Attachment 3 - 99 CES Fuel Spill Cleanup QA1.docx
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- Attached to
- 99 CES Fuel Spill Cleanup
- Solicitation number
- F3G3CE5147A002
About this file
This document is a Questions and Answers (Q&A) attachment for a fuel spill cleanup project at Nellis Air Force Base. The project involves removing fuel-contaminated asphalt patches (150' x 4') and contaminated soil from a 25' x 20' area to a depth of 6', with an additional 190 tons of previously excavated soil to be disposed of. Key details include a total estimated volume of 350 tons of contaminated material, with pricing to be determined on a per-ton basis if excavation exceeds that amount. The cleanup requires Nevada-certified laboratory analysis for Total Petroleum Hydrocarbons, with potential additional testing for VOCs and SVOCs if concentrations exceed 100 mg/kg.
The solicitation is a small business set-aside under NAICS code 562910 (Remediation Services) with a $25 million size standard, seeking a firm fixed-price contract. The project has a 60-day performance period at Nellis AFB, Nevada, with the Civil Engineering Squadron responsible for soil replacement. Contractors must coordinate utility locates, obtain dig permits, manage dust control, use hydro-excavation near piping, and be escorted at all times. Specific requirements include using a Nevada-certified Environmental Manager, submitting a closure report to NDEP, and adhering to airfield management regulations for site safety and equipment restrictions.
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Requirement Number: F3G3CE5147A002 Requirement Name: 99 CES Fuel Spill Cleanup Q&A
New questions from the Site Visit 25 July 2025
Q: Addendum #2 – the additional 190 tons, is that soil stockpiled in the anticipated work area? Or is it located elsewhere on site? Please advise.
A:the 190 tons of soil are stockpiled in a different area near the landfill
Q: Can soil be stockpiled on poly plastic in lieu of in roll offs?
A:Yes, it can and try to cover it as a best management practice
Q: Is confirmation soil sampling required underneath the asphalt that is to be removed?
A:yes a soil sample will need to be taken under the asphalt
Q: If impacted soil is present underneath the asphalt strips to be removed, will this be a change order?
A: The contract includes soil under the asphalt but if something is encountered that’s outside of the scope of the contract then we will look at a change order
Q: Are safe digging methods such as hydro excavation or vacuum excavation required in areas that have fuel transmission lines present?
A: Hydro excavation is preferred when digging around piping lines
Q: What total tonnage should be used in the bid? Assuming the excavation area soil and stockpiled soil are combined.
A: 350 Tons plus price per ton if exceeded
Q: Are any certifications beyond being Nevada certified required for the laboratory used for soil sample analysis?
A: All samples should be analyzed by a Nevada-certified lab for Total Petroleum Hydrocarbons by either EPA Method 8015 or TNRCC Method 1005. If there are TPH concentrations above 100 mg/kg, it is a good idea to also analyze those samples for VOCs by EPA Method 8260 and SVOCs by EPA Method 8270 to determine the concentrations of the petroleum constituents.
Q: What turnaround time should the laboratory costs be based on? 5-10 business days is standard.
A:10 business days
Q: Will any other closure reports be required to be submitted to the DoD in addition to the NDEP report?
A:No
Q: Will dust suppression be required? If so, is water available for filling water trucks?
A: Yes, this will be a requirement in the dust permit. Contractor will coordinate with CEOIU for filling water trucks
Q: Are any fire hydrants in the area able to be used for dust control?
A: Yes. Contractor will coordinate with CEOIU
Q: Is barricading or fencing required to be installed daily after work has ceased? Will any barricading or fencing required to be left in place until the CES backfills the excavation?
A: The contractor will need to place low profile barriers with lights up on the paved surface, but the actual type and size would need to be directed to airfield management as they are the ones that direct on the airfield how jobsites need to be blocked. Their regulations would dictate what needs to be used to safe the area during and at the end of the day.
Q: How many soil samples should be assumed for bidding purposes?
A: To be determined in the field in order to achieve confirmation of clean closure:
· Vertical delineation of soil contamination has been determined with either non-detect sample at depths below the contamination, a data set showing clear decreasing trends of contaminates at depth or samples from the soil column all the way to the top of the water table
· Lateral delineation of soil contaminates has been determined by surface sampling, sidewall sampling,
· Density of confirmation samples is adequate to make an informed decision (From NDEP Petroleum in Soils Closure Checklist, General Closure Provisions July 2022)
Q: What closure report format should be used? A: Clean closure: All soil results from the final excavation are below NDEP action levels (100 mg/kg for TPH).
Q: Is confirmation soil sampling required underneath the asphalt that is to be removed?
A: yes
Q: If impacted soil is present underneath the asphalt strips to be removed, will this be a change order?
A: The contract includes soil under the asphalt but if something is encountered that’s outside of the scope of the contract then we will look at a change order
Q: Are safe digging methods such as hydro excavation or vacuum excavation required in areas that have fuel transmission lines present?
A: Hydro excavation is preferred when digging around piping lines
Q: What tonnage should be used to bid on the removal of the stockpiled soil? Or should it be included in the 250-300 ton estimate that was provided?
A: : 350 Tons plus price per ton if exceeded
Q: Will dust suppression be required? If so, is water available for filling water trucks? Are any fire hydrants in the area able to be used for dust control?
A: Yes, this will be a requirement in the dust permit. Contractor will coordinate with CEOIU for filling water trucks
Q: Is barricading or fencing required to be installed daily after work has been ceased? Will any barricading or fencing required to be left in place until the CES backfills the excavation?
A: The contractor will need to place low profile barriers with lights up on the paved surface, but the actual type and size would need to be directed to airfield management as they are the ones that direct on the airfield how jobsites need to be blocked (this should be discussed at the kickoff meeting). Their regulations would dictate what needs to be used to safe the area during and at the end of the day. The low-profile barricades must remain in-place for the duration (start to finish) of the removal. Per MSgt Byron Wilkins: I recommend a pre-construction site survey with all invested parties prior to the start of the removal.
Q: Please clarify if CEM oversight is required for the duration of all excavation activities or is it only needed during confirmation sampling?
A: NAC 459.9719 requires that consulting services involving response, assessment, or cleanup of a hazardous substance release that are conducted for a fee must be performed under the direction and responsible control of a Nevada Certified Environmental Manager. Information on the NDEP Certification Program can be obtained by contacting Certification Program staff at 7756879368 or at the Certification Program website at https://ndep.nv.gov/environmentalcleanup/certification. A Nevada CEM to oversee the cleanup and report preparation to ensure that the process goes smoothly.
Q: Where is the closest water source to refill water trucks?
A: Contractor will coordinate with CEOIU
Q: Will the hydrant meter be provided to attach to our trucks?
A: Contractor will coordinate with CEOIU
Q: You mentioned utilities at site 1. Can you provide an asbuilt drawing?
A: asbuilt will be provided once contract has been awarded
Q: Will hydroexcavation be required?
A: Hydro excavation is preferred when digging around piping lines
Q: Please share requirements for vactrucks?
A: Same as Base access requirements
Q: Please confirm that your depth of material to be removed under the patched area?
A: unknown to be determined in the field
Q: Please confirm concrete is to remain.
A:All concrete will remain, only asphalt (150’x4’) will be removed
Q: Drawings show required excavation of 6’ feet deep from top of asphalt. Area has been disturbed. Material has also been relocated to a secondary site. It was shared that respondents should only price 300 tons of material. Please confirm that the quantity has been changed from geometric to volumetric measurements.
A: the quantity should be measured in tons
Q: The stained area to remain on the side of the paved trench?
A: Yes stained area will remain
Q: Will the respondent be escorted for the entirety of the project negating any trainings or will we need to account for certain trainings to work onsite?
A: The Contractor will be escorted the entire time
Q: Is there any incumbent/recompete or this is a brand-new project?
A: This is a new one-time service requirement. Our goal is to achieve “Clean Closure” as it pertains to the fuel spill.
Q: Can a copy of Total Petroleum Hydrocarbon (TPH) and/or Volatile Organic Compound (VOC) for Asphalt and Soil to be excavated, transported, and disposed of be provided? We would need these analytical data prior to disposal for acceptance at facility, which is required by NDEP, and EPA for proper approval of excavated material. After excavated material is disposed then we will sample, test for a clean and closure report.
A: Yes
Q: What is the depth/thickness of the slab/asphalt adjacent to the excavation area?
A: 4 inches
Q: Will backfill and pavement be the responsibility of the 99 Civil Engineering Squadron personnel as implied with the Performance Work Statement Description of Services?
A: Yes. The source of the backfill will be provided to the contractor as required for the site closure request that will be drafted and submitted to the NDEP.
Q: On the green lines shown on attachment 2. Do you want us to remove everything within the green lines? Is there additional areas outside of the green lines be required for removal?
A: This is the only section that needs to be removed (150’ x 4’)
Q: What are the notifications required to the 99 Civil Engineering Squadron to limit the excavation to be exposed to air? We want to ensure that air slacking and sloughing is not an issue since the plan view implies there will be a vertical unsupported excavation adjacent to the asphalt.
A: Contractor has to submit a dust permit application if it’s over ¼ acres and if over 1 acre a SWPPP required
Q: Do you expect the removed soil to exceed 250 tons?
A: Yes depending on how deep the contamination is. 300 Tons (I would request a lump sum estimate for up to 250 or 300 tons and request a price per ton for any impacted soil excavated, transported, and disposed of in excess of that amount)
Q: If total petroleum hydrocarbon (TPH) concentrations exceed 100 mg/kg, the contractor is required to analyze samples for volatile and semi-volatile organic compounds. In such cases, does the 99 CES anticipate submission of a "dirty closure" request to NDEP, or is additional excavation expected to achieve unrestricted closure.
A:No. There is an anticipation of additional excavation to achieve unrestrictive closure/NDEP “Clean Closure” vs. NDEP’s “Analyte-Specific Closure”.
Q: If sidewall confirmation samples exceed applicable NDEP action levels, is it the government’s expectation that the contractor will conduct additional lateral excavation and follow-up sampling, potentially increasing the volume of impacted material to be removed?
A: Yes, a price per ton in excess of 300 tons should be provided.
Q: Will the 99 CES coordinate utility locating services, or is it the contractor’s responsibility to coordinate utility clearance through the AF Form 103 dig permit process?
A: Contractor is responsible to obtain approved AF Form 103 (Dig Permit)
Q: Will the 99 CES submit the Base Civil Engineer work request, or is the contractor responsible for initiating and managing the request through the AF Form 332 process?
A: Contractor will be responsible to enter in NexGEN
Q: The PWS states that 99 CES will be responsible for replacing removed soil. However, will the contractor be expected to grade, compact, or stabilize the excavation area before turnover, or is backfill and site restoration entirely outside the contractor’s scope?
A:No, the contractor will not be responsible for grading, compacting, or stabilizing the excavation area
Q: Are there any flightline or restricted area access requirements and escorts needed?
A: Yes, an escort will be provided by DAF.
Q: Will the contractor be required to file a NOTAM?
A: what equipment will be brought in and what will be the highest point the boom be at? Airfield Management will submit NOTAMs prior to project start. The project manager and contractors must provide AM with pertinent NOTAM data. This is discussed during the pre-construction meeting.
Q: Flightline training or security clearance needs?
A: DAF will provide an escort, and all site personnel will need to acquire a contractor base pass. The owning unit of the project will provide Airfield drivers training to contractors and handle security requirements.
Q: Due to flight area is their Work-time or shift limitations?
A: There may be restrictions on work days / work times based on proximity to munitions that could be present.
Q: Equipment height restrictions?
A: NOTAM request will be submitted and be based on the equipment/personnel that will be on the airfield. The project manager and contractor will provide Airfield Management with all pertinent equipment data (i.e., heights, erected duration and location). AM can assist the project with submitting a Terminal Instrument Procedures (TERPS) request, so that all erected obstacles are evaluated prior to project start.
Q: FAA waiver requirements (if applicable)?
A: At minimum, a Temporary Airfield Construction Waiver (TACW) and Risk Assessment must be completed by the project manager prior to project start. The TACW and RA will then be coordinated for approval to the Installation Commander
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