj1 M,1�:�?&ate
1►Vi19��fi=��I�m ���: �t
--------------------------------- MONITORING ---------------------------------
Upstream (Y/N): N Location:
Downstream (Y/N): N Location:
---------------------------------- COMMENTS ----------------------------------
J�7/�/aq.n �f7�m,/n.`�oi:w) 11oi' �%i3Aslveol ©Ycpi.�l/o.�► isGi.+t.we.roro� G�.e �0 6l �... Sf�e+�a..� v�c,}�y
Dlis,slv��( �N/��R�f /Si`T�. �✓�qA�'I? . �"' �A./1�sG0.MJ �!/%id
� t
Recommended by ------------
Reviewed by:
r Tech. Support Supervisor
Regional Supervis _
Permits & Engineering _
Date _ 6�27JtfK_
Date _^�7
D a t e 30i,�Q>Qj
Date
RETURN TO TECHNICAL SERVICES BY JUL 2 7_1988 -