EQ-24-0150 Spec 240517.pdf

TECHNICAL SPECIFICATIONS

Green Base Work Center Office

Wastewater System

Williams, AZ

April 2024

Prepared by:

Josh Sommer, PE

QA/QC by:

Amy Deitchler, PE

Coconino County Community Development Environmental Quality

By: ____________________________ Date: 05/17/2024

APPROVED

TABLE OF CONTENTS

DIVISION 33 – UTILITIES

Division Title 33 1600 Underground Wastewater Tank 33 3000 Sanitary Sewerage Utilities

DIVISION 44 – POLLUTION CONTROL EQUIPMENT

Section Title 44 4100 Wastewater Equipment

Green Base Work Center Office 331600 - 1 UNDERGROUND WASTEWATER TANK

SECTION 331600

UNDERGROUND WASTEWATER TANK

PART 1 - GENERAL

1.01 SECTION INCLUDES

A. Underground Wastewater Tanks:

1.02 RELATED SECTIONS

A. Section 312000 – Earth Moving B. Section 033000 – Cast-in-Place Concrete

1.03 REFERENCES

A. Underground Tank

1. American Concrete Institute (ACI) standard ACI 318, Building Code Requirements for Structural Concrete.

2. ANSI/AWWA D120 - Thermosetting Fiberglass-Reinforced Plastic Tanks.

3. IAPMO/ANSI Z1000 - Prefabricated Septic Tanks.

4. Tank manufacturer shall be recognized by Underwriters Laboratories as a manufacturer of tanks listed to the UL-1316 standard

1.04 SUBMITTALS

A. Product Data: Submit manufacturer's data sheets on each product to be used, including, but not limited to, the following

1. Preparation instructions and recommendations.

2. Storage and handling requirements and recommendations.

3. Installation manual and operating guidelines

B. Shop Drawings: Tank manufacturer shall submit the following for review and approval prior to fabrication of the tanks

1. Detailed shop drawings of each tank complete with all accessories supplied by the manufacturer.

2. Detailed shipping, handling and installation instructions

1.05 QUALITY ASSURANCE

A. Tank Installations

1. Regulatory Requirements: Comply with applicable requirements of the laws, codes, ordinances, and regulations of Federal, State, and local authorities having jurisdiction.

1.06 DELIVERY, STORAGE, AND HANDLING

A. General: Comply with tank manufacturer's Installation and Operating Guidelines recommendations for delivery, storage, and tank handling

1.07 WARRANTY

A. Warranty: Provide manufacturer's standard limited warranty

PART 2 - PRODUCTS

2.01 MANUFACTURERS:

A. Tank Installations

1. Acceptable Manufacturer: Xerxes Corporation or equal

Green Base Work Center Office 331600 - 2 UNDERGROUND WASTEWATER TANK

2.02 UNDERGROUND WASTEWATER TANK

A. Tank Design - Fiberglass reinforced plastic (FRP) tank

1. The tank size, fittings and accessories shall be as shown on the drawings.

2. Tank shall be manufactured with structural ribs which are fabricated as in integral part of the tank wall.

3. Tank shall be manufactured with a laminate consisting of resin and glass fiber reinforcement only. No sand/silica fillers or resin extenders shall be used.

4. Tank shall be vented to atmospheric pressure.

5. Tank shall be capable of handling liquids with specific gravity up to 1.1

6. Tank shall be compatible with liquids identified in the manufacturer's standard limited warranty.

B. Loading Conditions - Tank shall meet the following design criteria:

1. Internal Load - Tank shall be designed to withstand a 5-psig (35 kPa) air-pressure test with a 5:1 safety factor.

2. Surface Loads - Tank shall be designed to withstand surface H-20 and HS-20 axle loads when properly installed according to manufacturer's current Installation Manual and Operating Guidelines.

3. External Hydrostatic Pressure - Tank shall be designed for 7 feet (2.1 m) of overburden over the top of the tank, the hole fully flooded, and a safety factor of 5:1 against general buckling.

C. Onsite Wastewater Storage Applications

1. Governing Standards, as applicable

a. ANSI/AWWA D120 - Thermosetting Fiberglass-Reinforced Plastic Tanks.

b. American Concrete Institute (ACI) standard ACI 318, Building Code

Requirements for Structural Concrete.

c. IAPMO/ANSI Z1000 - Prefabricated Septic Tanks. Tank shall be

IAPMO/ANSI Z1000 listed and labeled.

d. Tank manufacturer shall be recognized by Underwriters Laboratories

(UL) as a manufacturer of tanks listed to the UL-1316 standard

2. Tank Design: Single-Wall vessel as specified and shown on the Drawings

3. Tank Accessories - Onsite Wastewater Storage Applications

a. Tank Anchoring

1) Anchor straps shall be as supplied by tank manufacturer and designed for a maximum load of 25,000 lbs (11340 kg).

2) Galvanized turnbuckles shall be supplied by the tank manufacturer.

3) Prefabricated concrete anchors shall be supplied by the tank manufacturer, designed to the ACI 318 standard, manufactured with 4,000 psi concrete and shall have adjustable anchor points

b. Access Openings

1) All access openings shall have a diameter of 24 inches or 30 inches (610 mm or 762 mm), complete with riser, lid and necessary hardware

c. Attached Access Risers

1) Attached access risers shall be PVC or FRP as supplied by tank manufacturer.

2) Attached access risers shall be a 24 inches or 30 inches (610 mm or 762 mm) diameter

3) Access risers shall be attached to access openings during installation utilizing adhesive or FRP bonding kits as supplied by the tank manufacturer.

d. Piping and Fittings

Green Base Work Center Office 331600 - 3 UNDERGROUND WASTEWATER TANK

1) Tank shall be equipped with factory-installed threaded fittings, or pipe stubs.

2) PVC piping shall at a minimum meet the requirements of ANSI Schedule 40.

3) All flanged nozzles shall be flanged and flat-faced, and conform to Class 150 bolting patterns as specified in ANSI/ASME/ B16.5.

4) Carbon steel and stainless steel NPT fittings shall withstand a minimum of 150 foot-pounds (203 NM) of torque and 1,000 foot-pounds (1356 NM) of bending, both with a 2:1 safety factor

e. Manway Openings

1) The standard manway shall be flanged and complete with gaskets, bolts and cover.

2) Manway openings shall be designed to withstand 5-psig (35 kPa) test pressure with a 5:1 safety factor

f. Baffles

1) Baffles and Partitions shall be capable of withstanding hydrostatic loads occurring when one compartment is empty and the remaining compartment(s) is full.

2.03 TANK BACKFILL MATERIALS

A. Do not utilize native on site materials for backfilling the tank excavation.

B. Use coarse aggregate rounded stone (ranging in size from 1/8” to ¾”) or crushed stone

(ranging in size from 1/8” to 1/2”) C. Backfill material shall be a mix of well-graded tones, generally conforming to the 6, 67, 7 and 8 sizes of ASTM C33.

D. No more than 5% of the backfill material shall be small enough to pass through the #8 sieve E. Do not use materials consisting of soft limestone, sandstone or shale.

2.04 GEOTEXTILE

A. At a minimum separation fabric shall have the following properties:

Mechanical Properties Test Method Unit MARV

Grab Tensile Strength (MD/CD) ASTM D 4632 lbs/ft 315 Grab Tensile Elongation ASTM D 4632 % 15

Trapezoidal Tear Strength ASTM D 4533 lbs 120 Mullen Burst Strength ASTM D 3786 psi 600

Puncture Strength ASTM D 4833 lbs 145 CBR Puncture Strength ASTM D 6241 lbs 1200

Apparent Opening Size (AOS) ASTM D 4751 U.S. Sieve 40 Permittivity ASTM D 4491 sec-1 0.05 Flow Rate ASTM D 4491 gal/min/ft2 4

UV Resistance (at 500 hours) ASTM D 4355 % strength retained 70

PART 3 - EXECUTION

3.01 TESTING

A. Tank shall be tested according to the tank manufacturer's Installation Manual and Operating Guidelines in effect at time of installation as summarized below.

1. Seal off the influent and effluent piping and any fittings that are below the tank top with a watertight caps or plugs.

Green Base Work Center Office 331600 - 4 UNDERGROUND WASTEWATER TANK

2. Fill the tank with water to a level that is 3 inches into the access opening after the tank excavation is backfilled at least 75% of the way up the tank.

3. Let the water stand in the tank for a minimum of 1 hour.

4. If the water level drops by a measurable amount, check to see that plugs or caps sealing off the piping are tight. Then add more water to fill air voids and return the water level back to the standard testing level and retest the tank.

5. If the water level does not stabilize, contact the plant from which the tank was shipped for instructions on how to proceed.

3.02 INSTALLATION

A. Tank shall be installed according to the tank manufacturer's Installation Manual and Operating Guidelines in effect at time of installation

END OF SECTION

Green Base Work Center Office 333000 - 1 SANITARY SEWERAGE UTILITIES

SECTION 333000

SANITARY SEWERAGE UTILITIES

PART 1 - GENERAL

1.01 DESCRIPTION

A. Furnish and install sewer pipe, drip field tubing, and fittings including manholes, service lines and other appurtenant structures as specified in the Contract and this section. Pipe strength classifications are shown on the plans, listed in the Contract Documents or specified herein.

B. Related Sections:

1. Section 312333 – Trenching and Backfill

1.02 CERTIFICATION BY MANUFACATURER

A. Furnish a manufacturer’s certification for all pipe and fittings, certifying that the pipe and fittings meet the contract requirements.

1.03 REFERENCES

ASTM C443 O-Ring Rubber Gaskets ASTM C478 Precast Reinforced Concrete Manhole Sections ASTM D1784 Rigid Polyvinyl Chloride Compounds ASTM D2241 PVC Pressure Pipe ASTM D3034 Polyvinyl Chloride Sewer Pipe and Fittings ASTM F679 Large Diameter PVC Pipe

PART 2 - PRODUCTS

2.01 GENERAL

A. Furnish sewer pipe and fittings as specified in the Contract Documents and meeting the materials and testing requirements of this Section. Furnish wye or tee branches and service line piping of the same material and design as the sewer pipe unless specified otherwise. Pipe strength classifications are shown on the plans and/or are listed in the Contract Documents.

B. References made to ASTM, ANSI or AASHTO designation are the latest revision at the time of call for bids.

C. Assure all pipe is clearly marked with type, class and/or thickness as applicable. Assure lettering is legible and permanent under normal conditions of handling and storage.

D. Furnish the joint type, class, thickness designation, castings, lining, marking, testing, etc.

as specified.

2.02 SEWER PIPE MATERIALS

A. Polyvinyl Chloride (PVC) Pipe

1. General

a. Furnish PVC pipe produced by a continuous extrusion process, employ-ing a prime grade of un-plasticized polyvinyl chloride. Assure the grade used is highly resistant to hydrogen sulfide, sulfuric acid, gasoline, oil, detergents and other chemicals found in sewage and industrial wastes.

Assure the material meets “Rigid Polyvinyl Chloride compounds”, ASTM Designation D-1784 requirements. Assure the pipe has self-extinguishing flammability characteristics.

2. Gravity Sewer Service Pipe

a. Furnish gravity sewer service pipe meeting the following requirements:

1) ASTM D-1785, “Standard Specifications for Polyvinyl Chloride Plastic Pipe”, Schedule 40

3. Gravity Flow Pipe Jointing

a. Furnish each pipe length with a bell designed to provide a watertight joint when jointing the bell and spigot with a rubber ring.

b. Make a rubber gasket joint for PVC pipe and fittings using a rubber gas-ket compressed between the outer surface of the spigot and the inner

Green Base Work Center Office 333000 - 2 SANITARY SEWERAGE UTILITIES surface of the bell. Assure the joint is completely sealed by the gasket so that the assembly remains watertight under all service conditions, in-cluding expansion, contraction, settlement and pipe deformation. Follow the manufacturer’s recommendations when assembling the rubber ring joint.

4. Pressure Flow Pipe Jointing

a. Pressure flow pipe shall utilize glued joints to provide a watertight sys-tem.

5. Fittings.

a. Assure wye or tee fittings for connection service lines are of the same material, construction and joint design as the sewer pipe.

B. Other Pipe Materials

1. Other pipe materials may be approved at the discretion of the Contracting Of-ficer.

2.03 DRIP FIELD TUBING

A. Furnish polyethylene drip field tubing with an outside diameter of 16 mm (0.63 in) and a wall thickness of 1.10 mm. The tubing shall be rated for a pressure range of 20 to 50 psi.

B. The drip field tubing shall include drip emitters spaced at 24 in apart.

C. The tubing shall have an antimicrobial lining to prevent biofilm build-up on the tubing interior.

D. The tubing shall be treated with an herbicide to protect the tubing from root intrusion.

E. Drip field tubing shall be “Geoflow – WaterflowPro with PC emitters” or equal.

2.04 MANHOLES

A. General

1. Construct manholes from precast concrete sections having frames, covers, and steps meeting details on Construction Plans.

B. Precast Concrete Sections

1. Furnish manholes meeting ASTM C478; “Precast Reinforced Concrete Manhole

Sections”, specifically including mandatory rejection requirements.

C. Steps

1. Furnish non-corrosive steps, 12-inches (30 cm) in width, of 1/2-inch (13 mm) steel rod encased with polypropylene. Assure steps withstand 400 pound (180

kg) vertical loads and 1,000 pound (450 kg) pull-out resistance.

D. Frames and Covers

1. Furnish cast iron frames and covers. Furnish 2-hole type covers unless specified otherwise.

E. Concrete Base

1. Furnish precast concrete bases or field poured on undisturbed earth. Use con-crete meeting Section 033000; CAST-IN-PLACE CONCRETE (SITE).

PART 3 - EXECUTION

3.01 PIPE AND SERVICE LINE INSTALLATION

A. Excavation and Backfill

1. Perform pipeline excavation and backfill meeting the applicable requirements of

Section 312333 ; TRENCHING AND BACKFILLING.

B. Responsibility for Material

1. Replace all material found defective in manufacture or damaged in handling after delivery. This includes furnishing all material and labor required for the replace-ment of installed material discovered defective before final acceptance of the work or during the guarantee period.

2. Contractor shall be responsible for the safe storage of material intended for the work until it has been incorporated into the completed project.

Green Base Work Center Office 333000 - 3 SANITARY SEWERAGE UTILITIES

C. Handling of Pipe

1. Deliver and distribute all pipe to the site. Load and unload pipe, fittings and ac-cessories by lifting with hoists or skidding to avoid shock or damage. Do not drop any materials. Do not roll or skid pipe handled on skidways against pipe already on the ground.

2. In distributing the material at the site of the work, unload each piece opposite or near the place where it is to be laid in the trench. Keep the interior of all pipe and other accessories free from dirt and foreign matter at all times.

3. Handle pipe to prevent damaging coating or lining. If any part of the coating or lining is damaged, make all repairs in a manner satisfactory to the Contracting Officer.

D. Laying Pipe

1. Lay and maintain all pipe to the specified lines and grades with fittings, tees and manholes at the required locations. Establish line and grade using batter boards and string line, laser equipment or other approved methods. When batter boards and string line are used, use a minimum of 3 batterboards at all times.

2. Install wye or tee fittings in the mainline sewer for service line connections. Fur-nish wye or tee fittings of the same material, design and specifications as the sewer main pipe. Joint service pipe to tee branches or main line pipe other than PVC using special joint adapters manufactured specifically for jointing the two types of pipe.

3. Use tools and equipment, satisfactory to the Contracting Officer, for the safe and convenient prosecution of the work. Carefully lower all pipe and fittings into the trench to prevent damage to pipe materials and protective coatings and linings.

Do not drop or dump any materials into the trench.

4. Take every precaution to prevent foreign material from entering the pipe while it is being installed. At times when pipe laying is not in progress, close the open ends of pipe using a plug or other means approved by the Contracting Officer.

Clean and remove all sand, gravel, concrete and cement grout that has entered the lines during construction.

E. Tolerances

1. Install the pipe within 1/2-inch (13 mm) of the specified alignment and within 1/4-inch (6 mm) of the specified grade.

3.02 DRIP FIELD TUBING

A. Install drip field tubing at a bury depth of 1 ft minimum as shown on the construction drawings and as recommended by the manufacturer.

3.03 MANHOLES

A. Construction

1. Construct manholes to the specified dimensions. Make invert channels smooth and semi circular in shape conforming to the inside of the adjacent sewer sec-tion. Make changes in flow direction with a smooth curve of as large a radius as the manhole size will permit. Make changes in channel grade and size gradually and evenly. The invert channels may be formed directly in the manhole base concrete or by laying half-pipe in the concrete. Make the floor of the manhole outside the channel smooth and slope toward the channel at one inch per foot (8 cm per meter).

2. Joint all connections between manhole walls and base and between wall sec-tions adjusting rings, and frame making the manhole watertight. For all horizontal joints, install a preformed, resilient, O-ring type, neoprene gasket in the joint. For all sewer pipe to manhole joints, use gasketed, flexible, watertight connections that will accommodate differential settlement. Acceptable options for these con-nections to the manhole are as follows:

a. Adjacent Joints: bell and spigot pipe joints with rubber sealing rings lo-cated within 12 inches (30 cm) of the manhole wall.

Green Base Work Center Office 333000 - 4 SANITARY SEWERAGE UTILITIES

b. Compression-Type Flexible Connector: a resilient, flexible connection, cast into manhole wall, providing 10 degrees deflection.

c. Boot-Type Flexible Connector: a flexible, watertight connection consist-ing of a rubber gasket or boot, metal expansion ring and a metal take-up clamp. Assure the expansion ring holds the gasket in the manhole wall, with the take-up clamp holding the gasket to the pipe.

d. Options (b) and (c) are limited to precast manhole base inverts and other installations where the flexibility of the connection is not compromised.

e. Construct manholes meeting ASTM C478, and the rejection criteria stat-ed therein.

f. Keep manhole construction within one manhole distant behind sewer pipeline construction.

3. Install adjusting rings on each manhole to bring the manhole top elevation to match the existing or specified ground elevations. Use manhole rings with a 2-inch minimum (5 cm) and 12-inch (30 cm) maximum height. Furnish adjusting rings reinforced with the same percentage of steel as the riser and top.

Green Base Work Center Office 444100 - 1 WASTEWATER EQUIPMENT

SECTION 444100

WASTEWATER EQUIPMENT

PART 1 - GENERAL

1.1 GENERAL DESCRIPTION

A. The treatment package shall be an Orenco AdvanTex treatment system, installed in accordance with the design plans and these specifications. The Manufacturer or Manufacturer’s Representative shall furnish a complete treatment package(s), consisting of treatment pods, recirculation pump assembly, discharge pump assembly, float switch assemblies, recirculating ball valve, tank risers/lids, UV disinfection system, controls, and ventilation fan.

1.2 SUBMITTALS

A. Manufacturer or Manufacturer’s Representative shall submit an electronic set of shop drawings and technical data sheets. The submittals shall clearly specify the materials of construction and equipment compatibility, along with drawings for each unique package being supplied.

1.3 OR-EQUAL EVALUTIONS

A. For this project, “approved equal” shall mean equal in the judgment of the Engineer, and the term “Engineer-approved equal” will therefore be used throughout this specification as defined in this section

1. Should the Bidder seek approval of a product other than the brand or brands named in the specifications, the Bidder shall furnish written evidence that such product conforms in all respects to the specified requirements and that it has been used successfully elsewhere under similar conditions. It will not be the responsibility of the Engineer to research, review, or determine equality, nor the responsibility of the Manufacturer, specified within these specifications, to provide research, documentation, or data supporting the difference between the “or-equal” product and the specified product. This will be the sole responsibility of any Bidder seeking the approval.

2. Where the specified requirements involve conformance to recognized codes or standards, the Bidder shall furnish evidence of such conformance in the form of test or inspection reports, prepared by a recognized agency, and bearing an authorized signature. Manufacturer’s standard data and catalog cut sheets will not be considered sufficient in themselves, and the Engineer will not be responsible for seeking further data from the Manufacturer or for otherwise researching the product. Failure to provide complete data will be cause for rejection of the product. The submission shall include any impacts that could be expected from the alternative product and shall also indicate any product that would require a license or royalty, the actual fees, and a note that these fees would be handled by the Bidder. The Bidder shall provide submissions meeting the above parameters no less than TWO WEEKS prior to Bid opening for review by the Engineer. Bidders seeking approval of “or-equal” products or systems shall provide, at minimum, the following information:

a. Product and system submittals, including, but not limited to, the number of years the Manufacturer has been in the business of manufacturing relevant products/systems.

b. Company size, including:

1) Number of employees related to relevant products/systems

2) Number of engineers on staff related to relevant products/systems

c. Product specifications and a detailed description of how each product or component is “equal” to the specified product, system, or component. A side-by-side comparison is required.

Green Base Work Center Office 444100 - 2 WASTEWATER EQUIPMENT

1) Equipment/system warranty along with exclusions

2) Performance claims, including, but not limited to:

a) Treatment design

• Surface area

• Maintenance frequency

b) Pump motor description

• Manufacturer and origin

• Length of service

• Number of units in operation

• Life-cycle cost (repair and replacement frequency)

• Warranty

c) Pump liquid-end description

• Manufacturer and origin

• Length of service

• Number of units in operation

• Life-cycle cost (repair and replacement frequency and cost). Note: liquid ends must be removeable, repairable, and cleanable.

• Warranty

d) Corrosion resistance

e) Pump lead description

• Lead must be extra-heavy-duty SOOW, 600V cord, CSA approved (PF7515 uses a 14AWG, SJOOW, 300V cord).

f) Control panel components

• Manufacturer and origin

• Length of service

• Number of units in operation

• Warranty

• Enclosure description

3) Evidence of successfully obtaining approval for a system with similar permit requirements with the regulating authority

4) Summary of product/system track record and history, including, but not limited to:

a) Number of similarly sized systems

b) Detailed summary of at minimum ten (10) similarly sized systems, at least five (5) years old, including, but not limited to:

• Project name, location, and application

• Years in operation

• Current average daily flows and design flows

• Operator name and contact information

3. Bidder shall specify and furnish documentation related to Manufacturer (or Manufacturer’s Representative) support services, including, but not limited to:

a. Installation training program and support material

b. Installation oversight program and support material

c. Operator training program and support material

d. Start-up services program and support material

4. Engineer is eligible for reimbursement for the evaluation of any “or approved equal” or substitute, including, but not limited to:

a. Installation training program and support material

b. Installation oversight program and support material

c. Operator training program and support material

d. Start-up services program and support material

Green Base Work Center Office 444100 - 3 WASTEWATER EQUIPMENT

1.4 EXPERIENCE CLAUSE

A. The equipment furnished shall be manufactured and supplied by a company experienced in the design and manufacture of advanced treatment systems. Manufacturer shall have a minimum ten (10) years’ experience in the design and manufacture of advanced treatment systems of similar size and equipment specified. Manufacturer shall have a minimum of twenty-five (25) successful installations of advanced treatment systems.

1.5 MANUFACTURER

A. The Manufacturer shall be “Orenco” or Engineer-approved equal. The Manufacturer shall furnish a complete, factory-built advanced treatment system(s), each consisting of treatment pods, recirculation pump assembly, discharge pump assembly, float switch assemblies, recirculating ball valve, tank risers/lids, UV disinfection system, controls, and ventilation fan. The Manufacturer shall supply detailed installation and O&M (operation and maintenance) instructions. The Manufacturer or Manufacturer’s Representative shall also provide the following support personnel:

1. Experienced support staff dedicated to supporting the project through design, construction, and O&M.

2. Asset management department dedicated to assisting operators with operational and maintenance activities.

1.6 WARRANTY

A. The Manufacturer of the advanced treatment system shall provide a three (3) year warranty for the entire treatment system, including, but not limited to, the pump, pump vault, float switch assembly, discharge assembly, control panel, splice box, and ventilation fan. Warranty term shall ensue from the date of installation. The Manufacturer shall submit detailed exclusions from the warranty or additional cost items required to maintain the equipment in warrantable condition. The warranty shall be documented in product literature.

1.7 SERVICEABILITY

A. The advanced treatment system components shall be completely serviceable with easy access to the pump(s), effluent screen, treatment system, and float switches. The pump shall be designed for removal without removing the effluent screen and float switches.

1.8 PUMPS

A. The pumps must be submersible high-head effluent pumps. Pumps shall be UL and CSA listed for use with effluent. The pumps shall have a 1/8in (3.2mm) bypass orifice to ensure flow circulation for motor cooling and to prevent air bind. The pumps shall have floating impeller or floating stack design to protect against up thrust and increase pump life. The pumps’ liquid ends must be repairable (by replacing impellers and/or diffusers) for better long-term cost of ownership. The motor must be rated for continuous use and frequent cycling, at least 100 cycles per day. The motor cable must be suitable for Class I, Division 1 and 2 applications. The pumps shall be lightweight for easy removal and maintenance. The pumps’ intake screens must be 1/8in (3.2mm) mesh polypropylene.

Pumps shall have internal thermal overload protection and internal lightning protection.

All pumps shall undergo 3-point (dead head, design flow, and design flow + 30%) wet testing at the factory to confirm performance.

1. AX20 Applications

a. The pump must be approved for use in the pump vault as described in these specifications. Pump shall be 1/2hp (0.37kW) to 1hp (0.75kW), 230VAC, single-phase, 60Hz, two-wire or three-wire motor, with 10-30ft (3-9m) long, extra-heavy-duty SOOW electrical cord with ground.

Green Base Work Center Office 444100 - 4 WASTEWATER EQUIPMENT

1.9 TANKS, FIBERGLASS

A. See Section 331600 Underground Wastewater Tank.

PART 2 - PRODUCTS

2.1 RISERS

A. The Manufacturer of risers shall be Orenco or equal. Risers shall be required for access to internal vaults and access into the tanks for septage pumping. All risers shall be constructed to be watertight. The risers shall be attached to the tanks such that a watertight seal is provided. Risers shall extend 3in (75mm) above finished grade to allow for settlement and to ensure positive drainage away from the access. Risers shall be a minimum of 30in (750mm) in nominal diameter when the depth of bury is 36in (914mm) or greater or duplex pumping assemblies are used. All other risers shall be a minimum of 24in (600mm) in nominal diameter and shall vary in height depending on the depth of bury of the various tanks. Adhesive required to adhere the polyvinyl chloride (PVC) or fiberglass risers to either fiberglass or ABS tank adapters shall be a two-component methacrylate structural adhesive or Engineer-approved equal. To ensure product compatibility, a single manufacturer shall supply risers, lids, and attachment components.

2.2 INLET AND RECIRCULATING SPLITTER/BALL VALVE RISERS

A. Inlet risers shall be purchased from Orenco or equal, constructed of fiber-reinforced polymer (FRP), or Engineer-approved equal. The risers shall be constructed of noncorrodible material and designed to be buried in soil. Risers shall be capable of withstanding a truck wheel load (54in2 or 0.03m2) of 2500lbs (1134kg) for 60min with a maximum vertical deflection of a 1/2in (13mm). Risers shall extend to 3in (75mm) above the finished ground surface to allow for settlement and shall have a minimum nominal diameter of 24in (600mm).

1. Grommets for inlet and outlet flanges: insert holes for FRP style splitter valve flanges, or grommets for old-style splitter valves shall be drilled/installed by the Manufacturer of the valve.

2.3 OUTLET RISERS

A. Outlet risers shall be purchased from Orenco or equal, constructed of FRP, or Engineer-approved equal. The risers shall be constructed of noncorrodible material and designed to be buried in soil. Risers shall be capable of withstanding a truck wheel load (54in2 or 0.03m2) of 2500lbs (1134kg) for 60min with a maximum vertical deflection of 1/2in (13mm). Risers shall have a minimum nominal diameter of 24in (600mm) for simplex pumping applications or 30in (750mm) when used in a duplex pumping application and shall be factory equipped with the following:

1. Electrical and discharge grommets: when applicable, Orenco ethylene propylene diene monomer (EPDM) grommets shall be installed by the Manufacturer for discharge piping, vent piping, and/or the electrical conduit to assure a watertight seal. The Manufacturer of the access risers shall install the grommets at the factory.

Green Base Work Center Office 444100 - 5 WASTEWATER EQUIPMENT

2.4 SECONDARY SAFETY BARRIER

A. All risers shall be equipped with an Orenco model RTS24 or RTS30 Tank Shield™ secondary safety barrier or Engineer-approved equal. Secondary safety barriers shall be constructed of co-polymer polypropylene and shall demonstrate supporting a 250lb (113kg) weight load.

2.5 RISER-TO-TANK ATTACHMENT

A. All attachment components shall be constructed of waterproof, noncorrodible materials, such as PVC, ABS, fiberglass, or stainless steel. Adhesives and sealants shall be waterproof, corrosion resistant, and approved for the intended application. The riser-to-tank connection shall be watertight and structurally sound. The riser-to-tank connection shall be capable of withstanding a vertical uplift of 5000lbs (2268kg) to prevent riser separation due to tank settlement, frost heave, or accidental vehicle traffic over the tank.

Risers shall be attached to tanks with one of the following Orenco attachment systems, or Engineer-approved equal:

1. Model PRTA24 tank adapter cast into tank lid or bolted to lid using Model

PRTA24BDKIT bolt down kit and a two-component methacrylate structural adhesive.

2. Model PRTA24-2 tank adapter cast into tank lid and a two-component methacrylate structural adhesive when tank burial depth is greater than 36in (914mm).

3. Model RRFTA30 tank adapter bolted to tank lid using RRFTA30BDKIT bolt down kit and a two-component methacrylate structural adhesive.

4. Model PRTA30 tank adapter cast into tank lid or bolted to tank using PRTA30BDKIT bolt down kit and a two-component methacrylate structural adhesive.

2.6 RISER LIDS

A. One lid shall be furnished with each access riser. Lids shall be an Orenco DuraFiber™ Model FLD24G or FLD30G, an Orenco FiberLast Model FLL24G, or Engineer-approved equal, as appropriate, made of fiberglass, and provided with stainless steel bolts. Lids shall be waterproof, corrosion resistant, and UV resistant. Lids shall be flat, with an allowable crown or dome of no more than 1/4in (6.4mm). Lids shall not allow water to pond on them. Lids shall have a nonskid finish. Self-lubricating plastics, such as polyethylene, shall not be considered nonskid without the addition of a nonskid coating.

Lids shall be capable of making a watertight seal with the top of the riser. Lids shall be rated for non-traffic loads up to 2500lbs (1134kg). Manufacturer shall be able to provide evidence that lid will withstand a 2500lb (1134kg) load applied over a 9in × 9in (229mm × 229mm) area for 30 minutes with no more than 3/4in (19mm) deflection, as well as demonstrating a one minute proof load of 5000lbs (2268kg) without permanent deformation. Lids shall have the option of stainless steel fasteners with a recessed hex drive and removal tool. Other components include the following:

1. Foam insulation: Rigid closed-cell foam insulation of 4in (100mm) thickness shall be attached to the underside of the lids. Any fasteners shall be made of corrosion-resistant stainless steel. The insulation shall have an R-value of no less than 10 (RSI 1.8) per 2in (50mm) increment.

2.7 RISER INSTALLATION

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A. Riser installation shall be accomplished according to the Manufacturer’s instructions. For cold weather areas, risers shall be backfilled with 3/8in (10mm) pea gravel or other similar granular material to prevent frost heave.

2.8 RECIRCULATION PUMP VAULT

A. Standard: PVU Series

Orenco Model PVU Series, Universal Biotube® Pump Vault or Engineer-approved equal, in-stalled according to the Engineer’s plans. The filter shall have a minimum effective screen ar-ea of no less than 19.7 square feet (1.8 square meters). The Biotube pump vault shall consist of a 12in (300mm) diameter polyethylene vault with eight (8) 2in (50mm) diameter holes evenly spaced around the perimeter, located appropriately to allow for maximum sludge and scum accumulation before requiring pumping (approximately 70% of minimum liquid level).

Housed inside the polyethylene vault shall be the Biotube assembly consisting of 1/8in (3.2mm) mesh polypropylene tubes. Attached to the vault is a flow inducer to accept one or two high-head effluent pumps.

2.9 DISCHARGE ASSEMBLY

A. PF50 Series Pump

1. Orenco Model HV200BSQ or Engineer-approved equal. Discharge assembly shall be 2in (50mm) diameter and include 150psi (10.3bar) PVC ball valve, Schedule 40 PVC check valve, PVC flex hose with working pressure rating of 60psi (4.1bar), and Schedule 40 PVC pipe with cam coupler adapter for quick disconnect.

B. Additional components include the following:

1. Drainback

a. In cold weather climates, a drainback style discharge assembly shall be that which includes a 1/8in (3mm) drainback orifice above the check valve. This valve style may be used with a cold weather kit.

2. Cold-weather kit

a. For cold weather climates and deep bury tanks, an Orenco Cold-

Weather Kit (HVCW) or Engineer-approved equal.

3. High-pressure flex hose

a. For PF30 Series Pump: Orenco Model HV125BCPR series or Engineer-approved equal. Shall be constructed of a special elastomer compound with a working pressure of 150psi (10.3bar).

2.10 FLOAT SWITCH ASSEMBLY

A. Float switches shall be mercury free Orenco Model MF3P with three normally open mechanical float switches mounted on a PVC stem attached to the pump vault. The float switches must be adjustable and must be removable without removing the pump vault.

The high level, timer override on/off, and low-level alarms shall be preset as shown in the Engineer’s plans. Each float switch lead shall be secured with a nylon strain relief bushing at the splice box. The float switches shall be UL or CSA listed.

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2.11 HIGH-HEAD EFFLUENT PUMPS

A. Simultaneous Two-Unit AX20 Dosing

1. All pumps shall comply with general requirements set forth in Part 1 (above).

Orenco Model PF5007 series or Engineer-approved equal 3/4hp (0.56kW), 230VAC, single-phase, 60Hz, two-wire or three-wire motor, with a 10-30ft (3-9m) long, extra-heavy-duty SOOW electrical cord with ground. Pump shall be UL and CSA listed as an effluent pump.

2.12 ELECTRICAL SPLICE BOX

A. Standard: External Splice Box

1. Orenco Model SBEX series external splice box or Engineer-approved equal, UL approved for wet locations, equipped with up to four (4) electrical cord grips and two 3/4in (19mm) outlet fittings. Also included shall be UL-listed waterproof splice connectors. The use of a UL-approved conduit seal kit accessible above ground shall be required to prevent the passage of gases, vapors, or flames through the conduit to the control panel. An additional UL-classified sealant shall be added to the splice box coupling to prevent condensation accumulation in the splice box.

The following UL approved sealants shall be used:

a. UL-classified moisture-cure polyurethane quick drying foam or Engineer-approved equal with an R-5 (RSI 0.9) rating for each inch of foam.

b. UL-classified silicone sealant or Engineer-approved equal consisting of a neutral-cure, non-acetic, noncorrosive silicone able to withstand temperatures up to 450°F (232°C).

2.13 RECIRCULATING SPLITTER/BALL VALVE

A. Recirculating Splitter/Ball Valve

1. Orenco Model RSV3U 3in (75mm) diameter splitter/ball valve assembly or

Engineer-approved equal to provide guaranteed return of treated effluent returning from filter. The ball valve must redirect 100% of flow to recirculation/blend tank during periods of low flow and 20% of return flow to final discharge and 80% to the recirculation/blend tank during periods of high flow.

Must be manufactured of corrosion-resistant PVC and rubber components and allow for easy removal using unions.

2.14 ADVANTEX TREATMENT SYSTEM

A. Orenco AX20 AdvanTex Treatment System shall be installed in conformance with the Engineer’s plans and Manufacturer’s guidelines. The AX20 is a packed-bed filter consisting of a proprietary textile media housed in a 7.6ft × 3.3ft × 2.6ft (2.3m × 1m × 0.8m) basin. The media has been specifically engineered for wastewater applications.

B. The treatment pod covers shall be insulated for cold weather operation as recommended by the manufacturer.

2.15 ADVANTEX VENTILATION SYSTEM

A. Orenco Model AXVFACF, AXVFA-Green, or AXVFACF-HT or Engineer-approved equal capable of meeting the following requirements:

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1. The vent fan shall be UL recognized, 0.08hp (0.06kW), 115/230V, 1.4A/0.7A, single-phase, 3400rpm and provide up to 245cfm at 0in (0mm) H2O.

2. Exhaust basin shall be 12in (305mm) in diameter. Basin shall be ribbed PVC as manufactured by Orenco or Engineer-approved equal. The material shall be PVC as per ASTM D-1784 and tested in accordance with AASHTO M304M-89.

B. Heater: Heater shall be a stainless steel Thermolec Model Thermo-Air Fresh Air Heater (120V/1000W/8.3A or 240V/1000W/4.2A) or Engineer-approved equal with a built-in electronic temperature controller and sensor, Model D21-TS. Heater will include an automatic reset thermal cut-out to prevent overheating. Heater is also to be equipped with an internal air flow and temperature sensor.

2.16 CONTROLS

A. Controls and alarms shall be listed per UL 508. Panels shall be repairable in the field without the use of soldering irons or need for substantial disassembly.

B. Control panel shall have SCADA capabilities which requires an Ethernet connection or cellular access with static IP addressing. Panel is required to allow real-time connectivity with the control panel web page and alarm communications. Phone dialers shall not be considered as an equivalent Engineer-approved equal.

C. Panel shall be covered by a 3-year warranty unless covered under a project-specific warranty provided by Orenco.

D. Panel shall be an Orenco TCOM, TCOM-XL™, or STCOM control panel or Engineer-approved equal, and shall be capable of the following:

1. Data collection and utilization: logs data for system conditions and events such as daily flows, pump run time, pump cycles, and alarm conditions. Logs shall store data for at least a year.

2. Downloadable logs: download logs into a *.dif or ASCII format for simple conversion to common spreadsheet or word processor programs.

3. Multi-level password security: only qualified personnel can remotely access site.

4. Programmed logic to meet the required functionality for a fully operational system and remote capable for changes and updates to firmware or programming.

5. Program rules to be written based on several operands, including the following:

a. Input/output status

b. Point status

c. Date: mm/dd/yy format

d. Time of day: 24-hour clock

e. Timers

f. Historical data (allows for control optimization or detection of trends)

6. Scheduling functions to control digital “points” based on date or day of week/time.

7. Automatic daylight savings time adjustment.

8. Email function with automatic call-out to at least 16 unique mailboxes.

9. Collecting data and detecting trends that could lead to system failure.

E. In addition, the unit shall have the capability of real-time direct connection to the panel via laptop serial port, to allow the operator real-time access to detailed logged data and the ability to change point values.

1. Standard components must include at a minimum:

a. Motor-start contactor: 18A, three-phase, 1-1.5hp (0.75-1.1kW), 50/60 Hz;

2.5 million cycles at FLA (5 million at 50% of FLA for 230VAC).

b. HOA 3-way toggle switches: single-pole switch, Hand (manual), Off, Auto (on).

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c. Controls circuit breaker: 10A, OFF/ON switch. Single-pole 120VAC. DIN rail mounting with thermal magnetic tripping characteristics.

d. Pump circuit breaker: 20A, OFF/ON switch. Single-pole for 120VAC or double-pole for 230VAC. DIN rail mounting with thermal magnetic tripping characteristics.

e. Audio alarm: 95dB at 24in (610mm), warble-tone sound.

f. Ground fault interrupter (GFI): 120VAC, 15A.

g. Current sensor: 24VDC, 4-20mA with adjustable high and low alarm set points.

h. Visual alarm: 22mm pushbutton with red lens, “push-to-silence.” Must maintain UL Type 4X rating, LED bulb, 115VAC.

i. Panel enclosure: UL Type 4X rated (NEMA rating not acceptable) constructed of UV-resistant fiberglass or UL Type 4 rated (NEMA rating not acceptable), constructed of steel; hinges and latch must be stainless steel.

j. Remote telemetry unit: TCOM or TCOM-XL telemetry controller; required for system input/output (I/O) to be fully supported plus 10% spare; self, 24VDC power supply for all calculated needs plus 25%; 16 digital I/O expandable as necessary; minimum 16 analog inputs expandable as necessary. On-board Ethernet port (10 base T, RJ45jack) and Modbus port (R5422/485 terminals). Non-volatile memory backup of programming, lithium battery backup of data and program settings for a minimum of 1 year without power.

k. Local touchscreen display: must connect to the controller via Ethernet, bright 16-bit colors, high definition TFT analog resistance touchscreen, 32-bit RISC CPU, 400MHz with 128M Flash DRAM, 10.1in (257mm); or Engineer-approved equal.

l. Industrial Ethernet switch: managed with at least 5 ports, 10/100 Base-T, 10-30VDC power input.

m. Surge arrestor: Type 1 surge protective device, rated for 36kA per phase, UL listed.

n. Anti-condensation heater: Must be self-adjusting or thermostat controlled, wattage as required to maintain minimum temperature inside the panel to prevent condensation.

o. A wiring diagram of the system shall be included on the inside door of the control panel.

2. Standard components listed do not preclude any other necessary items. At a minimum, all components required to maintain system operation must be provided for a fully functional control panel.

2.17 CONTROL PANEL LOCATION

A. The pump control panel shall be mounted on an exterior backboard/wall or inside a control building nearest the tank and pumps. If panel is mounted to an exterior wall, it is best to mount it on a garage or outbuilding where the sound of the motor contactor engaging will not be noticed. If a garage or outbuilding wall isn’t available, installation should include use of sound-deadening insulation. (Post and panel mounting assemblies are acceptable.) The control panel shall be located within 50ft (15m) and in sight of the pump motor, or it shall be provided with a lockable disconnect switch. The panel, when possible, should be mounted in the shade and protected from the weather. The panel should be located at a convenient height (usually about 5ft or 1.5m above the ground) and where it will be accessible for maintenance.

2.18 UV DISINFECTION SYSTEM

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A. The UV disinfection units shall be installed in a gravity flow contact chamber. The units shall have no chemical use or moving parts. A Teflon sleeve shall be provided to protect the lamps and minimize buildup.

B. A quick-disconnect fitting shall be provided to allow for easy unit removal for inspection and cleaning.

C. The units shall include a power ballast and a lamp current sensor, housed in a control panel. The control panel shall be installed near the AdvanTex treatment system control panel and shall be an Orenco UVIB or equal. The following shall be provided integrally with the control panel to provide notification of system failure or low lamp transmittance.

1. Audio alarm: 95dB at 24in (610mm), warble-tone sound.

2. Visual alarm: 22mm pushbutton with red lens, “push-to-silence.” Must maintain

UL Type 4X rating, LED bulb, 115VAC.

D. UV disinfection units shall be Orenco Model UV-125/31 or equal.

PART 3 - EXECUTION

3.1 PRECONSTRUCTION CONFERENCE

A. Before any work at the site is started, a conference attended by the Owner, Contractor, Engineer, Manufacturer or Manufacturer’s Representative, Operator, and others, as appropriate, will be held to establish a working understanding among the parties as to the work involved for installing each component of the treatment system. At this conference, the Owner, Contractor, Engineer, and Manufacturer or Manufacturer’s Representative shall designate, in writing, a specific individual to act as Inspector for the installation of the treatment system. Any cost or fees associated with the services of the Inspector or the Engineer during construction will be the responsibility of the Owner.

3.2 INSTALLATION AND FIELD TESTING TRAINING

A. All treatment, pumping system, UV disinfection and electrical components shall be installed in accordance with the Manufacturer’s recommendations and instructions, the Engineer’s plans, and all state and local regulations.

B. The Manufacturer or Manufacturer’s Representative shall provide the services of a trained representative to instruct the installing Contractor’s crew and Inspector regarding the proper installation and field testing of each component per the Manufacturer’s recommendations and requirements for a minimum of one (1) eight-hour day at the beginning of construction

3.3 QUALITY CONTROL

A. The Manufacturer or Manufacturer’s Representative shall provide the services of a trained representative for a minimum of one (1) eight-hour day for the purpose of quality control during construction.

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B. To ensure quality control, the Inspector shall inspect and certify that an initial installation of the AdvanTex system complies with the Manufacturer’s recommendations and requirements.

C. Upon completion of the inspection, the Inspector, in coordination with the Engineer, shall perform or direct the Contractor to perform any required adjustments to the equipment and place it into operation under the supervision of the Engineer. All equipment and materials required to perform the testing shall be the responsibility of the Contractor. A letter of completion shall be signed by the Inspector and copies shall be faxed, emailed, or mailed to the Engineer and Manufacturer within one (1) week of the AdvanTex system being installed and prior to system commissioning.

3.4 SYSTEM COMMISSIONING

A. The Manufacturer or Manufacturer’s Representative shall provide the services of a trained representative for training the Owner’s service provider and inspecting the AdvanTex installation. The inspection will include items covered from the installation training.

B. Upon request, the Manufacturer or Manufacturer’s Representative shall provide the services of a trained representative for a minimum of one (1) eight-hour day for the purpose of system commissioning.

C. Upon system commissioning, the Manufacturer’s or Manufacturer’s Representative’s trained representative shall provide the Engineer a written report of findings. The Engineer shall then perform or direct the Contractor to perform any required adjustments to the equipment and place it into operation. All equipment and materials required to perform additional testing shall be the responsibility of the Contractor. The Manufacturer shall submit to the Engineer and Owner a detailed start-up checklist according to the Manufacturer’s inspection and start-up procedures.

PART 4 - OPERATION AND MAINTENANCE

4.1 OPERATION AND MAINTENANCE

A. The Manufacturer shall provide three (3) operation and maintenance manuals: two (2) to be sent to the Owner, and one (1) to be sent to the Engineer. Alternatively, an electronic version can be provided.

B. During the first full year of operation, the Owner shall provide all testing results and a list of maintenance activities monthly to the Manufacturer. The Manufacturer shall review results and provide feedback on operating parameters, equipment performance, and maintenance activities.

C. At the end of the first year of operation, if requested by the Owner, the Manufacturer or Manufacturer’s Representative shall commit to a site visit to assess equipment integrity and…