ADDENDUM_2_-_2025.10_ITB_Sundial_WWTP_Expansion_-_Questions_Clarifications.pdf

M. Hagler, P.E.

BDI/PNS

10/2/2025

K:\255 Milton\25560.01 Sundial WWTP Expansion\Bidding\Addenda\Addendum 2\25560.01 Addendum 2.docx

25560.1 ADDENDUM NO. 2 1

ADDENDUM NO. 2

CITY OF MILTON

SUNDIAL WWTP EXPANSION PROJECT

October 2, 2025 Bid Number: CC2025-10

BDI Project No. 25560.01

The following changes have been made to the plans & specifications for the above project:

A. CONTRACT DOCUMENTS/SPECIFICATIONS

ITEM DOCUMENT CHANGE

1. Specification 099636 Sections (3.4 L. 1, 3.4 N., 3.7 A. 2.c) Replace the word Wakulla with City of Milton.

2. Specification 432332 Specification 432332 section 1.8(A) was updated to show the correct design conditions for the proposed pumps. The proposed pumps will need to have the capability to pump

150gpm @ 119’ of head.

3. Specification 434145-01 Specification 434145-01 has been added to replace/ remove Specification 434146 in its entirety.

4. Specification 463344-01 Specification 463344-01 was added to the TOC which removed and replaced Specification 463344 in its entirety.

5. Specification 463344-02 Specification 463344-02 has been added to the TOC.

6. 4 - Bid Form Additive Alternate added

7. TABLE OF CONTENTS Updated TOC included.

B. CONSTRUCTION PLANS

SHEET

NO. CHANGE

G-004 Elevations updated

C-103 Sequence of construction key notes added.

C-121 Drain piping updated

M-201 Basis of Design key notes added.

M-202 Drain piping updated

M-610 A callout was added to show minimum capacity for the proposed sodium chlorite storage tank. A construction note was added to the concrete pad for the sodium chlorite storage tank.

M-611 A callout was added to show minimum capacity for the proposed sodium chlorite storage tank.

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25560.1 ADDENDUM NO. 2 2

C. QUESTIONS AND CLARIFICATIONS

Questions:

Q: Is the intent to repair cracks and/or spalls and install coatings to the exterior of the existing headworks?

A: No coatings are proposed to the exterior of the existing headworks.

Q: Is the intent to install a liquid applied liner inside of the existing headworks once modifications are made?

A: No liquid applied liner are proposed to the interior of the existing headworks.

Q: Is the intent to install a liquid applied liner to the interior concrete surfaces of the now or existing chlorine contact chamber?

A: Yes, interior walls of the existing headworks shall be coated. An additive alternate has been added to the bid form for coating of the Chlorine Contact Chamber.

Q: Is the intent to repair cracks or spalls and install exterior coatings to the existing or new chloring contact chamber?

A: No coatings are proposed to the exterior of the existing chlorine contact chamber.

Q: Is the intent to install a liquid applied liner to interior concrete surfaces of Supplemental Aeration Basins A/B?

A: No liquid applied liner is proposed for the interior concrete surfaces of Supplemental Aeration Basins A/B.

Q: Is the intent to install a liquid applied liner to interior concrete surfaces of proposed AeroMod Train C/D?

A: No liquid applied liner is proposed for the interior concrete surfaces of proposed AeroMod Train C/D.

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25560.1 ADDENDUM NO. 2 3

Q: Is the intent to clean, inspect, make repairs in, and install a liquid applied liner to interior concrete surfaces of existing Areomod Train A/B?

A: No liquid applied liner is proposed for the interior concrete surfaces of existing Areomod Train A/B.

Q: Is the intent to repair cracks or spalls and install exterior concrete coatings to the existing Aeromod A/B or proposed Aeromod C/D?

A: Reference Specification 099726.

Q: Is the intent to include and architectural or high performance coatings to the interior or exterior of the proposed chemical building?

A: No

Q: Please confirm that BABA is required as we are seeing some project with this noted have BABA waived.

A: Yes

Q: Since this project is an upgrade to an existing WWTP, Is there a sequence of work available from the owner or engineer so the existing plant is disrupted as little as possible.

A: Sequence of construction has been added to the DWGs. See sheet C-103.

Q: What is the storage capacity of the sodium hypochlorite bulk storage tank in gallons?

A: The minimum storage capacity of the sodium hypochlorite bulk storage tank shall be 1,700 gallons.

Q: Will Watson Marlow Qdos pump be accepted as an equal since they are currently in use at the main WWTP?

A: Specification 463344.02 has been added to this addendum. If the proposed pump follows all requirements for the specification mentioned above, it will be considered an approved equal.

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25560.1 ADDENDUM NO. 2 4

Q: Will ASSMANN Corporation of America be accepted as an equal for the sodium hypochlorite bulk storage tank?

A: Specification 434145.01 has been added to this addendum. If the proposed tank follows all requirements for the specification mentioned above, it will be considered an approved equal.

DEADLINE FOR QUESTIONS

The deadline for questions is Thursday, September 25th, 2024.

The CONTRACTOR shall acknowledge the receipt of this ADDENDUM by signing below, including a copy with the BID, and acknowledge where indicated on page 2 of the Contractor’s Proposal Form.

CONTRACTOR

BY

DATE

THIS PAGE LEFT BLANK INTENTIONALLY

Bid Form

Project Identification: SUNDIAL WASTEWATER TREAMENT PLANT EXPANSION

Contract Identification and Number: CONTRACT 1 – SUNDIAL WWTP EXPANSION

TABLE OF ARTICLES

Page

Article 1 - Bid Recipient 1

Article 2 - Bidder’s Acknowledgments 1

Article 3 - Bidder’s Representations 1

Article 4 – Bidder’s Certification 3

Article 5 - Basis of Bid 4

Article 6 - Time of Completion 5

Article 7 - Attachments to Bid 5

Article 8 - Defined Terms 6

Article 9 - Bid Submittal 6

ARTICLE 1 - BID RECIPIENT

1.01 This Bid Is Submitted To: CITY OF MILTON

6738 DIXON STREET

P.O. BOX 909

MILTON, FL 32572

1.02 The undersigned Bidder proposes and agrees, if this Bid is accepted, to enter into an

Agreement with Owner in the form included in the Bidding Documents to perform all

Work as specified or indicated in the Bidding Documents for the prices and within the times indicated in the Bid and in accordance with the other terms and conditions of the

Bidding Documents.

ARTICLE 2 - BIDDER’S ACKNOWLEDGMENTS

2.01 Bidder accepts all of the terms and conditions of the Advertisement and Instructions to

Bidders, including without limitations those dealing with the dispositions of Bid security. The Bid will remain subject to acceptance for 90 days after the Bid opening, or for such longer period of time that Bidder may agree to in writing upon request of

Owner.

ARTICLE 3 - BIDDER’S REPRESENTATIONS

3.01 In submitting this Bid, Bidder represents that:

A. Bidder has examined and carefully studied the Bidding Documents, the other related data identified in the Bidding Documents, and the following Addenda, receipt of which is hereby acknowledged:

Addendum No. Addendum Date

B. Bidder has visited the Site and become familiar with and is satisfied as to the general, local, and Site conditions that may affect cost, progress, and performance of the Work.

C. Bidder is familiar with and is satisfied as to all Federal, state, and local Laws and

Regulations that may affect cost, progress, and performance of the Work.

D. Bidder has carefully studied all: (1) reports of explorations and tests of subsurface conditions at or adjacent to the Site and all drawings of physical conditions relating to existing surface or subsurface structures at the Site that have been identified in the

Supplementary Conditions, especially with respect to Technical Data in such reports and drawings, and (2) reports and drawings relating to Hazardous Environmental

Conditions, if any, at or adjacent to the Site that have been identified in the

Supplementary Conditions, especially with respect to Technical Data in such reports and drawings.

E. Bidder has considered the information known to Bidder; information commonly known to contractors doing business in the locality of the Site; information and observations obtained from visits to the Site; the Bidding Documents; and the Site-related reports and drawings identified in the Bidding Documents, with respect to the effect of such information, observations, and documents on (1) the cost, progress, and performance of the Work; (2) the means, methods, techniques, sequences, and procedures of construction to be employed by Bidder, including applying the specific means, methods, techniques, sequences, and procedures of construction expressly required by the Bidding Documents; and (3) Bidder’s safety precautions and programs.

F. Based on the information and observations referred to in the preceding paragraph, Bidder does not consider that any further examinations, investigations, explorations, tests, studies, or data are necessary for the determination of this Bid for performance of the Work at the price(s) bid and within the times and in accordance with the other terms and conditions of the Bidding Documents.

G. Bidder is aware of the general nature of the Work to be performed by Owner and others at the Site that relates to the Work as indicated in the Bidding Documents.

H. Bidder has given Engineer written notice of all conflicts, errors, ambiguities, or discrepancies that Bidder has discovered in the Bidding Documents, and the written resolution thereof by Engineer is acceptable to Bidder.

I. The Bidding Documents are generally sufficient to indicate and convey understanding of all terms and conditions for the performance of the Work for which this Bid is submitted.

J. The submission of this Bid constitutes an incontrovertible representation by Bidder that Bidder has complied with every requirement of this Article, and that without exception the Bid and all prices in the Bid are premised upon performing and furnishing the Work required by the Bidding Documents.

ARTICLE 4 - BIDDER’S CERTIFICATION

4.01 Bidder further represents that:

A. This Bid is genuine and not made in the interest of or on the behalf of any undisclosed individual or entity and is not submitted in conformity with any agreement or rules of any group, association, organization, or corporation;

B. Bidder has not directly or indirectly induced or solicited any other Bidder to submit a false or sham Bid;

C. Bidder has not solicited or induced any individual or entity to refrain from bidding;

and

D. Bidder has not engaged in corrupt, fraudulent, collusive, or coercive practices in competing for the Contract. For the purposes of this Paragraph 4.01.D:

1. “corrupt practice” means the offering, giving, receiving, or soliciting of any thing of value likely to influence the action of a public official in the bidding process;

2. “fraudulent practice” means an intentional misrepresentation of facts made (a) to influence the bidding process to the detriment of Owner, (b) to establish bid prices at artificial non-competitive levels, or (c) to deprive Owner of the benefits of free and open competition;

3. “collusive practice” means a scheme or arrangement between two or more

Bidders, with or without the knowledge of Owner, a purpose of which is to establish bid prices at artificial, non-competitive levels; and

4. “coercive practice” means harming or threatening to harm, directly or indirectly, persons or their property to influence their participation in the bidding process or affect the execution of the Contract.

ARTICLE 5 - BASIS OF BID

5.01 Bidder will complete the Work in accordance with the Contract Documents for the following price(s):

ITEM DESCRIPTION QTY UNIT AMOUNT

1 Mobilization/Demobilization

1 LS

2 Sitework (Includes stormwater, access road)

1 LS

3 Pretreatment Facility

1 LS

4 Aeromod Biological Nutrient Removal

(includes control valves, blowers, compressors) 1 LS

5 Additional Aeration Basin to the existing

BNR Unit 1 LS

6 Chlorine Contact Chamber

1 LS

7 Onsite Reuse Pump Station

1 LS

8 Effluent Piping to RIBs

1 LS

9 Belt Filter Press Upgrades

1 LS

10 Yard Piping, Fittings, and Valves

1 LS

11 Electrical (including Area Lighting and

Generators) 1 LS

12 Instrumentation

1 LS

13 Storage/Chemical Feed Building

1 LS

14 Electrical Building

1 LS

15 Chemical Feed System

1 LS

TOTAL BASE BID (Numerical)

(including all work required by the contract documents and the allowances)

TOTAL BASE BID (Written):

______________________________________________________________ dollars

Chlorine Contact Chamber Coating (Additive Alternate) 16 Coating of Existing and New Chlorine

Contact Chambers 1 LS

TOTAL ADDITIVE ALTERNATIVE BID COST $

Bidder acknowledges that (1) each Bid Unit Price includes an amount considered by

Bidder to be adequate to cover Contractor’s overhead and profit for each separately identified item, and (2) estimated quantities are not guaranteed, and are solely for the purpose of comparison of Bids, and final payment for all unit price Bid items will be based on actual quantities, determined as provided in the Contract Documents.

ARTICLE 6 - TIME OF COMPLETION

6.01 Bidder agrees that the Work will be substantially complete and will be completed and ready for final payment in accordance with paragraph 15.06 of the General Conditions on or before the dates or within the number of calendar days indicated in the Agreement.

6.02 Bidder accepts the provisions of the Agreement as to liquidated damage.

ARTICLE 7 - ATTACHEMENTS TO THIS BID

7.01 The Invitation to Bid provides a list of all documents to be attached to and made a condition of the Bid:

ARTICLE 8 - DEFINED TERMS

8.01 The terms used in this Bid with the initial capitol letters have the meanings indicated in the Instructions to Bidders, the General Conditions, and the Supplementary Conditions.

ARTICLE 9 - BID SUBMITTAL

9.01 This Bid is submitted by:

If Bidder is:

An Individual

Name (typed or printed): ____________________________________________________

By: _____________________________________________________________________

(Individual’s signature)

Doing business as:

SEAL,

if required by State

A Partnership

Partnership Name: _________________________________________________________

By: _____________________________________________________________________

(Signature of general partner -- attach evidence of authority to sign)

Name (typed or printed):

A Corporation

Corporation Name:

State or Jurisdiction of Incorporation: ______________________________

Type (General Business, Profession, Service, Limited Liability):

By: ___________________________________________________________________

(Signature -- attach evidence of authority to sign)

Title: ____________________________________________

Attest ____________________________________________________________

(Signature of Corporate Secretary)

Date of Qualification to do business in ____________ [State or other jurisdiction where

Project is located] is ___/___/______

A Joint Venture

Name of Joint Venture:

First Joint Venture Name:

By: ____________________________________________________________________

(Signature of joint venture partner -- attach evidence of authority to sign) by State

CORPORATE

SEAL,

if required by State

SEAL,

Second Joint Venture Name:

By: ____________________________________________________________________

(Signature of joint venture partner -- attach evidence of authority to sign)

(Each joint venturer must sign. The manner of signing for each individual, partnership, and corporation that is party to the venture should be in the manner indicated above.)

Bidder’s Business address: __________________________________________________

Business Phone No. (_____)______________

Business FAX No. (_____)_____________

Business E-Mail Address

State Contractor License No. ____________________________________. (If applicable)

Employer’s Tax ID No. _______________________________________

Phone and FAX Numbers, and Address for receipt of official communications, if different from Business contact information:

9.02 Bid submitted on ______________________________, 2023.

M. Hagler P.E.

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25560.01 TABLE OF CONTENTS 0-1

ADDENDUM 2

TABLE OF CONTENTS

SUNDIAL WASTEWATER TREATMENT PLANT EXPANSION

Division Section Title Pages

PROCUREMENT AND CONTRACTING DOCUMENTS GROUP

DIVISION 00 - PROCUREMENT AND CONTRACTING REQUIREMENTS

1 - ITB 2025.10 SUNDIAL WASTEWATER TREATMENT PLANT EXPANSION INVITATION TO BID

2 – C-451 EJCDC QUALIFICATIONS STATEMENT 12

3 - C-200 EJCDC INSTRUCTIONS TO BIDDERS 12

4 - BID FORM 8

5 - C-430 EJCDC BID BOND 4

6 - C-510 EJCDC NOTICE OF AWARD 2

7 - C-520 EJCDC AGREEMENT 8

8 - C-550 EJCDC NOTICE TO PROCEED 2

9 - C-610 EJCDC PERFORMANCE BOND 4

10 - C-615 EJCDC PAYMENT BOND 4

11 – C-620 EJCDC APPLICATION FOR PAYMENT 2

12 – C-625 EJCDC CERTIFICATE OF SUBSTANTIAL COMPLETION 2

13 – EJCDC C-700 STANDARD GENERAL CONDITIONS 70

14 – EJCDC C-800 SUPPLEMENTARY CONDITIONS 2

15 – FDEP CERTIFICATE OF OWNERS ATTORNEY 2

16 – FDEP SUPPLEMENTARY CONDITIONS 26

17 – C-941 EJCDC CHANGE ORDER 2

SPECIFICATIONS GROUP

General Requirements Subgroup

DIVISION 01 - GENERAL REQUIREMENTS

01 10 00 SUMMARY 4

01 22 00 UNIT PRICES 12

01 25 00 SUBSTITUTION PROCEDURES 4

01 26 00 CONTRACT MODIFICATION PROCEDURES 4

01 29 00 PAYMENT PROCEDURES 6

01 31 00 PROJECT MANAGEMENT AND COORDINATION 12

01 32 00 CONSTRUCTION PROGRESS DOCUMENTATION 8

01 32 16 CONSTRUCTION PROGRESS SCHEDULE 4

01 32 33 PHOTOGRAPHIC DOCUMENTATION 4

01 33 00 SUBMITTAL PROCEDURES 12

01 40 00 QUALITY REQUIREMENTS 10

01 48 00 WATERTIGHTNESS TEST FOR PLANT TANKAGE STRUCTURES 8

01 50 00 TEMPORARY FACILITIES AND CONTROLS 10

01 57 23 TEMPORARY STORM WATER POLLUTION CONTROL 2

01 60 00 PRODUCT REQUIREMENTS 6

01 73 00 EXECUTION 10

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25560.01 TABLE OF CONTENTS 0-2

ADDENDUM 2

01 77 00 CLOSEOUT PROCEDURES 8

01 78 23 OPERATION AND MAINTENANCE DATA 8

01 78 39 PROJECT RECORD DOCUMENTS 6

01 79 00 DEMONSTRATION AND TRAINING 4

Facility Construction Subgroup

DIVISION 03 - CONCRETE

03 30 01 CAST-IN-PLACE CONCRETE– BUILDING AND SITE FLATWORK 20

03 30 02 CAST-IN-PLACE CONCRETE– PLANT TANKAGE 24

DIVISION 05 - METALS

05 50 00 METAL FABRICATIONS 12

05 51 20 PRE-ENGINEERED ALUMINUM STAIRS AND RAILINGS 10

05 52 10 ALUMINUM PIPE AND TUBE RAILINGS 12

05 53 00 GRATINGS 6

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 16 40 CONCRETE TANKAGE WATERPROOFING 8

07 92 10 JOINT SEALANTS – PLANT TANKAGE 10

DIVISION 09 - FINISHES

09 96 36 CHEMICAL-RESISTANT COATINGS FOR METALS IN WASTEWATER FACILITIES 12

09 97 26 CEMENTITIOUS COATINGS 6

Facility Services Subgroup

DIVISION 26 - ELECTRICAL

26 00 00 GENERAL ELECTRICAL REQUIREMENTS 12

26 05 19 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 8

26 05 26 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 10

26 05 29 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 8

26 05 33 RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS 12

26 05 43 UNDERGROUND DUCTS AND RACEWAYS FOR ELECTRICAL SYSTEMS 4

26 05 43.13 EXCAVATION AND BACKFILL 4

26 05 53 IDENTIFICATION FOR ELECTRICAL SYSTEMS 4

26 05 73 ELECTRICAL SYSTEM STUDIES 12

26 22 00 LOW-VOLTAGE TRANSFORMERS 8

26 24 16.13 LIGHTING AND APPLIANCE PANELBOARDS 8

26 24 16.16 DISTRIBUTION PANELBOARDS 8

26 27 26 WIRING DEVICES 4

26 28 13 FUSES 4

26 28 16 ENCLOSED SWITCHES AND CIRCUIT BREAKERS 8

26 29 23 VARIABLE-FREQUENCY CONTROLLERS 14

26 32 13 STANDBY POWER SUPPLY SYSTEM 20

26 36 23 AUTOMATIC TRANSFER SWITCHES 8

26 41 13 LIGHTNING PROTECTION FOR STRUCTURES 6

26 43 00 SURGE PROTECTIVE DEVICES 6

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25560.01 TABLE OF CONTENTS 0-3

ADDENDUM 2

26 51 00 LUMINARIES 10

Site and Infrastructure Subgroup

DIVISION 31 - EARTHWORK

31 10 00 SITE CLEARING 6

31 20 00 EARTH MOVING 14

31 20 02 CONTROLLED LOW-STRENGTH BACKFILL (FLOWABLE FILL) 4

31 23 01 EARTHWORK– BUILDING AND TANKAGE 12

31 23 17 TRENCHING 4

31 23 19 DEWATERING – TANKAGE 6

31 23 23 FILL 6

31 50 01 EXCAVATION SUPPORT AND PROTECTION – TANKAGE 6

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 92 00 SEEDING 2

32 92 01 SODDING 4

DIVISION 33 - UTILITIES

33 05 19 PRESSURE PIPING TIED JOINT RESTRAINT SYSTEM 4

33 31 23 SANITARY SEWERAGE FORCE MAIN PIPING 12

Process Equipment Subgroup

DIVISION 40 - PROCESS INTERCONNECTIONS

40 05 08 HANGERS AND SUPPORTS 4

40 05 13.01 PLANT PROCESS PIPE AND FITTINGS 12

40 05 23.25 VALVES 8

40 05 23.72 MISCELLANEOUS PROCESS VALVES 4

40 05 51 COMMON REQUIREMENTS FOR PROCESS VALVES 6

40 05 53 IDENTIFICATION FOR PROCESS PIPING 6

40 05 59.21 ALUMINUM SLIDE GATES 8

40 24 14 LIQUID CHLORINE AND SODIUM HYPOCHLORITE PIPING 6

40 73 13 PRESSURE GAUGES 6

40 95 10 SYSTEMS INTEGRATION 8

40 95 15 CONTROL PANEL CONSTRUCTION 8

DIVISION 43 - PROCESS GAS AND LIQUID HANDLING, PURIFICATION AND STORAGE

EQUIPMENT

43 23 32 PACKAGED BOOSTER PUMP STATIONS 16

43 41 45.01 HIGH-DENSITY CROSS-LINKED POLYETHYLENE STORAGE TANKS 8

DIVISION 46 - WATER AND WASTEWATER EQUIPMENT

46 05 53 IDENTIFICATION FOR WATER AND WASTEWATER EQUIPMENT 4

46 07 55 BIOLOGICAL NUTRIENT REMOVAL EQUIPMENT 14

46 21 13.03 MECHANICALLY CLEANED BAR SCREEN 12

46 21 74 SCREENINGS WASHER/COMPACTOR 12

46 23 24 VORTEX GRIT REMOVAL AND DEWATERING EQUIPMENT 14

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ADDENDUM 2

46 33 44.01 SKID-MOUNTED CHEMICAL METERING PUMP SYSTEM 6

46 33 44.02 PERISTALTIC METERING PUMP 10

ATTACHMENT

ATTACHMENT A GEOTECHNICAL EXPLORATION REPORT

END OF TABLE OF CONTENTS

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25560.01 PACKAGED BOOSTER PUMP STATIONS 43 23 32-1

ADDENDUM 2

SECTION 43 23 32 - PACKAGED BOOSTER PUMP STATIONS

1.1 SCOPE

A. The contractor shall furnish and install one factory built automatic water booster pumping sta-tion. The station shall be complete with all equipment factory assembled on a fabricated steel baseplate and enclosed within two fiberglass covers. The station shall be manufactured by

DAKOTA PUMP INCORPORATED, Mitchell, South Dakota. Dakota Pump is represented by

Pump and Process, Mr. Jeb Smith, (850) 525-2560. The internal equipment shall include two pumps and motors, piping and valves, ventilation systems, heaters, control panel, two pressure gauges, and all internal wiring.

1.2 MANUFACTURER

A. The manufacturer of the specified equipment shall be regularly engaged in the manufac-turing of packaged water boosters, packaged water control vaults, packaged water meter vaults and packaged sewage lift stations. The manufacturer shall have at least ten years of successful experience in manufacturing the above type of equipment. The entire equip-ment package specified shall be UL approved under the package pumping systems

(QCZJ). The specified equipment shall have a UL label certifying the package system is in compliance with the (QCZJ) UL listing. Equipment manufactured without the QCZJ

UL listing will not be accepted.

1.3 MATERIAL AND EQUIPMENT

A. In these specifications and on the accompanying drawings, there is specified and shown material and equipment deemed most suitable for the equipment and service anticipated.

This is not done, however, to eliminate manufacturers equally as admirable and efficient.

Contractors shall prepare their bid on basis of particular equipment and materials that is specified. Award of contract shall constitute contractual obligation to furnish specified equipment and materials unless the contractor desires to execute the following proce-dures.

1. Alternate equipment shall be considered if a full submittal package (6 copies) on the pump station is furnished to the engineer 14 days prior to the bid date and approved by the engineer in writing. The submittals shall include detailed information on the pump station components and scaled drawings specific of the station chamber, pumps, piping, and electrical. Alternate manufacturers not submitted and approved by the engineer 14 days prior to the bid date will not be considered.

2. After execution of contract, substitution of equipment of makes other than those named in the contract shall be considered for one reason only; the equipment proposed for substitu-tion is superior in construction and/or efficiency to that named in the contract and that high quality, low maintenance and satisfactory service have been demonstrated by at least

15 years of service in prefabricated booster installations.

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25560.01 PACKAGED BOOSTER PUMP STATIONS 43 23 32-2

ADDENDUM 2

3. In the event the contractor obtains engineer’s approval on equipment other than that which was specified, contractor shall, at his own expense, make any changes in struc-tures, buildings or piping necessary to accommodate equipment.

4. It will be assumed that cost to contractor of equipment proposed to be substituted is less than that of the equipment in the contract, and if a substitution is approved, the contract price shall be reduced by an amount equal to savings.

B. Booster Pump Station

1. This booster station has been designed using the Dakota Pump Inc. modular water booster product. Any requests for substitutions must be made in accordance with the re-quirements contained within the attached specifications. Any costs associated with the re-design costs, submittal review, or other substituted items associated with the evalua-tion of a substitute booster station will be prepaid to the engineer prior to consideration.

1.4 SUBMITTAL

A. Equipment submittals shall be bound in a minimum of six copies. The submittals shall contain a minimum of two full size (24”x36”) drawings. One drawing shall cover the station chamber with equipment and one drawing with the electrical control schematic. The station drawing shall be to scale and be specific to this project with a minimum of three different views and il-lustrate the National Electrical Code (NEC) clearances. The submittal booklets will be com-plete with data sheets covering all individual components that make up the package station and the UL file number under which the manufacture is listed and shall be complete with the manu-factures standard warranty policy. Each submittal shall be complete with a full size copy of the manufactures UL / manufacture logo Package Pumping Systems label.

1.5 CONSTRUCTION

A. The station shall be a complete factory engineered and built unit. The baseplate shall be fabri-cated from 3/8" minimum thickness 304 stainless steel plate with 8”/3” 304 stainless steel struc-tural channel reinforcement to resist deflections due to shipment and handling stresses.

B. The pump station shall be provided with two fiberglass enclosures. Each fiberglass enclosure shall be rectangular in shape and shall be designed to insure long life under typical weather con-ditions. The enclosure shall be insulated with 1" of polystyrene foam, sandwiched between the outer and inner fiberglass walls. The enclosure shall be hinged on one end and tilted for access to internal equipment. Two lifting handles shall be provided. A hold-open device and a wind safety chain shall also be provided. A padlock and hasp shall be provided to prevent unauthor-ized entry into the enclosure. Two keys on a keyring, complete with the manufacturer’s phone number and address, shall be provided.

C. Each enclosure shall include durable, long lasting, two stage, gas spring assist system. The as-sists shall be constructed with heavy gauge steel ends, Teflon back up rings for seal stability, heavy gauge steel body with heat cured paint, and chromium plated steel shaft with a minimum diameter of .393 inches. The handle lifting weight shall not exceed 50 pounds.

1.6 WELDING

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25560.01 PACKAGED BOOSTER PUMP STATIONS 43 23 32-3

ADDENDUM 2

A. All steel members shall be joined by electric arc welding, with welds of adequate section for the joint involved. Where possible, all joints shall be welded on both sides of the baseplate. All welds shall be continuous and watertight.

1.7 CORROSION PROTECTION

A. After all welding has been completed, all inside and outside surfaces of the structure shall be factory blasted to remove all rust, mill scales and weld slag. All weld spatter and surface rough-ness shall be removed by grinding. Surface preparation will comply with SSPC-SP10 specifica-tions. The blast profile on the steel should be 1.5 to 2.5 mils in depth and be of a sharp, jagged nature. Surfaces must be free of grit dust.

B. Following the cleaning, all weld areas shall be coated by hand brushing using Devoe High Per-formance Coatings Bar-Rust 235 multi-purpose epoxy coating. Following the hand coating, the balance of the structure shall be coated per the attached specification.

C. The structure and other exposed metal shall receive a 4-8 mils dry or 5.9 to 11.7 mils wet coat-ing of Devoe High Performance Coatings Bar-Rust 235 multi-purpose epoxy coating. The high solids coating shall be an advance technology epoxy and have exceptional corrosion protection.

The coating shall be suitable for salt and fresh water immersion. Solids by volume shall be 68%

+/- 2%.

D. A touch-up kit containing epoxy coatings, as specified above, shall be provided for the coating of all field welds and for repair of any scratches or abrasions that have occurred during ship-ment or installation..

1.8 PUMPS

A. Two KSB MovitecVSF060/011B1 vertical multi-stage centrifugal water pumps shall be in-stalled in the booster station. Each pump shall be capable of delivering 150 gallons per minute of water against a total dynamic head of 119 feet. The pumps shall have a maximum allowable speed of 3564 R.P.M., and the minimum rated horsepower of each motor shall be 10. Minimum pump efficiency shall be 70%, and the maximum net positive suction head required (NPSHR) shall be 11.48 feet.

B. The vertical multi stage pump shall include the following requirements. The head-capacity curve shall have a steady rise in head from maximum to minimum flow within the preferred op-erating region. The shut-off head shall be a minimum of 20% higher than the head at the best efficiency point. All pump bearings shall be lubricated by the pumped liquid. Small Vertical

In-Line Multi-Stage Pumps (Nominal flow from 3 to 125 gallons per minute) shall have the fol-lowing features as a standard. Each pump shall be designed for in-line installation requiring no more than 1.5 square feet of floor space (including motor). The pump impellers shall be se-cured directly to the pump shaft by means of a splined shaft arrangement. The suction/dis-charge base shall have ANSI (Class 250) or internal thread (NPT) connections as indicated on the plans or pump schedule. ANSI flanged bases shall be a slip ring (rotating flange) design.

Pump construction shall include the following requirements:

1. Suction/discharge base, pump head: Ductile Iron

2. Motor stool, base plate: Cast iron (ASTM Class 30)

3. Flange Rings: Ductile Iron (ASTM 65-45-12)

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4. Shaft 316 or 329 Stainless Steel

5. Impellers, diffuser chambers, outer sleeve: 316 Stainless Steel

6. Impeller wear rings: 316 Stainless Steel

7. Shaft journals and chamber bearings: Silicon Carbide

8. O-rings: EPDM

C. Shaft couplings for motor flange sizes 184TC and smaller shall be made of cast iron (ASTM

Class 30) or sintered steel. Shaft couplings for motor flange sizes larger than 184TC shall be made of ductile iron (ASTM 60-40-18). Optional materials for the base plate and flange rings shall be cast stainless steel (ASTM CF-8M). Stainless Steel flange rings have a Class 300 pres-sure rating. The shaft seal shall be a balanced o-ring cartridge type with the following features:

1. Collar, Drivers, Spring: 316 Stainless Steel

2. Shaft Sleeve, Gland Plate: 316 Stainless Steel

3. Stationary Ring: Silicon Carbide

4. Rotating Ring: Silicon Carbide

5. O-rings: EPDM

D. The Silicon Carbide shall be imbedded with graphite. Shaft seal replacement shall be possible without removal of any pump components other than the coupling guard, shaft coupling and motor. Pumps with motors equal to or larger than 15 hp (fifteen horsepower) shall have ade-quate space in the motor stool so that shaft seal replacement is possible without motor removal.

The maximum working temperature shall be 250 degrees F. The maximum working pressures are as follows:

Connection Type Maximum Working Pressure

Internal Thread (NPT) 232 psig

ANSI Flange 362 psig

Grooved Pipe (Victaulic Type) 362 psig

E. Shaft seal replacement shall be possible without removal of any pump components other than the seal cover, motor, motor couplings and coupling guard. Pumps with motors equal to or larger than 15 hp (fifteen horsepower) shall have adequate space in the motor stool so that shaft seal replacement is possible without motor removal. The maximum working temperature shall be 250 degrees F. The maximum working pressure shall be 232 psig or 365 psig as determined by the installation requirements.

F. Each pump shall be direct coupled to a 10 HP, 3500 RPM, 3 phase, 60 hertz, 230/460 volt, ODP, standard vertical NEMA C face electric motor, with a service factor of 1.15. Motor shall be of such size that it will operate continuously without exceeding its horsepower rating, exclu-sive of its service factor, over the entire performance curve. Motors shall be designed for continuous duty operation, NEMA design B with a 1.15 S.F. Motors are to be furnished with class "F" insulation. Motor nameplate shall be mounted on enclosure with stainless steel fas-tening pins. Nameplate shall have, as a minimum, all information as described in NEMA Stand-ard MG 1-10.40.1. Motors over 50 lbs shall having lifting provisions. Motors shall have a

NEMA C-Flange for vertical mounting. Drive end bearings shall be adequately sized so that the minimum L10 bearing life is 17,500 hours at the lowest allowable continuous flow rate for the pump. The motors shall be premium efficient for use with variable speed drives.

1.9 CONTROL SYSTEM

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A. The power distribution center and electrical controls shall be mounted in a common NEMA

Type 4C gasketed fabricated 304 stainless steel enclosure. The enclosure shall have a full open-ing door, mounted on heavy piano hinges. Suitable type latching devices shall be provided on the door. Starters, breakers, relays, timers and wiring raceway shall be neatly arranged on a re-movable steel back plate. All circuit breaker operators, selector switches, indicating lights, and single phase items shall be mounted on or through die cut openings in the enclosure door. A du-plex grounding type convenience outlet shall be mounted in die cut openings on the side of the enclosure, for operation of 115-volt devices. It shall not be necessary to open this enclosure, ex-cept for adjustment of controls. Additional enclosures may be used as necessary to meet power and control requirements.

B. The control panel shall conform to the National Electrical Code specifications and shall be UL listed and labeled in accordance with UL standards No. 508 for Industrial Control Panels. In accordance with U.L. procedures, a U.L. label shall be affixed to the control panel.

C. The Programmable Logic Controller shall be a MicroLogix 1400 as manufactured by Allen

Bradley. I/O shall be supplied to accommodate all control processes in the system while providing for a 10% spare density for future use. The booster station manufacturer shall be re-sponsible for the programming and satisfactory operation of the PLC System.

D. A 5.7” Color touch screen HMI shall be supplied. The unit shall be equal to a Square D Magel-lan. The HMI shall display include but not limited to:

1. Pressures Flows

2. Alarms Pump Status

3. Run Times Setpoints

E. All communication between the PLC’s, HMI’s, and Modems shall be via Ethernet. An unman-aged Ethernet switch shall be provided at each location where these devices are present. The switch shall have a minimum of 5 ports and be equal to a Phoenix Contact SFN5TX

F. The programming shall be supplied to the owner on transferrable media and shall be fully com-mented and documented. OEM Coding, Locking, or making proprietary any portion of the con-trol system programming will not be accepted.

G. The control panel shall be provided with a web based Cloud 9 Monitoring System integrated into the control panel hardware / software equipment. This functionality shall utilize the pump station PLC and shall not require any additional RTU devices. The Cloud 9 monitoring system will include a cellular modem and applicable software that will enable the PLC system to moni-tor pump status, monitor discharge pressure signals, and monitor tank level signals to the cus-tomers web accessible computer, tablet, or smart phone. The Owner is responsible for internet access, including expenses, for their monitoring devices. In addition to the monitoring, the

Cloud 9 system shall allow the factory automation engineers / technicians the ability to modify

PLC programming remotely, if needed, during start-up services. Any changes to the PLC /

HMI programming after start-up service date will be billed at standard billing rates. The Cloud

9 monitoring system will include a 90 day basic trial subscription to commence the day of start-up (not to exceed 180 days from station delivery date). If the Owner chooses to continue the

Cloud 9 services beyond the 90 day trial date, a Cloud 9 system service contract must be signed by the Owner prior to the trial expiration date to avoid any gap in service. All customer interac-tion with the Cloud 9 System during the trial period shall be “read only” and will not include any remote control or set point features. Upon commencement of a paid subscription agreement

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and acceptance of the terms and conditions, additional features desired by the owner may be added.

H. Properly sized, heavy duty, molded case thermal-magnetic air circuit breakers shall be provided for branch circuit disconnect service and for over-current protection of all control, motor and auxiliary circuits.

I. To protect the motors from single phasing, low voltage, voltage unbalance and reverse phasing, a phase monitor shall be supplied with the pump station controls. The phase monitors voltage and phase sensing circuit shall constantly monitor the three phase line voltages and detect harm-ful power line conditions. When any of the conditions occur, and output relay shall be deac-tivated until power line conditions return to an acceptable level. Trip and reset delays shall be provided to prevent nuisance tripping due to rapid power fluxuations.

J. To protect the electrical system and equipment from damage due to excessive line surges caused by lightning or other circuit disturbances, a secondary surge arrester shall be supplied with the pump station controls. The arrester shall comply with ANSI standard C62.11-1987. The ar-rester shall be available in a one-pole, two-pole or three-pole version, and be suitable for both indoor and outdoor use. The arrester shall be permanently sealed in a LEXAN housing. The arrester shall have a maximum continuous operating voltage rating of 650 volts rms. The per-missible line-to-line voltage of the system to which the arrester is applied depends on the circuit configuration, grounding, and voltage regulation. The secondary surge arrester shall be a Sq D

SDSA3650 for three phase and SDSA1175 for single phase applications.

K. The package shall be provided with a water on the floor indication sensor. The sensor shall work by forming a conductive bridge between two electrical contacts. The sensor shall not alarm due to high humidity or condensation. The sensor shall work on 12V or 24V AC or DC.

The sensor output shall be 1 Amp @ 24Vac. The sensor shall be provided with a 12VDC power supply.

L. The package station shall be supplied with a low voltage temperature thermostat. The thermo-stat voltage rating shall be 120/240 VAC. The contact current rating resistive @ 120VAC 22

Amps, the contact current rating resistive @ 240 VAC 22 Amps, the Inductive rating @ 120

VAC 13.8 Amps, and the inductive rating @ 240 VAC 10 Amps. The sensor type shall be bi-metal. The switch type shall be SPDT. The control range shall be -10 to 100 degrees F. The temperature differential shall be 3 ½ degrees F.The switch action shall be open/close on rise.

M. Six digit, non-resettable elapsed time meters shall be provided to record the running time of each pump motor. These devices shall be mounted in die cut openings in the enclosure door.

N. Hand-Off-Automatic switches shall be oil tight, 2 or 3 position, and grouped conveniently with oil tight, full voltage indicating lights, on the panel door. Indicating lights shall identify the fol-lowing functions:

1. Red - Low suction pressure.

2. Red - High discharge pressure.

3. Green - Pump #1 running.

4. Green - Pump #2 running.

1.10 WIRING

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ADDENDUM 2

A. Wiring of the water booster station shall be in accordance with the National Electrical Code

(NEC). The pumping station interior shall be completely wired at the factory, except for power entrance wiring and external connections. All internal wiring shall be run in conduit. The pump-ing station shall be wired for three phase, 60 hertz, 460 volt power.

B. A 3 KVA dry type single-phase power transformer shall be provided to supply power to the sta-tion single-phase loads. The transformer shall have a dust tight enclosure and shall be suitable for wall mounting. The transformer shall have Class H insulation and shall be UL approved for indoor applications.

C. The heater, ventilation blower, and all 115-volt devices, shall be supplied with suitable lengths of 660 volt, 14-3 rubber covered power cord. These items shall plug directly into outlets, which are identified by engraved plastic nameplates.

D. All wiring in the control panel shall be color-coded. Power wiring from the control panel to the pump motors shall be enclosed in polyvinyl covered flexible steel conduit, with compatible grounding fittings. All conduit and wires shall be sized for the maximum anticipated load. All conduits shall be neatly arranged and secured to the baseplate as required.

1.11 VFD

A. Furnish complete VFD’s as specified herein or in the equipment schedule for loads designated to be variable speed. VFD’s shall be user-selectable for either constant or variable torque loads.

The VFD shall convert incoming fixed frequency three-phase AC power into a variable fre-quency and voltage for controlling the speed of three-phase AC induction motors. The VFD shall be a six-pulse input design, and the input voltage rectifier shall employ a full wave diode bridge; VFD’s utilizing controlled SCR rectifiers shall not be acceptable. The output waveform shall closely approximate a sine wave. The VFD shall be of a PWM output design utilizing cur-rent IGBT inverter technology and voltage vector control of the output PWM waveform.

B. The VFD shall include a full-wave diode bridge rectifier and maintain a displacement power factor of near unity regardless of speed and load, shall produce an output waveform capable of handling maximum motor cable distances of up to 1,000 ft. (unshielded) without tripping or de-rating, and shall utilize VVCPLUS, an output voltage-vector switching algorithm, or equivalent, in both variable and constant torque modes. VVCPLUS provides rated RMS fundamental volt-age from the VFD. This allows the motor to operate at a lower temperature rise, extending its thermal life. VFD’s that cannot produce rated RMS fundamental output voltage or require the input voltage to be increased above motor nameplate value to achieve rated RMS fundamental output voltage are not acceptable. VFD’s that utilize Sine-Coded PWM or Look-up tables shall not be acceptable.

C. The VFD selected must be able to source the motor’s full load nameplate amperage (fundamen-tal RMS) on a continuous basis, and be capable of running the motor at its nameplate RPM, voltage, current, and slip without having to utilize the service factor of the motor. The VFD shall offer a programmable motor parameter that allows the total number of poles of a motor to be programmed to optimize motor performance. VFD shall automatically boost power factor at lower speeds. The VFD will be capable of running either variable or constant torque loads. In variable torque applications, the VFD shall provide a CT-start feature and be able to provide full torque at any speed up to the base speed of the motor. In either CT or VT mode, the VFD shall

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ADDENDUM 2

be able to provide its full rated output current continuously and 110% of rated current for 60 seconds.

D. An Automatic Energy Optimization (AEO) selection feature shall be provided in the VFD to minimize energy consumption in variable torque applications. This feature shall optimize mo-tor magnetization voltage and shall dynamically adjust output voltage in response to load, inde-pendent of speed. Output voltage adjustment based on frequency alone is not acceptable for single motor VT configurations.

E. For multi-motor variable torque configurations, user-selectable load profile curves including

VT-High, VT-Medium, and VT-Low shall be provided to ensure easy commissioning and im-proved energy efficiency. VFD’s requiring the operator to assign load torque data-points to cre-ate a V/Hz profile, are not acceptable. An initial ramp function shall be available to provide a user-selectable ramp, up to 60 seconds, for applications requiring a faster or slower ramp than the normal ramp. A Dual Ramp Down feature shall include a Check Valve Ramp Down and a final Ramp feature. The Check Valve Ramp Down shall be programmable to gently seat a check valve and reduce the potential of damage from excess pressure while shutting-down the system. Both time and end speed shall be programmable. On the Final Ramp, the VFD shall be programmable to quickly stop the motor after seating of a check valve or for a more rapid stop-ping than the normal ramp down setting.

F. VFD shall offer up to 4 separate PID controllers. One controller shall operate the drive in closed loop, while the other 3 provide control signals to other equipment. VFD’s with PI con-trollers only are not acceptable.

G. An Auto tuning PI controller output feature shall provide automated PI controller settings.

Once the user accepts the settings, the VFD will save the settings to memory.

H. An empty pipe fill mode shall be available to fill an empty pipe in a short period of time, and then revert to the PID controller for stable operation. Pipe fill mode shall have a programmable time to reduce water hammer in the system or fill the pipe at a unit per time rate. VFD shall of-fer a motor spinning test that will run the motor at 5 Hz until the OK button is pressed. This feature will allow the user to determine if the motor is running in the correct direction. An em-bedded cascade pump controller shall be included to provide lead pump alternation and provide control for up to 3 total pumps. The VFD Pump and 2 other pumps can be controlled either by a starter or soft starter.

I. Switching of the input power to the VFD shall be possible without interlocks or damage to the

VFD at a minimum interval of 2 minutes. Switching of power on the output side between the

VFD and the motor shall be possible with no limitation or damage to the VFD and shall require no additional interlocks.

J. An Automatic Motor Adaptation (AMA) function shall measure motor stator resistance and re-actance to optimize performance and efficiency. It shall not be necessary to spin the motor shaft or de-couple the motor from the load to accomplish this optimization. Additionally, the param-eters for motor resistance and motor reactance shall be user-programmable.

K. The VFD shall have temperature controlled cooling fans for quiet operation, minimized internal losses, and greatly increased fan life.

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L. VFD shall provide full torque to the motor, given input voltage fluctuations of up to +10% to -

10% of the rated input voltage (525 to 690VAC, 380 to 480VAC, or 200 to 240VAC). Line fre-quency variation of ± 2% shall be acceptable.

M. The VFD shall provide internal DC link reactors to minimize power line harmonics and to pro-vide near unity power factor. DC Link reactor shall be installed so that power fluctuations to the DC Capacitors shall be reduced to increase Capacitor life. VFD’s without a DC link reactor shall provide a 5% impedance line side reactor and provide spare capacitors.

N. VFD protective features: VFD shall have input surge protection utilizing MOV’s, spark gaps, and Zener diodes to withstand surges of 2.3 times line voltage for 1.3 msec. VFD shall include circuitry to detect phase imbalance and phase loss on the input side of the VFD. VFD shall auto-derate the output voltage and frequency to the motor if an input phase is lost. This result will maintain operation without decreasing the life expectancy of the VFD. The use of this fea-ture shall be user selectable and export a warning during the event. Printed Circuit boards shall be conformal coated to reduce the corrosion effect from environmental gases and other condi-tions The conformal coating must meet IEC 61721-3-3, Class 3C2 as standard and the VFD shall have an optional 61721-3-3, Class 3C3 coating available. Automatic “No-Flow Detec-tion” shall be available to detect a no-flow situation in pump systems where all valves can be closed. This shall be functional in closed loop control or when controlled by an external signal.

Dry-pump detection shall be available to detect if the pump has run dry. If this condition oc-curs, the drive will be safely stoppred. A timer shall be included to prevent nuisance tripping.

End-of-Pump curve detection shall stop motor when the pump is operating outside of its pro-grammed pump curve. VFD shall provide a flow compensation program to reduce energy by adjusting the Setpoint to match changes in flow (friction loss). Flow compensation shall also operate in Cascade control mode. VFD shall include current sensors on all three-output phases to detect and report phase loss to the motor. The VFD will identify which of the output phases is low or lost.

O. VFD shall auto-derate the output voltage and frequency to the motor in the presence of sus-tained ambient temperatures higher than the normal operating range, so as not to trip on an in-verter temperature fault. The use of this feature shall be user-selectable and a warning will be exported during the event. Function shall reduce switching frequency before reducing motor speed.

P. VFD shall…