Sol_75H71026Q00175_Amd_0001.pdf

(x)

75H71026Q00175 x x 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

Kayenta AZ 86033

Highway 160, Mile Post 394.3 PO Box 368 Acquisition Department Kayenta Health Center

06/12/20260001

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

05/29/2026

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 75H71026Q00175 - 0001 is as follows:

1. Solicitation closing date will be extended to: June 26, 2026 @ 12:00 PM MST.

Period of Performance: 07/01/2026 to 10/31/2026

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. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

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

JERLYN R. BEGAY

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 .

Questions & Answers - Installation of Ground Diesel Monitoring Wells

1. Monitoring Wells

• What diameter wells are required (e.g., 2-inch, 4-inch)? NNEPA response – 2-inch monitoring wells

2. Sampling Frequency

• Is sampling expected to be conducted on a monthly or quarterly basis? NNEPA response Quarterly basis in the first year then move to semi-annual the 2nd year.

3. Sampling Parameters Please confirm which of the following are required:

• Water level measurements and product thickness gauging – Yes, required.

• Free product recovery/monitoring – Yes, required.

• Groundwater sampling, including: - Yes, required for both listed.

o TPH-DRO o BTEX

4. Sampling Methodology

• Are we permitted to utilize bailer sampling, or is low-flow submersible pump sampling required/preferred? NNEPA prefers the low-flow submersible pump sampling.

5. To ensure we provide an accurate proposal, could you please let us know whether any specific construction plans are available? NNEPA has no construction plans, Kayenta Health Center has plans of 19 room apartment on east side of compus. We would appreciate any additional details regarding the borehole size (use a 5” hollow-stem auger), screened interval (20 feet, 2 feet above the groundwater level to the total depth), well casing specifications (casing with open hole with 2” PVC pipe, nothing in outer casing), and filter pack requirements (use the borehole completion provided by Katrina Sam, of Navajo Nation Water Resources).

6. Could the government provide a well diagram showing the proposed casing and screen specifications, along with the borehole diameter? This diagram can be obtained from Katrina Sam, of Navajo Nation Water Resources).

7. The scope states to "dig wells per drawing", but I do not see a drawing. Please advise. NNEPA – the drawing only shows the surface location, not completion data. Dig wells per drawing is on last page of SOW.

8. The scope states "Vendor to provide well monitoring services for one year with option of additional year option". Please clarify exactly what you would like provided in these services. NNEPA response – collect water/soil samples to be collected and to submit for analytical results collected the installed monitoring wells.

9. Please confirm whether the four monitoring wells are intended to monitor groundwater or the unsaturated/vadose zone. Additionally, please confirm the required well construction specifications, including the drilling method, casing diameter and material, screen interval, basis for the target depth, sampling frequency, analytical parameters, and whether Navajo Nation EPA has already approved or prescribed a specific monitoring well design.

NNEPA response – The monitoring well installation design and approval is done by Navajo Nation Water Resources, Katrina Sam, they will issue a well permit for the 4 monitoring wells.

Katrina Sam, Civil Engineer Technical, Construction and Operations Branch Department of Water Resources

W: (928)729-4130 C: (928)205-1443 E-mail: klsam@navajo-nsn.gov Website: http://watercode.navajo-nsn.gov

10. Are you able to provide the scope of work and details. Is this for an existing tank installation or monitoring for ground water? Are there any site drawings? NNEPA response – this is to monitor for groundwater, not a tank installation. Any site drawings or building specification would come from Kayenta Health Center. What specific drawing is requested, contact Desmond D. Jones, 928-697-5193.

mailto:klsam@navajo-nsn.gov http://watercode.navajo-nsn.gov/