N6247024R0062 0005.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

See Block 14 continuation page.

1. CONTRACT ID CODE PAGE OF PAGES

140 1 58

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

16C. DATE SIGNED

BY 15-May-2025

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 N6247024R0062

X 9B. DATED (SEE ITEM 11)

04-Mar-2025

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

15-May-2025

CODE

COMNAVFACSYSCOM ATLANTIC

6506 HAMPTON BLVD

NORFOLK VA 23508-1278

N62470 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N6247024R0062

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 0005

The purpose of this amendment is to:

1. Respond to PPIs.

2. Revise Specifications.

3. Revise Drawings.

4. Provide attachment.

1. PPI Responses.

Please provide a layout of the drydock work area with the floating barrier typical locations and dimensions of allowable space between barrier and proposed entrance cofferdam

For Contractor barges not fully confined by the floating barrier system in the closed position, the barrier segments may be disconnected and secured to the barge(s) in a manner that allows the barge(s) to act as blocking barges and form an extension of the barrier system.

01 11 00 01 32

17.00 20

1.10f 1.10.1.

01 11 00 1.10f. This paragraph states "In addition to other provisions, the construction schedule shall account for non-working construction periods during which the Contractor has no access to the site for a sum total of 47 working days.".

Please confirm that the government is requiring that more than 2 months of the allotted contract duration to be considered downtime for the contractor. How much time notification will be provided to the contractor prior to these contract required downtime delays? Please provide an approximate time span associated with each "No Access" evolution (e.g. 1 day, 1 week, 1 month, etc.).

How should the contractor

The government is requiring that a total of 47 working days be considered non-working due to site inaccessibility. These days account for anticipated work stoppages resulting from shipyard activities, including but not limited to nuclear drills, safety drills, security alerts, emergency shipyard closures, and similar events. While the estimate is based on an average of approximately one event per month, the frequency of these events may vary. The contractor should assume there will be no notification for any of these events. Although some planned events may have advance notice of up to one week, many emergent or unplanned events will not have any advance notice.

incorporate the unplanned 47 non-working days into the construction schedule? Please confirm that these 47 days are only for the original duration of the contract?

In addition, the actual direct downtime costs incurred can only be fairly estimated and recovered based on the actual resources (labor and equipment) incurred at the time of the delay that the contractor in unable to mitigate.

The schedule days and the associated field overhead costs can be included in the schedule but not the actual direct costs of the delay. Will this be addressed by the changes clause on a case by case basis?

The construction schedule must integrate these potential work stoppages into the critical path activities, distributing them throughout the original contract duration. These events should not be represented as a single, continuous 47-day task. Instead, they should be treated as periodic, government-imposed stoppages, incorporated into the critical path analysis as days of no site access.

Ideally, this would be done through specific calendar exceptions or constraints in the project. If the project duration is four years, approximately one day per month will be assigned in the project calendar as non-working days. The contractor is responsible for incorporating the potential impact of these stoppages into their schedule and pricing.

The contractor's proposal must account for all direct and indirect costs associated with these work stoppages, including potential impacts on labor, equipment, materials, and schedule. The contractor's initial proposal and baseline schedule must account for these 47 non-working days and the contractor acknowledges that these work stoppages are inherent to the shipyard environment and are not considered changes to the contract. Therefore, no additional compensation will be provided for these events, and they will not be eligible for consideration under the Changes clause of the contract.

As used herein, stoppage/work stoppage is defined as any planned or unplanned event that results in a temporary cessation of work, either in its entirety or impacting specific tasks or areas of the project.

Solicitatio n

Document

(SF 1442)

Please confirm that construction materials required for this contract, "that consist wholly or predominately of iron and steel or a combination of both" can be manufactured by "World Trade Organization" countries that have a Government Procurement Agreement (WTO GPA) and countries that have a Free Trade Agreement (FTA) with the United States at the time of bid.

Propose in accordance with the solicitation.

03 31 30 2.1.1

In order for the concrete supplier to produce a 50% FA/50% cement mix, the minimum cement content (pcf) listed in the chart must be ignored.

See amendment detail below.

03 31 30 1.8.5

Since the mass concrete thermal control plan is a delegated design, since there is not a design for a thermal controls, it is unknown what the requirements are until the thermal modeling is performed. If the contractor is not using a 50%/50% mix (when mass concrete thermal control is not applicable), what should the contractor's basis of bid include for this work?

Propose in accordance with the solicitation.

C-002

Demolitio n Notes 9

"Pipes indicated to be abandoned in place must be plugged at both ends. Pipes larger than 4-inches diameter indicated to be abandoned must be filled with controlled low-strength material (CLSM)." Please confirm that this note only applies to abandoned pipes that are identified to be capped with a permanent pipe plug per detail D4 on page

CD501.

Only pipes, 6" and larger with permanent plugs must be filled with CLSM.

02 21

14.00 22 FIG-1

Please confirm that the archaeological monitoring is only required for excavation of soil and not demolition of asphalt, concrete, or installation of deep water wells.

Archaeological monitoring will be required for demolition of asphalt/concrete/deep water wells in the areas demarcated in green.

Demolition of asphalt/concrete/deep water wells in the areas demarcated in yellow will not require archaeological monitoring.

S-552

B4 Scale for drawing is incorrect.

Please provide correct scale.

See amendment detail below.

As stated at the site visit, please confirm that all materials, storage, temporary structures, propeller enclosure etc. will be removed from the jobsite by others prior to contractor mobilization. Also, please confirm that the utility bridges that cross the dry dock will be removed, stored, and reinstalled by others.

Materials, storage, temporary structures, propeller enclosure etc.

not in the plan set will be removed from the jobsite by others prior to contractor mobilization. The Utility Bridge will need to be demolished as part of this project.

S-204, S-

Elevations show that North and South wall stairs closest to the head of the drydock (Type 1) must have removable landings and flights. Type 2 stairs closest to the entrance are to have removable flights and landings as a Bid Option. Will the ability to remove the stairs and flighting be what is being priced in the option? How is this different from the removable Type 1 stairs? Is the base bid to make Type 2 permament? Please clarify.

See amendment detail below.

Stairs have been removed from the Bid Option. Include all stairs in Base Bid, as detailed in the Contract Documents.

S-527, S-

Both Type 1 and Type 2 seem to have, by design, the ability to be removed. Can the contractor construct Type 2 stairs as having removable flights and landings as a default for the base bid? If not, please provide information on the difference between the Type 2 stairs main bid and option.

See amendment detail below.

Stairs have been removed from the Bid Option. Include all stairs in Base Bid, as detailed in the Contract Documents.

ET-111,

ET-201

TELE-1 profile shows a penetration through the existing crane beams between TMH-2038 & TMH-2039, but there is no detail. Is this an existing hole in the crane beam? If not, please provide a size and deatil for the core drill.

Yes, there are existing openings in the crane beams. Adjust routing as needed to pass through existing opening.

EP402

Note 2

Provide dimensions and weights of government furnished pad mount transformers

The Government furnished generator weights approximately 55,000 lbs. Each transformer weighs less.

S-005

Detail D3

Detail D3 on S-005 provides spacing for coping CJs and PCJs.

Please confirm whether the coping CJ and PCJs shown in detail D3 also apply to the CIP Walls behind the precast panels, and in addition to the Utility trench Slab and Walls. Does the design require CJs and PCJs to be

PCJs in the CIP Wall are indicated on A2/S-515 and line up with the p/c wall panel joints.

The utility trenches and floor trench drains (walls and floor) follow the jointing plan indicated on D3/S-005. All of the joints in the DD floor, walls, and trenches are intended to be aligned and carried through the entire DD Wall system? For example, if there is a PCJ and CJ in Carried into Utility Trench, and CIP Walls?

build off 12.5', 25', or 50' intervals (as indicated) from the DD floor pile lines.

S-503

Detail A4

Please confirm if CJs are required for the CIP floor shown in section A4 on S-503.

Contractor must submit Construction Joints per Section 03 31 30, Paragraph 1.4, SD-02 Shop Drawings. For cast-in-place floor provide construction joints at longitudinal centerline of DD3.

The Contractor may provide construction joints to break up the re-entrant corners near the head and entrance of DD3. The Contractor may also provide construction joints to limit the volume of concrete placed in a single day.

376 G-104

Site Access Note 2.

Site Access Note 2 on Sheet G- 104 states, "Topside Access around Dry Dock 3 will not be available until April 2026." Once topside access is granted, can the civil and utility demolitions for the topside areas proceed as detailed in the plans and specifications? Or will certain utilities need to stay in service until the full dry dock is available in September 2026.

Once "Topside Access" is granted, site demolition may begin. Unless otherwise indicated in the plans, utility services do not need to remain active once "Topside Access" is granted.

377 EP603

Substation Platform One-line Diagram

Please provide conduit & cable information for the following Circuits: DD#-PMS-1 to Relocated Substations P1G and P1E, DD#3-PMS-2 to Relocated Substation P1F.

See amendment detail below.

378 EP402

Generator Platform

Please provide conduit & cable information for the following Circuits: Government furnished 1.5MVA Generator to 2 each Government furnished Transformers for Jumper stations LVCB3-SP-8 and LVCB3-IP-7

No conduit is required between the generator and transformers on C1/EP402. Conductors at this location will be furnished and installed by the Government. See amendment detail below.

379 ED112 Keynote 4

The FA Risers (#5S and #6S) indicated on this drawing list Keynote 4, which doesn't seem to apply to this equipment. The same question applies to the FA Riser on ED113 Keynote 5.

Please clarify if these notes apply to the FA Risers.

SC302 &

S-601 Detail A1 and A3

Detail A1 on SC302 indicates the top of pile at EL. 106.0 and the pile tip at EL. -35.0, which yields a length of 141 FT. The bid length provided in S-601 is 145 FT. Please advise if the Contractor is able to drive the pile past the tip elevation such that the top of the pile remains at the top elevation specified at EL. 106.0.

Please advise if the same methodology can be applied to the *S31 sheet piles that are driven to El. 30.0 in Detail A3 on

SC302

See amendment detail below.

Please confirm that hauling trucks transporting material to and from the stockpile area do not need to go through truck inspection every time after exiting the CIA.

For bid purposes, assume trucks will need to be reinspected each time prior to entering the CIA.

382 SD-511

Please provide a width and a depth for each type of crack repair in order to calculate volume of material for Bid Items 0001N & Bid Item 0001O.

Propose in accordance with the solicitation.

383 n/a 31 52 00 1.4.4.4

Specification section 31 52 00 Paragraph 1.4.4.4 page 6 states "A responsible operator capable of starting, finishing and maintaining the dewatering system and starting standby equipment must be on duty at all times. Some responsible person must continuously monitor the dewatering and surface water central systems, until the Contractor has received approval from the Contracting Officer that he may discontinue groundwater control." Please confirm "on duty at all times" will allow for a responsible operator to be "on-call", not necessarily on-site, 24 hours a day x 7 days a week while groundwater control efforts are ongoing.

Confirmed, "on duty at all times" should be interpreted as "on-call" 24 hours a day x 7 days a week during dewatering system operations.

03 30 00 & 03 31 30

2.3.1.1 2.2 2.4.1

Can Type1L cement be used on this project? The specs only mention Type1/II. Type 1L is currently being used on other NAFAC projects. (Spec Section 03 30 00 Paragaph 2.3.11 - Portland Cement note a, (Spec Section 03 31 30, Paragraph 2.2 -

For Sections 03 30 00 and 03 31 30, the use of Type IL in combination with supplementary cementitious materials is acceptable. See amendment detail below.

Cementitious Flowable note a) (Spec Section 03 31 30, Paragraph 2.4.1 - Portland Cement)

Please provide a plan view depicting the extents of the dewatered elevation 50 and elevation 35 in and around the dry dock.

The limits of dewatering to EL 35 are confined to the area within the Wet Well excavation support system and the sheeted excavation area for the Intake Sump.

The limits of dewatering to EL 50 are bounded by the outer crane beam on the north side of Dry Dock 3 (DD3), the outer crane beam around the head of DD3, the outer crane beam on the south side of DD3, and the river walls/DD3 entrance to the east.

386 S-502 Note #3

Are there any detail specifications on quick setting mortar as described on note #3 of sheet S- 502? What is the approval criteria?

See amendment detail below.

Can pipe pile splices be "chill" rings on the inside of the pipe OR must the splices by rolled steel plate welded to the outside of the pile?

Pipe pile splices are CJP, thus chill/split rings placed inside of the pipe pile are acceptable forms of stay in place backing, e.g.

single bevel groove weld with backing.

388 15 01 57

19.00 22

1.7.1.1 .1

Please confirm that any excavated soil that is not reused on-site must be disposed of at a RCRA Subtitle-D compliant, permitted landfill.

Confirmed, any excavated soil that is not reused on-site must be disposed of at a RCRA Subtitle-D compliant, permitted landfill.

Is Type1L cement going to be able to be used in lieu of Type I/II? The specs do not mention any other portland cement other that Type I/II.

See amendment detail below.

A102 & A701

Detail A1/A-701 indicates a 4" backsplash for the solid surface countertop along the adjacent north wall of the space where the Base Cabinet in located. Is a similar backsplash required along the adjacent west wall?

The intent is to have 4" backsplash at the base cabinet only.

391 A-301 A3/A-301

Is there a layer of GWB on the top side of the GWB ceiling in the Wet Well building? If so, what is the Finish required for the layer of GWB?

There is only finished GYP on the bottom side of the ceiling bounding the Console (114), Toilet (115), and Lockers (116).

The soffits South of the Locker room is also finished on the underside only. Refer to the finish schedule on A-701.

392 A-202 SK #46

Sheet Keynote #46 on A-202 states "Galv metal mesh partitions and hinged door with shop enamel finish.". Spec section 10 22 13 2.5.3 states "Thoroughly clean ferrous metal, treat with phosphate, and paint with black enamel in the shop.". Please confirm that this metal is to be galvanize prior to being painted with a shop enamel finish.

See amendment detail below.

10 10

00.20 3.1.1

Spec section 10 14 00.20 3.1 includes some sentences that appear to be from another section.

Please confirm this paragraph.

Section 10 14 00.20, Paragraph

3.1.1 is included to describe anchorage requirements for interior signage in the interior spaces of the facility.

394 M-651

Vertical drainage pump schedule Note 2 states that "motor must be non-overloading over entire pump curve". This should be revised to state that "motor must be non-overloading over the full range of specified operating points".

Mixed flow pumps, due to their high specific speed and low impeller blade angles inherently exhibit a rising HP characteristic curve with decreasing flow. As such, it is normal practice to only size the motor to cover specified operating points. The motor should not be sized to cover the HP all the way back to zero flow.

This would require dramatic oversizing of the motor (700HP).

Please confirm the pump motor is to be non-overloading over specified operating points and not over entire pump curve.

Concur, the motor must be non-overloading over the scheduled operating points. The motor is not required to remain non-overloading back to zero flow.

See amendment detail below.

395 2820 35 45 01 2.5

Please clarify that submerged pump parts that are corrosion resistant surfaces will not be coated. Wetted pump materials are specified as corrosion resistant 316L SS (column and elbow) and 958 Bronze (bowl).

Concur, there is no requirement for coating these components.

396 2824 35 45 01 3.2.1

Dry testing the pumps as specified is not feasible. Per paragraph 2.1 pumps are specified as open line-shaft product lubricated. Dry testing as

Dry testing of these units will not be required.

assembled product such as lubricated vertical line-shaft pump will cause damage to pump bearings and line-shaft. Please confirm dry testing of these units will not be required.

397 2993 23 05

48.19 1.2.3

Vertical lineshaft pumps with a below grade assembly longer than 15 feet typically require bracing near the bottom of the pump to pass seismic certification. This is due to the cantilevered configuration of the below grade structure and the large under-turning moments that would be reacted to the lower mounting plate. Please confirm that bracing between the structure (wall or floor in the wet well) will be acceptable. Additionally please provide any construction details for these supports.

Refer to keynote 76 on MP351 and elsewhere. PROVIDE ALL

PUMPS WITH PUMP COLUMN

SEISMIC SUPPORTS (TYP);

DELEGATED DESIGN. TYPE,

ATTACHMENT, AND

SPACING REQUIREMENTS

MUST BE COORDINATED

WITH PUMP

MANUFACTURER.

1442-

23 05

48.19 2.2.1

Referencing the vertical lineshaft pumps with a below grade assembly longer than 15 feet, the length of the below grade portion of the pump is most likely too long for the anchorage at the lower baseplate to handle the loads resulting from cantilevered loads. A such, the pump will need to be braced to the structure below grade, preferable as close to the bottom as possible. Please confirm that bracing between the structure (wall or floor in the wet well) will be acceptable. Please provide bracing details to utilize during construction.

Refer to Keynote 76 on Sheet MP351 and elsewhere. PROVIDE

ALL PUMPS WITH PUMP

COLUMN SEISMIC SUPPORTS

(TYP); DELEGATED DESIGN.

TYPE, ATTACHMENT, AND

SPACING REQUIREMENTS

MUST BE COORDINATED

WITH PUMP

MANUFACTURER.

399 1444 23 05 48.19

2.5 and 3.1

The pump column assembly is specified as 316L Stainless Steel.

The material that would be required for below grade pump bracing in the wet well is not clearly specified. Please clearly specify that any column/pump bracing material below grade in the wet well shall be 316L Stainless Steel, to match the pump column material.

Bracing is indicated by keynote 76 on MP351 and elsewhere as delegated design. Per 23 05 48.19, where dissimilar metals are in contact, provide dielectric barrier to prevent galvanic corrosion. Bracing materials must be suitable for the application, but are not required to be 316L Stainless Steel.

400 1449 23 05

48.19 3.11

Shake table testing is not possible for a vertical pump of this size.

Testing facilities for a machine of this length are not commercially available. The motor, and motor support stand portion of the pump can be shake table tested, but the complete pump is over 60 feet long. Note that the motor specification 23 09 01.00 10 Paragraph 3.2 explicitly states that shake table testing is required for the motor, while the pump specification 35 45 01 does not make any reference to shake table testing. As such, it appears that there is an understanding that the pump can not be shake tested.

Please confirm pump shake table testing will not be required.

Refer to specification 23 05 48.19, Paragraph 3.12 for alternate compliance pathways of the vertical pumps. Shake table testing for these pumps will not be required provided that the requirements of this paragraph are met.

2703-

26 29

01.00 2.3.1

The noted 105 Degree ambient is non-standard and calculates to

40.56 Degrees Celsius. This

would essentially drive the motor rating up to an above NEMA 50 Deg. C rating, which could impact motor characteristics such as amperage, etc. Please clarify the desired ambient temperature rating is industry standard 40 Deg. C.

Provide 104 degree F (40 degree C) rating. See amendment detail below.

402 GI-001

Drawing GI-001 Life Safety Code Analysis has a note on Fire Lanes stating that "PER NAVSEA 8010, SECTION 3-7, A 20 FT. WIDE

FIRE LANE WILL BE

PROVIDED AROUND THE

DRY DOCK AND TO THE

PUMP HOUSE. THE FIRE

LANES WILL BE LOCATED

BETWEEN THE CRANE RAILS

... REFER TO CIVIL'S CP

SERIES OF DRAWINGS FOR

MARKING REQUIREMENTS

FOR THE FIRE LANES."

Please confirm that this fire lane is only required at the completion of the project and is allowed to be removed during the reconstruction of the dry dock and removal and replacement of the crane rails.

Sheet GI001 depicts planned end of construction conditions.

Existing fire lane markings may be removed during construction and replaced per the CP series drawings upon completion of work.

The Contractor must work with the Contracting Officer and Fire Department to maintain fire access and extraction points to buildings and other components during construction, but temporary markings are not required. Note, fire truck access to Buildings M-140 and 1475 will be from the north (Dry Dock 2) side of the buildings during construction.

403 S-550 A4 Note 2

Note #2 states that the outside draft board goes from 24 to 34, bottom El. is +90.0 and top El. is +101.0. 24 to 34 is a difference of 10'. Please advise on the correct elevations for the outside draft boards.

See amendment detail below.

404 33 63 16 2.5.9

Spec 33 63 16 (PDF page 2679) Exterior Shallow Trench Steam Distribution para. 2.5.9 indicates Guides shall be one of two choices. Both Choices are Spider Type (radial). The Steam Support Schedule on drawing MS602 shows Detail D2 on MS503 for a typical Guide Support, as indicated by the column titled “Support Type”. Is it the intent to have a Spider Type Guide incorporated into Detail D2? This issue also occurs for Detail B2 on

MS503.

See amendment detail below.

405 MS503

Detail B

Detail B4 on MS503 shows a Roller Type support for the Steam Line. The Steam Support Schedule on MS602 indicates that at the Roller location, the support type should be an Anchor. Roller type supports allow movement and not used for anchors. Please advise which support is to be used.

The pipe support type of being anchors, guides, or slides is not controlled by the supports shown in the details. The supports shown in the details are for example only. The support type in each installed instance is controlled by the schedules on the MS600 and MF600 sheet series for each piping discipline.

Language to this effect has been added to MS503 and the details showing the guides and anchors on MS502 have been renamed to convey that they are the general examples of anchors and guides.

Additionally the language in Specification 33 63 16 - 2.5.9 has been changed to specify the supports for slides and guides for steam piping. See amendment detail below.

406 MS504

Details C4 and B4

Steam Drip Details indicate running the Condensate Drain Lines to the "Nearest Utility Trench Drain". Is it the intent to run the drain line to the nearest Scupper or run the drain line down to the DD floor drain?

Route to scupper drain within utility trench.

P. 15 of

Instructio ns to Offerors 00 21 00

3.

Factor 4, Safety

Please confirm that the safety statistics requested under Factor 4: Safety (a) (1) are not part of the two page Technical Approach for Safety narrative.

The two-page narrative is only for the technical approach as described under header (3) Technical Approach for Safety.

408 ET105

ET105 sheet note # 2 calls for 2” conduit to S-1475-1. Sheets ET101-ET119 listed no other section where 2” conduit being installed. Confirm if ET105 is the only instance of a 2" conduit requirement.

Confirmed, Sheet ET105, Note #2 calling for 2" conduit from the manhole to S-1475-1 is correct.

ED110,

ED111,

ED112

Note #1 on Pages ED110, ED111, ED112 calls for demolishing of E4 and A23 feeders. Feeder and conduit size and quantities are not provided within the drawings.

Please provide the size of conduit, quantity of cables, and size of cables to be removed.

Based on older record drawings, E4 and A23 circuits consist of 3#350s in 4" conduit.

410 EP162

Please refer to drawing EP162.

Note 9 states"… See sheet EP113A for additional duct bank information…" Drawing EP113A has not been provided. Please provide missing drawing

EP113A.

See amendment detail below.

MF502,

EP103

Referencing drawing MF502, Note 3 on Detail B1 states existing 20A, 120V din-rail mounted white industrial grade duplex receptacle. Referencing drawing EP103, Note 9 states provide 120V duplex receptacle within cabinet. Please confirm it the receptacle is existing or new.

See amendment detail below.

EP111 to

EP118

There are a few instances where an EXISTING duct bank has a tag designation of S1 or S4. For example, Drawing EP111 has an existing duct bank from EMH- 1526 to LVCB3-SP-8 and LVCB3-IP-7 that has 4 conduits labeled as S4. Please confirm any S1 or S4 designation in an EXISTING duct bank are to be considered ES (existing spare).

Duct banks referenced are shown as new duct banks; therefore, these are correctly shown as new conduits.

413 S-525

The taper detailed for the drilled shafts to reduce the diameter from 5ft to 4.5ft presents constructability issues for installing the drilled shafts with temporary casing from the existing grade. Please advise if

Full-depth, 5ft diameter drilled shafts are acceptable for the capstan and bollard foundations in lieu of the variable diameters drilled shafts shown.

the Capstan and Bollard drilled shafts can be installed full depth at the 5ft diameter dimension without a reduced diameter to alleviate this constructability concern.

P-551 / C4 Detail

22 14

29.00 40 2.2.1.7

There are several differences between the drawings and specifications for equipment tag SP-2. Please provide clarification on the requirements for this piece of equipment:

Spec Section 22 14 29.00 40, paragraph 2.2.1.7 states "Provide a waterproof, internally grounded, oil-resistant, Type SO chloroprene power cord, with a three-prong plug of the indicated length." This aligns with detail C4 on drawing P-551. Drawing EP164 does not call out a receptacle for this pump to plug into. Please clarify if a receptacle is required?

Both SP-1 and SP-2 are 208V, 1ph, each with L6-20R receptacles. Only SP-1 requires a control panel circuit. For SP-2, just provide the switch per the pluming spec and L6-20R receptacle. See amendment detail below.

415 EP164

22 14

29.00 40 2.2.1.8

There are several differences between the drawings and specifications for equipment tag SP-2. Please provide clarification on the requirements for this piece of equipment:

Specification 22 14 29.00 40, paragraph 2.2.1.8 states "Provide a wall toggle switch and Type 1, general-purpose enclosure in accordance with NEMA 250." but drawing EP164 shows a 30A 3P non-fused safety switch controlling power to the pump.

Please clarify which equipment is required?

Both SP-1 and SP-2 are 208V, 1ph, each with L6-20R receptacles. Only SP-1 requires a control panel circuit. For SP-2, just provide the switch per the pluming spec and L6-20R receptacle. See amendment detail below.

E-762/P- 551/P-

Circuit 29 on LV1 Panelboard schedule (E-762) shows a circuit for SP-2 Control Panel, but P-651 in the remarks column states "manual switch" which aligns with detail C4 on drawing P-551 and Specification 22 14 29.00 40 paragraph 2.2.1.8. Is a control panel required, if so please provide additional information for procurement of a control panel.

Both SP-1 and SP-2 are 208V, 1ph, each with L6-20R receptacles. Only SP-1 requires a control panel circuit. For SP-2, just provide the switch per the pluming spec and L6-20R receptacle. See amendment detail below.

E-762/P- 551/P-

Drawing P-651 shows SP-2 to be 1-phase 208V, but on multiple drawings it is showing a 480V power feed for this piece of equipment coming from MCC1.

Additionally, there is no assigned 2 pole breakers in LV1 or LV2 for SP-2. What is the correct supply voltage for SP-2 and where will the feed for this piece of equipment come from?

Both SP-1 and SP-2 are 208V, 1ph, each with L6-20R receptacles. See amendment detail below.

418 E-762 26 20 00 2.19.1.

Circuit 6 on LV2 Panelboard Schedule shows a space heater circuit for MCC2 but specification 26 20 00 Paragraph

2.19.1.9 states that only outdoor enclosures require space heaters and thermostats with control power coming from internal control power transformer. How should the space heaters be powered for this piece of equipment?

Provide power per Sheet EP162.

See amendment detail below.

419 E-762 26 24 13 2.2.7

Circuit 7 on LV2 Panelboard schedule shows a space heater circuit for SWBD1 but specification 26 24 13 paragraph

2.2.7 says the heaters are to be powered from internal control power transformer internal to switchboard. How should the space heaters be powered for this piece of equipment?

Provide power per Sheet EP162.

See amendment detail below.

E-762, E-663

Circuits 10,18, & 20 on LV2 Panelboard schedule shows several circuits for MCC1 Protective Relays, but E-663 only shows (1) Relay. Please Provide clarification on the following items:

1) Can all protective relays be powered from (1) circuit and a common 120V buss that runs through out the motor control center?

2) How many protective relays are supposed to be provided with

MCC1?

There is only one relay on the main. Connect to Panel LV2, circuit 10.

E-762/E-

Circuits 9,17, and 19 on LV2 Panelboard schedule (E-762) shows circuits for MCC2 Protective Relays, but the one line diagram for MCC2 (E-662) shows the protective relays being powered from an internal control power transformer on a common AC bus. Please advise which power source is correct?

If protective relays are to powered from LV2 and not from internal control power transformer please provide details on which of the

(8) protective relays are to be power from circuits 9,17, & 19.

There are eight protective relays shown on E-662. They should be powered from an internal CPT per E-662.

422 E-762 26 20 00 2.17.3

Circuit 26 on LV1 Panelboard schedule (E-762) shows a circuit for SP-1 Control Panel.

Specification 26 20 00, paragraph

2.17.3 states that 120V will be derived from control transformer in same enclosure. How should 120V power for control power be supplied for this piece of equipment (SP-1 panel or via transformer in the same enclosure)?

Provide power from Panel LV1.

See amendment detail below.

E-762, EP164

The panelboard schedule for HV1(E-762) and Control Level power plan (EP164) show (6) circuits feeding the space heater circuits for DP-1 through DP-6.

Typically motor space heaters are de-energized when motors are running and controlled by an aux contact from soft starter/motor starter within the distribution gear. Can (1) 480V circuit be brought to the switchgear and a 480V space heater bus be used to feed all associated heaters for DP- 1 through DP-6?

Provide circuiting as indicated on the drawings.

424 E-060

The legends for receptacles on Drawing E-060 are showing several call outs for receptacles to be GFI,weatherproof in stainless steel back box. Please provide clarity on the items below:

1) Are all receptacles to be GFI

2) Do recessed receptacles need

1) Yes, all receptacles are to be

GFI.

2) Yes, recessed receptacles must have stainless steel back boxes and in-use covers.

to have stainless steel back boxes and in-use covers?

E-664/E-

662/EP1

A Mechanical PLC Cabinet is called out on drawing E-664, but the cabinet location and any additional information on the requirements of this piece of equipment seems to be absent.

Please provide the following details:

1) Location of Mechanical PLC/Control Panel

2) List of equipment to be controlled/monitored by Mechanical PLC/Control Panel

3) Detail on how the Mechanical PLC/Control panel will operate with the dry dock control panel.

1) Provide mechanical as needed in the control level of the pumpwell.

2) Refer to points list on M-8XX sheets.

3) Refer to sequence of operations on M-8XX sheets.

426 40 60 00 2.9.1.8

Specification 40 60 00 paragraph

2.9.1.8 states the chart recorders must operate using 120VAC but there is nothing on the power plans or panelboard schedules showing the location of this power feed. Please clarify how will the Chart recorders receive 120V power?

See amendment detail below.

427 E-663

Please provide additional information on the requirements for the PLC's shown internal to SWBD1,MCC1 and MCC2.

1) Can a basis of design for PLCs located in equipment be provided?

2) What I/O and functionality will the PLC's have?

1) PLCs are common control devices with multiple manufacturers meeting the requirements to perform the sequence of operations for the electrical system. AE recommends consulting equipment vendors for system and pricing.

2) Functions to be provided per sequence of operations of the electrical system. Bid per the solicitation.

EP162/E

-661

There are (3) conduits to the left of the ATS on drawing EP162 with a keynote 7 call out. Keynote 7 states "GENERATOR TO

XMFR AND ATS CONDUIT

PENETRATIONS, SEE SHEET

E-661 FOR ADDITIONAL

INFORMATION." please provide clarification on the following items:

1) EP162 shows (5) conduits penetrations on the east side of the wet well wall. Drawing E- 661shows (3) conduits required for generator to step up transformer and (2) from generator to ATS. The opposite is represented on EP162.

2) If conduits can enter the bottom of the ATS can these be installed coming into the bottom of the cabinet? this will prevent any issues with getting (2) 4" conduits into the top of the equipment due to limitations of conduit bending and conduit fittings with the conduits coming up so close to the ATS.

3) There are no penetrations shown under LV1, Gen Brkr in MCC2 and 750KVA step up transformer like called out in item #1, are these to run through the pump level and stub up under the equipment like shown on E-661?

1) See amendment detail below, for updated EP162.

2) The intent of turning up from below and entering the ATS from above was avoid congestion with the mechanical piping below. If the KTR can coordinate with all other lighting, mechanical and plumbing equipment / piping, then the ATS can be entered from the bottom.

3) Yes, install per E-661 though coordination with lighting, mechanical and plumbing equipment / piping is required.

429 E-762 26 32 15.00

2.14.3.

Circuit 12 on LV2 panelboard schedule calls out a feed for the generator annunciator panel, but specification 26 32 15.00 Paragraphs 2.14.3.2 and 2.14.4 states the power for the remote annunciator should be supplied by battery back which is assumed to be from the system in the generator. Typically the annunciator panels are powered through an RS-485 cable and/or through wet contacts on the local an nicator panel. If the interpretation of the specification requirements is different from what is intended, please provide

Section 26 32 15.00, Paragraph

2.14.3.2 only applies to the battery charger itself that is located in the generator enclosure, not the remote annunciator located in the Pumpwell.

Section 26 32 15.00, Paragraph

2.14.4 refers to batteries separate from the generator batteries. The "storage batteries" are to be located inside the annunciator panel and are to provide battery backup for the annunciator panel only.

further clarification and if the 120v power feed is needed.

430 E-762 26 32

15.00 2.29.3

Circuit 1 on LV2 panelboard schedule calls out a feed for the load bank controls but specification 26 32 15.00 paragraph 2.29.3 states "Cooling fan and control power shall be derived internally from the main load bus. The cooling fan shall operate at AC line voltage. Load control circuits and fan motor control shall operate at 120V, via control power isolation transformers."

If the manufacturer is able to meet the requirements of the specification (i.e. fan power is internally derived) is circuit 1 from LV2 still required?

If control power can be derived by other means from LV2, then it is acceptable.

431 MP351

Drawing MP351 shows (2) Air Bubbler Control Panels but the panelboard schedules and power plans are absent on any 120v power requirements for these control panels. Are power feeds required for this equipment?

See amendment detail below.

432 EP162

Drawing EP162, area of the interior stairwell (near grid A/1) , there is a double doored cabinet/panel on the exterior wall of the stairs shown in light font.

Please provide information on this piece of equipment, it is not detailed anywhere else.

See Sheet I-102.

35 45

04.00 10 2.4.6

Specification 35 45 04.00 10 paragraph 2.4.6 states there should be leakage alarms but these are not indicated on the P&IDs. Will these alarms be required for the (4) environmental pumps? If so, please provide additional wiring requirements.

Alarms are not required. They do not indicate to either SCADA or the DCP.

434 M-864 35 45

04.00 10

On drawing M-864 it calls out multiple vibration alarms for the environmental pumps 1,2,3, and

4. After review of the specifications for these

Specification requires that all factory sensors to monitor points and alarms indicated in the contract drawings be provided. It submersible pumps it is absent on any vibration requirements.

Where will the vibration sensing probes be installed?

is acceptable to do this with built in sensors.

E-532/E-

Breaker sizes for multiple pieces of equipment in MCC1 show different breaker sizes between drawings E-532 and E-761.

Please provide the correct breaker sizes for each piece of equipment.

Breaker sizes have been updated.

See amendment detail below.

M- 651/E-

562/EP5

35 45

04.00 10

2.2.1 / 3.3.3

Drawing M-651, note 3 for Submersible pumps EP-1, EP-2, EP-3, and EP-4 states to coordinate length of submergence cable with disconnect location.

With the only disconnect location shown on the drawings to be MCC1, is the design intent to take the submergence rated cable with both the control and power cables from the pump directly to the MCC, or is the contractor expected to follow keynote 3 on drawing EP501 in the suction chamber and once it penetrates through to the pump level, a junction box will be needed, and it will transition to the cables called out on E-562 and run in conduit to MCC1. Please confirm how cables need to be routed in order for maintenance/replacement of pumps with guide rail system called out in Specification 35 45

04.00 10, paragraph 2.2.1, and met the requirements of paragraph 3.3.3.

Submergence rated cable is to be routed directly to the MCC.

437 E-561

Detail C1 on Drawing E-561, shows a fuse box strut mounted to handrail. Can you please provide a basis of design and/or more information on the requirement for this fuse box?

The fuse box has been removed.

See amendment detail below.

E-661/E-

The circuit from SWBD-1 to T-1 it shows two different conduit sizes on different drawings. On drawing E-661, it shows 3#4,#8G IN 1-1/4" C and on drawing E- 562 it shows 3#4,#8G IN 1" C.

What is the correct size conduit for this equipment feeder?

See amendment detail below.

FA651/E

L161

Are the two occupancy sensors shown on EL161 for control of

Normal occupancy just for the locker and toilet rooms.

the lights during normal occupancy or for keynote 39 on drawing FA651.

440 EL161 26 51 00 2.5.1.3

Specification 26 51 00 paragraph

2.5.1.3 states that occupancy sensors should have an operating voltage of 277 volts. In regards to the lighting shown on EL161 the occupancy centers are to control 120V lights. Are 120v rated occupancy sensors acceptable or should sensors be rated for 120/208/277? Can lights with built in occupancy sensors be used if they meet the specification requirements?

Provide 120V sensors. Provide separate sensors as shown on the drawings.

441 E-662 26 20 00 2.19.1.

5 C

Specification 26 20 00, paragraph

2.19.1.5 C states " The following

equipment shall be provided for the starter type indicated in paragraph 2.06B". There is nothing under paragraph 2.06 stating any requirements for starters. The same goes for C.1.B where it states "one motor protection relay (MPR as specified in 2.10) herein after specified". Please provide requirements for starters and motor protection relays.

2.06B' is a typo. All requirements are listed in 2.19.1.5.C. Same for the '2.10' reference.

442 26 20 00 2.19.1.

The table for main breaker ratings in Specification 26 20 00, paragraph 2.19.1.7 is blank.

Please provide the values for this table.

See amendment detail below.

EP162/E

-661/E-

Multiple drawings show the layout of MCC2 of the main breaker, generator breaker and motor feeder breakers in different orientations. What is the correct layout of the breaker cubicles?

E-562 has been corrected to show the main and gen breaker in the middle of the lineup. See amendment detail below.

EP162/E

-661

In lieu of using mechanical seals for conduits that penetrate the concrete walls at the pump well/wet well, can conduits be embedded in the concrete or grouted if installed after the concrete is poured? There will be limited access to these locations for maintenance of the seals.

Embedded conduits are acceptable.

445 EP164 40 60 00 3.2.9

What specification and paragraph would be applicable for the control power transformer called out on drawing EP164 keynotes

Concur, Section 40 60 00, Paragraph 3.2.9 is applicable to the control power transformer

2&3? The assumption is Specification 40 60 00 paragraph 3.2.9 called out on Sheet EP164, Keynotes 2 & 3.

446 MH152

EF-3 looks to be an exhaust fan for the bathroom. This exhaust fan does not seem to be controlled by a switch. Should this fan be constantly on, or is a switch required?

The bathroom light switch is to activate the fan. See amendment detail below.

447 MI752

Drawing MI752, shows both EF-1 and EF-2 with Disconnect/Safety switches, but on EP162 it shows no disconnect/safety switches on the drawing. Will EF-1 and EF-2 require disconnect switches?

Specification 23 30 00 Paragraph

2.10.4 requires a factory-installed safety disconnect switch in the fan housing.

448 MI752

RTU-1 on drawing MI751 shows a binary input (BI6) for HVAC emergency shut down. Should EF-1 and EF-2 be shut down as well in an emergency event?

No, EF-1 and EF-2 should not shut down in an emergency event.

449 MI752

The motorized Dampers for EF-1 and EF-2 are shown normally open but the sequence below states they should be controlled by adjustable set points. Should these dampers be normally open or normally closed when Exhaust fan EF-1 and EF-2 are not running?

These dampers must close when the exhaust fans are de-energized as stated with SOO. "NO" applies to failure event, the intent is that these dampers must fail open. See amendment detail below.

450 S-514 Detail A1 & A3

Details A1 & A3 callout three #9 bars that are to be post installed.

Please confirm that any bars not specifically called out in the detail are not required to be post installed.

The intent to post install #9 wall dowels for a class B lap splice between wall and floor was to provide room to set the precast panels. Alternatively, the Contractor may place the #9 dowels at 12" centers at the diaphragms and at 24" staggered spacing between diaphragms with standard hooks developed per C4/S-004, Development Length (Ldh) = 24 inches, without ties or stirrups as shown.

Confirming, bars not shown (grouted in) or called out as post-installed are not required to be post-installed.

451 S-515 Detail A2

Detail A2 shows a joint in the wall at 6' 3" from the center line of the diaphragm. This joint is called out as a partial contraction joint but appears to be drawn as a construction joint. Please clarify

In the case of A2/S-515 this joint is an ACI 350 Partial Contraction Joint, and a vertical wall construction joint, when the PCJs are spaced at 25 ft centers then 50% of the reinforcing crossing the joint (every other bar) is if a construction joint required at the dimension called out.

terminated at the joint, similar to A3/S-005 without watershop, or double chamfer joints.

A2/S-515 specifically notes to terminate 50% of the horizontal reinforcing at this joint.

ET112,

ET601

Please reference drawing ET112.

There is a duct bank designation "M2" that travels between TMH2401 and TMH2402. The M2 designation does not show up on the Telecomm Schedule drawing ET601. Please provide the conduit and cable details for tag "M2"

See amendment detail below.

EP106,

EP118

Please reference drawing EP106.

The Contractor is to install a new ductbank exiting EMH2030 (heading plan North) and tie it into an existing ductbank that is originating out of EMH-1306.

Referencing drawing EP-118 there are duct bank tags of D01, T01, T1, and F that are in the existing ductbank to be intersected. These designations are not carried through to the new section of ductbank after the tie-in point. Please confirm that these conduits and cables can be cut and capped and that no interim or temporary power is required for whatever equipment they are currently powering.

Coordinate between EP106 and ET106 for power conduits and telecommunication conduits. See amendment detail below.

454 31 51 01

1.2 and 2.8

Specification 31 52 01 section 1.2 lists PTI DC35.1 Recommendations for Prestressed Rock and Soil Anchors. The 31 52 01 specification and the plans do not detail whether any corrosion protection requirements are applicable. PTI DC35.1 does provide recommendations - No protection or Class II protection for Temporary, Less than 2 years and either Class I or Class II protection for Temporary over 2 years or permanent. The anchors for this project are used for the temporary excavation support system for the wet well, but will be left in place permanently. It is also unclear if the tiebacks are

The tiebacks are permanent, the concrete wet well walls will be formed as they are in place. The corrosion protection for over 2 years should be followed per the PTI DC35.1 and utilize Class 1 protection.

part of the…