697DCK-21-R-00168 Amend 04.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

5. PROJECT NO. (If applicable)2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ.NO.

PAGE OF PAGES

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

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

CODE

9A. AMENDMENT OF SOLICITATION NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

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

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 is extended, is not extended.

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.

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

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO THE AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation date, etc.) SET FORTH IN ITEM 14.

E. IMPORTANT: Contractor is not, is required to sign this document and return

ORDER NO. IN ITEM 10A.

1 4

0004 04/12/2021

FEDERAL AVIATION ADMINISTRATION

AAQ-500 - REGIONAL ACQUISITIONS

1701 COLUMBIA AVENUE

COLLEGE PARK GA 30337

AAQ510ATL-AFN

x

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

separate letter or telegram which includes a reference to the solicitation and amendment number. FAILURE OF YOUR ACKNOWLEDGEMENT 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.

copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By ___________ 1 x x

697DCK-21-R-00168

1 copies to the issuing office.

03/24/2021

(x)

The purpose of 697DCK-21-R-00168 Amendment 0004 is to incorporate Questions and Responses

Set 2, dated April 9, 2021, below. All other terms and conditions remain unchanged.

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. CONTRACT AUTHORITY 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

THUYLINH T. TRANNGUYEN

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

X

4/12/2021

Questions and Responses Set 2

697DCK-21-R-00168

April 9, 2021

Q&R (6-11)

Q6: Are there any hazardous materials present?

R6: There are no known or suspected hazardous materials present.

Q7: Is there a clear ground perimeter around the building for erecting scaffolding?

R7: There is a 1000 gallon above ground fuel tank next to the building that will have to be worked around.

Q3: SOW Item #1, Section 1.1, 1.b, Says “Note – building segments are held together with post tensioned cables, do not expose or alter cables.” Can you confirm if any tensioned cables are located within the areas of the deteriorating concrete roof edge perimeter that is being removed?

R3: The post tensioned cables are contained within sections of pipe, this pipe is run on the building interior side of the exposed reinforcing. If pipe sections are encountered during concrete removal, those sections of pipe contain the post tensioning cables, and these pipes are not be cut. It is anticipated that sound concrete will be encountered at the depth of the first layer of exposed reinforcing. If this is not the case, notify the COR before continuing work.

Q4: 1. E. “Place concrete at roof edge for perimeter areas where concrete has been removed. Use forms and pour Concrete mix MS as manufactured by Quikrete.” Is this specifying Shotcrete MS as manufactured by Quikrete?

R4: No, please see Amendment 03. Known acceptable product: FX-225 Non-Shrink Underwater Grout with FX-752 Epoxy Bonding Agent by Simpson Strong-Tie Company Inc.

Q5: SOW item #1, 2. Prep the Building Exterior, C. “Patch/repair exterior walls and roof as required with Fast Set Repair Mortar as manufactured by Quikrete”. Coordinate roof preparation with roofing material manufacturer’s instructions, see item #4 below”

a. What is the extent of the exterior wall repairs?

b. Are all the exterior wall surfaces “fluted” concrete?

c. Are any concrete “flutes” in need of restoration?

d. Is the roof deck concrete?

e. Is there an existing membrane or other type of roofing system currently on the building roof deck?

f. Is there any equipment on the roof?

R5:

a. Unknown, to be determined at site visit.

b. Yes, fluted.

c. Yes, there are flutes in need of restoration.

d. Roof deck is concrete.

e. There is no existing membrane on the roof. Just lap joints on the seams of the 3 building sections.

f. There is no equipment mounted on the roof.

Q6: Regarding SOW Item #1, 3. Paint building exterior, a paint exterior walls with 2 coats of MasterProtect HB 400 Water based, high build, 100% acrylic water coating.

a. The MasterProtect HB 400 Technical Data Guide States, under “How to apply surface Preparation”; “Concrete substrates should be fully cured.” Concrete fully cures in 28 days, the contract period is only 30 calendar days, is the contract period being extended to meet this manufacturer's requirement or is the contractor being directed to apply the waterproofing prior to the new concrete repairs being fully cured?

R6: a. The new grout can be painted after curing for 7 days.

Q7: Is there a Specification for the new EPDM Roofing?

R7: There is no specification, install per manufacturer’s recommendations. Please note that Amendment 03 includes requirement to overlay the existing roof with DensDeck prior to placing the new roofing material.

Q8: In reference to ITEM #2 Repair/refurbishment of the ATBCI Shelter to include the following:

a. "Remove corrosion from equipment shelter doors and frames" - can you provide photos of corrosion to be removed from doors and frames.

b. "Install new columns at equipment shelter entrance with new footings"- can you provide the requirements for the new footing?

c. Please confirm the quantity of doors and frames which need to have corrosion removed and paint applied.

R8:

a. We don’t have photos of the corrosion. It is only surface corrosion in a few places on two of the door frames.

b. Excavate to a depth of 5’ or to ledge. Form and pour new footings 1’ thick. Form and pour new concrete frost walls on top of new footings. If ledge is encountered, anchor footings to ledge.

c. There are two doors/frames to the ATCBI shelter.

Q9: I would recommend an elastomeric coating for the roof, we use PROREZ products, you would have no seams to contend with and it would last a lifetime and totally seal the top of the building from all weather. I can send you info on it if you are interested.

R9: Offerors are advised to price out the proposed work according to the SOW. Any substitutes must meet or be equal to the item referenced in the SOW. Substitutes will be reviewed and they will be approved or rejected accordingly.

Q10: I would recommend a LOXON XP product from SW for the sides of the building, another product that we have used to seal concrete with great success over the years. I can send you more info if you are interested.

R10: Offerors are advised to price out the proposed work according to the SOW. Any substitutes must meet or be equal to the item referenced in the SOW. Substitutes will be reviewed and they will be approved or rejected accordingly.

Q11: Is it possible to substitute CPARS or other past evaluations from customers in place of the requested Past Performance Survey attachment L2?

R11: Section L Factor 3 – Past Performance requires the submission of Attachment L2 Past Performance Survey, a CPARS will not comply with the SIR requirements.