W912BU23B0009- Amendment 0003 AM0003-Specs.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

The purpose of Amendment 0003 is to advise potential bidders of changes to the technical specifications. The technical change is identif ied as W912BU23B0009-AM0003-Specs. All other Terms and Conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

J 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 W912BU23B0009

X 9B. DATED (SEE ITEM 11)

19-Jul-2023

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

18-Aug-2023

CODE

U.S. ARMY CORPS AND ENGINEERS - PHILA

1650 ARCH STREET

PHILADELPHIA PA 19103

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

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912BU23B0009

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

(End of Summary of Changes)

Amendment No. 0003

IFB W912BU23B0009

14. DESCRIPTION OF AMENDMENT (continued)

a. TECHNICAL SPECIFICATIONS:

(1) SECTION 35 31 00 – BEACHFILL: Please delete this section in its entirety and substitute the revised Section 35 31 00, annotated as

Amendment No. 0003, attached hereto.

b. Please indicate receipt of this amendment on Standard Form 1442

(SOLICITATION, OFFER, AND AWARD) as Amendment No. 0003. Failure to acknowledge all amendments may be cause for rejection of the bid.

This page was intentionally left blank for duplex printing.

SECTION 35 31 00

BEACHFILL

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 removal of the satisfactory beachfill material from the borrow area located offshore, as shown on the drawings, and placing the material on the beach within the limits as specified and shown on the drawings.

1.2 REFERENCES

The publications listed below form a part of this section to the extent referenced:

ASTM INTERNATIONAL (ASTM)

ASTM D422 (1963; R 2007; E 2014; E 2014)

Particle-Size Analysis of Soils

ASTM D2487 (2017; E 2020) Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System)

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. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

33 CFR 156 (2003) Navigation and Navigable Waters, Oil and Hazardous Material Transfer Operations

1.3 SUBMITTALS

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

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

SD-01 Preconstruction Submittals

Borrow Area; G,COR.

Submit a map of the borrow area, plotted to scale, with the Contractor-assigned stationing and range information, furnished in printed form and the following 3 electronic formats: (1) either ESRI ArcGIS 10.x Shapefile format (.shp), including all components and extensions, or in a Spatial Data Standard compliant

Section 35 31 00 Page 1 geodatabase; (2) Portable Document Format (PDF) files containing PDF layer maps; and (3) electronic drawings in AutoCAD version 2019 or later.

Debris Prevention Plan; G,COR.

Devise a means and a monitoring program/method to ensure that debris (boulders, cobbles, clay balls, and other debris) is not deposited upon the beach and buried by beachfill material, and submit proposed program/method for approval.

Work Plan; G,COR.

The Contractor shall submit to the Contracting Officer for approval prior to the start of work its plan for removing the material from the borrow area and placing it in the areas shown on the contract drawings. The plan shall show the pipeline layout, details of ramps over the pipeline, safety fence locations, personnel to be used to patrol closed beach area, signage and shall include the surveying procedures, methods, and equipment for topographic surveys, hydrographic surveys, and tidal monitoring, as specified in Section 01 71 23 SURVEY REQUIREMENTS.

Additionally, the plan shall address the safe working wave height limits for daily work procedures for the survey vessels, swimmer, and the dredge.

Pumpout Plan; G,COR

If a hopper dredge is used for the contract work, submit a plan for pumpout of excavated material from the dredge to the beachfill area. The plan shall include the description, dimensions, and location of the proposed mooring facility.

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. The vessel and equipment list shall contain the types, the numbers of each, the draft of each, and all other pertinent information. Include the capacity of all scows in the equipment list. List the survey vessel, survey crew, type of survey equipment, and software that may be used.

Grade Stake Recovery Plan; G,COR.

Submit a plan describing his procedures that will be used to ensure that all grade stakes placed on the beach during construction are subsequently removed. Grade stake removals and lost stakes reports shall be included along with the Quality Control Report.

SD-06 Test Reports

Daily Report of Operations; G,COR

Prepare, maintain, and submit daily for approval, Daily Report of Operations forms, and shall furnish signed copies thereof with the Quality Control Reports required in SECTION 01 45 00 QUALITY CONTROL, to the Contracting Officer. Daily Report of Operations

Section 35 31 00 Page 2 forms shall be faxed daily to the U.S. COE Philadelphia District Office. Copies of the Daily Report of Operations form to be used are attached at the end of this section. Submittals for the Daily Report of Operations are available to the public.

Test Reports; G,COR.

Copies of all laboratory and field test reports shall be submitted to the Contracting Officer within one week after completion of each test.

Daily Dredgehead Positioning Records; G,COR

For all dredging and for each dredge employed under this Contract, utilize a computerized positioning system capable of representing the horizontal and vertical position of the hopper draghead, clamshell bucket, and/or hydraulic cutterhead at any given time throughout the dredging cycle. Record horizontal and vertical positioning of the draghead or cutterhead at intervals not greater than one minute in duration. Submit horizontal and vertical (x,y,z) positions of the dredge draghead, bucket, or cutterhead, 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 or cutterhead, in a continual display and in a submittal satisfactory to the COR. Submit this information daily at the same time as the Daily Operations Report.

SD-07 Certificates

DGPS Positioning

Daily submission of recorded dredge position data.

Dredge Position Map

After every 5 days of dredging, submit a map of the borrow area, to scale, with the Contractor-assigned stationing and range information, along with the draghead or cutterhead positioning data indicating the location of the dredge and the time period associated with a set of daily recorded positions, furnished in printed form and Portable Document Format (PDF) files containing PDF layer maps.

Fuel Usage

Submit on or before the last day of each month, a report listing the totals of fuels consumed by the dredging plant and supporting vessels. Separately list the quantities of each type of fuel used. The reports shall cover the period from the 25th of the preceding month to the 25th of the current month.

Adjusted Construction Template; G,DO

Documentation shall include the location, by range of survey baseline stations, for which the request is being made.

Section 35 31 00 Page 3

1.4 DREDGING RESTRICTIONS

Dredging of material will only be allowed from 1 September through 31 December.

1.5 DIFFERENTIAL GLOBAL POSITIONING SYSTEM (DGPS) EQUIPMENT

The Contractor must have a differential GPS, and shall conduct his survey work in accordance with the U.S. Army Corps of Engineers Hydrographic Surveying Manual EM 1110-2-1003. Provide real time positioning of the dredge on a computer screen, during dredging, and have the capability of playback in 15 minute intervals. Record DGPS positioning of the dredge on a disk every 15 minutes and submit to the Contracting Officer on a daily basis. Submit 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.

1.6 LOCATION AND CHARACTER OF BORROW MATERIAL

1.6.1 Character of Borrow Material

a. The character of the material in the offshore borrow area is believed to be as indicated by the results of Government-conducted sampling and analysis. Vibracore logs, and sieve curves are presented in Appendix B41 and B42, respectively. The locations of vibrational cores, from which samples were extracted are shown on the drawings. These locations are in or near the limits established by the drawings for the specified borrow area.

b. The information depicted on the vibrational core logs represents the results of subsurface explorations made on the dates indicated and can only be considered as conditions existing at that time and at the specific location where retrieved. Due to complex geologic conditions within the coastal environment, boulders, cobbles, gravel, silt and clay seams may be encountered as well as sand. The beachfill must be composed predominately of sand as defined by ASTM D2487-06. Boulders, cobbles and coarse gravel defined by the same designation are prohibited from being part of the beachfill. Fine gravel will be limited to less than 10 percent of the beachfill. Manmade materials are also prohibited from being part of the beachfill. No additional compensation will be provided, for routine moves of the dredge(s) within the limits of the borrow area shown; moves required to ensure compliance with these specification for beachfill content and/or to optimize production are routine.

c. Munitions and explosives of concern (MEC) may also be encountered in the borrow area. See Section 01 35 30 MUNITIONS AND EXPLOSIVES OF CONCERN (MEC) CONSTRUCTION SUPPORT for all requirements related to potentially encountering MEC in the borrow area.

1.6.2 Location of Borrow Area

The location of the borrow area and the limits to which removal of material is permitted is shown on the drawings.

1.6.2.1 Maximum Allowable Depth for Removal

The maximum allowable depth for removal of material from the borrow area are as indicated on the drawings. To cover the inaccuracies of the dredging

Section 35 31 00 Page 4 process, the Contractor may remove material in the borrow area to a depth of not more than 1 foot below the maximum allowable depth. Unless specifically directed by the Contracting Officer, no payment will be made for material removed from below the maximum allowable depth plus 1-foot overdepth, or from outside the borrow area limits, as indicated on the drawings.

If during the progress of the work it is determined that the borrow area does not contain a sufficient quantity of material for completion of the project, the Contracting Officer may adjust the maximum allowable depth of the borrow area. If this adjustment results in the pumping of undesirable material quality, the Contractor shall move to another location within the specified borrow area.

1.6.3 Nature of Borrow Area

The surveys of the borrow area shown on the drawings are the most recent survey available. The borrow area conditions are dynamic in nature.

Therefore the contours shown on the drawings may not be an accurate representation of the depths and conditions existing at the commencement of dredging operations under this contract.

1.6.4 Before- and After-Dredging Surveys

Before- and after- dredging surveys shall be conducted as specified in Section 01 71 23 SURVEY REQUIREMENTS.

1.6.5 Commercial Fishing Equipment

The Contractor shall be aware that there is a potential for commercial fishing equipment (ie. conch pots, black seabass pots, and commercial gill nets), marked by buoys, that could be deployed within the borrow area at the time of dredging. Exercise caution to avoid this gear to the maximum extent practicable. If the gear cannot be avoided, the Contractor may proceed at risk to his own equipment. The Corps of Engineers or the sponsor (DNREC) or both will attempt to notify the commercial fishermen of the dredging operations and have them remove their fishing equipment prior to dredging.

1.7 SITE CONDITIONS

Bidders are expected to examine the site of the work in accordance with Contract Clause: SITE INVESTIGATION AND CONDITIONS AFFECTING THE WORK to determine the conditions affecting their operations. The entire work site is designated as a hard hat area in accordance with EM 385-1-1. Access to the contractor staging area and beachfill site is available at the locations shown on the drawings. Throughout the dredging operations the Contractor shall maintain close coordination with the U.S. Coast Guard.

1.8 ENVIRONMENTAL RESTRICTIONS ON DREDGING AND BEACHFILL OPERATIONS

See Section 01 57 19 TEMPORARY ENVIRONMENTAL CONTROLS for the environmental window applicable for dredging in the borrow area and beachfill placement activities due to winter and summer flounder restrictions, and Piping Plover and Colonial Nesting Birds restrictions for beachfill operations, and archaeological monitoring requirements for historical, archaeological and cultural resources in the borrow area.

Section 35 31 00 Page 5

1.9 RESTRICTIONS ON BEACHFILL OPERATIONS

Close the beach, utilizing temporary fencing, barricades, and signage, in maximum 1000 foot sections, to allow placement of beachfill. After acceptance of a section, the Contractor will be permitted to advance the closed section of beach. All other sections of the beach, except staging areas, are to remain open to the general public. Ramps over the pipeline shall be provided at all street ends and at boardwalk entrances to the beach to allow public access to the ocean. The ramps shall be 6 feet wide (measured along the pipeline), with 3:1 slopes and one foot minimum of cover over the pipeline. Ensure that any movement of pipeline or equipment is conducted with recognition to the public presence, in accordance with the approved Accident Prevention Plan. All beach closings shall be coordinated with the Beach Patrol, Police and Fire Departments to ensure access by emergency vehicles.

1.10 DEDICATED PUBLIC SAFETY PERSONNEL

Provide a minimum of two public safety persons to patrol the perimeter of the closed beach area and direct the public to not enter the construction area. These dedicated public safety personnel shall be provided between 8:00 am and 5:00 pm, during active construction operations. Outside of these hours, one public safety person regardless of construction status.

Public safety personnel shall have no other duties.

1.11 DEBRIS PREVENTION

Propose, and submit for approval, a Debris Prevention Plan indicating the method to ensure that debris (either dredged from the borrow area or deposited by the Contractor's personnel) is not deposited upon the beach and buried by beachfill material. A proposed monitoring program shall be included, using the Contractor's personnel, to monitor the proposed debris-prevention method's results. Debris includes cobbles, clay balls, shells, and man-made trash and materials. Seashells captured in outlet baskets shall be deposited in debris containers and removed from the site.

1.12 FUEL OIL HANDLING

Ensure that all fuel oil transfer operations to or from his plant comply with all applicable Federal, State, and municipal laws, codes, and regulations. Incorporate in the accident prevention plan sufficient information to demonstrate compliance with 33 CFR 156 and all other applicable laws, codes, and regulations.

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION

All work shall be executed in accordance with the approved Work Plan, Pumpout Plan, and additional requirements specified herein.

3.1 EXISTING ITEMS AND DEBRIS REMOVAL

Remove existing sand fence and posts obstructing or impeding material placement and stockpile for reuse. Remove all other debris, including man-made trash and materials from the existing beach, prior to commencing work and dispose of offsite. Existing sand fence, visible debris or

Section 35 31 00 Page 6 miscellaneous items of any kind shall not be buried with the new beachfill. Sand fence or posts removed shall be salvaged and re-installed upon completion of beachfill operations. Replace sand fence and/or posts which are damaged during removal, storage, and re-installation of the salvaged sand fence and posts, or damaged during beachfill work, at no additional cost to the Government.

3.2 CONSTRUCTION BASELINE

See Section 01 71 23 SURVEY REQUIREMENTS for the requirement to establish and stake and flag a construction baseline.

3.3 PRE-PLACEMENT CONDITION SURVEYS

The beachfill area conditions are dynamic in nature. Conditions existing during the preparation of this contract may not be an accurate representation of the beachfill area conditions existing at the commencement of beachfill operations. Consequently, the Contractor shall obtain pre-placement condition survey cross sections, in accordance with Section 01 71 23 SURVEY REQUIREMENTS. Upon receipt of the pre-placement surveys as specified in Section 01 71 23 SURVEY REQUIREMENTS, the Government will issue revised drawings indicating adjusted beachfill locations, template and profiles/sections. Beachfill work in any location shall not commence until these surveys for that location have been submitted and approved, and revised drawings have been issued for that location.

3.4 POST-PLACEMENT CONDITION SURVEYS

Obtain post-placement condition survey cross sections, in accordance with Section 01 71 23 SURVEY REQUIREMENTS.

3.5 PLACEMENT OF BEACHFILL

3.5.1 General

Beachfill material shall be placed and shaped to the beachfill template lines, grades, slopes, and elevations shown on the drawings. There shall be no pronounced ridges or wash holes in the final grades and slopes unless otherwise indicated. Beachfill lines and grades shall extend linearly between payment sections with no scallops in planform contours.

Conduct work operations so that no areas landward of the work limits shown on the drawings are disturbed. Land-based equipment shall be used for grading the beachfill material.

If the Contractor stockpiles material and subsequently uses land-based equipment to move the material to its final position, the Contractor shall wait 24 hours before after-surveys are conducted of that area.

3.5.2 Template Quantity

The required template placement quantity of sand between survey lines will be determined by the average-end-area method using the difference incross-sectional area between (1) the profile surveys obtained by the Contractor before the beachfill operations in accordance with Section 01 71 23 SURVEY REQUIREMENTS and (2) the template lines shown on the drawings.

Section 35 31 00 Page 7

3.5.3 Bid Quantity

The bid quantity of beachfill material shall be placed to the beachfill template lines, grades, slopes and elevations as specified above, and additional quantity in excess of the template quantity shall be placed by advancing the seaward edge of berm uniformly throughout the length of the project. (Ex. If the Bid Quantity = 400,000 CY and Template Quantity = 350,000; then 50,000 CY shall be used to advance the seaward edge of berm).

In the event that a shortage of material exists between the bid quantity and the template quantity, the seaward edge of berm shall be reduced landward uniformly throughout the length of the project.

3.5.4 Placement Tolerances

a. For placement only, a vertical tolerance of plus 0.5 feet and minus 0.0 will be permitted on the berm portion of the beach; a vertical tolerance of plus 0.2 feet and minus 0.0 will be permitted on the dune portion of the beach.

b. Adjusted Construction Template: Beachfill shall be placed to the minimum seaward edge of berm and to the foreshore slope indicated on the drawings, however, the Contractor may adjust the construction template by advancing the edge of berm seaward (at the same elevation) and modifying the foreshore slope to achieve the required placement quantity within the footprint of the beachfill template shown on the drawings. An example of an adjusted construction template is attached to this section.

c. In the event that the berm elevation, the minimum seaward edge of berm or the required placement quantities are not met, recommence beachfill operations until the requirements are met. The Contractor will not be required to recommence beachfill operations in the event of erosion and/or storm damage in areas where beachfill has been completed and the survey data demonstrates compliance with the contract requirements.

3.5.5 Payment Tolerances

For payment, there will be no vertical tolerance permitted on the berm or dune portions of the beach. Payment will be made for placement, only to the lines and grades shown on the drawings (see Measurement and Payment paragraph below). In the event the Contractor adjusts the construction template as specified herein, payment will be made for measured quantity, not exceeding the required placement quantity. Payment will not be made for material placed above the required berm elevation, or placed seaward of the toe of slope. The toe of slope shall be defined as the point of intersection of the template as shown on the drawings with the before-placement survey profile.

3.5.6 Removal of Debris

Implement the procedures regarding MEC as specified in Paragraph "Detection of MEC" in Section 01 35 30 MUNITIONS AND EXPLOSIVES OF CONCERN (MEC) CONSTRUCTION SUPPORT. When non-MEC item that physically should not be able to pass through the intake screening opening is detected in the discharge screening device, immediately implement the following procedures:

a. Stop dredging and beachfill work.

b. Report the incident to the COR.

Section 35 31 00 Page 8

c. Intake and/or discharge screening devices shall be inspected and repaired if necessary.

d. Beachfill and/or dredging work shall not resume until notification from the Contracting Officer.

During the operation of placing beachfill material, all debris resulting from construction operations shall be removed from the work site and disposed of, at no additional cost to the Government. Such disposal shall comply with all applicable Federal, State and local laws. Such materials shall be removed from the site of the work before the date of completion of the work under these specifications. Debris may be temporarily stored on-site in a dumpster or roll-off box. Do not bury debris collected in the screening device in the beachfill.

3.5.7 Hydraulic and Hopper Dredges

All pipelines used with hydraulic dredges shall be kept in good condition at all times, and leaks or breaks shall be promptly repaired. Material excavated by hopper dredge shall be loaded into bins or hoppers and pumped directly to the beachfill area by a means which shall prevent the loss of material into the ocean. Special care shall be taken to assure that hoppers do not leak during any phase of the contract work.

3.5.8 Submerged Dredge Pipe

Barricades, warning signs, and lights shall be provided by the Contractor, subject to the approval of the Contracting Officer as part of the accident prevention plan, for the protection and safety of the public using the adjacent beach areas. The beachfill dredge pipe shall be clearly marked with buoy signs or other signage approved by the Contracting Officer at a distance of 200 feet seaward of the low water line at all locations that the dredge pipe is landed. This sign shall warn the public of the location and danger of the submerged pipe. All barricades, warning signs, and lights shall be installed prior to the start of work. See Section 01 30 00 ADMINISTRATIVE REQUIREMENTS for requirements to notify the Coast Guard to issue a "Notice to Mariners".

3.5.9 Removal of Stakes and Markers

Remove all stakes, markers, temporary fencing, burlap, piping, or other items used in the construction of the beach within 24 hours after completion and before approval of an acceptance section, or as otherwise directed by the Contracting Officer. All stakes, markers, temporary fencing, burlap, piping, or other items used in the construction that become uncovered after approval of the acceptance section shall be removed within 24 hours of their detection.

3.6 SITE RESTORATION

If sand fence and/or post and rail fence is removed, or dunes are affected for access, rebuild the damaged dune, replant damaged dune grass, and reinstall fencing, as necessary, to restore the area to original conditions. Materials required to establish or stabilize access points for vehicle use at those street ends shall be approved by the COR and provided and removed by the Contractor. Additional parking that the Contractor requires, outside the work limits, shall be coordinated directly with the appropriate local officials.

Section 35 31 00 Page 9

3.7 CONTRACTOR QUALITY CONTROL

3.7.1 Contractor Reports

Prepare and maintain Daily Report of Operations forms, and furnish signed copies thereof with the daily Quality Control Records, as required in Section 01 45 00 QUALITY CONTROL, to the Contracting Officer. Copies of the Daily Report of Operations forms to be used are included at the end of this Section. Submit with these daily forms the location and depth of dredging in the borrow area.

3.7.2 Samples and Testing

Obtain samples of beachfill material from each finished beach location at 500 foot intervals not more than two days following placement and final grading of beachfill and have them tested for grain size distribution in accordance with ASTM D422. All testing shall be performed by a Corps of Engineers approved laboratory as specified in Section 01 45 00 QUALITY CONTROL. Samples shall be obtained at approximately elevation +4.00 NAVD 88 on the foreshore slope. Test results shall be recorded on ENG Form 2087, a copy of which is provided in Appendix F90 of this contract. Also record on ENG Form 2087 the location of the dredge within the borrow area and the depth of dredging at the time of placement of the sand sampled.

Submit the Test Reports to the Contracting Officer within one week after completion of the laboratory testing.

3.7.3 Form Preparation

Instructions regarding the preparation of all required forms will be provided at the Contractor Quality Control Coordination Meeting.

3.8 MEASUREMENT AND PAYMENT

3.8.1 Mobilization and Demobilization

All costs connected with the mobilization and demobilization of the Contractor's plant and equipment required for placement of beachfill will be paid for at the contract lump sum prices for these items as listed in the Bidding Schedule. Sixty percent (60%) of the lump sum price will be paid to the Contractor upon completion of his mobilization at the work site. The remaining forty percent (40%) will be included in the final payment for work under this contract.

3.8.1.1 Contractor Furnished Cost Data

In the event the Contracting Officer considers that the amount in this item (sixty percent) which represents mobilization, does not bear a reasonable relation to the cost of the work in this contract, the Contracting Officer may require the Contractor to furnish cost data to justify this portion of the bid price. Failure to justify such price to the satisfaction of the Contracting Officer will result in the payment of actual mobilization costs, as determined by the Contracting Officer, at the completion of mobilization. The payment of the remainder of this item will be included in the final payment under the contract. The determination of the Contracting Officer in these circumstances is not subject to appeal.

3.8.1.2 Mobilization and Demobilization Costs

All costs in connection with the mobilization and demobilization of the

Section 35 31 00 Page 10

Contractor's plant and equipment as defined below shall be included in the contract lump sum price for Base Bid Item titled, "Mobilization and Demobilization", as listed in the Bidding Schedule.

a. Mobilization shall include all costs for operations accomplished prior to commencement of actual beachfill placement; that is transfer of all plant and equipment to the work site, initial installation of pipelines, and all other incidentals in advance of beachfill placement operations.

b. Demobilization shall include general preparation for transfer of the plant and equipment to the Contractor's home or standby base, removal of pipelines, cleanup, and the transfer of plant and equipment to the home or standby base.

c. All costs in connection with additional mobilization and demobilization of the Contractor's plant and equipment between the work areas, shall be included in the contract unit price for the Base Bid item, titled "Beachfill".

d. All costs in connection with additional mobilization and demobilization of the Contractor's plant and equipment in connection with the Option Bid Items shall be included in the contract unit prices for the respective Option Bid Items, titled "Beachfill".

3.8.2 Beachfill

The work specified in this section for placing and grading of beachfill material in the designated areas and to the lines and grades shown on the contract drawings, within the payment tolerances specified herein, will be measured for payment by the cubic yard of sand in place on the beach.

Payment will be made at the contract unit prices per cubic yard for the Base Bid and Option Items listed on the Bidding Schedule titled "Beachfill". Payment for these Bid Items shall also include full compensation to the Contractor for removing, stockpiling, and re-installing sand fence, including all costs for replacement of damaged sand fence and/or posts; removing all existing debris (including fencing, posts, wood and other miscellaneous items); performing all pre- and post- placement condition surveys and quantity surveys; providing public safety personnel;

and performing all material testing required. If the Contractor fails to remove boulders, cobbles, clay balls, or other debris from the beach, that completed fill section will not be accepted for payment.

a. The total number of cubic yards placed will be computed by the average-end-area method from cross-section surveys obtained by the Contractor before and after the beachfill operations as specified in Section 01 71 23 SURVEY REQUIREMENTS.

(1) For instances where adjacent line azimuths are not parallel, volumes are determined by computing the average-end-area method using the orthogonal distance between adjacent line origins and then adding (if azimuths diverge) or subtracting (if azimuths converge) a representative wedge volume. The representative wedge volume is determined by calculating the average area along the profile and multiplying by the arc distance defined by rotating the center of mass of the profile area about the profile origin (see attached AEA_Wedge_volumes_standard_method).

(2) The volume so computed, up to a quantity not to exceed the bid quantity, will be the pay quantity for the contract. A deduction

Section 35 31 00 Page 11 of one cubic yard will be made from the pay quantity for every cubic yard of material removed from below the maximum allowable elevation indicated for the borrow area (i.e., the maximum allowable depth plus 1 foot overdepth), or from outside the borrow area limits shown, or in excess of the maximum allowable quantity from the borrow area. Any deductions will be based on before-dredging surveys conducted prior to dredging the borrow area and after-dredging surveys conducted following dredging of the borrow area as specified in Section 01 71 23SURVEY

REQUIREMENTS.

-- End of Section --

Section 35 31 00 Page 12