Oden Addendum 1 (1).pdf

Department of Natural Resources Oden Fish Hatchery Discharge UV Sterilization File No 751/17288.TAP, Index No. 83520 FTCH Project Number 180977

ADDENDUM

Z:\2018\180977\WORK\SPECS\ADD1\ODEN ADDENDUM 1.DOCX

Addendum No. 1

Date: December 20, 2018

OWNER: Michigan Department of Technology, Management and Budget State Facilities Administration Design and Construction Division 3111 W. St. Joseph Street Lansing, Michigan 48917

ENGINEER: Fishbeck, Thompson, Carr & Huber, Inc.

DRAWING REVISION NO.: None

ISSUED HEREWITH:

SPECIFICATION SECTIONS: None

SKETCHES: None

SHEETS: None

ATTACHMENTS: Existing Isolation Building Drawings (14 Sheets), Prebid Meeting Attendance Sheet

BIDS DUE: January 2, 2019 at 2:00 pm.

This Addendum is issued to all Bid Set Holders, is a part of the Contract Documents, and modifies the previously issued Bidding Documents. Acknowledge receipt of this Addendum in the space provided on the Bid form; failure to do so may result in rejection of the Bid.

ITEM NO. 1:

Prebid Meeting

1. A prebid meeting was held on Monday, December 10, 2018 at the Oden Fish Hatchery. A copy of the attendee list is included an attachment to this addendum.

2. Attendees requested a copy of the original construction drawings for the Isolation Building. Those drawings are included as an attachment to this addendum.

3. The following comments were made during the meeting and site walk:

a. The Contractor can use the north side of the Isolation Building for equipment and material staging and storage.

b. The Owner will unlock the Isolation Building at the start of the work day and will lock the building at the end of the work day.

c. Exposed conduit will not be painted.

d. The Owner will modify the water supply header so that the discharge connections for water feeding the isolation tanks will be moved from the bottom of the pipe to the horizontal centerline of the pipe.

This will not impact the contract work.

e. Control panel CP-PUMP must be UL listed.

f. Being substantially complete with a functional system by May 1, 2019 is a critical date. Once bids are received and a recommendation is approved, the Owner will move promptly to execute the contract and Engineer will work with the Contractor to expedite review and approval of equipment and materials.

4. Documents have been submitted for plan review. The Plan Review number is PR2018BCC-002606. Trade contactors are responsible for obtaining construction permits.

ITEM NO 2:

Section 40 05 23 – Process Valves

1. Paragraph 2.2: Add the following subparagraph:

A. PVC Butterfly Valves (Valves 15 and 16):

1. Furnish PVC body, wafer style butterfly valves.

2. PVC material to be Type I Cell Classification 12454.

3. Bubble-tight shut-off.

4. Valve seat material to be Buna-N or EPDM.

5. 316 stainless steel stem.

6. Pressure rated 150 psi at 73 degrees F.

7. Manual Valve Actuator:

a. Cast aluminum gear operator with position indicator.

b. Include chainwheel operator kit with chain extending to 3 feet above the operating floor.

8. Acceptable Manufacturers:

a. Spears.

b. Hayward.

c. Nibco.

d. Asahi.

e. Or equal.

2. Paragraph 3.4.A: Revise the descriptions for valves 15 and 16 as follows:

a. Valve Tag: 15; Size: 4”; Type: Butterfly-Isolation; Operator: Geared Chainwheel.

b. Valve Tag: 16; Size: 4”; Type: Butterfly-Isolation; Operator: Geared Chainwheel.

ITEM NO. 3:

Section 46 61 63 – Bag Filters

1. Paragraph 2.1.B.3: Correct the Design Base Type 1 filter bag model number from “BMAXPONG25PWE“ to

“BMAXPONG252PWE”.

ITEM NO. 4:

Section 46 66 13 - Closed-Vessel, Low-Pressure Ultraviolet Treatment Equipment

1. Paragraph 1.3.A: Add Item 5. The design basis UV transmittance is 90%.

2. Paragraph 2.1.A: Change the design base unit model number from “CLP6061108B21” to “SLP6091412A22”.

3. Paragraph 2.1.C.3: Delete the requirement for the pressure vessel to be NSF-50 certified.

4. Paragraph 2.1.D.9: The specified UV unit is available only for 230 VAC single supply voltage. Delete the reference to 120 VAC supply voltage.

5. Paragraph 2.1.D.4: Delete the requirement for the integrated wiping system. The manufacturer of the design base unit has indicated this option is not available on the specified unit.

ITEM NO. 5:

Section 40 90 00 – Instrumentation and Control for Process Systems

1. Paragraph 2.3.C.1.m: revise the pressure switch model number from “2W3A” to “1XSWHL”.

ITEM NO. 6:

Sheet P-2 – Isolation Building Plan, Sections and Details

1. Isolation Building Section 1: Replace the callout “Ball Valve with Chainwheel Actuator” to “Butterfly Valve with Chainwheel Actuator”.

2. Isolation Building Section 1: Add the callout “Butterfly Valve with Chainwheel Actuator” to valve 15 which is located on the bypass piping for UV-2.

ITEM NO. 7:

Response to Bidder Questions:

1. Question: Should we assume that soil being excavated for the new wet well structure will be contaminated due to the proximity to the existing septic tank? Or should we price this based on the assumption that the soil will be acceptable for re-use on the site during backfill, be able to be removed from the site without any additional contamination requirements, and the contingency allowance will cover any contamination costs we might run into?

Response: The buried tank near the proposed wet well structure is a wastewater holding tank with no outlet.

Bidders should assume that there is no contaminated soil in the area of any excavation and that any excess excavated material can be used as backfill or removed from the site as clean fill. The contract documents identify procedures to address contaminated soil if it is suspected or confirmed.

2. Question: It calls out for (2) 6” mechanical joint gate valves on drawing P-2; could you clarify what type of valve you’re looking for here ductile or PVC?

Response: The two buried valves are numbered 17 and 18 and are ductile iron as specified in Section 40 05 23, paragraph 2.2.A.

3. Question: Could you please clarify what type of (new) 6” piping is to be installed?

Response: New buried pipe is 6-inch Schedule 80 PVC as specified in Section 40 05 13 – Process Piping Systems.

4. Question: What material/type of piping is currently existing underground that we will need to tie into?

Response: The exact specification for the buried piping is unknown. Bidders should assume that the pipe is Schedule 40 PVC DVW. Contractor shall verify pipe type and material and consult with the Engineer on how to proceed if pipe material differs from the assumed material.

5. Question: On drawing P-2 it calls out for (2) 4” ball valves with chainwheel actuators; could you please clarify a manufacturer for these? Our suppliers are unaware of ball valves with chainwheel actuators.

Response: Valves 15 and 16 are located too high to be operable from the floor and require chainwheel operators. Via this addendum the valve type for these two valves is changed from PVC ball valves to PVC butterfly valves with a geared chainwheel operator. Refer to Item No. 2 and Item No. 6 in this addendum.

6. Question: Please identify a model number for the required Yaskawa VFD’s (appears to be embedded software – model: “iQpump” listed in specs does not yield results on Yaskawa’s website).

Response: The specified VFD model is the Yaskawa iQPump Model 1000. Fuller Supply Company (Phillip Bednarek, 616-364-8455) is one local stocking distributor for the Yaskawa VFDs.

7. Question: Are the Yaskawa VFDs to act as standalone controllers that will communicate with the CP-PUMP panel or are the VFD’s to be included in a duplex controller panel that will tie to CP-PUMP? (original Homa pump package was delivered with a standalone panel, not sure if necessary if the VFD’s can act as standalone controllers (duplex logic)).

Response: The Yaskawa VFDs are networked together and have integral duplex pump control logic. The VFD supplier is required in the specifications to configure the VFDs to provide the specified functional intent.

CP-PUMP is intended to be an interface panel to provide selector switches, indicating lights and panel indicators. Refer to the wiring diagram on Sheet E-3 and the riser diagram on Sheet E-4. The VFDs are shown on the contract drawings to be mounted separate from the control panel for three primary purposes:

to allow easy access to the VFDs without needing to de-energize or open the system control panel, to avoid possible issues with heat build-up inside the control panel, and to facilitate quicker delivery of the components.

8. Question: Specs indicate the thermal/seal fail relays are to be mounted in the CP-PUMP panel, is the CP- PUMP panel to be designed as the main controller or should these be located in the VFD panel(s) (see previous question regarding a standalone pump panel with VFD’s)

Response: The VFDs are stand alone and are not mounted in a separate enclosure. The thermal/seal relays should be mounted in CP-PUMP.

END OF ADDENDUM

ODEN

STATE FISH HATCHERY

Michigan Department of

Natural Resources

Fisheries Division

STATE OF MICHIGAN

DEPARTMENT OF MANAGEMENT AND BUDGET

Office of Design

UPGRADE AND RENOVATION PROJECT - PHASE 2& Construction

Oden

State Fish Hatchery

LOCATION MAP

COVER SHEET AND LOCATION MAP

G-1

Upgrade and Renovation Project

Phase 2

FILE #751/99420.JDM

INDEX #53061

ISOLATION BUILDING - FLOOR PLAN/RESTROOM PLAN

A4.1

ODEN

STATE FISH HATCHERY

STATE OF MICHIGAN

DEPARTMENT OF MANAGEMENT AND BUDGET

Office of Design

UPGRADE AND RENOVATION PROJECT - PHASE 2& Construction

ISOLATION BUILDING - ELEVATIONS AND SECTION

A4.2

ODEN

STATE FISH HATCHERY

STATE OF MICHIGAN

DEPARTMENT OF MANAGEMENT AND BUDGET

ISOLATION BUILDING - WALL SECTIONS

A4.3

ODEN

STATE FISH HATCHERY

STATE OF MICHIGAN

DEPARTMENT OF MANAGEMENT AND BUDGET

ISOLATION BUILDING - FOUNDATION/SLAB PLAN

S4.1

ISOLATION BLDG. - SCHEMATIC ROOF FRAMING PLAN

S4.2

S4.3

ISOLATION BUILDING - FOUNDATION DETAILS

ISOLATION BUILDING BELOW FLOOR PIPING PLAN

P-4.1

ODEN

STATE FISH HATCHERY

STATE OF MICHIGAN

DEPARTMENT OF MANAGEMENT AND BUDGET

ISOLATION BUILDING ABOVE FLOOR PIPING PLAN

P-4.2

ISOLATION BUILDING PIPING DETAILS

P-4.3

ODEN

STATE FISH HATCHERY

STATE OF MICHIGAN

DEPARTMENT OF MANAGEMENT AND BUDGET

Office of Design

UPGRADE AND RENOVATION PROJECT - PHASE 2& Construction

ISOLATION BUILDING - SITE PLAN

E-4.1

E-4.2

ISOLATION BUILDING - ELECTRICAL