WQ0044340_Application_20230727 (2)

I.
North Gate Subdivision
Low Pressure Sewer Main
Calculations for NCDEQ Submittal
Includes the following calculations:
• Sewer Basin Analysis (Downstream Sewer Evaluation) Calculations (1 page)
• North Gate Subdivision Sewer Basin Analysis Map (1 page)
• E-one Pressure Sewer Preliminary Cost and Design Analysis (4 pages)
• Pump General Features and Cut Sheets (3 pages)
• Pump Performance Curve (1 page)
• Pump Typical Specifications (19 pages)
,��%Iiir�-�- RECEIVED
.Es .;
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;ter t�` JUL 1, 7 2023
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:,7>.pco'�'c�Ne. :a4�.� NCDEQ/DWR/NPDES
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K C I
ASSOCIATES OF NC
4505 Falls of Neuse Road
Raleigh, North Carolina 27609
NC LIC. # C-764

SEWER BASIN ANALYSIS (DOWN STREAM EVALUATION) CALCULATIONS
A map of the proposed low pressure sewer system and existing sewer systems is provided on the following
page. The low pressure sewer system area and the three interceptors discharge 21,825 gallons per day
(GPD) into the existing SSMH 4. SSMH 4 ties into the existing Dickens Road pump station with an existing
8" PVC gravity sewer pipe. At 50%full,this 8" PVC has an allowable flow of 276,113 GPD(see table below).
Therefore, this existing system has enough capacity for the proposed extra low pressure sewer system
flow of 4,950 GPD.
CALCULATIONS
Assumption: 225 GPD/home
Low Pressure Sewer System Area—collects to SSMH 1
22 existing homes
22 homes x 225 GPD/home = 4,950 GPD
Interceptor 1 (North Gate Area)—collects to SSMH 1
25 existing homes
25 homes x 225 GPD/home = 5,625 GPD
Interceptor 2 (Birch Creek)—collects to SSMH 2
26 existing homes
26 homes x 225 GPD/home = 5,850 GPD
Interceptor 3 (Magnolia Ridge)—collects to SSMH 3
24 existing homes
24 homes x 225 GPD/home = 5,400 GPD
Allowable Flow for Partially Full Pipe
To
oe a >
w _
_ _ v
c V $ co no
_ ii 0 a
... as =
ua 'o = o
u a C 4a
Ecc O u , chieo 4... c
C u
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o a
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in 'a a.• cc I 2 > a 3
0.5 8 50 0.2500 0.1667 0.01 2.45 0.3927 0.175 276,113

NORTH GATE SUBDIVISION SEWER BASIN ANALYSIS
N
SSMH 4
_ `\\\ 21,825 GPD
\ \ SSMH 2 II I lirt ir
UPA
5850 GPD
-------.............. -10,............./
SSMH 3 / •,� Cr
fr''
5,400 GPD \' -- -_. _- G
I Alii I :.:%%
DICKENS RD
0 DICKENS RD
SSMH 1
Legend ` 10.575GPD
® SSMH ►......�,�:�:�:�:�� .�, 4• :�.•�:�1 Ili i
♦♦♦♦♦♦1 : 11
PS Dickens Rd Pump Station • . s, •
y♦♦♦����� ����� c
Low Pressure Sewer Main •♦♦O♦♦♦♦♦�'v�� " i♦ ri
O♦♦♦p
Gravity Sewer \o� 4�♦♦�♦♦♦�1
Low Pressure Sewer System Area
v, doe
Interceptor 1 re,4
♦♦♦♦ ♦ ♦���
Interceptor 2 ♦j�♦�♦♦j���♦�♦♦j♦j�� •
♦♦♦II♦♦♦ 4.
Interceptor 3 ♦♦♦♦♦♦♦��♦♦♦♦♦��r" 4
OLD POWELL RD
, 1_ III
1 I I I
, ill , ) , I i ,_ „'��
0 200 400 800
Feet
1 inch = 400 feet

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e one
SEWER SYSTEMS
Environment One Corporation
Pressure Sewer Preliminary
Cost and Design Analysis
For
North Gate Subdivision - Rev.2
Fuquay Varina, NC
Prepared For:
KCI Associates of North Carolina, PA
4504 Falls of Neuse Rd, Suite 400
Raleigh NC 27609 USA
Tel: [phone]
Fax:
Prepared By: D. Benson
October 10, 2022
\\Eoneisl\data\Common\SSB\SSB Engineering Data\AE Projects\North Gate,NC\North Gate,NC-Analysis-rev2.EOne

PRELIMINARY PRESSURE SEWER-PIPE SIZING AND BRANCH ANALYSIS
Prepared By: North Gate Subdivision-Rev.2
D.Benson Fuquay Varina,NC October 10,2022
Zone Connects Number Accum Gals/dayMax Flow MaxFlow Pipe SizeMaxLengthof Mainfriction Loss Friction Accum Fri Max Main Minimum PumpStatic Head Total
Max M < p'S
Number to Zone of Pumps Pumps per Pump Per Pump Sim OpGPM) (inches) Velocity this Zone Factor Loss This Loss(feet) Elevation Elevation (feet) Dynamic
in Zone in Zone (gpm) (FPS) (ft/100 ft) Zone Head(ft)
This spreadsheet was calculated using pipe diameters for: SDR11 HDPE Friction loss calculations were based on a Constant for inside roughness"C"of: 150
1.00 3.00 4 4 200 11.00 3 33.00 2.00 3.57 190.00 2.52 4.79 19.08 438.00 431.00 7.00 26.08
2.00 3.00 2 2 200 11.00 2 22.00 2.00 2.38 58.00 1.19 0.69 14.98 438.00 434.00 4.00 18.98
3.00 7.00 2 8 200 11.00 3 33.00 2.00 3.57 308.00-4 2.52 7.76 14.29 438.00 435.00 3.00 17.29
4.00 6.00 2 2 200 11.00 2 22.00 2.00 2.38 142.00 1.19 1.69 13.61 438.00 417.00 21.00 34.61
5.00 6.00 2 2 200 11.00 2 22.00 2.00 2.38 58.00 1.19 0.69 12.61 438.00 424.00 14.00 26.61
6.00 7.00 2 6 200 11.00 3 33.00 2.00 3.57 214.00 2.52 5.39 11.92 438.00 426.00 12.00 23.92
7.00 9.00 4 18 200 11.00 4 44.00 3.00 2.19 385.00 0.65 2.50 6.53 432.00 418.00 14.00 20.53
8.00 9.00 2 2 200 11.00 2 22.00 2.00 2.38 54.00 1.19 0.64 4.67 420.00 416.00 4.00 8.67
9.00 9.00 5 25 200 11.00 5 55.00 3.00 2.74 410.00 0.98 4.03 4.03 420.00 412.00 8.00 12.03
Page 1 Note: This analysis is valid only with the use of progressive cavity type grinder pumps as manufactured by Environment One.
\\Eoneisl\data\Common\SSB\SSB Engineering Data\AE Projects\North Gate, NC\North Gate, NC -Analysis - rev2.EOne

PRELIMINARY PRESSURE SEWER-ACCUMULATED RETENTION TIME(HR)
Prepared By: North Gate Subdivision-Rev.2
D.Benson Fuquay Varina,NC October 10,2022
Zone Connects to Accumulated Pipe Size(inches) Gallons per 100 Length of Zone Capacity of Zone Average Daily Flow Average Fluid Average Retention Accumulated
Number Zone Total of Pumps lineal feet Changes per Day Time(Hr) Retention Time(Hr)
this Zone
This spreadsheet was calculated using pipe diameters for: SDRI 1HDPE Gals per Day per Dwelling 200
1.00 3.00 4 2.00 15.40 190.00 29.27 800 27.34 0.88 3.11
2.00 3.00 2 2.00 15.40 58.00 8.93 400 44.77 0.54 2.77
3.00 7.00 8 2.00 15.40 308.00- 47.44 1,600 33.73 0.71 2.23
4.00 6.00 2 2.00 15.40 142.00 21.87 400 18.29_ 1.31 3.49
5.00 6.00 2 2.00 15.40 58.00 8.93 400. 44.77 0.54 2.71
6.00 7.00 6 2.00 15.40 214.00 32.96 1,200 36.41 0.66 2.18
7.00 9.00 18 3.00 33.47 385.00 128.85 3,600 27.94 0.86 1.52
8.00 9.00 2 2.00 15.40 54.00 8.32 400 48.09 0.50 1.16
9.00 9.00 25 3.00 33.47 410.00 137.21 5,000 36.44 0.66 0.66
0 Page 1 Note:This analysis is valid only with the use of progressive cavity type grinder pumps as manufactured by Environment One
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General Features
The model WH231 or WR231 grinder pump station is a complete unit that
includes: the grinder pump, check valve, polyethylene tank, controls, and alarm
panel. The lower portion of the tank has a smaller diameter, tapered down to
a dish-shaped bottom. These design features reduce the retained volume and
promote scouring, which will minimize odor and corrosiveness.
• Rated for flows of 850 gpd (3218 Ipd)
• 237 gallons (874 liters) of capacity
• Standard outdoor heights range from 55 inches to 92 inches
The WH231 is the "hardwired," or"wired," model where a cable connects the
ml 1�� motor controls to the level controls through watertight penetrations.
The WR231 is the "radio frequency identification" (RFID), or"wireless," model
that uses wireless technology to communicate between the level controls and the
motor controls.
Operational Information
III■ 1111oto
1 hp, 1,725 rpm, high torque, capacitor start, thermally protected, 120/240V, 60
Hz, 1 phase
1111 I
II;� Inlet Connections
4-inch inlet grommet standard for DWV pipe. Other inlet configurations available
from the factory.
\ ,I, / Discharge Connections
1'=M,1 Pump discharge terminates in 1.25-inch NPT female thread. Can easily be
adapted to 1.25-inch PVC pipe or any other material required by local codes.
Discharge
15 gpm at 0 psig (0.95 Ips at 0 m)
11 gpm at 40 psig (0.69 Ips at 28 m)
7.8 gpm at 80 psig (0.49 Ips at 56 m)
Accessories
E/One requires that the Uni-Lateral, E/One's own stainless steel check valve,
be installed between the grinder pump station and the street main for added
protection against backflow.
Alarm panels are available with a variety of options, from basic monitoring to
advanced notice of service requirements.
NA0059P01 Rev D The Remote Sentry is ideal for installations where the alarm panel may be hidden
from view.

OPTIONS : \VH2 LEVELRDCON ROLS)
1
(WIRELESS
W R 231 LEVEL CONTROLS)
HDPE LID
E/ONE EQUALIZER POLYETHYLENE WELDED ON
COVER SHROUD ASSEMBLY
POLYETHYLENE 11111- 7-PROTECTIVE CABLE SHROUD
MOLDED TANK I _ (POLYETHYLENE)
(237 GAL) POWER/ALARM CABLE
(897 L) 4 i/k
;� . -l1 6 CONDUCTOR W/GND
1 (120-240v)
4 :-:-..7
QUICK DISCONNECT
ASSEMBLY, PI : II rl ELECTRICAL QUICK
PVC SLIDE FACE DISCONNECT (EQD)
\ NEMA 6P
\DISCHRGE FTG
1-1/4" (32 mm)
FEMALE NPT, SS y INLET, PVC FLANGE
TO(1 4ACrrrn) O.D.T "
PVC PIPE (STANDARD).
1- ' :- il
-, I DUST COVER SF-PLIED
1igr FOR SHIPMENT (NOT
ALARM awl —� SUITABLE FOR BJRIAL)
m
ON
\25.84 in1�(656 mm) A OFF (�mil
17.84 in 4 — V 1-1/4 FLEXIBLE
78 gal (453 mm) DISCHARGE HOSE
(295 L) all
33 gal
(125 L) el i
,\
r - '—
13.84 in COMBINATION CHECK
(352 mm) VALVE / ANTI-SIPHON
VALVE FLAPPER TYPE
25 gal (NORYL)
(95 L)
SEMI-POSITIVE DISPLACEMENT TYPE PUMP UL
DIRECTLY DRIVEN BY A 1 HP MOTOR41K C
AD SGS 12/23/10 G
DR BY CHK'D DATE ISSUE SCALE
CONCRETE BALLAST MAY BE REQUIRED
SEE INSTALLATION INSTRUCTIONS e on e
FOR DETAILS
SEWER SYSTEMS
NOTE: DIMENSIONS ARE FOR REF ONLY MODEL WH231 / WR231
DETAIL SHEET
\ A0059D02

1
.. OPTIONS : WH231 - / 2 LEVELRDONTRODS)
WR251 - 9 2 R LESS
LEVEL CONTROLS)
GRADE MUST
SLOPE AWAY FROM ��
STATION GRADE '-NE; GRADE
1 / ! ....:41V:=:,.4%\ /
(7/ 4 ."' Ill, ,,,.fr' 's 1
4 7.5"
(1207 mm)
COVER
OVER 57.3"
DISC (1456 mm)
1.
INVERT
1 DEPTH
\ 92.3"
I (2344 mm)
1 -
► - II = �, 1
I Pi. .6ii
,rnI
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37.5"(953 mm) 312"
DISCH (793M m)INLET
r/A
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1 - L
DISCHARGE: 1-1/4" INLET: EPDM GROMMET FOR
NPT, SS 030.0' r- 4" DWV PIPE (STANDARD)
r
(762 m)
051.18"
(1300 mm)
AD SGS 12/23/10 E
DR BY CHK'D DATE ISSUE SCALE
CONCRETE BALLAST MAY BE REQUIRED
SEE INSTALLATION INSTRUCTIONS e ofle
FOR DETAILS
, EW EOM SYSTEMS
NOTE: DIMENSIONS ARE FOR REF ONLY MODEL WH231-92 / WR231-92
UL 0
411) CR \ A�® 005P05�

EIONE SPD PUMP PERFORMANCE CURVE
100 — GRINDER PUMP, 1HP, 1725 RPM 1 — 230
1
95 - 1 - 220
1
1 - 210
90 - 1
1
1 - 200
85 - 1 '
- 190
80 - LOW PRESSURE SYSTEM DESIGN PRESSURE
- 180
_ I I I
75 — CONSULT FACTORY — 170
FOR INTERMITTENT
USE ABOVE 80 PSI
70 - . OR 185 FEET TDH ' — 160
65 - - 150
60 - - 140
- 130
w 55 —
Cr — 120
50 -
w — 110
rn
z cr
a 45 0 — 100 Q
= 40 - ? - 90
ct w o ✓ o
EL Q
o I-u= 35 - - 80 w
_1w
Q 30 - - 70 �`
o
z
I- 0>- >- 25 - 60 0
w
- 50 =
0 20 - U
1- - 40 Q
z
15 - 0
- 30
J
10 - - 20 8
O
5 - - 10
II
0 - - 0
-5 - - -10
I
- -20
-10 -
I - -30
-15 -
- -40
-20 -
- -50
-25 - - -60
I I I I I I I I I I
0 2 4 6 8 10 12 14 16 1
DISCHARGE (0), GPM
ESD 08-0022 REV. 2, 6/08

c...)C , c177�
S E R 1 E S
W-Series "SQUAT"
Wetwell Grinder
Pump Station
with
Wired Level Sensor
r — ( Typical Specifications
Yp p
Semi-Positive
Displacement Type
=1= _ Grinder Pump Stations

SECTION: GRINDER PUMP STATIONS
1.0 General
1.01 GENERAL DESCRIPTION: The MANUFACTURER shall furnish complete factory-built and tested
grinder pump unit(s), each consisting of a grinder pump core suitably mounted on an integral stand of
stainless steel, special polyethylene tank, electrical quick disconnect (NEMA 6P), pump removal
harness, discharge assembly/shut-off valve, anti-siphon valve/check valve assembly, electrical alarm
assembly and all necessary internal wiring and controls. For ease of serviceability, all pump
motor/grinder units shall be of like type and horsepower throughout the system.
1.02 SUBMITTALS: After receipt of notice to proceed, the MANUFACTURER shall furnish a minimum of
six sets of shop drawings detailing the equipment to be furnished including dimensional data and
materials of construction. The ENGINEER shall promptly review this data, and return two copies as
accepted, or with requested modifications. Upon receipt of accepted shop drawings, the
MANUFACTURER shall proceed immediately with fabrication of the equipment.
1.03 MANUFACTURER: Grinder pump stations, complete with all appurtenances, form an integral system,
and as such, shall be supplied by one grinder pump station manufacturer. The CONTRACTOR shall be
responsible for the satisfactory operation of the entire system. The equipment specified shall be a
product of a company experienced in the design and manufacture of grinder pumps for specific use in
low pressure sewage systems. The company shall submit detailed installation and user instructions for
its product, submit evidence of an established service program including complete parts and service
manuals, and be responsible for maintaining a continuing inventory of grinder pump replacement parts.
The MANUFACTURER shall provide, upon request, a reference and contact list from ten of its largest
contiguous grinder pump installations of the type of grinder pumps described within this specification.
The MANUFACTURER of the grinder pump station shall be Environment One Corporation (or
Proposed Alternate).
Attention is directed to the fact that the drawings and overall system design are based on a particular
piece of equipment from a particular manufacturer. These specifications are intended to provide
guidelines for standard equipment of a recognized manufacturer who already meets all the
requirements of this specification.
1.03a ALTERNATE EQUIPMENT: In the event that the CONTRACTOR or another supplier proposes an
Alternate to the specified MANUFACTURER, the ENGINEER recognizes that it will be difficult to
conform to certain details of this Specification due to different manufacturing techniques or grinder
pump station designs. If proposing an Alternate, the CONTRACTOR (supplier) must submit, no less
than 15 business days in advance of the bid date, a complete description of any changes that will be
necessary to the system design, a complete submittal package as outlined in Section 1.02
SUBMITTALS, a system hydraulic analysis based on the proposed pump (including pipe sizes, flows,
velocities, retention times and number and location of recommended valves and cleanouts, if any), a list
of exceptions to this specification, and demonstration of compliance to Section 1.04 EXPERIENCE
CLAUSE of this specification. The CONTRACTOR (supplier) must also complete the Manufacturer
Disclosure Statement found at the end of this specification. This information must be submitted to the
ENGINEER for pre-approval of the alternate equipment being proposed and determination of
compliance with these Contract Documents. If the equipment differs materially or differs from the
dimensions given on the Drawings, the CONTRACTOR (supplier)shall submit complete drawings
showing elevations, dimensions, or any necessary changes to the Contract Documents for the
proposed equipment and its installation. Pre-approval, if granted, will be provided in writing by the
ENGINEER to the CONTRACTOR (supplier)at least five business days in advance of the bid date. If
the ENGINEER'S approval is obtained for Alternate Equipment, the CONTRACTOR (supplier) must
make any needed changes in the structures, system design, piping or electrical systems necessary to
accommodate the proposed equipment at the expense of the CONTRACTOR(supplier).
1.04 EXPERIENCE CLAUSE: The equipment furnished hereunder shall be the product of a company
experienced in the design and manufacture of grinder pumps specifically designed for use in low
2

pressure systems. All manufacturers proposing equipment for this project shall have at least 10 years of
experience in the design and manufacture of units of identical size(s) and performance to the specified
units. All manufacturers proposing equipment for this project must also have not less than 500
successful installations of low pressure sewer systems utilizing grinder pumps of like type to the grinder
pumps specified herein. An installation is defined as a minimum of 25 pumps discharging into a
common force main which forms a low pressure sewer system. The CONTRACTOR(supplier)
proposing alternate equipment shall also submit, as part of the bid schedule, an installation list with
contact person(s), phone number(s) and date(s)of at least 10 installations of the type of pump specified
herein that have been in operation for at least 10 years.
In lieu of this experience clause, the CONTRACTOR (supplier) of alternate equipment will be required
to submit a 5-year performance bond for 100 percent of the stipulated cost of the equipment as bid and
as shown in the Bid Schedule. This performance bond will be used to guarantee the replacement of the
equipment in the event that it fails within the bond period.
1.05 OPERATING CONDITIONS: The pumps shall be capable of delivering 15 GPM against a rated total
dynamic head of 0 feet (0 PSIG), 11 GPM against a rated total dynamic head of 92 feet(40 PSIG), and
7.8 GPM against a rated total dynamic head of 185 feet(80 PSIG). The pump(s) must also be capable
of operating at negative total dynamic head without overloading the motor(s). Under no conditions shall
in-line piping or valving be allowed to create a false apparent head.
1.06 WARRANTY: The grinder pump MANUFACTURER shall provide a part(s)and labor warranty on the
complete station and accessories, including, but not limited to, the panel for a period of 24 months after
notice of OWNER'S acceptance, but no greater than 27 months after receipt of shipment. Any
manufacturing defects found during the warranty period will be reported to the MANUFACTURER by
the OWNER and will be corrected by the MANUFACTURER at no cost to the OWNER.
(OPTIONAL) Certified Installation Program— In lieu of the above warranty, at no charge, the Certified
Installation Program with the same coverage as E/One's standard warranty will be granted for
residential applications of the WH231 grinder pump station when the installation uses an E/One Uni-
Lateral Stainless Steel Curb Stop Assembly(Section 2.12); E/One Sentry Protect Plus alarm panel
(Section 2.13); and the E/One Certified Installation and Start-Up forms located at apps.eone.com have
been successfully completed and submitted.
Only after the installation and start-up data have been successfully completed and submitted via
apps.eone.com will the OWNER be issued a 5-Year Certified Installation Program certificate for each
applicable DH071 or DH151 grinder pump station. This certificate is the proof of the program coverage.
If submissions are not received, no additional coverage has been applied.
1.07 WARRANTY PERFORMANCE CERTIFICATION: As a bid certification requirement, each bidder shall
provide with their bid schedule a Warranty Performance Certification statement executed by the most
senior executive officer of the grinder pump MANUFACTURER, which certifies a minimum of a 24-
month warranty. They must further detail any exclusions from the warranty or additional cost items
required to maintain the equipment in warrantable condition, including all associated labor and shipping
fees, and certify that the MANUFACTURER will bear all costs to correct any original equipment
deficiency for the effective period of the warranty. All preventive maintenance type requirements shall
be included in this form as exclusions. These requirements include, but are not limited to, unjamming of
grinder mechanism, periodic motor maintenance, and periodic cleaning of liquid level controls. Should
the CONTRACTOR(supplier) elect to submit a performance bond in lieu of the experience clause
outlined above, this Warranty Performance Certification shall also be used as a criterion to evaluate the
CONTRACTOR'S (supplier's) performance over the warranty period. A Warranty Performance
Certification form is included with the bid schedule and must be completed and submitted as part of the
bid package. Bids with incomplete forms or missing forms will be considered nonresponsive.
2.0 PRODUCT
2.01 PUMP: The pump shall be a custom designed, integral, vertical rotor, motor driven, solids handling
pump of the progressing cavity type with a single mechanical seal. Double radial 0-ring seals are
required at all casting joints to minimize corrosion and create a protective barrier. All pump castings
3

shall be cast iron, fully epoxy coated to 8-10 mil Nominal dry thickness, wet applied. The rotor shall be
through-hardened, highly polished, precipitation hardened stainless steel. The stator shall be of a
specifically compounded ethylene propylene synthetic elastomer. This material shall be suitable for
domestic wastewater service. Its physical properties shall include high tear and abrasion resistance,
grease resistance, water and detergent resistance, temperature stability, excellent aging properties,
and outstanding wear resistance. Buna-N is not acceptable as a stator material because it does not
exhibit the properties as outlined above and required for wastewater service.
2.02 GRINDER: The grinder shall be placed immediately below the pumping elements and shall be direct-
driven by a single, one-piece motor shaft. The grinder impeller (cutter wheel) assembly shall be
securely fastened to the pump motor shaft by means of a threaded connection attaching the grinder
impeller to the motor shaft. Attachment by means of pins or keys will not be acceptable. The grinder
impeller shall be a one-piece, 4140 cutter wheel of the rotating type with inductively hardened cutter
teeth. The cutter teeth shall be inductively hardened to Rockwell 50 —60c for abrasion resistance. The
shredder ring shall be of the stationary type and the material shall be white cast iron. The teeth shall be
ground into the material to achieve effective grinding. The shredder ring shall have a staggered tooth
pattern with only one edge engaged at a time, maximizing the cutting torque. These materials have
been chosen for their capacity to perform in the intended environment as they are materials with wear
and corrosive resistant properties.
This assembly shall be dynamically balanced and operate without objectionable noise or vibration over
the entire range of recommended operating pressures. The grinder shall be constructed so as to
minimize clogging and jamming under all normal operating conditions including starting. Sufficient
vortex action shall be created to scour the tank free of deposits or sludge banks which would impair the
operation of the pump. These requirements shall be accomplished by the following, in conjunction with
the pump:
1. The grinder shall be positioned in such a way that solids are fed in an upward flow direction.
2. The maximum flow rate through the cutting mechanism must not exceed 4 feet per second. This is
a critical design element to minimize jamming and as such must be adhered to.
3. The inlet shroud shall have a diameter of no less than 5 inches. Inlet shrouds that are less than 5
inches in diameter will not be accepted due to their inability to maintain the specified 4 feet per
second maximum inlet velocity which by design prevents unnecessary jamming of the cutter
mechanism and minimizes blinding of the pump by large objects that block the inlet shroud.
4. The impeller mechanism must rotate at a nominal speed of no greater than 1800 rpm.
The grinder shall be capable of reducing all components in normal domestic sewage, including a
reasonable amount of"foreign objects,"such as paper,wood, plastic, glass, wipes, rubber and the like,
to finely-divided particles which will pass freely through the passages of the pump and the 1-1/4"
diameter stainless steel discharge piping.
2.03 ELECTRIC MOTOR: As a maximum, the motor shall be a 1 HP, 1725 RPM, 240 Volt 60 Hertz, 1
Phase, capacitor start, ball bearing, air-cooled induction type with Class F insulation, low starting
current not to exceed 30 amperes and high starting torque of 8.4 foot pounds. The motor shall be
press-fit into the casting for better heat transfer and longer winding life. Inherent protection against
running overloads or locked rotor conditions for the pump motor shall be provided by the use of an
automatic-reset, integral thermal overload protector incorporated into the motor. The motor protector
shall be specifically investigated and listed by Underwriters Laboratories Inc. for the application. Non-
capacitor start motors or permanent split capacitor motors will not be accepted because of their
reduced starting torque and consequent diminished grinding capability. The wet portion of the motor
armature must be 300 Series stainless steel. To reduce the potential of environmental concerns, the
expense of handling and disposing of oil, and the associated maintenance costs, oil-filled motors will
not be accepted. Pump operation during instances of potentially damaging high current or low voltage
conditions shall be inhibited by an in-pump electrical monitoring system that has been investigated and
listed by Underwriters Laboratories Inc. for the application. Motor start shall be controlled by a DC
4

driven electromechanical relay integrated within the control compartment of the pump. Electrical
monitoring shall ensure the relay operates reliably. AC Mechanical contactors for motor start are
susceptible to damage from short cycling and will not be accepted.
2.04 MECHANICAL SEAL: The pump/core shall be provided with a mechanical shaft seal to prevent
leakage between the motor and pump. The seal shall have a stationary ceramic seat and carbon
rotating surface with faces precision lapped and held in position by a stainless steel spring.
2.05 TANK: Polyethylene Construction. The tank shall be made of rotational molded polyethylene with
high environmental stress cracking resistance. All seams created during tank construction are to be
thermally welded and factory tested for leak tightness. The tank wall and bottom must withstand the
pressure exerted by saturated soil loading at maximum burial depth. All station components must
function normally when exposed to 150 percent of the maximum external soil and hydrostatic pressure.
The overall basin capacity shall be 237 gallons. The basin shall incorporate a tapered bottom with an
inside diameter of no greater than 28 inches to minimize the retained volume and shall be designed to
fit into most septic tanks after removal of the septic tank cover. The largest diameter must be no less
than 50 inches and no greater than 52 inches.
A station that is 55 inches tall shall have no greater than a 36 inch outside diameter flat fiberglass
cover. The 55 inch tall station can be extended in 6 inch increments with normal cylindrical fiberglass
extensions.
Taller stations shall have an accessway with a shroud and domed cover. The accessway shall be an
integral extension of the wetwell assembly and shall include a lockable cover assembly with integral
vent providing low profile mounting and watertight capability. The cover shall be high density
polyethylene, green in color, with a load rating of 150 lbs per square foot. The domed cover shall have
an outside diameter of no greater than 30 inches. Accessway design and construction shall enable field
adjustment of station height in 3" increments without the use of any adhesives or sealants requiring
cure time before installation can be completed. Corrugated sections are to be made of a double-wall
HDPE construction with the internal wall being generally smooth. Corrugations of the outside wall are to
be of a minimum amplitude of 1-1/2 inch to provide necessary transverse stiffness. Any incidental
sections of a single-wall construction are to be a minimum .250 inch thick. All seams created during
tank construction are to be thermally welded and factory tested for leak tightness. The accessway wall
must withstand the pressure exerted by saturated soil loading at maximum burial depth and must
function normally when exposed to 150 percent of the maximum external soil and hydrostatic pressure.
The tank and factory penetrations shall be factory tested and guaranteed to be watertight.
The tank shall be furnished with one EPDM grommet fitting to accept a 4.50"OD DWV or Schedule 40
pipe. Tank dimensions shall be as shown on the contract drawings.
2.06 DISCHARGE HOSE AND DISCONNECT/VALVE: All discharge fittings and piping shall be constructed
of polypropylene, EPDM or PVC. The discharge hose assembly shall include a shut-off valve rated for
200 psi WOG and a quick disconnect feature to simplify installation and pump removal. The bulkhead
penetration shall be factory installed and warranted by the manufacturer to be watertight.
2.07 ELECTRICAL QUICK DISCONNECT: The grinder pump core shall include a factory-installed NEMA
6P electrical quick disconnect (EQD)for all power and control functions. The EQD will be supplied with
32' total, 25' of useable, electrical supply cable (ESC)to connect to the alarm panel. The EQD shall
require no tools for assembly, seal against water before the electrical connection is made, and include
radial seals to assure a watertight seal regardless of tightening torque. Plug-type connections of the
power cable onto the pump housing will not be acceptable due to the potential for leaks and electrical
shorts. Junction boxes are not acceptable due to the large number of potential leak points. The EQD
shall be so designed to be conducive to field wiring as required.
2.08 CHECK VALVE: The pump discharge shall be equipped with a factory installed, gravity operated,
flapper-type integral check valve built into the discharge piping. The check valve will provide a full-
5

ported passageway when open, and shall introduce a friction loss of less than 6 inches of water at
maximum rated flow. Moving parts will be made of a 300 Series stainless steel and fabric reinforced
synthetic elastomer to ensure corrosion resistance, dimensional stability, and fatigue strength. A
nonmetallic hinge shall be an integral part of the flapper assembly providing a maximum degree of
freedom to assure seating even at a very low back-pressure. The valve body shall be an injection
molded part made of an engineered thermoplastic resin. The valve shall be rated for continuous
operating pressure of 235 psi. Ball-type check valves are unacceptable due to their limited sealing
capacity in slurry applications.
2.09 ANTI-SIPHON VALVE: The pump discharge shall be equipped with a factory-installed, gravity-
operated, flapper-type integral anti-siphon valve built into the discharge piping. Moving parts will be
made of 300 Series stainless steel and fabric-reinforced synthetic elastomer to ensure corrosion
resistance, dimensional stability, and fatigue strength.A nonmetallic hinge shall be an integral part of
the flapper assembly, providing a maximum degree of freedom to ensure proper operation even at a
very low pressure. The valve body shall be injection-molded from an engineered thermoplastic resin.
Holes or ports in the discharge piping are not acceptable anti-siphon devices due to their tendency to
clog from the solids in the slurry being pumped. The anti-siphon port diameter shall be no less than
60% of the inside diameter of the pump discharge piping.
2.10 CORE UNIT: The grinder pump station shall have an easily removable core assembly containing pump,
motor, grinder, all motor controls, check valve, anti-siphon valve, electrical quick disconnect and wiring.
The watertight integrity of the core unit shall be established by a 100%factory test at a minimum of 5
PSIG.
2.11 CONTROLS: All necessary motor starting controls shall be located in the cast iron enclosure of the
core unit secured by stainless steel fasteners. Locating motor starting controls in a plastic enclosure is
not acceptable. Wastewater level sensing controls shall be housed in a separate enclosure from motor
starting controls. Level sensor housing must be sealed via a radial type seal; solvents or glues are not
acceptable. Level sensing control housing must be integrally attached to pump assembly so that it may
be removed from the station with the pump and in such a way as to minimize the potential for the
accumulation of grease and debris accumulation, etc. Level sensing housing must be a high-impact
thermoplastic copolymer over-molded with a thermo plastic elastomer. The use of PVC for the level
sensing housing is not acceptable.
Non-fouling wastewater level controls for controlling pump operation shall be accomplished by
monitoring the pressure changes in an integral air column connected to a pressure switch. The air
column shall be integrally molded from a thermoplastic elastomer suitable for use in wastewater and
with excellent impact resistance. The air column shall have only a single connection between the water
level being monitored and the pressure switch. Any connections are to be sealed radially with
redundant 0-rings. The level detection device shall have no moving parts in direct contact with the
wastewater and shall be integral to the pump core assembly in a single, readily-exchanged unit.
Depressing the push to run button must operate the pump even with the level sensor housing removed
from the pump.
All fasteners throughout the assembly shall be 300 Series stainless steel. High-level sensing will be
accomplished in the manner detailed above by a separate air column sensor and pressure switch of the
same type. Closure of the high-level sensing device will energize an alarm circuit as well as a
redundant pump-on circuit. For increased reliability, pump ON/OFF and high-level alarm functions shall
not be controlled by the same switch. Float switches of any kind, including float trees, will not be
accepted due to the periodic need to maintain (rinsing, cleaning) such devices and their tendency to
malfunction because of incorrect wiring, tangling, grease buildup, and mechanical cord fatigue. To
assure reliable operation of the pressure switches, each core shall be equipped with a factory installed
equalizer diaphragm that compensates for any atmospheric pressure or temperature changes. Tube or
piping runs outside of the station tank or into tank-mounted junction boxes providing pressure switch
equalization will not be permitted due to their susceptibility to condensation, kinking, pinching, and
insect infestation. The grinder pump will be furnished with a 6 conductor 14 gauge, type SJOW cable,
pre-wired and watertight to meet UL requirements with a FACTORY INSTALLED NEMA 6P EQD half
attached to it.
6

2.12 STAINLESS STEEL CURB STOP/CHECK VALVE ASSEMBLY(UNI-LATERAL): The curb stop shall
be pressure-tight in both directions. The ball valve actuator shall include position stop features at the
fully opened and closed positions. The curb stop/check valve assembly shall be designed to withstand
a working pressure of 235 psi.
The stainless steel check valve shall be integral with the curb stop valve. The check valve will provide a
full-ported 1-1/4" passageway and shall introduce minimal friction loss at maximum rated flow. The
flapper hinge design shall provide a maximum degree of freedom and ensure seating at low back
pressure.
Engineered Thermoplastic Fittings—All plastic fitting components are to be in compliance with
applicable ASTM standards.
0-ringfor
All pipeconnections shall be made usingcompression fittingconnections includinga Buna-N o
p
sealing to the outside diameter of the pipe. A split-collet locking device shall be integrated into all pipe
connection fittings to securely restrain the pipe from hydraulic pressure and external loading caused by
shifting and settling.
Curb Boxes—Curb boxes shall be constructed of ABS, conforming to ASTM-D 1788. Lid top casting
shall be cast iron, conforming to ASTM A-48 Class 25, providing magnetic detectability, and be painted
black. All components shall be inherently corrosion-resistant to ensure durability in the ground. Curb
boxes shall provide height adjustment downward (shorter)from their nominal height.
High Density Polyethylene Pipe(Supplied by others) — Pipe shall be have a working pressure of
160 psi minimum and shall be classified SDR per ASTM D 3035.
Pipe Dimensions—The SDR (Standard Dimension Ratio) of the pipe supplied shall be as specified by
the SPECIFYING ENGINEER. SDR 7, 9 and 11 fittings are available from the MANUFACTURER.
Factory Test—The stainless steel, combination curb stop/check valve component shall be 100 percent
hydrostatically tested to 150 psi in the factory.
Construction Practices—Pipe shall be stored on clean, level ground to prevent undue scratching or
gouging of the pipe. If the pipe must be stacked for storage, such stacking should be in accordance with
the pipe manufacturer's recommendations. The pipe should be handled in such a manner that it is not
damaged by being dragged over sharp objects or cut by chokers or lifting equipment.
Segments of pipe having cuts or gouges in excess of 10 percent of the wall thickness of the pipe shall
be cut out and removed. The undamaged portions of the pipe shall be rejoined using the butt fusion
joining method. Sections of polyethylene pipe should be joined into continuous lengths on the job site
above ground. The joining method shall be the butt-fusion method and shall be performed in strict
accordance with the pipe manufacturer's recommendations. The butt-fusion equipment used in the
joining procedure shall be capable of meeting all conditions recommended by the pipe manufacturer,
including, but not limited to, fusion temperature, alignment, and fusion pressure.
Fused segments of pipe shall be handled so as to avoid damage to the pipe. When lifting fused
sections of pipe, chains or cable-type chokers should be avoided. Nylon slings are preferred. Spreader
bars should be used when lifting long, fused sections. Care should be exercised to avoid cutting or
gouging the pipe.
Installation —Assemble the compression fittings according to the fitting manufacturer's
recommendations.
The trench and trench bottom should be constructed in accordance with ASTM D 2321. Embedment
materials should be Class I, Class II or Class III materials as defined in ASTM D 2321. The use of Class
IV and/or Class V materials for embedment is not recommended and should be allowed only with the
approval of the SPECIFYING ENGINEER. Bedding of the pipe should be performed in accordance with
ASTM D 2321. Compaction should be as specified in ASTM D 2321. Deviations from the specified
compaction shall be approved by the SPECIFYING ENGINEER.
7

Haunching specifiedusing and initial backfill should be as in ASTM D 2321 Class I, Class II or Class III
materials. Materials used and compaction shall be as specified by the SPECIFYING ENGINEER. In
cases where a compaction of 85 percent Standard Proctor Density is not attainable, the SPECIFYING
ENGINEER may wish to increase the SDR of the pipe to provide adequate stiffness. ASTM D 2321
sections titled "Minimum Cover for Load Application," "Use of Compaction Equipment" and "Removal of
Trench Protection" should apply unless directed otherwise by the SPECIFYING ENGINEER.
2.13 ALARM PANEL: Each grinder pump station shall include a NEMA 4X, UL-listed alarm panel suitable
for wall or pole mounting. The NEMA 4X enclosure shall be manufactured of thermoplastic polyester to
ensure corrosion resistance. The enclosure shall include a hinged, lockable cover with padlock,
preventing access to electrical components, and creating a secured safety front to allow access only to
authorized personnel. The enclosure shall not exceed 10.5"W x 14" H x 7" D, or 12.5"W x 16" H x 7.5"
D if certain options are included.
The alarm panel shall contain one 15-amp, double-pole circuit breaker for the pump core's power circuit
and one 15-amp single-pole circuit breaker for the alarm circuit. The panel shall contain a push-to-run
feature, an internal run indicator, and a complete alarm circuit. All circuit boards in the alarm panel are
to be protected with a conformal coating on both sides and the AC power circuit shall include an auto
resetting fuse.
The alarm panel shall include the following features: external audible and visual alarm; push-to-run
switch; push-to-silence switch; redundant pump start; and high level alarm capability. The alarm
sequence is to be as follows when the pump and alarm breakers are on:
1. When liquid level in the sewage wet-well rises above the alarm level, the contacts on the alarm
pressure switch activate, audible and visual alarms are activated, and the redundant pump starting
system is energized.
2. The audible alarm may be silenced by means of the externally mounted, push-to-silence button.
3. Visual alarm remains illuminated until the sewage level in the wet-well drops below the "off' setting
of the alarm pressure switch.
The visual alarm lamp shall be inside a red, oblong lens at least 3.75" L x 2.38"W x 1.5" H. Visual
alarm shall be mounted to the top of the enclosure in such a manner as to maintain NEMA 4X rating.
The audible alarm shall be externally mounted on the bottom of the enclosure, capable of 93 dB @ 2
feet. The audible alarm shall be capable of being deactivated by depressing a push-type switch that is
encapsulated in a weatherproof silicone boot and mounted on the bottom of the enclosure (push-to-
silence button).
The entire alarm panel, as manufactured and including any of the following options shall be listed by
Underwriters Laboratories, Inc.
(OPTIONAL) Alarm Contacts Package
• Alarm Activated Dry Contacts—Normally open relay contact closes upon alarm activation.
• Alarm Activated Contacts for Remote Indoor Alarm Module—Will work with or without
power to the alarm panel and is designed to work with E/One's Remote Sentry.
• Alarm Activated Remote (Powered) Contacts—Normally open contacts that close on alarm,
providing 120V on high level alarm.
(OPTIONAL) Generator Receptacle and Auto Transfer—The alarm panel shall include a 20 amp,
250 VAC generator receptacle with a spring-loaded, gasketed cover suitably mounted to provide
access for connection of an external generator while maintaining a NEMA 4X rating.An automatic
transfer switch shall be provided, which automatically switches from AC power to generator power.
Power shall be provided to that alarm panel through the generator receptacle whenever power is
8

present at the receptacle, allowing the audible and visual alarms to function normally in generator
mode. When power is no longer applied to the generator receptacle, the panel is automatically switched
back to the AC Mains power. (No manual switching within the panel enclosure is necessary to switch
from generator power back to AC Mains, so the mode cannot be inadvertently left in the generator
position after pumping down the station in generator mode as is the case with a manual transfer
switch).
(OPTIONAL) Service Equipment/Main Service Disconnect Breaker—A separate, internal breaker
rated and approved for use as"service equipment" and acts as a main service disconnect of the grinder
pump station shall be provided.
(OPTIONAL) Remote Sentry Indoor Alarm Module—A separate, remote indoor alarm module shall
be provided to indicate a high level alarm with or without AC power to the grinder pump station. The
Remote Sentry indoor alarm module shall have an internal power source enabling its continued
operation without AC power. The Remote Sentry shall have an audible alarm and a visual alarm, both
of which shall automatically reset if the high level alarm condition is eliminated. The Remote Sentry
indoor alarm module shall include a Silence button for the audible alarm and a Test button.
(OPTIONAL) Run-time/Hour Meter—A run-time or hour meter to display the total run-time or
operation time for the pump core shall be provided.
(OPTIONAL) Event/Cycle Counter—An event or cycle counter to display the number of operations of
the pump core shall be provided.
(OPTIONAL) SENTRY SIMPLEX PROTECT:
Provides protection from the following operating conditions:
• Low Voltage (Brownout) Protection —A lockout cycle will prevent the motor from operating
and will illuminate an LED if:
o the incoming AC Mains voltage drops below a predetermined minimum, typically 12% of
nameplate (211 volts for a 240 volt system)for 2 to 3 seconds, regardless of whether the
motor is running or not
o the lockout cycle will end if the incoming AC Mains voltage returns to a predetermined
value, typically 10% of nameplate (216 volts for a 240 volt system)
The system continues to retest the voltage every second indefinitely. If the lockout cycle has
been initiated and the voltage comes back above the predetermined starting voltage, the
system will function normally. The LED remains illuminated during a Brownout condition and
remains latched until the pump breaker is turned off and then on again (reset). The audible and
visual alarm will not be activated unless there is a high wastewater level in the tank.
• Run Dry Protection —A 20-minute lockout cycle will prevent the motor from operating and will
illuminate an LED when the wastewater level in the tank is below the pump inlet level. The
condition is rechecked every 20 minutes. If the lockout cycle has been initiated and the
condition is satisfied, the pump is not allowed to cycle normally but the LED remains latched.
The LED will remain latched until the pump breaker is turned off and then on again (reset). If
the condition is not satisfied after 3 consecutive attempts, the visual alarm will be activated until
the pump breaker is turned off and on (reset)or until there is one cycle of normal operation. If a
high level condition is presented at any time, a pump run cycle will be activated.
• High System Pressure Protection —A 20-minute lockout cycle will prevent the motor from
operating and will illuminate an LED when the pressure in the discharge line is atypically high
(closed valve or abnormal line plug). The condition is rechecked every 20 minutes. If the
condition is satisfied, the pump is allowed to cycle normally but the LED remains latched. If the
condition is not satisfied after 3 consecutive attempts, the pump is locked out indefinitely until
the condition is removed and power is reset. The LED will remain latched until the pump
breaker is turned off and then on again (reset). The audible and visual alarm will be activated.
In all of the above cases, if more than one error condition is presented, the LED depicting the most
recent error condition will be displayed.
9

Other included features:
• Alarm Activated Dry Contacts—Normally open relay contact closes upon alarm activation.
• Alarm Activated Contacts for Remote Indoor Alarm Module—Will work with or without power to
the alarm panel and is designed to work with E/One's Remote Sentry.
• Includes Inner Door Dead Front
• Separate LED's for each condition
(OPTIONAL) SENTRY SIMPLEX PROTECT PLUS:
• All Sentry Protect features (as detailed above)
• High/Low Voltage monitoring with Trouble indication
• High/Low Wattage (wattage is used instead of current because it is a better indicator of pump
performance) monitoring with Trouble indication
• Extended Run Time monitoring with Trouble indication
• Cycle/Event Counter
• Run Time Counter (Hour Meter)
• Run Time Limit (time adjustable, user selected options: 10 minutes (default)to 120 minutes in
1-minute intervals
• Power-up Delay (time adjustable, user selected options: None (default), to 300 minutes in 1-
minute intervals
• Alarm Delay (time adjustable, user selected options: None (default) or adjustable in 1-minute
intervals
• System self-test diagnostic
• User selectable Alarm latch
• User Selectable Protect Mode disable
• User selectable buzzer timer
Specific Protect PLUS indicators and programming features shall include:
• Ready LED to indicate AC power to the station is satisfactory
• Pump Run LED to indicate pump is operating
• Trouble LED indicator and predictive Visual Alarm notification ("blinking" alarm lamp; clears on
Normal cycle)
• High Level Alarm LED indicator
• Manual Run switch to manually activate pump
• Menu-driven programmable controller with navigation overlay-type buttons (Enter, Scroll, Up,
Down)
• Normal Operation LED and Mode button for Mode status
• Pump Performance menu LED with LCD Display of the following pump performance statistics:
o Real-time Voltage
o Real-time Amperage
o Real-time Wattage
o Minimum/Maximum/Average Voltage
o Minimum/Maximum/Average Amperage
o Minimum/Maximum/Average Wattage
o Minimum/Maximum Run-time
o Average Run-time
o Last Run-time
o Cycle/Event Counter
o Run Time Counter(Hour Meter)
• Diagnostics Menu LED
• Initialize System Menu LED
• Run Limit Menu LED
• Alarm Delay Menu LED
• Power Delay Menu LED
2.14 SERVICEABILITY: The grinder pump core, including level sensor assembly, shall have two lifting
hooks complete with lift-out harness connected to its top housing to facilitate easy core removal when
10

necessary. The level sensor assembly must be easily removed from the pump assembly for service or
replacement. All mechanical and electrical connections must provide easy disconnect capability for core
unit removal and installation. Each EQD half must include a water-tight cover to protect the internal
electrical pins while the EQD is unplugged. A pump push-to-run feature will be provided for field trouble
shooting. The push-to-run feature must operate the pump even if the level sensor assembly has been
removed from the pump assembly. All motor control components shall be mounted on a readily
replaceable bracket for ease of field service.
2.15 OSHA CONFINED SPACE: All maintenance tasks for the grinder pump station must be possible
without entry into the grinder pump station (as per OSHA 1910.146 Permit-required confined spaces).
"Entry means the action by which a person passes through an opening into a permit-required confined
space. Entry includes ensuing work activities in that space and is considered to have occurred as soon
as any part of the entrant's body breaks the plane of an opening into the space."
2.16 SAFETY: The grinder pump shall be free from electrical and fire hazards as required in a residential
environment. As evidence of compliance with this requirement, the completely assembled and wired
grinder pump station shall be listed by Underwriters Laboratories, Inc., to be safe and appropriate for
the intended use. UL listing of components of the station, or third-party testing to UL standard are not
acceptable.
The grinder pump shall meet accepted standards for plumbing equipment for use in or near residences,
shall be free from noise, odor, or health hazards, and shall have been tested by an independent
laboratory to certify its capability to perform as specified in either individual or low pressure sewer
system applications. As evidence of compliance with this requirement, the grinder pump shall bear the
seal of NSF International. Third-party testing to NSF standard is not acceptable.
3.0 EXECUTION
3.01 FACTORY TEST: Each grinder pump shall be submerged and operated for 1.5 minutes (minimum).
Included in this procedure will be the testing of all ancillary components such as, the anti-siphon valve,
check valve, discharge assembly and each unit's dedicated level controls and motor controls. All factory
tests shall incorporate each of the above listed items. Actual appurtenances and controls which will be
installed in the field shall be particular to the tested pump only. A common set of appurtenances and
controls for all pumps is not acceptable. Certified test results shall be available upon request showing
the operation of each grinder pump at two different points on its curve. Additional validation tests
include: integral level control performance, continuity to ground and acoustic tests of the rotating
components.
The ENGINEER reserves the right to inspect such testing procedures with representatives of the
OWNER, at the GRINDER PUMP MANUFACTURER'S facility.
All completed stations shall be factory leak tested to assure the integrity of all joints, seams and
penetrations. All necessary penetrations such as inlets, discharge fittings and cable connectors shall be
included in this test along with their respective sealing means (grommets, gaskets etc.).
3.02 CERTIFIED SERVICE PROGRAM: The grinder pump MANUFACTURER shall provide a
program implemented by the MANUFACTURER'S personnel as described in this specification to
certify the service company as an authorized serviced center. As evidence of this, the
MANUFACTURER shall provide, when requested, sufficient evidence that they have maintained their
own service department for a minimum of 30 years and currently employ a minimum of five
employees specifically in the service department.
As part of this program, the MANUFACTURER shall evaluate the service technicians as well as the
service organization annually. The service company will be authorized by the MANUFACTURER to
make independent warranty judgments. The areas covered by the program shall include, as a
minimum:
11

1. Pump Population Information—The service company will maintain a detailed database for the
grinder pumps in the territory that tracks serial numbers by address.
2. Inventory Management—The service company must maintain an appropriate level of inventory
(pumps, tanks, panels, service parts, etc.) including regular inventory review and proper inventory
labeling. Service technicians will also maintain appropriate parts inventory and spare core(s)on
service vehicles.
3. Service Personnel Certification—Service technicians will maintain their level-specific certification
annually. The certifications are given in field troubleshooting, repair, and training.
4. Service Documentation and Records—Start up sheets, service call records, and customer
feedback will be recorded by the service company.
5. Shop Organization—The service company will keep its service shop organized and pumps will be
tagged with site information at all times. The shop will have all required equipment, a test tank, and
cleaning tools necessary to service pumps properly.
3.03 DELIVERY: All grinder pump core units, including level controls, will be delivered to the job site 100
percent completely assembled, including testing, ready for installation. Grinder pump cores will be
shipped separately from the tanks. Installing the cores and discharge piping/hose into the tanks is the
only assembly step required and allowed due to the workmanship issues associated with other on-site
assembly. Grinder pump cores must be boxed for ease of handling.
3.04 INSTALLATION: Earth excavation and backfill are specified under SITE WORK, but are also to be
done as a part of the work under this section, including any necessary sheeting and bracing.
The CONTRACTOR shall be responsible for handling ground water to provide a firm, dry subgrade for
the structure, and shall guard against flotation or other damage resulting from general water or flooding.
The grinder pump stations shall not be set into the excavation until the installation procedures and
excavation have been approved by the ENGINEER.
Remove packing material. User instructions MUST be given to the OWNER. Hardware supplied with
the unit, if required, will be used at installation. The basin will be supplied with a standard 4" inlet
grommet (4.50" OD)for connecting the incoming sewer line. Appropriate inlet piping must be used. The
basin may not be dropped, rolled or laid on its side for any reason.
Installation shall be accomplished so that 1 inch to 4 inches of accessway, below the bottom of the lid,
extends above the finished grade line. The finished grade shall slope away from the unit. The diameter
of the excavated hole must be large enough to allow for the concrete anchor.
A 6" inch (minimum) layer of naturally rounded aggregate, clean and free flowing, with particle size of
not less than 1/8"or more than 3/4" shall be used as bedding material under each unit.
A concrete anti-flotation collar, as detailed on the drawings, and sized according to the manufacturer's
instructions, shall be required and shall be pre-cast to the grinder pump or poured in place. Each
grinder pump station with its pre-cast anti-flotation collar shall have a minimum of three lifting eyes for
loading and unloading purposes.
If the concrete is poured in place, the unit shall be leveled, and filled with water, to the bottom of the
inlet, to help prevent the unit from shifting while the concrete is being poured. The concrete must be
manually vibrated to ensure there are no voids. If it is necessary to pour the concrete to a level higher
than the inlet piping, an 8" sleeve is required over the inlet prior to the concrete being poured.
The CONTRACTOR will provide and install a 4-foot piece of 4-inch SCH 40 PVC pipe with water tight
cap, to stub-out the inlet for the property owners' installation contractor, as depicted on the contract
drawings.
12

E/One requires that an E/One Uni-Lateral assembly (E/One part number NB0184PXX or NC0193GXX)
or E/One Redundant Check Valve (E/One part number PC0051 GXX) be installed in the pipe lateral
outside the home between the pump discharge and the street main on all installations.
The electrical enclosure shall be furnished, installed and wired to the grinder pump station by the
CONTRACTOR. An alarm device is required on every installation, there shall be NO EXCEPTIONS. It
will be the responsibility of the CONTRACTOR and the ENGINEER to coordinate with the individual
property owner(s)to determine the optimum location for the alarm panel.
The CONTRACTOR shall mount the alarm device in a conspicuous location, as per national and local
codes. The alarm panel will be connected to the grinder pump station by a length of 6-conductor type
TC cable as shown on the contract drawings. The power and alarm circuits must be on separate power
circuits. The grinder pump stations will be provided with 32 feet total, 25 feet of useable, electrical
supply cable to connect the station to the alarm panel. This cable shall be supplied with a FACTORY
INSTALLED EQD half to connect to the mating EQD half on the core.
3.05 BACKFILL REQUIREMENTS: Proper backfill is essential to the long-term reliability of any
underground structure. Several methods of backfill are available to produce favorable results with
different native soil conditions. The most highly recommended method of backfilling is to surround the
unit to grade using Class I or Class II backfill material as defined in ASTM 2321. Class 1A and Class 1 B
are recommended where frost heave is a concern; Class 1 B is a better choice when the native soil is
sand or if a high, fluctuating water table is expected. Class 1, angular crushed stone, offers an added
benefit in that it doesn't need to be compacted.
Class II, naturally rounded stone, may require more compactive effort, or tamping, to achieve the proper
density. If the native soil condition consists of clean compactable soil, with less than 12%fines, free of
ice, rocks, roots and organic material, it may be an acceptable backfill. Soil must be compacted in lifts
not to exceed one foot to reach a final Proctor Density of between 85% and 90%. Heavy, non-
compactable clays and silts are not suitable backfill for this or any underground structure such as inlet
or discharge lines.
If you are unsure of the consistency of the native soil, it is recommended that a geotechnical evaluation
of the material is obtained before specifying backfill.
Another option is the use of a flowable fill (i.e., low slump concrete). This is particularly attractive when
installing grinder pump stations in augured holes where tight clearances make it difficult to assure
proper backfilling and compaction with dry materials. Flowable fills should not be dropped more than
four feet from the discharge to the bottom of the hole to avoid separation of the constituent materials.
Backfill of clean, native earth, free of rocks, roots, and foreign objects, shall be thoroughly compacted in
lifts not exceeding 12"to a final Proctor Density of not less than 85%. Improper backfilling may result in
damaged accessways. The grinder pump station shall be installed at a minimum depth from grade to
the top of the 1 1/4" discharge line, to assure maximum frost protection. The finish grade line shall be 1"
to 4" below the bottom of the lid, and final grade shall slope away from the grinder pump station.
All restoration will be the responsibility of the CONTRACTOR. Per unit costs for this item shall be
included in the CONTRACTOR'S bid price for the individual grinder pump station. The properties shall
be restored to their original condition in all respects, including, but not limited to, curb and sidewalk
replacement, landscaping, loaming and seeding, and restoration of the traveled ways, as directed by
the ENGINEER.
3.06 START-UP AND FIELD TESTING: The MANUFACTURER shall provide the services of qualified
factory trained technician(s)who shall inspect the placement and wiring of each station, perform field
tests as specified herein, and instruct the OWNER'S personnel in the operation and maintenance of the
equipment before the stations are accepted by the OWNER.
All equipment and materials necessary to perform testing shall be the responsibility of the INSTALLING
CONTRACTOR. This includes, as a minimum, a portable generator and power cable (if temporary
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power is required), water in each basin (filled to a depth sufficient to verify the high level alarm is
operating), and opening of all valves in the system. These steps shall be completed prior to the
qualified factory trained technician(s) arrival on site.
The services of a trained, factory-authorized technician shall be provided at a rate of 40 hours for every
100 grinder pump stations supplied.
Upon completion of the installation, the authorized factory technician(s)will perform the following test
on each station:
1. Make certain the discharge shut-off valve in the station is fully open.
2. Turn ON the alarm power circuit and verify the alarm is functioning properly.
3. Turn ON the pump power circuit. Initiate the pump operation to verify automatic"on/off"controls are
operative. The pump should immediately turn ON.
4. Consult the Manufacturer's Service Manual for detailed start-up procedures.
Upon completion of the start-up and testing, the MANUFACTURER shall submit to the ENGINEER the
start-up authorization form describing the results of the tests performed for each grinder pump station.
Final acceptance of the system will not occur until authorization forms have been received for each
pump station installed and any installation deficiencies corrected.
4.0 OPERATION AND MAINTENANCE
4.01 SPARE CORE: The MANUFACTURER will supply one spare grinder pump core for every 50 grinder
pump stations installed or portion thereof, complete with all operational controls, level sensors, check
valve, anti-siphon valve, pump/motor unit, and grinder.
4.02 MANUALS: The MANUFACTURER shall supply four copies of Operation and Maintenance Manuals
to the OWNER, and one copy of the same to the ENGINEER.
END OF SECTION
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WARRANTY PERFORMANCE CERTIFICATION
As a pre-bid certification requirement, each bidder shall provide a Warranty Performance Certification
executed by the most senior executive officer, which certifies a minimum of a two (2) year warranty. They
must further detail any exclusions from the warranty or additional cost items required to maintain the
equipment in warrantable condition, including all associated labor and shipping fees, and certify that the
manufacturer will bear all costs to correct original equipment deficiency for the effective period of the
warranty.
, by and through my duly authorized
signature below as its most senior operating executive, certify that
will provide a two (2) year warranty on
grinder pump equipment manufactured and supplied by
for the
project. I further certify that, other than
failure to install equipment in accordance with manufacturer's instructions, no exclusions and/or cost items to
maintain said equipment in warrantable condition, including labor, travel and shipping fees, exist except as
detailed immediately below:
EXCLUSIONS: 1.
2.
3.
COST ITEMS TO
MAINTAIN EQUIPMENT Required Avg. monthly cost($)
IN WARRANTABLE CONDITION: Frequency (mos) times warranty period
1. $
2. $
3. $
4. $
5. $
Total labor/material cost to maintain equipment in warrantable condition for warranty period ($):
For any items not identified as exclusions or additional cost items above, OR for additional labor & material
costs required to maintain equipment in warrantable condition that exceed the Avg. monthly cost ($) detailed
above, will bear all costs to correct such original equipment
deficiency for the effective period of the warranty including all applicable labor, travel and shipping fees.
Signature Date
Title
15

MANUFACTURER'S DISCLOSURE STATEMENT
Note: To be completed if proposing an alternate
1.0 GENERAL:
1.01 General Description
Describe all non-conforming aspects to the specification:
1.04 Experience
List 10 low pressure sewer system installations of the type of pump/station specified(progressive cavity
type)that have been in operation for a period of no less than ten years with a minimum of 100 pumps
pumping into a "common" low pressure sewer system. Provide Name and Location, Contact Name, Phone
Number, Number of Pumps, and Install Date for each.
1.05 Operating Conditions
Describe all non-conforming aspects to the specification:
1.06 Warranty
Fully state the manufacturer's warranty:
2.0 PRODUCT:
2.01 Pump
Describe all non-conforming aspects to the specification:
2.02 Grinder
Describe all non-conforming aspects to the specification:
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2.03 Motor
Describe all non-conforming aspects to the specification:
2.05 Tank
Describe all non-conforming aspects to the specification:
2.07 Electrical Quick Disconnect
Describe all non-conforming aspects to the specification:
2.08 Check Valve
Describe all non-conforming aspects to the specification:
2.09 Anti-Siphon Valve
Describe all non-conforming aspects to the specification:
2.11 Controls
Describe all non-conforming aspects to the specification:
2.16 Safety
Describe all non-conforming aspects to the specification:
3.0 EXECUTION:
3.01 Factory Test
Describe all non-conforming aspects to the specification:
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I attest that all questions are answered truthfully and all non-conforming aspects to the specifications have
been described where requested.
Manufacturer:
By: Date:
Name of Corporate Officer Signature
Title of Corporate Officer
Witness: Date:
Name Signature
18

eone
Environment One Corporation
2773 Balltown Road
Niskayuna, New York 12309
www.eone.com
A PCC Company
LM000369 Rev K
8/20
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