Sol_140P1525R0007_Amd_0004.pdf

(x)

140P1525R0007 x x

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 electronic communication which includes a reference to the solicitation and amendment numbers. 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 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.

x

PIA

Flagstaff AZ 86001-2694 1824 S Thompson St, Ste 200 NPS, IMR - Arizona MABO

03/19/20250004

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

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

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

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

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

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

03/19/2025

CHECK ONE 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 AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

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

ORDER NO. IN ITEM 10A.

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

The purpose of amendment 004 is to :

1. Add Questions and Answers.

2. Extend the response date to allow adequate time for incorporation of questions and answers into proposals.

No additional questions will be accepted at this time.

Proposals due date is updated to May 8, 2025, 1700 EDT.

All other terms and conditions of the solicitation 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. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

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

Jessica Owens

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

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 .

United States Department of the Interior

NATIONAL PARK SERVICE

CONTRACTING OPERATIONS - CENTRAL

1849 C Street

NW Washington, DC 20240

April 24, 2025

Questions and Answers

NAVA Remove and Replace Concrete and Apron Houses 6,5,4

Solicitation 140P1525R0007

1 Is this a brand-new contract OR if there is (was) an incumbent performing these services? If not brand new, could you please provide the current / previous contract number?

This is a new requirement. (SOW)

2 Are there any TERO taxes, fees, or requirements?

The SOW does not specify any Tribal Employment Rights Ordinance (TERO) taxes, fees, or requirements. Contractors should verify with the Navajo Nation for any applicable tribal regulations, as the project is located within the Navajo Nation boundaries. (SOW, Section K)

3 Is there a designated site visit for the referenced project? If not, will one be made available?

Amendment 01 was issued on 3/27 to schedule a site visit. Site visit was held on April 7, 2025.

4 Per the SOW, Section VII: General Requirements, Subsection C: Details, could the Gov’t please provide the referenced specifications and any available drawings for Contractor use?

The SOW references specifications and drawings to be provided (SOW, Section a, n).

Contractors shall perform work in accordance with attached specifications and drawings, which include modern ASTM, IBC, and general construction standards (SOW, Section _).

Additionally, Portland cement concrete shall conform to ADOT Standard Specifications

Section 1006, requiring a minimum 4,000 PSI compressive strength at 28 days, 15% fly ash or

25% GGBF slag, 4” slump ± 1”, and 5% air entrainment (ADOT 1006-3.01, 1006-4.02).

Contact the Contracting Officer (CO) for access to detailed drawings and specifications.

5 Per the pre-bid site walk, can the Gov’t please confirm there would be no requirements for engineered plans, permitting, SWPPP, BMPs, or Dust Control/Compliance throughout this project?

The SOW does not explicitly require engineered plans, permitting, Stormwater Pollution

Prevention Plans (SWPPP), Best Management Practices (BMPs), or dust control/compliance measures. However, contractors must comply with all federal, state, and local regulations, including OSHA and environmental standards (SOW, Section ). Contractors should coordinate with the Navajo National Monument Facility Manager to ensure compliance with any applicable tribal or environmental regulations (SOW, Section Y).

6 Per the pre-bid site walk, can the Gov’t please confirm water would be available onsite for

Contractor use?

The SOW does not confirm the availability of onsite water. Contractors should assume no park staff or resources, including water, will be provided and include provisions for water in their estimates (SOW, Section `). Water used for concrete must meet ADOT requirements, being clean and free of injurious substances, with no more than 1,000 ppm chlorides or sulfates (ADOT 1006-2.02).

7 Per the pre-bid site walk, can the Gov’t please confirm that a roll-off dumpster would be permitted to be placed/dropped off on-site to collect demolished concrete and construction debris, then scheduled to be removed/hauled away by the Contractor after concrete demolition is completed for the project?

The SOW requires all demolished concrete to be removed from government premises on the day it is excavated and prohibits storing demolition spoil onsite (SOW, Section |, }). A roll-off dumpster may be permitted if it complies with this requirement and is removed daily.

Contractors must coordinate with the Navajo National Monument Facility Manager to ensure minimal impact on the environment and operations (SOW, Section Y).

8 Per the pre-bid site walk, can the Gov’t please confirm that a concrete washout area/basin would be permitted for on-site use, such that the Contractor must remove/haul away all traces of washout preceding the COR’s final project inspection?

The SOW does not explicitly address a concrete washout area. Contractors must ensure the project area remains neat, orderly, and safe, with all debris removed offsite before final inspection (SOW) A washout area may be permitted if all traces are removed prior to the

Contracting Officer’s Representative (COR) final inspection and it complies with environmental regulations. Contractors should coordinate with the Facility Manager to confirm acceptability (SOW, Section Y).

9 Per the pre-bid site walk, can the Gov’t please confirm that a portable restroom may be placed on-site for Contractor use?

The SOW does not mention portable restrooms. Contractors are responsible for all necessary labor, equipment, and supplies, and should include provisions for sanitation in their estimates

(SOW, Section X). Placement of a portable restroom may be permitted if it does not impact the environment, visitors, or staff, subject to approval by the Facility Manager (SOW, Section

Y).

10 Per the pre-bid site walk, will the Gov’t accept a higher flow concrete ready-mix design, with an increased compressive strength of 5,000PSI and a 5” slump +/- 1”, for increased durability and resistance to cracking and wear?

The SOW specifies a 4,000 PSI concrete mix with a 4” slump ± 1” (SOW, Section _; ADOT

1006-3.01). A 5,000 PSI mix with a 5” slump may be considered if approved by a qualified

Engineer, provided it meets ADOT requirements for Class S concrete, including a maximum water-cementitious material ratio of 0.45 and compliance with ASTM standards (ADOT 1006-

3.01). Contractors must submit the proposed mix design for approval at least two weeks prior to use, including trial batch data or mix history (ADOT 1006-3.02, 1006-3.03).

11 Can the Gov’t please confirm if this contract would subject the Contractor to the Navajo

Nation Preference in Employment Act(NPEA) or require the Contractor to register/pay monetary Tribal Employment Rights Ordinance/Office(TERO) fees?

The SOW does not address the Navajo Nation Preference in Employment Act (NPEA) or

TERO fees. As the project is within the Navajo Nation, contractors should verify with the

Navajo Nation for any applicable TERO requirements (SOW, Section K). Coordination with the Facility Manager is required to ensure compliance with tribal regulations (SOW, Section

Y).

12 Can the Gov’t please confirm the Contractor would not be subject to any additional Navajo

Nation Tribal Regulations, Tribal Ordinances, or Tribal Code Enforcement Specifications throughout this project?

The SOW does not confirm exemption from Navajo Nation tribal regulations, ordinances, or code enforcement specifications. Given the project’s location within the Navajo Nation, contractors are responsible for verifying and complying with all applicable tribal regulations

(SOW, Section K). Coordination with the Facility Manager is required to ensure compliance

(SOW, Section Y).