NC0066397_Wasteload Allocation_19921211

-DIVISION OF ENVIRONMENTAL MANAGEMENT ,#
MEMORANDUM
TO: Susan Robson
Mack Wiggins
THRU: Ruth Swanek 5
Carla Sanderson
FROM: Jacquelyn M. Nowell,(�a
SUBJECT: Preliminary Effluent Limits for Cleveland Co. Schools
Burns High School - NPDES # NCO066486 r
Casar Elementary School - NPDES # NCO066397 f
Fallston Elementary - NPDES # NCO066419
The Technical Support Branch has reviewed the engineering report sub-
mitted on the subject facilities. Speculative wasteload allocations for
the schools listed above were completed by Dave Goodrich in January, 1992.
The factsheets with effluent limitations for several proposed relocation
sites were routed through the Regional Office and P&E. The tentative
effluent limits recommended and corresponding flow information for each
school are as follows:
1) Burns High School @ Maple Creek Location
QW 0.0175 MGD
GODS 30 mg/1_
NH3-N monitor
TSS 30 mg/l
Fecal Coliform 200/100ml
Residual Chlorine monitor
pH 6-8 '. SU
Maple Creek Flow Information
DA = 7.80 mil
QA = 10.72 cfs
s7Q10 = 2.13 cfs'i. .
w7Q10 = 4.56 cfs
The engineering report indicates that for Burns High, a subsurface dis-,
posal system is a discharge alternative with sufficient land available.
The costs for the subsurface system were not included in.the report and it
appears this option should be given more consideration. The option of con-
nection of these schools to a municipal facility was not reviewed in this
report and its availability should be evaluated. We also recommend that
all the schools look at chlorination/dechlorination as a disinfection
method in addition to ultraviolet lamps and ozone disinfection.

Memo to Robson & Wiggins
-page 2-
2) Casar Elementary School @ Crooked Run Creek
QW 0.0066 MGD
BODS 30 mg/1
NH3-N 24 mg/1 (toxicity based)
TSS 30 mg/l
Fecal Coliform 200/100ml
Residual Chlorine monitor
pH 6-9 SU
Crooked Run Creek Flow Information
DA = 1.26 mi2
QA = 1.80 cfs
s7Q10 = 0.30 cfs
w7Q10 = 0.50 cfs
3) Fallston Elementary School @ Buffalo Creek
Qw 0.008 MGD
BODS 30 mg/l
NH3-N monitor
TSS 30 mg/1
Fecal Coliform 200/100m1
Residual Chlorine monitor•
pH 6-9 SU
Buffalo Creek Flew Information
DA =
21.2
mi2
QA =
28.4
cfs
s7Q10
= 2.8
cfs
w7Q10
= 6.6
cfs
Our comments for Casar and Fallston Elementary Schools are the same as
for Burns High. The report indicates that relocation of the discharge is
not the only option available to the schools. Technical Support recommends
that all alternatives to be reviewed fully by the Cleveland County School
system and the engineering consultants.
If there are any additional questions on these facilities, please con-
tact me.
cc: Rex Gleason
WLA Files
.. r

FACT SHEET FOR WASTELOAD ALLOCATION ID 7 3 (0 5
Request # SPEC
Facility Name:
Cleveland County Schools/Casar
Elementary S&onlaErr. or SA'ft "
NPDES No.:
NCO066397
AND
Type of Waste:
Domestic - 100%
COMMUNITY DEYl: r>uXW
Facility Status:
Existing
Permit Status:
Modification (Relocation)
FEB 1 01992
Receiving Stream:
Crooked Run Creek
Stream Classification:
C
NIISI011 if fM1OHN1114 umca q
Subbasin:
030804
rNIIESMiLLE WEE
Regional Office:
Cleveland
Mooresville WAA
Stream Charactensnc:
USGS # 02.1523.3550
Requestor:
Consulting Firm
Date: 1986
Date of Request:
12/91
Drainage Area (mi2): 1.26
Topo Quad:
F12NE
Summer 7Q10 (cfs): 0.3
Winter 7Q10 (cfs): 0.5
Average Flow (cfs): 1.8
30Q2 (cfs):
IWC (%): 3.3
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility is relocating from a zero -flow tributary to Crooked Run Creek. Speculative models were
run for a nearby location on Crooked Run Creek. The model predicts instream D.O. will be
protected at secondary treatment levels. An ammonia limit of 24 mg/1 should be given per
ammonia toxicity calculations. A letter should be sent regarding the toxicity of chlorine.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:
Reviewed by
Instream Assessment: _
Regional Supervisor:
Permits & Engineering:
RETURN TO TECHNICAL SERVICES BY:
MAR 0 4 1992

2
Existing 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):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. 000 ml):
pH (SU):
Residual Chlorine (µg/1):
Temperature (°C):
TP (mg/1):
CONVENTIONAL PARAMETERS
Monthly Average
0.0066
30.0
monitor
30.0
200.0
6-9
monitor
Monthly Average
WQ or EL
0.0066
30.0
WQ
24.0
WQ
30.0
WQ
200.0
WQ
6-9
WQ
monitor
Lin -fits Changes Due To: Parameter(s) Affected
Change in 7Q10 data
Change in stream classification
Relocation of discharge .
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures x NH3
New facility information
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.
•0
No parameters are water quality limited, but this discharge may affect future allocations.

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SUMMER
CASAR ELEM
SPEC - 1/92
SAVED AS CASARELE ON LBDATA38
---------- MODEL
RESULTS ----------
Discharger
:
CASAR ELEMENTARY
SCHOOL
Receiving Stream :
CROOKED RUN CREEK
----------------------------------------------------------------------
The End D.O.
is 8.02
mg/l.
The End CBOD
is 2.05
mg/l.
The End NBOD
----------------------------------------------------------------------
is 1.56
mg/l.
WLA WLA
WLA
DO Min
CBOD NBOD
DO Waste Flow
(mg/1)
Milepoint Reach
# (mg/1) (mg/1)
----
(mg/1) (mgd)
-- ----------
Segment 1
------
7.29
----------------
0.00 1
----
Reach 1
45.00 108.00
0.00 0.00660

SUDSIER
CASAR
ELEM SPEC - 1/92
SAVED
AS CASARELE ON LBDATA38
I Seg #
I Reach # I
Seg Mi I
D.O. (
CBOD I
NBOD
I Flow I
1
1
0.00
7.29
2.86
3.15
0.51
1
1
0.10
7.51
2.78
2.97
0.53
1
1
0.20
7.65
2.71
2.81
0.55
1
1
0.30
7.75
2.64
2.67
0.57
1
1
0.40
7.82
2.57
2.54
0.59
1
1
0.50
7.86
2.51
2.41
0.62
1
1
0.60
7.90
2.45
2.30
0.64
1
1
0.70
7.92
2.40
2.19
0.66
1
1
0.80
7.94
2.34
2.09
0.68
1
1
0.90
7.96
2.29
2.00
0.70
1
1
1.00
7.97
2.25
1.92
0.72
1
1
1.10
7.98
2.20
1.84
0.74
1
1
1.20
7.99
2.16
1.76
0.76
1
1
1.30
8.00
2.12
1.69
0.78
1
1
1.40
8.01
2.08
1.62
0.80
1
1
1.50
8.02
2.05
1.56
0.83
I Seg #
I Reach #
I Seg Mi I
D.O. I
CBOD I
NBOD
I Flow

*** MODEL SUMMARY DATA ***
Discharger : CASAR ELEMENTARY SCHOOL Subbasin : 030804
Receiving Stream : CROOKED RUN CREEK Stream Class: C
Summer 7Q10 : 0.3 Winter 7Q10 : 0.5
Design Temperature: 25.
ILENGTHI SLOPEI 'VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I
I mile I ft/mil fps I ft. Idesignl @20;6 Idesignl @20'6 Idesignl
--------------------------------------------------------------------------------
I I I I I I I I I I
Segment 1 1 1.501 33.301 0.154 1 0.54 1 0.42 1 0.34 110.31 1 9.251 0.73 1
Reach 1 1 1 1 1 1 1 1 1 1 1
--------------------------------------------------------------------------------
Flow
1 CBOD
1 NBOD 1
D.O. I
I
cfs
1 mg/1
( mg/l (
mg/1 I
Segment 1 Reach 1
Waste I
0.010
145.000
1108.000 1
0.000
Headwatersl
0.300
I 2.000
1 1.000 1
7.440
Tributary 1
0.200
1 2.000
I 1.000 1
7.440
* Runoff l
0.210
1 2.000
I 1.000 1
7.440
* Runoff flow is in cfs/mile

MODEL INPUTS
CA-SAKT-46-
acmr R"'I
LENGTH OF REACH miles
t ..,5
INCREMENTAL LENGTH miles
WASTE CHARACTERISTICS
FLOW MGD
E
CBOD m n
NBOD m /I
leg
D.O. (mg/1)---
RUNOFF CHARACTERISTICS
7Ql0 cfs/mi2
b.
QA cfs/mi2
CBOD m /1
NBOD (mg/1)/
D.O. m /I
TRIBUTARY CHARACTERISTICS
7Q10 cfs
�.
QA cfs
/•
CBOD (mg/1)?�
NBOD m /1
D.O. m /I
SLOPE f m

CASAR ELEMENTARY SCHOOL - Allowable Waste Concentrations
SUMMER
Residual Chlorine
Ammonia as NH3
7010 CFS
0.3 .x 7010 CFS
0.3
DESIGN FLOW MGD
0.0066 DESIGN FLOW MGD
0.0066
DESIGN FLOW CFS
0.01023 1K. DESIGN FLOW CFS
0.01023
STREAM STD UG/L
17.0.STREAM STD MG/L
1.0
UPS BACKGROUND LEVEL UG/L
0*1 BACKGROUND LEVEL MG/L
0.22
1 WC %
„h}•
3.29755344' ' 1 WC %
3.297553
Allowable Concentration u 1
515.53372 Allowable Concentration m /I
23.8739
k,
h
WINTER
Ammonia as NH3
xfix{fi} 7010 CFS
0.5
.
DESIGN FLOW MGD
0.0066
x{:x{ DESIGN FLOW CFS
0.01023
v{¢STREAM STD MG/L
1.8
UPS BACKGROUND LEVEL MG/L
•xr,
0.22
{ I %
2.004978
Allowable Concentration m /I
79.02385
NCO066397 DAG 01 /10/92