ANSWERS_WWTP_Questions.pdf

Responses to Q&As are due NLT noon on Tuesday, 23 September (please submit to keely.webb@us.af.mil and rebekah.yuson.1@us.af.mil). Responses will be posted back to the Solicitation by 4:30 p.m. the same day.

WASTE WATER TREATMENT PLANT (WWTP)

1. Which is preferred - self-cleaning cells or manual cleaning cells? –No preference – must meet industry standards and federal and state guidelines.

2. What is the minimum and maximum supply water temperature? -- Minimum and maximum water temperature unknown. Average groundwater temperature is 73 degrees Fahrenheit.

3. What is the minimum and max water pressure at the WWTP? -- 60-90 PSI

4. A Siemens PLC is provided. What type of SCADA connection is required? -- If tying into controls, then ethernet is required.

5. Is the bidder responsible for the demolition and disposal of the existing equipment and tanks? --

Beale AFB Personnel will remove all unneeded equipment, as necessary.

6. What type of level control is required for the storage tank? -- Manufacturer required automatic level control to control unit on/off.

7. Are Seismic restraints required on the chemical storage tank? – Yes, in accordance with industry standards and state and federal guidelines.

8. Will all necessary power be supplied at the WWTP? Max amp draw? – Yes, power will be supplied, as needed. Current system requires 280 amps.

9. Can Beale AFB supply a 208 – 220 Volt, Single Phase power? -- Yes

10. Can we get drawing of the WWTP building(s)? – Yes – attached to the Solicitation on 22

September.

11. (A) Are seismic tie downs for the brine tank required? (B) Will you require stamped drawings by a licensed California engineer for the tie downs? (C) How about the concrete pad? -- (A) Yes, per the answer in #7 above. (B) and (C) It is up to the prospective offeror to determine if PE stamps are required. If a determination is made, must meet industry standards and federal and state guidelines.

12. (A) Are seismic tie downs required for the new hypo storage tank? Stamped drawings by a (B) California engineer? (C) A ladder? --(A) Yes, per the answer in #7 above. (B) and (C) If determined necessary, shall be in accordance with industry standards and state and federal guidelines.

13. Does the brine tank need the capability to be pneumatically filled by a delivery truck? – Yes.

Tank must have capability to be accessed and filled by delivery truck.

14. Can you please provide the water pressure, average temperature and hardness of the potable water service? – Please reference answers in questions #2 and #3 above for pressure and temperature. Last hardness test was reported at 119 ppm calcium carbonate.

Responses to questions are due NLT noon on Tuesday, 23 September (please submit to keely.webb@us.af.mil). Responses will be posted back to the Solicitation by 4:30 p.m. the same day.

mailto:keely.webb@us.af.mil

Responses to Q&As are due NLT noon on Tuesday, 23 September (please submit to keely.webb@us.af.mil and rebekah.yuson.1@us.af.mil). Responses will be posted back to the Solicitation by 4:30 p.m. the same day.

15. Normal industry common practice now includes a blower to provide positive air flow into the storage tank to assure that no hydrogen is allowed in the storage tank. With this also a hydrogen gas detector is included in the package. Can you please change the specification to include these items? – No, due to the fact that this is common practice, but not an industry standard.

However, this does not relieve the contractor of responsibility to comply with all federal and state guidelines and industry standards.

16. Can you please provide contact information on who we can talk to about the current protocol being used by the base SCADA system? -- POC names will not be provided. Please submit specific questions, as noted in the Header of this document.

17. Please confirm the tank size for the hypo storage tank. 12,000 or 1200 gallons? 1,200 gallons – information will be updated in the Bid Schedule and Solicitation.

18. Please confirm removal of existing equipment. – Yes, Beale AFB personnel will remove all unneeded equipment, as necessary.

19. Do you want an automated level indicator in the new brine tank? -- No

20. Are single wall poly storage tanks acceptable or are double wall tanks for the hypo storage preferred? – No preference – must meet industry standards and state and federal guidelines.

21. Confirm that the base will provide 480 3/phase power to the equipment room along with 240 single phase power. – Yes, will provide.

22. Please confirm that PVC conduit is acceptable for electrical. – No preference – must meet industry standards and federal and state guidelines.

23. Which brand of ball valves are required. George Fisher or Hayward? -- No preference

24. Please confirm that the base will be marking the ground for underground conduits and piping prior to trenching and pad work. – Yes, will provide.

25. What size lines are required from the hypo storage tank to the chemical feed pumps? -- Existing pump is fed by one-inch CPVC lines.

Responses to questions are due NLT noon on Tuesday, 23 September (please submit to keely.webb@us.af.mil). Responses will be posted back to the Solicitation by 4:30 p.m. the same day.

mailto:keely.webb@us.af.mil