Attachment J - N4008017R0006 - Multiple HVAC - PPI 4-6 Government Response.xlsx
XLSX spreadsheet 26 KB Posted
- Attached to
- REPAIR HVAC – MULTIPLE BUILDINGS – FY23
- Solicitation number
- N4008017R0006
About this file
This document contains the government's responses to pre-proposal inquiries for federal solicitation number N4008017R0006 to repair HVAC systems at multiple buildings on a Marine Corps base in Virginia. The Navy seeks HVAC repairs and replacements at several buildings, including new air handlers, condensing units, a chiller, and ductwork testing and balancing. The responses clarify equipment details, control systems, and temporary cooling requirements. Pricing should account for potential material cost increases over six to eight months. Drawings were previously provided except for one building.
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Sheet1
| AMENDMENT 0004 | |||||||
| ATTACHMENT J - N4008017R0006 - GOVERNMENT RESPONSE TO PRE-PROPOSAL INQUIRIES | |||||||
| Question No. | Date Received | REFERENCE | QUESTION | GOVERNMENT RESPONSE | Posted on Amend No. | ||
| Page | Section | Para. | |||||
| 1 | 8/4/23 | - | - | - | CLIN 0001 Building 2077: The RFP requires the condensing units to be replaced in kind. CU-1 and 3 are located adjacent to the exterior wall of the building and may not meet the manufacturer clearance requirements. Should alternative pricing be provided to locate the condensing units at grade to meet clearance requirements? | If new equipment doesn’t meet manufacturer clearance requirements, provide alternate recommendations and pricing. | 0004 |
| 1.a. | 8/4/23 | - | - | - | Please provide any deficiency list for any associated equipment. If no deficiency list is provided is the contractor to assume only deficiencies needed for repair are the three air handlers and three condensers as shown on the walkthrough. | The three (3) Carrier condensing units are all inoperable. We are unable to provide a deficiency report at this time. The Governemnt wants to ensure that all components (electrical,DDC, control valves & dampers and hydronic components)associated with each DX system are operable and will not prevent the new systems from fuinctioning properly. | 0004 |
| 1.b | 8/4/23 | - | - | - | Please confirm that the return fans for the three air handlers are existing to remain. | If the return fans are all operational, they can remain. If components/parts are needed, Provide pricing. | 0004 |
| 2 | 8/4/23 | - | - | - | CLIN 0002 Building 26100 (RTC): Is temporary cooling required to be provided to serve the spaces served by the split system AHU to be replaced? | Yes. | 0004 |
| 3 | 8/4/23 | - | - | - | CLIN 0002 Building 26100 (RTC): The existing AHU appears to be controlled by an Automated Logic DDC system. Is this building connected to the Siemens network? | This building does not have Siemens brand controls. | 0004 |
| 4 | 8/4/23 | - | - | - | CLIN 0004 - Temporary HVAC: Will the temporary cooling currently located at the existing buildings (2074, 2077, 24193, 3240) be retained by the government until construction is complete or will it be removed at the time of award? | The construction contractor will be able to negotiate with the QBOS contractor to take over the rental of the temporary chiller/HVAC after their contract award. | |
| 0004 | |||||||
| 5 | 8/4/23 | - | - | - | CLIN 0004 and CLIN 0011 – Temporary HVAC: Which buildings are covered by which CLIN? What is the difference between CLIN 0004 and 0011? | CLIN 0004 covers temporary cooling for the buildings listed in the Base Bid and CLIN 0011 covers temporary cooling for the buildings listed in the Option bid. | 0004 |
| 6 | 8/4/23 | - | - | - | CLIN 0005 – TAB and DALT: Please confirm that the TAB of all distribution systems means the systems being replaced as part of this contract and not all air distribution systems in the buildings. | Confirmed. Distribution systems associated with the equipment/system replacements in RFP. | 0004 |
| 6.a | 8/4/23 | - | - | - | Please confirm that DALT testing on all existing ductwork means that DALT testing on all sections of ductwork in accordance with the pressure class recommendations from UFC referenced standards. | Confirmed and ANSI/ASHRAE Standards. | 0004 |
| 6.b | 8/4/23 | - | - | - | Please confirm the only DALT testing needed is on new work and not the existing systems. | Is needed for existing duct systems associated with the new system/equipment. | 0004 |
| 6.c | 8/4/23 | - | - | - | Please confirm we are only to test and balance new equipment provided during peak cooling and heating seasons. | Test and balance new equipment and associated ductwork during peak seasons. | 0004 |
| 7 | 8/4/23 | - | - | - | CLIN 0006 – Bldg 3240: Please provide any deficiency list for any associated equipment. If no deficiency list is provided is the contractor to assume only deficiencies needed for repair is the Trane packaged heating and cooling unit? | Known deficiencies are within existing package unit. | 0004 |
| 8 | 8/4/23 | - | - | - | CLIN 0007 – Bldg 3255: Please provide any deficiency list for any associated equipment. If no deficiency list is provided is the contractor to assume no work is needed in this building? | The known deficiencies are within the building air handlers and associated controls. | 0004 |
| 9 | 8/4/23 | - | - | - | CLIN 008 – Bldg 2074: Please provide any deficiency list for any associated equipment. If no deficiency list is provided is the contractor to assume only deficiency needed for repair is the Trane air-cooled chiller. | The known deficiencies are within the chiller. However, we will need the chiller plant (pumps, valves,controls, electrical) assessed to verify the existing components are functional and can accommodate new chiller manufacturer specifications. | 0004 |
| 10 | 8/4/23 | - | - | - | CLIN 0009 – Bldg 3314 (CDC South): Can the controls work required by this RFP be performed during the day or are there specific restrictions to work in the CDC? | Dependent on how extensive the work is in the classrooms. Assume after hours work. | 0004 |
| 10.a | 8/4/23 | - | - | - | Is the intent of the scope to only replace the room thermostats with temperature and humidity sensors? | The intent is to upgrade the thermostats to read temperature and humidity and make any programming changes and/or adjustments if necessary. | 0004 |
| 11 | 8/4/23 | - | - | - | CLIN 0010 – Bldg 3098 Diamond Hall: How many of the existing ducted 33 WSHP systems located ceilings are currenting not functional? Are the existing 3 water sourced AHUs still being utilized? | Cannot verfiy how many WSHP have issues. Will need all 33 assessed and replace all R-22 WSHP's in-kind. All 3 AHU's are being utilized. | 0004 |
| 12 | 8/4/23 | - | - | - | CLIN 0012 – TAB and DALT:Please confirm that the TAB of all distribution systems means the systems being replaced as part of this contract and not all air distribution systems in the buildings. | Confirmed. Distribution systems associated with the equipment/system replacements in RFP. | 0004 |
| 12.a | 8/4/23 | - | - | - | Please confirm that DALT testing on all existing ductwork means that DALT testing on all sections of ductwork in accordance with the pressure class recommendations from UFC referenced standards. | Confirmed and ANSI/ASHRAE Standards. | 0004 |
| 12.b | 8/4/23 | - | - | - | Please confirm the only DALT testing needed is on new work and not the existing systems. | New work and associated duct system. | 0004 |
| 12.c | 8/4/23 | - | - | - | Please confirm we are only to test and balance new equipment provided during peak cooling and heating seasons. | Test and balance new equipment and associated ductwork during peak seasons. | 0004 |
| 1 | 8/4/23 | - | - | - | Please confirm CLIN 0004 and 0005 are also for B24193 | Only CLIN 0004 and part 6c of CLIN 0005. | 0004 |
| 2 | 8/4/23 | - | - | - | Please confirm CLIN 0011 and 0012 are also for B3098 | Confirmed. | 0004 |
| 3 | 8/4/23 | - | - | - | Please provide Mechanical duct drawings for B3098 in order to provide TAB and DALT pricing | Designs and Drawing of all buildings with the exception of Building 26100 were provided in Amendment 0001 posted on SAM.Gov. | 0004 |
| 4 | 8/4/23 | - | - | - | Please provide quantities and sizes of WSHP’s in building 3098 being replaced | Reported that there are 33 WSHP's. Sizes are unknown. KTR shall verify through site visit(s). | 0004 |
| 5 | 8/4/23 | - | - | - | Please verify if there is an existing DDC control system in building 26100 and 3240. If so please verify who the manufacturer/installer is? | B-26100 has off brand controls. B-3240 is standalone/thermostat controlled. | 0004 |
| 6 | 8/4/23 | - | - | - | If there is not an existing DDC system in buildings 26100 and 3240; should new DDC controls be installed for the new HVAC equipment being replaced or just standalone electric controls? | B-26100 provide upgraded controls for equipment. B-3240 replace thermostat to accommodate new HVAC equipment. | 0004 |
| 7 | 8/4/23 | - | - | - | If new DDC controls are needed what manufacturer/installer is preferred to provide the new DDC controls? | Siemens. | 0004 |
| 1 | 8/4/23 | - | - | - | Building 3314-Please provide drawings to show quantities and locations of temp sensors | Drawings were distrubuted via DoD Safe link to all 8(a) Mechanical MACC Contract holders, as a part of Amendment 0001 issued 25 July 2023. | 0004 |
| 2 | 8/4/23 | - | - | - | Please provide drawings if available for each building | Provided in Amendment 0001, with exception to B-26100. | 0004 |
| 3 | 8/4/23 | - | - | - | Please provide any deficiency reports for all buildings. | Do not have record of reports. | 0004 |
| 4 | 8/4/23 | - | - | - | Since deficiencies for each building are unknown, please provide the type of repairs needed for all buildings so all bidder are pricing same SOW. | The repairs for deficiencies (if needed) pertain to the SOW for each building listed in the RFP. For example; If it’s a chiller replacement SOW, ensure pumps, electrical,DDC and associated chiller plant components are functional and can accommodate new chiller maufacturer specifications. | 0004 |
| 5 | 8/4/23 | - | - | - | The acceptance period is 180 days.Given the current market conditions our subs typically hold their pricing for only 15 to 30 days. Can the acceptance period be adjusted or will we have the options of submitting a MOD if increase occur? | Provide pricing with anticipated material costs increase for a 6-8 month period. | 0004 |
| 6 | 8/4/23 | - | - | - | Please provide the MEP drawings on all building for this project? | Drawings were distrubuted via DoD Safe link to all 8(a) Mechanical MACC Contract holders, as a part of Amendment 0001 issued 25 July 2023. | 0004 |
| 7 | 8/4/23 | - | - | - | B2077 – Do you have the equipment tags of the 3 units listed, the RFP only has one listed? | The equipment schedule is listed in the drawings. | 0004 |
| 8 | 8/4/23 | - | - | - | B26100 – Please provide the chiller equipment tag information and what issues have they been having? | Chiller tag was provided in Part 6 with attachments. Chiller has reported refrigerant leak. Refrigerant is/was R22 | 0004 |
| 9 | 8/4/23 | - | - | - | B24193 – Please provide the chiller tag data and what are the issues you been having? | Chiller data available in schedule of drawings. Electrical related failures are reported pertaining to the chiller. | 0004 |
| 10 | 8/4/23 | - | - | - | B3255 – What are the reported heating/cooling issues you have been having? | Issues within the AHU'S and associated DDC. | 0004 |
| 11 | 8/4/23 | - | - | - | B2074 – Please provide the chiller tag data for this chiller? | Equipment schedule available in drawings. | 0004 |
| 12 | 8/4/23 | - | - | - | B3314 – What is the make of the existing BAS system | Controls are Carrier brand. | 0004 |
| 13 | 8/4/23 | - | - | - | B3098 – Please providee the McQuay MAU Tag data. How many Heat Pumps are on the system? | Unavailable. 1- Make-up air handler w/ hot water heating and DX coil & 1- DX- Condenser with 2 stages of cooling. | 0004 |
| 14 | 8/4/23 | - | - | - | Do we include repairs in our proposal, or would that be a change? | Include. | 0004 |
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SOLICITATION NO. &"-,Bold"N4008017R0006&"-,Regular" PROJECT TITLE/LOCATION: Repair HVAC and Replace Roof, Davis Center, Building 3300, Marine Corps Base Quantico, VA 22134
| Attachment B: Pre-Bid/Proposal Inquiry Form |
| &"-,Italic"&KFF0000 |
July 2016
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