W912BU-17-B-0009_Specs-AM2.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

W912BU

Delaware River Main Channel Deepening Project - Upper Reach B

THIS AMENDMENT ANSWERS CURRENT RFI QUESTIONS AND AMENDS PORTIONS OF THE SOLICITATION.

THE BID DUE DATE WILL REMAIN 31 MAY 2017 AT 11:00 AM EST.

Please indicate receipt of this amendment on Standard Form 1442 (SOLICITATION, OFFER, AND AWARD) as

Amendment No. 0002. Failure to acknowledge all amendments may be cause for rejection of the bid.

E5CTCRH9

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-0009-0002

05/23/2017

9B. DATED (SEE ITEM 11)

05/1/2017

1 1

This page was intentionally left blank for duplex printing.

Amendment No. 0002

IFB W912BU-17-B-0009

14. DESCRIPTION OF AMENDMENT (continued)

a. REQUESTS FOR INFORMATION (RFI) WITH RESPONSES: RFI’s with responses, annotated Amendment No. 0002, are attached to this amendment.

b. SECTION 00 70 00 – CONTRACT CLAUSES: Please delete page 00 70 00-19 in its entirety and substitute the revised page 00 70 00-19, annotated Amendment No. 0002, attached hereto.

c. TECHNICAL SPECIFICATIONS:

(1) Section 35 20 23 – DREDGING: Please delete Section 35 20 23 in its entirety and substitute the revised Section 35 20 23, annotated

Amendment No. 0002, attached hereto.

d. Please indicate receipt of this amendment on Standard Form 1442 (SOLICITATION, OFFER, AND AWARD) as Amendment No. 0002. Failure to acknowledge all amendments may be cause for rejection of the bid.

RFI# Request for Information Response

The last sentence of Paragraph 3.9.1 of Section 35 20 23, under “Mobilization and Demobilization”, states that “The remaining forty percent will be included in the final payment for work under this contract.” If Option 2 is awarded, this contract could be open until 2019. Is it the Corps’ intention to hold 40% of the Base Bid Mobilization payment until the entire contract is completed?

No. See Amendment No. 0002

The response given by the Corps to RFI No. 10 in Amendment 0001 refers the contractor to Contract Clause 52.217-7. This paragraph states that the Corps has 120 days from NTP to award the Options. If NTP is issued on July 15, 2017, the Corps could award Option 1 on/about November 15, 2017. This would give the contractor approximately 45 days to complete Option 1, (16 days of which are set aside to perform Acceptance Section 21 of the Base Bid which must be done between December 15 and December 31). Although Option 1 only has 197,065 CY, it is spread out over approximately 9 miles of channel. This is an extraordinary amount of coverage to achieve in the short period of approximately 29 days. Please consider either reducing the amount of time allowed for award of Option 1 to 30 days, or extending the contact completion date for Base Bid plus Option 1 until March 15, or both. See Amendment No. 0002

REQUESTS FOR INFORMATION with RESPONSES Solicitation No. W912BU-17-B-0009

W912BU-17-B-0009 00 70 00-20

in writing, an extension of time, to be received by the Contracting Officer within 10 days from the beginning of the delay, or within such further period as may be granted by the Contracting Officer before the date of final settlement of the contract. Upon the receipt of a written request for an extension, the Contracting Officer shall ascertain the facts and make an adjustment for extending the completion date as, in the judgement of the Contracting Officer, is justified.

52.214-26 AUDIT AND RECORDS--SEALED BIDDING (OCT 2010)

(a) As used in this clause, records includes books, documents, accounting procedures and practices, and other data, regardless of type and regardless of whether such items are in written form, in the form of computer data, or in any other form.

(b) Certified cost or pricing data. If the Contractor has been required to submit certified cost or pricing data in connection with the pricing of any modification to this contract, the Contracting Officer, or an authorized representative of the Contracting Officer, in order to evaluate the accuracy, completeness, and currency of the certified cost or pricing data, shall have the right to examine and audit all of the Contractor's records, including computations and projections, related to--

(1) The proposal for the modification;

(2) The discussions conducted on the proposal(s), including those related to negotiating;

(3) Pricing of the modification; or

(4) Performance of the modification.

(c) Comptroller General. In the case of pricing any modification, the Comptroller General of the United States, or an authorized representative, shall have the same rights as specified in paragraph (b) of this clause and also the right to interview any current employee regarding such transactions.

(d) Availability. The Contractor shall make available at its office at all reasonable times the materials described in reproduction, until 3 years after final payment under this contract, or for any other period specified in Subpart 4.7 of the Federal Acquisition Regulation (FAR). FAR Subpart 4.7, Contractor Records Retention, in effect on the data of this contract, is incorporated by reference in its entirety and made a part of this contract.

(1) If this contract is completely or partially terminated, the records relating to the work terminated shall be made available for 3 years after any resulting final termination settlement.

(2) Records pertaining to appeals under the Disputes clause or to litigation or the settlement of claims arising under or relating to the performance of this contract shall be made available until disposition of such appeals, litigation, or claims.

(e) The Contractor shall insert a clause containing all the provisions of this clause, including this paragraph (e), in all subcontracts expected to exceed the threshold in FAR 15.403-4(a)(1) for submission of certified cost or pricing data.

(End of clause)

52.214-27 PRICE REDUCTION FOR DEFECTIVE CERTIFIED COST OR PRICING DATA -

MODIFICATIONS - SEALED BIDDING. (AUG 2011)

SECTION 35 20 23

DREDGING

PART 1 GENERAL

1.1 SCOPE

The work covered by this section consists of furnishing all labor, materials, plant, and equipment and performing all operations required for the removal of dredge material from the Marcus Hook Range, Bellevue Range, Tinicum, Chester, Eddystone, and the Marcus Hook Anchorage of the Delaware River Main Channel and placement of the material into the Government-furnished Oldmans disposal facility. When the Oldmans disposal area reaches capacity, as determined by the Contracting Officer, the Government-furnished Pedricktown North disposal area will be made available.

1.2 DEFINITION

Hard material is defined as material requiring blasting or the use of special equipment for economical removal, and includes: ledge rock, wrecks, snags, stumps, piles or rock fragments and boulders too large to be removed to below project depth by the dredge.

1.3 REFERENCES

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

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

(AASHTO)

AASHTO M 43 (2005; R 2009) Standard Specification for Sizes of Aggregate for Road and Bridge Construction

AMERICAN WOOD PROTECTION ASSOCIATION (AWPA)

AWPA U1 (2015) Use Category System: User Specification for Treated Wood

AWPA M4 (2015) Standard for the Care of Preservative-Treated Wood Products

AWPA M6 (2013) Brands Used on Preservative Treated Materials

AWPA P5 (2015) Standard for Waterborne Preservatives

AWPA T1 (2015) Use Category System: Processing and Treatment Standard

ASTM INTERNATIONAL (ASTM)

ASTM D1556/D1556M (2015) Standard Test Method for Density

Section 35 20 23 Page 1 and Unit Weight of Soil in Place by Sand-Cone Method

ASTM E100 (2015) ASTM Hydrometers

NEW JERSEY DEPARTMENT OF TRANSPORTATION (NJDOT)

NJDOT Specifications (2007 Edition) Standard Specifications for Road and Bridge Construction

SOUTHERN PINE INSPECTION BUREAU (SPIB))

SPIB 1003 (2002) Standard Grading Rules for Southern Pine Lumber

U.S. ARMY CORPS OF ENGINEERS (USACE)

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

EM 1110-2-1003 (2013) Hydrographic Surveying

U.S. DEPARTMENT OF COMMERCE (DOC)

DOC PS 20-10 (2010) American Softwood Lumber Standard

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

33 CFR 156 (2008) Navigation and Navigable Waters, Oil and Hazardous Material Transfer Operations

1.4 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. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

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 Government-furnished disposal areas. Show the areas or portions thereof to be used, the locations and cross-sections of proposed dikes, the locations of sluices and drainage structures, and the manner in which the dredged material will be distributed in the disposal areas, and the manner in which the initial weir elevation/sluice height at the sluice is to be established at the beginning of the disposal operation.

Outfall Extension Work Plan; G,COR

Submit for approval, a plan for the sluice outfall pipes extension at the Government-furnished disposal areas. Include in the plan a description of the proposed method for securing the

Section 35 20 23 Page 2 pipes as required by these specifications. Include sketches showing plan and elevation views and details for the proposed method and data on the materials to be used.

Discharge Pipe Support; G,COR

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

Pumpout Plan; G,COR

If a hopper dredge or scow is used for the contract work, submit proposed plan for direct pumpout of dredged material. The plan shall include the description, dimensions, and location of the proposed facility. Include detailed descriptions of the personnel, materials, equipment and methods proposed to be utilized to complete this task.

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. The capacity of all scows shall be included in the equipment list. Also include in the list the survey vessel, survey crew, type of survey equipment, and software that may be used.

SD-02 Shop Drawings

Submerged Pipeline; G,DO Soundings or Sweepings; G, DO

Indicate pipeline location and installation details. Submit drawings of surveys during progress of work by soundings or sweepings.

SD-05 Design Data

Fall Protection; G, DO

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 are available to the public.

DGPS Positioning

Section 35 20 23 Page 3

The real time positioning of the dredge shall be recorded, by DGPS, on a computer disk every 1 minute and submitted on a daily basis.

Daily Dredgehead Positioning Records; G,COR

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 hopper draghead, and/or hydraulic cutterhead, and/or Clamshell Bucket at any given time throughout the dredging cycle shall be utilized.

Horizontal and vertical positioning of the draghead and/or cutterhead and/or bucket shall be recorded at intervals not greater than one minute in duration. The horizontal and vertical (x,y,z) positions of the dredge draghead, cutterhead, and/or 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 draghead and/or cutterhead and/or 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.

Disposal Area Effluent Measurements; G,COR Inspector's Report; G,DO

SD-07 Certificates

Timber for Flashboards and Sluice Box Walkways; G,COR

Certificates of compliance attesting that the timber flashboards and sluice box walkway timber conform to the requirements of this specification shall be submitted for approval.

Aggregate Material; G,COR

Submit certificates, obtained from all imported 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.

1.5 ORDER OF WORK AND DREDGING RESTRICTIONS

Perform the work in the following order:

1) AS-14 to AS-20 and AS-22 to AS-26 (Base Work)

2) AS-1 to AS-4 (Base Work)

3) AS-39 to AS-46 (Base Work)

4) AS-21 (Base Work) and AS-5 to AS-7 and AS-9 to AS-13 (Option 1 Work)

5) AS-27 to AS-30 (Option 2 Work)

6) AS-8 and AS-31 to AS-38 (Option 2 Work)

Section 35 20 23 Page 4

If the Contractor intends to utilize more than one dredge, Contractor-proposed concurrent dredging at multiple locations will be permitted only as approved by the Contracting Officer.

The following restrictions will also be enforced:

1) Access to AS-21 (Base Work) will not be available until 15 December 2017.

2) The Base Contract shall be completed no later than 31 December 2017.

3) Access to AS-5 to AS-7 and AS-9 to AS-13 (Option 1 Work) will not be available until 1 October 2017.

4) Option 1 shall be completed no later than 15 March 2018.

5) Access to AS-27 to AS-30 (Option 2 Work) will not be available until 1 October 2017.

6) Access to AS-8 and AS-31 to AS-38 (Option 2 Work) will not be available until 1 July 2018.

7) Option 2 shall be completed no later than 1 December 2018.

All dredging under this contract shall be subject to the requirements specified in Section 01 57 20 ENVIRONMENTAL PROTECTION and the following seasonal time restrictions:

a. Hydraulic cutter head dredging in the Delaware River will only be permitted between 1 August and 15 March.

b. Hopper dredging in the Delaware River will only be permitted between 1 July and 15 March. Hopper dredging in the Delaware River will be restricted as described in Appendix A, titled "MONITORING SPECIFICATIONS FOR DREDGES", of specification Section 01 57 20, ENVIRONMENTAL PROTECTION.

c. Mechanical Dredging in the Delaware River will only be permitted between 1 July and 15 March.

1.6 SCHEDULING OF WORK

1.6.1 Plant and Equipment

Provide sufficient dredge plant and equipment capable of performing at the necessary production rate required to complete the project in the allotted time, and shall employ this equipment by continuously dredging from the start of the work until the completion of the job, except for allowable down time for movement of pipe, etc. Complete any site work required at the Government-furnished disposal areas in sufficient time so as not to delay any of the work. Movement of equipment between successively used disposal areas will not be subject to assessment of liquidated damages except as specified under paragraph entitled: "MEASUREMENT AND PAYMENT".

1.7 MATERIAL TO BE REMOVED

The areas to be dredged under this contract includes portions of the Marcus Hook Range, Tinicum, Chester, Eddystone, Bellevue Range, and the Marcus Hook Anchorage of the Delaware River. The locations and limits are shown on the drawings. The material to be removed under this contract consists of maintenance and new work material. The maintenance material consists of the material that has shoaled within the main channel between Station 119+500 and 128+500, to a depth of -44 feet MLLW. The new material consists of the

Section 35 20 23 Page 5 remaining material within the main channel between Station 96+000 and 155+000, and the Marcus Hook Anchorage (Station 122+200 to 133+209), to a depth of -45 feet plus 1 foot allowable overdepth. Between Station 119+500 and 128+500 (Marcus Hook Shoal), new material will also be remove to a depth of -47 feet plus 1 foot allowable overdepth for advanced maintenance.

The material to be dredged will include maintenance material and new material. The maintenance material generally consists of unconsolidated silt with some fine sands. The new material to be encountered generally consists of sand and gravel, with cobbles and consolidated silts and clays.

Vibracore data from current geotechnical investigations are included Appendix A. Historic vibracore data from previous geotechnical investigations are provided in Appendix B. The information depicted on the vibrational core logs represent the results of subsurface explorations made on the dates indicated and can only be considered as conditions existing at that time.

1.7.1 Hard Material

The removal of hard material is not included. Should hard material, as identified in Paragraph "DEFINITION", 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 hard material by special means at prices agreed upon and approved in accordance with Contract Clause:

"DIFFERING SITE CONDITIONS". Should the Government direct in writing that hard material be removed, the work shall be performed and an adjustment in the contract price or time for completion, or both, will be made in accordance with "FAR 52.236-2, Differing Site Conditions." If hard material is to be removed, blasting will not be permitted.

1.7.2 Character of Materials

a. 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. However, prior to bidding, the Contractor may, at his discretion and expense, conduct additional investigation to further determine conditions at the site.

b. A permit is required to perform site investigations. The application shall be submitted to US Army Corps of Engineers, Philadelphia District.

The Point of Contact is William Jenkins, Environmental Engineer, Telephone 215-656-6726, e-mail william.h.jenkins@usace.army.mil.

1.8 SITE CONDITIONS

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

1.9 DIFFERENTIAL GLOBAL POSITIONING SYSTEM (DGPS) EQUIPMENT

The Contractor must have a differential GPS, and shall conduct his survey work in accordance with the requirements in the U.S. Army Corps of Engineers Hydrographic Surveying Manual EM 1110-2-1003. Provide real time DGPS positioning of the dredge, on a computer screen during dredging

Section 35 20 23 Page 6 operations, and have the capability of playback in 1 minute intervals.

Record the dredge position on a disk every 1 minute and submit this to the Contracting Officer on a daily basis. Provide data in ESRI ArcGIS 10.x Shapefile format (.shp), including all components and extensions, or in a Spatial Data Standard compliant geodatabase. Real time positioning data shall include northing, easting, elevation, date and time of information.

1.10 FUEL OIL HANDLING

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

1.11 GOVERNMENT PLANT

The Government reserves the right to utilize another plant in any of the work assignment areas during the contract period.

1.12 ENVIRONMENTAL PROTECTION REQUIREMENTS

Provide and maintain during the life of the contract, environmental protective measures specified in Section 01 57 20 ENVIRONMENTAL PROTECTION.

Also, provide environmental protective measures required to correct conditions, such as oil spills or debris, that occur during the dredging operations. Comply with Federal, State, and local regulations pertaining to water, air, and noise pollution.

PART 2 PRODUCTS

2.1 TIMBER FOR FLASHBOARDS AND SLUICE BOX WALKWAYS

Timber for flashboards and sluice box walkways shall be Southern Yellow Pine, Grade No. 1, and shall conform to the SPIB 1003 and the applicable requirements of U. S. Department of Commerce DOC PS 20-10. The timber shall be surfaced on four sides and the dress size shall conform to U. S.

Department of Commerce DOC PS 20-10. Treat wood as specified in AWPA U1, for UCS category UC4A (For Above Ground, Soil Contact or Fresh Water Use), in accordance with AWPA T1, with water-borne preservative listed in AWPA P5, except that chromated zinc chlorides, pentachlorophenol-ammoniacal systems, and alkyl ammonium compounds will not be allowed. Each piece of treated lumber or timber shall be branded, by the producer, in accordance with AWPA M6. Flashboards shall be 4 inch nominal thickness.

2.1.1 Brush-Applied Preservative Treatment

AWPA M4.

2.2 AGGREGATE

Submit certification that any recycled material, which is being proposed for use as graded aggregate, is neither hazardous nor toxic.

2.2.1 Crushed Aggregate Ramp

Aggregate gradation size AASHTO No. 57 in accordance with AASHTO M 43 or dense graded aggregate or recycled crushed concrete conforming to Section

Section 35 20 23 Page 7

901.10 of the NJDOT Specifications, or an approved equal.

2.2.2 Aggregate for Inlet Boxes

AASHTO No. 1 stone, in accordance with NJDOT Specifications Section 901, Table 901.03-1, or an approved equal.

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.

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

Excavate dredge material by hopper, hydraulic or bucket dredging. Provide for safe transportation and disposal of dredged materials. Transport and dispose of dredged material in the Government-furnished Oldmans disposal area and Pedricktown North disposal area (when Oldmans reaches capacity).

The deposit of dredged materials in unauthorized places is forbidden.

Comply with rules and regulations of local port and harbor governing authorities.

Section 35 20 23 Page 8

3.2.4.1 Hopper Dredging

Hopper dredging will be permitted under this contract with direct pumpout of dredged material to final discharge position in the approved disposal areas. Material removed by hopper dredging shall be loaded to overflow only and pumped directly into the approved Government-furnished upland disposal areas by a means which precludes any loss of material to the river prior to deposition in the disposal areas. Special care shall be taken to ensure that hoppers do not leak during any portion of the work.

3.2.4.2 Hydraulic Dredging

Excavate material by hydraulic pipeline dredge and transport the material by pipeline to final discharge position in the approved Government-furnished upland disposal areas without the use of rehandling basins or placing in scows or other similar vessels. Keep pipelines in good condition at all times, and properly repair leaks or breaks promptly.

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.

3.2.4.3 Mechanical Dredging

Excavate material by mechanical dredging (bucket, drag, or dipper), loaded to overflow only, with direct scow pumpout of dredged material to final discharge position in the approved Government-furnished upland disposal areas. 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.

3.2.4.4 Misplaced Material

Any material deposited in places other than those designated or approved by the Contracting Officer, or which escapes from such places, is prohibited, and payment will not be made. The Contractor may be required to remove such misplaced material in accordance with Contract Clause entitled:

"OBSTRUCTION OF NAVIGABLE WATERWAYS" and deposit it where directed at no additional cost to the Government.

3.2.4.5 Government Quality Control Monitor

The Government may place a Government monitor aboard the Contractor's dredge(s) or supporting vessels to monitor quality control conditions during dredging and disposal operations. See Section 00 73 00 of this specification, Special Clause entitled "ACCOMMODATIONS AND MEALS FOR

GOVERNMENT INSPECTORS".

3.2.4.6 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.

3.2.4.7 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

Section 35 20 23 Page 9 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 00 73 00, SPECIAL CLAUSE titled "SIGNAL LIGHTS".

3.2.5 Navigation Warnings

Furnish and maintain navigation warning signs along the pipeline.

3.2.6 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.

3.2.7 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.

3.2.8 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 GOVERNMENT-FURNISHED UPLAND DISPOSAL AREAS

3.3.1 General

Prior to the use or modification of Government-furnished upland disposal areas, submit a disposal area plan as specified in Paragraph "SUBMITTALS".

Conduct work in accordance with the approved plan; however, approval of the plan does not in any manner relieve the Contractor of his responsibility for the adequacy of the design and construction of the structures and drainage facilities required. The Government-furnished upland disposal area s approved for use under this Contract are Oldmans and Pedricktown North.

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

3.3.2 Outfall Extension Work Plan

a. Install extensions to the four 30 inch sluice outfall pipes at the Oldmans Disposal Area, as shown on the drawings. Extend each outfall pipe such that the discharge end of the pipes are located within the mixing zone of the Delaware River (approximately 50 feet). Each pipe extension shall be secured to the respective sluice outfall pipe to prevent dislodging during pipeline flow and inclement weather.

b. The outfall point of the extension pipes shall be at the following New Jersey State Plain Zone 2900 coordinates:

Oldmans - E 229,860, N 346,710

Section 35 20 23 Page 10

c. The extension pipes shall be temporary and upon completion of the work, the materials shall be removed and become the property of the Contractor.

d. No excavation work will be required to perform this work.

3.3.3 General Requirements for Government-Furnished Upland Disposal Areas

a. Existing retaining dikes, sluices and drainage structures are available for use. Make all repairs, strengthening, extensions and modifications to such facilities as are necessary for confining the excavated material and for controlling disposal area effluent until acceptance of all work under the contract. Construct other structures or use other means necessary to control the dredge effluent as required to meet these specifications. Any work done in the disposal areas by the Contractor requires the prior approval of the Contracting Officer.

b. Maintain, repair and stabilize all dikes, roads and structures used under the contract, and inspect the dikes on a daily basis to assure their safety and stability. Restore all dikes, roads, structures and areas disturbed through work operations to a satisfactory condition as approved by the Contracting Officer, at no additional cost to the Government. The Government will have the right to regulate the use of the disposal areas throughout the contract. Do not disturb existing instrumentation and wells within the disposal area limits. Instrumentation or wells disturbed by the Contractor will be replaced by the Government at the Contractor's expense.

c. Contractor-furnished pipeline(s) shall enter the approved disposal areas only within the limits shown on the drawings. The Contracting Officer reserves the right to direct the extension of the Contractor-furnished pipeline beyond the discharge limits shown on the drawings, or to a specific location within the disposal areas, if required for efficient management of the disposal areas. Make provisions to prevent erosion of the dike embankment at the discharge point. 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 areas.

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.

Section 35 20 23 Page 11

3.3.3.1 Special Requirements for Government-Furnished Disposal Areas

a. Borrow for diking material may be obtained from within the disposal areas 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. Any apparent seepage, stability, or safety problems shall be reported immediately to the Contracting Officer.

3.3.4 Additional Requirements for Government-Furnished Disposal Areas

a. 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.

b. Pipe type weirs will not be permitted through exterior dikes, and the dredge pipe will not be permitted to enter the disposal area through an exterior dike. The hydraulic placing of perimeter dikes will not be permitted.

c. Perform modifications to the disposal areas 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 areas in a reasonably uniform manner that allows the disposal surface areas to drain after fill operations have ceased without creating excessive ponding on the fill surface.

d. Ensure that all sluices have structurally sound access walkways with handrails on both sides of the walkway from the dikes to the sluices throughout their length, and a walkway in a "T" formation along the front of the sluices to enable the inspector to readily obtain the samples of the mixture going over the discharge box interior weir as hereinafter specified. Timber used to construct the walkways and handrails shall be in accordance with the requirements for the sluice box timber and in accordance with Section 21 of EM 385-1-1.

e. Prior to pumping material into the disposal areas, inspect the existing fall protection by a qualified person as defined in EM 385-1-1. Remove existing systems not meeting this approval, and install a new system in accordance with EM 385-1-1. Submit the inspector's report of the existing system and design data for new systems. For bidding purposes, assume new fall protection systems are required.

f. Provide full body safety harnesses for employees and Government inspectors during the installation and removal of flashboards and the taking of samples from the effluent sampling location in the discharge box.

Section 35 20 23 Page 12

Each person working on the sluice shall wear a safety harness that is attached to the sluice framework using an appropriate approved device that conforms to EM 385-1-1 requirements.

g. Provide a minimum of 2 personnel at the disposal area when work (disposal or other) is being done at a disposal area. Provide a generator with a light plant sufficient to light the sluice area during darkness.

Provide radio communication between the disposal area personnel and the dredge at all times.

h. 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 inspections, stop pumping the dredged material immediately and notify the appropriate Corps personnel. Typical signs of distress may include excessive seepage, fissures and slope failures.

i. Government Pipelines and Sluices: Government-owned submerged and shore pipelines will not be available for use by the Contractor. If the Contractor uses the existing sluices for this work, he shall be responsible for their maintenance. Prior to dredging operations, perform the following:

(1) Inspect sluice boxes for damage and/or deteriorated flashboards and steel framework in the presence of the Contracting Officer. Realign or replace flashboards that are mis-aligned, damaged or deteriorated prior to deposition of dredged material into the facility, and repair deteriorated or damaged steel framework as directed by the Contracting Officer.

(2) Remove dirt, mud and debris from inside the sluice box.

(3) Weight the entire bottom of the inlet box with 12 inches of aggregate, as shown on the figure included at the end of this section.

(4) During dredging operations, if a flashboard(s) deteriorates and there is no viable disposal option, grafting of plywood to weakened sluice walls may be utilized as a temporary fix as directed by the Contracting Officer. Polyethylene sheeting may also be attached to the outside flashboards to control seepage through the boards as directed by the Contracting Officer. However, as soon as practicable, remove and replace deteriorated flashboards with new wood. These sluices shall be functional and returned to the Government at the completion of the work assignment and shall be free of all damage except for normal wear and tear.

3.3.5 Modification of Government-Designated Disposal Area

The Government may perform modifications to the disposal area during periods when it is not being used for the work assignment. The Government-constructed embankments will enclose sufficient volume for retention of the pumped discharge for the Work Areas specified elsewhere in these specifications.

3.4 CONTROL OF DISPOSAL AREA EFFLUENT IN UPLAND DISPOSAL AREAS

3.4.1 General

Monitor disposal area conditions to preclude excessive ponding as described

Section 35 20 23 Page 13 in the Paragraph "Additional Requirements for Government-Furnished Disposal Areas", and also to maintain effluent quality as prescribed below.

a. Do not allow the density of the effluent discharged over the sluice to exceed 8 grams/liter.

Effluent quality is largely controlled by maintenance of the sluice box, including having the weir set at an appropriate elevation. The elevation of the sluice box weir is also referred to as the "sluice height". The initial sluice height shall be discussed in the Disposal Area Plan and shall be determined based on elevation of the exterior dikes, the desired ponding depth, and the expected rate of pumping from the dredging operation.

Review the sluice height on a continuing basis to maintain an optimum height, considering both effluent quality and the need to maintain at least 2 feet of freeboard at the exterior dikes. Perform corrective actions if effluent density exceeds the criteria specified herein. Two possible corrective actions are: 1) weir height may be raised in order to maintain acceptable effluent quality, provided that the required freeboard is not violated, or 2) the rate of discharge of dredged material into the disposal area may be reduced or suspended. In addition, manage the sluice height in accordance with the special requirements described under Paragraph "Sluice Management" below.

3.4.1.1 Sluice Management

To prevent "floating" of the sluice during filling and ensure its proper performance, follow the special sluice management practices listed below.

Refer to the attached figure at the end of this section for sluice box nomenclature.

a. Fill the inlet box on each sluice with water to stabilize the box and prevent it from floating. Such filling shall be done before raising the entire sluice elevation (i.e. before boarding up the inlet box) and such that the following criteria is maintained at all times:

At no time shall the head difference (i.e., difference in water elevations) between the inside and outside of the inlet box be more than half the height of water outside the box. For example, if it is anticipated that there will eventually be 6 feet of water outside the box, first allow half as much water into the inlet box, i.e., 3 feet of water, before completely boarding up the inlet box.

b. Maintain the top of exterior sluice boards around the inlet box at the same elevation to the maximum extent possible.

c. Maintain the top of exterior sluice boards around the discharge box at least 8 inches, i.e., minimum 2 boards, above the top of the exterior flashboards around the inlet box.

d. Set the interior weir between the inlet and discharge boxes 1 to 2 feet lower than the elevation of the exterior flashboards around the inlet box.

e. Remove and properly dispose of all floating debris lodged in and around the sluice boxes.

f. In order to minimize leaks, place burlap bags or an approved equivalent between the flashboards to act as a gasket and seal gaps that may exist between the boards. Weight or wedge flashboards into

Section 35 20 23 Page 14 place to prevent them from floating.

3.4.2 Effluent Sampling and Testing

Monitor the effluent from the disposal areas as described in this section.

Maintain awareness of the effluent quality by sampling throughout the operating period. The sampling required in this section is not to be confused with sampling and analysis that is to be performed by others for the purpose of reporting data to New Jersey DEP.

3.4.2.1 Effluent Density

Take and test samples for density determination and record the results.

Take samples at the sluice as often as required and at least twice daily at times when the flow is at the maximum rate and after the dredge has been operating continuously for not less than the time required for solids in suspension to flow from the discharge pipe to the sluice. Increase the minimum frequency of sampling at the sluice when effluent density increases or nears the maximum specified. Record density determinations, including times of sampling, on the Daily Report of Operations forms required in Paragraph "CONTRACTOR QUALITY CONTROL" of this section. Fax the hydrometer readings (expressed in Grams/Liter) daily to the US Army COE Philadelphia District Office, Operations Division, at 215-656-6922 or provide them directly to the Government Representative in the field. Collect each sample at the sluice from the mixture flowing over the discharge box interior weir as shown on the attached figure. Make a composite sample by partially filling, without overflow, a one-quart container for five or six consecutive intervals such that a total of about 1 gallon is collected and combined in a bucket or other suitable container. Determine the composite sample density by the hydrometer method, no more than 5 minutes after collecting the first one-quart container sample, otherwise discard the sample and make up a new one.

Hydrometer Method: The hydrometer used to determine the composite sample density shall be a soil hydrometer conforming to ASTM E100, Hydrometer No.

ASTM 152H, -5 to +60 grams per liter. This specified hydrometer reads density directly in grams per liter, so no other computations are required to determine density. Submit the proposed hydrometer brand and model for approval prior to commencing dredging operations. Use the hydrometer as specified by the manufacturer.

3.4.3 Records

Submit records of disposal area effluent measurements and corrective action taken, daily to the Contracting Officer.

3.4.4 Timber Flashboards

Prior to commencement of pumping, provide a sufficient number of flashboards for the sluice as required for the retention of dredged material under this contract and ensure 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 as specified in AWPA M4.

3.4.5 Continuing Effluent Control

Upon completion and acceptance of a work area, provide continuing, intermittent labor to ensure that effluent control is continued beyond the completion of dredged discharge into the disposal area. Continue the

Section 35 20 23 Page 15 control, including the removal of flashboards, 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 will not be considered part of the completion time for the contract.

3.5 OVERDEPTH DREDGING AND SIDE SLOPES

3.5.1 Overdepth Dredging

To cover unavoidable inaccuracies of dredging processes, material actually removed to a depth of 1 foot below the depth specified and within the dredging limits will be measured and paid for at the contract unit price for removal and disposal of material.

3.5.2 Side and End Slopes

Side slopes of 3H to 1V shall be constructed. Dredging on side slopes shall follow, as closely as…