addendum no. 1 itb no. 4568 city of ann arbor, water treatment services unit wtp … ·...
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Addendum-1-1
ADDENDUM No. 1
ITB No. 4568
City of Ann Arbor, Water Treatment Services Unit WTP UV Disinfection System
Bids Due: February 28, 2019 at 2:00 P.M. (Local Time)
The following changes, additions, and/or deletions shall be made to the Invitation to Bid for WTP UV Disinfection System Project, ITB No. 4568, on which proposals will be received on/or before February 28, 2019, at 2:00 P.M. (local time). The information contained herein shall take precedence over the original documents and all previous addenda (if any), and is appended thereto. This Addendum includes 4 pages, plus Appendices. Bidder is to acknowledge receipt of this Addendum No. 1, including all attachments (if any) in its Bid by so indicating on page ITB-1 of the Invitation to Bid Form. Bids submitted without acknowledgment of receipt of this addendum will be considered nonconforming. The following forms provided within the ITB document must be included in submitted bids:
• City of Ann Arbor Prevailing Wage Declaration of Compliance • City of Ann Arbor Living Wage Ordinance Declaration of Compliance • Vendor Conflict of Interest Disclosure Form • City of Ann Arbor Non-Discrimination Ordinance Declaration of Compliance
Bids that fail to provide these completed forms listed above upon bid opening will be rejected as non-responsive and will not be considered for award.
Addendum-1-2
I. CORRECTIONS/ADDITIONS/DELETIONS
Changes to the Bid document which are outlined below are referenced to a page or Section in which they appear conspicuously. The Bidder is to take note in its review of the documents and include these changes as they may affect work or details in other areas not specifically referenced here. Section/Page(s) Change Appendix Add Asbestos Survey Results (See Attached)
Appendix Add Bidders Checklist (See Attached)
Appendix Add Pre-Bid Attendance Sign-In Sheet (See Attached)
44 44 73, para. 2.07.A.1
All electrical components inside control panel are to be housed in stainless steel, painted steel, NEMA 4X or greater equivalent rated enclosures, unless indicated otherwise. Lamp ballast enclosure panel sections may be NEMA 12 equivalent rating as necessary to comply with Cooling and Heating requirements in Section 2.07.G.
44 44 73, para. 2.07.E.1
House electrical components in NEMA 4X enclosure as defined in Section 2.07.A.1.
44 44 73, para. 2.08.F.1 The following signals shall be available to the UV System from the UV Master Control Panel (by Others) through PLC Ethernet Network as a minimum:
44 44 73, para. 2.08.F.2 The following signals are to be sent to the UV Master Control Panel (by Others) via Ethernet/IP:
40 27 00, Supplement 2-2, Pipe Schedule.
Add the following line item to the pipe schedule:
FW Clearwell Inter-
connect Pipe
FW 30” EXP CLDI 40 27 00.01 FL Note 2 100, H “Filter Effluent”, “Finished Water”
Notes 4 and 5.
Addendum-1-3
Drawing Number Change 001-G-001, Title Sheet
Replace Sheet 001-G-001 with Addendum 1 Sheet 001-G-001.
001-G-006, Structural Notes and Project Sign Detail
Replace Sheet 001-G-006 with Addendum 1 Sheet 001-G-006.
003-N-002, UV Disinfection System P&ID
On 36” FW line to Reservoir, change “6-Inch UVE DR” to “4-Inch UVE DR”.
020-D-301, Transfer Pump and UV Room Sections, Section A
Change “6-Inch V500” to “4-Inch V500 and change “6-Inch UVE DR (CLDI)” to “4-Inch UVE (CLDI)”.
020-D-303, Transfer Pump and UV Room Sections, Section D
Change “6-Inch V500” to “4-Inch V500 and change “6-Inch UVE DR (CLDI)” to “4-Inch UVE (CLDI)”.
020-D-221, Sub-Basement and Basement Plan – EL 967.50
Change note “30-Inch Clearwell Interconnect Pipe” to “30-Inch FW Clearwell Interconnect Pipe”.
020-D-221, Sub-Basement and Basement Plan – EL 967.50
Add note to bends on 30” FW Clearwell Interconnect Pipe to read “30-Inch 45 deg bend, Typ of 2”.
020-D-306, Sub-Basement and Basement Sections, Section G
Change note “30-Inch Clearwell Interconnect Pipe” to “30-Inch FW Clearwell Interconnect Pipe”.
020-S-301, Transfer Pump and UV Room Sections and Details, Detail 2 (020-S-210)
Add note “Provide ¼” x 3” steel pipe strap. Fasten to concrete pipe support with ¾” adhesive anchors, 5” embedment, minimum 4” from edge of concrete.”
090-STD-902, Standard Details, Detail 0553-001
Add to note 2 “Removable grating sections shall be constructed of Aluminum, 1 ¾” depth.”.
Addendum-1-4
II. QUESTIONS AND ANSWERS The following Questions have been received by the City. Responses are being provided in accordance with the terms of the ITB. Bidders are directed to take note in their review of the documents of the following questions and City responses as they affect work or details in other areas not specifically referenced here. Question 1: On 020-D-210, can a sleeve be used for the 4” drain on the 24” UVI? Answer 1: No, bid as shown. Question 2: Please clarify how the UV Master Control Panel (UV MCP) is supplied in Scope of
Work. Answer 2: The UV MCP is to be supplied as part of the General Contractor Scope of Work,
as specified in Section 40 90 00, and is not specified to be included as part of the UV System Supplier scope of work per Section 44 44 73, UV System. The UV System Supplier will be responsible for ensuring the minimum I/O is provided to/from the UV system to the UV MCP as described in the Contract Documents for a complete and functional system.
Question 3: Note that the UV system control/power panels are specially design and tested for
the specific types of heat loads and to cool the lamp ballasts within their tolerances. Answer 3: Noted, but panel heaters are still required. The panel heaters are thermostatically
controlled, so if the ballasts are creating enough heat, the panel heater(s) will be off. When the reactors are not running and are sitting idle, the panel heaters shall be ON to prevent condensation inside the panels.
Respondents are responsible for any conclusions that they may draw from the information contained in the Addendum.
2018 Construction APDX-1
APPENDIX
ITB 4568 - WTP Disinfection System
Bid Submission Checklist Bid Due Date: February 28, 2019 by 2:00 p.m.
Bids: 1 original, 5 copies Bid
Bond/Certified Check
Invitation to Bid: ITB-1 & ITB-2
Legal Status of Bidder: ITB-3
Bid Form-
Section 1 - Schedule of Prices: BF-1
Section 2 - Alternate #1: BF-2
Section 3 -Alternate #2: BF-3
Section 4 - Material, Equipment, Alternate: BF-4 Section 5 - Time Alternate: BF-5
Section 6 - Major Subs and Suppliers: BF-6
Section 7 - References:
BF-7 through BF-9; include resumes per instructions to Bidders, page IB-3
Prevailing Wage Declaration of Compliance
Living Wage Ordinance Declaration of Compliance
Vendor Conflict of Interest Disclosure Form
Non Discrimination Ordinance Declaration of Compliance
MDEQ DWRF Good Faith Effort Worksheets and supporting documents -One for each subcontracted discipline
Certification Regarding Debarment, Suspension, and Other Matters
American Iron and Steel Contract Language - Complete and signed at the bottom
Submit in Sealed Envelope Labeled: "ITB 4568 Ann Arbor WTP UV Disinfection System"
HA # ROOM# / LOCATION FLOOR DESCRIPTION POS or NEG
1 Mechanical Room B Pipe Gasket - Clear Well Interconnect Piping Positive3 Mechanical Room B Pipe Gasket - Transfer Pump Piping Positive2 Mechanical Room B Wall Gasket - Clear Well Interconnect Piping Negative
INSPECTION DATE - 12/17/2018
LIMITED BUILDING MATERIAL SURVEY OFSUSPECT ASBESTOS CONTAINING MATERIALS
CITY OF ANN ARBOR - WATER TREATMENT PLANT UV INSTALLATION PROJECT
City of Ann Arbor Page 1Materials containing >1% asbestos are
regulated asbestos containing materials
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THIS DOCUMENT, AND THE IDEAS AND DESIGNS INCORPORATED HEREIN, AS AN INSTRUMENT OF PROFESSIONAL SERVICE, IS THE PROPERTY OF
JACOBS AND IS NOT TO BE USED, IN W HOLE OR IN PART, FOR ANY OTHER PROJECT W ITHOUT THE W RITTEN AUTHORIZATION OF JACOBS.JACOBS 2019. ALL RIGHTS RESERVED.c
JA
NU
AR
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019
W TP UV DISINFECTION SYSTEM
W ATER TREATMENT SERVICES UNIT
CITY OF ANN ARBOR, MICHIGAN
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