Questions and Answers to Project Documents — Business Opportunities
PROJECT:  Emergency Fuel Shutoff System (EFSO)
NUMBER:  201846270-00

Current as of:  6/25/2019
 
Question Number  1:   Sheet C-114, Demolition and C-119 Panel Installation. It appears that conduit repair in Detail 1 is located within the Concourse A. How will the excavation be restored once conduit repairs are complete? Is the conduit located in basement/crawl space under the concourse?
    Answer:   Four drawings of the Aircraft Fueling System (E12.07, E12.08, E12.09, and E12.10) have been uploaded for reference. They can be found as “Miscellaneous 5” on the FlyDenver project page (http://business.flydenver.com/bizops/bids.asp) for this project. Per previous investigation, a mandrel was previously pulled between the pit and the junction box located in the basement of the concourse and was pulled without issue. The same mandrel was unable to be pulled from this junction box to the EFSO room. This blockage is assumed to be in an exposed conduit in the basement and restoration would not be needed. See reference drawing E12.08 in the “Miscellaneous 5” link.
Question Number  2:   Sheet C-116, Demolition. Detail 1 directs contractor to investigate conduit under EFSO Room and make minor repair as needed. Is the conduit located in the basement/crawlspace of Concourse B? Is excavation required to repair the conduit? What detail/method should be used for backfilling this location if required?
    Answer:   Per previous investigation, a mandrel was previously pulled between the pit and EFSO room. The mandrel was able to be pulled until the rigid connector below the EFSO room. This blockage is assumed to be in an exposed conduit in the basement and restoration would not be needed. See reference drawing E12.07 in the “Miscellaneous 5” link.
Question Number  3:   Contract No. specified on the Schedule of Prices and Quantities (201627662) does not match the Contract No. listed on rest of the Part 1 Project Requirements (201846270). Please advise.
    Answer:   The Schedule of Prices and Quantities has been updated to show #201846270, which is the correct project number for this opportunity. Please see Addendum 2.
Question Number  4:   Specification 013210 “Schedule” is missing from the Technical Specifications. Please advise.
    Answer:   Specification No. 013210 “Schedule” has been included with Addendum No. 2.
Question Number  5:   Schedule of Prices and Quantities has multiple Bid Items with blank quantities. The question was asked during the pre-bid conference on what the intent was and the Owner’s response was that the quantities were left blank for the Contractor to complete so that the Owner can analyze if there is any missing scope/quantity. The selection of the Apparent Low Bidder will be determined by the Total Base Bid Amount per IB-9 and The Contractor’s payment will be based on the actual quantities of work performed per IB-12. Allowing contractors to propose quantities and still be paid by quantities performed allows significant discrepancy in the competitive bid process. What will ensure is that all bidders include the full & anticipated quantities so that the total base bid amount and basis of award are comparable & include the full scope of the project. We respectfully request that the Owner re-publish the Schedule of Prices and Quantities with Owner’s estimated quantities in order to accurately determine the low bidder.
    Answer:   A revised schedule of prices and quantities has been provided with Addendum No. 2.
Question Number  6:   Page 3 of Schedule of Prices and Quantities: Option Bid Item - Replace Pipe Supports appears redundant to Base Bid Item - Replace Commuter Loading Rack A-1. Please clarify.
    Answer:   Confirmed, please refer to the revised schedule of prices and quantities in Addendum 2.
Question Number  7:   Page 3 of Schedule of Prices and Quantities: Option Bid Item - Repair Allowance and Investigation (EFSO & Basement Rooms) appears integral part of the Base Bid that it should not be considered as Bid Option. Please clarify.
    Answer:   Confirmed, refer to revised schedule of prices and quantities in Addendum 2.
Question Number  8:   Page 3 of Schedule of Prices and Quantities: Option Bid Item - South Cargo Station Duct Bank appears redundant to Bid Option 1 – New ductbank at the South Cargo Fueling Area. Please clarify.
    Answer:   Confirmed, refer to revised schedule of prices and quantities in Addendum 2.
Question Number  9:   Page 3 of Schedule of Prices and Quantities: Option Bid Item - Hauling Excess Material to Yard seems unclear as to which type of material “Excess Material” is referring to. Per Demolition Note 2 on C-100, demolished concrete shall be taken to DEN Recycling Yard and all other waste material be taken to DADS. Please clarify.
    Answer:   Confirmed, refer to revised schedule of prices and quantities in Addendum 2.
Question Number  10:   Per Demolition Note 2 on C-100, the Contractor is responsible for crushing demolished concrete at the rubble site for future use by DEN. However, Recycle Notes on C-101, C- 102, C-103 & C-104 state “crushing and processing of material will be handled by DEN.” Please advise whom is responsible for crushing and processing of material.
    Answer:   Due to the small amount of crushing that will be required, it will be the responsibility of the contractor to get the material to the DEN recycling yard for crushing, and then DEN will do the crushing. The size of the pieces for crushing should be less than two feet and clean.
Question Number  11:   It appears that there is a scale issue on sheet C-122 and correct scale should be 1”=20’.
    Answer:   Scale should be 1” = 20’.
Question Number  12:   No Traffic control is indicated on sheet C-122; please provide.
    Answer:   Refer to sheet C-105 for Traffic Control.
Question Number  13:   No pavement or island sections are provided for the South Cargo Fueling; please provide.
    Answer:   A 2-page drawing of the South Cargo Pavement Sections has been uploaded to the project documents as "Miscellaneous 6".
Question Number  14:   No depths are provided for conduit and fuel line repairs; please provide.
    Answer:   Assume burial depth of 10’-0” for buried fuel lines adjacent to loading rack A-1. Assume burial depth of 6’-6” below top of pavement to top of duct banks/encased conduits (4’-0 pavement and sub base section, 30” soils below that). In unpaved areas assume burial depth of 30” below finished grade to top of duct banks/encased conduits.
Question Number  15:   Item # P-153 is a SY based quantity and if no depths are to be provided for prior mentioned utilities will the owner convert this to a CY based measurement?
    Answer:   The proposed location for this material is loading rack A-1 as indicated on S-501 details 5 and See revised Schedule of Prices and Quantities for CY quantity.
Question Number  16:   Repair Allowance & Investigation should be an owner provided value, hence allowance.
    Answer:   Assume 4 man-days per location for investigation and reporting for 5 locations. Only costs associated with doing the investigation should be included under investigation. All proposed costs associated with the results of the investigation, over and above which has already been identified in the bid package will be handled during the project.
Question Number  17:   Bid Option #1 and #2 are both currently part of the base bid and are not treated as independent alternates; is this your intention?
    Answer:   The revised Schedule of Prices and Quantities shows them as being bid separately. See Addendum #3.
Question Number  18:   Per IB-31 Invoicing “The textura fee shall be included as a line item in the Contractor’s bid with no markup.” There is no place to include this in the current bid schedule, please provide one.
    Answer:   The revised Schedule of Prices and Quantities now shows the Textura fee as being bid separately. Please see Addendum 3.
Question Number  19:   No flaggers are indicated along the haul routes at taxiway crossings. Will they be required?
    Answer:   Provide Flaggers along the haul routes at taxiway crossings as needed for hauling materials.
Question Number  20:   VTC size indicated on page C-110 does not match with the 50’x20’ size indicated on sheet C-112 detail SM-4. Which one takes precedent?
    Answer:   The Detail takes precedence.
Question Number  21:   No scale is provided on sheet C-115. It appears to be a 1”=20’ scale; is this correct?
    Answer:   Yes, the scale for this plan should be 1” = 20’.
Question Number  22:   Are lighted candlesticks assumed to be 1 per called out location as indicated on sheet C-116?
    Answer:   DEN follows the barricade lights guidelines specified in Advisory Circular 150/5370-2F Operational Safety on.
Question Number  23:   Is the blast fence indicated on Demolition and Phase Barricades sheets to be set and removed by the contractor?
    Answer:   (Response pending)
Question Number  24:   Will P-153 be acceptable instead of CTS (cement treated subgrade) for the full width of Panel Replacement?
    Answer:   No.
Question Number  25:   Bid Option Dwg X-XXX South Cargo Fueling Station Duct Bank appears to be a duplicate of Bid Option 1 New Duct Bank at the South Cargo Fueling Station. Please revise bid schedule.
    Answer:   The Schedule of Quantities and Prices has been updated. Please see Addendum 3.
Question Number  26:   The meeting minute distributed during the pre-bid conference states that the bids will be received no later than 2:00 PM on April 17, 2019. However, the Addendum 1 Part 1 states that the bids will be due no later than 1:00 PM on April 17, 2019. Please clarify.
    Answer:   Addendum 1 was correct; however, the bid opening will be delayed to Friday, April 26, 2018, at 2:00 p.m. Please see Addendum 3.
Question Number  27:   IB-31 states that the Textura fee shall be included as a line item in the Contractor’s bid with no mark up. However, the current bid form does not have a line item for Textura fee. Please advise.
    Answer:   The revised Schedule of Prices and Quantities now shows the Textura fee as being bid separately. Please see Addendum 3.
Question Number  28:   Is Commercial Construction Permit required for the project?
    Answer:   No.
Question Number  29:   Please provide the manufacturer and name of the existing HMI software at the Fuel Storage Facility.
    Answer:   The existing Fuel Facility PLCs are Control Technology Inc. 2500-300 units. HMI software is Workshop 505/CTU PLC Programming Software produced by FasTrak Softworks, Inc.
Question Number  30:   Specification 283801.F.3 states the EFSO operator interface software shall be Intellution or Wonderware. There is no specification for operator interface hardware. Is an operator interface required at each EFSO control panel? If so, what model and manufacturer is acceptable?
    Answer:   Operator Interface Hardware shall be PanelView Plus 6 1500 and shall have options as described in the updated EFSO System Specification provided with this response. Operator Interface Hardware shall be supplied at each PLC location.
Question Number  31:   In light of this addendum and the additional questions that will results, can the deadline for questions to be submitted be extended to allow for any questions to be asked, and can the bid date be extended to allow for proper scope clarification?
    Answer:   The bid opening will be delayed to Friday, April 26, 2018, at 2:00 p.m. Please see Addendum 3.
Question Number  32:   Per Project Manual page 75 II. Additional Coverage – Excess Umbrella Liability. What is the definition of “Controlled Area” and “Non- Controlled Area”? (Requester’s company) is a subcontractor, not an on-site installing contractor
    Answer:   For the purposes of defining the insurance requirements, “Controlled Area” shall be defined as any area at the airport (particularly the airfield) which must be accessed through a security checkpoint of any kind. This is true especially of unescorted vehicles driving on the airfield. “Non-Controlled Area” is any area that can be accessed on Airport property that is not accessed through a security checkpoint. Any company that will be driving as a part of this project, whether prime contractor or subcontractor, will be required to carry insurance on their drivers to meet this requirement.
Question Number  33:   Can you please provide the Estimated Project Value or an Engineer’s Estimate for the Emergency Fuel Shutoff System (EFSO) Project.
    Answer:   The estimated project cost range was listed on the Forecast page and indicates that range.
Question Number  34:   Detail 6 on Sheet C-121 illustrates the panel replacement section for the conduit repairs. The detail is unclear on what depth CLSM is to be filled to. Is CLSM required to be filled to the bottom of PCCP? Please advise.
    Answer:   For bid purposes, assume that conduit is located 30” below the bottom of the select fill indicated in the referenced detail.
Question Number  35:   Detail for pavement restoration on South Cargo Fueling Station (existing & proposed) is missing. Please provide the details.
    Answer:   A two-page drawing of the South Cargo Pavement Sections has been uploaded to the project documents as "Miscellaneous 6".
Question Number  36:   The attached bid schedule replaces the previous in its entirety, however, it appears that it includes only Concourse A and the Commuter Loading Rack. On page 3 there is a header for Concourse B but no bid items for Concourse B, and there also are no bid items for Concourse C, South Cargo Fueling Station, United Maintenance Bays, and the Fuel Farm.
    Answer:   The corrected quantities have been updated on a new Schedule of Quantities and Prices. See Addendum 3.
Question Number  37:   In the Bid Schedule, there are bid items that reference Concourse B & C drawings.
    Answer:   The Schedule of Quantities and Prices has been updated. See Addendum 3.
Question Number  38:   There appear to be large quantity discrepancies in: Commuter Loading Rack A1, Soil Removal and Compaction; Remove Concrete Pavement – Reinforced (Full Depth); and Install Reinforced (Full Depth) PCC Pavement and Joint Sealants.
    Answer:   The Schedule of Quantities and Prices has been updated. See Addendum 3.
Question Number  39:   Dwg. E-510 – Are the Omega FPT-3000 Flow Sensors required? They are not shown in the PLC IO Lists on E-701 nor Cable Schedule on E-702. If required, who is to supply?
    Answer:   The Omega FPT-3000 flow sensors are required and are to be provided and installed at the control valves by this contractor. The flow sensors provide the feedback to the pressure differential switches via stainless steel tubing as shown on E-510. The flow sensors work in conjunction with the pressure differential switches and provide a purely mechanical function are not included on the I/O list or cable schedule. This contractor is also to provide and install the pressure differential switches and all required tubing, conduit, wiring and mounting as indicated on Detail 1 of Drawing E-510 and the associated plan drawings. Notes 1 and 2 of the table on drawing E-510 have been modified to clarify these furnish and install requirements. See Addendum 3
Question Number  40:   Dwg. E-510 – Who is supplying the Ashcroft DP Switches?
    Answer:   Ashcroft DP Switches are to be provided by this contractor. This is noted on drawing E-401 through E-405 and notes on E-510 have been modified for clarification.
Question Number  41:   Dwg. E-701 and E-702 – Qty.8 Valve Pit Sump HL Switches are shown on the IO List and Cable Schedule. Are these existing or new. If new, is there a specification?
    Answer:   Valve Pit Sump HL Switches are existing.
Question Number  42:   Specification 283801-1.2.d. – Do the Panels require a UL508A certification or is it acceptable to have UL listed components supplied in a non UL 508A certified Panel?
    Answer:   Panel shall be designed, constructed and UL listed to UL508A by a UL 508A capable panel shop.
Question Number  43:   Specification 283801-2.2.A.1. – The EFSO Panels appear to be in indoor areas as shown on the drawings. The referenced specification indicates to supply NEMA 4X stainless steel Panels. Are NEMA 12 Panels acceptable?
    Answer:   NEMA 12 Panels are acceptable alternates when installed in indoor environments.
Question Number  44:   The Schedule of Prices and Quantities issued on Addendum #2 has items for General Requirements and Concourse A only. Please consider revising the Schedule of Prices and Quantities to include rest of the scope of work (Concourse B, Concourse C, United Airlines Maintenance Base, South Cargo, & Fuel Farm.)
    Answer:   The Schedule of Quantities and Prices has been updated. See Addendum 3.