NNG16582073E_Response_to_Industry_Questions_1_to_212_.pdf

WALLOPS AIRFIELD REPAIR PROJECT, COF PHASE 1, IFB NNG16582073E

INDUSTRY QUESTIONS

1. Specification 31 23 00.00 20 Section 3.4.1 Proof Rolling states, “Rutting or pumping of material shall be undercut as directed by the Contracting Officer and replaced with fill and backfill material. Bids shall be based on replacing approximately 10 square yards, with an average depth of 12” at various locations”. Please confirm unstable soil over 10 square yards, directed by the contracting officer for removal, will be viewed as an unforeseen site conditions and subtracted out of optional unit quantities accordingly.

Response: Not necessarily. Refer to Federal Acquisition Regulation Clause 52.236-2

Differing Site Conditions. Further, Contractor is required to provide sufficient evidence and proper notification of unsuitable soil. Subgrade that has been left exposed, saturated, damaged, or deteriorated due to Contractor failure to protect the subgrade per contract will not be deemed as unsuitable soil.

2. Will consideration be given to change normal working hours from 7:00am to 7:00pm?

Response: No, normal working hours are established, any work outside of normal working hours will need to be requested for approval as noted in the specification.

3. Solicitation Section H-Special Contract Requirements states, “Excess excavated material not specified to be reused shall be disposed of at a site designated by the COR.” Please provide

COR designated site for disposal of Hazardous/Contaminated and unsatisfactory soil (Bid

Item 0001B l).

Response: Excess soil shall be disposed of offsite at an approved and permitted location by the Contractor, excess material will become the property of the Contractor. Contaminated soil if encountered must be handled per the contract and disposed legally offsite with copies of the disposal paperwork provided to WFF.

4. Will any special coordination be needed with current or ongoing projects?

Response: All coordination will be through the Contracting Officer’s Representative (COR), all work will be scheduled per Air Ops schedule and approval. The conflicting work is already listed in the contract.

5. When is the anticipated NTP?

Response: Notice to Proceed (NTP) is anticipated within 90 days of contract award.

6. Specification 31 23 00.00 20 Section 3.9.1 Airfield Pavements states, “Compact top 24 inches below finished pavement or top 12 inches of subgrades, whichever is greater, to 100 percent ASTM D1557, compact and backfill to 100 percent ASTM D 1557.” Please confirm

WFF intent to compact the top 12” of subgrade is to remove 12” of material, scarify, place 6” of excavated material, compact to 100 percent of ASTM D1557, and place remaining 6” of excavated material, and compact to 100 percent of ASTM D1557.

Response: Bid according to Specification 31 23 00.00 20 Section 3.9.1 Airfield Pavements.

Also refer to last sentence of Section 31 23 00.00 20 paragraph 3.9. The proper compaction/density of the top 12” of subgrade is required as specified.

7. Specification 31 23 00.00 20 Section 3.9 Compaction states, “Determine in-place density of existing subgrade, if required density exists, no compaction of existing subgrade will be required.” If required density exists will the top 12” of the subgrade be required to be removed and re-compacted?

Response: If the density in place of the existing subgrade meets the requirements, no compaction will be required. Build in accordance with plans and specifications. Bid shall include cost to properly compact the 12” of subgrade, however if proper density exists and subgrade passes proof roll then extra effort may not be necessary.

8. Specification 32 13 11 Section 1.5.6.1 Pilot Lane states, “The test section shall consist of one paving lane at least 400 feet long and shall be constructed to the same thickness as the thickest portion of pavement shown on the drawings.” Please confirm the PCC test section is allowed to be completed as part of the production paving.

Response: Refer to Section 32 13 11 paragraph 1.5.6. Build in accordance with plans and specifications. Test lane may be allowed to be completed as part of the production paving if it meets the requirements of the Contract Documents.

9. Specification 32 13 11 Section 2.10.5 e. states, “Clary screeds, other rotating tube floats, or bridge deck finishers are not allowed on mainline paving.” Please provide clarification of mainline paving. Is the current area scheduled for PCC pavement considered to be mainline paving?

Response: Mainline paving is area designated for PCC pavement.

10. Please verify the Site Superintendent, Quality Control Manager, and Site Safety Health

Officer are all standalone positions? Or can the Site Superintendent and Site Safety Health

Officer dual hat responsibilities?

Response: These positions are stand-alone due to the size of the project. Site Superintendent and Site Safety Health Officer are not allowed to be the same person.

11. Will radio contact with the tower be required for the duration of the project?

Response: Operations on the airfield require contact with the tower at all times.

12. If radios are required for constant contact with the tower will these radios be provided to the awarded contractor?

Response: Refer to specifications, WFF will provide no more than 2 radios for the Contractor to use if additional radios are required then the Contractor will be required to provide their own radios above the two provided radios.

13. What version of AutoCAD will be used for this project?

Response: The drawings are in AutoCADD 2010.

14. Within the contractor’s staging area per the contract plans and specifications will the

Gvernment permit another point of entry into the contractor’s staging area if the additional pint of entry meets the project security requirements and all local hauling requirements?

Response: All points of entry are indicated on the plans and no additional entry points will be allowed.

15. Specification 01 11 00 Section 1.6 Work Scheduling states, “Normal duty hours for work shall be from 8:00am to 4:30pm, Monday through Friday.” Day and night time operations will be required for the project. Will WFF approve 24 hour access 7 days a week during high production periods?

Response: Operations will be within the normal duty hours stated above, when work is needed outside of normal hours the Contractor will have to request after hours work access and receive approval and proper badging before the scheduled work can occur, refer to the specifications.

16. Will Wallops Flight Facility file the appropriate paper work for the FAA NOTAM’s and waivers?

Response: WFF will provide FAA NOTAMS for closures required for construction on its airfield after proper notification and request by the Contractor, WFF requires a 15 day advance notice of the closure, refer to the specifications.

17. Please provide location, type, and service size for nearest water line hook up to service the bach plant. Will a service at a minimum of a 3” line/160 gallons per minute be provided?

Response: There is an existing water main that wraps around the batch plant site, the

Contractor will be allowed to provide their own connection with backflow and run their own service liner to the batch plant site, a 3” line is acceptable. Fire Hydrants on 8” water lines exist within 800’ of the only acceptable Batch Plant location which is on RW17. The 8” line also runs beside the batch plant location, if a batch plant is needed.

18. Specification 01 45 35 section 3.1.2 Special Inspectors item a. states, “Inspect all elements of the project for which the special inspector is qualified to inspect and are identified in the

Schedule of Special Inspections.” Currently section 1.3.12 Schedule of Special Inspections does not provide any elements of work to be inspected. What elements of work are required for special inspection?

Response: The intent in including this specification is to require a special inspection for earthwork activities such as, but not limited to, proof rolling.

19. Specification 01 45 35 section 3.1.2 Special Inspector item d. states, “Submit qualifications records for nondestructive testing (NDT) technicians designated for the project.” Please confirm the special inspector will be required to have nondestructive testing technicians working directly underneath them. Or will the third party material testing company be able to meet these requirements?

Response: Contractor shall submit qualifications records for nondestructive testing (NDT) technicians designated for the project either directly employed or third party.

20. Specification 01 45 35 section 2.1 Fabricator Special Inspection states, “Special Inspections of fabricator’s work performed in the fabricator’s shop is required to be inspected in accordances with the Statement of Special Inspections and the Schedule of Special Inspections unless the fabricator is certified by the approved agency to perform such work without Special

Inspections.” Please provide DOR Statement of Special Inspections.

Response: Refer to #18.

21. Please confirm that 480volts, 600amp, 3phase service will be available to power the batch plant. Are there any power constraints due to NASA launches?

Response: 480 is available at the batch plant site (RW17), however there may not be sufficient ampacity to power the plant. Contractor will need a transformer to step down voltage for trailers or labs. Capacity of 480 service may not support batch plant. NASA launches will not affect power constraints.

22. Drawing G-002 Civil New Work drawing sheets CS 103, 105,106, 111, 114, 116,117, 118, 119, 120,121, 122, 130,131,132,133, and 134 are not used. In referencing Civil Demolition

(CD series) and Erosion and Sediment Control (ES series) drawing sheets, new work is scheduled in the missing “Civil New Work” sheets not used. Please confirm if contractors should reference the Civil Demolition (CD series) and Erosion and Sediment Control (ES series) drawing sheets for missing “Civil New Work” sheets CS 103, 105,106, 111, 114, 116,117, 118, 119, 120,121, 122, 130,131,132,133, and 134?

Response: Contractor will accomplish work as identified on CD sheets. Contractor will construct and maintain erosion and sediment measures on the ES sheets and any other measures as required by the contract documents. “Missing” sheets are on purpose to generally have XX101 sheets all pointing to the same location.

23. Please provide limits of option work with station, location, and offsets on Civil New Work drawing sheets (CS drawing series).

Response: The limits of option work are adequately described as referenced in sheet G004.

24. Drawing sheet C-001 New Work Note 10 states, “Provide 2 inch AC overlay to meet finished grade. See Detail G on CS501.” There is a significant difference from existing to proposed grades in areas where note 10 is applicable. Please confirm only 2 inches will be required to meet intent of note 10.

Response: Provide 2” overlay is correct as designated by Work Note 10 and shading.

25. Drawing sheet C-001 New Work Note 28 states, “Provide 2 inch AC wearing coarse over a 4 inch AC leveling coarse to meet finish grade. See detail I on sheet CS502.” There is a significant difference from existing to proposed grades in areas where note 28 is applicable.

Please confirm only 2 inch AC wearing coarse and 4inch AC leveling coarse will be required to meet intent of note 28.

Response: 2” AC overlay over 4” AC wearing course is correct as designated by New Work

Note 28 and shading/hatching.

26. New work drawing sheets appear to be incomplete. For example drawing sheet CS102 hatched area for 2” overlay does not have any associated new work drawing notes to reference. Please confirm if hatched areas for new work should be bid even if new work notes aren’t referenced.

Response: 2” AC overlay is defined by hatching (See sheet C-001 LEGEND) with New

Work Notes to add additional clarity.

27. If proposed pavement thicknesses are greater than allowable proposed overlay surface coarse lift thickness should contractor anticipate leveling coarse? If a leveling coarse is needed will intermediate asphalt JMF be suitable?

Response: Additional leveling course should not be required if built in accordance with

Contract Documents.

28. How was perched groundwater at 2’ and groundwater elevation at 21 Ft below ground surface determined (Specification 31 23 00.00 20 section 1.5 d)? Please provide soil borings used to determine groundwater at 2’ and groundwater elevation at 21’.

Response: Groundwater elevations were determined by borings conducted by a licensed professional geotechnical firm. All required information necessary to bid this project has been provided as part of the solicitation. Contractor is bid project based off of provided information in the solicitation. No soil borings or information will be provided.

29. What is the basis of the coordinate system shown on drawing sheet V-001? Point of origin.

Scale factor used.

Response: Please see Survey Notes on sheet V-001. Virginia State Plane Coordinate System is used.

30. Are there any other control monuments (other than “Point Name: Sue”)?

Response: Please see sheet V-002 Survey Control Plan. “Station "SUE" is a Primary Air

Control Station and is located fairly close to runway 04-22. http://www.ngs.noaa.gov/cgi-bin/datasheet.prl

31. Drawing V-001 references “Point Name: Sue” but does not show the location on the plans.

Please provide location of “Point Name: Sue”.

Response: Coordinates are provided on sheet V-001.

32. Will equipment using radio contact to communicate require a special permit for radio use?

Response: Frequency approval is required by WFF Frequency Spectrum Manager. Also refer to specifications that state that WFF will provide two radios to the Contractor. Any other radios, cell phones, etc. must be approved by WFF prior to use especially within the telemetry of the satellite dishes.

33. Were Soil Borings performed to determine groundwater elevations? If so please provide.

Response: No soil borings or information will be provided beyond what is included in the

Contract Documents.

34. Drawing B-601 and B-602 states “cores” were taken, however, please provide complete boring log information.

Response: No information will be provided beyond what is included in the Contract

Documents.

35. Please provide NAVFAC basis of design for bidding contractors to fully understand expectations of the project.

Response: Contractor is to bid based on the Contract Documents. Basis of Design is not a contract document.

36. Solicitation Section E – Inspection and Acceptance item e. states, “Unless otherwise specified in the contract, the Government shall accept, as promptly as practicable after completion and inspection, all work required by the contract or that portion of the work the Contracting

Officer determines can be accepted.” What timeframe does the government consider practicable?

Response: Per the contract, the Government has 30 days to review the submittal for all of the required testing and verification data assuming it is submitted in the manner required in the contract. This does not guarantee acceptance within 30 days if the work is found to be unsatisfactory. Refer to the specifications.

37. Does warranty period start at final acceptance of individual areas?

Response: This will be evaluated with the Contractor at the time of acceptance depending on the completion schedule and phasing.

38. Specification 31 23 00.00 20 section 2.1.7 Backfill and Fill Material states, “ ASTM D2487, classification GW, GP, GM, SW, SP, SM” Please confirm satisfactory material CL and ML will be allowed as backfill and fill materials.

Response: ASTM D2487, classification GW, GP, GM, SW, SP, SM are satisfactory materials for backfill and fill material. Build in accordance with plans and specifications. If CL and

ML soils are discovered on site and are suitable then they can be utilized onsite as subgrade, backfill, and fill materials. Imported fill and backfill cannot be CL or ML soils.

39. Specification 31 23 00.00 20 section 3.9.1 Airfield Pavements states, “Compact top 24 inches below finished pavement or top 12 inches of subgrades, whichever is greater, to 100% of

ASTM D1557; compact fill and backfill material to 100% of ASTM D1557.” In order to compact the top 24” or 12” of the subgrade, material will be required to be removed and backfilled. If CL and ML materials are apparent throughout the whole project and do not meet the Backfill and Fill Material specifications shall contractors assume suitable material shall be brought in meeting Specification 31 23 00.00 20 section 2.1.7 Backfill and Fill

Materials?

Response: ASTM D2487, classification GW, GP, GM, SW, SP, SM are satisfactory materials for backfill and fill material. Build in accordance with plans and specifications. Refer to

Section 31 23 00.00 20 Paragraph 2.1.1. Insitu CL and ML soils are satisfactory per contract.

Imported fill and backfill cannot be CL or ML soils.

40. Please confirm a Dynamic Cone Penetrometer was used to calculate all CBR values provided on B-601 and B-602 conforming to ASTM guidelines.

Response: CBR values were determined by a Geotechnical Engineering firm licensed in

Virginia. CBR values are correlations of in-situ testing by a Dynamic Cone Penetrometer.

41. Utilizing DCP data over a nine-year period will more than likely provide inaccurate field conditions for bidding. Are any recent soil borings available?

Response: No soil borings or information will be provided beyond what is included in the

Contract Documents. Appropriate Geotechnical considerations have been made.

42. Drawing B-601 and B-602 list CBR values based on core data. Please confirm ASTM guidelines and procedures listed in ASTM D4429-09a were used to determine calculated CBR values.

Response: CBR values were determined by a Geotechnical Engineering firm licensed in

Virginia.

43. If actual CBR values differ significantly from what is provided in drawing B-601 and B-602 will this be viewed as a differing site condition.

Response: Report differing conditions found in the field from design data to Contracting

Officer per contract. However if the subgrade is deteriorated due to Contractor negligence to comply with the contract then this will not be a differing site condition. Refer to specifications.

44. Please confirm the requirements for bidding this project is NAICS Code 237310 and size standard $36.5 million.

Response: Confirmed. Refer to provision K.1 of the solicitation.

45. Has consolidation due to cohesive soils in sub-base been factored into the design values?

Response: Design values were based on information provided in the Contract Documents.

46. Specification 32 13 11 Section 2.10.7 Texturing Equipment is apparently missing 2.10.7 b.

Unified Guide Specification currently provide section b. as an option for Texturing

Equipment, will WFF revise the bid specifications accordingly?

Response: Provide bid based on texturing equipment allowed in Specification 32 13 11

Section 2.10.7 Texturing Equipment in the Contact Documents. Burlap drag has been intentionally removed and is disallowed. Broom finish is the only acceptable finish for this project and must be performed with a finishing, curing, and texturing machine. Refer to the contract.

47. Is any runway pavement grooving required?

Response: No, only if the required texture is not provided by the Contractor and is needed as a corrective action to correct deficient work, refer to specifications.

48. Power for Batch plants—where is it coming from? Or can WFF provide maximum length and required road cuts for service hook up?

Response: 480 is available at the batch plant site (RW17), however there may not be sufficient ampacity to power the plant. Contractor will need a transformer to step down voltage for trailers or labs. Capacity of 480 service may not support batch plant. NASA launches will not affect power constraints.

49. Please confirm that the only electric to be provided is for general construction purposes only which is 3 phase, 4 wire, 120/208 volts. Will bidding contractors have to provide a generator for any power requirement above 120/208 volts to meet potential need?

Response: Refer to #48.

50. Solicitation Section H.9 Quality Control Testing Supplied By The Contractor item b. states, “If the Contracting Officer or COR suspects that field test results, lab test results, or mix design results are inaccurate, the Contracting Officer may, without limiting or waiving any other rights available to the Government under this contract, in accordance with Clause

52.242-14 Suspension of Work, suspend work in those areas affect by the questionable test results or mix design.” Please confirm if work is suspended and CO/COR suspicions are proved incorrect, contractor’s will be compensated accordingly (both time and money).

Response: If suspension of work is required, it will be in accordance with Clause 52.242-14

Suspension of Work.

51. Solicitation Section H.11 Special Instructions And Information For Construction Contractors

Phase Construction Duration Note 1. states, “Phased Construction Days as listed does not include curing time of asphalt prior to final paint application.” Specification 32 17 23.00 20 section 3.1 Surface Preparation states, “Allow new pavement surfaces to cure for a period of not less than 30 days before application of marking material.” Please confirm Phased

Construction Days listed in Solicitation Section H.11 does not account for cure time for all new pavement surfaces (HMA and PCC) prior to final paint application.

Response: Phased Construction Days as listed does not include curing time of asphalt prior to final paint application. Refer to the Specifications.

52. Solicitation Section H.11 Special Instructions And Information For Construction Contractors

Phase Construction Duration Note1. states, “Phased Construction Days as listed does not include curing time of asphalt prior to final paint application.” Specification 32 17 23.00 20 section 3.1 Surface Preparation states, “Allow new pavement surfaces to cure for a period of not less than 30 days before application of marking material.” If cure times for new pavement surfaces prior to final pavement application is not accounted for in Phase Construction Day durations will the required period of performance of 730 days be extended?

Response: Period of performance of 730 days will not be extended, the phasing days shall fall within the period of performance.

53. If not how will cure times and final pavement markings be factored into final project completion?

Response: Contractor is responsible for means and methods to comply with Contract

Documents.

54. Given the current bid date, with review of the potential NTP date, can the government provide a winter exclusion period for the 2016 and 2017 season? This would be in addition to the current 730 day period of performance.

Response: No addition to the current 730 day period of performance will be provided.

55. Can the government provide two separate NTP’s for Administrative and Construction?

Response: The period of performance is 730 days from the date of the NTP. Only one NTP will be provided.

56. For contractors to get paid for stored materials what documents will WFF require to be submitted?

Response: Submittals will be as described in the Contract Documents.

57. Expansion joint sealant depth is shown on Details “Sawed Joint E” and “ Expansion Joint F”, Drawings at 3/8”, Specs say ¼”, we are presuming the depth to sealant will be ¼”, please clarify.

Response: Specifications govern and ¼” is correct.

58. Specification 01 32 17.00 20 section 1.5 Qualifications states, “The designated Scheduler for the project shall have prepared and maintained at least 3 previous schedules of similar size and complexity of this contract using Primavera P3, Primavera SureTrak, or Primavera P6.”

Please provide clarification to the requirements of similar size and complexity.

Response: Similar dollar value, similar phasing of multiple concurrent phases of work, experience with Federal Scheduling requirements. Refer to contract.

59. Solicitation section 15. Disposition of Materials states, “Items suitable for reuse but not specified to be reused shall be carefully removed to preclude damage and delivered to the

Government as directed by the Contracting Officer’s Representative at the time of removal.”

Please clarify if RAP and Crushed Concrete will be required to be delivered to a Wallops

Flight Facility for reuse. Additionally, please provide location of facility and who will be responsible for maintaining (ie. pushing up piles, SWPPP measures, street sweepers, and etc.)

for bidding purposes.

Response: As already stated in the specifications, any RAP and Crushed Concrete that is not used for the project will be delivered to a stockpile location on Wallops Island. The specific location will be determined since the amount of excess material is known since the contract allowed the contractor to utilize this material in the contract.

60. Please confirm if certified payroll will be required for professional service companies. If so please provide Davis bacon wage rates for surveyors and material testing technicians.

Response: As the correct wage determination is included in the solicitation, the bidder should base his bid on current wages paid for the skill of worker. After award of the contract a wage conformance can be requested.

61. Solicitation section 15. Disposition of Materials states, “Salvage material shall be delivered to the Government salvage yard designated by the COR and placed, with proper documentation.” Will all demolished materials be delivered to the Government salvage yard?

If not please provide list of materials government requires to be salvaged for reuse.

Additionally, please provide location of government salvage yard.

Response: Refer to the specification, the only material that the Government will accept is the excess RAP and crushed concrete, the stockpile location is on Wallops Island.

62. Solicitation section 15. Disposition of Materials states, “Excess excavated material not specified to be reused shall be disposed of at a site designated by the COR.” Will all unsuitable material excavated be disposed of on the Wallops Flight Facility? If not please provide location of COR designated site for disposal.

Response: Refer to #3.

63. Specification 01 32 17.00 20 section 1.6.2.4 Anticipated Weather Delays states, “The contractor shall use the National Oceanic and Atmospheric Administrations (NOAA) historical monthly averages for the NOAA location closest to the project site as the basis for establishing a “Weather Calendar” showing the number of anticipated non-workdays for each month due to adverse weather.” Please confirm the estimated work days listed below should be accounted for the 2016, 2017, and 2018 seasons. These are the monthly averages bidding contractors will be using, if different than WFF averages please provide.

Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec

5 4 7 5 5 6 7 7 7 6 5 6

Response: The averages as submitted are acceptable provided they comply with the published NOAA averages as referenced in the specification.

64. Specification 01 32 17.00 20 section 1.6.2.4 states, “A lost workday due to weather conditions is defined as a day in which the Contractor cannot work at least 50 percent of the day on the impacted activity.” Please confirm that impacted activities are defined as critical path activities unable to be completed due to weather.

Response: Affirmative.

65. Specification 01 33 00 Section 1.5.1 states to submit six copies of submittals. Will WFF entertain using an online submittal tracking system to eliminate the requirement for hard copies?

Response: No, hard copies are required as stated in the specifications.

66. Specification 01 33 00 section 1.9.1 Review Notation states, “Contracting Officer review will be completed within 30 calendar days after date of submission.” Having a 30 calendar days review period is significant. Please provide clarification if 30 calendar days will be taken to review all submittals.

Response: Bid in accordance with Contract Documents (Specification 01 33 00 section 1.9.1

Review Notation) in regard to submittals. Contractor is required to schedule for 30 day review for normal submittals, deviations will take longer as stated in the specification.

67. Specification 01 14 00 Section 1.2 a. states, “The Contractor must conduct his operations so as to cause the least possible interference with normal operations of the activity. Either

Runway 10-28 or Runway 4-22 must be operational at all times.” Specification 01 35 13

Section 1.2.2 a. states, “The “approach-departure clearance surface” is an extension of the primary surface and the clear zone at each end of the runway, for a distance of 50,000 feet.”

Will bidding contractors be required to be out of approach-departure clearance surfaces during exercises?

Response: Contractor will be required to remain clear of approach-departure clearance surfaces of an active runway. Refer to the requirement for Contractor to maintain radio contact with the Tower.

68. Is RWY 17-35 closed for the duration of the project given the proposed batch plant location shown on G-004?

Response: Batch plant location is valid for the duration of contract with a portion of Runway

17-35 closed during this period.

69. If Batch Plant is located on RWY 17-35 how will contractors access D-1 Ramp Area?

Response: Contractors may cross Airfield if RW10-28 is closed for construction or may drive around the airfield via the access road.

70. Can contractors haul material down RWY 17-35 and cross over to Harpold Road by the

Tower?

Response: This may be allowable if RW10-28 is closed for construction during this same period.

71. Will only personnel need to be out of approach-departure clearance surfaces? Or will all personnel and equipment need to be removed as well?

Response: Refer to specifications, Contractor (personnel and equipment) will be required to remain clear of approach-departure clearance surfaces of an active runway.

72. Who owns Wallops Flight Facility water lines inside the facility?

Response: WFF owns the WFF water lines.

73. Will any special coordination be required to tie into water supply services?

Response: This will be discussed during the preconstruction meeting since per specifications all connections to existing utilities require 15 day notice and coordination with the

Government, the specifics are not necessary for the bid.

74. Typically you pave during the day and do green saw cuts at night. Will 24 hour access be allowed during this timeframe?

Response: Refer to the specification. Normal duty hours for work shall be from 8:00am to

4:30pm, Monday through Friday. After hours access will be granted when properly requested.

75. Please provide clarification on operational requirements to keep either Runway 10-28 or

Runway 4-22 open.

Response: Either Runway 10-28 or Runway 4-22 must remain open and operational for air traffic. At no time will both Runways be closed due to contractor’s operations.

76. Are contractor provided Runway Closure X’s to be lighted?

Response: They are not required to be lighted.

77. Solicitation section 16. Excavation Requirements states, “In no event will the Government’s failure to issue a permit relieve the Contractor from its obligation under the contract or waive the Governments’ right to timely and satisfactory performance of this contract.” Please provide estimated duration for government dig permit processing. If the government takes longer than estimated duration to process the dig permit will contractors be compensated for lost time and money?

Response: Contractor must provide 15 days notice as stated in specifications.

78. Specification 01 11 00 section 1.9.1 states, “NASA (after 15 days notice) will approximately locate known utilities once.” Please confirm dig permits will be processed within 15 days after notification is provided to WFF.

Response: Contractor must provide 15 days notice prior to NASA locating known utilities and issuing a dig permit.

79. If contractors are required to be outside approach –departure clearance surfaces please provide estimated per day and duration of potential delays. If Airfield Operations vary on a day to day basis how will lost time be compensated?

Response: Contractor (personnel and equipment) will be required to remain clear of approach-departure clearance surfaces of an active runway. Since this is a contract requirement, additional compensation will not be granted.

80. Should the contractor anticipate any clearing and grubbing for laydown areas, batch plant areas, etc.? If not please provide description, location, and approximate size for bidding purposes?

Response: Location provided on plans. See sheet G-003 and G-004.

81. Specification 01 45 00.00 40 Section 1.3.2.1 Management and Organization states, “ The approved QC Manager shall be onsite daily, full time, no work can be performed unless the

QC manager is onsite.” Please confirm alternate QC managers will be acceptable to perform inspections for the project QC manager periodically as work commences. This project will have multiple DFOW’s being completed simultaneously. One QC manager will have difficulty being in all places at once.

Response: Refer to the specifications, an alternate is acceptable but can only serve as the primary QC for 1 week.

82. Specification 01 45 35 Section 1.3.5 Special Inspector (SI) states, “A qualified person retained by the contractor and approved by the Contracting Officer as having competence necessary to inspect a particular type of construction requiring Special Inspections. The SI must be an independent third party hired directly by the Prime Contractor.” Can the Quality Control

Manager perform the tasks required for the Special Inspector? Or is the Special Inspector required to be a third party inspector hired by the prime contractor?

Response: Refer to #18.

83. Specification 01 45 35 Section 3.1.2 Special Inspector states, “Inspect all elements of the project for which the special inspector is qualified to inspect and are identified in the Schedule of Special Inspections.” Are the special inspections confined to just earthwork activities or all work elements?

Response: Refer to specifications and to #18.

84. Specification 01 45 35 Section 3.1.2 Special Inspector states, “Inspect all elements of the project for which the special inspector is qualified to inspect and are identified in the Schedule of Special Inspections.” Please provide Special Inspectors Schedule of Special Inspections for review.

Response: Refer to #18.

85. Specification 01 45 35 Section 3.1.2 Special Inspector states, “Inspect all elements of the project for which the special inspector is qualified to inspect and are identified in the Schedule of Special Inspections.” The special inspector can be a registered engineer. As such one could argue the special inspector is qualified to inspect all work elements completed within this project. Please confirm the special inspector will be required to inspect all definable features of work. If all definable features of work are not required to be inspected by the special inspector please delineate what definable features of work will be required to be inspected.

Response: Refer to #18.

86. Section 02 61 13-3.4.1 states to remove and replace contaminated soils at a specified depth as shown on the drawings. Boring Log Sheet B-100 shows three (3) areas to have known contaminated soils and these are RW 17 approach, RW 22 approach, and RW 17-35 & RW

04-22 intersection. The plans show Boring Log data for the Runway intersection; these are C-

111, C-116, & C-213 on pages B-601 & B-602, respectively. This data only shows existing section thickness and composition, as well as, subgrade descriptions, but does not call out contaminated soils and any corresponding depths. Futhermore, the area showing both contaminated soils and Boring Log Data does not require any soil excavation. The area at RW

22 Approach will have soil excavation and is showing contaminated soils. What depth should the contractor use for bidding purposes? If the depth is going to be determined by the CO following the start of the project, should the contractor figure an allowance or Unit Price for contaminated soils?

Response: The solicitation shows the areas of potential contamination, the areas of excavation and the depth. Bid per the specifications and solicitation.

87. Is the special inspector required to be on-site for the entire project?

Response: Refer to #18.

88. Will contractors with WFF badges be allowed to go through Gate 6 during construction?

Response: If this is scheduled and approved for access then yes, however the current plan is for access is to be through the main gate and through the NOAA gate onto Echo. Note that if

Gate 6 is utilized the Contractor must coordinate with VDOT and construct a gravel eyebrow and have flaggers for access to gate 6. Use of the NOAA gate will not require VDOT approval, flaggers, or a gravel eyebrow.

89. Specification 01 50 00 section 3.4.3 Storage Area states, “Construct a temporary 6 foot high chain link fence around trailers and materials.” Please confirm material stockpile areas will need 6 foot high chain link fence installed around the entire perimeter of the staging area.

Response: Contractor must provide a temporary 6 foot high chain link fence around trailers and materials.

90. Specification 01 50 00 section 3.4.3 Storage Area requires plastic strip inserts for all temporary fence. The plastic inserts may potentially cause a FOD hazard. Will the plastic inserts be required?

Response: Contractor does not have to provide plastic strip inserts for temporary fence but must maintain the temporary fence in good working order to prevent the potential generation of FOD.

91. Will the contractor be required to provide the Government with a field office?

Response: No.

92. How is the contractor to bid the FOD Barrier? Is FOD Barrier to completely enclose the work site, just be placed on adjacent used pavement, etc.? For Example, If working on TW-Echo at

TW-F/G/H intersections, would the contractor place FOD barriers at the TW-F/G/H intersection with TW-E & RW 04-22 only, or would the entire work area need to be enclosed?

Response: Contractor is responsible for enclosing the area that work is occurring or will generate FOD and ensuring no FOD will reach airfield pavement.

93. Please provide location of Supplemental Storage Area.

Response: RW17 will be utilized if needed.

94. Specification 01 50 00 section 3.4.6 Maintenance of Storage Area states, “Mow and maintain grass located within the boundaries of the construction site for the duration of the project.

Grass and vegetation along fences, buildings, under trailers, and in areas not accessible to mowers will be edged or trimmed neatly.” Please define what the required lawn mowing frequency (1/month?) is?

Response: This depends on the time of year and rainfall, grass shall not exceed 4” in height.

95. Would maintaining and cutting of the grass fall under WFF’s current base maintenance guidelines? If so please provide for bidding purposes.

Response: No, refer to specifications.

96. Specification 01 50 00 section 3.8 Restoration of Storage Area states, “Restore to the original or better condition, areas used by the contractor for the storage of equipment or material, or other used. Gravel used to traverse grassed areas must be removed and area restored to its original conditions, including top soil and seeding.” Batch Plant locations are located on drawings G-003 and G-004. Please confirm the Batch Plant locations will be the same locations for Staging areas. If not please provide drawings with locations.

Response: The area of RW17 will be utilized, refer to plans.

97. How long do badge requests take to process?

Response: Depends on numerous variables, typical time is 14 days, however Contractor is responsible to ensure that all required personnel are badged prior to the scheduled work to commence, delays to the project due to badging issues will not be considered for a contract extension or compensation.

98. Please provide detail as to what constitutes a “site”? Is a “site” the entire project or, for example, would working at Hanger N-159 and RW 04 Approach constitute two separate sites?

Response: Work sites that require oversight are each separate disconnected work areas.

99. Is the contractor to figure on enclosing just the laydown/staging area, trailer area, and batch plant site in the 6’ high chain link fence or will work site(s) need this as well?

Response: Laydown/staging area, trailer area, and batch plant must be enclosed with 6’ high chain link fence. Fencing is not required for the work site.

100. When personnel go to appointments at the Badging Office to pick up individual badges, how much time should be estimated for duration of appointment?

Response: This depends on the workload of the office, if the Contractor has concerns they are able to call ahead and schedule appointment times with the badging office, proper scheduling for badging is the responsibility of the Contractor.

101. Specification 02 41 00 Section 3.1.2 Paving and Slabs states, “Remove concrete and asphalt concrete paving as indicated. Provide neat sawcuts at limits of pavement removal as indicated.” Note 12 on C-001 states, “Provide straight sawcut (Maximum of 2 inch depth) at new to existing AC interface.” Please confirm the only HMA needing to be sawcut at the interface of new to existing AC are labeled by Note 12.

Response: Provide neat sawcuts at all limits of pavement removal. Refer to specifications.

102. For clarification, the Government wants the following items turned over to the CO at the project completion as found on sheet CD501 (17236):

a. X Closure Markers – All

b. FOD Grates – ALL

c. Plastic Jersey Barriers – 50 EA

d. Low Profile Barricades – 0 EA

Response: Correct.

103. Specification 31 23 00.00 20 section 3.1.1.1 Drainage states, “So that construction operations progress successfully, completely drain construction site during periods of construction to keep soil materials sufficiently dry.” Please provide clarification how significant rain events leading to unsuitable work platforms will be addressed in light of unforeseen weather site conditions.

Response: Contractor is responsible for means and methods to comply with the requirements in the Contract Documents. The area affecting operations at the site shall be continually and effectively drained for the duration of the contract.

104. Specification 31 23 00.00 20 section 3.1.1.1 Drainage states, “It is the responsibility of the Contractor to assess the soil and ground water conditions presented by the plans and specifications and to employ necessary measures to permit construction to proceed.” Please confirm that if the Contractor finds soil and ground water condition differences between the plans and specifications and what is found in the field that this will constitute a differing site conditions.

Response: If the Contractor finds soil and ground water condition differences between the plans and specifications and what is found in the field notify the COR for direction. Refer to

Federal Acquisition Regulation Clause 52.236-2 Differing Site Conditions. Deterioration of the existing soil due to Contractor negligence to protect the subgrade is not a change in conditions.

105. Specification 31 23 00.00 section 3.1.1.1 Drainage states, “the area affecting operations at the site shall be continually and effectively drained.” Please confirm contractor will be required to continually and effectively drain the site for typical NOAA monthly weather days to be accounted for. In the event weather days are outside NOAA monthly averages required drainage will be viewed as an unforeseen site condition.

Response: The area affecting operations at the site shall be continually and effectively drained for the duration of the contract. Unforeseen conditions will be evaluated on a case by case basis in accordance with the contract.

106. Specification 31 23 00.00 Section 3.3 Excavation states, “Excavate to contours, elevation, and dimensions indicated.” How shall contractors achieve compaction requirements stated in section 3.9.1 if specifications only allow excavating to stated contours and elevations?

Response: Follow the Specification section. Contractor shall excavate to specified elevations to reach subgrade and then shall comply with the specification for excavation and compaction of subgrade as required if the subgrade does not meet the required density.

107. Specification 31 23 00.00 Section 3.3 Excavation states, “Reuse excavated materials that meet the specified requirements for the material type required at the intended location.”

Please confirm CL and ML materials will be acceptable to use as backfill and fill materials.

Response: Refer to #39.

108. Can the Government provide a manufacturer of the FOD Grate they detailed on sheet

CD501 (17236)? Would the Contractor be able to substitute a standard style “cattle guard” meeting the strength requirements of the detailed FOD Grate? Is the FOD Grate able to be supplied in two (2) piece sections, meaning 2-16’x8’ sections?

Response: Detail provides the minimum requirements to be met and no deviation is allowed.

The government cannot supply the name of a manufacturer without sole source justification.

109. Specification 01 50 00 Section 3.4.6 Storage Area states, “Construct a temporary 6 foot high chain link fence around trailers and materials. Include plastic strip inserts, colored green, so that visibility through the fence is obstructed. Fence posts may be driven, in lieu of concrete bases, where soil conditions permit.” Will temporary fencing with a metal skid base plate be acceptable where fence posts cannot be driven?

Response: Refer to specification 01 50 00 Section 3.4.3. The only acceptable methods for anchoring the posts are concrete bases or driven.

110. Specification 31 23 00.00 Section 3.3.3 Final Grade of Surfaces to Support Concrete states, “Excavation to final grade shall not be made until just before concrete is to be placed.”

Please provide clarification on sequencing of demolition and excavation to final grades.

Significant price increase will be added if contractors are only allowed to remove small sections of concrete (ie. One lane of PCC removed one lane of PCC placed).

Response: Means and methods is up to the Contractor, however if large sections are exposed, are not properly drained and do not remain dry such that the subgrade is deteriorated the

Contractor shall correct this at their expense.

111. Specification 31 23 00.00 Section 3.5.1 Common Fill Placement states, “Use satisfactory materials.” Please confirm CL and ML materials can be used for fill placement.

Response: Refer to #39.

112. Please confirm CL and ML materials are deemed suitable materials?

Response: Refer to #39.

113. Please clarify the missing rates in section 31 32 11-3.3.2.1.

Response: Refer to the plans and the Virginia Erosion and Sediment Control Manual as referenced in the specifications.

114. Section 32 13 11-1.6.2 states that the material stockpile will have a 24” sacrificial layer. Will a sacrificial layer be required if material is staged on a hard surface on RWY 17-

35? Or is the Government open to a reduced layer thickness of 12” – 18” for cost saving purposes?

Response: The material stockpile is required to have a 24” sacrificial layer per Section 32 13

11-1.6.2.

115. Section 32 13 11-2.10.1.a states that the batching and mixing plant will be located off

Government premises no more than 15 minutes haul time from placing site. The plans (G-

004) show the batch plant area at the NE corner of structural pavement on the Runway 17 approach. Section 32 13 11-3.4 states that the concrete must be placed within 45 minutes from the time the cement is charged into the mixing drum (30 minutes if ambient temp is above 90

F). Is the batch plant on or off Government property? Please provide a firm location for the plant. If the batch plant is off Government property, what wait time should the contractor anticipate at the contractors entrance?

Response: Location available for a concrete batch plant on WFF shown on G003 and G004, otherwise contractor is responsible for complying with the requirements of the Contract

Documents. There are existing offsite batch plants that can be utilized or the Contractor can supply their own offsite batch plant site with all required permits and state approvals, or the batch plants can be installed onsite as shown per the plans.

116. Specification 31 23 00.00 Section 3.5.2 Backfill and Fill Material Placement states, “Provide for paved areas and under concrete slabs, except where select material is provided.”

Please confirm CL and ML materials can be used for backfill placement.

Response: Refer to #39.

117. Specification 31 23 00.00 Section 3.5.4 Backfill and Fill Material Placement over

Pipes and Walls states, “Backfill shall be brought to indicated finish grade.” Please confirm

CL and ML materials can be used for backfill placement over pipes and walls.

Response: Refer to #39.

118. Specification 31 23 00.00 Section 3.5.5 Trench Backfilling states, “Backfill as rapidly as construction, testing, and acceptance of work permits.” Please confirm CL and ML materials can be used for trench backfilling.

Response: Refer to #39.

119. Specification 31 23 00.00 Section 3.4.1 Proof Rolling states, “Proof roll the existing subgrade of the apron with six passes of a dump truck loaded with 212 cubic feet of soil.

Operate the truck in a systematic manner to ensure the number of passes over all areas, and at speeds between 2.5 to 3.5 miles per hour. Notify the Contracting Officer a minimum of 3 days prior to proof rolling. Proof rolling shall be performed in the presence of the Contracting

Officer. Rutting or pumping of material shall be undercut as directed by the Contracting

Officer and replaced with fill and backfill material.” Please provide rutting and pumping limits that will require removal and replacement (i.e.