Water Treatment Q and As.pdf

FA251724Q0064 – Water Treatment Questions & Answers

Q1: About domestic water testing, can you provide the name and specifications of the current chemicals being used, dosage, and requirements?

A1: Contractor will provide the dosage required to meet the State of Colorado Chlorine Residual Requirements. OX76685 Sodium Hypochlorite 12.5% MFG: Univar USA INC MSN:

6810PHM00011476

Q2: Is there time to obtain a Class D license prior to contract performance or is this required prior to award?

A2: No. Licensing must be valid upon contact award.

Q3: Cooling towers – can you provide tonnage and total gallons of water on each system?

A3: 538 Tons each, (Main Towers); 313 Tons each, (Aux Towers); 1500 Tons each, (Outside Towers).

Q4: Can you confirm if towers are run by season or if they are run year-round?

A4: Year-round, alternating run times.

Q5: For cleanup of the towers, is the contractor responsible for all cleaning or is there anything the Government handles separate from this contract? Please reference PWS paragraph 1.2.4.

Q6: At the site visit it was mentioned that there are independent agencies that can assist with either getting escorts or obtaining escorts rights for our employees. Can you provide the name of that agency, and do you have an estimate based on historical data of how long the process takes?

A6: Upon contract award, a list of escort agencies will be provided. The clearance process for a contractor to obtain restricted area access can range between two to six months.

Q7: Can you provide the recirculation rates for Towers 6-10, preferably in gallons per minute (GPM)?

If that is not available, perhaps the individual pump rates in GPM can be provided?

A7: 300 GPM

Q8: Same question as Q7 above, but specific to towers 2-4.

A8. 300 GPM

Q9: Same question as Q7 above, but specific to towers 11 and 12.

A9: 1225 GPM EACH.

Q10: I believe your previous vendor contract you were leasing the controllers and equipment from Chem-Aqua. Would you want to continue leasing replacement controllers or purchase equipment outright?

A10: Please reference the PWS provided, paragraph 1.1., the government will purchase the equipment for towers 6-10.

Q11: What is the estimated annual water usage in gallons for all of the cooling towers? Please provide for each tower if that data is available.

A11: 1.5M gal per tower (Inside) and 1M gal per tower (Outside)

Q12: Please confirm number of closed loops and volume per loop, with chemical application infrastructure.

A12: Number of closed loops is five (5). Total volume for closed loops is 74K. Chemicals will be added through pot feeders at each closed loop.

Q13: How do we access the Heating Water for sampling and treatment addition?

A13: Access is gained through a valve located at the pot feeder of the heat exchanger.

Q14: What chemistries are required for closed loops? IE nitrite, silica, etc.

A14: Please reference PWS paragraph 1.2.3.1.

Q15: If we add chemical to the loops and you have leak - how do we get paid for additional chemical?

A15: This could be submitted as a request for equitable adjustment with a modification being accomplished after the fact.

Q16: How often should tower cleaning reoccur?

A16: Annually or as required.

Q17: If the loops have not been treated and you add chemical they could turn dirty - should the loops be flushed and retreated or add cleaned first?

A17: Loops are being treated. No flushing/retreatment required.

Q18: Please confirm if we can drive a delivery truck into the mountain or how delivery would work.

A18: Contractor may submit a VAR (Vehicle Access Request) to deliver chemicals to/inside the complex. Upon contract award, the COR will provide required documentation for access.

Q19: Are there any grease traps that need treating?

A19: No

Q20: What is the potable water usage so we can get idea of chlorine usage?

A20: Allotted up to 30K gal a day.