697DCK-24-R-00361 Amendment 0004.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

5. PROJECT NO. (If applicable)2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ.NO.

PAGE OF PAGES

6. ISSUED BY CODE 7. ADMINISTERED BY (If other than Item 6)

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

CODE

9A. AMENDMENT OF SOLICITATION NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

Items 8 and 15, and returning is extended, is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required.)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

(x) A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO THE AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation date, etc.) SET FORTH IN ITEM 14.

E. IMPORTANT: Contractor is not, is required to sign this document and return

ORDER NO. IN ITEM 10A.

1 17

0004 07/09/2024

FEDERAL AVIATION ADMINISTRATION

AAQ-500 - REGIONAL ACQUISITIONS

2200 S. 216TH STREET

DES MOINES WA 98198-6547

AAQ530ANM-AFN

x

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

separate letter or telegram which includes a reference to the solicitation and amendment number. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT

THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By ___________ 1 x x

697DCK-24-R-00361

1 copies to the issuing office.

05/07/2024

(x)

The purpose of Amendment 0004 is to post the Questions received and their applicable answers. See also Attachment 1 REV. 1 - Statement of Work to replace Attachment 1 -

Statement of Work from original RFO.

The offer deadline date is being extended to:

Wednesday, July 24, 2024, 5:00PM MT

No other changes.

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. CONTRACT AUTHORITY 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

Cynthia A. Tjelde

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

Solicitation No. 697DCK-24-R-00361 ZDV Underground Utilities Project - Questions & Answers

1) Statement of Work, Section 4, contains some speci ic language as to the scope of the parking lot work, but it is unknown if it is all-encompassing or current. For instance, 4.c. states to repave the west section of the parking lot. Google Earth imagery indicates it was repaved a year ago. Is this still a requirement?

a. Yes – Repaving the West lot is a requirement.

2) Con irm if utilities should be replaced based on investigation results per Statement of Work item 3.c. or if all (100%) of utilities should be replaced per Statement of Work item 3.a “Replace all systems devices (i.e., piping).

a. Utilities are to be replaced based on investigation results. See revised SOW 3.c (Attachment 1

REV. 1).

3) Provide additional as-built drawings for Statement of Work item 4 to include details of existing pavement conditions, striping layout, and existing bollard layout.

a. No as-built drawings are available. Previous paving work did not meet contract requirements (i.e., compaction was not met, ponding, cracks in new asphalt, etc.). The FAA intends to bring the asphalt into compliance.

4) Provide approximate bidding quantities for gas, storm, sanitary, domestic water, and ire water loop lines to be replaced.

a. Quantities listed are approximate and are to be used for bidding purposes:

i. Gas: 2700 LF

ii. Storm: 3800 LF

iii. Sanitary Sewer: 1750 LF

iv. Domestic & Fire Water: 9000 LF

5) Will temporary utilities be required for continuous facility operations?

a. Yes

6) Are there timelines for how long utilities can be shut down?

a. No loss of utilities is acceptable. Temporary utilities are required for any shut down.

7) Do the Superintendent, SSHO, and QC Manager need to be three (3) separate individuals? Or can one person perform three (3) roles?

a. See RFO, page 72, under Criteria #3, NOTE.

8) Can the period of performance be extended after award once the material/equipment lead times are con irmed due to current market conditions for the equipment for this project?

a. Yes, the period of performance will be extended to include lead times for materials and will be based on Contractor’s inal approved schedule.

9) Will existing capacity of sanitary sewer be required to verify cleansing velocity?

a. Yes, it will be determined by the Civil engineer.

10) Will survey and/or GPRS be required outside of ZDV property to locate utilities?

a. Only work up to the irst point of connection on FAA property.

11) Do abandoned utilities require removal or abandon in place?

a. The FAA’s intent is to remove all abandoned piping. The section of sewer pipe located under the northeast side of the power services building (PSB) will need to be abandoned due to its location under the PSB, however, all other sections will be removed.

12) Provide as-builts for the facility.

a. Topo drawings and construction drawings for the recent Major Mechanical project have been provided. Further as-builts for Underground Utilities are not available.

13) Is there a water hydraulic model for the existing water lines?

a. No.

14) The conditions assessment (CA) report covers both the inside and outside of the buildings. Con irm this project is only for outside of building, i.e., ive (5) feet from the facility.

a. Underground utility work is outside. However, the piping should be replaced up to the irst connection point inside the facility with the exception of the ire water line which will be replaced just past the system double check valves inside.

15) In the conditions assessment (CA) report, item 2.3.4: Admin Wing Basement Boiler Room B116 reports signi icant water damage and the manhole located near the Southeast corner is likely the source. It is recommended to seal the manhole if the grounding cable is not needed. Is the recommendation required for this project and the General Contractor (GC) required to investigate or follow the recommendations?

a. No, the recommended work is not included in the scope of the project.

16) Provide what the existing material is for the bedding and back ill for the storm water.

a. Assume 3/4” minus gravel bedding, however, existing conditions are unknown.

17) Provide what depth is required for back ill materials (i.e., bedding, back ill to haunches, native, etc.)

a. This is a design build project. This will be determined during design per whatever standards, codes, etc., are required.

18) Provide subbase and asphalt replacement thicknesses and compaction for full replacement in utility trench locations.

a. This is a design build project. This will be determined during design per whatever standards, codes, etc., are required.

19) Identify all manhole replacement locations,

a. This is a design build project. This will be determined during design per whatever standards, codes, etc., are required.

20) Is it anticipated that all sewer is to be replaced or only sections identi ied as problematic?

a. All sewer installed prior to the year 1990 and/or with a remaining service life of less than 20 years is to be replaced. See Attachment 1 REV. 1 - Statement of Work.

21) At the site visit, it was noted numerous areas on the concrete staircase, loading dock, entrances, walkways, etc., are in poor condition and need to be repaired / replaced. For bidding purposes, please provide the locations at which site concrete shall be reconstructed for this project.

a. The concrete staircase, loading dock, and entrances are not included in this project. The concrete sidewalk on the Northeast side of the Power Services building must be replaced during grade restoration. The concrete islands in the East parking lot must be demolished.

22) Will a tax exemption certi icate be provided for this project?

a. No, the contractor is responsible for all taxes.

23) Con irm if the general contractor (GC) will be liable to pay all state, county, and federal sales tax for this project.

a. Contractor is liable to pay all state, county, and federal sales taxes for this project.

24) At the site visit, it was observed the only access to the ARTCC is through the gate/visitor center. Is the parking lot required to remain accessible for the building occupants thus required to phase the project to accommodate accessibility for the building users?

a. Yes – the building must remain accessible at all times. Phasing will be required.

25) Is it anticipated that all gas lines are to be replaced or only sections identi ied as problematic?

a. All gas installed prior to the year 1990 and/or with a remaining service life of less than 20 years is to be replaced. See Attachment 1 REV. 1 - Statement of Work.

26) Will the general contractor be allowed to use onsite power during construction?

a. Yes

27) If the GC is allowed to use onsite power, will the GC be required to meter power usage?

a. No

28) Will the GC be allowed to use onsite water during construction?

a. Yes

29) If the GC is allowed to use onsite water, will the GC be required to meter the water usage?

a. Yes – meters are required for water use from hydrants. Hose bibs will not require metering.

30) The Design-Build Statement of Work dated April 2024, section 3.d. states comm, electrical raceways, duct banks, conductors, fuel tanks, and fuel piping are excluded, however, it was observed existing parking lot lighting in the ZDV facility parking lot. Con irm all electrical, Comm, and fuel utility work will be excluded from this project.

a. All electrical, comm and fuel utility work is excluded from this project.

31) The Design-Build Statement of Work (SOW), Section D, Design Submittal Requirements section 1.b lists Basic Civil, Structural, Mechanical, Electrical, etc. design drawings. The SOW states the replacement of exterior underground site utilities, refurbish limited facility parking areas and sidewalks, utility investigations, guidance for FAA project design requirements. The SOW is geared towards civil design requirements. Clarify if additional design disciplines will be required for the design submittal requirements.

a. Underground utilities projects at other FAA sites have typically required civil, electrical, and mechanical disciplines. Any discipline necessary to complete a full design will be required.

32) Amendment 0001 revised the bid submission date to Monday, June 17th, by 5:00 pm. It has been historically noted that suppliers are reluctant to provide inal pricing until the day the bid is due to the subcontractors and the necessary obligations for the beginning of the week duties the supplier may have thus delaying subcontractors to inalize their pricing for the bid. Would FAA consider revising the bid submission date to another day (Tues – Fri)?

a. Due to the number of questions received, the offer deadline date will be extended to allow additional time for answering questions and for contractors to consider answers to questions raised.

33) The current construction industry is very busy and has been known to cause delays that relate to late bid submissions or no responses to bids due to necessary obligations to ful ill. To facilitate positive bid responses for this acquisition, will the FAA consider extending the bid submission deadline two weeks after all questions are answered to allow enough time for subcontractors to appropriately review any updated project information and answers to the submitted questions?

a. Additional time (at least two weeks) will be provided after questions & answers are posted via amendment to give contractors suf icient time to consider answers.

34) The West and East parking lot area was noted to be in good condition at the site visit, in addition, noted in the condition assessment (CA) report, the parking lot was undergoing a renovation during the site investigation. Provide clari ication on the refurbishment of the facility’s parking areas, i.e., seal & coat only, full depth asphalt removal & replacement, asphalt overlay, etc.

a. See Attachment 1 REV. 1 – Statement of Work for clari ication.

35) Has a Geotechnical report been performed for this solicitation? If so, provide a copy.

a. No geotechnical report has been done. A topo survey was made available.

36) If a Geotechnical report has not been performed for this project, will the Geotechnical report be required for this solicitation?

a. No, a geotechnical report is not required.

37) Will new parking lot signage, i.e., handicap signs, stop signs, etc., be required?

a. Yes

38) It was noted at the site visit that the sidewalks were non-compliant with ADA accessible sidewalks. Will the contractor be required to add ADA compliant sidewalks or replace sidewalks in kind?

a. Any new sidewalk will need to be ADA compliant.

39) The childcare center is not part of this project; however, it was noted at the site visit that the retention pond north of the childcare center is deteriorating and needs to be replaced. Clarify if the outlet for the stormwater located north of the childcare center is to be replaced.

a. Stormwater outlet at the childcare center is not included.

40) Provide the newly paved western & eastern parking lot drawings/as-builts for reference.

a. No drawings/as-builts are being provided because previous work was de icient and is not being used for reference.

41) Will the replacement of the handicap ramps be required for this project?

a. If any ramps are impacted by this project, they will require replacement.

42) Will the contractor be required to replace all gas and water meters?

a. Replace all gas and water meters that are removed as part of the project.

43) Will the contractor be required to only replace gas and water meters needing to be replaced? If so, clarify which gas and water meters are to be replaced.

a. Replace all gas and water meters that are removed as part of the project.

44) Leaking and staining was observed in the CA report. Is there any action required to correct this?

a. No building work is part of the scope of this project.

45) CA indicated need to replace all existing steel pipe that provides domestic water service. The location and extent is unclear. Provide location and expected replacement of these water lines.

a. All outside waterlines installed prior to the year 1990 and/or with a remaining service life of less than 20 years is to be replaced. See revised Attachment 1 REV. 1 - Statement of Work and Facility Condition Assessment Report (CA).

46) CA recommends replacement of a steel domestic waterlines and all remaining carbon steel and galvanized steel piping in the industrial water system. Does this extend outside the buildings?

a. Underground utility work is outside. However, the piping should be replaced up to the irst connection point inside the facility with the exception of the ire water line which will be replaced just past the system double check valves inside.

47) FAA staff report no known issues with outside water supply system or laterals supplying the site, therefore, only material age would govern replacement. Con irm.

a. All outside waterlines installed prior to the year 1990 and/or with a remaining service life of less than 20 years is to be replaced. See Attachment 1 REV. 1 – Statement of Work.

48) Line 16 on page 132 of the facility condition assessment (page 136 of the attachment 4) shows that a 24” pipe should be increased to 30” but has no capacity issues indicated. Clarify the required location and required size of the pipe.

a. Location and size of piping will be determined during the design phase of the design-build process.

49) Con irm all ire protection issues are within the riser pumps and on inside of building and no action to the ire water system is needed outside the building.

a. No, all ire waterline work is outside, however, the ire piping should be replaced just past the system double check valves inside the building. Per revised Statement of Work, all ire waterlines installed prior to the year 1990 and/or with a remaining service life of less than 20 years is to be replaced.

50) CA indicates storm drain lines in a few instances connected without structures to provide access typical with storm drain installation. Does the ARTCC want structures installed at these locations? If so, where?

a. The FAA’s intent is to have all piping installed per code. Access points will be determined during design, as required by code.

51) CA (condition assessment) report page 755 of Attachment 4 states that 4 of the 5 ire hydrants were established in 2003. The SOW speci ically states the replacement of utility systems prior to the year 2000. Clarify if the ire hydrants installed after 2000 are in good condition and are not to be replaced.

a. The SOW has been updated and all utilities installed prior to the year 1990 and/or with a remaining service life of less than 20 years is to be replaced. Hydrants are included in the terms “all utilities”.

52) Will FAA allow dual-hatted positions for the onsite Quality Control Manager & Site Safety Health Of icer management positions?

a. See RFO, page 72, under Criteria #3. NOTE.

53) The SOW dated April 2024, page 5 of 8, item 4.f states “install bollards around select equipment de ined by the COR. For bidding purposes, provide the quantity of bollards to be installed.

a. 12 Bollards total – 4 around the security camera in the North parking lot. 4 around the critical transformer behind the Power Services Building. 4 at the exit of the building on the East side leading to the Guard House.

54) Clarify if the bollards identi ied by the COR per SOW, page 5 of 8, item 4.f are existing and to be replaced, or, new bollards to be installed.

a. Four (4) bollards will be replaced and eight (8) new bollards will be installed.

55) The CA, page 124, recommendation for the west parking lot area to be in good condition and recently replaced. The SOW dated April 2024, page 5 of 8, item. 4.c. states the west section of the parking lot to be repaved. Clarify if the west section of the parking lot shall be repaved and the extent of the replacement, i.e., mill/overlay, seal/coat, full depth replacement of subbase/asphalt, etc.

a. Full-depth repaving will occur throughout the West Parking Lot to remediate subbase and drainage issues.

56) The design deliverable schedule outlined in the SOW dated April 2024, page 6 of 8, item F, items 1-6 equate to a 11-month design schedule. If the project was to be awarded after the 60-day hold stated on the SF-1442, the construction schedule would begin the summer of FY2025, thus losing good weather construction days. The primary SOW will be utility replacement and pavement refurbishment. Pavement work is seasonally available from April – October and utility replacement is typically performed when the utility shutdowns have least impact on building users and “good weather months”. Considering the constructability good-weather day schedule, would the FAA allow an accelerated design schedule for the design deliverable by eliminating a design deliverable (survey, 10%, 75%, IFC) or shorten durations design submittal reviews, i.e., 14 calendar days in lieu of 30 days?

a. No, an accelerated design schedule will not be considered for this project. The construction schedule will be determined after 100% design is approved. There will not be any time of “least impact” on building users because utility shutdowns will require temporary services. See SOW for design timelines.

57) The childcare center (Junior Jets) is out of scope, however, there is a concrete pavement in the north entry that impedes into the childcare center. Clarify the demarcation of the concrete pavement replacement and con irm the square footage of the area outlined in the CA report on page 124.

a. This section of pavement is not included in this scope of work.

58) Provide clari ication for the mill and overlay areas as show on Appendix K2 – Recommended Repair Areas, i.e., does the mill & overlay require scarifying the grading below? Shall the grading below be removed and recompacted? The additional clari ication is pertinent to providing the appropriate improvement for the newly milled / overlayed asphalt.

a. Grading below the milled asphalt must be inspected and pass density testing. Any areas that do not pass density testing or will result in poor asphalt conditions must be removed and recompacted.

b. As mentioned in page 10 of the Kimley Horn report, reconstruction strategy (full depth replacement) requires replacement or reworking of underlying subgrade or aggregate base materials. Work would include scarifying and possibly importing new soil if the existing subgrade is determined to be unsuitable for proper compaction. For mill and overlay repairs, fully excavate only localized areas where full-depth cracking and severer damage is evident.

Otherwise, mill 2-inches minimum and install new overlays as needed to proper drainage grades.

59) Clarify for the mill & overlay to be replaced shall include the subbase removal and replacement.

a. Grading below the milled asphalt must be inspected and pass density testing. Any areas that do not pass density testing or will result in poor asphalt conditions must be removed and recompacted.

b. Only localized areas exhibiting structural failure (i.e., full dept cracking or other major damage) will require subbase removal and replacement. Also see answer to question 58 above.

60) If the subbase material underneath the asphalt is to be replaced, please provide the material and material depths to be replaced.

a. For full depth repairs perform the following:

i. 4” asphalt (may vary increase in some places to achieve drainage slopes)

ii. 4” thick of ¾"-minus well-graded and road base

iii. 6” excavated soil removed and re-compacted to 95% dry density (ASTM D698 or

D6938)

61) The existing parking lot is noted to be 3” in areas of the parking lot. It is very dif icult to overlay & mill 3” asphalt. Con irm the subbase materials is to be replaced in addition to the overlay and milling of the asphalt.

a. Subbase materials are to be fully removed where full depth repair and excavation is required, such as the west parking lot and where utility lines are being replaced. For pricing purposes, assume no other areas require subbase material removal. Refer to answer to Question #60 for material types and depth of each layer.

62) SOW III.C.3a requires replacement of “…all system devices (i.e., piping, valves, cleanouts, manholes, hydrants, etc.).” SOW III.C.3c suggests replacement only of utilities “installed prior to the year 2000 and/or with a remaining service life of less than 20 years.” The Jacobs report provides limited recommendations for replacement, for example, undersized storm sewer. Can FAA provide year of installation for water, sanitary, storm, ire, and natural gas systems, and/or provide FAA intention regarding the replacement of portions versus replacement of the entirety of on-site underground utility runs?

a. Condition assessment report has most, if not all, year of installation for exterior underground utilities. If the year for any is not given, assume replacement is needed. See Attachment 1 REV. 1 Statement of Work (changed to utilities installed prior to 1990…).

63) No geotechnical investigations were performed according to the provided Jacobs report. SOW III.D.2.a bullets (4) and (5) reference soils reports and asphalt core studies. Can FAA provide existing reports or is the Contractor responsible to conduct these studies?

a. No geotechnical report is available.

64) Can the contractor assume the eastern third of the property (new paving with new striping) drains adequately and requires only seal coating and re-striping per Jacobs reports?

a. If referencing the eastern lot near the main facility the only drainage scope is to remove the concrete islands and restore proper stormwater drainage. If referencing the eastern lot near the childcare facility no drainage scope is required or expected. Seal coating and re-striping is required in areas that will not be disturbed by the underground utility work. All areas affected by the underground utility work will require repaving.

65) FAA’s SOW III.C.4 bullet (c) requires repaving the western parking area, even though that is less than one year old pavement and striping. Con irm this is correct.

a. This is correct. Repave the West parking lot.

66) Since there was no interior site walk, please provide details on the “…limited outdated interior lines…” to be included in the work.

a. Interior work is limited to the irst point of connection on all underground utilities. The only exception is for the ire line which will replace the piping assembly immediately inside the building.

67) Is the gas meter location inside the building or outside?

a. Gas meter and regulator are outside and adjacent to the administration wing in a CMU enclosure.

68) Is the water meter location inside the building or outside?

a. Domestic water line meters are inside the building.

69) Can FAA provide the utility videography performed by Jacobs for our review?

a. No videography available.

70) What other site electronic iles are available besides the two Wolpert drawings included in the RFP/O?

The SOW references Attachment 3 “REF Drawings.” Please provide any Autocad, GIS, or other existing electronic iles so we can evaluate their adequacy and completeness.

a. Additional electronic iles are not available. Reference drawings are attached to the RFP. A CAD drawing is available by emailing cindi.tjelde@faa.gov and requesting it. As stated in the RFO announcement, SAM.gov would not allow CAD drawings to be uploaded.

71) De ine “select equipment” requiring bollards, per SOW III.C.4.f.

a. See answer to question #53.

72) It appears from the Survey that the ire lines are part of the potable water system – please con irm. Lines labeled “F” show to be Fiber per the survey legend.

a. The ire and domestic water lines are fed from the same municipal water source.

73) What is the available water system pressure and volume?

a. Hydrant low for ire suppression is available in the facility condition assessment report.

74) Which portions of the parking area and/or sidewalks are anticipated to be re-graded? Please provide a graphic, if possible.

a. Asphalt full-depth repaving will occur in the immediate area where utility lines are to be replaced and throughout the West Parking Lot to remediate subbase and drainage issues.

Asphalt patching will occur in the East Parking Lot where the concrete islands are to be removed.

The concrete sidewalk on the Northeast side of the Power Services building must be replaced during grade restoration. The concrete islands in the East parking lot must be demolished.

75) Section III.D.3.e notes a “Final Commissioning Plan”. Which components is this related to?

a. Section deleted. No commissioning work anticipated.

76) Section III.D.4.b indicated Structural Engineering drawings. What scope is required for Structural?

a. Section revised. No structural engineering work anticipated.

77) SOW Section 3.a states “replace all system devices (i.e., piping, valves, cleanouts, manholes, hydrants, etc.)”. Con irm that the Government’s intent is to replace all existing underground utilities noted in 3.c regardless of age or remaining life span.

a. All utilities installed prior to the year 1990 and/or with a remaining service life of less than 20 years to be replaced. See Attachment 1 REV. 1 Statement of Work.

78) SOW Section 3.c. states “based on the results of utility investigation replace the following utility systems installed prior to the year 2000 and/or with a remaining service life of less than 20 years”. Con irm if the requirement is to replace all systems that meet both criteria, or, only the systems that meet one of these criteria. Identify in the scoping documents where this information is listed if all system devices are not to be replaced as stated in SOW Section 3.a.

a. Replace all utility systems installed prior to 1990. In addition, any utility installed AFTER 1990 with less than 20 years of remaining service left will also require replacement.

79) If the government intends to replace all system devices of the utility systems identi ied in section 3.c, where should the contractor end their work on the public side of the utilities? At the property line or at the connections in the right-of-way?

a. At the FAA property line.

80) SOW Section 3.b states “replace the system from a point-of-connection (POC) within the building (if accessible and possible) or at a feasible location nearest the building entrance (where interior POC is not possible). Coordinate with ZDV to determine the POC to ensure limited outdated interior lines are included in the work as recommended by the utility investigation.” Clarify POC for all utility systems identi ied for each building on the site.

a. First point of connection within the building envelope, except for the ire water system which shall be replaced to the irst connection past the irst double check valve.

81) Is it expected that all systems will be replaced with exact same size and capacity, or, should an analysis be completed as part of the investigative phase to determine any resizing needs to meet current codes? For example, the Facility Condition Assessments from March 2024 indicate some of the storm water inlets and catch basins are undersized for a 10-year event.

a. Perform analysis to verify proper sizing during the design phase.

82) If only the utilities meeting the criteria in 3.c are to be replaced as part of this project, is it the Government’s intent to only award the utility investigation scope currently? It appears that insuf icient information exists in the solicitation and the reference facility condition assessment to fully determine the utility replacement needs based on the criteria in section 3.c (utility age and remaining design life) at this time. No information is provided on the current condition or date of installation of the site underground water mains or laterals or the underground natural gas lines.

a. A full investigation into the status of the existing utilities is part of this project, but for offer pricing purposes, age & remaining service life are being used as a basis. See answer to question 62 for additional clari ication.

83) SOW section 4.a and 4.b state “investigate the existing pavement conditions, including the subbase, drainage, settling, heaving, subsurface water, etc.” and “include design solutions based on the investigation indings and existing conditions, including replacement of the pavement subbase, subsurface drainage, grading runoff detention, etc.” respectively. Con irm the Government’s intent/expectation on overall asphalt removal, patch, and replacement. Results of section 4.a and 4.b will inform the contractor of the overall scope for asphalt removal and replacement so how should the asphalt repaving be bid on? Based on the anticipated utility and site improvements, a large portion of the site will need to be cut, patched, or repaved. Should the contractor assume the full-depth repaving of the entire site?

a. Full-depth repaving will occur in the immediate area where utility lines are to be replaced and throughout the West Parking Lot to remediate subbase and drainage issues. Patching will occur in the East Parking Lot where the concrete islands are to be removed.

84) Con irm the number of concrete islands to be removed and replaced at grade onsite per SOW Section 4.d.

The provided topographic survey from Woolpert dated 9/3/2020 shows six existing islands in the eastern parking lot. The survey provided in the Jacobs Facility Condition Assessment dated March 2024 shows three islands. Please advise.

a. All concrete islands to be removed.

85) SOW section 4.e states “restore the grade and replace the sidewalk in the settling section on the Northeast side of the Power Services building”. Clarify which building is the Power Services Building.

a. The PSB is the stand alone building on the South side of the facility. It runs East to West.

86) SOW section 4.f states “install bollards around the select equipment as de ined by the COR”. Clarify intended reference document when referring to COR.

a. Contracting Of icer’s Representative = COR. See also answer to questions #53 and #54.

87) During the site walk, it was indicated there will be a preliminary plan set coming out that we’ll be able to prepare a good budget proposal from. Is that still the case?

a. All documents that will be developed have been provided.

88) Is sheet ZDV-1401893-M-105 for reference only or is this to be used for the basis of design?

a. Reference only.

89) The bid notation lists bollards, however, I do not see any references to bollards or gates in the bid documents. Can you con irm that there will be bollards or gates installed for this project and if so, where are they listed in the bid documents?

a. See answers to questions #53 and #54 regarding bollards. No gates are required.

90) Is the following acceptable for asphalt concrete mix: All asphalt concrete is based on providing a Colorado, AASHTO, ASTM, and/or MGPEC Super pave mix. Mix type(s) planned are a grading S or SXmixes using PG 64-22 or PG 58-28 liquid with up to 30% RAP.

a. Acceptable construction products and materials for the project will be determined during the design phase. All products, materials and methods must comply with Federal, State and Local Codes.

91) Will a water source be provided for contractor construction use?

a. Water is available.

92) Are all drawings labeled “major mechanical modernization” only for reference with building the design or are they applicable for actual construction scopes?

a. Reference only.

93) The TOPO provided does not indicate any domestic water or ire suppression water routing. Could we any plans or TOPO’s that indicate the location of these lines?

a. TOPO drawing shows domestic water lines. See answer to question 4 for estimated linear length of pipes for pricing purposes.

94) The scope mentions, “replace all system devices (i.e., piping, valves, cleanouts, manholes, hydrants, etc.).

Provide new system devices, including any additional devices, in accordance with building codes and best practice.” There is no indication of quantities for each mentioned item. Should we estimate for two extra of each item we replace?

a. No – Provide quantities to meet design requirements.

95) Does this project have liquidated damages?

a. No liquidated damage on this project.

96) Does the FAA have any points of contact for the existing public utilities for coordination?

a. City of Longmont

97) According to the FAA-STD-002H document, design is to be done in CAD. Is this correct or is Revit acceptable?

a. AutoCAD (or .dwg ile type) is required. Revit will not be allowed.

98) Will it be acceptable for all work to occur during normal working hours, or will any work need to occur outside of normal working hours?

a. Work requiring cutovers will be done outside of working hours (9:00p.m.-5:00a.m.). This will be coordinated with the COR and facility management. Standard work (most of the work required for this project) will be completed during normal working hours (6:00a.m.-4:30p.m).

99) What kind of CMT testing is required, and does the FAA or prime contractor cover the cost of the laboratory?

a. All testing required will be provided and paid for by the contractor.

100) To what point will the natural gas piping need to be replaced? From the meter to the main line, or, from the meter to inside the building?

a. All gas installed prior to the year 1990 and/or with a remaining service life of less than 20 years is to be replaced. This may or may not include the main line as well as from the meter to the irst connection point inside the building. See facility conditions assessment report.

101) Will temporary gas be required for the replacement of the gas system?

a. Yes – the boilers will need a gas supply to provide heating for the building in the winter months (approximately October through May). The gas line also runs to the kitchen and is used by the onsite catering company, so if the work is done during the summer, gas will still need to be provided for the kitchen.

102) Are existing utility lines required to be demolished once new utilities are connected, or, would it be acceptable to abandon these old lines in place?

a. Remove old lines. Abandonment of utilities will be considered on a case-by-case basis, but for pricing purposes, assume abandonment. See answer to question 11.

103) De ine ire watch requirement mentioned in SOW.

a. Generally, follow requirements in NFPA 25, section 15.5, for the need and capabilities of a ire watch during sprinkler system impairments. Fire watch is required in areas that are solely covered by sprinkler systems if impaired for 10 hour or longer in a 24-hour period. This is typically not an issue because we do not have our system out for more than 10 hours.

104) The ZDV Facility Evaluation Draft Report outlined areas of various levels of repair which included crack sealing, isolated cut and patch, mill and overlay, removal and replacement of curb and gutter and removal and replacement of concrete sidewalk. Con irm that Longmont ARTCC has decided to go with full removal and replacement of the parking lot.

a. Full-depth repaving will occur in the immediate area where utility lines are to be replaced and throughout the West Parking Lot to remediate subbase and drainage issues. Patching will occur in the East Parking Lot where the concrete islands are to be removed.

105) SOW states that electrical power is not in the scope of this project. Does the FAA need us to address any of the parking lot lighting while reviewing parking lot designs?

a. No parking lot lighting work is needed.

106) Verify what the expectation is for the asphalt. 1.5” milling is mentioned in the facility assessment report, but other sites have required 2” milling in the past. Please con irm which is required.

a. See #58

107) Con irm the FP piping into the building will only be replaced up to the main shut off valve, assuming a new tap at the main will be needed and a new vault with back low.

a. Fire protection piping will be replaced to the irst connection past the double check valve on the interior of the building.

108) Are we to remove/replace the ire protection service entrance into the building?

a. Fire protection piping will be replaced to the irst connection past the double check valve on the interior of the building.

109) Is there a soils report available for the site?

a. No

110) Provide a site plan showing the location of the de icient ire hydrants that need to be replaced.

a. Please refer to the Topographical Survey by Kimley Horn in the Facility Condition Assessment.

111) Provide a site plan showing the speci ic location of the storm sewer and structures that need to be replaced.

a. Please refer to the Topographical Survey by Kimley Horn in the Facility Condition Assessment.

112) Install bollards around select equipment as de ined by COR. Con irm the area locations and how many bollards are required for each area?

a. See #53

113) Demolish concrete islands in East section of parking lot to achieve proper storm water runoff. Can you provide a site plan that indicates this area?

a. No site plan available. There is only 1 concrete island remaining. It is on the East side of the building and runs North-South.

114) Restore the grade and replace the sidewalk in the settling section on the Northeast side of the Power Services Building. Can you provide a site plan that indicates this area?

a. No site plan available. The sidewalk is on the Northeast side of the Power Service Building between the corner of the building and the entrance door.

115) Demolish concrete islands in East section of parking lot to achieve property storm runoff. Do we need to replace the concrete islands or remove them entirely?

a. Remove only. No replacement.

116) Can we back ill as we go with resident engineer (RE) approval and or recorded footage of section of Storm Drain installed?

a. No, back ill will be completed once all new piping is installed and tested.

117) Provide a site plan showing the speci ic location of the sanitary sewer and structures that need to be replaced.

a. Please refer to the Topographical Survey by Kimley Horn in the Facility Condition Assessment.

118) Provide a site plan showing the speci ication location of the domestic water and structures that need to be replaced.

a. Please refer to the Topographical Survey by Kimley Horn in the Facility Condition Assessment.

119) Provide a site plan showing the speci ic location of the ire water and structures that need to be replaced.

a. Please refer to the Topographical Survey by Kimley Horn in the Facility Condition Assessment.

120) Will the asphalt paving be completed in 2025?

a. It is not likely. Paving will be done based on when the design is complete and when a construction schedule is approved. The contractor is responsible for providing a schedule of phased work that makes sense and takes into consideration lead times for materials and weather.

121) Will the asphalt be indexed?

a. No, however, see contract clause 3.2.4-4 Fixed Price Contracts with Economic Price Adjustment- Labor and Material (Oct 2019) in Section I, page 14, of the RFO. You can ind the full text of this contract clause at https://fast.faa.gov/contractclauses.cfm.

122) Is there petromat under the existing asphalt surface?

a. No – The swale section in the West parking lot has a geotextile grid. It runs the length of the swale and is approximately 10’ wide.

123) Will the utility trenches be illed with a concrete base and the asphalt surface installed on top of that?

a. Trench ill will be determined during design based on applicable codes.

124) What will be done with the cracks prior to surface asphalt installation?

a. Cracks will need to repaired. Repair subbase and pass compaction/density testing before placing asphalt.

125) What asphalt mixes will be required?

a. Asphalt mix will be determined in the design phase based on applicable codes.

126) How many phases will be required?

a. Phases will be determined during design and preconstruction meetings. Building access must be maintained at all times and phases will be coordinated to minimize impact to traf ic low, parking, and access.

127) Will the entire property receive new asphalt pavement, either full depth or mill & overlay?

a. Full-depth repaving will occur in the immediate area where utility lines are to be replaced and throughout the West Parking Lot to remediate subbase and drainage issues. Patching will occur in the East Parking Lot where the concrete islands are to be removed. Any additional paving will be determined during the design.

128) Will security checks and background checks be required?

a. An appropriate number of workers will be badged for this project to ensure contractor has enough coverage to supervise and escort all unbadged workers (visitors). Background checks are required for all badged individuals. Visitors do not require a background check, but daily check in with the guards is required upon arrival and anyone working at the facility is subject to search at any time. Valid U.S. ID required.

129) Will each truck be subject to inspection every time it enters the property?

a. Yes – This will be done at the guards’ discretion.

130) Will security checks be required each time we enter and leave the site?

a. Unbadged employees will check in with the guards at the beginning of every shift and receive a visitor’s badge. If a visitor leaves the site and returns on the same day, they are able to keep their badge. When they return, they will check in with the guards and wait for their badged escort to pick them up for entry at the gate.

131) There is an existing topo from 2024 for the parking lots. We are assuming that a digital copy is available, and we would augment it with our survey of the cooling towers. Con irm this is acceptable.

a. A CAD version of the 2024 Topo survey by Woolpert is available upon request. Email cindi.tjelde@faa.gov for a copy.

132) There are utilities shown on the 2020 topo but they do not extend to the point of connection (POC) so we recommend redoing those and will include in our pricing. Is that acceptable?

a. Replace utilities to the irst POC inside the FAA property line.

133) How far will utilities need to be replaced beyond the parking area.

a. All utilities installed prior to the year 1990 and/or with a remaining service life of less than 20 years are to be replaced. This may or may not include up to the utility tie-ins just beyond the facility fence line.

134) Will pipe capacity need to be analyzed to ensure adequate sizing?

a. Location and size of piping will be determined during the design phase of the design-build process.

135) Redesign utility layout to minimize future operational risk and improve performance. How will the system be reviewed for best performance? What future operational risk do we need to be aware of?

a. Future operational risks will be mitigated by making the underground utilities accessible and separate from other building utilities so that during future repairs, there is less risk of multiple outages or damage to existing systems. For example, don’t run new piping close to existing iber lines to avoid disruptions during future repairs. Use best practice approach during design and installation.

136) Electric, Comm, Fiber, fuel tanks, and fuel are excluded from upgrades however the line marked as gas is not discussed in the exclusion or included in the replacement. Will the gas lines need to be replaced.

a. All gas piping installed prior to the year 1990 and/or with a remaining service life of less than 20 years is to be replaced.