W912DS-13-B-0029_Amendment_No._5.pdf

W16ROE31764142

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) Issue a revised bid schedule

2) Answ er questions from prospective offerors. For Informational purposes only.

3) Issue Plans, Environmental Data and Underground Storage Tank Closure/Site Investigation Report

4) Issue Specif ications

The bid due date is now 26 November 2013 at 3:00PM EST.

NOTE: Bidders must acknow ledge receipt of this amendment by the date specif ied in the bid (or as amended) by one of the follow ing methods: In the space provided on the SF 1442, by separate letter, or 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).

1. CONTRACT ID CODE PAGE OF PAGES

J 1 10

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

16C. DATE SIGNED

BY 19-Nov-2013

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-13-B-0029

X 9B. DATED (SEE ITEM 11)

02-Oct-2013

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

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

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

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

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

CONTRACT ORDER NO. IN ITEM 10A.

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

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

D. OTHER (Specify type of modification and authority)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

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

6. ISSUED BY

3. EFFECTIVE DATE

19-Nov-2013

CODE

US ENGINEER DISTRICT, NEW YORK

US ARMY CORPS OF ENG, NYD

NEW YORK NY 10278

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

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912DS-13-B-0029

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

AMENDMENT NO. 0005

Revised Bid Schedule

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0001 1 Job Mobilization and Demobilization

FFP

FOB: Destination

MILSTRIP: W16ROE31764142

PURCHASE REQUEST NUMBER: W16ROE31764142

NET AMT

0002 1 Job All work for the bulkhead repair

FFP

as indicated on the drawings and in the specifications FOB: Destination

PURCHASE REQUEST NUMBER: W16ROE31764142

0003 150 Cubic

Yard

OPTION Additional Excavation and Disposal of

FFP

contaminated soil

0004 150 Cubic

Yard

OPTION Additional Structural Fill

FFP

TOTAL FOR BASE CLINS 0001 – 0002 $___________________

TOTAL FOR OPTIONAL CLINS 0003 – 0004 $___________________

TOTAL FOR ALL CLINS 0001 – 0004 $___________________

NOTE 1: Bidders must bid on all items. Failure to bid on the basic and all options will be cause for rejection of the bid as non-responsive.

NOTE 2: Award of contract will be based on the responsible and responsive bidder with the lowest total price for all base bid plus option items.

NOTE 3: In the event that contaminated soils are encountered during the performance of the construction work, the Contractor shall notify the Contracting Officer Representative (COR). Upon approval by the COR; Options may be exercised within 90 calendar days from receipt of the Notice to Proceed (NTP).

Questions from prospective offerors

Q1. Based upon what we can ascertain from the plans, we are unsure as to the exact scope of the proposed work. Our concern is that this confusion may be shared by other bidders which may lead to Contractors bidding on differing work scopes which would be unfair to all parties.

Sheet C-101 shows the approximate ‘compressed materials line’ which depicts the damaged bulkhead area. Given that the entire bulkhead within this span of approximately 36’ has been damaged or otherwise structurally compromised, for estimating purposes our assumption is all of the structural members within this region must be demolished and replaced. These elements include (but are not limited

to) the following:

a. Existing precast concrete panels. ANS: Yes, demolish and replace.

b. Existing cast-in-place pile cap. ANS: Yes, demolish and replace.

c. Existing steel sheet piling. ANS: Yes, as damaged, after discussion. Demolish and replace.

d. Existing concrete in-fill between the steel sheet piling and precast panels. ANS:

Yes, demolish and replace.

e. Existing Fender piles as indicated on the plans. ANS: Yes, demolish and replace.

f. Existing timber chocks as indicated on the plans. ANS: Yes, demolish and replace.

g. Replacement of existing electrical materials limited to that shown on Sheet E-501.

ANS: Yes, demolish and replace

h. Removal/Replacement of existing bollard. ANS: Reuse Existing

Given the above, we ask that you confirm the above-listed work scope or provide to all bidding Contractors a detailed listing of the work to be accomplished.

A1. The plans provided in the solicitation are the most complete documentation available. Together with the site visit and attached documentation the bidders have as complete a knowledge of the site as the Corps.

Q2. We cannot ascertain graphically from the plans exactly how many new 4’ wide precast panels are required If the work zone is 36’ long as shown on the ELEVATION on Sheet S-001, then 9 precast panels are required. Please confirm.

A2. The Corps estimates that 7 concrete panels will require replacement and Contractors should bid as such. Material amounts will only be finalized when the work site is cleared and inspected.

Q3. The Notes on Sheet S-100 clearly state the performance properties of the new tie rods (if required). However the existing tie rod diameter is not stated anywhere on the plans or in the specifications. Please provide this information.

A3. The tie rods are indicated as 2 3/8 inch diameter.

Q4 Concerning the above question, should certain tie rods need replacement, would the Contractor be reimbursed for this work as ‘additional work’ or should all bidding Contractors include this cost in their bid price? If this work is to be included in the bid price, how many tie rods should be included?

A4. The price of five (5) tie rods is to be included in the bid. Their length extends back to the turnbuckle.

Q5. Sheet S-001, Note 10 discusses the possible need for new sheet piling. If the Contracting Officer determines that new sheet piles are needed, would the Contractor furnish and install such piles as ‘additional work’ or should all bidding Contractors include this cost in their bid price? If this work is to be included in the bid price, how many, and what type of sheet piles should be included? Would they be coated and if so, to what extents. If these sheet piles are to be included under the bid price, please issue a specification describing these materials and the work requirements necessary for their installation.

A5. Do not include the price of sheet pile in the bid. When it is determined how much sheet pile might be necessary after opening the site the Corps and Contractor will negotiate a price for this additional work.

Q6. The plans call for the removal of the precast panels as well as the concrete in-fill throughout the contract limits. Please confirm that the existing precast panels, the concrete in-fill, and the existing steel sheet piles act as a system and are all fully attached and tied together by reinforced concrete, protruding reinforcement, shear studs and other means of mechanical locking that was cast into the concrete in-fill, thus necessitating that these elements be removed in their entirety throughout the extent of the 36’ contract limits.

A6. The concrete panels, sheet pile and concrete infill are designed to be fully attached and act as a system. The collision has compromised the system but all securing elements in the concrete in-fill need to be removed.

Q7. Sheet S-100, Section A-A required the Contractor to verify that the stiffener and closure plates are still in place at mud line elevation. Should the existing mud line be higher that shown on the plans, must the Contractor jet or dredge the obstructing soil from the bottom of the bulkhead along the entire 36’ span? If so, is such dredging/jetting permitted by the D.E.P.?

A7. The contractor needs to confirm by inspection that the stiffener/closure plates are intact to complete the structural system. Dredging for such an inspection/repair, if necessary is permitted by the DEP under USACE Nation-wide Permit 3 allowing the repair/rehabilitation of existing structures.

Q8. The documents state that no stockpiling of excavated materials is allowed. If it is the intent that the excavated soils be removed from the site immediately after excavation, it must be noted that D.E.P. that prohibits the transport and removal of saturated soils until they are drained to an acceptable moisture content. Given the above, will an area be allotted where these saturated spoils can be stockpiled and drained prior to transport?

A8. A length of the bulkhead immediately adjacent to the repair site will be provided for the placement of a dewatering barge if necessary. No land based stockpiling of material for dewatering will be allowed.

Q9. It appears that the material to be excavated is contaminated, given the extent of runoff and turbidity precautions shown on the plans. Please provide all available soil testing reports so that we can price the transport and legal disposition of this material. Please inform all bidding Contractors as to whether this material is classified as ‘contaminated’ or ‘hazardous’ and if manifested transport and disposal is required.

A9. A boat fueling station with associated piping was located above ground, immediately behind the damaged bulkhead. Diesel fuel was provided most recently. Please find attached the Tank Closure Report. The bid schedule has also been modified to include two new Options for the disposal of 150 CY of material and to provide replacement backfill.

Q10. Given that new fender piles and possibly new sheet piling will be required, we ask that all available local soil boring information be made available to all bidding Contractors.

A10. Soil boring information with geotechnical data is included in the attached Tank Closure Report.

Q11. Sheet E-501 shows (in general) the electrical work to be accomplished.

However, no details of this work are offered on the plans or in the specifications.

The necessary information would include, but not be limited to;

i. Sizes, number and lengths of new conduit

j. Conduit materials.

k. Sizes and types of conductors required.

l. Details of cabinet supports required.

m. In absence of the above information, we ask that a formal electrical specification detailing the work to be performed and the materials to be provided be issued to all bidding Contractors

A11. No drawings of the pre-collision electrical installation exist. No further specification for the electrical work will be issued. Take-offs of the size, number and length of required material will need to be estimated from the provided plans or as observed during the site visit.

Q12. Given the above, we ask the bid date be extended for two additional weeks to on or about November 15, 2013.

A12. The new bid due date is now 26 November 2013 at 3:00PM EST.

Q13. Sheet S-001, Section A-A shows ¾” dia. shear studs welded to the existing sheet piling at 12” on-center. The annotation under Section B-B of that same sheet states “3/4” dia. X 3” headed steel stud (typ.), Field Verify”. ANS:

We are unable to field verify.

It seems that the designer’s intend is that the concrete in-fill be removed and the concrete around each of these studs be hand chipped so as to not damage the existing shear studs. In actuality, this cannot happen for the following reasons;

The existing sheet piles/concrete in-fill/precast panels are tied together and act as a single system. Therefore, given the amount of connected concrete, the removal of the vast majority of the precast panels/concrete in-fill must be done by machine and the ability to protect the existing shear studs is near impossible. Even working as gingerly as possible most, if not all of these studs will be damaged and will require replacement. Further complicating this issue is that the majority of the replacement studs are located below low mean water. Therefore, those studs cannot be replaced using conventional stud welding equipment and must be installed by divers using underwater welding equipment. Alternatively, the cofferdam area must be completely de-watered for this work. Either way, this is a very expensive operation.

Given the above, we ask that the Designer re-examine the necessity of replacing the existing damaged shear studs and/or devise another way of attaching the sheet piles to the new infill, such as the installation of through-studs in the face of the sheet pile wall.

A13. The specification as issued does call for the replacement of the existing shear studs, because their damage during the concrete removal process is envisioned. They could be replaced by through-studs or expanding studs as welding could be very difficult especially underwater.

Q14. During the site visit, Contractors were informed that disposal quantity of diesel- contaminated soil would be approx. 250 cubic yards. Based upon the Section shown on the lower part of Sheet C0501, we arrive at a far lesser disposal quantity, based upon disposing the soil along a 32' length of bulkhead. Please confirm the 250 cubic yard quantity.

A14. The possible quantity available for disposal if contaminated is revised downward to 150 CY.

Q15. The intent of the plans is that the Contractor remove the existing precast concrete planks and the reinforced concrete in-fill that was poured against and attached to the existing sheet piles. Furthermore, the plans assert that the sheet piles and the tie rod system will stay in place unless is determined that these elements are damaged after thorough inspection.

The removal of the concrete is a very arduous and difficult task that would most likely have to be accomplished using heavy machine-mounted breakers and by use of manual breakers operated by laborers above water and by divers below water. It is also inevitable that, subject to the level of concrete removal required by the Corps, damage will be inflicted upon the sheet piling. Given the conditions under which this work must be accomplished, a certain amount of damage is unavoidable and must be anticipated. Given the above we ask the following;

a. Assuming that the steel sheeting is left in-place, please clearly define the level of concrete removal that is required. A N S : The specification states that concrete be removed to the face of the sheet pile. It is not anticipated that the sheet pile damage extends to the mud line. Only those areas of sheet piling that are visibly buckled need to be replaced and have concrete removed from the facewith shear studs exposed and cleaned or replaced. Cracked precast slabs need to be removed completely and replaced.

b. Can a layer of concrete that is well-adhered to the sheet piling remain in place as long as the shear studs are uncovered and cleaned? ANS: No, the shear bolt is meant to adhere new concrete to the sheet wall system. The concrete should be removed and re-poured.

c. Given that the existing sheet piling will remain and that it will be encased in new concrete, will minor damage to the sheeting that may occur during the breaking operation (short of punch-through) be tolerated?

ANS: Minor damage will be tolerated. Damage to cause separation of the sheet piles must be avoided.

d. It is impossible to know the current condition of the existing sheet piling especially at and immediately below the mean low water level where most cathodic loss occurs. It is probable that significant section loss of the sheeting exists in this zone. In the event that the sheeting is punched-through or otherwise damaged during the concrete break-out process, would it be the Contractor's responsibility to repair such damage to the sheeting?

A15. Yes, to create a structurally functioning system, if damage occurred during the breakout, then repair of the newly damaged sheeting would be necessary by the contractor.

Q16. As an extension of Question 1 above, given the typical condition of and substantial section loss typically exhibited by most older sheet pile bulkhead walls at and around the low water mark, welding would not seem like a viable repair, particularly if it is required.

A16. Welded fills would be acceptable for isolated section loss no greater than 2” diameter. Larger sections would have to be replaced with intact sheet pile. Bolted stud/plate repair would be acceptable on a per case basis

Q17. Please confirm that the soil to be excavated is assumed to be diesel-contaminated and that it must be drained to an acceptable water content and removed from the site in its entirety. Further confirm that such draining cannot be performed by stockpiling/draining on the pier.

A17. Soil cannot be stockpiled/drained on-site. See A8. Diesel contamination cannot be ruled out however the UST closure report states the majority of such soil is previously excavated.

Q18. Please confirm that any and all water removed from the contaminated soil prior to the soils transport must be treated as a contaminated liquid. Therefore this water must be collected, transported, legally disposed of at a licensed receptor facility and manifested as if it is contaminated with diesel oil.

A18. Liquid drained from contaminated soil should be assumed to be contaminated. Contractor conducted testing would be necessary to enable disposal otherwise.

Q19. It was asserted during the site visit that the embedment depth of the existing steel sheeting is only 6 (six) feet below the mud line. We find that hard to believe, as the burdened wall height above the mud line is almost 20'. Given the development depth of the reactive soil pressure below the mud line, the height of the active pressure against the wall is well in excess of 20'. Our concern is that should this toe depth be only 6', there is more than a distinct possibility of toe failure when we excavate below the existing mud line elevation (as required by the plans, Sheet S-001, Sections A-A and D-D) and also possible when we perform the minor excavation that will be required to remove the concrete demolition debris that must fall to and below the existing mud line. Till is also a significant safety concern! as divers will be spending a substantial amount of time at and around the mud line during the course of the work.

a. Please verify the stated 6' toe depth.

b. If the 6' embedment is correct, please inform us as to how the Contractor will be protected against and compensated for damages resulting from a possible toe failure.

A19. By the historical plans included in the accompanying amendment, the sheet pile should be assumed to be a full 40 feet, with 10 feet above the mudline and 30 feet below, therefore the toeline is possibly -30 feet. Because of the deep burial depth, toe failure should not be assumed.

Q20. How can we see the pictures and report referenced in the general notes on sheet S- 001 of the contract documents?

A20. See attached Trip Report

Q21. Are performance/payment bonds or maintenance bonds required?

A21. Performance and payment bonds are required. See SF 1442 Block 12.

Maintenance bonds are not required.

SECTION 00010 - SOLICITATION CONTRACT FORM

The required response date/time has changed from 20-Nov-2013 03:00 PM to 26-Nov-

2013 03:00 PM.

SECTION 00700 - CONTRACT CLAUSES

The following have been added by reference:

52.217-5 Evaluation Of Options JUL 1990

(End of Summary of Changes)