PS_11_Rehabilitation_Project.pdf
PDF 1 MB Posted
- Attached to
- Pump Station 11 Rehabilitation Project
- Solicitation number
- 2026-50
- Issued by
- Dillon County, South Carolina
About this file
This is a technical specification document and project drawing set for the Pump Station 11 Rehabilitation Project issued by Dorchester County Water & Sewer in South Carolina, located at 6739 Bent Creek Drive, North Charleston, SC 29420. The project encompasses comprehensive rehabilitation of an existing pump station, including removal and replacement of the access hatch, vent cap with a Wager Model 1800 Vertical Odor Control unit, and three submersible pumps specified as Sulzer units. Additional work includes investigation and potential repair of the wetwell structural integrity using chemical grout if needed, replacement of existing coating with Raven 405 epoxy, installation of a Rosemount 8750W magnetic flow meter, verification of pump bases, and replacement of all discharge piping both inside and outside the wetwell in accordance with Dorchester County pump station standards. All ductile iron pipe (DIP) materials shall be lined with Permashield 431 by Tnemec and painted with Tnemec 110GN Clover or DCWS-approved equivalent. The electrical scope involves removal and relocation of an inadequate HVAC panel within the site due to hydrogen sulfide odor concerns, construction of a concrete slab for a diesel generator installation, and replacement of the electrical panel with a non-air-conditioned panel equipped with soft starters, with all wiring and conduits complying with current electrical codes.
All materials must be manufactured in the United States and conform to Dorchester County specifications and details. The lift station shall remain in bypass throughout the construction period, and the contractor is responsible for proper disposal of all removed materials with coordination of any usable materials to Dorchester County. The project drawings indicate detailed technical specifications including specific valve types (AVK swing check valves, plug valves), control systems (Pulsar Ultra 5 Level Controller with Pulsar DBR Transducer), alarm systems (Federal Signal 350-120-30 panel-mounted alarm horn or DCWS-approved equivalent), and SCADA integration with a remote terminal unit. The document includes comprehensive plan and section views with specifications for concrete work, rebar sizing, geotechnical and structural engineer recommendations, and detailed electrical elevation drawings showing panel mounting, floodlighting, and conduit routing requirements.
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PS011 REHABILITATION
PROJECT
LOCATION MAP
N
PS011
PS011 Work List
• All materials shall be made in the US and shall conform to Dorchester County specifications and details.
• The lift station shall be in bypass all throughout construction.
• Remove and replace the access hatch.
• Remove and replace the vent cap with “size on size” DIP vent pipe (Wager Model
1800 Vertical Odor Control with Rain Shield)
• Add lighting.
• Investigate the structural integrity of the wetwell. If found deficient, remove and replace.
o For active infiltration, use necessary chemical grout.
o Replace existing coating with Raven 405 epoxy (125 mil).
o Verify pump bases.
• Remove and replace three (3) new submersible pumps with Sulzer (see attached pump curves and drawdown).
• Remove and replace all discharge piping (inside and outside the wetwell), and shall follow current Dorchester County pump station standards.
o All DIP pipe and fittings shall be lined with Permashield 431 by Tnemec.
o All DIP above-ground piping shall be painted with Tnemec 110GN Clover or
DCWS-approved equivalent.
o Add a magnetic flow meter Rosemount 8750W.
• Electrical o Panel has inadequate HVAC. Remove, replace, and relocate within the site due to strong H2S odor. Construct a concrete slab.
o Install a diesel generator on a concrete slab.
o Replace the electrical panel with a non-air-conditioned panel with soft stats.
All wiring and necessary electrical conduits shall comply with all current codes.
• All materials shall be disposed of by the Contractor. Coordinate with Dorchester County regarding any usable materials.
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MJ TEE
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VALVE
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RESTRAINED JOINT
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MJ FLANGE
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CHECK VALVE
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COVER W/ SAFETY
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VALVE VAULT
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WETWELL &
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CONCRETE
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3/4" CHAMFER
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(TYP. ALL EXPOSED
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6" DIP VENT PIPE
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WETWELL ACCESS
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WAGER MODEL 1800
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USE SULZER PUMPS ONLY
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SUBMERSIBLE PUMP
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316 S.S. LIFTING CHAIN
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316 S.S. GUIDE RAILS
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NSAN
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NFM
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GROUT
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PUMP UNITS OFF
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HIGH WATER ALARM
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HATCH DRAIN
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PRECAST WETWELL
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S.S. ANCHOR BOLTS
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W/ 2" PROJECTION
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(8 REQ'D)
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WETWELL
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3' MIN.
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3' COVER MIN.
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12" MIN.
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COMPACTED
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BACKFILL
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#57 STONE
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TYPICAL PUMP STATION
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DORCHESTER COUNTY WATER & SEWER
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DRAWN BY: %%U STL
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APPROVED BY: %%U ACR
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DRAWING:
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DATE: %%U NOVEMBER 2025
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SECTION W/ FLOW METER
AutoCAD SHX Text NOTES: USE PULSAR ULTRA 5 LEVEL CONTROLLER WITH PULSAR DBR TRANSDUCER. ALL ABOVE GROUND DIP PIPING SHALL BE COATED PER DCWS SPECIFICATIONS. COLOR SHOULD BE TNEMEC 110GN CLOVER OR DCWS APPROVED.
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AVK SWING CHECK VALVE
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PLUG VALVE
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BYPASS CONNECTION
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VERTICAL ODOR CONTROL
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#4 REBAR 12" O.C.E.W. (TYP)
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#4 REBAR 12" O.C.E.W. (TYP)
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GRATE (HALLIDAY
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MAGNETIC FLOW METER
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5 X PIPE DIAMETER
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3 X PIPE DIAMETER
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(X' DIAMETER)
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MIN. 8'
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TOP OF
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BOTTOM OF
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SURFACES)
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USE ROSEMOUNT 8750W
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MAGNETIC FLOW METER SYSTEM
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2" DRAIN LINE 316 S.S. W/ UNION & CAM LOCK
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AIR RELEASE VALVE
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PRESSURE GAUGE
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WITH PLUG VALVE
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RADAR LEVEL TRANSDUCER
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(SEE MOUNTING PLATE DETAIL)
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SEWER VALVE WITH RAIN
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SHIELD
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PER GEOTECHNICAL
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ENGINEER RECOMMENDATIONS
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PER STRUCTURAL ENGINEER
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RECOMMENDATIONS
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PER STRUCTURAL ENGINEER
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RECOMMENDATIONS
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2" ARI MODEL
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(TYP. 2 EA.)
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ALUMINUM PRODUCTS)
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AND BLIND FLANGE
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2" SET ADJUSTABLE
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NUT AND THREAD
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STAND PIPE
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#57 STONE PER
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GEOTECHNICAL ENGINEER
RECOMMENDATIONS
NSAN
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SWING CHECK VALVE
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PLUG VALVE
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BYPASS
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CONNECTION
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PRESSURE
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GAUGE
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TRUE WYE
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2" 316 S.S. DRAIN LINE
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AIR RELEASE VALVE
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CHECK VALVE
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MJ FLANGE
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RESTRAINED JOINT
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PLUG VALVE
AutoCAD SHX Text %%uLEGEND
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MJ TEE
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CONCRETE PAD
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VENT
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2' (MIN.) ALL AROUND
AutoCAD SHX Text PLUG VALVE w/BLIND FLANGE
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TYPICAL PUMP STATION
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DORCHESTER COUNTY WATER & SEWER
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DRAWN BY: %%U STL
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APPROVED BY: %%U ACR
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DRAWING:
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DATE: %%U NOVEMBER 2025
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W/ FLOW METER TOP PLAN
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5 X PIPE DIAMETER
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3 X PIPE DIAMETER
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MAGNETIC FLOW METER
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(VERIFY DIRECTION)
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USE ROSEMOUNT 8750W
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MAGNETIC FLOW METER SYSTEM
AutoCAD SHX Text NOTE: ALL ABOVE GROUND DIP TO BE COATED WITH TNEMEC 110GN CLOVER OR DCWS APPROVED EQUIVALENT.
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NFM
W/ UNION & CAM LOCK
FRONT ELEVATION (LEFT TO RIGHT)
EXTEND TUBING UP A
MIN. 4' ABOVE RACK. ------...
PANEL MOUNTED ALARM HORN
(FEDERAL SIGNAL 350-120-30 OR
DCWS APPROVED EQUIVALENT).
NEMA 4X MARSHALLING BOX WITH
DIVIDER TERMINALS AND LUGS
PER SPECIFICATIONS.---~
FLOW METER DIPLAY (FM)
DORSETT TECHNOLGIES
REMOTE TERMINAL UNIT (RTU).
CONNECT WITH 32#14, 2"C.
FROM PUMP CONTROL PANEL
FOR ALARMS (VERIFY).
SCADA
RTU
OUTDOOR RATED LED FLOOD LIGHT
MOUNT TO FS BOX
ORIENT TOWARDS WETWIELL.
1/2" FS BOX MOUNTED TO
i----TUBING.
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.:u.:
ALARM LIGHT: REMOTE ALARM
LIGHT TO BE SET ABOVE STATION
----FENCING.
SUPPORT CONDUIT ALONG
TUBING.
PUMP CONTROL PANEL (TO BE PROVIDED
WITH LEG STAND KIT IF WIDER THAN 36").
SINGLE POLE WEATHERPROOF SWITCH FOR
CONTROL OF FLOODLIGHT
20AMP GFCI RECEPTACLE WITH
IN-USE WEATHERPROOF COVER
_"x1/2" ALUMINUM FLAT BAR CROSS
MEMBERS WELDED TO SQUARE
ALUMINUM STRUCTURAL TUBING.
_•x_"x_• SQUARE ALUMINUM
STRUCTURAL TUBING.
TYPE "EYS" CONDUIT SEAL SEAL WITH
APPROVED SEALING COMPOUND PER
MANUFACTURER'S RECOMMENDATIONS (TYPICAL)
WI-IERE TUBING IS IN CONTACT WITH
CONCRETE, PAINT WITH 2 COATS OF
BITUMASTIC.
12" DIA. CLASS
"C" CONCRETE
CONDUIT FOR CONDUIT FOR TRANSFER SWITCH,
OAT SWITCH CABLES. SIZE AS REQUIRED (MIN. 2").
" CONDUIT FOR RADAR
TRANSDUCER CABLE.
~----<:,ONDUIT FOR PUMP MOTOR POWER
NOTES:
CABLES, SIZE AS REQUIRED (MIN. 2")
~-----TIIDE "ES" SEALING HUB. SEAL WITH APPROVED SEALING
COMPOUND PER MANUFACTURER'S RECOMMENDATIONS (TYPICAL)
,....______.....,. CONDUIT FOR SCADA WIRING
1. ALL ELECTRICAL CONDUIT UNDERGROUND TO BE NMC SCHEDULE 80.
2. ALL ELECTRICAL CONDUIT ABOVE GROUND TO BE RIGID ALUMINUM CONDUIT (RAC)
3. ALL FASTENERS SHALL BE 316 SS.
4. WATER TIGHT ALUMINUM HUBS AT ALL CABINET PENETRATIONS.
5. ALL TUBING IN CONTACT WITH CONCRETE, PAINT WITH 2 COATS OF BITUMASTC.
REAR ELEVATION (LEFT TO RIGHT)
AUTOMATIC TRANSFER SWITCH
(ATS) PER SPECIFICATIONS OR
DOUBLE THROW SAFETY SWITCH
,-----PER SPECIFICATIONS.
**200 AMP GENERATOR
RECEPTACLE. USE APPLETON
AR20034RS OR CROUSE-HINDS
AR2041 S22 WITH MOUNTING
BOX. ONLY If GEN-SET IS NOT
PERMANENT**
**3R SS TRANSFORMER. OliLY.
FOR 480Y SERVICE,**
MAIN BREAKER (MB) IN NEMA 12
STAINLESS STEEL ENCLOSURE,
GASKETED WITH DRIP SHIELD.
METERING AS REQUIRED
BY LOCAL UTILITY.
:~:1 ( .J ~-:
-:1 r:
.:u.:
ONDUIT FOR GENERATOR, 5• THICK REINFORCED
SIZE AS REQUIRED (MIN. 2"). CONCRETE PAD. REQUIRED
ONLY WI-IEN PUMP CONTROL
ONDUIT FOR CONTROL PANEL, PANEL IS FURNISHED WITH
SIZE AS REQUIRED (MIN. 2"). LEG STAND KIT.
DORCHESTER COUNTY WATER & SEWER
TYPICAL PUMP STA110N
ELECTRICAL
DRAWING:
S-17
DATE: FEB 2026 DRAWN BY: STL
SCALE: NTS APPROVED BY: GM
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TYPICAL PUMP STATION
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DORCHESTER COUNTY WATER & SEWER
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DRAWN BY: %%U STL
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APPROVED BY: %%U GAA
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DRAWING:
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DATE: %%U FEB 2026
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ELECTRICAL
AutoCAD SHX Text NOTES: 1. ALL ELECTRICAL CONDUIT UNDERGROUND TO BE NMC SCHEDULE 80. ALL ELECTRICAL CONDUIT UNDERGROUND TO BE NMC SCHEDULE 80. 2. ALL ELECTRICAL CONDUIT ABOVE GROUND TO BE RIGID ALUMINUM CONDUIT (RAC) ALL ELECTRICAL CONDUIT ABOVE GROUND TO BE RIGID ALUMINUM CONDUIT (RAC) 3. ALL FASTENERS SHALL BE 316 SS. ALL FASTENERS SHALL BE 316 SS. 4. WATER TIGHT ALUMINUM HUBS AT ALL CABINET PENETRATIONS. WATER TIGHT ALUMINUM HUBS AT ALL CABINET PENETRATIONS. 5. ALL TUBING IN CONTACT WITH CONCRETE, PAINT WITH 2 COATS OF BITUMASTC.ALL TUBING IN CONTACT WITH CONCRETE, PAINT WITH 2 COATS OF BITUMASTC.
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NEMA 4X MARSHALLING BOX WITH DIVIDER TERMINALS AND LUGS PER SPECIFICATIONS.
AutoCAD SHX Text AUTOMATIC TRANSFER SWITCH (ATS) PER SPECIFICATIONS OR DOUBLE THROW SAFETY SWITCH PER SPECIFICATIONS.
AutoCAD SHX Text 6'-0"
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20AMP GFCI RECEPTACLE WITH IN-USE WEATHERPROOF COVER
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PUMP CONTROL PANEL (TO BE PROVIDED WITH LEG STAND KIT IF WIDER THAN 36").
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AutoCAD SHX Text 6" THICK REINFORCED CONCRETE PAD. REQUIRED ONLY WHEN PUMP CONTROL PANEL IS FURNISHED WITH LEG STAND KIT.
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OUTDOOR RATED LED FLOOD LIGHT MOUNT TO FS BOX ORIENT TOWARDS WETWELL.
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METERING AS REQUIRED BY LOCAL UTILITY.
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CONDUIT FOR PUMP MOTOR POWER CABLES, SIZE AS REQUIRED (MIN. 2")
AutoCAD SHX Text __"x1/2" ALUMINUM FLAT BAR CROSS MEMBERS WELDED TO SQUARE ALUMINUM STRUCTURAL TUBING.
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EXTEND TUBING UP A MIN. 4' ABOVE RACK.
AutoCAD SHX Text __"x__"x__" SQUARE ALUMINUM STRUCTURAL TUBING.
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1/2" FS BOX MOUNTED TO TUBING.
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SUPPORT CONDUIT ALONG TUBING.
AutoCAD SHX Text DORSETT TECHNOLGIES REMOTE TERMINAL UNIT (RTU). CONNECT WITH 32#14, 2"C. FROM PUMP CONTROL PANEL FOR ALARMS (VERIFY).
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WHERE TUBING IS IN CONTACT WITH CONCRETE, PAINT WITH 2 COATS OF BITUMASTIC.
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CONDUIT AND WIRING, SIZE AS REQUIRED (MIN. 2").
AutoCAD SHX Text MAIN BREAKER (MB) IN NEMA 12 STAINLESS STEEL ENCLOSURE, GASKETED WITH DRIP SHIELD.
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ALARM LIGHT: REMOTE ALARM LIGHT TO BE SET ABOVE STATION FENCING.
AutoCAD SHX Text **200 AMP GENERATOR RECEPTACLE. USE APPLETON AR20034RS OR CROUSE-HINDS AR2041 S22 WITH MOUNTING BOX. ONLY IF GEN-SET IS NOT ONLY IF GEN-SET IS NOT PERMANENT.**.**
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2" CONDUIT FOR RADAR TRANSDUCER CABLE.
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2" CONDUIT FOR FLOAT SWITCH CABLES.
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FLOW METER DIPLAY (FM)
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END CAP
AutoCAD SHX Text PANEL MOUNTED ALARM HORN (FEDERAL SIGNAL 350-120-30 OR DCWS APPROVED EQUIVALENT).
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12" DIA. CLASS "C" CONCRETE
AutoCAD SHX Text TYPE "EYS" CONDUIT SEAL. SEAL WITH APPROVED SEALING COMPOUND PER MANUFACTURER'S RECOMMENDATIONS (TYPICAL)
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FRONT ELEVATION (LEFT TO RIGHT)
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REAR ELEVATION (LEFT TO RIGHT)
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SINGLE POLE WEATHERPROOF SWITCH FOR CONTROL OF FLOODLIGHT
AutoCAD SHX Text TYPE "ES" SEALING HUB. SEAL WITH APPROVED SEALING COMPOUND PER MANUFACTURER'S RECOMMENDATIONS (TYPICAL)
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CONDUIT FOR GENERATOR, SIZE AS REQUIRED (MIN. 2").
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CONDUIT FOR CONTROL PANEL, SIZE AS REQUIRED (MIN. 2").
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CONDUIT FOR TRANSFER SWITCH, SIZE AS REQUIRED (MIN. 2").
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**3R SS TRANSFORMER. ONLY ONLY FOR 480V SERVICE.**.**
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SCADA RTU
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CONTROL PANEL
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JUNCTION BOX
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ATS
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FM
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MB
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2" CONDUIT FOR SCADA WIRING
MIN. 4'
File details come from the government source that posted it. Updated .