NC0041157_Wasteload Allocation_19931202 (4)

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NPDES WASTE L�AD ALLOCATION
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PERMIT NU.: NC0041157
Modeler Date Rec. # �
PE NAME: Caldwell Coun Board of Education ��"� 2 � � q l 6 3 3�( •
Dudle Shoals Elemen Schools �nage Area(mi ) ,27,1 Avg. Streamflow (cfs): 35;?.�
FACILTTY NAME: Y �Y
Facility Status: Existing 7Q10(cfs) 6."? Winter 7 10 (cfs) I�.q 30Q2 (cfs) ^,
Pernut Status: Modification Toxicity Limits:IWC o Acute/Chronic
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Major Minor � Instream Monitoring:
Pipe No.: 001 Parameters
Design Capacity: 0.004 MGD Upstream Location
Domestic (% of Flow): 100% Downstrea.m Location
Industrial (% of Flow):
Effluent Summer Winter �
Comments: Chara.cterisrics '
Relocarion of Outfall. BODS (m ) 3_-0 �� �
NH -N (mg/1) �
3 ov�.��-�- ph,^�-�-
REC;EIVING STREAM: � D.O. (mg/1)
U r Litde River
Class: C TSS (mg/1) �� �„�
Sub-Basin: 03-08-32 F. Col. (/100 ml)
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Reference USGS Quad: D13SE (please attach)
County: �dwell pH (SU)
Regional Off'ice:_Asheville Regional Of'fice �e5�1 ,�.�trt e,n�vto�' �✓10�,�'{�
Previous Exp.Date: 4/30/'94 Treatment Plant Class: 1
Classification changes within three miles:
No chan�e within three miles.
Requested by: Mack Wi 'ns Date: 7/1/91
Prepared by: Date: , � • 9'/ Comments:
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Reviewed by: � Date: �� �� �'��
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FACT SHEET FOR WASTELOAD ALLOCATION
This WLA is based on a speculative WLA done by technical support dated june 18, X91, request
# 6227. --_
Faci U will ,fzc ,d,e `uf lc C'B'j' ao -0%/6 "
Special Schedule Requirements and additional comments from Reviewers:
Fec,/ sAould be dlopP4 u 4leS5 Saar d h^* 74 t'5- A0
7`
Recommended by: Date: t- I T- 4
Reviewed by
Instream Assessment
Regional e isor:
Permits & Engineerin
Date: A 51�
Date: 9
g: V;j Date:
RETURN TO TECHNICAL SERVICES BY: S 31 .
Request # 6337
Facility Name:
Dudley Shoals Elementary Schools
NPDES No.:
NCO041157
Type of Waste:
Domestic - 100%
Facility Status:
Existing
Permit Status:
Modification
Receiving Stream:
Upper Little River
Stream Classification:
C
Subbasin:
03 -08 -32
County:
Caldwell
Stream Characteristic:
Regional Office:
Asheville Regional Office
USGS #
est 212183415
Requestor:
Mack Wiggins
Date:
1987/1984
Date of Request:
7/1/91
Drainage Area (mi2):
27.1
Topo Quad: V
D13SE
Summer 7Q10 (cfs):
5.7
Winter 7Q10 (cfs):
11.9
Average Flow (cfs):
35.2
30Q2 (cfs):
15.7
IWC ( %):
0.11
cr)
rn
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
This WLA is based on a speculative WLA done by technical support dated june 18, X91, request
# 6227. --_
Faci U will ,fzc ,d,e `uf lc C'B'j' ao -0%/6 "
Special Schedule Requirements and additional comments from Reviewers:
Fec,/ sAould be dlopP4 u 4leS5 Saar d h^* 74 t'5- A0
7`
Recommended by: Date: t- I T- 4
Reviewed by
Instream Assessment
Regional e isor:
Permits & Engineerin
Date: A 51�
Date: 9
g: V;j Date:
RETURN TO TECHNICAL SERVICES BY: S 31 .

N
CONVENTIONAL PARAMETERS
Existing Limits: UT Upper Little River
Recommended Limits: Relocation to Upper Little River
Monthly Average
Summer Winter WQ or EL
Wasteflow (MGD): 0.004 0.004
BOD5 (mg/1): 30.0 30.0 WQ
NH3N (mg/1):
DO (mg/1):
TSS (mg/1) :
Fecal Col. ( /100 ml):
pH (SU):
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
monitor monitor
1! 30.0
200.0 200.0
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification X
Relocation of discharge
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations /standards /procedures
New facility information
fpm �
Parameter(s) Affected
Fecal Col.
X 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.
•'
No parameters are water quality limited, but this discharge may affect future allocations.
Monthly Average
Summer
Winter
Wasteflow (MGD):
0.004
0.004
BOD5 (mg/1):
15.0
22.0
NH3N (mg/1):
8.0
15.0
DO (mg/1):
6.0
6.0
TSS (mg/1):
30.0
30.0
Fecal Col. ( /100 ml):
1000.0
1000.0
pH (SU):
6.0 -9.0
6.0 -9.0
Residual Chlorine (µg/1):6-
x�-�z,
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Recommended Limits: Relocation to Upper Little River
Monthly Average
Summer Winter WQ or EL
Wasteflow (MGD): 0.004 0.004
BOD5 (mg/1): 30.0 30.0 WQ
NH3N (mg/1):
DO (mg/1):
TSS (mg/1) :
Fecal Col. ( /100 ml):
pH (SU):
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
monitor monitor
1! 30.0
200.0 200.0
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification X
Relocation of discharge
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations /standards /procedures
New facility information
fpm �
Parameter(s) Affected
Fecal Col.
X 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.
•'
No parameters are water quality limited, but this discharge may affect future allocations.

3
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No /)
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Fecal levels ranged from < 5 to 970 from December 1990 to April 1991.
Inexpensive tablet chlo 'na or can be installed in conjunction wi outfall extension.
ec& l hou& e
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 it fits into basinwide plan)
Additional Information attached? N (Y or N) If yes, explain with attachments.

*M SHUFORD MILLS, INC.
$�
704 328 -2131 P.O. ORAV� ER 2228 HICKORY, N.C. 28603
CORPORATE _
December 30, 1991
Mr. Jule Shanklin
DEHNR -DEM ;
P.O. Box 27687
Raleigh, NC 27611 -7687
SUBJECT: NPDES Permit Renewal Application
Permit #NC 003 -5211
Shuford Mills, Inc. /Dudley Shoals Plant (Caldwell County)
Dear Jule:
Thank you for taking time to talk to us on the telephone on December 18
regarding subject permit. As explained, we just received from Bill Floyd
that day a copy of the public notice and the draft permit renewal. In
reviewing it we noted that effluent limitations for the first six months are
the same as now, but that after six months for the remaining life of the
permit effluent limitations have been added for fecal coliform and total
residual chlorine. We questioned the need for this as it would require the
addition of chlorination capabilities to our system plus the necessary additional
testing related to this activity.
Your return call on the 18th, after checking this out, was helpful. Since you
indicated this might be adjudicated, we accepted your guidance and discussed
this possibility with Paul White in the Asheville Regional Office on December 18.
Paul agreed to review the matter taking into account our neighbor, Dudley
Shoals Elementary School, whose permit was also up for renewal.
Paul called me back the morning of December 20, just prior to our holidays,
indicating a willingness to delete these new parameters from our final permit.
He suggested the Dudley Shoals School should be treated in the same manner
as Shuford. Apparently their permi., already issued, contains these parameters,
which probably should also be deleted. Paul had reviewed our system monitoring
reports as part of the reconsideration process.
He
suggested
we write to you, with a copy
to him, making this official request
to adjudicate
these new parameters.
In the
absence of
any public comment to
the
contrary,
we request our final
permit be
written to
reflect the removal of
the
fecal coliform and total residual
clorine
parameters.
We understand that
the
public comment period will end
January
8, 1992 and
that our renewal permit
will
be issued
shortly thereafter.
Jule, we appreciate your help and guidance as well as that of Paul White.
Thank you both very much. We will await the final permit at your convenience.
;VHL:pc
cc: Paul White
Bill Floyd
Sincerely,
•
W H . Little, Jr.

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
William W. Cobey, Jr., Secretary
August 16, 1991
Earl E. Bradshaw
PO Drawer 1590
Lenoir, NC 28645
Subject: Chlorine Toxicity
NPDES Permit No. NCO041157
Caldwell County
Dear Mr. Bradshaw:
George T. Everett, Ph.D.
Director
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 flow 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/l (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 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/l for
chronic effects or 28 ug/l for acute effects) under 7Q10 conditions. An acceptable level of
chlorine in your effluent is 28ug/l or 0.028 mg/l. Action should be taken to reduce the
effluent concentration of chlorine to an acceptable level. If this level is not feasible, you
should consider dechlorination or alternate methods of disinfection for your facility to
ensure that both chlorine and bacterial 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 obtained from
this Division prior to any alteration to your treatment plant.
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626 -0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

-2-
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
facility's with chlorine problems. If the chlorine 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 Forrest Westall of the Division's Asheville Regional Office at
(704) 251 -6208 if you have any questions or comments regarding this issue.
Sincerely,
Steve Tedder
Water Quality Section Chief
SWT /nib
cc: Asheville Regional Office
Central Files
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626 -0535 Telephone 919 - 733 -7015
An Equal Opportunity Affirmative Action Employer

Dudley Shoals Elementary School
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NCO041157 NJB 8/13/91
SUMMER
Residual Chlorine
Ammonia as NH3
7Q10 (CFS)
5.7
7Q10 CFS
5.7
DESIGN FLOW (MGD)
0.004
DESIGN FLOW (MGD)
0.004
DESIGN FLOW (CFS)
0.0062
DESIGN FLOW (CFS)
0.0062
STREAM STD (UG /L )
17.0
STREAM STD MG/L)
1.0
UPS BACKGROUND LEVEL (UG /L )
0
UPS BACKGROUND LEVEL (MG/L)
0.22
IWC ( %)
0.1086537
IWC (% )
0.108654
Allowable Concentration (u g/1)
15646.032
Allowable Concentration (mg /1)
718.0968
Allowable Concentration (m /I )
15.646032
WINTER
Ammonia as NH3
7Q10 (CFS)
11.9
DESIGN FLOW (MGD)
0.004
DESIGN FLOW (CFS)
0.0062
STREAM STD (MG /L)
1.8
UPS BACKGROUND LEVEL (MG /L)
0.22
IWC ( %)
0.052074
Allowable Concentration (m g/1)
3034.381
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NCO041157 NJB 8/13/91