W912BU-17-B-0013_Specs-AM1.pdf

Offers 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 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 your 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.

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

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

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

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

CHECK ONE 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)

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.

15C. DATE SIGNED

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

16C. DATE SIGNED

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

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

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

NSN 7540-01-152-8070

Previous edition unusable

Maintenance Dredging Wilmington Harbor Christina River, Delaware

THIS AMENDMENT DOES NOT EXTEND THE 15 JUNE 2017 BID OPENING DATE AT 11:00 A.M.

E5CT9RH9

US ARMY ENGINEER DISTRICT, PHILADELPHIA

WANAMAKER BUILDING, 100 PENN SQUARE EAST

PHILADELPHIA, PENNSYLVANIA 19107-3390

US ARMY ENGINEER DISTRICT, PHILADELPHIA

POC: ROBERT HILTON

WANAMAKER BUILDING, 100 PENN SQUARE EAST

PHILADELPHIA, PENNSYLVANIA 19107-3390

9A. AMENDMENT OF SOLICITATION

NO.

W912BU-17-B-0013

06/6/2017

9B. DATED (SEE ITEM 11)

05/15/2017

This page was intentionally left blank for duplex printing.

Amendment No. 0001

IFB W912BU-17-B-0013

14. DESCRIPTION OF AMENDMENT (continued)

a. BIDDING SCHEDULE: Please delete the Bidding Schedule, in its entirety and substitute the revised Bidding Schedule, annotated Amendment No. 0001, attached hereto.

b. TECHNICAL SPECIFICATIONS:

(1) Section 35 20 23 – DREDGING: Please delete pages 35 20 23-11 to 35 20 23-15 in their entirety and substitute the revised pages, annotated Amendment No. 0001, attached hereto.

c. DRAWINGS:

(1) Please delete the following drawing in its entirety and substitute the revised drawing of the same number, with the latest revision date of 24 May 2017, attached hereto.

C-103 C-301 C-302

d. Please indicate receipt of this amendment on Standard Form 1442 (SOLICITATION, OFFER, AND AWARD) as Amendment No. 0001. Failure to acknowledge all amendments may be cause for rejection of the bid.

00 10 00-3

BIDDING SCHEDULE

(To be attached to SF 1442)

Item Estimated Unit Estimated No. Description Quantity Unit Price Amount_____

1. Mobilization & Demobilization 1 JOB L.S. $___________

2. Removal and Satisfactory

Disposal of Material 507,929 CY $_________ $___________

TOTAL ESTIMATED AMOUNT $______________

NOTE: Bidders must bid on all items.

shall be submitted daily to the Contracting Officer.

3.3.2 Timber Flashboards

Provide, prior to commencement of pumping, a sufficient number of flashboards for the sluice, as required, for the retention of dredged material under this contract and shall assure that the entire sluice length is effective. Brush applied preservative treatment shall be available at the site and all cut surfaces shall be heavily brushed.

3.3.3 Continuing Effluent Control

Upon completion and acceptance of a work assignment, provide continuing, intermittent labor to assure that effluent control is continued beyond the completion of dredged discharge into the disposal area. Control, including the removal of flashboards, shall be continued until water impoundment is reduced to that which existed prior to the commencement of disposal into this area. The time required for effluent control beyond completion and acceptance of the work assignment shall not be considered part of the completion time for the contract.

3.4 OVERDEPTH AND SIDE SLOPES

3.4.1 Overdepth

a. Dredging will be required to a depth of 35 feet MLLW (DATUM) plus 1 foot allowable overdepth, limited by a vertical plane through the required depth contour, within the contract work limits from Station 0+000 to Station 1+650.

b. Dredging will be required to a depth of 38 feet MLLW (DATUM) plus 1 foot allowable overdepth, limited by a vertical plane through the required depth contour, within the contract work limits from Station 1+650 to Station 6+236.

3.4.2 Side and End Slopes

No side or end slopes are specified for this contract (box cut).

Computation of payment quantities will be to the specified depth within the channel edges for all areas requiring dredging, with the following exceptions: Dredging will be required to a distance of 25 feet outside the North Channel edge, north turning basin edges, and entrance widening (flare), when required dredging depths exist inside the channel and basin, along the perimeter of the north edge.

3.4.3 Excessive Dredging

Material taken from beyond the limits specified in the Paragraphs entitled:

"Overdepth" and "Side and End Slopes" will be deducted from the total amount dredged as excessive dredging, for which payment will not be made.

Nothing herein shall be construed to prevent payment for the removal of shoals performed in accordance with the applicable provisions of the Special Clauses entitled: "FINAL EXAMINATION AND ACCEPTANCE" and "SHOALING".

3.5 ESTIMATED QUANTITIES

The total estimated quantity of material necessary to be removed within the specified limits as shown on the Contract Drawings, including allowable

Section 35 20 23 Page 11 overdepth, areas outside the channel and turning basin limits as previously specified, and anticipated shoaling, is as follows:

ACCEPTANCE

SECTION

STATION TO

STATION

TO PROJECT

DEPTH

35' MLLW (CY)

ALLOWABLE

OVERDEPTH TO

36' MLLW (CY)

TOTALS

AS-1 0+000 to 1+650 65,782 23,918 89,700

ACCEPTANCE

SECTION

STATION TO

STATION

TO PROJECT

DEPTH

38' MLLW (CY)

ALLOWABLE

OVERDEPTH TO

39' MLLW (CY)

TOTALS

AS-2 1+650 to 3+600 199,718 42,797 242,515

AS-3 3+600 to 4+600 13,554 12,104 25,658

AS-4 4+600 to 6+236 8,375 8,198 16,573

SURVEY TOTALS 287,429 87,017 374,446

ESTIMATED SHOALING 115,500 17,983 133,483

TOTAL REQUIRED 402,929 105,000 507,929

TOTAL ESTIMATED BID QUANTITY 507,929

3.6 LIMIT OF DREDGING

3.6.1 General

The area to be dredged is within the limits indicated on the Contract Drawings and specified in the Special Clause entitled: "FINAL EXAMINATION AND ACCEPTANCE", as defined by dredging prism indicated in the Paragraphs entitled: "OVERDEPTH AND SIDE SLOPES" and "MEASUREMENT AND PAYMENT", of this section.

3.6.2 Quantity Acceptance

Complete all dredging requirements for each acceptance section prior to its acceptance by the Government. In any portion of an acceptance section, when the before dredging survey indicates dredging is required, remove material found to be remaining above the required depth by the after dredging survey, by dredging, unless such dredging is waived by the Contracting Officer. Dragging of a bar or other device will not be allowed. All material removed from within the dredging prism, whether accomplished by initial dredging or redredging, will be paid for at the contract unit price and as determined by the quantity calculation resulting from the difference between the before dredging survey and the final after dredging survey. In any portion of an acceptance section, when the after dredging survey indicates dredging is required that was not indicated by the before dredging survey, remove such material to the required depth, unless waived by the Contracting Officer. Such work will be paid for at the contract unit price and an additional quantity calculation will be made based on the after dredging survey, provided that the material is not determined by the Contracting Officer to be misplaced material.

Section 35 20 23 Page 12

3.7 CONTRACTOR QUALITY CONTROL

Prepare and maintain Daily Report of Operations forms, as specified in Paragraph "SUBMITTALS", and shall furnish signed copies thereof with the Quality Control Reports required in SECTION 01 45 00 QUALITY CONTROL, to the Contracting Officer.

3.8 MEASUREMENT AND PAYMENT

3.8.1 Mobilization and Demobilization

All costs connected with the mobilization and demobilization of all of the Contractor's dredging plant and equipment will be paid for at the contract lump sum price for this item. Sixty percent (60%) of the lump sum price will be paid to the Contractor upon completion of his mobilization at the first work assignment area. The remaining forty percent (40%) will be included in the final payment for work under this contract.

In the event the Contracting Officer considers that the amount in this item (60%) which represents mobilization, does not bear a reasonable relation to the cost of the work in this contract, the Contracting Officer may require the Contractor to produce cost data to justify this portion of the bid.

Failure to justify such price to the satisfaction of the Contracting Officer, will result in payment of actual mobilization costs, as determined by the Contracting Officer at the completion of mobilization, and payment of the remainder of this item in the final payment under this contract.

The determination of the Contracting Officer is not subject to appeal.

All costs connected with the mobilization and demobilization of the Contractor's dredging plant and equipment as defined below shall be included in the contract lump sum price for Bid Item No. 1, "Mobilization and Demobilization" as listed in the Bidding Schedule.

a. Mobilization shall include all costs for operations accomplished prior to commencement of actual dredging operations; i.e., transfer of dredge, attendant plant, and equipment to site; initial installation of pipe;

preparation of disposal area, including sluices and drainage structures;

and other incidentals in advance of the actual dredging operations.

b. Demobilization shall include general preparation for transfer of plant to its home or standby base, removal of pipelines, cleanup of disposal areas, and transfer of plant to its home or standby base.

3.8.2 Disposal Area Costs

All costs in connection with the development, maintenance and cleanup of the disposal area, including plastic sheeting, the sluice and drainage structures, shall be included in the contract lump sum price for Bid Item No. 1 "Mobilization and Demobilization", as listed in the Bidding Schedule.

Maintenance of the disposal area, and effluent control shall be included in the contract unit price for Bid Item No. 2, "Removal and Satisfactory Disposal of Material".

3.8.3 Dredging

The total amount of material removed and to be paid for under the contract, will be measured by the cubic yard in place. Measurement of the number of cubic yards in place will be made by computing the volume between the

Section 35 20 23 Page 13 bottom surface shown by soundings of the last survey made before dredging and the bottom surface shown by the soundings of surveys made as soon as practicable after the work specified in each acceptance section has been completed. The volume for measurement will include the material within the limits described in the Paragraph entitled: "OVERDEPTH AND SIDE SLOPES", less deductions that may be required for misplaced material described in the Paragraph entitled: "DISPOSAL OF EXCAVATED MATERIAL", of this section.

The volume of material removed will be generated by using either the Average End Area Method or by the TIN (Triangulalated Irregular Network) computation, as outlined in the Hydrographic Surveying Manual EM 1110-2-1003.

All depths obtained from single beam surveys will be utilized for volume computation purposes. If multi-beam survey methodology is used, a 5-foot by 5-foot matrix using the average of the soundings will be generated from the edited multi-beam data to perform the TIN volume computations. The corresponding plotted soundings and contours will be generated using a cell size for their matrix that is plot-scale dependent utilizing the average of the soundings shifted to the center of the cell from the edited multi-beam data. The subsequent contour generated for the plotted soundings sheet is not to be used for either the calculation of square footage or volumes. If the material to be dredged in the contract is categorized to be hard bottom the matrix used for the volume computations will be reduced to 3 foot by 3 foot and an average of the soundings in the cell will be used. All raw survey data and data used for volume computations will be available to the Contractor upon request. Payment for dredging will be made at the contract unit price for Bid Item No. 2, "Removal & Satisfactory Disposal of Material", as listed in the Bidding Schedule.

3.8.3.1 Surveys for Acceptance

The Government will perform pre and post dredging surveys for each acceptance section. Notify the Government of the need for acceptance surveys at least three days in advance of the date for each survey (Saturdays, Sundays and holidays are excluded), and confirm the need by telephone between 0630 and 0700 hours on the day of each survey by calling the Technical Support Branch, O & M Contracts Section at 215-656-6750, and by email to both George.F.Griffith@usace.army.mil and Stephen.A.Farrell@usace.army.mil. The time for redredging to remove shoals and for second and subsequent surveys in acceptance sections is the responsibility of the Contractor, and must be accomplished within the completion period established for the contract. The Contractor may accompany the survey party to observe if redredging is required. The Contracting Officer will notify the Contractor if redredging is required.

3.8.3.2 Existing Conditions

The drawings as listed under the Special Clause entitled: "CONTRACT DRAWINGS, MAPS AND SPECIFICATIONS" are believed to accurately represent conditions existing at the time indicated but will be updated as required by soundings taken, by the Government, before dredging. Determination of quantities removed and the deductions made therefrom to determine quantities by place measurement to be paid in the area specified, after having once been made, will not be reopened, except on evidence of collusion, fraud, or obvious error. The hydrographic surveys for this contract containing all edited x,y,z data will be available on CD by request.

3.8.3.3 Hydrographic Survey Equipment

Hydrographic surveys will be conducted to meet USACE Performance Standards

Section 35 20 23 Page 14 as defined in EM 1110-2-1003. Surveys will be performed by single transducer sounding techniques, multi-beam sweep type surveys or both.

When using single beam technology, the operating frequency will range from 190 to 210 kHz in hard bottom areas. When utilizing multi-beam technology, the operating frequency will range from 180 to 250 kHz. All fathometers will be calibrated following procedures outlined in the aforementioned EM.

3.8.3.4 Tide Corrections - Government Surveys

Horizontal and vertical vessel positioning for all hydrographic surveys conducted under this contract by the Government, will be based upon Real Time Kinematic (RTK) Global Positioning System, a Real Time Network (RTN), or Post Processed Kinematic (PPK) techniques. All soundings will be corrected to Mean Lower Low Water (MLLW) based upon differences shown in the chart on the drawings.

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Section 35 20 23 Page 15