RFQ Amendment 0003.pdf

W81EWF11542321

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

The amendment provides additional industry questions and the government's answ ers to the questions. See summary of changes for details.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 09-Aug-2021

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 W913E521Q0022

X 9B. DATED (SEE ITEM 11)

22-Jul-2021

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 is extended, X 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 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

09-Aug-2021

CODE

ERDC CONTRACTING OFFICE

HANOVER OFFICE

72 LYME ROAD

HANOVER NH 03755-1290

W913E5 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W913E521Q0022

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION J - LIST OF DOCUMENTS, EXHIBITS AND OTHER ATTACHMENTS

The following have been modified:

QUESTIONS AND ANSWERS

Question 1: Can we can use a substitute refrigerant other than Ammonia?

Answer: The Government specified ammonia in the interests of complying with DOD objectives of environmentally friendly facilities. If it is not possible to use ammonia to meet the required performance specifications, the vendor may propose equipment with a different refrigerant, however, the greenhouse gas/global warming factor of the alternate refrigerant should be selected to be as low as possible.

Question 2: The spec call for a set point range of -10F to 35F. Please advise if a system design that can get to

0F but not below is acceptable.

Answer: -10F is binding.

Question 3: The specs call for 3 tons @ 35°F fluid Supply to 1.5 Tons @ -10°F Fluid supply. The smallest we can do is 20.5 tons @ 35°F fluid supply / 7.5 tons @ -10°F Fluid Supply. I do not think there is a low GWP refrigerant that will satisfy both the high and low end temperatures in conjunction with an air cooled condenser specified for 100°F Ambient. I also think CO2 would not work due to the operating temperature range. The high end is in the trans-critical range and the low end is in the sub-critical range. Please advise.

Answer: It’s not necessary for the performance rating to be obtained with only a single compressor and refrigerant loop. If it is necessary to supply two compressors (one of the rated 3 tons at 35F and one of the rated 1.5 tons at -10F) which can cool the glycol across the range of temperatures, the vendor should quote a system with two refrigeration loops.

(End of Summary of Changes)