HomeMy WebLinkAboutNC0029297_Wasteload Allocation_19940517NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO029297
PERMI= NAME: Catawba County Schools
FACILITY NAME: Fred T. Foard High School
Facility Status: Existing
Permit Status: Modification
Major Minor
Pipe No.: 001
Design Capacity: 0.03 MGD
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
100 %
0%
refer: Basinwide / Streamline WLA file
at front of subbasin
RECEIVING STREAM: Potts Creek
Class: WS-IV
Sub -Basin: 03-08-35
Reference USGS Quad: E 13 SE
(please attach)
County: Catawba
Regional Office: Mooresville Regional Office
Previous Exp. Date: 2/28/94 Treatment Plant Class: I
Classification changes within three miles:
Requested by:
Charles Alvarez
Prepared by. _V
Reviewed by:
Date: 12/16/93
Date: a 1L6 (9y
Date:
Modeler Date Rec. #
3MtJ I ZA `13
Drainage Area (mil) 3.61 Avg. Streamflow (cfs):
7Q10 (cfs) a.,j3 Winter 7Q10 (cfs) 1.15 30Q2 (cfs) I_ 59
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters „ P_
Upstream
Location Nz
Downstream Location vk
Summer
Monthly Average Daily Maximum
Winter
Monthly Average Daily Maximun
Wasteflow (MGD):
0.03
0.03
BOD5 (mg/1):
30
45
30
45
NH3N (mg/1):
13.4)
monitor
DO (mg/1):
monitor
monitor
Total Suspended Residue (mg/I):
30
45
30
45
Fecal Coliform (/100 ml):
200
400
200
400
pH (SU):
6-9
6-9
Residual Chlorine (µg/l):
28.0
28.0
ON & Grease (mg/1):
nr
nr
TP (mg/1):
nr
nr
TN (mg/1):
nr
nr
There shall be no discharge of floating solids or visible foam in other than trace amounts.
FACT SHEET FOR WASTELOAD ALLOCATION
Request # 7699
Facility Name:
Fred T. Foard High School -
Catawba County Schools lv.0
2
N T HEALTH
Typle of Waste:
00 %Domestic
PAL RE soURCFS
Facility Status:
Existing
Status:
PermRe
Modification
n
?AY 1994
eit
ving Stream:
otttt
Stream Classification:
WS - IV
UIVISIUN OF IN VIRQNFNTAI
Subbasin:
County:
03-08-35
Catawba
+
A'^ .? NANA6rMENr
Stream Characteristic: REGIONAL OFFI,°[
Regional Office:
Mooresville.,
USGS # USGS Map Report
Requestor:
Alvarez
Date: 1994
Date of Request:
12/20/94
Drainage Area (mi2): 3.61
Topo Quad:
E 13 S E
Summer 7Q10 (cfs): 0.73
Winter 7Q10 (cfs): 1.15
Average Flow (cfs): 4.62
30Q2 (cfs): 1.59
IWC (%): 6.0 %
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Proposed expansion due to additional flow from proposed West Catawba Middle School, to be
built in vicinity of Fred T. Foard High School.
Request Region comment on the need for instream monitoring and recommended locations.
Special Schedule Requirements and additional comments from Reviewers: RvaN M11501i a"Ocd,
'CM c T 1' rnnw kTut IHy srAovt_� 3� R� vi �ti✓ri) i�4c �c �i Y �SU 1� 6r�J �� cu( COP ��„"Lkd,
iAidTi?v�4.r� /h6.J1TOIZ'Nb Sh(r2"N &*)T /3i "00 Not rtp lrleA
uvteW-k1t MDVrt7eJ
Recommended by:
Date: u PvR,.., ?`%W
Reviewed by
Instream Assessment: Y Date:
Regional Supervisor: Date: 6
Permits & Engineering: 41.4 Date: S 2
RETURN TO TECHNICAL SUPPORT BY:
2
CONVENTIONAL PARAMETERS
Existing Limits:
Summer Winter
Monthly Average Daily Maximum Monthly Average Daily Maximum
Wasteflow (MGD):
0.02
0.02
BOD5 (mg/1):
30 45
30 45
NH3N (mg/1):
25.9
monitor
DO (mg/1):
monitor
monitor
Total Suspended Residue (mg/1):
30 45
30 45
Fecal Coliform (/100 ml):
200 400
200 400
pH (SU):
6-9
6-9
Residual Chlorine (µg/l):
monitor
monitor
Oil & Grease (mg/l):
nr
nr
TP (mg/1):
nr
nr
TN (mg/1):
nr
nr
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Recommended Limits:
Summer
Winter
Monthly Average
Daily Maximum
Monthly Average
Daily Maximum WQ
Wasteflow (MGD):
0.03
0.03
BOD5 (mg/1):
30
45
30
45 EL
NH3N(mg/1):
13.4
monitor
wQ'
DO (mg/1):
monitor
monitor
Total Suspended Residue (mg/1):
30
45
30
45
Fecal Coliform (/100 ml):
200
400
200
400
pH (SU):
6-9
6-9
Residual Chlorine (µg/1):
28.0
28.0 V2
Oil & Grease (mg/1):
nr
nr
TP (mg/1):
nr
nr
TN (mg/1):
nr
nr
There shall be no discharge of floating solids or visible foam in
other than trace amounts.
Parameter(s) affected: Limits Changes Due To:
Flow
NH3N
Residual Chlorine
Proposed Expansion
Expanded discharge, [Ammonia Toxicity]
Expanded discharge, [Chlorine Toxicity]
_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
INSTREAM MONITORING REQUIREMENTS
Upstream Location: nr
Downstream Location: nr
Parameters:
Special instream monitoring locations or monitoring frequencies:
J
MISCT I.ANEOUS 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: l
If no, why not?
I,
I
Wasteload sent to EPA? (Major) (Y or N)
(If yes, then attach updated evaluation of facility, including toxics spreadsheet, modeling analyssif
modeled at renewal, and description of how it fits into basinwide plan)
1
Additional Information attached? (Y or N) If yes, explain with attachments.
Facility Name:
Fred T Foard
Permit Number:
NCO029297
Engineer:
Alvarez
Subbasln:
03-08-35
Receiving Stream:
Pott Creek
USES quad #:
E 13 S E
Request Number:
7699
Date:
12/20/93
Expiration date:
2/28/94
High School - Catawba Co. Schools
Existing WLA checked:
x
Staff Report:
x
Topo checked:
x
USGS Flows confirmed:
x USGS map report
PIRF / APAMS:
nr
IWC Spreadsheet:
x
Stream Classification:
x WS - IV
Nutrient Sensitivity:
Instream Data:
nr
Brief of WLA Analysls
Previous VJLA's
1975: 0.010 mgd, 20 mg/I BOD5, 6 mg/1 TKN, 30 mg/1 TSS, 200 / 100 ml fecal coliform, 6 - 8.5 SU pH, 6.0 mg/I DO
1976: 0.010 mgd, 110 mg/I UOD, 30 mg/I BOD5, not required NH3-N, 30 mg/1 TSS, 200 / 100 ml fecal coliform,
6 - 8.5 SU pH, 6.0 mg/1 DO
1981: 0.010 mgd, 30 mg/I BOD5, not required NH3-N, 30 mg/I TSS, 1,000 / 100 ml fecal coliform, 6 - 8.5 SU pH,
6.0 mg/I DO
1983: 0.010 and 0.020 mgd, 30 mg/I BOD5, not required NH3-N, 30 mg/1 TSS, 1,000 / 100 ml fecal coliform,
6 - 8.5 SU pH, 5.0 mg/I DO
1988: 0.020 mgd, 30 mg/I BOD5, not required NH3-N, 30 mg/1 TSS, 1,000 / 100 ml fecal coliform, 6 - 9 SU pH,
6.0 mg/I DO plus instream monitoring required
1991: requested limits for proposed relocation to mainstem of Pott Creek, (from ut); 0.020 mgd, 30 mg/l BOD5, 25.9
mg/1 summer / winter not required NH3-N, 30 mg/I TSS, 200 / 100 ml fecal coliform, 6 - 9 SU pH, not required DO;
instream monitoring requirement dropped
Facility is proposing expansion to connect the Proposed West Catawba Middle School to their existing facility. This new
Middle School will be built on land adjacent to this existing discharge. When this was first proposed, the Region
recommended denial due a lack of information presented as to proposed loading capacities. After re-evaluation,
(especially the use of the State's 3.44 gal/day loading rate and the fact that this is a recirculating sand -filter) the Region
sent in an addendum to their Staff Report, (attached) rescinding their original recommendation. Based on previous
treatment capabilities, this facility should easily meet their recommended limits.
Basin Strategy
Blackburn Middle School, [NC0074233] is located downstream on Haas Branch, (trib to Pott Creek). The distance for
possible connection is too far, plus the fact that the hydraulic capacity of this proposed expansion is very nearly taken up.
DMR's
Well within Secondary limits. Could easily meet advanced secondary.
Chlorine levels high
No Instream monitoring available. No other pertinent information in Central Files
Model
This discharge is located in an Hydrologic Area [HA] 10 with a Mean Annual Runoff [MAR] of approximately 1.28. The
flows are fairly high for the discharge; the Instream Waste Concentration [IWC] is approximately 6%. The limits modeled
out to Secondary with a summer ammonia limit of 13.4 mg/I due to ammonia toxicity; winter ammonia will require
monitoring. Since this is a new, (expanded) discharge, a 28 µg/I Residual Chlorine limit will be applied. No other limits or
monitoring requirements, out of the norm, will be required.
MEMO
DATE:
u3o S3�
SUBJECT: ±?
TO: 3 , /
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h1, Fit
r55�P�
c - �tlP ec�s 4, h P cCB-y"'J 45At
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Ha Pi d-lb
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From:
M...„`4 North Carolina Department of Environment,
Natural Resources >
Health, and
SUMMER
30/13.4/NO DISSOLVED OXYGEN
EXPANDED FLOW TO 0.03 MGD
---------- MODEL RESULTS ----------
Discharger : FRED T FOARD H. S. CATAWBA CO SCHOOLS
Receiving Stream : POTT CREEK
----------------------------------------------------------------------
The End D.O. is 7.83 mg/l.
The End CBOD is 3.15 mg/1. =�•s= z.tlQ
The End NBOD is 2.66 mg/l .IQ-
----------------------------------------------------------------------
Segment 1
Reach 1
Reach 2
Reach 3
WLA
DO Min CBOD
(mg/1) Milepoint. Reach # (mg/1)
---------------------- ----
6.99 0.00 1
45.00
0.00
0.00
WLA
WLA
NBOD
DO
Waste Flo
(mg/1)
----
(mg/1)
--
(mgd)
---------
60.30
0.00
6.03000
0.00
0.00
0.00000
0.00
0.00
0.00000
M
*** MODEL SUMMARY DATA ***
Discharger FRED T FOARD H. S. CATAWBA CO SCHOOLS Subbasin 0308
Receiving Stream POTT CREEK Stream Class: WS
Summer 7Q10 0.73 Winter 7Q10 : 1.15
Design Temperature: 25.0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/miI fps I ft Idesignj @20 Idesignl @20 Idesignl @20 Idesignl @20 Idesignl @20 1
I I I I I I I I I I I I I I
Segment 1 1 0.481 18.001 0.143 1 0.63 1 0.35 1 0.27 1 5.17 1 4.641 0.44 1 0.30 1 0.44 1 0.00 1 0.00 1 0.00 1
Reach 1 1 1 1 1 1 1 1 1 I 1 -1 1 1
-------------------------------------------------------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 0.421 47.601 0.200 1 0.57 1 0.51 1 0.41 119.09 1 17.121 0.73 1 0.50 1 0.73 1 0.00 1 0.00.1 0.00 1
Reach 2 1 1 1 1 1 1 1 1 1 1 1 1 1
-------------------------------------------- ----------------------------------------------------------------------
I I I I I I I I I I I I I I I
Segment 1 1 0.401 50.001 0.211 1 0.58 1 0.53 1 0.42 121.22 1 19.03I 0.73 1 0.50 1 0.73-1 0.00 1 0.00 1 0.00 1
Reach 3 1 1 I 1 1 1 1 I I I I 1 1
I Flow
I CBOD
I NBOD I
D.O. 1
I cfs
I mg/1
I mg/l I
mg/l I
Segment 1
Reach 1
Waste
1 0.046
1 45.000
1 60.300 l
0.000
Headwatersl 0.730
1 2.000
1 1.000 1
7.440
Tributary
1 0.000
1 2.000
1 1.000 1
7.440
* Runoff
1 0.270
1 2.000
1 1.000 1
7.440
Segment 1
Reach 2
-
Waste
1 0.000
1 0.000
1 0.000 1
0.000
Tributary
1 0.000
1 2.000
I 1.0.00 1
7.440
* Runoff
1 0.270
1 2.0-00
I 1.000 1
7.440
Segment 1
Reach 3
Waste
1 0.000
1 0.000
1 0.000 1
0.000
Tributary
I 0.000
l 2.000
I 1.000 1
0.000
* Runoff
l 0.270
I 2.000
1 1.000 1
0.000
* Runoff flow is in cfs/mile
SUMMER
30/13.4/NO DISSOLVED OXYGEN
EXPANDED FLOW,TO 0.03 MGD
Seg #
I Reach #
I Seg Mi I
D.O. I
CBOD I
NBOD I
Flow I
1
1
0.00
6.99
4.58
4.55
0.78
1
1
0.04
7.05
4.51
4.47
0.79
1
.1
0.08
7.10
4.45
4.39
0.80
1
1
0.12
7.15
4.39
4.31
0.81
1
1
0.16
7.19
4.34
4.24
0.82
1
1
0.20
7.23
4.28
4.16
0.83
1
1
0.24
7.26
4.23
4.09
0.84
1
1
0.28
7.30
4.17
4.02
0.'85
1
1
0.32
7.33
4.12
3.95
0.86
1
1
0.36
7.36
4.07
3.89
0.87
1
1
0.40
7.38
4.02
3.82
0.88
1
1
0.44
7.41
3.97
3.76
0.90
1
1
0.48
7.43
3.93
3.70
0.91
1
2
0.48
-7.43
3.93
3.70
0.91
1
2
0.58
7.70
3.81
3.53
0.93
1
2
0.69
7.85
3.69
3.38
0.96
1
2
0.79
7.93
3.59
3.23
0.99
1
2
0.90
7.97
3.48
3.10
1.02
1
3
0.90
7.97
3.48
3.10
1.02
1
3
0.95
7.92
3.44
3.04
1.03
1
3
1.00
7.89
3.39
2.98
1.05
1
3
1.05
7.86
3.35
2.92
1.06
1
3
1.10
7.85
3.31
2.87
1.07
1
3
1.15
7.84
3.27
2.81
1.09
1
3
1.20
7.83
3.23
2.76-_
1.10
1
3
1.2.5
7..83
3.19
2.71
1.11
1
3
1.30
7.83
3.15
2.66
1.13
Seg #
I Reach #
I Seg Mi I
D.O. I
CBOD I
NBOD I
Flow
G .l M,/Q.
�
0-69 ms-le-
Sao 'reop
1 b3
"P. 10
nW2 ►.zz
DA . 5-33,,J
apt= 6.82CFg
S}0.1Dc 1•cp3c :5
W'4QI1I-6`ijr5
3007..
Fa�Q T. FOARp h1igH 5chopl
33
rW( pnxo wEs 1 G.�a,ugp
, ti
� y
DA : 3.61..1,E
�s�¢Z`v.
«Ronl_jy9i�M1`1)
�•QID: 6•43 cfs
S��Y�„�'J1,v,C,3c�.yca
} 6 FPs
J{ppE so
�PJ
jQy12: I.59 G�j
R (v ak Z036
3 P�
�pve �6.8Z— 4.6Z)�13 = 1-6rj
D9
Facility: FT Foard H.S. - Catawba Co
NPDES#: NCO029297
Redeving Stream: Pott Creek
Comment(s): proposed expansion
no applicable LFPR station in
Low Flow Record Station Number:
Hydrologic Area Number: HA10
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:
must be < 4W sq. miles
Drainage Area New Site:
3.61 sq. miles
MAR New Site:
1.3 cfs/miles squared
Qave per Report Equation:
4.62 cfs
s7Q10 per Report Equation:
0.73 cfs
w7Q10 per Report Equation:
1.15 cfs
30Q2 per Report Equation:
1.59 cfs
Continue
Drainage Area Ratio: #DIV/01
[ new DA / Da at gage ) #DIV/01
Weighted Ratio: #DIV/0!
Over -ride Inappropriate Site:
Drainage Area New Site:
3.61 miles squared
MAR
New Site:
1.3 cfs/miles squared
Weighted Qave
per Report
Equation:
#DIV/0!
Weighted s7Q10
per Report
Equation:
no input from above
Weighted w7Q10
per Report
Equation:
no input from above
Weighted 3002
per Report
Equation:
no input from above
icii
Facility:
NPDES#:
Recieving Stream: Pott Creek
Comment(s): end of model [SR 2036]
Pott Creek at 860' elevation
Low Flow Record Station Number:
Hydrologic Area Number:
Drainage Area Low Flow Record Station:
Qave Low Flow Record Station:
s7Q10 Low Flow Record Station:
w7Q10 Low Flow Record Station:
30Q2 Low Flow Record Station:
HA10
must be < 400 sq. miles
Drainage Area New Site:
5.33 sq. miles
MAR New Sfte:1
1.3 cfs/miles squared
Qave per Report Equation:
6.82 cfs
s7Q10 per Report Equation:
1.08 cfs
w7Q10 per Report Equation:
1.69 cfs
30Q2 per Report Equation:
2.35 cfs
Continue
Drainage Area Ratio: #DIV/01
[ new DA / Da at gage ] #DIV/0!
Weighted Ratio: #DIV/0!
Over -ride Inappropriate Site:
Drainage Area New Site
MAR New Site
Weighted Qave per Report Equation
Weighted s7Q10 per Report Equation
Weighted w7Q10 per Report Equation
Weighted 30Q2 per Report Equation
5.33 miles squared
1.3 cfs/miles squared
#DIV/01
no input from above
no input from above
no input from above
100% DOMESTIC FACILITIES - REC'D 6/93
RENEWING WITHOUT MODIFICATION
BY MODELER
FINAL LIST
l�
JMN
07/30/93
Request
Permit # Facility
Stream
Sub -basin County
Region
WL A7
MOD
ENG Comments
34673
TRI-COMMUNITY ELEM SCHOOL
SECOND BROAD RIVER
030802
RUTHERFORD
ARO
JMN
MW
34690
CHASE HIGH SCHOOL
GOODES CREEK
030802
RUTHERFORD
ARO
JMN
MW
58335
MESSIAH MTNS LUTHERAN CHURCH
LITTLE CRABTREE CREEK
040306
YANCEY
ARO
JMN
MW
25381
LAKE LURE WWTP, TOWN OF
BROAD RIVER
030801
RUTHERFORD
ARO
JMN
SG
75680
ROSEWOOD MHP
LINE CREEK
040302
BUNCOMBE
ARO
JMN
SR
29297
FRED T. FOARD HIGH SCHOOL
POTTS CREEK
030835
CATAWBA.
MRO
JMN
CA
74535
STEVE HALEIMARINA & RESTAURANT
CATAWBA RIVER
030832
IREDELL
MRO
X
JMN
CA Assign BPJ limits
74900
MSWS
MCCRARY CREEK
030832
IREDELL
MRO
X
JMN
CA Assign BPJ Limits
41246
WEST LINCOL 4 SENIOR HIGH SCH
INDIAN CREEK
030835
LINCOLN
MRO
JMN
CA
24279
CONOVER-SOUTHEAST WWTP #002
MCLIN CREEK
030832
CATAWBA
MRO
JMN
DB
63797
WHISPERING PINES REST HOME
SUGAR BRANCH
030804
CLEVELAND
MRO
JMN
SG
58084
GOUGH ECON, INC.
UT PAW CREEK
030834
MECKLENBURG
MRO
JMN
SR Oa
KEYS TO COMMENTS:
Oa. No policy given. Alternatives analysis should be required.
Ob. Facility must meet 5 & 1 (by date given in parenthesis).
Oc. Alternatives analysis requested.
Od. Alternatives analysis submitted.
Oe. 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.
NOTE: IF 'X' UNDER "Request WLAT' COLUMN,
THE ENGINEER SHOULD REQUEST A WASTELOAD ALLOCATION.
ALSO, FOR A 'Oa' COMMENT, GIVE CURRENT ZERO -FLOW POLICY.
FOR A 'Ob' COMMENT, GIVE 5 & 1 LIMITS BY DATE IN PARENTHESIS.