W912DS-16-B-0014-0004.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

The purpose of this amendment is to:

1)Revise and reissue 1442 section 00 10 00 bid schedule, and section 00 73 00 Special Contract Requirements 2)Revise and reissue multiple specifications sections 3)Revise and reissue multiple plans sheets 4)Extend the bid opening date from 04 October 2016 at 2:00 PM (EST) to 13 October 2016 at 2:00 PM (EST).

1. CONTRACT ID CODE PAGE OF PAGES

J 1 26

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

16C. DATE SIGNED

BY 03-Oct-2016

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 W912DS-16-B-0014

X 9B. DATED (SEE ITEM 11)

08-Aug-2016

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 X is extended, 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

03-Oct-2016

CODE

US ARMY CORPS OF ENGINEERS, NEW YORK

26 FEDERAL PLAZA, RM 1843

NEW YORK NY 10278-0090

W912DS 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912DS-16-B-0014

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

The following items are applicable to this modification:

SUMMARY OF CHANGES

1. The following changes are made to the plans:

Revise and reissue Sheets:

C-101, C-102, C-104, C-301;

S-001, S-100, S-101, S-105, S-212, S-303, S-400, S-401, S-403, S-404, S-700, S-702, S-901;

Q-800;

E-202, E-702, E-801, E-803, E-804

2. The following changes are made to the specifications:

Revise and reissue the sections below:

Section 00 10 00 – Bid Schedule Section 00 73 00 – Special Contract Requirements Section 00 90 02 – Permits Section 01 22 00 – Measurement and Payments Submittal Register Section 01 55 26 – Traffic Control Section 01 57 23 – Temporary Storm Water Pollution Control Section 03 31 00 – Cast-In-Place Structural Concrete Section 03 39 00 – Concrete Curing Section 05 50 15 – Civil Works Fabrications Section 11 82 15 – Automatic Trash Rake/Rack Systems Section 25 14 01 – Pump Station Instrumentation and Control Panels Section 31 41 16 – Metal Sheet Piling Section 32 93 00 – Wetland Vegetation Planting Section 35 01 42 – Vertical Gate Lift Systems Section 35 41 00 – Levee Construction

3. BID SCHEDULE: Section 00 10 00 is deleted in its entirety and replaced with the REVISED BID SCHEDULE attached below.

4. CONTRACTOR INQUIRIES: Attached below in this amendment are the USACE responses to contractor submitted Requests for Information.

5. BID OPENING: The Bid Opening date is hereby changed from 04 October 2016 to 13 October 2016. The time of the BID OPENING remains unchanged at 2:00PM EST.

All other terms and conditions remain unchanged.

NOTE: Bidder must acknowledge receipt of this amendment by the date specified in the solicitation (or as amended) by the following method: in the space provided on the SF 1442, by separate letter by signing block 15 below.

FAILURE TO ACKNOWLEDGE AMENDMENT BY THE DATE AND TIME SPECIFIED MAY RESULT IN

REJECTION OF YOUR BID IN ACCORDANCE WITH THE LATE BID, LATE MODIFICATION OF BID, OR

LATE WITHDRAWAL OF BID (FAR 14.304).

SECTION 00 10 00 – REVISED BID SCHEDULE

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0001 1 Job Mobilization and Demobilization

FFP

NET AMT

0002 1 Job Cofferdam

0003 1 Job Dewatering and Diversion Canal

0004 1 Job Site Work

0005 3,710 Ton Riprap Revetment

(ESTIMATED QUANTITY)

0006 1 Job Steel Sheet Pile Wing Walls & Floodwall

0007 1 Job Levee

0008 10,075 Linear

Foot

Steel Pipe Piles

(ESTIMATED QUANTITY, SEE NOTE 2)

0009 1 Job 120-CFS Pump Station

0010 1 Job Tide Gate Structure

0011 1 Job Vertical Life Gate

0012 1 Job Control Building

0013 1 Job Electrical and Telecommunication

0014 1 Job Generator and Fuel System

0015 1 Job Generator Building

0016 1 Job Erosion and Sediment Control

0017 1 Job Wetland Vegetation Planting

0018 1 Job Electric Utilities Installation

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0019 1 Job

Electric Utility Materials & Inspection

FFP

(SEE NOTE 3)

NET AMT

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0020 1 Job

Telecommunications Utility

FFP

(SEE NOTE 3)

NET AMT

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0021 .12 Credits

Wetland Mitigation Bank Credits

FFP

(Estimated Quantity)

NET AMT

$47,000.00

$47,000.00 NTE

$6,000.00

$6,000.00 NTE

0022 1 Job

OPTION OPTION 1

Liability Insurance (See Notes 4 and 9)

0023 1,800 Cubic

Yard

OPTION OPTION 2

Contaminated Non-Hazardous Materials

(ESTIMATE QUANTITY, SEE NOTE 10)

0024 6 Months

OPTION OPTION 3

FFP

Government Field Office

(ESTIMATED QUANTITY, SEE NOTE 11)

0025 6 Months

OPTION OPTION 4

FFP

(ESTIMATED QUANTITY, SEE NOTE 12)

0026 6 Months

OPTION OPTION 5

FFP

(ESTIMATED QUANTITY, SEE NOTE 13)

0027 6 Months OPTION Option 6

FFP

Government Field Office

(ESTIMATED QUANTITY, SEE NOTE 14)

FOB: Destination

0028 .03 Credits OPTION Option 7

FFP

Wetland Mitigation Bank Credits

(ESTIMATED QUANTITY, SEE NOTE 15)

0029 .04 Credits OPTION Option 8

FFP

Wetland Mitigation Bank Credits

(ESTIMATED QUANTITY, SEE NOTE 16)

0030 .05 Credits OPTION Option 9

FFP

Wetland Mitigation Bank Credits

(ESTIMATED QUANTITY, SEE NOTE 17)

0031 .06 Credits OPTION Option 10

FFP

Wetland Mitigation Bank Credits

(ESTIMATED QUANTITY, SEE NOTE 18)

0032 .07 Credits OPTION Option 11

FFP

Wetland Mitigation Bank Credits

(ESTIMATED QUANTITY, SEE NOTE 19)

0033 1,800 Cubic

Yard

OPTION Option 12

Over Excavation (Estimated Quantity, See Note 20)

TOTAL BASE (LINE ITEMS 0001 THROUGH 0021): ______________________________________

TOTAL OPTIONS (LINE ITEMS 0022 THROUGH 0033): ___________________________________

TOTAL BID (LINE ITEMS 0001 THROUGH 0033): ________________________________________

NOTES:

1. BIDDERS MUST PRICE ALL LINE ITEMS ON THE LINE ITEMS AND PRICING SCHEDULE OR

OFFER WILL BE REJECTED

2. THE ESTIMATED QUANTITY OF PILES LISTED IN THE UNIT PRICE SCHEDULE ARE GIVEN

FOR BIDDING PURPOSES ONLY.

3. NOT TO EXCEED ALLOWANCE AMOUNT SHOWN IN THE LINE ITEM IS TO BE INCLUDED IN

THE BID AS SHOWN AND NOT CHANGED. ACTUAL PAYMENT WILL BE BASED ON ACTUAL

COSTS UP TO THE NOT TO EXCEED AMOUNT.

4. THE AMOUNT BID WILL BE THE MAXIMUM AMOUNT PAYABLE. ACTUAL PAYMENT WILL

BE BASED ON ACTUAL COSTS

5. THE LOW BIDDER FOR PURPOSES OF AWARD WILL BE THE CONFORMING RESPONSIBLE

BIDDER OFFERING THE LOWEST AMOUNT FOR THE TOTAL BID.

6. ANY BID WHICH IS MATERIALLY UNBALANCED AS TO THE PRICE FOR THE LINE ITEMS

MAY BE REJECTED. AN UNBALANCED BID IS ONE WHICH IS BASED ON PRICES

SIGNIFICANTLY LESS THAN THE COST FOR SOME WORK AND PRICES SIGNIFICANTLY

OVERSTATED FOR OTHER WORK.

7. BIDDERS ARE REQUIRED TO BID ON ALL ITEMS ON THE BID SCHEDULE OR THEIR BIDS

WILL BE REJECTED.

8. BIDDERS ARE REMINDED THAT THEY MUST BID ON THE ISSUED PLANS AND

SPECIFICATIONS AS AMENDED. ANY DEVIATIONS, CONDITIONS, OR ATTACHMENTS MADE

BY THE BIDDERS THERETO MAY RENDER THE BID NON-RESPONSIVE AND BE CAUSE FOR

ITS REJECTION.

9. IF OPTION 1 IS EXERCISED, LINE ITEM 0022 WILL BE EXERCISED WITHIN 60 CALENDAR

DAYS OF ISSUANCE OF THE BASE BID NOTICE TO PROCEED. NO ADDITIONAL TIME WILL

BE ADDED TO THE CONTRACT PERFORMANCE PERIOD.

10. IF OPTION 2 IS EXERCISED, LINE ITEM 0023 WILL BE EXERCISED WITHIN 920 CALENDAR

DAYS OF ISSUANCE OF THE BASE BID NOTICE TO PROCEED. NO ADDITIONAL TIME WILL

BE ADDED TO THE CONTRACT PERFORMANCE PERIOD.

11. CONTRACTORS SHALL BID LINE ITEM 0024 AS A UNIT PRICED ITEM. IF OPTION 3 IS

EXERCISED, LINE ITEM 0024 WILL BE EXERCISED WITHIN 1012 CALENDAR DAYS OF

ISSUANCE OF THE BASE BID NOTICE TO PROCEED. NO ADDITIONAL TIME WILL BE ADDED

TO THE CONTRACT PERFORMANCE PERIOD.

12. CONTRACTORS SHALL BID LINE ITEM 0025 AS A UNIT PRICED ITEM. IF OPTION 4 IS

EXERCISED, LINE ITEM 0025 WILL BE EXERCISED WITHIN 1012 CALENDAR DAYS OF

13. CONTRACTORS SHALL BID LINE ITEM 0026 AS A UNIT PRICED ITEM. IF OPTION 5 IS

EXERCISED, LINE ITEM 0026 WILL BE EXERCISED WITHIN 1012 CALENDAR DAYS OF

14. CONTRACTORS SHALL BID LINE ITEM 0027 AS A UNIT PRICED ITEM. IF OPTION 6 IS

EXERCISED, LINE ITEM 0027 WILL BE EXERCISED WITHIN 1012 CALENDAR DAYS OF

15. CONTRACTORS SHALL BID LINE ITEM 0028 AS A UNIT PRICED ITEM. IF OPTION 7 IS

EXERCISED, LINE ITEM 0028 WILL BE EXERCISED WITHIN 1042 CALENDAR DAYS OF

16. CONTRACTORS SHALL BID LINE ITEM 0029 AS A UNIT PRICED ITEM. IF OPTION 8 IS

EXERCISED, LINE ITEM 0029 WILL BE EXERCISED WITHIN 1042 CALENDAR DAYS OF

17. CONTRACTORS SHALL BID LINE ITEM 0030 AS A UNIT PRICED ITEM. IF OPTION 9 IS

EXERCISED, LINE ITEM 0030 WILL BE EXERCISED WITHIN 1042 CALENDAR DAYS OF

18. CONTRACTORS SHALL BID LINE ITEM 0031 AS A UNIT PRICED ITEM. IF OPTION 10 IS

EXERCISED, LINE ITEM 0031 WILL BE EXERCISED WITHIN 1042 CALENDAR DAYS OF

19. CONTRACTORS SHALL BID LINE ITEM 0032 AS A UNIT PRICED ITEM. IF OPTION 11 IS

EXERCISED, LINE ITEM 0032 WILL BE EXERCISED WITHIN 1042 CALENDAR DAYS OF

20. CONTRACTORS SHALL BID LINE ITEM 0033 AS A UNIT PRICED ITEM. IF OPTION 12 IS

EXERCISED, LINE ITEM 0033 WILL BE EXERCISED WITHIN 1042 CALENDAR DAYS OF

RESPONSES TO CONTRACTOR INQUIRIES

Question No. 1: Drawing S-101 shows railing on top of the sloped wingwall. No other drawings call for railing on any of the wingwalls, please remove the railing as shown on S-101 on the wingwall.

Response: Railing is required on the Westside Wingwalls, Drawing S-101, S-400 and S-401 have been revised to include the handrails. See revised drawings included in this amendment.

Question No. 2: Drawing S-211, Section CD/S-210 labels a vertical sign as MK S212-7. We believe that is an incorrect mark. Is that sign supposed to be Mark MKS-212-8 as shown on S-212? If so, please clarify how many of these gate gages are required.

Response: The Gate Gage on S-211 labeled as MKS-212-7 is correct. The Gate Gage detail shown on S-212 has been revised to MKS-212-7. The Gate Sill MKS-212-7 detail has been deleted, the Gate Sill is shown on S-705 as MK. S-705-1. See revised drawings included in this amendment.

Question No. 3: Drawing S-212 has a detail for the Gate Sill, Mark MKS-212-7. We believe these are embedded in concrete at bottom of gate locations. Drawing S-705 has a detail for Mark MK S-705-1, and states 3 are required.

We believe MK S-705-1 and MKS-212-7 are for the exact same detail, and are duplicates? Please clarify and eliminate one of these details so there is no confusion.

Response: The Gate Sill detail on S-212 has been deleted; see revised drawing included in this amendment.

Drawing S-705 was revised as part of Amendment #1 and shows the Seal Plate detail MK. S-705-1, and states 2 are required.

Question No. 4: Please provide more details regarding the void between the walls of the pump station and tide gate structure. Drawing S-100 appears to show flowable fill in this area, but the structure drawings never show these areas because they are at a match line. Is the void between these walls supposed to be filled with flowable fill from Elev -9' to +15'? What happens on top of this flowable fill, will it just be exposed to the weather and act as the walking surface at elevation +15'? The stairs shown on S-312 technically land down onto this area but the slab/flowable fill is not detailed.

Response: The voids between the walls and pump station will be filled with flowable fill and topped by 6 inches of concrete. See revised Drawing S-100 included in this amendment.

Question No. 5: Duperon manufactures the flexrake multi scraper type of screen but also the automatic self cleaning trash rack. The plans clearly show a flexrake but there are certain verbiage in the specs like chain instead of links and cars instead of scrapers that would suggest the self cleaning trash rack. Can you confirm that the technology this project is based off of is in fact the duperon flexrake?

Response: The trashrack/rake shall be automatic, self-cleaning per Section 11 82 15, paragraph 1.4.1b. Revised Specification Section 11 82 15 included in this amendment clarifies the requirements.

Question No. 6: Most of our USACE work (Flordia/Louisiana areas) utilize the FlexRake technology. Based on the project specifications themselves, it appears there is terminology from both units throughout while the plans show a FlexRake unit. The debris condition onsite is what strongly dictates which equipment we apply – so as much details in anticipated weights/volume/ and description will be very useful. Also, please identify if there will be any coarse, upstream stationary trashracks (that would keep larger tree trunks, etc isolated from the mechanical screens).

Response: The contract requirements regarding the debris to be handled are provided in Section 11 82 15, primarily in paragraph 1.4.1. There are no coarse stationary trashracks indicated in the contract. The design requirements for the trashrake are given in Section 11 82 15. Revised Specification Section 11 82 15 included in this amendment clarifies the requirements.

Question No. 7: Please reference Specification page number 08 11 13 Page Section 1.2, Weatherstripping in where the second paragraph references “Miami-Dade” protocols and details to be signed by a Professional Engineer licensed in the State of Florida. Please confirm that the U.S. Army Corp of Engineers (USACE) is seeking Miami- Dade and Florida requirements as this is unusual and would typically be listed for the State in where the work is taking place. Which in this case is New Jersey.

Response: Per Spec 08 11 13 the door system including the weatherstripping must meet the requirement of ASTM E1886 or Florida Building Code Testing Application Standards, TAS 201, TAS 202 and 203.

Question No. 8: Please reference Specification page number 08 91 00 Page 3 Section 2.2 Metal Wall Lovers in where a requirements for “Miami-Dade Rated” is indicated as well as testing under procedure of the Florida Building code. Please confirm that the USACE is seeking Miami-Dade and Florida requirements as this is unusual and would typically be listed for the State in where the work is taking place. Which in this case is New Jersey.

Response: Some louver manufacturers offer “Miami-Dade” rated louvers as part of their product line. The “Miami- Dade/Florida” code requirements have largely been adopted as an industry standard for high wind louvers. There are not products listed as New Jersey rated louvers. The louvers shall meet the acceptance requirements when tested under procedures of Florida Building Code Testing Application Standards, TAS 101A, TAS 201, TAS 202 and TAS 203 as indicated in this section.

Question No. 9: Please reference C301 in where the excavation is depicted to extend to between elevation -10 and -

14.0. Please also reference Specification Section 00 90 04 Sediment Sampling and Specification Section 35 41 00 Subsection 3.13 Disposition of Excavated Materials. Please confirm if the materials to be disposed are contaminated, hazardous or unsuitable.

Response: The excavated material referenced in sheet C-301 is considered unsatisfactory, see specification 35 41 00 for material description. See Section 00 90 04 for results of laboratory analyses of sediment sampling.

Spec section 35 41 00 has been revised requiring the contractor to perform excavated material testing. If contaminated non-hazardous materials are excavated Option 2 will be exercised.

Question No. 10: Please reference Drawing Q401 and Q800 in where the foundation for the camera is depicted.

However the location for cameras 1, 2 and 3 are located on top of the concrete pumpstation/foundation walls. Please provide mounting details for Cameras 1,2 and 3.

Response: A mounting detail has been provided for cameras 1, 2 and 3. See revised Q-800 included in this amendment.

Question No. 11: Please reference Drawing E201 and E801, Section 12 in where the mounting details for the lighting are depicted. The mounting details depicted on Section 12 cannot be used. Please provide appropriate mounting details.

Response: See revised Drawing E-801 included in this amendment.

Question No. 12: Please reference Specification Section 01 22 00 Page 5 Subsection 1.4.4, the 4th Line in where the scope of work includes erosion control. However the same Specification Section on Page 7, 1.4.14 the entire section states “Erosion Control”. Please clarify the difference between the scope of work and whether or not one should be removed from the contract.

Response: See revised Specification Section 01 22 00 included in this amendment. Erosion control has been deleted from section 1.4.4. Section 1.4.14 is the appropriate bid item for erosion control.

Question No. 13: Please reference Specification Section 01 55 26 Page 6, Subsection 3.8 in where the Contractor is required to secure a road opening permit from NJDOT. Please provide the cost of the permit. In the alternative please provide an permit allowance item.

Response: See revised Section 01 55 26, paragraph 3.8, included in this amendment. The listed POC’s may be contacted to ascertain permit fees. The contract bid amount should cover any required fees. An allowance amount will not be provided.

Question No. 14: Please reference Specification Section 01 57 23 Page 5 Subsection 3.1.1.5 in where on the 7th and 8th line it requires the Contractor to provide the “appropriate permit fees”. Please provide the amount of the permit fees or in the alternative please provide a permit allowance item.

Response: See revised Specification Section 01 57 23, paragraph 3.1.1.5.c included in this amendment. The listed agency may be contacted to ascertain permit fees. The contract bid amount should cover any required fees. An allowance amount will not be provided.

Question No. 15: Please reference Specification Section 35 20 17 Page 13 Subsection 3.3 Acceptance Trial Operation and Test. Please confirm if the spare gate (referenced in Specification Section 01 22 00 Page 6 Subsection 1.4.9) is to be tested and trial operated as well as the two gates that are to be installed.

Response: The spare gate is to be tested and trial operated as well as the two gates that are to be installed.

Question No. 16: Please reference Specification Section 35 41 00 Subsection 3.3 Excavation in where the 3rd sentence states “Overexcavation shall be performed at the direction and approval of the contracting officer”. Please also reference Drawing S000A, Foundation Note #3 in where the note contains a similar statement. Please confirm the method in which the contractor will be compensated for this work.

Response: See revised Bid Schedule include in this amendment. An Option has been added to the Bid schedule for over-excavation of unsatisfactory soils. If the Contracting Officer determines that it’s necessary for additional excavation beyond what is shown in the contract drawings, the Option will be exercised.

Question No. 17: Foundation Notes #2 & 3 on Dwg. S-000A discuss the potential need to undercut and improve soft soils underneath the foundations. Since large portions of the soil under the project are very soft (weight of hammer) please revise or delete these Foundation Notes so that the Foundation Notes are compatible with the expected soil conditions that have already been incorporated into the design of the pile-supported foundations for the new structures.

Response: See revised Bid Schedule include in this amendment. An Option has been added to the Bid schedule for over-excavation of unsatisfactory soils. If the Contracting Officer determines that it’s necessary for additional excavation beyond what is shown in the contract drawings, the Option will be exercised. Notes 2 and 3 on S-000A will not be deleted.

Question No. 18: Paragraph 1.3.7 of Spec Section 35 41 00 requires the Contractor to be responsible for the engineering adequacy of the Cofferdam. We can understand that the Contractor would be responsible for the adequacy of the Cofferdam if the Contractor changes the Cofferdam design from what is shown on Dwg. S-901.

However, for bidding purposes please clarify that the Cofferdam shown on Dwg. S-901 is adequate in all respects.

Response: The contractor shall design the cofferdam based on his work plan and equipment and considering the loading conditions and other requirements included in the specifications. The cofferdam shown on S-901 is for information only. The contractor is responsible for the design and cost of the cofferdam. Revised specification section 31 41 16 and drawing S-901 are included in this amendment.

Question No. 19: With regard to the detailing of the 18" steel pipe piles, please clarify the following:

a. The detail on Dwg. S-105 for the 18" diameter pipe piles do not show a closure plate at the tip of the piles yet the notes require the piles to be completely filled with concrete. Please provide a closure plate detail for the 18" pipe piles for bidding purposes.

b. The detail on Dwg. S-105 for the 18" diameter pipe piles do not show any steel reinforcement dowels or a small rebar cage at the tops of the piles, which would typically be expected. Please clarify whether or not any rebar needs to be provided for the tops of the pipe piles.

c. Paragraph 2.1.3 of the Pipe Piles Spec Section 31 62 16 only mentions full penetration butt welds for the splices.

Please clarify whether or not welded pipe pile splice rings will be acceptable.

Response: a. The 18” steel pipe piles will be open at the tip, a closure plate is not required. It’s possible that the pipe pile will plug during driving and soil will not reach the top of the pile. Voids at the top of the pile will be filled with flowable fill. For bidding purposes assume that 20 LF of each 18” diameter pile will be filled with flowable fill.

Drawing S-105 has been revised and is included in this amendment.

b. Dowels or rebar cages are not required at the tops of the piles.

c. Pipe Splice Rings will not be acceptable.

Question No. 20: There is a discrepancy in the type of materials to be used for the fabrication of the Rollers. Detail CD/S-702 calls for Ductile Iron while Detail S-703-4/S-703 calls for Duplex Stainless Steel. Please clarify which material is correct.

Response: The Rollers shall be Duplex Stainless Steel. See revised Detail CD/S-702 included in this amendment.

Question No. 21: Please refer to Question No. 36 and its Response in Amendment No. 1. If the Contractor’s approved temporary cofferdam design requires elements that have a larger thickness and/or longer lengths than that shown on the plans for “bidding purposes only”, will the Contractor be compensated via modification for the additional costs incurred due to the increased weight of materials and the additional labor and equipment required to install same? In a similar manner, if the Contractor’s approved temporary cofferdam design requires elements that have a smaller thickness and/or shorter length, will the Contractor be required to provide a credit to the USACE?

Response: Revised specification section 31 41 16 and drawing S-901 are included in this amendment. The cofferdam shown on S-901 is for information only. The contractor is responsible for the design and cost of the cofferdam. The contractor shall bid the cofferdam they intend to construct. The contractor will not be compensated if the cost of the cofferdam is more than the bid amount.

Question No. 22: Page S-105 “Foundation Plan” refer to note 4 at lower right hand corner of the drawing under Detail 1/S-105 but there is no note no. 4 on the drawing. Is missing. Please provide note 4.

Response: See revised Detail 1/S-105 included in this amendment. Reference has been revised to state note 3.

Question No. 23: General Note #4 on Dwg. S-700 makes reference to Spec Section 03 12 00 but the bid package does not include this Spec Section. For now we assume that this reference is incorrect, and we are assuming that Spec Section 35 20 17 - Vertical Lift Gates was the intended reference. Please clarify this issue as soon as possible.

Response: On Dwg. S-700, General Note #4 has been revised to reference Spec Section 35 20 17 and is included in this amendment.

Question No. 24: Regarding the Tide Gate Operating Equipment referencing Sheet M-200 I would like to ask the following question. Can we provide a base bid of a proven alternate design that meets the Corps needs, with additional features and benefits, at a more competitive price?

Response: Bid the plans and specs as shown; no alternative design will be accepted unless it has prior Government approval. See also the Value Engineering-Construction Clause 52.248-3, which is referenced in Section 00 72 00.

Question No. 25: Paragraph 1.2 of Specification Section 05 50 15 - Civil Works Fabrications makes reference to providing detailed drawings for the Vertical Lift Gate. This incorrect reference is confusing to the fabricators and needs to be deleted from this specification sections since the Vertical Lift Gate is covered under Specification Section 35 01 42. Please issue an amendment that deletes the reference to the Vertical Lift Gate in Section 05 50 15.

Response: See revised Specification Section 05 50 15 included in this amendment which has deleted the Vertical Lift Gate submittal.

Question No. 26: Handrail Details Note #4 on Dwg S-001 states that Grounding shall be provided for handrails, but the note does not make reference to the Electrical drawing that provides the Grounding details. Please provide this drawing reference.

Response: See revised Drawing S-001 included in this amendment that now references grounding detail on E-802.

Question No. 27: With regard to Detail 1/S-403, please clarify what type of material and corrosion protection system is to be used for the 3/4" thick bent plate that is to be bolted to the embedded 3/4" thick x 2' wide Stainless Steel plate.

Response: The 3/4" thick bent plate shall be fabricated of Type 316 Stainless Steel Plate. See revised Detail 1/S-403 included in this amendment.

Question No. 28: Please revise and re-issue Dwg. S-404 so that it shows the location of the PZC Sheet Pile Connector, as well as the bottom elevation and top elevation of the connector, similar to the other three PZC Sheet Pile Connectors shown on Drawings S-400 & S-401.

Response: See revised Drawing S-404 included in this amendment which shows the embedded plate for the slip connection between the tide gate and Sheet Pile.

Question No. 29: The Amendment #1 Answer to Question #21 states that the 18" diameter Pipe Piles under the Pump Station and Tide Gate Structure are open-ended pipe piles. If that is the case, then please add notes to Dwg.

S-105 that specify the minimum depth (vertical height) of low strength concrete fill to be provided in the open-ended pipe piles.

Response: See revised Drawing S-105 included in this amendment which shows the expected depth of low strength concrete.

Question No. 30: The sections on drawing C-301 show the bottom of excavation in the levee area to be -10.0’.

However on sheet S-901 sections A & C both show the elevation in this area to be -9.0’. Please confirm the correct elevation.

Response: The excavation under the new levee is -10.0. See revised Drawing S-901 included in this amendment.

Question No. 31: With regard to the JCP&L Work, Dwg E-101 requires the installation of 4' x 6' Pull Boxes/Manholes, but there are no details provided for this type of Pull Box/Manhole in the JCP&L Spec Section 00 90 01 or on the Electrical drawings. Please provide the missing information as soon as possible.

Response: See revised Drawing E-804 included in this amendment.

Question No. 32: Detail #23 on Dwg. E-803 was revised to show six fixed Bollards to protect the Transformer.

However, Ten Bollards are shown on the JCP&L Typical Transformer Pad Detail provided in Section 00 90 01.

Please clarify the number of fixed Bollards to be provided for the protection of the Transformer Pad.

Response: See revised Drawing E-803 included in this amendment.

Question No. 33: With regard to the Verizon Work, please clarify whether or not the $6,000.00 Fixed Amount for Bid Item #0020 is intended to compensate the Contractor for furnishing and installing the underground Communications Conduit and Communications Pullboxes from the Verizon pole at the street to the Control Building, as shown on Dwg. E-101.

Response: No, Bid Item 0020 does not cover Contractor’s cost for furnishing and installing communications conduit and pullboxes. The “Not to Exceed” amount included in Bid item 0020 covers only payment to Verizon for the work associated with providing and installing the fiber optic cable. Bid item 0013 has been revised to include the cost for furnishing and installation of the conduit and pull boxes.

Question No. 34: With regard to the 14' x 27' Concrete Apron that is shown in plan-view on Dwg. S-100, please provide details for this concrete pad similar to the details provided for the other concrete pads on Dwg. S-505.

Response: See revised drawing S-100 included in this amended.

Question No. 35: For this hoist the spec required: lifting speed =6in/min, worm gearbox, a torque limit coupling between motor and gear box to limited torque less than 1.25 times of the motor rated torque, 5hp motor, capacity is 65464lb. For this given design input, there are some issues below:

1. By the speed and capacity, motor size should be much less then 5hp. If use 5hp motor to select the wire rope, the size should be much bigger and then all component to be a bigger size.

2. There are two efficiency for the worm gear box, the running efficiency and start efficiency. Normally the start efficiency can be overcome by start torque of the motor. But here a torque limit coupling between motor and gearbox and limited the box to limited torque less than 1.25 times of the motor rated torque, even 5hp motor may not enough for overcoming the very low worm gear start efficiency.

Response: See Section 35 01 42, Subsections 1.2.10 Design Procedures and 2.2.3 Design Parameters for guidance in determining the equipment sizes. The above subsections provide important design information/guidance. The design is the responsibility of the contractor and is to be performed by a licensed Professional Engineer. See revised Specification Section 35 01 42 included in this amendment.

Question No. 36: With regard to the concrete work for the Pump Station and Tide Gate Structure please clarify whether or not the USACE will require the implementation of Mass Concrete curing procedures. If so, then please amend the Concrete Specifications to provide specific parameters, and performance requirements that are to be followed for the portions of these structures that may require the use of Mass Concrete procedures.

Response: Specification Section 03 31 00 and 03 39 00 have been revised and are included with this amendment.

For concrete section three feet thick and greater thermometers will be added to monitor the temperature differential in each pour. See attached revised specifications for additional requirements.

Question No. 37: Paragraph 3.1.1.1 of Structural Concrete Specification Section 03 31 00 requires the placement of a 4" thick Mud Mat under concrete structures placed on earth foundations. With regard this requirement, please clarify the following:

a. Is this paragraph intended to apply to the pile-supported foundation slabs for the Pump Station and Tide Gate Structure?

b. If this paragraph was intended to apply to the pile-supported foundation slabs, then we request to have this requirement made optional based upon the Contractor's Dewatering Plan. For example, the Contractor's Dewatering Plan may require a pervious layer of crushed stone underneath the foundation slabs in order to maintain a dry excavation, in which case the use of a Mud Mat would not be applicable. Please clarify.

Response:

a. The 4” Mud Mat will be placed under the Pump Station and Tide Gate Structures.

b. The Contractor may propose an alternative and request a variance on the Mud Mat foundation when submitting the Dewatering Plan for review.

Question No. 38: Please reference specification section 35 41 00 Page 14, Subsection 3.6 Excavation of Unsuitable Foundation Soils in where the third sentence states “Over-excavation shall be performed at the direction and approval of the Contracting Officer.” Please also reference Drawing S000A, Foundation Note 3 which contains similar language. Please confirm the method in which the Contractor will be compensated for this work.

Response: Bid item 0033 for over excavation of unsatisfactory soils has been added to the contract as an Option.

This Option will be exercised if determined necessary by the Contracting Officer.

Question No. 39: Please reference Drawing C-101 that was revised in Amendment 1 in where Mean High Water has been provided. Please provide Mean Low Water.

Response: Mean Low Water (MLW) is approximately -2.55 NAVD 88. Drawing C-101 has been revised in this amendment to include the MLW elevation.

Question No. 40: Please reference Amendment #1, Page 6, Question #14, in where the response confirms that the designated stockpile area depicted on the contract drawings is not large enough for the material that is to be excavated from the temporary diversion channel. However the response also references Note 8 on C102 which states “Excavated unsuitable material” “ must be disposed offsite. Please confirm the USACE response to this questions. Should the contractor dispose the excess excavated temporary diversion channel material and then replace the material. If that is the case please provide requirements of the replacement diversion channel material.

In the alternative is the USACE confirming the material excavated from the diversion is unsuitable to be returned to the diversion channel. Please confirm what the Contractor is expected to do with excavated material from the diversion channel.

Response: Note 8 does not state excavated material must be disposed offsite. Note 8 states: "Excavated unsuitable material to be stockpiled within the designated stockpile area or appropriately disposed offsite." Note 7 above it states: "Excavated material from diversion channel construction may be placed in the stockpile area." Any material excavated from diversion channel or under new levee may be placed in the stockpile area up to the limits stated in Note 8, sheet C-102.

Detail D on C-301, shows that the material used to backfill the diversion channel shall be excavated material or fill material. The top 2’ feet of the diversion channel shall be backfilled with excavated material.

Question No. 41: Please reference Specification Section 01 22 00 revised by Amendment #1, Subsection 1.4.4, Site Work in where the 4th line references “grass seeding” work. Please confirm the location of grass seeding.

Response: See sheet C-801 for locations of seeding and Note 1 on C-801 - All disturbed areas within work limits above EL 5 ft to be seeded.

Question No. 42: Please reference Drawing E202 in where the description of the drawing is “Generator Building Lighting Plan”. However the building that is depicted is the Control Building. Please confirm and revise as necessary.

Response: See revised Drawing E-202 included in this amendment.

Question No. 43: Please reference Drawing C103 and S100 in where a Concrete Apron is depicted. However there are no details for the Apron. Please provide detail for the Concrete Apron.

Response: See revised drawing S-100 included in this amended.

Question No. 44: Please reference Drawing S212 in where details for the “Gate Sill” is depicted. Please also reference Drawing S705 in where the “Seal Plate” is depicted. Please confirm if the details are depicted the same item. IF so please coordinate the proper dimensions of the item (S212=26’-5”, S705=24’-0”) and confirm which detail we are to follow. If these items are different please confirm the installation location of each item.

Response: Drawing S-212 has been revised in this amendment to delete the Gate Seal. The Gate seal is shown in S- 705.

Question No. 45: Please reference Drawing S100 and S311. Drawing S100 references to the openings in the pump station deck concrete as “Hatches”. However S311 depicts steel grating set in embedded angles. Please confirm the method of removal and replacement of the grating and/or if the USACE is seeking to install a hatch. Furthermore please reference an appropriate specification for the Grating/Hatches.

Response: The opening on the pump station deck is a removable grating.

Question No. 46: Please reference Drawing E702 in where the power cable schedule, #101 depicts 3 -4” PVC with 500kcmil and 3- 1/0. Please clarify # of cables in each conduit.

Response: See revised Drawing E-702 included in this amendment.

Question No. 47: Please reference Drawing E-803 in where the detail depicts 4 conduits, 2 for communication and 2 for power. Please also reference Drawing E702 power cable schedule #101 in where 3 -4” PVC conduits are depicted. Please clarify that there are 5 - 4” PVC in the ductbank.

Response: See revised Drawing E-702 included in this amendment.

Question No. 48: Please reference Drawing E702 power cable schedule #102 in where 1 - 1-1/2” with 500 kcmil and 3- 1/0 is depicted. Please clarify # of cables in each conduit and size of conduit.

Response: See revised Drawing E-702 included in this amendment.

Question No. 49: Please reference Drawing E702 power cable schedule #103 shows in where 1 - 1-1/2” with #1 and 1/6 are depicted. Please clarify # of cables in each conduit and size of conduit.

Response: See revised Drawing E-702 included in this amendment.

Question No. 50: Please reference Drawing E101 in where 5 - 4’x6’ pull boxes are depicted. Please also reference Drawing E803 in where the pull box is depicted as 2’x3’. Please confirm the size of the pull box. Furthermore please confirm the material of the pull box. Should the Contractor assume that the pull boxes shown on drawing E803 are Quazite open bottom not rated for traffic?

Response: See revised Drawing E-804 included in this amendment.

Question No. 51: The structural plan views on Dwg. S-301 show Ladder Rungs mounted on the west wall of the Pump Station Discharge Bay. However, these Ladder Rungs do not appear in the elevation view of this same wall on Dwg. S-303. Please clarify whether or not Ladder Rungs are required at the west wall of the Discharge Bay.

Response: Ladder Rungs are required on the west wall of the Discharge Bay. See revised Drawing S-303 included in this amendment.

Question No. 52: Three Pump Casing Openings are called for on Dwg. S-302 & S-304 but the structural drawings do not provide any typical details for the rebar at these openings or if any embedded metals are required for the framing of these Pump Casing Openings. Please provide this missing information.

Response: The Pump Casing Openings and any embedded metals and anchorage will need to be coordinated with pump manufacture.

Question No. 53: There is a significant amount of 4' thick Channel Rip Rap that cannot be placed in-the-dry because it is located beyond the limits of the cofferdam. With regard to this work please clarify the following:

a. The bid documents do not provide specific information on how the Contractor is expected to perform this work, which includes a significant amount of wet excavation, especially in light of the recently issued NJDEP water-work restrictions in Amendment #1. Therefore, please provide a complete set of notes/specifications/restrictions on what is expected of the Contractor when performing this work in-the-wet.

Response: The placement of riprap in the wet is up to the means and methods of the contractor. The contractor shall meet the limits, gradation, and thickness of the riprap as shown on the plans and specs.

b. Please note that the Rip Rap Specification Section 35 31 19 only addresses the placement of Rip Rap in very optimal, dry conditions. Please modify the Rip Rap Specifications to provide specific instructions on the placement of the Channel Rip Rap in wet conditions.

Response: Specification 35 31 19 applies to placement of the Rip Rap in both conditions. The placement of riprap in the wet is up to the means and methods of the contractor. The contractor shall meet the limits, gradation, and thickness of the riprap as shown on the plans and specs.

c. The plan view of this Channel Rip Rap on Dwg. C-105 refers to Section D on Dwg. C-301, and this detail does not show any Bedding Stone or Geotextile under the Channel Rip Rap placed in the Wet. Please clarify whether or not Section D on Dwg C-301 is drawn correctly.

Response: Section D on C-301 has been revised to show 9” Bedding Stone and is included in this amendment.

d. Note #4 on Dwg. C-301 states that the Geotextile and Filter Sand (for the Rip Rap performed in-the-wet) are to be placed during low tide, which implies that performing this work during low tide will allow this work to be performed in-the-dry. However, we believe that the mean low tide elevation is expected to be roughly 11 feet higher than the excavated subgrade for the Channel Rip Rap which is shown on Dwg. C-105 to be Elevation -14.0.

Therefore, performing any of this Channel Rip Rap work during low tide does not allow any of this Channel Rip Rap work to be performed in the dry. Therefore, please address this issue and revise Note #4 accordingly.

Response: Placement of the riprap along the levee may be placed mostly in the dry (during low tide). However within the channel, some of the riprap will be placed in the dry (within the cofferdam) and some in the wet (outside the cofferdam limits). The placement in the wet is not related to the note regarding placement of riprap at low tide.

e. Due to the above issues, we recommend the elimination of the Channel Rip Rap that is currently shown on the drawings to be placed beyond the limits of the cofferdam.

Response: The channel Rip Rap is required and cannot be deleted.

Question No. 54: The spec required the gearbox is a worm gearbox and there are a Torque Limiting Couplings between the gearbox and motor to limit the motor torque less than 1.25 times of the rated full torque. It is not practical as the start efficiency of the worm gear box is very low; it may not start the running as the torque is limited by the Limiting Coupling. I would suggest to use normal gear reducer to replace the worm gear reducer or remove the Torque Limiting Couplings.

Response: Specification Section 35 01 42 has been revised and is included in this amendment.

(End of Summary of Changes)