NC0041246_Wasteload Allocation_19950328

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0041246
PERMIIvIEE NAME: Lincoln County Schools
FACILITY NAME: West Lincoln High School
Facility Status: Existing
Permit Status: Renewal
Major
Pipe No.: 001
Minor
Design Capacity: 0.010 MGD
Domestic (% of Flow): 100 %
Industrial (% of Flow):
Comments:
RECEIVING STREAM: an unnamed tributary to Indian Creek,
Class: C
Sub -Basin: 03-08-35
Reference USGS Quad: F13NW
(please attach)
County: Lincoln
Regional Office: Mooresville Regional Office
Previous Exp. Date: 7/31/95 Treatment Plant Class: 1
Classification changes within three miles:
Requested by:
Prepared by:
Reviewed oy:
Charles Alvarez
.44
I3
Date: 2/17/95
Modeler
Date Rec.
#
�M,✓
27,7/
82--(90
Drainage Area (min ) 0, //
Avg. Streamflow (cfs): 6•/3T
7Q 10 (cfs) 0 Winter 7Q10 (cfs) 0
Toxicity Limits: IWC %
Instream Monitoring:
2n Parameters ) , %
Upstream
30Q2 (cfs) o
Acute/Chronic
LocationY _$ /t om o- •�Q
Downstream Y Location 3 00
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
3 0
NH3-N (mg/1)
yxwirT4✓
D.O. (mg/I)
(�
TSS (mg/1)
3 0
F. Col. (/100 ml)
Zo 0
pH (SU)
C,-q
liffit'*-1C`6"-
LI, Ag-)tof4wt cf-t. .-..t
--/—f-oitt.
Previous WLAs had the receiving stream Indian Creek, not a UT. This UT has been evaluated as a
zero flow stream and Division zero flow procedure must be applied. 'The facility discharges into a
stream with 7Q10/30Q24) cfs. Removal of discharge is recommended if a more environmentally
sound alternative is available at an economically reasonable cost. An engineering report evaluating
alternatives to discharge is due 180 days prior to permit expiration along with the permit renewal_ .
application. As part of the report, the cost of constructing a treatment plant at the discharge point II)
meet limits of 5 mg/1 BOD5, 1 mg/1 NH3, 6 mg/1 DO, and 17 14/1 chlorine should also be include&
if there are no feasible alternatives to a surface discharge. Upon review of the results of the
engineering report, the Division retains the right to reopen and modify this NPDES permit to
require removal of the discharge or to revise the permit limitations within a specified time
schedule."
Comments:.
rat.+ r1Q,uxt,P redid(

FACT SHEET FOR WASTELOAD ALLOCATION
Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification: C
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
West Lincoln High School
NC0041246
Domestic - 100%
Existing
Renewal
UT Indian Creek
030835
Lincoln
MRO ()�
Alvarez
2/17/95
F13NW
Request #
8260 N.C. DEPT. OF
ENVIRONMENT, HEALTH,
& NATURAL RESOURCES
MAR 20 1995
DIVISION OF ENJIROF!MENTAL MANAGEMENT
MOORESVILLE REGIONAL OFFICE
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
0.11
0.0
0.0
0.15
0.0
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Previous WLAs had the receiving stream Indian Creek, not a UT. This UT has been evaluated as a
zero flow stream and Division zero flow procedure must be applied. "The facility discharges into a
stream with 7Q10/30Q2cfs. Removal of discharge is recommended if a more environmentally
sound alternative is available at an economically reasonable cost. An engineering report evaluating
alternatives to discharge is due 180 days prior to permit expiration along with the permit renewal
application. As part of the report, the cost of constructing a treatment plant at the discharge point to
meet limits of 5 mg/1 BOD5, 1 mg/1 NH3, 6 mg/1 DO, and 17 µg/1 chlorine should also be included)
if there are no feasible alternatives to a surface discharge. Upon review of the results of the
engineering report, the Division retains the right to reopen and modify this NPDES permit to
require removal of the discharge or to revise the permit limitations within a specified time
schedule." R_ecOntntirid Nil) ih aryi ritg dby;hgy jL.L )j,� nt tt/)
Special Schedule Requirements and additional comments fromoReviewers:
Recommended by,.
Wt
Reviewed by
Instream Assessment:4/.1-1-1/L-
Regional Supervisor;_2G��
Permits & Engineering:
Date:3/13/95
Date:
Date:/Zy��!
Date: 3
RETURN TO TECHNICAL SUPPORT BY: ''y h 1 3 i"5
6

2
existing Limits:
Wasteflow (MGD):
BOD5 (mg/I):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Temperature (C):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Temperature (C):
PARAMETERS
Monthly Average
Summer Winter WQ or EL
0.010
30
monitor
nr
30
200
6-9
monitor
monitor
Monthly Average
Summer Winter
0.010
30
monitor
30
200
6-9
monitor
monitor
Toxicity Test (P/F):
r' plcr f2�•;�"�br,).
qinlaketea
ihs Due o: 1 ) Affected
Change in 7Q10 data
New regulations/standards
New procedures
New facility information
Change in stream classification
Other
At next permit renewal, NH3
Choice Option
Monthly Average
WQ or EL Summer Winter WQ or EL
0.010 0.010
EL 30 30
2 4 AT
Arin m" lc
EL 30 30
200 200
6-9 6-9
monitor monitor
monitor monitor
or
Cerio Qrtrly
u �
. fire_
@ 90%
.cy4 fie_
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.
OR
X No parameters are water quality limited, but this discharge may affect future allocations.

3
INSTREAM MONITORING REQUIREMENTS
Upstream Location: nih4t.b#2,4 Ovliccit
Downstream Location:/✓ , baiDw
Parameters: A p,) Temp. , C r, i, L'4ry1600f114
Special instream monitoring locations or momtoring frequen es:
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?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (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? (Y or N) If yes, explain with attachments.

WEST LINCOLN HIGH SCHOOL
UT INDIAN CREEK C
030835
Facility requesting renewal of existing limits.. Two discrepancies have come up
since reviewing the wasteload allocation: 1) The permit effluent page shows a fecal
coliform limit, however a limit was not recommended at the last wasteload allocation in
1988. Facility was streamlined in July 1993. A fecal coliform limit was added to the
permit between 1988 and 1993. I would assume that it was added during the streamlining
process in '93. The compliance monitoring system does not reflect the addition of the fecal
limit. Fecal monitoring is taking place but a limit is not specified on the system. A review
of the dilution ratio, 271:1, does show that a fecal coliform limit is needed. Will determine
whether the facility will have to have a grace period to meet the fecal limit.
2) The receiving stream has been reported as Indian Creek but the staff report by G>T>
Chen has it a UT Indian Creek. At the last wasteload review in 1988, per telecoih with
Allen Hardy, he reported that the school's conveyance channel was on their property, with
no other inflow of water, to Indian Creek. Therefore, the discharge was considered
directly into Indian Creek. Upon this renewal however, GT says that it is a tributary to
Indian Creek not considered to be a direct discharge. Said that it would uot take a lot to
pipe the effluent to Indian Creek, only about 1000 ft to Creek. Told him we would have to
look at the facility as probably a zero stream discharger and alternative analysis may need to
be requested. Said the he was going to inspect the site soon and would get back to me.
In 1988, Tech Support recommended the discontinuation of instream mgnitoring because
of secondary limits w/ no DO limit and no reported problems instream. ` - H.--
di/ r- ,
e7-271di CW - /7g( -
ALIT ; of/t-- /e""d
AM3

Fadlity:
NPDES#:
Receiving Stream:
Comment(s):
Low Flow Record Station Number.
Hydrologic Area Number:
Drainage Area Low Flow Record Station:
Qave Low Flow Record Station:
s7Q10 Low Flow Record Station:
w7010 Low Flow Record Station:
30Q2 Low Flow Record Station:
Drainage Area New Site:
MAR New Site:
Qave per Report Equation:
s7Q10 per Report Equation:
w7Q10 per Report Equation:
3002 per Report Equation:
Drainage Area Ratio:
[new DA/Daatgage ]
Weighted Ratio:
Over -ride inappropriate Site (y ):
West Lincoln High school
UT Indian Creek
e number not available
must be < 400 sq. miles
0.11 sq. miles
1.4 cfs/miles squared
0 cfs
0.02 cfs
0.04 cfs
0.05 cfs
Unuseable Drainage Area
#DIV/OI
#DIV/OI
#DIV/0!
Drainage Area New Site:
MAR New Site:
Weighted Qave per Report Equation:
Weighted s7Q10 per Report Equation:
Weighted w7Q10 per Report Equation:
Weighted 3002 per Report Equation:
0.11 miles squared
1.4 cfs/miles squared
#DIV/01
no input from above
no input from above
no Input from above

Facility: West Lincoln High School
NPDES#: nc0041246
Receiving Stream: Indian Creek
Comment(s):
Low Flow Record Station Number:
Hydrologic Area Number:
Drainage Area Low Flow Record Station:
Qave Low Flow Record Station:
s7010 Low Row Record Station:
w7Q10 Low Flow Record Station:
3002 Low Flow Record Station:
Drainage Area New Site:
MAR New Site:
Qave per Report Equation:
s7010 per Report Equation:
w7010 per Report Equation:
3002 per Report Equation:
Drainage Area Ratio:
[ new DA / Da at gage j
Weighted Ratio:
Over -ride Inappropriate Site (y ):
gage number not available
02.1434.4000
HA10
27.00 miles squared
35.10 cfs
6.00 cfe
11.00 cfs
13.00 cfs
must be < 400 sq. miles
19.00 sq. miles
1.4 cfs/miles squared
26cfs
4.11 cfs
6.26 cfs
8.82 cfs
Continue
0.70 :1
Continue
0.60:1
Drainage Area New Site:
MAR New Site:
Weighted Qave per Report Equation:
Weighted s7Q10 per Report Equation:
Weighted w7Q10 per Report Equation:
Weighted 3002 per Report Equation:
19.00 miles squared
1.4 cfs/miles squared
26 cfs
4.18 cfs
7.15 cfs
9.02 cfs

WEST UNCOLN HS
Residual Chlorine
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (UG/L)
IWC (%)
Allowable Concentration (ug/I)
Fecal Limit
Ratio of 271.0 :1
4.2
0.01
0.0155
17.0
0
0.37
4623.45
Ammonia as NH3
(summer)
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
Ammonia as NH3
(winter)
7010 (CFS)
200/1oom1 DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
4.2
0.01
0.0155
1.0
0.22
0.37
212.35
7.2
0.01
0.0155
1.8
0.22
0.21
735.74
NC0041246
1 2/1 3/9 4

domiLut)
7
SOC PRIORITY PROJECT: Yes No X
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Charles Alvarez
Date: December 20, 1994
NPDES STAFF REPORT AND RECOMMENDATION
County: Lincoln
Permit No. NC0041246
PART I - GENERAL INFORMATION
1. Facility and Address: West Lincoln High School
Lincoln County Schools
Post Office Box 400
Lincolnton, NC 28092
`PT C 2 7 1994
2. Date of Investigation: 12-20-94
3. Report Prepared By: G. T. Chen
4. Persons Contacted and Telephone Number: Mr. Thomas C. Seagle,
III, Lincoln County Schools Maintenance Director, 704-732-2261
5. Directions to Site: From the junction of Highway 27 and Shoal
Road (SR 1002) approximately 7.40 miles west of the City
Limits of Lincolnton, Lincoln County, travel south on SR 1002
approximately 0.1 mile. The school is located on the right
(west) side of the road.
6. Discharge Point(s). List for all discharge points:
Latitude: 35° 29' 10" Longitude: 81° 23' 42"
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map.
USGS Quad No.: F 13 NW USGS Name: Cherryville, NC
7. Site size and expansion are consistent with application?
Yes X No If No, explain:
8. Topography (relationship to flood plain included): The
topography of the wastewater treatment facility site is
relatively flat, except the area behind the sand filter whereAA
slopes off sharply. The site is not in a flood plain.

9. Location of nearest dwelling: None within 1,000 feet.
10. Receiving stream or affected surface waters: Unnamed
tributary to Indian Creek
a.
b.
c.
Classification: C
River Basin and Subbasin No.: Catawba and 03-08-35
Describe receiving stream features and pertinent
downstream uses: The receiving stream is a narrow wet
weather drainage ditch which is tributary to Indian
Creek. The ditch had a small flow at the time of the
inspection. Downstream users are unknown.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.0100 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater
treatment facility? 0.0100 MGD
c. Actual treatment capacity of the current facility
(current design capacity)? 0.0100 MGD
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: None.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: The
existing facility consists of a septic tank with dosing
compartment (single bell), flow diversion box, a surface
sand filter with three (3) PVC distribution lines, and
tablet chlorination.
f. Please provide a description of
treatment facilities: N/A.
g•
h.
Possible toxic impacts to surface
than chlorine.
Pretreatment Program (POTWs only): N/A.
in development: approved:
should be required: not needed:
2. Residuals handling and utilization/disposal scheme:
proposed wastewater
NPDES Permit Staff Report
Version 10/92
Page 2
waters: None other

a. If residuals are being land applied, please specify DEM
Permit No.:
Residuals Contractor:
Telephone No.:
b. Residuals stabilization: PSRP:
! RFRP:
Other:
c. Landfill:
d. Other disposal/utilization scheme (specify): Sludge is
removed and transported by Chaney Septic Tank Services to
the City of Lincolnton's wastewater treatment plant for
final disposal.
3. Treatment plant classification (attach completed rating
sheet): Class I, see attached rating sheet.
4. SIC Code(s): 8211
Wastewater Code(s) of actual wastewater, not particular
facilities, i.e., non -contact cooling water discharge from a
metal plating company would be 14, not 56.
Primary: 03 Secondary:
Main Treatment Unit Code: 44007
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only)?
N/A.
2. Special monitoring or limitations (including toxicity)
requests: N/A.
3. Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A.
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
4. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
NPDES Permit Staff Report
Version 10/92
Page 3

regional perspective for each option evaluated.
Spray Irrigation: Insufficient land area available for a
spray irrigation system.
Connection to Regional Sewer System: No area -wide systems
available in proximity to the school.
Subsurface: Insufficient land area available for a subsurface
disposal system.
Other Disposal Options: The existing discharge location is
approximately 1,500 feet east of Indian Creek. The Lincoln
County Schools may explore the possibilities of extending the
existing outfall to Indian Creek which has a positive 7Q10
flow.
5. Air Quality and/or Groundwater concerns or hazardous materials
utilized at this facility that may impact water quality, air
quality or groundwater? The existing facility discharges
treated domestic wasteflow only. No hazardous materials are
used at the facility. No air quality and/or groundwater
concerns.
6. Other Special Items: N/A.
PART IV - EVALUATION AND RECOMMENDATIONS
Lincoln County Schools requests its NPDES Discharge Permit
(No. NC0041246) for West Lincoln High School be renewed. An on -
site investigation performed by staff of the Mooresville Regional
Office revealed that the existing discharge is to an unnamed
tributary to Indian Creek. The tributary did not appear to have
sufficient natural flow. Therefore, a new wasteload allocation
should be developed. In the interim, Lincoln County Schools may
need to submit alternative analyses to the Division of
Environmental management for review and determination if the
existing discharge should be eliminated via extension of the
outfall or construction of a non -discharge wastewater treatment
plant.
It is recommended that the subject Permit be renewed in
consideration of the concerns noted above.
NPDES Permit Staff Report
Version 10/92
Page 4

Signaelrof Report Preparer
Water Quality Reg
Date
z //frfr
NPDES Permit Staff Report
Version 10/92
Page 5

100% DOMESTIC FACILITIES - REC'D 6/93
RENEWING WITHOUT MODIFICATION
13Y MODELER
Permit # Facility
Stream
FINAL LIST
Sub -basin County
Request
Region VYLA7 MOD ENG Comments
JMN
07/30/93
34673 TRI-COMMUNITY ELEM SCHOOL
34690 CHASE HIGH SCHOOL
58335 MESSIAH MTNS LUTHERAN CHURCH
25381 LAKE LURE WWTP, TOWN OF
75680 ROSEWOOD MHP
29297 FRED T. FOARD HIGH SCHOOL
74535 STEVE HALE/MARINA & RESTAURANT
74900 MSWS
41246 WEST LINCOLN SENIOR HIGH SCH
24279 CONOVER-SOUTHEAST WWTP #002
63797 WHISPERING PINES REST HOME
58084 GOUGH ECON, INC.
SECOND BROAD RIVER
GOODES CREEK
LITTLE CRABTREE CREEK
BROAD RIVER
LINE CREEK
POTTS CREEK
CATAWBA RIVER
MCCRARY CREEK
INDIAN CREEK
MCLIN CREEK
SUGAR BRANCH
UT PAW CREEK
KEYS TO COMMENTS:
Oa. No policy given. Alternatives analysis should be required.
0b. Facility must meet 5 & 1 (by date given in parenthesis).
0c. Alternatives analysis requested.
Od. Alternatives analysis submitted.
0e. Facility will connect to POTW.
1. Phased permit.
2. Documented instream water quality problems.
3. Facility is requesting modification.
4. WLA should be done per basinwide permitting schedule.
030802
030802
040306
030801
040302
030835
030832
030832
030835
030832
030804
030834
RUTHERFORD
RUTHERFORD
YANCEY
RUTHERFORD
BUNCOMBE
CATAWBA .
IREDELL
IREDELL
LINCOLN
CATAWBA
CLEVELAND
MECKLENBURG
ARO
ARO
ARO
ARO
ARO
MRO
MRO
MRO
MRO
MRO
MRO
MRO
JMN MW
JMN MW
JMN MW
JMN SG
JMN SR
JMN CA
X JMN CA Assign BPJ limits
X JMN CA Assign BPJ Limits
JMN CA
JMN DB
JMN SG
JMN SR Oa
NOTE: IF 'X' UNDER "Request WLA?" COLUMN,
THE ENGINEER SHOULD REQUEST A WASTELOAD ALLOCATION.
ALSO, FOR A '0a' COMMENT, GIVE CURRENT ZERO -FLOW POLICY.
FOR A 'Ob' COMMENT, GIVE 5 & 1 LIMITS BY DATE IN PARENTHESIS.