Att_12_P8419R0002_Q-A-Part2.pdf

SOLICITATION NO. 140P8419R0002

HISTORIC JAIL RESTORATION

WORLD WAR II VALOR IN THE PACIFIC NATIONAL MONUMENT, TULE LAKE UNIT

MODOC COUNTY, CALIFORNIA

QUESTIONS AND ANSWERS (continued):

Q10: Re: Option C Utilities – Is the concrete pad for the propane tank to be considered part of the base bid or part of line item 7, Option C?

A10: Include all miscellaneous work associated with providing a functioning propane tank and delivery system to the building under Contract Line Item 7, Option C.

Q11: Re: Option C Utilities – Plan sheet E1.1 calls for coordinating with the local utility company for the transformer, pole, metered panel, and service to the building. Are utility connection fees to be considered part of line item 7, Option C, or utility connection fees being paid by the National Park Service?

A11: Utility connection fees shall be paid by the National Park Service.

Q12: Re: Lead Paint Scope – A section 02 26 00 which includes Lead Abatement was provided along with extensive references to lead abatement in section 02 83 33. The general summary of work and the plans do not indicate that the project is to be a lead abatement project, nor do they indicate what lead onsite is to be abated nor to what level. What is specifically required for lead paint removal and other lead removal under this solicitation?

A12: Section 00 31 26 Existing hazardous material information, paragraph 1.3 B Lead hazards describes the materials tested and not tested, the resulting findings and instructions on treatment for untested materials. This report of findings is available to you upon request – please contact Alanna_Gardner@nps.gov to obtain a copy.

Q13: Re: Lifted Roof Repair Note: Is detail (2) on S4.0 only applicable to the lifted roof repair, or is it to be applied to other areas as well?

A13: detail 2/S4.0 applies only to the lifted roof repair. Note that it does reference the eave repair detail 3/S4.0. The work referenced by these details can be found on the structural plan and elevation sheets, as well as in the written notes on the general structural sheet.

Q14: It appears that a conditions assessment and testing of treatments were undertaken for the historic graffiti. Can NPS make available the condition assessment report (or at least site photos) for the historic graffiti?

A14: Yes – this is available to you upon request (due to the large file size) – please contact Alanna_Gardner@nps.gov to obtain a copy.

Q15: Specification section 01 11 00-1.3.B – In what condition are the Government Furnished steel products. Are the cell doors intact with all hinges and hardware? Are they still assembled? It would be useful if an invitatory and/or pictures of the supplied items could be provided.

A15: See sheets A2.1, A2.3 for door schedule, existing conditions and description of work. See sheets A2.1 and A2.4 for window schedule, existing conditions and description of work. Government furnished metal items were made available for viewing at the November 16, 2018 site visit. Photos from that site visit were made available via Amendment 0001 to the Solicitation. As stated previously via Amendment 0001, a second site visit opportunity is available this week (through December 7, 2018) to be scheduled upon request via Alanna_Gardner@nps.gov.

Q16: Specification section 01 11 00-1.3.B – Could you provide pictures of the antique plumbing fixtures so to understand what attachment fabrications are required?

A16: The shower heads will be similar to the item pictured directly below this text. It will be the head only, no arm, and will require just a threaded end on the new curved pipe shown in 3,6/A4.2.

Figure A16: government furnished shower head

Q17: Re: Chain Link Fence Disposition – Is the Interior chain link fence which is scheduled for demolition to be transported to the Caltrans Maintenance Station, of is it to be disposed of?

A17: Do not salvage chain link fence. Demolish, remove off site and properly dispose.

Q18: Re: Conservator Scope – The summary of work for the project states that the consolidation of historic graffiti as recommended by the conservator. Section 09 01 90 paragraph 1.2.a calls for the consolidation of historic graffiti to be as directed by a qualified Project Conservator. Section 09 01 90 paragraph 1.3.b calls for ‘Conservator shall treat graffiti locations’. Is the Conservator to perform, provide a plan, or direct the paint conservation?

A18: See sheets A5.1-A5.54 for further description of Conservator work.

Q19: Re: Conservator Scope – Is the Conservator to perform, provide a plan, or direct the cleaning at graffiti locations?

A19: See sheets A5.1-A5.54 for further description of Conservator work.

Q20: Re: Exterior Parge – Section 09 97 26 calls for the use of modern Sikatop for exterior parging. This specification also calls for mockups so as to match existing surfaces. If this product does not allow for matching the historic unpainted parge finish, what other products will be acceptable?

A20: See also, notes and general instructions on Sheet A2.1. For bidding purposes assume the specified product will work. Any changes will be addressed when determined to be required, and will be made per the Changes clause.

Q21: Re: Existing Steel Structure Removal – The plans call for the removal of the existing steel structure’s concrete footers. Is there a detail or plan on the construction of those piers and footers?

A21: No construction details are available. Assume 2x2 square and buried 24 inches below grade, #5 reinforcing bar each way.

Q22: Re: Existing Steel Structure Removal – Is there data or an erection plan regarding the existing structure that can be provided?

A22: No.

Q23: Drawing E7.1 along with the specifications is calling for only one manufacture.

This is called for as Notifier. Is an equal manufacture acceptable?

A23: Prepare the bid per the specified equipment. Consideration of an equal product substitution would be made during post-award submittal reviews.

Q24: Are there any photos of the site that can be shared for pricing?

A24: Photos taken during the November 16, 2018 site visit were made available via Amendment 0001 to the Solicitation. Additional photos are included in this Amendment 0002. Although not mandatory, it is highly encouraged to make a site visit to inform your proposal. As stated previously via Amendment 0001, a second site visit opportunity is available this week (through December 7, 2018) to be scheduled upon request via Alanna_Gardner@nps.gov.

Q25: Re: Window Bars – For the window bars that are to be installed is it the intent to match the texture and pattern on the historic reinforcement bar or will a modern reinforcement texture be acceptable?

A25: Match the existing bar pattern and diameter. The ribs are horizontal and comparable products appear to be available. The existing bars were cut out so are too short for reuse, but should be matched.

Q26: Re: Concrete Mix – The specification calls for the use of 30% fly ash for this project. Can the requirement for fly ash in the mix design be eliminated given the small quantities of concrete being utilized?

A26: See the Structural sheet S.1.1 General Notes. The structural engineer specifically asked for ready-mix for the superior quality control. Market research indicates that there are several concrete suppliers in Klamath Falls area that could easily supply concrete with fly ash.

Q27: Re: Concrete Mix – Would the use of concrete mixed onsite be considered in lieu of ready mix being delivered given the time required for delivery and the small quantities of concrete being utilized?

A27: See the Structural sheet S.1.1 General Notes. The requirements are for ready mix for the roof eave. An alternate site mix would be considered for interior concrete repairs only, provided the details for obtaining the required quality of site mixed concrete was a bagged product with product data stating it would achieve a minimum 4500 psi (higher than we need for strength, but needed for better freeze-thaw resistance, other mix design objectives such as air-entrainment, etc., and quality assurance and control measures verified by independent party such as a procedure for measuring the water, and mixing.

Note that Government Sustainability requirements generally require 25% minimum fly ash, and the structural engineer is unaware of a job-mixed product that would meet this requirement at this strength. Note that recycled concrete as aggregate would also not be acceptable.

Q28: Can the bid date be extended? The PPQ requirement for subcontractors is new to many of them and is being problematic.

A28: Amendment 0002 extends the proposal due date to Friday, December 14, 2018 by 3:00 p.m. Pacific Standard Time.

Q29: When we deliver the dismantled metal canopy building to CalTrans, are we just offloading in their yard, or should we factor in having to move it into a building?

A29: Off load in CalTrans yard to the location identified by them. There is no expectation for moving it around within the compound.

Q30: Does the NPS know how big the existing footings are for the metal canopy building?

A30: See Q21. No construction details are available. Assume 2x2 square and buried 24 inches below grade, #5 reinforcing bar each way.

Q31: How deep (average) are the spalls in the concrete roof? The terms “spalls” meaning across the horizontal surface of the top of the roof – cracks that turn to holes because of the decaying concrete. Looking for an average depth of the concrete spalls?

A31: Concrete on the roof eaves is completely through the roof section, exposing the reinforcing bars. There is concrete damage at the area where the wall and roof were separated during an attempted demolition. The extent of damaged concrete is not really known there. The contract requires insulation and roofing materials on top of the concrete. Except for the losses at the eaves, the spalls on the roof are “loose surface area” per S2.1 and have limited depth. See photo below:

Q32: Is it permissible to take the metal doors, bed frames off-site to a fabrication shop for restoration? If so, are there any special inspections by the government required, or can our quality control manager document and provide daily reports with photographs to document work performed off site?

A32: Yes, the metal materials can be removed and treated off site. Offerors should address details of this proposal in their Technical Approach narrative they are required to submit with their proposal package. A chain of custody of each item would be advisable, and QA/QC reports would be welcomed plan of action.

Q33: Sheet S2.1 Floor Plan Keynote 21 states to “Provide bars at all (13) detention area awning windows, see window schedule and details”. Can the bars that were removed and stockpiled in the NPS storage area be reused or will the new ones to match existing be required.

A33: See Q25. Match the existing bar pattern and diameter. The ribs are horizontal and comparable products appear to be available. The existing bars were cut out so are assumed too short for reuse, but shall be matched.

Q34: Detail 3 on sheet S4.0 states to “re-bend ( E ) bars to provide min 2” clear to soffit.

During the site visit it did not appear that this would be possible without a substantial amount of demolition to expose all of the rebar hooks on the roof deck. Please confirm the minimum clearance to soffit.

A34: This is applicable to bars that are fully exposed or that become exposed when loose soffit concrete is removed. The bars that are partially embedded in sound concrete may remain as they are, but they must be cleaned and coated with the anti-corrosion coating.

Q35: The solicitation does not clarify if there is to be weather-stripping at the exterior windows. Please clarify if weather-stripping at the windows is required.

A35: See sheet A2.4. Weather stripping is not required.

Q36: The specification states that the new window and door material must be FSC Certified lumber. Please clarify if domestic lumber that is not FSC Certified is acceptable for this project.

A36: FSC certified lumber is required.

Q37: Please clarify if the eave repair shown on sheet S4.0 Detail 3 is to receive a parge coat to match the vertical exterior wall parge coat repair.

A37: Yes.

Q38: The detail for the radiant ceiling assembly on sheet A9.2 does not include direction of how the gypsum base with veneer plaster finish is to be terminated at the vertical walls. Please provide a detail showing the new stucco finish to vertical wall at the perimeters.

A38: For purposes of bidding you may plan on a paintable sealant joint.

Q39: When conducting the epoxy injection crack repair, the material will always flow to the path of least resistance. If a crack is located at or near historic graffiti, please clarify how the contractor is to stop the flow of epoxy injection material were the crack cannot be sealed.

A39: This is a requirement of the contractor to determine the means and methods for protecting the graffiti, and should be included in the Offeror’s Technical Approach narrative they are required to submit with their proposal package.

One possible technique could be to use a more viscous and quick curing injection material at the port nearest the graffiti. We have repeated the relevant notes from the drawings below. S1.1 b protection of graffiti note 1: “where crack repair locations indicated (see below) conflict with the existing graffiti, terminate crack repair preparation 6 inches from the graffiti. Injection ports shall be located no closer than 9 inches from the graffiti.” S1.1 d epoxy injection crack repair note 2: “procedures and material shall be selected to minimize spillage, staining or any other kind of marking on the existing surfaces”.

Q40: The solicitation does not address any repair of the exterior walls below grade.

Please clarify how damaged material below grade will be addressed.

A40: No repairs were identified as continuing below grade. Any repairs subsequently identified as needed below grade shall be considered as extra work. If differing conditions are found and require to be addressed, they will be made as a modification under the changes clause.

Q41: During the site visit on it was discovered that there is a large stove in the administration room that is not shown in the drawings. Please clarify what is to be done with the existing stove.

A41: This stove is not part of this project work. Salvage and deliver to NPS at storage building on adjacent lot.

Q42: The contract bid schedule does not clearly define what scope of work items are be allocated to each CLIN. Please clarify.

A42: See Project Specifications section 01 27 00, Definition of Contract Line Items.

Q43: The Standard Form 30 provided in Amendment 01 provided 11/30/18 states that another amendment will follow early next week with answers to remaining question which are currently under review. The standard form 30 also stated that the due date has remained unchanged. Please confirm that the due date of the proposal remains unchanged.

A43: Amendment 0002 extends the proposal due date to Friday, December 14, 2018 by 3:00 p.m. Pacific Standard Time.

Q44: Can the government please provide a drawing or historic photo showing the previous configuration of the bunk beds including how they are assembled in order to accurately recreate the additional bunks required?

A44: The statement on A2.1 is the scope for the bunks, the 8” x 1-3/4” bar are mounting brackets and are the main additive piece. After the bar is welded to the frame it is bolted to the existing angles protruding from the walls and a chain goes from the outer edge to a set of upper angles protruding from the wall. Photos provided for more information.

Figure A44.a: Historic photo of TULE NHL and showing bunk installation.

Figure A44.b: government furnished bed frame for treatment and reinstallation

Figure A44.c: example of matching army surplus bed frame to be modified to be wall hung.

Q45: Due to the extent of damaged material at the existing soffit it would be more efficient and cost effective to sawcut and remove bad portions of the soffit and then epoxy dowel in new rebar to the existing concrete roof. The replacement soffit can then be formed and poured to match the original appearance. Please clarify if this method of repair would be acceptable.

A45: No, not acceptable – this is a thin cantilevered element and the drilling for doweling could be very problematic. Please bid as designed.

Q46: Sheet S4.0 detail 6 states to hand ship for cementitious surface seal. Can the preparation of cracks to receive the surface seal and ports be done by mechanical means?

A46: No, not acceptable. Please bid as designed.

Q47: General note 2 on sheet S1.1 states that “the contract structural drawings and specifications represent the finished work. Contractor shall be responsible for means and methods of construction including but not limited to shoring and bracing of the existing roof structure” Please confirm that the shoring and bracing is for construction purposes only and there are no structural modifications other than the concrete spall repair and epoxy injection.

A47: Yes - that is correct. Shoring and bracing for construction as the contractor determines necessary. Including epoxy injection process.

HOWEVER - there are other concrete repairs to the wall - roof connection, and rebuild of the wall and lintel at south windows in the admin area (see Sheet S3.1, and detail 4/S4.0). See sheet A2.2 , S1.1 Notes Titled "lifted roof repair". This is generally in the SW building corner, Sheet S2.1 Row: column E:1.

Q48: There are multiple locations throughout the specification where minimum temperature is required to complete the cleaning, concrete placement, concrete spall repair, building flush out, building ventilation period, veneer plaster installation, painting and coating, and parge coat application. The building is located in an area where it is rarely above 50 degrees for a 24 hour period which is required for many of the above mentioned construction tasks. Please clarify how this temperature requirement is to be addressed by the contractor if the weather conditions will not allow the work to be completed within the contract requirements.

A48: For periods of time when temperatures are not suitable, the contractor shall propose means and methods for maintaining required temperatures for the required work. Offerors should include such details in their Technical Approach narrative they are required to submit with their proposal package.

Q49: What is the final date we may submit questions regarding this solicitation?

A49: With Amendment 0002 extending the proposal due date to Friday, December 14, 2018 by 3:00 p.m. Pacific Standard Time, we will accept any additional questions received in writing no later than Monday, December 10, 2018 by 5:00 p.m. Pacific Standard Time. Send written inquiries to Alanna_Gardner@nps.gov. Questions and/or comments received after this time may or may not be addressed prior to the solicitation closing date.

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