NC0031577_WASTELOAD ALLOCATION_19910219

NPDES DOCUMENT SCANNIMS COVER SNEET
NPDES Permit:
r 0031577
ite Oak Estates WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
LDocument Date: t Februar 19, 1991
This 91o0uM1keat is pro-TXted on reuse paper - iguor� ajxy
4040nte3Mt ou the reverse Held e

Refer: Basinwide / Streamline WLA File
Completed By Permits & Engineering
At Front Of Subbasin
NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO031577
PERMITTEE NAME: Mercer Environmental Corporation / White OQ.h
Facility Status: Existing
Permit Status: Renewal
Major Minor �l
Pipe No.: 001
Design Capacity: 0.120,0.22* MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments:
* Pha constmction, nly 0.12 currently in use
STREAM INDEX: 19-16
RECEIVING STREAM: Northeast Creek
Class: S C
Sub -Basin: 03-05-02
Reference USGS Quad: H29SE, Kellum (please attach)
County: Onslow
Regional Office: Wilmington Regional Office
Previous Exp. Date: 9/30/91 Treatment Plant Class: II ->III - IV
Classification changes within three miles:
Becomes SC -HOW 0 Hwv 24 Bride ca.1.5 mi.
Requested by:
Prepared by:
Reviewed by:
-toll,
Jule Shanklin Date: T 3Q191
Date: aJ/rl ?l
Date: 2 q /
5/o-krj 7qw'J
Modeler
Date Rec.
#
5�.H3
tat
q�
&03o
�;I,.1
Drainage Area (mil) .32 Avg. Streamflow (cfs):
7Q10 (cfs) /- I Winter 7Q10 (cfs)
Toxicity Limits: IWC %
Instream Monitoring:
30Q2 (cfs)
Acute/Chronic
Parameters Do Few
Upstream Y Location So *-i.
Downstream Y Location0-y
A R
Effluent
Characteristics
BODS (mg/1)
1- p
Jew, ;
!� l e
a
/S l,p
NH3-N (mg/1)
S
13
Y
!!
D.O. (mg/1)
S 0
S" o
,�'. 4
S. 4
TSS (mg/1)
30
70
F. Col. (/100 ml)
a op
a a a
a 00
C.OQ
pH (SU)
Comments: %, Cam 1i c ntc. dx A : tie 6 / / q q� .

i
MEMO
m6cy-ctl�'A-
DATE: /
SUBJECT: 60 30
C", r�
From:
• bfi�m�4
North Carolina Department of Environment,
Health, and Natural Resources
J ,®�� l ntea on geryclee Paper

PERMIT NO.: NC0031577
NPDES WASTE LC
PERM = NAME: Mercer Environmental Corporation / White
Facility Status: Existing elrm-�
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 0.120 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments:
STREAMINDEX: 19-1
RECEIVING STREAM: Northeast Creek
Class: SC
Sub -Basin: 03-05-02
Reference USGS Quad: H29SE, Kellum (please attach)
County: Onslow
Regional Office: Wilmington Regional Office
Previous Exp. Date: 9/30/91 Treatment Plant Class: II ->III - IV
Classification changes within three miles:
Becomes SC-H W 0 Hwy 24 Bride ca.1.5 mi.
Requested by: Jule Shanklin Date: 1/30/91
Prepared by: Date:
Reviewed by: Date:
v akeLL
,AD ALLOCATION ,g
Modeler Date Rec. #
t 3l
Drainage Area (mil) Avg. Streamflow (cfs):
7Q10 (cfs) Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
Effluent
Characteristics
BOD5 (m )
Summer
Winter
NH3-N (mg/1)
D.O. (mg/l)
TSS (mg/1)
F. Col. 000 ml)
,.
PH (SU)
Comments:

FACT SHEET FOR WASTELOAD ALLOCATIONS
Request # 6030 (,
Facility Name:
Mercer Environmental Corp./White0ak Estates
NPDES No.:
NC0031577
Type of Waste:
Domestic 100%
Facility Status:
Existing
��
Permit Status:
Renewal
*- ,,r.
Receiving Stream:
Northeast Creek
FEB 1
Stream Classification:
SC
1 ig9i
Subbasin:
03-05-02
y�� �rr�irgta� �,��ion! a{f�
County:
Onslow
Stream Characteristic:
Tidal D�%
Regional Office:
Wilmington
USGS #
Requestor:
Jule Shankin
Date:
Date of Request:
1/30/91
Drainage Area: 32
Topo Quad:
H29SE
Summer 7Q10: 1.4
Winter 7Q10:
Average Flow:
30Q2:
Wasteload Allocation Summary
Discharge is to the New River basin. The facility must meet phosphorous
limits by February 1, 1992.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by: ��"'/ Date •
Reviewed by
Instream Assessment
Regional Supervisor
Permits & Engineering
Date: Z.7 i
Date:
Date: 2 /f��F
RETURN TO TECHNICAL SERVICES BY: MAR 0 8 W1

-2-
Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/l00 ml):
PH (SU):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
CONVENTIONAL PARAMETERS
Monthly Ave.
Summer Winter
0.12
0.12
15.0
18.0
5.0
13.0
5.0
5.0
30.0
30.0
1000
1000
6.8-8.5
6.8-8.5
Monthly Ave.
Summer Winter
0.12
0.12
15.0
18.0
5.0
13.0
5.0
5.0
30.0
30.0
200
200
6.8-8.5
6.8-8.5
Monthly Ave.
Summer Winter
0.22
0.22
15.0
18.0
4.0
11.0
5.0
5.0
30.0
30.0
1000
1000
6.8-8.5
6.8-8.5
Monthly Ave.
Summer Winter
0.22
0.22
15.0
18.0
4.0
11.0
5.0
5.0
30.0
30.0
200
200
6.8-8.5
6.8-8.5
2 mg/l* 2 mg/l* 2 mg/l* 2 mg/l*
* Phosphorous compliance date: Feb. 1, 1992.
(New River Basin)
Limits Changes Due To: Parameter(s) Affected
Instream Data
Annu:nia Toxicity
Chlorine
Nutrient Sensitive Waters x Total P
HQW
New 7Q10 flow data
Special Modeling Studies
New facility information
New F. col. Standard x F. col.
(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 apply)

- 3 -
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Miscellaneous information pertinent to the renewal or new permit for
this discharge. Include relationship to the Basinwide management plan.
INSTREAM MONITORING REQUIREMENTS:
Upstream: Y Location: 50 ft upstream of outfall.
Downstream: Y Location: 0.4 mi. downstream of outfall.
Parameters: DO, Temp., F. col., Conductivity.
Special Instream monitoring locations or monitoring frequencies:
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 fits into basinwide plan)
Additional Information attached? No (yes or no) If yes, explain
attachments.

WLA Notes
SRB
2/4/91
Mercer Environmental Corporation / White Oak Estates.
NCO031577
- Mercer has applied for a permit renewal for their 0.22 MGD
facility. It is a phased construction, only 0.12 MGD
currently in use. Since the last WLA was completed, two
interacting discharges have been removed.
- The facility was inspected 6/19/90 and found to be well
run and in compliance.
- The receiving stream, Northeast Creek, is tidal and class
SC. Summer 7Q10 is 1.4 cfs. Northeast Creek is a trib. of
the New River.
- Instream data: During the summer of 1990, DO was below
standard both upstream and downstream. Lowest DO
concentrations were recorded in August of 1990 when average
DO was 4.2 upstream and 3.2 downstream. The two summers
preceding 1990 did not show DO violations.
- Ambient stations: Ambient station 0209317585 is on Little
Northeast Creek and has similar flow to Northeast Creek at
Mercer. This station indicates that low DO is not natural,
at least for Little Northeast Creek. In five years of
ambient data only one DO recording was below 5.0. This
stream is very close to Northeast Creek and has similar
hydraulics.
- Upstream of Mercer is a 0.3 MGD facility; Regalwood
NC0032239. This facility has a BOD limit of 30 mg/l, no
NH3-N limit. There is no instream data for this facility.
- Mercer must meet nutrient control measures for the New
River. Mercer was notified of nutrient limitations in a
letter from Steve Tedder, dated March 26, 1990. Mercer will
have to meet a phosphorous limit of 2 mg/l by Feb. 1, 1992.

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N
ROAD CLASSIFICATION SCALE 1:24 000
PRIMARY HIGHWAY LIGHT -DUTY ROAD. HARD OR 0 1 MILE
HARD SURFACE IMPROVED SURFACE
SECONDARY HIGHWAY 0 7000 FEET
HARD SURFACE =211111110=1 UNIMPROVED ROAD = _ PAR
—
0 1 KILOMETER
Latitude 34045'15" Longitude 77021'15"
Map # H29SE Sub -basin 03-05-02
Stream Class SC
Discharge Class 05
Receiving Stream Northeast Creek
Design 0 oz2 MGD Permit expires: 1/01
t
CONTOUR INTERVAL 5 FEET
QUAD LOCATION Mercer Environmental Corp.
NCO031577
Onslow County
White Oak Estates WWTP