WQ0002284_More Information (Received)_20020619

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State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross Jr., Secretary
Alan W. Klimek, P.E., Director
June 19, 2002
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NCDENR
NORTH CAROUNA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
MEMORANDUM
TO: Al Hodge
Washington Regional Office
&
David Goodrich J U N 2 5 2002 _
Groundwater Section
FROM: Nathaniel Thornburg Xpr—--
SUBJECT: Additional Information
W00002284'
Attached is the requested additional information for permit number W00002284. Please carefully
review the additional information package, and notify me if the completed package meets your
(Regional/Groundwater) approval. Please pay careful attention to the infiltrabon/storage lagoon in
regards to groundwater level and mounding. If you have any questions, do not hesitate to contact
me at [phone] ext. 533 or via email at nathaniel.thomburg @ ncmail.neL
Enclosure
Cc: Permit File
1617 Mail Service Center, Raleigh, North Carorina 27699-1617 Telephone [phone] Fax [phone]
An Equal OpporU* Affim abve Nc6on Employer 50% reWcled/10% post -consumer paper

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:PROFESSIONAL GROUP
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June 13, 2002
Mr. Nathaniel D. Thornburg
Environmental Engineer
Non -Discharge Permitting Unit
NCDENR Division of Water Quality
512 North Salisbury
12th Floor
Raleigh, NC 27601
VIA OVERNIGHT DELIVERY
Reference: Application #WQ0002284 — Additional Information Request #2
Kinnakeet Wastewater Treatment Plant Modification & Reuse
Irrigation System — Dare County
Dear Mr: Thornburg,
The following information is. being submitted in connection with Additional Information
Request #2:
General:
1. The attorney for Outer BankwKinnakeet Associates is working on an
amendment to the. Bylaws as requested. Due to, the timeframe involved in
ratification of an amendment, the applicant requests issuance of a
"construction only" permit as outlined in the Additional Information
Request, with this issue to be resolved prior to operation of the reuse
system.
2. The water service which was classified as a cross -connection has been
removed.
3. The schematic drawing has been clarified such that the sludge holding
tank is not in the direct flow line.
4. Appendix C of the Technical Specifications -has been modified to include
use of the pond for infiltration/storage.
j.
J U N 17 2002
L_-
4417 N. Croatan Hwy. !1. P.O. Box 1068, ■ Kitty Hawk, NC-27.949C_ HARaE PEP,!.
252-261-3266 • Fax: [phone] ■ E-mail: bpg@bisseliprofessional m

i
KINNAKEET SHORES
AVON TOWNSHIP, DARE COUNTY, NC
Appendix "C"
Wastewater Treatment Narrative
Bissell Professional Group
Kitty Hawk, North Carolina
Updated 6-10-02
October 30, 2001
KINNAKEET SHORES
AVON TOWNSHIP, DARE COUNTY, NC
Appendix "C"
Wastewater Treatment Narrative
Bissell Professional Group
Kitty Hawk, North Carolina
Updated 6-10-02
October 30, 2001

:k
NARRATIVE
KINNAKEET SHORES DEVELOPMENT
DARE COUNTY, NORTH CAROLINA
The Kinnakeet Shores development is a proposed residential community located in Dare
County, NC. The project will be constructed in several phases. This permit application
package covers the entire 350,000 GPD capacity of the Wastewater Treatment Facilities,
but the development construction will be phased over the next several years.
This narrative, along with supporting data, specifications and construction plans, as well
as required applications and processing fee are hereby submitted to the North Carolina
Department of Environment, Health and Natural Resources, Division of Waxer Quality
for review and approval. Also included in this packet is supporting data and calculation
and the design calculations and specifications for the wastewater treatment facilities.
The following are items which have been addressed to hopefiiIly provide a better
understanding of the proposal:
1. The Wastewater Treatment Plate will be fed by 4 force maul from the
development which will feed directly into the flow equalization chamber of the
plant.
2. There is a site plan included in the contract drawings showing the WWTP
equipment layout, disposal system, proximity to adjacent property, roads,
waterways, etc. and disposal area designation.
3. The developer will employ the services of a properly certified operator to
maintain and monitor the operation of the plan within State -specified limits.
4. The proposed WWTP is an extended aeration process plant with dual -paths, each
'/2 of the total design flow for the plant. The plant is then followed by a tertiary
filter unit with the effluent going to a combination irrigaxion/mfilbration pond for
spray irrigation and infiltration of the reclaimed water. A 5-day lined storage
pond is provided for noncompliant storage, with provisions made for returning
partially treated effluent to the head of the plant.
Due to initial flow conditions, one side of the aeration is further divided so that
the operator can adjust the plant functions to adequately treat low flow periods.
The initial aeration chamber (Basin #III) has a capacity of approximately 49,450
gallons. Treatment plant monitoring will be provided per permit requirements
and monitoring reports submitted monthly to the Regional Supervisor,
Washington Regional Office, 943 Washington Square Mall, Washington, NC.
27889.
5. Sludge hauling is proposed to be contracted with Atlantic
application of residuals.
Nutrients for land
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U N 1 7 2009
J
NON-DlSCHARaE PE .'

6. A second, outside clarifier is provided to meet dualization requirements. For
initial, low -flow conditions, the central clarifier will be bypassed and the external
clarifier used in connection with the 49,450 GPD aeration chamber which is also
intended for initial low -flow conditions.
7. A hydrogeological report was prepared by Edwin Andrews & Associates and is a
part of this application. Its findings show this site to handle the effluent to be
generated from the development.
8. All pumps and motors in this installation are duplex, and principal blowers are
duplex.
9. A standby power generator is a part of this installation and specifications for it are
included.
10. The facilities are constructed above the 100-year flood elevation of the area and
therefore are protected from that storm's flood waxers.
11. Adequate flow equalization (25%) is provided at the head of the plant (sized in
the WWTP design calculations preceeding).
12. There will be a chain -link fence completely surrounding the plant facilities (see
site plan).
13. All blowers have check valves and gate valves on their discharges.
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J UN 1 7 2002
IJO(J-DISCHARQE PER[°t"t"E iP:r �'

Kinnakeet Shores
Proposed Public Education Package
(Revised 617/02)
A. What is Reclaimed Water?
Reclaimed water is the final product of an advanced treatment process that significantly
reduces pathogens (solids, organics and viruses) from wastewater resulting in safe, clean,
and high -quality water. This treatment process produces water that is ideal for lawn
watering, cooling towers, and other commercial purposes, but is not intended for human
or animal consumption. Kinnakeet's reclaimed water exceeds all water quality
requirements as defined by North Carolina rules and is virtually indistinguishable from
drinking water.
B. Water Consumption
During the summer months, a high percentage of the water that flows through our water
meters is used to water landscapes and grass. By using reclaimed water, we can reduce
the amount of drinking water use for non -drinking purposes such as irrigation, cooling of
buildings, and other commercial uses.
C. Benefits of Using Reclaimed Water
1. Reduces demand for highly treated drinking water.
2. Reduces nutrient loading to the waters of the state.
3. Reduces costs for customers.
4. Extends the life of treatment facilities.
P. Things you should know about using reclaimed water
irrigating with reclaimed water is not much different from watering with well or tap
water. However, reclaimed water is regulated by state rules that restrict its use for certain
purposes. The following restrictions apply"
1. NO consumption of reclaimed. water (human or animal)
2. NO inter -connection with another water source
3. NO watering of fruit trees or vegetable gardens
4. NO use for body -contact recreation
5. NO filling of swimming pools or hot tubs
6. NO watering within 25 feet of wetlands or within 100 feet of SA classified
meters
7. NO irrigation onto streets, gutters, sidewalks and/or driveways
8. NO irrigation in a manner that causes runoff and/or ponding

All reclaimed water piping, valves, irrigation heads, and other appurtenances are color -
coded, taped, or otherwise marked to identify the source of the water as being reclaimed
water.
• All reclaimed water piping and appurtenances is either colored purple
(Pantone 522) and embossed or integrally stamped or marked
"CAUTION: RECLAIMED WATER — DO NOT DRINK" or is installed
with a purple (Pantone 522) identification tape or polyethylene vinyl wrap.
The warning is stamped on opposite sides of the pipe and repeated every 3
feet or less.
• Identification tape is at least 3 inches wide and have white or black
lettering on purple (Pantone 522) field stating "CAUTION: RECLAIMED
WATER — DO NOT DRINK". Identification tape is installed on top of
reclaimed water pipelines, fastened at least every 10 feet to each pipe
length and run continuously the entire length of the pipe.
• All reclaimed water valves and outlets are of a type, or secured in a
manner, that permits operation by authorized personnel only.
• Above ground hose bibs (spigots or other hand operated connections) are
prohibited. Any hose bibs will be located in locked, below grade vaults
which are clearly labeled as being of nonpotable quality. As an alternative
to the use of locked, below grade vaults with standard hose bib services,
hose bibs which can only be operated by a special tool may be placed in
nonlockable underground service boxes clearly labeled as nonpotable
water.
E. Follow the rules
Where reclaimed water is used, all of the `restricted uses" listed above are violations of
permits and are subject to fines and/or interruption or loss of service.
F. Reclaimed water is a resource ... use it wisely
Watering with reclaimed water is a smart alternative to using drinking water. Proper and
efficient use by all consumers will help ensure the safe and continued availability of this
resource.
G. Water Schedule
How much water is enough? Efficient water wets only through the turf grass root zone,
does not saturate the soil and does not run off. The utility company waters according to
the schedule recommended by its soil scientist. If it rains, watering is reduced according
to rainfall amount. Also, reuse irrigation is not permitted during rainfall events.
2

6. } t
H. Check the vital signs
Your lawn will show many signs when it has too much or too little water. When out in
the yard, check for the indications of improper watering. Look for:
• Soggy areas
• Standing water
• Yellowing of leaf areas
If these conditions exist for an extended period of time contact the utility company.
I. Mulching and landscaping
The use of mulch, rock and ground cover can significantly add beauty and character to
the landscape. Careful selection and proper application of these materials can:
1. Reduce maintenance time
2. Reduce evaporation
J. Frequently Asked Questions
Q. How much will the reclaimed water affect people if it gets on their skin, in their eyes,
or if they accidentally swallow some of it?
A. There will be no harmful effects.
Q. Can people drink the reclaimed water instead of potable water?
A. No. Reclaimed water does not meet drinking water standards. While there's nothing
to suggest that reclaimed water should hurt people, state regulations do not allow the
consumption of reclaimed water.
Q. Can people "hose off' with the reclaimed water? Can our children play in reclaimed
water?
A. No. Because reclaimed water does not meeting drinking water standards, it should be
used only for approved purposes.
Q. How will the reclaimed water affect people if it gets on their clothes?
A- There will be no effect. You should simply wash your clothes as you normally
would.
Q. When is it safe for people to go where reclaimed water has been?
A. It is safe to walk on grass after irrigation with reclaimed water.
For more information contact Outer Bank& Kinnakeet Associates, LLC [phone]
T
JUN 17 2002
3 '
f�UN-DISCHARGE PEP"r1­ 1

1523
Khmakeet Shores Historical Weather/WWTP Data
Weather Data:
Existing Ground Elevation:
7.0 ft. msl.
Weather Data:
Ambient Temperature: high:
35.55 °C
low:
-17.77 °C
average:
20.72 °C
Average Relative Humidity:
76%
AverageWind Speed (taken @ 7' msl)
10.9 mph
Average Atmospheric Pressure
30.05 in.
Normal Days w/
Normal Days w/
Average Monthly
Precipitation
Precipitation >=0
Precipitation >=1
January
5.3 in.
11
1.6
February
4.12 in.
10.3
1.3
March
4.29 in.
10
1.2
April
3.53 in.
9
1
_ May
4.00 in.
10.1
1

1523 Kinnakeet Shores W.W.T.P. Irrigation Pond Calculations 6/7/2002
With the seasonal nature of occupancy for this residential subdivision, in conjunction with existing w.w. treatment plant flow records
it can be anticipated that the 350,000 gpd design flow will be met during the months from May through September. The remainder of
the year will only achieve a percentage of the design flow. To calculate the percentages for this time frame, flows were taken from
ex. Flow data and divided by the highest flow rate during that period. A conservative factor of (2) was then applied to
compute the percentages indicated below.
Wastewater Design Flow Inputs
Proposed Design Flow (gpd) = 350,000
Proposed Pond Surface Area (sf)= 136,496
Anticipated Daily Flow = Proposed Design Flow x Anticipated % of Influent Flow
* Average Monthly Precipitation is taken from Historical Weather Data for Cape Hatteras (see attachment)
Total Monthly Storage Req'd = (Anticipated daily flow x days in month>+(Avg. Monthly Precipitation x Pond Surface Area x 7.48)
* 7.48 is the conversion for cubic feet of storage to gallons
Month Anticipated % of Flow
January 45%
February 45%
March 65%
April
May
June
July
August
September
October
November
December
75%
100%
100%
100%
100%
100%
93%
83%
68%
Total Monthly
Anticipated Daily
Avg. Monthly
Influent/Rainfall
Flow (gpd)
Precipitation(in.)
Days in Month
Amount (gal.)
157,500
5.3
31
5,333,469
157,500
4.12
28
4,760,564
227,500
4.29
31
7,417,529
262,500
3.53
30
8,175,362
350,000
4.00
31
11,190,354
350,000
4.11
30
10,949,713
350,000
4.98
31
11,273,740
350,000
6.00
31
11,360,531
350,000
5.27
30
10,948,416
325,500
4.98
31
10,514,240
290,500
4.97
30
9,137,889
238,000
4.54
31
7,764,301
Wastewater Design Flow Outputs
Proposed Design Flow (gpd) = 350,000
Proposed Pond Surface Area (sf)= 136,496
Maximum Infiltration Rate of Irrigation Pond (gpd/sf)= 1.49
Proposed Irrigation Pond Storage Capcity(gpd)= 5,098,666
Proposed Daily Effluent Irrigation Dispersion (gpd)= 150,973
Avg. Monthly Evaporation is taken from the Potential Evapotranspiration Calculations provided in Ed Andrews Report,
(the computed P.E.T. figures will most likely mirror that of the Evaporation from the Irrigation Pond)
Total Monthly Effluent Dispersion=(Monthly effluent flow x days in month)+(Avg. MonthlyEvaporationxPond Surface Areax7.48)
Anticipated Daily Reuse
Anticipated Daily
Avg. Monthly
Total Monthly
Month
Irrigation Flow (gpd)
Flow (gpd)
Evaporation(in.)
Days in Month
Effluent Output
January
150,973
157,500
0.93
31
4,759,295
February
150,973
157,500
1.68
28
4,370,193
March
150,973
227,500
2.79
31
4,917,560
April
150,973
262,500
3.6
30
4,835,508
May
150,973
350,000
4.65
31
5,075,924
June
150,973
350,000
5.1
30
4,963,141
July
150,973
350,000
4.96
31
5,102,202
August
150,973
350,000
4.34
31
5,049,447
September
150,973
350,000
3.6
30
4,835,508
October
150,973
325,500
2.17
31
4,864,805
November
150,973
290,500
1.5
30
4,656,823
December
150,973
238,000
0.93
31
4,759,295

1523
Kinnakeet Shores W.W.T.P. Irrigation Pond Calculations
6/6/2002
Wastewater Design Mrdtration/Irrigation Calculations
Computed Infiltration Rate(gpd/sf) = (Monthly Input/Output Differential Flow /days in month)/pond surface area
30-Day Storage Capacity = Design Flow (350,000 gpd) x 30 Days
Additional Allowable Infiltration (gpd/sf) = Maximum Allowable Infiltration Rate - Computed Infiltration Rate
Equivalent Capacity for Infiltration = (Maximum Infiltration Rate -Computed Infiltration Rate) x Pond Surface Area
Allowable # of days w/o reuse irrigation = (Equivalent Capacityfor Additional Infiltration/Anticipated Daily Flow)xdays in month
Maximum Allowable Infiltration Rate: 1.49 gpd/sf
Computed
Additional Allowable
Monthly Input/Output
Infiltration Rate
30-Day Storage
Infiltration
Month
Differential Flow (gal)
(gpd/sf)
capcity Req'd
rate(gpolsj)
January
574,173
0.14
10,500,000
1.35
February
390,372
0.10
10,500,000
1.39
March
2,499,970
0.59
10,500,000
0.90
April
3,339,854
0.82
10,500,000
0.67
May
6,114,530
1.45
10,500,000
0.04
June
5,886,572
1.44
10,500,000
0.05
July
6,171,539
1.46
10,500,000
0.03
August
6,311,084
1.49
10,500,000
0.00
September
6,112,908
1.49
10,500,000
0.00
October
5,649,435
1.34
10,500,000
0.15
November
4,481,067
1.09
10,500,000
0.40
December
3,005,006
0.71
10,500,000
0.78
Allowable # of days a
month without Reuse
Month
Irrigation (infil. only)
January
31
February
31
March
31
April
18
May
1
June
1
July
1
August
0
September
0
October
4
November
31
December
31
Equivalent capacity
for Infiltration(gpd)
184,857
189,437
122,735
92,051
6,136
7,160
4,297
0
0
21,139
54,010
106,443

DRAWN BY. DMR
DATE: 3-8-02
DWG. NO.: IUMOWW1
SCALE: NONE
11
PROJECT
KINNAKEET SHORES
PROPOSED 350,000 GPD WWTP
FLOW DIAGRAM SCHEMATIC
SHT. NO.
Mood Noreadm °m 1

Uu9nier Mini -Weather Station
Pagel of 2
Control Irrigation
System Operation
With Sensors for
Wind, Rain, and
Temperature
Having a climate like a smorgasbord can make
for some tricky business when it concerns
your irrigation system. Of course, you can
simply look out the window and decide
whether to turn on the sprinklers manually
each day, but that defeats the purpose of an
automatic system. What you really need is an
automatic device that can make the decision
whether there is too much rain, too much wind
or too much cold to do the watering. With the
Hunter Mini -Weather Station you get each of
Hunter's three different sensor devices in one
single convenient unit. The Mini-Clik rain
sensor shuts sprinklers off in a storm and
keeps them off, automatically compensating
for the amount of rainfall that occurred. The
Freeze-Clik prevents system activation by
automatically stopping the flow of water when
outdoor temperatures drop near freezing. The
Wind-Clik shuts off systems during periods of
high wind, then automatically resets the
system when conditions are more favorable.
Easy to mount (it attaches to your controller
with just two wires) and easy to use, the Mini -
Weather Station takes all the guesswork out of
when you shouldn't water.
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Easily install on any automatic irrigation
system
Versatile enough to meet your particular needs
Heavy duty construction
Built sturdy for years of trouble -free operation
Shuts system off in rainy conditions
Sets from 1/8" to 1" based upon your local
http://www.hunterindustries.r,om/Products/miniclik/wstat.html 6/6/2002

Ijunter Mini -Weather Station
Page 2 of 2
conditions
Sets to shut down system from 12 to 35
mph winds
Choose the wind speed most effective for your
area
Automatically shuts off water at 370F
Eliminates ice on landscapes, walkways,
roadways
Home I Hunter Products I Sensors
http://www.hunterindustries.com/Products/miniclWwstat.html 6/6/2002

Mini -Weather Station Installation Instructions
Pagel of 3
Mini -Weather Station Installation Instructions
Contents
1. General Information
2. Mounting
3. Whina
General Information
The three sensors combined on this product are for wind speed, rainfall and
temperature (near -freezing conditions). Each sensor operates independently
of the other; therefore, any or all of them may be switching at a given
moment. See the enclosed separate product installation instructions for
details on each sensor's operation and settings. Use only the "mounting"
details contained on this sheet.
Top of Pane
Mounting
The weather station is designed to mount on a post of 2" PVC pipe.
However, any combination of pipe and fittings can be used to tailor an
installation. The enclosed "reducer" fitting has two purposes: 1) It allows for
the use of 1/2" PVC pipe for shorter mounts, and 2) Screwed down onto
surface (wood post or deck), it acts as a base for the weather station to fit
onto.
Important. For most accurate temperature sensing, rotate the weather
station so the thermostat portion points north.
Top of Page
Wiring to the Hunter SRC
Controller
The Mini -Weather Station connects
directly to the SRC. This allows you
to easily override the sensor by
using the RUN (BYPASS SENSOR)
position on the dial.
http://www.hunterindustries.com/Products/miniclikiWethTech.html 6/6/2002

Mint -Weather Station Installation Instructions
Page 2 of 3
1. Route the wires from the
Mini -Weather Station up
through the same opening
used for valve wiring.
2. Connect one wire to the RS
terminal and other to the C
terminal (See Figure 1).
3. Connect the valve common to
the RS terminal.
Wiring to the Hunter ICC
Controller
The Mini -Weather Station connects
directly to the ICC. This allows you
to easily override the sensor by
using the Sensor switch on the front
panel.
1. Remove the jumper from the
two "SEN" terminals.
2. Route the wires from the rain
sensor up through the same
conduit opening used for
valve wiring.
3. Connect one wire to the
terminal labeled "SEN" and
the other wire to the other
"SEN" terminal (See Figure
2).
Other 24 VAC Controllers
All three sensors are electrically
connected in a series, so only two
wires need to be used to connect to
the irrigation controller. Use the
green and silver (clear insulation)
wires to hook up to normally -closed
logic situations (See Figure 3).
Follow the wiring instructions in any
of the separate sensor manuals, or
place the two wires on the controller's
"sensor input" screw terminals if
available (See Figure 4). For
controllers with normally -open sensor
inputs (most Toro models), please
consult factory.
http://www.hunterindustries.com/Products/minielikIWethTech.html 6/6/2002

Mid -Weather Station Installation Instructions
Page 3 of 3
DOME
na
rp-
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COMIRM PAO
Note: For extending wires, use wire I8AWG or heavier.
Top of Page
Home I Installation & Technical Contents
http://www.hunterindustries.com/Products/miniclik/'WethTech.html 6/6/2002

5-DAY POND TRANSFER SUBMERSIBLE NON -CLOG PUMPS
ANON -CLOG PUMPS
Pumps shall be F.E.Myers model 6VC20M8-23 submersible non -clog wastewater pumps, or approved equal, selected
in accordance with the following design criteria:
Number of Pumps: 2
Primary Design Flow: 243.00 GPM
Primary Design Head: 14.55 feet
Secondary Design Flow:
Secondary Design Head:
Minimum Shut-off Head:
Minimum Sphere Size: 3.187500 Inches
Efficiency: 64.30%
Motor Horsepower. 2.0 HP
Motor Speed: 870 RPM
Electrical: 3Ph 230 Volts
Cable Length: 25 Feet
I TUMPING ASSEMBLY
Impeller shall be ductile iron and of the two -vane non -clog enclosed type. Vane inlet tips shall be carefully rounded to
prevent stringy material from catching in vanes. Pump -out vanes shall be used in front and back chamber and impeller
shall be dynamically balanced after trimming. The pump shall include a high tensile strength iron centerline discharge
volute with bronze impeller wear ring installed and locked in place by stainless steel set screws. The impeller shall be
fastened to a heavy duty 416 stainless steel common pump/motor drive shaft via a locking screw and washer
arrangement. Volute discharge shall be 6" standard with bolt holes straddling center line.
2.MECHANICAL SEALS
Motor shall be protected by two (2) mechanical seals mounted in tandem with a seal chamber between the seals. Seal
faces shall be carbon and ceramic and lapped to a flatness of one light band. Lower seal faces of tungsten carbide are
optional. An electrode shall be mounted in the seal chamber to detect any water entering the chamber through the
lower seal. Water in the chamber shall cause a red light to turn on at the control panel. This signal shall not stop motor
but act as a warning only, indicating service is required.
3.MOTOR
Single-phase motors shall be of the capacitor start, capacitor run type for high starting torques. Stator winding to be of
open type with insulation good for 150°C (302°F) maximum temperature. Winding housing to be filled with a clean
high dielectric oil that lubricates bearings and seals and transfers heat from winding and rotor to outer shell. Motors
shall have two heavy-duty ball bearings to support pump shaft and take radial and thrust loads. Ball bearings shall be
designed for 50,000 hours B-10 life. Stator shall be heat shrunk into a high tensile strength iron housing. On single-
phase motors a heat sensor thermostatshall be attached to the windings to stop the motor if the temperature of the
winding is more than 130°C (2660F). This overload will automatically reset when the motor cools to safe operating
temperature. On three phase motors two heat sensors shall be imbedded in the windings to perform this fimctiom
4TUMP AND MOTOR CASTINGS
All castings shall be of high tensile strength iron. Castings shall be treated with phosphate and chromate rinse and to be
painted before machining and all machined surfaces exposed to sewage water to be re -painted.
5TOWER CABLES / CABLE ENTRY
Power cables shall be double sealed. The power and control conductor shall be single strand sealed with epoxy potting
compound and then clamped in place with rubber seal bushing to seal outer jacket against leakage and to provide for
strain pull. Cords shall withstand a pull of 300 pounds to meet UL requirements. Insulation of power and control cords
shall be of type SOW/SOWA. Both power and control cords shall have a green carrier ground conductor that attaches
to motor frame.

Eff Bead (F) 6VC20NE-23 9.000- 243.0 GPM • 14.55 et BHP
CATALOG CURVY
16
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4
12
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P1
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1
0
0
250 Soo 750 1000 1250 3-500
Fl— (GPM)
Equivalent Pipe Length: 470' Interior Pipe Diameter: 6.001 C Factor: 130
PUMP PERFORMANCE DATA
Gallons
Total Dynamic
Hydraulic
Velocity
Par
Head in
Efficiency
Minute
Feet
t
FT/Sec
1 Pump Operating
243
15
64.30
2.76
2 Pumps Operating*
326
16
3.70
* Listed performance is for number of pump(s) operating in parallel.
PUMP MOTOR DATA
Service
Service
NEC
Start
Run
Factor
Run
Factor
Start
Run
Code
Service
Model
HP
Phase
Volts
AMPS
AMPS
AMPS
KW
KW
KVA
KVA
Letter
Factor
GVC20M6-23
2.0
3
230
42.00
9.50
11.40
2.70
3.30
16.70
3.80
K
1.2

GROUNDWATER LOWERING STATION SUBMERSIBLE NON -CLOG PUMPS
ANON -CLOG PUMPS
Pumps shall be F.E.Myers model 6VC20M8-23 submersible non -clog wastewater pumps, or approved equal, selected
in accordance with the following design criteria:
Number of Pumps: 2
Primary Design Flow: 347.22 GPM
Primary Design Head: 7.59 feet
Secondary Design Flow:
Secondary Design Head:
Minimum Shut-off Head:
Minimum Sphere Size: 3.187500 Inches
Efficiency: 75.68%
Motor Horsepower: 2.0 HP
Motor Speed: 870 RPM
Electrical: 3Ph 230 Volts
Cable Length: 25 Feet
1.PUMPING ASSEMBLY
Impeller shall be ductile iron and of the two -vane non -clog enclosed type. Vane inlet tips shall be carefully rounded to
prevent stringy material from catching in vanes. Pump -out vanes shall be used in front and back chamber and impeller
shall be dynamically balanced after trimming. The pump shall include a high tensile strength iron centerline discharge
volute with bronze impeller wear ring installed and locked in place by stainless steel set screws. The impeller shall be
fastened to a heavy duty 416 stainless steel common pump/motor drive shaft via a locking screw and washer
arrangement. Volute discharge shall be 6" standard with bolt holes straddling center line.
2.MECHANICAL SEALS
Motor shall be protected by two (2) mechanical seals mounted in tandem with a seal chamber between the seals. Seal
faces shall be carbon and ceramic and lapped to a flatness of one light band. Lower seal faces of tungsten carbide are
optional. An electrode shall be mounted in the seal chamber to detect any water entering the chamber through the
lower seal. Water in the chamber shall cause a red light to turn on at the control panel. This signal shall not stop motor
but act as a warning only, indicating service is required.
3.MOTOR
Single-phase motors shall be of the capacitor start, capacitor ran type for high starting torques. Stator winding to be of
open type with insulation good for 150°C (302°F) maximum temperature. Winding housing to be filled with a clean
high dielectric oil that lubricates bearings and seals and transfers heat from winding and rotor to outer shell. Motors
shall have two heavy-duty ball bearings to support pump shaft and take radial and thrust loads. Ball bearings shall be
designed for 50,000 hours B-10 life. Stator shall be heat shrunk into a high tensile strength iron housing. On single-
phase motors a heat sensor thermostatshall be attached to the windings to stop the motor if the temperature of the
winding is more than 130°C (266°F). This overload will automatically reset when the motor cools to safe operating
temperature. On three phase motors two heat sensors shall be imbedded in the windings to perform this function.
4.PUMP AND MOTOR CASTINGS
All castings shall be of high tensile strength iron. Castings shall be treated with phosphate and chromate rinse and to be
painted before machining and all machined surfaces exposed to sewage water to be re -painted
5.POWER CABLES / CABLE ENTRY
Power cables shall be double sealed. The power and control conductor shall be single strand sealed with epoxy potting
compound and then clamped in place with rubber seal bushing to seal outer jacket against leakage and to provide for
strain pull. Cords shall withstand a pull of 300 pounds to meet UL requirements. Insulation of power and control cords
shall be of type SOW/SOWA Both power and control cords shall have a green carrier ground conductor that attaches
to motor frame.

itf Heed (F)
6VC20M8-23 8.125• 347.2 GPM • 7.59 Ft
CATALOG CURVE
BHP
16
4
1
[ft
SYS
B
Pi
P2
p
p
Floc (GPM)
Equivalent Pipe Length: 1000, Interior Pipe Diameter: 8.00• C Factor: 130
PUMP PERFORMANCE DATA
Gallons
Total Dynamic
Hydraulic
Velocity
Per
Head in
Efficiency
Minute
Feet
t
FT/Sec
1 Pump Operating
347
8
75.68
2.21
2 Pumpa Operating-
487
10
3.11
• Listed performance is for number of pump(s) operating in parallel.
Service
Service
NEC
Start
Run
Factor
Run
Factor
Start
Run
Code
Service
Model
HP
Phase
Volts
AMPS
AMPS
AMPS
KW
KW
KVA
KVA
Letter
Factor
6VC20MB-23
2.0
3
230
42.00
9.50
11.40
2.70
3.30
16.70
3.80
K
1.2