W912P519R0001-0005.pdf

W38XDD92311091

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

PROJECT TITLE: Excitation Equipment Replacement Single Aw ard Task Order Contract (SATOC). The purpose of this amendment is to:

1. Publish the f irst set of questions and answ ers (Q&A) and extend the Proposal Due Date until 10:00 am Central Time on Monday 28 September 2020. The f inal set of Q&A w ill be published in a forthcoming amendment.

2. Provide the virtual site visit attendee list and amended technical specif ications as separate attachments to this amendment.

3. Revise the terms (paragraph b) of FAR 52.246-21, Warranty of Construction, and Section 00 21 00 of the solicitation as w ell as 00 10 00 (Task Order: Evaluation Criteria and Aw ard)

4. Incorporate clauses: FAR 52.204-24 (AUG 2020), FAR 52.204-25 (AUG 2020), FAR 52.245-1, FAR 52.245-9, DFARS 252.211-7007, DFARS 252.245-7001, DFARS 252.245-7002 (DEV), DFARS 252.245-7003, DFARS 252.245-7004. Wage determination remains unchanged and is included for informational purposes only.

5. FAR 52.252-3, Alternation in Solicitation, is revised to reflect these changes.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 53

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 17-Aug-2020

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912P519R0001

X 9B. DATED (SEE ITEM 11)

09-Jun-2020

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

17-Aug-2020

CODE

CELRN-RC-N CONTRACTING BRANCH

110 9TH AVE SOUTH, A405

NASHVILLE TN 37203

W912P5 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912P519R0001

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

AMENDMENT 0005 Q&A

Questions and Answers W912P519R0001 LRN Excitation SATOC

Amendment 0005

1. “Regarding the Small Business goal of 25% of contract value, it’s unrealistic as the majority of work can be self-performed by the prime contractor. We highly recommend the government to change to 5% of contract value or 35% of the sub-contracted value.”

Answer: Per Section 00 21 00, paragraph 7.2, Evaluation Criteria, of the solicitation, the Small Business Participation goal is 25% of the contract value. The solicitation is amended to add, “Offerors unable to meet the minimum overall small business goal of 25% shall provide an explanation of why this target cannot be met with their proposal.”

2. “In Section 02 82 13, Asbestos Abatement, Paragraph 1.1 it states that a survey is being conducted and will be provided to the contractor upon completion. Is this survey available?”

Answer: The final Asbestos and LBP Report of Findings can be found under Section 01 95 00 Attachment #7.

3. “In reference the solicitation #W912P519R0001 - Excitation Rehabilitation Single Award Task Order Contract (SATOC) for Nashville District Power Plants, the requested Factor 1 requirements for the Offeror’s past or current construction projects complete or substantially completed (75% or more) within the last six (6) years (from issuance of the solicitation) presents a potential restriction that would eliminate/ put in disadvantage Offeror’s that have proven experience with excitation system modernization with similar scope, complexity and magnitude of this SATOC (e.g. single construction contracts with several units/power plants will not meet this requirement and cannot be used as reference even with one or more units already in operation). We respectfully ask the USACE to review this requirement to “construction projects complete or where the construction is at least 50% complete within the last ten (10) years from issuance of the solicitation”. This will allow USACE Nashville District to receive more offers from qualified vendors with proven past experience replacing exciter systems for hydroelectric power plants to evaluate, supporting the Government best interest selecting the best offer for the Excitation Rehabilitation Single Award Task Order Contract (SATOC) for Nashville District Power Plants project.”

Answer: After considering the request, the Factor I, Performance Confidence remains unchanged.

Pursuant to Section 00 21 00, Paragraph 4.0, Volume I – Factor I – Performance Confidence, to be considered, projects must be complete or substantially completed (75% or more) within six (6) years of the issuance of the solicitation.

4. Solicitation “Page 1, Form 1442, Box 10 It is stated that email and facsmile proposals will not be considered.

This is in contradiction to other information provided in the RFP. Please confirm that proposals shall be submitted by email.”

Answer: The only authorized transmission method for proposals is electronically via SAFE online submission using the following link: https://safe.apps.mil. NO OTHER TRANSMISSION METHODS (EMAIL, FACSIMILE, REGULAR MAIL, HAND CARRIED, ETC.) WILL BE ACCEPTED. Reference

SECTION 00 21 00 INSTRUCTIONS, CONDITIONS & NOTICES TO OFFERORS, Paragraph 6.0

(WHERE TO SUBMIT & SUBMITTAL DEADLINE).

5. Solicitation “Page 5, Price Schedule, CLIN 0014 Refurbish existing collect ring assem..

The scope of the collector ring refurbishment can range from stoning in place at site to removing the collector rings to an off-site machine shop in case the grooving is determined to be more severe. It is difficult to determine this scope without a collector ring inspection being performed. Would the government consider having the awardee price this option after a collector ring inspection has been performed or alternatively, should CLIN 0014 be based on stoning in place (most typical retrofit scope).”

Answer: Offerors should assume that all collector ring refurbishment activity will be done in place.

Reference Section 48 19 26 Paragraph 3.3.7, which states: “Refurbishment work shall be performed in place only, and shall include all work required to correct any runout, pitting damage, or wear, and to clean the helical groove.”

6. Solicitation “Page 11, 2.0 Bonds and Insurance, 2.1 Bid Guarantee Please clarify how the bid security will be submitted considering that the proposal will be emailed.”

Answer: Like proposals, bid guarantees must be submitted electronically via SAFE (https://safe.apps.mil).

Note, in accordance with FAR 28.002 Policy (Deviation 2020-O0016), electronic signatures and electronic, mechanically applied, or printed dates are acceptable on bid guarantees. Similarly, corporate seals and notaries are not required for bid guarantees.

7. Solicitation “Page 15 3 Proposal Information … 3.5 Section C – Section B, Price Proposal Please clarify if ‘Not Rated’ shall be changed to ‘Rated’”

Answer: Price proposals are not rated. Instead, as explained in Section 00 21 00, Paragraph 8.6, “Price proposals will be evaluated by a cost engineer (separate from the SSEB) for fairness, reasonableness, price realism and for material unbalancing through the use of price analysis in accordance with FAR 15.404-1.”

8. Technical Specifications “Page 9 Section 01 00 00 Page 5 Paragraph 3.1 Availability and use of Utilities Please confirm if it is the Contractor’s responsibility to supply temporary facilities for bathrooms, lunch room, drinking water and internet service etc.”

Answer: Reference Amendment 0005. Per revised Specification 01 00 00, Paragraph 3.1.1c, the contractor is responsible for providing potable water for its employees and subcontractors. Per revised Specification 01 00 00, Paragraph 3.1.1.a, the Government will provide guest wifi services, designated restrooms, and an area in the erection bay to serve as lunchroom/break area. Note, however, the contractor will be responsible for furnishing such break area.

9. Technical Specifications “Page 24 Section 01 32 01 Page 4 Paragraph 2.1.1 Government Default Software Based on the defined requirements of the Project Schedule, we understand that MS Project does not meet the requirements and only Primavera P6 fulfils all requirements. Primavera P6 is a very complete scheduling software, but also very time consuming to use vs MS Project, which has been used for government projects in other districts. Please clarify if the defined requirement for the Project Scheduling software will remain.”

Answer: Contactors must comply with Section 01 32 01 Paragraph 2.1.1, which requires use of Primavera P6, Version 8.4.

10. Technical Specifications “Page 67 Section 01 35 26 Page 11 Paragraph 1.6.1.1.1 SSHO Requirements It is stated that the SSHO may not also be the CQC person. It also states that the SSHO person may not be the Site Superintendent. Section 01 45 00 Page 6 also states that the CQC person shall not have any other duties. Previous USACE excitation contracts have required 1 or 2 people to share the CQC/SSHO/Site Superintendent. Please confirm if there shall be three (3) separate people for these functions available at all times while there are ongoing site activities.”

Answer: Reference Amendment 0005. Per revised Specification Section 01 35 26 Paragraph 1.6.1.1.1 and revised Specification Section 01 45 00 Paragraph 3.4.2, provided the SSHO meets the stated qualifications, the SSHO can also serve as the CQC Manager.

11. Technical Specifications “Page 308 Section 03 60 00 Page 8 Paragraph 3.4.8 Concrete Imaging Please confirm if the required concrete imaging peratains to all core drilling as well as for anchor bolts for equipment (Excitation System, PPT, Non-segregated bus steel supports and hangers etc.)”

Answer: Confirmed. Reference Amendment 0005. Revised specification Section 03 60 00 Paragraph

3.4.8. Concrete imaging is required for core drilling as well as anchor bolts for equipment into concrete.

12. Technical Specifications “Page 333 Section 26 05 00 Page 13 Paragraph 2.9 Spare Parts Please clarify if these spare parts relates to equipment other than what is being provided in the Excitation System and PPT, for instance the Control room as there is a specific Spare Parts section in 48 19 26 for the Excitation System and PPT.”

Answer: Correct. This is intended to cover spare parts that are for miscellaneous electrical equipment not included within the excitation system or PPT, or otherwise covered by the spare parts section within 48 19 26.

13. Technical Specifications “Page 373 Section 26 25 00 Page 5 Paragraph 2.1 Non-Segregated Phase Bus Please specify the voltage class (2,000V etc.) of the Non-Segregated phase bus.”

Answer: Reference Amendment 0005. Per revised Specification Section 26 25 00 Paragraph 2.2.1, the Contractor is to properly size the voltage class of the non-segregated phase bus based on their design and submit for approval.

14. Technical Specifications “Page 374 Section 26 25 00 Page 6 Paragraph 2.1.4.3 Housing Please clarify if the enclosure can be either steel or aluminum.”

Answer: Reference Amendment 0005. Per revised Specification Section 26 25 00 Paragraph 2.1.4.3, either material is allowable for the housing. Material selection should be in accordance with bus manufacturer recommendations, as applicable.

15. Technical Specifications “Page 382 Section 48 19 26 Paragraph 1.1.5 Warranty Please clarify if the five (5) year warranty starts after successful commissioning of each unit or if the warranty starts after the commissioning of the last unit.”

Answer: Warranty starts after the successful commissioning of each unit.

16. Technical Specifications “Page 386 Section 48 19 26 Paragraph 1.4.3 Source for Field Flashing Please provide the ampacity rating of the available 480Vac source. We assume that a new 480Vac cable shall be furnished. Please confirm.”

Answer: Confirmed. Contractors should assume that a new 480Vac cable shall be furnished. The 480Vac breaker should be a 100Aac frame with a 70Aac trip.

17. Technical Specifications “Page 386 Section 48 19 26 Paragraph 1.4.4 Potential and Current Transformers We understand that there is only one (1) Current Transformer available for the new Excitation System. Some manufacturers may require three (3) Current Transformers for the Excitation System to function as per the specifications. Please confirm that the cost to procure and to install additional Current Transformers is the responsibility of the Contractor.”

Answer: Correct. If more than one (1) current transformer is required, the contractor is responsible for the cost of procuring and installing such additional equipment.

18. Technical Specifications “Page 388 Section 48 19 26 Paragraph 2.4.1 Power Potential Transformers Please confirm if the 110kV BIL level will be maintained. For some other USACE exciter projects, the BIL level has been reduced to 95kV BIL for the PPT and fuse cabinet in order to reduce the size of the equipment.”

Answer: Confirmed. The 110kV BIL level is to be maintained.

19. Technical Specifications “Page 389 Section 48 19 26 Paragraph 2.5.1 Excitation System Requirements The specification mention a ceiling current for 10 seconds and then also that it shall be able to supply 150% rated excitation for 30 seconds. Please clarify if the short-term overload current (ceiling current) shall be for 30 seconds or 10 seconds. Also, we assume that the ceiling current factor of 150% shall apply on the 1,100 Acd filed current rating. Please confirm.”

Answer: Reference Amendment 0005. Revised Specification 48 19 26 Paragraph 2.5.1 clarifies this requirement. Specifically, the short term overload current is for 30 seconds, and is clarified to be 1,650 Adc (the continuous current requirement is 1,100 Adc).

20. Technical Specifications “Page 389 Section 48 19 26 Paragraph 2.5.1.1 System Characteristics The specification requires +375Vdc and -350Vdc at 75% source voltage. Hence, +500Vdc and -467Vdc at 100% source voltage. The negative ceiling voltage is normally around 85% of the positive ceiling voltage, while the specification specifies a negative ceiling voltage that is 93% compared to the positive ceiling voltages. Please confirm if the negative ceiling voltage shall remain as is, in which case the positive ceiling voltage needs to increase since the specified ratio is not compatible with min and max firing angle of a six pulse rectifier bridge.”

Answer: Reference Amendment 0005. Revised Specification 48 19 26 paragraph 2.5.1.1 clarifies this requirement. The no-load positive ceiling voltage is required to be +375Vdc with a 75% source voltage.

Negative field forcing requirement is as stated in the amended language: “Full negative field forcing, with allowance for thyristor firing margins as approved

21. Technical Specifications “Page 391 Section 48 19 26 Paragraph 2.5.2 Bus The specification stipulates that all connections shall be silver-plated. Does this mean that not only the outgoing AC and DC stubs shall be silver plated, but also all internal bus-to-bus connections as well as any cable lugs attaching to an AC or DC bus, such as, cables for field ground, field flashing, fan transformer, ac filter, bridge synch transformer etc. Would fully tin-plated copper bus be acceptable in lieu of silver plated connections?”

Answer: Silver plated connections are required for continuously conducting connections (such as AC and DC main connections) but not for auxiliary connections (such as “field ground, field flashing, fan transformer, ac filter, bridge synch transformer etc.”). Fully tin-plated copper bus will not be allowed as an alternative. Either silver-plated connections as described, or completely silver plated copper bus, shall be supplied.

22. Technical Specifications “Page 394 Section 48 19 26 Paragraph 2.5.9.2 Rectifier Assembly Cooling We understand that each six-pulse rectifier bridge shall have it’s own redundant set of fans, completely separate from the other six-pulse rectifier bridge. Please confirm.”

Answer: Confirmed. Each bridge shall have its own set of redundant fans, separate from the other bridge.

23. Technical Specifications “Page 397 Section 48 19 26 Paragraph 2.5.17 Reversible bus links Please confirm if the reversible bus links also should have silver plated connections.”

Answer: Confirmed. Reversible bus links shall also have silver-plated connections.

24. Technical Specifications “Page 397 Section 48 19 26 Paragraph 2.6.1 Please confirm if each of the redundant control channels shall be able to operate with either thyristor bridge. In the case this is not required, a failure in the control channel would also make the dedicated bridge inoperable. In a bridge independent system, a failure in one control channel will not reduce the bridge redundancy as the redundant control channel will still be able to operate any of the thyristor bridges.”

Answer: No preference or requirement in the specifications is stated. Any features which an Offeror would like to have considered for more favorable evaluation may be clearly defined in their proposal for “Factor 2

– Technical Design”.

25. Technical Specifications “Page 399 Section 48 19 26 Paragraph 2.6.6.3 Should thyristor bridges also be switched when a transfer occurs from the active control channel to the stand-by control channel? Or alternatively, should the same thyristor bridge keep operating during a control channel transfer and there should be a separate control to switch from the active thyristor bridge to the inactive thyristor bridge? Should control channel and thyristor bridge selection be accessible from the HMI an/or Modbus interface ?”

Answer: No preference or requirement in the specifications is stated. Contractor best-practices or recommendations may be offered for such decisions, for Government consideration. Any features or control approaches which an Offeror would like to have considered for more favorable evaluation may be clearly defined in their proposal for “Factor 2 – Technical Design.”

26. Technical Specifications “Page 405 Section 48 19 26 Paragraph 2.7.10 Please confirm that each Excitation System shall have a dedicated Ethernet cable to the control room and that a “daisy chained unit-to-unit approach is not permitted” as a unit outage would affect the communication of other units.”

Answer: Confirmed. Reference Amendment 0005. Revised Specification 48 19 26 Paragraph 2.7.7 clarifies the connection from each exciter to the control room must be dedicated.

27. Technical Specifications “Page 407 Section 48 19 26 Paragraph 2.11 Please provide part number information on the existing brushes and holders. Also, please provide estimated number of brushes/holders for the uprated generator.”

Answer: Currently, there are 20 brushes per slip ring. However, per Paragraph 2.11, the Contractor is responsible for determining the number of brushes to be installed based upon the required ampacity and the brush type recommended by the Contractor.

28. Technical Specifications “Page 415 Section 48 19 26 Paragraph 3.3.3.4 Would it be possible to provide a photo of the exciter/PPT location showing the intended footprint in order to see how much of the architectural floor finish that needs to be restored after the existing equipment have been removed. Does the plant have matching tiles for use by the contractor or is aware of it the tiles are readily available?”

Answer: Reference Amendment 0005, which adds PowerPoint slides and video presentation from the virtual site visit. Matching tiles are not available for use by the contractor.

Note: A password protected pdf of the PowerPoint slides was sent via email to all registered and approved attendees at the virtual site visit. A link was sent to those same email addresses with directions on how to view the secure video on YouTube. To view the video, you must create a YouTube account using the email address that received the link.

Note: If you did not register for the virtual site visit and would like to view these items, complete one of the Site Visit Request Forms attached to Notice ID W912P519R0001 Excitation Rehabilitation Single Award Task Order Contract (SATOC) for Nashville District Power Plants in Beta.sam.gov and email the completed form to Rob Holdsworth at Robert.B.Holdsworth@usace.army.mil to be vetted through security and sent the links. Please note security approval of foreign nationals may take up to 2 weeks.

29. Technical Specifications “Page 425 Section 48 70 01 Paragraph 1.4.3 Please confirm if MOD-027-1 (Governor testing) should be part of this excitation contract.”

Answer: Reference Amendment 0005. Revised Specification Section 48 70 01 Paragraph 1.4. removes the MOD-27-1 requirement.

30. Contract Drawings “Page 31 E-101 Non-seg DC bus routing Can more dimensions be provided for E-101 to indicate the estimated length of the DC bus duct on top of the generator floor plates as well as the bus extending from the top of the generator to the new exciter location. Also, a side view of the bus duct run from the generator to the Excitation System with dimensions would be preferable. Could a picture also be provided showing the existing Excitation System, Amplidyne, Rheostat and Actuator cabinet etc.”

Answer: See the Government’s Response to Question No. 28. An overview of the intended routing and the equipment arrangement was provided in the PowerPoint presentation and video from the virtual site visit. Also, refer to reference drawings Q16-79/110.2, Q16-79/110.2, and Q16-79/110.2 to estimate the length of DC bus duct required.

31. Contract Drawings “Page 33 E-401 Unit Control Board Please indicate the intended location for the remote HMI panel and if there is sufficient space for mounting an Ethernet switch and 24Vdc power supply in the back of the cabinet.”

Answer: Contractors should assume sufficient space for mounting an Ethernet switch and 24Vdc power supply will be available. The location of the remote HMI panel will be coordinated with the Government pending determination of the size and the Contractor’s preference based on auxiliary equipment.

32. “Section 01 45 00 Paragraph 3.4.2 requires an onsite CQC System Manger who is a graduate electrical engineer with a minimum of 10 years installation experience on construction of power generation/electrical system similar to this Contract. It goes on further to say exceptions to the graduate engineer requirement “may” be reviewed by the Government.

This particular project is a straight forward exciter removal/installation. Most individuals that superintend or provide quality control on these exciter retrofits are not graduate engineers, rather trade individuals that have construction experience.

The startup, commissioning and modeling is completed by a specialist who is knowledgeable in regards to the particular equipment being installed. The QC System manager would rely on this specialist for proper functionality of the equipment.

We request that the paragraph be modified to add ...”or a construction individual with 10 years’ experience installing electrical systems similar to this contract.”

Answer: In accordance with Specification Section 01 45 00 Paragraph 3.4.2, the CQC System Manager must be a graduate electrical engineer with a minimum of 10 years installation experience in construction of power generation/electrical systems similar to this Contract.

33. “Section 01 45 00 Paragraph 3.4.3 requires a graduate civil engineer (with structural track or focus) with 2 years’ experience supervising structural features of work in the field with a construction company to perform specialized quality control duties. The only structural item on this project is the installation of seismic anchors. This is a common task performed on electrical system replacement projects of which a QC System manager with construction experience is qualified to oversee. We request that this requirement be removed.”

Answer: Reference Amendment 0005. Specification Section 01 45 00 Paragraph 3.4.3 was revised to remove the requirement to provide a graduate civil engineer.

34. “Section 01 45 00 Paragraph 3.4.3 requires a graduate environmental engineer with 3 years’ experience to perform specialized quality control duties. The only environmental hazards on this project are asbestos and lead.

An abatement company supervisor with abatement experience would have more than enough experience to oversee quality control for this scope of work. We request the requirement to be changed to “Abatement Supervisor with 5 years’ experience.”

Answer: Reference Amendment 0005. Specification Section 01 45 00 Paragraph 3.4.3 was revised to require an Abatement Supervisor with five (5) years of experience instead of a graduate environmental engineer.

35. “Could the PowerPoint and videos presented during this site visit be made available for download?”

Answer: A password protected pdf of the PowerPoint slides was sent to the email addresses that registered and were approved by security for the virtual site visit on 1 July 2020. A link was sent to those same email addresses with directions on how to view the secure video on YouTube. A YouTube account must be created using the email address that the link is sent to in order to view the video. If you did not register for the virtual site visit and would like to view these items, complete one of the Site Visit Request Forms attached to Notice ID W912P519R0001 Excitation Rehabilitation Single Award Task Order Contract (SATOC) for Nashville District Power Plants in Beta.sam.gov and email the completed form to Rob Holdsworth at Robert.B.Holdsworth@usace.army.mil to be vetted through security and sent the links.

Please note security approval of foreign nationals may take up to 2 weeks.

36. “Would you please provide a list of the participants to the Virtual Site meeting?”

Answer: Reference Amendment 0005, which includes the attendee list for the virtual site visit as an attachment.

37. “May we request and 2 weeks extension to submit questions?”

Answer: Reference Amendment 0004. The question due date was extended to 24 July 2020.

38. “Original due date was August 14. Per slide 5 proposals are now due on September 2, 2020. Will that date be confirmed in an amendment?”

Answer: Reference Amendment 0004. The proposal due date was extended to 2 September 2020. With Amendment 0005 the due date is now extended to 28 September 2020.

39. “We are asking for a 2 week extension of the question period. This will allow for a thorough review of all documents.”

Answer: See the Government’s Response to Question No. 37.

40. “Can the virtual power point presentation made available to the registered participants?”

Answer: See the Government’s Response to Question No. 28.

41. Technical Specifications “Page 6 Section 01 00 00 Page 2 Paragraph 1.2.2 Access to Site. Please confirm that there are no black-out dates where on-site work cannot be performed and also if only one unit at the time can be taken out of service.”

Answer: Reference Amendment 0005. Specification Section 01 00 00 Paragraph 1.4 Unit Outages and Sequence of Installation was revised. A unit outage must be coordinated and approved by the Contracting Officer 14 calendar days in advance. Unit outages should last no more than 60 days. Only one unit outage is allowed at a time. The outage unit must have all testing completed and be accepted by the Government before an outage is granted for another unit. The unit installation sequence will be as follows: Unit 3, Unit 2, Unit 1.

42. Technical Specifications “Page 68 Section 01 35 26 Page 12 Paragraph 1.6.1.4 Crane Operators/Riggers. Please clarify if the contractor is required to provide a certified crane operator for the overhead crane or if the overhead crane will be supplied by USACE at no cost to the contractor. Please clarify if the contractor is responsible for rigging equipment and for providing riggers with the appropriate certification. Please also confirm if the contractor is responsible for all documentation related to use of overhead crane, such as, lifting plan, certificates for Operator/Rigger etc.”

Answer: Reference Specification Section 01 35 26 Paragraph 1.6.1.4. The contractor must provide Operators, Signal Persons, and Riggers meeting the requirements in EM 385-1-1, Section 15.B for Riggers and Section 16.B for Crane Operators and Signal Persons. Contractors must provide proof of current qualification. The overhead crane can be used; however, the contractor must supply rigger, operator, and rigging equipment. The contractor is also required to have a lifting plan, and provide documents for any and all crane inspections.

43. “We kindly ask the Government to extend the questions due date to 3 August 2020 at 1:00 PM Central Time (30 days prior bid due date informed during Pre-Proposal meeting held on July 1st, 2020).”

Answer: See the Government’s Response to Question No. 37.

44. “Please inform the expected outage period per unit and if there is any special outage requirement.”

Answer: See the Government’s Response to Question No. 41.

45. “Please confirm that the Power House Crane has access to all existing equipment that needs to be removed.”

Answer: Confirmed. The overhead crane has access to all existing equipment to be removed.

46. Part / Clause: 01 00 00, 1.2.2 “Please confirm if during the outage period the Contractor is allowed to work 6 days a week and 10 hrs per day and if double shifts per day will be allowed?”

Answer: Reference Amendment 0005. Specification Section 01 00 00 Paragraph 1.3 Contractor’s Working Hours was revised. The Contractor's working hours shall be the same as the project staff.

Proposed changes to Contractor working hours which extend past 5:00 p.m. weekdays, on Friday, on weekends, and Federal holidays or which are different from Government working hours must coordinated and approved by the Contracting Officer 30 calendar days in advance. This includes working six (10) hour days per week. No double shift will be allowed. Differing working hours are not guaranteed or warranted by the Government.

47. Part / Clause: 01 95 00 Asbestos and LBP, Report of Findings “Please confirm the understanding that no sample of analyzed meet the definition of LPB, therefore no LBP abatement activity is expected in the scope of work.”

Answer: Government has no confirmed samples reporting actionable LBP levels. Contractor is responsible for performing sampling as required.

48. Part / Clause: 48 19 26, 2.6.7 “Specification 48 19 26 section 2.6.7 defines that Reactive Compensation will not be required. However, during the Pre-Proposal Meeting presentation, Reactive Drop Compensation was required in the Control Features of the Excitation System (slide 25). Please confirm if the feature will or will not be required.”

Answer: Reactive differential compensation is not required. Line Drop Compensation (which is commonly implemented in the same fashion as reactive droop compensation) is required. The slides were unclear by stating this requirement as reactive droop compensation, when really the same functionality in line drop compensation is desired. The technical specifications (Section 48 19 26 Paragraph 2.6.8) take precedence here.

49. Part / Clause: 01 35 70, 1.3.19 “The CCNA Security certification (one of the approved baseline certification required in the DoD 8570.01-M) has been retired by CISCO and no new ones will be granted and no existing one will be extended. Instead, the new CCNA covers the security topics. Please confirm if the new CCNA certification will be accepted for the contractor personnel assigned to cybersecurity.”

Answer: The new CCNA certification will not be accepted for the contractor personnel assigned to cybersecurity. The DoD 8570.01-M will be updated to reflect the new baseline requirements.

50. Part / Clause: 26 25 00, 2.1.4.3 “Please confirm if the housing of the non-segregated bus duct can be made of aluminum or if it has to be made of steel.”

Answer: Reference the Government Response to Question No. 14.

51. Part / Clause: 48 19 26, 2.4.1 “Please confirm if a cast coil type Power Potential Transformer (PPT) is acceptable.”

Answer: Reference Amendment 0005. Specification Section 48 19 26 Paragraph 2.4.1 was revised to require contractors to provide VPI type PPT. Cast coil type PPT is not acceptable.

52. Part / Clause: 48 19 26, 2.4.1 “Please confirm if Aluminum will be accepted as winding material for the Power Potential Transformer (PPT).”

Answer: Reference Amendment 0005. Specification Section 48 19 26 Paragraph 2.4.1 was revised to require copper winding material. Aluminum winding material is not acceptable.

53. “The Specification - in Section 48 19 26, Paragraph 2.4.1 – describes protective relaying CTs as “For each unit, three suitable relaying accuracy current transformers (CTs) shall be installed on the PPT secondary.,” but the project plan schematics in sheets E-600, E-611, E-612, E-613, E-660 show these CTs on the primary leads of the PPTs.

Which configuration is being specified?”

Answer: Reference Amendment 0005. Drawing (E-600, E-611, E-612, E-613, and E-660) was modified to show the CTs installed on the PPT secondary

54. “Based on the "Buy American Requirement" notice and by request of inapplicability determination, how much of the construction materials content would need to originate in the US to avoid disqualification? (if applicable).”

Answer: Offerors seeking to submit a request for determination of inapplicability must comply with the requirements of FAR 52.225-12(b). Additionally, please reference FAR 52.225-11, which provides, in part, that "construction material manufactured in the United States...whose cost of components mined, produced, or manufactured in the United States exceeds 50 percent of the cost of all of its components" may be considered "domestic construction material." Please reference FAR 52.225-12 for additional information on the requirements of the Buy American Act.

55. Part / Clause: 52.211-12(a) “We respectfully ask Government to include the following underlined text in the Liquidated Damages clause:

For the Prototype Project, the amount is $4,368.65 per calendar day of delay until the work is completed or accepted, not to exceed 20% of the contract price including amendments.”

Answer: Per FAR 52.211-12 LIQUIDATED DAMAGES--CONSTRUCTION (SEP 2000), the liquidated damage amount is $4,368.65 per calendar day of delay until the work is completed or accepted for the Prototype Project.

56. Part / Clause: General “Please confirm if there are any preparations at the external parking lot for electrical power to feed the contractor’s office trailers.”

Answer: Contractor office trailer electrical power will be determined after award upon evaluation of site.

The external parking lot has 480 volts, 3 phase, 15 amps available.

57. Part / Clause: General “Please confirm if there are hookups (connections points) for internet access point at the intended locations for the contractor’s office trailers.”

Answer: Internet access will be provided via a guest wi-fi.

58. Part / Clause: General “Please inform the actual clearance between the back doors of the existing exciter cubicles and the wall.”

Answer: The clearance between the back doors of the existing exciter cubicles and the wall is 40 inches.

59. Part / Clause: General “Please inform the dimensions of the terrazzo floor squares.”

Answer: The dimensions of the terrazzo floor squares are 36" x 36", although some are 33" x 36.” For additional information, reference revised Drawing No. Q16-79/110.2.

60. Part / Clause: General “Please inform if the terrazzo floor was installed as squares or poured at site.”

Answer: The terrazzo floor was poured in squares.

61. Part / Clause: General “Please inform any available information regarding the terrazzo floor: original manufacturer, type, name, color, etc.”

Answer: Reference Amendment 0005. Drawings for the terrazzo floor have been added to revised Drawing No. Q16-79/110.2.

62. Part / Clause: 01 00 00, 1.7.1 “Please confirm the need of the Project Signs requested 15 days after issuance of NTP in Section 01 00 00, page 3, Paragraph 1.7.1 Project Signs – General. Those type of signs is usually installed close to the site mobilization date.

e.g.: Only the submittal review period of 30 days already make this 15 days (design and supply and assembly the sign) unfeasible.”

Answer: Reference Amendment 0005. Specification Section 01 00 00 Paragraph 1.7.1 was revised to require signage to be installed upon site mobilization.

63. Part / Clause: General 1.3 Submittals “Please inform if Government will consider to review some of the required submittals due date requirements. There are some conflicts and inconsistences with some due dates and other requirements (e.g.: Seismic Restrains calculation within 90 days of NTP. This is the same due date for the exciter cubicles design. The way it is now, we need to send the Seismic Restrain calculation using not approved design. Our suggestion would be to prepare the seismic calculations using the approve design drawings).”

Answer: The referenced Submittal dates are not in conflict. Specifically, the exciter "Outline Drawings" (for exciter cubicles) is due within 60 days of NTP, whereas the seismic restraint details are due within 90 days of NTP.

64.

Section 4.0 Volume I Factor I Performance Confidence Section/subsection title 4.1 Submission Requirements

Question: “Solicitation states "Projects shall be summarized in tabular form using the table format given at the end of this section." There is no table format provided. Should we supply the information in our own table format?”

Answer: Reference Amendment 0005. That sentence was deleted from Section 00 21 00, Paragraph 4.1.

65.

Section SECTION 00 21 00 PROCEDURES FOR SUBMITTAL OF OFFERS AND PROPOSAL EVALUATION

APPROACH

Section/subsection title 2. Proposal Evaluation Process and Question: "In the Procedures For Submittal Of Offers And Proposal Evaluation Approach under 2.2.3 Price Evaluation: The SSEB, Cost Engineering, and Contracting Officer/Source Selection Authority (SSA) will evaluate price proposals independent of the technical evaluation. The SSEB will not have access to price information until completion of the technical evaluation." However, Volume I – Factor IV – Small Business Participation Plan pg. 22 of 76 "(b) Submit the total combined dollar value and percentage of work to be performed by both large and small businesses ..."

Answer: The Small Business Participation Plan will be evaluated by the Small Business Chief independently from the technical evaluation. Thus, the SSEB will not have access to price information until after the technical evaluation.

66. “Will the Corps be distributing a list of attendees?"

Answer: See the Government’s Response to Question No. 36.

67. “Will the Corps be distributing a copy of the PowerPoint presentation presented at the site visit?”

Answer: See the Government’s Response to Question No. 28.

68.

Section 48 19 26 Section/subsection title 2.10.1 Question: "Please provide photos of photo of the brush rigging and brushes"

Answer: Answer: See the Government’s Response to Question No. 28. The brush rigging and brushes are visible in the PowerPoint presentation and video from the virtual site visit.

69. Section 48 19 26 Section/subsection title 2.10.1

Question: "Please provide the number of brushes per ring"

Answer: Reference the Government’s Response to Question No. 27.

70. Section 48 19 26 Section/subsection title 2.10.1

Question: "Please provide the type, style of brush – rigging"

Answer: See the Government’s Response to Question No. 28. The brush rigging and brushes are visible in the PowerPoint presentation and video from the virtual site visit. The existing commutator brush rigging is a free to slide, trailing edge, constant force spring pressure and semi-captive spring type.

71. Section 48 70 01 Section/subsection title 1.3 Question: "Please provide the Governor MVA base, Type, Make and Model / Photo of governor nameplate"

Answer: See photo labeled “Governor nameplate” attached to Amendment 005

72. Section 48 70 01 Section/subsection title 1.3 Question: "Please provide the Baldwin-Lima-Hamilton Kaplan Turbine make and model. Please provide a photo of the nameplate"

Answer: The Baldwin-Lima-Hamilton Kaplan turbine is an adjustable blade propeller type with 58,200 HP for nameplate. See photos labeled Generator nameplate and Exciter nameplate attached to Amendment 005.

73. Section 48 70 01 Section/subsection title 1.4.3 Question: "Confirm MOD-027-1 testing should be completed as no turbine or governor work is completed under this project"

Answer: See the Government’s Response to Question No. 29.

74. Section W912P519R0001 Section/subsection title STANDARD FORM 1442 Question: "Please provide anticipated award date and NTP date"

Answer: The Government anticipates a 1st Quarter FY21 award and 2nd Quarter FY21 NTP for the prototype project.

75. Section 48 19 26 Section/subsection title 2.6.13 Question: "Confirm Voltage Matching voltage will be measured from the existing Gen Sync PTs. New PTs for this requirement will not be required or supplied"

Answer: Confirmed. No new PTs are required for this functionality. Anticipated wiring to connect this measurement for each excitation system has been provided in the solicitation contract drawing set, specifically on drawings E-701, E-711, and E-721.

76. Section 26 25 00 Section/subsection title 2.2 Question: "Please provide photos of the non-segregated bus and surrounding areas where the proposed tap will be located."

Answer: See the Government’s Response to Question No. 28. The non-segregated bus and surrounding areas are visible in the PowerPoint presentation and video from the virtual site visit.

77. Section 26 25 00 Section/subsection title 2.2 Question: "Please provide manufacture, type, ampacity, BIL rating for the existing bus"

Answer: The generator bus is of the nonsegregated phase type rated at 13.8 kV with continuous current carrying capacity of 2000 A and a momentary current rating of 40,000 rms amps. BIL rating for the generator breaker is 95 kV.

78. Section 48 19 26 Section/subsection title 3.3.5.3 Question: "Please provide pictures of the existing BATT board, INSTR board, BENCH board, relay panel and control room area"

Answer: See the Government’s Response to Question No. 28. The existing BATT board, INSTR board, BENCH board, relay panel and control room area are visible in the PowerPoint presentation and video from the virtual site visit.

79. "Please clarify bid due date. Solicitation Form 1442 shows 08/14/2020, presentation provided during virtual bid walk stated 09/02/2020."

Answer: See the Government’s Response to Question No. 38.

80. "Are there defined outage seasons for the units/plant? Are there any restrictions on unit outages during any time of the year?"

81. "Is there a particular order desired for upgrade of the units?"

82. "Are there restrictions on having more than one unit down at a time?"

(End of Summary of Changes)

SECTION 00 10 00 - SOLICITATION

The required response date/time has changed from 02-Sep-2020 10:00 AM to 28-Sep-2020 10:00 AM.

The following have been modified:

BASIC CONTRACT SCOPE OF WORK

This is an Indefinite Delivery Indefinite Quantity (IDIQ), Single Award Task Order Contract (SATOC) for the removal of the existing excitation equipment and replacement of Solid State Excitation equipment/systems in support of the U.S. Army Corps of Engineers, Nashville District (LRN) hydropower mission.

The SATOC will be utilized by LRN for demolition, fabrication or installation of low-, medium- or high-voltage electrical controls and equipment in hydropower generating facilities throughout the Cumberland River System in Tennessee and Kentucky. The equipment may consist of electrical controls, digital turbine governors, medium-voltage cables, breakers, exciters, transformers and similar equipment used in the production and distribution of power generated at Cumberland River facilities. The potential exists for the contractor to encounter asbestos or lead-based paint in connection with the work, and remediation of affected components will be required as part of the scope of work. This description is not intended to be all encompassing and is subject to change.

The basic contract will be awarded and administered (e.g. issuing modifications, etc.) by the Nashville Contracting Division, 110 Ninth Avenue South, Nashville, TN 37203-3817. Basic contract data for the IDIQ-SATOC contract is as follows:

• The Government intends to award one (1) IDIQ-SATOC contract.

• This procurement is Full & Open.

• Period of contract shall not exceed four (4) year base period and three (3) two (2) year option periods for a total of ten (10) years.

• The minimum guaranteed contract amount is $25,000 for the base period. There is no guaranteed minimum for the option periods.

• The total combined contract capacity under this SATOC contract is $30,000,000 over the ten (10) year period.

• A bid guarantee is only required for the Prototype Project in accordance with FAR 52.228-1. Payment and performance bonds shall be submitted for each individual task order within ten (10) calendar days following task order award.

• Liquidated damages amounts will be provided in this solicitation for the Prototype Project and with each individual task order.

• Wage Determinations will be provided in this solicitation for the Prototype Project and with each individual task order

Task Order: Evaluation Criteria and Award:

The Prototype Project will be awarded as a task order against the SATOC. If selected for award of the SATOC, the Offeror's proposed price for the Prototype Project will be binding for the task order awarding the Prototype Project. Award of that task order is anticipated within 90 days of the proposal due date. See Section 00 21 00 for additional information on the Prototype Project.

Future Projects: Future requirements will be procured by issuance of firm fixed-price task orders against the SATOC. Each task order will be initiated by the issuance of a Request for Proposal (RFP) to the SATOC-holder and will include, among other information: the statement of work, opportunity for a site visit, technical plans and specifications, period of performance, liquidated damages, and wage determinations.

SECTION 00 21 00 - INSTRUCTIONS

The following have been modified:

INSTRUCTIONS TO OFFERORS

SECTION 00 21 00

INSTRUCTIONS, CONDITIONS & NOTICES TO OFFERORS

1.0 GENERAL REQUIREMENTS

1.1 Intent

The intent of this solicitation is to issue a SATOC for the removal of the existing excitation equipment and replacement with a new, fully static, digital excitation system at up to eight (8) of the U.S. Army Corps of Engineers

(USACE), Nashville District’s (LRN) hydropower generation plants on the Cumberland River. If all options are exercised, the requirement will cover a 10-year period (a base of four (4) years and three (3) 2-year options) or when the overall contract capacity has been met, whichever comes first. One (1) Indefinite Delivery Indefinite Quantity (IDIQ) construction contract will be awarded.

1.2 Project Description

The SATOC can be utilized by LRN for the demolition, design, fabrication, supply and/or installation of new exciters in hydropower generating facilities throughout the Cumberland River System in Tennessee and Kentucky.

The potential exists for the contractor to encounter asbestos or lead-based paint in connection with the work, and remediation of affected components will be required as part of the scope of work. This description is not intended to be all encompassing and is subject to change. The prototype project, Cordell Hull Power Plant Excitation System Upgrade is located in Carthage, Tennessee.