22R2598 0008.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

AMENDMENT TO SOLICITATION NO. N40085-22-R-2598 P-678 DRY DOCK 8 SALTWATER SYSTEM FOR CVN-78, NORFOLK NAVAL

SHIPYARD, PORTSMOUTH, VA

The purpose of this Amendment is to provide PPI responses and the corresponding attachments.

The current proposal due date is 15 June 2022 at 2:00 PM local time.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 14

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

16C. DATE SIGNED

BY 02-Jun-2022

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 N4008522R2598

X 9B. DATED (SEE ITEM 11)

29-Mar-2022

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 1 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

02-Jun-2022

CODE

NAVFACSYSCOM MID-ATLANTIC

CONTRACTING 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:

N4008522R2598

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE (SF 30)

The following have been added by full text:

AMENDMENT 0008

The purpose of this Amendment is to provide the following:

1. PPI responses.

2. 43 15 00.00 22

3. DRYDP678_HZMT-rpt_052021_Final

4. DRYDP678-1364315-12858014-2-MS522

5. DRYDP678-1364315-12858062-2-ES135

6. P678 Dry Dock 8 SW System Amend0008

REFERENCE QUESTION GOVERNMENT RESPONSE

Page Section Para.

26 13

26.00 25

3.7 Please referenced Specification

Section 26 13 26 .00 25 “Medium Voltage Switchgear” - Paragraph 3.7 “Special Testing for Seismic-Resisting Equipment.” This paragraph requires the manufacturer to have the equipment “Shake Table Tested” by a qualified testing agency and provide certifications. This test will eliminate most (if not all) manufacturers capable of complying with the rest of the project specifications. Can you please remove the “Shake Table Testing” from the project requirements so we can obtain electrical equipment pricing?

Intent is for all MC-1 equipment to obtain seismic certification in accordance with UFC 3-301-02 and ASCE 7-16 and not to limit the certification process to only shake table testing. All affected specifications will be updated.

Vol 3 Spec Page 22 of Spec Volume 3 has a chart identifying Electrical Designated Seismic Systems Requiring a Certificate of Compliance. This issue does not just hinder my Switchgear pricing. It’s stopping me from getting pricing on the Emergency Generator and Load Bank, the Switchgears, Safety Switches, Motor Starters, and Panelboards. Can you please include this in your question?

Intent is for all MC-1 equipment to obtain seismic certification in accordance with UFC 3-301-02 and ASCE 7-16 and not to limit the certification process to only shake table testing. All affected specifications will be updated.

2-S-416 SEC B2 Regarding the roof hatch shown on 2- S-416: We have noted that the hatch itself does not have a weather tight seal and the lift lugs are not long enough as shown to project through the roofing material. It appears that the intent is to install permanant roofing material continuously over the hatch and lift lugs, then if the hatch is ever required to be removed for access, roofing would be removed/replaced as required. Please confirm this understanding corrrect.

The understanding is correct in that the roofing material is permanently installed over the access roof hatch and will need to be removed/replaced for access in the future. Equipment replacement requiring hatch removal will be very seldom over the life of the structure.

4 31 23 00.00

1.5 b. Criteria for bidding section states, "Removal of unknown debris not identified on the project plans and greater than 0.5 cubic yard in volume from planned excavations will be paid for under the Unit Price Line Item on the Price Proposal Form." Price Proposal Form CLIN 0001AL and 0002AJ are for debris greater than 1.0 CY but less than 15 CY. Please clarify if we are missing a CLIN for greater than 0.5 CY but less than 1.0 CY or the referenced CLIN should read, greater than 0.5 CY but less than 15

CY.

Replace 31 23 00.00 20, 1.5.b as follows: Debris smaller than 1.0 cubic yards may be encountered within planned excavations. Small debris shall treated as Unsatisfactory Material.

Removal of unknown debris not identified on the project plans and greater than 1.0 cubic yard but less than 15 CY from planned excavations will be paid for under the Unit Price Line Item on the Price Proposal Form.

31 63 33 1.1

1-S-001 General Notes 5.G.2: Does the FOS = 3 apply only to the geotechnical capacity of the pile design?

Yes that is correct. The micropiles and connection into the pile cap must be designed for the loads listed.

31 63 33 1.1

1-S-501 Detail B4: Is 8 5/8” outside diameter casing required even if design calculations can support alternate sizes?

The micropile geotechnical axial capacity is based on 8-5/8" diameter and this is the basis for the project. If a different pile diameter is selected for use it will have to be load tested to ensure it can accommodate the project demands and there isn't much space in the pumpwell for such a test.

1-S-501 Detail B4 Note 5: Is the joint restriction required if calculations can support alternate structural solutions due to the lateral load?

Yes that is acceptable if calculations support alternate joint placement with respect to the design load.

13 31 63 33 2.2.2 Is grade 75 bar (ASTM A615) acceptable for reinforcing steel?

Yes, grade 75 bar is acceptable for use if alternatively desired as 2.2.2 specifies a minimum grade 60.

15 31 63 33 3.2.2 If reinforcing bar is coupled rather than spliced, can the restriction requiring casing joints to be 2 pile diameters from the bar splice be deleted? Casing lengths are likely to be short so this will be very difficult to achieve. Also, can the micropile

If the reinforcing bar is coupled, the location where the splice occurs can be modified easily depending on where the bar is cut. The casings may be short, but ample length will be available to stagger the bar splice and casing joint as per the specification. Maintain requirement.

designer determine if this restriction is necessary?

11 31 23

00.00 20

3.1.2 Specification section for 3.1.2

Drainage and Dewatering states, "If generated ground water does not meet Virginia Water Quality Standard, it must be collected for disposal and must be tested to determine if hazardous.....The Contractor is responsible for testing and properly disposing of the water in accordance with the sample results." It is our understanding that uncontaminated and contaminated water permitauthorized by the NNSY Environmental Department can be discharged to the storm drain. Specification Section 01 57 19.00 22 paragraph 3.4.1 also states, "Discharge of hazardous substance will not be permitted under any cirumstances." If the water is determined to be hazardous or omits a sheen as stated in the referenced section who is responsible for the costs related to the handling and disposal?

The quantity of potential hazardous water during dewatering operations is not quantifiable for our bid.

See Section 01 57 19.00 22 paragraph

3.4.1 and Section 31 23 00.00 20 paragraph 1.8.2 and 3.1.3 regarding discharge of groundwater from dewatering operations. Dewatering requirements of the dry dock are given within the PPI responses and amendments and contractor can estimate these quantities. Dewatering operations for construction activities shall be estimated based upon the Work included in the construction documents.

Please provide current allowable loading criteria for the designated work zones associated with this project.

See sheet 1-SB001

1-MP115 Section A1 This section appears to show flowable fill being placed into MDP-1 suction culvert just below the A3/1-MP303 section call out. Please clarify this is the intent.

MDP-1 Intake Culvert pit below grating in the dock is to be provided with topping slab. Slab is to be slopped towards 16" core drilled cross connection openings. The topping slab and the core drilled cross connection openings serve to route water in MDP-1 Intake Culvert to MDP-2 intake culvert, since MDP-1 suction culvert is filled/plugged for routing DP-4/5 discharge pipe.

Electrical No Specification was provided for Three-Phase, Liquid Filled Pad- Mounted Transformers. Can you please provide this specification section?

The project does not include stand alone three-phase liquid filled pad-mounted transformers. Project does include two primary unit substations with utility transformer as a part of the substation. Refer to Section 26 11

13.00 20 - PRIMARY UNIT

SUBSTATION, Paragraph 2.2.2 - Transformer Sections for equipment specifications, Solicitation Due to the level of complexity and coordination needed for this project, we respectfully request a 4 week bid extension from May 10, 2022 to June 7, 2022. This will allow the contractor to put together the most competative proposal for this project.

Please see Amendment 0007.

2-M-601 35 20 14 3.3 Reference Spec 35 20 14 and drawing nos. 2-M-601, 2-M-602 and 2-MS-115 regarding the stop logs. Per cited drawings, stop logs schedules state that leakage rate is 0.1 GPM/FT. Spec 35 20 14 - 3.3 is silent as to field leakage test for stop logs. Please confirm that stop log leakage tests are to be performed by manufacturer prior to shipment to the jobsite. Please confirm that leakage tests for installed stop logs is not required.

Stop log leakage tests are to be performed by manufacturer prior to shipment to jobsite. Field acceptance trials of stop log are to include installation and removal of stop log from guides and a minimum of one complete drain down of downstream water for a visual verification of stop log seating and leakage.

4 01 35

40.00 22

1.5 Can the Marine Mammal Protection

Manager also fulfill one of the Marine Mammal Observer roles?

The marine mammal protection manager has an oversight function for marine mammal protection for the project, and this function should be independent of the observer function.

However, if the Marine Mammal Protection Manager has no other roles/duties than marine mammal protection manager and can maintain continuous visual attention to the harassment zones to record and collect data, then he/she can also function as on of the observers.

1-SD100 -

1-SD102

Please clarify whether selective demolition and restoration of the concrete slabs at elevations 101ft and 83ft will be permitted in order to facilitate the removal of MDP 1 and construction of DP4 and 5 in Pumpwell 8.

No additional demo is necessary for removal of MDP-1. The pump body unbolts into manageable sections that can be removed through the existing floor opening and roof hatch. As for DP-4/DP-5, the pumps are small enough to facilitate installation through the existing openings.

6 03 31 30 1.3 h. The definition for Marine Concrete states "In addition, structures may need to be designed using these criteria even though they are not adjacent to the waterfront. For example, structures located several hundred yards from the waterfront often deteriorate prematurely due to salt spray and salt fog brought to the structure by prevailing winds. An assessment of existing structures near the construction site can be an excellent indicator for the Engineer of Record and Owner to decide if the proposed structure should follow the guidelines for marine concrete."

Please clarify which structures are to be considered marine concrete.

See Subpart 1.1 of Section 03 31 30 "This section applies to CIP concrete, tidal and submerged exposures, including but not limited to" . The structures at NNSY are built along a river and not subject to significant salt spray. The structures that require marine concrete are indicated in Subpart 1.1.

2-CU200,

2-CU222

The Phase 2 Civil Alignment Plan calls out the Utility Corridor D as A1/2-CU222. There is no detail A1 shown on sheet 2-CU222. Please provide correct reference.

Use reference A1/CU224

Is the contractor responsible for the filling of the fuel tanks for the Generators?

Government to furnish fuel. Refer to Specification 33 08 55 §2.1.1

1-CU203

Detail A1

Please provide location of referenced Existing Electrical Manhole "EX-

EMH-S3"

Refer to drawing 1-CU200 for location of Existing Electrical Manhole "EX- EMH-S3" at EP: 11+15.53 (A1/1- CU203). EMH-S3 is also labeled on drawings 1-VF112, 1-CD112 and 1-

CS112.

Due to the significant fluctuations in material costs and extended period of contract performance we respectfully request the Government add the Economic Price Adjustment clause to the solicitation.

There is no economic price adjustment clause included in the solicitation. Bid per RFP.

1-CU203

Detail C3

The referenced detail indicates that the ductbank is from "EMH-04 to Pumpwell 8 Switchgear" However the profile shows the ductbank to be from EMH-1-07 to Pumpwell 8 Switchgear.

Please clarify which is correct.

Revise label of C3/1-CU203 to

"ELECTRIC DUCTBANK EMH-1-07

TO PUMP WELL 8 SWITCHGEAR"

1-CU208

Detail A1

Note on referenced profile indicates to connect to existing manhole; however electrical drawing ES129 appears to indicate that this is a new manhole.

Please clarify which is correct.

Remove "CONNECT TO EXISTING MH" from TMH-1-12.

Price Proposal

Form

Please clarify whether the electrical substations and associated foundations are to be included under CLIN 0001AA or 0001AB.

Electrical substations and associated foundations are to be included under

CLIN 0001AB.

2-M-010 Note 16 Please clarify pipe material and pipe lining for both SW and SAN lines for the Pipe Gallery and Utility Tunnel.

Note 16 on DWG 2-M-010 calls out existing lines to be Cement Lined Ductile Iron, but there is nothing indicating what material and lining the new pipe shall be. Mechanical Pipe Schedule on 2-MS601 only indicates Clean Water Header and Saltwater Return lines.

Per General Note 13 on sheet 2-M-010, the piping and components for the saltwater and sanitary systems that are either within the dock, within the utility tunnel, or going up to the coping level risers are specified within the noted specification sections. Refer to specifications for requested information.

33 11

00.01 22

Please confirm the full scope intent of Section 33 11 00.01 22 – 2.1.1.1 c.7 – Connecting and Restraining Hardware and what this requirement relates to for piping systems to be provided. The way this specification is interpreted is that all Tie Rods, Bolts, Nuts, Washers and Screws used for Joining Material need to be 316 SSTL for all Exposed Flanged Piping Systems SWR, SWS, CWHR, SW, and Sanitary for the project. Please confirm this is correct.

For SWR, SWS, CWHR, SW, and SAN piping within the utility tunnel, dock and at coping level risers will be provided with Type 316 SS connecting or restraining hardware. For the sanitary piping within the utility tunnel, see Amendment to add Type 316 SS connecting hardware to Section 33 00

00. For SWS and SW piping within the Pump Stations and Pumpwell, connecting or restraining hardware may be as specificized in Appendix of AWWA C110 and C115.

Additionally, Per the same specification noted above, it is indicated to Provide insulating bolt sleeves and insulating washers between the restraining hardware and flanges. Does this note imply that all flanged joints of the systems noted above need to have insulating joints regardless of material make up or does this just relate to joining areas of different material makeup. Please confirm the full intent of this specification note also.

The saltwater piping within the utility tunnel, dock and at the coping level will have flange materials that are different than the connecting or restraining hardware, and because of that all dissimilar materials need to be isolated.

The insulating bolt sleeves and washers shall be provided for all flanges on the saltwater system. For the sanitary piping within the utility tunnel, see Amendment to add isolating requirements between hardware and flanges to Section 33 00 00.

2-MS601,

621, 622

For all SWR, SW, and Sanitary Pipe Supports as listed in the Mechanical Schedules on 2-MS601, 621, and 622, it is not clear on what material makeup these support systems including anchoring hardware should be provided as when coordinating with the Structural Drawings, also. Can clarity be provided to what type of material make up the provided supports need to be provided as when referencing the details provided in the Mechanical Schedules.

Support systems will be galvanized steel materials unless specifically indicated otherwise. Schedules on 2- MS621 and 2-MS622 refers to 2- MS522 for support attachment requirements. See Amendment for revised 2-MS522 for the additional information on support and attachment material requirements.

33 11

00.01 22

1. Per Specification 33 11 00.01 22 –

2.1.1.3.4 – HDPE Flanged Fittings – It is indicated that the Molded Stub Ends with Backup Rings shall be provided, where Flanged HDPE will connect to other Flanged Fittings or Valves, is it acceptable to provide DI Backup Rings when connecting Flanged HDPE to other Flanged Systems and do these systems need 316SSTL Bolts and Isolation Kits when providing this type of Backup Ring. Please provide clarity on all questions asked.

Fusion bonded epoxy coated DI backup rings are acceptable for connecting flanged HDPE to other flanged systems.

Provide 316SSTL bolts and isolation kits were systems are exposed and as indicated in PPI #162.

2-MS501 1. Per Mechanical Detail Sheet 2- MS501, Section A3, when coordinating with the appropriate structural detail related to this support there is no call out of what type of beams are to be provided to attach the Flange Pipe Anchor too. Please indicate what size beams are to be provided here that sit upon the structural support attached to the wall locations as shown on 2-SS501 Section D1.

Horizontal beam member is a delegated design. Size and geometry are to be as required for final pipe supports.

Drawing 1-

ES705

Who is the manufacturer of the (4) existing MV switches DD8-G/S-1S, 1N, 2S AND 2N?

The existing gas insulated switches are TNI-series by G&W Electric.

Drawing 1-

ES705

Do the existing switches have SCADA capabilities?

The project does not include SCADA work on existing gas insulated switches.

Draing 1-

ES705

Are we providing closed / open loop to communicate amongst these switches?

Only two new switches (DD8-G/S-3N and DD8-G/S-3S) are to be connected to SCADA. The switches are to communicate upstream using open loop.

2-A-601 finish index

Please identify the product desired for CS-1 Concrete sealed. The index states "RE:Struct" but we have not been able to locate any information on the sealer.

The pump level floor will receive a broom finish and electrical mezzanine a steel troweled finish. A penetrating sealer will be required for both surfaces.

2-A-601 will be modified to reflect the following: Replace "RE:STRUCT." in FINISH INDEX under row "CS-1" with "PENETRATING SEALER" and add "SEE NOTE" to the "COLOR/REMARKS" column. Add note under FINISH INDEX to state the following: "NOTE: PROVIDE

BROOMED FINISH FOR PUMP

LEVEL FLOOR AND A STEEL

TROWELED FINISH AT THE

ELECTRICAL EQUIPMENT FLOOR.

APPLY COLORLESS

PENETRATING SEALER AFTER

CONCRETE HAS CURED FOR A

MINIMUM OF 28 DAYS."

2-ES135,

2-CU201

Drawing 2-ES135 Keynote 4 indicates that we are to pull new conductors in existing ductbank. Drawing 2-CU201 appears to indicate that this is a new ductbank and is a continuation of a ductbank capped off in Phase 1. Please clarify which is correct.

Revise Sheet 2-ES135. Replace manhole tag EMH-1-06 with EMH-2-

06. Delete Note 4 on plan and in sheet keynotes. Delete the word "EXISTING "at duct bank callouts on both sides of EMH-2-06 and replace "06 in circle" with "06".

1-A-102 fininsh schedule & Index

Please identify any finishes required on the interior or exterior of pump well #8. Are the existing surfaces being prepared and new coatings being applied? If yes, please provide a finish schedule that indicates what is to be utilized on each surface or item.

The scope for finishes only refers to newly constructed spaces such as the control room as indicated in the finish schedule. Other finishes not included in schedule fall under patch and repair -wherein paint/finishes should match existing during patch/repair work.

2-M-601;2- M-602

40 05 13 2.11.4 Please advise as to the basis of design (manufacturer and model number) for the bladder surge tanks listed in Surge Tank Schedule on sheet nos. 2-M-601 and 2-M-602.

Basis of Design is Wessel EP-SSA

2-M-601;2- M-602

40 05 13 2.11.2 Please advise as to the basis of design (manufacturer and model number) for the strainers listed in Strainer Schedule on sheet nos. 2-M-601 and 2-M-602.

Basis of Design is Tate Andale KBF

M-201 Appendix Vol 1 of 2

Pumpwell 8 - Replace

MDP2

General Sheet Note 4 references a U- Bolt lifting ring mounted into the ceiling above the center of the motor room floor which the contractor is responsible to inspect, test, and certify prior to use. Please confirm whether this u-bolt is still in place for use on this project.

Pumpwell 8 - Replace MDP-2 project drawings provided for information only.

Project has not been completed and lifting ring are still be in place, available to be used.

1-MP-104 Key Note No. 130 on drawing indicates a "Flow Switch" to be installed in existing Flushing Water Line. Please identify size, type, and material required for the Flow Switch.

As-built drawings indicated flushing water line as 1"; field verify pipe size per sheet 1-M-001 General Mechanical Notes # 5. Flow switch to be paddle type, brass body, 316ss paddle, EPDM seal, equal to OMEGA FSW-160.

Refer to specification 40 60 00 § 2.4.3.1.

2-CU107

thru

CU115 and

2-MS523

The drawings for the 36" SW indicates tie rod restraints at flow direction changes. Drawing 2-MS523 shows details up to 16" for Tie-Rod installation. Is there a detail for the 36"?

Per specification 33 11 00.01 22, buried saltwater supply pipe is internally restrained with push-on joints and does not required tie rod restraints. Above grade 36" SW piping uses flange connections and does not require tie rod restraints.

The drawings indicate that the Medium Voltage Equipment require a 65KAIC Short Circuit Rating. The gear manufactures are questioning this rating as 65KAIC is usually associated with Low Voltage. Please verify that this is the correct rating.

Below are the intended KAIC ratings for 4160V switchgear and motor control centers:

- PW8-SWGR: 50KAIC

- PW8-MCC-MDP: 50KAIC

- PW8-MCC-DP: 50KAIC

- PS6-SWGR: 50KAIC

- PS6-MCC: 50KAIC

- PS8-SWGR: 50KAIC

- PS8-MCC: 50KAIC

2-GI150 &

2-GI160

10 44 16 2.1.3 Plan sheets 2-GI150 & 2-GI160 indicate that the Fire Extinguishers are 5 Pounds. Spec section 10 44 16 2.1.3 states that the Fire Extinguishers are 15 Pounds. Please clarify.

Specifications are correct. Drawings will be revised to read 15 pound extinguishers.

2-A-350 07 92 00 2.5 Sheet Keynote 37 on plan sheet 2-A- 350 indicates a Compressible Filler in Details B2 & C2. Spec section 07 92 00 2.5 provides the details for the Flexible Joint Compressible Filler, which is believed to be the material indicated in Details B2 & C2. Please provide a basis of design for this material. It is unclear if this is backer rod, sill seal or something different.

This refers to material used for the purpose of achieving weathertightness and part of the continuous air barrier system on adjoining exterior walls and roof. This is any recommended compressible filler material to achieve performance as indicated by drawing & specifications.

31 26 16.13

2.2 2.2.1 Please clarify what if any pile tip or shoe is required for the pipe pile on the project.

Bid per RFP (Shoes are not required).

1-CU501 Plan sheet 1-CU501 details A3 and A4 show typical utility pipe trench details.

Is it the intent to use these details for all underground Utilities?

Yes, that is the intent.

Price Proposal

Form

CLIN 0007 has a unit of Lump Sum and a number of units of 2. Should the unit of measure be Each?

This has been corrected to "each" in the Price Proposal Form.

Price Proposal

Form

Section 1.2 General Notes b. states CLIN 0006 is in Phase 1. The description above states CLIN 0006 is in Phase 2. Please clarify.

CLIN 0006 is in Phase 1 and is correct in the most recent version of the Price Proposal Form.

Price Proposal

Form

Section 1.2 General Notes b. states CLIN 0005 is in Phase 2. The description above states CLIN 0005 is in Phase 1. Please clarify.

CLIN 0005 is in Phase 2 and is correct in the most recent version of the Price Proposal Form.

1-SD100 -

1-SD104,

1-SD201,

1-SD202,

1-S-104

1-S-104, A1

During the site visit, it was communicated that the work to demolish MDP1 and construct DP- 4/DP-5 chamber pit foundation would take place inside of the wall faces making up the MDP1 chamber.

Projecting the micropile locations shown on sheet 1-S-104, section A1 up through the pumpwell to Elevation 103ft appears to show the East-most line of micro-pile under the East wall of the MDP1 Chamber. The vertical clearance between the floor elevation and the bottom of the wall separating the MDP1 chamber from the MDP2 chamber creates a significant impact to the constructability of the micro pile at this location and may prohibit their installation altogether. Provided the design demonstrates meeting Contract requirements, can the micropiles at the bottom of Pumpwell 8 be moved to mitigate accessibility and constructability issues with their specific shown location?

The vertical clearance from the bottom of the DP-4/DP-5 pit to the underside of the concrete pumpwell wall in question is approximately 30' for installation of the east side micropiles if the rig is placed at the base of excavation.

Typical minimum clearance for low headroom applications is generally 9' for installation up to 8-5/8" diameter micropiles.

1364315_d wg_05of18

_PH1_V1_

Structural

1-S-001 General Note Section 5.G for the Steel Micropiling indicates a factor of safety

3.0 for the minimum design capacities.

Is the FOS 3 carried into the provided design capactities or do they need to be added to the provided design loads?

The design capacities with respect to estimated depth are based on a FS = 3.0 per the geotechnical engineer of record.

Design loads listed are at service level that need to be resisted by the pile and cap connection.

1364315_d wg_13of18

_PH2_V3_

Structural

2-SS504 Section C1 Shows the contractor to dowel into existing concrete with epoxy and rebar dowel. What is the interval of the spacing?

Drawing reference in PPI is not consistent with question. Section C1/2- SS505 shows a #6 dowel embedded 12" into the existing discharge flume and a note stating that the dowel must match the wall reinf which is #6 @ 9"OC.

1364315_d wg_13of18

_PH2_V3_

Structural

2-SS504 Section C1 Shows the contractor to precast the lid. What is the MAX gap between the lid and the CIP wall?

Drawing reference in PPI is not consistent with question. Section B1/2- SS505 shows a 1/2" neoprene gasket around perimeter of the lid which requires a 1/2" gap between the concrete lid and wall.

1364315_d wg_07of18

_PH1_V2_

Architectur al

1-A-600 Phase 1 Opening 101 – Door Schedule Calls For Door To Be Sound Rated at STC-49. Hollow Metal Door and Frame Spec 081113, Page #3, Section

2.2 “Insulated Steel Door Systems” Calls For This Door To Be Steel Stiffened and Thermally Insulated. If you need an STC-49 Rated Opening, that door and frame will come from a custom supplier with the rating and also furnished with sound seals as well. The question is, which takes precedence – the STC-49 or the thermal insulated spec, as you cannot have both – Please Advise

STC rating takes precedence

Section 08 71 00

Specificati on Section

Spec Section 087100 Door Hardware – Hardware Set #1 – Set Calls For Exit Device and Storage Lockset. Is the intent to provide a storeroom function panic device and trim? Please advise

Intent is to be a storeroom function to be lockable from outside with panic device inside for person to be able to exit during emergency.

26 13

26.00 25

Paragraph 3.7

Will the electrical equipment be considered MC-1 mission critical? The specifications requires specific testing for this type of equipment and the manufacturer's are trying to develop pricing based on the equipment classification for the project.

Intent is for specification 26 05 48.00

10 'SEISMIC PROTECTION FOR

ELECTRICAL EQUIPMENT' section

1.2.2 'Electrical Equipment' to list all MC-1 rated equipment in the table.

Specification will be updated to indicate intent of the provided table.

01 14 00 Can NAVFAC be clear with the work restrictions concerning the anticipated Aircraft Carrier Docking. The only note in work restrictions list setting up temporary offices. Assuming a May 2024 Docking and a 554 Phase 1 Duration, that would indicate a Contract Award in October of 2022. A 1698 CD duration would indicate a completion of June 2027 and a start of Phase 2 using the 692 CD of July of 2025. Is the Aircraft Carrier intended to be docked from May 2024 to July of 2025? Is the Contractor expected to demobilize from the site? Can any work occur during this time frame?

Please clarify

An Amendment will be issued for Section 01 14 00.00 22 and include additional special scheduling requirements. During an aircraft carrier docking, the contractor will be required to demobilize. No onsite work can occur during this time.

2-EL 501 Luminair requirement note #1 calls for the housing to be stainless steel extruded housing and milled endcaps.

Can you please identify what fixture is the basis of design. Lighting manufacturer wall packs are normally extruded alumium, not stainless steel and we are having difficulty finding someone who can provide a fixture based on this requirement.

Stainless steel extruded housing requirement to be removed from type C1 and C2 lighting fixtures and updated to provide fixtures housings designed for a corrosive environment.

2-SB501 Detail B3 Detail B3 on Sheet 2-SB501 shows the trench drain in the pump station floors.

Please provide material requirements for this trench drain.

Floor trenches are to be HDPE channel with ductile iron grate. Refer to specification 22 00 00 §2.5.1 for additional requirements

22 15

14.00 40

Specification addresses Above Ground Compressed Air installation. Drawing 2-CU110 requires below ground installation. Please advise.

Below grade compressed air piping 2 inches and smaller must be ASTM A106/A106M, seamless steel, schedule

80. Below grade compressed air piping 2-1/2 inches and larger must be ASTM A53/A53M, seamless or ERW carbon steel, schedule 40. All below grade piping to include a factory applied coat of continuously extruded polyethylene coating over an adhesive under coat.

Coasting shall conform to FS L-C-350 with 36 mil minimum thickness. Refer to Amendment Specification 43 15

00.00 22 for additional requirements.

33 31 00 2.1.1 and 2.6

Oily Water specification indicates A53 carbon steel pipe for this system. The coatings section, paragraph 2.6 addresses Ductile Iron Pipe. Please advise.

Provide Ductile Iron pipe material and fittings for the Oily Waste / Waste Oil.

1-CS501 Will the new 10 inches of gravel as shown in detail A3 on sheet CS501 in the area of Pavement removal and replacement be paid for under CLIN 003AL price for the provision of select fill?

No. Aggregate subbase material for all asphalt pavement sections must be included in the base bid. CLIN 0003AL is solely to be used for additional fill material required during construction activities for the remediation of unsatisfactory, contaminated and/or hazardous soil materials. SECTION 31 23 00.00 20 will be updated to provide material requirements of Backfill and Fill material.

1-CU501 Will Utility Bedding Material as shown on sheet 1-CU501 detail A3 & A4 be paid for under CLIN 003AL price for the provision of select fill?

No. Utility bedding material for all pipe trench sections must be included in the base bid. CLIN 0003AL is solely to be used for additional fill material required during construction activities for the remediation of unsatisfactory, contaminated and/or hazardous soil materials.

1-S-102. 1- S-103, 1-S-

Drawing 1-S-102 indicates two 2'-10" dia floor plate covers per keynote 24, referring to A1/1-S-421. Drawing 1-S- 103 calls out for 2 more per keynote 37, but plan shows rectangular shapes.

Are the floor plates indicated by keynote 37 to be per A1/1-S-421?

The detail A1/1-S-421 applies to circular and rectangular cover plates per the detail as explicitly noted.

17 03 31 30 1.8.4 Are SCC and flowable fill placements in the following areas subject to the mass concrete requirements?

100+/- psi flowable fill is not described in Section 03 31 30, see amendment with respect to SCC.

Intake Abandonment 2-SD406 Flowable fill and SCC are not subject to mass concrete requirements

Intake Abandonment 2-SD407 Flowable fill and SCC are not subject to mass concrete requirements

South Flooding Flume 1-SB401 & 1-

MP115

Flowable fill and SCC are not subject to mass concrete requirements

North Flooding Flume 2-SB403; 2-

MS109; 2-MS110

Flowable fill and SCC are not subject to mass concrete requirements

2-MS-108 Sheet Note

Specification 33 31 00 paragraph 1.3.2 Indicates Clean Water Header to be Stainless Steel. The Referenced drawing sheet note indicates the Clean Water Header to be HDPE. Please advise.

Clean Water Header to be HDPE pipe as noted on drawings. Refer to specification 33 11 00.01 22 for HDPE pipe requirements.

n/a 07 14 00 3.3.1 Spec section 07 14 00 item 3.3.1 states "Do not permanently install protection board until the membrane has passed the flood test specified under paragraph entitled "Flood Test.".

Please provide the Flood Test paragraph.

Flood test paragraph is intended to be determined and performed by the manufacturer's recommended flood test for quality assurance.

1-S-103 Keynote 51 on Drawing 1-S-103 indicates to repaint existing columns in bilge area with a 3-coat paint system.

See below responses:

1. What size columns are these? The columns have an approximate size comparable to a W8x31.

2. Please confirm the extent of repainting is from El 28-3 to El 68.

The existing columns extend from EL 28'-3" to EL 46'-0" for repainting.

3. Is existing coating intended to be fully removed prior to repainting?

Refer to specification 09 90 00.00 22 Section 3.4.1a/b.

4. Is power tool prep (SP-3) acceptable or is blast prep (SP-6) required?

If the surface has more than 20% rust, it must be blast cleaned per the specification otherwise tool cleaning is acceptable.

Spec Appendicie s Vol 1, pp

429 and

Spec 02 83

00.00 22

Should it be assumed existing coatings on all PW8 interior steel contains lead levels that require abatement IAW Spec 02 83 00.00 22? (Spec Appendicies provide a map of some testing, but no accompanying reports).

The HAZMAT report will be issued with the next Amendment.

(End of Summary of Changes)