RFI's_as_of_30_May.pdf

QUESTIONS AND ANSWERS FOR

SOLICITATION W912JV19B7001

Repair Maintenance Ramp Project No. KJAQ162682

Updated: 30 May 2019

Date: 16 May 2019

Question 1: Sheet GC001, Note 3 – V. states that Phase A is to be complete in 2019.

Does the Government have an anticipated notice to proceed date? With a NTP sometime in July likely at the earliest, it would put the concrete pavement aggregate production and QC testing to begin mid-July. Concrete paving mix trial studies and aggregate qualifications can take up to 120 days to complete once aggregates are available. These aggregates will need to be manufactured specifically for this project.

This timeline would mean we wouldn’t have an approved PCCP mix until November making Phase A completion timeline unobtainable.

Answer 1: We concur, with the advertisement being delayed until the end of April and an NTP resulting in a late June / early July NTP, there is not sufficient time to produce and test a mix design and still maintain the 2019 paving season.

Date: 16 May 2019

Question 2: Sheet CP414 – Would you please provide some clarification as to where these two details apply. Maybe there is a callout we have missed, but the area of the 12” PCCP is a bit unclear.

Answer 2. The 12” PCCP is for the Hangar Access Pavement areas which are North and South of Hangar 219 and west of the expansion joint separating these areas from the Main Apron Pavement section. The lower details calls out that the contractor is to protect the existing door rail slab, both rails and concrete where their work ties into these slabs.

DATE: 16 May 2019

Question 3: I have additional comments about the measurement and payment portions of the specifications that should be clarified prior to the solicitation due date. Based on Section 00010 – Solicitation Contract Form it appears the Government’s intent is to issue a lump sum contract for the base bid and the potential options. Several of the sections in the specification have language to indicate that the contractor will be paid on a unit price basis. However, there is no corresponding CLIN in Section 00010 – Solicitation Contract Form that relates to these unit price payment items. I found this discrepancy to exist in the specification sections outlined below.

1. Section 31 32 11 Soil Surface Erosion Control paragraph 1.2 and all sub paragraphs.

2. Section 32 01 11.51 Rubber and Paint Removal from Airfield Pavements paragraph 1.1 and all sub paragraphs.

3. Section 32 01 19 Field Molded Sealants for Sealing Joints in Rigid Pavements.

Paragraph 1.1.2.

4. Section 32 12 13 Bituminous Tack and Prime Coats, paragraph 1.1.1 and 1.1.2.

5. Section 32 16 13 Concrete Sidewalks and Curbs and Gutters, paragraph 1.1 and sub paragraphs.

6. Section 33 01 30.72 Relining Sewers paragraph 1.1.

Answer 3: Concur the Method of Measurement / Basis for Payment sections should be struck. Please see the attached revised specifications in case you want to issue them prior to the conformed set. This may not be necessary as the method of measurement and basis for payment sections have been struck in their entirety.

Attachment 1 revised Specs

DATE: 17 May 2019

Question 4: What are the dimensions of the fuel tank that is to be moved?

Answer 4: Tank is 7’-7”x 18’-0” and has a 6000 Gal capacity.

Question 5: What is the weight of the fuel tank?

Answer 5: Unkown

Question 6: Where is the tank to be moved to?

Answer 6: Tank will be moved to concrete pad approximately 200’ Southwest of the existing location.

Question 7: What product (fuel type) has the tank held?

Answer 7: Jet Fuel.

Question 8: Will the tank contain fuel when it is moved?

Answer 8: Tank will be empty at time of movement

Question 9: Does the tank have a foundation, if so how is the tank connected to the foundation?

Answer 9: The skid mounted tank is on a concrete slab

Question 10: Will the tank need a foundation in the location it is to be relocated to?

Answer 10: No

Question 11: Is the tank connected to fuel piping? If so, how is the tank connected to fuel piping?

Answer 11: Fuel tank piping is part of the skid mounted tank.

Question 12: Does the tank have a pump with an electrical connection? If so, what are the electrical requirements for the pump at the location the tank is to be relocated to?

Answer 12: Yes, contractor to relocate electrical service and lamp pole light.

DATE: 22 May 2019

Question 13: Would like to clarify that the Ready Mix producer would be allowed to design their own concrete mix design and run the trial batches for this project? Rather than have a independent lab design it.

Answer 13: Bid per specifications.

Question 14: How many acres or area will be provided for the portable concrete batch plant, stockpiles, and equipment?

Answer 14: 1.7 Acres will be available to this contractor.

Question 15: Will there be water available on site for the concrete batch plant as well as water for the aggregate stockpiles?

Answer 15: Existing water infrastructure as identified on the plans will be available to contractor. It is the contractor’s responsibility to coordinate with the utility company and responsible for tie in.

Question 16: Will there be power available for the concrete batch plant? Or will a generator be needed.

Answer 16: Existing power infrastructure as identified on the plans will be available to contractor. It is the contractor’s responsibility to coordinate with utility company and tie in.

Question 17: The slump for paving concrete is 2” slump. For some reason some paving concrete is to be delivered in redi mix trucks can the redi mix supplier have a slump of 2” +/- 1 inch or 1” to 3” slump as past projects?

Answer 17: This is not permitted. Redi Mix trucks may not be use to transport slip form pavement.

Question 18: If for some reason that concrete will need to be hand poured up close or along buildings or structures where a paving machine can’t get, will a midrange water reducer be allowed for a slump of 4”?

Answer 18: Airfield pavement maximum slump is maximum 2”.

DATE: 24 May 2019

Question 19: It’s clear in the contract documents that the Department of Army is classified as the generator and will sign the manifests for all hazardous waste materials.

Please clarify that the Department of Army is classified as the generator and will sign the manifests for all existing base contaminated soil and water (not classified as hazardous waste) that is to be disposed of offsite.

Answer 19: Department of the Air National Guard is classified as the generator and will sign the manifests.

Question 20: What will be the time frame the corrosion control contractor is expected to be onsite?

Answer 20: Period of performance for Corrosion Control is 365 calendar days.

Expected Notice to proceed September 2019. Expect coordination with Corrosion Control contractor through calendar year 2020.

Question 21: Please confirm that the property listed below (excerpt from Section 31 05 21, pg. 4) is correct. It would seem the specification should read 670 lbs/FOOT not lbs/INCH.

Note that 670 lbs/ft would seem appropriate and common for this subgrade application.

Answer 21: That is correct, It should be 670 lb/ foot.

Question 22: Sheet CP502 Deatail B7 calls out tie bar. Please clarify size.

Answer 22: The tie bar need to be the same size as the dowel bars. 1” Bar (#8) 20” long at 15” spacings. .

Question 23: Sheet CP503 Detail A7 Typical Dowel Bar basket. No joint types reference a dowled contraction joint. Please clarify the intent dowl bar basket detail.

Answer 23: As for the dowel bar baskets those are required if the contractor elects to do double lane paving. The baskets would be need to run down the contraction joint that would midway between the panels. If the contractor does not elect to pave double lanes than they are not needed.

Question 24: Section 32 01 11.51 Rubber and Paint Removal from Airfield Pavements does not appear to show up in the drawings anywhere? Are there portions outside of the demolished pavements where coatings are to be removed? If so, where are they shown.

Please advise.

Answer 24: Paint removal is required for the re-striping of the various marking configurations due to phasing and permanent conditions.

Question 25: In reviewing the contract specifications, reference is made to Relining Sewer work ( Section 33 01 30.72). We are unable to find any work in the contract documents related to this specification section. Please confirm there is no Relining Sewers work in this contract.

Answer 25: The existing sewer line running beneath BLDG 325 shall be relined between structures JB B1 and DI B2.