W912P621B0019 AMDT 0002.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

Solicitation W912P621B0019 for Sturgeon Bay Dredging is hereby amended as follow s:

A. Updated Specif ication Section 35 20 23, added a paragraph in 3.4.6.4.1 on page 13.

B. All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

1 2

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 W912P621B0019

X 9B. DATED (SEE ITEM 11)

20-Aug-2021

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

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

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

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE

RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

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

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

CONTRACT ORDER NO. IN ITEM 10A.

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

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

D. OTHER (Specify type of modification and authority)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO.

5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

10-Sep-2021

CODE

U.S. ARMY ENGINEER DISTRICT, CHICAGO

231 SOUTH LASALLE STREET SUITE 1500

CHICAGO IL 60604-1437

W912P6 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912P621B0019

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

(End of Summary of Changes)

Sturgeon Bay Dredging FY21 W912P621B0019

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 20 23

DREDGING

04/06

PART 1 GENERAL

1.1 SCOPE

1.2 DEFINITIONS

1.2.1 Hard Material

1.2.2 Dredging Limits

1.2.3 Required Dredging Prism Depth

1.2.4 Required Dredging Prism Line

1.2.5 Required Dredging Prism

1.2.6 Allowable Dredging Prism Line

1.2.7 Allowable Dredging Prism Depth

1.2.8 Allowable Dredging Prism

1.3 REFERENCES

1.4 SUBMITTALS

1.5 MATERIAL TO BE REMOVED

1.5.1 Hard Material

1.6 SOUNDING EQUIPMENT DESCRIPTION AND CALIBRATION DATA

1.7 UTILITY PLAN

1.8 DREDGING DEPTH

1.9 DREDGING, CONVEYANCE AND PLACEMENT PLAN

1.10 DAILY REPORT OF DREDGING OPERATIONS

1.11 PLACEMENT AREA CONDITIONS

1.12 DELIVERY OF PLANT AND ORDER OF WORK

1.13 ARTIFICIAL OBSTRUCTIONS

1.14 SHOAL REMOVAL

1.15 SOUNDINGS

1.16 VOLUME CALCULATIONS

1.17 MONTHLY PARTIAL PAYMENTS

1.18 CONTINUITY OF WORK

1.19 ALLOWABLE PAY OVERDEPTH AND SIDE SLOPES

1.19.1 Overdepth Dredging

1.19.2 Side slopes

1.19.3 Excessive Dredging

1.20 PERMITS

1.21 ENVIRONMENTAL PROTECTION REQUIREMENTS

1.22 BASIS FOR BIDS

PART 2 PRODUCTS

2.1 DREDGING EQUIPMENT

2.2 OTHER EQUIPMENT

PART 3 EXECUTION

3.1 DREDGING

3.2 OBSTRUCTIONS

SECTION 35 20 23 Page 1

AMD#0002 - 09/08/21

3.3 INSPECTION

3.4 CONDUCT OF DREDGING WORK

3.4.1 Order of Work

3.4.2 Dredging Sites

3.4.3 Lights

3.4.4 Ranges, Gauges, and Lines

3.4.5 Plant

3.4.6 Placement of Dredged Material

3.4.6.1 General

3.4.6.2 Government Furnished Placement Areas

3.4.6.2.1 Transfer Site

3.4.6.2.2 Provisions and Maintenance of Haul Roads

3.4.6.2.3 Vehicular Conveyance

3.4.6.2.4 Trees, Brush, Vegetation and Debris

3.4.6.2.5 Operation of Sluiceways/Weirs

3.4.6.3 Method of Placement

3.4.6.4 Placement in Indicated Placement Areas

3.4.6.4.1 Sturgeon Bay Utilities Placement Site

3.4.6.4.2 Charges for Material Placement

3.4.6.5 Misplaced Material

3.4.7 Unloading of Scows

3.4.8 Condition of Scows, Hoppers, and Pipelines

3.4.9 Navigation Warnings

3.4.10 Salvaged Material

3.4.11 Safety of Structures

3.4.12 Plant Removal

3.5 CONTRACTOR QUALITY CONTROL

3.6 GOVERNMENT INSPECTION

3.6.1 Gauge Maintenance

3.6.2 Facilities

3.6.3 Transportation

3.6.4 Compliance

3.7 MEASUREMENT

3.7.1 Method of Measurement

3.7.2 Government Utilization of Multi-beam and Single Beam Sounders for Quantity and Clearance Surveys

3.8 FINAL EXAMINATION AND ACCEPTANCE

3.8.1 Examination

3.8.2 Acceptance

-- End of Section Table of Contents --

SECTION 35 20 23 Page 2

SECTION 35 20 23

DREDGING

04/06

PART 1 GENERAL

1.1 SCOPE

The work covered under this section includes furnishing all plant, labor, and equipment, required for dredging. This section also covers transportation and placement of all dredged materials from Sturgeon Bay Federal Channel to the proposed depths, elevations, and side slopes shown on the drawings. The dredged material shall be transported and deposited at Sturgeon Bay Utilities Placement Site in the specified areas shown on the drawings. See Section 01 57 20.03 03 ENVIRONMENTAL PROTECTION FOR WISCONSIN for environmental protection and compliance requirements.

1.2 DEFINITIONS

1.2.1 Hard Material

Hard material is defined as material requiring the use of special equipment for economical removal, and includes boulders or fragments too large to be removed in one piece by the dredge. The Government does not define stiff clay as a hard material.

1.2.2 Dredging Limits

The dredging limits are shown on the drawings. As required, these limits will be adjusted when the pre-dredge soundings are conducted.

1.2.3 Required Dredging Prism Depth

Synonymous with dredging depth.

1.2.4 Required Dredging Prism Line

Synonymous with dredging depth with side and end slopes of 1 vertical on 2 horizontal.

1.2.5 Required Dredging Prism

All materials lying within the dredging limits and between the existing bottom surface and the required dredging prism line.

1.2.6 Allowable Dredging Prism Line

One foot below the required dredging prism line with one vertical on two horizontal side and end slopes.

1.2.7 Allowable Dredging Prism Depth

Synonymous with allowable dredging prism line.

SECTION 35 20 23 Page 3

1.2.8 Allowable Dredging Prism

Allowable dredging prism is defined as the volume of material between the required dredging prism and the allowable dredging prism line. There is a one foot allowable dredging prism directly below the required dredging prism for areas within the specified work limits that have material above the dredging depth. Areas with no required dredging do not have an allowable dredging prism.

1.3 REFERENCES

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

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 1110-2-1003 (2013) Engineering and Design -- Hydrographic Surveying Manual

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

Sounding Equipment Description and Calibration Data

Other Equipment

Utility Plan ; G, AOF

Dredging, Conveyance and Placement Plan ; G, AOF, DH

Dredging Placement Safety Plan ; G, AOF

Notice Of Start Of Dredging ; G, AOF

SD-03 Product Data

Dredging Equipment ; G, AOF

SD-06 Test Reports

Daily Report of Dredging Operations ; G, AOF

Soundings ; G, AOF

SD-11 Closeout Submittals

Material Placement Records

1.5 MATERIAL TO BE REMOVED

At the Sturgeon Bay project site, the material within the required

SECTION 35 20 23 Page 4 dredging prism consists primarily of material that has shoaled since the last time the area was dredged. Shoaled material contains primarily sand with varying amounts of silt, clay and trace organics. Native material may be encountered in the overdepth prism, and consists of hard clay and silt with trace amounts of sand and gravel.

The records of previous dredging and sampling are available upon request from the COR (Contracting Officer's Representative).

1.5.1 Hard Material

The removal of hard material is not included. 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.

1.6 SOUNDING EQUIPMENT DESCRIPTION AND CALIBRATION DATA

Verification that the Contractor's sounding equipment has been calibrated to correspond with the Government's Hydrographic Surveying Manual EM 1110-2-1003 , sounding equipment shall be submitted prior to commencing work. Submit the description of the Contractor's sounding equipment and transducer frequency prior to commencing work.

1.7 UTILITY PLAN

General locations of applicable existing utilities based upon latest information available to the Government are shown on the drawings.

However, it is the Contractor's obligation to establish the exact horizontal and vertical location and size of all existing utility lines including pipelines and other submerged utilities which are located within the required work area. The Contractor shall submit a utility locating plan for locating exiting utilities and a copy of its utility location findings prior to commencing work on the site. Any utility lines which are not found by the Contractor, but which are known to exist at the project site, shall be reported to the Contracting Officer immediately.

The Contracting Officer will have the option of directing commencement of work at the site or requiring the Contractor to submit further plans for locating the utility lines. If the Contractor damages any existing utility line, a report thereof shall be made immediately to the Contracting Officer. In any event, existing utility lines, shall be protected from damage, and if damaged, shall be repaired by the Contractor at its own expense.

1.8 DREDGING DEPTH

The dredging depth is minus 22 Low Water Datum (LWD) in Sturgeon Bay Harbor with one foot over dredge depth. All dredging locations for this contract are located at Sturgeon Bay Harbor.

1.9 DREDGING, CONVEYANCE AND PLACEMENT PLAN

Prior to bringing equipment to the project site, submit a Dredging, Conveyance and Placement Plan (DCPP) no later than 30 calendar days prior to the start of dredging. The DCPP must include but is not limited to the following information: Equipment to be used for dredging and the methods of loading the barge or scow and placing the dredged material must be

SECTION 35 20 23 Page 5 described. The DCPP must include Best Management Practices (BMPs) for minimizing the resuspension of sediment. The DCPP shall include a traffic control plan for the conveyance and placement operations; figures showing haul routes and equipment staging locations must be provided, as part of a traffic control plan. The means and methods of conveyance and placement operations must be thoroughly described, including equipment. The DCPP shall specifically address how spillage of dredged materials will be prevented including methods of containing and capturing any spillage during transport, rehandling, and placement. The DCPP must specifically address all conditions and requirements for the placement site stated in the Conditional Low-Hazard Waste Disposal Grant of Exemption for the site, which is Attachment A of Section 01 57 20.

1.10 DAILY REPORT OF DREDGING OPERATIONS

Report of Operations forms (ENG FORM 4267 or ENG FORM 27A), as appropriate to the type of work being performed, are in Quality Control System/Resident Management System (QCS/RMS) and shall be completed and furnished daily. Each report shall contain in the "REMARKS" space attesting that no overflow or discharge occurred from the dredging vessel(s) while dredging and while in transit from the dredging area to the unloading area. In the event an overflow or discharge occurs while dredging or while in transit, an oral notification shall not be made, and complete written report on the incident shall be made to the Contracting Officer in shortest possible time. When appropriate and approved, quality control compliance inspections may be reported under the "REMARKS" item on the form in RMS.

1.11 PLACEMENT AREA CONDITIONS

The specific limits of the placement area are shown on the drawings.

Dredged materials placed outside of the limits of the placement area shall be removed at no additional cost to the Government and deposited within the area approved for placement of dredged materials.

1.12 DELIVERY OF PLANT AND ORDER OF WORK

Prior to bringing equipment to the project site, the contractor shall submit a DCPP describing in detail how it plans to accomplish the work within the required period of performance.

1.13 ARTIFICIAL OBSTRUCTIONS

The Government has no knowledge of existing wrecks, wreckage, or other material of such size or character as to require the use of explosives or special or additional plant for its economical removal. Prior to dredging, the Contractor shall rake the dredge areas and shall remove debris encountered. 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. In case the actual conditions differ from those stated or shown, or both, an adjustment in contract price or time of completion, or both, will be made in accordance with FAR 52.236-2 Differing Site Conditions. Disposal should be in accordance with the requirements of the section ENVIRONMENTAL

PROTECTION FOR WISCONSIN 01 57 20.03 03 .

1.14 SHOAL REMOVAL

If, before the work is completed, shoaling occurs in any section

SECTION 35 20 23 Page 6 previously accepted by the Government, including shoaling in the finished channel, because of the natural lowering of the side slopes or other natural causes, redredging at the Contract unit price, within the limit of available funds, may be performed if agreed upon by both the Contractor and the Contracting Officer.

1.15 SOUNDINGS

The drawings represent the conditions existing at the time of survey.

Determination of quantities removed will be made from prior and after dredging soundings taken by the government and the calculations made there from to determine quantities by in-place measurement. After the government has made a determination of the quantities to be paid, it will not reopen except on evidence of collusion, fraud, or obvious error.

1.16 VOLUME CALCULATIONS

In project areas surveyed using single-beam sonar, the volume of material removed shall be calculated using the average end area method. The HYPACK software Philadelphia Pre Dredge and Post Dredge volume calculation method shall be used for all single-beam volume computations.

In project areas surveyed using multi-beam sonar, the volume of material removed will be computed using a TIN (Triangulated Irregular Network) model as outlined in the Hydrographic Surveying Manual EM-1110-2-1003, dated November 30, 2013. The HYPACK software TIN model Philadelphia volume calculation method will be used for all multi-beam volume computations. A 1-foot by 1-foot matrix using average depth sounding will be generated from the edited multi-beam data to perform the TIN volume computations. The corresponding plotted sounding sheets will be generated using plot-scale dependent matrix cell utilizing the minimum depth from the 1x1 Average dataset used to calculate volumes.

All plots of soundings provided to the Contractor during administration of this contract shall be a graphical representation only and shall NOT be used for volume calculations. All survey data used for volume computations shall be available to the Contractor upon request.

Surveys shall extend a minimum of 150 feet or three cross sections upstream and downstream of the defined project area where allowable. The extended survey outside the project area will be used to calculate the possible amount of infill material or shoaling that could occur from areas outside of the contract area.

1.17 MONTHLY PARTIAL PAYMENTS

Monthly partial payments will be based on quantities determined by daily soundings taken by the Contractor or other means acceptable to the Contracting Officer. (See CLAUSE 52.236-16 entitled, "QUANTITY SURVEYS".)

Sounding surveys for partial payment shall be conducted in the same manner specified in the Paragraph entitled "PRIOR, AFTER, AND QUANTITY SURVEYS" in Section 01 10 00 GENERAL PROVISIONS, unless otherwise authorized or directed.

1.18 CONTINUITY OF WORK

Monthly partial payments will be made for work performed prior to final examination and acceptance. However, as final dredging is being performed for final examination and acceptance, no payment will be made for such

SECTION 35 20 23 Page 7 final dredging work performed in any area until the depth required under the contract is secured in the whole of such area, unless prevented by ledge rock, original material, or other obstructions, which cannot be removed by the plant specified in the accepted bid, or the equivalent of such plant, without blasting or special apparatus. No payment will be made for final excavation in any area not adjacent to and in prolongation of areas where full depth has been secured, except by decision of the Contracting Officer. If a nonadjacent area is excavated to full depth during the day to day operations carried on under the contract, payment for all work therein may be deferred until the required depth has been secured in the area intervening.

1.19 ALLOWABLE PAY OVERDEPTH AND SIDE SLOPES

The total estimated dredging quantity shown on the Price Schedule includes only the required depth material, not the allowable overdepth material and allowable side slope material. The allowable pay overdepth quantity is computed for the allowable overdepth prism immediately below the material required to be dredged.

1.19.1 Overdepth Dredging

To cover inaccuracies of the dredging process, materials actually removed from within the channel lines to a depth of not more than one foot below the required dredging prism line will be measured and paid for at the contract unit price. However, the maximum quantity of overdepth materials to be paid for will be equivalent to that quantity present within the one foot overdepth prism immediately below the required materials to be removed as determined from the prior to dredging soundings. Any dredging below the allowed one foot will be considered as excessive dredging.

1.19.2 Side slopes

Materials actually removed, within limits shown on the drawings, to provide for final side slopes not flatter than one vertical on two horizontal, perpendicular to the channel line or dredge limit line, whichever is applicable, but not in excess of the amount originally lying below the side slope allowable dredging prism line will be calculated and paid for. The provisions of this Subparagraph also apply to end slopes at the upstream and downstream dredging limits of the channel.

1.19.3 Excessive Dredging

Any material removed below the overdepth allowance will be considered excessive dredging and will not be paid for. Materials taken from beyond the limits specified in Subparagraphs "Allowable Pay Overdepth" and "Side Slopes", will be excluded from the computed total amount dredged as excessive channel dredging or excessive side slope dredging and for which payment will not be made. The final determination of the amounts of excessive dredging will be based wholly on the surveys made for final examination and acceptance. See Paragraph entitled "FINAL EXAMINATION AND

ACCEPTANCE".

1.20 PERMITS

The Contractor shall comply with conditions and requirements of the Corps of Engineers Permits and real estate instruments, and other State or Federal permitting requirements (see section ENVIRONMENTAL PROTECTION FOR WISCONSIN 01 57 20.03 03 for Government acquired permits. Permits and

SECTION 35 20 23 Page 8 real estate instruments for dredging and placement of material are attached as indicated. The Contractor is responsible for obtaining any additional permits as necessary to perform the work.

1.21 ENVIRONMENTAL PROTECTION REQUIREMENTS

Refer to the section ENVIRONMENTAL PROTECTION FOR WISCONSIN 01 57 20.03 03 for requirements.

1.22 BASIS FOR BIDS

Base bids on the quantity of dredging indicated. Should the total quantity of dredging vary from that specified as the basis for bidding, the contract price will be adjusted in accordance with FAR 52.243-4 Changes. The dredging conditions specified and indicated describe conditions which are known. However, the Contractor is responsible for other conditions encountered which are not unusual when compared to the conditions recognized in the dredging business as usual in dredging activities such as those required under this contract.

PART 2 PRODUCTS

2.1 DREDGING EQUIPMENT

Equipment(s) used for dredging, transport and deposition of material shall be provided by the Contractor. Hydrosurvey capability using electronic positioning and sounding equipment must be used while meeting the requirements, Paragraph "Prior, After, and Quantity Survey" of Section 01 10 00 GENERAL PROVISIONS and in accordance to EM 1110-2-1003 .

2.2 OTHER EQUIPMENT

Provide all other equipment, operators, labor, materials, fuel and incidentals necessary to complete all mobilization, dredging, and demobilization to complete this project.

Submit all other equipment specifications and operating parameters for review and approval by the Contracting Officer prior to Mobilization. No additional compensation shall be considered if alternative equipment is allowed.

PART 3 EXECUTION

3.1 DREDGING

Thirty (30) calendar days prior to any dredging work being performed the contractor shall provide written notice of start of dredging to the Contracting Officer so that the Government can schedule and perform prior soundings. The Contractor shall perform all dredging work to remove material to the required depths within the limits shown on the drawings as specified. Any materials in the allowable overdepth prism and allowable side slopes are not required to be removed. Rocks, cobbles ( three inches to 12 inches ) and boulders (over 12 inch ) may be encountered near breakwaters, revetments and pier heads and shall not be removed if they are part of the harbor structures nor shall toe stones be undermined.

Indicated required dredging areas within required downstream and upstream dredging limits will be revised by the Government, after obtaining the before (prior to) dredging soundings. The Contractor may be required to suspend dredging at any time when for any reason the gauges or ranges

SECTION 35 20 23 Page 9 cannot be seen or properly followed.

3.2 OBSTRUCTIONS

Should original material, ledge rock, boulders, cobbles, rock fragments, wrecks, scrap materials, snags, stumps, piles, debris or other material be encountered which cannot be removed by the plant specified in the accepted bid, or equivalent plant, without blasting or special apparatus, the Contractor shall remove therefrom all overlying material within the required dredging prism which in the judgment of the Contracting Officer can be removed by the use of the plant specified in the accepted bid or equivalent plant.

3.3 INSPECTION

Inspect the work, keep records of work performed, and ensure that gauges, 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 placement area and between the dredging plant and adjacent points on shore.

3.4 CONDUCT OF DREDGING WORK

3.4.1 Order of Work

The Contracting Officer will direct the Contractor on the order of work.

The Government reserves the right to change the order of work at any time.

3.4.2 Dredging Sites

The dredging sites are within Sturgeon Bay Harbor. The Contractor must dredge the areas shown in the drawings. No dredging may occur where permits have not been acquired. Remove material from the sites until the contract line items quantities are obtained. The Government reserves the right to change the order of work at any time.

3.4.3 Lights

Each night, between sunset and sunrise and during periods of restricted visibility, provide lights for floating plants, pipelines, ranges, and markers. 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.

3.4.4 Ranges, Gauges, and Lines

Furnish, set, and maintain ranges, buoys, and markers needed to define the work and to facilitate inspection. Establish and maintain gauges in locations observable from each part of the work so that the depth may be determined. Suspend dredging when the gauges 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, gauges, and buoys.

SECTION 35 20 23 Page 10

3.4.5 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.

3.4.6 Placement of Dredged Material

3.4.6.1 General

All nautical vessels, pipelines and land based transport and conveyance systems shall be operated, loaded and unloaded in such manner as to prevent overflow, spills, leaks, waste, or other loss of dredged materials between point of pick-up and point of deposition within the placement area. Hauling vessels shall have sufficient sidewall height and integrity to prevent drainage over or through the sides and bottom during hauling.

Overflowing the barge or allowing drainage through the sides or bottom during dredging or hauling is strictly prohibited.

3.4.6.2 Government Furnished Placement Areas

The dredged material from the Federal Channel shall be transported and placed in the Government-furnished off-loading area(s) as specified in the plans. The dredged materials shall be off-loaded onto trucks for hauling to the designated placement area and distributed in the placement site(s) within the area(s) shown on the drawings, the quantity to be placed in any site will be synonymous with the quantity awarded in the bid schedule.

The specific limits of the placement area are shown with the drawings. No materials are allowed to be stockpiled at the off-loading location or outside the placement area. Dredged materials placed outside of the limits of the placement area shall be removed at no additional cost to the Government and deposited within the area approved for placement of dredged materials. Before placement operations commence, the Contractor shall survey the placement area to delineate and mark its limits. Comply with rules and regulations of local port and harbor governing authorities and conform to all requirements given in Section 01 57 20.03 03 ENVIRONMENTAL

PROTECTION FOR WISCONSIN.

3.4.6.2.1 Transfer Site

A facility for access to the river's edge and placement of equipment for transferring dredged materials from scows or other marine hauling equipment to land hauling equipment is provided by the Government at the location shown on the contract drawings.

Use of this facility shall be coordinated with others who may be performing work in the area. All contractors shall be confined to the area delineated on the plans.

Loading limits for the offloading site steel sheet piles walls (SSP) are 250 psf.

The Contractor shall repair any part of the transfer site that gets damaged or destroyed by the Contractor's operations under this contract.

All haul routes, gravel road surface and stone protection shall be restored to original condition. Any guardrails and/or other items that are removed from the site during the offload activities shall be reinstalled.

SECTION 35 20 23 Page 11

Hauling routes and procedures shall be coordinated with the COR. If the Contractor uses this transfer facility, the Contractor shall, every two

(2) weeks through completion of all transfer operations, take soundings throughout the length and breadth of the transfer site within 30 feet into the river from the transfer site wall and shall remove all materials, within these limits, which exist above the sounding elevations taken by the contractor prior to use of the facility. Kewaunee Resident Office will verify the contractor’s soundings on a bi-weekly basis. The quantity removed is excluded from the quantity measured for payment.

3.4.6.2.2 Provisions and Maintenance of Haul Roads

Other than for public roadways, the Contractor shall provide its own haul roads into the Government-furnished placement facility as required for its operations and shall maintain them throughout the course of the work. If existing vehicle paths are used (which are not dedicated as public roadways) the Contractor shall provide any improvements required to support its vehicle traffic and shall maintain such haul roads in a condition satisfactory for travel in a passenger automobile at all times, including at the completion of the contract.

3.4.6.2.3 Vehicular Conveyance

Dredged materials that are conveyed into a placement area via vehicle shall have leak tight cargo bodies or compartments with spill and splash preventing devices as well as necessary sidewall height. Vehicles shall not be loaded over their capacity, nor shall any loads exceed the limits of the thoroughfare over which the vehicles are operated. If the dredged materials are transferred from vessels to vehicles by bucket type equipment or any device which may leak or spill, provisions shall be made to prevent water and materials from escaping into the waterways. In addition, the Contractor shall insure that materials that are splashed around vehicles during loading or unloading operations are cleaned up prior to the vehicle leaving the site so as to prevent materials from being tracked on to public thoroughfares or escaping into the waterways.

The Contractor shall immediately clean up any materials spilled on the public thoroughfares. In addition, the Contractor shall maintain the transfer site in a neat and orderly condition.

3.4.6.2.4 Trees, Brush, Vegetation and Debris

The Government-furnished placement area may be overgrown with trees, brush and other vegetation. Except as indicated in the drawings, the Contractor may cut down and cover such trees, brush and vegetation within the placement area as may be necessary for its placement operation and to facilitate flow toward the weirs. Trees, brush, vegetation and debris shall be buried within the CDF as directed by the Contracting Officers Representative.

3.4.6.2.5 Operation of Sluiceways/Weirs

Sluiceways/Weirs on the placement area levees will be operated and maintained by the Contractor.

3.4.6.3 Method of Placement

The method employed by the Contractor in conveying dredged materials to the placement area shall be as approved by the Contracting Officer at all

SECTION 35 20 23 Page 12 times. Temporary dumping or placement of materials outside of the placement area for subsequent rehandling into the placement area is prohibited unless otherwise approved by the Contracting Officer. The Contractor's method of conveying dredged materials and the placement of dredged materials may not at any time block the navigation channel nor impede traffic near the harbor.

Submit Material Placement Records to COR. The records must include the following documentation: maps showing hte dredge locations, including control points with latitude/longitude showing the limits of the dredging area; final bathymetric surveys for the dredge cut; dredging dates and quantities dredged; placement location at disposal site with figures as needed to indicate the placement location(s).

3.4.6.4 Placement in Indicated Placement Areas

Prior to placement of dredge material, the Contractor will submit a Dredging Placement Safety Plan , describing in detail the means and methods to be utilized to provide for the public safety at the placement area, all in accordance with the Accident Prevention Plan. The dredged materials shall be deposited within the Government-furnished placement area shown on the drawings. The Government-furnished placement area has sufficient capacity to contain all materials to be dredged under the contract.

Placement of the dredged materials within the placement area shall be as specified and shown except as otherwise directed by the Contracting Officer. Except as otherwise authorized by the Contracting Officer in writing, no placement shall be performed unless a representative of the Contractor for Quality Control is present at the time. The method employed by the Contractor in depositing dredged materials in the placement area shall be as approved by the Contracting Officer at all times.

3.4.6.4.1 Sturgeon Bay Utilities Placement Site

All material shall be mechanically placed into Sturgeon Bay Utilities Placement Site as shown on the contract drawings and shall be coordinated with the Contract Officer Representative (COR) prior to placement. The ability of existing materials within the placement site to support equipment and personnel is unknown. The contractor shall make its own investigations of existing conditions as it deems necessary.

Preparatory site work is required at the placement area. The placement area to the north of the central dumping pad is designated for silt/fines. The area to the south of the central dumping pad is designated for sand. The contractor must make an effort, with low ground pressure equipment if necessary, to clear vegetation and move existing sediment to establish capacity for the dredge material to flow while maintaining required freeboard at the outer berms. If existing sediment proves to be unsuitable for operating low ground pressure equipment on, alternate plans may be coordinated with Sturgeon Bay Utilities and the government. If the north area reached capacity, then the south area may be used.

The Contractor shall remove any vegetation, construct berms, stack material, modify operations and take other actions as necessary to contain the dredged materials within the limits of the placement area. The maximum height of placed material at the Sturgeon Bay Utilities Placement Site is one foot below the top of the existing berms.

SECTION 35 20 23 Page 13

The Contractor shall be required to control objectionable dust in the access roadways and haul roads. Dust control methods and procedures must be approved by the Contracting Officer. Treat dust abatement on access roads with applications of calcium chloride, water sprinklers, or similar methods or treatment.

A mandatory site meeting will be held with the government, the government's contractor, and Sturgeon Bay Utilities prior to placement of material to review the project and site use requirements, and a similar post project meeting will be held to ensure that the site is left in good condition for the next project.

3.4.6.4.2 Charges for Material Placement

a) General. The Contractor is responsible for payment of charges imposed by Surgeon Bay Utilities for placement of material in the Placement Site.

As of the date of this solicitation, the current charge is $4.00 per cubic yard.

b) Payment: Payments shall be made to Sturgeon Bay Utilities at the following location:Sturgeon Bay Utilities Attn: Mr. Cliff White P.O. Box 27 Sturgeon Bay, WI 54235-0027

3.4.6.5 Misplaced Material

Any material that is deposited elsewhere than in the places designated or approved by the Contracting Officer will not be paid for. The Contractor shall be required to remove at its own expense and deposit it in the place designated on drawings or as approved by the Contracting Officer.

3.4.7 Unloading of Scows

When scow unloading is performed with the use of a clamshell or bucket, the placement area enclosure shall be returned to its original condition by removing all material deposited thereon to the satisfaction of the Contracting Officer. Dredged materials may not be stockpiled at the off-loading site.

3.4.8 Condition of Scows, Hoppers, and Pipelines

All scows and hoppers used for transporting the dredged material shall be kept in good condition with coamings in repair. Doors of dump vessels shall be maintained in good repair and sealed in a proper manner to prevent the loss of dredged material. Decks of vessels shall be cleaned of dredged material before leaving the dredging area. Pipelines in hydraulic dredging systems shall be kept in good condition, free of leaks.

3.4.9 Navigation Warnings

Furnish and maintain navigation warning signs along the pipeline.

3.4.10 Salvaged Material

Anchors, chains, firearms, and other articles of value, which are brought to the surface during dredging operations, must become the property of the Contractor. Contractor may keep said items or dispose of them in accordance with State of Wisconsin regulations.

SECTION 35 20 23 Page 14

3.4.11 Safety of Structures

The prosecution of work shall ensure the stability of piers, bulkheads, and other structures lying on or adjacent to the site of the work, insofar as structures may be jeopardized by dredging operations. Repair damage resulting from dredging operations, insofar as such damage may be caused by variation in locations or depth of dredging, or both, from that indicated or permitted under the contract.

3.4.12 Plant Removal

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

3.5 CONTRACTOR QUALITY CONTROL

The Contractor shall establish and maintain a quality control system for dredging and placement operations to assure compliance with the Contract requirements and provide a Daily Report of Dredging Operations by completing the appropriate form and completing all inspections of items under this system, including, but not limited to, the following:

a. Layout of work, and placement areas;

b. Proper dredging depths and placement heights;

c. Conveyance and placement operations;

d. Removal of misplaced material; and

e. Safety requirements.

3.6 GOVERNMENT INSPECTION

3.6.1 Gauge Maintenance

The Contractor shall maintain its gauges, ranges, location marks and limit marks in proper order and position. The presence of a Government inspector shall not relieve the Contractor of its responsibility for the proper execution of the work in accordance with the specifications and drawings.

3.6.2 Facilities

The Contractor shall furnish, on the request of the Contracting Officer or any inspector, the use of such boats, boat operators, laborers and material forming a part of the ordinary and usual equipment and crew of the dredging plant as may be reasonably necessary in inspecting the work.

However, the Contractor will not be required to furnish such facilities for the surveys prescribed in the Paragraph "FINAL EXAMINATION AND

ACCEPTANCE".

3.6.3 Transportation

The Contractor shall furnish, on the request of the Contracting Officer or any inspector, suitable transportation from designated points on shore to and from the various pieces of off-shore plant and off-shore placement areas.

SECTION 35 20 23 Page 15

3.6.4 Compliance

Should the Contractor refuse, neglect, or delay compliance with these requirements, the specific facilities may be furnished and maintained by the Contracting Officer, and the cost thereof will be deducted from any amounts due or to become due the Contractor.

3.7 MEASUREMENT

The material removed will be measured by cubic yard in place, by means of soundings taken before and after dredging. Prior, after and check surveys will be made by sonic sounding methods. The Government will make prior and after surveys and may make check surveys. The Contractor shall make check surveys. Additional soundings will be taken as the Contracting Officer may deem necessary. Only one prior survey will be made for work required under each contract, by the Government. If additional prior surveys are required, due to the Contractor's operations, the cost of such surveys shall be paid by the Contractor. The cost of such surveys shall be the same as specified in the Paragraph entitled, "FINAL EXAMINATION AND ACCEPTANCE". Submit soundings survey data used for cost to the Contracting Officer.

3.7.1 Method of Measurement

Hydrographic Surveys will be conducted to meet USACE Performance Standards as defined in the Hydrographic Surveying Manual EM 1110-2-1003 . Surveys will be performed by multi-beam sweep type surveys and by single beam sounding equipment. The multi-beam sonar and the single beam sonar will be calibrated following procedures outlined in the aforementioned Engineering Manual. The same equipment shall be used for priors and after surveys, using the same work platform.

3.7.2 Government Utilization of Multi-beam and Single Beam Sounders for Quantity and Clearance Surveys

The Government may elect to use either Multi-beam or Single beam sounding surveys. The same type of survey used for a prior survey shall be used for the after surveys and dredge material removed shall be based off Government Prior and After Surveys.

3.8 FINAL EXAMINATION AND ACCEPTANCE

3.8.1 Examination

As soon as practicable after the completion of the entire work or any section thereof (if the work is divided into sections) as in the opinion of the Contracting Officer will not be subject to damage by further operations under the contract, such work will be thoroughly examined at the cost and expense of the Government by sounding or by sweeping, or both, as determined by the Contracting Officer. Should any shoals, lumps or other lack of contract depth be disclosed by this examination, the Contractor is required to remove same by dragging the bottom or by dredging at the contract rate for dredging, but if the bottom is soft and the shoal areas are small and form no material obstruction to navigation, the removal of such shoals may be waived at the discretion of the Contracting Officer. The Contractor or its authorized representative will be notified when soundings and/or sweepings are to be made, and will be permitted to accompany the survey party. When the area is found to be in

SECTION 35 20 23 Page 16 a satisfactory condition, it will be accepted finally. Should more than two sounding 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 at the rate of $3,500 per calendar day in which the Government plant is engaged in sounding or sweeping and/or is enroute to or from the site or held at or near the said site for such operations.

3.8.2 Acceptance

Final acceptance of the whole or part of the work and the deductions or corrections of deductions made thereon will not be reopened after having once been made, except on evidence of collusion, fraud, or obvious error, and the acceptance of a completed section shall not change the time of payment of the retained percentages of the whole or any part of the work.

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SECTION 35 20 23 Page 17

3.4.6.5 Misplaced Material