Amendment 0011.pdf

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 purpose of this amendment is to provide updated specif ications, an updated attachment H, and extend the non-price, price, and small business proposal due date to 24 July 2020 1400 EST in accordance w ith Evaluation Notice dated 10 July 2020, for only the offerors that have been notified that they have been included in the competitive range.

See SF30 Block 14 Continuation Page.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 5

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

16C. DATE SIGNED

BY 09-Jul-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 N4008519R9257

X 9B. DATED (SEE ITEM 11)

15-Nov-2019

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

10-Jul-2020

CODE

NAVFAC MID ATLANTIC

ACQUISITION CORE

9324 VIRGINIA AVENUE

NORFOLK VA 23511-3095

N40085 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N4008519R9257

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 0011

The purpose of this amendment is to provide updated specifications, an updated attachment H, and extend the non-price, price, and small business proposal due date to 24 July 2020 1400 EST in accordance with Evaluation Notice dated 10 July 2020, for only the offerors that have been notified that they have been included in the competitive range.

RFP, Part 3, Chapter 6, ESR D30, General System Requirements:

Remove:

“The new facilities shall not use rooftop heating, ventilation, and air conditioning (HVAC) equipment. All major HVAC equipment shall be located in mechanical rooms. Consider attic and above-ceiling placement of AHU equipment only when absolutely necessary. Stairs are required for any above-ceiling or attic located air-handling equipment (excluding VAV terminals). Attic space may be used for mechanical equipment if there is a 6-foot-wide stairway with double doors for maintenance purposes. Equipment with cooling coils placed above ceilings shall have secondary drain pans with approved gravity drainage piping.”

Replace with:

“New facilities shall not use rooftop heating, ventilation, and air conditioning (HVAC) equipment. All major HVAC equipment must be located in mechanical rooms; major HVAC equipment must not be located above ceiling or in attic spaces.

Equipment with cooling coils placed above ceilings shall have secondary drain pans with approved gravity drainage piping.”

On RFP, Part 3a/3b/3c/3d (P378F, P707F P728F, P695F), Section 6.0 Engineering System Requirements, ESR D30 HVAC, D303001 Chilled Water Systems

Replace in its entirety with:

“Provide high‐efficiency air‐cooled chillers. Where space allows, evaporators are preferred to be Shell and Tube type due to water issues local to MCB Camp Lejeune. Evaporators must be provided with factory‐installed electric freeze protection.

Provide constant primary/variable secondary pumping systems on single chiller systems greater than 60 tons and on multiple chiller systems. Primary pumping may be used only on single chiller systems less than 60 tons. Keep flow through the chiller constant; do not use variable primary flow. A buffer tank must be provided on all systems to provide thermal inertia. Provide multiple chillers for loads greater than 160 tons with each chiller sized for 50% of the total facility cooling load.

Scroll compressors are preferred for chillers smaller than 100 tons. Screw compressors are preferred for chillers larger than 100 tons.

For unique facilities that exhibit widely variable occupant loading, multiple dissimilar sized chillers must be provided as appropriate for the low occupancy condition and fully occupied condition and must be piped to a common header. For air‐cooled scroll compressors, if low load levels are required the chiller is to include hot gas bypass to allow unit operation to 10% of full load to prevent compressors from staging on and off.

The chillers must be located in an exterior equipment yard area and properly spaced from each other and other equipment away from building perimeter. The air‐cooled chiller(s) must be located outside on a 6‐inch thick reinforced concrete housekeeping pad. Provide heat tape to ensure freeze protection as low as 10°F on chilled water piping and any other associated appurtenances. Refer to the MCB Camp Lejeune mechanical policy for the requirements for phase and voltage protection requirements for chillers. Provide emergency chiller connections consisting of isolation valves and blind flanges.

Low ambient capability must be provided to allow chillers to operate in temperatures as low as 15°F.

All coils must have the approved coatings that pass a salt‐spray test conducted per ASTM B117 for duration of at least 6,000 hours and provide a minimum of loss of heat transfer due to the thickness of the coating.

Coil coating must be a flexible epoxy polymer e‐coating uniformly covering the coil. Coating must meet 5B rating for Cross Hatch Adhesion according to ASTM D3359‐97. Coils must include a top coat to prevent UV degradation of the e‐coating film. Top coating must have a dy film thickness from 120 to 170µm. Field coated coils will not be accepted.

All coils must be constructed of compatible metals such that galvanic corrosion does not occur.

Chillers must utilize thermal dispersion type flow switches. Paddle type flow switches will not be accepted.

Chillers must include phase loss with under/over voltage protection with LED indication of the fault type.

Chillers must have a centrally located weatherproof control panel to include a DDC microprocessor controller. The control box must be designed in accordance with NEMA 3R SS rating. Controllers and screens must be located within the panel and not exposed to sunlight.

Chillers must be equipped with louvered coil guards, top and bottom. Condenser fans must have sound attenuating boxes or columns as needed to reduce sound pressure levels to 85 dBA or less with a reference pressure of 20 micropascals in accordance with AHRI 575.

Provide the approved quantity, size, spacing, material, and height of bollards around all yard equipment.

Provide insulation and vapor barriers on all chilled water equipment. Use polyisocyanurate with Aluminum cover.

Provide complete system flushing and start‐up for the entire chilled water system including piping.

Provide air vents at all terminal equipment and system high points, drains at system low points, and provide chemical treatment equipment for chilled water piping system.

Chillers must include “Y” type strainers.

Startup must include operational testing of chiller equipment and full commissioning.”

On RFP, Part 3a/3c (P378F, P728F), Section 6.0 Engineering System Requirements, ESR D30 HVAC, D304006 Chilled Water Distribution Systems

Replace in its entirety with:

“For buildings with less than 60 tons of cooling load, provide a constant primary pumping system to serve the HVAC chilled water equipment throughout the facility. For buildings with more than 60 tons of cooling load, provide a constant primary/variable secondary pumping arrangement with a single primary pump per chiller. For buildings with more than 160 tons of cooling load, provide a constant primary/variable secondary pumping arrangement with two primary pumps per chiller. Secondary variable pumps must be dual arm or lead/lag. In all cases, keep flow through the chiller constant.

For building less than 160 tons, provide two primary pumps or two secondary pumps as appropriate with each pump sized for 100% flow. For buildings with more than 160 tons, provide three secondary pumps, each sized for 50% of maximum building flow. Two pumps must operate as duty pumps and the third must act as standby.

Provide a control sequence to rotate pump duty/standby assignments monthly and equalize running hours.

Provide valves and related chilled water system appurtenances. Provide an expansion tank and air/solids separator in chilled water system. “Triple duty” or “multi‐purpose” valves that combine a check valve, throttling valve, and shut‐off valve must not be used for the chilled water system. Provide air vents at all terminal equipment and system high points for air control. Provide factory installed flanged strainer package.

Provide steel and copper chilled water supply and return piping to serve the HVAC equipment throughout the facility. Insulate piping with cellular glass insulation on all above ground chilled water distribution piping.

Provide air vents at all terminal equipment and system high points for air control. Provide a shot type feeder for manual chemical feed for the chilled water piping system.

Provide thermal mass capability in the chilled water system to insure proper control and longevity of chillers by using inertia tanks. Provide inertia tanks, sized per chiller manufacturer recommendation to ensure stability of operation and temperature set point control. Total chilled water system volume must be a minimum of 7 gallons per ton of cooling. Provide an insulated storage tank within the mechanical room in order to meet this requirement.

Provide insulation, vapor barrier, and aluminum jacketing on piping exposed to outdoors. Install heat tracing on piping to ensure freeze protection to 10°F.

Provide system flushing and startup for the chilled water piping system.

Provide complete startup and operational testing of all chilled water systems.”

On RFP, Part 3b/3d (P707F, P695F), Section 6.0 Engineering System Requirements, ESR D30 HVAC, D304006 Chilled Water Distribution Systems

Replace in its entirety with:

“For buildings with less than 60 tons of cooling load, provide a constant primary pumping system to serve the HVAC chilled water equipment throughout the facility. For buildings with more than 60 tons of cooling load, provide a constant primary/variable secondary pumping arrangement with a single primary pump per chiller. For buildings with more than 160 tons of cooling load, provide a constant primary/variable secondary pumping arrangement with two primary pumps per chiller. Secondary variable pumps must be dual arm or lead/lag. In all cases, keep flow through the chiller constant.

For building less than 160 tons, provide two primary pumps or two secondary pumps as appropriate with each pump sized for 100% flow. For buildings with more than 160 tons, provide three secondary pumps, each sized for 50% of maximum building flow. Two pumps must operate as duty pumps and the third must act as standby.

Provide a control sequence to rotate pump duty/standby assignments monthly and equalize running hours.

Provide valves and related chilled water system appurtenances. Provide an expansion tank and air/solids separator in chilled water system. “Triple duty” or “multi‐purpose” valves that combine a check valve, throttling valve, and shut‐off valve must not be used for the chilled water system. Provide air vents at all terminal equipment and system high points for air control. Provide factory installed flanged strainer package.

Provide steel and copper chilled water supply and return piping to serve the HVAC equipment throughout the facility. Insulate piping with cellular glass insulation on all above ground chilled water distribution piping.

Provide air vents at all terminal equipment and system high points for air control. Provide a shot type feeder for manual chemical feed for the chilled water piping system.

Provide thermal mass capability in the chilled water system to insure proper control and longevity of chillers by using inertia tanks. Provide inertia tanks, sized per chiller manufacturer recommendation to ensure stability of operation and temperature set point control. Total chilled water system volume must be a minimum of 7 gallons per ton of cooling. Provide an insulated storage tank within the mechanical room in order to meet this requirement.

Provide insulation, vapor barrier, and aluminum jacketing on piping exposed to outdoors. Install heat tracing on piping to ensure freeze protection to 10°F.

Provide system flushing and startup for the chilled water piping system.

Provide complete startup and operational testing of all chilled water systems.

Provide emergency chilled water connections for portable chillers on installations with a single chiller. The connection shall be a full-size tee with lugged type butterfly valves for both the portable and stationary chiller.

Provide cap on portable connection with blind flanges.

(End of Summary of Changes)