MultFallsElectricalUpgradeBidDocumentsErrata-20210505.pdf

5/5/2021 Electrical Upgrade and Standby Generator Errata Page - 1/5

Amendment Two

Electrical Upgrade and Standby Generator Errata

1. DRAWINGS

1.01 DRAWING G0.0

A. Coversheet and sheet title blocks shows “Electrical Upgrade and Standby Generator” There is no standby generator on this project.

1.02 DRAWING C1.1

A. Add Hex note 6 to existing fence showing connecting to storage building. Note Hex 6 is not shown.

B. ---- UGP— North most symbol entering new vault is PUD owned 12KV primary single phase line. The new vault is shown on top of the 12KV primary. The vault needs to be moved east so it is not on top of primary.

C. ---UGP-- Lower symbol from vault shown doing to building is secondary 120/240V service conduits. These conduits will be reconnected to Existing 500 KVA transformer, Automatic transfer switch and main service entrance switchboard SWB1 See Sheet E6.1 1 line diagram for connection details.

D. Add reference to concrete repair detail corrected reference 2/C1.4 E. Add reference to electrical conduit line detail corrected reference 9/C1.5.

1.03 DRAWING C1.2

A. New panel “T” is not labeled and is located to the right of the new main switchboard B. Existing fence for garbage enclosures is light gray, This is not labeled, but remains unchanged.

C. Change Vault reference details from 1/C1.4 t detail 1/C1.3 D. Change Ground Well detail reference from 2/C1.4 to 2/C1.3

1.04 DRAWING C1.3

A. Change Vault Detail from 1/C1.4 to 1/C1.3 B. Change Ground Well detail from 2/C1.4 to 2/C1.3 C. Add note to Ground Well Detail: Extend ground electrode conductor #3/0 CU from new grounding electrode 40 feet and tie to rebar in concrete work above new trench shown on sheet C1.1 from new ATS to new vault to form a Ufer ground. Tie to rebar in new concrete every 10 ft with compression clamps.

1.05 DRAWING C1.4

A. Change detail reference from 3/C1.5 to 3/ C1.4 B. Change detail reference from 1/C1.4 to 1/C1.4 C. Change detail reference from 2/C1.5 to 2/C1.4.

D. Add to concrete repair reference detail 40 ft of 3/0 CU Ufer ground tie to rebar at 10 ft intervals with compression clamp. Connect 3/0 CU to ground electrode in corrected detail 2/C1.4 ground well detail.

1.06 DRAWING C1.5

A. Change details 8, 9, 10, 11 from sheet reference C1.6 to C1.5 in sheet references, all are incorrect references.

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B. Reference electrical conduit line detail, corrected reference number 9/C1.5 from sheet C1.1 key notes 1. New underground conduits are located in this new trench.

C. Corrected detail 9/C1.5 Electrical Conduit Line Detail: Conduits required vary in trench based on location from existing transformer, new connection to automatic transfer switch and reconnection to existing service to building. See 1 line diagram for conduit sizes and conductors Sheet E6.1 New one -Line Diagram.

1.07 DRAWINGS E0.0

A. Add note “V”: All replaced receptacles shall be specification grade, nylon body, back and side wired, see specifications.

1.08 DRAWING E1.1

A. See sheet C1.1 key note 1&2 for conduit route for conduits from new Automatic transfer switch to transformer and from new main switchboard to new vault for splices. Also see sheet E6.1 New One Line Diagram for conduit sizes and conductor sizes for new external service connections.

B. Add reference to wall elevation for new service equipment shown on corrected detail reference corrected detail numbers 1&2/E1.2

C. Add new General note “B” for reference to 1 line diagram 1/E6.1 and sheet E8.2 also to show conduits and conductor sizes and connection in underground vault.

D. Add reference from new vault shown by transformer to corrected vault detail 1/C1.3 E. Hex Note 2. Note says CT are to be re-located in base of transformer. CT’s are currently in base of transformer and will remain in transformer. 1 line drawing sheet E6.1 shows CT’s located underground in main vault. This is not correct. See note below for clarification.

F. Hex Note 2: Change note from utility meter is to be relocated” to Provide a new Stainless steel meter base. Coordinate with PUD for meter base configuration.

1. Cascade Locks PUD will install new contractor furnished meter base on transformer and connect to CT’s in transformer. Contractor will only furnish meter base.

2. Relocated meter base is now shown on building and in detail Corrected sheet 1/E1.2.

Delete this location and move meter base location to transformer.

G. Add reference to trench detail sheet corrected reference 9/C1.5 to show new underground conduits.

H. Add reference to ground electrode well corrected reference 2/C1.3 I. Detail E1.1 Add note to Ground Well Detail: Extend ground electrode conductor #3/0 CU from new grounding electrode in ground electrode well 40 feet and tie to rebar in concrete work above new trench shown on sheet C1.1 from new ATS to new vault to form a Ufer ground. Tie to rebar in new concrete every 10 ft with compression clamps. Also connect this grounding electrode conductor to ground rod located in splice vault.

J. Note Hex 1 for new vault: Vault location as shown is on top of existing primary 12KV PUD line to transformer primary. Move vault east in line with new ATS-1 for new conduit routing so vault is not on top of 12KV primary cables. Coordination with PUD is required for all power interruptions for project.

K. Revised contact for Cascade Locks PUD for primary power and transformer coordination:

1. Josh Dornfeld

2. jdornfeld@cascade-locks.or.us

3. 541-374-8484

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1.09 DRAWINGS E1.2

A. Change both detail references on this sheet from 1&2/E1.3 to 1&2/E1.2 Both references are incorrect.

B. 1/E1.2 corrected reference Add reference to electrical conduit line detail from main switchboard SWB1 and ATS-1 to vault and trench detail corrected reference 9/C1.5. Conduits from SWB1 and ATS-1 both go from these devices to new underground vault shown on sheet 1/E1.1 “in ground Junction Box” Conduit route is not shown on Sheet E1.1.

C. Add reference to new one line diagram for underground conduits to ATS-1 and SWB1 D. Change detail references from 1&2/E1.3 to 1&2/E1.2.

E. Meter base shown will not be used. Proivde new stainless meter base per PUD requirements.

City of cascade locks will install contractor furnished meter base on transformer. Contractor only has to supply meter base

F. Detail 1/ E1.2 Add wall mounted WP bypass switch for two new wall pack lights next to panel “T”

G. Provide an automatic transfer switch ATS-1 that will allow future connections up to 5 - 225A conduits containing conductors connected to the “Generator” side of the transfer switch. These cord sets and cord plug boxes would be mounted on wall adjacent to ATS-1. Future Conduits will connect ATS-1 generator lugs via conduits to external cord plug boxes. Conduits will enter on right side of ATS-1 or bottom as needed in West Elevation of ATS-1. Provide detailed shop drawings of ATS-1 to verify that these connections can be made with the design layout shown on sheet E1.1 & E1.2. These cord sets and plug boxes are not part of this contract. The intent is to provide access in the ATS-1 to connect to these external conduits to allow a portable generator to be connected. No connections are included for a future generator connection in this contract.

1.10 DRAWING E6.1

A. Detail 1/E6.1 Change SWB1 panel from Nema 4X ss to Nema 3R SS (Stainless Steel) enclosure.

B. Detail 1/E6.1 Change ATS-1 transfer switch from Nema 4X SS to Nema 3R SS (Stainless Steel enclosure.

C. Detail 1/E6.1 Panel DP1 add 2 – 225A bus provisions for future breakers and on E7.22 D. Detail 1/E6.1 Change panel DP1 from Nema 4X SS to Nema 3R SS (Stainless Steel) enclosure E. DP-1 is rated as 65,000 AIC. E7.22 shows 42,000 AIC. Provide 65,000 rating.

F. Detail 1/E6.1 Panel DP2 add 2 – 225 A bus provisions for future breakers and on E7.23 G. DP-2 is rated as 65,000 AIC. E7.23 shows 42,000 AIC. Provide 65,000 rating H. Detail 1/E6.1 Change panel DP2 from Nema 4X SS to Nema 3R SS (Stainless Steel) enclosure I. Detail 1/E6.1: CT location underground in vault is incorrect, note 2 sheet E1.1 CT’s are existing and located inside of 500KVA transformer housing. See notes above to provide a new stainless steel meter base for PUD to install.

J. Key Note 3: Revise note to add Ufer ground ring for system ground. Add one additional ground well and ground electrode as shown on detail 2/C1.3. Add minimum of 60 feet of 3/0 CU in concrete for new trench from ATS-1 to existing transformer bonded to rebar in concrete repair corrected detail 2/C1.4. Connect Ufer ground to ground rods shown then to ATS-1 Ground bus and to grounding electrode in new vault.

K. Add Hex note 14 “Provide Nema 4x Stainless Steel Enclosures” to panels “R”, “J”, and “Q” on detail 1/E6.1 new One Line Diagram

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L. Detail 1/E6.1: 400 KW Generator shown as BO14 and feeder (1500) to “ATS-1” is not part of this contract.

M. Detail 1/E6.1: Note for SWB1 says “integral 1500A Automatic Transfer Switch ATS-1”

1. See drawings E1.1, E1.2.

2. The ATS-1 Transfer Switch is a separate enclosure from main switchboard SWB-1, it is not integral to SWB-1.

3. ATS-1 transfer switch has a 1500A main breaker in enclosure A revised specification will be provided.

4. Conduits between ATS-1 and SWB1enclosures are shown on E6.1 1 line diagram only

These are separate enclosures.

N. A future portable 250 KW generator will be installed and will be provided with connections to

ATS-1, There is no requirement to install any provisions for this future generator in this contract other than verify locations in ATS-1 where conduits can enter for emergency power see above for details and provide space for conduit entries into the transfer switch. See notes above for sizes.

O. Detail 1/E6.1 ATS-1 Provide a key interlock switch in ATS-1 to prevent transfer switch from transferring load to generator feed, while generator is being connected.

P. Detail 1/E6.1: All underground conduits shown from ATS-1 and SWB-1; (1500)(1000) to ATS-1, DP-1 and DP-2 are rigid steel conduits.

1.11 DRAWING E7.0

A. General note A: Replace note “A” to read: “Addition of the time delay enclosures and components is indicated by key notes and is part of base bid.”

B. General note B Change reference to sheet E8.2 for time delay relay shutdown details, should refer to sheets E8.0, E8.1, E8.3 only, not E8.2

1.12 DRAWING SHEET E7.22 PANEL DP1

A. Detail 2/E7.22 Change panel enclosure from Nema 4X to Nema 3R SS (Stainless Steel) B. Detail 2/E7.22 Change AIC rating from 42 KAIC to 65 KAIC C. Detail 2/E7.22 New panel DP-1 Add 2 – 225A bus provisions to panel DP-1 D. Remove spare 225A breaker shown, convert to provisions only.

1.13 DRAWING SHEET E7.23 PANEL DP2

A. Detail 2/E7.22 change panel enclosure from Nema 4X to Nema 3R SS (Stainless Steel) B. Detail 2/E7.22 Change AIC rating from 42 KAIC to 65 KAIC C. Detail 2/E7.23 New panel DP-2 Add 2 – 225A bus provisions to panel DP-1.

D. Remove spare 225A breaker, convert to provisions only.

2. SPECIFICATIONS

2.01 01 10 00 SUMMARY

A. 1.10 Work Restrictions, C. Existing Utility Interruptions, 3. Duration for Unavoidable Utility Shutdowns to individual utility services: Not to exceed forty-eight (48) hours. This should read building shutdown should not exceed up to two (2) non-consecutive periods of no more than five (5) days. Shutdowns due to individual panels should not exceed forty-eight (48) hours.

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2.02 26 24 13, SWITCHBOARDS LOW VOLTAGE FEEDERS

A. Detail 1/E6.1 Switchboard SWB1. A specification 26 24 13, switchboards low voltage feeders will be provided dated 5/5/2021. This specification was not included in the current bid documents for the main switchboard SWB1.

2.03 26 36 23A AUTOMATIC TRANSFER SWITCHES – SERVICE RELATED (OVER 300A)

A. Detail 1/E6.1 Automatic Transfer Switch ATS-1. Replace entire 26 36 23A specification with this specification Replacement dated 5/5/2021.

END OF SECTION