47PB0018R0007_Amendment_0002_Moakley_Cooling_Towers_2018_06_18.pdf

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:

(a) By completing items 8 and 15, and returning 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 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.

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

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

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

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

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

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, 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)

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.

15C. DATE SIGNED

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

16C. DATE SIGNED

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

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

1PQB

David Mark, Contract Specialist

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

Solicitation # 47PB0018R0005" is amended as follows:

1. Question #15 under Amendment 0001 is answered on the following pages.

2. All other terms and conditions of the solicitation remain unchanged.

3. Offerors are reminded that they must acknowledge receipt of this amendment by one of the methods outlined in Block 11.

1PQB

Acquisition Management Division (1PQ) Contract Operations Branch (1PQB) GSA/PBS10 CAUSEWAY ST., RM 1100

BOSTON, MA 02222-1077 USA

EQ1PC-18-0011

47PB0018R0007

1 6

06/18/2018

05/25/2018

DAVID MARK Digitally signed by DAVID MARK Date: 2018.06.18 16:03:42 -04'00'

6/18/2018

15. Please provide the existing CT and chiller plant sequences of operations?

ANSWER: Moakley starts with one chiller. When one chiller hits 90% for 15 minutes a second chiller comes on. It remains that way until both chillers drop to 40%, and then the lag chiller turns off.

The towers start with one fan on low, then the fan will go to high, then a second fan starts on low, then the second fan goes to high.

A more detailed description of basic HVAC operations and sequencing is attached.

HVAC OPERATIONS

Summer - June - September

Weekday

Before 9am

Mode 2 – Chillers

At 9am

Mode 3 – Ice Melt

If Ice Farm cannot carry building load – prior to 6pm

Mode 4 – Ice Melt with Chiller Assist

At 6pm

Mode 5 – Make Ice and Building Load

At 8:00pm (provided there isn’t an evening event)

Mode 1 – Make Ice

If there is an event

Mode 5 until conclusion of event, then Mode 1 – Make Ice

Once a full harvest is achieved

Mode 0 – Plant off

Weekend

Friday 6pm

Mode 5 – Make Ice and Building Load

At 8:00pm (provided there isn’t an evening event)

Mode 1 – Make Ice

If there is an event

Mode 5 until conclusion of event, then Mode 1 – Make Ice

Once a full harvest is achieved

Mode 0 – Plant off

Saturday am

Mode 3 – Melt Ice as called for by BAS

10am

AHUS come on to provide air conditioning for the Courts and US Attorneys’ Office

Mode 2 – chillers

4pm

AHUS shut down

Mode 0 – Plant off

Sunday am

Mode 3 – Melt Ice as called for by BAS

10am

AHUS come on to provide air conditioning for the Courts and US Attorneys’ Office

Mode 2 – chillers

4pm

AHUS shut down

Mode 0 – Plant off OR Mode 1 – Make Ice, then Mode 0

Winter - December through March

It is assume that during winter months the outside air temperature will be below 48 degrees and outside air will be used for cooling. The Chillers and Ice Farm will remain off.

If temperatures rise above 48 then HVAC Operation will follow the shoulder months schedule.

Shoulder Months – October, November, April, May

When outside air temperatures are above 48 degrees the summer schedule will be used other than weekday times of 9am will be set to 8am and weekday end times of 6pm will be set to 8pm.

When outside air temperatures are below 48 degrees the system will function in winter mode.

Note: During summer months the Ice Farm will be replenished if the level drops below 90% harvest. In shoulder and winter months the Ice Farm will be replenished if the level drops below 60% harvest.