Bid Notice-Biofilter Fan Replacement (WBP 212).pdf

Title Page and Index July 2026

City of Boise

West Boise Water Renewal Facility

Biofilter Fan Replacement

Project No.: WBP 9000

Index of Construction Documents

SECTION TITLE PAGE

Specifications 011000 General Requirements 1 - 3

024119 Selective Demolition 1 - 2

233400 HVAC: Fans 1 - 5

Clay Ellestad Digitally signed by Clay Ellestad DN: C=US, E=cellestad@cityofboise.org, O=City of Boise, OU=Public Works, CN=Clay Ellestad Reason: I am approving this document Date: 2026.07.13 15:56:49-06'00'

Biofilter Fan Replacement July 2026

GENERAL REQUIERMENTS 011000 - 1

SECTION 011000 � GENERAL REQUIERMENTS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Project information.

2. Work covered by Contract Documents.

3. Submittal Procedures

4. Construction Schedule

5. Schedule of Values

6. Work Sequence

7. Access to site.

8. Traffic Control.

9. Erosion and Sediment Control

10. Coordination with occupants.

11. Work restrictions.

12. Safety

13. Startup and Commissioning

14. Miscellaneous provisions

1.3 PROJECT INFORMATION

A. Project Identification: West Boise Water Renewal Facility, Biofilter Fan Replacement

1. Project Location: 11818 West Joplin Rd., Boise Idaho 83714

B. Owner: City of Boise

1. Owner�s Project Manager: Nicole Bolton, 702-374-4070, nbolton@cityofboise.org

2. Owner�s Representative: Clay Ellestad, 208-608-7168, cellestad@cityofboise.org

1.4 WORK COVERED BY CONTRACT DOCUMENTS

A. The Work of Project is defined by the Contract Documents and consists of the following:

1. Work involves the installation of fan and motor and low-pressure foul air piping system to supply plant foul air from the header to associated biofilter cells. The project consists of excavations, demolition of concrete, placement and support and connection of new

GENERAL REQUIERMENTS 011000 - 2

foul air piping, installation of fan and electrical connections and other minor related work.

1.5 SUBMITTAL PROCEDURES

A. Contractor shall provide all required submittals shall be provided to the Owners Project Manger for review for conformance of these specifications.

B. Submittals include documents and materials required by the Contract to be submitted to the Owner for information and/or review. They include shop drawings, product data, material samples, information, documentation, working drawings and outage requests.

1. Submittals will be returned with one of the following labels and necessary comments.

a. �NO EXCEPTIONS TAKEN�, contractor may begin work encompassed by the submittal.

b. �MAKE CONNECTIONS NOTED�, upon correction, contractor may immediately begin the work indicated by the submittal.

c. �REVISE AND RESUBMIT�, contractor is required to revise the submittal and resubmit it. No work shall be performed until the contractor has made the necessary revisions and resubmitted the submittal.

d. �REJECTED�, contractor may not begin work related with the submittal, nor incorporate material or equipment, nor proceed with work until the contractor has made the necessary revisions and resubmitted the submittal.

1.6 CONSTRUCTION SCHEDULE

A. Prior to preconstruction conference, the Contractor shall provide the Engineer a construction schedule details dates of project milestones.

B. Contractor shall update and submit a revised schedule when construction dates are changed and when Contractor submits invoices involving this project.

1.7 SCHEDULE OF VALUES

A. Prepare and submit a detailed Schedule of Values to the Owner within thirty (30) Calendar Days from the date of Notice to Proceed.

B. Submit the minimum detail of breakdown of the major Work components as follows; furnish greater detail if requested by the Owner.

1. Mobilization

2. Electrical work by structure or facility.

3. Yard piping work by structure or facility.

4. Mechanical work by structure or facility.

5. Civil work by structure or facility.

GENERAL REQUIERMENTS 011000 - 3

1.8 WORK SEQUENCE

A. General: Cooperate fully with Owner so work may be carried out smoothly, without interfering with or delaying work under this Contract or work by Owner. Coordinate the Work of this Contract with work performed by Owner.

B. Contingent upon the final awarded contract amount, contractor will be permitted to work on one biofilter system at a time. A minimum of three operating biofilters are necessary to provide foul air treatment to the plant.

1. Owners Representative will disable selected biofilter from plant controls to allow contractor to begin work on selected unit.

1.9 ACCESS TO SITE

A. Contractor shall limit use of project site to within approximately 100-feet of work areas surrounding gate. Do not disturb portions of Project site beyond areas in which the Work is being performed.

B. The property within the treatment facility may be utilized for stockpiling of equipment, storage at locations approved by the Engineer. Contact Boise City Project Manager prior to beginning construction to finalize stockpiling, staging, and parking locations. Those areas used for stockpiling and staging will be restored to a preconstruction condition prior to substantial completion of project.

1.10 TRAFFIC CONTROL

A. Contractor shall coordinate project construction activities with the Owner to ensure that the operation of the facility is not impeded.

1.11 EROSION AND SEDIMENT CONTROL

A. It is anticipated that construction of this Project will result in total land disturbance of less than an -acre, therefore, an EPA General Construction Permit, a Storm Water Pollution Prevention Plan

(SWPPP), and Notice of Intent (NOI) will not be prepared. However all local sediment control requirements must be met.

1.12 COORDINATION WITH OCCUPANTS

A. Full Owner Occupancy: Owner will occupy site and adjacent building(s) during entire construction period. Cooperate with Owner during construction operations to minimize conflicts and facilitate

Owner usage. Perform the Work so as not to interfere with Owner's day-to-day operations. Maintain existing exits unless otherwise indicated.

1.13 WORK RESTRICTIONS

A. On-Site Work Hours: Limit work to normal business hours of 8:00 a.m. to 5:00 p.m., Monday through Friday, holidays not included.

GENERAL REQUIERMENTS 011000 - 4

B. Site Security and Background Checks: The Contractor shall follow the requirements of attached

Contractor Access and Security Background Check document. Contractor should be aware that background checks will be required for all employees, subcontractors, vendors, delivery personnel, or other required to have full access to the site. Note that background checks require some time, and that the background checks must be completed prior to beginning construction.

1.14 SAFETY

A. The odor control and ventilation system serves classified locations throughout the plant. The NEC hazardous locations classifications are Class 1 Division 2 for areas within 3ft of leakage sources, areas beyond 3ft are unclassified.

1. See NFPA 820, Table 4.2.2, Row 18, Line e and f.

B. Contractor is fully responsible for establishing, initiating, maintaining and supervising all health and safety and protection of project staff, subcontractors and visitors on the construction site.

C. Contractor shall follow all OSHA requirements and other applicable safety standards required during construction.

D. Contractor shall secure all equipment and work to prevent safety hazards at the conclusion of the workday.

1.15 STARTUP & COMMISSIONING

A. Contractor to verify to the Owner that systems, equipment, mechanical, electrical, and controls function together properly to meet performance requirements and design intent as shown in the

Contract Documents.

1.16 MISCELLANEOUS PROVISIONS

A. Truck/ Trailer Load Coverage: All loads of gravel, sand, dirt, landscape bark, and other loose material hauled on the public roadway within Ada County by the Contractor or any of its subcontractors, shall be covered and properly secured so as to prevent the load from dropping, shifting, leaking, or otherwise escaping from the vehicle or becoming loose, detached, or in any manner a hazard to other uses of the public roadway.

B. Property Damage: Any property damage, which may occur as a result of the construction activity, and is brought to the attention of the Contractor, either by the property owner or the Boise City

Project Manager, shall be repaired within a time limit established by the Manager.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 011000

SELECTIVE DEMOLITION 024119 - 1

SECTION 024119 - SELECTIVE DEMOLITION

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Demolition and removal of selected site elements.

B. Related Requirements:

1. Section 011000 "Summary" for restrictions on the use of the premises, Owner-occupancy requirements, and phasing requirements.

1.3 DEFINITIONS

A. Remove: Detach items from existing construction and legally dispose of them off-site unless indicated to be removed and salvaged or removed and reinstalled.

B. Remove and Salvage: Carefully detach from existing construction, in a manner to prevent damage, and deliver to Owner ready for reuse.

C. Remove and Reinstall: Detach items from existing construction, prepare for reuse, and reinstall where indicated.

D. Existing to Remain: Existing items of construction that are not to be permanently removed and that are not otherwise indicated to be removed, removed and salvaged, or removed and reinstalled.

1.4 MATERIALS OWNERSHIP

A. Unless otherwise indicated, demolition waste becomes property of Contractor.

1.5 PRECONSTRUCTION MEETINGS

A. Preconstruction: Contractor to coordinate preconstruction meeting with City representative minimum five calendar days before meeting. Conduct conference at Project site.

1. Inspect and discuss condition of items to be selectively demolished.

2. Review and finalize project schedule and verify availability of materials, personnel, equipment, and facilities needed to make progress and avoid delays.

SELECTIVE DEMOLITION 024119 - 2

3. Review areas where existing construction is to remain and requires protection.

1.6 FIELD CONDITIONS

A. Owner will occupy portions of site immediately adjacent to selective demolition area. Conduct selective demolition so Owner's operations will not be disrupted.

B. Hazardous Materials: It is not expected that hazardous materials will be encountered in the

Work.

C. Utility Service: Maintain all existing buried utilities and protect them against damage during construction.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1 SELECTIVE DEMOLITION, GENERAL

A. General: Demolish and remove existing construction only to the extent required by new construction and as indicated. Use methods required to complete the Work within limitations of governing regulations.

3.2 DISPOSAL OF DEMOLISHED MATERIALS

A. Disposal: Transport demolished materials off Owner's property and legally dispose of them.

B. All loads of gravel, sand, dirt, landscape bark, and other loose material hauled on the public roadway within Ada County by the Contractor or any of its subcontractors, shall be covered and properly secured to prevent the load from dropping, shifting, leaking, or otherwise escaping from the vehicle or becoming loose, detached, or in any manner a hazard to other uses of the public roadway.

3.3 CLEANING

A. Clean adjacent structures and improvements of dust, dirt, and debris caused by selective demolition operations. Return adjacent areas to condition existing before selective demolition operations began.

END OF SECTION 024119

HVAC Fans 233400 - 1

SECTION 23 34 00

HVAC: FANS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Heating, ventilating, and cooling equipment.

B. Related Specification Sections include but are not necessarily limited to:

1. Division 00 - Procurement and Contracting Requirements.

2. Division 01 - General Requirements.

3. Section 23 31 00 - HVAC: Ductwork.

1.2 QUALITY ASSURANCE

A. Referenced Standards:

1. Air Movement and Control Association (AMCA).

a. AMCA Publication 203 Field Performance Measurements

b. ANSI/AMCA 210 Laboratory Methods of Testing Fans for Aerodynamic Performance

Rating.

2. Air Conditioning and Refrigeration Institute (ARI).

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

a. HVAC Applications Handbook, Chapter entitled "Sound and Vibration Control."

b. 20, Methods of Testing for Rating Remote Mechanical-Draft Air-Cooled Refrigerant

Condensers.

c. 52.2, Method of Testing General Ventilation Air-Cleaning Devices for Removal

Efficiency by Particle Size.

4. National Electrical Manufacturers Association (NEMA):

a. 250, Enclosures for Electrical Equipment (1000 Volts Maximum).

5. National Fire Protection Association (NFPA):

a. 70, National Electrical Code (NEC).

6. Underwriters Laboratories, Inc. (UL):

a. 507, Standard for Electric Fans.

7. Building code:

a. International Code Council (ICC):

1) International Building Code and associated standards, 2018 Edition including all amendments, referred to herein as Building Code.

B. Miscellaneous:

1. Gage thickness specified herein shall be manufacturer's standard gage for steel and Brown and Sharpe gage for non-ferrous metals.

2. Corrosion protection of equipment to be as specified herein.

1.3 SUBMITTALS

A. Shop Drawings:

1. Manufacturer�s standard schematic Drawings and diagrams as follows:

a. Drawn accurately to scale.

b. Modify to delete information that is not applicable to the Work.

c. Supplemental information to provide information that is specifically applicable to the Work.

2. Product technical data including:

a. Manufacturer's installation instructions.

b. Wiring diagrams.

c. Control diagrams.

HVAC Fans 233400 - 2

d. Manufacturer's catalog cuts and technical data.

e. Corrosion-protection information.

f. Fan curves.

g. Sound data.

h. Vibration isolation.

i. Performance data on all equipment.

3. Certifications:

a. Provide certification of thickness of corrosion-protection coating.

b. Fan systems have been tested in accordance with AMCA Standard 210 or 260, and are licensed to bear the AMCA Certified Ratings Seal.

B. Factory Performance test for any fan having a flow rate greater than 1,000 cfm and/or a total static pressure rating equal to or greater than 1.5 inches WC.

1. Pursuant to AMCA Publication 203 or 210 with no plus tolerances on Power and no minus tolerances on flow or pressure.

C. Contract Closeout Information:

1. Operation and Maintenance Data:

a. See Specification Section 01 33 04 for requirements for the mechanics, administration, and the content of Operation and Maintenance Manual submittals.

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. Subject to compliance with the Contract Documents, the following manufacturers are acceptable:

1. Vibration isolation assemblies:

a. Mason.

b. Vibration Mounting and Controls Co.

c. Vibro-Acoustics.

2. Corrosion-protective coatings:

a. Heresite and Chemical Co.; "Heresite."

b. Aero-Marine Engineering, Inc.

3. Fiberglass (FRP) Centrifugal Fans:

a. Hartzell.

2.2 GENERAL

A. All Manufactured Units:

1. Factory wired and assembled.

2. Use fasteners made of same material as unit.

3. Fabricate motor assemblies and unit housings with vibration isolation assemblies:

a. Type: As per Table 47, Chapter 48, ASHRAE HVAC Applications Handbook.

b. Vibration isolators are required at all fan locations.

B. Indicated manufactured units shall be constructed with corrosion-resistant materials or have corrosion-resistant coating.

1. Type:

a. Corrosion-resistant materials:

1) Stainless steel.

2) FRP.

b. Corrosion-resistant coating:

1) Epoxy-based coating.

2) 3 mil minimum dry thickness, air-dried coating, for surfaces exposed to temperatures less than 150 DegF.

3) 5 mil baked-on coating for heat transfer surfaces and surfaces exposed to

HVAC Fans 233400 - 3 temperatures greater than 150 DegF.

4) Factory applied.

5) Provide factory certification of application.

2.3 MANUFACTURED UNITS

A. Fiberglass Round Volume Dampers:

1. Frame and flanges: Vinyl ester resin.

2. Blade: Vinyl ester resin.

3. Surface veil: 30 mil resin rich.

4. Axle: Pultruded FRP, vinyl ester resin, minimum 1 IN DIA.

5. Blade seal:

a. Neoprene.

b. Full circumferential.

c. Maximum leakage of 3.0 cfrn/sfat 10 in w.g.

6. Shaft seal: Neoprene O-ring.

7. Bearings: Molded PTFE.

8. Crank lever and hand quadrant: 316 SS, locking.

9. Flanges integral to web.

10. Damper to match ductwork size.

11. Swartwout Model 912, or equal.

B. Fiberglass Reinforced Plastic Centrifugal Fans:

1. General: Provide fiberglass reinforced plastic (FRP) centrifugal fans of sizes, arrangements, accessories and capacities as indicated or as specified herein.

a. AMCA A or B rated.

2. Fan units:

a. Provide factory-assembled and tested fan units consisting of a housing, a wheel, a fan shaft, bearings and a side support structure.

3. Housings:

a. Provide curved scroll housings constructed of solid FRP.

b. Inlet and drive side stands constructed of steel with interior surface shielded with FRP.

c. Exterior metal surfaces to be cleaned and coated with high solids vinyl coating 4 to 5 mils thickness.

d. Inlet and drive side plates to be fastened to housing with imbedded, FRP encapsulated

Type 316 stainless steel bolts.

e. The outlet flange and inlet collar are constructed of solid FRP.

4. Wheels:

a. Provide backwardly-inclined, plate-type blades constructed of solid FRP.

b. Key wheels to shafts.

c. Statically and dynamically balance wheels after assembly.

d. Abrasion resistant ceramic coating, 50-60 mils.

5. Shafts:

a. Construct shafts of AISI 1040 or 1045.

b. Solid hot-rolled steel, turned, polished and encapsulated in FRP through the shaft seal.

c. Provide FRP stuffing box and gasketed housing shaft seal.

6. Bearings:

a. Heavy-duty.

b. Grease lubricated.

1) Extended lubrication lines from outside of fan enclosure to fan bearings and motor bearings

c. Precision.

d. Anti-friction ball or roller.

e. Self-aligning.

f. Pillow block-type bearings.

HVAC Fans 233400 - 4

g. Minimum average L-50 life of 200,000 HRS.

7. Drive:

a. Provide a V-belt drive with belt guard.

b. Selected for a 1.4 service factor.

c. Provide an adjustable pitch sheave, selected for midpoint at design conditions.

d. Provide removable full-size Lexan (clear) plastic plates in belt guard housing for visual inspection of fan belt and motor rotation.

e. Provide 1 IN wide orange paint marking on belts for visual confirmation of fan belt rotation.

f. Provide motors capable of operating in Class I Division II area and meets UL Listing requirements.

8. Vibration control:

a. Provide vibration control, in accordance with paragraph 2.2.A.4.

9. Accessories: Provide the following accessories.

a. Access doors: Neoprene gasketed FRP and bolted access door in the scroll housing.

b. Drain connections:

1) Provide 2 IN threaded coupling drain connections the lowest point of the housing.

2) Fiberglass with PVC Plug

c. Neoprene Shaft Seal, Water Slinger

d. Hardware to Fan, airstream only

1) 304 Stainless Steel

e. Water Cover

1) Steel - Epoxy Coating

f. Drilled Inlet Flange

1) Fiberglass

g. Drilled Outlet Flange

1) Fiberglass

h. Floor Spring Vibration Isolators

1. FRP Square Fan Outlet to 24 IN Round FRP Duct J. 24" Flex Connection

1) Materials:

a) Flex Component: Viton

b) Flange: 316 Stainless Steel

10. Size and capacity as scheduled in specifications.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install in accordance with manufacturer recommendations.

B. Install fixed pitched drive sheave after sheave has been sized based on accepted test and balance report.

3.2 ADJUSTING

A. Install new filters on units which have been running prior to acceptance of Project.

3.3 SCHEDULE

A. Fiberglass Reinforced Plastic Centrifugal Fans.

HVAC Fans 233400 - 5

EQUIPMENT

TOTAL

STATIC

PRESSURE FAN MOTOR V, HARTZELL

NO. CFM INW.C. DIA HP PHASE MODEL

WBIOBLW

84041 6,650 7.0 24 9.75 460,3

A41P0-242FA-

66FGFCM3

END OF SECTION