RFBI_4.pdf

RESDMSTR: REV. 6.3.2021 Appendix 00 21 00.1 Project Number: 000000000013292

REQUEST FOR BIDDING INTERPRETATION (RFBI)

(Email no later than November 1, 2024, 5:00 p.m.)

PMDB RFBI No.: _______________ Requestor RFBI No.: ___________ Request Date:

To: Jose Enriquez, Project Director From (Bidder):

Project Management and Development Branch Real Estate Services Division Phone: 916-597-8847 Contact: __________________________

Phone: ___________________________ Fax: _____________________________

Email: jose.enriquez@dgs.ca.gov Email: ___________________________

All RFBIs received prior to deadline identified above, and responses from the State will be published on http://www.caleprocure.ca.gov. Click on “Start Search.” In the event name field, enter the project number and click search. While viewing the Event Details, click on “View Event Package” to view RFBI responses.

Project No.: 000000000013292 Project Name: Central Utility Plant Interconnect DSH - Metropolitan Location: Metropolitan State Hospital in Norwalk, CA

Drawing Reference: ____________________ Project Manual Reference: ___________________________

Question:

Bidder’s Authorized Signature: ______________________________________________________ [ ] Check here if additional pages attached Page 1 of ____

1) Please clarify the scope of SCE demolition required to be performed by the contractor.

T1.0 indicates to “demolish the existing 66kv outdoor substation including all ancillaries and the 12kv switchgear inside the co-generation plant”.

Drawing E1.1 indicates the 66/12 kv to be demolished by Southern California Edison (SCE) but refers to E4.0, detail 6, which indicates ‘Contractor's Responsibility to Dispose of all equipment upon approval of the SCE’ but also indicates “66kv substation to be demolished by Southern California Edison (SCE)”.

Please to clarify exactly what will SCE remove and what does the contractor need dispose of.

Will SCE remove transformers, breakers, switches, control cabinets, batteries, power & control cables, steel structures, fence, rock, substructures and foundations at the substation as well as all work required to remove 66kv pole line?

Is the contractor required to dispose of the above SCE items? If so, then additional information is required including details of items to be disposed of by contractor.

E4.0 -Detail 6 states “contractor shall secure from SCE dissolution of easement”. The contractor has no control over this as it is between the State and SCE.

2) Demolition inside the cogeneration plant.

Is any demolition inside the plant required to be performed by the contractor other than removal of and disposal of the following:

3750kva transformer ‘TRA’ with transformer pad, 12kv switchgear along with associated battery and charger.

MV wiring as shown on E3.0 between the 12kV switchgear and the transformer and generators?

If control wing is to be removed by the contractor, then please provide cable schedule with a listing of wiring to be removed by the contractor.

Please provide a detail of the existing transformers pad – how deep is it?

R. Kaufman 818-772-9496 rkaufman@mironelectric.com

X

11/01/2024 Miron Electric see below n/a mailto:name@dgs.ca.gov Ron Pencil

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3) Will the MV wiring between the SCE substation and the 12kv switchgear be removed by SCE or the contractor?

4) Is disposal of any hazardous waste required?

Transformer ‘TRA’ indicates ‘Non-PCB’ , certified less than 50ppm per 40CFR which is the Federal limit. The limit for California is substantially lower. Is all equipment certified to be free of any contamination.

5) Is there any other oil filled equipment or other hazardous waste to be removed by the contractor.

6) Temporary power will be required for cutovers to the new service.

What is the current maximum demand load for the 4.16kv MCC-A?

What is the current maximum demand load for the existing 4.16kv distribution switchgear?

7) The scale indicated on drawings T4.0, E1.1 and E1.3 “1”=150’” does not appear to be correct when compared to drawing E1.2.. Please confirm or correct?

8) There is a temporary boiler on the roadway which will interfere with the location shown for the new duct bank shown on E1.3. Can this duct bank be relocated to the South to avoid this temporary boiler and any impact upon boiler?

9) Are there any fees from SCE that the contractor needs to include the the bid?

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JoEnriqu Text Box Responded By: Project Director I/DGS-RESD-PMDB

JoEnriqu Text Box Response:

JoEnriqu Text Box Title:

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JoEnriqu Text Box Response date: November 07, 2024

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JoEnriqu Text Box Signature:

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JoEnriqu Text Box See attached JCCA 's response letter dated November 08, 2024 (#23793-5) and Structural As-Built Drawing (120-D06) to this RFBI. See scope changes in Addendum #1.

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RESDMSTR: REV. 6.3.2021

JoEnriqu Text Box Appendix 00 21 00.1

JoEnriqu Text Box Project Number: 000000000013292

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November 08, 2024 JCCA No. 23793-5 DGS No. 000000000013292

RFBI#4 Response:

1. Refer to Addendum #1 for descoping of 66kV Substation.

2. That’s correct, the 3,750kVA Transformer “A, 12kV Switchgear and associated battery and battery charger are the equipment to be demolished. The Generators will remain place. That’s correct, MV cable between the 12kV Switchgear and Transformer “A” and Generators will be demolished.

There is no available record for control conductors between Switchgears and field equipment.

See attached structural as-built 120-D06 for the depth of Transformer “A” pad.

3. The MV cable will be removed by the Contractor.

4. There is no record of equipment that are contaminated or free of contamination.

Provide a line-item cost for disposal of hazardous waste.

5. An oil filled circuit breaker manufactured in 1957 stored in the old switchgear to be demolish should be disposed.

6. There is no record of power consumption of MCC-A. However, the spare circuit breaker of the new electrical service can be used as temporary power supply as an option for temporary power.

The maximum demand of 4.16kV Switchgears is 1,814kW at 73% power factor in September, 2022.

7. Refer to Addendum #1.

8. Yes, it can be relocated to avoid the temporary boiler.

9. No, any added cost for SCE will be paid by DGS.

Very truly yours, J.C. CHANG & ASSOCIATES, INC.

Hector Lacsa, PE Electrical Engineer

Attachments:

1. 120-D06 Structural Drawing As-built