NC0023191_Wasteload Allocation_19920401

•
NPDES WASTE LOAD ALLOCATION
PERMIT Na: NC0023191
PERMITTEE NAME:
FACILITY NAME:
David Millsaps
Seven Cedars Mobile Home Park
Facility Status: Existing
Permit Status: Renewal
Major Minor �1
Pipe No.: 001
Design Capacity: 0.0I0 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments:
* f No% To P E PCP- IO LA ;Wawa,
MRut, ► ry MAcI AAPta( f . eitiMAJBeI> FLa w
iu +Jf 2 Futu k.
RECEIVING STREAM:Third Creek
Class: C
Sub -Basin: 03-07-06
Reference USGS Quad: E 15SE (please attach)
County: Iredell
Regional Office: Mooresville Regional Office
Previous Exp. Date: 2/29/92 Treatment Plant Class: 1
Classification changes within three miles:
No change within three miles.
Requested by: Mack Wiggins
Prepared by:
Reviewed by:,CLty , f �Q Q,t gQyl
135 srw)
14.
Date: 2/10/92
Date: 3 2
Date:
Modeler
Date Rec.
#
A )
2-I l3' u.,
VMS"
2
Drainage Area (mi ) 6,9 , 8 Avg. Streamflow (cfs): (9q,
7Q10 (cfs) t2, Z Winter 7Q10 (cfs) 21 30Q2 (cfs) ZS. B
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
3o
;o
NH3-N (mg/1)
D.Q. (mg/1)
TSS (mg/1)
30
30
F. Col. (/100 ml)
pH (SU)
(— 9
G i
MIMED
Comments:

SUMMER
QEFF=0.025 MGD
I Seg # I Reach # I Seg Mi I D.O.
1 1 0.00 6.49
1 1 0.22 6.08
1 1 0.44 5.72
1 1 0.66 5.42
1 1 0.88 5.16
1 1 1.10 4.94
1 1 1.32 4.76
1 1 1.54 4.60
1 1 1.76 4.48
1 1 1.98 4.38
1 1 2.20 4.30
1 2 2.20 4.29
1 2 2.47 4.22
1 2 2.74 4.17
1 2 3.01 4.13
1 2 3.28 4.11
1 2 3.55 4.10
1 2 3.82 4.10
1 2 4.09 4.11
1 2 4.36 4.13
1 2 4.63 4.15
1 2 4.90 4.18
I Seg # I Reach # I Seg Mi I D.O.
I CBOD
24.48
23.69
22.95
22.24
21.57
20.93
20.31
19.73
19.17
18.63
18.12
18.17
17.77
17.37
16.99
16.62
16.26
15.91
15.57
15.24
14.92
14.61
I CBOD
I NBOD 1 Flow I
23.28 16.00
22.39 16.40
21.56 16.79
20.76 17.19
20.00 17.58
19.28 17.98
18.60 18.38
17.95 18.77
17.33 19.17
16.74 19.56
16.18 19.96
16.32 20.00
15.85 20.25
15.40 20.50
14.96 20.75
14.54 21.00
14.13 21.25
13.73 21.51
13.35 21.76
12.98 22.01
12.62 22.26
12.28 22.51
I NBOD I Flow I
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pe,QMrr l5 %*- Q, 00S MOO, Acii lTY i26k1-t-y ti'rL?S ?&2WT
62 0, CO A-4P- Na EwEcq o,V Till gv C,LE L CoM7A 0
T 57-illiVALL,E.

SUMMER
QEFF=0.0 MGD
I Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I
1 1 0.00 6.49 24.48 23.28 16.00
1 1 0.22 6.08 23.69 22.39 16.40
1 1 0.44 5.72 22.95 21.56 16.79
1 1 0.66 5.42 22.24 20.76 17.19
1 1 0.88 5.16 21.57 20.00 17.58
1 1 1.10 4.94 20.93 19.28 17.98
1 1 1.32 4.76 20.31 18.60 18.38
1 1 1.54 4.60 19.73 17.95 18.77
1 1 1.76 4.48 19.17 17.33 19.17
1 1 1.98 4.38 18.63 16.74 19.56
1 1 2.20 4.30 18.12 16.18 19.96
1 2 2.20 4.30 18.12 16.18 19.96
1 2 2.47 4.23 17.71 15.71 20.21
1 2 2.74 4.18 17.32 15.26 20.46
1 2 3.01 4.14 16.94 14.83 20.71
1 2 3.28 4.12 16.57 14.41 20.96
1 2 3.55 4.11 16.21 14.00 21.22
1 2 3.82 4.11 15.86 13.61 21.47
1 2 4.09 4.12 15.52 13.23 21.72
1 2 4.36 4.14 15.19 12.86 21.97
1 2 4.63 4.17 14.87 12.51 22.22
1 2 4.90 4.20 14.56 12.17 22.47
I Seg # I Reach # 1 Seg Mi I D.O. I CBOD I NBOD I Flow

SUMMER
QEFF=0.015 MGD
I
I
Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I
1 1 0.00 6.49 24.48 23.28 16.00
1 1 0.22 6.08 23.69 22.39 16.40
1 1 0.44 5.72 22.95 21.56 16.79
1 1 0.66 5.42 22.24 20.76 17.19
1 1 0.88 5.16 21.57 20.00 17.58
1 1 1.10 4.94 20.93 19.28 17.98
1 1 1.32 4.76 20.31 18.60 18.38
1 1 1.54 4.60 19.73 17.95 18.77
1 1 1.76 4.48 19.17 17.33 19.17
1 1 1.98 4.38 18.63 16.74 19.56
1 1 2.20 4.30 18.12 16.18 19.96
1 2 2.20 4.30 18.15 16.26 19.98
1 2 2.47 4.23 17.74 15.79 20.23
1 2 2.74 4.17 17.35 15.34 20.49
1 2 3.01 4.13 16.97 14.91 20.74
1 2 3.28 4.11 16.60 14.49 20.99
1 2 3.55 4.10 16.24 14.08 21.24
1 2 3.82 4.10 15.89 13.68 21.49
1 2 4.09 4.11 15.55 13.30 21.74
1 2 4.36 4.13 15.22 12.93 21.99
1 2 4.63 4.16 14.90 12.58 22.24
1 2 4.90 4.19 14.59 12.23 22.49
Seg # I Reach # I Seg Mi I D.O. I CBOD I NBOD I Flow I

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Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification: C
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
030706
Iredell
MRO
M. Wiggins
2/10/92
E15SE
Request #
6755
it c. RDSo Up NATUR •_
COMMUNIT DDELopMZIVr
MAR 1 7 199
81VISION Of tIh,, -
NOPITAI ENT
OffIC
MOORESVIIIE RFCIONAI MM
f
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
69.8
12.2
21.0
69.4
25.8
0.06
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Dilution ratio is high for this discharge, so no fecal limit or NH3-N/tox choice will be applied.
Facility is meeting its current limits.
Permitted flow for this facility is 0.005 MGD. (Staff report indicates design capacity is 0.025
MGD). Seven Cedars should apply for a modification if an increase in flow is desired.
Statesville -Third Creek WWTP is upstream of this discharge.
S ial Schedule Requirements and additional comments from Reviewers:
AA") a o4Jl e,e0 .avf- crux , --F( s cr-w hQa/ c.Li
pe4i41 <� o. -,4 .,a) - 4t-e t '1s fr 4/ v d /lot
(op Aaly. a )�� �enA�1
d444 A4.4, x'
Recommended by:
Reviewed by
Instream Assessment
(hL
ked.,
Regional Supervisor:. &fteAtiAl • 4i
Permits & Engineering:
FACT SHEET FOR WASTELOAD ALLOCATION
Seven Cedars MHP
NC0023191
Domestic - 100%
Existing
Renewal
Third Creek
Date:
Date::/I ?/')
Date:
Date: 572
APR 13 1992
RETURN TO TECHNICAL SERVICES BY:
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2
CONVENTIONAL PARAMETERS
Existing Limits:
Monthly Average
Summer Winter
Wasteflow (MGD): 0.005 0.005
BOD5 (mg/1): 30 30
NH3N (mg/1):
DO (mg/1):
TSS (mg/1): 30 30
Fecal Col. (/100 ml):
pH (SU): 6-9 6-9
Recommended Limits:
Monthly Average
Summer Winter WQ or EL
Wasteflow (MGD): 0.005 0.005
BOD5 (mg/1): 30 30
NH3N (mg/I):
DO (mg/1):
TSS (mg/1): 30 30
Fecal Col. (/100 ml):
pH (SU): 6-9 6-9
Limits Changes Due To: Parameter(s) Affected
NO CHANGES
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
_X No parameters are water quality Limited, but this discharge may affect future allocations.

4
INSTREAM MONITORING REQUIREMENTS
Upstream Location:
Downstream Location:
Parameters:
Special instream monitoring locations or monitoring frequencies:
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) _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? _N (Y or N) If yes, explain with attachments.