Amendment 2 - Revised Specifications.pdf

PL 84-99 Emergency Repairs, Site 0561-31 Spec No. 2214 Site 0561-31 Sacramento River

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 00 00

GENERAL REQUIREMENTS

05/17

PART 1 GENERAL

1.1 PAYMENT

1.2 REFERENCES

1.3 VETERANS EMPLOYMENT EMPHASIS FOR U.S. ARMY CORPS OF ENGINEERS

CONTRACTS

1.4 SUBMITTALS

1.5 PARTNERING

1.5.1 Informal Partnering

1.6 UTILITIES

1.7 PLANNED UTILITY OUTAGES AND STREET CLOSURES

1.8 TIME EXTENSIONS FOR UNUSUALLY SEVERE WEATHER

1.9 BID ITEM OVERRUN

1.10 WARRANTY OF CONSTRUCTION

1.11 NON CONTRACT WORK

1.12 DAMAGE TO ROADS

1.12.1 Documentation Regarding Potential Damage to Access Routes

1.12.1.1 Preconstruction Quantity Survey Plan

1.12.1.2 Preconstruction Access Road Survey

1.12.1.3 Post-Construction Access Road Survey

1.13 LEVEE QUANTITY SURVEY

1.13.1 Preconstruction Levee Survey

1.13.2 Post-Construction Levee Survey

1.13.3 Borrow Site

1.14 ENVIRONMENTAL LITIGATION

1.15 ADDITIONAL STAGING AREAS

1.16 LEVEE DEGRADE CONSTRUCTION WINDOW

PART 2 PRODUCTS

2.1 GOVERNMENT FURNISHED MATERIALS

PART 3 EXECUTION

3.1 AFTER AWARD DOCUMENTS

-- End of Section Table of Contents --

SECTION 01 00 00 Page 1

AM0003

SECTION 01 00 00

GENERAL REQUIREMENTS

05/17

PART 1 GENERAL

1.1 PAYMENT

No separate payment will be made for the work covered under this Section and all costs in connection therewith will be considered a subsidiary obligation.

1.2 REFERENCES

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

U.S. ARMY CORPS OF ENGINEERS (USACE)

ER 415-1-15 (1989) Construction Time Extensions for Weather

1.3 VETERANS EMPLOYMENT EMPHASIS FOR U.S. ARMY CORPS OF ENGINEERS CONTRACTS

In addition to complying with the requirements outlined in FAR Part 22.13, FAR Provision 52.222-38, FAR Clause 52.222-35, FAR Clause 52.222-37, DFARS

222.13 and Department of Labor regulations, U.S. Army Corps of Engineers (USACE) Contractors and subcontractors at all tiers are encouraged to promote the training and employment of U.S. veterans while performing under a USACE Contract. While no set-aside, evaluation preference, or incentive applies to the solicitation or performance under the resultant Contract, USACE Contractors are encouraged to seek out highly qualified veterans to perform services under this Contract. The following resources are available to assist USACE Contractors in their outreach efforts:

Federal Veteran employment information at http://www.fedshirevets.gov/index.aspx

Department of Labor Veterans Employment Assistance http://www.dol.gov/vets/

Department of Veterans Affairs-VOW to Hire Heroes Act http://benefits.va.gov/vow/

Army Wounded Warrior Program -http://wtc.army.mil/modules/employers/index.html

U.S. Chamber of Commerce Foundation-Hiring Our Heroes http://www.hiringourheroes.org/

Guide to Hiring Veterans - Reference Material http://www.whitehouse.gov/sites/default/files/docs/white_house _business_council_-_guide_to_hiring_veterans_0.pdf

SECTION 01 00 00 Page 2

1.4 SUBMITTALS

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Preconstruction Submittals

Preconstruction Quantity Survey Plan ; G

Preconstruction Access Road Survey

Preconstruction Levee Survey ; G

After Award Documents

SD-11 Closeout Submittals

Post-construction Access Road Survey

Post-Construction Levee Survey ; G

1.5 PARTNERING

To most effectively accomplish this Contract, the Government requires the formation of a cohesive partnership within the Project Team whose members are from the Government Construction Team, the Contractor and their Subcontractors. Key personnel from the Government Construction team, Construction Subject Matter Experts, the Contractor and Subcontractors, will be invited to participate in the Partnering process. The Partnership will draw on the strength of each organization in an effort to achieve a project that is without any safety mishaps, conforms to the Contract, and stays within budget and on schedule. Small projects should have an Issue Resolution Matrix at a minimum. As project increase in size/complexity, the partnering processes will expand accordingly.

1.5.1 Informal Partnering

The Contracting Officer will organize the Partnering Sessions with key personnel of the project team, including Contractor personnel and Government personnel. The Initial Partnering session will be a part of the Pre-Construction Meeting. Partnering sessions will be held at a location agreed to by the Contracting Officer and the Contractor. The Initial Informal Partnering Session will be conducted and facilitated using electronic media (a video and accompanying forms) provided by the Contracting Officer. The Partners will determine the frequency of the follow-on sessions, at no more than three to six month intervals.

Informal Partnering is led by Resident Engineer personnel at the Pre-Construction Conference.

1.6 UTILITIES

It is anticipated that pole lines, signs, pipelines and private improvements that would interfere with or are to be replaced by new construction will be removed to new locations by the owners (or by the State of California or its agents) in advance of construction operations.

Notify the Contracting Officer at least 30 calendar days in advance of the date on which work will be started requiring the removal of such utilities or private improvements. Care must be taken to preserve and protect any such improvements from injury or damage during construction operations.

SECTION 01 00 00 Page 3

Assume full responsibility for reimbursing the owners for any damage to their properties, utilities, or improvements, or interference with their services caused through construction operations. Should such damage be found to have been caused without the Contractor's fault or negligence an equitable adjustment in the amount due under the Contract will be made under the applicable CONTRACT CLAUSES. If unplanned utilities are discovered during construction the Contractor must notify the Contracting Officer.

The Contractor shall coordinate with utility owners and the Contracting Officer for utilities identified to be protected in place on the Plans.

Contact information for utility owners are shown on the Plans.

1.7 PLANNED UTILITY OUTAGES AND STREET CLOSURES

Power outages must be restricted to off-duty hours and weekends. Other utilities may be connected and streets closed during normal working hours with the outage duration and street closure as short as possible. All outages and street closures must be scheduled as far in advance as possible with the Contracting Officer and in no case less than 7 days before the outage or closure.

1.8 TIME EXTENSIONS FOR UNUSUALLY SEVERE WEATHER

This provision specifies the procedure for the determination of time extensions for unusually severe weather. In order for the Contracting Officer to award a time extension under this clause, the following conditions must be satisfied:

a. The weather experienced at the project site during the Contract period must be found to be unusually severe, that is, more severe than the adverse weather anticipated for the project location during any given month.

b. The unusually severe weather must actually cause a delay to the completion of the project. The delay must be beyond the control and without the fault or negligence of the Contractor.

The following schedule of monthly anticipated adverse weather delays is based on National Oceanic and Atmospheric Administration (NOAA) or similar data for the project location and will constitute the base line for monthly weather time evaluations. The Contractor's progress schedule must reflect these anticipated adverse weather delays in all weather-dependent activities.

MONTHLY ANTICIPATED ADVERSE WEATHER DELAY

WORK DAYS BASED ON (5) DAY WORK WEEK

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

8 7 7 3 2 0 0 0 1 2 5 8

Upon execution of the Notice to Proceed (NTP) and continuing throughout the Contract, the Contractor will record on the daily CQC report, the occurrence of adverse weather and resultant impact to normally scheduled work. Actual adverse weather delay days must prevent work on critical activities for 50 percent or more of the Contractor's scheduled work day.

SECTION 01 00 00 Page 4

Refer to ER 415-1-15 .

1.9 BID ITEM OVERRUN

Throughout the Contract (at a minimum, every two weeks), monitor placement or installation of unit price items (if any) with respect to the original estimated quantities shown in the Contract. If placement or installation indicates a possible overrun with respect to the original estimated quantities shown in the Contract, immediately provide written notification to the Contracting Officer with revised total estimated quantities.

1.10 WARRANTY OF CONSTRUCTION

a. Performance Bond.

(1) It is understood that the Contractor's Performance Bond will remain effective throughout the life of all warranties and warranty extensions.

(2) In the event the Contractor or his designated representative fails to commence and diligently pursue any work required under the Warranty of Construction Section of the Technical Provisions within a reasonable time after receipt of written notification pursuant to the requirements thereof, the Contracting Officer must have a right to demand that said work be performed under the Performance Bond by making written notice on the surety. If the surety fails or refuses to perform the obligation it assumed under the Performance Bond, the Contracting Officer must have the work performed by others, and after completion of the work, must make demand for reimbursement of any or all expenses incurred by the Government while performing the work, including, but not limited to administrative expenses.

(3) Warranty repair work which arises to threaten the health or safety of personnel, the physical safety of property or equipment, or which impairs operations, habitability of living spaces, etc., will be handled by the Contractor on an immediate basis as directed verbally by the Contracting Officer or his authorized representative. Written verification will follow verbal instructions. Failure of the Contractor to respond as verbally directed will be cause for the Contracting Officer or his authorized representative to have the warranty repair work performed by others and to proceed against the Contractor as outlined in the paragraph b. above.

1.11 NON CONTRACT WORK

Do not perform any work or erect any structure for third parties, landowners or otherwise, within the limits of construction shown on the Plans without prior approval of the Contracting Officer.

1.12 DAMAGE TO ROADS

Preserve and protect all existing private or private project access or right-of-way roads. At the completion of work and prior to the Contractor leaving the project, he must restore to pre-project conditions all such roads. Repairs must include replacement of base rock and/or surface treatment as required. Refer also to paragraph PROTECTION OF TRAFFIC in Section 01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS.

SECTION 01 00 00 Page 5

1.12.1 Documentation Regarding Potential Damage to Access Routes

1.12.1.1 Preconstruction Quantity Survey Plan

Complete and submit a Preconstruction Quantity Survey Plan stating the names of personnel and license number who will be performing the Before Construction (BC) survey, plus the procedures to be followed in conducting the BC Survey. Surveys must be performed by a licensed surveyor in the State of California. The plan must also include the Preconstruction Access Road Survey and the Post-Construction Access Road Survey.

1.12.1.2 Preconstruction Access Road Survey

Complete and submit a Preconstruction Access Road Survey including digital video and digital photographs of all public, private, and project access or right-of-way roads as noted on the Plans before construction begins.

Submit two copies of the survey, the digital video, and the digital photographs before the start of construction operations. Video must be digital format. Photographs must be digital prints.

1.12.1.3 Post-Construction Access Road Survey

After completion of construction of the project, submit a Post-Construction Access Road Survey including digital video and digital photographs of the same area where preconstruction digital video and digital photographs were taken. Submit two copies of the survey, the digital video, and digital photographs.

1.13 LEVEE QUANTITY SURVEY

1.13.1 Preconstruction Levee Survey

Survey cross sections before construction begins (see submittal "Preconstruction Levee Survey"), along the entire length of the construction site. These preconstruction survey cross sections will be used to reflect existing ground before any construction activities begin and will also be used as the original ground surveys when checking measurement for pay quantities as described in Section 01 22 00 PRICE AND PAYMENT PROCEDURES and Section 31 00 00 EARTHWORK. Cross sections must be surveyed perpendicular to the setback levee control line shown on the Plans. Points along the cross sections must be surveyed within 10 feet of each other. Where applicable, perform a profile survey of the top of the levee along the entire length where the road is used for access.

Cross sections along the Control Line shown on the Plans shall include the entire existing levee embankment where the existing levee will be excavated and reconstructed and continue out to a point at least 10 horizontal feet past the completed work on both the waterside and landside and 10 feet beyond the limits of excavation. Elevations must be taken at inflection points but at not more than 5 feet intervals to the nearest 0.1 feet. Horizontal locations must not deviate from the alignment of the cross section line by more than 1 foot. All cross sections must be plotted as viewed in the downstream direction. The survey data must be provided to the Contracting Officer on Compact Disk containing survey control and cross section points defined in the form of Northing and Easting coordinates and their elevations (i.e., X, Y and Z). Horizontal control must be referenced to the North American Datum (NAD) of 1983.

Vertical control must be the North American Vertical Datum (NAVD) of

SECTION 01 00 00 Page 6

1988. Survey data must be provided in English units in AutoCAD 2016 format (Name.DWG).

Provide the Contracting Officer the survey data files, one set of the cross section data, plotted as viewed in the downstream direction, with a 5 horizontal X 2 vertical grid, on a standard D size drawing sheet, at a scale of 1:10, horizontal and vertical. The Contractor is responsible for preparing any needed layout drawings. Standard cross section plotting paper with pre-printed red grid is not acceptable.

1.13.2 Post-Construction Levee Survey

Provide to the Contracting Officer surveyed cross sections taken after the placement of compacted fill. Take cross sections at the same locations as the Preconstruction Levee Survey cross section, referenced in this Section. All surveys must be performed by a licensed surveyor in the State of California.

1.13.3 Borrow Site and Disposal Site

The Contractor shall prioritize use of excavated soil for construction of the Project provided the soils meet the requirements of Section 31 00 00.

Additional fill materials shall be acquired from commercial borrow site at the Contractor's expense. The Contractor shall determine that borrow area is Federally approved and State of California approved. Excess excavated material shall be sent to a commercial disposal site at the Contractor's expense.

1.14 ENVIRONMENTAL LITIGATION

a. If the performance of all or any part of the work is suspended, delayed, or interrupted due to an order of a court of competent jurisdiction as a result of environmental litigation, as defined below, the Contracting Officer, at the request of the Contractor, must determine whether the order is due in any part to the acts or omissions of the Contractor or a subcontractor at any tier not required by the terms of this Contract. If it is determined that the order is not due in any part to acts or omissions of the Contractor or a subcontractor at any tier other than as required by the terms of this Contract, such suspension, delay, or interruption must be considered as if ordered by the Contracting Officer in the administration of this Contract under the terms of the SUSPENSION OF WORK clause of this Contract. The period of such suspension, delay or interruption must be considered unreasonable, and an adjustment must be made for any increase in the cost of performance of this Contract (excluding profit) as provided in that clause, subject to all the provisions thereof.

b. The term "environmental litigations" as used herein, means a lawsuit alleging that the work will have an adverse effect on the environment or that the Government has not duly considered, either substantively or procedurally, the effect of the work on the environment.

1.15 ADDITIONAL STAGING AREAS

The Contractor is required to use the proposed staging areas shown on the Plans for offices and staging. If alternative sites are determined to be necessary, they must be near the project and the Contractor must make all arrangements including but not limited to clearance of non-sensitive

SECTION 01 00 00 Page 7 archeological and environmental sites for their use at the Contractor's expense and must be approved by the Government prior to use..

1.16 LEVEE DEGRADE CONSTRUCTION WINDOW

Excavation of the existing levee at the setback levee tie-in locations shall not begin prior to June 1. Restoration of the existing levee and tie-in shall be completed by September 15.

PART 2 PRODUCTS

2.1 GOVERNMENT FURNISHED MATERIALS

The Government will provide an optical disc at the preconstruction conference that contains the materials specified in Section 01 78 00

CLOSEOUT SUBMITTALS.

PART 3 EXECUTION

3.1 AFTER AWARD DOCUMENTS

Provide five conformed hard copy sets reproduced from the PDF Contract plans and specification provided by the Contracting Officer at the time of award. The hard copy drawings must be two sets of ANSI D (22" x 34")and three sets of half size (11" x 17") 3-hole punched and bound with metal posts. The five sets of specifications must be standard letter (8-1/2" x 11") 3-hole punched and bound with metal posts. Submit these documents within 5 work days of the receipt of the AWARD documents from the Government .

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SECTION 01 00 00 Page 8

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 00 00

EARTHWORK

PART 1 GENERAL

1.1 REFERENCES

1.2 DEFINITIONS

1.2.1 Fill Material

1.2.1.1 Levee Fill

1.2.2 Degree of Compaction

1.2.3 Earthwork Contractor

1.3 QUALIFICATIONS

1.3.1 Field Quality Control Representative

1.4 SUBMITTALS

1.5 GENERAL CONDITIONS

1.5.1 Lines and Grades

1.5.2 Conduct of the Work

1.5.3 Fill Materials

1.5.4 Haul Roads, Working Surfaces, and Temporary Ramps

1.5.5 Excavations

1.5.6 Slides and Foundation Failures

1.5.7 Drainage Requirements

1.5.8 Stockpile of Excavated Soils

1.5.9 Utilities

1.5.10 Protection of Existing Man-Made Facilities and Natural

Features

PART 2 PRODUCTS

2.1 MATERIALS

2.2 TYPES OF FILL MATERIALS

2.2.1 Levee Fill

2.2.2 Top Soil

2.3 IMPORTED FILL

2.3.1 General Chemical Testing Requirements

2.3.2 Borrow Site Soil Sampling Work Plan

2.3.3 Sample Collection

2.3.4 Chemical Testing

2.3.5 Soluable Constituent Testing

2.3.6 Potential Contaminants of Concern and Screening Criteria

2.3.7 Sampling Cost

2.3.8 Borrow Area Chemical Suitability Certification Report

PART 3 EXECUTION

3.1 TOLERANCES

3.2 PREPARATION OF FOUNDATION, PARTIAL FILL SURFACES AND EMBANKMENTS

3.2.1 Foundation Preparation

3.2.2 Benching

3.2.3 Shoring and Sheeting

3.2.4 Dewatering

SECTION 31 00 00 Page 1

3.3 EXCAVATION

3.3.1 Levee Excavation

3.3.2 Over-Excavation

3.3.3 Slopes and Surcharges

3.4 PLACEMENT AND SPREADING

3.4.1 General

3.4.1.1 Gradation and Distribution

3.4.1.2 Foundations and Partial Embankment Fills

3.4.1.3 Equipment Traffic

3.4.2 Fill Materials

3.4.3 Top Soil

3.4.4 Erosion Control Seeding

3.5 MOISTURE CONTROL

3.5.1 General

3.5.1.1 Insufficient Moisture for Suitable Bond

3.5.1.2 Excessive Moisture for Suitable Bond

3.5.1.3 Drying Wet Material

3.5.1.4 Increasing Moisture in Dry Material

3.5.2 Moisture Content Requirements

3.6 COMPACTION

3.6.1 Compaction Equipment

3.6.1.1 Tamping Rollers

3.6.1.2 Vibratory Rollers

3.6.1.3 Hand Operated Compactors

3.6.1.4 Crawler-Type Tractors/Dozers

3.6.1.5 Heavy Duty Disk Harrows

3.6.1.6 Miscellaneous Equipment

3.6.2 Compaction of Fill

3.7 STOCKPILES

3.8 FIELD QUALITY CONTROL

3.8.1 General

3.8.2 Embankment and Fill Testing

3.8.3 Reporting

3.9 ACCEPTANCE

ATTACHMENTS:

Imported Fill Chemical Screening Limits

-- End of Section Table of Contents --

SECTION 31 00 00 Page 2

SECTION 31 00 00

EARTHWORK

PART 1 GENERAL

The work covered by this section consists of furnishing all plant, labor, equipment, and materials and of performing all operations in connection with earthwork, in accordance with these Specifications and applicable Plans. Excavation and reconstruction/modification of the existing levee embankment will be required in order to construct a new setback levee embankment and seepage berm. Levee and berm fill materials will consist of imported borrow materials and excavated materials, if meeting or blended to meet project criteria.

1.1 REFERENCES

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

ASTM INTERNATIONAL (ASTM)

ASTM D1140 (2000; R 2006) Amount of Material in Soils Finer than the No. 200 (75-micrometer) Sieve

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

ASTM D2216 (2010) Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass

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

ASTM D3740 (2012a) Minimum Requirements for Agencies Engaged in the Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

ASTM D4318 (2017; E 2018) Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils

ASTM D4643 (2017) Standard Test Method for Determination of Water Content of Soil and Rock by Microwave Oven Heating

ASTM D6913 (2004; R 2009; E 2014) Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis

SECTION 31 00 00 Page 3

ASTM D6938 (2017a) Standard Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)

ASTM D698 (2012; E 2014; E 2015) Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/cu. ft.

(600 kN-m/cu. m.))

U.S. ARMY CORPS OF ENGINEERS (USACE)

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

ER 1110-1-261 (1999) Quality Assurance of Laboratory Testing Procedures

1.2 DEFINITIONS

1.2.1 Fill Material

The terms "embankment" or "fill" or "backfill" as used in these Specifications are defined as the earth fill portions of the levee embankment structure, other fills related to the levee, or other fills within the limits of the project.

1.2.1.1 Levee Fill

Levee fill shall be free from debris and unsuitable materials and meet the requirements of Paragraph 2.2 TYPES OF FILL MATERIALS. Materials shall not be classified as unsuitable based solely on moisture content. Material containing roots greater than 1/2-inch in diameter, debris, rubble, trash or other deleterious items shall be classified as unsuitable materials.

Unsuitable materials shall be disposed of in accordance with all applicable laws and regulations. Soils containing visible concentrations of organics or classified as organic clay or organic silt (OH or OL) are unsuitable, except for top soil strippings to be respread on levee slopes.

1.2.2 Degree of Compaction

Degree of compaction shall be expressed as a percentage of the maximum density obtained by the test procedure presented in ASTM D698, abbreviated herein as percent of laboratory maximum density.

1.2.3 Earthwork Contractor

The Earthwork Contractor shall be the company/business performing the work. Earthwork Contractor shall meet the requirements of Paragraph 1.3

QUALIFICATIONS.

1.3 QUALIFICATIONS

1.3.1 Field Quality Control Representative

The earthwork contractor shall maintain a field quality control representative (FQCR) of an independent testing laboratory at the site on a full-time basis to perform inspection and testing in accordance with

SECTION 31 00 00 Page 4 paragraph 3.8 FIELD QUALITY CONTROL. The individual shall have served in the FQCR role on at least three levee projects completed in the last 10 years and have experience in all aspects of earthwork construction.

1.4 SUBMITTALS

The following shall be submitted in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Excavation Plan ; G

Pre-Construction Access Road Survey

Pre-Construction Levee Survey; G

Equipment Data ; G

Shoring and Sheeting Plan ; G

Plan of Operations ; G

Flood Stage Contingency Plan ; G

Borrow Area Chemical Suitability Certification Report

Borrow Site Soil Sampling Work Plan

Borrow Site Excavation Plan

Material Stockpile Plan ; G

SD-03 Product Data

Embankment and Backfill Materials ; G

SD-09 Manufacturer's Field Reports

Quality Control Testing ; G

Test Data Summaries ; G

Construction Verification Survey Report ; G

SD-11 Closeout Submittals

Post-Construction Access Road Survey ; G

Post-Construction Levee Survey ; G

1.5 GENERAL CONDITIONS

1.5.1 Lines and Grades

The Contractor shall submit a Preconstruction Access Road Survey and a Post-Construction Access Road Survey showing adequate detail per Paragraph

1.12 of Section 01 00 00 GENERAL REQUIREMENTS.

SECTION 31 00 00 Page 5

The portion of existing levee removed for construction of the setback levee shall be constructed to meet pre-construction lines and grades as determined by surveys noted in Paragraph 1.13 of Section 01 00 00 GENERAL REQUIREMENTS. Submit copies of the Preconstruction Levee Survey and the Post-Construction Levee Survey in accordance with Section 01 00 00 GENERAL REQUIREMENTS. Submit written certification that the data is accurate and surveying was performed by a licensed surveyor authorized to practice land surveying in the State of California. Submit all data within 24 hours of performing field surveys per Paragraph 1.13 of Section 01 00 00 GENERAL

REQUIREMENTS.

Where variations are noted on the Plans, the embankments and backfills shall be constructed to the lines, grades, and cross sections indicated on the Plans, unless otherwise directed by the Contracting Officer. The Contracting Officer reserves the right to increase or decrease the foundation widths and embankment slopes or to make such other changes in the embankment or backfill sections as may be deemed necessary to produce a safe structure. Changes in quantities resulting from such revisions will not constitute justification for change in contract unit prices, except as provided for in Section 01 00 00 GENERAL REQUIREMENTS.

1.5.2 Conduct of the Work

Twenty days prior to commencement of haul road construction or placing embankment and backfill, whichever is earlier, the Contractor shall submit for review a Plan of Operations for accomplishing all embankment and backfill construction and for the location and construction of haul roads.

The plan shall be reviewed and approved by the Contracting Officer prior to the start of Work. This plan shall include, but not be limited to, the Contractor's proposed sequence of construction for embankment and backfill items, and methods and types of equipment to be utilized for all embankment and backfill operations, including excavating, processing, transporting, placing, disking, moisture conditioning, compacting and testing. This plan shall also include the names and addresses of the commercial testing labs which will perform the soil testing and inspection and describe how all required soils testing will be performed and reported. The Plan of Operations shall demonstrate intent to re-use excavation of existing levee and foundation soils. The requirements for independent testing laboratories shall meet requirements of Section

01 45 00 QUALITY CONTROL.

The Contractor shall maintain and protect the embankment, backfill, and any identified existing structures, utilities, and trees in a satisfactory condition at all times until final completion and acceptance of all work under the Contract. The Contractor shall submit a list of equipment data used for hauling, fill placement, compaction, and sprinkling equipment and include weights, size, and contact pressures as part of the Plan of Operations. If the hauling equipment causes horizontal shear planes or slickensides, rutting, quaking, heaving, cracking, or excessive deformation of the embankment or backfill, the Contractor shall limit the type, load, or travel speed of the hauling equipment on the embankment or backfill. The Contractor may be required to remove, at his own expense, any embankment material placed outside of prescribed slope lines. Any approved embankment or backfill material which is lost in transit or rendered unsuitable after being placed in the embankment or backfill and before final acceptance of the work shall be replaced by the Contractor in a satisfactory manner and no additional payment will be made. The Contractor shall excavate and remove from the embankment or backfill any material which is unsatisfactory and shall also dispose of such material

SECTION 31 00 00 Page 6 and refill the excavated area as directed, all at no cost to the Government.

The Contractor shall restore all disturbed roads and areas to the pre-construction condition.

1.5.3 Fill Materials

Submit a Borrow Site Excavation Plan that describes where offsite material will be obtained, placed, stockpiled and blended with onsite excavation soils for usage or for temporary disposal. The plan shall provide clear descriptions of exploration, sampling, and investigations and shall describe how sufficient materials will be obtained from the proposed borrow source.

This information shall be submitted within 10 days after the notice to proceed and at least 30 days before materials are brought on site.

Describe how materials excavated from the borrow area shall be identified to allow field personnel to determine the appropriate end use of the material.

Materials for levee and berm construction shall be suitable materials obtained from the Contractor selected borrow areas and project excavations. The Contractor shall blend and reuse project excavations to the maximum extent possible. Materials shall be blended at the approved staging area(s). Off-site borrow materials shall be blended and mixed at the borrow site and then tested for suitability prior to transport to site.

Material not meeting the specified requirements shall be hauled off site and disposed of in a legal manner.

Settlement during construction of the proposed setback levee is anticipated to be less than 6 inches. The Contractor shall provide sufficient borrow materials to construct the setback levee to the line and grade shown on the Plans to accommodate this anticipated settlement.

1.5.4 Haul Roads, Working Surfaces, and Temporary Ramps

Haul roads, working surfaces, and temporary ramps shall be located and constructed within the construction limits shown on the Plans. Prior to the commencement of construction the Contractor shall submit for review a site plan detailing the location of all haul roads and temporary ramps within the construction limits.

Haul roads, working surfaces, and temporary ramps shall be constructed to maintain the intended traffic and be maintained in good condition throughout the contract period. Haul roads and ramps which cross any creek or drainage channel shall be constructed and maintained by the Contractor so as to not flood either upstream areas by restricting stream flows or flood downstream areas by the release of any stored water in the event that the crossing fails for any cause. Haul roads, working surfaces, and ramps constructed during the contract duration shall be removed after work is completed and the impacted area restored to its preconstruction conditions. All costs associated with these haul roads and ramps shall be considered as a subsidiary obligation of the Contractor. The Contractor shall have access to the landside levee toe for hauling of materials and equipment provided all work is coordinated with the Contracting Officer.

SECTION 31 00 00 Page 7

1.5.5 Excavations

The Contractor shall submit a written Excavation Plan a minimum of 20 days prior to the beginning of any excavation work. This plan shall be reviewed and approved by the Contracting Officer prior to starting any excavation work. The plan shall be modified as required to meet field, river stage, and flood/weather season conditions, and the modifications shall be reviewed prior to use. As a minimum, the plan shall include the following:

a. Proposed methods for preventing interference with, or damage to, existing underground and overhead utility lines, trees designated to remain, and other existing improvements or natural features designated to remain within or adjacent to the construction right-of-way.

b. The proposed methods for controlling surface water and groundwater in the excavations.

c. Stockpiling and blending plan for embankment material showing locations, stockpile heights, slopes, limits, and drainage around the stockpile areas.

d. Methods and equipment to be used in the removal of existing concrete lining in drainage channel within footprint of setback levee embankment.

e. A complete listing of equipment used for excavation and transport of the excavated material.

f. The Contractor's proposed sequence of work for excavating with plan and cross- sectional views showing starting and final work locations and clearing, grubbing and stripping limits.

g. The Contractor's proposed road pattern and plan for implementing dust control measures.

1.5.6 Slides and Foundation Failures

The Contractor shall repair any sliding that occurs in any part of the existing embankment and backfills prescribed in this section prior to final acceptance of the work. When the slide is caused through the fault of the Contractor, the repair shall be made at no cost to the Government.

The Contracting Officer shall be the sole judge of whether a slide or foundation failure is caused through a fault of the Contractor. The Contractor shall submit a plan detailing how the repair will be completed.

The plan shall be reviewed and approved by the Contracting Officer prior to the start of repair work. When the slide is not the fault of the Contractor, an extension of the unit prices for excavation and embankment shall be made to cover the cost of the repairs.

1.5.7 Drainage Requirements

The Contractor shall not block or restrict the flow in a natural drain, existing culvert, ditch or channel at any time without obtaining prior written approval. This approval shall not relieve the Contractor from responsibility for any damage caused by his operation. The Contractor shall monitor the channel flow and provide sufficient free discharge areas so that conditions are not worsened upstream or downstream by possible floods during construction. Surface water shall be directed away from excavations and construction sites so as to prevent erosion and

SECTION 31 00 00 Page 8 undermining of foundations. Diversion ditches, dikes, and grading shall be provided and maintained as necessary during construction. Excavated slopes and backfill surfaces shall be protected to prevent erosion and sloughing.

Excavation shall be performed so that the site and the area immediately surrounding the site and affecting operations at the site shall be continually and effectively drained. If private property is to be used for drainage, the Contractor shall submit written evidence that the right has been obtained from the property owner for drainage on his property. After construction, natural drains, existing culverts, ditches and channels affected by construction shall be restored to their preconstruction condition.

1.5.8 Stockpile of Excavated Soils

Excavated soils not used for construction of the setback levee and berm shall be stockpiled within the locations shown on the Plans. Stockpile Area 1S shall be filled to the dimensions shown on the Plans prior to the use of the stockpile within Staging Area 2. The dimensions for the stockpiles shown on the Plans are approximate and final dimensions will depend on the amount of excavated material that does not meet and cannot be blended to meet the requirements for Levee Fill below.

No ground disturbance shall be allowed within Stockpile Area 1S. The stipulation of no ground disturbance is herein defined as no alteration to the existing ground surface through clearing and grubbing or leveling.

Removal of vegetation through mowing would be allowed. The Contractor shall place a layer of geotextile as shown on the Plans and in accordance with Section 31 05 19 GEOTEXTILE before the placement of fill. The Contractor shall submit a Material Stockpile Plan a minimum of 20 days prior to excavation of the existing levee. The Plan shall outline the equipment to be used for placement of stockpiled soils and the methods to be used to provide stability of the stockpile slopes. The removal of the stockpiled material shall also adhere to no ground disturbance. The material can be mechanically removed to within 4 to 6 inches of the fabric, then removal of material must be by hand to ensure that no ground disturbance occurs.

1.5.9 Utilities

Movement of construction machinery and equipment over or near utilities (including underground and overhead utilities) during construction shall be at the Contractor's risk and shall adhere to the requirements of EM 385-1-1 and any other applicable utility agency requirements. Utility lines damaged during construction shall be immediately reported to the Contracting Officer and repaired at the Contractor's expense. Contractor shall obtain a current USA clearance for excavation area of project.

1.5.10 Protection of Existing Man-Made Facilities and Natural Features

Embankment excavation and fill/backfilling shall be conducted in such a manner as to avoid damage to trees outside the excavation areas, existing buildings, man-made facilities and natural features, with due regard to the safety of employees and others.

PART 2 PRODUCTS

2.1 MATERIALS

A least 30 days prior to delivery of any offsite borrow material to the

SECTION 31 00 00 Page 9 site, submit soil test results for embankment and backfill materials for review and approval by the Contracting Officer. Contractor shall provide sufficient testing to show that proposed borrow areas have an adequate quantity of satisfactory soils to meet the requirements for the materials purpose.

Project fills shall be constructed of suitable earth materials as defined in paragraph 1.2 DEFINITIONS and as required below in paragraph 2.2 TYPES OF FILL MATERIALS and obtained from project excavations or the borrow site(s). The Contractor shall prioritize the reuse of project excavations to construct the setback levee and berm. Materials shall be screened of oversize material and blended as needed to obtain a blended material suitable for construction meeting the fill requirements outlined in these Specifications. Materials shall be screened, blended and tested for suitability at the borrow site, at staging/stockpile areas, or at other designated areas approved by the Contracting Officer. The test results and suitability of fill material shall be reviewed and approved by the Contracting Officer prior to placement. Soil classification tests shall be completed for all blended material in accordance with ASTM D2487.

If a disagreement between the Contractor and Contracting Officer occurs over the suitability of fill materials, the Contractor shall perform laboratory testing as directed by the Contracting Officer to demonstrate compliance with the Specifications at no additional cost to the Government. This testing shall comply with paragraph 3.8 FIELD QUALITY CONTROL. The failure of the Contractor to perform this testing shall not relieve the Contractor from the obligation to provide suitable materials.

2.2 TYPES OF FILL MATERIALS

2.2.1 Levee Fill

Levee Fill material shall be obtained from project excavations and from Contractor-provided borrow site(s) and shall meet the following requirements:

GRADATION ASTM TEST PROCEDURE

Si eve Si ze Per cent Passi ng

2-inch 100 ASTM D6913

No. 200 >= 35 <= 75

ASTM D1140

Liquid Limit <= 45 ASTM D4318 (wet preparation method)

Plasticity >= 10 and <= 30 ASTM D4318(wet preparation method)

2.2.2 Top Soil

Materials for top soil shall be free of stones, lumps, and roots larger than 1 inch and shall not contain debris, herbicides, insecticides or other pesticides, salts, or other chemical compounds toxic to plant growth, aquatic flora and fauna or humans. Materials generated from

SECTION 31 00 00 Page 10 stripping operations shall be reused as Top Soil.

2.3 IMPORTED FILL

Imported Fill must meet the requirements of Paragraph 2.3.1 CHEMICAL TESTING REQUIREMENTS FOR OFFSITE SOILS. All testing data for imported fill must be submitted no later than 30 calendar days after execution of the

NTP.

2.3.1 General Chemical Testing Requirements

Offsite soils must be chemically tested prior to being considered as fill material onsite. Submit a work plan to the Contracting Officer for approval in accordance with Paragraph 2.3.2 BORROW SITE SOIL SAMPLING WORK PLAN. Conduct the sampling activities according to the approved plan. The sample results must then be compared against the "Imported Fill Chemical Screening Limits" values attached to this specification.

The Contractor is responsible for ensuring that the testing is performed and the results are submitted as part of the Borrow Area Chemical Suitability Report. The Borrow Area Chemical Suitability Report must meet the requirements outlined in paragraph titled Borrow Area Chemical Suitability Certification Report. Material from a borrow area can be brought onsite only after the Contracting Officer has provided approval confirming that the material meets the soil screening criteria.

2.3.2 Borrow Site Soil Sampling Work Plan

Within 14 days after the NTP and at least 30 days prior to the sampling activities at any borrow site, a plan including, but not limited to, the number of samples, sample methods and analysis, sample procedures, laboratory who is performing the analysis, and quality control and quality assurances, is to be provided to the Contracting Officer for approval. The Contractor must not collect any samples at the borrow site before the Government's approval. The work plan must be certified by California-licensed professional engineer or geologist.

2.3.3 Sample Collection

The soil samples must be collected from evenly distributed locations across the borrow site so that the analytical results are as close as possible to being representative of each overall site. Samples must be preserved, transported and analyzed in accordance with EPA SW-846.3-3. The discrete soil samples from the borrow site must normally be composited into one sample by the analytical laboratory for analyses; individual site conditions, however, may also dictate that the discrete samples be analyzed separately. Sample collection locations should be noted in the field and recorded in latitude-longitude and/or California State Plane coordinate formats.

2.3.4 Chemical Testing

All borrow site soil must undergo a solids analysis for undesirable constituents. The soil constituent concentrations must then be compared against the values in the attached "Imported Fill Chemical Screening Limits". In the event any of those limits are exceeded, perform testing to determine the potential soluble concentration of the constituent(s). All analysis must be performed at a facility that is ELAP/NELAP certified for the methods used.

SECTION 31 00 00 Page 11

2.3.5 Soluable Constituent Testing

Soluble constituent testing must only be required in the event that the constituent concentration was above the Maximum Concentration for Solids Analysis value provided in the "Imported Fill Chemical Screening Limits".

The soluble analyses must be conducted using the Waste Extraction Test procedure (WET) to generate an extractant that can be tested. Analysis on the extractant must include ONLY the constituents listed as having a Soluble Threshold Limit Concentration (STLC) in the attached "Imported Fill Chemical Screening Limits".

2.3.6 Potential Contaminants of Concern and Screening Criteria

Due to the growing concern over the suitability of borrow material, increased testing requirements have been initiated. The soil must be tested for total concentrations of screening constituents. Attached to this specification is a list of constituents, "Imported Fill Chemical Screening Limits" that are to be included in the analysis. The tested borrow site soil is to be compared against the Maximum Concentration for Solids Analysis in mg/kg. In the event that the concentration of a constituent is above the 'Maximum Concentration for Solids Analysis as indicated hereafter, then the soluble extractible levels of that constituent must be analyzed. To perform the soluble testing, the soil must undergo a Waste Extraction Test (WET) and the extractant must be tested and compared against the Soluble Threshold Limit Concentration (STLC) value(s). In the event that the screening limits are exceeded (or there is no STLC value to compare against), the Contractor can choose to determine natural background concentrations of the constituent(s) in the region of the project site. This background level can be determined through composite testing of the new placement site. If the background value is found higher than limits provided, the Contractor can use the information as justification of potentially exceeding the limit(s). This justification must be submitted to the Contracting Officer for review and final determination of acceptability will be provided to the Contractor.

2.3.7 Sampling Cost

All costs associated with the chemical sampling shall be coordinated and paid for by the Contractor.

2.3.8 Borrow Area Chemical Suitability Certification Report

A report detailing the chemical testing performed and confirming the chemical suitability of the borrow site is to be provided to the Contracting Officer within 45 calendar days after sample collection and at least 30 days prior to the first scheduled date for importing borrow material. The report must include, but is not limited to the following:

all chemical testing results with a section describing how the results compare to the screening limits, a map of sample locations with GPS coordinates, a brief summary of sampling activities, sample composite details, and any other pertinent information. This report must be certified by a California-licensed professional engineer or geologist.

The report must include all laboratory chemical results and outlined in this specification. The results must be compared against the values provided in the attached, "Imported Fill Chemical Screening Limits".

In addition to the chemical result comparison, additional location

SECTION 31 00 00 Page 12 information (e.g. soil history, date of sampling, etc.) and commercial contact information (e.g. company name, laboratory used for testing, etc.)

must be provided in the report. Material from a borrow area can be brought onsite only after the Contracting Officer has provided approval to the report. It is the Contractor's responsibility to allow ample time for the Contracting Officer to review and approve the report and avoid any project delays.

PART 3 EXECUTION

3.1 TOLERANCES

All embankments (prior to placement of aggregate surfacing or topsoil) and backfills shall be constructed to the grades, lines, and cross-sections shown on the Plans. Levee adn berm final lines and grades shall be within plus or minus 0.1 ft of the required design lines and grades shown on the Plans before spreading the topsoil layer and prior to placing aggregate base. This tolerance will be allowed provided that any excess material is so distributed that the crown and slopes of the levee drain and that there are no abrupt humps or depressions in any surfaces.

A tolerance of 0.2 feet above or below the prescribed grade will be allowed for finished surfaces outside the levee embankment provided that the surface drains away from the levee and berm in the direction indicated on the Plans with no abrupt humps or depressions.

3.2 PREPARATION OF FOUNDATION, PARTIAL FILL SURFACES AND EMBANKMENTS

3.2.1 Foundation Preparation

After excavation, grubbing and stripping (as described in Section 31 11 00 CLEARING, GRUBBING, AND STRIPPING) of the embankment and foundation area to the extent indicated on the Plans or otherwise required, the sides of stump holes, test pits, and other similar cavities or depressions shall be broken down so as to flatten out the slopes to no steeper than 1H:1V, and the sides of the cut or hole shall be scarified to provide bond between the foundation material and the fill. Unless otherwise directed, each depression shall be filled with the same material type that is to be placed immediately above the foundation. The fill shall be benched or keyed, placed in layers, moisture conditioned, and compacted in accordance with the applicable provisions of these Specifications for the specific material type. Materials which cannot be compacted by roller equipment because of inadequate clearances shall be compacted with hand operated compactors in accordance with Paragraph 3.6 COMPACTION for the specific material type.

Prior to placement of levee fill in any section of the embankment, the foundation of such section shall be observed by the Contracting Officer's Representative and approved by the Contracting Officer before the surface is loosened thoroughly by discing or harrowing to a minimum depth of 6 inches, and moisture conditioned to the amount specified in Paragraph 3.5 MOISTURE…