Q and A No. 2 Responses 2021_0302_0002.pdf

Questions and Answers Solicitation 140P8121Q0023 – Amendment No. 02

DEVA – Water Operations Support

Q1. For each plant, what is the water feed rate in gpm, recovery rate, psi rating, array design of each RO system and manufacture of each RO skid, and how long are these unit installed?

A1. Furnace Creek:

1. Feed Rate: 290 gpm

2. Recovery Rate: 80.5%

3. PSI Rating: 150

4. RO Skid Manufacturer: Pro‐Tech

5. Approximate date of install: 04/2008

Cow Creek:

1. Feed Rate: 120 gpm

2. Recovery Rate: 75

3. PSI Rating: 150

4. RO Skid Manufacturer: AMPAC

5. Approximate date of install: 04/2018

Stovepipe Wells:

1. Feed Rate: 50 gpm

2. Recovery Rate: 75%

3. PSI Rating: 150

4. RO Skid Manufacturer: AMPAC

5. Approximate date of install: 4/2018

Q.2 Where does the brine go?

A2. Reject water is disposed of in sanitary sewer

Q3. What grade or training certificate do the current operators have now?

A3. Utility staff have certifications up to T1 and D2.

Q4. Can we get a list of all the RO performance parameters that are recorded? Are these able to be viewed real-time on-line remotely?

A4. Performance can be monitored remotely by the Government. See Attachment for current example of recording sheet.

Q5. Can we get an example of the normalized data used now?

A5. See attached for current example of recording sheet.

Q6. If possible, please provide old feed water lab analysis done that were used to set up the RO anti scale program and RO control set points.

A6. This information is not readily available.

Q7. In the scope section 3: under Monitoring: the RFQ does not define the monitoring frequency NPS is looking for and how the data will be transmitted. Can your team tell us how often we should be reviewing data and for how long, this is outside of the training program that is detailed well?

A7. The monitoring specification is broadly defined in the Scope of Services as it is anticipated that initial monitoring, and monitoring after adjustment/retrofit/cleaning of the plant may be required to be at a more frequent interval, for example: monthly; while monitoring when steady-state conditions are realized may only be required at a less frequent interval, for example:

quarterly. Offeror should identify the proposed monitoring frequency in their proposal.

The Government is capable of transmitting performance data to the successful offeror electronically.

The Government is capable of collecting water samples in the successful offeror’s sample containers, but the successful offeror is responsible for transportation of samples and all laboratory analysis.

Q8. Will we need to hold individual site training at all three plants or will there be one training for all three plants?

A8. Training locations are identified in the Scope of Services, Part 1, Paragraph III.D.ii.

Q9. The actual amount that will be required is difficult to predict as it depends on the actual amount of water used at each plant per year. Please provide the quantity of antiscalant required per year, or historical usage. A typical amount used in the past has been 24 drums. For the purposes of the bid, should we assume 24 drums per year, and then also provide the unit pricing for either 1 shipment of 4 drums or 1 shipment of 32 pails?

A9. Average consumption of Avista 5100 antiscalant has been approximately 18 drums/year.

However, offer must supply a quantity sufficient to meet the supply requirement at the offerors recommended application rate as indicated in the Scope of Services.

Q10. On the anti-scale chemical purchase part of this RFP, is the consulting contractor to assume they are responsible for the entire year of anti-scale chemical supply no matter what happens in the RO operator or is the intent to have the vendor, supply chemical on a as needed basis in the specified volumes/ proportions detailed in the RFP document?

A10. Vendor is to provide antiscalant chemical consisting of a product specifically selected for the chemical water makeup at each plant, for 1 year, as identified and further described in the Scope of Services, Paragraph III.C. As described, the vendor is to select and supply the product for a 1 year period. The basis of design and historic quantities are provided solely to assist the vendor in understanding the historic treatment for scaling at the plants. Neither a specific product nor quantity are stipulated. Vendors proposed product and usage rate are subject to review and approval by the Contracting Officer, as well as continued review of performance monitoring throughout the contract period.

Q11. What liability does the consulting vendor incur if selected to advise the Park Service in terms of system capacity, performance, or operational ability?

A11. Please review the Scope of Services and identify which scope item this question pertains

to. Vendor is required to provide prediction of scaling potential (III.A.v), feedback to park staff on membrane performance (III.B), and operator training (III.D). The National Park Service is the operator of record for the treatment plants.

Q12. When were the last time each system when through a Clean in Place, who performed this service, and do you have any RO element Autopsy report that can be shared.

A12.

Furnace Creek: Array B filters are new within approximately 3 months. Arrays A & C are overdue.

Cow Creek: Cleaned approximately 1 month ago.

Stovepipe Wells: Cleaned approximately 1 month ago.

Cleaning by NPS staff.

No autopsy reports.