addendum no. 2 - pentictonand~rfps... · 2017-08-04 · 4.2 add the following drawings to the...

P:\60329780\400-Technical\402 Tender Documents\B - Construction Contract\Issued For Tender PDF\Addendums\Addendum #2\Addendum 2.doc

ADDENDUM NO. 2

PROJECT: Penticton Advanced Waste Water Treatment

Plant

PAGE: 1 of 3

Fermenter Upgrade DATE: November 20, 2014 2014‐TENDER‐12 FERMENTER UPGRADE PROJECT NO.: 60327980 CONTRACT NO.: DISTRIBUTION: OWNER: City of Penticton Owner ( X )

171 Main Street Bidders ( X )

Penticton, BC Resident Eng. ( )

V2A 5A9 File ( X )

ISSUED BY: Brandon Stearns

TO ALL BIDDERS OF RECORD

1. GENERAL 1.1 This Addendum is issued prior to Tender closing to provide for certain revisions as noted herein. 1.2 All such revisions will become part of the Work and the effects shall be included in the Tender Price. 1.3 All work shall be performed in accordance with the Contract Documents.

2. SECTION 16015 – SCOPE OF WORK (ELECTRICAL)

2.1 Delete Item 1.6.2.3 in its entirety and replace with “Intentionally Deleted.”

2.2 Revise Item 1.6.2.4 to read: “Provide 25kVA 3phase transformer 480VAC to 120/208VAC.”

2.3 In Item 1.6.2.18 delete last sentence as follows: “Provide an Intrinsically Safe isolation relay for the fermenter mechanism torque switch.”

2.4 Add Item 1.6.2.42 to read:

“Provide the stand alone starter (FVNR) in NEMA 4 enclosure c/w associated Motor Circuit Protector c/w door mounted handle, contactor, terminals, relays, Local‐Off‐Remote door mounted switch, door mounted fault reset button, push‐to‐test LED indication lights (MCP fault‐ red indication light, running status, green indication light and Oil high temperature – amber indication light), control transformer with protection fuses for 07‐FAN‐103 (Fermenter Mechanism Cooling Fan Motor). The control panel shall be labeled: 07‐LCP‐103B Fermenter Mechanism Oil Cooling Fan”

2.5 Add Item 1.6.2.43 to read:

“It is the contractor’s responsibility to provide install all equipment Provide the stand alone starter (FVNR) in NEMA 4 enclosure c/w associated Motor Circuit Protector c/w door mounted handle, contactor, terminals, relays, Local‐Off‐Remote door mounted switch, door mounted fault reset button, push‐to‐test LED indication lights (MCP fault‐ red indication light, running status, green indication light and Oil high temperature – amber indication light), control transformer with

ADDENDUM NO. 2 DATE: November 20, 2014 PROJECT NO.: 60327980 PAGE: 2 of 3 CONTRACT NO.:

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protection fuses for 07‐FAN‐103 (Fermenter Mechanism Cooling Fan Motor). The control panel shall be labeled: 07‐LCP‐103B Fermenter Mechanism Oil Cooling Fan”

3. SECTION 17015 – INSTRUMENTATION AND CONTROL SCOPE OF WORK (INSTRUMENTATION)

3.1 In Item 1.2.1.3.2 add the following to the list:

“12. 07-TSH-103A – Fermenter Mechanism Oil Tank High Temperature Switch 13. 07-TSH-103B – Fermenter Mechanism Fan Temperature Switch (through 07-LCP-103B) 14. 07-LSL -103 – Fermenter Mechanism Low Oil Level Switch”

3.2 In Item 1.2.1.3.4 add the following to the list:

“.5 07-SOV-103A Forward Direction Solenoid Valve Control”

4. DRAWINGS

4.1 Replace selected drawings from the current Tender drawings as follows:

4.1.1 P-01 Process – Fermenter 3 and FPS Pumps – Process & Instrumentation Diagram Rev 1 (replaces Rev 0)

4.1.2 S-01 Structural – Fermenter General Arrangement – Structural Modifications Rev 1 (replaces Rev 0)

4.1.3 E-02 Electrical – Single Line Diagram Rev 1 (replaces Rev 0)

4.1.4 E-03 Electrical – Interconnection Diagram Rev 1 (replaces Rev 0)

4.1.5 E-04 Electrical – Fermenter General Arrangement – Electrical Location Plan Rev 1 (replaces Rev 0)

4.1.6 E-06 Electrical – General Motor Schematic – Full Voltage Non-Reverse Rev 1 (replaces Rev 0)

4.1.7 I-02 Instrumentation and Controls - Fermenter General Arrangement – Instrumentation Plan Rev 1 (replaces Rev 0)

4.2 Add the following drawings to the current Tender drawings:

4.2.1 E-09 Electrical – 07-LCP-103B Rev 0

5. PRE‐TENDER MEETING NOTES

5.1 See the attached Pre-Tender Meeting Notes from the Mandatory Pre-Tender Meeting Nov 18, 2014.

5.2 See the attached Contractor Sign-in Sheet.

ADDENDUM NO. 2 DATE: November 20, 2014 PROJECT NO.: 60327980 PAGE: 3 of 3 CONTRACT NO.:

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All Tenderers shall acknowledge receipt and acceptance of this Addendum by signing in the space provided and submitting the signed Addendum with the Tender. Tenders submitted without this Addendum may be considered incomplete.

Receipt acknowledged and conditions agreed to this _____ day of __________, 2014.

__________________________________ ________________________________

Tenderer Signature

AECOM

201 – 3275 Lakeshore Road 250 762 3727 tel

Kelowna, BC, Canada V1W 3S9 250 762 7789 fax

www.aecom.com

Pre-Tender Meeting Notes

Mtg-18 November 2014-Pre-Tender Meeting Notes.Doc

Date of Meeting November 18, 2014 Start Time 10:00 am Project Number 60329780

Project Name City of Penticton – Advanced Waste Water Treatment Plant Fermenter Upgrade

Location 459 Waterloo Avenue, Penticton, BC

Regarding Pre-Tender Site Meeting Notes

Written by Kevin Witzke (AECOM)

ITEM DESCRIPTION

1.1

Introductions

The Owner is the City of Penticton and the key personnel include: Ian Chapman, City Engineer (not in attendance)

Randy Craig, AWWTP Supervisor

Cathy Ingram, Purchasing Manager (not in attendance)

The Contract Administrator/Consultant is AECOM and the key personnel include:

Brandon Stearns, Project Manager (not in attendance)

Les Nemeth, Project Engineer

Kevin Witzke, Design Tech.

1.2 General

Attending Contractors and Trades were welcomed to the Mandatory Pre-Tender Meeting and the Sign-in Sheet that was distributed, completed and received.

1.3 Schedule

The anticipated Tendering, Construction and Completion Schedule is as follows:

Issue of Tender Documents – November 7, 2014

Addendum 1 – November 14, 2014

Tender Close – December 9, 2014, 3:00 p.m. local time

Mandatory Bidder’s Meeting – November 18, 2014

Anticipated Award – December 15, 2014

Anticipated 7 Month Construction Period

Substantial Completion – June 30th, 2015

Total Completion – July 31st, 2015

It was noted that Addendum 1 was made available Nov 14 and that it is the responsibility of Bidders to check the City of Penticton Tenders website for Addenda and Bidding information. Additional Addenda may be distributed during the Tender period. Addendum 2 is currently being prepared and will be made available Nov 20.


November 18, 2014


ITEM DESCRIPTION

1.4 Equipment Pre-Purchase Contract

WesTech is the Fermenter Mechanism supplier selected through the pre-purchase process. A Novation Agreement is in place where the Contractor will assume the responsibility for completing the supply and installation requirements of the equipment.

The City is paying for the Shop Drawing review process with the remaining commercial terms assumed by the Contractor. The Fermenter Mechanism price will appear as a line item in the Tender Form. It is anticipated that the equipment will arrive in mid-April 2015.

The first review of the shop drawings has been completed by AECOM and is being addressed by WesTech.

The WesTech equipment contract includes the v-notch weir but not the stainless steel launder. The supply of v-notch weir fasteners and equipment anchors is to be confirmed by the bidders in their review of the Fermenter Mechanism shop drawings.

1.5 Project Description – General Overview (Section 01010)

The general scope of work was discussed and the following items summarized:

Demolition, alteration, salvage, repair, and renovation of existing digester buildings, structures, equipment, etc.

Convert existing Digester 1 tank to new Primary Sludge Fermenter 3

Installation of WesTech Primary Sludge Fermenter Mechanism equipment (Supply Contract novated to Contractor)

Supply and install FRP cover (lead time expected to be 10 weeks)

Modify orientation of existing macerators and sludge pumps.

New and upgraded HVAC mechanical systems

Upgrades and modifications to existing electrical, instrumentation and control systems

Existing Building Improvements (roof, door, expose plumbing, repainting)

Supply and install new FSU Splitter Box

Miscellaneous civil works including yard piping, asphaltic paving, finish landscaping, and demolition/removal

1.6 Work by Others

The supply and installation (and relocation) of instrumentation is by the Contractor. System Integration (SCADA/PLC programming) will be performed by Interior Instrument Tech Services Inc.(Daryl Moore was in attendance) and City of Penticton Plant personnel.

A survey of hazardous materials associated with the scope of this project was conducted (identified in Appendix B – Hazardous Materials Reports) and an abatement program assigned to Stutters Construction. The removal of hazardous materials is due to be completed before the award of construction contract (likely the end of November)

Peak Consultants will review the project to advise if there are specific WorkSafe BC requirements.


November 18, 2014


ITEM DESCRIPTION

1.7 Tour of Facility

The Contractors were led around the site and a brief description of activities and each location was discussed. Contractors are invited to re-visit the site however the staff will not answer specific questions. All questions are to be submitted to Cathy Ingram.

It was noted that Septage is received by the plant on a regular basis and that the deliveries should not be interrupted by Contractor activities. The approximate location of PS, NPW and FOA excavations and tie-ins was discussed and there appears to be sufficient room to avoid conflicts.

The biogas equipment is to be relocated by the Contractor to a designated location on the plant site. The concrete slab/apron is to remain.

The two existing digesters are to have their “floating” roofs removed as described in the documents. There are some pipes and mechanism components to be removed from each tank.

1.8

Sequence of Works (Section 01015 – Work Sequence and Tie-Ins)

The plant is in operation 24 hours and day and there can be no interruptions other than those coordinated with the City of Penticton operations staff.

The existing piping in and connected to the existing Digester/New Fermenter structures, as well as electrical services, have been isolated from service. Pipes have been cleaned. The existing digester tanks have been emptied of wastewater commodities however they may contain groundwater and/or rainwater.

The FSU Splitter Box and associated piping and valves are to be installed to allow for continuous flow of FSU from existing fermenters, Bioreactors must remain online with no provision to drain. It is anticipated that the Contractor will install a plug in the existing 150mm FSU pipes where it enters the Bioreactor. Only one FSU pipe at a time can be isolated from service.

The Contractor is to coordinate with operations personnel tie-in requirements including: FSU, PS, NPW, FOA

1.9 Correspondence

All questions are to be directed to Cathy Ingram, purchasing manager, via email ([email protected])

Answers will be made available through Addenda posted to the City of Penticton website.

1.10 Addendum Items

Addendum 1 was issued November 14, 2014 and is available at the City of Penticton website.

Addendum 2 to follow later this week

1.11 Question and Answer

A number of questions were raised after the tour.

1) What are the areas noted as requiring “sandblasting?” Within the existing boiler building the east wall of the main controls/pumping room is painted brick. With the demolition of the boiler building and gas recirculation building, the intent is to sandblast the paint off the brick to restore the masonry to match the


November 18, 2014


ITEM DESCRIPTION remainder of the controls/pump building exterior.

2) Are the existing digester tanks empty? The two existing digester tanks have been pumped dry of existing wastewater commodities (sludges). They have been empty some time and may have accumulated rainwater or perhaps groundwater may have infiltrated slightly.

3) Barski representatives asked if the new concrete liner wall could have a recesses formed to rest the FRP roof beams on? The Contractor can coordinate and propose bearing locations to AECOM.

4) Are the Fermenter Mechanism anchors supplied by WesTech? The Contractor can review the shop drawing submittal (in Addendum 1) to confirm the supply of fasteners.

5) Have process pipes been cleaned? The process pipes between the tanks and the digester building/structures have been flushed and cleaned.

6) Double Block and Bleed inquiries. (WorkSafe BC Clarification – by City)

a. Part 9 “Confined Space” adjacent piping will be controlled by blinding (Part 9.20) for the existing digester tank.

b. City will supply existing Hazard Identification/Risk Assessment (HIRA) for existing Digester tank #1. Contractor shall be responsible for any future HIRA’s required by the work to be undertaken.

c. “Double Block and Bleed”, there is no mention in the WorkSafe BC OHS Regulations (Part 20) “Excavation” in regards to “Double Block and Bleed”, “Double Block and Bleed” is referenced in “Confined Space Entry” (Part 9). Site specific Hazard Assessment may be required as per Part 9 Guidelines G9. 1-1 “Excluded Confined Spaces”.