B09_A02_Question_and_Answers_2_0002.pdf

Number Question Answer Amendment # 1 Will NPS change the NAICS to General Construction? No, not for this solicitation. 1

2 Will NPS host a second pre‐proposal site visit?

Do to the remoteness of the site and lack of staffing at the castle, a second visit cannot be accommodated 1

3 Will the NPS extend dates for submitting Questions? Yes, The questions will now be due May 6, 2022. 1 4 Will NPS extend the Poposal due date Yes, the proposal due date is extended until May 19, 2022. 1

Can the roles of superintendent and safety be combined and carried out by a single individual?

Offeror's proposal shall address proposed combination of roles for evaluation. 2

6 Will the NPS accept alternative HVAC products other than Trane?

Alternative products are addressed in the specified requirements. No "brand name" is required except where explicitly identified in the specifications as such. 2

Sheet E1.0, note 5, states that the contractor is to install PVC coated RMC. All newly installed conduits were schedule 80 PVC. Please confirm schedule 80 PVC is acceptable.

Material shall be as specified in note 5 of sheet E1.0; schedule 80 and PVC coated RMC are both required as described. 2

8 Will a Tribal Monitor be required? If so will NPS provide the monitor?

Tribal monitor will be required please reference attached Tribal Monitor

SOS 2

How many bollards are needed? Are the bollards for protection of the trees?

(Landscape Plan Drawings) Bollards are per L1.0 and C2.0. One Bollard. 2

Please provide a count for signs in the stables and “NPS Staff Only” signs.

Contractor does not specify where this requirement is within the CDs.

No further direction available at this time. 2

11 Will temporary fencing be needed?

DSC ‐ Review 015000 for site enclosure fence. The spec copy I have requires temp fencing of the site. Temp fencing the entire site is impractical and likely unnecessary given that Bonnie Clare Road is closed to the public. Temp fencing may be desired at contractor's option to secure laydown areas and/or job trailers. Past projects have provided adequate protection to the visiting public (tours) and staff by utilizing a combination of orange plastic construction fencing or single‐strand rope with flagging tied at 10' intervals. Orange plastic construction fencing has been difficult for contractors to maintain due to winds at the site, hence the alternative of single‐strand rope with flagging ties. Alternative delineation of work areas is acceptable utilizing Caution tape as specified in section 015000 attached to nylon rope at 10 foot internvals and posts. However, fencing of the entire site for security is not required and contractor is ulitimately responsible for the safety and security of the work area. 2

CLIN 4 in Section B – Bid Schedule reads “Option 3 Unit Cost for Repair of Plaster Ceiling” The specifications reads “Unit Cost #1 – Unit Cost for Stucco Repair” please clarify what is to be included in CLIN 4

Refer to "New Construction" Notes on A. Sheets and Definitiion of Contract Line Itmes section 01 27 00. There are no Bid Options for stucco or plaster repair only unit costs. Unit Cost #1 is for Stucco Repiars (for example see 4/A5.1) and Unit Cost #3 is for Plaster Wall Repairs. 2

Please include more information or a detail for the concrete encased duct bank.

Detail 4/C3.0 if the question is in regards to Bid Option #2 referenced and shown on sheet C1.0 ‐ MR 2

Questions and Answers‐DEVA 236691 Scotty's Castle Climate Control System

Factor 4: Past Performance, states offerors may submit a PPIRS Evaluation. Can we also submit a Previously completed Past Performance Questionnaire?

Yes, as long as you comply with the instructions provided in the Past Performance section of the INSTRUCTIONS FOR THE SUBMISSION OF

OFFERS AND OTHER INFORMATION – COMPETITIVE SOURCE SELECTION. 2

They are asking for 20% Glycol in the chilled and hot closed systems, which is doable. However, they are also asking for 20% glycol in the condenser water. This is not possible, as this is cooling tower water and runs through a bleed (blowdown) cycle every 2.5‐3.0 cycles of concentration. Therefore, glycol would have to be fed to the cooling tower at the same rate as the scale and corrosion inhibitors. This is not only economically infeasible, but the cooling tower blowdown could no longer be run to a drain, as is standard practice. All cooling tower effluent would need to be drained to a separate storage tank and properly disposed of off‐site…at extreme expense. Glycol is not designed for, nor ever used, in cooling tower (condenser) water.

The cooling tower is a closed loop condenser system. These are not as common as open loop cooling towers (which is what the bidder is describing), but this is clear in the documents. The blowdown cycle is on the water in the sump of the cooling tower, which is separate from the closed condenser water loop. Glycol in the condenser loop is not an issue. 2

Is NPS open to using sch 40 carbon steel and copper for the CHWS/CHWR, HWS/HWR systems?

Please bid the job as per the CDs, submit an RFI or substitution request after award. 2

Is it required to certify tanks? If so, please provide more information on moving tank.

Offeror needs to provide a reference to plans/specs. If referring to historic tank on Sheet L1.0 Note #1 the tank does not need to be certified it is not an active tank. 2

Sheet A1.3 keyed note N18: Please provide specifications for custom built‐in desk.

This desk does not have to be custom built‐in since it is a back of house space, it can be a purchased desk that meets the size requirements and is approved by the park as a CA submittal. 2

01 50 00 ‐ Please confirm that the contract requirement includes the contractor providing a Contracting Officer's Field Office. There is no ability to utilize gov't facilities that are unoccupied as the Contracting Officer's Field Office.

Speficiation 01 50 00 3.3B1 is amendmed to require the Contractor provide a Contracting Officer's Field Office. 2