Amendment 0009.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

Design-Bid-Build P898, Replace Pier 32 at NAVSUBASE New London, CT

The purpose of this amendment is as follow s:

1. Provide responses to PPIs;

2. Provide Table regarding Draw ing and Specification Changes (be advised that table informs about draw ings and specification changes).

Revised draw ings to be provided prior to construction. No draw ings are provided w ith this amendment.

POC: Gary Milton; gary.milton1@navy.mil;

SEE BLOCK 14 CONTINUATION PAGE

1. CONTRACT ID CODE PAGE OF PAGES

J 1 43

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 29-May-2020

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X N4008520R0037

X 9B. DATED (SEE ITEM 11)

07-Apr-2020

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

29-May-2020

CODE

NAVFAC MID ATLANTIC

ACQUISITION CORE

9324 VIRGINIA AVENUE

NORFOLK VA 23511-3095

N40085 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N4008520R0037

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

BLOCK 14 CONTINUATION PAGE

The purpose of this amendment is to provide the following:

1. Response to PPIs

2. Table - P898 Drawing and Specification Changes (be advised that table informs about drawings and specification changes). There are no drawings provided with this amendment. Revised drawings to be provided prior to construction.

3. Be advised there is no PPI# 33.

1. Response to PPIs

PPI

Date

Submitted Reference Question Response

Leave Blank

Page

Section Paragraph

21 04/27/20 In order to submit a competitive and responsible proposal to NAVFAC, Walsh Constructin Company II, LLC respectfully requests a minimum 3 week bid date extension for the P898 Replace Pier 32 at Naval Submarine Base, New London, CT Design Build project.

See Amendment 0008

22 04/29/20 s-121 When does the

NAVFAC

anticipate relocating the security barrier?

Will this be at the start of construction?

Response to be provided in a future Amendment

23 04/29/20 G-111 Per the solicitation, No.

N4008520R0037, the contract duration is indicated as 757 days. Phase One is noted to start 10/2020, base contract work is phased out to end at the completion of the dredging window 02/2023.

Please confirm that the 757 days if for completion of Pier 32 and the dredging south of pier 32 can be completed during the 2022/23 dredging window?

Base Bid CLIN 001, plus any combination of the following options -CLINs 006, 007, and 008 must be completed by 12/30/2022. Options including Pier 10, 17 – CLINs 002, 003, and 004 will have an additional 545 days to complete those options. In all cases the Base Bid and any combination of CLINs 006,007,and 008 must be completed by 12/30/2022

24 04/29/20 G-106 Will the area North of the existing pier 32 to the new pier 32 be accessible to the contractor for the duration of the new construction and the demolition of the existing pier 32?

Response to be provided in a future Amendment

25 04/29/20 G-106 Will the area North of the new pier 32 inside of the security barriers designeated as the dredging area be accessible for contractor barges and equipment though the completion of phase 5?

Response to be provided in a future Amendment

26 04/29/20 6 31 63 29 1.7.1 Due to the lengths of the rebar cages required for this project needing to come in multiple pieces and needing to be spliced in place will the Navy consider concrete placement needing to be within 48 hours of rebar cage install?

Concrete placement shall be within 48 hours of excavation completion. Immediately prior to reinforcing bar placement the bottom of the drilled shaft shall checked for sediment in accordance with 31 63 29 Paragraph 3.2.7.

27 04/29/20 6 31 63 29 1.7.2 Due to the lengths of the rebar cages required for this project needing to come in multiple pieces and needing to be spliced in place, as well as schedule requirments, will the Navy consider concrete placement needing to be within 48 hours of shaft inspection and acceptance?

Concrete placement shall be within 48 hours of excavation completion. Immediately prior to reinforcing bar placement the bottom of the drilled shaft shall checked for sediment in accordance with 31 63 29 Paragraph 3.2.7.

28 04/29/20 14 Spec. 31 63 29

3.4.2 TIP testing can be

performed using probes in the CSL tubes rather than using wires. Is this TIP testing alternate allowed for the drilled shafts?

This TIP testing may be offered as an alternative to separate wires for TIP testing provided that the testing procedure is not compromised in any way.

29 04/29/20 SD-104,

S-112' S-113' S-114

Drawings Drawing SD-104, Note 5 says to remove and relocate the tidal risers and spill boom to the new pier 32 and references drawings S-112, S-113 & S-

114. Looking at those drawings, they call out the Tidal Risers as "typical" and there is no notes about the spill boom.

Further, we cannot find any details on these components regarding what they look like, how they mount, etc. We request more details on these components. Is there enough on the existing Pier 32 to relocate to the new pier without having to furnish more?

Contractor to remove and salvage all existing tidal risers on existing Pier 32 and on the bulkhead adjacent to the existing Pier 32 and reinstall them on the new Pier 32 in a similar manner and layout.

Total number of tidal risers on new Pier 32 is to match current number found on existing Pier

32. Tidal risers consist of an aluminum vertical wide flange guide beam installed on the pier structure (mounted to the fender piles with lag bolts) as well as an aluminum frame with rollers that connects to the spill boom and allows for vertical freedom of movement of the spill boom at its attachment point to the pier. Existing tidal risers are manufactured by Elastec, see attached photo listed below in this amendment– Existing Tidal Riser.

30 04/29/20 S-112' S-113' S-114, S-550

Drawings Please clarify what type of material that the 2"Hx6"LG scupper drains are to be made from.

They are shown on Drawings S-112, S- 113, S-114 and S- 550, but there are no details. Are these an embedded unit or are they simply blockouts in the concrete? We don't see it specified in the specifications nor drawings.

The 2"Hx6"LG scupper drains along the cast-in-place concrete curb shown on Drawings S-112, S-113, S-114 and S-550 are simply blockouts through the curb.

31 04/29/20 6 Spec. 31 63 29

1.7.1 Referring to

Question #13 Answer provided in Addendum #5, as well as Specification 31 63 29 paragraph 1.7.1, Page 6, please confirm that disposal of the spoils from driven pile cleanout and drilled shafts is permitted and allowed to be disposed of in the CAD cell.

Bid Per RFP

32 05/01/20 4 Spec 06 71

2.1 Will the client pre-

approve the Axion Structural Plastic Lumber product to use for the Fender system Chocks, wales and blocks?

Data Attached.

Bid Per RFP

34 05/01/20 S-550 Drawings Detail A1 We have been told by a supplier that they have supplied fiberglass ladders on other Navy projects. Would fiberglass ladders be pre-approved during the bid phase in lieu of Steel ladders?

Bid Per RFP

35 05/01/20 Addendum #5

Q16 Referencing the reply to Question 16 of addendum #5 and the Owner's response, may quantity of TIP wires also be reduced? ASTM only recommends 1 TIP wire per 1FT of diameter. The drawing notes on S- 002, require 8 TIP wires.

The number of TIP wires may be reduced to industry standards of 1 wire per 1 ft of diameter of shaft.

36 05/01/20 8 SF1442

Section 00100

-1 Given the construction disciplines required for this project and the relatively few projects of this magnitude and complexity that have been performed over the last 10 years in the U.S., we respectfully request that the requirement for project experience to have occurred within he past 10 years be extended to 15 years for which project experience can be submitted and count toward evaluation.

No

37 05/01/20 S-002 of dwg

6 of spec

Drawings

31 63 29

Note 6 of dwg.

1.7 of Spec.

Note 6 under Drilled Shaft section on Drawing S-002 says to place concrete a maximum of 48 hours after completion of the drilling of the rock socket. The Specifications for Drilled Shafts say placing of reinforcing and concrete is to occur the same day as the drilling and that we are not allowed to keep excavations open overnight.

The specs also say that concrete shall be placed within 3

Concrete placement shall be within 48 hours of excavation completion. Immediately prior to reinforcing bar placement the bottom of the drilled shaft shall checked for sediment in accordance with 31 63 29 Paragraph 3.2.7.

hours after approval by the CO of the completed excavation. The language appears to be conflicting.

Please provide clarification.

38 05/01/20 9 Solicitatio n

1 The solicitation document states "Experience of proposed subcontractor will not be considered.

Furthermore, the offeror’s experience as a subcontractor will not be considered.”

Proposer requests the Owner allow for the experience of key subcontractors be considered as applicable and allowable under Factors 1 – 4 if there is a demonstration of commitment by the subcontractor to the Proposer as a “dedicated subcontractor”.

This is requested as potential subcontractors can demonstrate a higher level of experience for the elements within their core competency (example: drilled shafts / rock sockets, industrial grade mechanical

No and electrical utility services), but may not be willing to take contractual risk as a joint venture partner.

39 05/06/20 1 of 57 SF1442 Section 13 We respectfully ask that you reconsider a bid date extension. Many of our potential specialty subcontractors are now asking for a time extension as well since there are a lot of details to work through.

See Amendment 0008

40 05/06/20 14 100 4.2.3 Please consider amending the solicitation to allow for electronic submission of Price Proposal and Non- Cost/Price Proposal in lieu of 3-ring binders delivered to Norfolk, VA

See Amendment 0008 regarding Proposal Delivery Instructions

41 05/06/20 2 05 05 23.16

1.3.1 Spec 05 05 23.16 -

Does the AISC shop certification requirement cited in the specification for Structural Welding (para. 1.3.1) also apply for shops providing Miscellaneous Metals (Spec 05 50 13)?

Yes, the ASIC shop certification identified in Specification Section 05 05 23.16 (Paragraph 1.3.1) also applies to the Miscellaneous Metals Specification (05 50 13).

42 05/06/20 S-115 & S-117 Please provide a drawing and/or specification for the Tidal Risers identified on the Pier plan drawings.

Existing tidal risers are manufactured by Elastec ( Tidal Compensators in their product literature). See attached photo listed below in this amendment– Elastec Tidal Compensator.

43 05/06/20 S-515 The 12x12 reinforced lumber chocks (shown in C1, eg.) are shown cut to fit radius of pile. Typically these would be square cut. Is it the intent to have these custom cut to fit pile radius or can they be square cut to fit tight between pile?

The 12x12 fiberglass reinforced plastic lumber chocks are to be square cut.

44 05/06/20 Will vessels entering and existing the submarine gates be subject to inspection by Navy personnel and/or dogs? If so, how much time should the dredge contractor allot for the inspection of a vessel? Are there any costs associated with these inspections?

Response to be provided in a future Amendment

45 05/06/20 Is the dredge contractor allowed to spud down in the CAD cell during dredge and cap placement activities?

Bid per RFP. Capping material will be placed using a tremie pipe that deposits the material directly on the bottom to reduce sediment suspension and mixing with previously placed material.

46 05/06/20 Is there a maximum distance that the tremie pipe can be raised above the mudline during placement activities?

Bid per RFP. Capping material will be placed using a tremie pipe that deposits the material directly on the bottom to reduce sediment suspension and mixing with previously placed material.

47 05/06/20 In the event that post-placement surveys of the CAD cell indicate that the top 2’ of material has spread out in the CAD cell during placement over an area where there is not sufficient remaining “cap” material within the window to cover the area in the cell with 2’ of material, will the dredge contractor be responsible for dredging additional material from the limits of the CAD cell as the permits indicate? How would the dredge contractor be compensated for such additional dredging (and placement) if this occurs?

Bid per RFP

48 05/06/20 9 31 62 16.19

3.4.5 Per this spec

section, "Do not drive piles within 100 feet of cocnrete less than 7 days old." Does this pertain to pile plug/ drilled shaft concrete or just the pile caps and slab?

The requirement to not drive piles within 100 feet of concrete less than 7 days old applies to all concrete construction including pile plugs and drilled shafts.

49 05/06/20 9 31 62 16.19

3.4.5 Per this spec

section, "Do not drive piles within 100 feet of cocnrete less than 7 days old." Should this pertain to pile plug and drilled shaft cocnrete will the Navy consider reducing the distance to 25 feet from pile plug and drilled shaft

Following up on Item #48 above, it would be considered to reduce the distance restriction for pile driving and new concrete construction associated with pile plugs and drilled shafts to 25-feet so long as the new concrete is at least 3 days old.

concrete less than 7 days old?

50 05/06/20 9 31 62 16.19

3.4.5 Does this

specification pertain to drilling of rock sockets or just pile driving?

Please clarify question. Section

3.4.5 is labelled Pile Driving and pertains specifically to pile driving.

51 05/06/20 Due to the complex nature of this project, please provide a 2 week extension to the bid due date.

See Amendment 0008

52 05/07/20 1 SF1442 13.A In order to submit a competitive and responsible proposal to NAVFAC, we respectfully request a minimum 4 week bid date extension for the P898 Replace Pier 32 at Naval Submarine Base, New London, CT Design Build project.

See Amendment 0008

53 05/05/20 M-501, M-601 (drawings)

Drawings

Spec. 22 15 14.00

2.1.1.1 of Spec. Referencing drawing M-501 Detail C1 & B4, drawing M-601, and specification Section 22 15 14.00 40 under 2.2.1.1 Compressed-Air Receivers & 2.2.2 Air Compressors.

On drawing M-501 and under 2.2.2 Air Compressors of the spec, it calls for desiccant air dryers, but the schedule on drawing M-601 calls for refrigerated air dryers. On drawing M-501 it calls for one 660 gal. air receiver to be shared for both air compressors, but the schedule on drawing M-601 calls for each compressor to have it’s own. Please confirm which type of air dryer is to be used and the quantity of 660 gal.

air receiver tanks.

Note that the design intent for the compressed air system is to have one 660 gallon storage tank and one desiccant air dryer.

Drawing M-601, AIR

COMPRESSOR

PERFORMANCE SCHEDULE,

is hereby revised to indicate one 660 gallon storage tank. On Drawing M-601, AIR

COMPRESSOR

PERFORMANCE SCHEDULE,

at Note No. 2, delete, "

PROVIDE INTEGRAL AIR

TREATMENT -DUAL

FILTRATION AND

REFRIGERATED AIR

DRYER" and insert, "PROVIDE KAD PS 260

HEATLESS DESICCANT

DRYER WITH OPTION "A"

FILTER OPTION." Refer to the Drawing and Specification Changes Table.

54 05/05/20 327 to 363 Volume 1 Specificati ons

It has come to our attention that portions of the specifications included in the P- 409 solicitation contain a section marked “For Official Use Only”, “Export Controlled”. The portions of the specifications that we are aware of with this language is located in Volume 1 of the Specifications on pages 327 to 363.

In an effort to move forward on our price proposal development efforts, we are beginning communication with potential subcontractors and suppliers. We are requesting direction how to handle these documents, if any special care is to be taken.

Response to be provided in a future Amendment

55 05/08/20 6 Spec.

35 51

14.00 20

2.3.5 Referencing Spec

Section 35 51 14.00 20 “Brow and Platform” under

2.3.5 Roller Wheels

on page 6, it says the required minimum load capacity for each wheel to be 61,000 lbs. Please confirm this is correct and not a typo.

Required minimum load capacity for each wheel should be 9,000 lb. The minimum load capacity referenced in the specification is an error. Refer to the Drawing and Specification Changes Table.

56 05/08/20 Dwg M-

Regarding Bid Option 6: Drawing M-101 shows the enclosure dimensions for the air compression system to have a height of 10 ft.

According to vendors the standard height of a 660 gal. receiver is just under 11 ft.

Can the height of the enclosure be greater than 10 ft or does the 660 gal.

receiver need to be custom made?

Shortening the height of the tank will increase the diameter.

Given the enclosure height limitation of 10 feet, the air reciever tank is hereby revised to one 400 gallon air tank from one 660 gallon air tank. The approximate maximum height of the 400 gallon air tank is 104 inches. Coordinate and ensure that the single 400 gallon tank will fit, as one unit, through the enclosure entrance door.

Drawings M-101, M-501 and M-601 are hereby revised and shall change any air storage tank references from 660 gallons to one 400 gallon tank. Coordinate this response with the response to PPI No. 53 to read one 400 gallon tank in place of any reference to a 660 gallon tank.

Refer to the Drawing and Specification Changes Table.

57 05/08/20 Spec.

22 15

14.00 40

2.4.2.5 Regarding Bid

Option 6:

Referencing the Service Compressed-Air Systems Low Pressure Spec Section 22 15 14.00 40 under 2.4.2.5 Supplementary Steel, it says to refer to structural drawings and specifications. We have not seen any structural drawings in reference to the compressed-air system house.

Please advise.

Within SECTION 22 15 14.00 40, delete the entire sub-paragraph and text, " 2.4.2.5 Supplementary Steel, Refer to structural drawings and specifications." Refer to the Drawing and Specification Changes Table.

58 05/08/20 Note 11 under "Concrete

Notes"

Dwg S-

Drawing notes for concrete say to provide joints as detailed and specified. No additional joints to be used nor omitted except by written authorization. We don't see any joints specified or detailed in the drawings, specifically for the Caps and Beams.

Please clarify whether construction joints

Construction joints are allowed to break up the cap and beam concrete pours. Contractor to include proposed construction joint layout in shop drawings for review and approval.

are allowed to break up the cap and beam pours.

59 05/08/20 Addendum #7

Regarding Addendum #7 delivery requirements, please confirm that the 1 "original" and 1 "copy" applies for both the "Price Proposal" and the "Non-Price Proposal". Please also confirm that scanned copies of documents such as Bonds and those containing signatures are acceptable with originals being mailed (in other words - electronic bonds and signatures are not required for the electronic submission).

one (1) original and one (1) copy apply for both Price and Non-Price Proposal. Electronic bonds with signatures are required. Bonds shall be submitted with electronic version of proposal as they shall be submitted with hard copies.

60 05/07/20 Marine concrete specification 03 31 30 Section 1.8.2 indicates a max slump of 8”. ACI

336.1 (which the project specifications reference) allow for up to a 9” slump. Please revise the project specification to allow for a higher slump.

A slump of 9" is allowable for the marine concrete in accordance with ACI 336.1.

Refer to the Drawing and

61 05/07/20 Drawings SD 304 and SD 105 indicate existing battered piles that remain. Please confirm that they are not in conflict with the new shafts for the Crane Weight Test area. If they are please advise if they can be removed and/or temporary means to support the existing sheet pile wall (e.g. dead man) can be used? If so please provide details for this option.

If a conflict between an existing battered H-Pile and a new drilled shaft is encountered at the Crane Weight Test Area and/or the Pier 32 Utility Vault, the contractor will be allowed to shift the drilled shafts and bent location slightly to avoid the interference.

62 05/07/20 Under Note 7 “Foundation Notes

– Drilled Concrete Shafts” please confirm “verification of bedrock properties” refers to bottom cleanliness as verified with a mini-sid device. If not please provide further clarification on “bedrock properties” to further inspect/verify.

Confirmed: “verification of bedrock properties” refers to bottom cleanliness as verified with a mini-sid device.

63 05/07/20 We do not see any welding requirements within specification 31 63 29 subsection

3.2.5. Can we

assume that the casing is “non-structural” and therefore casing field splicing can be performed using qualified welders per AWS D1.1 and without NDT weld inspection requirements?

Drilled shaft casing splice NDT weld inspection requirements are to match the weld inspection requirements for the steel pipe piles.

64 05/07/20 The note #6 on structural drawing S-002, under drilled shaft section mention a minimum rock socket length of 5 feet. However, on structural drawing S-501 & S- 502 a minimum 4’- 9” rock socket is required. Please clarify the required minimum rock socket at each drilled shaft location.

Minimum rock socket length on drilled shafts is 5'-0".

Dimension of 4'-9" shown on sheets S-501 & S-502 refers to the reinforcing length.

65 05/07/20 Per Note 1 on drawing SD301, and all other demo drawings, contractor shall remove pile in it entirety. If the contractor attempts and is unable to remove the pile the pile can be cut off 2 feet below mud line. Will the contractor be required to attempt to pull every pile prior to cutting off at mudline, or should the first 5 attempts be unsuccesful to extract the pile per pier the contractor can cut the remaining pile?

The contractor is required to attempt to pull every pile prior to cutting off at the mudline.

66 05/07/20 31 63 29 1.5.4 Please define what equipment is required for shaft inspection or if inspection equipment is the contractors choice to comply with the specifications.

Inspection requirements as indicated in the specification 31 63 29. Inspection equipment is the contractor's choice and must meet the intent of the inspection.

67 05/07/20 31 63 29 2.3.2.1 Confirm drilled shaft rebar is to be galvanized as stated in spec setion 2.3.2.1

Confirmed. Drilled shaft rebar is to be galvanized.

68 05/07/20 31 63 29 3.2.1 Spec calls for equipment to check dimensions and alignment of each shaft. Will shafts require some type of caliper profile or will casing diameter and bubble levels be allowed to verify the alignment due to the shaft being fully cased to rock?

Caliper profiling may be used, alternatively other methods that meet the specification may be proposed by the Contractor.

69 05/07/20 S-501 31 63 29 3.2.6 Specification section states that spacers should insure a minimum of 3 inch annular space between the outside or rebar and the casing. Drawing S-501 shows a spacing of 2'-6" min for vertical rebar inside a 36" OD casing and calls out a minimum of 1" annular space.

Based on the drawing there would be approximately 1.3" between the #4 tie and the inside diameter of the casing. Clarify what the minimum clearance is between rebar and casing.

Minimum clearance between the rebar ties and casing shall be 1".

Refer to the Drawing and

70 05/07/20 31 63 29 3.2.7 For completion of base cleanliness inspection, how many locations must be checked?

Industry practice for checking with a mini-SID is 5 locations but due to the 30" diameter of the rock sockets and the size of the inspcetion bell on the mini-SID the locations will be overlapping if 5 locations are required. Please clarify the number of required points to be inspected for shaft base cleanliness.

As stated in the specification section 3.2.7. - Prior to the placement of underwater concrete and prior to making final measurements of bottom of rock socket (by Contracting Officer), the Contractor shall use an approved drilled shaft inspection device as outlined in Contractor Submittal to provide a comprehensive underwater inspection of the prepared rock socket bearing surface at each shaft. The Contractor shall record drilled shaft inspection device observations on DVD or other reliable digital media. The date, shaft number, and camera position shall be recorded on the DVD. Copies of all data (written, electronic, DVDs, digital files, etc.)

The number of points is the number of points required to inspect the bottom of the shaft.

71 05/07/20 31 63 29 3.3 The specification requires all inspection reports related to shaft excvation, tolerances and cleanliness to be submitted and approved prior to placement of concrete. Confirm Contracting Officer will have personnel on site to accept copies of records and provide verbal acceptance and signature of records to allow continuous work on the shafts.

Confirmed.

72 05/07/20 Confirm both CSL and TIP testing are required on all drilled shafts? If so, will acceptance of shafts require no defects or anomalies to be shown on both

Yes both tests are required.

Acceptance of shafts after review and approval of both tests.

tests?

73 05/07/20 Drawing S-501, section C4 and B4 do not show the required layout of CSL pipes. Due to the different rebar diameters in the rock socket and casing sections please clarify at what location and radius the engineer requires the pipes to be located at.

Contractor to provide proposed layout of CSL pipes. CSL pipes to be evenly spaced.

74 05/07/20 Foundation Notes - Drilled Concrete Shafts: Note 15 calls for 8 total TIP wires per shaft.

Standard is for 1 wire per foot of shaft diameter.

Please confirm if 3 ea wires is satisfactory.

The number of CSL tubes could be reduced to four (4).

75 05/07/20 S-402 Please provide the material type/finish (ie, stainless or galvanized) for the epoxy anchor used to mount the O- Bore rubber fender to the concrete.

The epoxy anchor used to anchor o-bore fenders to concrete is to be ASTM A193 Grade B8M stainless steel.

76 05/07/20 S-515 Please provide the material type/finish (ie, stainless or galvanized) for the Mooring Horn Assembly and hardware (Detail D5).

The mooring horn assembly is to be fabricated from ASTM A53, GR B galvanized steel pipe for the horn itself. The steel friction collar is to be ASTM A572 GR 50 galvanized steel.

77 05/07/20 1 SF1442 Section 13 We respectfully request an extension of six (6) weeks from the current proposal due date of May 21, 2020 due to the extreme COVID-19 pademic restrictions imposed by various Government agencies. These restrictions are affecting our ability to prepare the proposal. In addition, many subcontractors, especially the small business firms, are unable to provide proposals by the current proposal due date.

See Amendment 0008

78 05/07/20 The State of Connecticut permit mentions a dewatering barge and utilizing a floating barge dewatering system which infers dewatering The sediment prior to placement. In order to place cap material utilizing The tremie pipe method, it will most likely require adding water to The sediment to create a slurry that can be pumped. Please clarify how The permit restriction will be handled should it be necessary for The dredging contractor to add water to pump The material.

Response to be provided in a future Amendment

79 05/07/20 A response to question 14 in amendment 5 relative to section

1.7.1 of the drilled shaft specification seems to indicate that the rock socket and concreting of the drilled shaft must be completed in one shift.

Typically the rock socket will be completed during a shift and the following shift the socket would be cleaned and inspected for cleanliness then cage and concrete placed. Note 6 of the Foundation Notes on drawing S-002 states that concrete shall be placed in rock sockets and casing a maximum of 48 hours after completing the rock socket. Please clarify the intent of the response. Is the entire socket to be excavated, cleaned, inspected, approved, and then the shaft concreted in one shift?

Concrete placement shall be within 48 hours of excavation completion. Immediately prior to reinforcing bar placement the bottom of the drilled shaft shall checked for sediment in accordance with 31 63 29 Paragraph 3.2.7. Refer to the Drawing and Specification Changes Table.

80 05/07/20 Will it be acceptable to increase the diameter of the drilled shaft casing to 39 inches (with 1/2" wall thickness) to allow a36" dia rock socket to be drilled. The detail for the rock sockets shows a 2'-6" dia.

socket with a separate cage that laps up into the larger dia. shaft above top of rock.

The smaller dia.

rock socket and separate cage present significant constructability issues. With a 36" dia rock socket the cage be a single diameter and continuous throughout the full depth of the shaft.

Increasing the drilled shaft casing diameter to 39 inches with a 1/2" wall thickness would be acceptable. Increasing the diameter of the rock socket to 36" would be acceptable.

Contractor shall make adjustments for the larger pipe as required, including the size of the HDPE jacket, anode design, bent cap size, rebar cage and provide revised details during construction for review and approval.

81 05/07/20 Marine concrete specification 03 31 30 Section 1.8.2 indicates a max slump of 8”. ACI

336.1 (which the project specifications reference) allow for up to a 9” slump. Please revise the project specification to allow for a higher slump.

A slump of 9" is allowable for the marine concrete in accordance with ACI 336.1.

82 05/07/20 Drawings SD 304 and SD 105 indicate existing battered piles that remain. Please confirm that they are not in conflict with the new shafts for the Crane Weight Test area. If they are please advise if they can be removed and/or temporary means to support the existing sheet pile wall (e.g. dead

If a conflict between an existing battered H-Pile and a new drilled shaft is encountered at the Crane Weight Test Area and/or the Pier 32 Utility Vault, the contractor will be allowed to shift the drilled shafts and bent location slightly to avoid the interference.

man) can be used? If so please provide details for this option.

83 05/07/20 Under Note 7 “Foundation Notes

– Drilled Concrete Shafts” please confirm “verification of bedrock properties” refers to bottom cleanliness as verified with a mini-sid device. If not please provide further clarification on “bedrock properties” to further inspect/verify.

Confirmed: “verification of bedrock properties” refers to bottom cleanliness as verified with a mini-sid device.

84 05/07/20 We do not see any welding requirements within specification 31 63 29 subsection

3.2.5. Can we

assume that the casing is “non-structural” and therefore casing field splicing can be performed using qualified welders per AWS D1.1 and without NDT weld inspection requirements?

Drilled shaft casing splice NDT weld inspection requirements are to match the weld inspection requirements for the steel pipe piles.

85 05/07/20 The note #6 on structural drawing S-002, under drilled shaft section mention a minimum rock socket length of 5 feet. However, on structural drawing S-501 & S- 502 a minimum 4’- 9” rock socket is required. Please clarify the required minimum rock socket at each drilled shaft location.

Minimum rock socket length on drilled shafts is 5'-0".

Dimension of 4'-9" shown on sheets S-501 & S-502 refers to the reinforcing length.

86 05/07/20 Per Note 1 on drawing SD301, and all other demo drawings, contractor shall remove pile in it entirety. If the contractor attempts and is unable to remove the pile the pile can be cut off 2 feet below mud line. Will the contractor be required to attempt to pull every pile prior to cutting off at mudline, or should the first 5 attempts be unsuccesful to extract the pile per pier the contractor can cut the remaining pile?

The contractor is required to attempt to pull every pile prior to cutting off at the mudline.

87 05/07/20 31 63 29 1.5.4 Please define what equipment is required for shaft inspection or if inspection equipment is the contractors choice to comply with the specifications.

Inspection requirements as indicated in the specification 31 63 29. Inspection equipment is the contractor's choice and must meet the intent of the inspection.

88 05/07/20 31 63 29 2.3.2.1 Confirm drilled shaft rebar is to be galvanized as stated in spec setion 2.3.2.1

Confirmed. Drilled shaft rebar is to be galvanized.

89 05/07/20 31 63 29 3.2.1 Spec calls for equipment to check dimensions and alignment of each shaft. Will shafts require some type of caliper profile or will casing diameter and bubble levels be allowed to verify the alignment due to the shaft being fully cased to rock?

Caliper profiling may be used, alternatively other methods that meet the specification may be proposed by the Contractor.

90 05/07/20 S-501 31 63 29 3.2.6 Specification section states that spacers should insure a minimum of 3 inch annular space between the outside or rebar and the casing. Drawing S-501 shows a spacing of 2'-6" min for vertical rebar inside a 36" OD casing and calls out a minimum of 1" annular space.

Based on the drawing there would be approximately 1.3" between the #4 tie and the inside diameter of the casing. Clarify what the minimum clearance is between rebar and casing.

Minimum clearance between the rebar ties and casing shall be 1".

91 05/07/20 31 63 29 3.2.7 For completion of base cleanliness inspection, how many locations must be checked?

Industry practice for checking with a mini-SID is 5 locations but due to the 30" diameter of the rock sockets and the size of the inspcetion bell on the mini-SID the locations will be overlapping if 5 locations are required. Please clarify the number of required points to be inspected for shaft base cleanliness.

As stated in the specification section 3.2.7. - Prior to the placement of underwater concrete and prior to making final measurements of bottom of rock socket (by Contracting Officer), the Contractor shall use an approved drilled shaft inspection device as outlined in Contractor Submittal to provide a comprehensive underwater inspection of the prepared rock socket bearing surface at each shaft. The Contractor shall record drilled shaft inspection device observations on DVD or other reliable digital media. The date, shaft number, and camera position shall be recorded on the DVD. Copies of all data (written, electronic, DVDs, digital files, etc.)

The number of points is the number of points required to inspect the bottom of the shaft.

92 05/07/20 31 63 29 3.3 The specification requires all inspection reports related to shaft excvation, tolerances and cleanliness to be submitted and approved prior to placement of concrete. Confirm Contracting Officer will have personnel on site to accept copies of records and provide verbal acceptance and signature of records to allow continuous work on the shafts.

Confirmed.

93 05/07/20 Confirm both CSL and TIP testing are required on all drilled shafts? If so, will acceptance of shafts require no defects or anomalies to be

Yes both tests are required.

Acceptance of shafts after review and approval of both tests.

shown on both tests?

94 05/07/20 Drawing S-501, section C4 and B4 do not show the required layout of CSL pipes. Due to the different rebar diameters in the rock socket and casing sections please clarify at what location and radius the engineer requires the pipes to be located at.

Contractor to provide proposed layout of CSL pipes. CSL pipes to be evenly spaced.

95 05/07/20 Foundation Notes - Drilled Concrete Shafts: Note 15 calls for 8 total TIP wires per shaft.

Standard is for 1 wire per foot of shaft diameter.

Please confirm if 3 ea wires is satisfactory.

The number of CSL tubes could be reduced to four (4).

96 05/07/20 S-402 Please provide the material type/finish (ie, stainless or galvanized) for the epoxy anchor used to mount the O- Bore rubber fender to the concrete.

The epoxy anchor used to anchor o-bore fenders to concrete is to be ASTM A193 Grade B8M stainless steel.

97 05/07/20 S-515 Please provide the material type/finish (ie, stainless or galvanized) for the Mooring Horn Assembly and hardware (Detail D5).

The mooring horn assembly is to be fabricated from ASTM A53, GR B galvanized steel pipe for the horn itself. The steel friction collar is to be ASTM A572 GR 50 galvanized steel.

98 05/08/20 SF1442 We respectfully request that the Small Business Plan and submissions, including Attachments E & G not be required to be submitted with the bid, but rather five to ten business days after the bid due date. It has been customary on many other federal, state and local projects and even on some other Navy projects that this information is not required with the bid.

No. Provide in accordance with Solicitation

99 05/07/20 Sheet C-107 Keynote

Calls out Connect to Existing. Do we know the type of piping and outside diameter of this piping is or is this to be field determined prior to ordering? Also, is this to be a “Full Body” Tapping Sleeve also similar to Note #20?

The piping material is not known. The water main to be connected to with a tapping sleeve and tapping valve shall be exposed and the material and size determined in the field, pior to ordering the tapping sleeve.

Tapping Sleeves shall be in accordance with spec section 33 11 00 Paragraph 2.2.2.4. All tapping sleeves shall be split-sleeve, which is a full encirclement sleeve.

100 05/07/20 Sheet C-107 Keynote

Calls out Connect to Existing 12” Water. Do we know the type of piping/ outside diameter of this piping or is this to be field determined prior to ordering?

Also, is this to be a “Full Body” Tapping Sleeve also similar to Note #20?

The piping material is not known. The water main to be connected to with a tapping sleeve and tapping valve shall be exposed and the material and size determined in the field, pior to ordering the tapping sleeve.

Tapping Sleeves shall be in accordance with spec section 33 11 00 Paragraph 2.2.2.4. All tapping sleeves shall be split-sleeve, which is a full encirclement sleeve.

101 05/07/20 Sheet C-107 Keynote

Calls out “Full Body Tapping Sleeve”. I am unable to find Tapping Sleeve requirements in the specifications.

Manufactures make many styles of “Full Body” Tapping Sleeves, can we get clarification?

Tapping Sleeves shall be in accordance with spec section 33 11 00 Paragraph 2.2.2.4.

102 05/07/20 Sheet C-107 Keynote

Calls out for a 12” bend to connect to the existing. Do we know the type of piping/ outside diameter of this piping or is this to be field determined prior to ordering?

The piping material is not known. The water main to be connected to shall be exposed and the material and size determined in the field, pior to ordering fittings.

103 05/07/20 General General Due to the complexity of this project, the detailed scope and performance specifications of the various systems, we are requesting a bid extension of four

(4) weeks from the current bid due date of May 21, 2020.

This will allow our estimating team and supply vendors valuable time to review all drawings, specifications and details to develop critical RFI questions including processing very important feedback from distributors and manufacturers that we feel will need to be clarified as we move on.

This will also enhance the Navy's ability to secure competitive pricing which is less likely if additinoal time is not made available.

See Amendment 0008

104 05/08/20 7 26 23 00 2.2.2.g We are being advised by suppliers that the specification for the Low-Voltage Switchgear for this project will lead to a sole source due to the requirement located in paragraph 2.2.2.g that requires Arc-resistant Type 2B.We are also told that this requirement has been waived on a project for NAVFAC in Bremerton, WA.

Can the requirement to meet Arc-resistant Type 2B be waived?

In Specification SECTION 26

23 00 LOW-VOLTAGE

SWITCHGEAR, sub-paragraph

2.2.2 Construction, delete the

requirement for Arc-resistant Type 2B. Refer to the Drawing and Specification Changes Table.

105 05/12/20 8 of 57 (1) Factor 1, Corporate Experience Given the scope and complexity of this project and the relatively few projects completed in the U.S> in the last 10 years please consider increasing the time constraint to the prevous 15 years.

No

106 05/12/20 1260 35 20 23 3.2.7.1 Can dredge CAD cell capping material be placed via bucket lowered underwater to the cell? If this is acceptable, what is the maximum free fall height allowed for placed dredge material?

No, capping material must be placed using a tremie pipe in accordance with the contract documents.

107 05/12/20 Specificati ons

We are unable to find specifications regarding the Cascon system to be installed as part of this project. If this is to be contractor furnished or installed, please provide specifications.

Provision of the CASCON system is not included in the Contract Documents, see DRAWINGs FA101 and FA501 with notations that indicate that the CASCON is by the Government.

108 05/13/20 Sheet S-509 Table of precast trench cover detail

N/A The table indicates the "Mark" for the various precat trench covers but does not provide any quantities.

There are also no designations on the trench covers on S- 112 through S-117 to indicate which covers they are.

Dimension of trench cover units perpendicular to trench longitudinal axis (dimension X in table) to match the trench width dimension plus 11" for bearing length. Three different trench widths are found on the pier: 4'-3", 3'-5" and 5'-0", which require trench cover dimensions of 5'-2", 4'-4" and 5'-11", respectively. Note that there is flexibility for contractor to determine suitable length of trench cover units parallel to the trench longitudinal axis based on ease of construction and production costs. Minimum length of units = 6'-0" and maximum length = 10'-0". At utility vault directly landside of the pier, trench cover designations shown on Sheet S- 411 and trench cover dimensions shown in table on Sheet S-509 are correct, except that the correct dimension X for Type I is 7'-11" versus 8'-2" shown. Refer to attached updated table for Detail B1/S- 509 listec below in this amendment. Contractor to submit trench cover shop drawings showing lengths during construction for review and approval by the Contracting Officer. Refer to the Drawing and Specification Changes Table.

109 05/11/20 E-103, E-604 Drawings There seems to be a discrepancy in the quantity of conduit ducts referencing drawing E-103 and E-604. On drawing E-103, the duct bank that runs from Manhole 206T to the utility vault and to manhole P32C-A shows 5-4” Conduits. Drawing E-604 shows that from Manhole 206T, 4-4” conduits run but notes 6 feeder options.

Drawing E-103 is missing feeder F04 from Manhole 206T to manhole P32C- A. Please advise on

PROVIDE 5-4" conduits from Manhole 206T to the Comm Vault and from the Comm Vault to Manhole P32C-A. On Drawing E-104, PROVIDE F04 from Manhole 206T to the Comm Vault and from the Comm Vault to Manhole P32C- A. Refer to the Drawing and the correct amount of conduit ducts.

110 05/11/20 S-509 Drawings Drawing S-509 provides a table of the various size utility trench covers designated by A through K, however the only place where we see this designation is for the Utility Vault covers on drawing S-401. We don't see them designated on the other drawings such as drawing S-112 through S-114.

Please provide the designation on each cover similar to how the Precast Planks are shown so we know how many of each type utility trench cover are required.

Dimension of trench cover units perpendicular to trench longitudinal axis (dimension X in table) to match the trench width dimension plus 11" for bearing length. Three different trench widths are found on the pier: 4'-3", 3'-5" and 5'-0", which require trench cover dimensions of 5'-2", 4'-4" and 5'-11", respectively. Note that there is flexibility for contractor to determine suitable length of trench cover units parallel to the trench longitudinal axis based on ease of construction and production costs. Minimum length of units = 6'-0" and maximum length = 10'-0". At utility vault directly landside of the pier, trench cover designations shown on Sheet S- 411 and trench cover dimensions shown in table on Sheet S-509 are correct, except that the correct dimension X for Type I is 7'-11" versus 8'-2" shown. Refer to attached updated table listed below in this amendment for Detail B1/S- 509 . Contractor to submit trench cover shop drawings showing lengths during construction for review and approval by the Contracting Officer. Refer to the Drawing and Specification Changes Table.

111 05/11/20 S-509 Drawings Referencing Drawing S-509 and Drawing S-112 through S-114, we do not see any details of how the W6x25 beams in the utility trench cover are to be arranged to allow for the 24" Manhole.

For trench covers with manholes in them, contractor to install two

(2) additional W6x25 beams perpendicular to the span direction on each side of the opening.

112 05/11/20 E-301 Drawings It appears, based on the electrical drawings, that there are a number of concrete duct banks that will need to be cast between caps and beams, but they are not detailed on the drawings. We understand that these will be independent of the Caps and Beams, but will pass through them.

Does the Owner intend to provide more details of exactly where these are to be located and how they will be orientated?

No. The Contract Drawings show sizes/quantities of conduits and approximate location. The exact loction of the concrete ductbanks, ductbank configuration/orientation will be determined by the contractor.

113 05/14/20 31 61 16.19

2.1.1.4 The section states

“Spiral and or straight seam and splice welds shall be complete joint penetration double fused beveled submerged arc welds in accordance with AWS D1.1 clause 9.” Will it be acceptable to field splice using flux core (FCAW) and/or stick (SMAW) welding methods in accordance with

AWSD1.1?

Field splicing welding methods are acceptable as long as they meet the requirements of AWS D1.1 clause 9.

114 05/14/20 31 61 16.19

2.1.2.1 Per specification

section 31 62 16.19 subpart 2.1.2.1 pile splices shall have non-destructive testing in accordance with

AWS D1.1/D1.1M

and shall be performed on 100 percent of all splice welds. Please clarify if NDT testing is just visual or if UT will also be required?

UT testing is required for 100 percent of splice welds on pipe piles.

115 05/14/20 S-509 A-A Please provide detail or specification for premolded expansion joint shown.

Use self-leveling polyurethane sealant designed for hroizontal expansion joints or approved equivalent. Contractor to submit product specification for review and approval by the Contracting Officer.

116 05/14/20 S-109 - S-111 Looking at the plan view there appears to be 10 1F planks.

The schedule on S- 508 says there are 12 Planks. Please clarify there are only 10

Confirmed. The correct number of Type 1F precast concrete planks is 10.

117 05/14/20 9 of 57 (1) Factor 1, Corporate Experience Will NAVFAC allow the use of a project that has reached substantial completion prior to issuance of the RFP to be included with Factor 1, Corporate Experience.

No

118 05/14/20 Drawing S-515

Mooring Horn detail D5/S-515 has a note indicating mooring horns are required in 4 locations. Plan drawings S-115 and S-116 show mooring horns in 14 locations. Please confirm quantity required.

The correct number of mooring horns required is 14, as shown on fender…