NC0063720_Wasteload Allocation_19900919

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO063720
PERMITTEE NAME: J
Facility Status: Existing
Permit Status: Renewal
Major
Minor _1
Pipe No.: 001
Design Capacity: 0.040 MGD
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
11 '.
Inc.
Su30. V,5t,
RECEIVING STREAM: Blanket Creek
Class: C
Sub -Basin: 03-07-02
Reference USGS Quad: C17SW, Clemmons (please attach)
County: Forsyth
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 3/31/91 Treatment Plant Class: II
Classification changes within three miles:
Class C to Yadkin River -> ca. 4 mi.
Requested by: Jule Shanklin
Prepared by:
Reviewed by: GtK
_Date: 9/18/90
Date: /.�`D
Date: I 0 D
Modeler
Date Rec.
I #
Drainage Area (mil) /• S� Avg. Streamflow (cfs):
7Q10 (cfs) . / S Winter 7Q10 (cfs) . 4/3 30Q2 (cfs) e SD
Toxicity Limits: IWC R� % AcutqshniD
Instream Monitoring:
Parameters `D6 , et ReeJ (Il.�.,, .. L",,
Upstream ✓ Location oD � s --
Downstream Location./1�9va,_-e a( 6. Wge—
R
Id
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
16,
3
NH3-N (mg/1)
�3
Z
D.O. (mg/1)
S
5
TSS (mg/1)
3 U
3 0
F. Cot. V100 nil)
a0 CU
'20 0
pH (SU)
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ILU
W Q L-
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N.C. Dept. NAND
NOV 5 1990
Winston-Salem Request
------------------- WASTELOADRA"§KQVM APPROVAL FORM
Facility Name:
NPDES No.:
Type of Waste:
Status:
Receiving Stream:
Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Quad:
Wasteflow (mgd):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal coliform (#/100m1):
pH (su) :
Forest Ridge Subdivision
NCO063720
Domestic
Exisiting/Renewal
Blanket Creek
C
30702
Forsyth
Winston-Salem
Jule Shanklin
9/18/9
C17SW
MENDED EFFLUENT
EXISTING
summer winter
0.040 0.040
16 30
12 monitor
5 5
30 30
1000 1000
6-9 6-9
No.: 5863
--,-----------------
v
Drainage area:
Summer 7Q10:
Winter 7Q10:
Average flow:
30Q2:
LIMITS ------
PROPOSED
summer
0.040
16
3
5
30
200
6-9
*
Toxicity Testing Req.: Chronic quarterly at Z9% *
1.520 sq mi
0.15 cfs i.
0.43 cfs
1.52 cfs
0.50 cfs
--------------
winter
0.040
30
12 AT
5
30
200
6-9
---------------------------- MONITORING ----------------------------------
PARAMETERS: DO, TEMP, COND, FECAL COLIFORM
Upstream (Y/N): Y Location: 100 feet upstream
Downstream (Y/N): Y// Location* Peace Road bridge �tL
ALL% 1�1 !_llltl�-��`� COMMEE TS-eCar�sng_ I
Renews One violation each of TSS (50) and B D5 (17) in past year.
Instream data okay; location unknown. Summer temperatures are low (13).
* Facility may have choice between existing ammonia limits with toxicity
testing OR above ammonia limits. Facility will receive a letter addressinak.
chlorine toxicity. (J
f P& -Tog:.. Tkjl sjyYa eve vn-sol_li!l_TAW-4irays__.PEE.Lcrug. Qi .
Recommended by: 0-,O'�_ Date:
Reviewed by /
Instream Assessment: �e Date:/D �l
Regional Supervisor: n..� //� G.-c�C� Date:
Permits & Engineering: y..w�.C_ Date: l(
y0(1
RETURN TO TECHNICAL SUPPORT BY: NOV 3O iJ

TPS J�ii U�Z / 1 r
10/S9
Facility Name � ���r'r�`+1. '. ; N3 7,20 ..
CHRONIC TOXICITY TESTING JZEQi. T kQ1i) P L� )
The effluent discharge shall at no time exhibit chronic toxicity ui 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 &L-To (defined as treatment two in the North Carolina procedure
document). -.The permit holder shall perform attartcrjy monitoring using this procedure to establish
compliance with the:permut condition. The. first test will be performed after thirty days from
issuance of this •pernnt during the months of .lf�lV LT .Effluent
sampling for this testing shill be performed at the NPD permitted final effluent discharge below
all treatment:processes.
w.
Alltoxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge-Mdfiitoruig otm.(MR-1) for the month in which it was performed, using the parameter
code 76P3B i tionall %DEM Form AT-1(original) is to be sent to the following address:
A N...:. ,3,.
• t
ni-
'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 die receiving stream, this
permit may be re -opened and modified to include alternate monitoring requirements or limits.
MOTE: Failure to achieve test conditions as specified in die cited document, such as minitiluni
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 5' cfs
Pernuted Flow • 0 MGD
1WC% A 9
Basin & Sub -basin 0 - O 7 - d ;L _
Receiving Stream _�LpKkekl4reeK
County
Recommended by:
"Chronic Toxicity (Ceriodaplima) P/I- at a?_,T .,j�N�J�RR�1LL�.�_Q�C_, Sec 1':=rt _� _, Condition R_-

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03 -o7-ba
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s
iss
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y-
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Ia /

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, Governor George T. Everett, Ph.D.
William W. Cobey, Jr., Secretary October 30, 1990 Director
Leonard Stogner, Jr.
Forest Ridge Subdivision
Route 3, Box 283
Harrisburg, NC 28075
Subject: Chlorine Toxicity
NDPES Permit No. NCO063720
Forsyth County
Dear Mr. Stogner:
Chlorine, a widely used wastewater disinfectant for the treatment of coliform organisms, often
remains instream in residual amounts that may prove to be toxic under critical low stream now
conditions. In the last decade, EPA assessed the potential adverse effects of chlorine to the aquatic
environment and has taken steps to reduce the impacts through the development of federal 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 developed 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
chlorine for effluent disinfection. The Division is reviewing chlorine levels from all existing
dischargers as part of their NPDES permit renewal process.
Our records indicate that chlorine from your facility's effluent discharge 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
daily 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 insuram waste
concentration (IWC) of 29%, an acceptable level of chlorine in your effluent is 58 ug/l or 0.06 mg/l.
If these levels are not feasible, you should consider dechlorination or alternate methods of
disinfection for your facility to ensure that both chlorine and bacterial limits are met. However,
please note that an authorization to construct must be obtained from this Division prior to any
alteration to your treatment plant.
The Division is currently reviewing its water quality regulations pertaining to chlorine. In
the future, effluent limits and/or dechlorination may be required of existing facilities with chlorine
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

-2-
problems. If the chlorine levels in your facility's effluent remain unchanged, a chlorine limit or
whole effluent toxicity requirement may be added to your permit limitations.
Please feel free to call 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/eaj
cc: Winston-Salem Regional Office
Central Files
Pollution Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

INSTREAM SELF -MONITORING DATA
MONTHLY AVERAGES
Discharger::&e.5 jje Su ejiv ;ov, Permit No.:
Receiving Stream: Sub -basin:
Upstream Location: Downstream Location
DATE
DEC-90
NOV-90
OCT-90
SEP-90
AUG-90
JUL-90
JUN-90
MAY-90
APR-90
MAR-90
FEB-90
JAN-90
DEC- 89
NOV- 89
OCT-89
SEP-89
AUG-89
JUL-89
JUN-89
MAY-89
APR-89
MAR-89
FEB-89
JAN-89
DEC-88
NOV-88
OCT-88
SEP-88
AUG-88
JUL-88
JUN-88
MAY-88
APR-88
MAR-88
FEB-88
JAN-88
DEC-87
NOV-87
OCT-87
SEP-87
AUG- 87
JUL-87
JUN-87
MAY-87
APR-87
MAR-87
FEB-87
JAN-87
L'oC,
NC00 37,2p
03 -07- o2.
Upstream F664e_ Downstream 4_-_ECAC
TEMP D.O. BOD5 c)@Ng Pac/ TEMP D.O. BOD5 700MCo[i
57�
/a. 3
it. a
307
17,
7, f
3i�/
!?• 0
7, !
Jy 3
/Y, s
G s
3
9• -7
/3
9. 7
to
10.r7
JO.17
a
to
�v2
IB.7
33
14,1
/1 �
h,
1a.9
_cV
1-2.
/a.Y
I8.3
3. c
<ID
18-75-
�L
ta.1
11
I7
J*Q -%