Questions and Answers 1-11.pdf

W50S9F25Q0004 Removal and Disposal of PFAS/PFOA Compromised Soil

Question # Question1 Answer Date Posted to SAM Date Received 1 Based on the DoD guidance, it is preferred that it is disposed of at a

Subtitle C landfill unless that option is not reasonable. From my research, the closest Subtitle C landfill would be in Peoria, approximately 200 miles away. Would this be considered unreasonable and therefore, we could use a Municipal Solid Waste Landfill?

Provided the MSWLF is willing to accept the soil, i.e., the soil is determined to be at or below limits for PFAS--based on their testing protocols--it would acceptable to dispose of it there. Guidance applies to soil that tests at or above limits set by receiving landfill. As stated in the RFP, the government believes the ratio of compromised to non-compromised soil to be 35:65.

9/2/2025 8/22/2025

2 What level or concentration, in ppm, of PFOS/PFAS would constitute a “compromised” soil? The Bid schedule indicates two types of PFOS/PFAS soils for disposal.

Generally, a landfill will set concentration limits for for PFOS/PFAS.

The government will not specify a limit, for concern that it may not match limits set by the landfill.

9/2/2025 8/25/2025

3 Is there any analysis available for this soil pile? None that would be considered reliable for characterization. 9/2/2025 8/25/2025

4 Does Truax Field anticipate any contaminants other that PFOS/PFAS compounds such as RCRA metal, VOCs, SVOCs, PCBs etc?

The pile has not been tested for the presence of these contaminents. 9/2/2025 8/25/2025

5 What is the square footage of the area to be restored with top soil and seeding?

Will be based on the profile of soil that remains onsite, if any. If all soil can be removed, assume roughly 30,000 square feet.

9/2/2025 8/25/2025

6 The RFP requires offerors to assume 35% of the disposal waste is “Compromised.” Additional, Section 5.2 of the PWS states as follows. - When any testing results are returned, regardless of whether the contractor is required by landfill(s) or disposal site(s) to perform a one-time characterization of the pile or batch test loads of soil, the contractor will designate and manifest loads that are compromised such that they are admitted to a higher-level landfill, i.e., treated as a hazardous waste.

Please confirm that offerors are required to price the compromised materials for disposal in a hazardous waste landfill, and that Subtitle- D disposal (non-hazardous) assumptions are not acceptable.

The government seeks what amounts to per-unit price bids of hazardous and non-hazardous disposal, based on the assumption that there is a meaningful cost difference between disposal in each. This is because we assume the ratio of compromised to non-compromised soil to be 35:65. Because the government does not know where compromised and non-compromised soil 'pockets' exist, it wants to give flexibility to bidders to either characterize the pile or perform load-by-load testing.

Quoters are encouraged to submit multiple quotes presenting alternative terms and conditions, including alternative line items. For the reasons above, final contractual line items may differ from the solicitation, and/or any contract may require that a modification be considered.

9/2/2025 8/26/2025

7 The Period of Performance indicates 180 days for the base period and 6 option periods with an additional 180 days each. Can the contractor assume that the options will be exercised concurrently with on-going work, as needed, or should the offeror assume a stoppage between options? i.e. demobilize/re-mobilize.

It is the government's intent to avoid work stoppages, and therefore it can be reasonably assumed that the government will work to ensure options will be exercised concurrently.

9/2/2025 8/26/2025

8 Could you confirm if there is a need for any performance or payment bonds to be included in this project?

Neither performance nor payment bonds are required. 9/2/2025 8/27/2025

9 Regarding PFAS sampling and landfill acceptance, will the Government supply a specific format for the required testing documentation, or should we plan to utilize our standard reporting templates?

Standard reporting templates should be considered a point of departure, and may serve as the basis for a finalized product, based on the review and approval of the government.

9/2/2025 8/27/2025

10 For the restoration section, while it mentions topsoil and seeding to match the surrounding areas, can you clarify if detailed specifications for restoration will be provided? For example, will grading tolerances or specific soil depth requirements be outlined?

Grading tolerances are listed in the RFP. Soil depth should be based on reseeding method/seed chosen. Typical is 2" topsoil.

9/2/2025 8/27/2025

11 For seeding, could you confirm the exact seed mix type and any specific specifications intended for this project?

Any perrenial seed/mix that is appropriate for midwest climate, e.g., bluegrass.

9/2/2025 8/27/2025

1 Questions are posted exactly as asked by those not affiliated with the Government