Ukiah City Council
November 19, 2025

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-10 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (CONFORMED) d. Valves shall have an adjustable spring range to match existing. Valves shall be factory adjusted for the backpressure recommended by the pump manufacturer.
e. Valves shall produce a back pressure no greater than 10 pounds per square inch above valve set pressure when metering pumps are operating at full capacity, pulsating flow.

D. Additional accessories:

1. Additional accessories required for the system but not required to be supplied by the pump manufacturer include:
a. Isolation valves as specified in Section 15111 - Ball Valves for suction and discharge piping as indicated on the Drawings.

2.09 NAMEPLATES
A. Each pump, gearbox, and motor shall have, securely affixed in a conspicuous location, a stainless steel nameplate with raised letters providing the manufacturer’s model, serial number, rating, range, speed and other pertinent data.

2.10 SPARE PARTS AND SPECIAL TOOLS
A. Spare parts: Furnish the following spare parts packed and labeled for warehouse storage:

1. Complete set of inlet and outlet ball check valves (balls, seats and gaskets) and a diaphragm for each pump.

2. 1 complete spare parts kit for each pump provided.

3. An initial supply of all oils, greases, and lubricants required to start operations.

Supply an amount of these materials equivalent to 1 year of continuous operation for each system.

B. Special tools: Deliver 1 set for each furnished pump type and size needed to assemble and disassemble pump system.

PART 3 EXECUTION

3.01 COMMISSIONING
A. As specified in Section 01756 - Commissioning and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 1 day minimum.
b. Functional Testing: 1 trip,1 day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 1 sessions.
b. Operation: 2 hours per session, 21 sessions.

Liquid Chemical Diaphragm-Type Metering Pumps General
11242-11 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11242 (CONFORMED)

4. Process operational period:
a. As required by Owner or Contractor.

C. Source testing: As specified in Pump Schedule.

D. Functional testing: As specified in Pump Schedule.

3.02 SCHEDULES
A. Pumps:

Tag Number PMP-85183
Feed Point AWT Packaged Filter/Clarifiers No. 1 to No. 4 Service Ferric Chloride
Pump Type Single Diaphragm
Number of Pumps 1
Named Manufacturer Prominent
Pump Characteristics
Design Conditions:

Maximum Flow, (gallons per hour) 20.4
Pump Stroke Range (strokes per hour) 144
Source Testing
Test Witnessing Not Witnessed
Performance Test Level 1
Vibration Test Level None
Noise Test Level None
Functional Testing
Performance Test Level 1
Vibration Test Level 1
Noise Test Level 1

1. Provide pumps that deliver the maximum capacity, listed in the above table, when at full speed and maximum stroke length.

END OF SECTION

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED) SECTION 11294B

HEAVY-DUTY FABRICATED STAINLESS STEEL SLIDE GATES
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Heavy-duty fabricated stainless steel slide gates.

1. Gate Schedule is included in the Drawings.

B. As specified in Section 01600 - Product Requirements.

1.02 REFERENCES
A. American Water Works Association (AWWA):

1. C561 - Fabricated Stainless Steel Slide Gates.

B. American Welding Society (AWS):

1. D1.6 - Structural Welding Code-Stainless Steel.

C. ASTM International (ASTM):

1. A276 - Standard Specification for Stainless Steel Bars and Shapes.

2. B584 - Standard Specifications for Copper Alloy Sand Castings for General Application.

3. D1248 - Standard Specification for Polyurethane Plastics Extrusion Materials for Wire and Cable.

4. D2000 - Standard Classification for Rubber Products in Automotive Applications.

5. D4020 - Standard Specification for Ultra-High Molecular-Weight Polyethylene Molding and Extrusion Materials.

1.03 DEFINITIONS
A. Design Head: Depth from surface of water to centerline of gate. Use value specified in the gate schedule.

B. Seating Head: Pressure applied to gate slide from weight of water column above gate centerline that forces gate slide into seat.

C. Slenderness Ratio (l/r): The largest ratio obtained by dividing the unsupported length of the stem by the radius of gyration of the stem cross section.

D. Substantially Similar:

1. Similar in size, design head, and service.

2. Utilizes the proposed design for critical components including guides and seals.

E. Unseating Head: Pressure applied to gate slide from weight of water column above gate centerline that forces gate slide away from seat.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED)

1.04 SUBMITTALS
A. Submit as specified in Section 01330- Submittal Procedures.

B. Product data: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

C. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

D. Calculations: As specified in 15050 - Common Work Results for Mechanical Equipment:

1. Calculations and design data substantiating conformance with the Drawings and specifications.

2. For coordination purposes, gate manufacturer shall supply calculations verifying the suitability of the selected operator for the application. a. For all gates:
1) The maximum torque required for operation of the gate (including breakaway from seat) with a safety factor of 1.4.
2) Indicate thrust value and stem factor.
b. For manually operated gates coordinate with Section 13446 - Manual Actuators.

3. Gate opening and closing thrust forces that will be transmitted to the support structure with operator at extreme positions and load.

4. Breakaway torque from seat. Indicate thrust value and stem factor.

5. Guide frame in accordance with AWWA C561 stress threshold compliance for exterior guide leg and fasteners.

6. Anchorage calculations in accordance with Section 15050 - Common Work Results for Mechanical Equipment.

E. Shop drawings:

1. Layout and installation drawings for each gate size and type.

2. Wall thimbles design.

3. Complete bill of materials.

F. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

G. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

2. Leakage test results.

H. Manufacturer's installation instructions.

1.05 QUALITY ASSURANCE
A. Manufacturer qualifications:

1. Minimum 10 years of experience in production of fabricated stainless steel slide gates substantially similar to the equipment specified.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED)

2. Submit evidence of satisfactory operation in at least 20 different installations in the United States using the proposed guides and seals design.

3. Multiple gates at a plant shall be considered as one installation toward meeting the experience requirements.

B. Manufacturer's shop welds, welding procedures, and welders: Qualified and certified in accordance with the requirements of AWS D1.6.

C. Factory markings:

1. Mark gates according to the scheduled equipment tag numbers when such numbers are used.

2. For thimbles, frames, and other non-interchangeable components, match mark the entire system.

D. Assembled gates: Shop inspected, adjusted, and tested before shipment.

1.06 WARRANTY
A. Provide warranty as specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 MANUFACTURERS
A. Manufacturers: One of the following or equal.

1. H. Fontaine, Series 20.

2. Whipps, Inc., Series 900.

3. Waterman Industries, SS-250.

4. Rodney Hunt, Series A-113 or A-114.

5. Hydro Gate, Model HG-561.

6. RW Gate, Model RW1000-S.

B. Operator anchor bolts and wall thimbles: Provided by manufacturer of slide gates.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Maximum allowable leakage shall be 0.10 gallons per minute per foot of sealing perimeter, the allowable limits set forth in AWWA C561. Leakage testing shall be conducted in accordance with AWWA C561.

B. Except as modified or supplemented as specified in this Section, all gates and operators shall conform to the requirements of AWWA C561, latest edition.

C. Gate components:

1. Frames:
a. Design for the design head scheduled with a minimum safety factor of 5 with regard to ultimate tensile, compressive, and shear strength. b. Self-contained gates: Where frames extend above the operating floor, design to be self-supporting so that no further reinforcing or support is required.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED)

2. Stem: Select stem diameter, stem guide quantity and stem guide spacing based on following criteria:
a. Slenderness ratio (l/r): Shall not exceed 200.
b. Maximum diameter: Provide stem guides at a spacing to maintain stem diameter of 2 inches or less.
c. Tensile strength: Suitable to withstand the force generated by the operator with the application of a 200-pound force applied to the crank or handwheel or a 250-foot-pound torque applied to the wrench nut. d. Compressive strength:
1) Suitable to withstand buckling due to the force generated by the operator with the application of an 80-pound force applied to the crank or handwheel or a 100-foot-pound torque applied to the wrench nut.
2) Determine buckling load using Euler Column formula in accordance with AWWA C561, where C = 2.
e. Design force for power actuators:
1) Hydraulic cylinder operators: 1.25 times the output thrust at maximum hydraulic fluid operating pressure.
2) Electric motor operators: 1.25 times the output thrust in the stalled-motor condition.
f. Gates having widths greater than 2 times the height: Provide with 2 lifting mechanisms connected by a tandem shaft.

3. Thrust nut: Suitable to withstand thrust developed by operator with the application of a 40-pound force on the crank or handwheel with safety factor of 5. Base design on ultimate strength of material used.

4. Yokes for self-contained gates:
a. Design yoke using design loading criteria for stem with safety factor of 5 based on the ultimate strength of the material used.
b. Maximum deflection at design load: Not to exceed 1/360th of the span.

5. Slide:
a. Deflection shall be less than or equal to 1/1000 of the span of the gate or 1/16 inch, whichever is less, under the design head.
b. Design for the maximum design head specified with a minimum safety factor of 5 with regard to ultimate tensile, compressive, and shear strength.

2.03 MATERIALS
A. Stainless steel: ASTM A276, Type 304:

1. Components or structural shapes which are welded: ASTM A276, Type 304L. a. Manufacturer's shop welds, welding procedures, and welders:
1) Qualified and certified in accordance with the requirements of AWS D1.6.

2. All wetted and unwetted parts including all fasteners and hardware, except as specified in this Section, shall be stainless steel.

B. Ultra-high molecular weight polyethylene: ASTM D1248 and D4020, virgin materials only.

C. Neoprene: ASTM D2000, Grade 2 BC 510.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED) D. Manganese bronze: ASTM B584, UNS Number C86500 or Alloy 432.

E. Silicon bronze: ASTM B584 UNS Number C87300.

2.04 COMPONENTS
A. Slide:

1. Type 304L stainless steel.

2. Rectangular or square.

3. Fabricated with a flat plate reinforced with formed plates or structural members.

B. Frame:

1. Construct gate frame of Type 304L stainless steel structural members or formed plate welded to form a rigid 1-piece frame.
a. Capable of providing true dimensions within tolerances and preventing binding and excessive wear of sliding parts.

2. Mounting: As indicated on the Drawings and Slide Gate Schedule. a. Centerline of anchors shall be located no closer than 4-1/2 inches from the edge of concrete opening for face-mounted gates.

3. Adjustable ultra-high molecular weight polyethylene pressure pads.

4. Flush bottom type unless otherwise indicated on the Drawings.

5. Allow replacement of top, side, and bottom seals without removing the gate frame from concrete or wall thimble.

6. Machine surfaces matching with thimble. Provide seal between gate frame and thimble that will meet leakage performance requirements.

7. Embedded gates: Extend frame to provide access to pressure pad adjusting screws (For seal design alternatives A and B only).

C. Yoke for self-contained gates:

1. Type 304L stainless steel.

2. Extend guides and frame so that bottom of yoke is at least 12 inches above top of slide at full open position.

3. Bolt or weld to frame.

4. Provide mounting plate on top of yoke to mount operator.

5. Design yoke to allow removal of gate slide.

D. Guides:

1. Type 304L stainless steel with ultra-high molecular weight polyethylene insert in contact with gate.

2. Minimum face width of 1 inch.

3. Length: To support the slide fully in the open position.

4. Anchor bolts shall not pass through the guides and seals.

E. Seals:

1. Designed to achieve the specified leakage requirements.

2. Sealing and sliding surfaces shall provide a low coefficient of friction with the surface of the slide.

3. Field replaceable without removing gate from concrete or wall thimble.

4. Anchor bolts shall not pass through the guides and seals.

5. J-bulb seals are not acceptable.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED)

6. Minimum seating surface width: 3/4 inch in contact with slide.

7. Bottom seal:
a. Resilient neoprene, minimum durometer of 45.
b. Attached to the bottom of the slide or embedded in gate frame invert. c. Compressed by closing action of gate slide against plate for all standard upward opening gates.

8. Side and top seals:
a. Provide one of the seal design alternatives listed below. b. Seal design alternative A:
1) UHMWPE fixed sealing surfaces that surround the clear opening. 2) Held in place in the guide with Type 304 stainless steel fasteners. 3) Seal compression shall be maintained by UHMWPE field adjustable pressure pads mounted to the slide with Type 304 stainless steel fasteners.
c. Seal design alternative B:
1) Neoprene crown seal with UHMWPE bearing bars.
2) Attached to the slide with Type 304 stainless steel fasteners. 3) Crown seal shall be actuated by water pressure in either the seating or unseating direction.
4) Primary contact with the slide shall be through the UHMWPE bearing bar. The neoprene shall not be solely relied upon for the contact seal. 5) Seal compression may be maintained by UHMWPE field adjustable pressure pads mounted to the guide with Type 304 stainless steel fasteners.
d. Seal design alternative C:
1) UHMWPE self-adjusting type seals: Utilize a continuous compression cord to ensure contact between the seals and the slide. a) An O-ring is not acceptable in lieu of compression cord. 2) Side seals:
a) Attach to frame using one of the following approaches. (1) Held in place between the front and back angles of the guide with Type 316 stainless steel bolts passing through the guide and seal along the length of the guide.
(2) Held in place between front and back of a formed, 1 piece, rigid channel guide. Attach seals to frame using Type 316 stainless steel bolts.
b) Design and installation shall provide access to and removal of the bolt to allow removal of the side seal without removing the gate from the concrete.
3) Top Seal: UHMWPE self-adjusting type seal with double compression cord.

9. Provide invert seal for all downward (weir) gates.

10. Set seals to be slightly compressed with slide in closed position.

F. Stem:

1. Type 304 stainless steel.

2. Machine cut or rolled full depth ACME threads.

3. Diameter: Capable of withstanding anticipated opening and closing thrusts under head as indicated on the Drawings. Minimum stem diameter: 1-1/2 inch at the threads.

4. Length: Capable of permitting easy installation and removal.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-7 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED)

5. Stem couplings:
a. Silicon bronze or Type 304 stainless steel.
b. Threaded and keyed to stem or threaded and bolted to stem.

6. Stem guides:
a. Type 304 stainless steel.
b. Split collar.
c. Adjustable in 2 directions.
d. Ultra-high molecular weight polyethylene bushing.

7. Provide manganese bronze stop collar on stem above actuator.

8. Drill and connect stem to slide structural sections with Type 304 stainless steel bolts.

9. Coordinate the selection of the gate stem configuration with the gate operator and operating speed.
a. The selected gate stem configuration shall provide the most efficient combination of stem diameter/pitch/lead and keep the operating temperature at the stem nut to a minimum during operation. b. For motorized applications, if the proposed gate stem configuration would result in any deviation from the operating rise rate specified in Section 13447 - Electric Actuators, submit proposed deviation for approval by the Engineer.

G. Operating nut:

1. Locate at operator level.

2. Material: Manganese bronze.

H. Gate operators: As scheduled and specified in Section 13446 - Manual Actuators.

1. Provide cranks and gears necessary to bring operator to height specified, or typical operator height of 3 feet 6 inches if not otherwise shown.

I. Bolts, nuts, and fittings: Type 304 stainless steel.

J. Anchor bolts: Type 316 stainless steel of sufficient quantity and length to anchor the gate.

1. Quantity, size, and location of anchor bolts shall be determined by the gate manufacturer in accordance with requirements of Section 15050 - Common Work Results for Mechanical Equipment.

2.05 WALL THIMBLES
A. Provide wall thimbles for gates where scheduled and as indicated on the Drawings.

B. F-section of a depth equal to the thickness of the structure wall upon which the gate is mounted.

1. Modify F-sections where required for F-section and pipe bell ring connections in a wall.
a. Provide flange-by-mechanical joint or flange by push on joint wall thimble where ductile iron piping connects to the wall thimble. Ensure that joint wall thimble has sufficient embedment to resist pipe thrust. b. Provide flange-by-bell ring wall thimble insert where reinforced concrete piping connects to the wall thimble.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-8 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED) C. Fabricated Type 304L stainless steel of sufficient section to resist permanent distortion; minimum 3/8-inch-thick plate.

D. Width of mounting flange of wall thimble: 1/2 inch wider than mounting flange of gate.

E. Fully machine front flange of thimble to a plane Drill and tap to match the drilling on the flange back gate seat.

F. Clearly mark top center of each thimble for installation.

G. Provide Type 304 stainless steel studs for attaching the gate frame.

H. Seal joint between thimble and gate watertight, in accordance with AWWA C561.

I. To permit entrapped air to escape as the thimble is being cast in concrete, drill holes in each entrapment zone formed by ribs, flanges, and water stops.

J. Provide annular weep ring to control seepage and resist thrust, where needed to anchor the pipe thrust restraint system.

1. Continuously weld weep ring to outside of the wall thimble.

2. Weep ring shall be minimum 1/4 inch thick and minimum 2 inches deep.

2.06 FINISHES
A. Stainless steel:

1. Surface preparation of gates and stop plates after fabrication to remove weld splatter and to polish scratches:
a. Shot blast.

2. Clean the entire surface to produce an even color and sheen.

B. Operators, stands, and other accessory equipment: Surface preparation, factory prime, field prime, and finish coats as specified in Section 09960 - High-Performance Coatings.

2.07 FABRICATION
A. Shop assembly:

1. Gates shall be factory assembled, adjusted, and tested.

2. Mount all accessories and appurtenances including, but not limited to, motor operators and limit switches so that the complete system may be tested at the factory.

PART 3 EXECUTION

3.01 EXAMINATION
A. Inspect all components for shipping damage, conformance to specifications, and proper torques and tightness of fasteners, as specified in Section 15050 - Common Work Results for Mechanical Equipment.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-9 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED)

3.02 INSTALLATION
A. Install equipment as indicated on the Drawings and as specified in Section 15050 - Common Work Results for Mechanical Equipment and the manufacturer's written installation instructions.

B. Mount thimbles and gates plumb in both vertical planes and level in horizontal plane.

C. Coat seating surfaces between frame and wall thimble with a waterproof plastic compound or provide EPDM gasket prior to tightening frame studs.

D. Adjust wedges or other parts of the gate to the point where it will not be possible to insert a 0.004 inch feeler gauge between the gate slide and the gate frame at any point.

1. Securely lock wedges into position after adjustment.

E. Adjust limit switches in electric and hydraulic operators in accordance with manufacturer's instructions.

F. Face mounted gates:

1. Where wall thimbles are not provided, mount gate to wall with anchor bolts and provide a 1-inch grout pad in accordance with manufacturer’s recommendations.

G. Embedded gates:

1. Provide blockouts in sidewalls and channel bottom for installation of gates.

2. After gate placement, adjustment, and alignment in accordance with manufacturer’s recommendations, grout frame with non-shrink grout.

3.03 COMMISSIONING
A. As specified in Section 01756 - Commissioning and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 1 day minimum.
b. Functional Testing: 1 trip, 1 day minimum each.

3. Training:
a. Maintenance: 2 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

4. Process operational period:
a. As required by Owner or Contractor.

C. Functional testing:

1. Test witnessing: Witnessed.

2. After gate installation and checking, run gates through at least 2 full cycles from the closed position to full open position and back to the closed position.

Heavy-Duty Fabricated Stainless Steel Slide Gates
11294B-10 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11294B (CONFORMED)

3. Leakage tests:
a. Conduct in accordance with AWWA C561. Comply with specified allowable leakage limits.

3.04 GATE SCHEDULE
A. The Gate Schedule is indicated on the Drawings.

B. Gate Schedule is not a take-off list.

1. Contractor shall provide gates specified and as indicated on the Drawings.

END OF SECTION

Vertical Turbine Short Setting Centrifugal Pumps
11312D-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) SECTION 11312D

VERTICAL TURBINE SHORT SETTING CENTRIFUGAL PUMPS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes:

1. Pump systems including vertical turbine pumps with radial, mixed flow, or axial (propeller) type impellers and drivers as scheduled.

B. Tag numbers: As specified in Pump Schedule.

1.02 REFERENCES
A. American Bearing Manufacturers Association (ABMA):

1. 9 - Load Ratings and Fatigue Life for Ball Bearings.

2. 11 - Load Ratings and Fatigue Life for Roller Bearings.

B. American Society of Mechanical Engineers (ASME):

1. B16.1 - Cast Iron Pipe Flanges and Flanged Fittings, Class 25, 125, and 250.

2. B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through 24.

3. PTC 8.2 - Centrifugal Pumps.

C. American Water Works Association (AWWA):

1. C205 - Standard for Cement-Mortar Protective Lining and Coating for Steel Water Pipe, 4 In. (100 mm) and Larger-Shop Applied.

D. ASTM International (ASTM):

1. A48 - Standard Specification for Gray Iron Castings.

2. A53 - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.

3. A108 - Standard Specification for Steel Bars, Carbon and Alloy, Cold-Finished.

4. A276 - Standard Specification for Stainless Steel Bars and Shapes.

5. A278 - Standard Specification for Gray Iron Castings for Pressure-Containing Parts for Temperatures Up to 650°F (350°C).

6. A283 - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates.

7. A516- Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate-and Lower-Temperature Service.

8. A582 - Standard Specification for Free-Machining Stainless Steel Bars.

9. A743 - Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application.

10. B30 - Standard Specification for Copper Alloys in Ingot Form.

11. B505 - Standard Specification for Copper Alloy Continuous Castings.

12. B584 - Standard Specification for Copper Alloy Sand Castings for General Applications.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED)

13. F593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs.

14. F594 - Standard Specification for Stainless Steel Nuts.

E. Hydraulic Institute (HI):

1. 9.1-9.5 - Pumps - General Guidelines for Types, Definitions, Application, Sound Measurement and Decontamination.

2. 14.1-14.2 – Rotodynamic Pumps for Nomenclature and Definitions.

3. 14.3 - Rotodynamic Pumps for Design and Application.

4. 14.4 - Rotodynamic Pumps for Installation Operation and Maintenance.

5. 14.6 - Rotodynamic Pumps for Hydraulic Performance Acceptance Tests.

1.03 DEFINITIONS
A. Pump head (total dynamic head, TDH), flow capacity, pump efficiency, net positive suction head available (NPSHa), and net positive suction head required (NPSHr):

As defined in HI 9.1-9.5, 14.1-14.2, 14.3, 14.4, and 14.6 and as modified in the Specifications. The pump head and efficiency are evaluated at the outlet of the discharge head and include the net losses in the pump column and discharge head, and intake basket or strainer (when specified).

B. Flow, head, efficiency, and motor horsepower specified in this Section are minimums unless stated otherwise.

C. Suction head: Gauge pressure available at pump intake flange or bell in feet of fluid above atmospheric.

D. Tolerances: This Section and related sections contain tolerances that may be more stringent than Hydraulic Institute Standard tolerances. Where tolerances are not mentioned, Hydraulic Institute Standards 9.1-9.5, 14.1-14.2, 14.3, and 14.4 shall apply.

E. Allowable Operating Region (AOR): The region over which the service life of the pump is not seriously compromised by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

F. Preferred Operating Region (POR): The region over which the service life of the pump will not be significantly affected by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

1.04 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Vibration analysis: Submit as specified in Section 15050 - Common Work Results for Mechanical Equipment when scheduled.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) C. Product data: As specified in Section 15050 - Common Work Results for Mechanical Equipment:
a. Pump certification as specified in Section 01600 - Product Requirements. b. Weighted average lead calculations as specified in Section 01600 - Product Requirements.

D. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

E. Calculations: As specified in Section 15050 - Common Work Results for Mechanical Equipment:

1. Torsional analysis: Submit as specified in Section 15050 - Common Work Results for Mechanical Equipment when scheduled.

F. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

G. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.05 QUALITY ASSURANCE
A. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

B. Provide pumps specified in this Section from same manufacturer.

C. Vibration analysis: Provide equipment vibration analysis as specified in this Section.

1. Vibration analysis level: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.

2. Vibration analysis expert: Provide when scheduled.

D. Manufacture’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.06 WARRANTY
A. As specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 MANUFACTURERS
A. One of the following or equal:

1. Flowserve; model as scheduled.

2. Sulzer/Johnston Pumps; similar to scheduled model.

3. Peerless Pump; similar to scheduled model.

4. Weir/Floway; similar to scheduled model.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED)

5. National Pump Co.; similar to scheduled model.

6. Cascade Pump Company; similar to scheduled model.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Components: Pumps, drivers, motors, variable frequency drives, and drive arrangements as specified or as scheduled with shafts, columns, barrels, intermediate bearings, seals or packing, couplings, base plates, guards, supports, anchor bolts, necessary valves, gauges, taps, lifting eyes, stands, and other items as required for a complete and operational system.

B. Design requirements:

1. Pump performance characteristics:
a. As specified in the Pump Schedule.
b. All required conditions (flow/head) shall be within the pump manufacturer’s Allowable Operating Range (AOR).
c. Performance tolerances shall be the same as the test tolerances specified in Section 15958 - Mechanical Equipment Testing.
d. Pump curve shall be continuously rising throughout the design conditions listed in the pump schedule.

2. Motor characteristics: As specified in the Pump Schedule.

C. Product requirements as specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

2.03 MATERIALS
A. General:

1. Pump Schedule materials: As specified in this Section.

B. Cast iron: ASTM A48, Class 30 minimum.

C. Nickel cast iron: ASTM A48, minimum Class 30, cast iron with 3 percent nickel.

D. Gray iron casting: ASTM A278, Class 30.

E. Iron-chromium alloy: ASTM A743, Grade CA40; ASTM A276, Type 420 Stainless Steel may be substituted; Brinell Hardness Number of 350 to 380.

F. Lead-free bronze except for bearings that require lead for lubricity: ASTM B584.

G. Leaded tin bronze: ASTM B505, Alloy C92700.

H. Bronze or high lead tin bronze: ASTM B584, Alloy 93800.

I. Leaded red brass: ASTM B584, Alloy C83600, leaded red brass.

J. Type 416 stainless: ASTM A582, Type 416 Stainless Steel.

K. Neoprene: Polychloroprene rubber.

L. Steel: ASTM A283, Grade D or ASTM A516 Gr. 70.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) M. Steel pipe: ASTM A53, Grade B.

N. Aluminum bronze meeting the requirements of Section 15050 - Common Work Results for Mechanical Equipment.

O. Lead-free aluminum bronze: ASTM B30.

2.04 GENERAL PUMP CONSTRUCTION
A. Type: Industrial, heavy duty, vertical turbine, centrifugal type pumps meeting performance requirements and features as scheduled and as specified.

B. Discharge flange: ASME B16.1 or B16.5 drilled; rated for 1.2 times the pump shutoff head at 150 degrees Fahrenheit.

C. Discharge nozzles: Provide 1/2-inch NPT taps for pressure gauges; install nipple and gauge with block valve.

D. Bearings:

1. Design driver/motor bearings to support the line shaft assembly and rated for ABMA L10 life of 40,000 hours at Design Rated Point flow and head in accordance with ABMA 9 or ABMA 11.

2. Design motor to withstand continuous duty full load thrust and momentary up thrust that may occur during pump on/off or other operations.

E. Fasteners: Provide Type 316 stainless steel fasteners in accordance with ASTM F593 or ASTM F594.

2.05 PUMP SUCTION ASSEMBLY
A. Pump suction assembly: Provide suction bell. Provide anti-vortex baffles and strainer when scheduled.

B. Design suction bells and provide strainers and anti-vortex baffles to minimize solids plugging and vortexing. Screens to have a flow area at least 4 times the suction pipe area.

C. Materials:

1. Pump suction bell: As scheduled.

2. Anti-vortex baffles: Same material as scheduled for pump suction bell.

3. Pump suction bell bearing: As scheduled.

4. Pump suction strainer: When strainer scheduled, provide Type 316 stainless steel.

2.06 PUMP IMPELLER BOWL ASSEMBLIES
A. Pump impeller assembly:

1. Type: As scheduled.

2. Maximum number of vanes: As scheduled.

3. Number of stages: As scheduled.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED)

4. Required balance: As specified in Section 15050 - Common Work Results for Mechanical Equipment to meet vibration criteria as specified in Section 15958 - Mechanical Equipment Testing.

5. Method of securing impellers to shafts: Keyed and secured by a bronze nut locked in place or locked by other methods acceptable to the Engineer.

Provide any special tools required for removal and installation of pump impellers.

6. Provisions for adjustment of axial clearance: Make such adjustment through use of motor adjusting nut or adjustable coupling.

7. Impeller thrust: When appropriate for the specified impeller type, provide hydraulically balanced impeller to minimize down thrust.

B. Intermediate and discharge impeller cases:

1. Material: As scheduled.

2. Attached with bolting.

C. Pump impeller bowl bearings: Provide bearing for each impeller; material as scheduled.

D. Diffusion vanes: Provide vanes cast into bowl.

E. Suction bowl bearings:

1. Provide bronze sleeved bearings with self-contained lubrication system filled with graphite type non-soluble grease when grease lubrication scheduled; provide bearing with sand cap.

F. Design with smooth water passages to reduce clogging by stringy or fibrous materials on impellers or shafting.

G. Design replaceable wear rings for both the bowl and impeller on each impeller bowl.

H. Design capable of passing solids with a sphere size as scheduled or larger.

I. Design impellers capable of working on pumps that may be abnormally started against closed manual valve or normally against a closed pump control valve.

2.07 LINE SHAFTS
A. Provide line shaft type and lubrication type as scheduled and as specified in this Section.

B. Open line shaft, product lubricated:

1. Shaft and couplings:
a. Provide keyed shaft type mechanical couplings with key or set screw locking of shaft couplings.
1) Threaded shaft connections are not allowed.

2. Bearings and bearing retainers: Provide bearings and retainers spaced as scheduled, but not to exceed 10 feet; provide at least 1 bearing for each line shaft length; provide grease fitting for top bearing extended to outside any guards when grease lubrication specified.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-7 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED)

3. Materials:
a. Shaft and couplings: As scheduled; where hard faced steel shaft is specified, hard face at sleeve bearings to 550 Brinell minimum. b. Bearings and bearing retainers: As scheduled; when not scheduled, Neoprene rubber bearings with bronze retainers.

C. Enclosed line shaft, oil lubricated:

1. Shaft and couplings: Provide flanged shaft couplings with key or set screw locking of shaft couplings.

2. Shaft bearings and spiders: Provide bearings and retainers as scheduled, but not to exceed 10 feet and enclosing tube spiders spaced at 30 feet maximum; provide oil reservoir volume for 3 days continuous use.

3. Enclosing tube: Pipe, thickness as scheduled.

4. Materials: As scheduled; when not scheduled provide:
a. Shaft and couplings: ASTM A108, Grade 1045 steel with ASTM A276, Type 316 hardened stainless steel journal or sleeve at each bearing. b. Shaft bearings and spiders: ASTM B584, Alloy C83600 leaded red brass bearings; Neoprene rubber spider on enclosing tube.
c. Enclosing tube: Steel pipe, ASTM A53, Grade B unless scheduled otherwise.

D. Design strength: Able to withstand minimum 1.5 times maximum operating torque and other loads.

E. Resonant frequency: As specified in Sections 15050 - Common Work Results for Mechanical Equipment and 15958 - Mechanical Equipment Testing.

F. Sleeves: Provide shafting with Type 316 stainless steel sleeve or hardened sleeves where shafts pass through bearings or stuffing boxes as scheduled; Brinell 550 or higher for hardened shaft; when the specified mechanical seals cannot be installed on a hardened shaft, hardened shafts are not required in the area of the mechanical seal.

G. Design pump line shafting in interchangeable lengths as scheduled, but not to exceed 10 feet; shaft lengths to match scheduled pump column lengths.

H. Coupling strength: Design driver to pump line shaft coupling of sufficient length and strength to maintain line shaft alignment.

I. Adjustment:

1. Design a means to adjust shaft position to adjust impeller position.

2. For motor driven units with solid shaft motors, design driver to pump line shaft coupling to allow adjustment of the impeller position.

3. For motor driven units with hollow shafts, an adjusting nut may be provided at the top of the motor shaft.

J. Spacer coupling: When mechanical seals are scheduled, provide an adjustable spacer coupling to allow removal of the seal without driver removal.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-8 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED)

2.08 PUMP COLUMN PIPE
A. Pump column pipe: Thickness and material as scheduled.

B. Head connection: Design with flanged and bolted connection to discharge head and flanged and bolted connection to impeller assembly to permit removal of impeller bowl assembly without disturbing the column or discharge connections.

C. Design Working Pressure: Design to withstand a design working pressure not less than 1.20 times the maximum shutoff total dynamic head with the maximum diameter impeller at the maximum operating speed plus the maximum suction static head.

D. Pressure test: Design to withstand a 5-minute hydrostatic test pressure not less than 1.5 times the design working pressure; perform test at source.

E. Lengths and connections: Design with maximum 10-foot length, or less if scheduled, interchangeable column sections with flanged or threaded with registered fit screwed connections as scheduled.

F. Diameter: Design column inside diameter for no more than 4 feet of fluid friction loss per 100 feet of column length.

2.09 PUMP BARREL/CAN
A. Pump barrel/can: Pipe thickness and material as scheduled and shall be provided by manufacturer; inlet as indicated on the Drawings.

B. Mounting flange: Sufficient strength and thickness to withstand 1.5 times the imposed loads under any operating condition.

C. Can lining: When scheduled, provide cement mortar lining in accordance with AWWA C205.

D. Can diameter: Provide can diameter so that free-flow cross-sectional area in the can after lining or coating is at least 10 percent more than the can inlet nozzle flow area.

2.10 PUMP DISCHARGE HEAD ASSEMBLY
A. Design the discharge head for above or base discharge as scheduled.

B. Design the discharge vertical to horizontal flow transition as a smooth pipe elbow or from a minimum of 3 pipe pieces mitered to form the elbow.

C. Design discharge head to mate with the driver as scheduled.

D. Head and base plate construction: Sufficient strength, weight, and thickness to provide accurate alignment, prevent excessive deflection and support the drive motor.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-9 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) E. Stuffing box and seal:

1. Design the discharge head with a stuffing box to accommodate packing or mechanical seals as scheduled.

2. Shaft seal type: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.
a. Packing: When packing scheduled, provide stuffing box arranged for packing (sized for bronze lantern ring and 6 packing rings minimum); provide hollow shaft motor with top adjusting nut.
b. Mechanical seal: When scheduled, provide stuffing box suitable for the specified seal and provide solid shaft motor with spacer coupling.

3. Drain: Provide drain, minimum 3/4-inch size, for pump stuffing box leakage, together with drain line to the pump can or wet well or to nearest equipment drain as indicated on the Drawings.

F. Discharge vent: Provide 3/4-inch NPT threaded high point vent on discharge; install pipe nipple with threaded ball valve in vent.

G. Barrel/Can vent: When pump is indicated to be installed in a barrel/can, provide 1 inch NPT threaded tap on base plate to vent accumulated air at the barrel/can high point; install pipe nipple with threaded ball valve in vent.

H. Materials: As scheduled; when not scheduled, provide:

1. Pump discharge head/driver stand: Steel, ASTM A283, Grade B and/or ASTM A53, Grade B; or cast iron, ASTM A48, Class 30 minimum.

2. Pump discharge head sleeve bearing: Bronze.

3. Stuffing box and seal: Container and gland, cast iron, ASTM A48, Class 30 minimum; Neoprene top shaft seal.

2.11 EQUIPMENT GUARDS
A. Provide equipment safety guards as specified in Section 15050 - Common Work Results for Mechanical Equipment.

2.12 DRIVERS
A. Horsepower:

1. As scheduled.

2. Listed driver horsepower is the minimum to be supplied. a. Increase driver horsepower if required to prevent driver overload while operating at any point of the supplied pump operating head-flow curve including runout.
b. When scheduled driver is a motor, increase motor horsepower if required to prevent operation in the service factor.
c. Make all structural, mechanical, and electrical changes required to accommodate increased horsepower.

B. Motors: Provide motors as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and as specified in this Section:

1. RPM: As scheduled:

2. Enclosure: As scheduled.

3. Electrical characteristics: As scheduled.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-10 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED)

4. Efficiency, service factor, insulation, and other motor characteristics: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

5. Motor accessories: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and in this Section.

6. Coordinate motors with the variable frequency drive manufacturer to ensure compatibility between the motor and variable frequency drive.

C. Variable frequency drives (VFDs): As scheduled and as specified in Sections 16262 - Variable Frequency Drives 0.50 - 50 Horsepower and 16265 - Reduced Harmonic Variable Frequency Drives.

1. Contractor to coordinate with the existing pump manufacture to replace existing pump motor with new VFD duty rated motor.

D. Other drivers: As scheduled and as specified in sections listed in the Schedule.

E. Non-reverse ratchets: When scheduled, provide driver with non-reverse ratchets or pin mechanism to prevent reverse rotation of the pump and driver in the event of discharge valve failure.

2.13 SUPPORTS
A. Strength: Design pump discharge head and driver (motor or engine) supports to withstand a minimum of 1.5 times the maximum imposed operating loads or the imposed seismic loads, whichever is greater.

B. Resonant frequency: Design supports in conjunction with the pump, shafting, drivers, bearings, and other components to avoid natural resonant frequencies, either torsional, radial, or axial as specified in Section 15958 - Mechanical Equipment Testing.

C. Coordinate pump and drive system supports with the foundation designs as indicated on the Drawings.

D. Anchor bolts: As specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry.

2.14 SPARE PARTS AND SPECIAL TOOLS
A. Spare parts:

1. Seal packing material: 1 set of each type supplied.

2. Line shaft rubber bearings: 1 set for each type pump.

3. Line shaft bronze bearings: 1 set for each type pump.

4. Impeller and bowl wear rings: 1 set for each type of pump.

5. Mechanical seal: 1 complete seal of each type.

6. Motor/gear thrust bearing set: 1 for each type of pump.

7. Motor radial bearing set: 1 for each size of motor (if specified).

8. Pump impeller/bowl assembly: 1 of each type supplied.

9. Line shaft: 1 length of each size and type.

B. Special tools: Deliver 1 set for each furnished pump type and size needed to assemble and disassemble pump system.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-11 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) PART 3 EXECUTION

3.01 PREPARATION
A. Anchoring and bracing to structures:

1. Prepare equipment anchor setting template(s) and use to position anchors during construction of supporting structure(s).

2. Install anchors of type and material indicated on approved anchoring designs.

3. Install anchors with embedment indicated on approved anchoring designs.

3.02 INSTALLATION
A. Install the equipment in accordance with the accepted installation instructions and anchorage details.

B. General:

1. Install free-standing enclosures on a raised concrete housekeeping pad:
a. Provide structural leveling channels in accordance with the manufacturer’s recommendations to provide proper alignment of the units. b. Weld and/or bolt the VFD frame to the leveling channels.

2. Provide openings in top or bottom of the VFD (free-standing or within motor control center) enclosure for conduit only, no additional openings will be allowed:
a. Improperly cut holes will require that the entire panel be replaced:
1) No hole closers or patches will be allowed.

3. Bundle circuits together and terminate in each unit:
a. Tie with nylon wire ties.
b. Label all wires at each end with wire numbers shown on the approved control drawings.

4. Replace existing motor for the existing carousel pump(s) with new VFD duty rate motor. Motor selection shall be coordinated with the existing pump manufacturer, and specification section 16222 and 16262. The existing motors are manufactured by NIDIC Motor Corporation, Model BF48A, and Catalog No.: H040S2BLG.

3.03 COMMISSIONING
A. As specified in Section 01756 - Commissioning and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 1-day minimum.
b. Functional Testing: 1 trip, 1-day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

4. Process operational period:
a. As required by Owner or Contractor.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-12 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) C. Source testing: As specified in the Pump Schedule.

D. Functional testing: As specified in the Pump Schedule.

Vertical Turbine Short Setting Centrifugal Pumps
11312D-13 8660F10 July 12, 2023 - CONFORMEDpw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED)3.04 PUMP SCHEDULE Tag Numbers PMP-89100, PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump Station Recycled Water Pump Station Drawing(s) 89D01, 89D02, 89M01, 89M02, 89E01, 89E02, 89N01 91M01, 91E01, 91N01 98M01, 99E03, 99N01, 99N02, General Characteristics:

Application Wastewater Wastewater Wastewater Recycled Water Service Secondary Effluent
Secondary
Effluent
Secondary
Effluent
Reclaimed Water
Pump
Quantity Note 1 1 1 4 installed First Named Manufacturer's Model Number Note 1 12AF 12EQH 12RL-SS Maximum Noise, dBA at 3 feet Note 1 85 85 85 Minimum Pumped Fluid Degrees Fahrenheit Note 1 50 50 50 Normal Pumped Fluid Degrees Fahrenheit Note 1 70 70 70 Maximum Pumped Fluid Degrees Fahrenheit Note 1 85 85 85 Vibration Analysis Level Note 1 None None None Vibration Analysis Expert Note 1 Not Required Not Required Not Required Pump Characteristics:

Number of Stages Note 1 Per Manufacturer Per Manufacturer Per Manufacturer Impeller Type Note 1 Enclosed Enclosed Impeller, Maximum Number of Vanes Note 1 Per Manufacturer
Per
Manufacturer
Per Manufacturer
Pass Minimum Sphere Size, Inch Note 1 1-inch 1-inch 0.75-inch

Vertical Turbine Short Setting Centrifugal Pumps
11312D-14 8660F10 July 12, 2023 - CONFORMEDpw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) Tag Numbers PMP-89100, PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump Station Recycled Water Pump Station Drawing(s) 89D01, 89D02, 89M01, 89M02, 89E01, 89E02, 89N01 91M01, 91E01, 91N01 98M01, 99E03, 99N01, 99N02, Pump Impeller Bowl Bearing Lubrication Note 1 Product
Lubricated
Product
Lubricated
Product Lubricated
Shaft Seal Type Note 1 Type 1 Type 1 Type 1 Suction Bowl Bearing Lubrication Note 1 Grease Grease Product Lubricated Suction Strainer Note 1 Required Required None Anti-Vortex Baffle Note 1 None Required None Required None Line Shaft Type Note 1 Open Open Open Minimum Line Shaft Bearing Spacing, Feet Note 1 10 10 10 Line Shaft Lubrication Note 1 Product Product Product Column Connection Type Note 1 Flanged Flanged Threaded Maximum Column Section Lengths, Feet Note 1 10 10 10 Pump Barrel or Can Note 1 None Required None Required Can Discharge Arrangement Note 1 Above Base Above Base Base Coupling Type Note 1 Spacer Spacer No Coupling Speed Control Variable Frequency Drive
Variable
Frequency
Drive
Variable
Frequency Drive
Variable Frequency
Drive
Maximum Pump rpm 1780 1780 1180 1800 Minimum Pump rpm 885 885 880 880

Vertical Turbine Short Setting Centrifugal Pumps
11312D-15 8660F10 July 12, 2023 - CONFORMEDpw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) Tag Numbers PMP-89100, PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump Station Recycled Water Pump Station Drawing(s) 89D01, 89D02, 89M01, 89M02, 89E01, 89E02, 89N01 91M01, 91E01, 91N01 98M01, 99E03, 99N01, 99N02, Rated Design Point (at Maximum Revolutions per Minute):

Flow, gpm Note 1 4000 1750 900 Head, Feet Note 1 21.9 15.00 240 Minimum Efficiency, Percent Note 1 65 73 80 Required Condition 2 (at Maximum Revolutions per Minute):

Flow, gpm Note 1 2000 1000 600 to 700 Head Range, Feet Note 1 38 to 42 18 to 20 310 to 280 Minimum Efficiency, Percent Note 1 32 64 70 Required Condition 3 (at Maximum Revolutions per Minute):

Flow, gpm Note 1 4500 2000 1,000 to 1,100 Head Range, Feet Note 1 22 to 26 11 to 13 220 to 180 Minimum Efficiency, Percent Note 1 68 74 76 Other Conditions:

Maximum Shut Off Head, Feet Note 1 73 27 344 Maximum NPSHr at every Specified Flow, Feet Note 1 Manufacture To Specify
Manufacture to
Specify
25 Minimum NPSHa at every Specified Flow, Feet Note 1 36.5 39.01 5 Minimum Suction Static Head, Feet Note 1 2.83 2 9 Maximum Suction Static Head, Feet Note 1 8.3 5 33

Vertical Turbine Short Setting Centrifugal Pumps
11312D-16 8660F10 July 12, 2023 - CONFORMEDpw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) Tag Numbers PMP-89100, PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump Station Recycled Water Pump Station Drawing(s) 89D01, 89D02, 89M01, 89M02, 89E01, 89E02, 89N01 91M01, 91E01, 91N01 98M01, 99E03, 99N01, 99N02, Pump Materials:

Suction Bell Note 1 Cast Iron Cast Iron Cast Iron Suction Bell Bearing Note 1 Bronze Bronze High Lead Tin Bronze Impeller Cases Note 1 Bronze Cast Iron Leaded Tin Bronze Impeller Note 1 Bronze Bronze Leaded Tin Bronze Impeller Bearing Note 1 Bronze Bronze High Lead Tin Bronze Impeller Shaft Key Note 1 Steel Steel Steel, Gr 1045 Line Shaft and Coupling Note 1 Type 416 Stainless Steel
Type 416
Stainless Steel
Rubber Buna-N
Line Shaft Bearings Note 1 Neoprene Neoprene N/A Shaft Enclosing Tube Note 1 Schedule 40 Steel Pipe
Schedule 40
Steel Pipe
Hardened
Shaft Sleeve Note 1 Hardened Hardened Steel Pipe, 0.25 Column Material and Thickness, Inch or Schedule Note 1 Steel Pipe, 0.25 Steel Pipe, 0.25 Steel Pipe, 0.50 Can Material and Thickness, Inch or Schedule Note 1 Steel Pipe, 0.50 Steel Pipe, 0.50 Epoxy Can Lining Note 1 Epoxy Epoxy Cement Mortar Can Coating Note 1 Painted Painted Cast Iron

Vertical Turbine Short Setting Centrifugal Pumps
11312D-17 8660F10 July 12, 2023 - CONFORMEDpw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) Tag Numbers PMP-89100, PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump Station Recycled Water Pump Station Drawing(s) 89D01, 89D02, 89M01, 89M02, 89E01, 89E02, 89N01 91M01, 91E01, 91N01 98M01, 99E03, 99N01, 99N02, Discharge Head/Driver Stand Note 1 Steel Steel High Lead Tin Bronze
Discharge Head Bearing Note 1 Ductile Iron Ductile Iron Cast Iron Discharge Stuffing Box Note 1 Cast Iron Cast Iron Driver Characteristics:

Driver Type VFD Motor VFD Motor VFD Motor VFD Motor Drive Arrangement Vertical, Coupled Vertical, Coupled Vertical, Coupled Vertical, CoupledNon-Reverse Ratchets None Required None Required Required Minimum Driver Horsepower 40 40 10 75 Maximum Driver rpm 1800 1800 1200 1,800 Motor Characteristics (When Motor is Driver Type):

Inverter Duty Rated Yes Yes Yes Yes Motor Voltage/Phases/Hertz 460/3/60 460/3/60 460/3/60 460/3/60 Enclosure Type WP1 WP1 WP1 TEFC

Vertical Turbine Short Setting Centrifugal Pumps
11312D-18 8660F10 July 12, 2023 - CONFORMEDpw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312D (CONFORMED) Tag Numbers PMP-89100, PMP-89101 PMP-89102 PMP-91100 PMP-99411, 99412, 99413, 99414 Location Carousel Pump Station PAU Pump Station Recycled Water Pump Station Drawing(s) 89D01, 89D02, 89M01, 89M02, 89E01, 89E02, 89N01 91M01, 91E01, 91N01 98M01, 99E03, 99N01, 99N02, Source Testing:

Test Witnessing Note 1 Witnessed Witnessed Not Witnessed Performance Test Level Note 1 2 2 2 Vibration Test Level Note 1 1 1 2 Noise Test Level Note 1 1 1 1 Functional Testing:

Performance Test Level Note 1 3 3 2 Vibration Test Level Note 1 2 2 2 Noise Test Level Note 1 2 2 1 Notes: This pump is existing. Only the motor and VFD will be replaced on the pump.

END OF SECTION

Horizontal ANSI Centrifugal Pumps
11312O-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED) SECTION 11312O

HORIZONTAL ANSI CENTRIFUGAL PUMPS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Frame mounted, centrifugal, horizontal end suction pumps in accordance with ASME B73.1, with drivers and features as scheduled.

B. Tag numbers: As specified in Pump Schedule.

1.02 REFERENCES
A. American Bearing Manufacturers Association (ABMA).

B. American Society of Mechanical Engineers (ASME):

1. B73.1 - Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process.

C. ASTM International (ASTM):

1. A48 - Standard Specification for Gray Iron Castings.

2. A108 - Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished.

3. A276 - Standard Specification for Stainless Steel Bars and Shapes.

4. A283 - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates.

5. A322 - Standard Specification for Steel Bars, Alloy, Standard Grades.

6. A395 - Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures.

7. A494 - Standard Specification for Castings, Nickel, and Nickel Alloy.

8. A743 - Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application.

9. B367 - Specification for Titanium and Titanium Alloy Castings.

10. E10 - Standard Test Method for Brinell Hardness of Metallic Materials.

D. Hydraulic Institute (HI):

1. 9.1-9.5 - Pumps - General Guidelines.

2. 14.1-14.2 - Rotodynamic Pumps for Nomenclature and Definitions.

3. 14.3 - Rotodynamic Pumps for Design and Application.

4. 14.6 - Rotodynamic Pumps for Hydraulic Performance Acceptance Tests.

1.03 TERMINOLOGY
A. The words and terms listed below are not defined terms that require initial capital letters, but, when used in this Section have the indicated meaning.

1. Allowable Operating Region (AOR): The region over which the service life of the pump is not seriously compromised by hydraulic loads, vibration, or flow

Horizontal ANSI Centrifugal Pumps
11312O-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED) separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

2. Preferred Operating Region (POR): The region over which the service life of the pump will not be significantly affected by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

3. Pump head (total dynamic head, TDH), flow capacity, pump efficiency, net positive suction head available (NPSHa), and net positive suction head required (NPSHr): As defined in HI 9.1-9.5, 14.1-14.2, 14.3, 14.6 and as modified in this Section.

4. Suction head: Gauge pressure available at pump intake flange or bell in feet of fluid above atmospheric; average when using multiple suction pressure taps, regardless of variation in individual taps.

5. Tolerances: In accordance with HI 9.1-9.5, 14.1-14.2, 14.3, and 14.6 unless specified more restrictively.

1.04 DELEGATED DESIGN
A. As specified in Section 01357 - Delegated Design Procedures.

B. Anchoring and bracing.

C. Rotordynamic analysis.

1.05 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Delegated Design Submittals:

1. Provide project-specific calculations based on support conditions and requirements to resist loads specified in Section 01850 - Design Criteria.

2. Anchoring and bracing:
a. Design of equipment support structures or pedestals and associated anchoring to structures.

3. Rotordynamic analysis:

4. Level as scheduled.

C. Commissioning Submittals:

1. For commissioning submittals listed below and specified in this Section and as specified in Section 01756 - Commissioning:
a. Manufacturer’s representative qualifications.
b. Certificates.
1) Requirements as specified in this Section.
c. Test Plans:
1) Test requirements as specified in this Section.
d. Test Reports:
e. Manufacturer’s representatives field notes and data. f. Owner training.

Horizontal ANSI Centrifugal Pumps
11312O-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED) D. As specified in Section 01600 - Product Requirements.

1. Product data.
a. Pump certification.
b. Weighted average lead.

2. Shop drawings.

3. Calculations:
a. Torsional analysis.

E. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

1.06 WARRANTY
A. As specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 MANUFACTURERS
A. Pump: One of the following or equal:

1. Flowserve Co., model as scheduled.

2. ITT Ind., similar to scheduled model.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Horizontal, centrifugal, ASME B73.1 end suction pump, drivers, motors, seals or packing, couplings, base plates, guards, supports, anchor bolts, necessary valves, gauges, taps, lifting eyes, stands, and other items as required for a complete and operational system.

B. Design requirements:

1. Pump performance characteristics:
a. As specified in Pump Schedule.
b. Rotordynamic analysis level: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment. 1) Vibration analysis expert: Provide when scheduled.
c. All required conditions (flow/head) shall be within the pump manufacturer’s Allowable Operating Range (AOR).
d. Performance tolerances shall be the same as the test tolerances specified in Section 15958 - Mechanical Equipment Testing

2. Motor characteristics: As specified in Pump Schedule.

C. Product requirements as specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

Horizontal ANSI Centrifugal Pumps
11312O-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED)

2.03 MATERIALS
A. General:

1. Materials in the Pump Schedule shall be the type and grade as specified in this Section.

2. Drinking Water Pumps: Provide materials in conformance with Section 15050 - Common Work Results for Mechanical Equipment.

B. Cast iron: ASTM A48, Class 30 minimum.

C. Ductile iron: ASTM A395.

D. Steel: ASTM A108, grade as scheduled or ASTM A322, grade as scheduled.

E. Stainless steel: ASTM A276, type as scheduled.

F. Iron-chromium alloy: ASTM A743, Grade CA40.

G. Structural steel: ASTM A283, Grade D.

H. Hastelloy C: ASTM A494, Grade CW-12M-2.

I. Titanium: ASTM B367, Grade C-3.

2.04 GENERAL PUMP CONSTRUCTION
A. Type: Horizontal centrifugal, end suction pumps manufactured in accordance with ASME B73.1, except as modified in this Section.

B. Other requirements:

1. Vibration: In accordance with ASME B73.1 or as specified in Section 15958 - Mechanical Equipment Testing, whichever is more stringent.

2.05 PUMP CASINGS
A. Type: 1-piece volute type with integral suction and discharge nozzles.

B. Material: As scheduled.

C. Design working pressure: Minimum 1.10 times maximum shutoff total dynamic head with maximum installable impeller diameter at maximum operating speed plus maximum suction static head.

D. Hydrostatic test: 10-minute hydrostatic test at minimum 1.5 times design working pressure.

2.06 IMPELLERS
A. Type: As scheduled.

B. Material: As scheduled.

Horizontal ANSI Centrifugal Pumps
11312O-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED) C. Method of securing to shafts: Threaded impeller in accordance with ASME B73.1.

D. Balance: As specified in Section 15050 - Common Work Results for Mechanical Equipment and vibration criteria as specified in Section 15958 - Mechanical Equipment Testing.

2.07 PUMP SHAFTS
A. Material: As scheduled.

B. Strength: Able to withstand minimum 1.5 times maximum operating torque and other loads.

C. Solid shaft without sleeve.

2.08 STUFFING BOXES
A. Type: In accordance with ASME B73.1, Figure 3, with universal cover adapter.

B. Materials: As scheduled.

C. Shaft seal type: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.

D. Drain: Minimum 3/8-inch size, with drain line to nearest equipment floor drain.

2.09 BEARINGS AND BEARING FRAME
A. Bearing type: Anti-friction meeting ABMA standards; self-aligning spherical roller type radial bearings; double row ball type or tapered roller for thrust bearings.

B. Bearing lubrication: Grease or oil lubricated as scheduled:

1. For oil lubricated, provide pressure lubricating system or separate oil reservoir type system with oil filler pipe and external level indicator gauge.

2. For grease lubricated, provide external grease fittings with grease relief pipe.

3. Size sufficiently to safely absorb heat energy normally generated in bearing under maximum ambient temperature of 60 degrees Celsius.

C. Bearing life: In accordance with ASME B73.1.

D. Pump bearing frames:

1. Material: As scheduled.

2. Provide a 1-piece rigid construction with bearing housing at outboard (pump) end, and end cover or housing at inboard (driver) end.

E. Grease seals and deflectors: Lip type seals and labyrinth type deflectors at both ends of bearing housings, able to prevent entrance of contaminants.

F. Bearing isolators: Provide bearing isolators on each end with integral locking ring to prevent leakage past the shaft.

1. Manufacturers: The following or equal:
a. Inpro Model VBX.

Horizontal ANSI Centrifugal Pumps
11312O-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED)

2.10 COUPLINGS
A. Types: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.

B. Design coupling to withstand a minimum of 1.5 times the maximum operating torque and other imposed loads.

2.11 SUPPORTS, PEDESTALS, AND BASEPLATES
A. Type: Provide baseplate and supports in accordance with ASME B73.1.

B. Materials: Same as pump casing or ASTM A283 steel, hot-dip galvanized after fabrication and coated as specified in Section 09960 - High-Performance Coatings.

C. Pump and driver support strength: Able to withstand minimum 1.5 times maximum imposed operating loads or imposed seismic loads, whichever is greater.

D. Anchor bolts: As specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry.

2.12 EQUIPMENT GUARDS
A. Provide equipment safety guards as specified in Section 15050 - Common Work Results for Mechanical Equipment.

2.13 DRIVERS
A. Horsepower:

1. As scheduled.

2. Listed driver horsepower is the minimum to be supplied:
a. Increase driver horsepower if required to prevent driver overload while operating at any point of the supplied pump operating head-flow curve including runout.
b. When scheduled driver is a motor, increase motor horsepower if required to prevent operation in the service factor.
c. Make all structural, mechanical, and electrical changes required to accommodate increased horsepower.

B. Motors: Provide motors as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and as specified in this Section:

1. Revolutions per minute: As scheduled.

2. Enclosure: As scheduled.

3. Electrical characteristics: As scheduled.

4. Efficiency, service factor, insulation, and other motor characteristics: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

Horizontal ANSI Centrifugal Pumps
11312O-7 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED)

5. Motor accessories: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and in this Section.

6. Coordinate motors with the variable frequency drive manufacturer to ensure compatibility between the motor and variable frequency drive.

C. Other drivers: As scheduled and as specified in sections listed in the Schedule.

2.14 SPARE PARTS AND SPECIAL TOOLS
A. Special tools: Deliver 1 set for each furnished pump type and size needed to assemble and disassemble pump system.

B. Spare parts: Deliver the following as specified in Section 01600 - Product Requirements:

1. Pump thrust bearing set.

2. Pump radial bearing set.

3. Gasket set.

4. Motor bearing set of each type.

5. Pump impeller, trimmed to match installed impeller.

6. Mechanical seal rebuild set.

PART 3 EXECUTION

3.01 PREPARATION
A. Anchoring and bracing to structures:

1. Prepare equipment anchor setting template(s) and use to position anchors during construction of supporting structure(s).

2. Install anchors of type and material indicated on approved anchoring designs.

3. Install anchors with embedment indicated on approved anchoring designs.

3.02 INSTALLATION
A. Install the equipment in accordance with the accepted installation instructions and anchorage details.

3.03 COMMISSIONING
A. As specified in Section 01756 - Commissioning.

B. Source Testing (Factory Acceptance Tests):

1. Not witnessed.

2. Furnish test reports and Manufacturer’s Certificate of Source Testing.

3. Equipment Testing:
a. Pump:
1) Performance test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
2) Vibration test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.

Horizontal ANSI Centrifugal Pumps
11312O-8 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED) 3) Noise test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
4) Pump casing: Hydrostatic pressure tests if specified in this Section. b. Motor: Test as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

C. Installation Verification:

1. Furnish Manufacturer’s Certificate of Installation Verification.

D. Functional testing:

1. Equipment testing:
a. Pump:
1) Performance test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
2) Vibration test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
3) Noise test: Test level as scheduled; test as specified in Section 15958 - Mechanical Equipment Testing.
b. Motor: Test as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

E. Owner Training:

1. Perform Owner training as specified in Section 01756 - Commissioning.

2. Number of sessions:
a. Operations: 1.
b. Maintenance: 1.

3.04 PUMP SCHEDULE
Tag Numbers PMP-85104
General Characteristics:

Application Wastewater
Service Secondary Effluent
Quantity 1
First Named Manufacturer’s Model 2K3X2-10ARV
Normal Pumped Fluid Degrees Fahrenheit 60
Rotordynamic Analysis Level None
Vibration Analysis Expert Not Required

Horizontal ANSI Centrifugal Pumps
11312O-9 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED) Tag Numbers PMP-85104
Pump Characteristics:

Impeller Type Open
Bearing Lubrication Grease
Shaft Seal Type Type 3
Speed Control Fixed
Maximum Pump Revolutions per Minute 1750
Suction Flange Size, Minimum (in.) 3
Discharge Flange Size, Minimum (in.) 2
Rated Design Point (at Maximum Revolutions per Minute):

Flow, Gallons per Minute 140
Head, Feet 75
Minimum Efficiency, Percent 50
Pump Materials:

Pump Casing Ductile Iron
Impeller Ductile Iron
Impeller Wear Ring 420 Stainless
Casing or Suction Head Wear Ring 420 Stainless
Shaft 316 Stainless
Shaft Sleeve 316 Stainless
Stuffing Boxes Ductile Iron
Driver Characteristics:

Driver Type Motor
Drive Arrangement Horizontal, Coupled
Minimum Driver Horsepower 7.5
Maximum Driver Speed, Revolutions per Minute 1800
Motor Characteristics (When Motor is Driver Type):

Inverter Duty Rated No
Motor Voltage/Phases/Hertz 460/3/60
Enclosure Type TEFC

Horizontal ANSI Centrifugal Pumps
11312O-10 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11312O (CONFORMED) Tag Numbers PMP-85104
Source Testing:

Performance Test Level 1
Vibration Test Level 1
Noise Test Level 1
Functional Testing:

Performance Test Level 1
Vibration Test Level 1
Noise Test Level 1

END OF SECTION

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (CONFORMED) SECTION 11313E

HORIZONTAL SELF-PRIMING SAMPLE CENTRIFUGAL PUMPS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes:

1. Requirements for provision of pump systems including self-priming centrifugal motor driven pumps are included.

B. Tag numbers: As specified in Pump Schedule.

1.02 REFERENCES
A. American Welding Society (AWS):

1. D1.1 - Structural Welding Code - Steel.

B. ASTM International (ASTM):

1. A48 - Standard Specification for Gray Iron Castings.

2. A108 - Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished.

3. A276 - Standard Specification for Stainless Steel Bars and Shapes.

4. A283 - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates.

5. A322 - Standard Specification for Steel Bars, Alloy, Standard Grades.

6. A536 - Standard Specification for Ductile Iron Castings.

7. A582 - Standard Specification for Free-Machining Stainless Steel Bars.

8. A666 - Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar.

9. F593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs.

10. F594 - Standard Specification for Stainless Steel Nuts.

C. Hydraulic Institute (HI):

1. 9.1-9.5 - Pumps - General Guidelines.

2. 14.1-14.2 - Rotodynamic Pumps for Nomenclature and Definitions.

3. 14.3 - Rotodynamic Pumps for Design and Application.

4. 14.6 - Rotodynamic Pumps for Hydraulic Performance Acceptance Tests.

D. National Electrical Manufacturers Association (NEMA).

1.03 DEFINITIONS
A. Allowable Operating Region (AOR): The region over which the service life of the pump is not seriously compromised by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

B. Flow, head, efficiency, and driver horsepower specified in this Section are minimums unless stated otherwise.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (CONFORMED) C. Preferred Operating Region (POR): The region over which the service life of the pump will not be significantly affected by hydraulic loads, vibration, or flow separation where the pump’s vibration, noise, and cavitation are within acceptable limits.

D. Pump head (Total Dynamic Head, TDH), flow capacity, pump efficiency, net positive suction head available (NPSHa), and net positive suction head required (NPSHr):

As defined in HI 9.1-9.5, 14.1-14.2, 14.3, 14.6 and as modified in this Section.

1.04 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Vibration analysis: Submit as specified in Section 15050 - Common Work Results for Mechanical Equipment when scheduled.

C. Product data: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

D. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

E. Calculations: As specified in Section 15050 - Common Work Results for Mechanical Equipment.

F. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

G. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.05 QUALITY ASSURANCE
A. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

B. Provide pumps specified in this Section from same manufacturer.

C. Vibration analysis: Provide equipment vibration analysis as specified in this Section.

1. Vibration analysis level: As scheduled and as specified in Section 15050 - Common Work Results for Mechanical Equipment.

2. Vibration analysis expert: Provide when scheduled.

D. Manufacture’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.06 WARRANTY
A. As specified in Section 01783 - Warranties and Bonds.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (CONFORMED) PART 2 PRODUCTS

2.01 MANUFACTURERS
A. Pumps:

1. One of the following or equal:
a. Gorman-Rupp Company, AMT.
b. Barnes Pumps, similar to series listed.

2.02 DESIGN AND PERFORMANCE CRITERIA
A. Centrifugal self-priming pump with components: Pump, close coupled driver, bearings, seals, supports, anchor bolts, necessary valves, taps, and other items as required for a complete and operational system.

B. Provide pumps, drivers, couplings, and other components capable of intermittent or continuous operation while pumping specified fluid; loss of prime and possible siphoning of liquid from the pump casing shall be considered in design of the self-priming features.

C. Design requirements:

1. Pump performance characteristics:
a. As specified in the Pump Schedule.
b. All required conditions (flow/head) shall be within the pump manufacturer’s Allowable Operating Range (AOR).
c. Performance tolerances shall be the same as the test tolerances specified in Section 15958 - Mechanical Equipment Testing.

2. Motor characteristics: As specified in Pump Schedule.

D. Product requirements as specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

2.03 MATERIALS
A. General: Materials in the Pump Schedule shall be the type and grade as specified in this Section.

B. Cast iron: ASTM A48, Class 30 minimum.

C. Ductile iron: ASTM A536, Grade as scheduled.

D. 316 Stainless: ASTM A276, Type 316 stainless steel or ASTM A666, Type 316 Stainless Steel.

E. 416 Stainless: ASTM A582, Type 416 stainless steel.

F. Steel: ASTM A108, Grade as scheduled.

G. Hot-wrought alloy steel: ASTMA322, Grade 4140, UNS Alloy G41400.

H. Structural steel: ASTM A283, Grade D.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (CONFORMED)

2.04 GENERAL PUMP CONSTRUCTION
A. Type: Self-priming, centrifugal, sewage type pumps meeting performance and design requirements and features as specified in this Section.

B. Fasteners: Provide Type 316 stainless steel fasteners in accordance with ASTM F593 and ASTM F594.

2.05 PUMP CASINGS
A. Type: 1 or 2-piece.

B. Material: Cast Iron.

C. Construction: Of sufficient strength, weight, and thickness to provide accurate alignment, prevent excessive deflection, and support drive motor.

D. NPT suction and discharge ports meeting design working pressure.

E. Design internal suction check valve that can be removed through the cover plate.

Check valve plate shall be constructed of neoprene.

F. Hardware: Stainless steel.

G. Maximum working pressure: 75 pound per square inch.

H. Maximum temperature: 160 degrees Fahrenheit.

I. Vent and taps:

1. Provide castings with both 3/4-inch threaded low point and initial priming fill vent on casing. Install pipe nipples with threaded gate valves in drain and priming vent.

2.06 IMPELLERS
A. Type: Self-cleaning, semi-open or open.

B. Material: Ductile iron.

C. Design with smooth water passages to prevent clogging by stringy or fibrous materials.

D. Design impeller and volute for automatic unattended self-priming and repriming with a dry suction leg and without reliance on a suction check valve to maintain prime.

E. Rotation: Clockwise looking from top, unless otherwise indicated on the Drawings.

F. Balance: As specified in Section 15050 - Common Work Results for Mechanical Equipment to meet vibration criteria as specified in Section 15958 - Mechanical Equipment Testing.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (CONFORMED)

2.07 SHAFT
A. Material: Stainless steel.

B. Strength: Able to withstand minimum 1.5 times maximum operating torque and other loads.

C. Resonant frequency: As specified in Sections 15050 - Common Work Results for Mechanical Equipment and 15958 - Mechanical Equipment Testing.

D. Deflection: Maximum 0.002 inches under operating conditions.

E. Impeller attachment: Taper fitted at impeller with key and bolt for securing impeller.

F. Pump shaft seal:

1. Silicon carbide mechanical seal.

2. Self-lubricating.

2.08 COUPLINGS
A. Type: Close coupled.

B. Flexible coupling life: Infinite at up to 0.3-degree misalignment angle total or per disk for disk type at maximum operating loads.

C. Design coupling to withstand a minimum of 1.5 times the maximum operating torque and other imposed loads.

2.09 DRIVERS
A. Horsepower:

1. As scheduled.

2. Listed driver horsepower is the minimum to be supplied. a. Increase driver horsepower if required to prevent driver overload while operating at any point of the supplied pump operating head-flow curve including runout.
b. However, electrical equipment is sized for scheduled horsepower.

B. Motors: Provide motors as specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and as specified in this Section:

1. Revolutions per minute: As scheduled:

2. Enclosure: As scheduled.

3. Electrical characteristics: As scheduled.

4. Efficiency, service factor, insulation, and other motor characteristics: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower.

5. Motor accessories: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower and in this Section.

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (CONFORMED)

2.10 ANCHOR BOLTS
A. As specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry.

2.11 SPARE PARTS AND SPECIAL TOOLS
A. Spare parts: None.

B. Special tools: For each type or size of pump specified, provide 1 set of all special tools required for complete assembly or disassembly of all pump system components.

PART 3 EXECUTION

3.01 COMMISSIONING
A. As specified in Section 01756 - Commissioning and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 5-day minimum.
b. Functional Testing: 2 trips, 2-day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

4. Process operational period:
a. As required by Owner or Contractor.

C. Source testing: As specified in Pump Schedule.

D. Functional testing: As specified in Pump Schedule.

3.02 PUMP SCHEDULE
Tag Numbers PMP-87134
General Characteristics:

Service Final Effluent
Quantity 1
Maximum Noise, dBA at 3 Feet 85
Minimum Pumped Fluid Degrees Fahrenheit 50
Normal Pumped Fluid Degrees Fahrenheit 70

Horizontal Self-Priming Sample Centrifugal Pumps
11313E-7 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11313E (CONFORMED) Tag Numbers PMP-87134
Maximum Pumped Fluid Degrees Fahrenheit 85
Vibration Analysis Level None
Vibration Analysis Expert Not Required
Rated Design Point (at Maximum Revolutions per Minute):

Flow, gpm 20
Head, Feet 20
Motor Characteristics (When Motor is Driver Type):

Motor Specification Section 16222 - Low Voltage Motors up to 500 Horsepower
Motor Horsepower 0.5
Maximum Speed, Revolutions per Minute 1750
Service Factor 1.15
Voltage/Phases/Hertz 480/3/60
NEMA Enclosure Type TEFC
Source Testing:

Test Witnessing Not Witnessed
Performance Test Level None
Vibration Test Level None
Noise Test Level None
Functional Testing:

Performance Test Level 1
Vibration Test Level None
Noise Test Level None

END OF SECTION

Rotary-Lobe Blowers
11376A-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED) SECTION 11376A

ROTARY-LOBE BLOWERS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Rotary-lobe blowers to supply air to the packaged water treatment system specified in Section 11802 - Packaged Water Treatment System Rehabilitation, including the related appurtenances specified herein and as indicated on the Drawings:

1. Automatic air supply valves and valve actuators as indicated on the Drawings and specified elsewhere.

2. Blower piping, valving, inlet filters, silencers, and instrumentation indicated on the Drawings and specified elsewhere.

B. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

C. Tag numbers:

1. Air Wash Blower 1 (BLO-85106).

2. Air Wash Blower 2 (BLO-85107).

3. Air Wash Blower 3 (BLO-85108).

1.02 REFERENCES
A. American Bearing Manufacturers Association (ABMA):

1. 9 - Load Ratings and Fatigue Life for Ball Bearings.

2. 11 - Load Ratings and Fatigue Life for Roller Bearings.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE):

1. 52.1 - Testing for HVAC Air Filtration.

C. American Society of Mechanical Engineers (ASME):

1. B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250.

D. National Electrical Manufacturers Association (NEMA):

1. 250 - Enclosures for Electrical Equipment (1,000 V Maximum).

1.03 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Product data:

1. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

2. Blower information:
a. Manufacturer.

Rotary-Lobe Blowers
11376A-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED) b. Model.
c. Blower speed in revolutions per minute.
d. Blower site capacity, actual cubic feet per minute.
e. Discharge pressure, pounds per square inch absolute. f. Horsepower required including loss in V-belt drive.
g. Weight of blower.
h. Weight of motor.
i. Free-field noise level at 3 feet from blower acoustic enclosure.

3. Motor performance and construction data.

4. Construction details of acoustic enclosure.

5. Descriptive brochures and applicable performance and construction data for each item of auxiliary equipment along with their weights.

6. Test data on equipment performance, vibration, and noise.

C. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment:

1. Blower panel device layout and material list.

D. Calculations: As specified in Section15050 - Common Work Results for Mechanical Equipment.

E. Vendor operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

F. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.04 ENVIRONMENTAL CONDITIONS
A. Blower shall be suitable for continuous service and indoor installation.

1.05 WARRANTY
A. Provide warranty as specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 DESIGN AND PERFORMANCE CRITERIA
A. System components: Aeration blowers, blower panel, and appurtenances.

B. General: Aeration blowers and appurtenances shall include the following items and supplied by blower manufacturer:

1. Rotary positive displacement blower and motor.

2. Air intake filters.

3. Silencers, inlet, discharge, and vent.

4. Butterfly valves and silencer in blowoff circuit.

Rotary-Lobe Blowers
11376A-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED)

5. Check valves.

6. Relief valves.

7. Flexible pipe connectors.

8. Pressure gauges.

9. Acoustic enclosure.

10. Discharge Temperature gauge.

11. Appurtenances as required.

C. Design criteria:

Type of Blower Rotary lobe, positive displacement
Number of blowers 3
Rated speed 4,535 RPM
Rated inlet air flow at rated speed
SCFM
447
Inlet filter/Silencer pressure loss 0.5 pounds per square inch Rated discharge pressure 19.1 psia
Rated inlet pressure 14.1 psia
Inlet temperature 104 degrees F

1. Motor: As specified in Section 16222 - Low Voltage Motors up to 500 Horsepower, except as otherwise specified or supplemented below:

Power supply 480-volt, 3-phase, 60-hertz
Horsepower 20
Speed, maximum 4,535 RPM
Enclosure TEFC
Service factor 1.15

2. Drive: Belt.

3. Noise control:
a. Sound pressure levels radiated from equipment furnished shall not exceed 78 dBA (mean, A-weighted) at 3 feet (RE 2 x 10-5 N/m2) for free field condition when unit is in operation at rated flow.

4. Vibration:
a. Maximum acceptable peak vibration velocity (unfiltered) for blower equipment is 0.45 inches per second.

5. Provide instrumentation, and alarms as indicated on the P&ID Drawings and as specified in Sections 17100 - Control Strategies and 17101 - Specific Control Strategies.

D. System operation: System operation shall be as specified in Sections 17100 - Control Strategies and 17101 - Specific Control Strategies.

Rotary-Lobe Blowers
11376A-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED)

2.02 AERATION BLOWERS
A. Manufacturers: One of the following or equal:

1. Kaeser Compressors, Com-paK Series.

2. Aerzen.

3. FPZ, Inc., MS Series.

2.03 MATERIALS
A. General:

1. Aeration blower assembly: Complete with blower, drive, inlet and discharge silencers, valves, and appurtenances.

2. Blower rating: As specified above.

3. Rotation direction of blower shall match requirements of piping.

B. Blower and drive:

1. General:
a. Blower shall deliver oil-free air.
b. Blower and motor mounting: On common base.
c. Lifting provisions: Lifting eyes on blowers, motors, and base so each major component or entire unit can be lifted.
d. Piping connections: 125 pound class flanges in accordance with ASME B16.1.

2. Type: Positive displacement rotary blowers using 2 impellers to pressurize a trapped volume of air at a controlled rate prior to exposing it to a discharge pressure.

3. Casing and head plates:
a. Blower casing: 1 piece with separate head plates and end covers. b. Casing and head plates: Made of close-grained, machined cast iron. c. End covers and head plates: Reinforced with bosses at penetrations with cast, machined support feet.

4. Impellers:
a. Material: Ductile iron or cast iron.
b. Design: Straight, 3-lobe, involute type.
c. Balance: Dynamically, by removing metal from impeller body. d. Operation: Free of rubbing without need for liquid seals or lubrication. e. Timing: positively by a pair of accurately machined, heat-treated, alloy steel timing gears.
f. Shafts: Alloy steel forgings, pressed into each end of each impeller and pinned.
g. Impeller assembly support: Anti-friction type bearings, sized for a minimum ABMA 9 and 11 L10 life for bearings of 100,000 hours.

5. Lubrication:
a. Positive oil seal: Provided at each bearing.
b. Seal design: Capable of preventing lubricant from leaking into air stream. c. Vent provisions: Capable of venting impeller side of oil seal to atmosphere while eliminating possible carryover of lubricant into air stream. d. Drive-end bearings: Grease or oil lubricated.
e. Timing gears and gear-end bearings: Splash oil lubricated. f. Blower’s shipment: With openings sealed after injection of rust inhibitor.

Rotary-Lobe Blowers
11376A-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED)

2.04 APPURTENANCES
A. Inlet filter shall have front access for filter element access. Filter shall provide 99 percent removed efficiency of 5 micron particle size and larger.

B. Silencers:

1. Manufacturers: The following or equal:
a. Burgess-Manning, Model BMSI, BMSS, or equal.

2. Construction: Welded steel.

3. Discharge silencer: Furnished with copper wool absorption material and shall have connections for a pressure relief valve, pressure gauge, temperature gauge, and drain.

4. Silencers sizing: For design conditions and specifically designed for use with positive displacement blowers, size as indicated on the Drawings unless a larger size is recommended by the manufacturer.

5. Mounting of silencers: As indicated on the Drawings.

6. Noise attenuation of silencers shall as a minimum, meet the following:

Octave Band Center Frequency, hertz Attenuation, dBA
63 12
125 20
250 27
500 30
1,000 31
2,000 29
4,000 25
8,000 21
C. Acoustic enclosure:

1. Galvanized sheet-metal sandwich construction.

2. With noise attenuating walls and with ventilation openings ported, ducted, shielded, and lined with acoustic absorptive material as required to achieve specified noise levels.

3. Design criteria:
a. Seismic design criteria: As specified in Section 01850 - Design Criteria. b. Wind design criteria: As specified in Section 01850 - Design Criteria.

4. Raintight and dusttight, suitable for outdoor unprotected installation.

5. With ventilation system designed for not more than 15 degrees Fahrenheit air temperature rise with aeration blower operating at maximum load.

6. With fan interlocked with blower motor to start when blower starts and to stop with an adjustable time delay after the blower motor stops.

7. With a weather-protected ventilation air intake filter:
a. Of disposable, dry type, pleated lofted cotton and polyester fiber media construction, securely bonded to a welded galvanized wire backing, with a frame of heavy-duty paperboard.
b. Sized for not more than 400 feet per minute face velocity.

Rotary-Lobe Blowers
11376A-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED) c. With ASHRAE Standard 52.1 cleaning efficiency of not less than 25 percent.
d. With thickness not less than 1 inches.
e. With an easily visible and resettable "replace filter" indicator with retained indication independent of blower on/off status.

8. With removable access panels located for maintenance and inspection access to the housed equipment, each weighing not more than 40 pounds, or hinged if weight exceeds 40 pounds.

D. Relief valve: High-capacity, full-nozzle type; 2 inch minimum valve inlet:

1. Manufacturers: The following or equal:
a. Kunkle Valve Co.

E. Butterfly valves:

1. Constructed as specified in Sections 13446 - Manual Actuators.

2. Lined with 10 mils of epoxy suitable for temperatures to 350 degrees Fahrenheit.

3. Sealed with seals suitable for temperatures of 350 degrees Fahrenheit.

F. Check valves: No. 8808-GAX-SSF; dual disc, wafer style with torsion spring induced closure:

1. Manufacturers: The following or equal:
a. Val-Matic.

2. Consisting of following components:
a. Valve body: ASTM A126 cast iron.
b. Disc: ASTM B148-9A, aluminum bronze.
c. Spring: ASTM A276, Type 316 stainless steel.
d. Pins and thrust bearings: ASTM A276 Type 316, stainless steel. e. Seals, rated for minimum 350 degrees Fahrenheit.

G. Pressure gauges:

1. Provide one gauge for the discharge side of each blower and one for the discharge header.

2. Manufacturers: One of the following or equal:
a. Ashcroft:
1) Maximum pressure less than 10 pounds per square inch:

Model 1188.
2) Maximum pressure greater or equal to 10 pounds per square inch:

Model 1279.
b. Wika.
c. Ametek.

3. Accuracy: Grade 2A, as defined by ASME B40.100.

4. Where the maximum pressure is less than 10 pounds per square inch, provide socket and bellows; for all other pressure ranges, employ a Bourdon® tube.

5. Liquid filled case with minimum 4 1/2 inch dial face.

6. Type on discharge side of blower: Pressure gauge calibrated in pounds per square inch gauge.

7. A suitable tee handled corporation stop or ball valve and snubber shall be installed between each gauge and connection to air piping.

Rotary-Lobe Blowers
11376A-7 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED) H. Pressure switches:

1. Provide one differential pressure switch for each inlet filter, one direct switch for the discharge side of each blower, and one direct switch for the discharge header.

2. Manufacturers: One of the following or equal:
a. Ashcroft, N series.
b. United Electric, Series One.

3. Accuracy: Within 1.0 percent of range.

4. Overpressure:
a. Minimum 130 percent of maximum range pressure without damage to switch or sensing element.
b. Minimum 400 percent of nominal range without leakage or rupture.

5. Relay outputs: 2 Form C contacts.

I. Pressure transmitters:

1. Provide on pressure sensor/transmitter for the discharge side of each blower.

2. Manufacturers: One of the following or equal:
a. Emerson, Rosemount 3051 Series.
b. Yokogawa, EJA Series.
c. Endress & Hauser, Cerebar S Series.

3. Maximum ratio of total instrument range to calibrated span: 10 to 1.

4. Accuracy:
a. Reference accuracy: Plus or minus 0.075 percent of calibrated span, including effects of hysteresis, nonlinearity, and repeatability. b. Total performance accuracy: Plus or minus 0.30 percent of calibrated span, including reference accuracy effects, static pressure and ambient temperature effects.

5. Stability: Plus or minus 0.15 percent of upper range limit over 5 years.

6. Power supply: 24 VDC - 2 wire loop powered.

7. Outputs: 4 – 20 mA.

J. Other safety devices and controls: As recommended by blower manufacturer.

K. Rubber expansion joints:

1. Provided at inlet and discharge flanges of blowers.

2. Suitable for pressures up to 15 pounds per square inch gauge and temperature up to 350 degrees Fahrenheit.

3. At discharge joints, provided with control rods to restrict axial pipe movement.

4. Manufacturers: The following or equal:
a. General Rubber.

L. Discharge piping and silencer insulation: As specified in Section 15082 - Piping Insulation, and as indicated on the Drawings. Insulation inside acoustic enclosure by blower manufacturer.

M. Supports and bracing: As required to support blower, associated equipment and piping, and to prevent excessive or harmful vibration or movement of equipment or piping.

Rotary-Lobe Blowers
11376A-8 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED)

2.05 SPARE PARTS AND SPECIAL TOOLS
A. Spare parts: Provide the following:

1. 1 complete set of bearings.

2. 4 complete sets of ventilation and air intake filters.

3. 4 lubrication oil filter cartridges.

4. 2 complete sets of gaskets and o-rings.

5. 2 sets of drive belts:
a. Label spare parts as specified in Section 01600 - Product Requirements and box for storage.

B. Special tools: Provide the following:

1. 1 set of special tools with equipment when required for normal operation and maintenance.

PART 3 EXECUTION

3.01 INSTALLATION
A. Install adequate supports and bracing to support blower, associated equipment and piping, and to prevent excessive or harmful vibration or movement of equipment or piping resulting from operation of the system.

B. Mount blower on base plate: Properly align and grout base plate as required for blower and base for electric motor with sliding rails.

C. Secure silencers with hold-down bolts.

3.02 COMMISSIONING
A. As specified in Section 01756 - Commissioning, 15958 - Mechanical Equipment Testing, 11802 - Packaged Water Treatment System Rehabilitation, and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative onsite requirements:
a. Installation: 1 trip, 2-day minimum.
b. Functional Testing: 2 trips, 1-day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

4. Process operational period:
a. As required by Owner or Contractor.

Rotary-Lobe Blowers
11376A-9 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11376A (CONFORMED) C. Source testing:

1. Test as specified in Section 15958 - Mechanical Equipment Testing.

2. Blower:
a. Test witnessing: Not witnessed.
b. Conduct Level 1 General Equipment Performance Test.
c. Conduct Level 1 Vibration Test.
d. Conduct Level 1 Noise Test.

3. Electrical and Controls:
a. Conduct testing as specified in Section 17950 - Commissioning for Instrumentation and Controls.

D. Functional testing:

1. Electrical and Controls:
a. Conduct testing as specified in Section 17950 - Commissioning for Instrumentation and Controls.

2. Rotary Lobe Blower System:
a. Test witnessing: Witnessed.
b. Conduct Level 2 General Equipment Performance Test.
c. Conduct Level 2 Vibration Test.
d. Conduct Level 2 Noise Test.

END OF SECTION

Packaged Water Treatment System Rehabilitation
11802-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) SECTION 11802

PACKAGED WATER TREATMENT SYSTEM REHABILITATION
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Provisions for rehabilitation of four (4) existing packaged water treatment system units. The existing units are Microfloc Trident Model TR-840A Water Treatment units as manufactured by WesTech Engineering, Inc.

B. The Contractor shall assign responsibility of these units to WesTech Engineering, Inc., herein referred to as the manufacturer.

1. The Contractor shall provide all labor, materials, equipment, and incidentals as shown, specified and required to refurbish, install, and test (if applicable) the treatment equipment, to be supplied by the specified manufacturer, complete with piping, internals and appurtenances.

2. The specified manufacturer shall assist in the installation of all required equipment, including all instrumentation and controls connections, in order to provide a complete and operational system. Any electrical and wiring components shall be provided and installed by the Contractor unless otherwise specified.

1.02 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures.

B. Product data:

1. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

C. Shop drawings: As specified in Section 15050 - Common Work Results for Mechanical Equipment:

1. Approval Drawings: Submit six sets for approval of the following:
a. Shop drawings showing plan, elevation and sectional views/materials of construction, tank reinforcing, and electrical and piping connections. b. Materials list of items proposed to be provided under this Section. c. Manufacturer's literature and catalog cuts of purchased items. d. Manufacturer’s specifications and other data needed to prove compliance with the specified requirements.
e. Manufacturer’s installation instructions and diagrams. f. Control panel wiring schematics and layouts:
1) Scaled exterior front and side elevations with dimensional information.
2) Scaled interior panel layout showing all components coordinated with the bill of materials.
3) Bill of materials with detailed description of components. 4) Wiring schematics including wire numbers and terminal numbers.

Packaged Water Treatment System Rehabilitation
11802-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) 5) Single-line diagram of power distribution.
6) Control wiring, control logic, and instrumentation.
g. Paint System.
h. ANAB-accredited ISO 9001 quality system certification.

D. Calculations: As specified in Section15050 - Common Work Results for Mechanical Equipment.

1. Thermal management calculations for each control panel.

E. Vendor installation, operation and maintenance manuals: As specified in Section 01782 - Operation and Maintenance Manuals.

1. This information shall be provided to the Contractor and Engineer at least two weeks prior to the shipment of the equipment.

2. Submit three copies in electronic format and three copies in hard copy format, each including the following:
a. Complete manufacturer's installation instructions with detailed installation drawings.
b. Complete manufacturer's operational instructions.
c. Complete manufacturer's maintenance instructions with complete catalog information, electric motor information, parts list, recommended spare parts list and instructions for periodic maintenance of the treatment unit.

F. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

1.03 WARRANTY
A. Provide warranty as specified in Section 01783 - Warranties and Bonds.

1.04 PRODUCT DELIVERY, STORAGE AND HANDLING
A. Comply with the pertinent provisions of the delivery schedule.

B. Equipment and materials to be shipped F.O.B. shipping points, with freight prepaid to the jobsite. Fabricated parts when delivered to the site shall be stored off the ground and protected from weather and damage. Control and electrical devices shall be stored indoors.

C. Ship fabricated assemblies in largest sections permitted by carrier regulations.

Match-mark all sections for ease of field installation.

D. Handle so as to prevent damage to equipment during handling and transportation.

E. Equipment supplied under this section shall not be delivered to the site until construction has progressed to the point where installation may properly commence.

Packaged Water Treatment System Rehabilitation
11802-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) PART 2 PRODUCTS

2.01 GENERAL
A. The following items, most of which are supplied by the specified manufacturer, some of which are provided by the Contractor, describe the elements required to ensure a properly designed and integrated water treatment system:

1. Modify existing factory built steel tanks as indicated on the Drawings, including the following:
a. Repair, replacement, and/or addition of structural support components. b. Addition of an air grid connection.
c. These modifications to be done when the internals are removed and prior to repairing, sandblasting, and re-painting the tankage.

2. Refurbishing/repair/replace various ancillaries of the factory built steel modular tanks, including but not limited to:
a. Clarifier section:
1) Removing and cleaning existing media retaining screens and buoyant media.
2) Removing, inspecting, repairing, replacing influent distribution header and lateral assembly.
3) Replacing with new air distribution header and lateral assembly to updated versions.
4) Updating media to mixed media.
5) Replacing pressure switch assembly and/or add pressure transducer. b. Filter section:
1) Removing surface wash system.
2) Removing existing media, gravel support, and underdrain. 3) Removing and reusing tubular underdrains.
4) Replacing media and gravel support.
5) Incorporating an air grid, tank connection, air check, and control valve.
6) Replacing automatic process valves and/or actuators. 7) Replace headloss-pressure switch assembly and/or add pressure transducer.
8) Replace existing filter level with radar level control. c. Air blowers:
1) Contractor shall replace air wash blowers as indicated on the Drawings and as specified in Section 11376A - Rotary-Lobe Blowers.

Blowers shall be provided by packaged water treatment supplier. d. Control panel:
1) Remove and replace existing vendor control panel (VCP). 2) Installing new vendor control panel.
3) Providing all new conduit to valves and instruments from new control panel.
4) Incorporating enhanced chemical feed control.
e. Backwash supply system:
1) Replace and install new backwash supply valves with electric valve actuators for each unit.
f. Chemical feed:
1) Replace and update the chemical treatment for remote control from the VCP PLC.

Packaged Water Treatment System Rehabilitation
11802-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) B. Painting:

1. The contractor shall be responsible for coating the filter tank interior and complete treatment unit (filter tank and adsorption clarifier tank) exterior tankage surface and as specified in Section 09960 - High-Performance Coatings.
a. Surface defects repaired and any tank modifications required shall be completed as suggested by the manufacturer. The surface shall then be prepared by a method defined in Section 09960 - High-Performance Coatings.
b. All coatings shall be NSF 61 approved.

C. Technical Services: Training shall be provided to the operators for the purpose of review and understanding of any updates or modifications that have been made during the refurbishment.

1. A competent technical service representative from the manufacturer shall be provided to instruct the Owner’s personnel in the operation and maintenance of the equipment. The time listed below includes only on-site time. No travel time should be considered as part of the required training time. Comply with the requirements of Section 01756 - Commissioning.

2. Instruction during modifications to the existing water treatment units shall happen as described in the table in Section 3.02.K. Instruction and observation shall be included for the following:
a. Underdrain placement and clarifier influent and air assemblies of the first unit rehabilitated.
b. Equipment inspection, media placement, start-up and Owner training for the first unit rehabilitated.
c. Calibration of replaced or updated valves, flow meters and or pressure switches.
d. Calibration of existing or newly supplied instrumentation. e. Equipment inspection and start-up of the second unit rehabilitated. f. The minimum days specified above do not relieve the system manufacturer of providing sufficient service to place the system in satisfactory operation.
g. Advise and adjust chemical feed equipment to optimize process to include optimal clarifier and filter run times.

D. Use adequate numbers of skilled workers who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this Section.

E. The water system manufacturer shall coordinate all activities, design, installation, and operation with all other suppliers of related equipment to ensure that the final water treatment system is properly designed and functions correctly.

Packaged Water Treatment System Rehabilitation
11802-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) F. Teardown/repaint/refurbish 4 tanks with Adsorption Clarifier section and integral filter, each capable of 1,400 GPM. The following pre-engineered treatment system reflects the equipment already existing on site:

Nominal Tank Surface Area/Tank (sq.ft.)
Model No. Capacity (GPM) Clarifiers Filters
TR-840A 1400 140 280

2.02 WATER TREATMENT FILTER UNIT REHABILITATION
A. Adsorption Clarifier Section:

1. The contractor shall refurbish/repair 4 Adsorption Clarifier section(s) as shown on the contract drawings.
a. The adsorption media retention hold-down beams, fasteners, gaskets and retaining screens shall be removed to gain access to the internal. b. Beams shall be recoated as set forth in this section and set aside. c. The media retaining screen and grating assemblies shall be cleaned by power washer.
d. All gasket surfaces cleaned and free of old adhesive, sealants, and glues. e. The media hold down fasteners shall be cleaned for reuse or replace if the threads or material has been corroded or damaged.

2. The adsorption media can be removed or floated to the filter section while clarifier repairs/refurbishments are conducted.

3. The raw water inlet header shall be removed, cleaned, and inspected for damage. Any damage shall be repaired by replacing with new material or replacement of complete assembly. All stainless steel fasteners showing signs of corrosion or damage shall be replaced with new 18-8 SS/304 SS fasteners.

4. All inlet air piping shall be removed and replaced after system coating. Any Flow-EZ type air nozzles shall be replaced with new media retaining, non-clog air diffusers consisting of a slotted plastic nozzle body consisting of six slot,

0.040 inch slot size, ABS-SST material.

5. All couplings for the influent water and air headers to be fitted with new gaskets/seals.

6. For complete repair/repainting of the interior clarifier, see section regarding interior finish coating.

7. All openings and threaded areas shall be protected from epoxy coating.

8. For spot repairs: All painted mounting surfaces that show signs of rust or damage shall be sandblasted, cleaned, dried and prepared for repainting per section regarding interior finish coating.

9. A bottom media retention screen with stainless steel screen support shall be provided to prohibit mixed media from entering and coalescing with the influent and air piping. The adsorption media retention screen shall be a corrosion resistant assembly that allows free passage of water but contains the adsorption media particles.

10. A 24-inch depth of fiber ball media shall be provided. Media shall be neutrally buoyant with specific gravity of approximately 1.0. Half of the buoyant media that currently is in use shall be reused and set aside during rehabilitation. This existing material is manufactured of recycled HDPE beads. At least one-half of the beads in the bed shall be rolled to produce an elliptical shape and shall also be scarified to place a groove on the media surface. The rolled and

Packaged Water Treatment System Rehabilitation
11802-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) scarified shape provides improved floc retention inside of the clarifier bed.

Media that does not include the rolled and scarified design is not acceptable due to its lower capability of floc retention.

11. A stainless steel grating assembly shall sit above the air scour system near the bottom of the ADSORPTION CLARIFIER unit. The grating allows for free passage of water but contains the adsorption media particles.

12. Splash guards shall outline the perimeter of the ADSORPTION CLARIFIER system to prevent water from burping over the edge during the flushing process.

13. Once the AC Media is installed, new adhesive seal shall be installed for the media retaining screen and on the screens as described in the Owners’ Manual. Media hold down beams replaced and torqued per specifications.

14. The clarifier check valve shall be replaced, or the seals shall be replaced with new.

B. Filter Section:

1. The floats, level controller, and other instrumentation as required shall be removed.

2. The surface wash sweep(s) and pipework shall be removed from the washtrough.

3. The coupling in the washtrough shall be plugged.

4. The filter media shall be removed as well as any support gravel.

5. The filter underdrain shall be removed.

6. The tank shall be modified with the required tank connection to allow for an air flow into the in-bed air wash grid.

7. The interior shall be cleaned, inspected, repaired or modified as shown on the drawings prior to sandblasting and repainted as noted per the interior finish coating specification.

8. All required supports shall be properly welded and/or installed into the tank(s) as required proper installation. Additional structural supports may be required to be welded to the tank walls to provide stiffening.

9. Effluent piping shall be cleaned prior to installing the new underdrain to ensure no debris in present that could cause damage to the new underdrain during a backwash process.

10. The following procedure will be followed for installation of the underdrain assembly:
a. In-Bed Air Wash Grid:
1) The contractor shall install the in-bed air wash grid in the filter section per the manufacturer’s requirement.
2) The gravel support layers shall be installed per the required configuration.
3) The contractor shall install the in-bed air wash grid assembly into the filter section. The grid shall consist of a main air header pipe with laterals. The header will be flanged on one end and capped on the other end. The laterals shall have cut slots perpendicular to the length of the pipe and in predetermined sections along the length of the lateral pipes. The in-bed air wash assembly shall be placed at the interface of the gravel support and filter media. The assembly shall be supported with the required supports and hardware to ensure the header pipe and laterals are secure and allow air flow into the underdrain system for the filter backwash process.

Packaged Water Treatment System Rehabilitation
11802-7 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED)

11. Replacing filter media per specifications below:
a. Filter mixed media:
1) The filter media shall be a 30 inch deep mixed media separation bed composed of three materials, each of different size and specific gravity, providing uniform void distribution from coarse to fine in the direction of flow. The mixed media shall consist of the following as noted in the original equipment bills of material:
a) 18 inches of anthracite coal, MS-4, 1.0–1.1 mm ES, <1.7 SG. b) 9 inches of silica sand, MS-18, 0.35–0.45 mm ES, <1.4 SG. c) 3 inches of high-density sand, MS-21, 0.20-0.32 mm ES, <1.7 SG.
2) The filter media shall be supplied by the manufacturer and shall be shipped in bags for ease of installation.

2.03 PLANT PROCESS VALVES-ELECTRIC
A. Refer to Section 13447 for all process control valves in the sizes shown on the drawings.

B. The existing valves and actuators for influent, Adsorption Clarifier air scour, filter effluent, filter-to-waste, backwash and air assisted backwash shall be replaced with new seal kits and replacement actuators.

C. One automatic high-rate valve, one manual high-rate valve, and one manual low-rate valve is provided for backwash flow control. These valves are common to all tanks.

D. The automatic valves with motor actuator shall be provided for process valves.

Valves 1-1/2-inch and smaller shall be ball type with bronze body, brass ball, and Teflon * seats. Valves 2-inch and larger shall be wafer butterfly valves with nylon coated ductile iron disc, EPDM seat, 416SS stem and cast-iron body.

E. Motor actuators shall have 480VAC, 60 Hz supply. NEMA 4 enclosure.

F. All electric operated valves will maintain position upon loss of power.

G. A manual wafer-type butterfly valve, complete with handwheel operator, shall be provided for backwash rate setting.

H. New valves with electric motor actuators shall be provided for influent, effluent, filter to waste, Adsorption Clarifier air scour, filter air scour, and backwash inlet.

2.04 PROCESS AND CONTROL EQUIPMENT
A. Filter Level Transmitter:

1. Utilize the existing level sensor and transmitter selectively demolished from each filter unit.

B. Clarifier Headloss Transmitter and Switch:

1. Utilize the existing pressure indicating elements, transmitters, gauges, and switches selectively demolished from each filter unit.

Packaged Water Treatment System Rehabilitation
11802-8 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) C. Filter Headloss Transmitter:

1. Utilize the existing pressure indicating sensor, transmitter, and gauge selectively demolished from each filter unit.

D. Filter Backwash Switches:

1. Provide two (2) new float level switches per filter (8 total) for backwash control.

2.05 PLANT BLOWER(S) - REPLACEMENT
A. Refer to Section 11376A - Rotary Lobe Blowers for all blowers shown in drawings.

B. The treatment plant manufacturer shall supply blowers, to provide an air flow capacity for aiding in the cleaning of the Adsorption Clarifier and Filter sections during flushing and backwashing.

C. Air flow capacity for the Adsorption Clarifier flush process shall be 475 scfm at 5 psi and 950 scfm at 5 psi for the filter backwash process.

D. The blower(s) shall be positive displacement (PD) type with a Tri-Lobe design.

E. Each blower shall be provided with an inlet filter, pressure relief valve and dirty filter indicator.

2.06 REPLACEMENT VENDOR CONTROL PANEL (VCP)
A. General:

1. Vendor control panel components and construction shall be as specified in Section 17710 - Control Systems: Panels, Enclosures, and Panel Components.

2. Provide components and equipment with UL 508 listing.

3. Provide control panels with UL 508A labeled.

4. Provide intrinsically safe circuits and equipment in accordance with UL698A.

5. VCP shall be programmed, wired, and factory tested for proper operation prior to shipment.
a. Factory-assemble and wire the control panel such that field wiring only requires connections to terminals.
b. Additional testing requirements as specified in Section 17950 - Commissioning for Instrumentation and Controls.

6. Provide surge protection on the incoming power feed.

7. Provide necessary control hardware, software, and components as required for a fully functional and operational installation.

8. Provide heating, cooling, and dehumidifying equipment to maintain instrumentation and control devices within their rated operational temperature range.

9. Power supply: 120 VAC, 1-phase 60 Hz.

B. Enclosures and panel components:

1. Manufacturers: One of the following or equal:
a. nVent/Hoffman.
b. Saginaw Control & Engineering.

Packaged Water Treatment System Rehabilitation
11802-9 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED)

2. Panel shall be rated as follows, unless otherwise specified:
a. Indoor panels:
1) Electrical/control rooms: NEMA 12, powder coated mild steel. 2) Process floor: NEMA 4X:
a) Non-Corrosive Areas: Type 316 stainless steel.
b) Corrosive Areas: Polycarbonate.

3. Programmable logic controller (PLC):
a. Manufacturers:
1) Allen-Bradley:
a) CompactLogix 5380, 5069-L3 Series.
b. As specified in Section 17720 - Control Systems: Programmable Logic Controllers.
c. Provide PLC programming software system from same manufacturer as the PLC hardware manufacturer.
d. PLC Power Supply:
1) Voltage: 120 VAC.
e. I/O Modules:
1) Provide external fuses mounted on the field connection terminal block for discrete input, discrete output, and analog input I/O points. 2) Discrete modules:
a) Voltage: 120 VAC.
3) Individually isolated points are required.

4. Local operator interface (LOI):
a. As specified in Section 17721 - Local Operator Interface (LOI). b. Manufacturers: The following, no equal:
1) Allen-Bradley:
a) PanelView Plus 7.
c. General:
1) Provide the LOI graphic software system manufactured by the LOI hardware manufacturer.
2) NEMA rating shall match enclosure rating.
3) Capable of stand-alone operation in conjunction with 1 PLC. 4) Communications protocol:
a) EtherNet/IP.
5) Touchscreen operator input.
d. Display:
1) Type: TFT color.
2) Standard aspect ratio:
a) Screen size: 10-inch.

5. Network materials and equipment:
a. As specified in Section 17733 - Control Systems: Network Materials and Equipment.
1) Ethernet switches:
a) Manufacturers: The following, no equal:
(1) Allen-Bradley Stratix.
(2) Cisco.
(3) Hirschmann.
(4) N-Tron.
b) Properties:
(1) Hardware:
(a) 100/1000 BASE-FX.

Packaged Water Treatment System Rehabilitation
11802-10 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) (b) 10/100/1000 BASE-TX.
(c) No fans or moving parts.
(2) Environment:
(a) Operating temperature range: 32 to 140 degrees
Fahrenheit.
(b) Humidity: 5 to 95 percent, non-condensing.
(3) Provide Ethernet switch capable of performing basic switching without special programming or configurations. (4) Connector type:
(a) Fiber: SFP.
(b) Copper: RJ-45.
(5) Mounting:
(a) DIN Rail.

6. Provide 120 VAC to 24 VDC (or other voltages as required) power supply arrangement that is configured with several modules to supply adequate power in the event of a single module failure in either a 1+1 or N+1 configuration as required:
a. Provide automatic switchover upon module failure.
b. Alarm contacts monitored by the PLC.
c. Design power supplies so the either the primary or backup supply can be removed, repaired, and returned to service without disrupting the system operation.

7. Provide GFCI duplex 120 VAC convenience receptacle.

8. Provide NEC Class 2 power to devices requiring NEC Class 2 or SELV supply power.

9. Pilot devices:
a. Controls:
1) Power ON-OFF switch.
b. Lights:
1) Power ON-OFF indicator.

2.07 CONTROL STRATEGY
A. General:

1. Provide signals over network communication protocol as indicated on the Drawings.
a. Plant PLC monitoring I/O shall be over the network connection.

2. Coordinate signal transfer with Programmer at programming meetings as specified in Section 17050 - Common Work Results for Process Control and Instrumentation Systems.

3. Provide access to control parameters and settings.

4. PCS shall only have visibility to Vendor’s PLC. No other vendor furnished Ethernet devices shall be visible to the PCS.

5. Provide security lock out capability for vital settings and functions.

6. Provide real time clock within the PLC to select and initiate unit start times. a. Include programming functions for syncing the PLC clock with the plant network time server.

7. Refer to and coordinate with Section 17101 - Specific Control Strategies and Digital I/O Tables provided in the Contract Drawings.

Packaged Water Treatment System Rehabilitation
11802-11 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) B. Common control functions:

1. Alarms:
a. Generate alarms within the PLC logic.
b. Indicate alarms at the LOI. Enable acknowledgement from either the PCS or the LOI.
c. Use interlocks and proving timers to prevent alarms from operating due to power loss, except for loss of power alarms.

2. Analog magnitude checking:
a. Provide clamps to prevent operator-entered values (setpoints, etc.) that fall outside acceptable limits.

3. I/O filtering and processing:
1) Monitor analog input signal quality:
a) Generate alarms for over or under range inputs.

4. Display the current status of operator selections (HAND/AUTO, START/STOP, etc.) on the LOI and send those signals to the Plant Control System (PCS) for display on HMI screens.

5. PLC status:
a. Provide an LOI screen that depicts the status of the enclosure, including but not limited to the following:
1) PLC cabinet over-temperatures from high temperature switch. 2) Intrusion status on enclosures equipped with intrusion switches. 3) AC power failure.
4) DC power supply failure.

6. PLC system communication status:
a. Provide a minimum of 1 screen to display communication errors and status within the control system network and generate alarms for:
1) Communication with Plant PLC.

C. Control system requirements as specified in Sections 17100 - Control Strategies and 17101 - Specific Control Strategies.

D. Provide complete program in electronic format, unlocked, via USB drive.

2.08 SPECIFIC CONTROL STRATEGY:

A. Normal operation:

1. Provide logic to run all clarification and filtration operations automatically.

B. Absorption Clarifier Backwashing:

1. The control system shall provide means for automatically initiating a flush cycle for each Adsorption Clarifier section by a timeclock or preset adjustable clarifier headloss pressure switch.

2. An interlock shall be provided so that only one unit can be flushed at a time.

3. A selector switch shall provide override of the automatic flush initiation to allow manual flushing of each unit.

4. During the flush cycle, collected solids shall be removed by proper sequencing of valves and the blower.

5. Return to service shall be automatic.

Packaged Water Treatment System Rehabilitation
11802-12 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) C. Mixed Media Filter Backwashing and Air Scour:

1. The control system shall provide means for automatically initiating backwash and air scouring of each Mixed Media Filter by a timeclock or a preset filter headloss pressure switch or transmitter.

2. An interlock shall be provided so that only one filter can backwash at a time.

3. A selector touch button shall provide override of the automatic backwash initiation to allow manual backwash of each unit.

4. Flushing of the corresponding Adsorption Clarifier section can be initiated automatically at the PCS.

5. The control system shall automatically sequence valves, blowers, and pumps during the backwash cycle.

6. Return to service shall be automatic.

D. Backwashing Interlocks:

1. On receipt of backwash pump station low level signal from the PCS, the VCP shall prevent backwashing of additional units.

2. On receipt of backwash pump station high level signal from the PCS, the VCP shall stop production of water through all units.

E. Automatic Chemical Control:

1. Coagulant feed shall be controlled by the Aquaritrol logic within the VCP PLC.

The controller shall be capable of automatically changing chemical coagulant by pacing chemical feeder to maintain plant effluent turbidity at an established setpoint.
a. Control inputs shall be from existing turbidimeters and pH monitors. b. Control output to the coagulant feed pump shall be a speed percentage output to the PCS via the EtherNet/IP connection to control the pump stroke (or pump motor speed).

2. Operator interface:
a. The Aquaritrol Program parameters will be accessible through the control panel LOI.

F. Communication with the PCS:

1. The VCP shall receive the following signals from the PCS via the EtherNet/IP connection:
a. All setpoints shall be adjustable from the PCS.
b. Handshake signal.
c. Unit 1 run.
d. Unit 2 run.
e. Unit 3 run.
f. Unit 4 run.
g. Backwash pump station low level.
h. Backwash pump station high level.
i. Blower discharge header flow.
j. Coagulant feed pump 1 running.
k. Coagulant feed pump 2 running.
l. Coagulant feed pump 3 running.

2. The VCP shall send the following signals to the PCS via the EtherNet/IP connection:
a. Handshake signal.
b. Unit 1 ready.

Packaged Water Treatment System Rehabilitation
11802-13 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) c. Unit 1 in semi-auto mode.
d. Unit 1 in auto mode.
e. Unit 1 mode status.
f. Unit 2 ready.
g. Unit 2 in semi-auto mode.
h. Unit 2 in auto mode.
i. Unit 2 mode status.
j. Unit 3 ready.
k. Unit 3 in semi-auto mode.
l. Unit 3 in auto mode.
m. Unit 3 mode status.
n. Unit 4 ready.
o. Unit 4 in semi-auto mode.
p. Unit 4 in auto mode.
q. Unit 4 mode status.
r. Backwash in progress.
s. Flush in progress.
t. Blower 1 in auto mode.
u. Blower 1 running.
v. Blower 1 stopped.
w. Blower 2 in auto mode.
x. Blower 2 running.
y. Blower 2 stopped.
z. Blower 3 in auto mode.
aa. Blower 3 running.
bb. Blower 3 stopped.
cc. Coagulant feed pump 1 speed setpoint.
dd. Coagulant feed pump 2 speed setpoint.
ee. Coagulant feed pump 3 speed setpoint.
ff. Unit 1 influent flow.
gg. Unit 2 influent flow.
hh. Unit 3 influent flow.
ii. Unit 4 influent flow.
jj. Unit 1 influent valve in auto.
kk. Unit 1 influent valve mode.
ll. Unit 1 effluent valve in auto.
mm. Unit 1 effluent valve mode.
nn. Unit 1 air valve in auto.
oo. Unit 1 air valve mode.
pp. Unit 1 air scour valve in auto.
qq. Unit 1 air scour valve mode.
rr. Unit 1 backwash valve in auto.
ss. Unit 1 backwash valve mode.
tt. Unit 1 waste gate valve in auto.
uu. Unit 1 waste gate valve mode.
vv. Unit 2 influent valve in auto.
ww. Unit 2 influent valve mode.
xx. Unit 2 effluent valve in auto.
yy. Unit 2 effluent valve mode.
zz. Unit 2 air valve in auto.
aaa. Unit 2 air valve mode.

Packaged Water Treatment System Rehabilitation
11802-14 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) bbb. Unit 2 air scour valve in auto.
ccc. Unit 2 air scour valve mode.
ddd. Unit 2 backwash valve in auto.
eee. Unit 2 backwash valve mode.
fff. Unit 2 waste gate valve in auto.
ggg. Unit 2 waste gate valve mode.
hhh. Unit 3 influent valve in auto.
iii. Unit 3 influent valve mode.
jjj. Unit 3 effluent valve in auto.
kkk. Unit 3 effluent valve mode.
lll. Unit 3 air valve in auto.
mmm. Unit 3 air valve mode.
nnn. Unit 3 air scour valve in auto.
ooo. Unit 3 air scour valve mode.
ppp. Unit 3 backwash valve in auto.
qqq. Unit 3 backwash valve mode.
rrr. Unit 3 waste gate valve in auto.
sss. Unit 3 waste gate valve mode.
ttt. Unit 4 influent valve in auto.
uuu. Unit 4 influent valve mode.
vvv. Unit 4 effluent valve in auto.
www. Unit 4 effluent valve mode.
xxx. Unit 4 air valve in auto.
yyy. Unit 4 air valve mode.
zzz. Unit 4 air scour valve in auto.
aaaa. Unit 4 air scour valve mode.
bbbb. Unit 4 backwash valve in auto.
cccc. Unit 4 backwash valve mode.
dddd. Unit 4 waste gate valve in auto.
eeee. Unit 4 waste gate valve mode.

2.09 CHEMICAL MIXING AND FEED SYSTEMS
A. Refer to Section 11242 - Liquid Chemical Diaphragm - Type Metering Pumps.

B. Chemical feed pumps electronically controlled by the Aquaritrol PLC Program.

NOTE: Tank and mixer for liquid chemical feed system to be provided by others.

2.10 FINISH
A. Oil, grease, dirt, rust, mill scale, and foreign matter shall be removed from the interior tankage surface by a method defined by the Steel Structures Painting Council (SSPC Spec-latest revision). Tankage interior shall receive at the factory, one coat Tnemec N140-1255 primer, or equivalent, followed by one coat of Tnemec N140-15BL, or equal. The tank exterior, except the bottom, shall be painted with one coat of Tnemec N140-1255 primer, or equal. Field finish painting shall be by the contractor. Tank bottom shall be bare, for the field placement onto a coal tar or asphaltic base mastic compound to be provided and installed on the equipment base pad by the Contractor.

Packaged Water Treatment System Rehabilitation
11802-15 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED)

2.11 SPARE PARTS
A. If needed, insert required spare parts for the project. This could include but not limited to, AC retaining screen gaskets, anthracite filter media, valves and actuators, instrumentation, control panel components, touch-up paint, etc.

B. If the PLC hardware provided for the VCP and local control panels are not the same type as the Plant’s PLC system hardware, provide the following spare PLC hardware for the PLC equipment in the VCPs and LCPs.

1. 1 spare CPU for every type of CPU in the system, with programming files preloaded.

2. 1 spare network and/or communications card for every network or communications card in the system.

PART 3 EXECUTION

3.01 GENERAL REQUIREMENTS
A. Refurbishment of multiple units shall be coordinated with the Owner and Engineer to allow plant to continue to produce water if needed during the refurbishment phase. Refer to specific requirements in Section 01140 - Work Restrictions.

B. Coordination with plant control system and programmer:

1. Coordinate requirements for data transfer with PCS:
a. Include all data registers, data types, and engineering units, etc.

2. Coordinate with the ICSC and programmer for factory testing. Vendor shall supply PLC and LOI programming file prior to the testing.

3. Coordinate signal transfer with Owner at programming meetings as specified in Section 17050 - Common Work Results for Process Control and Instrumentation Systems.

3.02 TECHNICAL SERVICES
A. The field installation shall be approved by the equipment manufacturer's personnel, who is directly employed by the equipment manufacturer, and normally engaged in the field installation of the equipment specified herein.

B. The manufacturer's authorized personnel shall be present during the placement of filter Mixed Media and underdrains to instruct and observe installation for the first unit rehabilitated.

C. The manufacturer shall inspect all equipment in this section prior to start-up to confirm that all equipment is properly installed and working, both individually and as a system.

D. The manufacturer will be responsible for calibration of equipment specified herein.

E. The Manufacturer shall be present during placement of filter Mixed Media that is not pre-installed.

Packaged Water Treatment System Rehabilitation
11802-16 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED) F. The Manufacturer shall inspect the installation of all equipment in this section prior to start-up in order to verify that the equipment has been properly installed and operates properly as a system and individually.

1. Submit field reports to the Engineer.

2. The field reports should include the following items:
a. Agenda.
b. Contact time.
c. Work completed.

G. The Manufacturer after the equipment has been properly installed shall calibrate the equipment with the Owner’s operator present.

H. The Manufacturer’s representative shall be present for installation assistance described above as listed in the table in Section 3.02.K.

I. After start-up, the Manufacturer shall furnish the service of a competent technical service representative one month after Contractor’s start-up to instruct the Owner’s personnel in the operation and maintenance of the equipment for a three-day period during one trip.

J. Effluent quality laboratory analysis shall be provided by the Owner.

K. Equipment manufacturer is required to provide qualified personnel to assist the Contractor as listed in the following table.

Total
Trips
Total Duration
(Days) Description
1 2 Initial site visit for equipment inventory review
4 10 Mechanical Components; AC, filter air scour grid, and filter media installation inspection and startup
2 6 Instrumentation on-site assistance, inspection, and startup
4 8 Controls on-site assistance, inspection, and startup 1 3 Operator Training

3.03 TESTING AND INITIAL OPERATION
A. Place units in service utilizing services of equipment manufacturer's service personnel.

B. Fill the plant with liquid to test the hydrostatic design.

1. Any failure or excessive deflection shall be remedied.

C. Demonstrate proper installation and operation of all equipment with a 72-hour test.

1. Any failure is to be corrected and the system is to be retested for the specified time period.

2. Licensed operators at the water treatment plant will be responsible for actual operation of the plant.

Packaged Water Treatment System Rehabilitation
11802-17 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/11802 (CONFORMED)

3. The equipment manufacturer's service technician will be available by phone during the entire test and will provide on-site service as needed.

4. All testing, including schedules, etc. will be coordinated with the Owner, Contractor, and Engineer.

3.04 WARRANTY
A. A warranty shall be provided covering all replacement parts and workmanship for twelve months after Substantial Completion.

B. It shall be the Supplier's responsibility to provide the necessary service engineers to repair and/or replace any defective components during this warranty period including any and all travel expenses incurred for same.

END OF SECTION

Hydropneumatic Bladder Tank
13206F-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (CONFORMED) SECTION 13206F

HYDROPNEUMATIC BLADDER TANK
PART 1 GENERAL

1.01 SUMMARY
A. Section includes:

1. ASME-rated hydropneumatic bladder tank with removable bladder.

1.02 REFERENCES
A. American Society of Mechanical Engineers (ASME):

1. Boiler and Pressure Vessel Code (BPVC).
a. Section VIII-Rules for Construction of Pressure Vessels, Division 1.

B. NSF International (NSF):

1. Standard 61 - Drinking Water System Components.

1.03 DELEGATED DESIGN
A. As specified in Section 01357 - Delegated Design Procedures.

B. Equipment anchoring and bracing to structures.

1.04 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures and Section 01600 - Product Requirements.

B. Contractor is responsible for completing the Pressure Vessel Inspection Request Form that can be found at the California Department of Industrial Relations website http://www.dir.ca.gov/dosh/pressure.html#PresureVessel.

1. City will pay for the permit fees and should be listed as “Company Contact.” Contractor to coordinate point of contact with City.

C. Product data:

1. List of materials and coatings used with specifications and physical properties for each.

2. Manufacturer's standard operations and maintenance information.

D. Shop Drawings:

1. Detailed drawings or manufacturer's literature to indicate compliance with the specified requirements.

2. Dimensional drawings indicating vessel dimensions, wall thicknesses, and mounting, and anchorage requirements.

Hydropneumatic Bladder Tank
13206F-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (CONFORMED) E. Delegated Design Submittals:

1. Anchoring and bracing: Project-specific calculations with anchoring and bracing details based on support conditions and requirements to resist loads specified in Section 01850 - Design Criteria.
a. To structures for tanks installed in structures designated as seismic design category C, D, E, or F.
b. For tanks installed outdoors.
c. For tanks installed indoors and having a height to diameter ratio greater than 1.0.Installation instructions.

F. Installation instructions.

1. Manufacturer's installation instructions.

2. Equipment anchor setting template.

3. Complete details for installation of the equipment including rigging, moving, and setting into place.

G. Certifications:

1. Certification of compliance with ASME BPVC, and data reports in accordance with the ASME BPVC and other local codes as required.

1.05 WARRANTY
A. Provide manufacturer's standard warranty.

PART 2 PRODUCTS

2.01 GENERAL
A. As specified in Section 01600 - Product Requirements and Section 15050 - Common Work Results for Mechanical Equipment.

2.02 MANUFACTURERS
A. Hydropneumatic bladder tank:

1. One of the following or equal:
a. John Wood Co., JOPR-22-020.
b. Wessels Co., Model FXA 4000.
c. AAtanks., Model FXA-4000.
d. Elbi of America, Series WTL-2.

2.03 DESIGN AND PERFORMANCE CRITERIA
A. General:

1. Design, fabricate, and test tanks in accordance with the requirements of:
a. ASME BPVC.
b. As specified in Section 01850 - Design Criteria.
c. Applicable local codes and regulations.

2. Where conflicts between design criteria exist, request clarification from the Engineer.

Hydropneumatic Bladder Tank
13206F-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (CONFORMED) B. Hydropneumatic bladder tank:

1. Vertically mounted tanks, designed for the operating conditions specified:

Minimum Drawdown Volume 1,000 gallons
Maximum Diameter 8 feet
Pressure Cut-In (psi) 85
Pressure Cut-Out (psi) 120
Maximum Operating Pressure 125 pounds per square inch
Temperature Range 20 to 120 degrees Fahrenheit
Minimum Bladder Lifetime Cycles(1) 50,000
Notes:
(1) 1 Cycle = When hydropneumatic tank bladder experiences 1 duration of Cut-In to Cut-Out pressure.

2. Pressure rating: Unless otherwise indicated on the Drawings, hydropneumatic bladder tanks shall be fabricated in accordance with the ASME BPVC for unfired pressure vessels, for a design pressure rating not less than the lesser of:
a. 150 percent of the maximum operating pressure, or
b. 50 pounds per square inch gauge above the maximum operating pressure.

3. Corrosion allowance: 1/8-inch at shell, heads, and attachments.

4. Tank seal water volume shall be a minimum of 10 percent of the overall tank capacity.

2.04 MATERIALS
A. Tank:

1. Constructed using carbon steel with interior and exterior coatings in unless otherwise indicated on the Drawings.

2. Lifting lugs: Provide lifting lugs at top of tank.

3. Anchor clips:
a. Manufacturer's standard configuration, attached to tank skirt, and as required to resist design forces specified.

B. Bladder: Provide sealed bladder system to separate liquid from the steel tank and the air cushion:

1. Heavy-duty butyl rubber bladder rated for the maximum operating temperature specified.

2. Liquid contained inside the bladder through an exterior system fill connection. a. Material in direct contact with water certified under NSF-61.

3. Bladder and system connection mounted on a tank flanged connection so that bladder is replaceable through the tank flanged connection.

4. Tank factory pre-charged to 30 pounds per square inch gauge with minus 40-degree Fahrenheit dew point dry air.

Hydropneumatic Bladder Tank
13206F-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (CONFORMED) C. Nameplates and certification stamps:

1. Nameplate:
a. Each tank shall bear a stainless steel ASME nameplate. b. Each nameplate shall bear the applicable code symbol.

2. ASME Stamp:
a. Stamp applied to the tank shell.
b. Manufacturer shall be authorized by ASME to apply the applicable code symbols.

D. Fittings and attachments:

1. Fittings as specified in Section 15120 - Piping Specialties or as indicated on the Drawings.

2. Fittings larger than 1 inch shall be flanged.

3. Fittings 1 inch and smaller shall be National Pipe Thread.

E. Access openings:

1. Access openings shall be flanged and, unless otherwise indicated on the Drawings, have a nominal diameter of at least 24 inches.

2. The coverplate and flange of access openings shall each have a net thickness, after machining, of at least 1/2-inch or as required to meet the vessel design pressure.

3. Reinforce openings in accordance with the ASME BPVC.

F. Weld shell attachments for pipe supports, tank gauges, instruments, and other items as indicated on the Drawings before application of the tank interior coating.

2.05 APPURTENANCES
A. Air charging valve:

1. Standard Schrader valve or approved equal industry standard.

B. Air relief valve:

1. Air relief valve shall be sized by manufacturer in accordance with ASME BPVC for unfired pressure vessels.
a. Drain connection located on tank air side.
b. Manufacturer's standard size for the tank size.

C. Manual air vent valve:

1. Screwdriver operated, low projection type vent for shallow height clearance installation; or needle valve, designed for the tank pressure rating at the maximum operating temperature with 1/8-inch male pipe thread connection.

2. Manufactures: One of the following or equal:
a. Armstrong, 505A.
b. Bell and Gossett, 4V.

D. Pressure gauge:

1. Pressure gauges shall be as specified in Section 17404 - Pressure/Vacuum Measurement: Gauges, with a 0 to 125 pounds per square inch gauge dial range.

2. Pressure gauge shall be separated from the tank by ball valves and insulating bushings.

Hydropneumatic Bladder Tank
13206F-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (CONFORMED) E. Anchors:

1. Anchoring to structures:
a. As indicated on the Drawings and as specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry.

2.06 FABRICATION
A. Welding:

1. Weld and test welding in accordance with ASME BPVC.

2. Excessive reinforcement shall be ground down to within the ASME BPVC requirements, and as required to install the lining systems.

3. Internal corners and edges shall be ground to a 1/8-inch radius, or a greater radius if required by the lining system.

B. Protective coating:

1. Interior surfaces: Factory coated with high solids epoxy coating as specified in Section 09960 - High-Performance Coatings.

2. Exterior surfaces: Factory coated with primed for field coating as specified in Section 09960 - High-Performance Coatings.

PART 3 EXECUTION

3.01 PREPARATION
A. Anchoring and bracing to structures:

1. Prepare equipment anchor setting template(s) and use to position anchors during construction of supporting structure(s).

2. Install anchors of type and material indicated on approved anchoring designs.

3. Install anchors with embedment indicated on approved anchoring designs.

3.02 INSTALLATION
A. Install tanks:

1. As indicated on the Drawings.

2. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

3. In accordance with accepted manufacturer’s installation instructions and accepted anchorage design details.

B. Field finishes:

1. Not required: Provide tanks with manufacturer's factory-applied coating.

3.03 COMMISSIONING
A. As specified in Section 01756 - Commissioning.

B. Source Testing (Factory Acceptance Tests):

1. Not witnessed.

Hydropneumatic Bladder Tank
13206F-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13206F (CONFORMED)

2. Furnish: Test reports and Manufacturer’s Certificate of Source Testing. a. Certification of compliance with ASME BPVC for design and performance criteria specified with be considered acceptable Source Testing.

C. Installation Verification:

1. Furnish: Documentation not required.

D. Functional Testing:

1. Equipment testing:
a. Hydropneumatic bladder tank(s).

E. System Testing:

1. As specified in Section 01756 - Commissioning, Attachment G.

2. As specified in this Section.

3. Furnish Manufacturer’s Certificate of Functional Compliance.

END OF SECTION

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) SECTION 13207AD3

STRAND-WOUND CIRCULAR PRESTRESSED CONCRETE TANK WITH A

TYPE I CORE WALL AND DOMED ROOF

TABLE OF CONTENTS
PART 1 GENERAL................................................................................................................. 2

1.01 SUMMARY ................................................................................................................... 2

1.02 REFERENCES ............................................................................................................. 2

1.03 SUBMITTALS............................................................................................................... 4

1.04 NON-RESPONSIVE BID.............................................................................................. 6

1.05 QUALITY ASSURANCE............................................................................................... 6

1.06 DESIGN CRITERIA...................................................................................................... 8

1.07 PRODUCT DELIVERY, STORAGE, AND HANDLING ..............................................12

1.08 PROJECT CONDITIONS ...........................................................................................12

1.09 SEQUENCING AND SCHEDULING ..........................................................................13

1.10 GUARANTEE .............................................................................................................14 PART 2 PRODUCTS ............................................................................................................14

2.01 MATERIALS ...............................................................................................................14

2.02 SOURCE QUALITY CONTROL .................................................................................22

2.03 COMPLIANCE TESTING ...........................................................................................22 PART 3 EXECUTION ...........................................................................................................22

3.01 SUPERVISION ...........................................................................................................22

3.02 INSTALLATION..........................................................................................................22

3.03 FLOOR .......................................................................................................................23

3.04 CONCRETE ...............................................................................................................24

3.05 SEISMIC CABLES......................................................................................................25

3.06 PRESTRESSING .......................................................................................................25

3.07 ABRASIVE BLASTING...............................................................................................29

3.08 SHOTCRETING .........................................................................................................30

3.09 CLEANING .................................................................................................................33

3.10 DISINFECTING ..........................................................................................................33

3.11 FILLING AND WATERTIGHTNESS TESTING ..........................................................33 Replace Section in its Entirety

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) PART 1 GENERAL

1.01 SUMMARY
A. Work includes:

1. This section specifies the design and construction of an AWWA D110, Type 1, strand-wrapped circular prestressed concrete tank, furnishing, installation, testing, and disinfection. The tank shall consist of: foundation, underdrain system, concrete membrane floor slab, cast-in-place concrete core wall, cast-in-place concrete domed roof, and all associated appurtenances. The core wall shall be vertically post-tensioned with thread bars, prestressed circumferentially with machine-wrapped 7-wire galvanized strand, and protected with several coats of shotcrete. The foundation shall be constructed with continuous shallow concrete spread footings below the perimeter wall.

The concrete floor shall be constructed with a concrete slab below grade.

2. In the event of a discrepancy between this section of the Specifications and any other section of the Specifications, this section shall govern.

3. The Tank Contractor shall furnish all labor, materials, tools, and equipment necessary to design, construct, disinfect, and test the prestressed concrete tank.

B. Related sections:

1. Section 01410 - Regulatory Requirements.

2. Section 01759 - Water Leakage Test for Concrete Structures.

3. Section 02300 - Earthwork.

4. Section 03102 - Concrete Formwork.

5. Section 03150 - Concrete Accessories.

6. Section 03200 - Concrete Reinforcing.

7. Section 03300 - Cast-in-Place Concrete.

8. Section 03931 - Epoxy Injection System.

9. Section 09960 - High-Performance Coatings.

1.02 REFERENCES
A. Abbreviations:

1. cfm - cubic feet per minute.

2. f’c - specified compressive strength of concrete.

3. g - gravitational constant, equal to 32.2 feet per second squared.

4. gpm - gallons per minute.

5. ksi - kips per square inch.

6. MG - million gallons.

7. mph - miles per hour.

8. pcf - pounds per cubic foot.

9. psf - pounds per square foot.

10. psi - pounds per square inch.

11. PVC - polyvinyl chloride.

12. sec - seconds.

B. Definitions:

1. Core Wall - That portion of the concrete tank wall that is circumferentially post-tensioned.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

2. Prestressed Concrete - Concrete in which internal compressive stresses of such magnitude and distribution have been introduced through post-tensioning to offset tensile stress development from service loads.

3. Prestressing Reinforcement - High-strength steel used to prestress the concrete tank wall.

4. Rebound - The shotcrete material that ricochets off of the receiving surface and falls.

5. Shotcrete - Pneumatically applied wet mortar or concrete used for embedment protection of the circumferential prestressed wall reinforcement.

6. Strand - A symmetrically arranged and helically twisted assembly of 7 high-strength steel wires used for prestressing reinforcement or as nonprestressed seismic cables.

7. Stressing Machine - May refer to the automated wrapping machinery used to post-tension the strand around the tank circumference or vertical post-tensioning equipment used to post-tension vertical thread bars.

8. Tank Contractor - A qualified tank manufacturer and/or contractor that specializes in the design and construction of an AWWA D110 type of tank specified herein.

9. Tank Prestressor - A contractor or sub-contractor that specializes in the design of an AWWA D110 type of tank and specializes in the construction of the prestressed elements of the tank, such as the strand/wire wrapping and the vertical post-tensioning of the wall.

10. Tendon - High-strength thread bar, including end anchorages, used to impart vertical prestressed forces to the tank wall.

11. Wire - High-strength, cold-drawn steel wire used to assemble strands.

C. Reference Standards:

1. American Concrete Institute (ACI):
a. ACI 301-16 - Specifications for Structural Concrete, 2016. b. ACI 305.1-14 - Specification for Hot Weather Concreting, 2014. c. ACI 306.1-90 - Standard Specification for Cold Weather Concreting, 1990. d. ACI 350-06 - Code Requirements for Environmental Concrete Structures and Commentary, 2006.
e. ACI 350.1-10 - Specification for Tightness Testing for Environmental Engineering Concrete Containment Structures and Commentary, 2010. f. ACI 350.3-06 - Seismic Design of Liquid-Containing Concrete Structures and Commentary, 2006.
g. ACI 350.5-12 - Specifications for Environmental Concrete Structures, 2012.
h. ACI 372R-13 - Design and Construction of Circular Wire- and Strand-Wrapped Prestressed Concrete Structures, 2013.
i. ACI 506R-16 - Guide to Shotcrete, 2016.
j. ACI 506.2-13 - Specification for Shotcrete, 2013.

2. ASTM International (ASTM):
a. A 185 - Standard Specification for Steel Welded Wire Reinforcement, Plain, for Concrete.
b. A 416 - Standard Specifications for Steel Strand, Uncoated Seven-Wire for Prestressed Concrete.
c. A 475 - Standard Specification for Zinc-Coated Steel Wire Strand. d. A 615 - Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) e. A 706 - Standard Specification for Low-Alloy Deformed and Plain Bars for Concrete Reinforcing.
f. A 722 - Standard Specification for Uncoated High-Strength Steel Bars for Prestressed Concrete.
g. C 33 - Standard Specification for Concrete Aggregates. h. C 150 - Standard Specification for Portland Cement.
i. C 171 - Standard Specification for Sheet Materials for Curing Concrete. j. C 618 - Type F Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete.
k. D 570 - Standard Test Method for Water Absorption of Plastics. l. D 624 - Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers.
m. D 638 - Standard Test Method for Tensile Properties of Plastics. n. D 746 - Standard Test Method for Brittleness Temperature of Plastics and Elastomers by Impact.
o. D 747 - Standard Test Method for Apparent Bending Modulus of Plastics by Means of a Cantilever Beam.
p. D 792 - Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement.
q. D 1056 - Standard Specification for Flexible Cellular Materials- Sponge or Expanded Rubber.
r. D 2000 - Standard Classification System for Rubber Products in Automotive Applications.
s. D 2240 - Standard Test Method for Rubber Property-Durometer Hardness.

3. American Society of Civil Engineers (ASCE):
a. 7-10 - Minimum Design Loads for Buildings and Other Structures.

4. American Water Works Association (AWWA):
a. C652 - Standard for Disinfection of Water-Storage Facilities. b. D110-13 - Wire- and Strand-Wound, Circular, Prestressed Concrete Water Tanks, 2013.

5. Code of Federal Regulations (CFR):
a. Part 1910 - Occupational Safety and Health Standards (OSHA).

6. NSF International (NSF):
a. 61 - Drinking Water System Components - Health Effects.

7. U.S. Army Corps of Engineers (USACE):
a. CRD C 572 - Corps of Engineers Specifications for Polyvinylchloride Waterstop.

1.03 SUBMITTALS
A. Product data:

1. Waterstops:
a. Submit samples, prints, and complete physical property data covering waterstops.
b. Laboratory test reports: Submit reports indicating that average properties of polyvinyl chloride waterstops material and finish conform to requirements specified in this Section.

2. Epoxy grouting equipment: Submit product information.

3. Neoprene bearing pads: Submit product information.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

4. Stressing machine:
a. Submit a description of the proposed equipment.
b. Submit calibration reports for force recording equipment used installation of vertical thread bars and circumferential prestressing.

B. Shop drawings:

1. Drawings showing all plan views, sections, and details of the tank construction, including, but not limited to, all structural elements, all appurtenances, connections, joints, waterstop, roof hatches, vents, ladders, fall arrest and protection systems, guardrails, piping, pipe penetrations, pipe supports, sub-grade preparation, base liners, tank instrumentation, and materials for roof drainage and conductance.

2. Drawings of entire prestressing operation showing vertical thread bar and circumferential strand placement with associated schedules and intermediate lock-off elevations, prestressing bar and strand size, ducts for vertical thread bars, and anchorage details.

3. Drawings for placement and detailing of all reinforcing steel.

4. Drawings showing:
a. Neoprene bearing pads and methods of pad installation. b. Waterstop and methods of installation.
c. Sponge filler pads or sleeves and methods of installation. d. Exterior coating system.

5. All shop drawings shall be signed and sealed by a registered California structural or civil engineer.

C. Design submittals:

1. Structural calculations for all aspects of the structural design of the tank, along with calculations for prestressing reinforcement, elongation estimates, soil capacity checks, and calculations for any other structural design aspect.

2. Concrete mix designs in accordance with Section 03300 - Cast-in-Place Concrete and additional provisions specified herein.

3. Shotcrete mix designs in accordance with the provisions specified herein.

4. Admixtures to be used in the concrete and/or shotcrete and their purpose.

5. All design submittals shall be signed and sealed by a registered California structural or civil engineer.

D. Tank responsibility statement:

1. The Tank Contractor shall submit a statement attesting that they have assumed responsibility for the tank design and construction. The statement shall be signed and sealed by the Tank Contractor’s
engineer-in-responsible-charge of the tank design. No other submittal items will be reviewed until a satisfactory statement has been received.

E. Qualification Statement:

1. Failure to submit a qualifications statement package will be deemed an irregularity, which will cause bid to be rejected as nonresponsive.

2. Submit pertinent information that demonstrates conformance with Quality Assurance requirements specified herein.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

3. To include:
a. Company history, contact person(s), address, and telephone number. b. Project references with owner and engineer’s contact information. c. Name and work history of the on-site project manager to be assigned to the project.

F. Quality control submittal:

1. Certificates of Compliance:
a. Thread Bars: Submit certified test reports that verify bars and anchorage meet specified material standards.
b. Waterstop: Submit certificates certifying that waterstops provided on this project meet or exceed physical property requirements of current USACE CRD C 572.
c. Circumferential prestressing: Submit certified test reports for each size, heat, and reel that verify conformance to applicable ASTM standards for materials, strength, and yield properties.

G. Test reports:

1. Strand and vertical thread bar prestressing records.

H. Manufacturer's instructions:

1. Tank appurtenances: Submit manufacturer’s installation instructions.

1.04 NON-RESPONSIVE BID
A. Qualifications statement package:

1. Submit a qualifications statement package with the bid. The package shall contain information as required per Section 1.03.E.

2. Failure to submit a qualifications statement package will be deemed an irregularity that may cause bid to be rejected as non-responsive.

1.05 QUALITY ASSURANCE
A. Qualifications:

1. Singular Responsibility:
a. It is the intent of these Specifications to create singular responsibility for design, construction, and performance of the prestressed concrete tank.

The design and construction of all aspects of the foundation, floor slab, core wall, columns, prestressing, shotcrete, and roof of the tank shall be performed by the Tank Contractor.
1) No portion of the work on the tank shall be subcontracted unless:
a) Prior acceptance is obtained from the Engineer; and
b) The Tank Contractor’s on-site project manager personally supervises the work of any subcontractors and their personnel. b. If the Tank Contractor believes that any requirement of this Section represents a departure from its normal recommendations that will affect the quality or performance of the tank, notify the Engineer in writing of such concerns. For each provision of concern, cite the relevant

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-7 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) paragraphs of this Section and indicate the Tank Contractor’s recommended modifications or alternatives to those provisions. 1) Acceptance of Tank Contractor’s alternatives shall be at the discretion of the Engineer, and the decision of the Engineer shall be final.

2. The specified tank shall be designed and constructed by the Tank Contractor.

The Tank Contractor shall be experienced in the design and construction of circumferentially prestressed tanks with cast-in-place concrete core wall sections using freed neoprene bearing pad connections at the top and base of the wall, PVC waterstops, seismic cables placed between the wall and the foundation, and a domed concrete roof deck.
a. No Tank Contractor is considered qualified unless it has designed and built the following projects in its own name:
1) At least then circumferentially prestressed concrete tanks conforming to AWWA D110, Type I in the last 20 years.
2) At least 5 circumferentially prestressed concrete tanks conforming to AWWA D110, Type I used for water storage that have been in successful operation for at least 5 years.
3) At least 5 circumferentially prestressed concrete tanks with domed roofs conforming to AWWA D110, Type I that are 1.5 MG or larger in the last 10 years.
b. The Tank Contractor shall have in its employ a design engineer with a minimum of 10 years of experience in the design of AWWA D110 Type I tanks. The design engineer shall have been the engineer of record for a minimum of 10 AWWA D110 Type I tanks designed for and constructed by the Tank Contractor in its own name. The design engineer shall be licensed as a civil or structural engineer in the state of California. c. The Tank Contractor shall have in its employ for this project a team consisting of an on-site project manager, concrete foreman, shotcrete foreman, shotcrete nozzleman, and prestressing foreman, each of whom shall have constructed in the last 10 years a minimum of five AWWA D110 Type I tanks having a capacity of 1.5 MG or greater. 1) Experience gained on shotcrete pool and ditch construction will not be considered as qualifying experience for nozzleman.
2) Skill of nozzleman:
a) Capable of applying thin coats of even and uniform thickness. b) Certified shotcrete nozzleman in accordance with ACI 506R.

3. Experience in the design and construction of AWWA D110 Type II, Type III, or Type IV tanks will not be accepted as demonstrating the qualifications required by the preceding paragraphs.

4. Soil Anchors:
a. Qualifications and Experience:
1) The design, construction, testing and quality control of the deep foundation system shall be the responsibility of the Tank Contractor.

The Tank Contractor may subcontract labor for the deep foundation installation under the Tank Contractor’s direct supervision.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-8 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

1.06 DESIGN CRITERIA
A. Except as modified herein, the prestressed concrete tank shall be designed and constructed in compliance with the provisions of AWWA D110 for strand-wound circular, prestressed concrete water tanks with Type I core wall.

1. The prestressed concrete tank core wall shall be of cast-in-place concrete construction. Shotcrete or precast core walls are not permitted under the provisions of this Section.

B. Standards/Codes:

1. The prestressed concrete tank shall be designed and constructed as specified herein, and in accordance with provisions of the following standards and codes:
a. AWWA D110-13.
b. ACI 350-06.
c. ACI 350.3-06.
d. ASCE 7-10.

2. Where conflicts between the requirements of this Section and of these standards and codes occur, the more restrictive provisions shall apply. a. Exception: Requirements for concrete cover and member thickness shall be as specified in this Section.

C. Load criteria and requirements to be used by the Tank Contractor in the design calculations:

1. Capacity: 2.0 MG usable storage below the maximum water elevation shown on the Drawings.
a. Inside Diameter: 115 feet.

2. Dead Load: shall be the estimated weight of all permanent imposed loads. a. Unit weight of concrete shall be taken as 150 pounds per cubic foot. b. Unit weight of steel shall be taken as 490 pounds per cubic foot.

3. Fluid Load: shall be the lateral pressure and weight of the water when the tank is filled to a level that is 6 inches above the elevation of the top of the overflow elevation as indicated on the Drawings (to allow for overflow conditions). a. Unit weight of water shall be taken as 62.4 pounds per cubic foot.

4. Roof Live Load:
a. Uniform: 40 pounds per square foot, non-reducible.
b. Any concentrated reactions due to the use of fall protection equipment. c. Application of fall protection equipment reaction loads shall be applied concurrently with uniform roof live load. However, load factors for the load case where the combination of uniform and fall protection reactions are considered simultaneously may be taken as unity.

5. Construction Loads:
a. Loads applied to the tank during construction shall be accounted for in the design of the tank.

6. Geotechnical Report: See Section 00800 - Supplementary Conditions.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-9 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

7. Foundation Loads: the tank foundation shall be proportioned so that the net foundation bearing pressure shall be less than the net allowable soil bearing pressure specified in the Geotechnical Report.
a. The allowable soil bearing pressure may be increased by 33 percent for load combinations that include wind or seismic loads.
b. Settlement Loads: the tank shall be designed to resist the effects of total and differential settlement indicated in the Geotechnical Report.

8. The final design for wind and seismic loads shall consider a reduced capacity to resist sliding due to any membranes placed between the bottom of the concrete foundation and the soil.

9. Wind Load: determined in accordance with ASCE 7-10.
a. Exposure Category C.
b. Basic Wind Speed = 104 mph (3-sec gust).
c. Importance Factor, IW = 1.00.

10. Seismic Design Criteria: seismic design shall be based on the applicable sections of AWWA D110-13, ASCE 7-10, and ACI 350.3-06. The seismic forces shall be calculated using each code separately. The total base shear used for design shall be the maximum value obtained from the three codes used.
a. When comparing force and base shear values, those obtained from ASCE and ACI shall be based on service level loads.
b. AWWA D110-13 Design Criteria:
1) Occupancy Category, IV.
2) Importance Factor, I = 1.50.
3) Mapped Spectral Acceleration for Short Period, SS = 1.48 g. 4) Mapped Spectral Acceleration for 1-second Period, S1 = 1.58 g. 5) Site Class D.
6) Impulsive Structure Coefficient, RI = 3.5.
7) Convective Structure Coefficient, RC = 1.0.
8) Overstrength Factor,Ωo, 2.0.
c. ASCE 7-10 Design Criteria:
1) Risk Category IV.
2) Mapped Spectral Acceleration for Short Period, SS = 1.48 g. 3) Mapped Spectral Acceleration for 1-second Period, S1 = 1.58 g. 4) Site Class D.
5) Response Modification Factor, R = 3.25.
6) Overstrength Factor,Ωo, 2.0.
7) Long-period Transition Period, TL = 12 sec.
8) Importance Factor, I = 1.50.
d. ACI 350.3-06 Design Criteria:
1) Mapped Spectral Acceleration for Short Period, SS = 1.48 g. 2) Mapped Spectral Acceleration for 1-second Period, S1 = 1.58 g. 3) Site Class D.
4) Response Modification Factor, R = 3.25.
5) Long-period Transition Period, TL = 12 sec.
6) Importance Factor, I = 1.50.
e. The sloshing wave height shall be taken as the larger of the values calculated in accordance with AWWA D110-13, ASCE 7-10, and ACI 350.3-06.
1) In the event that the calculated height of the “sloshing wave” exceeds the freeboard of the tank (distance from the maximum operating

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-10 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) water surface elevation to the bottom of the roof deck at the wall), the tank and the roof deck shall be designed to accommodate the dynamic effects as follows:
a) Any portion of the convective sloshing wave that extends above the top of the tank wall (bottom of the roof deck at the wall) shall be calculated and applied to the roof deck as an uplift pressure in accordance with section 15.7.6.1.2.c of ASCE 7-10.
b) Additionally, the mass of any confined portion of the convective sloshing wave shall be included with the impulsive mass used in the estimation of the hydrodynamic forces applied to the tank for design, also in accordance with section 15.7.6.1.2.c of ASCE 7-10.
c) Any revisions to the tank, including but not limited to, the roof elevation, water overflow level, and roof slab that are required to meet the specified provisions to resist sloshing loads and its effect on the hydrodynamic design shall not result in additional costs to the Owner.

11. Temperature and moisture gradients: effects due to changes in temperature and due to temperature and moisture gradients across structural members shall be considered in the design. Refer to Section 01850 - Design Criteria.

12. Prestressing application: forces applied to the wall shall be considered in the design of the wall, especially where wall penetrations result in locally increased prestressing force application to the wall.

13. On screen mesh size and screen open area:
a. The vent shall be sized for a minimum rate of 750 cfm or the rate of volumetric withdrawal assuming the outlet pipe has ruptured, whichever is greater.

14. Overflow Design Capacity: 2,000 gpm with maximum 9-inch water height over the top of the overflow weir.

D. Floor Slab and Wall Footing Requirements:

1. The floor slab shall be designed as a membrane floor slab as defined in ACI 372R, Section 3.2.2 that is not less than 18 inches thick; or the floor slab may be designed as a slab-on-ground with a thickness not less than 18 inches.

2. Construction joint locations shall be submitted to the Engineer for review. a. Where construction joint spacing exceeds 50 feet, provide means for reducing shrinkage below the limit specified in Section 03300 - Cast-in-Place Concrete in proportion to the extent the spacing limit of 50 feet is exceeded.
b. Use of construction joints in the floor slab shall be minimized.

3. Minimum ratio of floor slab reinforcement area to concrete area shall be

0.5 percent for each orthogonal direction, with bars spaced no greater than 12 inches on center or 2 times the slab thickness, whichever is less.

4. Minimum concrete cover over reinforcing steel shall be in accordance with Table 3.3.2.3 of ACI 350.5.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-11 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

5. Wall footings shall bear below floor sub-grade and shall be placed monolithically with the floor slab.
a. The bottom of the wall footing shall be embedded a minimum of 60 inches below the lowest finish grade elevation over the outside edge of the footing or as indicated on the Drawings, whichever is greater.

6. Design of the floor and wall footing shall consider the differential base stiffness and at concrete encasements or hard points below the floor and wall footing.

E. Wall Design Requirements:

1. The prestressed concrete tank wall shall be constructed with a cast-in-place core wall that is circumferentially wrapped with 7-wire strand prestressing reinforcement at the exterior and encapsulated within protective shotcrete layers. The core wall is to be vertically prestressed with post-tensioned thread bars.

2. The thickness of the core wall shall not be less than 10 inches thick.

3. The minimum average vertical compressive axial prestress in the core wall provided by the vertical prestressing reinforcement shall be 200 psi after deduction for all losses.
a. Vertical prestressing reinforcement shall be spaced on average no greater than 50 inches on center or 7 times the thickness of the core wall, whichever is less.

4. The minimum average circumferential residual prestress compression in the wall shall not be less than 200 psi for the aboveground portion of the tank wall, tapering linearly to 50 psi at 6 feet below grade.

5. The connection between the base of the wall and the foundation shall be an anchored flexible connection in accordance with Section 4.2.1 and Figure 4B of AWWA D110-13.
a. The joint at the base of the wall shall permit unrestrained radial expansion and contraction of the wall relative to the foundation. b. The joint at the base of the wall shall provide restraint against lateral seismic loads acting tangentially to the wall.
c. Restraint cables shall be provided between the core wall and the foundation to resist seismic loads. The cable installation shall be detailed in a manner that does not introduce radial restraint between the wall and the foundation.

6. The joint at the wall to the roof shall allow the roof to expand and contract radially while maintaining full vertical load bearing capacity under all conditions.

7. The minimum concrete cover over non-prestressed reinforcing shall be in accordance with Table 3.3.2.3 of ACI 350.5.

8. Vertical non-prestressed reinforcing:
a. Provide vertical non-prestressed reinforcing over the full height of the wall. b. The tensile stress shall be limited to a maximum of 18,000 psi. c. Reinforcing size shall not exceed 3/4-inch in diameter. d. Reinforcing spacing shall not exceed 12 inches on center.

F. Domed Rood Design Requirements:

1. The roof shall be a domed, cast-in-place concrete structure. Columns or interior supports will not be allowed.

2. The minimum thickness of the domed roof shall be 4 inches.

3. The dome shall be fixed to the tank wall.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-12 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

4. Minimum concrete cover over reinforcing steel shall be in accordance with Table 3.3.2.4 of ACI 350.5.

5. The reinforcing steel for the roof structure shall be sized in accordance with ACI 350 with the environmental durability factor, Sd, applied to limit flexural stress. Reinforcing steel shall be proportioned and distributed to control cracking for normal environmental exposure.

6. The effects of thermal expansion and contraction shall be accounted for in the design of the roof structure. Appurtenances and roof connections shall be detailed to limit restraint to the thermal radial movement.

7. The Tank Contractor shall submit, for the Engineer’s approval, a plan showing the roof configuration that includes construction joints. Construction joints shall incorporate 6-inch PVC waterstop.

G. Uplift:

1. Tank to resist uplift forces from design flood elevation of 604 feet, in tank empty conditions.

1.07 PRODUCT DELIVERY, STORAGE, AND HANDLING
A. Prestressing steel shall be adequately packaged for protection against corrosion and physical damage during shipping and storage.

B. Prestressing steel that has rusted or has otherwise sustained damage will be rejected.

C. Prestressing material and appurtenances delivered to project site: Store off ground on planks, supported by 4-by-4 timber. Cover with polyethylene sheeting or treated paper to prevent exposure to moisture.

1.08 PROJECT CONDITIONS
A. Environmental requirements:

1. Cold weather epoxy grouting of tendons:
a. In cold weather, and especially during frosts, take special precautions to avoid freezing of epoxy.
b. In event that grouting procedure cannot be postponed, keep wall temperature above freezing point with hot blankets or by other means acceptable to Engineer.

B. Site safety precautions:

1. Take every precaution to keep personnel and visitors outside the area of danger from breaking prestressing strands or bars.

2. At no time shall anyone stand in the line of stressed circumferential strand.

3. No work shall be performed by anyone, other than the prestressing crew within 100 feet of circumferential wrapping operation or vertical bar stressing operation.

4. Where access to the site by unauthorized persons cannot be controlled while prestressing work is in progress, or where property lines are less than 100 feet from the wrapping operation, erect protective fencing to prevent breaking strands from endangering such persons.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-13 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) C. Welding:

1. Perform no welding to anchor plates after prestressing tendons have been assembled.

2. Do not use prestressing steel as ground for welding operations.

1.09 SEQUENCING AND SCHEDULING
A. Polyvinyl chloride waterstops:

1. Welding of polyvinyl chloride waterstops: Prior to installing waterstops in forms, demonstrate ability to weld acceptable joints in waterstops.

2. Quality of welded joints: Are to be subject to acceptance of the Engineer.

B. Restrictions on shotcrete operations:

1. Abrasive Blasting:
a. Do not commence prior to the completion date of curing period of tank corewall.
b. Do not commence until all form tie holes have been drypacked.

2. Wind conditions: Do not apply shotcrete under such strong wind conditions that considerable amount of cement and moisture is removed by wind from mortar spray between nozzle and surface on which shotcrete is applied.

3. Temperature requirements:
a. Peak temperature during day must be expected to rise to at least 55 degrees Fahrenheit.
b. Night temperature of first night after shotcrete application must not be expected to drop below 33 degrees Fahrenheit.

4. Cold weather conditions:
a. Application of shotcrete under cold weather conditions is solely at the Tank Contractor's risk.
b. Shotcrete may be applied in cold weather provided surfaces are not frozen.
c. Damage to shotcrete: Whenever rain or frost damages shotcrete which has not had chance to take set:
1) Remove and replace such shotcrete.
2) Remove damaged shotcrete before applying any new layers of shotcrete.
d. Type III Portland cement may be utilized for shotcrete for cold weather application.

C. Ultimate initial prestressing force for vertical thread bars: Do not apply until concrete compressive strength in walls reaches specified strength.

D. Wrapping of circumferential prestressing strands:

1. May start when core wall concrete has reached a compressive strength of 3,000 pounds per square inch and intermediate layers of shotcrete coats over prestressing strands has reached a compressive strength of 250 pounds per square inch or 12 hours after the shotcrete coat was applied, whichever is greater.

2. The compressive stress in the concrete due to wrapping shall not exceed 55 percent of f'c at any time.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-14 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) E. Backfilling of tanks:

1. Do not backfill until and unless the Engineer has accepted leakage testing results and the concrete has reached specified strength.

1.10 GUARANTEE
A. The Tank Contractor shall guarantee the structure against defective materials or workmanship for a period of 2 years from the final date of completion. If any materials or workmanship prove to be defective within 2 years, those materials shall be replaced or repaired by the Tank Contractor at the expense of the Tank Contractor.

B. Access hatch (through-roof access) warranty:

1. Manufacturer is to warranty proper operation and against defects in material or workmanship for a period of 5 years.

PART 2 PRODUCTS

2.01 MATERIALS
A. General:

1. Materials of construction for the strand-wound prestressed concrete tank shall be selected by the Tank Contractor, subject to the limitations of this Section.

B. Concrete:

1. Concrete shall conform to Section 03300 - Cast-in-Place Concrete and ACI 301, except as modified herein.

2. Unless otherwise specified, all concrete for tank construction shall have a minimum 28-day compressive strength of 4,000 psi.

3. The concrete for the tank floor, footings, and pipe encasement shall conform to the following requirements.
a. Concrete shall not be air entrained.
b. The coarse and fine aggregate shall meet the requirements of ASTM C33 and sized to meet member thickness and clearance requirements of ACI 350.
c. Superplasticizer and water-reducing admixtures shall be incorporated into the concrete for the floor slab and wall footing.

4. Proportioning for concrete shall be in accordance with ACI 301.

5. All concrete shall have a maximum water-soluble chloride ion concentration of

0.06 percent by weight of cement.

6. Cement shall conform to ASTM C 150, Type I or Type II.

7. Accelerating and retarding admixtures shall not be incorporated into the any concrete mix without prior acceptance by the Engineer.

C. Reinforcing Steel:

1. Reinforcing steel shall be new billet steel Grade 60 meeting the requirements of ASTM A 615.

2. Reinforcing steel that is to be welded shall be ASTM A 706, Grade 60.

3. Reinforcing steel shall be accurately fabricated and shall be free from loose rust, scale, and contaminants.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-15 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

4. Reinforcing steel shall be accurately positioned on supports, spacers, hangers, or other reinforcement and shall be secured in place with wire ties or suitable clips. Rebar chair supports shall be provided in accordance with Section 03200 - Concrete Reinforcing.

D. Prestressing Materials:

1. 7-wire strand:
a. Prestressing strand shall be in accordance with ASTM A 416 prior to hot-dip galvanizing.
b. Individually hot-dip galvanize each wire of strand before forming the wires into a strand.
c. Hot-dip galvanized 7-wire strand shall meet following minimum requirements:

Physical Characteristics Required Results
Nominal Strand Diameter Before Galvanizing 3/8 inch
Nominal Area After Galvanizing 0.089 square inch
Nominal Weight Per 1,000 Linear Feet 303 pounds
Pitch of Strand 12 to 16
Minimum Yield Strength At 1 Percent Extension 180,000 psi Minimum Ultimate Strength After Galvanizing 240,000 psi Elongation In 24 Inches At Fracture 4.5 percent
Weight Of Zinc Coating per ASTM A475 0.85 ounces per square foot

2. High strength thread bars:
a. Thread bars and deformations: Hot rolled.
1) Thread bars with cold rolled threads or with quenched or tempered steels will not be permitted.
b. Deformations of thread bars:
1) Provide deformations that form screw-thread suitable for mechanically coupling lengths of thread bar and provide positive attachment of anchor assemblies.
2) Provide deformations that are in accordance with ASTM A 722, Type II requirements and are uniform such that any length of bar may be cut at any point and internal threads of coupler designated for that size of bar can be freely screwed on bar.
c. Tensile and physical properties: Bars manufactured in accordance with ASTM A 722, Type II requirements are to comply with following minimum requirements:

Physical Characteristics Required Results
Nominal Diameter 1.25 inches or 1.375 inches
Nominal Cross-Sectional Area 1.245 square inches or

1.577 square inches

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-16 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) Physical Characteristics Required Results
Nominal Bar Weight 4.39 pounds per foot or

5.56 pounds per foot
Minimum Tensile Stress 150 ksi
Minimum Yield Stress at 0.2 Percent Offset 120 ksi
Elongation At Rupture In Gauge Length of
20 Bar Diameters
4 percent minimum
Maximum Carbon Content of Bar 0.55 percent
d. Nuts: Minimum ultimate strength shall be 95 percent of minimum ultimate strength of thread bar.

3. Anchorages for vertical post-tensioned thread bars:
a. All post-tensioned prestressing shall be secured at the ends by means of approved permanent anchoring devices, which shall hold the prestressing steel at a force not less than 95 percent of the guaranteed minimum tensile strength of the prestressing steel.
b. The load from the vertical prestressing anchoring device shall be distributed to the concrete through steel bearing plates and shall not exceed the values specified by the Post-Tensioning Institute (PTI), Guide Specifications, Paragraph 3.1.7.
c. Fully threaded anchor connections shall be used at both ends of the vertical prestressing bar, which shall incorporate a spherical-shaped bearing surface to match the conical surface in the bearing plate. d. Wedge anchors shall not be used for permanent anchor hardware.

4. Testing of Prestressing Material:
a. Provide mill certificates.
b. Prior to preparation of shop drawings and installation of vertical thread bars, provide proof that the thread bar anchorage system meets the requirements specified herein.
c. Before any prestressing operations may be started, the Tank Contractor shall calibrate all recording equipment at an approved testing laboratory to the satisfaction of the Engineer.
d. All continuous force readings for either the vertical or the circumferential prestressing operations shall be developed with electronic (or the substantial equivalent) force (strain gauge method) sensing transducers, all having a maximum nonlinearity error of +/- 0.5 percent and a maximum hysteresis error of +/- 0.25 percent.

5. Anchor pockets for vertical thread bars:
a. Consist of steel cans fabricated from steel tubing, hot-dip galvanized after cutting and subsequently welded to the top bearing plate. b. Provide adequate means for flushing of vertical ducts during concrete placement.

6. Ducts for vertical thread bars:
a. Duct enclosures shall be standard 1.25 inch or 1.375 inch diameter PVC pipe class 160 or class 200, respectively, unless otherwise specified on the Drawings.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-17 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) b. Threaded hose connections shall be provided at the top of each duct for water flushing.
c. All ducts shall be provided with expandable valves to facilitate the injection of epoxy grout after prestressing.

7. Epoxy grout for vertical thread bars:
a. The vertical thread bar system shall offer complete 2-part epoxy protection of the prestressing steel inside ducting and anchors. b. Portland cement grout will not be accepted.

E. Seismic Cables and Sleeves:

1. Seismic cables:
a. Hot-dipped galvanized 7-wire strand:
b. Prestressing strand shall be in accordance with ASTM A 416 prior to galvanizing and ASTM A 475 after galvanizing.
c. Individually hot-dip galvanize each wire of strand before forming the wires into a strand.
d. The galvanized strand shall have a minimum ultimate tensile strength of 240,000 psi.
e. The cables shall be installed to connect the wall and the foundation. f. The minimum weight of zinc galvanic coating shall be 0.85 ounces per square foot.
g. Only 7-wire strand will be allowed. Single wire will not be allowed.

2. Neoprene sleeves for seismic cables shall conform to SCE-43 of ASTM D 1056 and as further modified by the following:

Physical Characteristics Required Results
Compressive deflection 9 to 13 psi
Shore 00 durometer 60 to 80 pcf
Density 12 to 28 pcf
Water absorption by weight 5 percent
Temperature range: Low (flex without cracking)
High continuous
High intermittent
-40 degrees F
150 degrees F
250 degrees F
Compressive set (average): 1/2-inch sample
compressed at 50 percent for 22 hours at 70 degrees F
and 24 hour recovery
15 to 35 percent
Maximum linear shrinkage during heat aging (7 days at
158 degrees F)
5 percent
Minimum tensile strength 175 psi
Minimum elongation 180 percent
Resilience (bayshore - percent rebound average 1/2-inch thickness at 72 degrees F)
20 to 40 percent
F. Shotcrete:

1. General:
a. Shotrcrete shall conform to ACI 506.2, except as modified herein. b. Minimum compressive strength of shotcrete shall be 4,500 psi at 28 days.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-18 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) c. Shotcrete used in the tank construction shall have a maximum water soluble chloride ion concentration of 0.06 percent by weight of cement. d. Rebound materials shall not be reused in any form for shotcrete

2. Portland cement shall meet the general requirements in Section 03300 - Cast-in-Place Concrete.

3. Fine aggregates:
a. Fine aggregates shall meet the requirements as specified in Section 03300 - Cast-in-Place Concrete and the following paragraphs. b. Coarse sand:
1) Shotcrete applications: Use well graded coarse sand, unless otherwise noted.
2) Gradations:

Sieve Size Percent Passing by Weight
3/8 inch 100
Number 4 95-100
Number 8 80-100
Number 16 50-85
Number 30 25-60
Number 50 10-30
Number 100 2-10
c. Fineness modulus shall be between 2.7 and 3.0.

4. Water shall be in accordance with Section 03300 - Cast-in-Place Concrete.

5. Class F fly ash shall conform to ASTM C618 and shall not make up more than 20 percent of the cementitious material in the shotcrete mix.

G. Elastomeric Materials:

1. Bearing pads shall be natural rubber or neoprene:
a. Natural rubber bearing pads shall contain only virgin natural polyisoprene as the raw polymer and the physical properties shall comply with ASTM D 2000 Line Call-Out M4AA414A13.
b. Neoprene bearing pads shall have a hardness of 40 to 50 durometer, a minimum tensile strength of 1,500 psi, a minimum elongation of 500 percent, and a maximum compressive set of 50 percent. Pads shall meet the requirements of ASTM D 2000 Line Call-Out M2BC410 A14 B14 or 2 BC 415 A1 4 B14 for 40 durometer material.

2. Sponge filler shall be closed-cell neoprene or rubber conforming to ASTM D 1056, Type 2, Class A, and Grade 3. Compression deflection limited to 25 percent at 2 to 5 psi.

H. Waterstops:

1. Requirements:
a. Material: Polyvinyl chloride.
b. Size and type:
1) Centered at construction joints in cast-in-place concrete: 6-inch flat ribbed type.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-19 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) 2) At tank walls to tank wall-footing joints: 9-inch wide with 1-inch diameter hollow bulb ribbed type.
3) Type not allowed: Dumbbell type.
c. Physical characteristics:

Physical Characteristics Test Method Required Results
Specific Gravity ASTM D 792 Not less than 1.3
Hardness ASTM D 2240 70 to 90 Type A Shore
durometer
Tensile Strength ASTM D 638 Not less than 2,000 pounds per square inch
Ultimate Elongation ASTM D 638 Not less than 300 percent Alkali Extraction CRD C 572 7 day weight change between minus 0.1 percent and plus

0.25 percent. Hardness change
within 5 points.

Low Temperature Brittle
Point
ASTM D 746 No sign of cracking or chipping
at minus 35 degrees Fahrenheit
Water Absorption ASTM D 570 24 hours, not more than

0.15 percent
Accelerated Extraction
Tensile
CRD C 527 Not less than 1,600 pounds per
square inch
Stiffness in Flexure ASTM D 747 Not less than 600 pounds per square inch
Tear Resistance ASTM D 624 225 pounds per square inch
Weight Requirements
Thickness 3/8 inch
Center Bulb Outside
Diameter
1 inch nominal
Allowable Tolerances
Width Plus or minus 3/16 inch
Thickness Plus or minus 1/32 inch
d. Manufacturers: One of the following or equal:
1) Burke Concrete Accessories, Inc.
2) Greenstreak PVC Waterstops, Sika Corporation.
3) Kirkhill Rubber Company.
4) Williams Products, Inc.
5) Vinylex Corporation.

I. Tank Appurtenances:

1. General:
a. Provide and install all appurtenances as shown on the Drawings and as specified herein.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-20 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

2. Piping:
a. Inlet: As indicated on the Drawings.
b. Outlet: As indicated on the Drawings,
c. Overflow piping and overflow cone: As indicated on the Drawings.

3. Pipe Supports:
a. Provide as required to adequately support piping under all load and operating conditions.
b. Refer to Section 15061 - Pipe Supports.

4. Ladders:
a. Conforming to all requirements of OSHA and as indicated on the Drawings.
1) Provide brackets and fasteners required for support and secure mounting to tank structure.
2) Rungs: solid bar stock.
3) Welds: fillet or full penetration as appropriate to the condition. 4) Fasteners Ladder bolts, concrete anchors, nuts, washers, and flush steel inserts: Type 316 stainless steel.
b. Interior:
1) Materials: Type 304/304L stainless steel.
2) Fall protection: Fall arrest device as specified in the following paragraphs. Material to match that of ladder. Provide removable center rail extension projecting at least 48 inches above top rung of ladder.
c. Exterior:
1) Materials: As indicated on the Drawings.
2) Fall protection: “Saf-T-Climb” as indicated on the Drawings. 3) Anti-climb door: Per ladder manufacturer. Material to match that of the exterior ladder.
d. Horizontal lifeline fall protection system: As indicated on the Drawings. e. Fall arrest device consisting of sliding/locking mechanism with safety belt and belt attachment to center climbing rail.
1) Device material: Type 304 stainless steel.
2) Devices: To include following items, all fabricated of device material unless otherwise accepted by the Engineer:
a) Rails: Lengths as required.
b) Brackets: Complete with brackets necessary for attaching rail to ladders.
c) Removable rail extension: 48-inch long.
3) Sleeve assemblies and safety belts: 2.
4) Manufacturers: The following or equal:
a) Norton Company, Air Space Device Division, Cerritos, CA, Saf-T-Climb with SAF-T-NOTCH RAIL and SAF-T-LOCK
SLEEVE.

5. Access hatches (through-roof access):
a. Sizes: Nominal size(s) as indicated on the Drawings. b. Material and construction:
1) Door leaf/leaves: Aluminum diamond pattern plate with reinforcement if required for spans provided.
2) Frame: Minimum 1/4-inch thick, aluminum channel with anchor flange around perimeter.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-21 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) 3) Door hardware: Equip doors with following:
a) Hinges: Minimum 2 heavy forged stainless steel hinges and pins for each leaf.
b) Operators, hold-open and handle: Spring operators and automatic hold-open arm with release handle for each leaf. c) Lock: A Type 316 stainless steel snap lock with fixed handle shall be mounted on the underside of 1 cover. In addition, the lock shall be a cylinder style with a threaded security cover plug. d) Seals: Leaf seals shall be dust and watertight.
e) Drainage coupling: 1-1/2-inch coupling located in front right corner of frame. Drain shall be installed to drain to the exterior side of the tank, adjust curb height as required.
4) Finish: Manufacturer's standard mill finish.
5) Manufacturers: One of the following or equal:
a) Bilco Co., Type JD-AL.
b) Babcock-Davis Associates, Inc., Type AM or GT.
c) Nystrom, Inc.

6. Grating, Guardrail, and Miscellaneous Fabrications:
a. Refer to Section 05500 - Metal Fabrications.
b. Materials: As indicated on the Drawings.

7. Roof Ventilator:
a. Size: As required to meet the air flow design requirements, but not less than indicated on the Drawings.
b. Materials and construction:
1) Aluminum components.
2) Stainless steel anchors.
3) Flashing shall wrap over the edge of the concrete curb and extend down a minimum of 2 inches.
4) 2-inch aluminum filters.
5) Insect screens.
6) 12-inch tall base.
7) Fiberglass hood insulation.
c. Manufacturers: The following or equal:
1) Greenheck Fabra Hood.
d. Finish: Manufacturer’s standard mill finish.

J. Form ties:

1. General: The requirements of this Section supplement the form ties requirements stated in Section 03102 - Concrete Formwork.

2. Requirements:
a. Form ties for forming system selected for concrete other than corewall:

Cone-snap tie or flat bar type with waterstops.
b. Form ties for forming system selected for tank corewall: Tapered ties.

K. Wall Forms: As specified in Section 03102 - Concrete Formwork, regular plywood forms may be used for forming of circular walls, as long as there are no straight sections longer than 36 inches at any place around the outside circumference of such walls.

1. Forms shall be designed to resist the construction loads for full height wall pours.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-22 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) L. Polyethylene sheeting:

1. Minimum 6 mils thick and in accordance with ASTM C 171.

M. Granular leveling base:

1. Material shall meet the requirements for aggregate base course specified in Section 02050 - Soils and Aggregates for Earthwork.

N. Epoxy injection materials: As specified in Section 03931 - Epoxy Injection Systems and the following products:

1. Epoxy materials: Nontoxic to potable water.

2. Grout injection pipes: Provide with positive mechanical shutoff valves.

O. Materials for repair of chipped out concrete areas:

1. Epoxy bonding agent: As specified in Section 03071 - Epoxies.

P. Membrane Liner:

1. Thickness: Minimum 30 mil.

2. Material: Impermeable PVC.

3. Manufacturers: One of the following or equal:
a. York Manufacturing, Inc., Wasco Seal.
b. Watersaver Co., Inc. equivalent product.
c. Palco Linings, Inc. equivalent product.
d. Install liner per manufacturer’s recommendations to provide a waterproof layer below the tank foundation as indicated on the Drawings.

2.02 SOURCE QUALITY CONTROL
A. Concrete testing:

1. As specified in Section 03300 - Cast-in-Place Concrete.

2.03 COMPLIANCE TESTING (NOT USED)
PART 3 EXECUTION

3.01 SUPERVISION
A. The Tank Contractor shall provide a full-time on-site project manager or site superintendent during all aspects of tank construction.

3.02 INSTALLATION
A. Waterstops:

1. General: The requirements of this Section supersede the waterstop requirements stated in Section 03150 - Concrete Accessories.

2. Requirements:
a. Install in concrete joints where indicated on the Drawings. b. Connect the ends of the radial waterstop in the wall footing joints to the circumferential waterstop in the wall to wall footing joint and to the circumferential waterstops in the floor to wall-footing joints if they should exist.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-23 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) c. Provide waterstop in each joint in water-bearing structures, whether indicated on the Drawings or not.
d. Provide waterstops that are continuous.
e. Set accurately to position and line indicated on the Drawings. f. Hold and securely fix edges in position at intervals of not more than 12 inches and secure in manner that they cannot move during placing of concrete.
g. A hog-ring or nail may be driven through both ends of the waterstop to facilitate placing and tying of waterstops to reinforcing steel forms or form-ties.
h. Tank Contractor's option: One of the following:
1) Use waterstop tie wires at not more than 12 inches on centers, near outer ribs, to tie waterstops into position.
2) Use special clips.
i. Waterstop terminations: Terminate 3 inches from top of finished surfaces of walls and slabs unless otherwise specified or indicated on the Drawings.
j. Installation of waterstops:
1) Install so that joints are watertight.
2) Provide field welded polyvinyl chloride waterstop joints such as unions, crosses, ells, and tees.
3) Make all splices to waterstop in accordance with manufacturer's recommendations.
4) Clean waterstops of all concrete, dirt, and foreign matter.

B. Form and accessories removal:

1. General: The requirements of this Section supercede the form and accessories removal requirements stated in Section 03102 - Concrete Formwork.

2. Requirements:
a. Other forms supporting concrete and shoring: Remain in place as follows:
1) Sides of footings, sides of slabs, and columns: 24 hours minimum. 2) Core walls: 12 hours minimum.

C. Neoprene bearing pads:

1. General:
a. Secure bottom surface of pads by positive attachment to structure such that horizontal crawling is prevented.

D. Closed cell neoprene joint fillers and sleeves (“sponge filler”):

1. When joint filler pads or sponge filler sleeves are indicated on the Drawings or specified, place materials in correct position before concrete is placed against them.

2. Holes and joints in pads are to be filled with caulking to prevent passage of mortar or concrete from 1 side of the joint to the other.

3.03 FLOOR
A. Prior to placement of the floor reinforcing, a 6-mil polyethylene moisture barrier shall be placed over the leveling base material. Joints in the polyethylene shall be overlapped a minimum of 6 inches.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-24 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) B. Prior to placement of the floor concrete, all piping that penetrates the floor shall be set and encased in concrete to the limits indicated on the Drawings. Provide waterstops at the joints between the encasement and the concrete floor slab where indicated on the Drawings.

C. The vertical waterstops between the wall and footing shall be placed and supported to locate the center bulb within the joint as indicated on the Drawings and as required by the Tank Contractor. The waterstop shall be spliced using a thermostatically controlled sealing iron and each splice shall be successfully spark tested prior to encasement in concrete.

D. The floor shall be poured without construction joints, except as otherwise allowed by the Engineer. There shall be no construction joints between the floor and wall footing.

3.04 CONCRETE
A. All concrete shall be conveyed, placed, finished, and cured as specified in Section 03300 - Cast-in-Place Concrete, except as modified herein.

B. Requirements:

1. Cold joints:
a. Cold joints in floors, roof slabs, and wall footings are not allowed. b. Continuously cover joints with new concrete, and thoroughly integrate through vibration, even if it means that horizontal passes of only 6 inches in width can be made until additional concrete and equipment becomes available to permit wider passes in concrete placement.

2. Blockouts or other types of wall openings: Do not provide openings other than those indicated on the Drawings.

C. Weather Limitations:

1. Unless specifically authorized in writing by the Engineer, concrete shall not be placed without special protection during cold weather when the ambient temperature is below 35 degrees Fahrenheit and when the concrete is likely to be subjected to freezing temperatures before initial set has occurred and the concrete strength has reached 500 psi. Concrete shall be protected in accordance with ACI 306.1. The temperature of the concrete shall be maintained in accordance with the requirements of ACI 301 and ACI 306.1. All methods and equipment for heating and for protecting concrete in place shall be subject to the approval of the Engineer.

2. During hot weather, concreting shall be in accordance with the requirements of ACI 305.1.

3. Placement of concrete during periods of low humidity (below 50 percent) shall be avoided when feasible and economically possible, particularly when large surface areas are to be finished. In any event, surfaces exposed to drying wind shall be covered with polyethylene sheets immediately after finishing, or flooded with water, or shall be water cured continuously from the time the concrete has taken initial set. Curing compounds may be used in conjunction with water curing, provided they are compatible with coatings that may be applied later and if they are degradable.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-25 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) D. Finishes:

1. Tank Designer to define concrete finishes in accordance with manufactures specifications.

E. Curing:

1. Except where specified herein, concrete curing shall be as specified in Section 03300 - Cast-in-Place Concrete.

2. Requirements:
a. Any concrete surface that is designated to receive paint or upon which any material is to be bonded: No curing compound shall be used. b. Concrete designated to be painted: Water or plastic membrane cure. c. Tank core walls: Water curing.
d. Floor slab:
1) The floor shall be cured by flooding with water and shall remain saturated for a minimum of 7 days after placement.
2) Alternatively, the floor slab may be cured with a sprayed-on curing compound and prepared as follows:
a) After the surface is dry to the touch, a 6-mil thick polyethylene sheet shall be carefully taped and sealed to the concrete surface and kept on such surface for as long as possible, but not less than 7 days, to minimize the loss of moisture trapped between the polyethylene sheet and the concrete.
b) Alternatively, heavy curing blankets may be used in lieu of the polyethylene sheet.
e. Roof slab: Water or plastic membrane cure.
f. Other concrete surfaces: Water curing.

F. Testing Cast-in-Place Concrete:

1. All concrete testing shall be in accordance with Section 03300 - Cast-in-Place Concrete, except as noted herein.

2. Testing shall be at the expense of the Tank Contractor, and shall be conducted by an independent testing agency approved by the Engineer.

3.05 SEISMIC CABLES
A. Requirements:

1. Provide seismic cables to connect wall and wall footing.

2. Quantity and spacing of seismic cables shall be as indicated on the Shop Drawings.

3. Where necessary, seismic cables shall be pre-bent before placing units in wall and wall footing.

4. Tie seismic cables to lower horizontal circumferential tie-bar for vertical prestress tendons as indicated on the Drawings.

5. In wall-footing, tie seismic cables to radial footing bars.

3.06 PRESTRESSING
A. Circumferential Prestressing Equipment:

1. The circumferential stressing system shall produce a continuously, electronically (or substantial equivalent) monitored permanent stress or force recording along its full length as it is being applied and the stress variation in

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-26 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) any strand at any point around the circumference shall not be greater than +/- 1.5 percent of the ultimate strength of the steel. In addition to this recording, any system which deflects the tensioned prestressing material between the tensioning device and the wall after it has left the tensioning device, shall provide a similar continuously monitored stress or force record along its full length as it is being applied to the wall. These recordings shall show that either before or after deflection that the stress variation in the prestressing material at any point around the circumference shall not be greater than +/- 1.5 percent of the ultimate strength of the steel.

2. Due to prior instances of force measurement inaccuracies and the inherent problems associated with hand-held stressometers, no manually recorded force readings will be accepted. This requirement shall be strictly followed.

3. Any wrapping that does not meet the stress tolerances specified and/or cannot meet the requirements of above will not be accepted and will be removed at the expense of the Tank Contractor. The Tank Contractor is responsible for all costs associated with meeting the specified tolerances.

4. Since intermittent force applications can result in an unequal stress distribution around the wall (due to friction losses), the prestressing system shall be capable of applying a continuous wrapped force at any point around the circumference within the specified tolerances. Circumferential stressing systems based on jack-operated cable or rod-type tendons (such as those placed inside of ducts incorporated in the corewall or placed manually around the exterior of the corewall) will not be allowed.

5. Since wrapping systems which utilize single solid prestressing material will not provide the desired bond between the prestressing material and the shotcrete and since single solid prestressing material will not provide an adequate safety factor against failure, only machine wrapping systems which utilize 7-wire prestressing strandwrapping will be allowed.

B. Circumferential Prestressing Application:

1. All cracks in the core wall and floor slab shall be repaired as specified following the circumferential prestressing of the tank walls.

2. Wrapped strand shall be anchored to the wall at least once for every coil or reel.

3. Permanently anchoring 1 strand to a previously wrapped strand will not be permitted. Wrapped strand ends shall be joined by suitable splicing methods that shall develop 90 percent of the full strength of the strand.

4. Use of different alloys in the splicing material shall not be permitted.

5. The clear vertical spacing between any 2 wrapped strands shall be 1.5 strand diameters or 3/8-inch, whichever is larger. A 1/4-inch construction tolerance shall apply to strand spacing, as well as to this minimum spacing requirement.

6. All wrapped strand not meeting the spacing requirements shall be spread by approved methods or shall otherwise be removed.

C. Vertical Prestressing Equipment:

1. The Tank Contractor shall provide a continuously, electronically (or substantial equivalent), monitored permanent force elongation record from zero to full force at the final lock-off for all of the vertical prestressing work.

2. The ordinate of the permanent recording shall show the elongation in inches and the abscissa shall show the force in pounds or kips.

3. Manually recorded force and elongation readings will not be accepted.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-27 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

4. The vertical prestressing machinery shall have automatic electronic tensioning cut-off devices or equivalent means to ensure that the specified force and elongation is not exceeded at any time during any thread bar stressing operation.

5. The force readings at the stressed bar ends, immediately after lock-off, for any stressing operation, on any thread bar, shall not fluctuate more than +/- 1.5 percent (of the minimum ultimate strength of the steel) from the desired average force setting.

6. The applied force, immediately after lock-off for the final stressing operation on any thread bar, shall be no less than 72 percent of the ultimate strength of the steel and the applied force before lock-off shall be no greater than 75 percent of the ultimate strength of the steel.

D. Vertical Prestressing Application:

1. All permanent anchor hardware shall have a ball-shaped threaded nut that can be screwed down on to a matching cone-shaped bearing surface in the bearing plate after the desired tension on the anchor hardware and/or prestressing steel has been applied.

2. The number and spacing of the thread bars shall not be altered under any condition.

3. High-strength thread bars shall be used for vertical prestressing.

4. All ducts shall be clean and free of water and deleterious materials that would impair bonding of the grout or interfere with grouting procedures.

5. Grout injection pipes shall be fitted with positive mechanical shutoff valves, which shall not be removed within the first 24 hours.

6. Grouting of thread bars shall begin at the lowest grout connection.

7. Each vertical thread bar duct shall be pumped until the entire nut at the top anchor has been covered with epoxy.

8. In cold weather, and especially during frosts, special precautions must be taken to avoid the freezing of grout. In the event that the grouting procedure cannot be postponed, the wall temperature must be kept above the freezing point with hot blankets or by other approved means.

9. Upon completion of the vertical stressing and grouting operation, all anchor pocket areas above the anchor nuts shall be dry packed with a 1 part cement to 2 parts sand mortar mix immediately after the epoxy coating on the inside can surface has become tacky, or alternatively, the metal can may be filled with concrete aggregates and epoxy.

10. The inside surfaces of any metal cans to be dry packed shall be coated with a 2 part epoxy. Dry packing shall not proceed until the epoxy coat has become tacky. The dry pack surface shall be finished flush with the adjoining concrete surface.

11. Damaged PVC tubing shall be replaced unless repairs are made and approved by the Engineer.

12. Vertical thread bar components shall be assembled off the ground and as detailed on the Shop Drawings. All vertical thread bars must be fully assembled before they are installed in the forms.

13. Vertical thread bars shall be accurately placed and fastened securely in place to reinforcing steel and form ties to prevent movement during placement of concrete.

14. All vertical thread bars must be flushed with water from the top immediately upon completion of the concrete vibrating operation. Water shall be introduced

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-28 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) through a taped-off hole in the wooden lids on the anchor pockets and be permitted to drain through the bottom grout tube. Flushing shall not be accomplished by introducing water through the bottom connection. Should a thread bar duct not flush properly, the Engineer shall be notified immediately.

15. Cleaning of ducts with air only (not water), or removal of water with air from the bottom connection, will not be permitted.

16. Placing of vertical thread bars shall be done to proper locations, elevations, and alignments, with a maximum tolerance of plus or minus 1/4 inch.

17. All vertical thread bars shall be properly tied at the anchor plates and shall be tied with No. 4 bars at intervals of 24 inches or less between the anchor plates.

The maximum permissible misalignment of the anchor plate to the vertical thread bar is +/- 2.5 degrees.

18. Anchor plates must be installed at right angles to the thread bar alignment near the anchor. Anchor plates must be installed with long sides, aligned parallel with the wall forms and secured to prevent their rotation while concrete is placed.

19. Unless indicated otherwise on the Plans, the minimum concrete cover around steel anchor pockets and bearing plates shall be 1.5 inches.

20. The vertical clearance between bottom anchor plate and the waterstop at the base of the tank walls shall be no less than 2 inches nor more than 4 inches.

E. Circumferential and Vertical Prestressing Operations:

1. The maximum initial electronically recorded steel stress shall not exceed 75 percent of the guaranteed minimum ultimate strength of the steel at any time during or after stressing.

2. An automatic, continuously electronically (or substantial equivalent) monitored permanent recording of the applied force, at any point on the strand, at any point on and around the tank wall, must be made during the entire circumferential prestressing application. All such recordings must be based on a continuous sensing of the applied force on the strand between the tensioning drum and the wall when, and as, the strand is being wrapped and laid on the wall.

3. The force setting on wrapping and vertical thread bar stressing machinery shall be such that the applied forces fall within the specified minimum or maximum stress or force limitations; the force setting shall be corrected immediately when the applied force falls outside the required force tolerance limitations.

4. In the event that the stressing machinery is incapable of holding the applied forces within the specified stress or force limitations, the Engineer will order, at the expense of the Tank Contractor, the removal and replacement of such machinery in favor of a different unit capable of maintaining such tolerance requirements.

5. The loss in stress in post-tensioned prestressing steel due to creep and shrinkage of concrete and sequence stressing is to be assumed as 25,000 psi.

The final stress is the average initial stress reduced by the stress loss of 25,000 psi.

6. The final force is the steel section multiplied by the final stress.

7. The final force for the vertical thread bars shall be no less than the required final force shown on the Shop Drawings.

8. The initial force for the circumferential wrapped strand shall be no less than the required initial force shown on the Shop Drawings.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-29 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

9. The continuous, electronically produced force application chart during the wrapping application becomes the property of the Owner.

10. An automatic, continuously electronically (or substantial equivalent) monitored and simultaneously recorded force-elongation reading must be made for each vertical stressing application.

11. The force-elongation reading must represent the true relationship between the elongation at any given point of the vertical stressing operation and the applied force on the prestressing steel at that same point.

12. The force-elongation relationship must be constantly maintained from the beginning, starting with the removal of the slack to the point of lock-off and complete release of the force on the vertical prestressing steel after retraction of the stressing piston or equivalent stressing device.

13. All electronically produced force-elongation readings during the vertical thread bar stressing operations become the property of the Owner.

14. After the concrete core wall has reached the specified 28-day compressive strength, the vertical thread bars shall be stressed.

15. Circumferential wrapping shall not start until the vertical thread bars have been stressed.

16. In the event gaps between concrete core wall and wrapped strand develop that exceed 3/8 inch, discontinue wrapping. Before resuming any wrapping, either:
a. Build-up walls with shotcrete to provide proper curvature before resuming any wrapping.
b. If acceptable to Engineer, drypack gaps after wrapping is completed and before shotcreting is started.

17. Wrapping over intermediate shotcrete coats or built-up shotcrete areas may commence 12 hours after shotcrete has been applied, or when the shotcrete has reached a strength of 250 psi, whichever duration is longest.

18. Prestressing strand exposed to excessive temperatures greatly increases the possibility of irrevocable damage to the strand such as steel embrittlement, stress corrosion, and strand splitting. The temperature of the prestressed strand during wrapping shall not be allowed to increase by more than 50 degrees at any time during application due to stressing technique.

19. All vertical thread bar ducting and anchors (both vertical and circumferential prestressing) shall be pressure grouted with an approved 2 part water insensitive epoxy and approved epoxy grouting equipment.

3.07 ABRASIVE BLASTING
A. Exterior surfaces of concrete walls shall be prepared prior to the commencement of any shotcreting or strand wrapping, to remove all deteriorated concrete and bond-inhibiting contaminants. The surface preparation shall achieve a minimum profile of International Concrete Repair Institute (ICRI) CSP5 over a minimum of 90 percent of the surface area required to be prepared. The prestressing operator who is performing the abrasive blasting shall make available to the inspector an ICRI surface preparation sample to assist with evaluation of the surface preparation.

B. The concrete surface shall have no traces of laitance, form-oil, original surface smoothness, or surface color.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-30 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) C. In order to mitigate environmental concerns, conform to environmental constraints, and achieve the desired profile, the Tank Contractor shall utilize either a self-contained mechanical etching or shot blast system, combined with a vacuum recovery system, or a high pressure water jetting system. Abrasive blasting systems which rely on sandblasting or steel shot without a vacuum recovery system, or systems that have not been used successfully in the past to prepare surfaces for shotcreting and standwrapping, will not be permitted.

3.08 SHOTCRETING
A. Shotcrete Equipment:

1. Shotcrete mixing shall be in conformance with the requirements of Section 03300 - Cast-in-Place Concrete.

2. The delivery equipment shall be of an approved design and size that has given satisfactory results in similar previous work.

3. The equipment must be capable of discharging mixed materials into the hose under close control and it must be able to deliver a continuous smooth stream of uniformly mixed material at the proper velocity to the discharge nozzle, free from slugs of any kind.

4. The nozzle shall be of a design and size that will insure a smooth and uninterrupted flow of materials.

5. Delivery equipment shall be thoroughly cleaned at the end of each shift.

6. Equipment parts shall be regularly inspected and replaced as required.

7. The capacity of the compressor shall be large enough that the minimum amount of air to be available at the nozzle shall be no less than 400 cfm, irrespective of whether or not air from the same air supply is used for other purposes.

B. Placement and Testing of Shotcrete:

1. Shotcrete shall be applied by an ACI 506 certified nozzleman.

2. Manually applied shotcrete shall be applied with the nozzle held at a small upward angle not exceeding 5 degrees and constantly moving during application in a smooth motion with the nozzle pointing in a radial direction toward the center of the tank. The nozzle distance from the prestressing shall be such that shotcrete does not build up or cover the front face of the wire or strand until the spaces behind and between the prestressing elements are filled.

3. Unless applied by an automated shotcrete process, total cover coat thickness shall be controlled by shooting guide wires. Vertical wires shall be installed under tension and spaced no more than 2 feet apart to establish uniform and correct coating thickness. Monofilament line (100 pound test) or 18 or 20 gauge high tensile strength steel wire shall be used. Guide wires shall be removed after placement of the cover coat.

4. Shotcrete applied by an automated shotcrete process shall be applied using the wet mix only. Nozzles shall be kept mounted on power driven machinery enabling the nozzle to travel parallel to the surface to be sprayed at a uniform linear or bi-directional speed. The nozzle shall be kept at a uniform constant distance from the surface, always maintaining a right angle spray of the material to the surface. The high velocity impact shall be developed pneumatically by injecting compressed air at the nozzle.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-31 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

5. Testing:
a. Testing shall be by an independent testing laboratory, acceptable to Engineer, and engaged by and at the expense of the Tank Contractor. b. Test shotcrete in accordance with ACI 506, except as specified herein.

One test panel shall be made for each of the following operations: core wall, cove, wire cover, and cover coat. Test panels shall be made from the shotcrete as it is being placed, and shall, as nearly as possible, represent the material being applied. The method of making a test sample shall be as follows: A frame of wire fabric (1 foot square, 3 inches in depth) shall be secured to a plywood panel and hung or placed in the location where shotcrete is being placed. This form shall be filled in layers simultaneously with the nearby application. After 24 hours, the fabric and plywood backup shall be removed and the sample slab placed in a safe location at the site. c. The sample slab shall be moist cured in a manner identical to that used for the regular surface application. The sample slab shall be sent to the testing laboratory. Nine 3-inch cubes shall be cut from the sample slab and subjected to compression tests in accordance with current ASTM Standards. Three cubes shall be tested at the age of 7 days, three shall be tested at the age of 28 days, and three shall be retained as spares.

C. Shotcrete Placing and Finishing:

1. Shotcrete shall be applied in a steady, uninterrupted flow. Should the flow become intermittent for any cause, the machine operator shall direct the nozzle away from the work until it again becomes constant, or shut off the flow of materials.

2. The nozzle shall be held at approximately right angles to the surface and shall be kept at the proper and the same distance from the surface dictated by good practice standards for the type of application, type of nozzle and air pressure employed.

3. Sufficient time shall be allowed for each layer of shotcrete to set up so it may take the next layer without sagging.

4. The shotcrete shall be started at the bottom of the wall until all wrapped strand has been covered. Subsequent shotcrete layers may be applied from the top down or from the bottom up at the discretion of the Tank Contractor.

5. While the nozzle travels around the wall, the nozzle shall be raised or lowered at a uniform rate in such a manner that an adequate overlapping of coatings and a uniform finish will develop.

6. The nozzle shall be spiraled up or down around the tank to either the top or the bottom of the wall or to the termination of the intermediate strand layer.

7. To ensure proper penetration around the strand and proper conveyance of the material through the hose, a 5- to 7-inch slump of the mortar at the pump is recommended.

8. The application of the shotcrete in the number and thickness of layers specified herein is mandatory for proper penetration of shotcrete behind prestressing material and to reduce shrinkage due to more uniform in-depth drying of the shotcrete.

9. Each layer of wrapped prestressing steel shall be covered with shotcrete until a minimum clear cover of 3/8-inch or the diameter of the strand, whichever is greater, has been placed over the prestressing steel.

10. The final cover coat, to make up for the full thickness of shotcrete over the final strand layer, shall be applied in at least 3 layers of equal thickness.

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-32 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED)

11. Each layer of shotcrete shall be completed for the full circumference of the tank and substantially the full height of that layer before the next layer of shotcrete may be applied.

12. All shotcrete coatings shall be built up in layers of approximately 3/8-inch in thickness until the final required thickness has been obtained. The Tank Contractor shall demonstrate by a reliable means that the proper thickness of shotcrete has been obtained with each layer applied.

13. Unless otherwise specified on the Drawings, the minimum shotcrete cover over all wrapped steel shall not be less than the following:
a. For shotcrete in contact with soil: 2 inches.
b. For other shotcrete exposures: 1.5 inches.

14. The Tank Contractor shall make provisions to protect adjacent structures, equipment, vehicles, etc., from being damaged by overshooting shotcrete and rebound materials. Overshot shotcrete deposited onto the roof slab shall be removed before it adheres to the concrete surface.

15. After the minimum shotcrete cover specified over the wrapped prestressing strand has been completed by the automated shotcrete procedure, and if such finish requirements are shown on the Drawings, the exterior surface shall be given an acceptable float finish true to line and curvature and to details shown on the Drawings.

16. If a float finish is required on the Drawings, plaster or hand-applied shotcrete may be used to build up and level the surface and to obtain the desired surface finish and projections.

17. The finish coat mix (if a smooth float finish is required on the Drawings), shall consist of a minimum of one sack of cement for each 3-1/2 cubic feet of moist plaster sand.

18. The Tank Contractor shall be responsible for all damages caused by shotcreting operations and shall bear the cost for making repairs.

D. Hand Placed Shotcrete for Repairs Only:

1. To ensure a high quality shotcrete, the Tank Contractor shall satisfy the Engineer that the nozzleman has had sufficient and acceptable experience in the application of structural shotcrete and is a certified nozzleman in accordance with ACI 506.

2. Experience gained on shotcrete pool and ditch construction will not be considered as experience for qualifying the nozzleman.

3. The nozzleman shall be capable of applying thin coats of even and uniform thickness.

4. The nozzleman's skill shall be tested and the results of such tests shall be acceptable to the Engineer before that nozzleman may start any work.

E. Restrictions on Shotcrete Operation:

1. Shotcrete shall not be applied under such strong wind conditions that a considerable amount of cement and moisture will be removed by the wind from the mortar spray between the nozzle and the surface on which the shotcrete is applied.

2. Shotcrete may be applied in cold weather provided the surfaces are not frozen.

3. The temperature during the day must be expected to rise to at least 40 degrees Fahrenheit and the night temperature of the first night after the

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-33 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) shotcrete application must not be expected to drop below 27 degrees Fahrenheit.

4. The use of Type 3 Portland cement is required (when readily available) in the event shotcrete is applied at temperatures below 40 degrees Fahrenheit.

5. The Tank Contractor may apply shotcrete under the conditions specified herein solely at his own risk.

6. Whenever rain or frost has damaged shotcrete which has not had a chance to set up, such shotcrete must be removed and replaced.

7. The Tank Contractor shall consult with the Engineer to determine whether or not he will accept the shotcrete damaged by rain or frost before applying any new layers of shotcrete.

F. Shotcrete Curing:

1. Intermediate layers of shotcrete shall be kept damp by hand curing or other means no sooner than 12 hours after the shotcrete has been applied.

2. Watercuring is not required should additional shotcrete be applied on the entire wall surface within the following 12 hours.

3. Indiscriminate use of continuous watercure for intermediate layers should be avoided.

4. Complete shotcrete surfaces, which do not receive any additional shotcrete coatings, shall be membrane cured with plastic for a period of at least 7 days.

Plastic membrane used shall contain and prevent loss of moisture from shotcrete as much as possible. Membrane curing methods utilizing curing compounds or wax-based residuals will not be permitted.

5. Wall coatings, specified in Section 09986 - Painting Prestressed Concrete Water Tanks, shall be applied no later than 5 days after completion of the curing. If conditions make it impossible to apply coatings within the 5-day period, or if no coatings are required, shotcrete shall be membrane cured for a period of 10 days instead of the 7 days specified herein.

3.09 CLEANING
A. After construction is completed, the interior of the tank shall be completely cleaned of debris and flushed with clean water to remove all dirt and loose material.

3.10 DISINFECTING (NOT USED)

3.11 FILLING AND WATERTIGHTNESS TESTING
A. Filling:

1. The water used for the first filling of the tank will be furnished by the Owner. If the leakage test fails, the Tank Contractor shall refill the tank and retest it. The Tank Contractor shall be responsible for the cost of refilling the tank for subsequent tests.

2. The tank shall be filled in approximately 8-foot increments with 8 working hours between each increment for observation of possible leaks through ring drains, wall, and wall-footing.

B. Testing:

1. If only damp spots and small puddles of water are observed during filling, the filling of tank can continue. If leaks that are large enough to potentially fail the

Strand-Wound Circular Prestressed Concrete Tank with a Type I Core Wall and Domed Roof 13207-34 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13207 (CONFORMED) leakage test specified in Section 01759 - Water Leakage Test for Concrete Structures are observed, the filling process shall cease, and those leaks shall be thoroughly investigated prior to continuing to fill the tank.

2. Fill tank with water and hold water level at 3 inches below the overflow level for a period of 24 hours.

3. Test tank for leakage in accordance with the provisions of Section 01759 - Water Leakage Test for Concrete Structures.

4. Examine the tank and soil at the perimeter of the tank footings for evidence of leaks.
a. Acceptance criteria shall be as specified in Section 01759 - Water Leakage Test for Concrete Structures.

C. Repairing tank leaks:

1. Repair leaks to satisfaction of the Engineer.

2. Any areas that, in the opinion of the Engineer, are exposed to contamination during repair work shall be sprayed with disinfection water mix.

3. Leakage through joints, which may have resulted from bent over waterstops or honeycomb under or around waterstops, may require removal of concrete around waterstops in suspected areas.

4. Repair of chipped out concrete areas:
a. Coat chipped out concrete surface with epoxy bonding agent. b. Properly drypack with drypack mix for repair of concrete tank areas.

5. Any cracks, voids, honeycomb, or cold joints showing or causing running leaks of water, shall be repaired by epoxy injection as specified in Section 03931 - Epoxy Injection System until such cracks and voids have been completely sealed.

END OF SECTION
AD3 Addendum No. 3

Manual Actuators
13446-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13446 (CONFORMED) SECTION 13446

MANUAL ACTUATORS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes:

1. Valve and gate actuators.

2. Handwheel actuators.

3. Hand-cranked geared actuators.

4. Floor Boxes.

5. Floor stands.

6. Key operated valves.

7. Bench stands.

8. Accessory equipment and floor boxes.

1.02 REFERENCES
A. Aluminum Association (AA):

1. DAF-45 - Designation System for Aluminum Finishes.

B. American Water Works Association (AWWA).

C. National Electrical Manufacturers Association (NEMA):

1. 250 - Enclosures for Electrical Equipment (1000 V Maximum).

D. National Electrical Code (NEC).

1.03 SUBMITTALS
A. Shop drawings: Include shop drawings and product data with associated gate or valve as an integrated unit.

1.04 QUALITY ASSURANCE
A. Provide valve actuators integral with valve or gate, except for valve actuators utilizing T-wrenches or keys, and portable gate actuators intended to operate more than 1 valve.

B. Provide similar actuators by 1 manufacturer.

C. Provide gates and hand operating lifts by 1 manufacturer.

D. Provide hydraulic gate lifts by 1 manufacturer.

E. Provide hydraulic valve actuators and motorized actuators by 1 manufacturer.

Manual Actuators
13446-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13446 (CONFORMED)

1.05 MAINTENANCE
A. Extra materials:

1. Key operated valve keys or wrenches: Furnish a minimum 4 keys with 4-foot shafts and 3-foot pipe handles or wrenches with 4-foot shafts and 3-foot handles for operating key operated valves.

PART 2 PRODUCTS

2.01 VALVE AND GATE ACTUATORS
A. Valve actuators:

1. Manual actuators:
a. Material: Type 316 stainless steel.
b. Design: Hand lever.
c. Spring release handle: 12-inch.
d. Notch plate: 10 position.
e. Secure with mounting bolts.
f. Locking device so that valve can be locked in any position with a wing nut.

2. Stem and cover:
a. For submerged valves, provide extension stem as indicated on the Drawings.

B. Stem covers:

1. Aluminum pipe:
a. Threaded cap on top.
b. Bolted aluminum flange on bottom.
c. Slots cut 1- by 12-inch at 18 inches on center in front and back of pipe. d. Capable of covering threaded portion of greased stems that project above actuators when gates or valves are opened or closed.

2. Ultraviolet light resistant, clear butyrate plastic or polycarbonate pipe:
a. Capped on the upper end.
b. Either threaded into the top of the gate operators or held in place by bolt-down aluminum brackets.
c. Capable of covering threaded portion of greased stems that project above actuators when gates or valves are opened or closed.

3. Staff gauges:
a. Adhesive-backed mylar, suitable for outdoor service. b. Calibrated in hundredths of feet.
c. Read the weir crest elevations directly.
d. Gauge range: 1.5 feet minimum.
e. Indicate the following elevations on each staff gauge:
1) -0.75, -0.50, -0.25, 0.0, 0.25, 0.50, 0.75.
f. Supplement with a stem-mounted pointer or indicator that permits direct observation of the weir gate crest elevation.
g. Apply staff gauges to each stem cover after installation of the cover and after calibration and testing of the weir gates.
h. Set gauges precisely by a survey crew using instruments acceptable to the Engineer.

Manual Actuators
13446-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13446 (CONFORMED) C. Stem cover flanges, pipes, and caps:

1. After fabrication, etch and anodize to produce the following chemical finishes in accordance with AA publication DAF-45:
a. A 41 - Clear Anodic Coating.
b. C 22 - Medium Matte Finish.

D. Gate stem covers: Concentric with stem.

E. Position indicators:

1. For all aboveground worm gear or traveling nut manual actuators, provide position indication on the actuator enclosure.

2. Tail rods on hydraulic cylinders, or dial indicators with clear full-open and closed position indicators, calibrated in number of turns or percentage of opening.

F. Manual or power actuator size:

1. Sized to deliver maximum force required under most severe specified operating condition, including static and dynamic forces, seat and wedge friction, and seating and unseating forces with safety factor of 5, unless otherwise specified.

G. Actuator size: Capable of supporting weight of suspended shafting unless carried by bottom thrust bearings; shaft guides with wall mounting brackets.

H. Provisions for alternate operation: Where specified or indicated on the Drawings, position and equip crank or handwheel operated geared valve actuators or lifts for alternate operation with tripod mounted portable gate actuators.

I. Operation: Counterclockwise to open with suitable and adequate stops, capable of resisting at least twice normal operating force to prevent overrun of valve or gate in open or closed position.

J. Open direction indicator: Cast arrow and legend indicating direction to rotate actuator on handwheel, chain wheel rim, crank, or other prominent place.

K. Buried actuator housing: Oil and watertight, specifically designed for buried service, factory packed with suitable grease, completely enclosed space between actuator housing and valve body so that no moving parts are exposed to soil; provide actuators with 2-inch square AWWA operating nut.

L. Worm gear actuators: Provide gearing on worm gear actuators that is self-locking with gear ratio such that torque in excess of 160 foot-pounds will not need to be applied to operate valve at most adverse conditions for which valve is designed.

M. Traveling nut actuators: Capable of requiring maximum 100 foot-pounds of torque when operating valve under most adverse condition; limit stops on input shaft of manual actuators for fully open and closed positions; non-moving vertical axis of operating nut when opening or closing valve.

Manual Actuators
13446-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13446 (CONFORMED)

2.02 HANDWHEEL ACTUATORS
A. Manufacturers: One of the following or equal:

1. Rodney Hunt Co.

2. Waterman Industries, Inc.

B. Coating: Handwheel as specified in Section 09960 - High-Performance Coatings.

C. Mounting: Floor stand or bench stand. Unless otherwise indicated on the Drawings position actuator 36 inches (nominal) above top of walkway surface.

D. Bearings above and below finished threaded bronze operating nut: Ball or roller.

E. Wheel diameter: Minimum 24 inches.

F. Indicator: Counterclockwise opening with arrow, and word OPEN cast on top of handwheel indicating direction for opening.

G. Pull to operate: Maximum 40 pounds pull at most adverse design condition.

H. Stem travel limiting device: Setscrew locked stop nuts above and below lift nut.

I. Grease fittings: Suitable for lubrication of bearings.

2.03 HAND-CRANKED GEARED ACTUATORS
A. Type: Single removable crank; fully enclosed.

B. Mounting: Floor and bench stand. Unless otherwise indicated on the Drawings position actuator 36 inches (nominal) above top of walkway surface.

C. Operating nut: When scheduled for portable gate actuators.

D. Geared lifts: Single speed with minimum ratio of 2 to 1.

E. Teeth on gears, spur pinions, bevel gears, and bevel pinions: Cut.

F. Lift nuts: Cast manganese bronze.

G. Exterior surfaces on cast-iron lift parts: Smooth.

H. Bearings above and below flange on lift nuts: Ball or roller; capable of taking thrust developed by opening and closing of gates under maximum operating head; with bronze sleeve bearings and sufficient grease fittings for lubrication of moving parts, including bearings and gears.

I. Crank rotation indicator: Cast arrow with word OPEN in prominent location readily visible indicating correct rotation of crank to open gate.

J. Hand cranks: 15-inch radius; requiring maximum 25 pounds pull to operate gate at maximum operating head; with:

1. Revolving brass sleeves.

Manual Actuators
13446-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13446 (CONFORMED)

2. Gears, spur pinions, bevel gears, and bevel pinions with cut teeth.

3. Cast manganese bronze lift nuts.

4. Cast-iron lift parts with smooth exterior surfaces.

K. Indicator: Dial position type mounted on gear actuator; enclosed in cast-iron or aluminum housing with clear plastic cover; marked with fully open, 3/4, 1/2, 1/4, and closed positions.

2.04 FLOOR BOXES
A. Manufacturers: The following or equal:

1. Waterman Industries, Inc.

B. Floor boxes: Cast-iron; with:

1. Counter type indicator.

2. Hinged, lockable lid with directional arrow.

3. 2-inch square AWWA operating nut.

4. Packing gland providing drip-tight seal around valve shaft.

2.05 FLOOR STAND
A. Manufacturers: One of the following or equal:

1. Rodney Hunt Co.

2. Waterman Industries, Inc.

B. Floor stand assemblies: Heavy-duty cast-iron, suitable for mounting specified actuator.

2.06 BENCH STANDS
A. Manufacturers: One of the following or equal:

1. Rodney Hunt Co.

2. Waterman Industries, Inc.

B. Bench stands: Handwheel actuators or hand crank, geared actuators conforming to hand-cranked geared actuator requirements, except capacity to be mounted on haunch, wall bracket, or self-contained gate yoke.

2.07 ACCESSORY EQUIPMENT
A. Wall brackets or haunches: As indicated on the Drawings.

B. Stems: Stainless steel; sized to match output of actuator; minimum gate or valve operating stem diameter; maximum 200 slenderness ratio.

C. Stem couplings: Stainless steel; internally threaded to match stem; lockable to stem by set screw.

D. Stem guides: Cast-iron with silicon bronze bushing; maximum 200 slenderness ratio; capable of being mounted with wall bracket; adjustable in 2 directions.

Manual Actuators
13446-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13446 (CONFORMED) E. Wall brackets: Cast-iron, capable of withstanding output of actuator, adjustable in 2 directions.

F. Stem stuffing boxes: Cast-iron, with adjustable gland and packing.

G. Fasteners: Type 316 stainless steel.

H. Anchor bolts: As specified in Section 05190 - Mechanical Anchoring and Fastening to Concrete and Masonry except that the material shall be Type 316 stainless steel.

I. Geared valve actuators: Provided with cut gears, either spur or worm; sized to operate valves at most adverse design condition; with maximum 40-pound pull at handwheel or chain wheel rim.

J. Geared valve traveling nut actuators: Acceptable only where specified or indicated on the Drawings.

K. Accessory equipment for valves and gates requiring remote actuators: Operating stems, stem couplings, stem guides, wall brackets, and stem stuffing boxes.

PART 3 EXECUTION

3.01 INSTALLATION
A. Install floor boxes in concrete floor with lid flush with floor.

B. After installation of gate and stem covers, mark stem covers at point where top of stems are at full-open position and at closed position.

C. Attach floor stand to structure with anchor bolts.

D. Install stem stuffing boxes where operating stems pass through intermediate concrete floor slabs.

3.02 SCHEDULES
A. Geared actuators: Provide geared actuators for following valves:

1. Butterfly valves larger than 6 inches, nominal size, on liquid service.

2. Butterfly valves larger than 10 inches, nominal size, on gas and air service.

3. Plug valves 6 inches, nominal size, and larger.

B. Handwheel actuators: Provide handwheel actuators for valves mounted 6 feet or less above floors.

C. Chain wheel actuators: Provide chain wheel actuators for valves mounted more than 6 feet to centerline above floors.

END OF SECTION

Electric Actuators
13447-1 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED) SECTION 13447

ELECTRIC ACTUATORS
PART 1 GENERAL

1.01 SUMMARY
A. Section includes: Electric motor-driven actuators for valves and gates.

1.02 REFERENCES
A. American Water Works Association (AWWA):

1. C504 - Standard for Rubber-Seated Butterfly Valves.

2. C542 - Standard for Electric Motor Actuators for Valves and Slide Gates.

B. National Electrical Manufacturers Association (NEMA):

1. 250 - Enclosures for Electrical Equipment (1000 V Maximum).

1.03 SUBMITTALS
A. Submit as specified in Section 01330 - Submittal Procedures and Section 15050 - Common Work Results for Mechanical Equipment.

B. Provide a complete list/schedule of all actuators being provided with their associated tag names as indicated on the design drawings and/or specifications, service process area and the size of the valve they are actuating.

C. Product data:

1. Electrical ratings:
a. Voltage and number of phases.
b. Starting and running current.
c. Voltage levels and source for control and status.

2. Description of integral control interface.

3. Remote control station components (If applicable).

4. Environmental ratings, including NEMA enclosure rating and submergence capabilities.

5. Gear ratios for both manual and motorized actuation.

6. Opening and closing directions.

7. Allowable starts per hour.

8. List of all included options and accessories.

9. Full travel times.

10. Gearbox data including gear ratio, and gearbox efficiency.

D. Shop drawings:

1. Wiring diagrams:
a. Include all options and expansion cards furnished with each actuator.

2. Dimensioned drawings of each valve and actuator combination.

Electric Actuators
13447-2 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED)

3. Dimensioned drawings of each valve gearbox.

4. Electric motor data.

E. Calculations:

1. Operating torque.

2. Maximum torque calculations for seating and unseating.

3. Maximum operating torque at starting and normal operation.

4. Signed by Professional Engineer licensed in the State where project is located.

F. Provide draft vendor operation and maintenance manual as specified in Section 01782 - Operation and Maintenance Manuals:

1. Include a list of all configurable parameters, and the final values for each.

2. Include a troubleshooting chart covering the complete valve and controls/electrical power systems, showing description of trouble, probable cause, and suggested remedy.

G. Commissioning submittals:

1. Provide Manufacturer’s Certificate of Source Testing as specified in Section 01756 - Commissioning.
a. Affidavit in accordance with AWWA C542.

2. Provide Manufacturer’s Certificate of Installation and Functionality Compliance as specified in Section 01756 - Commissioning.

H. Project closeout documents:

1. Provide final vendor operation and maintenance manual as specified in Section 01782 - Operation and Maintenance Manuals.

1.04 WARRANTY
A. Provide warranty as specified in Section 01783 - Warranties and Bonds.

PART 2 PRODUCTS

2.01 MANUFACTURERS
A. Manufacturer for actuators on valves FV-60100 and FV-60102:

1. The following, no equal:
a. Bray, Series 70.

B. Manufacturers for actuators on other valves:

1. The following or equal:
a. Rotork Controls Inc. IQ3 Range:
1) IQ for multi-turn applications.
2) IQT for quarter-turn applications.
b. Limitorque Corp.:
1) Accutronix MX for multi-turn applications.
2) Accutronix QX quarter-turn applications.

Electric Actuators
13447-3 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED) C. Linear actuators:

1. The following or equal:
a. Rotork Controls Inc.:
1) CML Series.

2. As required to actuate the waste gates for the advanced water treatment (AWT) clarifier/filter units. Refer to Specification Section 11802 - Packaged Water Treatment System Rehabilitation.

2.02 CHARACTERISTICS FOR ACTUATORS ON LINES 4 INCHES AND LARGER A. Provide actuators complete and operable with all components and accessories required for operation.

B. Power supply:

1. Voltage and phases as indicated in the Motorized Actuator Schedule.

2. Valve or gate motion independent of power supply phase rotation.

3. Provide an internal backup power source or mechanical indicator to maintain settings and track valve position when main power is off.

4. The actuators shall incorporate all major components such as the motor, starter, local controls, terminals, etc. housed within a self-contained, sealed enclosure.

C. Size actuator to move gates or valves from full open to closed position within the time indicated in the Motorized Actuator Schedule:

1. If an operating time is not indicated on the Motorized Actuator Schedule, size the actuator to move gates or valves at minimum 12 inches per minute under maximum load. Measure rate of closure for valves at maximum diameter of disc, plug, or ball.

2. Size actuators so that gear boxes are not required where possible.

D. Control interface:

1. Configuration:
a. Provide a non-intrusive, non-contacting interface for configuring all input and output settings, control values, ranges, torque switch settings, valve positions switch settings, and options.
1) Configurable from a handheld configuring tool or input devices on the actuator.

2. Local interface, integral to actuator:
a. Non-intrusive, non-contacting selector switches:
1) LOCAL-STOP-REMOTE:
a) Motor actuator operation is prevented with the switch in STOP. 2) OPEN-CLOSE:
a) Controls the valve when LOCAL-STOP-REMOTE is in LOCAL. b) Spring return to center.
c) Configurable between maintained (actuator runs until end of travel, high torque, or a LOCAL-STOP-REMOTE is switched to STOP) and momentary (actuator stops when lever is released). b. Local display:
1) Valve fully open and fully closed indicators.
2) Numerical display showing actual valve or gate position in percent of travel.

Electric Actuators
13447-4 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED)

3. Remote control station - (VCP):
a. Provide remote control stations for all actuators located more than 5 feet above finished floor/grade or where indicated on the Drawings in the Schedule.
1) NEMA rating to match those to the associated Actuator Schedule. a) Where the rating is not listed, use NEMA Type 4X enclosures for non-hazardous areas, and explosion-proof (XP) Class I
Division 1 for hazardous areas.
b) All pilot devices shall 30 millimeters, and pilot lights shall be illuminated by LEDs.
2) LOCAL-STOP-REMOTE selector switch.
3) LOCAL mode control devices:
a) Operate valve when LOCAL-STOP-REMOTE integral to
actuator is in REMOTE and LOCAL-STOP-REMOTE on remote
control station is in LOCAL.
b) OPEN-STOP-CLOSE maintained switch or OPEN, STOP, and CLOSE pushbuttons where Maintained operation is indicated in the Actuator Schedule.
c) OPEN-CLOSE spring-return switch or OPEN and CLOSE
pushbuttons where momentary operation is indicated in the Attachment A - Intelligent Actuator Schedule.
4) Pilots’ lights to indicate valve position:
a) Fully open.
b) Fully closed.

4. Coatings:
a. Material requirements:
1) Factory prime and coat with an ISO 12944 classification coating of C5M (Marine, offshore estuaries with high salinity) coating with 15-year durability.
2) Touch-up damaged coatings with manufacturer provided coating repair kit.
b. Application requirements:
1) Painting shall commence within four hours of blast cleaning. 2) Each paint coat within the system is to be applied in accordance with the paint manufacturer’s instructions.
3) Paint thickness shall be checked for each coat on each actuator. c. Qualification requirements:
1) Operators shall be experienced and proficient in surface preparation and coating application techniques.
2) Personnel shall have relevant knowledge of health and safety hazard, use of protective equipment, coating materials, mixing and thinning coatings, coating pot life, surface requirements etc. 3) Personnel carrying out inspection or verification shall be certified as NACE coating inspector or equivalent such as ICorr.

5. Control inputs:
a. Capable of using discrete 120 VAC.
b. Controls the valve when LOCAL-STOP-REMOTE is in REMOTE. c. Isolated inputs capable of operating from external control voltage source or internal power supply:

Electric Actuators
13447-5 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED) d. Provide the following inputs:
1) OPEN.
2) CLOSE.
3) STOP.
e. OPEN and CLOSE inputs configurable between maintained (actuator runs until end of travel, high torque, or a STOP input) and momentary (actuator stops when command is removed).

6. Status outputs:
a. Monitor relay output: Dry contact, normally closed, opens when actuator is not in REMOTE or in the event of any internal fault or alarm condition. b. Dry contact outputs configured for the functions indicated on the Drawings. Provide the following outputs for all actuators:
1) Fully closed.
2) Fully open.
3) LOCAL-STOP-REMOTE in REMOTE position.
a. All output contacts rated for 5 amps, 120 VAC, and 24 VDC.

7. Analog input:
a. Provide a 4-20 milliampere analog input for analog modulating valves when indicated on the Drawings.
b. Modulate valve to maintain position based on analog input value. c. Maximum input impedance 250 ohms.

8. Analog output:
a. Provide an isolated 4-20 milliampere analog output(s) when indicated on the Drawings.
1) Loop power sourced from the actuator power supply.
2) Capable of driving into a load up to 500 ohms.
3) Output proportional to process value(s) indicated on the Drawings. 4) Valve or gate position.
5) Operating torque.

9. For actuators for non-vendor provided systems, provide native EtherNet/IP connectivity.

E. Features:

1. Time delay on reversal: Incorporate time delay between stopping actuator and starting in opposite direction to limit excessive current, torque, and heating from instantaneous reversal.

2. Data logging:
a. Store diagnostic data and reference data.
b. Time-stamped historical operating data, including number of operations and most recent operations.

3. Provide display of logged data on the actuator, or provisions to download to a personal computer.

F. Materials:

1. Construct motorized actuators of materials suitable for the environment in which actuator is to be installed.
a. Enclosure ratings:
1) As scheduled with the following requirements.
a) All actuators will be double sealed for corrosion protection rated at ip68.

Electric Actuators
13447-6 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED) 2) NEMA 4X for all actuators located outside of Class I areas. 3) All others shall be rated FM - Class I Groups B,C and D and Class II E, F, and G.

G. Components:

1. Motors:
a. Specifically designed for valve actuator service with high starting torque, totally enclosed non-ventilated construction.
b. Torque ratings equal to or greater than that required for valve seating and dynamic torques with a 25 percent factor of safety.
1) Design requirements for rubber-seated AWWA butterfly valves:
a) Design actuators for maximum gate or valve operating torque, in accordance with and using safety factors required in
AWWA C504 and AWWA C542.
(1) Valve actuator torque requirement for open-close service:

Not less than the required valve-seating and dynamic
torques under design operating conditions in accordance with AWWA C504.
(2) Valve actuator torque requirement for modulating service:

Not less than twice the required valve dynamic torque
under design operating conditions in accordance with
AWWA C504.
2) Design requirements for slide gates, gate valves, knife gate valves, globe valves, and diaphragm valves:
a) Design valves and actuators for maximum operating torque, in accordance with and using safety factors required in
AWWA C542.
b) Design for the maximum torque and thrust running load over the full cycle.
c) Maximum torque or thrust rating: The actuator stall torque or maximum thrust output shall not exceed the torque or thrust capability of the valve or gate, as determined by the valve or gate manufacturer.
c. Capable of being removed and replaced without draining the actuator gear case.
d. Motor bearings shall be amply proportioned of the anti-friction type and permanently lubricated.
e. Rated for operating under the following conditions without exceeding temperature limits with ambient temperature of 40 degrees Celsius. 1) Continuous operation for 15 minutes or twice the open-to-close operating time (whichever is greater) at normal operating torque or 33 percent of maximum torque (whichever is greater).
2) 60 starts per hour for open/close service or 1,200 starts per hour for modulating service.
f. Provide the following motor protection features:
1) Jammed valve (no valve motion detected through a time delay). 2) High motor temperature (sensed by an embedded thermostats). 3) High torque.
4) Single phasing protection.

Electric Actuators
13447-7 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED) H. Enclosures:

1. Actuator housing ratings as indicated in the Motorized Actuator Schedule.

2. Stainless steel external fasteners.

3. Provide O-ring seals for each of the following areas:
a. Between the terminal compartment and the internal electrical elements. b. Between the mechanical and electrical portions to protect from the ingress of oil, and to protect the mechanical components of oil from dust and moisture when the electrical terminal is open.

4. Provide actuators with the following minimum enclosure ratings as scheduled:
a. NEMA Type 4X enclosure for general applications.
b. NEMA Type 6P rated for actuators in underground vaults or where possible submergence is indicated in the Drawings.
1) Suitable for a minimum of 48 hours submerged under 3 meters of water.
c. NEMA Type 7 certified by FM for Class I, Division 1, Groups C, D, E, F, and G, for actuators installed in Class I, Division 1 and 2 areas.

I. Position sensing:

1. Electronic and adjustable using a solid-state encoder wheel. a. Mechanical limit switches and potentiometers are not acceptable.

2. Capable of retaining position and monitoring valve or gate motion when valve is manually actuated and when main power is not present.

3. Valve range and position switch outputs field adjustable.

J. Torque sensing:

1. Torque shutdown setting: 40 percent to 100 percent rated torque:
a. Adjustable in 1 percent increments.

2. Capable of interrupting control circuit during both opening and closing and when valve torque overload occurs.

3. Electrical or electronic torque sensing.

4. Independent of variations in frequency, voltage, or temperature.

5. The actuator shall store actual operational torque curves for retrieval by plant maintenance staff.

6. Provide a temporary inhibit of the torque sensing system during unseating or during starting in mid-travel against high inertia loads.

7. Provide visible verification of torque switch status without any housing disassembly.

K. Manual actuators:

1. Hand wheel for manual operation.
a. Maximum 80-pound pull on rim when operating gate or valve under maximum load.
b. Provide pull chain when motorized actuator is located more than 6 feet above floor surface.
1) Chain shall be of sufficient length to reach approximately 4 feet above the operating level.

Electric Actuators
13447-8 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED) 2) Where the chain obstructs an aisle or walkway, provide holdback or other means to ensure chain does not create a nuisance or hazard to operating personnel.
3) Provide Type 316 stainless steel.

2. Declutch lever: Padlockable, capable of mechanically disengaging motor and related gearing and freeing hand wheel for manual operation.

L. Gearing: Hardened alloy steel spur or helical gears and self-locking, alloy bronze worm gear set.

1. Accurately cut to ensure minimum backlash.

M. Bearings:

1. Anti-friction bearing with caged balls or rollers throughout.

2. Sealed-for-life type thrust bearings housed in a separate thrust base.

N. Drive bushing:

1. Easily detachable for machining to suit the valve stem or gearbox input shaft.

2. Positioned in a detachable base of the actuator.

O. Lubrication:

1. Provide totally enclosed actuator gearing with oil or grease filled gear case suitable for operation at any angle.

2. Actuators requiring special or exotic lubricants are not acceptable.

2.03 ACCESSORIES
A. Software:

1. Furnish PC-based diagnostic and configuration software to display diagnostic data.

2. Provide software communications to the valve actuator using Bluetooth wireless communications.
a. Provide all accessories and drivers required for operation and communications with a standard personal computer running Microsoft Windows.

B. Termination module cover:

1. For actuators on a valve network, provide a means to keep the valve network in service, in the event where the actuator must be removed.

2. Provide sunshades for all outdoor installations of remote control stations that use an LCD or similar screen. Regular pushbutton, sector switches, and pilot light control stations will not require a sunshade.

2.04 SPARE PARTS AND SPECIAL TOOLS
A. As specified in Section 01600 - Product Requirements.

B. Spare parts:

1. Provide the following (minimum 10 percent of total number of actuators of each model type furnished, but not less than 1 for each model of actuator furnished):
a. Stem nut.

Electric Actuators
13447-9 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED) b. Worm shaft subassembly.
c. Drive sleeve subassembly.
d. Complete actuator seal kit.
e. Actuator gearbox oil (sufficient quantity to fill 4 gearboxes). f. Encoder.
g. Control module.

2. Provide 1 spare motor for each size motor furnished.

PART 3 EXECUTION

3.01 GENERAL
A. As specified in Section 15050 - Common Work Results for Mechanical Equipment.

B. Position visual indicators so that they are most easily visible.

3.02 COMMISSIONING
A. As specified in Section 01756 - Commissioning, Section 15958 - Mechanical Equipment Testing, and this Section.

B. Manufacturer services:

1. Provide certificates:
a. Manufacturer’s Certificate of Source Testing:
1) Proof-of-Design and Performance Test Reports in accordance with AWWA C542.
b. Manufacturer’s Certificate of Installation and Functionality Compliance.

2. Manufacturer’s Representative on-site requirements:
a. Installation: 2 trips, 2-day minimum each.
b. Functional testing: 2 trips, 2-day minimum each.

3. Training:
a. Maintenance: 4 hours per session, 2 sessions.
b. Operation: 2 hours per session, 2 sessions.

C. Source testing:

1. Design and Performance Test Reports in accordance with AWWA C542.

2. Test each actuator with a simulated load.
a. Simulate a typical valve load.

3. Electrical Instrumentation and Controls:
a. Test witnessing: not witnessed.
b. Conduct testing as specified in Section 17950 - Commissioning for Instrumentation and Controls.

D. Functional testing:

1. Installed actuator:
a. Test witnessing: Witnessed.
b. Conduct Level 2 General Equipment Performance Tests. c. Conduct Level 2 Vibration Tests.
d. Conduct Level 2 Noise Tests.

Electric Actuators
13447-10 8660F10 July 12, 2023 - CONFORMED
pw://Carollo/Documents/Client/CA/Ukiah/8660F10/Specifications/New Scope/13447 (CONFORMED)

2. Electrical Instrumentation and Controls:
a. Test witnessing: Witnessed.
b. Conduct testing as specified in Section 17950 - Commissioning for Instrumentation and Controls.

3.03 INTELLIGENT ACTUATOR SCHEDULE
A. Provide actuators indicated on the Drawings:

1. Major process actuators are listed in the Intelligent Actuator Schedule shown in Attachment A - Intelligent Actuator Schedule
a. Attachment A - Intelligent Actuator Schedule does not include all number and types of actuators required for the Project.

END OF SECTION