NC0086223_Authorization to Construct_20010226

State of North Carolina
Department of Environment A7rA
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor NCDENR
William G. Ross,Jr., Secretary
Kerr T. Stevens, Director NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
February 26, 2001
Mr. Dale Owen
Route 2, Box 397
Brevard, North Carolina 28712
Subject: Authorization to Construct Permit Issuance
ATC Number 086223 ACA
D&D Catfish Resort WWTP
NPDES Permit NC0086223
Transylvania County
Dear Mr. Owen:
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 MAIL SERVICE CENTER,RALEIGH,NORTH CAROLINA 27699-1617-TELEPHONE [phone]/FAX [phone]
AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER-50%RECYCLED/10%POST-CONSUMER PAPER
VISIT US ON THE WEB AT http://h2o.enr.state.nc.us/NPDES

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. NC0086223
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 II, 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.

l ,
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,
err T. 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 Vd A TF9 • Michael F. Easley
&- )6 i's7 Governor
Uj 7 NCS NR William G. Ross, Secretary
North Carolina Department of Environment and Natural Resources
'C Kerr T. Stevens, Director
Division of Water Quality
Water Quality Section/ NPDES Unit
FAX: [phone]
2/27/01
FAX TO: Robert Burgin, P.E, FAX NUMBER: Ho-- /7,3( - }A-1
Re.: D&D Resort WWTP
FROM: Susan A. Wilson
PHONE: [phone], ext. 510
NO. OF PAGES INCLUDING THIS SHEET: 4
Rob,
Here's a copy of the signed ATC. Let me know if you have (or the owner) have any questions about the
requirements.
Susan 5p
i

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Division of Water Quafity
MEMO From: Date: (71
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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Area and Volume Calculation of Aeration Basin Phase One
1
96200. area = 11303 Sq. it AA-
81
81ear ()M4)(°'11)
4)(°'11)
o.'!
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9 95.3o.
ao• { Z
110700' G 0•Cf4~"r a
Volume and Area Calculation �..e
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. (.2,k °l
1I- •8°
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_digestercult=734.68 Cu. ft.
Volume_digester_gallons ;=Volume_digester_cuft.7.481
Volume_digester_gallons=5496.14 gallons.

Aeration Calculations Phase One
5073.36
Equalization_Aeration_cfm:=1.25.1 1000 2
Equalization_Aeration_cfm=12.683 CFM
'
Digester_Aeration_CFM:=30. 8
1 734.6 1000 .2
Digester_Aeration_CFM=44.081 CFM
Pressure from depth of water in aeation tank=dp
8
dp' 3f feet
dp=3.463 psi Pressure from depth of water in aeation tank
Requirement 2050 cu.ft. of aeration per lbs of BOD5
Population at build out=200 people. BOD5 per person per day estimated =0.23 lbs
BODIbs :=200.0.23
BODIbs =46 lbs BOD5
Ammonia in raw influent=25 mg/I
NHlbs :=25.8.0.0.020'
NHlbs=4.27 lbs per day
NOD:=NHlbs•4.6
NOD=19.642 lbs per day of nitrogen oxygen demand o t<
Therefore calculate the cubic feet per minute of aeration required for the combined NOD
and BOD5 oxygen demand
CFMaeration:—(NOD-f BODIbs)•(2050)
1440
CFMaeration=93.449 cfm
Digester_Aeration_CFM=44.081 cfm
CFMtotal :=CFMaeration Digester_Aeration_CFM-I-Equalization_Aeration_cfm
CFMtotal =150.213 cfm (j
Note:Use 2 blowers at approximately 160 cfm each 0
Note : 12 diffusser in extended aeration tank
DIFFUSERflowaeration :=CFMaeration
12

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"galv. 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 t 0.105.3.463
BLOWER_headloss_total=4.075 PSI

D&D Catfish Resort WWTP Calculations
Plant to be designed Dual Path fl" D� ;�t5(o5
Flow to be equalized through plant to displace peaks
Aeration Volume= 18,730 x 2= 37,460 Gallons C,M RQ� sa
Aeration Volume in cu ft=37,460 Gallons-7.481 = 5,000.35 cu ft 49a4A�
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
•
OC
40 ��

A B C D E F G H I J
1 PUMP STATION DESIGN ONE PUMP ON
2 Submerable Pump Station
3 Robert G.Burgin,Jr.Inc.
4 DaD EQ Basin Pump
5 Date of Calculation 8/6/98
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 60.78
10 Ground Level of Pump Station in Feet MSL 2,194.00
11 Full Depth of Pump Station in Feet 11.00
12 Elevation 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 Hazen and Williams C factor for forcemain pipe 140.00
25 Maximum Pumping Rate in forcemain in GPM 50.00
28 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
31 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
38 20% Maximum Flowrate 10.00 12.29 17.5
39 40%Maximum Flowrate 20.00 13.04 16.5
40 80%Maximum Flowrate 30.00 14.21 15.5
41 80%Maximum Flowrate 40.00 15.76 14.5
42 100%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
r �-
Page 2

•
Splitter Box calculation
V notch Weir based on Thompson Formula
Angle_of_weir_in_degrees:=45
Angle_of_weir in_degrees
Angle_of_weir_in_degrees_divided_by_2 := 2
Height_of_weir_in_inches :=6
Angle_of_weir_in_degrees_divided_by_2=22.5
Height_of_weir_in_inches
Height_of_weir in_feet:= 12
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
4
Qfps:=Coefficient•113 •Weir_length_in_feet•Height_of_weir_in_feet42.32.174•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
0962 Double"D's"Caffishing WWTP Digester Volume Conversion
Tank Volume(cu.in.)= 2385447.00
Convert to cu. Ft.(divide by 1728 cu. In.per cu. Ft.) 1380.467 (cu.ft.)
Conversion Factor 7.481 (For water use 7.481 gallons/cu.Ft)
Volume in gallons= 10327.3

0962 Double "D's" Catfishing & R.V..Resort '$
WWTP Volume Calculations tel'
1/
Digester Volume Tank 1 21 April,1999
SOLIDS
Mass: 793763.7842 nl �� Z 4A'-
Volume: 793763.7842 cu. in. `0 \I 10) J
Bounding box: X: -228.0000 -- -84.5000
Y: -5.9045 -- 110.8455
Z:-143.7500 -- -96.0000
Centroid: X: -156.2500
Y: 52.509011111400.
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 /1 �� �►
SOLIDS U
6121 ( C
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: 71.7500Y \/
Z: 95.875 /
Z: -95.8750
Moments of inertia: X: 22019103136.4806
Y: 26734478513.8188 I/
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.

2,G`4
i
T.O.T. — 2194.5
TU.T. — 2194.5'
I T.O.T. — 2194.5'
T.O.T. — 2194.5'
GRADE LEVEL
2194'
LEVEL
2194'
a
M
EQUALIZATION DIGESTER
AERATION
CLARIFIERS
17
INFLUENT INVERT
EFFLUENT INVERT
2191.6'
2188.6'
INVERT
2190.8'
cl S -
I
7
WATER LEVEL
WATER LEVEL
GRADE
2193.5'
2193.3'
WATER LEVEL WATER LEVEL
2193.3' 2193.16'
WEIR NOTCH
WATER LEVEL
2191.1'
2191.15'
WEIR NOTCH
SPUTTER BOX
CHLORINE DE— 2190.5'
CONTACT CHLORINATION
CHAMBER
METERING
CHAMBER