Attach 06 Questions and Answers 5May25.pdf

Demo B404 Questions from 15 April Site Visit

1. Will independent 3rd party clearance inspection be required to verify remediation of hazardous substances such as asbestos on the roof? Hazardous material survey has been included with these responses. Bidders shall comply with all state laws, project drawings and specifications.

2. The retaining wall between B404 and B451 presents some interesting challenges. Will the government consider removal of the top 5-6’ of this wall and leaving the lower portion in place as a finished product or does the government wish to remove the wall in its entirety? The wall shall be demolished in its entirety. How this is accomplished shall be dictated by means and methods as determined by the contractor.

3. If the government wishes for complete removal of the retaining wall will sheet piling be allowed to be utilized to stabilize B451 during removal of the wall and backfill of the basement area? These sheet piles would be removed after completion of the backfill operation. This is acceptable.

4. Will testing for cadmium or chromium will be required, It is referenced in the lead abatement specification. Hazardous material survey has been included with these responses. Bidders shall comply with all state laws, project drawings and specifications.

5. Will clearance wipe samples be required following lead abatement as this is a demo, although again this is referenced in the specifications. Bidders shall comply with all state laws, project drawings and specifications.

6. Will CIH be needed on-site for the full duration of abatement activities? The specification references the PCP performing daily air monitoring. Bidders shall comply with all state laws, project drawings and specifications.

7. Will a lead TCLP sample of the building will be needed? Bidders shall comply with all state laws, project drawings and specifications.

8. Pertaining to specs below - Is it the intent of the government to test at this frequency?

No frequency is too great.

9. Pertaining to specs below - Will the government consider a lower testing frequency for this operation? Yes, 1 test per lift.

3.16.2 In-Place Densities: 3.16.2 and 3.16.3 contradict. Just need 1 test per lift using

ASTM D6938.

a. One test per 100 square feet, or fraction thereof, of each lift of fill or backfill areas compacted by other than hand-operated machines.

b. One test per 150 square feet, or fraction thereof, of each lift of fill or backfill areas compacted by hand-operated machines.

3.16.3 Check Tests on In-Place Densities:

If ASTM D6938 is used, check in-place densities by ASTM D1556/D1556M as follows:

a. One check test per lift for each 1,000 square feet, or fraction thereof, of each lift of fill or backfill compacted by other than hand-operated machines.

b. One check test per lift for each 1,000 square feet, of fill or backfill areas compacted by hand-operated machines.

Spec section 31 00 00 para 3.16.4 states:

3.16.4 Moisture Contents Remove

In the stockpile, excavation, or borrow areas, perform a minimum of two tests per day per type of material or source of material being placed during stable weather conditions. During unstable weather, perform tests as dictated by local conditions and approved by the Contracting Officer.

Spec section 31 00 00 para 3.16.5 states: 1 lab test per material or when change in material is detected on site.

3.16.5 Optimum Moisture and Laboratory Maximum Density

Perform tests for each type material or source of material including borrow material to determine the optimum moisture and laboratory maximum density values. One representative test per 100 cubic yards of fill and backfill, or when any change in material occurs which may affect the optimum moisture content or laboratory maximum density.

-Contractor recommends the following testing matrix:

3.16.2 - Density Testing one test for each 2,000 sft.

3.16.3 Check Tests on In-Place Densities - One check test per lift for each 10,000 sq ft

3.16.4 Moisture Contents – Forgo this requirement as moisture testing will be done in situ multiple times per day.

3.16.5 Optimum Moisture and Laboratory Maximum Density – Two initial proctors, additional proctors performed if material changes. These tests take 3 days to perform and would be hugely detrimental to production.

10. Is this project tax exempt? Yes, Nebraska Tax Form 17 will be provided upon request.

11. Does contracting consider this to be a Jurisdictional Wetland? No

12. Is it anticipated that the contractor will be disturbing an area greater than 1 acre?

Contractor shall determine extents of proposed site disturbance and shall be responsible for SWPPP if disturbed area is in excess of 1 acre.

13. Is there an alternative POC for OPPD as the phone number provide sometimes comes up with an error and will not go through.

David Ortiz, Office 531.226.3396 Cell 402-599-9335 Alternate POC is Gavin Oestreich, Office: 531-226-6208; Cell: 573-721-3416

14. Can you provide a POC for AT&T fiber? Angelo Frangoulis, 402-294-5903

15. Are there abatement requirements for the roofing and transit panel roofing? See

Environmental sheets E101 and E202.

16. Will copies of the environmental survey reports be sent to bidders prior to the bid?

Attached

17. Has a lead TCLP test been performed to determine if the building debris will be considered a hazardous waste stream or is it the responsibility of the awarded contractor to perform the test? Bidders shall comply with all state laws, project drawings and specifications.

18. If the lead TCLP test passes does the lead remediation work need to be performed since it can at that point be disposed of as regular general demolition waste as part of the building waste stream? Hazardous material survey has been included with these responses.

Bidders shall comply with all state laws, project drawings and specifications.

19. The specifications state that the contractor’s PQP shall be onsite and perform daily area and personal air monitoring during asbestos abatement activities. Since this is an unoccupied building does the contractor’s PQP need to be onsite every day during roof abatement work or can the PQP just be onsite periodically and at the end of the roof abatement work to perform the clearance inspection? Hazardous material survey has been included with these responses. Bidders shall comply with all state laws, project drawings and specifications.

20. The spec references a Hazmat survey dated 2/28/2022, please make that survey available.

As of now there are no PCB quantities. Attached

21. What are the requirements / disqualifications for employee badging? Employees must have a valid license (REAL ID) or ID card (REAL ID) and registration for vehicles in which they are driving. They shall not have any warrants, outstanding child support or felony convictions on their record. Please note that this list may not be all inclusive.

22. Section: 02 82 00 ASBESTOS REMEDIATION: Are there roof core samples and photos available to determine the amount of asbestos containing materials versus non-asbestos containing materials that will need to be disposed of as hazardous materials, and how many previous roofs may exist? There are not roof core samples available. The number of previous roofs is unknown. Please bid the project IAW with the drawings and specifications contained in the solicitation. The Government can facilitate an additional site visit if contractors wish to access the roof.

23. If no roof core samples are available, can the number of existing roof systems be confirmed, including types, make-up, and thickness? No.

24. Has there been a structural analysis of the roof structure to determine that it is safe for personnel to work? No.

25. Section: 02 83 00 LEAD REMEDIATION: Has the listed lead material been tested to determine if the materials are regulated according to TCLP (Toxicity Characteristic Leaching Procedure), or will the lead materials require disposal as lead waste regardless?

Hazardous material survey has been included with these responses. Bidders shall comply with all state laws, project drawings and specifications.

26. Will we be able to utilize lane 5 to expedite the trucks entering base to hall demolition material away? Or will they need to each go through the search pit?

Use of lane 5 may be possible with coordination, but for bidding purposes, assume you will need to go through the search pit.

27. 02 41 00 2.1a states, “Fill material shall be waste products from demolition or deconstruction until all waste appropriate for this purpose is consumed.” Please confirm any sizing and/or testing requirements for use of demolition debris as backfill. This section of the specification is in error. No demolition debris shall be used as fill. All debris resulting from project activities shall be disposed off-base in accordance with all applicable state or federal laws.

28. 02 41 00 3.1.5 Please confirm any “unique” items that will require disposal outside of asbestos-containing materials. There is nothing specific to note at this time. If contractors wish an additional site visit to confirm prior to bidding, this can be arranged.

29. Nesting bird season is approximately Mar-Sep. Are contractors responsible for hiring a biologist to monitor for birds during abatement/demolition activities? Contractor shall take precautions they deem necessary to comply with state and federal law.

30. Can the superintendent be 'dual/tri-hatted' with the SSHO (and/or the CQC Manager)?

Or will 3 separate personnel be required: Superintendent, CQC Mgr, and SSHO?

Superintendent and CQC manager. The Superintendent and the CQC Manager positions can be dual hatted. SSHO position shall not be dual or triple hatted.

31. Will ‘environmental monitoring’ be required during asbestos abatement as per EM 385-1- 1 Section 06.C.03 (Page 6-9)? Note: this monitoring is in addition to required OSHA personnel air sampling and potential clearance air sampling. EM 385-1-1 is an Army Corps of Engineers document and is applicable to Army projects. As this is an Air Force project, this document is not applicable. Contractors shall comply with OSHA and state laws as required for all abatement activities.

32. Will clearance air sampling be required for each building after asbestos abatement, and prior to demolition as per EM 385-1-1 Section 06.B.05 (Page 92)? EM 385-1-1 is an Army Corps of Engineers document and is applicable to Army projects. As this is an Air

Force project, this document is not applicable. Contractors shall comply with OSHA and state laws as required for all abatement activities.

33. Will an engineering survey, by a registered PE, be required for this project as per EM 385-1-1 Section 23.A.01.a(1)? Note: this plan is in addition to the demolition/work plan.

EM 385-1-1 is an Army Corps of Engineers document and is applicable to Army projects.

As this is an Air Force project, this document is not applicable. Contractor shall comply with OSHA and state laws as required for all abatement activities.

34. Please provide details with regard to the dig permit submittal procedure and approval timeline. Contractor will need to supply pertinent project site details, coordinate the 811 and AF103 processes for utilities locates and acquire required signatures from appropriate offices before work can begin. This process usually takes around 2 weeks.

35. Will compaction (other than tamping with earth moving equipment) be required at any of the building demolition sites? 1 test per site at 1' lifts, 95% compaction standard proctor.

36. Drawings Sheet 6 – Note 8 states that the contractor shall provide drawings & GPS information indicating all changes in geometry, grades, elevations or material on the project. Does this mean that a professional survey is required after demolition? Means and methods on how the contractor meets the requirements of the contract are for the contractor to determine.

37. General – Regarding the building just to the North; excavating at a 1:1 from the basement of 404 would undermine the building to the North. Will the government allow a portion of the exterior wall to stay below grade (approximately 4’ below grade)? Or will contractors need to come up with a shoring system? The wall shall be demolished in its entirety. How this is accomplished shall be dictated by means and methods as determined by the contractor.

38. Clarify if contractors are to include material sales tax in the price, or if tax exemption will be provided. No, the project is tax exempt. A Nebraska Tax Form 17 will be provided upon request.

39. Confirm an as-built topo survey will be required after the completion of grading activities. Confirmed.

40. Confirm a site trailer for government use is not required. Confirmed, the Government does not need a trailer for our use.

41. Job Specification 00 10 00 (1.12)a. states: “Traffic control plans shall be developed by a Professional Traffic Operations Engineer (PTOE) and submitted prior to the start of any project work and shall allow a minimum of two weeks for review and approval/disapproval prior to the intended date of implementation. Any changes to the plan must be updated and submitted to the COR a minimum of two weeks before planned implementation for review and approval.” Is the Contractor required to cover the costs of a PTOE? While a traffic control plan will be required, it need not be developed by a Professional Traffic Operations Engineer. The scope of the road closures required by this project do not necessitate that level of engineering or associated costs.

42. Job Specification 02 82 00-14 (1.3.1) Description of Work states: “See Hazmat Survey dated February 28, 2022.” Can this survey be provided? See attached.

43. Job Specification 32 13 13.06 (3.7.8) Test for Pavement Thickness requires “Full depth cores of 4 inch diameter must be taken of concrete pavement every 500 square feet to measure thickness.” Can this be substituted with a form work inspection prior to the concrete pour? No. This will be required for pavement type P1, one core at each replaced parking/driveway area.

44. Job Specification 32 13 13.06 (1.5.2 Contractor Qualifications) states:

“Unless waived by the Contracting Officer, the Contractor must meet one of the following criteria:

a. Contractor must have at least one National Ready Mixed Concrete Association (NRMCA) certified concrete craftsman and at least one American Concrete Institute (ACI) Flatwork Finisher Certified craftsman on site, overseeing each placement crew during all concrete placement.

b. Contractor must have no less than three NRMCA certified concrete installers and at least two American Concrete Institute (ACI) Flatwork Finisher Certified installers, who must be on site working as members of each placement crew during all concrete placement.” Will these requirements be waived by the Contracting Officer? NRMCA qualifications listed are for “pervious concrete qualifications.” This requirement is waived by the Contracting Officer.

45. Is the concrete mis design for this contract intended to be “pervious concrete”? No, this is an error and can be disregarded.

46. Is the 2” max particle size in 2b applicable to the concrete rubble they plan on burying?

Export the rubble and bring in fill rather than crush and bury.

47. SECTION 33 82 00 TELECOMMUNICATIONS OUTSIDE PLANT. The work includes a reroute of a fiber path supporting the 55 SFS Wing alarm system from B404 and involves fiber optic splicing of cables. Does the contractor require a clearance (security clearance or other) to perform this work? There are only 2 cables left that go to B404 and none of which have IDS, so the contractor would not need a clearance. However, they would still need to coordinate with 55 CES as the cutovers will need to be done on the weekend.