B599-- 666 | Air Balance Service 36C25926Q0114

Please see attached documents for solicitation instructions and attachments.

5. PROJECT NUMBER (if applicable) CODE 7. ADMINISTERED BY 2. AMENDMENT/MODIFICATION NUMBER CODE 6. ISSUED BY 8. NAME AND ADDRESS OF CONTRACTOR 4. REQUISITION/PURCHASE REQ. NUMBER 3. EFFECTIVE DATE 9A. AMENDMENT OF SOLICITATION NUMBER 9B. DATED PAGE OF PAGES 10A. MODIFICATION OF CONTRACT/ORDER NUMBER 10B. DATED BPA NO. 1. CONTRACT ID CODE FACILITY CODE CODE Offers 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: The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers E. IMPORTANT: is extended, (a) By completing Items 8 and 15, and returning __________ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or electronic communication 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 is not extended. 12. ACCOUNTING AND APPROPRIATION DATA (REV. 11/2016) is required to sign this document and return ___________ copies to the issuing office. is not, 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. 15C. DATE SIGNED B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b). 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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified. C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF: D. OTHER Contractor 16C. DATE SIGNED 14. DESCRIPTION OF AMENDMENT/MODIFICATION 16B. UNITED STATES OF AMERICA 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 16A. NAME AND TITLE OF CONTRACTING OFFICER 15B. CONTRACTOR/OFFEROR STANDARD FORM 30 PREVIOUS EDITION NOT USABLE Prescribed by GSA - FAR (48 CFR) 53.243 (Type or print) (Type or print) (Organized by UCF section headings, including solicitation/contract subject matter where feasible.) (Number, street, county, State and ZIP Code) (If other than Item 6) (Specify type of modification and authority) (such as changes in paying office, appropriation date, etc.) (If required) (SEE ITEM 11) (SEE ITEM 13) (X) CHECK ONE 13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14. 11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT (Signature of person authorized to sign) (Signature of Contracting Officer) 1 1 0001 12-18-2025 None 36C259 Department of Veterans Affairs Network Contracting Office NCO 19 6162 South Willow Drive, Suite 300 Greenwood Village CO 80111 36C259 Department of Veterans Affairs Network Contracting Office NCO 19 6162 South Willow Drive, Suite 300 Greenwood Village CO 80111 To all Offerors/Bidders 36C25926Q0114 X X X X 1 The purpose of this amendment is to revise Block 8 on the 1449. Offer due date/local time is changed to 01-02-2026 1:00 PM MST.

5. PROJECT NUMBER (if applicable) CODE 7. ADMINISTERED BY 2. AMENDMENT/MODIFICATION NUMBER CODE 6. ISSUED BY 8. NAME AND ADDRESS OF CONTRACTOR 4. REQUISITION/PURCHASE REQ. NUMBER 3. EFFECTIVE DATE 9A. AMENDMENT OF SOLICITATION NUMBER 9B. DATED PAGE OF PAGES 10A. MODIFICATION OF CONTRACT/ORDER NUMBER 10B. DATED BPA NO. 1. CONTRACT ID CODE FACILITY CODE CODE Offers 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: The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers E. IMPORTANT: is extended, (a) By completing Items 8 and 15, and returning __________ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or electronic communication 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 is not extended. 12. ACCOUNTING AND APPROPRIATION DATA (REV. 11/2016) is required to sign this document and return ___________ copies to the issuing office. is not, 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. 15C. DATE SIGNED B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b). 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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified. C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF: D. OTHER Contractor 16C. DATE SIGNED 14. DESCRIPTION OF AMENDMENT/MODIFICATION 16B. UNITED STATES OF AMERICA 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 16A. NAME AND TITLE OF CONTRACTING OFFICER 15B. CONTRACTOR/OFFEROR STANDARD FORM 30 PREVIOUS EDITION NOT USABLE Prescribed by GSA - FAR (48 CFR) 53.243 (Type or print) (Type or print) (Organized by UCF section headings, including solicitation/contract subject matter where feasible.) (Number, street, county, State and ZIP Code) (If other than Item 6) (Specify type of modification and authority) (such as changes in paying office, appropriation date, etc.) (If required) (SEE ITEM 11) (SEE ITEM 13) (X) CHECK ONE 13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14. 11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT (Signature of person authorized to sign) (Signature of Contracting Officer) 1 5 0002 12-23-2025 None 36C259 Department of Veterans Affairs Network Contracting Office NCO 19 6162 South Willow Drive, Suite 300 Greenwood Village CO 80111 36C259 Department of Veterans Affairs Network Contracting Office NCO 19 6162 South Willow Drive, Suite 300 Greenwood Village CO 80111 To all Offerors/Bidders 36C25926Q0114 X X X X 1 The purpose of this modification is to post answers in response to questions received.

5. PROJECT NUMBER (if applicable) CODE 7. ADMINISTERED BY 2. AMENDMENT/MODIFICATION NUMBER CODE 6. ISSUED BY 8. NAME AND ADDRESS OF CONTRACTOR 4. REQUISITION/PURCHASE REQ. NUMBER 3. EFFECTIVE DATE 9A. AMENDMENT OF SOLICITATION NUMBER 9B. DATED PAGE OF PAGES 10A. MODIFICATION OF CONTRACT/ORDER NUMBER 10B. DATED BPA NO. 1. CONTRACT ID CODE FACILITY CODE CODE Offers 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: The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers E. IMPORTANT: is extended, (a) By completing Items 8 and 15, and returning __________ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or electronic communication 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 is not extended. 12. ACCOUNTING AND APPROPRIATION DATA (REV. 11/2016) is required to sign this document and return ___________ copies to the issuing office. is not, 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. 15C. DATE SIGNED B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b). 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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified. C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF: D. OTHER Contractor 16C. DATE SIGNED 14. DESCRIPTION OF AMENDMENT/MODIFICATION 16B. UNITED STATES OF AMERICA 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 16A. NAME AND TITLE OF CONTRACTING OFFICER 15B. CONTRACTOR/OFFEROR STANDARD FORM 30 PREVIOUS EDITION NOT USABLE Prescribed by GSA - FAR (48 CFR) 53.243 (Type or print) (Type or print) (Organized by UCF section headings, including solicitation/contract subject matter where feasible.) (Number, street, county, State and ZIP Code) (If other than Item 6) (Specify type of modification and authority) (such as changes in paying office, appropriation date, etc.) (If required) (SEE ITEM 11) (SEE ITEM 13) (X) CHECK ONE 13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS, IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14. 11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT (Signature of person authorized to sign) (Signature of Contracting Officer) 1 2 0003 12-31-2025 None 36C259 Department of Veterans Affairs Network Contracting Office NCO 19 6162 South Willow Drive, Suite 300 Greenwood Village CO 80111 36C259 Department of Veterans Affairs Network Contracting Office NCO 19 6162 South Willow Drive, Suite 300 Greenwood Village CO 80111 To all Offerors/Bidders 36C25926Q0114 X X X ** HOUR & DATE for Receipt of Offers is EXTENDED to: 01-07-2026 1:00PM MST X 1 The purpose of this modification is to post answers to additional questions received and extend the due date of quotes. Questions and answers are attached for review. The due date is extended to Wednesday, January 7, 2026 at 1:00PM MST. Page 2 of 2 Questions & Answers 36C25926Q0114 Part 2 The solicitation states: "For the purpose of this contract, the Sheridan VAMC requires that the Contractor supply one (1) NEBB and USP 797 certified inspector to provide air flow measurement and testing services." My question is if a USP 797 certification is required to perform this work. Our firm does not have the USP797 certification as we have not found it necessary in the past. Our firm is NEBB certified and fully capable of performing the air changes and pressurization analyses without the USP 797 certification. Government Response: USP 797 is not required for the listed locations. NEBB is the only requirement for this contract. has performed test & balancing in many VA hospitals and this requirement seems very excessive, could you clarify? Government Response: The monthly service is normal for this type of service. Also, it was stated biannual testing but annual billing. Is that correct? If monthly service is required, couldn t we bill monthly? Government Response: Historically, the price schedule line item has been annual for invoicing/billing for services as stated in the Performance Work Statement but alternate could be considered.