S06 - Att 1 Pre-Bid RFIs 20240319.pdf

No. RFI From COMMENT Response Published

DAX Contracting Solutions, LLC

Can proposals be emailed? If so, whom should we email them too?

NO - Mail hard copy of proposal in to Attn of Lynn Vander Velde and Ryan McMillin 20240118

DAX Contracting Solutions, LLC

Is this project tax-exempt? not tax exempt 20240118

DAX Contracting Solutions, LLC

Can the Superintendent double hat as quality control or site safety? Super can be Safety also but not Quality Control. 20240118

DAX Contracting Solutions, LLC

Can the Superintendent triple hat as quality control and site safety? NO Superintendent can not also be quality control

20240118

DAX Contracting Solutions, LLC

Are we required to complete one phase prior to moving onto another?

Phasing plan will need to be approved prior to work being started. Separate crews may work on different phases if it is not affecting patients and staff or creating a delay to the current phase.

20240118

DAX Contracting Solutions, LLC

Are overnights required for work in corridors? yes unless worked out with the COR on the phasing plan 20240118

DAX Contracting Solutions, LLC

Confirming shutdowns require 7 days notice. 7 Days is needed to notify VA staff 20240118

DAX Contracting Solutions, LLC

Are we required to work in 16 lineal foot sections throughout corridors and patient rooms? yes unless worked out with the COR 20240118

DAX Contracting Solutions, LLC

Are the ICRA barrier required to be 1-hour rated? If the fire suppression or the fire alarm is taken down then yes a 1 hour barrier will be needed if not no.

20240118

DAX Contracting Solutions, LLC

Are the ICRA barriers going to the structure above or to the bottom of ceiling? to the bottom of the ceiling. 20240118

11 RHI, LLC Can bids be submitted via email?

NO - Mail hard copy of proposal in to Attn of Lynn Vander Velde and Ryan McMillin 20240118

12 RHI, LLC Will a ‘Limitations on Subcontracting’ form be provided or should the 852.219-75 section in the solicitation be used?

Provide the information in the 852.219-75 section of the solicitation. 20240118

13 US Vet Supervision per section 01 35 26 - Is the project superintendent required to be onsite at all times during construction?

The SSHO or an equally qualified Designated Representative must maintain a presence onsite during construction operations. The superintendent, separate from the SSHO, is required to be onsite during construction operations.

20240319

14 US Vet

Responsibility Matrix for Potable Water Metering Spec 22 05 19, par. 3.1.I., instructs the plumber to install the potable water temperature, pressure, and flow meters furnished by the controls contractor (section 23 09 23).

Spec section 23 09 23, par. 1.1.D Responsibility Table, indicates that pipe insertion devices, taps, flow, and pressure stations are to be furnished and installed by the Plumber. Please confirm who is responsible to furnish and who is responsible to install the water metering devices.

The plumbing contractor must install all devices furnished by the controls contractor. The plumbing contractor must furnish and install all remaining devices required for the project that are not furnished by the controls contractor to give the owner a complete system at project end.

20240319

15 US Vet Free Chlorine Sensor Note #1 on detail 16, sheet P501, calls for the free chlorine sensor to be a Walchem sensor or equivalent. Is the HaloSense by Equip Solutions an acceptable sensor to install on this project? Please see attached product data.

The attached HaloSense cut-sheet information appears to provide the same functions as the Walchem sensor noted on the drawings. The contractor and their vendor must review all devices confirming they provide the required functions as the listed device before submitting. This MUST be bacnet compatible and must be able to intergrate into our existing B.A.S. SYSTEM

20240319

Tomah VAMC Fix Legionella Deficiencies (C) 36C25224B0004 676-22-101

Pre-Bid RFIs

S06 - Att 1 Pre-Bid RFIs 20240319 1 of 4

No. RFI From COMMENT Response Published

16 US Vet Asbestos Abatement per section 02 82 11, 02 82 13.13, & 02 82.13.19 The abatement specs noted indicate the extent of work as "TBD". Is ACM abatement required on this project?

The VA's recollection is these specification sections were left in for use if needed once construction began.

The VA does not know of any ACM or lead paint interfering with the construction areas and locations involved with the Legionella Project at the Tomah VAMC. Direction at this time is to have contractors add a CONTINGENCY amount of $25,000.00 for abatement.

20240319

17 US Vet Lead-Based Paint Removal per section 02 83 33.13 What areas of the project contain lead-based paint?

The VA's recollection is these specification sections were left in for use if needed once construction began.

The VA does not know of any ACM or lead paint interfering with the construction areas and locations involved with the Legionella Project at the Tomah VAMC. Direction at this time is to have contractors add a CONTINGENCY amount of $25,000.00 abatement.

20240319

S06 - Att 1 Pre-Bid RFIs 20240319 2 of 4

HaloSense Total and Free Chlorine Analyzer www.equip-solu ons.com phone (888) 200 - 1800

The HaloSense range of Residual Chlorine Analysers, Residual Chlorine Controllers and Residual Chlorine Monitors u lize the very latest and best chlorine sensors available in the world today. They are membrane devices which are insensi ve to changing pH, use no reagents, are extremely stable, and have reduced maintenance and reduced whole life costs.

- Amperometric sensors - accepted under US EPA method 334.0

- No chemical reagents - lower cost of ownership

- Stable and reliable - excellent process control

- Suitable for all potable, process and salt waters

- Up to a year between maintenance

- Up to 3 months between calibra ons

- Up to 15 yars life - reduced costs

The HaloSense sensors and fl ow cells are available with diff erent controllers giving you the same great performance with diff erent communica on, display, and control op ons. With the HaloSense range of residual chlorine analysers, you get an extremely sophis cated chlorine analyser, chlorine monitor and chlorine controller.

CRIUS® PeraSense

• High resolu on color display

• Intui ve user interface

• Graphing and datalogging

• NEMA 4X Enclosure

• Op ons:

- Modbus RS485/LAN

- Profi bus

- PID/fl ow controls

- Remote sensors

- Downloadable data logs

- Up to 4 sensors

- Remote access via LAN

- Remote access via GPRS

- Expandable to 16 sensors

Addi onal controller informa on may be found on the CRIUS® product data sheet.

Moun ng Op ons

- Open overfl ow cell (single, double or triple)

- Single closed fl ow cell

- Single or double Autofl ush www.equip-solu ons.com phone (888) 200 - 1800

Principle Of Opera on

The membraned amperometric chlorine sensors, are enhanced with a third, reference electrode which eliminates zero dri . Its unique design means that pH correc on is not usually required at all, completely elimina ng reagents.

In addi on to the state of the art poten osta c chronoamper-ometric free chlorine and total chlorine sensors, the HaloSense range of residual chlorine analysers has all the func onality that you need, and more. Simply choose the CRIUS® controller op-ons to give you the highest quality chlorine analyser, with all the func onality you need at the lowest price possible.

The HaloSense comes with a number of sensors including free chlorine, total chlorine and free chlorine ‘zero’.

Water Treatment

• Chlorine Dosing • Remote Sites

• Cooling Towers • Food Prepara on

• Paper MIlls • Secondary Chlorina on

CO2 Buff ering

As alterna ve to pH compensa on is the use of CO2 to surpress the pH such that changes in the pH of the sample do not aff ect the chlorine reading.

Autofl ush

As described in a separate brochure, the HaloSense can come equipped to automa cally clean itself at user defi ned intervals with all the benefi ts of no operator interven on. The Autofl ush is par cularly useful in food prepara on, pulp and paper, waste water and many applica ons where there is likely to be a build up of solids in the sample.

pH Compensa on

For some applica ons with high and variable pH, pH compensa-on can improve the accuracy of the chlorine readings. For pH compensa on to be valid it must be done with the highest quality pH sensors and with chlorine sensors that have a reduced suscep-bility to varying pH, such as those used in the HaloSense range of chlorine analyzers.

Installa on

The HaloSense can be installed in a variety of auxiliary fl ow cells and selfcleaning devices.

Specifi ca ons Type Membrane covered poten osta c chrono amperometric three-electrode system Measures Total Chlorine or Free Chlorine Range .01-2.0 mg/l, .01-5 mg/l, .01-10 mg/l, .01-20 mg/l, .5-200 mg/l (free only) Resolu on .01 mg/l (ppm) / .1 on 200 mg/l rang Reproducibility Be er than +/- .05 mg/l Stability -1% per month (without calibra on) Working electrode Gold Counter electrode Stainless Steel Reference electrode Silver / Silver halide Membrane material Micro-porous hydrophillic membrane Flow rate Approximately .15 gal/min Temperature range 32 to <113 F Temperature compensa on Automa cally by an integrated thermistor pH range pH 4 up to pH 9 First polariza on me 2 hours Re polariza on me 30 mins Response me T90 approximately 2 mins Zero point adjustment Not necessary Calibra on Manual using electrochemical test kit or DPD test kit Housing material PVC, silicone, polycarbonate, stainless steel Dimensions Diameter approximately 1 in, length 7 in Maintenance intervals

Membrane Electrolyte

Once per year (depending on water quality) Once per year (depending on water quality)

Interferences High levels of other oxidants such as ozone and chlorine dioxide

HaloSense in single closed fl ow cell

HaloSense in single open fl ow cell