2022 Design and Construction Standards - Section 5 Wastewater Pumping Stations

10 SECTION 5 – WASTEWATER PUMP STATIONS PART 1 – GENERAL 11 Description of Work 111 Work under this section consists of furnishing and installing submersible pump stations as detailed on the plans and specified herein It shall include all labor , materials , site grading , structures , excavation , sheeting , backfill , reinforced concrete , masonry , carpentry , yard piping , equipment piping , miscellaneous piping , equipment , electrical work , controls , incidental painting , and all other items or material and work required to construct structures and furnish and install equipment for a complete installation as hereinafter specified 112 If the project is funded by a private developer , the developer is responsible for coordinating with the power provider to install 3 phase power to the wastewater pump station In addition , the developer shall be responsible for any costs associated with providing power to the wastewater pump station The developer will be responsible for the monthly power bill until the County accepts the wastewater pump station It shall be the developer’s responsibility to contact the County and request the power billing account is transferred to the Department of Utilities 12 Design and Permitting 121 Wastewater pump stations shall be designed and permitted at a minimum in accordance with 15A NCAC 2T Regulations , 15A NCAC 2T Regulations , Section 0300 – Sewer Extensions 122 Prior to construction of the facilities , the Contractor shall be responsible for obtaining an electrical permit from the Johnston County Building Inspections Department for all work associated with the project 123 Obtain pump station site plan approval from the planning department , if required 124 Various items or work and materials to be provided under this section are covered under other sections of these specifications 13 Submittals 131 All submittals , construction drawings , specifications , and “ as - built ” drawings shall meet the minimum criteria in Section 8 - Certification , Submittals , and Inspections 132 Shop drawings and manufacturer’s data shall be submitted to the Engineer and the County for the following items Pumps Wet well Generator ATS Drives Valves Meter Controls Rain hood Valve Vault Coatings Basket Screen In - channel Grinder Manholes Geotechnical Report for wet well location and any manhole greater than 20 ’ in depth WASTEWATER PUMPING STATIONS SECTION 5 - 1 2022 RevisionPageSECTION 5 – WASTEWATER PUMP STATIONS 133 Certificates of Compliance shall be submitted to the Engineer and County for the following Pumps Drives Controls In - Channel Grinder all stations 200 GPM or greater 134 Equipment manufacturers shall furnish six 6 copies of an operating and service manual covering their equipment The manual shall contain complete descriptions of each item of equipment and a complete parts list showing factory parts numbers It shall also contain complete operating and service instructions and shall be tabbed and indexed for easy use Manuals shall be submitted within 60 days after final approval of shop drawings PART 2 – MATERIALS 21 General 211 The contractor shall furnish , take possession of when delivered , and install the following equipment where shown on the Plans , complete with all incidental and appurtenances required for a complete , finished installation All equipment components shall be adequately sized to carry all loads and stresses occurring during fabrication and erection and resulting from normal and emergency operation in the installation shown on the Plans and under the conditions specified and or implied 22 Submersible Pumps 2211 Pumps , motors , and controls shall be as specified herein and as indicated on the plans Type Vertical submersible centrifugal non - clog , 2 required Capacity ____ gpm @ _____ ft TDH Minimum sphere size 3 - inch Efficiency at design point ____ min NPSHr at design point ____ ft max Motor performance requirements Maximum motor horsepower ____ hp Maximum motor speed 1800 rpm Nominal power supply 480 VAC , 3 phase , 60 Hz Maximum current ____FLA , ____ LRA Minimum power factor at full load _____ Minimum efficiency at full load ____ Minimum service factor 115 2212 Pumps shall be submersible , centrifugal non - clog capable of passing solids as specified with hydraulic sealing diaphragms , pump mounting plates and base elbows with bottom rail supports , stainless steel upper WASTEWATER PUMPING STATIONS SECTION 5 - 2 2022 RevisionPageSECTION 5 – WASTEWATER PUMP STATIONS rail supports , stainless steel lifting cable , schedule 40 - A stainless steel guide rails , and stainless steel cable supports Pump housing shall be of heavy cast iron construction All fasteners shall be 303 stainless steel or approved equal Each pump shall be capable of being hoisted vertically out of the wetwell , and returned to operation without requiring the operator to enter the wet well It is the intent of these specifications that the pumps , base plates , guide rails , hoisting cable and connections to the control system including panel , starters and circuit breakers , be provided by the pump manufacturer as an integral system The impeller shall be of bronze , ductile iron , or other durable , corrosion - resistant approved material The pump impeller shall be of semi - open non - clog design and shall have back vane s to prevent build up of solids behind the impeller The impeller shall be rigidly fixed to the motor shaft with a key s or other approved fastener so designed to prevent separation under rotational loading The motor shaft shall be stainless steel , supported by upper and lower bearings The upper bearing shall be a self - lubricating ball bearing The lower bearing shall be a sleeve bearing or doublerow ball bearing lubricated from an oil chamber Shaft and bearing shall have sufficient section to withstand all rotational and axial loading to be reasonably expected under normal wastewater pumping situations 2213 The shaft shall be sealed from the volute with an oil - lubricated mechanical seal system The oil chamber shall be equipped with a seal sensor system to detect any leakage around the seal system Pumps shall be tungsten carbide , double type One replacement seal for each pump must be submitted to the County 2214 The motor chamber shall be suitably sealed from the other chambers of the pump and from the exterior so as to be entirely suitable for submerged operation The motor chamber may either be of oil - filled or air - filled design 2215 Pumps shall be as manufactured by Ebara , Fairbanks Morse , Flyght , or Wilo - EMU or approved equal 2216 All pumps 125HP and larger shall be equipped with VFD , housed in approved prefabricated climate controlled electrical building 222 Motors 2221 Pump motors shall be of the sealed submersible type meeting UL Class I , Group D , Division I - Explosion proof requirements The maximum rpm of the motor shall be 1200 , unless approved by the Utilities Department Motors shall meet NEMA thermal rating MGI - 1242 All leads are to be epoxy sealed 2222 Motors rated 25HP up to 125HP will be equipped with a soft start All WASTEWATER PUMPING STATIONS SECTION 5 - 3 2022 RevisionPageSECTION 5 – WASTEWATER PUMP STATIONS motors rated 125HP and greater will be equipped with a VFD Motors used on variable frequency drives VFDs shall be rated for inverter duty applications NEMA MGI - 31 2223 Moisture sensing probes and thermal protectors shall be furnished Motor frame and end shield shall be corrosion resistant cast iron Insulation shall be compatible Class B rated system with Class F material rated for continuous duty in 40 - degree C liquids Motor shaft shall be type 416 stainless steel All hardware shall be stainless steel Submersible pump motors shall be furnished by the pump manufacturer Motors shall not be overloaded at any point within the operating range Motors used in a VFD application are subject to additional requirements and must be pre - approved by the Department of Utilities Section 6A details the requirements for VFD applications 2224 Motors shall be furnished with a minimum of 40 - feet of submersible , waterproof , and multi - conductor power and control cable The cables shall travel through an RGS conduit located on the vent rack to the control panel Cable size shall be sufficient to meet motor requirements 223 External Chamber Seals and Connections 2231 The pumping chamber shall be sealed tightly together utilizing “ O ” - rings or resilient gasket material The power cable connection shall provide for a positive clamping action to seal the electrical connection and relieve strain on the cable strands 23 Pump Controls 231 The pump manufacturer shall provide the pump control panel and accessory equipment The contractor shall install the controls as shown on the drawings and manufacturer’s instructions The control system shall include all motor starters , alternator , relay , level control switches , control panel , circuit breakers , alarm apparatus , and internal wiring 232 For stations that are NOT equipped with Variable Flow Control , discrete cable supported displacement switches shall be employed for level control For stations , WITH speed control such as a VFD AFD , the level control system shall consist of an approved 4 - 20mA pressure transducer with lightening surge protection integral to the transducer in either a submersible or an approved bubbler arrangement with duplex air compressors and manually adjustable set points If the Station has Basins and a wet well , level control for the Basin may be accomplished with the use an Ultrasonic Level Transmitter with the Pump wet well having discrete cable supported displacement switches as a backup in case of failure For any Station utilizing level control devices other then discrete cable supported displacement switches , then discrete cable supported displacement switches must be used for High Well Alarm and Low wet well cutout WASTEWATER PUMPING STATIONS SECTION 5 - 4 2022 RevisionPagePage pageNumber5SECTION 5 – WASTEWATER PUMP STATIONS 24 Control Sequence 241 For stations that are NOT equipped with Variable Flow control devices such as a VFD AFD On rising liquid in the wet well , a mercury - type float switch shall start the lead pump As the liquid continues to rise a Second float will start the lag pump The pump s will continue to pump until the liquid level recedes to the level of a third float switch that shall stop the pumps If the level continues to rise above the “ lag ” float switch a fourth “ High Well ” float switch shall energize the alarm circuit 242 For stations equipped with Variable flow speed control devices such as VFD AFDs A well - set point range will be utilized , when the liquid level rises the pump speed shall be increased proportionally to the level utilizing a standard PID loop If the pump speed increases to maximum and well is not decreasing then a second lag pump will start and both pumps will adjust together according to level conditions If the liquid level recedes below set point range , the pump speed will be decreased proportionally to the level utilizing a standard PID loop , if 2 pumps are running then once the pumps decrease to a minimum speed setting the second lag pump will turn off If the liquid level continues to drop as the sole pump is running at minimum speed the pump will turn off until the liquid level rises above minimum set point 243 The pumps shall automatically alternate between the “ lead ” and “ lag ” positions by means of an electric alternator in the panel 244 Provided with the pump and control equipment shall be electrical contacts , an alarm light and alarm horn which shall be mounted on the exterior of the station The alarm equipment shall be interlocked with wetwell controls to be actuated upon high wet well levels or loss of phase The alarm circuits shall be 120 vac circuitries 25 Control Panel 251 Lights , Switches , and buttons shall be of a standard 30mm waterproof style 252 Control Panel Indicator Lights 2521 All indicator lights shall utilize LED technology instead of incandescent bulbs 2522 Indicator lights will be labeled and provided for the following items as a minimum requirement “ Pump Run ” Green - one for each pump as required indicating the pump is in the run condition WASTEWATER PUMPING STATIONS SECTION 5 - 5 2022 RevisionPagePage pageNumber6SECTION 5 – WASTEWATER PUMP STATIONS “ Seal Fail ” Amber - one provided for each submersible pump energized off the moisture detection sensor circuit “ Over Temp ” Amber – one provided for each pump , energized off the overload or over temperature detection circuit for each pump “ High Wet well ” Red – indication for the high wet well detection circuit “ Low Wet well ” Red – indication for the low - level cutout float , if equipped “ Loss of Phase ” Red – Indication for the Phase Monitoring Detection circuit , and shall indicate when abnormal power is present “ RTU Controlled ” White – Indication for when telemetry unit is in control of station 2523 All indicator lights shall be of a “ press to test ” type or as an alternative a single test button may be added to facilitate a test of all indicator lights 2524 For pumps requiring reduced voltage soft starters RVSS an additional “ RVSS Fault ” indicator red shall be provided 2525 For pumps requiring variable frequency drives additional indicators shall be added including a “ Drive Fault ” red 253 Control Panel Switches , Buttons and Interfaces 2531 A 3 position switch shall be used and labeled for each pump for “ Hand Off Auto ” operation “ Hand ” position shall operate the pumps regardless of liquid level indication “ Auto ” , will allow for normal site operation “ Off ” position will be a true off preventing any local or remote running of the pump 2532 For stations requiring a VFD AFD a speed adjusting potentiometer for each pump shall be added “ 0 - 100 ” and an additional “ Manual Auto ” Switch shall be added to provide the ability to run pump by manual speed operation utilizing the Speed Potentiometer “ Auto ” operation will use an automatic speed adjustment as described in section 141 2533 A single 3 position “ Off On Test ” switch shall be provided that will be used for testing the alarm light and horn Test position shall be WASTEWATER PUMPING STATIONS SECTION 5 - 6 2022 RevisionPagePage pageNumber7SECTION 5 – WASTEWATER PUMP STATIONS spring loaded and return to the “ ON ” position after release The “ OFF ” Position shall only disable the alarm horn light at the site and will not affect operation of the alarming or sensing circuits 2534 “ Alarm Silence ” push button will be provided to silence the alarm horn while leaving the alarm light in operation 2535 Automatic insulation tester Megalert motor guard GP - 500 - M shall be used while the motor is idle and shall utilize the included door mounted panel meter 2536 For VFD applications , that require PLC Control , a color HMI GUI no smaller than 5 - inch by 3 - inch may be used HMI must be approved by the owner , and if not currently owned programming software and program must be provided with the panel to the owner All software if preregistered must be registered in Johnston County Public Utilities name 2537 For RVSS soft starter applications a window through the door to see any indications on the front of the RVSS must be provided unless there is a remote indicator mounted to the door 2538 For VFD applications , Remote operator indicator must be door mounted 254 Phase Loss detection shall be accomplished with a din rail mounted octal socket style device and shall provide the following at a minimum Phase Loss Phase reversal Adjustable Voltage imbalance Adjustable restart delay Upon abnormal voltage conditions , “ loss of phase ” indicator should light and normal operation of the pumps should stop 2541 Automatic insulation tester shall be a Meg - Alert Motorguard GP - 500 - M with panel mount meter or approved equal To be utilized when the motors are idle For stations with soft starts or VFDs output contactors may be required to isolate motor from drive when idle for testing An alarm output from the device should stop normal operation of the pump if a low insulation resistance is detected 2542 Elapsed Time Meter to indicate run hours for each pump shall be required WASTEWATER PUMPING STATIONS SECTION 5 - 7 2022 RevisionPagePage pageNumber8SECTION 5 – WASTEWATER PUMP STATIONS 2543 Automatic electric alternator shall be required for pumps with a built in manual override to “ lock ” in a lead pump 2544 Lag pump shall have time delay on power fail to prevent multiple pumps from starting concurrently after a power fail event 2545 For stations with Generators designed for only single pump operation , a protection circuit must be utilized to prevent a second pump from turning on in “ auto ” if both pumps are called to run while on “ emergency ” power 2546 High water alarm relay wired to alarm circuit 2547 Seal fail alarm relay wired to alarm circuit 2548 Motor Overtemp alarm relay wired to alarm circuit 2549 Provide voltage free dry relay contacts for each alarm condition for RTU connections as well as Pump Run and liquid level controls status 25410 All wiring Shall be labeled Control wiring in panel should be standard colors using red for local 120VAC , Yellow for foreign voltages , blue for low voltage DC wiring Variations may be allowed with owner approval 25411 Provide a120VAC alarm light with a red globe and guard or 120VAC weatherproof red Strobe , and horn , loose for external mounting 25412 Provide Branch Circuits as necessary for site 25413 Discrete cable supported displacement switches must be intrinsically protected Approved Intrinsic relays are Warrick Gems 27A1D0 , and Symcom SSAC ISS - 105 - ISO Equals are permitted with prior approval from the owner 25414 Contacts should be provided to allow for RTU On Off control of the pumps while they are in AUTO RTU will provide a RTU control override signal 120vac and pump run commands 120VAC When RTU energizes circuit this should enable the RTU to turn On Off the pumps , and should energize the “ RTU Control ” light indicator 25415 A 120VAC Duplex Weatherproof GFI power receptacle shall be required and mounted externally to the cabinet on either the side or Bottom of Cabinet WASTEWATER PUMPING STATIONS SECTION 5 - 8 2022 RevisionPagePage pageNumber9SECTION 5 – WASTEWATER PUMP STATIONS 25416 For each motor 25HP or smaller a magnetic starter with under - voltage release and quick trip ambient - compensated overload protection for each leg shall be provided Starting shall be “ across the line ” 25417 For each motor greater then 25HP a reduced voltage soft starter or variable frequency drive with output contactors shall be required Refer to manufacture specs for proper installation 25418 For stations utilizing VFD and PLC control acceptable PLCs are Allen Bradley Micrologix 1400 , Wago 750 - 8212 , and Wago 750 - 882 PLCs must provide Ethernet communications , and programmable over Ethernet Communications to HMI GUI must be accomplished via Ethernet Contact Owner for specific IP addressing to use for the application 25419 Mercury Displacement Switches for Level Controls 254191 Float switches shall be of the mercury - tube type or equivalent technology , encapsulated in polyurethane or vinyl floats compatible with waste water applications The units shall be waterproof , shockproof , explosion proof , and equipped with sufficient submersible cable to extend to the control panel without splicing Any required weights shall be provided Switches shall be suspended in the wet well on a suitable stainless - steel rack 25420 Magnetic Flow Meters – all stations with output 25421 Outlet pipe pressure sensor with output 26 Telemetry 261 Contractor shall furnish through an Approved Control System Integrator , all required work to provide a working wireless telemetry system to remotely monitor and control the pump station from the Owner’s existing SCADA system To include but not limited to such items as antenna , Yagi antenna mounting , antenna cable , radio , SCADA HMI programming , RTU , RTU PLC programming , circuit breakers , TVSS , PLC , relays , battery backup , etc The contractor is responsible for coordination of SCADA programming and start up Current Approved System Integrators Additional Integrators may be used with Owner Approval CITI , Custom Controls Unlimited LLC , Instrulogic Corp LLC 262 Integrator shall submit all shop drawings for the panels for approval WASTEWATER PUMPING STATIONS SECTION 5 - 9 2022 RevisionPage0SECTION 5 – WASTEWATER PUMP STATIONS 263 Integrator shall contact Owner and coordinate locations to conduct a path loss study , and provide documentation of the path loss A fade margin of less than 21dB shall be unacceptable Upon the Owners discretion on marginal or non - line of site paths a physical on - site test of radio communication may be required to “ prove ” the link prior to final approval 264 The RTU supplied shall have the capability of communication with an existing remote master station It shall accomplish communication using Modbus TCP via a spread spectrum radio Radio type and frequency may vary due to specific networks Contact Owner for exact radio model for the application 265 The PLC processor shall be a Wago 750 - 882 or 750 - 8212 If HMI is used then integrator must provide programming software if applicable registered in the Owners Name HMI GUI shall communicate via Ethernet to the PLC 266 RTU will provide at a minimum of six - teen 16 120VAC digital Inputs and four 4 120VAC digital outputs All analog I O shall be individually replaceable multistage surge protection by Phoenix Contact , Citel or equal Refer to contract drawings for additional requirements Typical Input Signals will include Individual Pump Run Status Individual Seal Fail per pump Individual Motor over - temp Per Pump Power status Generator transfer switch status High Well Float status Lead Float Lag Float Off Float Low Cut Off Float If equipped Flow Meter if equipped Speed feedback if VFD equipped Pressure Transmitter if equipped Wet Well level if equipped Outlet Pipe Pressure if equipped Typical Output Signals will include Remote Generator Test start gen set with load SCADA mode enable RTU control Individual pump run commands 267 RTU shall have a Nema 4X enclosure 316 stainless steel , aluminum , or Fiberglass with continuous single hinge and 3 - point latching handle pad WASTEWATER PUMPING STATIONS SECTION 5 - 10 2022 RevisionPage1SECTION 5 – WASTEWATER PUMP STATIONS lockable door equal to a Hoffman enclosure The RTU shall Include the following as a minimum 2671 15A Main breaker 2672 Minimum Size of 24 - inches wide by 30 - inches tall by 8 - inches deep , providing enough room for equipment and 20 available space for additional growth 2673 Minimum 750VA uninterruptable power supply 2674 Corrosion inhibitors installed after testing 2675 120VAC Surge protection 2676 Enclosure penetrations should be limited to bottom of enclosure on the edges to leave room for placing UPS in bottom of cabinet 2677 All wiring and equipment shall be labeled 2678 All Field wiring to devices equipment must be surge protected or utilizing dry contacts to form isolated circuits 2679 Shop drawings will be provided to Owner for approval 26710 Wiring in panel must be secured by wire duct 26711 All grounding and neutral wires must have their own path to an internal bus No looping neutrals or grounds from equipment to equipment allowed 26712 Comply with UL508 and IEEE standards 27 Radio Communication Equipment 271 Path Loss Study A Path loss Study must be accomplished and a copy presented to the County before pole height can be approved B A physical on - site test may be used for antenna height verification Submit Path Loss Form with signal information to the County for approval C Any path loss software used must consider most recent terrain data including approximation height of vegetation and buildings 272 Timber Pole and Antenna Mount A Path loss study must be performed by the contractor and approved by the County before a determination of required antenna height can be made WASTEWATER PUMPING STATIONS SECTION 5 - 11 2022 RevisionPage2SECTION 5 – WASTEWATER PUMP STATIONS B The contractor shall provide and install a Class 3 timber pole with antenna vertically mounted 3 - inches from top of one continuous 20 - foot section of 2 - inch sch 40 RGS pipe which is to be bolted through the pipe and pole using heavy duty galvanized hardware with a minimum thread diameter of 5 8 - inch The pipe shall extend 14 - feet above top of pole and must be aimed according to path loss study requirements a The pole shall have a minimum top circumference and a minimum circumference 6 feet from the butt as required in ANSI 051 - 2002 For a Class 3 , 70 - foot southern pine or Douglas fir pole , the minimum top circumference is 23 - inches and the minimum circumference 6 feet from the butt is 45 - inches b Timber pole is to be installed in a minimum 30 - inch diameter hole bore and encased in 3000psi rated concrete below grade Depth below grade shall be 10 of the length plus 4 feet c If additional height is required , it shall not be accomplished by adding more than one 20 - foot sections of Rigid Galvanized Steel RGS pipe to the top of the Pole RGS Pipe shall be 2 - inch in diameter , schedule 40 Only one 20 - foot section of RGS pipe is to be used to add height without written consent by the County C If it is determined that antenna height would be sufficient below 30ft and considers future tree growth Contractor can submit alternative methods in lieu of a Timber Pole Such structures must be designed for this type of use and shall be no lower than 12ft above grade Simply threading multiple sections of pipe together to reach this height is not acceptable and must use additional mechanical hardware to prevent rotation of pieces If an area light was to be mounted to the pole than the Contractor will still be required to provide a pole for the area light D Installations that require poles over 90 feet in length require a design by a licensed professional engineer evaluating both pole material and foundation design 273 Coaxial Cable Coax A For typical 902 - 928Mhz applications less than 250 feet in length the coax is to be Times Microwave LMR - 600 or equal a Coax shall have a continuous braided shield Corrugated coax shield will not be acceptable B For other frequency ranges and distances consult with Owner for appropriate cabling requirements C Connectors shall be Type “ N ” and weather proofed according to manufacture specs , or wrapped in rubber splicing tape , with an outer coating of UV rated electric tape coating applied extending past the rubber splicing tape as a minimum D Coax should run along the pole using ½ - inch rubber insulated cable clamps with a maximum spacing of 5 - foot Clamps shall be attached using # 10x2 - 1 2 ” ` exterior wood screws such as Power Pro Premium Exterior Wood Screws E Manufacturer minimum bend radius should not be exceeded at any point of time during installation 274 Grounding WASTEWATER PUMPING STATIONS SECTION 5 - 12 2022 RevisionPage3SECTION 5 – WASTEWATER PUMP STATIONS A A continuous # 4 bare copper ground wire shall be stapled to the pole , top to bottom , using round crown galvanized staples not more than 5 foot of spacing B Ground wire shall extend to top of pole and shall be attached using grounding clamps to the RGS pipe and spiral around the pipe at no more than 2 foot spacing in continuous contact to top of pipe and connected again with another grounding clamp End of ground wire should form an aerial at least 6 - inches above top of pipe C At a minimum of 10 feet above grade copper ground wire shall be sleeved in 1 - inch PVC Conduit D The grounding coper wire shall be connected to the site ground to form one continuous ground Additional ground rods may be necessary to eliminate ground differential 275 Antenna 902 - 928MHz applications A Yagi antennas shall be used on Endpoints or Point to Point radio communications a Yagi antenna shall be a 10 element 11dBi gain or greater and equipped with a Type N female connector a Laird PC8910N formerly Cushcraft b PCTEL BMYD8900 c Or Approved Equal B Omni antennas shall only be used at gateway locations in a Point to Multipoint Application a Andrew CommScope DB589 - Y Collinear Omni Antenna 1115dBi Gain or approved equal C Once installed antennas should be adjusted to achieve maximum signal strength possible 276 Radio 902 - 928MHz applications A Radio Types will be dependent upon location and application a Contact Owner for Specific Model i Typical Models 1 Freewave FGR2 - P 2 Intuicom 200 - PEU 3 Schneider Trio JR - 900 4 GE MDS entraNET 900 B Radio Power output shall be adjusted as required to meet FCC Rules for unlicensed wireless equipment operating in the ISM Bands and is regulated by part 15 of the FCC rules a Maximum transmitter output power , fed into the antenna , is 30 dBm 1 watt b Maximum Effective Isotropic Radiated Power EIRP is 36 dBm 4 watt You can obtain the EIRP by simply adding the transmit output power , in dBm , to the antenna gain in dBi if there is loss in the cable feeding the antenna you may subtract that loss 277 Final testing A Radio a Once installed Signal Strength , Noise levels , VSWR , Transmit , Receive , should be documented and turned in to the Owner for review B Antenna WASTEWATER PUMPING STATIONS SECTION 5 - 13 2022 RevisionPage4SECTION 5 – WASTEWATER PUMP STATIONS a Installed height , true azimuth angle , vertical angle shall also be documented and copies given to the Owner C Other a Any other pertinent information related to the installation should be noted 2688 Payment on County Funded Projects A For County funded projects , work bid price to include at minimum a 70 - foot transmission grade class 3 timber pole Additional height may be required based upon the path loss study Additional height up to 20 - feet shall be reimbursed for additional material and shipping cost only B If an engineer solution is required for a pole greater than 90 - feet in length a change order will be negotiated 28 Lighting Pole Lighting 281 A 150watt metal halide luminary Area light or LED equivalent shall be provided on a 24 - inch arm mounted to a pole 15 - feet above grade A photocell for the light will be mounted 6 foot above grade with a weatherproof on off switch mounted to the pole approximately 4 - foot above grade The area light shall be certified as Dark Sky Friendly 29 Wet well and Appurtenances 291 Pump station wet well shall be precast concrete with monolithic base Minimum dimensions shall be as indicated on the Plans The precast wet well shall meet ASTM C913 and ASTM C478 specifications A thicker base shall be provided if required to prevent flotation A minimum 12 - inches thick foundation shall be provided for the wet well base Concrete shall be reinforced to withstand the internal and external loads indicated plus a 100 - psf live load on the top slab The Contractor must backfill around the wetwell and surrounding structures to meet 95 compaction It shall be the Contractor’s responsibility to haul in select material , if needed 292 Joints shall be sealed with butyl rubber mastic Ramneck , or “ O - ring ” gasket installed in accordance with the manufacturer’s instructions All joints shall be parged on the interior and exterior with type “ C ” mortar 293 Interior of wet well and piping inside wetwell shall be factory or “ field ” epoxy coated to a minimum 50 mil surface dry thickness Epoxy sealer prime coating and finish coating shall be NSP 100 and NSP 120 , respectively , Carboline , or approved equal If the wet well is factory epoxy coated , touch - up “ field ” coating will be required Field epoxy or corrosion conditional concrete must be installed by a certified applicator of the approved product unless approved by the County WASTEWATER PUMPING STATIONS SECTION 5 - 14 2022 RevisionPage5SECTION 5 – WASTEWATER PUMP STATIONS 294 The wet well shall have , mounted at 18 - inches above wet well top , a stainless - steel junction box to enable quick disconnect of power leads to pump motors when pulling pumps out for maintenance 295 The wet well shall be equipped with an aluminum access hatch as shown on the plans that shall be of adequate dimensions to pull out pumps with no obstruction 296 All bolts , brackets , hardware , etc for fastening items or bolting piping located in the wetwell shall be STAINLESS STEEL , 316L or coated with Tripac Blue 2000 297 Inflow and outflow pipe connections to wet well shall be sealed using GPT Industries ’ Link - Seal or approved equal 298 A sloped invert of non - shrink grout shall be constructed at the base of the wetwell The invert shall have sufficient slope to prevent build - up of solids in the wetwell bottom Contractor shall meet the recommended manufacturer clearance are meet from the pump volute to the wet well bottom 299 Aluminum access hatches shall be exterior sidewalk , single or double leaf type as required or shown suitable for 300 psf live load Doors shall be equipped with slam lock , and automatic hold - open arm with release handle , safety chain , and compression spring operator The frame shall be provided with drainage channel Hatches shall be Type “ J ” or “ JD ” as manufactured by the Bilco Company , Darp Associates , Haliday , or equal For 6 - feet to 8 - feet diameter structures , Halliday type RIR hatches are preferred Hatch way shall include fall through protection meeting OSHA and ANSI requirements 210 Valve Vault 2101 Valve vault shall be precast concrete with monolithic top and bottom as indicated on the plans 2102 Vault shall have an aluminum access hatch as shown on the plans 2103 A duplex receptacle shall be installed in the vault within 6 - inches of the top of the structure to provide power to the sump pump 2104 Valve Vault shall have a sump pit as shown on plans 2105 Check valve shall be of the horizontal swing type with an outside weighted swing arm 2106 A ¼ - inch NPT tap for pressure gages shall be supplied on both sides of the check valve for each pump One 1 pressure gage shall be installed on the discharge side of the check valve for each pump WASTEWATER PUMPING STATIONS SECTION 5 - 15 2022 RevisionPage6SECTION 5 – WASTEWATER PUMP STATIONS 2107 Sump Pump 210711 One 1 automatic submersible sump pump , with a rated capacity of ten 10 GPM at 10 - feet TDH shall be installed in the equipment capsule sump The sump pump shall be complete with a fractional horsepower motor , oil filled and hermetically sealed , designed to operate at 1,800 rpm , on a 120 - volt , single phase , AC power source and draw no more than 42 amps A Buna - N shaft seal shall prohibit the pumped fluid from entering the motor housing The pump body shall be constructed of aluminum and polypropylene and the motor casing shall be cast aluminum The impeller shall be of polypropylene plastic and affixed to a 304 - grade stainless steel shaft The sump pump will be “ clog - proof ” energy efficient design with built in thermal protection There shall also be included as an entering component of the pump , a built - in check valve on the discharge The sump pump shall operate within an approximately 35 - inch range turning on at approximately 5 - inches and off at approximately 25 - inches of depth in the sump Therefore , the sump pump will initiate a pumping cycle before the sump is filled The pump float shall operate by sliding up and down a fixed bar 210712 The sump pump discharge piping shall be size 1 ½ - inches schedule 80 PVC with solvent weld connections The discharge piping system will be complete with a union connection located on the upper and lower halves of the discharge line A PVC ball valve shall be installed on the discharge side of the check valve to enable maintenance of check valve without draining entire sump discharge line Pump shall discharge into wetwell approximately 12 - inches – 18 - inches from the top of the wet well 211 Power Loss Operation 2111 The pump station shall be equipped with either Standby Power meeting the requirements of Section 6 2112 Power Loss Operation capacity shall be sufficient to meet the FIRM capacity of the station as indicated on the permit 212 Trash Basket Grinder 2121 A type 304 stainless steel or aluminum trash basket shall be mounted on “ sliding ” rails which shall be anchored with stainless steel anchors into a separate manhole outside the wet well for circular wet wells For rectangular wet wells , the basket screen may be installed within the wetwell Basket shall be at least 18 - inches deep for 8 - inch sewers and 24 - inches deep for larger sewers Basket shall have maximum 2 - inch diameter openings and an open top A lifting bail and stainless - steel lifting drain shall be provided For baskets mounted in a separate manhole , the vertical drop between inlet and outlet sewer WASTEWATER PUMPING STATIONS SECTION 5 - 16 2022 RevisionPage7SECTION 5 – WASTEWATER PUMP STATIONS inverts shall be at least 15 - feet The manhole shall be factory epoxy coated as described in section 271 A Thern Model 5110 hoist shall be provided for basket removal Min 30ft lifting cable 2122 Grinders Pump stations – 200 GPM or greater in separate manhole outside the wet well 213 In - Channel Grinder greater than 120 GPM station 2131 Grinder also referred to as “ solids cutter ” shall be of two - shafted design consisting of individual cutters and spacers driven by hexagonal shafts The cutters shall actively grab and pull material into the stack for shredding Grinder shall have upper and lower end housings to retain shaft support bearings and seals Side rails shall provide structural rigidity while optimizing throughput and capture Grinder shall have a motor and speed reducer to drive the cutter shafts The equipment shall operate at low speed with a maximum cutter shaft speed of 60 rpm and shall be specifically designed for capturing and shredding wipes Cutting stack shall be of nominal height listed in Performance Requirements , and shall consist of interleaved cutters and spacers Cutters shall have 17 teeth , have a 0 438 ” nominal thickness , and have a wipes - ready design Cutters shall have radial serrations on the leading edges designed to perforate material as it passes between the cutter and adjacent spacer Spacers shall be 0446 ” nominal thickness Cutters and spacers shall be individual disks constructed of heat - treated alloy steel Spacers shall have a knurled outside diameter designed to aid in tearing of material as it passes through the cutter stack Cutter tooth height shall be not greater than ½ - inch above the root diameter of the cutter Cutter outside diameter shall not exceed a maximum 471 Cutter thickness tolerance shall be + 000 - 001 ” Spacer thickness tolerance shall be + 001 - 000 ” Clearance between any cutter tip and adjacent spacer shall be nominal 0015 ” 038 mm Cutters shall be heat treated to 45 - 53 HRc , and spacers shall be heat treated to 34 - 53 HRc Spacers shall have a smooth outside diameter Cutter to cutter clearance shall be a maximum of 0010 ” Shafts shall be hexagonal , 2 ” across flats Shafts shall be of heat treated 4140 alloy steel with a minimum tensile strength of 149,000 psi Shaft hardness shall be 38 - 42 Rockwell C Side rails shall be constructed of ASTM A536 ductile iron Cutter side rail shall have evenly spaced horizontal fingers Fingers shall be designed to create a pressure differential towards the center of the grinder , directing solids into the cutter stack , while at the same time minimizing overall pressure drop through the grinder WASTEWATER PUMPING STATIONS SECTION 5 - 17 2022 RevisionPage8SECTION 5 – WASTEWATER PUMP STATIONS Radial and axial loads shall be borne by sealed , oversized , deep groove ball bearings Shaft seal type shall be mechanical Each bearing and seal arrangement shall be incorporated into a cartridge - style housing Cutter shafts shall be supported on both ends Cantilever - style arrangements shall not be permitted Dynamic and rotating seal faces shall be Tungsten Carbide with 6 Nickel binder Seal cartridges shall be rated to a maximum pressure of 90 psi O - rings shall be of BUNA - N Seal cartridges shall not require flushing Seals shall be rated to operate wet or dry Housings and top cover shall be of ASTM A536 ductile iron Bottom cover shall be of A36 carbon steel End housings shall have integral bushing deflectors to guide solids away from seal cartridges Transfer gears shall be of involute profile and fabricated from heat treated alloy steel Transfer gear tooth design , thickness and hardness shall be suitable to transfer torque between shafts up to the rated breakdown torque of the motor The interface between transfer gears shall be factory lubricated with grease to minimize wear The transfer gear ratio shall be such that the ratio of cutter tip speed of the low - speed shaft to cutter tip speed of the high - speed shaft shall be greater than 090 and less than 100 to promote tearing of material as it passes through the cutter stack and at the same time facilitate cleanout of material from between the cutters Low speed coupling shall be a 3 - jaw type The 3 - jaw halves shall be of hardened 4140 alloy steel Each low - speed coupling half shall be encapsulated on its mating shaft to facilitate proper engagement of coupling lobes 1 16 ” – 1 8 ” The interface between low - speed coupling halves shall be factory lubricated with grease to minimize wear Speed reducer shall be manufactured by Sumitomo Machinery Corporation of America Speed reducer shall be a cycloidal type , with a speed reduction ratio shall be 29 1 Speed reducer shall be grease lubricated High Speed coupling shall be a 3 - jaw type with elastomer spider The 3 - jaw halves shall be of sintered iron The spider shall be of BUNA - N Motor shall be manufactured by Baldor Electric Company Motor shall have characteristics as listed in Performance Requirements Grinder shall be fitted with two 2 lifting rings 214 Odor Control – The County reserves the right to require on station 120 GPM or greater to be equipped with the liquid bioxide odor control system BIOXIDE VDLT Chemical Feed System Evoqua or equivalent that meets all WASTEWATER PUMPING STATIONS SECTION 5 - 18 2022 RevisionPage9SECTION 5 – WASTEWATER PUMP STATIONS containment and safety requirements The County requires a carbon filter order control system to be installed at all pump station locations situated within 500 ft of a residential or commercial property line 2141 Bioxide VLDT System A This section includes the fabrication , delivery , installation , and ® placement into successful operation of Bioxide chemical feed system complete with a VersaDose ® LT VDLT control system All materials shall be provided in accordance with these specifications B All components of the system shall be compatible with the conditions and chemicals to which they are subjected to during the normal operation of the system Compounds with which the materials must be compatible with include , but are not limited to 1 Hydrogen Sulfide ® 2 BIOXIDE solution 21411 MANUFACTURER AND QUALITY ASSURANCE A The system shall be provided by Evoqua Water Technologies LLC of Sarasota , Florida B The manufacturer of this equipment shall be one recognized and ® established in the design , production , and operation of Bioxide VDLT chemical feed systems The equipment shall be constructed and certified in accordance with appropriate specifications and standards C The manufacturer shall maintain regular production facilities at their place of business These facilities shall be open for inspection by a representative of the Owner or Engineer at any time during construction and testing of this equipment ® D The manufacturer of the Bioxide VDLT shall be an Underwriters Laboratories listed manufacturer of Enclosed Industrial Control Panels E All components of the feed system will be provided by a single manufacturer who shall have sole - source responsibility for the system F All equipment shall be furnished by a single manufacturer who shall be responsible for the coordination of the system design 21412 PROCESS DESCRIPTION ® The system shall provide for bulk storage of Bioxide and metering of ® the Bioxide from the bulk storage tank to the wastewater collection system The system shall contain controls as necessary to facilitate single discrete dosing profile 24 - hour setpoints that varies in 1 - hour WASTEWATER PUMPING STATIONS SECTION 5 - 19 2022 RevisionPage0SECTION 5 – WASTEWATER PUMP STATIONS increments in a stepping fashion over a 24 - hr period A calibration cylinder shall be permanently installed to facilitate calibration of feed ® pumps The VersaDose LT feed system is capable of reducing chemical usage by at least 10 versus typical 2 - timer systems by dosing more closely to the demand curve ® The Bioxide material shall utilize the inherent ability of the facultative bacteria normally present in wastewater to metabolize hydrogen sulfide and other odor - causing , reduced sulfur containing compounds The material shall provide nitrate - oxygen to the wastewater to support this biochemical mechanism This nitrate - oxygen shall be applied via nitrate salts The material shall be chemically stable , allowing continuous removal of sulfide contributed by side streams downstream of the application point ? The purchase of Bioxide Plus products from Evoqua constitutes an implied license to practice the processes described in United States ? Patents # 6,309,597 , # 7,087,172 and # 7,285,217 Bioxide is a registered trademark of Evoqua Water Technologies LLC 21413 SUBMITTAL A The manufacturer shall submit complete shop drawings and engineering data to the Owner or Engineer , upon request These submittals shall include , at a minimum 1 Drawings showing plan and elevation views of the feed system 2 Control system layout drawing 3 Control systems electrical diagram 4 Manufacture’s catalogue information on major system components including , but not limited to a Chemical Feed Pumps ® ® b Bioxide VersaDose LT Feed Controls c Liquid Storage Tanks d Operator Interface 5 Statement of design conditions and performance guarantee 6 Statement of warranty B Operation and maintenance manuals shall be provided by the Manufacturer prior to installation of all major equipment components These manuals shall include at a minimum 1 Information in hazards associated with the system and the appropriate safety precautions 2 All appropriate Material Safety Data Sheets 3 Equipment installation instructions 4 Equipment startup instructions 5 Equipment maintenance procedures 6 Troubleshooting guide WASTEWATER PUMPING STATIONS SECTION 5 - 20 2022 RevisionPage1SECTION 5 – WASTEWATER PUMP STATIONS 7 Individual operation and maintenance information on major system components , including but not limited to a Chemical Feed Pumps ® ® b Bioxide VersaDose LT Feed Controls c Liquid Storage Tanks d Operator Interface 21413 DELIVERY A Fabricated assemblies shall be shop assembled and properly matchmarked for ease of field erection B All components will be erected by the Contractor immediately upon receipt from the Manufacturer or stored in strict conformance with storage recommendations provided by the Manufacturer C Delivery shall be coordinated with the Contractor 21414 SUBSTITUTIONS Any substitutions or deviations in equipment or arrangement from that shown on the drawings specified herein shall be the responsibility of the Manufacturer or Contractor Any deviations must be accompanied by detailed structural , mechanical , electrical drawings and data for review by the Engineer All costs associated with review of the substitutions or deviations and costs associated with project drawing changes as a result of approval shall be borne by the Manufacturer or Contractor There shall be no additional costs to the Owner due to substitutions or deviations PART 1 – PRODUCTS 21 PRODUCT INFORMATION ® A Bioxide 1 Design Requirements a The material supplied shall be an aqueous solution of calcium nitrate containing a minimum of 35 pounds of nitrate - oxygen per gallon b The material shall be capable of reducing the dissolved hydrogen sulfide concentration in wastewater to less than 01 mg l c The material shall be free of any objectionable odor producing compounds WASTEWATER PUMPING STATIONS SECTION 5 - 21 2022 RevisionPage2SECTION 5 – WASTEWATER PUMP STATIONS d The pH of the material shall not be less than 40 or greater than 75 0 e The material shall have a freezing point less than – 10 F 2 Safety Requirements a The material shall not be listed as an Extremely Hazardous Substance under Section 302 of EPCRA , nor be listed as a CERCLA hazardous substance b The material shall be exempt from Federal DOT placard requirements c Recommended handling procedures for the material shall require protective gloves and safety glasses only Any material recommending more sophisticated equipment ie , face shield , body suit , etc during routine handling shall not be considered 22 COMPONENTS A Tank The chemical storage tank shall be constructed of Rotationally Molded High - Density Cross - linked Polyethylene HDXLPE No other material of construction shall be acceptable 1 Specifications The chemical storage tank shall be double wall , with the exterior tank having a nominal capacity no less than 110 of the interior tank The tank shall have the following capacity and approximate dimensions + - 5 Parameter Chemical Tanks Nominal Capacity 1,550 US gal Diameter 8’0 ” Height 6’11 ” Empty Weight 800 lb Specific Gravity 165 2 Manufacturing WASTEWATER PUMPING STATIONS SECTION 5 - 22 2022 RevisionPage3SECTION 5 – WASTEWATER PUMP STATIONS a Tanks shall be manufactured by the rotational molding process in accordance with ASTM D - 1998 Standard Specification for Polyethylene Upright Storage Tanks b Appearance Finished vessel walls shall be as free as commercially practicable of visual defects that will impair the serviceability of the vessel c Dimensions and Tolerance The vessel diameter shall be measured externally Measurement shall be taken in a vertical position 3 Material a Plastics The polyethylene shall preferably be virgin material Any use of regrind , recycled , or reprocessed materials or combinations of such materials shall not rely upon the performance data of their original constituents but must meet the requirements of this standard in its own right b Fillers and Pigments The plastic shall contain no fillers All plastic shall contain an ultraviolet stabilizer This stabilizer shall be compounded in the polyethylene Pigments must be compounded at the same time of resin manufacture 4 Fittings a Plastic Fittings Plastic fittings shall be “ bulk - head ” or “ two - flange ” style All bolts shall be all thread design Each bolt shall have a gasket , which is on the inside of the vessel b Openings that are cut in vessel to install fittings shall not have sharp corners Holes shall have minimum clearance to ensure the best performance of fittings c For all flanged connectors , the flange drilling and bolting shall be in accordance with ANSI ASME B - 165 B Process Feed System WASTEWATER PUMPING STATIONS SECTION 5 - 23 2022 RevisionPage4SECTION 5 – WASTEWATER PUMP STATIONS 1 General The operation of the Chemical Feed System shall be controlled from a Control Panel All equipment control switches , pilot lights , controllers , etc and the chemical feed pumps shall be housed in this panel 2 Enclosure The control panel enclosure shall be constructed of 316 stainless steel and shall be rated NEMA 4X It shall be equipped with a door with a continuous hinge The hinged door shall have two latches and shall be capable of locking via a padlock The enclosure shall be mounted on the control stand 3 Components The Control Panel shall contain the following 1 - Touch Screen Operator Interface with color display and integrated tank level indication 1 - HMI On Off Soft Switch for auxiliary equipment 2 - HMI Off Auto Soft Switches for pump control 1 - Set of Contacts with surge arrestor to accept Tank Level device 1 - Cellular Modem for remote communication 4 Controls Layout All manually operated controls control switches , pilot lights , etc shall be located on a panel behind the enclosure door The panel shall be outfitted with a main power disconnect located in the Calibration Stand 5 Standards All fabrication and wiring shall conform to the standards of Underwriters Laboratories , National Electrical Code , and any other applicable federal , state , or local codes 6 System Operation Chemical Feed Pumps The bellows pump shall be controlled by a two - position OFF AUTO switch The control system shall utilize 24 discrete dosing set points one setpoint for each hour of the day The same 24 discrete dosing setpoint is then repeated and used for each day of the week a When in the AUTO position , the pump shall be controlled by the advanced dosing controller The advanced dosing controller shall vary the feed rate in 1 - hour increments as specified by the user The pumps shall be turned on and off by the advanced dosing controller to match the specified dose curve b System shall automatically calculate the dose with either one pump or two pumps activated and the specified volume of product c If the tank level is in alarm condition empty , low or high relay contacts shall be energized WASTEWATER PUMPING STATIONS SECTION 5 - 24 2022 RevisionPage5SECTION 5 – WASTEWATER PUMP STATIONS d Automatic functions shall be protected by one - level security e The chemical dosing scheme shall be a stepping function from any given hour to another f Daily chemical dosing curve shall also be adjustable by a global setting to increase the feed rate percentage across all 24 daily set points g System shall have selectable High - Low - Empty digital output alarms and provide for remote customer lockout contacts for remote customer shutdown h Feed pumps shall have the capability to be interlocked with the sewage pumps and shall have the capability to be automatically shutdown on empty tank alarm i System shall calculate be capable of providing alarms for leak detection 7 Control Stand Pump control box shall be mounted on a 316 stainless steel pedestal a Calibration Cylinder The stand shall house a calibration cylinder used to measure the chemical being injected into the system A 3 - way valve shall be located at the top and bottom of the calibration tube to facilitate flow measurement Access inside this pedestal shall be accomplished through a door located on the front of the pedestal Instructions for use of this cylinder shall be permanently affixed to the interior of the enclosure b Disconnect Switch A main power disconnect shall be located in the control stand C Pumps 1 General Provide Evoqua Water Technologies Bellows Pump s as shown on the following table Each pump shall include motor , base , sealed bearings , flexible coupling and check valve filters Quantity Model No Bellows Size Adjustable Flow Rate Max Discharge Range mL min Pressure psi 1 15907 - 001 10 ” 5 - 50 40 1 15907 - 001 15 ” 15 - 150 20 WASTEWATER PUMPING STATIONS SECTION 5 - 25 2022 RevisionPage6SECTION 5 – WASTEWATER PUMP STATIONS Quantity Model No Bellows Size Adjustable Flow Rate Max Discharge Range mL min Pressure psi 1 15907 - 002 10 ” 125 - 125 40 1 15907 - 002 15 ” 25 - 250 20 1 15908 - 001 10 ” 30 - 300 40 1 15908 - 001 15 ” 63 - 630 20 1 15908 - 002 10 ” 50 - 500 40 1 15908 - 002 15 ” 105 - 1,050 20 1 15908 - 003 10 ” 72 - 720 40 1 15908 - 003 15 ” 150 - 1,500 20 2 Performance Pump rates and maximum discharge pressures shall be in accordance with the table above a The pumps shall be self - priming capable of suction lifts , when dry , up to seven 7 feet , and with bellows full , they will prime up to twenty 20 feet b Flow rate of each pump shall be adjustable by a diameter of bellows , and b adjustment of stroke length A calibration cylinder and valves will be installed to calibrate the pump feed rates c Pump suction and discharge shall be 3 8 ID polypropylene barbed connection for T tubing A 1 - 1 2 wye strainer will be installed 3 Construction Material Reference Material Bellows Polypropylene ® Poppet valves EPT ® O - rings EPT Springs Hastelloy C 4 Motors Motor shall be totally enclosed 115 - volt , 60 Hz , 0034 HP , single - phase and shall be rated for continuous duty D Piping & Appurtenances 1 All suction and discharge piping shall be standard ½ ” , Schedule 80 PVC All valves , fittings , and connectors shall be Schedule 80 PVC WASTEWATER PUMPING STATIONS SECTION 5 - 26 2022 RevisionPage7SECTION 5 – WASTEWATER PUMP STATIONS 2 All fill line piping shall be 2 Schedule 80 PVC All fill line valves , fittings , and connectors shall be Schedule 80 PVC 3 Fill line shall have a 2 stainless steel male camlock with a 2 plastic female camlock cap 4 All chemical feed seals shall be compatible with the chemicals to be used in the regular operation , maintenance , and cleaning of the feed system 5 All fittings shall be solvent - welded or threaded 6 Contractor must install chemical feed discharge lines so that the product is injecting directly into the waste streams and not onto structures or equipment E Level Indication The manufacturer shall provide one pressure transducing tank level indicator The system shall utilize a pressure sensing device to measure the tank liquid level The system shall contain 3 adjustable relays to allow for alarms and other electrical uses as well as one 4 – 20 mA output PART 2 – EXECUTION 31 INSTALLATION The system shall be installed in accordance with the manufacturer’s instructions All installation personnel shall be trained and qualified in the areas of plumbing , electrical work , and instrumentation as required to complete the installation 32 SITE AND UTILITIES The completed system , tanks , and other appurtenances shall be located on a foundation as shown in drawing The following utilities shall be provided at the feed system site and located as shown on the drawing and as indicated in the approved project proposal Site preparation and utility service , are not provided by the Manufacturer under these specifications A Electrical One 120 VAC , 60 Hz , 15 - amp single - phase electrical service shall be required B Drain - A minimum 2 - inch PVC gravity pad drain to sewer is recommended C Concrete Foundation WASTEWATER PUMPING STATIONS SECTION 5 - 27 2022 RevisionPage8SECTION 5 – WASTEWATER PUMP STATIONS D All trenching excavation and backfill 33 EQUIPMENT SHOP TESTING ® Before shipping the Bioxide VDLT Chemical Feed System , the Manufacturer shall perform shop tests These tests shall include at a minimum A Visual inspection of all equipment B Complete assembly , start - up , and “ wet - test ” of feed pumps and calibration piping 34 STARTUP AND TRAINING A The manufacturing of chemical feed system shall furnish a factory - trained representative for not less than 7 days for the feed systems supplied The days shall not necessarily be consecutive ; however , the times shall be mutually agreed upon by the manufacturer , Contractor , and Owner B A day shall be considered as 8 hours The factory - trained representative shall perform the following 1 Check the installation and put each piece of equipment into initial service 2 Train and instruct the operating personnel in the proper operation of the equipment and in the proper maintenance of the equipment 35 FIELD TESTS A The performance of the system shall be in accordance with the terms of the process description in section 13 of Part 1 of this document B If required , Manufacturer shall make any changes to the system , at his own expense , that may be necessary to assure satisfactory and efficient operation of this system PART 3 - WARRANTY The Manufacturer shall guarantee that the system will perform as described in these Specifications The Manufacturer shall warrant the system , complete , to be free from defects in materials or workmanship for a period twelve 12 months from acceptance or eighteen 18 months from shipment , whichever occurs first The Manufacturer shall repair or provide replacement for any defective components under this warranty In addition , the chemical storage tanks shall be warranted for a period of five 5 years from warranty start date WASTEWATER PUMPING STATIONS SECTION 5 - 28 2022 RevisionPage9SECTION 5 – WASTEWATER PUMP STATIONS Carbon Filter Unit Specs for all stations without Bioxide Systems Carbon Filter Unit Specs The Whisper ® 48 shall be equipped with a carbon absorber vessel , carbon media , carbon media supports , blower , and electrical control panel , enabling the system to remove a minimum of 990 of inlet hydrogen sulfide concentration 1 EQUIPMENT SCOPE The following equipment and services are included in our scope of work The Evoqua Whisper ® system is completely pre - assembled , pre - wired , and shipped as a single package All equipment is designed to be installed in a non - hazardous area No Description Quantity 1 Air Exhaust Fan w Motor 1 2 Fan Outlet Vessel Inlet Transition 1 Whisper ® 48 Carbon Adsorber Vessel , including 3 1 Vessel Skid • Odor Control Media • Carbon Media Supports • Removable Top , Drain • Inlet , Mid - bed , and Outlet Sample Ports • All Carbon Adsorber Vessel Connecting Hardware nuts , bolts , gaskets • 4a MIDAS ® OCM Carbon Media 630 lbs 4b VoCarb P60 Carbon Media 660 lbs Electrical Control Panel , Skid Mounted , FRP Construction , NEMA 4X , Including 5 1 One 1 On - Off Switch and status light for exhaust fan • One 1 VFD for adjustable speed control of exhaust fan • 6 Neoprene Pad to be installed underneath the vessel Included 7 Anchor Bolts Included Operation Manuals Copies 8 2 9 Manufacturer Start - up & Installs Services , which shall consist of two 2 days AND Included ONE TRIP , at eight 8 hours per day , to jobsite This includes Evoqua installlng the last 5ft of straight line Sin ducting , the 6in ducting reducer at the blower , and install of the carbon media 2 SITE , UTILITIES AND CUSTOMER REQUIREMENTS Provide perform , all facets of system installation including , but not limited to dewatering , concrete work , trenching , Bin schedule 80PVC ducting to within 5ft of the system blower , excavation , backfill , piping and electrical The County shall provide all equipment for site preparation and equipment off - loading Only those items specifically listed in this proposal are included ; all WASTEWATER PUMPING STATIONS SECTION 5 - 29 2022 RevisionPage0SECTION 5 – WASTEWATER PUMP STATIONS other items are specifically excluded 480V , 3Phase , 1 0amp Electrical Service Required for System Operation Additionally , the County shall be required to supply the following for each odor control s