NC0061492_Wasteload Allocation_19920908

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO061492
PERMITTEE NAME: Maury Sanitary Land District
FACILITY NAME: Maury Sanitary Land District WWTF
Facility Status: Proposed
Permit Status: Modification
Major Minor
Pipe No.: 001
Design Capacity: 0.225 MGD*
Domestic (% of Flow): 100 %
Industrial (% of Flow): 0 %
Comments:
*Proposed facility, new flow. Eliminating two existing facilities
(Correctional Center 0.10 MGD and MSLD 0.065 MGD).
RECEIVING STREAM: Contentnea Creek
Class: C-Swamp NSW
Sub -Basin: 03-04-07
Reference USGS Quad: F 28 NE (please attach)
County: Greene
Regional Office: Washington Regional Office
Previous Exp. Date: 2/28/94 Treatment Plant Class: I
Classification changes within three miles:
No chanize
Requested by: Charles Lowe Date: 8/4/92
Prepared by: Date: cf / r I
Reviewed by: N04 A15 Date: 8 2
Modeler
#
0 d:m
-1
Drainage Area (mil) -I3 3 Avg. Streamflow (cfs): % S O
7Q10 (cfs) 3 `{ Winter 7Q10 (cfs) 6 () 30Q2 (cfs) t o 3
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring: /
Parameters DO /-TP xmioCow !P 11 am I T Q_ c '
Upstream to o a. _!
Downstream y ­4 1 �� s
v � � � .1 •3 J�k .� J
Qv vb �w I I'VA01 V tJ. q�
Effluent
Characteristics
Summer
Winter
BOD5 (m )
t 3
2 6
NH3-N (mg/1)
3
6
D.O. (mg/1)
G
6
TSS (mg/1)
3 -o
30
F. Col. (/100 ml)
Z 0-0
Z o O
pH (SU)
6 _ q
1U.-I
L L,�,
Co ents: %AA s+r
.LID. w.e

A
FACT SHEET FOR WASTELOAD ALLOCATIPN ,.
Request # o H NGTON OFFICE
7
Facility Name:
Maury Sanitary Land District
NPDES No.:
NCO061492
Type of Waste:
Domestic
Facility Status:
Proposed
Permit Status:
Existing
Receiving Stream:
Contentnea Creek
Stream Classification:
C-Swmp-NSW
Subbasin:
030407
County:
Greene
Regional Office:
Washington
Requestor:
Lowe
Date of Request:
080592
Topo Quad:
F 28 NE
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
AUG 2 5 M2
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC M:
0209150200
1987
733
34
60
880
103
According to preliminary modeling analyses, field observations, and ambient water quality data,
the assimilative capacity of Contentnea Creek is compromised. This subbasin is being targeted for
extensive studies prior to the next basin permiting cycle of 1998. The oxygen consuming
limitations were developed from a combination of level B modeling and best professional
judgement given the availble water quality data and proposed treatment works. Instream
monitoring requirements include water column profiles to document substandard DO
concentrations at the DO sag.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
91111q ti
U- S Date:
Date:
Date: 2-q / q Z-
SEP 17 1992
RETURN TO TECHNICAL SERVICES BY:

2
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):
Type of Toxicity Test:
Existing Limit:
Recommended Limit:
Monitoring Schedule:
Recommended Limits
COD (mg/):
Cadmium (ug/1):
Chromium (ug/1):
Copper (ug/1):
Nickel (ug/1):
Lead (ug/1):
Zinc (ug/1):
Cyanide (ug/1):
Phenols (ug/1):
Mercury (ug/1):
Silver (ug/1):
Chlorine (ug/1):
CONVENTIONAL PARAMETERS
Monthly Average
Summer Winter WQ or EL
0.225 0.225
1a
26
WQ.
a
6
WQ.
6
6
WQ
30
30
EL
200
200
WQ
6-9
6-9
WQ
28
28
WQ
2
2
WQ
Monit
Monit
TOXICSJM ETALS
Daily Max. WQ or EL
7_ 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.
•2
No parameters are water quality limited, but this discharge may affect future allocations.

INSTREAM MONITORING REQUIREMENTS
Upstream Location: 100 ft upstream discharge
Downstream Location: Approximately 4 miles dowstream from NC 123 (>5 miles upstream from Pol
Parameters: DO, temp, Cond, pH and fecal coliform
Special instream monitoring locations or monitoring frequencies:
DO should be water column profiles (top, middle, bottom) Instream monitoring requires the use of a boa
Monitoring frequencies are once/week during June, July and August, and twice/month the rest of the yes
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Special Instructions or Conditions
Permit limitations may be reduced based on self -monitoring data and additional field studies. More
stringent nutrient limitations may be required in the future.
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.

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obs date
temp (c)
DO
DO sat
% sat
880613
19
6.8
9.27
0.73
890607
24
4.7
8.42
0.56
890711
27
4.5
7.97
0.56
890808
25.00
4.70
8.26
0.57
900619
25.00
5.30
8.26
0.64
900726
28.00
4.80
7.83
0.61
900822
25.00
5.00
8.26
0.61
910611
23.00
5.60
8.68
0.65
.910711
28.00
4.40
7.83
0.56
910814
24.00
4.30
8.42
0.51
1.e
JUN
v,- u- x t 9
U.r

SU MER
B ROUND
MODEL RESULTS
Discharger
:
MAURY SANITARY DISTRICT
Receiving Stream :
CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O.
is 5.54
mg/l.
The End CBOD
is 0.66
mg/l.
The End NBOD
----------------------------------------------------------------------
is 0.13
mg/l.
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste F1
(mg/1)
------
Milepoint Reach #
----------------
(mg/1)
----
(mg/1)
----
(mg/1)
--
(mgd)
--------
Segment 1
5.42
4.90 2
Reach 1
45.00
90.00
5.00
0.0000
Reach 2
7.50
9.00
6.00
0.0000

SUMMER
BACGROUND
Seg
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow
1
1
0.00
6.53
2.00
1.00
32.00
1
1
0.10
6.47
1.98
0.98
32.00
1
1
0.20
6.41
1.95
0.96
32.00
1
1
0.30
6.36
1.93
0.94
32.00
1
1
0.40
6.30
1.91
0.92
32.00
1
1
0.50
6.25
1.88
0.90
32.00
1
1
0.60
6.20
1.86
0.88
32.00
1
1
0.70
6.16
1.84
0.86
32.00
1
2
0.40
6.16
1.84
0.86
32.00
1
2
0.90
5.96
1.73
0.77
32.00
1
2
1.•40
5.80
1.63
0.69
32.00
1
2
1.90
5.68
1.53
0.62
32.00
1
2
2.40
5.59
1.44
0.55
32.00
1
2
2.90
5.52
1.36
0.49
32.00
1
2
3.40
5.47
1.28
0.44
32.00
1
2
3.90
5.44
1.21
0.40
32.00
1
2
4.40
5.43
1.14
0.35
32.00
1
2
4.90
5.42
1.07
0.32
32.00
1
2
5.40
5.42
1.01
0.28
32.00
1
2
5.90
5.43
0.95
0.25
32.00
1
2
6.40
5.44
0.89
0.23
32.00
1
2
6.90
5.46
0.84
0.20
32.00
1
2
7.40
5.48
0.79
0.18
32.00
1
2
7.90
5.50
0.74
0.16
32.00
1
2
8.40
5.52
0.70
0.15
32.00
1
2
8.90
5.54
0.66
0.13
32.00
Seg
Reach
Seg Mi
D.O.
CBOD
NBOD
Flow

9
*** MODEL SUMMARY DATA ***
Discharger MAURY SANITARY DISTRICT Subbasin 030
Receiving Stream CONTENTNEA CREEK Stream Class: C-SW
SW
Summer 7Q10 32.0 Winter 7Q10 : 60.0
Design Temperature: 27.0
ILENGTHI SLOPHI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/miI fps I ft Idesignl @20° Idesignl @201 Idesignl @200 Idesignl @201 Idesignl @201 1
-------------------------------=-----------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 0.701 0.631 0.143 1 3.87 1 0.28 1 0.20 1 0.75 1 0.641 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 1 I I I I I I I I I I I I I
-------------------------------------------------------------------------------------------------------------------
I I I' I I
Segment 1 1 8.801 0.631 0.143 1 3.87 1 0.28 1 0.20 1 0.75 1 0.641 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------------------------
Flow I
CBOD
1 NBOD 1
1
( cfs 1
mg/1
1 mg/l 1
Segment 1 Reach 1
Waste 1
0.000 1
45.000
1 90.000 1
Headwatersl
32.000 1
2.000
1 1.000 1
Tributary 1
0.000 1
2.000
i 1.000 1
* Runoff 1
0.000 1
2.000
1 1.000 1
Segment 1 Reach 2
Waste 1 0.000 1
Tributary 1 0.000 1
* Runoff 1 0.000 1
D.O. 1
mg/l
5.000
6.530
7.170
7.170
7.500 1 9.000 1 6.000
2.000 1 1.000 1 7.170
2.000 1 1.000 1 7.170
* Runoff flow is in cfs/mile

SUMMER
HOOKERTON ONLY
MODEL RESULTS
Discharger
:
MAURY SANITARY DISTRICT
Receiving Stream :
CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O.
is 5.48
mg/l.
The End CBOD
is 0.70
mg/l.
The End NBOD
------------=---------------------------------------------------------
is 0.17
mg/l.
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste F1
(mg/1)
------
Milepoint Reach #
----------------
(mg/1)
----
(mg/1)
----
(mg/1)
--
(mgd)
--------
Segment 1
5.32
4.90 2
Reach 1
45.00
90..00
5.00
0.0600
Reach 2
13.50
27.00
6.00
0.0000

*** MODEL SUMMARY DATA
Discharger : MAURY SANITARY DISTRICT Subbasin 030,
Receiving Stream : CONTENTNEA CREEK Stream Class: C-SW:
SW
Summer 7Q10 : 32.0 Winter 7Q10 : 60.0
Design Temperature: 27.0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/miI fps I ft Idesignl @201 Idesignl @201 Idesignl @201 Idesignl @201 Idesignl @201 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 0.701 0.631 0.143 1 3.87 1 0.28 1 0.20 1 0.75 1 0.641 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 1 1 I ! I I I I I I
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 8.801 0.631 0.143 1 3.87 1 0.28 1 0.20 1 0.75 1 0.641 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------------------------
1 Flow
1 CBOD
I NBOD 1
D.O.
1 cfs
1 mg/1
1 mg/l l
mg/1
Segment 1
Reach 1
Waste
1 0.093
1 45.000
1 90.000 1
5.000
Headwatersl 32.000'1
2.000
1 1.000 1
6.530
Tributary
1 0.000
1 2.000
1 1.000 1
7.170
Runoff
1 0.000
1 2.000
1 1.000 1
7.170
Segment 1
Reach 2
Waste
1 0.000
1 13.500
1 27.000 1
6.000
Tributary
1 0.000
1 2.000
1 1.000 1
7.170
* Runoff
1 0.000
1 2.000
1 .1.000 i
7.170
* Runoff flow is in cfs/mile

SUMMER
HOOKERTON
ONLY
Seg #
I Reach #
I Seg Mi I
D.O. I
CBOD I
NBOD I
Flow
1
1
0.00
6.53
2.12
1.26
32.09
1
1
0.10
6.46
2.10
1.23
32.09
1
1
0.20
6.39
2.07
1.20
32.09
1
1
0.30
6.33
2.05
1.18
32.09
1
1
0.40
6.27
2.02
1.15
32.09
1
1
0.50
6.22
2.00
1.13
32.09
1
1
0.60
6.16
1.98
1.10
32.09
1
1
0.70
6.11
1.95
1.08
32.09
1
2
0.40
6.11
1.95
1.08
32.09
1
2
0.90
5.89
1.84
0.97
32.09
1
2
1.40
5.72
1.73
0.87
32.09
1
2
1.90
5.59
1.63
0.78
32.09
1
2
2.40
5.49
1.54
0.69
32.09
1
2
2.90
5.42
1.45
0.62
32.09
1
2
3.40
5.37
1.36
0.56
32.09
1
2
3.90
5.34
1.28
0.50
32.09
1
2
4.40
5.32
1.21
0.45
32.09
1
2
4.90
5.32
1.14
0.40
32.09
1
2
5.40
5.32
1.07
0.36
32.09
1
2
5.90
5.34
1.01
0.32
32.09
1
2
6.40
5.35
0.95
0.29
32.09
1
2
6.90
5.37
0.89
0.26
32.09
1
2
7.40
5.40
0.84
0.23
32.09
1
2
7.90
5.42
0.79
0.21
32.09
1
2
8.40
5.45
0.75
0.19
32.09
1
2
8.90
5.48
0.70
0.17
32.09
Seg # I
Reach # I
Seg Mi I
D.O. I
CBOD I
NBOD I
Flow

SUMMER
9/6/6 0.225 MGD
MODEL RESULTS
Discharger
:
MAURY SANITARY DISTRICT
Receiving Stream :
CONTENTNEA
CREEK
----------------------------------------------------------------------
The End D.O.
is 5.40
mg/l.
The End CBOD
is 0.75
mg/l.
The End NBOD
--------------------------------------------------------------=-------
is 0.21
mg/l.
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste F1,
(mg/1)
------
Milepoint
---------
Reach ## (mg/1)
------- ----
(mg/1)
----
(mg/1)
--
(mgd)
--------
Segment 1
5.22
4.90
2
Reach 1
45.00
90.00
5.00
0.0600
Reach 2
13.50
27.00
6.00
0.2250

*** MODEL SUMMARY DATA ***
Discharger : MAURY SANITARY DISTRICT Subbasin 030
Receiving Stream : CONTENTNEA CREEK Stream Class: C-SW
SW
Summer 7Q10 : 32.0 Winter 7Q10 : 60.0
Design Temperature: 27.0
1LKNGTHI SLOPRI VELOCITY I DEPTH1 Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/mil fps I ft Idesignl @201 ldesignl 0201 Idesignl 0201 ldesignl @201 Idesignl @200 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I
Segment 1 1 0.701 0.631 0.143 1 3.87 1 0.28 1 0.20 1 0.75 1 0.641 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
qwh 1 I I I I I I I I I I I I I
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 8.801 0.631 0.144 1 3.88 1 0.28 1 0.20 1 0.75 1 0.641 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------------------------
1 Flow
1 CBOD
1 NBOD 1
D.O. 1
1 cfs
1 mg/l
1 mg/l i
mg/l 1
Segment 1
Reach 1
Waste
1 0.093
i 45.000
1 90.000 (
5.000
Headwatersl 32.000
1 2.000
1 1.000 1
6.530
Tributary
1 0.000
1 2.000
1 1.000 1
7.170
Runoff
1 0.000
1 2.000
1 1.000 1
7.170
Segment 1
Reach 2
Waste
1 0.349
1 13.500
1 27.000 i
6.000
Tributary
1 0.000
1 2.000
1 1.000 1
7.170
* Runoff
1 0.000
1 2.000
1 1.000 1
7.170
* Runoff flow is in cfs/mile

a
SUMMER
9/6/6
0.225 MGD
- Seg
Reach
Seg Mi
D.O.
CBOD
NBOD
Flow
1
1
0.00
6.53
2.12
1.26
32.09
1
1
0.10
6.46
2.10
1.23
32.09
1
1
0.20
6.39
2.07
1.20
32.09
1
1
0.30
6.33
2.05
1.18
32.09
1
1
0.40
6.27
2.02
1.15
32.09
1
1
0.50
6.22
2.00
1.13
32.09
1
1
0.60
6.16
1.98
1.10
32.09
1
1
0.70
6.11
1.95
1.08
32.09
1
2
0.40
6.11
2.08
1.36
32.44
1
2
0.90
5.86
1.96
1.22
32.44
1
2
1.40
5.66
1.84
1.09
32.44
1
2
1.90
5.51
1.74
0.98
32.44
1
2
2.40
5.40
1.64
0.88
32.44
1
2
2.90
5.33
1.54
0.79
32.44
1
2
3.40
5.27
1.45
0.71
32.44
1
2
3.90
5.24
1.37
0.63
32.44
1
2
4.40
5.22
1.29
0.57
32.44
1
2
4.90
5.22
1.21
0.51
32.44
1
2
5.40
5.22
1.14
0.46
32.44
1
2
5.90
5.24
1.08
0.41
32.44
1
2
6.40
5.26
1.02
0.37
32.44
1
2
6.90
5.28
0.96
0.33
32.44-
1
2
7.40
5.31
0.90
0.29
32.44
1
2
7.90
5.34
0.85
0.26
32.44
1
2
8.40
5.37
0.80
0.24
32.44
1
2
8.90
5.40
0.75
0.21
32.44
Seg #
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow

obs date temp (c) DO DO sat % sat
23
6
8.58
0.70
24
6.5
8.42
0.77
27
6
7.97
0.75
27.00
6.00
7.97
0.75
28.00
6.00
7.83
0.77
30.00
6.00
7.56
0.79
28.00
6.00
7.83
0.77
29.00
6.00
7.69
0.78
29.00
6.00
7.69
0.78
26.00
6.00
8.11
0.74
34.00
6.00
7.06
0.85
28.00
6.00
7.83
0.77
26.00
6.00
8.11
0.74
34.00
6.00
7.06
0.85
28.00
6.00
7.83
0.77
26.00
6.00
8.11
0.74
25.00
7.50
8.26
0.91
24.00
7.20
8.42
0.86
22.00
7.30
8.74
0.84
24.00
7.00
8.42
0.83
27.00
5.50'
7.97
0.69
28.00
7.10
7.83
0.91
26.00
7.40
8.11
0.91
29.00
8.50
7.69
1.11
26.00
7.20
8.11
0.89
26.00
6.80
8.11
0.84
25.00
7.90
8.26
0.96
25.00
6.90
8.26
0.84
25.00
6.60
8.26
0.80
0.82

CONTENTNEA CREEK AT HOOKERTON, NC
37079 NORTH CAROLINA GREENE
SOUTHEAST 030407
NEUSE
DATE TIME DEPTH 00
FROM OF
DAY TIME FEET MG/L
88/06/13
1125
0
6.8
89/06/07
1110
0
4.7
89/07/11
1210
0
4.5
89/08/08
1045
0
4.7
90/06/19
930
0
5.3
90/07/26
1100
0
4.8
90/08/22
1005
0
5
91 /06/1 1
1035
0
5.6
91 /07/1 1
1100
0
4.4
91 /08/1 4
1000
0
4.3
DATE
TIME FEET
TEMP
88/06/13
1125
0
19
89/06/07
1110
0
24
89/07/11
1210
0
27
89/08/08
1045
0
25
90/06/19
930
0
25
90/07/26
1100
0
28
90/08/22
1005
0
25
91 /06/1 1
1035
0
23
91 /07/1 1
1100
0
28
91 /08/14
1000
0
24

r
SUMMER
CBOD ALLOCATION0.225
---------- MODEL RESULTS ----------
Discharger : MAURY SANITARY DISTRICT
Receiving Stream : CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O. is 5.11 mg/l.
The End CBOD is 1.46 mg/l.
The End NBOD is 0.17 mg/l.
----------------------------------------------------------------------
WLA
WLA
WLA
DO Min CBOD
NBOD
DO
Waste Fl
----------------------
( 4ig/1- )
Tig/1)
(mgd )
----
Segment 1 4.90 4.90 2
----
--
--------
Reach 1 45.00
90.00
5.00
0.0600
Reach 2 194.00
0.00
6.00
0.2250

SUMMER
NBOD ALLOCATION0.225
---------- MODEL RESULTS ----------
Discharger : MAURY SANITARY DISTRICT
Receiving Stream : CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O. is 5.33 mg/l.
The End CBOD is 0.70 mg/l.
The End NBOD is 0.29 mg/l.
---------------------------------=------------------------------------
WLA
DO Min CBOD
(mg/1) Milepoint Reach # (mg/1)
Segment 1 5.10 4.90 2
Reach 1 45.00
Reach 2 0.00
WLA WLA
NBOD DO Waste F1,
(mg/1) (mg/1) (mgd)
90.00 5.00 0.0600,
74.00 6.00 0.2250,

3v
0
0
m
k6
Nil 3-N (mg/1)
Potential effluent limit. combinations:
QOD5 NH3-N -

,y
SUMMER
10/4/6 0.225 MGD
---------- MODEL RESULTS ----------
Discharger : MAURY SANITARY DISTRICT
Receiving Stream : CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O. is 5.42 mg/l.
The End CBOD is 0.76 mg/l.
The End NBOD is 0.20 mg/l.
----------------------------------------------------------------------
WLA
WLA
WLA
DO Min CBOD
NBOD
DO
Waste F1
(mg/1) Milepoint Reach # (mg/1)
---------------------- ----
(mg/1)
----
(mg/1)
--
(mgd)
--------
Segment 1 5.24 4.90 2
Reach 1 45.00
90.00
5.00
0.0600
Reach 2 15.00
18.00
6.00
0.2250

*** MODEL SUMMARY DATA ***
Discharger : MAURY SANITARY DISTRICT Subbasin : 030
Receiving Stream : CONTENTNEA CREEK Stream Class: C-S'
NSW
Summer 7Q10 : 32.0 Winter 7Q10 : 60.0
Design Temperature: 27.0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/mil fps I ft Idesignl @201 Idesignl @201 Idesignl @200 Idesignl @201 Idesignl @200 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 0,701 0.631 0.143 1 3.87 1 0.28 1 0.20 1 0.75 1 0,641 0,51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 1 I I I I I I I I I I I
-------------------------------------------------------------------------------------------------------------------
I I I I I
Segment 1 1 8.801 0.631 0.144 1 3.88 1 0.28 1 0.20 1 0.75 1 0,641 0,51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 21 1 1 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------------------------
1 Flow
I CBOD
1 NBOD I
D.O. 1
1 cfs 1
mg/l
1� mg/1 1
mg/l 1
Segment 1
Reach 1
Waste
1 0.093
1 45.000
1 90.000 1
5.000
Headwatersl 32.000
1 2.000
1 1.000 1
6.530
Tributary
1 0.000
1 2.000
1 1.000 1
7.170
X Runoff
1 0.000
1 2.000
1 1.000 1
7.170
Segment 1
Reach 2
Waste
1 0.349
1 15.000
1 18.000 1
6.000
Tributary
1 0.000
1 2.000
1 1.000 1
7.170
X Runoff
1 0.000
1 2.000
1 1.000 1
7.170
* Runoff flow is in cfs/mile

SUMMER
10/4/6 0.225 MGD
Seg #
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow
1
1
0.00
6.53
2.12
1.26
32.09
1
1
0.10
6.46
2.10
1.23
32.09
1
1
0.20
6.39
2.07
1.20
32.09
1
1
0.30
6.33
2.05
1.18
32.09
1
1
0.40
6.27
2.02
1.15
32.09
1
1
0.50
6.22
2.00
1.13
32.09
1
1
0.60
6.16
1.98
1.10
32.09
1
1
0.70
6.11
1.95
1.08
32.09
1
2
0.40
6.11
2.09
1.26
32.44
1
2
0.90
5.87
1.97
1.13
32.44
1
2
1.40
5.68
1.86
1.01
32.44
1
2
1.90
5.53
1.75
0.91
32.44
1
2
2.40
5.43
1.65
0..81
32.44
1
2
2.90
5.35
1.55
0.73
32.44
1
2
3.40
5.30
1.46
0.65
32.44
1
2
3.90
5.26
1.38
0.59
32.44
1
2
4.40
5.25
1.30
0.53
32.44
1
2
4.90
5.24
1.22
0.47
32.44
1
2
5.40
5.25
1.15
0.42
32.44
1
2
5.90
5.26
1.09
0.38
32.44
1
2
6.40
5.28
1.02
0.34
32.44
1
2
6.90
5.30
0.96
0.31
32.44
1
2
7.40
5.33
0.91
0.27
32.44
1
2
7.90
5.36
0.86
0.25
32.44
1
2
8.40
5.39
0.81
0.22
32.44
1
2
8.90
5.42
0.76
0.20
32.44
Seg
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow

WINTER
20/8/6 0.225
---------- MODEL RESULTS ----------
Discharger : MAURY SANITARY DISTRICT
Receiving Stream : CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O. is 8.24 mg/l.
The End CBOD is 1.47 mg/l.
The End NBOD is 0.79 mg/l.
----------------------------------------------------------------------
WLA
WLA
WLA
DO Min CBOD
NBOD
DO
Waste F1i
(mg/1) Milepoint Reach # (mg/1)
---------------------- ----
(mg/1)
----
(mg/1)
--
(mgd)
---------
Segment 1 8.24 8.90 2
Reach 1 45.00
90.00
5.00
0.06001
Reach 2 30.00
36.00
6.00
0.2250,

*** MODEL SUMMARY DATA ***
Discharger : MAURY SANITARY DISTRICT Subbasin : 030,
Receiving Stream : CONTENTNEA CREEK Stream Class: C-SI
NSW
Summer 7Q10 : 32.0 Winter 7Q10 : 60.0
Design Temperature: 16.0
ILENGTHI SLOPHI VELOCITY I DHPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/mi1 fps I ft Idesignl @201 Idesignl @201 Idesignl @201 Idesignl @201 Idesignl @201 1
-------------------------------------------------------------------------------------------------------------------
I I I I
Segment 1 1 0.701 0.631 0,229 1 4.19 1 0.17 1 0.21 1 0.66 1 0.721 0.22 1 0.30 1 0.22 1 0.00 1 0.86 1 1.10 1
Reach 1 I I I I I I I I I I
-------------------------------------------------------------------------------------------------------------------
Segment 1 1 8.801 0,631 0.230 1 4.19 1 0.17 1 0,21 1 0.66 1 0.721 0.22 1 0.30 1 0.22 1 0.00 1 0.86 1 1,10 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------------------------
Flow
1 CBOD
I NBOD I
D.O. 1
1 cfs
1 mg/l I
mg/l I
mg/l
Segment 1
Reach 1
Waste
1 0.093
1 45.000
1 90.000 1
5.000
Headwatersl 60.000
1 2.000
1 1.000 1
8.880
Tributary
1 0.000
1 2.000'1
1.000 1
8.880
* Runoff
1 0.000
1 2.000
1 1.000 1
8.880
Segment 1
Reach 2
Waste
1 0.349
1 30.000
1 36.000 1
6.000
Tributary
1 0.000
1 2.000
1 1.000 1
8.880
* Runoff
1 0.000
1 2.000
1 1.000 1
8.880
* Runoff flow is in cfs/mile

WINTER
20/8/6 0.225
Seg #
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow
1
1
0.00
8.87
2.07
1.14
60.09
1
1
0.10
8.86
2.06
1.13
60.09
1
1
0.20
8.84
2.05
1.12
60.09
1
1
0.30
8.83
2.04
1.12'
60.09
1
1
0.40
8.81
2.03
1.11
60.09
1
1
0.50
8.80
2.02
1.10
60.09
1
1
0.60
8.78
2.01
1.10
60.09
1
1
0.70
8.77
2.00
1.09
60.09
1
2
0.40
8.75
2.16
1.29
60.44
1
2
0.90
8.68
2.11
1.26
60.44
1
2
1.40
8.61
2.07
1.22
60.44
1
2
1.90
8.55
2.02
1.18
60.44
1
2
2.40
8.50
1.97
1.15
60.44
1
2
2.90
8.46
1.93
1.12
60.44
1
2
3.40
8.42
1.89
1.08
60.44
1
2
3.90
8.39
1.84
1.05
60.44
1
2
4.40
8.36
1.80
1.02
60.44
1
2
4.90
8.33
1.76
0.99
60.44
1
2
5.40
8.31
1.72
0.96
60.44
1
2
5.90
8.29
1.68
0.94
60.44
1
2
6.40
8.28
1.65
0.91
60.44
1
2
6.90
8.27
1.61
0.88
60.44
1
2
7.40
8.26
1.57
0.86
60.44
1
2
7.90
8.25
1.54
0.83
60.44
1
2
8.40
8.24
1.50
0.81
60.44
1
2
8.90
8.24
1.47
0.79
60.44
Seg #
Reach #
Seg Mi
D.O. (
CBOD
NBOD
Flow

CHLORINE ANALYSIS:
7Q10: 34 cfs
CL2 Effl. Conc: 17 mg/l
AL (17/19 ug/1): 17.00 ug/l
Upstream CL2 Cpnc.: 0.0000 ug/l
Design Flow: 0.2250 MGD
Predicted CL2 Downstream: 172.60 ug/l
0.1726 mg/l
CL2 Limit: 1674.3 ug/l
1.6743 mg/l

AMMONIA ANALYSIS:
SUMMER
7Q10: 34.00 cfs
NH3-N Effl. Conc: 0.22 mg/l
Standard (1 mg/1): 1000 ug/l
Upstream NH3-N Conc.: 220.00 ug/l
Design Flow: 0.2250 MGD
Predicted NH3-N Instream: 220.00 ug/l
0.22 mg/l
NH3-N Limit: 77043. ug/l
77.043 mg/l
WINTER
7Q10: 60.00 cfs
NH3-N Effl. Conc: 0.22 mg/l
Standard (1.8 mg/1): 1800 ug/l
Upstream NH3-N Conc.: 220.00 ug/l
Design Flow: 0.2250 MGD
Predicted NH3-N Instream: 220.00 ug/l
0.22 mg/l
NH3-N Limit: 273627 ug/l.
273.62 mg/l

SUMMER
14/3/6 0.225
---------- MODEL RESULTS ----------
Discharger : MAURY SANITARY DISTRICT
Receiving Stream : CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O. is 5.42 mg/l.
The End CBOD is. 0.78 mg/l.
The End NBOD is 0.19 mg/l.
----------------------------------------------------------------------
WLA
WLA
WLA
DO Min CBOD
NBOD
DO
Waste F1,
(mg/1) Milepoint Reach # (mg/1)
---------------------- ----
(mg/1)
----
(mg/1)
--
(mgd)
--------
Segment 1 5.24 4.90 2
Reach 1 45.00
90.00
5.00
0.0600
Reach 2 21.00
13.50
6.00
0.2250

so
*** MODEL SUMMARY DATA ***
Discharger : MAURY SANITARY DISTRICT Subbasin : 030,
Receiving Stream : CONTENTNEA CREEK Stream Class: C-S'
NSW
Summer 7Q10 : 32.0 Winter 7Q10 : 60.0
Design Temperature: 27.0
1LHNGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/mil fps I ft ldesigpl @201 Idesignl @201 Idesignl @201 ldesignl @200 Idesignl @201 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I
Segment 1 1 0.701 0,631 0,143 1 3,87 1 0,28 1 0,20 1 0,75 1 0,641 0.51 1 0.30 1 0.51 1 0,00 1 1,71 1 1,10 1
Reach 1 I I I I I I I I I I I
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 8,801 0,631 0,144 1 3,88 1 0,28 1 0.20 1 0,75 1 0,641 0,51 1 0,30 1 0,51 1 0.00 1 1,71 1 1,10 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------------------------
1 Flow
1 CBOD
1 NBOD 1
D.O. 1
1 cfs
i mg/l 1
mg/1 1
mg/l 1
Segment 1
Reach 1
Waste
1 0.093
1 45.000 1
90.000 1
5.000
Headwatersl 32.000
1 2.000
1 1.000 1
6.530
Tributary
1 0.000
1 2.000 1
1.000 1
7.170
* Runoff
1 0.000
1 2.000
1 1.000 1
7.170
Segment 1
Reach 2
Waste
1 0.349
1 21.000 1
13.500 1
6.000
Tributary
1 0.000
1 2.000
1 1.000 1
7.170
* Runoff
1 0.000
1 2.000 1
1.000 1
7.170
* Runoff flow is in cfs/mile

4
SUMMER
14/3/6 0.225
Seg #
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow
1
1
0.00
6.53
2.12
1.26
32.09
1
1
0.10
6.46
2.10
1.23
32.09
1
1
0.20
6.39
2.07
1.20
32.09
1
1
0.30
6.33
2.05
1.18
32.09
1
1
0.40
6.27
2.02
1.15
32.09
1
1
0.50
6.22
2.00
1.13
32.09
1
1
0.60
6.16
1.98
1.10
32.09
1
1
0.70
6.11
1.95
1.08
32.09
1
2
0.40
6.11
2.16
1.21
32.44
1
2
0.90
5.87
2.03
1.09
32.44
1
2
1.40
5.68
1.92
0.97
32.44
1
2
1.90
5.54
1.80
0.87
32.44
1
2
2.40
5.43
1.70
0.78
32.44
1
2
2.90
5.35
1.60
0.70
32.44
1
2
3.40
5.30
1.51
0.63
32.44
1
2
3.90
5.27
1.42
0.56
32.44
1
2
4.40
5.25
1.34
0.51
32.44
1
2
4.90
5.24
1.26
0.45
32.44
1
2
5.40
5.25
1.19
0.41
32.44
1
2
5.90
5.26
1.12
0.36
32.44
1
2
6.40
5.28
1.06
0.33
32.44
1
2
6.90
5.30
0.99
0.29
32.44
1
2
7.40
5.33
0.94
0.26
32.44
1
2
7.90
5.36
0.88
0.24
32.44
1
2
8.40
5.39
0.83
0.21
32.44
1
2
8.90
5.42
0.78
0.19
32.44
Seg #
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow

SUMMER
10/4/6 0.225
VEL 0.1
---------- MODEL RESULTS ----------
Discharger : MAURY SANITARY DISTRICT
Receiving Stream : CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O. is 4.78 mg/l.
The End CBOD is 0.48 mg/l.
The End NBOD is 0.08 mg/l.
-------------=--------------------------------------------------------
WLA
WLA
WLA
DO Min CBOD
NBOD
DO
Waste Fl
(mg/1) Milepoint Reach # (mg/1)
---------------------- ----
(mg/1)
----
(mg/1)
--
(mgd)
--------
Segment 1 4.56 4.90 2
Reach 1 45.00
90.00
5.00
0.0600
Reach 2 15.00
18.00
6.00
0.2250

*** MODEL SUMMARY DATA ***
Discharger : MAURY SANITARY DISTRICT Subbasin : 030,
Receiving Stream : CONTENTNEA CREEK Stream Class: C-S1
NSW
Summer 7Q10 : 32.0 Winter 7Q10 : 60.0
Design Temperature: 27.0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KH I KNR I KNR I SOD I SOD I
I mile I ft/mil fps I ft Idesignl @20° Idesignl @201 Idesignl @201 Idesignl @201 Idesignl @201 1
-------------------------------------------------------------------------------------------------------------------
I I I I I
Segment 1 1 0.701 0.631 0.100 1 4.63 1 0.28 1 0.20 1 0.48 1 0.411 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 1 1 1 1 1 1 1 1 1 1 1 1 1 1
-------------------------------------------------------------------------------------------------------------------
I I I I I
Segment 1 1 8.801 0.631 0.100 1 4.65 1 0.28 1 0.20 1 0.47 1 0,411 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------------------------
1 Flow
1 CBOD
I NBOD I
D.O. 1
1 cfs
1 mg/1
1 mg/1 1
mg/1 1
Segment 1
Reach 1
Waste
1 0.093
1 45.000
1 90.000 1
5.000
Headwaters) 32.000
1 2.000
1 1.000 1
6.530
Tributary
1 0.000
1 2.000
1 1.000 i
7.170
* Runoff
1 0.000
1 2.000
1 1.000 1
7.170
Segment 1
Reach 2
Waste
1 0.349
1 15.000
1 18.000 1
6.000
Tributary
( 0.000
1 2.000
1 1.000 1
7.170
* Runoff
i 0.000
1 2.000
1 1.000 1
7.170
* Runoff flow is in cfs/mile

SUMMER
10/4/6
0.225
VEL 0.1
Seg #
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow
1
1
0.00
6.53
2.12
1.26
32.09
1
1
0.10
6.42
2.09
1.22
32.09
1
1
0.20
6.32
2.05
1.18
32.09
1
1
0.30
6.22
2.02
1.14
32.09
1
1
0.40
6.13
1.98
1.11
32.09
1
1
0.50
6.05
1.95
1.08
32.09
1
1
0.60
5.96
1.92
1.04
32.09
1
1
0.70
5.88
1.89
1.01
32.09
1
2
0.40
5.89
2.03
1.19
32.44
1
2
0.90
5.51
1.86
1.02
32.44
1
2
1.40
5.22
1.71
0.87
32.44
1
2
1.90
5.00
1.57
0.74
32.44
1
2
2.40
4.84
1.44
0.64
32.44
1
2
2.90
4.72
1.32
0.54
32.44
1
2
3.40
4.64
1.22
0.46
32.44
1
2
3.90
4.59
1.12
0.40
32.44
1
2
4.40
4.56
1.03
0.34
32.44
1
2
4.90
4.56
0.94
0.29
32.44
1
2
5.40
4.56
0.86
0.25
32.44
1
2
5.90
4.58
0.79
0.21
32.44
1
2
6.40
4.60
0.73
0.18
32.44
1
2
6.90
4.64
0.67
0.15
32.44
1
2
7.40
4.67
0.61
0.13
32.44
1
2
7.90
4.71
0.56
0.11
32.44
1
2
8.40
4.75
0.52
0.10
32.44
1
2
8.90
4.78
0.48
0.08
32.44
Seg #
Reach #
Seg Mi
D.O.
CBOD (
NBOD
Flow

SUMMER
10/4/6 0.225
VEL 0.2
---------- MODEL.RESULTS----------
Discharger : MAURY SANITARY DISTRICT
Receiving Stream : CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O. is 5.91 mg/l.
The End CBOD is 1.02 mg/l.
The End NBOD is 0.34 mg/l.
----------------------------------------------------------------------
WLA
WLA
WLA
DO Min CBOD
NBOD
DO
Waste Fl
(mg/1) Milepoint Reach # (mg/1)
---------------------- ----
(mg/1)
----
(mg/1)
--
(mgd)
--------
Segment 1 5.77 4.40 2
Reach 1 45.00
90.00
5.00
0.0600
Reach 2 15.00
18.00
6.00
0.2250

4..
*** MODEL SUMMARY DATA ***
Discharger : MAURY SANITARY DISTRICT Subbasin : 030
Receiving Stream : CONTENTNEA CREEK Stream Class_: C-S'
NSW
Summer 7Q10 : 32.0 Winter 7Q10 : 60.0
Design Temperature: 27.0
ILENGTHI SLOPEI VELOCITY I DEPTHI Xd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/mil fps I ft Idesignl @201 Idesignl @201 Idesignl @201 Idesignl @201 ldesignl @201 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I
Segment 1 1 0.701 0.631 0.180 1 3.45 1 0.28 1 0.21 1 1.00 1 0.851 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 1 I I I I I I I
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 8.801 0.631 0.200 1 3.29 1 0.28 1 0.21 1 1.13 1 0.971 0.51 1 0.30 1 0.51 1 0.00 1 1.71 1 1.10 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-----------------------------------------------------------------------------------------------------
1 Flow 1
CBOD
1 NBOD 1
D.O. 1
1 cfs I
mg/l
I mg/1 I
mg/1
Segment 1
Reach 1
Waste
1 0.093 1
45.000
1 90.000 1
5.000
Headwatersl 32.000 1
2.000
1 1.000 1
6.530
Tributary
1 0.000 1
2.000
i 1.000 1
7.170
* Runoff
1 0.000 1
2.000
1 1.000 1
7.170
Segment 1
Reach 2
Waste
1 0.349 1
15.000
1 18.000 1
6.000
Tributary
1 0.000 1
2.000
1 1.000 1
7.170
* Runoff
1 0.000 i
2.000
1 1.000 1
7.170
* Runoff flow is in cfs/mile

SUMMER
10/4/6
0.225
VEL 0.2
Seg #
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow
1
1
0.00
6.53
2.12
1.26
32.09
1
1
0.10
6.48
2.10
1.24
32.09
1
1
0.20
6.43
2.08
1.21
32.09
1
1
0.30
6.39
2.06
1.19
32.09
1
1
0.40
6.35
2.04
1.17
32.09
1
1
0.50
6.31
2.02
1.15
32.09
1
1
0.60
6.27
2.01
1.13
32.09
1
1
0.70
6.23
1.99
1.11
32.09
1
2
0.40
6.23
2.13
1.29
32.44
1
2
0.90
6.09
2.04
1.20
32.44
1
2
1.40
5.99
1.95
1.11
32.44
1
2
1.90
5.91
1.87
1.02
32.44
1
2
2.40
5.85
1.79
0.95
32.44
1
2
2.90
5.81
1.71
0.87
32.44
1
2
3.40
5.79
1.64
0.81
32.44
1
2
3.90
5.77
1.57
0.75
32.44
1
2
4.40
5.77
1.50
0.69
32.44
1
2
4.90
5.77
1.44
0.64
32.44
1
2
5.40
5.78
1.38
0.59
32.44
1
2
5.90
5.79
1.32
0.55
32.44
1
2
6.40
5.81
1.26
0.50
32.44
1
2
6.90
5.83
1.21
0.47
32.44
1
2
7.40
5.85
1.16
0.43
32.44
1
2
7.90
5.87
1.11
0.40
32.44
1
2
8.40
5.89
1.06
0.37
32.44
1
2
8.90
5.91
1.02
0.34
32.44
Seg #
Reach # i
Seg Mi
D.O.
CBOD
NBOD
Flow

191
State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27604
James G. Martin, Governor A. Preston Howard, Jr., P.E.
William W. Cobey, Jr., Secretary Acting Director
August 18, 1992
Mr. F. Tyndall Lewis. PE
MacDavid Associates. Inc.
P.O. Box 1776
Goldsboro, N.C. 27533
Subject: Maury Sanitary Land District Wasteload
Allocation
NPDES Permit No. NCO061492
Greene County
Dear Mr. Lewis:
The North Carolina Division of Environmental Management (DEM) is in receipt of
your letter dated July 2, 1992, requesting speculative NPDES permit limitations for a
proposed expansion of the subject WWTP to 0.2 MGD. On July 29, 1992 a formal NPDES
permit application for a 0.225 MGD expansion was also received. This letter is to provide
you with the recommended effluent limitations contained in the wasteload allocation
(WLA) prepared for the permit application.
The subject WWTP is proposed to discharge into Contentnea Creek, which is
classified as C-Swamp-NSW waters. USGS records indicate that the stream, at the
discharge site, has the following streamflow statistics: S7Q10 = 34 cfs, W7Q10 = 60 cfs,
30Q2 = 103 cfs and QA =880 cfs. The streambed gradient is 0.64 ff/mile.
The slow moving nature of Contentnea Creek results in substandard instream
dissolved oxygen (DO) concentrations during critical conditions (i.e. warm weather/low
flow periods). Substandard DO concentrations have been documented at all three
DEM ambient stations located in Contentnea Creek (i.e. near Lucama, at Hookerton,
and at Griffon). Also, modeling analyses, work by the Research Triangle Institute, non
point source data, and field observations have indicated that the assimilative capacity
of the lower Contentnea Creek is severely compromised.
Therefore, the Contentnea Creek subbasin has been targeted for a
comprehensive evaluation within the next five years. This office will develop a field
calibrated QUAL2E model to determine the assimilative capacity of oxygen consuming
wastes in the subbasin more accurately. Non point source and groundwater studies will
also be performed by DEM.
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

Fa
Attached you will find a copy of the WLA being recommended for the subject
facility pending review of the required engineering evaluation of alternatives. These
permit limitations were developed from a combination of desktop (Level B) modeling
and Divisional procedures. You should note that these limits have not been reviewed by
regional office staff, and final limits may change based on their recommendations.
Please note that more stringent oxygen consuming and nutrient limitations may
be required in the future when the Contentnea Creek studies are completed in
preparation for the next permitting cycle for the Neuse River Basin Plan (scheduled for
1998). DEM's Technical Support Branch anticipates that effluent limitations that would
approach state-of-the-art technology (i.e. BOD5 = 5 mg/I and NH3-N = 2 mg/1) may be
required. Also, the findings of the nutrient loading study may indicate a need for further
nutrient reductions in the subbasin. Therefore, it is recommended that you consider this
in your design plans and allow for plant flexibility to comply with more stringent NPDES
permit limitations in the future.
If you have any questions concerning this WLA, please contact Mr. Juan C.
Mangles of my staff at [phone], ext. 515.
JTC/JCM
Attachment
cc: Roger Thorpe
Colleen Sullins
Allen Wahab
WLA Files
Central Files
Sin eely,
T evor Clem�ents-,�Assistant Chief
er Quality Section
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

z
Mc DAVID ASSOCIATES , INC.
ENGINEERS • PLANNERS • LAND SURVEYORS
HOME OFFICE • 120 NORTH MAIN STREET/P.O. DRAWER 49, FARMVILLE, N.C. 27826 [phone]
INC.1� VV 109 EAST WALNUT / P.O. BOX 1776, GOLDSBORO, N.C. 27533 • 716 SOUTH MAIN/P.O. BOX 736, KENANSVILLE,N.C. 28349
GOLDSBORO PH. (919) 736- 7630 • KENANSVILLE PH. [phone]
July 2, 1992
r•
Mr. Trevor Clements
Division of Environmental Management
P. O. Box 27687
Raleigh, NC 27611
Dear Mr. Clements:
Alt 1992
�_ _..��CttN1GAl SBpPORT BRANCH
SUBJECT: Waste Load Allocation
Maury Sanitary Land District
Greene County, NC
Maury Sanitary Land District plans to construct a 200,000 GPD wastewater treatment
plant to replace its existing 60,000 GPD facility. The new plant will be necessary to
accommodate a new prison currently in construction and two existing prisons currently jointly
served by an existing prison -owned and operated 100,000 GPD facility.
McDavid Associates is currently designing the proposed new facility and would like a
waste load allocation as soon as possible. The receiving stream is Contentnea Creek, which
bears a Class C classification. A location map is attached which illustrates the location of the
existing system and discharge location. The proposed plant will be located at the same site.
The existing force main and discharge location will remain to be used by the proposed facility.
Please expedite your review of this matter and provide the waste load allocation as
quickly as possible.
If you have any questions, please do not hesitate to contact me.
Sincerely,
McDAVID ASSOCIATES, INC.
F. Tyndall Lewis, PE
Goldsboro Office
FTL:
Attachments
cc: Maury Sanitary Land District
Roger Thorpe, DEM, Wilmington
D:\WP5IDAT\FTL\92 1
MSLD DEM LOAD ALLOCATION.LTR 920702

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IN COOPERATION WITH THE
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FEDERAL HIGHWAY ADMINISTRATIOls
KEY TO COUNTY ROAD NUMBERS
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ROADS SHOWN AS OF JAN. 1, 1980.
SCALE
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JUL-27-92 MON 14:49 FAX NO. 9197357351 P.01
Mimm Assoaxa, iNc.
Enginws a Planners a Land Sumayors
120 North Main Street
P. 0, Drawer 49
INC. FARMVILLE, N. C. 27828
r-,N. Phone No, [phone]
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