RFI's.pdf

Q1. Please provide any available analytical data showing the concentration of PFOA and PFOS in the water requiring treatment?

A.1. Max was approximately 700 ppt.

Q2. Please provide any influent and effluent data from previous treatment operations of similar water from the lagoons?

A2. Not sure what you are requesting.

Q3. Do the lagoons have a hard bottom? Concrete Etc.

A3. Clay below with a black HDPE liner.

Q4. Were the lagoons previous cleaned following water treatment? If so are pictures available of cleaning operations?

A4. No pictures available. One was cleaned last year the other the year prior.

Q5. What analytical method should be utilized for PFOA/FOS analysis?

A5. DOD ELAP.

Q6. What is considered a “Rush analysis”.

A6. As fast as possible, typically one week from my recollection.

Q7. The PWS states to treat to “Non‐Detect” however the concentration at which “non‐detect” is achieved can vary slightly from lab to lab and between sample runs. Is there a specific concentration that we should treat to?

A7. Low

Q8. Can an assumed volume be provide for Item 3? It is difficult to develop a trans and disposal price with an assumed volume due to transportation costs?

A8. The plan is to treat and discharge all water to the Town of New Windsor. It is difficult to estimate a volume for item 3, but based on current release rates specified in the Performance Work

Statement, if this option is needed we are assuming that the volume will be low.

Q9. Are the preparation of any work plans, Health and Safety plans or QC plan required prior to the start of operations?

A9. Will need a work plan.

Q10. Should contractor assume the water should be batch tested? One sample per frac tank prior to release?

A10. No batch testing. One test to confirm filtration is meeting the intent.

Q11. What level of analytical reporting is required?

A11. Level I.

Q12. Is data validation to be completed by contractor?

A12. No, government will validate.

Q13. Please provide the approximate dimensions of the lagoons and the lagoon bottoms if they are sloped?

A13. Each approx 160’x 70’ at top and 130’x40’ at bottom.

Q14. What line item on the cost schedule should the removal and disposal of the lagoon sludge be placed?

A14. Line Item 0001, lump sum pricing.

Q15. Please confirm which Department of Labor wage determination applies to this project?

A15. Department of Labor Wage Determination No. 2015‐4159, Revision No. 10 dated 07/16/2019, Area: New York County of Orange shall apply.

Q16. How clean do the lagoons need to be? Is the objective only to remove bulk buildup of sediment and organics, or will the liner need to be pressure washed?

A16. Pressure washed is to be included as well.

Q17. Will any kind of confirmatory sampling of the liner (i.e. wipe test) be needed?

A17. No.

Q18. It appears the sludge removed from the lagoons needs to be sampled, profiled and shipped offsite to an appropriate facility. The PWS sates the lagoon cleanouts are to be completed by

November 1. This may not be feasible based on the due date of the bid, treatment time required

(which is limited by discharge rates) and the time required to analyze, profile and locate an appropriate facility for sludge disposal. Can the timeframe be extended beyond November 1 to complete the lagoon clean outs?

A18. Reference solicitation amendment 0001 that incorporated a revised PWS to push that date out to December 1.

Q19. Please confirm if Item 3 ( IW Haul Off) refers to treated or untreated water. Our past experience is that facilities typically do not allow the transportation and disposal of water offsite with

Known PFA contamination.

A19. Untreated.

Q20. Has a facility been located that is willing to accept the untreated IW water with known PFA contaminant concentrations?

A20. Passaic Valley Sewerage Commission.

Q21. Is a laboratory with a DOD ELAP accreditation required to complete the laboratory analysis for

PFOA/PFOS?

A21. Yes, DOD ELAP required.

Q22. 1. The RFP states that work should be completed by Nov 1. Assuming the flows suggested in the

RFP (55 gpm for Lagoon A and 30 gpm for Lagoon B) and the volumes in each lagoon (310,000 gallons for Lagoon A and 340,000 gallons for Lagoon B), it would take 36 ‐ 8hr working days to empty both lagoons and 27 – 10 hr working days to empty both lagoons without the use of a frac tank. There aren’t that many work days in October to completely filter and discharge the 650,000 gallons requested. Even if a frac tank is utilized, it would still take approximately 2 weeks per lagoon for a total of ~18‐20 days (10 hr/day)?

A22. Work completion date has been extended to 1 December. Our intent was to be able to discharge continuously for 24 hrs per day or close to it.

Q23. The lead time for granular activated carbon (GAC) is two weeks. Even if the contract is awarded in the week of September 16, it will take 2 weeks for the GAC to be delivered to the filtration system subcontractor, who then needs to load the tanks, test the GAC, load the trucks and deliver and install the system. Reasonably speaking that can be achieved by 7 October. However, that cuts significantly into the operational time, which appears to be the month of October (See question 22)?

A23. 1 December is the new revised completion date.

Q24. After filtration system installation and testing, a PFOA/PFOS sample will be collected. Including shipping, it will take approx. 2‐4 days for the sample results, which then need to be discussed with the Town of New Windsor sewer district to get approval. How fast can the Town review the result and provide approval? This will likely cause more delay in system startup and operation and therefore it appears impossible to achieve the RFP’s goals of filtering and discharging 650,000 gallons of water in a likely 2‐week period?

A24. We will contact the town next week and let them know we will begin sampling and testing again and have them ready to go so there should be minimal down time if any.

Q25. Does the Town of New Windsor sewer district personnel require another site visit and inspection of the system prior to operation?

A25. They might.

Q26. How many PFOA/PFOS samples are required? One per lagoon or one at the start of the system operation? Please note that if two samples are required, there will be another delay between Lagoon

A and B operation due to the PFOA/PFOS sample collection, shipping, analysis and results review and the result approval process by the Town of New Windsor sewer district?

A26. One sample post filtration will be adequate, not one per lagoon.

Q27. During the last contract, the local POTW requested many more and different analyses from the lagoon water prior to accepting the water via the sewer lines at their facility. Please confirm that

PFOA/PFOS is the only required analysis?

A27. As of right now that is all that is being tested for. We will contact them prior to confirm. We will have confirmation prior to any samples being sent for testing.

Q28. Is there a requirement for continued PFOA/PFOS sampling of discharge water to confirm that over time the filtration system still operates as designed and that the filtered water still meets the discharge requirements?

A28. No.

Q29. At what concentration does the Town of New Windsor consider to be non‐detect for

PFOA/PFOS?

A29. We will have to look at what your lab is able to test to, the lower the better. Will be the highest level for non‐detect acceptable.

Q30. When the first lagoon is emptied, will it be acceptable to pump the 2‐inch layer of material/drab at the bottom into the lagoon still containing water?

A30. Yes.

Q31. Is there a hydrant available to use near the lagoons?

A31. No, but a fire truck from on base can be used if needed.

Q32. How many days/hours will the winning bidder be able to work onsite? This relates to the short time frame and large volume mentioned above in relation to the time frame crunch?

A32. At least 8 hours.

Q33. What is the discharge rate that will be allowed into the sewer?

A33. Dependent on the glycol COD level. The rate provided was the last testing done for the development of the RFP.

Q34. Will we need to provide frac tanks?

A34. That is up to you, the government is not providing any equipment for this contract. You have a limited amount of time to discharge 650,000 gallons of material at approximately the rates provided.

Q35. The RFP mentioned separate treatment rates for the two lagoons. Is there a design basis for this? How was this determined?

A35. See question 33 and response.

Q36. Is there a PFAS and background analytical to review?

A36. In the past is was measured at approximately 700 PPT.

Q37. Is this a recurring project and have any requirements changed since the last time it was performed? Also what was the influent concentration?

A37. Not recurring.

Q38. Please clarify what ND means for this project and for which analytical list. Just PFOA and PFOS or the DoD PFAS list?

A38. I’m finding more specifics.

Q39. Do we test once for ND or do we need to do it periodically and if so, what frequency?

A39. Once after filtration.

Q40. What analyses are on the discharge permits, what are the limits and is there analytical to review for these compounds?

A40. Discharge based on COD. No additional permits or agreements required.

Q41. What type of liner is in the lagoons?

A41. HDPE.

Q42. Once the sediment/sludge is removed is pressure washing and disposal of fluid considered

“clean” after removing sludge from the lagoons?

A42. Yes, Pressure wash required.

Q43. What is the estimated start date?

A43. As soon as awarded.

Q44. Does the Air Force have a specified disposal method for the sludge and filter media?

A44. No.

Q45. How much sludge is anticipated to be disposed?

A45. Information has been provided in the Performance Work Statement.

Q46. Is there any lab analysis available to indicate starting PFOS/PFOA concentrations and water chemistry?

A46. <= 700 PPT

Q47. Is Non Detect (ND) for discharge considered to be 70 ppt as Navy guidance suggests?

A47. No, 2 PPT.

Q48. What is the closest discharge point for treated water?

A48. Approximately 50’.

Q49. Where did the water in the lagoons originate from i.e. Process or runoff?

A49. Industrial waste from flight line and hangars.

Q50. What type of base access is required for workers besides criminal background check?

A50. Discussed in Performance Work Statement and will be given more specifics after award.

Q51. Do other contaminants besides PFOS/PFOA in the water (if present) have to be included in the treatment?

A51. No.

Q52. Is it possible to increase treated water discharge rate?

A52. Discharge based on COD level, can only discharge as much as is approved based on that level.

Q53. Would you also be able to provide updated water volumes in each lagoon?

A53. Water levels have not changed. Total to dispose still remains at 650,000 gallons.