NC0025402_wasteload allocation_19900326

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0025402
FACILITY NAME: Town of Enfield WWTP
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 0.500 MGD
Domestic (% of Flow): 88 %
Industrial (% of Flow): 12 %
Comments:
permit expiration - March 31, 1990
facility classification - Class II
stream classification change - Fishing Creek (from Enfield Raw Water
Supply Intake to Tar River) Class C
RECEIVING STREAM: Beech Swamp
Class: C-Swamp
Sub -Basin: 03-03-04
Reference USGS Quad: C28NW (please attach)
County: Halifax
Regional Office: Raleigh Regional Office
Requested by: Lula Harris Date: 10/12/89
Prepared by:
Reviewed by:
Date: /93/16
Date:
Nk\rkjvj
Modeler
Date Rec.
#
CLLS
011Ic5i
54-39
Drainage Area (mil ) 3�, 03 Avg. Streamflow (cfs):
7Q10 (cfs) 6, (I Winter 7Q10 (cfs) (j. a3 30Q2 (cfs) 0. 4(e
Toxicity Limits: IWC (g % Acute//hronic
Instream Monitoring:
Parameters O.0.) 7tnapeVah $o) e( C'ei 61, qi C®ud o Oil tr
Upstream Y S - Location O OVe di.ScAove $.
Downstream y e s Location k.2 (cu) d i ,(tCvt9.e 0 SR 1063
Effluent
Characteristics
Summewj,
MI
BOD-(mg/1)
-30
T.—it-fib to q 6
NH3-N (mg/1)
b
D.O. (mg/1) _
J.LI
dt 6 ICJ
TSS (mg/1)
-
3 6
Cam- 4t)?_!J P� �
F. Col. (/100 ml)
a O d
ittu)k 64
pH (SU)
L
L0 -
ptr y ,
MBA S (0, 00
51 I
}2eryu:4O v
PJu by hovu.i -
,Ftcati‘lci 4thof
to_ IVOifint_ciyilfd
&Ad Yy!
until- v-EDiEJNI'-h0gCi.-
(go.
kg, /I L
Comments: (J 4 1)kt ows ( un
/l t11�
Imo a pk'` MC+ i�' NP5 15 YuA Il
ed Put ZYukC, At5u3 lew l (dw`'.

Request No.:
WASTELOAD ALLOCATION APPROVAL FORM
Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Quad:
Town of Enfield WWTP
NC0025402
88% Domestic / 12%
Existing
Renewal
Beech Swamp
C-Swamp
030304
Halifax
RRO
Lula Harris
10/16/89
C28NW
RECOMMENDED EF
Wasteflow (mgd) :
BOD5 (mg/1) :
NH3N (mg/1) :
DO (mg/1) :
TSS (mg/1) :
pH (su) :
Fecal Coliform (/100m1):
MBAS (ug/1) :
Toxicity Testing Req.:
Upstream (Y/N) : Y
Downstream (Y/N): Y
Proposed
0.50
30
5
30
6-9
200
571
Industria1
Drainage
Summer
Winter
Average
5439
RECEIVED
MAR 131990
RALEIGH REGIONAL OFFICE
area: 38.030 sq mi
7Q10: 0.11 cfs
7Q10: 0.23 cfs
flow: 46.00 cfs
30Q2: 0.46 cfs
F UENT LIMITS
L mits Exists g Limits
f.,.. .` 30
C'&i\ . ► 199D
PERMITS FA
irirNEFRimq
5
30
I 6-9
1000
Chronic/ eriodaphnia/quarterly
nrVL Gtg cv
MONITORING
Location: above the discharge point
Location: below discharge at SR 1003
COMMENTS
Recommend instream monitoring for D.O., Temperature, Fecal Coliform, and
Conductivity.
This facility is inadequately built to handle the inflow. Flow is in excess
of 3.0 MGD at times. The inflow and solids problem need/to be addfffressed
with an order before renewal of the permit.
Probable Chlorine Toxicity instream - facility will receive a letter
addressing this issue. (ete,)
The facility should be informed that at-;e�e�ei r�n�••�� r� �r'
limits for total Nitrogen (4 m /cal -summer & 8 mg/1-winter) and total
phosphorus (2 mg/1 ear round) ,be implemented in this permit �-� M '
, kne'4.43 F415 - 0 1fftAtd-- -z P tcc5s - h 6015t40747.7.
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
(a.
RETURN TO TECHNICAL SERVICES BY: APR 10 1990
Date:
Date: 47./oto
Date:
Date: 344Iw

10/89'
Facility Name 1L'I(.tt4. 4� /Yt �-t�l�/ Ajw %1
Permit # (C 60.75469
CHRONIC TOXICITY TESTING REQUIREMENT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity in any two consecutive toxicity tests,
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 gg % (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform quarterly monitoring using this procedure to establish
compliance with the permit condition. The first test will be performed after thirty days from
issuance of this permit during the months of il1acr,Se,p, De C • . 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
P.O. Box 27687
Raleigh, N.C. 27611
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 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 6• 1 1 cfs
Permited Flow £ . SD MGD Recommended by:
IWC%
(
Basin & Sub -basin 0303 04 � �"'
Receiving Stream BeczA_,506 vvtp 041-do— Q6'vL)
County /-1a Li'
Date 31 q1)
**Chronic Toxicity (Ceriodaphnia) P/F at gg %,fll4YS2n,so}p, Oa, See Part 3 , Condition Id