C05_-_Attachment_D_-_Specifications_4.17.2017.pdf

US Army Corps of Engineers Baltimore District

CONSTRUCTION

SPECIFICATIONS

LATERAL EXPANSION,

CONTRACT 2

PAUL S. SARBANES ECOSYSTEM

RESTORATION PROJECT,

POPLAR ISLAND, TALBOT COUNTY,

MARYLAND

INVITATION NO: W912DR-17-B-0007

CONTRACT NO.

DATE: April 2017

THIS PAGE LEFT INTENTIONALLY BLANK

Lateral Expansion - Contract 2 POPLATEXPC2

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 11 00 SUMMARY OF WORK

01 14 00 WORK RESTRICTIONS

01 22 00.00 10 MEASUREMENT AND PAYMENT

01 30 00 ADMINISTRATIVE REQUIREMENTS

01 32 01.00 10 PROJECT SCHEDULE

01 33 00 SUBMITTAL PROCEDURES

01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS

01 42 00 SOURCES FOR REFERENCE PUBLICATIONS

01 45 00.00 10 QUALITY CONTROL

01 45 00.10 10 QUALITY CONTROL SYSTEM (QCS)

01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS

01 56 10 ENVIRONMENTAL PROTECTION

01 78 00 CLOSEOUT SUBMITTALS

DIVISION 31 - EARTHWORK

31 05 19 GEOTEXTILE

31 05 25 SETTLEMENT MONITORING

31 11 25 CRUSHED STONE ROADWAY

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 92 10 DIKE SEEDING AND EROSION CONTROL

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 31 19 STONEWORK

35 41 00 DIKE CONSTRUCTION

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PROJECT TABLE OF CONTENTS Page 1

SECTION 01 11 00

SUMMARY OF WORK

08/15

PART 1 GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

1.1.1 Project Description

The work includes construction of a segmented breakwater dike and northern wetland containment Cells 8, 9, and 10 (with cross-dikes) and incidental related work. The breakwater will initially be constructed as a continuous feature with openings constructed during a later stage of this contract.

1.1.2 Location

The work is located at Poplar Island in the Chesapeake Bay, approximately as indicated. The exact location will be shown by the Contracting Officer.

1.1.3 Transportation Facilities

The work site is accessible by water only. The Contractor must make their own investigation of transportation facilities in the vicinity of the work.

1.1.4 Weather Conditions

Complete weather records and reports may be obtained from the U.S. Weather Bureau. The Contractor must satisfy on their own the hazards likely to arise from weather conditions during the construction period. The site of work is exposed, and suspension of work may at times be necessary during storm periods. Anticipate the possible infrequent approach of tropical and subtropical storm systems, including hurricanes between Jun 01 and Dec

01. Anticipate possible ice conditions at the work site from December through March. Determine the effect that currents and wave action will have on construction operations. The mean range of tide (Mean High Water

- Mean Low Water) and the Great Diurnal Range of tide (Mean Higher High Water - Mean Lower Low Water) at Poplar Island are 1.1 feet and 1.5 feet, respectively.

1.2 EXISTING WORK

In addition to "FAR 52.236-9, Protection of Existing Vegetation, Structures, Equipment, Utilities, and Improvements":

a. Remove or alter existing work in such a manner as to prevent injury or damage to any portions of the existing work which remain.

b. Repair or replace portions of existing work which have been altered during construction operations to match existing or adjoining work, as approved by the Contracting Officer. At the completion of operations, existing work must be in a condition equal to or better than that which existed before new work started.

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PART 2 PRODUCTS

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PART 3 EXECUTION

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SECTION 01 11 00 Page 2

SECTION 01 14 00

WORK RESTRICTIONS

11/11

PART 1 GENERAL

1.1 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

List of Contact Personnel; G , AO

Personnel List; G , AO

Vehicle List; G , AO

Statement of Acknowledgement Form SF 1413; G , AO

1.2 COMPLIANCE WITH ISLAND REGULATIONS

The site of the work is on a working island and all rules and regulations issued by the Contracting Officer and Resident Engineer covering general safety, security, sanitary requirements, pollution control, traffic regulations and parking, shall be observed by the Contractor. Information regarding these requirements may be obtained by contacting the Contracting Officer, who will provide such information or assist in obtaining same from appropriate authorities.

1.3 SPECIAL REQUIREMENTS FOR POPLAR ISLAND

1.3.1 General Information

a) The Paul S. Sarbanes Ecosystem Restoration Project at Poplar Island is a cost shared project between the U.S. Army Corps of Engineers and the State of Maryland, Maryland Port Administration.

b) Inspection of the Paul S. Sarbanes Ecosystem Restoration Project at Poplar Island prior to the Contractor's submission of bids should be coordinated with the Baltimore District, Design Team Leader, Mr. Thomas Myrah, (410) 962-6757

c) The Contractor's attendance is required at weekly and other scheduled status meetings held at Poplar Island.

1.3.2 Docking Facilities

a) The Contractor is allowed to utilize the access facilities provided at the head of the southern access channel but will be responsible for any costs for damages resulting from his operations and will promptly restore the facilities to their prior condition in the event of damage. The contractor is also

SECTION 01 14 00 Page 1 permitted to use the personnel pier for dropping off and picking up of personnel. Use of these areas for storage of equipment and/or materials will not be permitted. Any permanent mooring location and/or modification of the existing mooring facilities will be subject to the Contracting Officer's approval.

b) Berthing of Barges: The Contractor shall be responsible for providing a means of berthing barges or scows. The Bulkhead may not be used for the berthing or mooring of barges without specific permission from the Contracting Officer. Submit a berthing scheme as part of his operations plan, which must be approved by the Contracting Officer.

1.3.3 Storage Areas

a) All operations related to the storage of equipment and materials shall be confined to the areas as shown on the contract drawings with approval by the Contracting Officer. Include requirements for storage space in the operations plan submitted for approval.

b) Temporary buildings (storage sheds, shops, offices, etc.) may be erected and utilities may be altered by the Contractor upon approval by the Contracting Officer, and must be built with labor and materials furnished by the Contractor without expense to the Government. Such temporary buildings and utilities must remain the property of the Contractor and must be removed by him at his expense upon the completion of the work. Upon approval of the Contracting Officer, such buildings and utilities may be abandoned and need not be removed.

c) Use only established roadways or construct and use such temporary roadways as may be authorized by the Contracting Officer. Where materials are transported in the prosecution of the work, vehicles shall not be loaded beyond the loading capacity recommended by the manufacturer of the vehicle or prescribed by any Federal, State, or local law or regulation. When it is necessary to cross any roadways, curbs or utilities, protection against damage shall be provided by the Contractor and any damaged roadways, curbs or utilities shall be repaired promptly by, or at the expense of the Contractor.

d) The Contractor shall be responsible for any necessary maintenance or improvement, and periodic clean up of the storage areas.

1.3.4 Speed Limit

The speed limit at Poplar Island is 15 miles per hour, except where lower limits are posted. Employees shall be cautioned to slow down in the vicinity of the Operations facilities and for pipe crossings, and to watch out for heavy equipment and pedestrians. Vehicles shall be operated in a careful manner and any employee found to be operating his vehicle in a reckless manner will be denied the privilege of driving on the facility.

1.3.5 Safety and Fire Protection

All regulations regarding safety and fire protection will be complied with by the Contractor, his subcontractors, and employees. The Contractor must familiarize himself and all personnel engaged in work under his direction, with the communication procedures for emergency, safety and hazard

SECTION 01 14 00 Page 2 reporting. Bottles, cans and other trash shall be placed in trash receptacles to eliminate safety hazards and shall be removed by the Contractor. No burning is allowed on Poplar Island.

1.3.6 Spill Containment (Fuels and Lubricants)

Employ measures to prevent or control spills of fuels or lubricants from entering the waterway. Submit a fuel spill control plan to the Contracting Officer for approval before commencing unloading operations, including plans for recovery of any spilled fuels or lubricants. Any spills of fuels, lubricants or other material must be reported immediately to the U.S. Coast Guard, National Response Center, Maryland Department of the Environment, Water Resources Administration, the Contracting Officer or his representative, and the Maryland Port Administration.

1.3.7 Repairs to Roads and Rights of Way

The Contractor shall be responsible for the maintenance and repair to roads, rights of way, and other access points throughout the Contractor's performance at Poplar Island. This responsibility includes only those roads and areas which the Contractor actually uses in his operations.

Maintenance of roadways shall include the control of dust which may occur as a result of the Contractor's activities. The Contractor must employ only those methods of dust control which have been approved by the Contracting Officer.

1.3.8 Joint Inspection

A joint inspection of all facilities will be conducted by the Contractor, the Maryland Port Administration, Maryland Environmental Service, and the Contracting Officer prior to commencing operations and upon completion of operations at Poplar Island to ascertain any damages or deficiencies.

1.3.9 1.4.3 Existing Poplar Island Wells

The water produced from the existing Poplar Island wells is not cleared for human consumption but may be used by Contractor for other purposes.

1.4 INSPECTIONS

The Contractor must furnish, on the request of the Contracting Officer, any Government inspector, or authorized representative, suitable transportation from all points on shore designated by the Contracting Officer to and from the various Project work areas at Poplar Island.

1.5 CONTRACTOR ACCESS AND USE OF PREMISES

1.5.1 Activity Regulations

Ensure that Contractor personnel employed on the Activity become familiar with and obey Activity regulations including safety, fire, traffic and security regulations. Keep within the limits of the work and avenues of ingress and egress. Wear hard hats in designated areas. Do not enter any restricted areas unless required to do so and until cleared for such entry. Mark Contractor equipment for identification.

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1.5.1.1 Subcontractors and Personnel Contacts

Provide a list of contact personnel of the Contractor and subcontractors including addresses and telephone numbers for use in the event of an emergency. As changes occur and additional information becomes available, correct and change the information contained in previous lists.

1.5.2 Working Hours

Regular working hours must consist of an 8 1/2 hour period , between 7 a.m. and 3:30 p.m., Monday through Friday, excluding Government holidays.

1.5.3 Work Outside Regular Hours

Work outside regular working hours requires Contracting Officer approval.

Make application 5 calendar days prior to such work to allow arrangements to be made by the Government for inspecting the work in progress, giving the specific dates, hours, location, type of work to be performed, contract number and project title. Based on the justification provided, the Contracting Officer may approve work outside regular hours. During periods of darkness, the different parts of the work must be lighted in a manner approved by the Contracting Officer.

1.5.4 Occupied Buildings

The Contractor shall be working around existing buildings which are occupied. Do not enter the buildings without prior approval of the Contracting Officer.

1.6 ORDER OF WORK AND COORDINATION WITH OTHER CONTRACTORS

The Contractor is advised that other Contractors and the Maryland Environmental Service (MES) are likely to be performing work in adjacent unloading, storage, dredging, and discharge areas. Such work may include but not be limited to dike maintenance and stockpiling. The Contractor shall be responsible for coordinating his activities with the other Contractors and the Maryland Environmental Service to avoid interference with each other's operations. After award of this contract a meeting will be held with all contractor representatives and the Contracting Officer to develop a plan of work coordination. In case of disagreement regarding use of an area the decision of the Contracting Officer will control.

PART 2 PRODUCTS

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PART 3 EXECUTION

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SECTION 01 22 00.00 10

MEASUREMENT AND PAYMENT

02/94

PART 1 GENERAL

1.1 SCOPE

This section covers the methods and procedures which will be used to measure the Contractor's work, to effect payment, and to accept the completed work.

1.2 GENERAL

The general outline of the principal features of each item as listed does not in any way limit the responsibility of the Contractor for making a thorough investigation of the drawings and specifications to determine the scope of work under the entire contract. Payment to the Contractor of the amounts based on the quantities of work as measured in accordance with the specified methods of measurement and the prices stipulated in the accepted proposal will constitute complete compensation for all work shown on the drawings, provided in the specifications or other Contract Documents and all costs of accepting the general risks, liabilities and obligations expressed or implied. Payment under all items shall include, but not necessarily be limited to, compensation for furnishing all supervision, labor, equipment, materials and services (including overhead and profit), as well as performing all work required to accomplish and complete the work specified under each item and other work required. Miscellaneous items of work not specifically covered by the lump sum or unit priced items listed herein shall be considered incidental to the job.

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-02 Drawings

Cross Sections

Surveyed Cross Sections shall be submitted to the Contracting Officer on CD and hard copy (11"x 17" paper) no more than 1 week after survey section is completed. Cross sections will include original pre-construction survey lines overlayed on the current material surface being surveyed and the payment template.

SD-03 Product Data

Weight Tickets

Copies of stone weight tickets shall be provided to the Contracting Officer within 1 week of delivery.

SECTION 01 22 00.00 10 Page 1

Stone Deduction Log

Logs of stone deductions, as described in Paragraph 1.6.4.4, shall be submitted to the Contracting Officer within 1 week of delivery.

SD-08 Instructions

Survey Methods; GA, AO

The surveyor shall submit for approval his methods of performing the work as described in this specification, no later than 60 calendar days after receipt of Notice to Proceed and no less than 30 calendar days prior to beginning work.

Stone Weighing Methods; GA, AO

Methods of weighing stone tonnages shall be one or more of the options given in Section 1.6.4 the specifics of which shall be submitted for approval no later than 60 calendar days after receipt of Notice to Proceed and no less than 60 calendar days prior to beginning stonework.

SD-09 Field Reports

Survey Data

Survey data files shall be submitted to the Contracting Officer no more than 24 hours after completion of each section.

Quantity Calculations; GA, AO

End area and volume calculations shall be submitted to the Contracting Officer no more than 1 week after surveyed section is completed.

Survey Field Notes

All survey field notes shall be submitted to the Contracting Officer no later than 1 week after completion of each set of cross sections.

1.4 LUMP SUM PAYMENT ITEMS

Payment items for the work of this contract for which contract lump sum payments will be made are listed in the BIDDING SCHEDULE and described below. All costs for items of work, which are not specifically mentioned to be included in a particular lump sum or unit price payment item, shall be included in the listed lump sum item most closely associated with the work involved. The lump sum price and payment made for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, meeting safety requirements, tests and reports, and for performing all work required for which separate payment is not otherwise provided. Interim payments will be made in accordance with the estimated value of work done as determined by the Contracting Officer or as specified in this section, and in accordance with CONTRACT CLAUSE for PAYMENTS.

SECTION 01 22 00.00 10 Page 2

1.4.1 Quantities Under Lump Sum Items

The quantities under lump sum items will not be measured except for the purpose of determining reasonable interim payments.

1.5 UNIT PRICE PAYMENT ITEMS

Payment items for the work of this contract on which the contract unit price payments will be made are listed in the BIDDING SCHEDULE and described below. The unit price and payment made for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, meeting safety requirements, tests and reports, and for performing all work required for each of the unit price items.

1.5.1 Excavation and/or Removal Items

Excavation and/or removal items will be measured from existing ground levels to excavation surfaces shown on the drawings or as directed by the Contracting Officer. Fill items will be measured from existing ground levels to final fill surfaces shown on the drawings or as directed by the Contracting Officer. Existing ground levels shall be surveyed prior to any disturbances in accordance with the relevant provisions of these specifications. In the event excavation surfaces are not clearly shown on the drawings, the Contractor shall obtain clarification from the Contracting Officer prior to commencement of excavation and/or removal.

1.5.2 Quantity Surveys

The Contractor shall employ an independent registered professional land surveyor licensed in the State of Maryland, or equivalent, and experienced in land and hydrographic surveying. The Contractor's independent surveyor shall perform all surveys required by this contract with equipment and personnel completely independent from the Contractor's forces. The Contractor's independent surveyor shall be approved by the COR. Surveys shall be conducted in accordance with the most current versions of U.S.

Army Corps of Engineers Engineer Manuals EM 1110-2-1003, Hydrographic Surveying as well as EM 1110-1-1005, TOPOGRAPHIC SURVEYING. Surveying tasks outlined within this contract specification shall be conducted following quality control and quality assurance procedures outlined within EM 1110-2-1003 for all hydrographic surveys and EM 1110-2-1005 for all topographic surveys. All surveys will be referenced to NAD 83 and the Poplar Construction Datum (PCD). The survey control data are reflected on the drawings. All mapping shall conform to USACE CADD standards. All data as required in this section shall be submitted on CD-ROM, unless otherwise approved by the Contracting Officer. Three copies of each submission shall be provided. When a hard copy is submitted, the Contractor shall submit 6 copies. See Section 01 33 00 for required formats. Survey data shall be provided in digital AutoCAD design (DWG) files. All surveys required under the terms and conditions of this contract should be considered coincidental to the performance of the contract and shall be performed at no additional cost to the Government. In addition to the above the Contractor shall adhere to the following requirements:

a. Quantity surveys shall be conducted by the Contractor's independent surveyor, and the data derived from these surveys shall be used in computing the quantities of work performed and the actual construction completed and in place.

SECTION 01 22 00.00 10 Page 3

b. The Contractor's independent surveyor shall conduct the original and final surveys and surveys for any periods for which progress payments are requested. All these surveys shall be conducted under the direction of a representative of the Contracting Officer, unless the Contracting Officer waives this requirement in a specific instance. The Contractor shall make all computations necessary to compute the quantities of material placed in each 50 foot section of dike, as described under Survey Requirements.

c. Upon completing a survey, the Contractor shall furnish the survey data within 24 hours, and originals of all field notes, quantity calculations, sections, and all other records relating to the survey or to the layout of the work within one week to the Contracting Officer, who shall use them as necessary to determine the amount of progress payments. Survey data files shall be in ASCII "x,y,z" format and shall be accompanied by appropriate descriptor data files, including but not limited to: datum, date, time, tidal data, type (e.g. total station, small boat hydro, etc.), nominal dike station, if appropriate, and surveyor. For each pay item (the data submittal for bedding and underlayer may be combined but still require separate survey and delineation of data), the Contractor shall submit each cross section plotted from the appropriate survey data and shall submit the end section area calculation for that pay item. The cross sections shall include the pay template and tolerance of the pertinent material.

The Contractor shall retain copies of all such material furnished to the Contracting Officer. (CENAB)

d. The Contractor shall develop, or obtain, quantity calculation program or software compatible with Windows-10 operating system, unless otherwise approved by the Contracting Officer, which shall be utilized to calculate the quantities upon which progress payment requests will be based. The quantity calculation program shall calculate quantities, using an inputted centerline elevation and the contract specified templates, as the basis for developing the cross-sectional area for each station. The quantity calculation program shall incorporate the ability to correct quantities for curves, either to the right or to the left, in the centerline alignment. The Contractor shall conduct a centerline survey, for all payment quantities for which progress payments are being requested, to determine the centerline elevations, and shall utilize the quantity calculation program to calculate quantities each time a progress payment request is submitted. The calculated quantities shall be the sole basis for making progress payments on unit price items. The quantity calculation program shall only be used for progress payments. Final quantity calculations shall be based upon measurement of the cubic yards in place, or excavated, as the case may be, between the existing ground surface and the fill/excavation lines shown on the drawings or as specified in the specifications. Measurement for the final quantities shall be by the average end area method with curve correction. A copy of the software which is purchased or developed for use in complying with this specification paragraph shall be provided to and become the property of the Government. The Government shall also receive a copy of any/all instruction manuals or literature related to the quantity calculation program.

1.5.3 Survey Requirements for Dike Fill Construction

The Contractor's independent surveyor shall take before and after placement surveys of all dike fill construction. The Government may also conduct independent soundings or surveys at its discretion. The material excavated and/or placed will be measured by the cubic yard in place in the

SECTION 01 22 00.00 10 Page 4 dike, by means of soundings and surveys taken before and after placement.

The drawings represent existing conditions based on latest available information but will be verified and corrected, if necessary, by soundings taken by the Contractor immediately before placement in any locality.

Surveys in water (hydrographic surveys) shall be taken by either manual or acoustic techniques in accordance with the Engineering Manuals referenced herein, or both: Acoustic techniques may include single beam and/or multi-beam systems operating at 200 kHz +/- 10%. Results of soundings by either method will be the basis for payment. As a minimum, hydrographic surveys shall be conducted at 100-foot intervals. As a minimum, topographic survey cross sections will be conducted every 50 feet along the dike centerline with surveyed points spaced not more than 10 feet apart, at any break in slope, and sufficient additional points as necessary to accurately represent the placed material. Survey points will extend a minimum of 150 feet beyond the dike template. Areas sounded more than 30 days prior to placement will be resounded immediately prior to placement. Monthly estimates of completed work will be based on soundings and surveys taken by the Contractor's independent surveyor during the progress of work. Deductions will be made for placement outside of the payment limits.

1.5.4 Survey Requirements For Stonework

For each prepared surface, check surveys shall be conducted by the Contractor's independent surveyor before and after placing each stone layer. The Contractor shall make checks as the work progresses to verify the lines, grades, and thicknesses of the completed stone layers. At least one check survey shall be made for each different rock layer, as specified below, at sections spaced not more than 50 feet apart, with surveyed points spaced not more than 5 feet apart, at any break in slope, and sufficient additional points as necessary to accurately represent the rock in place. Elevations taken shall not deviate more than 1.0 foot from the line of section. The Contractor should expect that more survey points will be required to accurately represent the uppermost layer of armor stone. Station locations selected for the initial surveys shall be used for all subsequent surveys of completed stone surfaces. Elevations above water shall be determined by the use of a leveling instrument and rod having a base of 12 inches in diameter. Other means, if approved by the Contracting Officer, may also be used. For surveys below water (hydrographic surveys), either manual or acoustic techniques, including single beam or multi-beam systems operating at 200 kHZ +/- 10%, shall be used. If a manual method is used, each survey will consist of soundings taken either by means of a sounding pole, or a sounding basket weighing

8.5 pounds, each of which has a base measuring 12 inches in diameter. The surveys shall be conducted in the presence of the Contracting Officer's authorized representative unless otherwise waived. Specifically, the following surveys shall be required:

a. Foundation surface immediately prior to placement of quarry run stone for the rock toe dike.

b. Surface of completed quarry run stone immediately prior to placement of toe armor stone.

c. Surface of the crest and slopes of the rock toe dike immediately prior to placement of dike fill. Sections shall extend 150 feet beyond the dike toes.

d. Surface of the shaped sand dike immediately prior to placement

SECTION 01 22 00.00 10 Page 5 of geotextile/bedding stone.

e. Surface of the completed bedding stone layer immediately prior to placement of the underlayer stone.

f. Surface of the completed underlayer stone immediately prior to placement of the armor stone.

g. Surface of the completed exterior surface of the armor and toe armor stone.

A copy of the record of the check survey, including both field notes and plotted cross sections, shall be provided to the Contracting Officer, or his authorized representative, as specified in paragraph 1.5.2(c). The Contractor shall not permit placement of the next layer of stone until the surveys have been checked by QC personnel to verify that the completed stone layer is in compliance with the lines, grades, and tolerances presented in these drawings and specifications. Deductions will be made to the quantity of rock occurring outside the limits of payment.

Deductions will be calculated from disallowed cross-sectional area and converted to tonnage using 1.5 tons/cy of structure (1.6 tons/cy for bedding and quarry run).

1.5.5 Surveys for Reverse Filter Zones

Surveys for the reverse filter zones shall be conducted by the Contractor before and after placement of the individual filter zone layers. The surface of the bottom, undisturbed layer of 1500-pound toe armor (designated as E3 on the reverse filter detail) shall be surveyed immediately prior to placement of quarry run; the surface of the completed quarry run shall be surveyed immediately prior to placement of AASHTO #57 Stuctural Fill; and the surface of the completed AASHTO #57 Structural Fill shall be surveyed immediately prior to placement of AASHTO #7 Filter Material. Each surface shall be prepared to ensure the specified minimum layer thicknesses. As a minimum, survey cross sections shall be conducted every 50 feet along the dike centerline with surveyed points spaced not more than 5 feet apart, and sufficient additional points as necessary to accurately represent the placed material. Survey points will extend a minimum of 5 feet beyond the limits of the filter zone template.

1.5.6 Surveys for Spillway Structural Bases

Surveys for the reverse filter zones shall be conducted by the Contractor before and after placement of the individual filter zone layers. The foundation surface shall be surveyed immediately prior to placement of AASHTO #57 Stuctural Fill, and the surface of the completed AASHTO #57 Structural Fill shall be surveyed immediately prior to placement of AASHTO #7 Filter Material. As a minimum, survey cross sections will be conducted every 50 feet along the dike centerline with surveyed points spaced not more than 5 feet apart, and sufficient additional points as necessary to accurately represent the placed material. Survey points will extend a minimum of 5 feet beyond the limits of the structural spillway base template.

1.5.7 Surveys for Minus 12-inch Rock Fill

Surveys for the minus 12-inch rock fill crest armoring shall be conducted by the Contractor before and after placement of the geotextile and rock fill materials. The dike surface upon which the rock fill is to be placed

SECTION 01 22 00.00 10 Page 6 shall be graded to ensure a minimum section thickness of 15 inches. As a minimum, survey cross sections will be conducted every 50 feet along the dike centerline with surveyed points spaced not more than 5 feet apart, and sufficient additional points as necessary to accurately represent the placed material. Survey points will extend a minimum of 5 feet beyond the limits of the rock fill surface.

1.5.8 Surveys for Crushed Stone Roadways

Surveys for the crushed stone roadways shall be conducted by the Contractor before and after placement of the geotextile and crushed stone materials for the roadway section. The dike surface upon which the roadway section is to be placed shall be graded to ensure a minimum roadway section thickness of 8 inches. As a minimum, survey cross sections will be conducted every 50 feet along the dike centerline with surveyed points spaced not more than 5 feet apart, and sufficient additional points as necessary to accurately represent the placed material. Survey points will extend a minimum of 5 feet beyond the limits of the crushed stone roadway surface.

1.6 PAYMENT ITEMS

For each unit price pay item outlined below, the Government will not pay more than 90 percent of calculated quantities before acceptance of the section. Any excavation and spoiling of existing materials necessary in the completion of work under this contract, beyond that included in the following items, shall be considered incidental to the job. No additional payment will be made for any items not included in the following items, including, but not limited to, excavation for placement of quarry run stone.

1.6.1 PERFORMANCE AND PAYMENT BONDS REIMBURSEMENT (ITEM NO. 0001)

The Government will reimburse the Contractor for the entire amount of premiums paid for Performance, Payment and Bid Bonds (including coinsurance and reinsurance agreements where applicable) at the contract lump sum amount under the Unit Price Schedule Item No. 0001, entitled Reimbursement of Performance and Payment Bonds. Such payment will be made only after the Contractor furnishes to the Government evidence of full payment to the surety. In no case will any payment be made by the Government for reimbursement of Performance Payment and Bid Bonds exceeding that amount bid by the Contractor under the aforementioned Unit Price Schedule Item.

1.6.2 MOBILIZATION AND DEMOBILIZATION (ITEM NO. 0002)

1.6.2.1 Scope

Mobilization shall include all costs associated with the transfer of the following equipment from its home station to the site: barges, cranes, draglines, hydraulic excavators, bulldozers, dump trucks, similar large construction equipment required to construct the dikes. Demobilization shall include all costs associated with transferring the above equipment back to its point of origin.

1.6.2.2 Payment

Costs for mobilization and demobilization as defined in paragraph 1.6.2.1 shall be paid for in accordance with Bid Item No. 0002, Mobilization and

SECTION 01 22 00.00 10 Page 7

Demobilization, of the Unit Price Schedule. Sixty percent (60%) of the contract lump sum price for Item No. 0002 shall be paid after the mobilization of all major construction equipment to the site. The remaining forty percent (40%) shall be paid after the removal of all equipment and plant from the site and the completion of all clean-up of the work site.

1.6.3 DIKE FILL MATERIAL (ITEM NO. 0003)

1.6.3.1 Measurement

The total material to be paid for under the contract will be measured by the cubic yard in place, by computing the volume between the bottom surface shown by soundings or survey taken before placement and the surface shown by elevations of a survey made as soon as practical after the work has been completed.

(a) Computation for payment purposes will be made by the Contractor, utilizing the average end area method and electronic data processing equipment.

(b) Payment shall be made to the contractor for all material placed within the limits of the required prisms, slopes, and tolerances as specified and indicated, but excluding material placed beyond these limits.

(c) Determination of quantities placed and the deductions made therefrom to determine quantities in place to be paid for, after having once been made, will not be reopened except in evidence of collusion, fraud, or obvious error.

1.6.3.2 Payment

Payment for dike fill material shall be made in accordance with Bid Item No. 0003, Dike Fill Material, which shall include all costs for equipment, labor, and performing all work necessary to excavate and transport dike fill from designated stockpile locations and to place, shape, and maintain dike fill in accordance with the drawings and specifications until acceptance by the Contracting Officer. No separate payment shall be made for the costs of excavating suitable materials from the stockpile or excavating and disposing of unsuitable materials from the stockpile.

Costs for excavation and disposal shall be included in the unit price per cubic yard for dike fill material.

1.6.4 STONEWORK (ITEM NO. 0004)

Unless the limits of work are modified, the quantities shown on the bid schedule shall be used as the basis for payment. The unit of measurement for stone in place in the finished work will be the ton of 2,000 pounds.

Measurement for all stone will be based on the weight of stone, surface dry, in its natural state, as determined by one or more of the following methods described herein. The Contractor shall submit the proposed method of measurement, including Quality Control provisions, to the Contracting Officer for approval. All measurements methods shall be conducted in accordance with U.S. Army Corps of Engineers Engineer Manual EM 1110-2-2302 Construction with Large Stone.

1.6.4.1 Vessel Displacement

When vessel displacement is used for the determination of weights, the

SECTION 01 22 00.00 10 Page 8 following procedure will be used for the determination. Each vessel will be accurately measured and will be fitted with gauges graduated to the half-foot. All gauges shall be outfitted to the outer hull of each vessel. The gauges will be located on each corner of the vessel, near the lower end of the rake, with two additional gauges amidships. Fore and aft displacement due to load will not differ more than 10 percent from their mean for the determination of tonnage, except in unavoidable cases. All gauge readings will be made in still water, estimated to the nearest tenth of a foot. At the option of the Contracting Officer, tonnage determinations may be made at the loading point by using change in gauge readings from light marks to load marks, or at the unloading point by using change in gauge readings from load marks to light marks. The Contracting Officer shall have the opportunity to be present at all draft readings. All vessels shall be pumped dry (within the limits of the pump suction) before each gaging, and limbers shall be kept open so that any water in the vessel will flow freely to the pump suction. Gauging tables, prepared by an accredited agent satisfactory to the Contracting Officer, shall be included in the Contractor's Stone Weighing Methods submittal for each vessel to be used. The weight of the water displaced at the point of gauging will be based on approved hydrometer readings of the water assuming that water weighing 62.4 and 64 pounds per cubic foot for fresh water and salt water, respectively. Each barge shall be calibrated a minimum of one time, and additionally as directed by the Contracting Officer, by measuring the weight of all stone placed on the barge by the procedures specified below in the paragraph "Certified Weight", and comparing the sum of those certified weights with the weight determined by the barge displacement method. The gauges on the barge shall be adjusted as necessary to address any discrepancy in the certified weights and the weights computed by displacement measurements.

1.6.4.2 Weight

Stone delivered by vessel not using the Certified Weight Method or the Vessel Displacement method for determining weight shall be weighed by approved hydraulic or spring-type line scale furnished by the Contractor at the site of the work. Stone removed from existing dikes and/or stockpiles shall be weighed by approved hydraulic or spring-type line scale furnished by the Contractor at the site of the work. The scale shall be officially tested and sealed by the certified sealer of weights and measures every 4 months without expense to the Government. A representative of the Contracting Officer shall record scale weights and the Contractor will countersign records.

1.6.4.3 Certified Weight

If shipments are made by railroad from the quarry to tidewater and then transferred to barges, certified railroad weights will be accepted in place of weights determined by barge displacements. If shipments are made by truck from the quarry, each truckload of stone shall be weighted on scales, which have been carefully verified by a properly accredited official. One original report and duplicate copy of weights of each carload or truckload, certified by the weigher and prepared in ink or indelible pencil, shall be furnished to the Contracting Officer. The report shall show gross, tare, and net weight of each carload or truckload. If there is, in the opinion of the Contracting Officer or his representative, any doubt as to the quantity of stone on any car or truck, as indicated by the weight determined at the point of shipment, due to loss in transit or other causes, the Contractor shall at his expense have such car or truck reweighed in the presence of the Contracting Officer or

SECTION 01 22 00.00 10 Page 9 his representative on scales which have been verified by a properly accredited official. Should there be a difference in weight of stone at the point of shipment and at the point of destination, the weight at the latter point will be accepted as correct and used for payment. The cost of meeting the foregoing requirements shall be included in the contract price.

1.6.4.4 Stone Deductions

Computation of the deduction from delivered tonnage for rejected stone or stone placed beyond the prescribed tolerances will be on the basis of cross-sections of the finished work, and a deduction of 1.5 tons per cubic yard of structure built outside of the prescribed tolerances. Should stone with a density more than 175 pounds per cubic foot in dry air be used in the structure, a correction in the tonnage shown on the weight certificate will be made. The tonnage to be paid for shall be the number of tons proportionally corrected using 175 pounds per cubic foot as the base correctional factor. All stone deduction logs shall be submitted to the Contracting Officer within one week of delivery.

1.6.4.5 Payment

Payment for stonework complete in place and accepted by the Contracting Officer shall be made in accordance with the following Bid Items of the Unit Price Schedule:

Item No. 0004AA: 2500-lb Armor Stone - Quarried, Shipped, and Placed on New Dike/Tie-in

Item No. 0004AB: 2500-lb Armor Stone - Placed on New Dike and/or Tie-in

Item No. 0004AC: 1500-lb Toe Armor Stone - Quarried, Shipped, and Placed on New Dike/Tie-in

Item No. 0004AD: 1500-lb Armor Stone - Placed on New Dike and/or Tie-in

Item No. 0004AE: 350-lb Toe Armor/Slope Armor Stone - Quarried, Shipped, and Placed on New Dike/Tie-in

Item No. 0004AF: 350-lb Toe Armor/Slope Armor Stone - Placed on New Dike and/or Tie-in

Item No. 0004AG: 250-Lb Underlayer Stone - Quarried, Shipped, and Placed on New Dike/Tie-in

Item No. 0004AH: 250-Lb Underlayer Stone - Placed on New Dike and/or Tie-in

Item No. 0004AJ: Quarry Run Stone - Quarried, Shipped, and Placed on New Dike/Tie-in

Item No. 0004AK: Minus 12-inch Shot "Rock Fill" - Quarried, Shipped, and Placed on New Dike/Tie-in

Item No. 0004AL: Minus 12-inch Shot "Rock Fill" - Placed on New Dike and/or Tie-in

Item No. 0004AM: Bedding Stone - Quarried, Shipped, and Placed on New Dike/Tie-in

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Item No. 0004AN: Bedding Stone - Placed on New Dike and/or Tie-in

Item No. 0004AP: #57 Stone - Quarried, Shipped, and Placed on New Dike for Spillway Bases and Reverse Filters at Tie-ins

Item No. 0004AQ: #7 Stone - Quarried, Shipped, and Placed on New Dike for Spillway Bases and Reverse Filters at Tie-ins

Items 0004AB, 0004AD, 0004AE, 0004AG, 0004AH, 0004AK, 0004AM, 0004AP, 0004AQ, 0004AS, and 0004AT refer to stone in place on existing dikes, which shall be salvaged and either stockpiled or placed on the new dike as shown on the contract drawings. A 100 percent recovery factor was been used to develop estimated quantities for these items. The Contractor shall make every effort to recover all of the existing stone.

1.6.5 GEOTEXTILE (ITEM NO. 0005)

Measurement of geotextile shall be made on the total surface area covered in square yards, in place after approval and acceptance by the Contracting Officer. Measurement will be made to the nearest square yard. No allowance will be made for material in seams and overlaps. No measurement nor payment will be made for geotextile that is replaced because it is defective or as a result of damage due to either fault or negligence of the Contractor. Payment for Geotextile, complete in place and accepted by the Contracting Officer, shall be made in accordance with Bid Item No.

0005, Geotextile, of the Unit Price Schedule.

1.6.6 CRUSHED STONE ROADWAY (ITEM NO. 0006)

Measurement of crushed stone roadway shall be made on the total surface area covered in square yards, in place after approval and acceptance by the Contracting Officer. Payment for crushed stone roadway, complete in place, and accepted by the Contracting Officer, shall be made in accordance with Bid Item No. 0007, Crushed Stone Roadway, of the Unit Price Schedule.

1.6.7 SETTLEMENT MONITORING PADS (ITEM NO. 0007)

Settlement monitoring shall be paid for per each settlement pad installation. Payment for settlement monitoring, complete, shall be made in accordance with Bid Item No. 0007, Settlement Monitoring Pads, of the Unit Price Schedule. The price shall include fabrication of the pads, installation, initial and final location and elevation surveys, and jetting activities as specified herein.

1.6.8 TURF REINFORCEMENT MAT (TRM) (ITEM NO. 0008)

Measurement of Turf Reinforcement Mat (TRM) shall be made on the total surface area covered in square yards, in place after approval and acceptance by the Contracting Officer. Measurement will be made to the nearest square yard. No allowance will be made for material in seams and overlaps. No measurement nor payment will be made for TRM that is replaced because it is defective or as a result of damage due to either fault or negligence of the Contractor. Payment for TRM, complete in place and accepted by the Contracting Officer, shall be made in accordance with Bid Item No. 0008, Turf Reinforcement Mat (TRM), of the Unit Price Schedule.

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1.6.9 SEEDING AND EROSION CONTROL (ITEM NO. 0009)

Measurement for seeding and erosion control measures shall be by the square yard of seeding and erosion control material acceptably placed.

The unit price shall include hauling, placement, and full compensation for all plant, labor, materials, equipment, and all incidental items necessary to complete the work as shown on the drawings and specified in Section 32 92 10 of the specifications. Payment for seeding and erosion control, complete in place, and accepted by the Contracting Officer, shall be made in accordance with Bid Item No. 0009, Seeding and Erosion Control, of the Unit Price Schedule.

1.7 TIE-IN EXCAVATION (ITEM NO. 0010)

Payment shall be made to the Contractor for the excavation of existing materials at the two tie-ins to the existing project, as specified herein and shown on the Contract Drawings, at the contract lump sum amount under the Bid Item No. 0011, Tie-in Excavation. Payment shall include all costs for furnishing plant, labor, materials, and equipment and for performing all work necessary to remove, weigh, and transport existing materials to the designated temporary stockpiles and/or material barges and to dispose of removed geotextile. Salvaged materials shall be weighed and stockpiled as specified. Salvaged materials subsequently placed on the new dike, as specified herein and shown on the Contract Drawings, shall be paid in accordance with Bid Item No. 0004, Stonework. No separate payment shall be made for temporary stockpile of salvaged materials.

1.8 BREAKWATER END CAP EXCAVATION AND CONSTRUCTION TO EL. +6 FT (ITEM NO.

0011)

Payment shall be made to the Contractor for the excavation of the two openings and subsequent end cap construction to elevation +6 ft. PCD associated with Stage-2 Breakwater dike construction, as specified herein and shown on the Contract Drawings, at the contract lump sum amount under the Bid Item No. 0010, Breakwater Excavation and End Cap Construction to EL. +6 ft. Payment shall include all costs for furnishing plant, labor, materials, and equipment and for performing all work necessary to remove, weigh (as applicable), and transport Stage-1 materials to the designated temporary stockpiles and/or material barges, to dispose of removed geotextile, and to construct the four breakwater end caps with salvaged materials. No separate payment shall be made for geotextile or stone materials removed or placed as part of end cap construction to elevation +6 ft. PCD. Salvaged materials not reused for construction of the breakwater end caps shall be weighed and stockpiled as specified. No separate payment shall be made for temporary stockpile of salvaged materials. Salvaged materials subsequently placed on the new dike, as specified herein and shown on the Contract Drawings, shall be paid in accordance with Bid Item No. 0004, Stonework.

1.9 ACCEPTANCE CRITERIA

1.9.1 Final Examination and Acceptance of the Project.

The project will be examined for acceptance at the completion of the contract. Final surveys of all interior dikes shall be completed by the Contractor's independent surveyor within 30 days prior to the final inspection of the project as scheduled by the Contracting Officer. Any portion of the previously accepted perimeter dike which required repair of damage from construction activity shall be resurveyed for acceptance as

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PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION (Not Applicable)

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ADMINISTRATIVE REQUIREMENTS

08/15

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced.