W912BU22B0005_SPECS-AM0001.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 provide USACE responses to Request for Information (RFI). Additional changes include the follow ing:

- Specif ications, Bid Schedule

- Clauses 52.211-10, 52.217-7, 52.217-9.

- Bid Opening is is changed From: 11:00 AM 19 April 2022 To: 11:00 AM, 04 May 2022.

Please indicate receipt of this amendment on Standard Form 1442 (SOLICITATION, OFFER, AND AWARD) as Amendment 0001. Failure to acknow ledge all amendments may be cause for rejection of the offers.

1. CONTRACT ID CODE PAGE OF PAGES

1 3

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

16C. DATE SIGNED

BY

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 W912BU22B0005

X 9B. DATED (SEE ITEM 11)

17-Mar-2022

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer 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

08-Apr-2022

CODE

US ARMY ENGINEER DISTRICT, PHILADELPHIA

POC: SUSAN LI WANAMAKER BUILDING 100 PENN SQU

PHILADELPHIA PA 19107-3390

W912BU 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912BU22B0005

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

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

The following have been modified:

INFORMATIONAL

Only a warranted Contracting Officer (either a Procuring Contracting Officer (PCO) or an Administrative Contracting Officer (ACO)), acting within their appointed limits, has the authority to issue modifications or otherwise change the terms and conditions of this contract. If an individual other than the Contracting Officer attempts to make changes to the terms and conditions of this contract, you shall not proceed with the change and shall immediately notify the Contracting Officer. Proceeding with any work not authorized by the Contracting Officer will be at the Contractor's own risk.

SECTION 00 10 00 - SOLICITATION

The required response date/time has changed from 19-Apr-2022 11:00 AM to 04-May-2022 11:00 AM.

The contractor period of performance end date has increased by 60 days from 120 days to 180 days.

SECTION 00 21 13 - INSTRUCTIONS TO BIDDERS

The following have been deleted:

INFORMATIONAL TEXT

SECTION 00 70 00 - CONDITIONS OF THE CONTRACT

The following have been modified:

52.211-10 COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK (APR 1984)

The Contractor shall be required to (a) commence work under this contract within Ten (10) calendar days after the date the Contractor receives the notice to proceed, (b) prosecute the work diligently, and (c) complete the entire work ready for use not later than 180 Calendar days after receiving Notice to Proceed . * The time stated for completion shall include final cleanup of the premises.

*The Contracting Officer shall specify either a number of days after the date the contractor receives the notice to proceed, or a calendar date.

(End of clause)

52.217-7 OPTION FOR INCREASED QUANTITY--SEPARATELY PRICED LINE ITEM (MAR 1989)

The Government may require the delivery of the numbered line item, identified in the Schedule as an option item, in

W912BU22B0005

the quantity and at the price stated in the Schedule. The Contracting Officer may exercise the option by written notice to the Contractor within 60 calendar days of NTP (Period of Performance for Option 1 is 30 calendar days).

Delivery of added items shall continue at the same rate that like items are called for under the contract, unless the parties otherwise agree.

52.217-9 OPTION TO EXTEND THE TERM OF THE CONTRACT (MAR 2000)

(a) The Government may extend the term of this contract by written notice to the Contractor within 5 calendar days; provided that the Government gives the Contractor a preliminary written notice of its intent to extend at least 60 calendar days of NTP. The preliminary notice does not commit the Government to an extension.

(b) If the Government exercises this option, the extended contract shall be considered to include this option clause.

(c) The total duration of this contract, including the exercise of any options under this clause, shall not exceed 210 calendar days if Option 1 is exercised (Period of performance for Option 1 is 30 calendar days).

(End of Summary of Changes)

This page was intentionally left blank for duplex printing.

Amendment No. 0001

IFB W912BU22B0005

14. DESCRIPTION OF AMENDMENT (continued)

a. REQUESTS FOR INFORMATION (RFI) WITH RESPONSES: RFI’s with responses, annotated Amendment No. 0001, are attached to this amendment.

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

c. TECHNICAL SPECIFICATIONS:

(1) PROJECT TABLE OF CONTENTS: Please delete the Project Table of Contents in its entirety and substitute the revised Project Table of Contents, annotated as Amendment No. 0001, attached hereto.

(2) Section 01 33 00 – SUBMITTAL REQUIREMENTS: Please delete page 01 33 00-19 in its entirety and substitute the revised page 01 33 00-19, annotated as Amendment No. 0001, attached hereto.

(3) Section 35 20 23 – DREDGING: Please delete this section in its entirety and substitute the revised Section 35 20 23, annotated as Amendment No. 0001, attached hereto.

(4) Section 35 20 23.13 - NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SCOW – MONITORING PROFILE: Please add this section in its entirety, annotated as Amendment No. 0001, attached hereto.

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.

RFI# Request for Information Response

Could the government please provide further detail on the geotechnical specifications for the contract shoals A.S. 2 through A.S. 7 (Newbold Range through Roebling Range). The specifications provide data for Fairless Turning Basin but, not the other dredging areas. Any boring data, material characteristics, pictures or other data you could provide would be helpful.

Sediment Core Logs 3, 4 & 5 and associated pictures included in Appendix B41 of the Specifications are in the Delaware River representative of the areas referenced.

Due to the distance from the dredge areas to the Biles Island disposal area, will the Corps consider allowing the Contractor to excavate the material by mechanical or bucket dredging to overflow only, and directly pump the material from the scow into the disposal area?

Mechanical/Bucket dredging will be permitted, please see updated specifications in Amendment 0001.

Because there is no outlet structure at the Biles Island disposal area, will the Contractor be allowed to dewater the disposal area if necessary? Dewatering will not be necessary.

Contract Drawing C-104 shows the discharge line access limit to the Biles Island disposal area. However, there is no indication on where the location of the weirs or outfalls for the return water to the Delaware River. Please provide a drawing showing these locations.

Please see Specification Section 35 20 23, Paragraph titled "Disposal Area" subparagraph e, in Amendment 0001.

Will the Government allow a different discharge line access limit location into Biles Island, possibility on the river end of the area? Discharge Limits are as shown.

Will there be a requirement for “clearing and grubbing” to clear the discharge line access limits or is there an existing cleared route? If needed, how will it be paid for? Please clarify.

Please see Specification Section 35 20 23, Paragraph titled "Disposal Area Costs", in Amendment 0001.

Section 35 20 23 Page 3 indicates that the use of Mechanical or bucket dredging is not permitted. Will the Government consider allowing the use of Mechanical or Bucket Dredge for this contract?

Mechanical/Bucket dredging will be permitted, please see updated specifications in Amendment 0001.

8 Please provide borings and all other soils information for the dredging areas. Please see Appendices B40 and B41 in Amendment 0001.

If debris material is significant in the area, will there be a change order and cost change due to differing site conditions? If not, please quantify the amount of debris to be encountered. Will the Government please add a debris CLIN bid item

Please see Specification Section 35 20 23 and revised Bidding Schedule in Amendment 0001.

Section 52.211-10 indicates that the Contractor shall be required to commence work within ten (10) calendar days of the NTP. Please clarify or define the word “work”.

Work is any activity performed in connection with the Contract.

Specs indicates that the dredging window starts on July 1. What are the restrictions for this window? Will the Government allow mobilization prior to July 1? Please clarify. Window is strictly for dredging.

12 Please confirm no disposal fees are required at Biles Island There are no fees associated with the use of Biles Island.

REQUESTS FOR INFORMATION with RESPONSES Solicitation No. W912BU22B0005

Requests for Information Page 1

RFI# Request for Information Response

Section 00 70 00, 52.217-7, Page 40 of 82, Paragraph 52.217-7, indicated that, “The Contracting Officer may exercise the option by written notice to the Contractor within 120 days.” With the location, magnitude and estimated quantities for dredging of the total base work, there is a possibility that dredging could be short in duration. It will be economically and commercially at the Government’s and Contractor’s best interest to dredge the Option item concurrent with the base work rather than wait for 120 days to award it.

Therefore, may we request that the exercise to award the Option Item be simultaneous with the award of the Base work or within fifteen (15) calendar days of the receipt of the Notice to Proceed. Please see revised Clauses in Amendment 0001.

Requests for Information Page 1

00 10 00-3

BIDDING SCHEDULE

(To be attached to SF 1442)

Item Estimated Unit Estimated No. Description Quantity Unit Price Amount______

BASE BID:

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

2. Removal and Satisfactory Disposal of Material 420,000 CY $_______ $___________

3. Debris Removal 100 TON $_______ $___________

TOTAL ESTIMATED BASE BID AMOUNT $_______________

OPTION WORK:

Option 1:

4. Removal and Satisfactory Disposal of Material 65,500 CY $_______ $___________

5. Debris Removal 20 TON $_______ $___________

TOTAL ESTIMATED OPTION 1 AMOUNT $_______________

TOTAL ESTIMATED BASE BID AND ALL OPTIONS AMOUNT $_______________

NOTE: Bidders must bid on all items.

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 30 00 ADMINISTRATIVE REQUIREMENTS

01 33 00 SUBMITTAL PROCEDURES

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 35 50 DIVING SERVICES

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 00 QUALITY CONTROL

01 45 05 RESIDENT MANAGEMENT SYSTEM CONTRACTOR MODE (RMS CM)

01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 20 23 DREDGING

35 20 23.13 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM SCOW -

MONITORING PROFILE

35 20 23.33 NATIONAL DREDGING QUALITY MANAGEMENT PROGRAM PIPELINE

HYDRAULIC DREDGE

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 1

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Amendment No. 0001

Section 01 33 00 Page 19

SECTION 35 20 23

DREDGING

PART 1 GENERAL

1.1 WORK COVERED BY CONTRACT PRICE

The contract price per cubic yard for dredging shall include the cost of removal and disposal of all materials as specified herein or indicated on the drawings, with the exception of ledge rock, large boulders, rock fragments, wrecks, snags, stumps, and piles which cannot be removed or buried below project depth without blasting. Should ledge rock or other material which cannot be removed without blasting be encountered, the Contractor shall remove therefrom all overlying material which in the judgment of the Contracting Officer can be removed. Nothing in this paragraph shall be construed as prohibiting the removal of excepted material by special means at prices agreed upon and approved in accordance with the FAR 52.236-2 entitled: "DIFFERING SITE CONDITIONS".

1.2 REFERENCES

The publications listed below form a part of these specifications to the extent referenced. The publications are referred to in the text by their basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D1556/D1556M (2015; E 2016) Standard Test Method for Density and Unit Weight of Soil in Place by Sand-Cone Method

PENNSYLVANIA DEPARTMENT OF TRANSPORTATION (PennDOT)

Publication 408 (2020) Publication 408 Specifications

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

EM 1110-2-1003 (2013) Hydrographic Surveying Manual

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

33 CFR 156 (2010) Oil and Hazardous Material Transfer Operations

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

NOTE: Any submittals classified as "SD-01 Preconstruction Submittals" are

Section 35 20 23 Page 1 submittals required to be submitted to, and approved by, the office indicated prior to mobilization to the contract work site. All other submittals, classified as "SD-02" through "SD-11," shall be submitted to, and approved or reviewed by, the office indicated prior to commencing the particular task to which the submittal is associated.

SD-01 Preconstruction Submittals

Disposal Area Plan; G,COR

Submit at or before the pre-dredging coordination meeting, a plan for usage or modification of the disposal area. This plan shall show the areas or portions thereof to be used and the manner in which the dredged material will be distributed in the disposal area.

Fall Protection Inspection Report; G,COR

Discharge Pipe Support; G,COR

Submit a description of the proposed method for supporting the discharge pipe inside the disposal area as required by these specifications, to include sketches showing plan and elevation views and details for the proposed method, and data on the materials to be used.

Vessel and Equipment List; G,COR

Submit a complete list of all vessels and equipment to be used during the contract, including all dredging plants, supporting vessels, and equipment. Include on the list, the types, the numbers of each, the draft of each, and all other pertinent information. List the survey vessel, survey crew, type of survey equipment, and software that may be used.

SD-06 Test Reports

Daily Report of Operations; G,COR

Prepare, maintain, and submit daily, the Daily Report of Operations forms, and furnish signed copies thereof with the Quality Control Reports required in Section 01 45 00 QUALITY CONTROL. A sample Daily Report of Operations form is attached at the end of this Section. Further instructions on the preparation and submittal of this form will be provided at the Pre-Dredging Coordination Meeting. Submittals for the Daily Report of Operations will be available to the public.

Daily Log of Surveys Performed; G,COR

When the Contractor conducts his own surveys of the contract work, a daily log of surveys performed shall be submitted. A sample daily log is included at the end of this section. The log shall include the area surveyed, the tide gauge used, and the calibrations performed (e.g. barchecks, SV probes).

Daily Dredgehead Positioning Records; G,COR

Fuel Usage

Section 35 20 23 Page 2

SD-07 Certificates

Aggregate Material; G,COR

Submit certificates from the aggregate material suppliers, attesting that the materials conform to the project requirements;

based on independent laboratory tests performed within the last 5 years. If test results are not available, the required testing shall be performed before the material can be approved for use on this project.

Certified Weight Scale Tickets

1.4 ORDER OF WORK AND DREDGING RESTRICTIONS

Unless otherwise directed by the Contracting Officer, the Contractor is required to commence dredging work in Fairless Turning Basin, Acceptance Section 1 and work downstream to Acceptance Section 6. If Option 1 is awarded, Acceptance Section 7 shall be completed last. Dredging in the Delaware River between Burlington and Newbold Islands must be conducted between 1 July and 31 December. Dredging within Fairless Turning Basin must be conducted between 1 July and 15 March.

1.4.1 Hopper Dredging

Hopper dredging will not be permitted under this contract.

1.4.2 Hydraulic Dredging

Excavate material by hydraulic pipeline dredge and transport the material by pipeline to final discharge position in the approved disposal area without the use of rehandling basins or placing in scows or other similar vessels. Keep pipelines in good condition at all times, and promptly and properly repair leaks or breaks. Clear and remove materials that leak from pipelines on or around access roads, and place within the limits of the disposal area by a means which will preclude any loss of material to the river prior to deposition in the disposal areas.

1.4.3 Mechanical or Bucket Dredging

Mechanical or bucket dredging will be permitted under this contract.

Material excavated by mechanical or bucket dredging (bucket, drag, or dipper) shall be loaded to overflow only, and either directly pumped or mechanically offloaded from the scow to its final discharge position.

Pumped material shall be placed by a means that will preclude any loss of material to the river after loading and prior to deposition. Special care shall be taken to ensure that scows do not leak during any portion of the work.

1.5 CHARACTER OF MATERIALS

a. The material to be removed to restore the depth to within the limits called for in the specifications and drawings, is that composing the shoaling which has occurred since the channel was last dredged as noted in Section 01 30 00 ADMINISTRATIVE REQUIREMENTS. The character of the material is believed to be as indicated by the results of Government-conducted sampling. Abstract of bottom samples can be found in

Section 35 20 23 Page 3

Appendix B40 ABSTRACT OF BOTTOM SAMPLES. Sediment Core Logs can be found in Appendix B41. Material typically dredged and sampled in the past consisted of very soft silt with some clay and fine sand. Metal debris was dredged along the bulkhead when the Fairless Turning Basin was previously dredged. As a result, trash, metal, and other debris may be encountered during dredging operations.

b. It is the Government's position that sufficient information has been provided in this contract package to enable the Contractor to establish the type and quantity of material to be removed. USACE Survey and Mapping hydrographic survey information is available online through the eHydro link at http://navigation.usace.army.mil/Survey/Hydro. Data on this or other websites are not appropriate for volume computations. Full datasets are available upon request. However, prior to bidding, the Contractor may, at his discretion and expense, conduct additional investigation to further determine conditions at the site.

1.6 SITE CONDITIONS

Bidders are expected to examine the site of the work, including the disposal area and decide for themselves as to the conditions affecting their operations. See the Contract Clause titled: "SITE CONDITIONS AND CONDITIONS AFFECTING THE WORK". The entire work site is designated as a hard hat area in accordance with EM 385-1-1.

1.7 DAILY DREDGEHEAD POSITIONING RECORDS

For all dredging and for each dredge employed under this Contract, a computerized positioning system capable of representing the horizontal and vertical position of the hydraulic cutterhead and mechanical dredge bucket at any given time throughout the dredging cycle shall be utilized.

Horizontal and vertical positioning of the dredge cutterhead and dredge bucket shall be recorded at intervals not greater than one minute in duration. The horizontal and vertical (x,y,z) positions of the dredge cutterhead and dredge bucket shall be provided to the COR in an approved electronic format. Commercially available systems such as those offered by companies under the registered trademarks of Dredgepak, Winops, or similar proprietary systems developed by the Contractor would be considered satisfactory. The system shall produce a record of the working locations, horizontal and vertical, of the cutterhead and dredge bucket in a continual display and in a submittal satisfactory to the COR. Submittals of this information shall be transmitted electronically to the COR daily at the same time as the Daily Operations Report.

1.8 HYDROGRAPHIC SURVEYS

Conduct hydrographic surveys to meet USACE Performance Standards for Navigation and Dredging Support, as defined in the Hydrographic Surveying Manual EM 1110-2-1003. Perform surveys by single transducer sounding techniques, multi-beam sweep type surveys or both. Bottom soundings shall be obtained by the single beam fathometer operating at a frequency ranging from 190 to 210 kHz. When utilizing multi-beam technology, the operating frequency will range from 180 to 250 Khz in hard bottom areas. In soft bottom areas, 24 KHz low frequency depth may be used. All fathometers shall be calibrated following procedures outlined in the referenced EM.

1.9 FUEL OIL HANDLING

Ensure that all fuel oil transfer operations to or from the plant comply

Section 35 20 23 Page 4 with all Federal, state, and municipal laws, codes and regulations.

Incorporate in the Accident Prevention Program, submitted in compliance with the Contract Clause: "ACCIDENT PREVENTION", sufficient information to demonstrate compliance with 33 CFR 156 and any other applicable laws, codes, and regulations.

Submit on or before the last day of each month, a Fuel Usage report listing the totals of fuels consumed by the dredging plant and supporting vessels.

Separately list the quantities of each type of fuel used. Each report shall cover the period from the 25th of the preceding month to the 25th of the current month.

1.10 GOVERNMENT PLANT

Government plant may perform dredging or use disposal sites in any Delaware River assignment area during the time of this contract.

PART 2 PRODUCTS

2.1 AGGREGATE MATERIAL

Submit certificates from the aggregate material suppliers, attesting that the materials conform to the project requirements; based on independent laboratory tests performed within the last 5 years. If test results are not available, the required testing shall be performed before the material can be approved for use on this project. Submit certification that recycled material being used as graded aggregate, is neither hazardous nor toxic.

2.1.1 Crushed Aggregate Ramp

Coarse aggregate shall be as specified in 703.2 of PennDOT Publication 408.

Quality of aggregate shall be as specified for Type B in Table B and gradation shall be as specified for PennDOT Type 2A in Table C of the same section.

PART 3 EXECUTION

3.1 INSPECTION

Inspect the work, keep records of work performed, and ensure that gages, targets, ranges, and other markers are in place and usable for the intended purpose. Furnish, at the request of the Contracting Officer, boats, boatmen, laborers, and materials necessary for inspecting, supervising, and surveying the work. When required, provide transportation for the Contracting Officer and inspectors to and from the disposal area and between the dredging plant and adjacent points on shore.

3.2 CONDUCT OF DREDGING WORK

3.2.1 Lights

Each night, between sunset and sunrise and during periods of restricted visibility, provide lights for floating plants, pipelines, ranges, and markers. Also, provide lights for buoys that could endanger or obstruct navigation. When night work is in progress, maintain lights from sunset to sunrise for the observation of dredging operations. Lighting shall conform to United States Coast Guard requirements for visibility and color.

Section 35 20 23 Page 5

3.2.2 Ranges, Gages, and Lines

Furnish, set, and maintain ranges, buoys, and markers needed to define the work and to facilitate inspection. Establish and maintain gages in locations observable from each part of the work so that the depth may be determined. Suspend dredging when the gages or ranges cannot be seen or followed. The Contracting Officer will furnish, upon request by the Contractor, survey lines, points, and elevations necessary for the setting of ranges, gages, and buoys.

3.2.3 Plant

Maintain the plant, scows, coamings, barges, pipelines, and associated equipment to meet the requirements of the work. Promptly repair leaks or breaks along pipelines. Remove dredged material placed due to leaks and breaks.

3.2.4 Dredging Disposal

The material excavated from the Delaware River shall be transported, deposited, confined and graded to drain as specified within the Biles Island Disposal Area, as shown on the contract drawings.

3.2.5 Misplaced Material

Any material deposited in places other than those designated or approved by the Contracting Officer, or which escapes from such places, will not be paid for. The Contractor may be required to remove such misplaced material in accordance with the Contract Clause entitled: "OBSTRUCTION OF NAVIGABLE WATERWAYS", and deposit it where directed, at no additional cost to the Government.

3.2.6 Government Quality Control Monitor

The Government may place a Government monitor aboard the Contractor's dredge or supporting vessels to monitor quality control conditions during dredging and disposal operations. See Section 01 30 00 ADMINISTRATIVE REQUIREMENTS, paragraph titled "ACCOMMODATIONS AND MEALS FOR GOVERNMENT

INSPECTORS".

3.2.7 Submerged Pipeline

If a leak occurs in the discharge pipeline, immediately discontinue using the line until leaks are repaired. Remove material placed due to leaks or breaks.

3.2.8 Floating Pipeline

Should the Contractor's pipeline not rest on the bottom, it will be considered a floating pipeline and shall be visible on the surface and clearly marked. In no case will the Contractor's pipeline be allowed to fluctuate between the surface and the bottom, or lie partly submerged.

Lights shall be installed on the floating pipeline as required in Section

01 30 00 "SIGNAL LIGHTS".

3.2.9 Navigation Warnings

Furnish and maintain navigation warning signs along the pipeline.

Section 35 20 23 Page 6

3.2.10 Method of Communication

Provide a system of communication between the dredge crew and the crew at the disposal area. A portable two-way radio is acceptable.

3.2.11 Salvaged Material

Anchors, chains, firearms, and other articles of value, which are brought to the surface during dredging operations, shall remain or become the property of the Government and shall be deposited on shore at a convenient location near the site of the work, as directed.

3.2.12 Plant Removal

Upon completion of the work, promptly remove plant, including ranges, buoys, piles, and other markers or obstructions.

3.3 DEVELOPMENT AND OPERATION OF DISPOSAL AREA

3.3.1 Contractor Coordination

a. Conduct a disposal area prep meeting and site visit prior to starting actual disposal area work.

b. At least 7 days prior to the use or modification of the disposal area, contact Mr. Dan Kelly, Project Manager, at 215-656-6889.

3.3.2 General

a. Submit a Disposal Area Plan prior to the use or modification of any Government-furnished disposal area. Conduct all work in accordance with the approved plan. The Contractor is responsible for the maintenance and repair of all Government-owned land, roads, and facilities used by him under the contract. Remove all Contractor-owned dredging pipe(shore or submerged) used in the contract work, from the site within 30 days of completion of all dredging work.

b. Take all necessary measures to ensure that the condition of the disposal area, namely the dike, does not deteriorate or become damaged due to the pumping of dredged material into the site. Take every precaution to meet each of the requirements outlined in this specification in order to maintain the integrity of the disposal area. Stop pumping into the disposal area and contact the Contracting Officer immediately if seepage occurs on the exterior toe of the dike.

3.3.3 Disposal Area

a. Existing retaining dikes are available for use. The Contractor will be permitted, in the Government-furnished disposal area, to construct any structures or use any means necessary to control the dredge effluent as required to meet these specifications, with prior approval from the Contracting Officer. All work performed in the disposal area by the Contractor shall be consistent with the approved disposal area plan.

b. Maintain, repair and stabilize all dikes, land, roads and structures used under the contract, and inspect the dikes on a daily basis to assure their safety and stability. Restore all roads and areas disturbed through contract operations to a satisfactory condition as approved by the Contracting Officer, at no additional cost to the Government. Do not

Section 35 20 23 Page 7 disturb existing piezometers and wells within the disposal area limits.

Piezometersor wells disturbed by the Contractor will be replaced by the Government at the Contractor's expense. The Waste Management POC for issues concerning ingress/egress at Biles Island disposal site is Mr.

Robert Jones, Biles Island Project Manager, at 215-428-4368. Direct issues concerning ingress or egress, initially to the POC. Should he not be available or if additional disposal area questions arise, contact the Philadelphia District Project Manager: Mr. Daniel Kelly, at 215-656-6889.

Coordinate all disposal activities with Mr. Kelly, at 215-656-6889.

c. Contractor-furnished pipelines shall enter the disposal area only within the the limits shown on the drawings. The Contracting Officer reserves the right to direct the extension of the Contractor-furnished pipelines beyond the discharge limits shown on the drawings, or to a specific location within the disposal area, if required for efficient management of the disposal area. Make provisions to prevent erosion of the dike embankment at the discharge point. The end of all discharge pipes shall be located inside the disposal area limits at a distance not less than the distance indicated on the drawings. Unless otherwise noted on the drawings, the end of the discharge pipe shall be located inside the disposal area limits at one of the following two distances measured normal to the dike centerline: 1) not less than 10 feet from the interior toe of the dike; or 2) not less than 50 feet from the interior crest of the dike;

whichever results in the longer pipe length. This length of pipe inside the disposal area shall be sufficiently and safely supported along the entire length by timber cribbing, a compacted earthen embankment or other means approved by the Contracting Officer. In addition, the pipe shall be angled in the horizontal plane such that the discharge does not scour the slope face or the toe-of-slope in the vicinity of the discharge area. The Government reserves the right to make the Government-furnished disposal area available for use by others when not in use as part of any work assignment under this contract. Obtain written permission from the Contracting Officer prior to entering on or utilizing any property owned or leased by the Government other than the diked disposal area.

d. Construct a crushed aggregate ramp as shown on the drawings to protect the discharge pipe where it crosses the existing access road. Construct the access ramp to the width of the access road, and compact the aggregate around the discharge pipe.

e. Biles Island Disposal Area is owned by Waste Management of Pennsylvania, Inc., and is available as a disposal area for this contract.

It is being provided to the Corps of Engineers under lease agreement by the Commonwealth of Pennsylvania under the terms of the local cooperation agreement for the Delaware River, Philadelphia to Trenton project authorization. See the contract drawings for the specific areas available for use. Currently, this site is being mined by leased equipment hired by Waste Management to support daily landfill capping needs. Maintenance work by the Contractor is not anticipated for this disposal area. There is no outlet structure and dewatering is not necessary. The average minimum freeboard above the ponded mining pit which averages depths to 25-feet is approximately 8-feet, which includes a 2-foot safety zone. Closely monitor the pool elevation and adjust the disposal pumping rate to ensure a minimum of 2-feet of freeboard is continuously maintained. Based on information provided by Waste Management, this 40-acre cell offers approximately 2,000,000 cubic yards of storage capacity

Section 35 20 23 Page 8

3.3.4 Additional Disposal Area Requirements

a. Borrow for diking material may be obtained from within the disposal area but not closer than 50 feet from the inside toe of the dike sections. Wet or dry borrow material as required to obtain optimum practical moisture content, in accordance with ASTM D1556/D1556M. Borrow material and the ground surface upon which it is to be placed, shall be free of all debris, timber and accumulations of vegetation. Place dike material in approximately equal layers not exceeding 12 inches in loose thickness and compact by the controlled traffic of spreading and/or hauling equipment over each layer. Borrowing of material from the area outside the existing perimeter dikes will not be permitted. Provide all impervious material required for mitigation of seepage problems during disposal operations from an approved off-site source if suitable material is unavailable from within the disposal area.

b. Maintain a freeboard of two feet or more, measured vertically between the retained materials and water and the top of the adjacent confining dikes. If the required freeboard is not met, stop pumping into the disposal area until corrective means that are satisfactory to the Contracting Officer have been taken.

c. Pipe type sluices are not permitted through exterior dikes, and the dredge pipe shall not enter the disposal area through an exterior dike.

The hydraulic placing of perimeter dikes is not permitted.

d. Perform modifications to the disposal area that prevents obstruction of drainage on upland areas adjacent thereto, and to leave free, clear and unobstructed outfalls of sewers, drainage ditches, and other structures affected by the disposal operations. Distribute dredged material within the used portion of the disposal area in a reasonably uniform manner that allows the disposal surface area to drain after fill operations have ceased without creating excessive ponding on the fill surface.

e. Provide a minimum of 2 personnel at the disposal area when work (disposal or other) is being performed at a disposal area. Provide a generator with a light plant sufficient to light the work area during darkness. Provide disposal area personnel two-way radio communication with the dredge at all times.

f. Perform routine inspections of the dikes prior to the start of dredging operations and at least twice a day during dredging operations. Conduct inspections along the entire perimeter of the disposal area, concentrating on the condition of the dike to ensure its integrity. If any signs of distress are noted during any inspection, pumping of dredged material must stop immediately and the Contractor shall notify the appropriate Army Corps personnel. Typical signs of distress may include excessive seepage, fissures and slope failures.

g. Government Pipelines: Government-owned pipelines will not be available for use by the Contractor. Prior to dredging operations, perform the following:

(1) Conduct a preparatory meeting with the COR for the inspection of the disposal area.

k. Inspect the disposal area after work is complete and the water has been drained from the area for signs of dike distress. If signs of dike distress are observed, notify the appropriate Army Corps personnel.

Section 35 20 23 Page 9

3.4 OVERDEPTH, SIDE SLOPES, AND EXCESIVE DREDGING

3.4.1 Overdepth

Material removed from within an acceptance section, to a depth of not more than 1 foot below the required depth, limited by a vertical plane through the required depth contour, will be estimated and paid for at the contract unit price for removal and disposal of material.

3.4.2 Side and End Slopes

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

Along the required dredging limits in the Delaware River and portions of the basin edges indicated on the contract drawings, dredge to a point extending 25 feet outside of channel and basin edges(box cut), where shoaling occurs along the channel and basin edges within the authorized contract limits (as determined by before-dredging surveys), unless otherwise determined or directed by the Contracting Officer.

3.4.3 Excessive Dredging

Material taken from beyond the limits specified in the Paragraphs "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 requirements of the Contract Clause "FINAL EXAMINATION AND ACCEPTANCE" and Section 01 30 00 ADMINISTRATIVE REQUIREMENTS, paragraph titled "SHOALING".

3.5 ESTIMATED QUANTITIES

The total estimated quantity of material necessary to be removed within the specified limits as shown on the drawings, including allowable overdepth and areas outside the turning basin limits as previously specified, is as follows. The word "Red" in parenthesis after stationing denotes only New Jersey side of channel requires dredging. The word "Green" in parenthesis after stationing denotes only Pennsylvania side of channel requires dredging. The following acceptance sections are specified for this contract:

BASE BID

Acceptance Station Req'd Dredging Overdepth Total Section to Station to 41' (CY) 41' to 42'(CY) Available (CY)

1 Fairless Turning Basin 75,000 25,000 100,000 2 122+700 to 123+700(Red) 30,000 6,000 36,000 3 121+200 to 123+700(Green) 150,000 10,000 160,000 4 117+000 to 119+500(Red) 22,000 10,000 32,000 5 114+500 to 117+000(Red) 21,000 17,000 38,000 6 109+700 to 113+019(Green) 42,000 12,000 54,000

TOTALS 340,000 80,000 420,000

Section 35 20 23 Page 10

OPTION 1

Acceptance Station Req'd Dredging Overdepth Total Section to Station to 25' (CY) 25' to 26'(CY) Available (CY)

7 123+700 to 124+677(Green) 58,000 7,500 65,500

3.6 LIMIT OF DREDGING

3.6.1 General

The areas to be dredged are within the contract limits as indicated on the contract drawings, and as specified in the Contract Clause titled: FINAL EXAMINATION AND ACCEPTANCE, and as defined by dredging prism indicated in the Paragraphs "OVERDEPTH, SIDE SLOPES, AND EXCESIVE DREDGING", and "MEASUREMENT AND PAYMENT", of this section.

Along those edges indicated on the drawings, dredge to a point extending 25 feet outside the channel edges where shoaling occurs along the channel or basin edge within the authorized contract limits (as determined by before-dredging surveys), unless otherwise determined or directed by the Contracting Officer.

3.6.2 Quantity Acceptance

Clear each acceptance section in its entirety to the required depth prior to acceptance of the work by the Government. If after-dredging surveys of a portion of an acceptance section indicate dredging is required, and it was indicated by the before-dredging surveys, remove required material found to be remaining above the required depth, unless such dredging is waived by the Contracting Officer. Dragging of a bar or other device will not be allowed. Material removed as a result of redredging, within the dredging prism, will be paid for at the contract unit price and quantity as determined by the difference between initial 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 any additional quantity calculation will be made based on the after-dredging surveys, provided the material is not determined by the Contracting Officer to be misplaced material.

3.7 DEBRIS REMOVAL

Remove debris that may be encountered during dredging operations. Exact locations, types, and quantities of debris is unknown. Debris removed from the dredged area shall be removed from the water. Disposal shall be the responsibility of the Contractor and disposal shall be outside the limits of Government property.

3.8 CONTRACTOR QUALITY CONTROL

Prepare and maintain Daily Report of Operations forms. Sample Daily Report of Operations forms are attached at the end of this Section. Further instructions on the preparation and submittal of these forms will be provided at the Pre-Dredging Coordination Meeting.

Section 35 20 23 Page 11

3.9 FINAL EXAMINATION AND ACCEPTANCE

As soon as practicable after the completion of areas, which in the opinion of the Contracting Officer, will not be affected by further dredging operations, each area will be examined by the Government by sounding or sweeping, or both. Remove shoals and lumps by dredging. However, if the bottom is soft and the shoal areas form no material obstruction to navigation, removal may be waived at the discretion of the Contracting Officer. The Contractor will be notified when soundings or sweepings are to be made and will be permitted to accompany the sounding or sweeping party and to inspect the data and methods used in preparing the final estimate. When areas are found to be in a satisfactory condition, the work therein will be accepted as complete. Final estimates will be subject to deductions or correction of deductions previously made because of excessive overdepth, dredging outside or authorized areas, or disposal of material in an unauthorized manner. Should more than two soundings or sweeping operations by the Government over an area be necessary by reason of work for the removal of shoals disclosed at a prior sounding or sweeping, the cost of such third and any subsequent sounding or sweeping operations will be charged against the Contractor. The rate of each day in which the Government plant is engaged in such sounding or sweeping operations and/or is enroute to or from the site or held, for the Contractor's convenience, at or near the site for these operations shall be $5,500.00, except on Saturday, Sunday and holidays when the rate shall be $6,000.00.

3.10 MEASUREMENT AND PAYMENT

3.10.1 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 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 will be included in the final payment for work under this contract.

3.10.1.1 Cost Data

In the event the Contracting Officer considers that the amount in this item (60 percent) 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.

3.10.1.2 Mobilization and Demobilization Costs

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 the Bid Item titled, "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; preparation of disposal

Section 35 20 23 Page 12 area; 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 area including the removal and disposal of all tires and trash/metal/debris resulting from the dredging operation. Damages to disposal area access roads must be repaired before contract end.

3.10.2 Disposal Area Costs

All costs in connection with the development and cleanup of the disposal area, including drainage structure work, shall be included in the contract lump sum price for the Bid Item titled "Mobilization and Demobilization", as listed in the Bidding Schedule. Maintenance of the disposal area shall be included in the contract unit price for the Bid Item titled, "Removal & Satisfactory Disposal of Material".

3.10.3 Debris

The work specified in this section for the removal and satisfactory disposal of debris will be measured for payment by the tons of debris removed and satisfactoraly diposed of using certified weigh tickets. All costs in connection therewith, including equipment downtime, shall be included in the contract unit price for the Bid Items titled, "Debris Removal". Quantities will be computed to the nearest whole ton. Debris shall be measured for payment by weighing on approved, accurately calibrated scales furnished by and at the expense of the Contractor. The scales shall be capable of printing a weight ticket including time, date, truck number, and weight. Weight certificates furnished by a public weighmaster will be acceptable. Submit a copy of each Certified Weight Scale Tickets, within 7 working days after weighing.

3.10.4 Dredging Quantities

Dredging quantities will be conducted as follows:

3.10.4.1 Dredging - Channel Clearance Surveys

a. The material to be removed above project depth within each acceptance section will be determined by an before dredging survey conducted by the Government prior to dredging. The sorted XYZ dataset will be generated from the edited multi-beam files utilizing the un-shifted average cell sounding contained within a 3 foot by 3 foot matrix.