C Mayor ITY OF HOUSTON - … · George Bush Intercontinental ~ William P. Hobby ~ Ellington Airport Sylvester Turner ... applicable permits, including height restrictions per the

CITY OF HOUSTON

George Bush Intercontinental ~ William P. Hobby ~ Ellington Airport

Sylvester Turner

Mayor

Mario C. Diaz

Director of Aviation

Council Members: Brenda Stardig Jerry Davis Ellen R. Cohen Dwight A. Boykins Dave Martin Steve Le Greg Travis Karla Cisneros Robert Gallegos Mike

Laster Larry V. Green Mike Knox David W. Robinson Michael Kubosh Amanda K. Edwards Jack Christie

Controller: Chris B. Brown

August 31, 2016 SUBJECT: Addendum No. 2

REFERENCE: Invitation to Bid (ITB) Solicitation No. H27-TXYNA-2016-018

PN675 – Reconstruction of Taxiway NA

To: All Prospective Respondents

This Addendum is being issued to provide responses to questions received and notice of revisions relative

to the above mentioned ITB for Renovation of Taxiway NA and as noted below.

1. Question: Sheet E10-01 note #11 calls for maximum one spacer. This will require a large inventory of all spacers with increments of 1/16". FAA allows a maximum of three spacers per top section. Can the number of spacers be changed to two per base can?

Response: No. Only a single spacer is allowed per base can.

2. Question: Sheet E10-02 note #3 calls for the subgrade to be cored for the base can. After the base can is installed, the aggregate base have to be placed around the base cans. This will make the base can subjected to damage during placement of aggregate base. Can the aggregate base be core to install the base can?

Response: Yes, see this addendum for revised detail.

3. Question: May we use Tru Bln product of a 70-30 Fly ash-lime mixture in lieu of placing each product individually?

Response: For bidding purposes, requirements of Section 31 32 13.26 shall be adhered to. Contractor can submit a request for modifications to the section at post-award, given material performance requirements will be met and the Owner receives schedule and/or cost benefits.

4. Question: Bid form show 766 Calendar days. Plans show 675 "Construction Phase" Days and 729

Consecutive Calendar Days. Please clarify.

Response: Addendum #1 replaced previous Project Manual Volumes 1-3 dated March 29, 2016 with current Project Manual Volumes 1-3 dated July 27, 2016. Current bid form in Section 00410A reflects

729 calendar day contract duration. Title block on Sheet G06.00.2, which reads "PN 675 CONSTRUCTION PHASE DURATION 729 CALENDAR DAYS", refers to HAS Project Number 675 which has a construction duration of 729 calendar days.

5. Question: Please confirm thickness of new asphalt bond breaker. Where is the pay item for the new

asphalt bond breaker?

Response: Reference typical pavement sections on Sheet C03.14. The bond breaker is subsidiary to FAA Item P-304 in accordance with the standard specification. The bond breaker material and application rate are for the contractor to determine per paragraph 304-5.12, subject to test section and Owner approval.

6. Question: The specs would indicate that the Lime/FA Subgrade is to be cut in existing material. 1. On the taxiway, the typical sections would indicate that the new Lime/FA Subgrade is to place at

an elevation near the top of the existing subgrade. Where is the pay item for the removal of the

existing treated subgrade on the taxiway? Is this to be done Item 39 (12,022 cy if Unclassified Exc)

and Item 40 (7,213 cy of Removal & Replacement of Unsuitable Material)?

2. On the shoulder, the removal of the existing Cement Stabilized Subgrade is paid under Item 16.

Where is the embankment required to replace this to the elevation of the new subgrade?

Response: Subgrade at proposed elevation for pavement construction will be treated with lime/fly ash only as directed by the Owner after proof rolling per FAA Item P-152. 1. Upon removal of the existing taxiway pavement layers, the remaining subgrade will either be: 1)

above the proposed subgrade elevation for pavement construction; 2) below the proposed subgrade elevation for pavement construction; or 3) at the proposed subgrade elevation for pavement construction. Under Condition 1), subgrade above the proposed subgrade elevation will be removed and paid for as unclassified excavation (part of Bid Item 39, est. 52,327 CYs) in accordance with FAA Item P-152. Under Condition 2), the proposed subgrade elevation will be achieved through embankment of unclassified excavation in accordance with FAA Item P-152. The bid price for unclassified excavation includes the cost to embank material as required to achieve proposed subgrade elevation and to haul excess material off of airport property. Bid Item 40 is intended to replace soft material in subgrade at proposed elevation for pavement construction as determined by proof rolling and approved by the Owner.

2. The item for removal of the existing Cement Stabilized Sand will be deleted by this addendum. Existing Cement Stabilized Sand removed as required for construction of the proposed concrete pavement and asphalt shoulder will be measured and paid as Unclassified Excavation.

7. Question: Where is the bid item for the bond breaker?

Response: Refer to response provided in item #5.

8. Question: In the presentation yesterday it was stated and shown that the DBE goal would be 30%, in

all the project manuals the goal is stated as 27%, which is correct?

Response: The 27% DBE goal stated in Documents 00801 and 00806 will be replaced with Office of Business Opportunity's approved goal of 30%.

9. Question: It was stated that only DBE subcontractors would be considered for the DBE goal, will

there be no consideration for WBE, MBE or SBE as usual for City Contracts?

Response: Yes. FAA funded project requires all DBE subcontractors.

10. Question: Our experience has been that it will require approximately 120 days to obtain necessary permits and erection of a batch plant, it appears from your schedule that work requiring the plant to be in operation would occur around day 75, more time needed for permitting process.

Response: The timing of the batch plant permit application is at the contractor’s discretion based on the contractor’s proposed schedule for initial concrete placement on PH 4. The schedule on Sheet G06.00.2 in the contract drawings is for contractor reference. The actual duration for each phase will be determined by the contractor’s means and methods, subject to the phasing restrictions noted in the contract documents, e.g. PH 8 which will close RW 8R-26L from 1/3/18 to 3/3/18.

11. Question: Will all materials demoed on the project become the property of the contractor?

Response: Plan Sheet C01.00, Demolition General Note 7 states that "ALL MATERIALS REMOVED THAT ARE NOT DESIGNATED FOR RE-USE OR RE-INSTALLATION WITHIN THE SCOPE OF THE PROJECT, OR DESIGNATED AS A SALVAGEABLE MATERIAL, SHALL BE LEGALLY DISPOSED OF OFFSITE AT NO ADDITIONAL EXPENSE TO THE OWNER."

12. Question: In addition to the batch plant will other operations be allowed on the designated batch plant site, i.e. pug mill, crusher etc.?

Response: Other operational plants/mills/equipment will be allowed in the designated area, provided they are installed and operated in accordance with the parameters of the plans, specifications, and all applicable permits, including height restrictions per the 7460-1.

13. Question: Specification Section P-620, Runway and Taxiway marking Table 1 lists temporary markings as double paint application rate 50 sf/gal. Temporary markings typically 50% application rate, 200 sf/gal. Please advise on application rate.

Response: Addendum #1 replaced previous Project Manual Volumes 1-3 dated March 29, 2016 with current Project Manual Volumes 1-3 dated July 27, 2016. Table 1 has been revised with respect to paint types and application rates.

14. Question: Section 01450.C.1b says the QC must have experience in parking garage structures.

Please advise this is applicable?

Response: No, the QC must have experience in major taxiway replacements like in airports.

15. Question: The specifications do not allow the QA and QC lab to be the same. Please identify the QA so do not also use them on bid day. If no one is provided we are under the assumption we may use whatever lab we want.

Response: The lab is Aviles located at 5790 Windfern Road Houston, Texas 77041.

16. Question: The specifications specify the contractor to have radios to communicate with ATCT. Please advise what communications we are allowed to have with tower.

Response: No radio communication with the ATCT is allowed or required. The specifications require the Contractor to have radios to monitor ATCT communications, not communicate with the ATCT. Per the CSPP, "the Contractor radios shall be used for monitoring purposes only and shall not be used to communicate with the ATCT. All communication with the ATCT or other elements of the airport shall be through the owner's representative, Airport Operations, and / or engineer, as appropriate." See Specification 01505, Section 1.07, CSPP Pages 30 and 31, and Plan Sheet G04.02, Airport Safety Requirements Note 8, for Contractor radio monitoring and communication requirements.

17. Question: Sheet G04.02 note 6A says we must provide a sweeper or vacuum truck at each intersection. In addition are we to have the other mentioned two sweepers and two vacuum trucks in addition to having one at each intersection or are these inclusive of what we are to have at each intersection?

Response: The minimum of two (2) sweepers and two (2) vacuum trucks required to be onsite for the duration of the project is inclusive of all other requirements regarding sweepers and vacuum trucks. However, enough equipment must be provided to include operators for immediate response to properly keep the intersections free of FOD at all times while construction activities are in progress.

18. Question: Does everyone who is escorting, whether or not they are a designated escort, must have a

radio to communicate with ATCT?

Response: Plan Sheet G04.02, Airport Safety Requirements Note 8 states that "THE CONTRACTOR SHALL SUPPLY AVIATION BAND RADIOS TO EACH SUPERVISORY INDIVIDUAL AND CONTRACTOR LEAD / ESCORT VEHICLE." Also see response provided in item #16.

19. Question: Please provide a list of vehicles that may escort i.e. will vacuum trucks be allowed to

escort and will water trucks be allowed to escort other vehicles?

Response: Escort vehicles will not be restricted by the type of vehicle, but rather by the ability of the vehicle to provide the necessary functions of an escort vehicle. Per Plan Sheet G06.00.1, General Phasing Note 13, "ALL ESCORTED VEHICLES AND PERSONNEL MUST BE WITHIN VISUAL AND VERBAL COMMUNICATION RANGE AND BE ABLE TO RECEIVE AND IMMEDIATELY RESPOND TO ANY DIRECTIVE OR COMMAND AT ALL TIMES." This means that the escort personnel must be able to have an unobstructed sightline of the vehicles in tow at all times and must be able to hear and communicate with the vehicles in tow. Vehicles not capable of providing the necessary functions of an escort vehicle should not be designated as such. Additionally, escort vehicles that are able to provide another function (for example, a water truck) may not perform any other duties while escorting other vehicles / equipment.

20. Question: Note 16 on G04.02 says we must comply with the Airport's safety plan. Can you provide so

it is to be part of the contract? If not how are we to commit to complying with a safety plan without knowing what it is?

Response: The term "Airport safety plan" is in reference to the Construction Safety Phasing Plan (CSPP), included as an attachment in the Project Manual. The contractor / firm awarded the project will be responsible for developing a response specifying how they will comply with the requirements listed in the CSPP. This document is called Safety Plan Compliance Document (SPCD) which is reviewed by the airport operator prior to issuance of NTP.

21. Question: Note 21.c on G04.02 says we may supplement a flag with a flashing light? Does that mean we need both or that we can substitute a flag for a light? If we can substitute a flag for a light during daytime hours, will the flag alone suffice at night if the equipment is parked?

Response: The question as written provides an incorrect summarization of Note 21.C, which states "ALL VEHICLES AND EQUIPMENT (must be) LIGHTED. A CONSTRUCTION SAFETY FLAG MAY BE USED TO SUPPLEMENT THE FLASHING LIGHT OR FOR TRANSIENT TRUCKS DELIVERING MATERIALS DURING DAYTIME OPERATIONS ONLY." This statement allows for the supplementation of, meaning in addition to, flashing lights for vehicles and equipment. It also allows for transient (temporary, hired by the day) trucks to use a construction safety flag instead of a flashing light during daytime operations. Plan Sheet G04.02, Airport Safety Requirements Note 7 provides Contractor vehicle and equipment requirements and states that "ANY VEHICLE OPERATING IN THE AOA DURING THE HOURS OF DARKNESS SHALL BE EQUIPPED WITH A FLASHING AMBER

(YELLOW) DOME-TYPE LIGHT." See CSPP Pages 31 and 32 for additional Contractor vehicle and equipment requirements.

22. Question: Note 29 on G04.02 says we cannot have equipment higher than 25'. To set up a batch plant and pugmill we will need to use a crane. Does the 7460 cover this operation or will we have to fill one out upon receipt of the contract? If it does not cover this, the 60-90 day timeframe may not be enough in order to have the batch plant set up in enough time.

Response: The referenced note was intended for equipment operating adjacent to active airfield pavements. A 7460-1 has been submitted to the FAA by HAS requesting an equipment height of 60' for a concrete batch plant. A separate 7460-1 has been submitted to the FAA by HAS requesting an equipment height of 140' for the crane required to set-up and breakdown the concrete batch plant.

23. Question: Does a 7460 need to be filled out for the operation of the batch plant since it will be higher

than 25'?

Response: Refer response provided in item #22

24. Question: Note 33 on G04.02 says the contractor must remove all equipment from the project work area at the completion of each work period. Please define what a work period is. Does it mean we need to remove all equipment each day?

Response: Work periods are defined on Plan Sheet G06.00.1, General Phasing Note 8, which states the following: "EACH DAY SHALL BE CONSIDERED SPLIT INTO TWO (2) WORK PERIODS – DAYTIME CONSTRUCTION HOURS AND NIGHTTIME CONSTRUCTION HOURS. NIGHTTIME CONSTRUCTION HOURS FOR THIS PROJECT SHALL BE CONSIDERED BETWEEN THE HOURS OF 10:00 PM CST (2200 HOURS) AND 6:00 AM CST (0600 HOURS). ALL OTHER HOURS SHALL BE CONSIDERED DAYTIME CONSTRUCTION HOURS." Plan Sheet G04.01, General Staging/Storage Area Note 10 states the following: "ALL CONTRACTOR VEHICLES AND EQUIPMENT SHALL BE PARKED IN THE STAGING / STORAGE AREAS WHEN NOT IN USE."

25. Question: At the pre-bid it was mentioned we will have to sign a lease agreement to use the Airport's

property. Can you provide so it is to be part of the contract?

Response: No lease agreement will be required. Refer to General Requirements/Contract Specifications Sec. 01145 Contractor use of premises.

26. Question: On sheet G06.00.1 note 4 says Taxiway NA will be partially restricted. Please tell us exactly what partially restricted means?

Response: The phrase "restricted" when made in reference to a specific portion of airfield pavement, used throughout the Phasing Plan sheets, provides clarification to the size of aircraft allowed to use the specified airfield pavement while construction operations are ongoing. "Restricted" typically means that the allowable aircraft during construction operations is smaller than the regular allowable aircraft. These notes are primarily for the use of Airport Operations and ATCT personnel. Specific airfield pavement closures and restrictions are provided for each specific construction phase.

27. Question: On sheet G04.02 note 27 it says all equipment should be serviced and maintained. Does that mean no equipment can be brought into the airfield if it has the smallest of leaks? Please confirm.

Response: The intent of this note is to prohibit vehicles and equipment that may cause environmentally detrimental conditions from entering the AOA. The Contractor is required by this note to invest the time and resources, as necessary, to service and maintain Contractor vehicles and

equipment in order to provide vehicles and equipment that meet this intent. Please note that any vehicle with any sized leak must be removed immediately.

28. Question: Does the quality control manager need to be onsite at all times or just during placement of materials i.e. do they need to be onsite if we are performing demolition?

Response: Please refer to specification Section 1450.

29. Question: Does the quality control plan we need to submit need to show when oil levels and fuel levels of equipment need to be checked?

Response: Yes.

30. Question: What sort of quality control checklists need to be supplied?

Response: FAA Advisory Circular 150/5370-10G, Part 1 General Provisions, Section 100, provides guidance as to the requirements of the Contractor Quality Control Program. Additionally, many of the technical specifications provide QC requirements pertaining to that individual specification. The properly experienced Quality Control Manager within your firm will be able to guide you appropriately. The Contractor shall submit a QC plan to be accepted by HAS prior to construction.

31. Question: If an item is incidental to a scope of work but not necessarily required, will that constitute a deduction in payment?

Response: If an item is on/in a detail/specification document/ or within a note as incidental to the scope of an SOV line item, then it is required. During construction, should an individual SOV line item not contain all items detailed/spec'd/noted it will be considered incomplete. Requests for Deviations from the details/specs/notes may be submitted for consideration prior to construction of that SOV item for approval. Negotiations for credit(s) will occur at that time.

32. Question: How many trucks can be escorted at one time? Is there a difference in how many dump

trucks can be escorted versus how many trailers can be escorted?

Response: CSPP Page 30, first paragraph, states that "Contractor escorted vehicles are limited to three (3) vehicles per escort or two (2) 18-wheeler delivery vehicles per escort. Escorts must maintain positive control of all escorted vehicles at all times. All escorted vehicles and personnel must be within visual and verbal communication range and be able to receive and immediately respond to any directive or command at all times." This requirement is also shown in Plan Sheet G06.00.1, General Phasing Note 13.

33. Question: How many gate guards are required for our entrance into the AOA?

Response: Plan Sheet G04.02, Airport Safety Requirements Note 3, provides the Contractor's gate control requirements. No specific number of gate guards is required by the plans or Project Manual. However, the Contractor shall be responsible for providing proper security and control of the gate to keep unauthorized vehicles from accessing the AOA. A designated stop/queuing area, additional signage, and/or gate arm may be considered to enhance access control into the AOA.

34. Question: ASTM C94 requires wet batch trucks to be water tight. Does this mean the truck bed

should be able to carry water in its bed without any leaks?

Response: Correct, for compliance with ASTM C94 the bed of wet batch trucks shall be water tight.

35. Question: Will environmental spill kits be required on both sides of each taxiway crossing?

Response: Plan Sheet G04.02, Airport Safety Requirements Note 27, in part, provides the Contractor's spill prevention and response requirements. No specific number of environmental spill kits or any other related material/equipment is required by the plans or Project Manual. However, the Contractor shall be responsible for meeting the conditions stated in Note 27.

36. Question: In the P219 specification what is the allowable percent of asphalt since it is crossed out in the table?

Response: Section 219-2.1, third paragraph reads, "Recycled concrete aggregate sub-base course shall consist of at least 90%, by weight, Portland cement concrete, with the remaining percentage consisting of incidental asphalt concrete." Given recycled concrete at a minimum of 90% by weight, asphalt will be a maximum of 10% by weight.

37. Question: For P219, will multiple JMF be allowed to be submitted and used?

Response: For bidding purposes, approval of only a single JMF should be anticipated. The intent for including FAA Item 219 is to recycle existing concrete pavement removed under this project. Post-award, the contractor can request submittal of multiple JMFs, given material requirements will be met by each and the Owner receives schedule and/or cost benefits.

38. Question: For P304, will a stringline be required on finishing operations?

Response: Yes, reference Section 304-4.5, standard FAA specification section requirement.

39. Question: For P304, please define what a true vertical face it? Does this mean the CTB needs to be sawcut before the adjacent lane is placed?

Response: Section 304-5.9, second paragraph reads, "Longitudinal construction joints (parallel to the centerline) shall be formed to a consistent, well-defined vertical edge that is free of loose material." Vertical in this context is defined as 90-degrees +/- to the horizontal plane of the CTB layer. Means and methods of forming the vertical edge are not defined and are left up to the contractor.

40. Question: For P304, will one gallon per 200 square feet act as the bondbreaker and prevent cracking

of the CTB to reflective crack the concrete?

Response: Per Section 304-5.10, second paragraph, the one gallon per maximum of 200 square feet of CTB surface area application rate applies to the liquid membrane-forming curing compound. If the liquid membrane-forming compound will also be used as a bond breaker, the rate will be subject to approval by the Owner after application to a test section per Section 304-5.12.

41. Question: The P501 specs state hauling equipment is not permissible on the concrete until it has achieved a flexural strength of 550 psi. Please confirm this is the only requirement to open the pavement up to traffic.

Response: Per Section 501-4.18, both a test-established flexural strength of 550 psi prior to 14 calendar days from placement and joint treatment are required in order to open a pavement to construction traffic.

42. Question: For the P501, do dowel bars have to be epoxy coated or just painted? Typically they are painted with red oxide.

Response: Epoxy coating of dowel bars is not a project requirement.

43. Question: For the P501, does all of the concrete paving have to have sawcut grooves in it? If so, do the grooves have to extend all the way to the edge of pavement or should it stop approximately one foot from the edge of pavement?

Response: Sawcut grooves, in the context of runway pavement construction, are not a project requirement.

44. Question: Can the haul time for wet batch concrete trucks be increased? It will be difficult to get from

the batch plant location to certain areas of the taxiway in under 30 minutes.

Response: Truck mixers and/or truck agitators shall be used for hauling distances where the anticipated elapsed time from addition of cementitious material to the placement of concrete will exceed 30 minutes.

45. Question: The CSPP states during certain times of the year such as Christmas and Thanksgiving no

assistance from Airport Operation will be allowed. Does that mean no work can occur since operations assistance is needed to set flaggers out at the beginning and end of each shift?

Response: Per direction from HAS, Airport Operations staff supports a 24/7 operation. However, during the holiday periods listed, the staffing levels may be lower than usual. No major activities in which heavy Airport Operations presence is required such as Phase swaps should be planned. However, if such activities are inevitable during the Holidays, advance coordination with Airport Operations is necessary to ensure expected level of support can be provided. Setting flaggers at the beginning /end of each shift is no issue.

46. Question: In P620-3.5 Paint Application, it states a period of 30 days shall elapse between asphalt placement and application of paint. Can the curing period of whatever the paint is applied to be waived. If not does this really mean for example on Phase 8, there are really on 30 days to have all the work completed since placement of the asphalt shoulders is basically the last item to be completed?

Response: This item will be addressed in the Phasing Plan Marking Notes in Addendum No. 2. The curing time will not be reduced.

All pavement markings shown on the Phasing Plan Marking drawings assume all necessary

permanent marking application conditions, including pavement curing waiting periods, have been achieved. If the project schedule requires the Contractor to open any closed pavement(s) before permanent markings can be applied, the Contractor shall install temporary markings as necessary in order to open the closed pavement(s). After all necessary permanent marking application conditions have been met, the Contractor shall return to the appropriate pavement(s), remove all temporary markings, and remark with permanent markings. This work will be considered conclusive work outside the identified phase limits and shall be completed during nighttime construction hours. The Contractor shall coordinate access to and temporary closures of the appropriate pavement(s) with Airport Operations.

47. Question: Can the soil blanket be a separate bid item since some of the seeding will have the blanket

and other areas will not?

Response: Seeding and soil retention blankets will not be separated as independent bid items. Specification T-901, Section 2.4 states: "Provide and install soil retention blankets on all seeded areas".

48. Question: How many vehicles can be escorted by a single escort vehicle?

Response: Refer response provided in item #32.

49. Question: In the P219 specs it states that concrete which exhibits ASR cannot be used? How much existing concrete exhibits ASR?

Response: The Owner will identify areas of existing concrete that exhibit ASR post-award. Based on the volume of concrete to be demolished, a potential deficit of material for Item P-219 is not anticipated.

50. Question: Section 00629 Affidavit for FAA Form 7460-1makes us stipulate the maximum height of

construction equipment. The specifications state the maximum height of equipment shall not exceed 25'; however the batch plant will certainly exceed this. Please state if this form is only for equipment on the jobsite or if this form is for both the jobsite and staging area as the batch plant and crane to erect the batch plant will exceed the 25' height.


51. Question: What is the dollar estimate for the project?

Response: This will be determined with the resulting Bids.

52. Question: Are all pavement marking activities, whether temporary or permanent be paid for under their respective bid item?

Response: Correct. Painted pavement markings are measured and paid by color. Thermoplastic pavement markings are measured and paid by type of marking e.g. Runway Holding Position Markings.

53. Question: Item 01564 is the Trench Safety System on the bid form but the spec Section is 01561.

Are these the same?

Response: The specification section on the bid form will be corrected by addendum to match the specification section number.

54. Question: If sod is required around electrical manholes or sign foundations per the electrical

specifications, is that considered incidental or will that be paid per bid item B-22 and the T-904 spec?

Response: Vegetation restoration requirements for electrical work will be considered subsidiary to the associated electrical work.

55. Question: On Sheet C03.14 it states the bond breaker surface shall be cleaned of debris prior to

concrete placement. The method of cleaning would be with a sweeper. Wouldn't this damage the bond breaker and if so will more bond breaker have to place on the CTB prior to concrete placement?

Response: The application rate proposed by the contractor for the bond breaker should be sufficient to preclude damage by construction equipment. The method of cleaning to avoid bond breaker surface damage is considered contractor’s means and methods. Bond breaker coverage and thickness will be inspected prior to placement of the concrete layer.

56. Question: Boring across Runway and Taxiway will require personnel to cross Runway and Taxiway. Also work shifts will be longer than 10 hours. Is any allowance made for Runway and Taxiway extended closures during Phase 2?

Response: Refer to G06.02.1. All necessary extended closures must be coordinated with HAS Operations and submitted formally via a WAN.

57. Question: Boring across Runway and Taxiway will all 5kv circuits to be secured for safety reasons. Is any allowance made for Runway and Taxiway extended closures during Phase 2?

Response: Directional Drilling operation may be performed during daytime or night time as needed within 20 calendar days. Refer to G06.02.1. All necessary extended closures must be coordinated with HAS Operations and submitted formally via a WAN.

58. Question: Tie-ins to existing conduit along runway and taxiway will require old cables to be removed, new conduit installed and new cables pulled. If this work was intended to be done at night all 5kv circuits to the north complex have to be secured. Is any allowance made for Runway and Taxiway extended closures during Phase 2?

Response: Refer to G06.02 series drawings for closures associated with cut-over of phase 2 scope (RGL and LAHSO to JCP system). During later phases, all electrical scope may be performed while electrical vault is locked-out/tagged-out. However, the isolated RGL and LAHSO circuits located in the JCP system will remain operational through-out the remaining phases of the project.

59. Question: FAA has 5kv circuits for the RWSL. Is FAA going to locate the circuit routing and secure

power for these circuit during construction?

Response: Refer to this addendum or future revision for RWSL circuit modifications. The owner will be responsible for coordinating with the FAA to secure the circuits.

60. Question: There is work outside the barricaded area (construction box) which is inside the OFA or

TSA. Will Airport Operations personnel be readily available during contractor’s work shift when necessary?

Response: This item will be addressed in Addendum No. 2. Plan Sheet G06.00.1, General Phasing Note 18 and the Phasing Plan Movement Note Sheets will be amended to discuss the requirements for required work outside the barricaded areas.

61. Question: Specification number 00801-2 in the contract shows a DBE percentage of 27%. Other locations and in the prebid there are notes indicating a 30% DBE percentage. Please clarify the contract percentage of DBE for the project.


62. Question: Specification number 01326-1 states that “No work that would require support from airport operations will be permitted” during the indicated time frames during Christmas, Thanksgiving, and the Superbowl. Please clarify what support from operations means. The notes state that work can continue but no phase changes can occur but we need clarification on what support from HAS will be available during that time.


63. Question: We have concerns on what the engineer has intended for the bond breaker for the concrete pavement. The notes in the plans reference the P-304 spec for the cement treated base course which outlines a de-bonding compound but states that the Contractor shall be responsible for selecting the debonding compound and the application rate. Please clarify what the intent of the engineer for the bond breaker is for the project. And will the contractor be allowed to propose alternate bond breaker materials.

Response: Refer to response provided in item # 5. With the exception of the additions and deletions shown, the bond breaker requirements are FAA standards used nationally on all federally funded

concrete paving projects. The contractor is responsible for selecting the bond breaker and determining the application rate, subject to acceptance by the Owner through a test section demonstration.

64. Question: Sheet C03.14 in the typical section shows a Lime/Flyash subgrade. The schedule of values indicates a cement/flyash treated subgrade. Please clarify how the subgrade is to be treated. If the subgrade is to cement/flyash then please provide a specification for the cement/flyash treatment.

Response: Addendum #1 replaced previous Project Manual Volumes 1-3 dated March 29, 2016 with current Project Manual Volumes 1-3 dated July 27, 2016. Current bid form in Section 00410B reflects lime/fly ash treated subgrade.

65. Question: Sheet D02.11 Note 1 state that the storm sewer between “NA” and runway 8R/26L shown on sheets D02.01 through D02.05 will be improved as part of a future project. Please clarify.

Response: The note refers to sheets removed from the ITB package and no longer applies. The note is deleted by this addendum.

66. Question: Sheet C03.14 Note 3 in the existing pavement section states that the owner’s

representative will make the call for the embankment. If the existing material does not meet the specification, is there a stockpile on the airport property that can supply spec embankment material.

Response: The quantity of unclassified excavation is estimated to significantly exceed the quantity of subsidiary embankment that will be needed for the taxiway pavement and for the asphalt shoulder. If needed, an existing pit area is located on the NW corner of Chanute and Rankin.

67. Question: Given the complexity, phasing, and magnitude of this project Webber requests that the bid

date at the very least remain as is at September 15th or even be extended by a week or two in order to be able to properly analyze the details and accurately price the project.

Response: At this time, the bid date has not been modified and remains September 15, 2016.

NOTICE OF REVISIONS AND ADDITIONS TO THE ITB DOCUMENT AS NOTED BELOW:

I. The Project Manual is hereby changed as follows:

1. REPLACE all non-FAA section headers, where applicable, with the following:

Reconstruction of Taxiway NA Project No. 675 CIP No. A-000570 AIP No. 3-48-0111-TBD

2. REPLACE Page 00015-14 of Section 00015, List of Drawings.

3. REPLACE Section 00410B, Bid Form – Part B.

4. REPLACE Section 01210 Cash Allowances.

5. REPLACE Section 01312, Coordination and Meetings.

6. REPLACE Section 01555, Traffic Control and Regulation.

7. DELETE Section 01740, Site Restoration.

MODIFY Section 00010, Table of Contents, to reflect deletion.

8. REPLACE Pages 2, 3, 5, 6, 27, 39, and 40 of Part 1 General Provisions, FAA AC 150/5370-10G, Standards

for Specifying Construction of Airports.

9. REPLACE Pages 1 – 4 of Item 01 59 01, Temporary Construction Items.

10. REPLACE FAA Item P-101, Surface Preparation.

11. REPLACE FAA Item P-401, Hot Mix Asphalt (HMA) Pavements.

12. REPLACE FAA Item P-501, Portland Cement Concrete (PCC) Pavement.

13. REPLACE FAA Item P-610, Structural Portland Cement Concrete.

14. REPLACE FAA Item T-905, Topsoiling.

15. REPLACE Pages 7 – 10 of Item 26 05 00, Common Work Results for Electrical.

16. REPLACE Page 10 of Item 26 05 05, Alterations, Removal and Demolition.

17. REPLACE Page 14 of Item L-108, Underground Power Cable for Airports.

18. REPLACE Page 6 of Item L-115, Electrical Manholes and Junction Structures.

19. REPLACE Page 51 of the Construction Safety and Phasing Plan.

20. REPLACE “Section 01457 – Estimating Percentage of Product within Specification Limits” with “FAA Section

110 Method of Estimating Percentage of Material Within Specification Limits (PWL)” in the “GENERAL”

paragraph of Section 00801, Supplementary Conditions for Project Funded by AIP Grant.

21. CHANGE the “Contract Goal” noted on page 00801-2, Section 00801, Supplementary Conditions for Project

Funded by AIP Grant, from “27%” to “30%”.

22. CHANGE the DBE goal noted on page 00806-11, Section 00806, Disadvantaged Business Enterprise

Program, from “27%” to “30%”.

23. DELETE the words “parking garage” from paragraph 1.03.C.1.b, Section 01450, Contractor’s Quality Control.

I. The Project plans are hereby changed as follows:

1. REPLACE G02.02, Index of Sheets (2 of 2).

2. REPLACE G03.01, Summary of Quantities.

3. REPLACE G04.02, Safety and Security Notes.

4. REPLACE G04.03, Safety and Security Details.

5. REPLACE G06.00.1, Overall Phasing Plan.

6. REPLACE G06.04.3, Phasing Plan - Phase 4 Markings.




10. REPLACE G06.08.5, Phasing Plan - Phase 8 Marking (1 of 3).








18. REPLACE C01.00, Existing Conditions and Demolition Key Plan.

19. REPLACE C03.01 – C03.05, TW NA Centerline Profile (5 sheets total).

20. REPLACE C03.06 – C03.12, Taxiway Connector Centerline Profiles (7 sheets total).

21. REPLACE C04.01 – C04.09, Grading Layout Plan (9 sheets total).

22. REPLACE C07.01 – C07.09, Spot Elevation Plan (9 sheets total).

23. REPLACE D03.01 – D03.09, Underdrain Plans (9 sheets total).

24. REPLACE D03.10 – D03.14, Underdrain Profiles (5 sheets total).

25. REPLACE E02-11, Electrical Demolition Plan Airfield Lighting and Signage Taxiway 'NA'.

26. REPLACE E02-19, Electrical Demolition Plan Airfield Lighting and Signage Taxiway 'NA'.

27. REPLACE E03-11, Proposed Electrical Plan Airfield Lighting and Signage Taxiway 'NA'.

28. REPLACE E03-19, Proposed Electrical Plan Airfield Lighting and Signage Taxiway 'NA'.

29. REPLACE E10-02, Electrical Details Elevated Edge Fixture.

30. REPLACE E10-09, Electrical Details Ductbank and Bore Casing.

31. ADD the following Movement Note to Phasing Plan Sheets G06.02.1, G06.03.2, G06.03.3, G06.04.1,

G06.05.1, G06.06.1, G06.07.1, G06.08.1, G06.09.1, G06.10.1, G06.11.1, G06.12.1, G06.13.1, and G06.14.1:

1. REQUIRED WORK ITEMS OUTSIDE OF THE IDENTIFIED PHASE LIMITS / BARRICADED AREAS

(TYPICALLY PREPARATORY, COMPLEMENTARY, OR CONCLUSIVE IN NATURE WITH

RESPECT TO THE WORK SPECIFIED WITHIN THE PRIMARY PHASE LIMITS) SHOULD BE

PERFORMED IN A MANNER SO AS TO MINIMIZE THE NUMBER, FREQUENCY, AND DURATION

OF ADDITIONAL PAVEMENT CLOSURES. THE CONTRACTOR IS EXPECTED TO WORK IN A

MANNER TO HELP MEET THIS INTENDED GOAL, INCLUDING COORDINATION AND

ORGANIZATION OF CONTRACTOR AND SUBCONTRACTOR WORK FORCES. ADDITIONAL

PAVEMENT CLOSURES FOR ALL NECESSARY RELATED WORK OUTSIDE OF THE IDENTIFIED

PHASE LIMITS / BARRICADED AREAS SHALL BE COORDINATED IN ACCORDANCE WITH THE

AIRPORT SAFETY REQUIREMENTS PROVIDED ON SHEET G04.02 AND MAY REQUIRE AN

AIRPORT OPERATIONS ESCORT.

32. ADD the following Note E to Note 2 of the pavement transition details on Plan Sheets G06.04.4, G06.05.4,

G06.06.4, G06.07.4, and G06.08.8:

E. THEY ARE IN ACCORDANCE WITH DETAIL 7A-C03.15.

33. ADD the following Notes to Proposed Geometry Plan Sheets C.02.01, C.02.02, C.02.03, C.02.04, C.02.05,

C.02.06, C.02.07, C.02.08, C.02.09, and C.02.10:

1. SEE DETAIL 6-C03.15 FOR TRANSITION REQUIREMENTS AT INTERSECTION OF NEW

CONCRETE PAVEMENT TO EXISTING ASPHALT PAVEMENT TO REMAIN.

2. SEE DETAIL 4-C03.15, 5-C03.15, 7A-C03.15, 7B-C03.15, AND 8-C03.15 FOR TRANSITION

REQUIREMENTS AT INTERSECTION OF NEW CONCRETE PAVEMENT TO EXISTING

CONCRETE PAVEMENT TO REMAIN.

34. REVISE the callout on Detail 2, Sheet C03.14, to read “BOND BREAKER (ITEM P-304) (SEE NOTE 4)”.

35. REVISE the callout on Detail 3, Sheet C03.14, to read “BOND BREAKER (ITEM P-304) (SEE NOTE 5)”.

36. DELETE the following Note 1, Plan Sheets D02.11 – D02.15:

1. THE STORM SEWER SYSTEM BETWEEN TAXIWAY NA AND RUNWAY 8R/26L SHOWN ON

SHEETS D02.01 THROUGH D02.05 WILL BE IMPROVED AS PART OF A FUTURE CONTRACT.

RENUMBER the remaining notes sequentially from 1 to 14.

37. ADD the following Note 7 to the Junction Can Plaza Notes on Electrical Details Plan Sheet E10-08:

1. PROVIDE SOD, MINIMUM 36" AROUND PERIMETER OF MAINTENANCE PAD SURROUNDING

JUNCTION CAN PLAZA (JCP). PAYMENT IS INCIDENTAL TO JCP LINE ITEM.

38. ADD the following new Plan Sheets:

1. E10-11 Electrical Details - RWSL Semi-Flush Fixture.

2. E10-12 Electrical Details - RWSL Wiring Details.

3. E10-13 Electrical Details - RWSL Grounding Details.

4. E10-14 Electrical Details - RWSL Misc. Details.

39. REPLACE the following General Note 2 of the Electrical Demolition Plan Airfield Lighting and Signage Plan

Sheets E02-01, E02-02, E02-03, E02-04, E02-05, E02-06, E02-07, E02-08, E02-09, E02-10, E02-11, E02-12,

E02-13, E02-14, E02-15, E02-16, E02-17, E02-18, E02-19, E02-20, E02-21, E02-22 and E02-23.

1. ALL LIGHT FIXTURES, SIGNS AND ELECTRICAL EQUIPMENT SHOWN TO BE DEMOLISHED

SHALL BECOME THE PROPERTY OF THE CONTRACTOR AND SHALL BE DISPOSED.

40. REPLACE the following Handhole Note 13 of the Electrical Detail Plan Sheets E10-06 and E10-07.

1. THE TOP OF THE MANHOLES/HANDHOLES SHALL BE 1" MIN/ 3" MAX ABOVE THE FINISHED

GRADE INCLUDING THE SOD, EXCEPT WHEN INSTALLED IN PAVEMENT. LOCATE

MANHOLES/HANDHOLES FLUSH WITH GRADE IN PAVEMENT. SOD TO EXTEND MIN. 36"

AROUND PERIMETER OF MAINTENANCE PAD. PAYMENT IS INCIDENTAL TO

MANHOLE/HANDHOLE LINE ITEM.

List of attachments is as follows:

1. Revised Page 00015-14 of Section 00015, List of Drawings.

2. Revised Section 00410B, Bid Form – Part B.

3. Revised Section 01210 Cash Allowances.

4. Revised Section 01312, Coordination and Meetings.

5. Revised Section 01555, Traffic Control and Regulation.

6. Revised Pages 2, 3, 5, 6, 27, 39, and 40 of Part 1 General Provisions, FAA AC 150/5370-10G, Standards for

Specifying Construction of Airports.

7. Revised Pages 1 – 4 of Item 01 59 01, Temporary Construction Items.

8. Revised FAA Item P-101, Surface Preparation.

9. Revised FAA Item P-401, Hot Mix Asphalt (HMA) Pavements.

10. Revised FAA Item P-501, Portland Cement Concrete (PCC) Pavement.

11. Revised FAA Item P-610, Structural Portland Cement Concrete.

12. Revised FAA Item T-905, Topsoiling.

13. Revised Page 51 of the Construction Safety and Phasing Plan (CSPP).

14. Revised Pages 7 – 10 of Item 26 05 00, Common Work Results for Electrical.

15. Revised Page 10 of Item 26 05 05, Alterations, Removal and Demolition.

16. Revised Page 14 of Item L-108, Underground Power Cable for Airports.

17. Revised Page 6 of Item L-115, Electrical Manholes and Junction Structures.

18. Revised plan sheet G02.02, Index of Sheets (2 of 2).

19. Revised plan sheet G03.01, Summary of Quantities.

20. Revised plan sheet G04.02, Safety and Security Notes.

21. Revised plan sheet G04.03, Safety and Security Details.

22. Revised plan sheet G06.00.1, Overall Phasing Plan.

23. Revised plan sheet G06.04.3, Phasing Plan - Phase 4 Markings.




27. Revised plan sheet G06.08.5, Phasing Plan - Phase 8 Marking (1 of 3).








35. Revised plan sheet C01.00, Existing Conditions and Demolition Key Plan.

36. Revised plan sheets C03.01 – C03.05, TW NA Centerline Profile (5 sheets total).

37. Revised plan sheets C03.06 – C03.12, Taxiway Connector Centerline Profiles (7 sheets total).

38. Revised plan sheets C04.01 – C04.09, Grading Layout Plan (9 sheets total).

39. Revised plan sheets C07.01 – C07.09, Spot Elevation Plan (9 sheets total).

40. Revised plan sheets D03.01 – D03.09, Underdrain Plans (9 sheets total).

41. Revised plan sheets D03.10 – D03.14, Underdrain Profiles (5 sheets total).

42. Revised plan sheet E02-11, Electrical Demolition Plan Airfield Lighting and Signage Taxiway 'NA'.

43. Revised plan sheet E02-19, Electrical Demolition Plan Airfield Lighting and Signage Taxiway 'NA'.