NC0086223_Authorization To Construct_20010226 (2)

M
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Kerr T. Stevens, Director
Mr. Dale Owen
Route 2, Box 397
Brevard, North Carolina 28712
Dear Mr. Owen:
tir• 1
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NAruRAL RESOURCES
February 26, 2001
Subject: Authorization to Construct Permit Issuance
ATC Number 086223 ACA
D&D Catfish Resort WWTP
NPDES Permit NCO086223
Transylvania County
A letter of request for an Authorization to Construct (ATC) was received March 13, 2000 (with
additional information submitted January 26, 2001). by the Division and final plans and specifications
for this project have been reviewed and found to be satisfactory. Authorization is hereby granted for
the addition of a wastewater treatment plant at D&D Catfish Resort not to exceed a design flow of
0.020 MGD with discharge into Peter Weaver Creek in the French Broad River Basin. Specifically, this
ATC allows the installation of:
• Splitter box to split flows between dual path facilities,
Appx. 10,000 gallon total equalization with diffused air and 1 /3 hP submersible pumps,
• 20,000 gallon dual aeration basins with diffused air,
. 4 hopper -type clarifiers (2 per dual train) at appx. 35 ft2 each, with air lift sludge returns and
skimmer boxes,
Appx. 10,000 gallon total digester capacity with diffused air,
422 gallon dual chlorine contact chambers with tablet chlorination,
• dual tablet dechlorination,
• meter box with effluent ultrasonic flow meter,
dual blowers rated at 160 cfm`,
• standby power*,
• all additional piping, valves, control equipment and appurtenances.
" NOTE: Plans and specification must be revised to reflect dual blowers rated at 160 cfm.
Additionally, standby power with enough capacity to operate main treatment units in case of power
outage must be supplied prior to operation of this treatment facility. The wastewater treatment plant
area must be fenced to restrict public access and a potable water source must be supplied for
maintenance and sampling purposes
1617 MAR SERVICE CENTER, RAtocN, NORTH CAROLINA 27699-1617 - TELEPHONE [phone]/FAX [phone]
AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/ 10% POST -CONSUMER PAPER
VISIT US ON THE WED AT http://h2o.enr.state.nc.us/NPDES

C f
Mr. Dale Owen
Page 2 of 4
Once construction under this ATC has been completed and an Engineer's Certificate has been
submitted (and the appropriate regional office notified), the permittee is authorized to operate the
treatment units.
This Authorization to Construct is issued in accordance with NPDES Permit No. NCO086223
issued November 3, 2000, and shall be subject to revocation unless the wastewater treatment facilities
are constructed in accordance with the conditions and limitations specified in the permit.
The sludge generated from these treatment facilities must be disposed of in accordance with
G.S. 143-215.1 and in a manner approved by the North Carolina Division of Water Quality.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be required by
this Division, such as the construction of additional or replacement wastewater treatment or disposal
facilities.
The Asheville Regional Office, telephone number [phone], shall be notified at least forty-
eight (48) hours in advance of operation of the installed facilities so that an in -place inspection can be
made. Such notification to the regional supervisor shall be made during the normal office hours from
8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
Upon classification of the facility by the Certification Commission, the Permittee shall employ a
certified water pollution control treatment system operator to be in responsible charge (ORC) of the
water pollution control treatment system. The operator must hold a certificate of the type and grade at
least equivalent to or greater than the classification assigned to the water pollution control treatment
system by the Certification Commission. The Permittee must also employ a certified back-up operator
of the appropriate type and grade to comply with the conditions of Title 15A, Chapter 8G, .0202. The
ORC of the facility must visit each Class I facility at least weekly and each Class 1I, III, and IV facility
at least daily, excluding weekends and holidays, and must properly manage and document daily .
operation and maintenance of the facility and must comply with all other, conditions outlined in Title
15A, Chapter 8G, .0204. Once the -facility is classified, the Permittee' must submit a letter to the
Certification Commission which designates the operator in responsible charge within: (A) Sixty
calendar days prior to wastewater being introduced into a new system or (B) within 120 calendar days
of the following, (i) after receiving notification of a change in the classification of the system requiring
the designation of a new ORC and back-up ORC or (ii) a vacancy in the position of ORC or back-up
ORC.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for
the life of the facility.
The Operational Agreement between the Permittee and the Environmental Management
Commission is incorporated herein by reference and is a condition of this Permit. Noncompliance with
the terms of the Operational Agreement shall subject the Permittee to all sanctions provided by G. S.
143-215.6 for violation of or failure to act in accordance with the terms and conditions of this Permit.
Failure to abide by the requirements contained in this Authorization to Construct may subject
the Permittee to an enforcement action by the Division of Water Quality in accordance with North
Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from complying
with any and all statutes, rules, regulations, or ordinances which may be imposed by other
government agencies (local, state, and federal) which have jurisdiction.
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a professional engineer certifying that the permitted facility has been installed
in accordance with the NPDES Permit, this Authorization to Construct and the approved plans and
specifications. Mail the Certification to the NPDES Unit, Division of Water Quality, 1617 Mail Service
Center, Raleigh, NC 27699-1617.

Mr. Dale Owen
Page 3 of 4
One (1) set of approved plans and specifications is being forwarded to you. If you have any
questions or need additional information, please contact Ms. Susan A, Wilson, telephone number (919)
733-5083, extension 510.
Sincerely,
�eT. Stevens
cc: Central Files
NPDES Unit, Permit File
Asheville Regional Office, Water Quality, Kerry Becker
Technical Assistance and Certification, Tony Arnold
Robert G. Burgin, Jr., P.E. P.O. Box 1804
Irmo, SC 29063

• • of WA rFR
�02 QG
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> .�
o -�
Michael F. Easley
Governor
NCDENR William G. Ross, Secretary
North Carolina Department of Environment and Natural Resources
Kerr T. Stevens, Director
Division of Water Quality
Water Quality Section/ NPDES Unit
FAX: [phone]
2/27/01
FAX TO: Robert Burgin, P.E,
Re.: D&D Resort WWTP
FROM: Susan A. Wilson
PHONE: [phone], ext. 510
_NO. OF PAGES INCLUDING THIS SHEET: 4
FAX NUMBER: Ann,/761 —
Here's a copy of the signed ATC. Let me know if you have (or the owner) have any questions about the
requirements.
Susan

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Division of Water Quality
MEMO F Date:
To: , Subject:
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NCDENR
North Carolina Department of Environment and Natural Resources
PO Box 29535, Raleigh, North Carolina 27626-0535 / Phone: [phone]
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10 000 4PD
W o� t—!7 H ff4 k--, To M, oat PY KK �--1& I j
Area and Volume Calculation of Aeration Basin Phase One
S e: 00
8189'l'
I
Volume and Area Calculation
Area := (8.18.11.83) + (0.47.11.83) + (0.97.11.83) — (0.47.0.94) — (0.97.0.3455)
Area=113.028 sq. ft. ? L,
Length -of -aeration :=12 feet
Volume cuft :=Area •Length_of aeration
Volume cuft=1356.332 cu. ft.
Volume —gallons := Volume cuft •7.481
Volume gallons=10146.72 gallons
Length —of —equalization := 6 feet
Volume EQ_cuft := Area •Length_of equalization
Volume_EQ_cuft = 678.166
Volume EQ_gallons := Volume EQ_cuft•7.481
Volume_EQ_gallons = 5073.36 gallons.
Length —of —digester := 6.5 feet
Volume digester_cuft := Area•Length_of digester

Volume digester cuft = 734.68 cu. ft.
Volume digester gallons Volume digester tuft •7.481
Volume digester gallons = 5496.14 gallons.

Aeration Calculations Phase One
Equalization_ Aeration_ cfm :=1.25 •(�5073.36- ) •2
Equalization_ Aeration cfm=12.683 CFM
734.68'
Digester—Aeration—CFM := 30 • � �T �.2
'91-
Digester Aeration—CFM = 44.081 CFM
Pressure from depth of water in aeation tank = dp
8
dp ' feet
dp = 3.463 psi Pressure from depth of water in aeation tank
Requirement 2050 cu. ft. of aeration per Ibs of BOD5
Population at build out = 200 people. BOD5 per person per day estimated = 0.23 Ibs
BODIbs := 200.0.23
BODIbs = 46 Ibs BOD5
Ammonia in raw influent = 25 mg/l
NHlbs := 25.8.P1.0.020 --;�
NHlbs = 4.27 Ibs per day
NOD := NHlbs •4.6
NOD=19.642 Ibs per day of nitrogen oxygen demand o
Therefore calculate the cubic feet per minute of aeration required for the combined NOD
and BOD5 oxygen demand
CFMaeration := ( NOD + BODIbs) •(2050)
1440
CFMaeration = 93.449 cfm
Digester-Aeration-CFM = 44.081 cfm
CFMtotal := CFMaeration + Digester Aeratibn_CFM + Equalization—Aeration—cfm
CFMtotal=150.213 cfm
Note: Use 2 blowers at approximately 160 cfm each
Note: 12 diffusser in extended aeration tank
DIFFUSERflowaeration := CFMaeration
1

DIFFUSERflowaeration = 7.787 CFM
DIFFheadloss := 0.50 psi Note: Using Davco D2 diffuser
DIFFUSER_drop_flowrate := 2 •DIFFUSERflowaeration
DIFFUSER drop_flowrate=15.575 CFM
Note each diffuser drop is 1.5" galy. steel
Note equvalent length of drop pipe =13.00 feet of 1.5 inch pipe
DIFFUSER_drop_headloss :=0.05.0.13 PSI
DIFFUSER drop_headloss = 0.007 PSI
DISTRIBUTER headloss 3inch 150cfm 30feet :=0.30•.35 PSI
DISTRIBUTER headloss 3inch 150cfm 30feet = 0.105 PSI
BLOWER headloss total : = 0.5 + 0.007 + 0.105 + 3.463
BLOWER headloss total = 4.075 PSI

D&D Catfish Resort WWTP Calculations
Plant to be designed Dual Path G
F( ��",,i5 (o � S
Flow to be equalized through plant to displace peaks
Aeration Volume=18,730 x 2 = 37,460 Gallons pTry
Aeration Volume in cu ft = 37,460 Gallons + 7.481= 5,000.35 cu ft
oppjd�
Clarifier Volume = 4864 x 2 = 9,728 Gallons
Daily person capacity of plant @ 100 gallons / person / day = 37460 gallons =100 gallons /
person / day = 374.60 people
Daily BOD5 capacity of plant @ 0.17 gallons / person / day = 374.60 x 0.17 = 63.68 lbs. BOD5
per day
Hourly BOD5 capacity of plant @ 0.17 gallons / person / day = 63.68 lbs. BOD5 per day = 24 =
2.65 lbs. BOD5 per hour
Aeration requirement per day extended aeration process = 63.68 lbs. BOD5 per day x 2050 Cu. Ft
per lbs. of BOD5=130,544 cu. ft. per day = 90.65 cfm for both tanks
Aeration requirement per day_extended aeration process for mixing = (5,000.35 cu ft . 1000 cu.
ft.) x 30cfm / 1000 cu ft = 150 cfm
Air requirement per diffuser =150= 24 = 6.25 cfm
Head loss per diffuser = 0.25ft
Aeration requirement per day equalization =150 cfm for both tanks x .25 = 37.50 cfm
Digester Volume = 374.60 people x 3.0 cu. ft. per person=1123.80 cu. ft. = 8,407.15 gallons
Digester Volume in Cu FT = 8,407.15 gallons - 7.481 = 1,123.80 cu. ft.
Digester Air Requirement = (1,123.80 cu. ft =1000 cu. ft.) x 30cfm / 1000 cu ft = 33.71
Allowance for air lift =10 cfm
Total Air requirement = 150 cfm + 37.50 cfm + 10 cfm=197.50 cfm

A
B
C
D
E
F
G
H
I
J
1
PUMP STATION DESIGN ONE PUMP ON
2
Submersible Pump Station
3
Robert G. Burgin, Jr. Inc.
4 1
D&D EQ Basin Pump
5
Date of Calculation 6/6/98
6
7
Average Daily Flowrate expected at Pump Station in GPD
35,000.00
8
Average Daily Flowrate at Pump Station in GPM
24.31
9
Peak Daily Flowrate at Pump Station in GPM
60.76
10 lGround
Level of Pump Station in Feet MSL
2,194.00
111
Full Depth of Pump Station in Feet
11.00
12 jElevation
of the bottom of the Pump Station in Feet MSL
2,183.00
13
Depth of Lowest Invert In from Ground Level in Feet
3.00
14
Elevation on Lowest Invert In of the Pump Station in Feet MSL
2,191.00
15
Low Water Cut Off Elevation in Feet MSL_
2,185.00
16
Lead Pump Cut On Elevation in Feet MSL
2,186.50
17
Lag Pump Cut on Elevation in Feet MSL
2,188.00
18
High Water Alarm Cut On Elevation in Feet MSL
2,189.50
19
Elevation of High Point in Forcemain System in MSL
2,197.00
20
Static Head on Pumps
12.00
21
Size of Forcemain in Inches
3.00
_
22
Minimum Flow Rate in GPM for 2 ft/sec
44.07
23
Length of Forcemain in Feet including allowance for fittings
0.00
24
1 Hazen and Williams C factor for forcemain pipe
140.00
25
IMaximum Pumping Rate in forcemain in GPM
50.00
26
Headloss in forcemain
0.00
27
Size of Pump Station Piping In Inches
2.50
28
Hazen and Williams C factor for Pump Station piping
100.00
29
Number of tees ( side outlet) in pump station line of flow
2.00
30
Number of elbows in pump station line of flow
2.00
311
Number of gate valves in pump station line of flow
2.00
32
Number of check valves in pump station line of flow
1.00
33
Length of straight pipe in pump station piping
20.00
34
Equivalent length of straight pipe in pump station piping
169.58
35
Headloss in pump station piping
5.68
36
Total Dynamic Head on Pump Station at Low Water Level
17.68
TDH
P. Curve
37
0% Maximum Flowrate
0.00
12.00
18
381
20% Maximum Flowrate
10.00
12.29
17.5
391
40% Maximum Flowrate
20.00
13.04
16.5
401
60% Maximum Flowrate
30.00
14.21
15.5
411
80% Maximum Flowrate
40.00
15.76
14.5
421
100% Maximum Flowrate
50.00
17.68
13.5
43
44
45
46
47
48
49
Page 1

A B
C
D E F G H
I --I i
so
51
52
53.
D&D Equalization Pump and System Curve
20.00 . ................ ..... .... . .......... ................. .... .......... ....................... . .... ..................................... ............. ....... *""'*"*'*'* . . ................. ........ .. ------ --------------- .......
oulds 2wd/3wd 1/3hp
18.00 . ..... ............ ........................................................................ ..... ...................... ........... ..................... . ........... ............................................. .. .............................. ..... . .......... ............................................
16.00 . ............. ................................................................... ..................................................................... . ..... . ......
14.00 . ............. .. ................... ................ ........ . ....................................................... ......................... ...................... .... ............................. ..... ............ ..................... ........ .... .............................. .........
•
12.00 a . . . .......... ...................... .. ... ................................................................................. ................................... - ------------ -- ................ .. .... ........... .. .....................
10-00 . ............. ................................................................................................. ................................... ........... ................................................................................. ........ ........... .. ................................................ .......i System Curve
............................... . .......... ..................
Operational Point One Pump
8.00 . ................................................... ............. ............... ............................. ................................................... : ................................................................... ................................. .................................... ....................... ..... ............. . .............................
6.00 . ....................................... .. .. .. ............. .................. ............ .. ....................................................... .......................................................................... ...... .................................................................. ............... . ........................ . .......... ..........
4.00 ............ ........................................................... . ...... ............... ............. ................................................... .. .............................................................................. ............... ........................................................................................ . ........... .................
2.00 . .......................................................................................................... . ....................... .... ......................... ......................... ........ ...................... ....................... ........................... ...................... .............................. ............................... . .............................
54
55
56
57
58
591
601
61
62
164
63
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
821
83
0.00
0.00 10.00 20.00 30.00 40.00
Flow Rate In GPM
F F s stem Pump Curve
84
85
86
87
881
891
901
91
92
93
94
95
961
97
98
991
Page 2

Splitter Box calculation
V notch Weir based on Thompson Formula
Angle —of —weir —in —degrees := 45
Angle_of weir Angle —of —weir —in —degrees in_degrees_divided_by_2 :_
Height —of —weir —in —inches := 6
Angle_of weir in_degrees_divided_by_2 = 22.5
Height of weir in_feet := Height —of —weir —in —inches
1
Height —of —weir —in —feet = 0.5
One —half —weir —length := tan (Angle_of weir in_degrees_divided by_2 -deg) -Height—of—weir—in—feet
One—half weir length = 0.207
Weir —length —in —feet := One—half—weir—length-2
Weir length_in_feet = 0.414
Coefficient :=.57
Qfps :=Coefficient•(,, � •Weir length_in_feet•Height_of weir in feet• 2.32.174•Height of weir in_
Qfps = 0.179
Qgpm : = Qfps •7.481.60
Qgpm = 80.15
Qgpd : = Qgpm • 1440
Qgpd=115415.419

Conversion of Cubic Inches to Gallons
0562 Double "Us" Catfishing WWTP Digester Volume Conversion
Tank Volume (cu. in.) =
Convert to cu. Ft. (divide by 1728 cu. In. per cu. Ft.)
Conversion Factor
2385447A0
1380.467 (cu. ft.)
7.481
Volume in gallons = 10327.3
(For water use 7.481 gallons/cu. Ft)

f
• 0962 Double "D's" Catfishing & R.V.,Resort
WWTP Volume Calculations d�
Digester Volume Tank 121 April,1999
---------------- SOLIDS ----------------
Xv
X 1
Mass: 793763.7842
Volume: 793763.7842 cu. in. �1
Bounding box: X:-228.0000 ---84.5000
Y:-5.9045 -- 110.8455
Z:-143.7500 ---96.0000
Centroid: X:-156.2500
Y: 52.5090
Z:-119.8750
Moments of inertia: X: 14635294465.2770
Y: 32279461715.1611
Z: 23800321710.8394
Products of inertia: XY:-6512455313.6827
YZ:-4996359099.9302
ZX: 14867563111.7106
Radii of gyration: X: 135.7860
Y: 201.6590
Z: 173.1593
Principal moments and X-Y-Z directions about centroid:
I: 1040334915.3368 along [1.0000 0.0000 0.0000]
J: 1494077200.1244 along [0.0000 1.0000 0.0000]
K: 2232773609.0898 along [0.0000 0.0000 1.0000]
Digester Volume Tank 2 21 April,1999
---------------- SOLIDS ---------------- 01
Mass: 1591683.3997
Volume: 1591683.3997 cu. in.
Bounding box: X: 0.0000 -- 143.5000
Y:-5.9045 -- 110.8455
Z:-143.7500 ---48.0000
Centroid: X:71.7500
Y: 52.5090
Z:-95.8750
Moments of inertia: X: 22019103136.4806
Y: 26734478513.8188
Z: 17059915474.4371
Products of inertia: XY: 5996709033.6721
YZ:-8013012275.8468
ZX: -1.0949E+10
Radii of gyration: X: 117.6174
Y: 129.6008
Z: 103.5285
Principal moments and X-Y-Z directions about centroid:
I: 2999742881.7887 along [1.0000 0.0000 0.0000]
J: 3909603065.4202 along [0.0000 1.0000 0.0000]
K: 4477237132.3633 along [0.0000 0.0000 1.0000]
Combined volumes: 2,385,447 cu. in.
1

GRADE LEVEL
2194'
K1
INFLUENT INVERT
2191.6'
10
2�Z
i�
T.O.T. - 2194.5'
- 2194.5' - T.O.T. -
2194.5' T.O.T. - Z194.5'
WATER LEVEL
WATER LEVEL
_ �- GRADE
WATER LEVEL
- -
- -
-
- - -
2193.5'
2193.3'
WATER LEVEL.
2193.3 2193.16'
WATER LEVEL
WEIR NOTCH
2191.1'
2191.15'
WEIR NOTCH
SPUTTER BOX
CHLORINE DE- 2190.5'
CONTACT CHLORINATION
CHAMBER
METERING
fl;
CHAMBER
I
i EQUALIZATION 1 DIGESTER AERATION CLARIFIERS
INVERT
2190.8'
Zk ct3, 5 —
EFFLUENT IMERr
2188.6'
�o•
Y
Z• 5
LEVEL
2194'