NC0037001_wasteload allocation_19900105 (2)

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0037001
FACILITY NAME: Bethany School
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 0.00375 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow): n/a
Comments
Next class change is not within three miles.
RECEIVING STREAM:
Class: C
PLOTTE
an unnamed tributary to Huffines Mil ekeek,
Sub -Basin: 03-02-03
Reference USGS Quad: B 19SE
County: Rockingham
Regional Office: Winston-Salem Regional Office
Requested by:
Prepared by:
Reviewed by:
Mack K. Wiggins, Jr.
.A
210frxdfiitter„,
(please attach)
Date: 10/17/89
Date: Z gi
Date: 1 4:;-
Modeler
Ts-sej YP
Date Rec.
ic'A 7/59
Drainage Area (mi2 ) 0.0 Sm Avg. Streamflow (cfs):
7Q1O (cfs) Q Winter 7Q1O (cfs) 3OQ2 (cfs) (:)
Toxicity Limits: IWC %
Instream Monitoring:
Acute/Chronic
•
Parameters p J D Of am a % .et ca a:4r'
Upstream `� Location .� � S�• a�o�4 c,,,'scin ctt a�
Downstream ‘./ Location 30 . A-c46u k»t c�.� an r�Q
Effluent
Characteristics
BOD2 (mg/1)
NH-N (mg/1)
D.O. (mg/1)
TSS (mg/1)
F. Col. (/100 ml)
pH (SU)
aser \el, NS1. tr3
nstwkAvc1 On r
Summer
6
30
t o o
6- y
NevlwxczAA0A
oovl dta (fin 6&\44A‘
ca..LeS«v�{
torn
Comments: nn.1
-vvs k vac^ ' o Ct „ c�
;,,,,;\ et, p tM.0 a‘i S AA,
Ain or3 sto
ou.At ANAA ov1/4;.\
Winter
6
ao
Zoo
6—q
4„\,‘ 4,, 4. a
PQA Cu/wird
1 CitOi30Q 2= o

tit
St.ctst
Vira&Q v►c;at u14 ad•tCd "me rn v
Request No
WASTELOAD ALLOCATION APPROVAL FORM
Facility Name:
NPDES No0:
Type of Waste:
Status:
Receiving Stream:
Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Quad:
Bethany School
NC0037001
Domestic
Existing/Renewal
UT to Huffines Mill
C
030203
Rockingham
Winston-Sa
Mack Wiggi
101789
B 19 SE
Creek
Drainage
Summer
Winter
Average
RECOMMENDED EFFLUENT LIMITS
EXISTING
S UMME R
Wasteflow (mgd) : 0.00375
BOD5 (mg/1): 20
NH3N (mg/1) : 11
DO (mg/1): 6
TSS (mg/1): 30
Fecal coliform (#/100m1) : 1000
pH (su) : 6-9
Toxicity Testing Req.:
EXISTING
WINTER
0000375
30
MONITORING
6
30
1000
6-9
7Q10:
7Q10:
flow:
30Q2:
5444
i••
NOV
(WLA ' 84 )
area: 0.050 sq mi
0000 cfs
0000 cfs
cfs
0000 cfs
PROPOSED
SUMMER
0000375
20
11
6
30
200
6-9
Upstream (Y/N) : Y Location: 50 ft above the discharge
Downstream (Y/N): Y Location: 30 ft below the discharge
98s
PROPOSED
WINTER
0.00375
30
6
30
200
6-9
COMMENTS
The ,
following parameters should be monitored: temp., DO, cond., and fecal
coliform. It is recommended the discharge be removed as soon as an
alternate method of waste disposal can be found, as per current
Divisional procedures for discharges to 7Q10/30Q2=0 flow streams.
Instream monitoring requirements may be dropped when the facility agrees,
in writing, to a schedule for removal of their point source discharge.
The final permit m4y contain the following: dechlorination requirement, (AAresidual chlorine limitation, and/or a permit condition to ensure S;
et
reduction of residual chlorine i th eff uent .4,4'
Prepared by: Date: I 1 to i
Juan C. Mangles
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
Ct.a.-0(
RETURN TO TECHNICAL SUPPORT BY:
DEC
Date:
Date:
Date:
29

DIVISION OF ENVIRONMENTAL MANAGEMENT
November 13, 1989
MEMORANDUM
TO: Steve Mauney
FROM: Juan C. Mangles
THROUGH: Carla Sanderson
Tom Stockton-1;5
Trevor Clements16; `k0°
SUBJECT: Instream Monitoring
Bethany School
NPDES Permit No. NC0037001
Rockingham County
A wasteload allocation request for the subject facility has been received in
this office. During the preparation of the WLA it was noticed that this facility
is not performing instream monitoring as required by the current permit. The
renewed permit will contain a new set of instream monitoring requirements.
It is recommended that the Winston-Salem Regional Office work with the permit -
tee in complying with the terms and conditions contained in the permit. Also,
based on current Divisional procedures for 7Q10/30Q2 = 0 flow streams, it is
recommended that this facility be removed as soon as an alternate method of waste
disposal can be found.
•
JCM
cc:
David Foster
Central Files
WLA File

BETHANY
CHLORINE ANALYSIS
7Q10: 0.0000 cfs
CL2 Effl. Conc: 3.0000 mg/1
AL (17/19 ug/1): 17.0000 ug/1
Upstream CL2 Conc.: 0.0000 ug/1
Design Flow: 0.0038 MGD
Predicted CL2 Downstream: 3000.0000 ug/1
3 mg/1
CL2 Limit: 17 ug/1
0.017 mg/1
BETHANY
CHLORINE ANALYSIS
7Q10: 0.0000 cfs
CL2 Effl. Conc: 3.0000 mg/1
AL (17/19 ug/1) : 17.0000 ug/1
Upstream CL2 Conc.: 0.0000 ug/1
Design Flow: 0.0038 MGD
Predicted CL2 Downstream: 3000.0000 ug/1
3 mg/1
CL2 Limit: 17 ug/1
0.017 mg/1
MAX MO AVER
MAX MO AVER

State of North Carolina
Department of Environment, Health, and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Govemor George T. Everett, Ph.D.
Director
William W. Cobey, Jr., Secretary June 13 1990
Mr. A Everett Smith
Rockingham County Schools
P.O Box 8
Wentworth, North Carolina 27375
Dear Mr Smith:
Subject: Chlorine Toxicity
Bethany Elementary
NPDES Permit No. NC0037001
Rockingham County
Chlorine, a widely used wastewater disinfectant for the treatment of
coliform organisms, often remains instream in residual amounts that may prove
t o be toxic under critical low stream flow conditions. In the last decade,
EPA assessed the potential adverse effects of chlorine to the aquatic envi-
ronment and has taken steps to reduce the impacts through the development of
f ederal criteria In 1986, EPA recommended that all states have a chlorine
standard by their next triennial review of water quality standards.
In revising its water quality standards in 1989, North Carolina devel-
o ped an action level for chlorine of 17 ug/1 (freshwater classes only). In
addition, the fecal coliform limit was reduced from 1000 colonies/100 ml to
200 colonies/ 100 ml. Under a new DEM procedure, dechlorination and chlorine
limits are now recommended for all new or expanding dischargers proposing the
use of chlorine for effluent disinfection. The Division is reviewing chlo-
✓ ine levels from all existing dischargers as part of their NPDES permit
✓ enewal process.
Our records indicate that chlorine from your facility's effluent dis-
charge is considered toxic to the receiving stream under low flow conditions,
i e., the amount of chlorine discharged causes a violation of the instream
action level for chlorine (17 ug/1) under 7Q10 conditions (the lowest average
flow for seven (7) consecutive days during a ten (10) year period) . Action
should be taken to reduce the effluent concentration of chlorine to an
acceptable level Based on your facility's instream waste concentration of
100 %, an acceptable level of chlorine in your effluent is 17 ug/1 If this
level is not feasible, you should consider dechlorination or alternate meth-
o ds of disinfection for your facility to ensure that both chlorine and bacte-
✓ ial limits are met. In addition, if your facility plans to undertake any
phase of construction, dechlorination or alternate disinfection should be
included. However, please note that an authorization to construct must be
o btained from this Division prior to any alteration to your treatment plant.
The Division is currently reviewing its water quality regulations per-
taining to chlorine. In the future, effluent limits and/or dechlorination
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Fni tt l (lnnnrti rnih, AfiirmatniP ArHnn Fmnlnver

Mr. A Everett Smith
Page Two
may be required of existing facility's with chlorine problems. If the chlo-
rine levels in your facility's effluent remain unchanged, a chlorine limit or
a whole effluent toxicity testing requirement may be added to your permit
limitations.
Please feel free to call Mr. Steve Mauney of the Division's Regional
Office at [phone], if you have any questions or comments regarding
this issue.
Sincerely,
Steve Tedder
Water Quality Section Chief
SWT/JCM
cc: Winston-Salem Regional Office
Central Files
WLA File

INSTREAM SELF -MONITORING DATA
MONTHLY AVERAGES
E
Discharger: :ex) , :C J
Receiving Stream: v" - z .
Upstream Location:
DATE
EC_89
NOV-39
`;CT 89
SEP-89
A :,_; G - 8
JUL-89
Jute-89
MAY 89
APR- 9
tot-.4.s - 8
'
L N-89
D 7-P
C: r- 8
-. L
-
-JL-88
ID
8
Js V - 8 8
L.rC-87
NOV- 8 7
SEP-87
AUG-8 7
JUL-87
'N-87
AY-87
APR-87
'AR-8 7
FEB-37
TAN-87
;EC-86
NOV-r8r
DCT-H3
_N-86
`-:_fit -86
AR - 8 6
AR-86
Upstream
L EM" D .0. DJL 5 COND
Permit No. : NCO03/ 0 0
Sub -basin: o
Downstream Location
Downstream
TEMP D.O. BOD5 COND