2026 07 06__Amendment 00003 80MSFC26R0002 Amendment 00002 to Amendment 00003 Appendix C Change Log.pdf

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Final RFP Engineering Services and Science Capability Augmentation (ESSCA) II
Solicitation number
80MSFC26R0002
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About this file

This document is an Appendix C summarizing significant changes made to the 80MSFC26R0002 solicitation between Amendment 00002 (posted February 27, 2026) and Amendment 00003 (posted July 6, 2026).

The amendment reflects updates to projected ESSCA II usage and the acquisition schedule. Key changes include: updated contract performance periods with Phase-In Period from January 18 to May 17, 2027; Base Ordering Period from May 18, 2027 to May 17, 2032; Optional Ordering Period from May 18, 2032 to May 17, 2035; and an Optional Ordering Period authorized by FAR 52.217-8 from May 18, 2035 to November 17, 2035. The Base Ordering Period Maximum Value increased to $1,829,200,000. Multiple Contract Line Item Numbers (CLINs) were added for Firm-Fixed-Price (FFP) skills augmentation orders and renumbered (CLINs 0003 through 0023). Cost-type task orders now include CPAF, CPFF, and FFP options, with corresponding CLIN restructuring for MSFC/SSC and Other Centers support. The contract includes options to transition CPAF skills augmentation support to CPFF upon sustained excellent performance. Administrative changes include updated point of contact information, revised proposal submission due dates to August 6, 2026, updated benchmark escalation rates, modified monetary wage-fringe benefits ranges, addition of FAR 52.222-90 addressing DEI discrimination by federal contractors (April 2026 deviation), and updates to various technical requirements, reporting procedures, and system specifications throughout the Performance Work Statement and supporting attachments.

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2026 07 23__Amendment 00004 80MSFC26R0002 SF30 and Continuation.pdf PDF
2026 07 23__Amendment 00004 80MSFC26R0002 Amendment 00003 to Amendment 00004 Appendix C Change Log.pdf PDF
2026 07 06__Amendment 00004 80MSFC26R0002 Attachment L-1 Excel Pricing Model.xlsx XLSX spreadsheet
2026 07 23__Amendment 00004 80MSFC26R0002 Cover Letter with Appendix A.pdf PDF
2026 07 23__Amendment 00004 80MSFC26R0002 Sections J-M.docx DOCX document
2026 07 06__Amendment 00003 80MSFC26R0002 Cover Letter with Appendix A_B.pdf PDF
2026 07 06__Amendment 00003 80MSFC26R0002 ESSCA II RFP Sections A-I.pdf PDF
2026 07 06__Amendment 00003 80MSFC26R0002 Sections J-M Rev 1.docx DOCX document
80MSFC26R0002 ESSCA II RFP Amendment 00001 to Amendment 00003 Clause Provision Change Matrix.pdf PDF
2026 07 06__Amendment 00003 80MSFC26R0002 Attachment L-1 Excel Pricing Model.xlsx XLSX spreadsheet
2026 07 06__Amendment 00003 80MSFC26R0002 SF30 and Continuation.pdf PDF
2026 02 27__Amendment 00002 80MSFC26R0002 Sections J-M.docx DOCX document
2026 02 27_Amendment 00002 80MSFC26R0002 SF30.pdf PDF
80MSFC26R0002 ESSCA II RFP to Amendment 00001 Clause and Provision Change Matrix.pdf PDF
2026 02 27__80MSFC26R0002 Amendment 00002 ESSCA II Attachment L-1 Excel Pricing Model.xlsx XLSX spreadsheet
2026 02 23_Amendment 00001 80MSFC26R0002 SF30_.pdf PDF
2026 02 23__Amendment 00001 80MSFC26R0002 Final RFP to Amendment 00001 Appendix D Change Log.pdf PDF
2026 02 23__Amendment 00001 80MSFC26R0002 Sections J-M.docx DOCX document
2026 02 23__Amendment 00001 80MSFC26R0002 Appendix C RFP Questions and Responses.pdf PDF
2026 02 23__Amendment 00001 80MSFC26R0002 ESSCA II RFP Sections A-I.pdf PDF
2026 02 09 80MSFC26R0002 ESSCA II Draft RFP to Final RFP Clause and Provision Change Matrix.pdf PDF
2026 01 30 80MSFC26R0002 ESSCA II RFP Sections A-I.pdf PDF
2026 01 30 80MSFC26R0002 ESSCA II Attachment L-1 Excel Pricing Model.xlsx XLSX spreadsheet
2026 01 30 80MSFC26R0002 ESSCA II Final Cover Letter and Sections J-M.docx DOCX document
2026 01 30 80MSFC26R0002 Appendix A DRFP Questions and Responses.pdf PDF
2026 01 30 80MSFC26R0002 Attachment J-12-A Installation Accountable Property List.xlsx XLSX spreadsheet
2026 01 30 80MSFC26R0002 Appendix B DRFP to RFP Change Log.pdf PDF
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12 B 11-12 MSFC 52.216-

(c) Skills Augmentation Support:

The contractor's work will be controlled by means of task orders (TOs) for skills augmentation support.

Specifically, the Government may award cost-plus-award-fee (CPAF) task orders to perform (1) MSFC and SSC CPAF Skills Augmentation support - CLINS 0002 and 0008, and (2) Other Centers Skills Augmentation support - CLINS 0005 and 0011.

The contract includes an option to transition the skills augmentation support requirements to cost-plus-fixed-fee (CPFF) in the event of consistent, highly excellent, contractor performance. See Section H special contract requirements. The Government may award CPFF TOs to perform (1) MSFC and SSC Skills Augmentation support - CLINS 0006, and 0012; and (2) Other Centers Skills Augmentation support

- CLINS 0007, and 0013. MSFC and SSC Skills Augmentation Support (CLINS 0002, 0008) will be governed via TOs issued and tracked via the ATOMS Suite and funded at the contract CLIN level. Other Centers Skills Augmentation support

(c) Skills Augmentation Support: The contractor's work will be controlled by means of task orders (TOs) for skills augmentation support.

Specifically, the Government may award cost-plus-award-fee (CPAF) task orders to perform (1) MSFC and SSC CPAF Skills Augmentation support - CLINS 0002, 0010, and 0018; and (2) Other Centers CPAF Skills Augmentation support - CLINS 0006, 0014, and 0020.

The contract includes an option to transition CPAF skills augmentation support requirements to cost-plus-fixed-fee (CPFF) in the event of consistent, highly excellent, contractor performance.

See Section H special contract requirements. The Government may award CPFF TOs to perform (1) MSFC and SSC Skills Augmentation support - CLINS 0008, 0016, and 0022; and (2) Other Centers Skills Augmentation support - CLINS 0009, 0017, and 0023.

All cost-type MSFC and SSC Skills Augmentation Support will be governed via TOs issued and tracked via the ATOMS Suite and funded at the contract CLIN level. Other Centers Skills Augmentation support will be governed via TOs issued and tracked through both the NASA Contract Management System (NCMS) and the ATOMS Suite and

24 I 65-66 52.222-90 N/A 52.222-90 Addressing DEI Discrimination by Federal Contractors.

APR 2026 (DEVIATION)

(a) Definitions. As used in this clause—

Program participation means membership or participation in, or access or admission to: training, mentoring, or leadership development programs;

educational opportunities; clubs;

associations; or similar opportunities that are sponsored or established by the contractor or subcontractor.

Racially discriminatory diversity, equity, and inclusion (DEI) activities means disparate treatment based on race or ethnicity in the recruitment, employment (e.g., hiring, promotions), contracting (e.g., vendor agreements), program participation, or allocation or deployment of an entity's resources.

(b) In connection with the performance of work under this contract, the Contractor agrees as follows:

(1) The Contractor will not engage in any racially discriminatory DEI activities;

(2) The Contractor will furnish all information and reports, including providing access to books, records, and accounts, as required by the Contracting Officer, for purposes of ascertaining compliance with this clause;

(3) In the event of the Contractor's or a subcontractor's noncompliance with this clause, this contract may be canceled, terminated, or suspended in whole or in part, and the Contractor or subcontractor may be declared ineligible for further Government contracts;

(4) The Contractor will report any subcontractor's known or reasonably knowable conduct that may violate this clause to the Contracting Officer and take any appropriate remedial actions directed by the Contracting Officer; and

(5) The Contractor will inform the Contracting Officer if a subcontractor sues the Contractor and the suit puts at issue, in any way, the validity of this clause.

31 J-1 J-1-18 3.3.2 3.3.2 Provide technical skills necessary to develop requirements, design, code, and tests of ground software, including real-time simulation and modeling of launch vehicles*, simulation of space systems and subsystems, hardware-in-the-loop simulation, test automation software, and all-digital simulations. The Contractor must provide technical skills necessary to develop tools to support the development, test, analysis, and operations of software systems, including skills in cloud computing technologies to support the development and operations of these tools. The Contractor must provide technical skills related to hardware and hardware/software integration engineering and for ground test systems to support the real-time modeling and simulation design, development, integration, test, and evaluation of real-time hardware-in-the-loop facilities. The Contractor must provide services and engineering products such as:

system integration of lab automation tools and displays, avionics and avionics software models; cable interconnect diagrams; cable harness drawings; grounding

3.3.2 Provide technical skills necessary

to develop requirements, design, code, and tests of ground software, including real-time simulation and modeling of launch vehicles, simulation of space systems and subsystems, hardware-in-the-loop simulation, test automation software, and all-digital simulations. The Contractor must provide technical skills necessary to develop tools to support the development, test, analysis, and operations of software systems, including skills in cloud computing technologies to support the development and operations of these tools. The Contractor must provide technical skills related to hardware and hardware/software integration engineering and for ground test systems to support the real-time modeling and simulation design, development, integration, test, and evaluation of real-time hardware-in-the-loop facilities. The Contractor must provide services and engineering products such as: system integration of lab automation tools and displays, avionics and avionics software models;

cable interconnect diagrams; cable harness drawings; grounding diagrams/analysis; avionics emulators and associated breakout boxes for both data and power; integrated engineering analysis for voltage drop and grounding

52 J-8 J-8-3 Introductory text

TOs will be placed via the ATOMS Suite to capture skills augmentation support. All mention of TOs includes the TO subtasks, and all TOs will have a minimum of one subtask. The TOs range from general technical discipline support for an organization to specific product-oriented tasks. These TOs require the Contractor to coordinate with the MSFC or other Center Departments, Laboratories, and Offices that exercise responsibility for the tasks and subtasks. The dynamic nature of the work required demands significant flexibility in the allocation of engineering, science, and technical resources.

DOs will be placed via the ATOMS Suite to capture end-item delivery requirements. DOs will have only one subtask which is necessary to accommodate funds tracking. Types of end item deliverables may include but are not limited to: concepts of operations; trade studies;

requirements definition; conceptual, preliminary, and final designs;

analyses; fabricated, manufactured, and assembled integrated hardware;

software code; training; and operating manuals.

TOs will be placed via the ATOMS Suite to capture skills augmentation support and can be CPAF, CPFF or FFP. TOs will have a minimum of one subtask.

TOs range from general technical discipline support for an organization to specific product-oriented tasks. These TOs require the Contractor to coordinate with the MSFC or other Center Departments, Laboratories, and Offices that exercise responsibility for the tasks and subtasks. The dynamic nature of the work required demands significant flexibility in the allocation of engineering, science, and technical resources.

DOs will be placed via the ATOMS Suite to capture end-item delivery requirements and can be CPFF or FFP.

DOs will have only one subtask which is necessary to accommodate funds tracking. Types of end item deliverables may include but are not limited to:

concepts of operations; trade studies;

requirements definition; conceptual, preliminary, and final designs; analyses;

fabricated, manufactured, and assembled integrated hardware; software code;

training; and operating manuals.

78 L L-10 – L-11

ELECTRONIC

SUBMISSION

OF

PROPOSALS

– PROPOSAL

MARKING

AND

DELIVERY

THROUGH

NASA’S EFSS

BOX, (b) and (f)

(b) Prior to the submission of proposal files, Offerors interested in submitting a proposal in response to this solicitation should notify Sadie Moulton of their intent to submit a proposal at least 48 hours prior to the intended submission date, at the following email address:

sadie.m.moulton@nasa.gov. The Offeror shall courtesy copy (cc) Erin Richardson at erin.h.richardson@nasa.gov on this communication. Offerors, especially those that have not previously submitted a proposal utilizing NASA’s EFSS Box, should coordinate the submission of a test file with Sadie Moulton no less than 5 days in advance of the proposal due date specified in the solicitation to allow time to work through any submission issues.

(f) Immediately after all files have been uploaded and the proposal has been submitted in its entirety, the Offeror is requested to notify Sadie Moulton at the following email address: sadie.m.moulton@nasa.gov with a listing of all documents by filename that were submitted via EFSS Box. The Offeror should courtesy copy (cc) Erin Richardson

Prior to the submission of proposal files, Offerors interested in submitting a proposal in response to this solicitation should notify Casey Hardy of their intent to submit a proposal at least 48 hours prior to the intended submission date, at the following email address:

casey.h.hardy@nasa.gov. The Offeror shall courtesy copy (cc) Erin Richardson at erin.h.richardson@nasa.gov on this communication. Offerors, especially those that have not previously submitted a proposal utilizing NASA’s EFSS Box, should coordinate the submission of a test file with Casey Hardy no less than 5 days in advance of the proposal due date specified in the solicitation to allow time to work through any submission issues.

(f) Immediately after all files have been uploaded and the proposal has been submitted in its entirety, the Offeror is requested to notify Casey Hardy at the following email address:

casey.h.hardy@nasa.gov with a listing of all documents by filename that were submitted via EFSS Box. The Offeror should courtesy copy (cc) Erin Richardson at erin.h.richardson@nasa.gov on this communication. If any problems are experienced with the EFSS Box system (e.g., login, file transfer), please contact

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