W912HZ25R00090001.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 post the Q&A document to the solicitation.

No other changes to the solicitation are being made.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 3

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

16C. DATE SIGNED

BY 05-Aug-2025

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 W912HZ25R0009

X 9B. DATED (SEE ITEM 11)

24-Jul-2025

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 is extended, X 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

05-Aug-2025

CODE

ERDC CONTRACTING OFFICE

3909 HALLS FERRY ROAD

VICKSBURG MS 39180-6199

W912HZ 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912HZ25R0009

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION J - LIST OF DOCUMENTS, EXHIBITS AND OTHER ATTACHMENTS

The following have been added by full text:

QUESTIONS AND ANSWERS

BPA Chemical Analytical Services Q&A Q1) We would like to know if this is 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?

A1) We do have the current BPAs; however, we are going to review all proposals equally.

Q2) Analytical Method Flexibility - For the analyses listed in PWS Table 1, is there flexibility to propose updated or equivalent EPA/SM methods that meet or exceed the detection limits and quality requirements, subject to Government approval?

A2) The methods listed in the table are the most often requested methods. We are open to seeing proposals with other methods that may include better detection limits / more analytes.

Q3) Turnaround Time Exceptions - The PWS specifies a 30-calendar-day turnaround for data deliverables. Are there known projects or task orders anticipated that may require accelerated turnaround (e.g., 7-14 days), and if so, would the scope and response expectations be defined at the BPA Call level?

A3) Yes, we do occasionally have a need for accelerated Turnaround times. This accounts less than 10% of the work and will be defined at the BPA call level.

Q4) Sample Handling – Hazardous or Specialized Materials - Will the Government provide any pre-identification or Material Safety Data (MSDS) information for samples containing potentially hazardous or regulated contaminants (e.g., PFAS, explosive residues, radionuclides), or should the contractor treat all samples as non-potable with unknown content by default?

A4) All samples should be treated as non-potable water and all constituents are of unknown levels. We will request relevant analyses. Any sample that is suspected to be of high concentration will be noted on the COC and communicated with the contractor in advance of shipment.

Q5) Sample Volume Requirements - Will there be standard sample volume or mass requirements (e.g., mL or grams per sample) communicated with each BPA Call, or should offerors assume standard EPA method-prescribed volumes unless otherwise stated?

A5) We will provide the standard sample volume for EPA method extractions. In cases where extremely low limits are required, we will provide additional sample to meet those limits.

Q6) Data Formatting and EDD Validation - Technical Exhibit B provides specifications for Element DataSystem-compatible Electronic Data Deliverables (EDD). Will the Government provide a sample EDD file or validation template to verify structure and formatting prior to first task order?

A6) Yes, we can provide a sample file. All rules listed in the specifications table will need to be met in order to the file to import into our database. This is a general structure for rules to generate.

Q7) QC Reporting Expectations - Are all associated Quality Control (QC) elements (e.g., surrogate recoveries, method blanks, duplicates, spikes) expected to be included in every delivery, or only when required by the analytical method and EPA protocol?

A7) All associated QC elements are expected on each report, additionally CCVs may be required for certain district samples.

Q8) Non-Routine Analyses - Some analyses listed (e.g., radiologicals like Radium-226/228, Gross Alpha/Beta) may not be commonly requested. Will such analyses be required under routine task orders, or are they expected only for rare/special projects?

A8) These are non-routine sampling; all of these requests will be coordinated in advance and will be listed on the delivery orders.

Q9) Sample Return and Retention - Are there any requirements for sample return or minimum retention timeframes post-analysis in the event of reanalysis requests or disputes? If so, what are the expectations for storage conditions?

W912HZ25R0009

A9) Samples are not expected to be returned, except in rare special occasions. This will be communicated in advance. All samples shall be stored according to EPA guidelines and can be disposed of 30 post reporting.

Q10) Shipping and Cooler Coordination - Will the Government coordinate shipment of samples using its own carrier account and tracking, or will the contractor be expected to manage pickup and logistics? Also, will USACE provide tracking info for timely returns of coolers?

A10) USACE will coordinate and pay for all shipping to the lab, all government owned coolers are expected to be returned within 10 business days of arriving to the labs.

Q11) Custom Reporting Needs - Besides the required Excel and PDF data deliverables, does the Government anticipate requesting custom summary reports (e.g., by analyte class, site, or batch) at the BPA Call level? If so, are there formatting templates or historical examples available?

A11) The PDF and excel files are due with every report, occasionally a level 4 report will be requested. This will be listed in the requirement of the delivery order.

Q12) We would like to inquire about the meeting referenced in sections 1.7 and 1.7.1. Could you please clarify whether this meeting will be held online or require in-person attendance?

A12) Online no in-person meetings will be required.

(End of Summary of Changes)