NC0036251_Wasteload Allocation_19950712

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO036251
PERMIT-I'EE NAME: Blue Star Camps, Inc.
FACILITY NAME: Camp Blue Star Summer Camp
Facility Status: Existing
Permit Status: Renewal
Major
Pipe No.: 001
Minor -1
Design Capacity: 0.04 MGD / 0.
Domestic (% of Flow):
Industrial (% of Flow):
100 %
Comments:
Renewal with requested modification to increase flow to 0.07 MGD.
RECEIVING STREAM: Mud Creek
Class: C
Sub -Basin: 04-03-02
Reference USGS Quad: G8NE (please attach)
County: Henderson
Regional Office: Asheville Regional Office
Previous Exp. Date: 9/30/95 Treatment Plant Class: II
Classification changes within three miles:
No change within three miles.
Requested by: Susan Robson
Prepared by: lei u
Reviewed
� 3 58.5 s �l w
Date: 5/11/95
Date: 7�/4P5—
Date:
Modeler
Date Rec.
I #
5W.A
kt
qS
830& k
,g)
Drainage Area (mil) 0.7 Avg. Streamflow (cfs): Z,0
7Q10 (cfs) 0.27 Winter 7Q10 (cfs) 0. VV 30Q2 (cfs) o, 66
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring: n ��
Parameters , �d Ica `�1= /
Upstream y Locatio fd lbw. d:r 0
Downstream Y Location F
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
30
g o
NH3-N (mg/1)
3
8 (,4T
D.O. (mg/1)
c,✓
n/
TSS (mg/1)
30
3D
F. Col. (/100 ml)
2 o o
z o o
pH (SU)
6-9
G - 9
�1. AIL 6 91
ZS
Zg
un
Comments:
Ile,
(� nk'4
El

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Camp Blue Star Summer Camp
NC0036251
Domestic - 100%
Existing
Renewal
Mud Creek
C
040302
Henderson
Asheville
Robson
5/11/95
GENE
Request # 8306 (A)
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
0.7
Summer 7Q10 (cfs):
0.4
Winter 7Q10 (cfs):
0.5
Average Flow (cfs):
1.8
30Q2 (cfs):
0.7
IWC (%):
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility uestin renewal of NPDES rmit with modification for expansion from 0.040 to
0.070 GD. As a isc arger to u Creek, per QUAL2E modeling analysis done for Mud Creek
and Clear Creek Area, any new or expanding dischargers to Mud Creek should have limits
equivalent to Hendersonville WWTP @ 6.0 MGD, summer/winter BOD5=10/20 mg/l,
summer/winter NH3 limits based on oxygen consuming waste =2/4 mg/l, DO = 6 mg/l, Chlorine =
28 µg/1. Z-X
Special Schedule Requirements and additional comments from Reviewers:
Recommended
Reviewed by
L
Instream Assessment:
Regional Supervisor:
Permits & Engineerin
5/l6/95
-A
0

2
Existing Limits:
Wasteflow (MGD):
BODS (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Temperature (C:
Wasteflow (MGD):
BODS (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Temperature (Co.
CONVENTIONAL PARAMETERS
Monthly Average
Summer
Winter
0.040
0.040
30
30
6
14.5
nr
nr
30
30
200
200
6-9
6-9
monitor
monitor
monitor
monitor
Monthly Average
Summer
Winter
0.040
0.040
30
30
6
14.5
nr
nr
30
30
200
200
6-9
6-9
monitor
monitor
monitor
monitor
Limits Changes Due To:
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
New facility information
WQ or EL
' 7-T-U 1
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.

r � J
3
INSTREAM MONITORING REQUIREMENTS
Upstream Location:
Downstream Location:
Parameters:
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Acguacv 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.

7UIJ-30-1995 15:39 FROM DEN WRTER GURLITY SECTION TO RRO P. 01/103
Poat-ft- Fax Noto
7671
°ateb 3.�L9f,ye,►
3
Th I Wei, t�
rlwn Flc�s�
��f
colo°ct. R o
ro J
�is,,,
Phone R
Ptmne #
F.. a
F. #
narahlt7:lrri_—
Request #
�acmcy ..w '--gypnlw am offer Camp
NPDFS No.: NCO036251
Type of Waste: Domestic - 100%
Facility Status: Existing
Permit Status: M° cT r w i° a �Exi,4 S i o r�
Rccelvmg Stearn.
Stream Classification
Mud Creek
C
Subbasin:
W302
County:
Henderson
Region�0ffice.,
Asheville
�S #
USGS flow report
r.
Robson
o
D� of Request
511 IN5
Drainage Area (mi2):
0-7
Tope Quad:
G8NE
Summer 7Q10 (cfs):
0.27
Winter 7Q10 (efs):
0.44
Average Flow (efs):
2.0
30Q2 (cfs):
0.60
IWC (%):
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc_)
These are revised Iimits.Faciiity requeking renewal of NPDES permit with modification for
expansion from 0.040 to 0.070 MGD_ Previons WLA sent 5/16M contained incorrect
limits based on the Mud Creek Management Strategy. This facility was not
included in the model area for the Mud Creek QUALZE arxi its discharge does not
interact with other dischargers included in the strategy. Recommended limits are
BOD5 = 30 mgll, summedwinter NH3 tox limits of 3 and 8, respectively, Fecal = 200, and
Chlorine = 28 ue/l.
M
Recommended by-,
Reviewed by
1 InstreAm Assessment- I i
Regional Supervisor 1
Permits & Engineering -
RETURN TO TECHNICAL SUPPORT BY.
from Reviewers:

JUq-30-1995 15:39 FROM DEM WRTER QURLITY SECTION TO
A
SUBMIM
�
Wastceflaw (Mm):
O.040
0.M
BODS (mgfl):
30
30
bWN (!n&4):
6
14.5
DO (mg/[}:
nr
nr
TSS (mgll):
30
30
1{ecal Col. (/100 ml):
200
2W
PH (SM:
6-9
6-9
RcSidual Chlorine Q*4):
mom
motor
Tempemare (C:
monitor
monitor
Recommended- IlMh&
Montblg Av=F
Summer
Winter WQ or EL
Wastcflow (MOD):
0.0 70
0.070
BODS (mg/1).-
30
30
NMN (mgA):
3
8
lO (zwfi):
nr
nr
Tss (U%A):
30
30
Fecal Cal. (/10Q mQ:
200
200
PH (SM=
Residual Chlodne W):
28
28
r Tempera= (C:
monitor
monitor
Lamit� Chances Dee moo_
ChSOge is 7Q10 data
Change in s eam claaddicatica
Rdocation of discharge
Change in wasteliow
Other (ondte togcity study, interaction, etc.)
Insimam data
New regulad mdards/pNew matkm
rocedures
Fazamter(s) am water quality 'limited. For some pArametecs, do available load capacity of
the immediate rccMiving water wiH be mod. Tins may affect futons water quality based
effluent limitations for i ddidonal diwithin this portion of the walwh
i*
No piers are wawa quality limited, but #leis discbergc may affect futtue allocations.

JUN-30-1995 15 : 39 FROM DEM WATER QUALITY SECTION TO RRO P . 03/03
RWIREAM MONMRWG REQUMEMEM
Upsftcam Ian: 100 ft upsaum of discharge
Downstream Location: StM a Road 11V
Feramr3tr Temperatwe, DQ, Fecd Coliform, Conductivity
Special insueaw vaonitodng Locations or mosritoriug fr+eque�cles:
Adequ= of Existing Treament
Has the facility ability to meet the proposed new limits with existing trot
adwes? Yes NO -
If no, which cannot be nnet?
Would a "Phasing in" of the new limits be appropriate? Yes-k- No
If yes, please provide a schedule (and basis for that schedule) Frith the iegv and
aifoe recommendations:
oftA_�1TS'
Sri
If no, why not?
Wasteload sent to EPA? N4or) (Y or l)
(If yesi then attach schematic, toxics spreadsheet; copy of mmW. or, if not modeled, then old
assompttoas that were made, and description of how it fits into basinwide Plan)
Additional Information auwlwd? (X or N) If yes, explain With atOnM
TOTPL P.03

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Camp Blue Star Summer Camp
NC0036251
Domestic - 100%
Existing
Re.V9lYwcGt i CGc m r
Mud Creek
C
040302
Henderson
Asheville
Robson
5/11/95
GENE
Request #
Wo-it61DTJ
8306 (B)
Steam Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
USGS flow report
5/95
0.7
0.27
0.44
2.0
0.60
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility requesting renewal of NPDES pqoLt with modification for expansion from 0.040 to
0.070 MGD. Asa discharger to Mud Creek, per QUAL2E modeling analysis done or u reek
anndl7 eaz Creek Area, any new or expanding dischargers to Mud Creek should have limits
equivalent to Hendersonville WWTP @ 6.0 MGD, summer/winter BOD5=10/20 mg/l,
summer/winter NH3 limits based on oxygen consuming waste =2/4 mg/l, DO = 6 mg/l, Chlorine =
28 µg/l.
Special Schedule Requirements and additional comments from Reviewers:
i
Recommended by:
Reviewed by /
Instream Assessment:
Regional Supervisor:
Permits & Engineerin
JUN 1 7 1995
RETURN TO TECHNICAL SUPPORT BY:
j

a
2
Existing Limits:
Wasteflow (MGD):
BODS (mg/1):
NH3N (mg/1):
DO (ing/1):
TSS (mg/1):
Fecal Col. (/100 ml):
PH (SU):
Residual Chlorine (µg/1):
Temperature (C:
-_ - .L ! M a- _l.1
Wasteflow (MGD):
BODS (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
PH (SU):
Residual Chlorine (µg/1):
Temperature (C:
CONVENTIONAL PARAMETERS
Monthly Average
Summer
Winter
0.040
0.040
30
30
6
14.5
nr
nr
30
30
200
200
6-9
6-9
monitor
monitor
monitor
monitor
Monthly Average
Summer
Winter
0.070
0.070
10
20
2
4
6
6
30
30
200
200
6-9
6-9
28
28
monitor
monitor
Limits Changes Due To:
Change in 7010 data
Change in stream classification
Relocation of discharge
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures
New facility information
WQ or EL
BODS, NH3, DO
(QUALM model)
Cl
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: 100 ft upstream of discharge
Downstream Location: State Road 1127
Parameters: Temperature, DO, Fecal Coliform, Conductivity
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Aftuacy 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?
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.

BLUE STAR CAMP JMN
MUD CREEK 5/16/95
040302
Facility requesting renewal of existing NPDES with a modification for expansion from
0.040 to 0.070 MGD. The facility is a summer camp with discharges recorded only from
June to October during the year. At last permit renewal in 11/91, summer and winter NH3
toxicity limits of 6 and 14.5, respectively, were chosen by the facility. A review of the self
monitoring data shows that the camp has had problems meeting the NH3, fecal and TSS
limits over the past 3 years. While swimming occurs upstream of the discharge in the lake,
it is still important that the exceedences in fecal coliform be corrected.
An engineering report was submitted to ARO and reviewed by staff. There are obviously a
lot of questions that still need to be answered concerning the options of spray irrigation and
subsurface discharge per the staff report. ARO recommends that an alternatives analysis be
completed by the facility and that DEM provide the guidance to the permittee.
As a discharger in the Mud Creek/Clear Creek area, Blue Star Camps was included in the
1992 QUAL2E modeling analysis for that system. The recommendation that all new
and expanding dischargers in the system be assigned limits of 10/2/6 would
be applicable to the Blue Star Camp expansion to 0.070 MGD. Winter
limits of 20/4/6 will also be given. Because of the proliferation of dischargers into
this area, limits equivalent to the Hendersonville WWTP @ 6 MGD will be given to new
and expanding dischargers. Existing limits for the camp @ 0.040 MGD will be
renewed.
6/28/95
Talked with Paul White of ARO, who questioned whether this facility that
is so far in the headwaters of Mud Creek should have the management
strategy applied. He felt that it was so far away from the other dischargers
that it should not be included in this strategy. I checked with Betsy
Johnson and she said that Blue Star Camp should not be subject to the
10/2/6 limits for expansion. (the model area starts @ 4th Ave. as it crosses
Mud Creek, approximately 5 miles downstream.) Some clarification may
need to make for which streams are included in the Mud Creek strategy.
Therefore, the limits of 10/2/6 were assigned @ 0.070 MGD were not
correct. Will have to determine the new limits for the 0.070 MGD flow.
MODEL RESULTS: DO Min @ milept 0.0 of 5.5 mg/l. At end of model,
DO=8.2, CBOD=6.19, NBOD = 1.98. This will probably recover to
background conditions of 2 & 1 upstream of the QUAL2E model area. Will
assign BOD5 = 30 mg/l, NH3 toxicity limits will have to be applied,
summer = 3 mg/l and winter = 8 mg/l, Fecal Coliform, and chlorine limits

MUCH WEC4
0'(,D
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s,R,
4o-.l�p'�
5
I �>, R Z
0,07oly6o
yi z �w
I.OL Mi b.3/G'S/Mi '
W7q[�:
OrC OGiS /.NI
. /(p.
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(3.27
I
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Lw

Facility:
NPDES#:
Receiving Stream: DRY BRANCH
Comment(s):
Low Flow Record Station Number.
Hydrologic Area Number:
Drainage Area Low Flow Record Station:
Qave Low Flow Record Station:
s7010 Low Flow Record Station:
w7010 Low Flow Record Station:
30Q2 Low Flow Record Station:
number not avauabie
HA10
must be < 4 0 sq. miles
Drainage Area New Site:
0.26 sq. miles
MAR New Site:
2.5 cfs/mlles squared
Qave per Report Equation:
1 cfs
s7010 per Report Equation:
0.10 cfs
w7010 per Report Equation:
0.16 cfs
3002 per Report Equation:
0.22 cfs
Unuseable Drainage Area
Drainage Area Ratio: #DIV/OI
[ new DA / Da at gage ] #DIV/0I
Weighted Ratio: #DIV/01
Over -tide Inappropriate Site (y ):
Drainage Area New Site: 0.26 miles squared
MAR New Site: 2.5 cfs/miles squared
Weighted Qave per Report Equation: #DIV/OI
Weighted 67010 per Report Equation: no input from above
Weighted w7Q10 per Report Equation: no Input from above
Weighted 30Q2 per Report Equation: no Input from above

Facility:
NPDES#:
Receiving Stream: MUD CREEK
Comment(s):
Low Flow Record Station Number.
Hydrologic Area Number.
Drainage Area Low Flow Record Station:
Gave Low Flow Record Station:
s7Q10 Low Flow Record Station:
w7010 Low Flow Record Station:
3002 Low Flow Record Station:
nurnoer not avakiatae
HA10
must be < 4W sq. miles
Drainage Area New Site:
2.00 sq. miles
MAR New Site:
2.5 cfslmiles squared
Gave per Report Equation:
5 cfs
s7Q10 per Report Equation:
0.79 cfs
w7010 per Report Equation:'
1.24 cfs
3002 per Report Equation:
1.72 cfs
Continue
Drainage Area Ratio: #DIV/01
[ new DA / Da at gage ] #DIVIOI
Weighted Ratio: #DIV/01
Over -ride inappropriate Site (y ):
Drainage Area New Site:
MAR New Site:
Weighted Gave per Report Equation:
Weighted 67010 per Report Equation:
Weighted w7010 per Report Equation:
Weighted 30Q2 per Report Equation:
2.00 miles squared
2.5 cfslmiles squared
#DIVIOI
no Input from above
no Input from above
no Input from above
6•

a P�E�-�rx 1
S l r a cal m
1 ' l a►i n S� G r•7 ._ 6 i' a �1 C F1 ._
P
0.�►,
Zo
0.�7 — 0.3`A
40
11,32
o
1.2.-7 — o,3 0.97
;?
o7/6V
o ,/ ,2 ,3
CV M
eity disc
dt st
si an
ZZyb o
0,3
D. S 7
/33.3
3S. I
2Zpo p, 30
7,1 8 c) a• 87
Z1(0 r, Z7
d;staf%C-C.

BLLIr STAR- c-lwiP
Residual Chlorine
Ammonia as NH3
(summer)
7Q10 (CFS)
0.27
7Q10 (CFS)
0.27
DESIGN FLOW (MGD)
0.07
DESIGN FLOW (MGD)
0.07
DESIGN FLOW (CFS)
0.1085
DESIGN FLOW (CFS)
0.1086
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 (°/a)
28.67
IWC (%)
28.67
Allowable Concentration (ug/1)
59.30
Allowable Concentration (mg/1)
2.94
Ammonia as NH3
(winter)
7010 (CFS)
0.44
Fecal Limit
200/100m1
DESIGN FLOW (MGD)
0.07
Ratio of 25 :1
DESIGN FLOW (CFS)
0.1086
STREAM STD (MG/L)
1.8
UPS BACKGROUND LEVEL (MG/L)
0.22
IWC (CYO)
19.78
Allowable Concentration (mg/1)
8.21
NC00364 6116 /9 5
3GAS1

.7 W Irl IYI �, I'C
p ;K
---------- MODEL RESULTS __---_----
Discharger : CAMP BLUE STAR SUMMER CAMP
Receiving Stream : MUD CREEK
----------------------------------------------------------------------
The End D.O. is 8.22 mg/1.
The End CBOD is 6.19 mg/1.
The End NBOD is 1.98 mg/1.
WLA WLA
DO Min CBOD NBOD
(mg/1 ) Mi 1 epoi nt Reach # (mg/1 ) (mg/1 )
Segment 1 5.51 0.00 1
Reach 1 45.00 13.00
Reach 2 0.00 0.00
WLA
DO Waste Flow
(mg/1) (mgd)
0.00
0.00
0.07000
0.00000

*** MUUtL !SUMMAKY UAIA ***
Discharger : CAMP BLUE STAR SUMMER CAMPSubbasin 040302
Receiving Stream : MUD CREEK Stream Class: C
Summer 7Q10 : 0.27 Winter 7Q10 : 0.44
D4sign Temperature: 23.0
ILENGTHI SLOPEI
VELOCITY I
DEPTHI Kd I Kd
I Ka I Ka I KN I KN
I KHR I KNR
I SOD I SOD I
-------------------------------------------------------------------------------------------------------------------
I mile I ft/mi l
fps I
ft Idesignl @20°
Idesignl @201 Idesignl @201
Idesignl @200
Idesignl @200 1
Segment 1
I I I
1 0.061133.001
I
0.196 1
I I
0.36 1 0.60 1 0.52
I I I I
150.20 1 47.021 0.63 1 0.50
I I
1 0.63 1 0.00
I I I
1 0.00 1 0.00 1
Reach 1
-------------------------------------------------------------------------------------------------------------------
I I I
I
I I
I I I I
I I
I
Segment 1
I I I
1 1.001 41.201
I
0.170 1
I I
0.52 1 0.43 1 0.31
I I I I
113.48 1 12.631 0.63 1 0.50
I I
1 0.63 1 0.00
I I I
1 0.00 1 0.00 1
Reach 2
-----------------------------------------------------------------------------------------------------
1 1 1
1
1 1
1 1 1 1
1 1
1
i
F1 ow
c f s
Segment 1 Reach 1
Waste 1
0.109
Headwatersl
0.270
Tributary 1
0.000
* Runoff 1
0.390
Segment 1 Reach 2
Waste 1 0.000
Tributary 1 0.100
* Runoff 1 0.390
I CBOD I
N BOD 1
D.O. i
I mg/1 I
mg/1 I
mg/1 I
1 45.000 1
13.000 1
0.000
1 2.000 1
1.000 I
7.720
1 2.000 I
1.000 1
7.720
1 2.000 1
1.000 1
7.720
1 0.000 1 0.000 1 0.000
1 2.000 1 1.000 1 7.720
I 2.000 1 1.000 1 7.720
* Runoff flow is in cfs/mi 1 e

SUMMER
0
I -Seg #
I Reach I
Seg M i I
1
1
0.00
- 1
1
0.01
- 1
1
0.02
1
1
0.03
1
1
0.04
1
1
0.05
1
1
0.06
1
2
0.06
1
2
0.16
1
2
0.26
1
2
0.36
1
2
0.46
1
2
0.56
1
2
0.66
1
2
0.76
1
2
0.86
1
2
0.96
1
2
1.06
Seg #
I Reach # I
Seg Mi
D.O.
CBOD
NBOD
Flow
5.51
14.33
4.44
0.38
5.94
14.17
4.40
0.38
6.30
14.02
4.35
0.39
6.61
13.88
4.31
0.39
6.87
13.74
4.27
0.39
7.10
13.59
4.23
0.40
7.29
13.46
4.19
0.40
7.37
11.17
3.55
0.50
7.66
10.35
3.30
0.54
7.84
9.64
3.07
0.58
7.96
9.02
2.87
0.62
8.03
8.47
2.70
0.66
8.09
7.99-
2.55'
0-.70
8.13
7.55
2.41
0.74
8.16
7.16
2.29
0.77
8.18
6.81
2.18
0.81
8.21
6.49
2.07
0.85
8.22
6.19
1.98
0.89
D.O. (
CBOD
NBOD (
Flow

SOC PRIORITY PROJECT:
IF YES, SOC NUMBER
TO: PERMITS AND ENGINEERING UNIT
WATER QUALITY SECTION
ATTENTION: Susan Robson
DATE: March 3, 1995
NPDES STAFF REPORT AND RECOMAMNDATION
COUNTY Henderson
PERMIT NUMBER NCO036251
PART I - GENERAL INFORMATION
1. Facility and Address:
No
Blue Star Camps, Inc.
3595 Sheridan Street, Suite 107
Hollywood, FL 33021
P. 0. Box 1029
Hendersonville, NC 28793
2. Date of Investigation: March 1, 1995
3. Report Prepared By: Paul R. White
4. Persons Contacted and Telephone Number: Thomas I. Rosenberg
704-692-3591
5. Directions to Site: From the intersection of Kanuga Road (SR
1127) and Main St. (Hwy 25S) in Hendersonville, go southwest
on Kanuga Road (it turns into Crab Creek Road) for 7.5 miles
to Blue Star Camp on the left. The wastewater treatment
plant and discharge point are is located below the dam of the
lake.
6. Discharge Point(s), List for all discharge points:
Latitude: 350 14, 4811 Longitude: 820 321 131,
Attach a USGS map extract and indicate treatment facility site and
discharge point on map.
U.S.G.S. Quad No. G8NE U.S.G.S. Quad Name Standingstone Mtn.
Page 1

7. Site size and expansion area consistent with application?
Yes X_ No If No, explain: The application indicates that
the expanded plant will fit on the east side of the site. There
is limited expansion area on the east side, however, the applicant
stated that there was adequate area on the south side of the
existing plant, which is consistent with the site visit.
8. Topography (relationship to flood plain included): WWTP site is
below the dam of the lake on the summer camp in the headwaters of
Mud Creek. The south side of the valley is steep, rising from el.
2200, to 36001. The existing treatment plant is elevated
sufficiently above the creek to avoid flooding. No information is
provided in the engineering report on the elevation of the
proposed facility.
9. Location of nearest dwelling: >100 feet.
10. Receiving stream or affected surface waters: Mud Creek
a. Classification: C
b. River Basin and Subbasin No.: French Broad 04-03-02
C. Describe receiving stream features and pertinent downstream
uses: Receiving stream is fed by the overflow from the lake.
Although swimming occurs in the lake, no swimming is known to
occur downstream of the lake. The receiving stream flows
through agricultural areas for the first few miles, then as
it nears Hendersonville, adjacent land uses tend more toward
commercial and golf courses. Other uses are aquatic and
wildlife propagation.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted 0.070 MGD (Ultimate
Design Capacity)
b. What is the current permitted capacity of the Wastewater
Treatment facility? 40,000 gpd
C. Actual treatment capacity of the current facility (current
design capacity 40,000 gpd
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two years:
An A/C was issued on June 10, 1994 for a 10,000 gpd flow
equalization facility. Certification of construction was
dated September 9, 1994.
Page 2

2.
3.
4.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Existing
facilities consist of a 10,000 gal. flow equalization basin;
a flow splitter; two 20,000 gpd extended aeration plants each
consisting of 4 concrete aeration basins, one blower, and one
concrete clarifier. A chlorine solution feeder, a chlorine
contact chamber of unknown volume, and a 90 degree V-notch
weir with Stevens 61R chart recorder serves both sides of the
plant.
f. Please provide a description of proposed wastewater treatment
facilities: It is proposed to replace the existing aeration
and clarifier portions of the treatment plant with a package
unit. A chlorine contact chamber is proposed. Insufficient
information was provided in the report to ascertain further
details of the proposed plant.
g. Possible toxic impacts to surface waters: chlorine, ammonia,
cleaning chemicals.
h. Pretreatment Program (POTWs only): n/a
in development approved
should be required not needed
Residuals handling and utilization/disposal scheme: septage hauler
to the City of Hendersonville.
a. If residuals are being land applied, please specify DEM
Permit Number
Residuals Contractor
Telephone Number
b. Residuals stabilization: PSRP PFRP OTHER
C . Landf ill:
d. Other disposal/utilization scheme (Specify):
Treatment plant classification (attach completed rating sheet): II
SIC Codes (s) : 7032
Primary 13 Secondary
Main Treatment Unit Code: 0607
Page 3

PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds
or are any public monies involved. (municipals only)? no
2. Special monitoring or limitations (including toxicity) requests:
none
3. Important SOC, JOC, or Compliance Schedule dates: (Please
indicate)
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 regional
perspective for each option evaluated.
Spray Irrigation: This was not evaluated in the preliminary
engineering report. Since the camp owns 625 acres, this option
should be addressed.
Connection to Regional Sewer System: not available
Subsurface: The engineering report indicates that part of the camp
has subsurface systems and that these are proposed to be taken off
and the flow added to the WWTP, but no explanation is given why.
This option should be investigated further to ascertain if part or
all of the flow can be treated with subsurface systems. Even if
only part of the flow can be treated in this manner, this will
reduce the load on the creek and result in less stringent effluent
limitations, making compliance easier.
Other disposal options:
5. Other Special Items: none
PART IV - EVALUATION AND RECOMMENDATIONS
The engineering report is inadequate to serve as an analysis
of alternatives due to lack of information on non -discharge
alternatives for part or all of the flow. In addition, the
following specific comments are made:
1. A chlorine solution feeder is utilized at the existing
plant in lieu of a tablet chlorinator as stated in the
engineering report.
Page 4

2. The plant effluent TSS concentration of 34.0 mg/1 in
September 1994 was in violation of the TSS limit in addition
to the violations listed in Table 2 of the report.
3. According to the report, about 20% of the camp is
currently served by septic tanks and subsurface systems.
These are proposed to be connected to the sewer system with
no explanation given why. If these systems are functioning
properly, it is recommended that they be left as is. Also,
the condition of these existing systems should be used to
indicate if additional subsurface systems may be constructed.
4. The aeration volume presented as necessary for complete
nitrification does not apply to single stage systems where
nitrification must take place in addition to carbonaceous BOD
removal in a single aeration basin. At least 24 hours
detention is needed in order to meet NH3-N limits in a single
stage system. Therefore Alternative A is not acceptable
since it would not provide sufficient hydraulic detention
time.
5. The middle paragraph on page 5 seems to confuse
nitrification with denitrification, which is not an issue.
6. The chlorine residual of 31.1 mg/1 which is proposed is
excessive.
7. Alternative A refers to an existing tablet chlorinator.
A chlorine solution feeder is currently used for
disinfection.
8. Alternative B should more completely describe the
proposed additions, such as the type and capacity of
treatment plant and how it is to be used in conjunction with
existing treatment. This option will result in three
separate treatment trains, the proposed addition being of a
different configuration than the other two. This situation
should be avoided if at all possible due to the difficulties
of operation.
9. Does liquid chlorine disinfection refer to utilization of
a chlorine solution of hypochlorite or to gaseous chlorine?
It is recommended that gaseous chlorine be avoided. Options
other than sulfur dioxide should also be considered for
dechlorination due to the initial expense and level of
operational skill involved with a gas feeder. It should be
pointed out that chlorine is not currently limited, it is
only required to be monitored.
Page 5

10. Diagram 2 appears to have been left out. The shop
drawing of the treatment plant on the last page of the report
is unreadable and is not labeled as to what it is proposed
for. It appears to be a contact stabilization type unit,
which is not appropriate for this installation.
11. In the estimated cost projections, the items for which
costs are listed should be more fully described, such as type
and capacity of equipment. It appears that capital
expenditures for additional items should be addressed, such
as site work, chlorination, yard piping, flow splitter,
sludge holding, blowers, electrical supply and controls, and
auxiliary power. If some of this is included in the lump sum
price for the treatment plant, this should be stated.
12. Alternative D addresses limiting flows, but only from
the aspect of limiting campers. The NPDES Permit limits
flows at the treatment plant rather than the number of
campers. Projected flows of 60 gallons per person per day is
used in the absence of data and may be unrealistic. Since
construction of expanded facilities will not be done until
after the summer season, flows should be carefully measured
at the treatment plant as well as on the water supply. At
minimum, flow meters should be installed on the wells. Other
locations should be considered for metering with the
objective of isolating and reducing excessive flows,
regardless of the type of waste treatment to be provided.
This data should be considered in the final design of any
additional treatment capacity. Variations in the measured
flow should also be considered in evaluating the adequacy of
existing flow equalization.
13. Alternative E only considers the utilization of
subsurface treatment for the total flow. This option should
be considered in lieu of expansion of the discharging system
as well. Utilization of this option would not prevent the
continued use of hiking trails and many other non-structural
uses in the same area. Simply stating lack of land area and
negative impact on camp operations, when there are 625 acres
involved, is insufficient to negate this option.
Conventional as well as low pressure pipe type systems should
be further investigated for some or all of the flow utilizing
soils and other information.
14. A sand filter should be considered as an alternative to
mechanical treatment, due to the difficulty in operating this
type of treatment successfully on a short term basis.
Restrictive ammonia limits, which are related to higher
flows, may render a sand filter undesirable.
Page 6

15. The analysis of alternatives must include a present
worth analysis including operational and maintenance
expenses.
16. In the second paragraph under the conclusions,
"nitrogen" should be "ammonia -nitrogen".
17. The basis for the necessary oxygen requirement
calculated should be provided. The existing aerators should
be evaluated for adequacy. Upon expansion, the NH3-N limit
will likely be lowered. The existing plant should be
evaluated for the ability to meet more stringent limits.
18. The proposed method of sludge wasting is not adequate.
Mean cell residence time will be very critical in maintaining
proper conditions for nitrification. Sludge holding
facilities will allow incremental wasting and maintenance of
the optimum MLSS concentration.
It is recommended that an alternatives analysis be completed
to determine if part or all of the flow can be disposed of on
site, avoiding the need to expand the permit flow limit. The
guidance for an alternatives analysis should be submitted to the
applicant along with a request for this information.
Signature of Report Preparer
later.OQuality Regional Supervisor
Dat
Page 7

- RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: OL U 6
Owner or Contact Person:
Mailing Address: _3S9'S Sf/C-Ri,499 STy STD /07 i/yLcYaoo.)� cz- T - 0'/
County: 1 �� vDF125 uN Telephone:_ -10 S- ?63 - W4
Present Classification: it New Facility Existing Facility
NPDES Per. No. NCOOS6ZSj Nondisc. Per. No.WO Health Dept.Per No.
Rated by: 124y(- WIN-6 Telephone: --;V4f-25/-6Ao Date:. -�Z7-95
Reviewed by: Health Dept. Telephone:
/--�Tr,t. %i Regional Office Telephone: zau-25i-6to.T
Central Office Telephone:
ORC: Tf lC-5 Grade: .; _Telephone:70Y-254-5/69
Check Classification(s): Subsurface Spray Irrigation Land Application
Wastewater Classification: (Circle One) 1 III IV Total Points: r o
SUBSURFACE CLASSIFICATION
(check all units that apply)
i. septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4. sand filters
5. grease trap/interceptor
6-oil/water separators
7. gravity subsurface treatment and disposal:
8. pressure subsurface treatment and disposal:
SPRAY IRRIGATION CLASSIFICATION
(check all units that apply)
1.
preliminary treatment (definition no. 32 )
2.
lagoons
3.
septic tanks
4.
pump tanks
5.
pumps
6
sand filters
7.
grease trap/interceptor
8.
oil/water separators
9
disinfection
10.
chemical addition for nutrient/algae control
11.
spray irrigation of wastewater
In addition to the above classifications, pretreatment of wastewater In excess of these components shell
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to perk holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
WASTEWATER TREATMENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class I classification. Unless the flow is of a significant quantity or the technology is unusually
complex, to require consideration by the Commission on a case -by -case basis: (Check it Appropriate)
1. Oil/water Separator Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Fitter Systems consisting only of septic tanks, dosing apparatus, pumps,sand fitters, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed -loop Recycle Systems;
5. Groundwater Remediatfon Systems consisting only of oilfwater separators, pumps, air -stripping, carbon adsorption, disinfection
and disposal;
6. Aquacuhure operations with discharge to surface waters;
7. Waler Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
9. Single-family discharging systems, with the exception of Aerobic Treatment Units, will be classified if permitted after July 1,
1993 or it upon Inspection by the Division, it is found that the system Is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassification by the Commission, in writing.

Viet following scale is used for rating wastewater treatment facilities: (circle appropriate points)
REM POINTS
(1)
Industrial Pretreatment Units or Industrial Pretreatment Program (see definition No. 33)................. ................................4
(2)
DESIGN
FLOW OF PLANT IN gpd [rot applicable to non -contaminated cooling waters, sludge handling facilities for
water purification plants, totally closed cycle systems(we definition No. 11), and facilities consisting only of item
(4)(d) or Items (4)(d) and (I 1)(d)I
0 - 20.000................................................................................................................................................1
20.001 - 50.000......................................................................................................................................2
50.001 - 100.000..................................................................................................................................
100,001 - 250.000...................................................................................................................................
250,001 - 500.000..................................................................................................................................6
500.001 - 1.000.000...............................................................................................................................E
1,000.001 - 2.000.000...........................................................................................................................10
2.000,001 (arid up) rate 1 point additional for each 200.000 gpd capacity up 10 a maximum of ...... ..........
30
Design Flaw (gpd)
(3)
PRELIMINARY UNITSIPROCESSES(see definition No.32)
(a)
Bar Screens............................................................................................................................................
(b)
or
Mechanical Screens, Static Screens or Comminuting Devices..........................................................................2
(c)
Grit Removal..............................................................................................................................................I
(d)
or
Mechanical or Aerated Grit Removal.............................................................................................................2
(a)
Flow Measuring Device ................................................................................................................................I
or
(1)
Instrumented Flow Measurement............................................................................................................
.2
.
Preaerallon.............................................................................................................................................
(h)
Influent Flow Equalization.......................................................................................................................
.2
(1)
Grease or Oil Separators - Gravity.................................................................................................................2
Mechanical................................................................................................................................................3
Dissolved Air Rotation ...............................................................................................................................E
(I)
Prechlorination..........._............................................................................................................................5
(4)
PRWRVTREATMBdT UNTI-SPROCESSES
(a)
Septic Tank (see definition No. 43)............................................ _.............................................................
.2
(b)
Imhoff Tank.............................................................................................................................................5
(c)
Primary Clarifiers ..........................................................................................................................................6
(d)
Settling Ponds or Settling Tanks for Inorganic Non -toxic Materials (sludge handling facilities far water
purification plants, sand, gravel, atom. and other mining operations except recreational activities such as gem
........................................................................................
or gold mining) ...................................... ..........2
(5)
SECONDARYTREATMENT LNnWFIOCESSES
(a)
Carbonacoous Stage
(I) Aerallon-High Purity Oxygen System...........................................................................
DiffusedAir System...................................................................................................
..10
Mechanical Air System (fixed, floating or rolor)...... ............................................ ... _........
SeparateSludge Reaeration............................................................................................3
(II) Trickling Filler
HighRate.......................................................................................................................7
StandardRate................................................................................................................6
PackedTower................................................................................................................5
(III) Biological Aerated Fitter or Aerated Biological Flher__... _...................................................10
(IV) Aerated Lagoons..........................................................................................................10
(v) .Rotating Biological Contactors......................................................................................10
(VI) Sand Filters -Intermittent biological ....................... _.........................................................
2
Recirculating biological....................................................................................................3
(vll) Stabilization Lagoons.................................................................................................
(v01) Clarifier.......................................................................................................................
.5
(Ix) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal
by
nhmloation (see definition No. 12)(Points for this hem have to be In addition to hems
(5)(a)(I) through (5)(a)(viii),
utilizing the extended aeration process (see definition No3a)........................................2
utilizing other than the extended aeration process ...... _....................................................
(x) Nutrient additions to enhance BOD removal......................................................................5
(XI) Biological Culture ('Super Sugs')addhion........................................................................5
(b)
Nitrogenous Stage
(1) Aeration - High Purhy Oxygen System ............ .............................................. _..............20
DiffusedAir System.......................................................................................................10
Mechanical Air System (fixed, floating or rotor) .......... ......................................_..............
Separate Sludge Reaemtion............................................................................................3
(II) Trickling Filler -High Rate...................................................................................................7
StandardRate...............................................................................................................5
PackedTower................................................................................................................5
(III) Biological Aerated Filter or Aerated Biological Rker...... __...................................................10
(Iv) Rotating Biological Comactors ......................................................................................10
(v) Sand Filter - Intermittent biological ..................................................................................2
Recirculating biological....................................................................................................3
(vl) ClaNer..........................................................................................................................5
(6)
TERTIARY ORADVANCEDTREATMENT LN1TSPROCESSES
(a)
Activated Carbon Beds -
withoul carbon regeneration..................................... ............................................. _...............
with carbon regeneration .......................................... _...........................................................
i 5
(b)
Powdered or Granular Activated Carbon Feed
without carbon regeneration................................................................................................5
with carbon regeneration.....................................................................................................15
(c)
Air stripping..............................................................................__...........................................................5
10
(d)
Denhrilication Process .................................. ................................ ...........................................................
(a)
Electrodialysls......................................................................................_....................................................5
(I)
Foam Separation......................................................................................................................................5
5
(9)
Ion Exchange... ............................................................................................................ .............................
(h)
Lard Application of Treated Ellluent (see definition No. 22b) (not applicable for sand. gravel, stone
and other similar mining operations) by high rate Infiltration ........... ......................................... .... ..............
4
(Ij
Microscreens.........................................................................................................................Xi
Phosphorous Removal by Biological Processes (See de0nitlon No. 26)........................................................20
(k)
Polishing Ponds - without aeration............................................................................................................2
withaeration.................................................................................................................5

'
(I)
Post Aeration - cascade___ .............. ................... ....._...._..... ..... ._._....__........... ..__-_................._......_....0
-
diffused or mechanical.... .... .......... .. ....... ... ..... ....
. ..... _2
(m)
Reverse Osmosis ... .......... _.................... ...................... .....__............... ...........____............ ........ ......
........... 5
-
(n)
Sand or Mixed -Media Fillers - low rate ...... .................. ......._......................... _._..__............. ...
... _.2
highrale._...................._..._._...........................__.._..5
(o)
Treatment processes for removal of metal or cyanide .............................. .............._..-.._......................_......
15
(p)
treatment processes for removal of toxic materials other than metal or cyanide._...._._.._ ..............................
is
(7)
SLUDGETRFATMENT
(a)
Sludge Digestion Tank - Heated (anaerobic)........................................................ .............. ..... ......... ...........
10
Aerobic..............................................................................................................................................5
Unhealed(anaerobic)..........................................................................................................
3
(b)
Sludge Stabilization (chemical or thermal)...................................................................................................5
(c)
Sludge Drying Beds - Gravity......................................................................................................................2
VacuumAssisted......................................................................................................................................5
Id)
Sludge Elutriation.....................................................................................................................................5
(a)
Sludge Conditioner (chemical or thermal)....................................................................................................5
(1)
Sludge Thickener (gravity).........................................................................................................................
(g)
Dissolved Air Flotation Unit (not applicable to a unit rated as(3)(1))...................................... -......................
8
(h)
Sludge Gas Utilization (including gas storage) .................. _.........................................................................
2
(1)
Sludge Holding Tank - Aerated...................................................................................................................5
Non -aerated. ............................................................................................................................................
2
())
Sludge Incinerator (not Including activated carbon regeneration)................................................................10
(k)
Vacuum Filter, Centrifuge. or Filler Press or other similar dewatering devices..................................................10
(8)
RESIDUALS
UTILRATIONIDISPOSAL [including incinerated ash)
(a)
Lagoons..................................................................................................................................................2
(b)
Land Application (surface and subsurface) (see definilon 22a)
by contracting to a land application operator or landfill operator who holds the land application permit
orlandfill permit.....................................................................................................................................�
(c)
Dedicated Landfill(burial) by the permittee of the wastewater Treatment facility ...............................................
(9)
DISINFECTION
(a)
Chlorination..........................................................................................................................................
.
(b)
Dechlorination.........................................................................................................................................
(c)
Ozone......................................................................................................................................................5
(d)
Radiation.............................................................................................................................................5
(10)
HEMI
CHEMICAL
L(ADD ADDITIONSYSTEM(S)definition [notto chemical additions rated as hem (3)(1).
S) see
points
j
[7)(b). (9(9)(b) each:le
List......................................................................................................................................5
S
......................................................................................................................................
......................................................................................................................................5
......................................................................................................................................
5
(11)
MISCELLANEOUS UNITSIPROCESSES
(a)
Holding Ponds, Holding Tanks or Settling Ponds for Organic a Toxic Materials Including wastes from mining
operations containing nitrogen or phosphorus compounds in amounts significantly greater than Is common
fordomestic wastewater............................................................................................................................4
(b)
Effluent Flow Equalization (rot applicable to storage basins which are Inherent In lard application Systems).....2
(c)
Stage Discharge (not applicable to storage basins Inherent in land application system) ....... _.............
(d)
Pumps..................................................................................................................................................
..3T
(a)
Stand -By Power Supply...........................................................................................................................
(f)
Thermal Pollution Control Device...............................................................................................................3
A
TOTALPOINTS ....... _............................................_...................
ClassI........................................................................................................... 5.25 Points
Class11......................................................................................................... 26-50 Points
ClassIN........................................................................................................ 51.65 Points
ClassN....................................................................................................... 66-Up Points
Facilities having a rating of one through four points, Inclusive, do not require a carlifled operator.
Facilities having an activated sludge process will be assigned a minimum classification of Class 11.
Facllilles having treatment processes for the removal of metal or cyanide will be assigned a minimum classulcalion of Class II.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class III.
.0004 DEFINITIONS
The following definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physlcal/chemlcal method for reducing soluble organic material from wastewater effluent; The column -type beds used In this
method will have a flow rate varying from two to eight gallons per minute per square foot and may be either upllow or downffow, carbon beds. Carbon may or
may not be regenerated on the wastewater Treatment plant she;
(2) Aerated Lagoons. A basin In which all solids are maintained In suspension and by which biological oxidation or organic matter is reduced through artificially
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bringing about Intimate contact between air or high purify oxygen In a liquid by spraying, agitation or dlffusion;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 15 hours.
(4) Agriculturally managed she. Any she on which a crop Is produced, managed, and harvested (Crop Includes grasses, grains, tress, eio.);
(5) Air Stripping. A process by which the ammonium Ion Is first convened to dissolved ammonia (pH adjustment) with the amnonla then released to the
atmosphere by physical means; or other similar processes which remove petroleum products such as benzene, toluene, and xylem;
(6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize the
absorbed Impurities;
(7) Carbonaceous Stage. A singe of wastewater treatment designed to achleve'secondary' effluent limits;
(8) Centrifuge. A mechanical device In which whirl ugal force Is used to separate solids from liquids or to separate liquids of different densh'as;
(9) Chemical Addhlon Systems- The addition of chemicals) to wastewater at an application point for purposes of Improving scuds removal, pH adjustment.
alkalinity control, etc.; the capability to experiment with different chemicals and different application points to achieve a specific result will be considered one
system; the capability to add chemical(s) to dual units will be rated as one system; capability to add a chemical at a different application points for different
purposes will result In the systems being rated as separate systems;
(10) Chemical Sludge Condfflonng. The addition of a chemical compound such as lime. ferric chloride, or a polymer to wet sludge To coalesce the mass Prior To
Us application to a dewaterirg device;
(11) Closed Cycle Systems. Use of holding ponds or holding tanks for containment of wastewater containing Inorganic, non -toxic materials from sand, graver,
cashed stone or other similar operations. Such systems shall carry a maximum of two points reganllesa of pumping facilities or any other appurtenances;
(12) Combined Removal of Carbonaceous 500 and Nitrogenous Removal by Nhnticatlon- A single stage system required to achieve penny effluent limas on BOD
antl ammonia nitrogen within the same biological reactor,
(13) Dechiorinatlon. The partial or complete reduction of residual chlorine In a liquid by any chemical or physical process;