AMEND-0004_W912HY19B0003.pdf

W45VAK83119152 471667

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

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

FAR (48 CFR) 53.243

100% Small Business Set-Aside for Freeport, Texas, Hurricane Flood Protection in Brazoria County, Texas, Emergency Erosion Repairs is hereby amended as follows:

Continued on Page 2.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 25

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W912HY19B0003

X 9B. DATED (SEE ITEM 11)

23-May-2019

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

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

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

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

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

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

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

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

CONTRACT ORDER NO. IN ITEM 10A.

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

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

D. OTHER (Specify type of modification and authority)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO.

5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

CODE

USAED, GALVESTON

CONTRACTING DIVISION

2000 FORT POINT ROAD

GALVESTON TX 77553-1229

W912HY 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

X

02-Jul-2019

W912HY19B00033

A0004-2

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

1. THE SPECIFICATIONS FOR SOLICITATION NO. W912HY19B0003, FREEPORT, TEXAS,

HURRICANE FLOOD PROTECTION IN BRAZORIA COUNTY, TEXAS, EMERGENCY

EROSION REPAIRS, ARE HEREBY AMENDED AS FOLLOWS:

REMINDER THE BID DUE DATE IS SCHEDULED FOR 16 JULY AT 2:00 P.M. LOCAL TIME.

a) Changes by narrative.

(1) SECTION 00 21 00, INSTRUCTIONS, CONDITIONS AND NOTICES TO OFFERORS –

Section 00 21 00 - Instructions

1.1 ESTIMATED CONSTRUCTION PRICE RANGE (APR 1985) (FAR 36.204)

The estimated price range of the proposed construction is between $5,000,000 and $10,000,000 (AM#4) $1,000,000 and $5,000,000.

b) Specifications.

(1) SECTION 35 41 00, LEVEE CONSTRUCTION – The enclosed SECTION 35 41 00 entitled LEVEE CONSTRUCTION is in addition to that issued with this Solicitation.

c) Drawings.

(1) DRAWINGS NO. C-101 AND C-102 - The enclosed drawings no. C-101 and C-102, supersedes that issued with this Solicitation.

2. This amendment shall be attached to and become a part of the solicitation.

2 Encls:

1. SECTION 35 41 00, LEVEE CONSTRUCTION

2. DRAWINGS NO. C-101 AND C-102

SWG FILE NO.:BRAZ 515-71 SOLICITATION NO.:W912HY19B0003

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 41 00

LEVEE CONSTRUCTION

11/18

PART 1 GENERAL

1.1 MEASUREMENT AND PAYMENT

1.2 REFERENCES

1.3 DEFINITIONS

1.3.1 Satisfactory Materials

1.3.2 Unsatisfactory Materials

1.3.3 Embankment

1.3.4 Excavation

1.3.5 Classification of Soils

1.3.6 Degree of Compaction

1.3.6.1 Cohesive Material

1.4 SYSTEM DESCRIPTION

1.4.1 Embankment and Backfill Materials

1.4.2 Haul Roads

1.4.3 Stockpiling

1.4.4 Slides and Foundation Failures

1.4.5 Drainage Requirements

1.5 SUBMITTALS

1.6 REGULATORY REQUIREMENTS

1.7 PERMITS

1.8 PROJECT SITE CONDITIONS

1.8.1 Protection of Cultural and NAtural Resources

1.8.2 Protection of Man-Made Facilities and Natural Features

1.8.3 Historical, Archeological, and Cultural Resources

PART 2 PRODUCTS

2.1 TYPES OF FILL MATERIALS

2.1.1 Topsoil

2.1.2 Semicompacted Fill

PART 3 EXECUTION

3.1 CONSTRUCTION

3.1.1 Lines and Grades

3.1.2 Conduct of the Work

3.2 DEWATERING AND DIVERSION

3.3 EXCAVATION

3.3.1 Over Excavation

3.3.1.1 Outside Limits of Levee Foundations or Structures

3.3.1.2 Within Limits of Levee Foundations or Structures

3.3.2 Slopes and Surcharges

3.3.3 Borrow Areas

3.3.3.1 Contractor-Furnished

3.3.4 Existing Levees and Spoil Banks

SECTION 35 41 00 Page 1

TO ACCOMPANY AMENDMENT NO. 0004 TO SOLICITATION W912HY19B0003

3.3.5 Riprap and Bedding

3.4 TOLERANCES

3.5 SLIDES

3.6 STOCKPILES

3.7 SURFACE DRAINAGE OF COMPLETED AREAS

3.8 DISPOSITION OF EXCAVATED MATERIALS

3.8.1 Satisfactory Materials

3.8.2 Unsatisfactory Materials

3.9 PREPARATION OF FOUNDATION, PARTIAL FILL SURFACES AND ABUTMENTS

3.9.1 Earth

3.9.2 Benching

3.10 TEST FILL STRIPS

3.10.1 General

3.10.2 Testing and Reporting Requirements for Test Strips

3.11 PLACEMENT AND SPREADING

3.11.1 General

3.11.1.1 Gradation and Distribution

3.11.1.2 Foundations and Partial Embankment Fills

3.11.1.3 Equipment Traffic

3.11.2 Semicompacted Fill

3.12 MOISTURE CONTROL

3.12.1 General

3.12.1.1 Insufficient Moisture for Suitable Bond

3.12.1.2 Excessive Moisture for Suitable Bond

3.12.1.3 Drying Wet Material

3.12.1.4 Increasing Moisture in Dry Material

3.12.2 Semicompacted Fill

3.13 COMPACTION

3.13.1 Compaction Equipment

3.13.1.1 Tamping Rollers

3.13.1.1.1 Towed

3.13.1.1.2 Self-Propelled

3.13.1.2 Rubber-tired Rollers

3.13.1.3 Hand Operated Compactors

3.13.1.3.1 Power Tampers

3.13.1.3.2 Vibratory Plate Compactor

3.13.1.4 Crawler-type Tractors

3.13.1.5 Sprinkling Equipment

3.13.1.6 Miscellaneous Equipment

3.13.2 Compaction of Semicompacted Fill

3.13.3 Compaction Adjacent to Structures and Utilities

3.13.4 Topsoil

3.14 FIELD QUALITY CONTROL

3.14.1 Excavation

3.14.2 Embankment

3.14.2.1 General

3.14.2.1.1 Earthwork Equipment

3.14.2.1.2 Foundation Preparation

3.14.2.2 Materials Testing

3.14.2.2.1 Soil Classification Tests

3.14.2.2.2 Cohesive Material Testing

3.14.2.2.2.1 Moisture Density Relationships

3.14.2.2.2.2 Water (Moisture) Content Tests

3.14.2.2.2.3 In-place Density Testing for Cohesive Materials

3.14.2.2.3 Additional Testing

3.14.2.3 Materials

3.14.2.4 Fill Placement

3.14.2.5 Grade and Cross Section

3.14.2.6 Testing by the Government

SECTION 35 41 00 Page 2

3.14.2.7 Reporting

-- End of Section Table of Contents --

SECTION 35 41 00 Page 3

35 41 00

LEVEE CONSTRUCTION

AMENDMENT NO. 0004 - ADDED SECTION

11/18

PART 1 GENERAL

1.1 MEASUREMENT AND PAYMENT

Mesurement and payment for all fill materials and any associated specified construction activities and laboratory testing requirements will be paid for in accordance with provisions of the SECTION 01 22 00.10 MEASUREMENT

AND PAYMENT.

[]1.2 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 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 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 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

SECTION 35 41 00 Page 4

1.3 DEFINITIONS

1.3.1 Satisfactory Materials

Satisfactory materials consists of materials classified in accordance with ASTM D2487 as CL and CH free from: roots and other organic matter;

contamination from hazardous, toxic or radiological substances; trash, debris; and frozen materials. Not all satisfactory materials can be used in levee. Only the satisfactory materials stated above, meeting the additional or modified requirements of paragraph TYPES OF FILL MATERIALS, can be used for levee construction.

1.3.2 Unsatisfactory Materials

Unsatisfactory materials shall not be used in any levee or other required fill. Unsatisfactory materials includes all other materials that are not defined above as satisfactory materials.

1.3.3 Embankment

The term "levee" or "embankment" as used in these specifications are defined as the earth fill portions of the levee structure or other fills related to the levee structure, which include all types of earth fill for the levee and all other fills within the limits of the levee.

1.3.4 Excavation

Excavation consists of removal of material to the lines and grades shown on the drawings, or as otherwise directed or approved by the Contracting Officer and as described in paragraph 3.3 EXCAVATION in PART 3 EXECUTION.

1.3.5 Classification of Soils

Materials used to construct the embankments and for backfills will be classified in accordance with ASTM D2487 (Unified Soil Classification System). Cohesionless materials include materials classified in ASTM D2487 as GW, GP, SW, and SP. Cohesive materials include materials classified as GC, SC, ML, CL, MH, and CH. Materials classified as GM and SM will be identified as cohesionless only when the fines are nonplastic.

1.3.6 Degree of Compaction

1.3.6.1 Cohesive Material

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

1.4 SYSTEM DESCRIPTION

The work covered by this section consists of furnishing all equipment, labor, materials, and incidentals, and performing all operations necessary forexcavation of borrow areas and existing levees, and for all other required excavations or excavations incidental to the construction of levees as specified and shown; foundation preparation and the construction of levee embankments, including new levee, enlargement of existing levee, berms, road crossings, and other incidental earthwork as may be necessary to complete the levee as specified herein and as shown on the drawings.

SECTION 35 41 00 Page 5

All work under this section will comply with the requirements of EM 385-1-1.

1.4.1 Embankment and Backfill Materials

At least 30 days prior to delivery of any Contractor-furnished material to the site of the work, submit soil classification test results, moisture-density curves, gradation curves, and laboratory results of the required tests of the proposed material. Materials for embankment and backfill construction will be obtained from sources provided by the Contractor. All roots, limbs, and wood fragments shall be removed from embankment material. Materials containing sod, other organic or perishable materials, trash, debris, and frozen materials shall not be used in the embnakment. Submit to the Contracting Officer the source or sources intended to provide materials for embankment construction. If a source is selected other than a commercial quarry or other commercial entity from which earth or rock material will be directly purchased and where the Contractor or his subcontractor will perform the borrow excavation, a written statement will be provided to the Contracting Officer indicating permission to utilize the area. It is the Contractor's responsibility to obtain Federal, State, and local permits which may be required for excavation and reclamation of the borrow area. The Contracting Officer will require material samples from any proposed borrow source to be submitted as indicated in paragraph FIELD QUALITY CONTROL.

1.4.2 Haul Roads

Locate and construct haul roads approved by the Contracting Officer Prior to the commencement of construction submit for approval a site plan detailing the location of all haul roads within the project limits. Haul roads shall be constructed to maintain the intended traffic, be free draining, and remain in good condition throughout the contract period.

Haul roads constructed during the contract duration shall be removed after work is completed and the impacted area restored to its preconstruction conditions. All haul roads within the right-of-way that will remain as public thoroughfares after construction must be cleaned daily and maintained in the preconstruction condition. All costs associated with these haul roads shall be considered as a subsidiary obligation of the Contractor.

1.4.3 Stockpiling

Any on-site stockpiling of embankment materials will be in accordance with paragraph 3.6 Stockpiles. No payment will be made for such stockpiling nor for the reloading and hauling of these materials to their final position.

1.4.4 Slides and Foundation Failures

When sliding occurs in any part of the embankment and backfills prescribed in this section after they have been placed, but prior to final acceptance of all work under the contract, repair the slide as directed by the Contracting Officer. When the slide is caused through the fault of the Contractor, the repair will be made at no cost to the Government. when the slide is not the fault of the Contractor, an equitable adjusment in the contract price shall be made pursuant to the Contract Clause CHANGES to cover the cost of the repairs.

1.4.5 Drainage Requirements

Submit written evidence consisting of an authenticated copy of the easement

SECTION 35 41 00 Page 6 under which the Contractor acquired the property rights and access thereto, prepared and executed in accordance with applicable State and local requirements. Do not block or restrict the flow in a natural drain, existing culvert, ditch or channel at any time without obtaining prior written approval from the Contracting Officer. This approval will not relieve the Contractor from responsibility for any damage caused by the operation. Monitor the [river] [canal] [stream] flow and provide sufficient free discharge areas so that conditions are not worsened upstream or downstream by possible floods during construction. Surface water will be directed away from excavations and construction sites so as to prevent erosion and undermining of foundations. Diversion ditches, dikes, and grading will be provided and maintained as necessary during construction. Protect excavated slopes and backfill surfaces to prevent erosion and sloughing. Perform excavation so that the site and the area immediately surrounding the site and affecting operations at the site will be continually and effectively drained. If private property is to be used for drainage, submit written evidence that the right has been obtained from the property owner for drainage on his property.

1.5 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-02 Shop Drawings

Drainage Requirements

SD-03 Product Data

Borrow Areas; G, DO

Nuclear Density; G, DO

Embankment And Backfill Materials; G, DO

Excavation; G

1.6 REGULATORY REQUIREMENTS

The state statutory and regulatory requirements listed below form a part of this specification to the extent referenced.

1.7 PERMITS

In accordance with Contract Clause PERMITS AND RESPONSIBILITIES, obtain all necessary permits required for disposal, hauling, erosion control, burning, and pay all fees associate with permitting and compliance. Comply with the terms of these permits and with the requirements of Section 01 57 20.00 45 ENVIRONMENTAL PROTECTION, and this section.

1.8 PROJECT SITE CONDITIONS

1.8.1 Protection of Cultural and NAtural Resources

All work and operations shall comply with the requirements of Section 01 57 20.00 45 ENVIRONMENTAL PROTECTION and with the requirements of this

SECTION 35 41 00 Page 7 section.

1.8.2 Protection of Man-Made Facilities and Natural Features

Excavation shall follow the same requirements specified above for felling trees and shall be in compliance with EM 385-1-1. Existing utility lines that are shown on the drawings or the locations of which are made known to the Contractor prior to excavation and that are to be retained shall be protected from dmage during excavation. When utility lines that are to be removed are encountered within the area of operations, notify the applicable utility companies in sufficient time for measures to be taken to prevent interruption of the services.

1.8.3 Historical, Archeological, and Cultural Resources

Historical, archeological, and cultural resources within the Contractor's work limits may exist. If, during construction activities, the Contractor observes items that may have historical or archeological value, such observations will be reported immediately to the Contracting Officer so that appropriate authorities may be notified and a determination made as to their significance and what, if any, special disposition of the finds should be made. Cease all activities that may result in the destruction of these resources and prevent the workers from trespassing on or otherwise damaging such resources.

PART 2 PRODUCTS

2.1 TYPES OF FILL MATERIALS

2.1.1 Topsoil

Provide topsoil consisting of organic soil and place on the levee slopes as shown on the contract drawings and as specified in Section 32 92 23 SODDING.

2.1.2 Semicompacted Fill

Semicompacted fill material shall be obtained from sources provided by the Contractor. Material for semicompacted fill shall consist of satisfactory impervious materials classified as lean clay (CL) and fat clay (CH) in accordance with ASTM D2487.

PART 3 EXECUTION

3.1 CONSTRUCTION

3.1.1 Lines and Grades

Theembankment and backfill shall be constructedto the lines, grades, and cross sections indicated on the drawings, unless otherwise directed by the Contracting Officer. The Government 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 FAR 52.211-18 Variation in Estimated Quantities Clause.

SECTION 35 41 00 Page 8

3.1.2 Conduct of the Work

Maintain and protect the embankment and backfill in a satisfactory condition at all times until final completion and acceptance of all work under the Contract. If, in the opinion of the Contracting Officer, the hauling equipment causes horizontal shear planes or slicken sides, rutting, quaking, heaving, cracking, or excessive deformation of the embankment or backfill, limit the type, load, or travel speed of the hauling equipment on the embankment or backfill. The Contractor may be required to remove, at no additional payment, any embankment material placed outside of prescribed slope lines. Replace 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 in a satisfactory manner and no additional payment will be made therefore. Excavate and remove from the embankment or backfill any material which is unsatisfactory, dispose of such material, and refill the excavated area as directed, all at no cost to the Government.

3.2 DEWATERING AND DIVERSION

Surface and groundwater control shall be accomplised in coordination with the required excavation and embankment construction. surface and/or groundwater control may necessitate the use of temporary diversion ditches, cofferdams and/or dewatering by the use of pumping. Methods for care of surface water and for controlling the surface and groundwater levels shall be subject to approval of the Contracting Officer.

3.3 EXCAVATION

Excavation shall consist of removal of material in preparing the foundations to the lines and grades shown on the drawings, removal of material from ditches and channels to the lines and grades shown on the drawings, removal of objectionable materials and obtaining required fill materials from the borrow areas. Blasting will not be permitted. Over excavation will be backfilled to grade with satisfactory material and compacted to a density of at least that of the surrounding material.

Submit a written excavation plan 30 days prior to the beginning of any excavation. Approval of the detailed plan shall be obtined from the Contracting Officer prior to starting the work. If necessary, modify the plan as required to meet field conditions, and the modifications shall be approved prior to use. As a minimum, the plan shall contain the following:

a. Proposed methoods for preventing interference with, or damage to, existing underground or overhead utility lines, tress designated to remainand other man-made facilities or natural features designated to remain within or adjacent to construction rights-of-way.

b. Provision for coordinating the work with other Contractors working in the construction right-of-ways or on facilities crossing or adjacent to this work.

c. The proposed methods for controlling surface and ground water in the borrow areas and required excavations.

d. Stockpiling plan for embankment material before it is transported to the project site showing locations, stockpile heights, slopes, limits, and drainage around the stockpile areas.

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

SECTION 35 41 00 Page 9 excavated material.

f. The proposed sequence of work for excavating the borrow areas with plan and cross sectional views showing starting and final work locations and clearing, grubbingand stripping limits.

g. The proposals for conserving arable land and for making optimu use of available borrow, including the Contractor's proposed methods for grading the bottom of the borrow areas after completing use of the borrow areas.

h. The proposed road pattern, and plan for implementing dust control measures.

3.3.1 Over Excavation

3.3.1.1 Outside Limits of Levee Foundations or Structures

Over excavation outside the limits of the foundations of levees or structures shall be backfilled to grade with similar over excavated material or satisfactory material and compacted to a density of at least that of the surrounding material.

3.3.1.2 Within Limits of Levee Foundations or Structures

Over excavation within the limits of the foundations of levees or structures shall be backfilled to grade in accordance with paragraph

PREPARATION OF FOUNDATION, PARTIAL FILL SURFACES AND ABUTMENTS.

3.3.2 Slopes and Surcharges

Temporary excavation slopes for any channel, structure excavation, or other required excavation must not be steeper than the specified finished slope or the specified construction slope, as applicable, are not acceptable and are subject to the approval of the Contracting Officer. Bench the temporary slope so that the average slope is not steeper than the specified slope. In addition, do not surcharge temporary, permanent, or construction slope with excavated or stockpiled material or with heavy construction equipment which would have the same effect as the surcharge material.

Maintain the toe of stockpiled material a minimum distance back from the top of the finished excavation equal to the depth of the excavation.

Determine the maximum height of such stockpile without causing instability of the excavation slope.

3.3.3 Borrow Areas

Submit a written statement to the Government not later than 30 days after receipt of Notice to Proceed providing information with regards to the Contractor-furnished borrow area(s).

3.3.3.1 Contractor-Furnished

Proposed borrow areas will be subject to approval by the Contracting Officer. Any borrow sources proposed, accepted and approved by the Contracting Officer shall meet all applicable Federal, State and local requirements. No payment will be made for Contractor-furnished borrow areas.

3.3.4 Existing Levees and Spoil Banks

Existing levees and spoil banks shall be removed as shown on the drawings.

SECTION 35 41 00 Page 10

In areas where the existing levee is located within the random or berm zone of the levee, it shall be incorporated into the embankment. Portions of existing embankments which lie within the impervious zone of the levee shall be removed. When excavated, the existing levee shall be removed to the adjacent ground surface in a uniform manner, and shaped to maintain drainage in accordance with the adjacent natural drainage pattern. When lower levels of flood protection would be caused by levee construction provide the Contracting Officer a plan to maintain existing levels of protection during the construction period.

3.3.5 Riprap and Bedding

Perform excavations for riprap and bedding at the locations and to the lines and grades shown.

3.4 TOLERANCES

Allow a tolerance of 6 inches above or below the prescribed grade will be allowed in the excavation for channels, ditches, inspection trenches, cutoff trenches, excavations for riprap and bedding, and mandatory borrow areas. Allow a tolerance of 6 inches below the prescribed grade in the excavation for all other borrow areas.

All embankments and backfills shall be constructed to the grades, lines, and cross-sections shown on the drawings. At all points a tolerance of 6 inches above or below the prescribed grade will be permitted in the final dressing, provided that any excess material is so distributed that the crown of the levee drains and that there are no abrupt humps or depressions in any surfaces. For topsoil, a tolerance of 6 inches above the thickness as shown on the drawings will be permitted.

3.5 SLIDES

In case sliding or slope failure occurs in any part of the excavations prescribed in this section after they have been excavated, but prior to final acceptance of all work under the contract, repair the slide as directed by the Contracting Officer. In case the slide is caused through the fault or negligence of the Contractor, repair at no cost to the Government.

3.6 STOCKPILES

Provisions of paragraph SLOPES AND SURCHARGES are applicable to all stockpiled materials. Upon completion of construction operations, remove and dispose of all remaining stockpiled material by the disposal methods specified in paragraph DISPOSITION OF EXCAVATED MATERIALS.

3.7 SURFACE DRAINAGE OF COMPLETED AREAS

The areas shown on the drawings designated as the finished embankment areas shall be graded to the lines and grades shown on the drawings. The surface shall be free from sharp ridges, gullies, potholes, sinkholes, and any other surface irregularities. A tolerance of 6 inches above or below the prescribed grade will be allowed provided that the surface drains in the direction as indicated on the drawings.

SECTION 35 41 00 Page 11

3.8 DISPOSITION OF EXCAVATED MATERIALS

3.8.1 Satisfactory Materials

Incorporate satisfactory excavated material in the appropriate zones of the embankment. Provide satisfactory material consisting of material as defined in paragraph DEFINITIONS, subparagraph SATISFACTORY MATERIALS.

When direct placement is not practicable, satisfactory material from the excavation [may] [must] be stockpiled for subsequent use in parts of the work for which it is specified herein and/or as indicated on the drawings.

Dispose satisfactory materials in excess of the quantity necessary to construct backfills and embankments as specified for unsatisfactory materials.

3.8.2 Unsatisfactory Materials

Unsatisfactory materials will be as defined in paragraph DEFINITIONS, subparagraph UNSATISFACTORY MATERIALS. Permanently dispose unsatisfactory materials from the excavations prescribed in this section by [removal from the site to a Contractor-furnished disposal area] [placing in the disposal area shown on the drawings] [placing in abandoned portions of the borrow areas]. [ Shape the material so that its surface is free from abrupt changes in grade and slope to drain.] [ No additional payment will be made for [Contractor-furnished disposal areas] [placing in abandoned portions of the borrow areas].] [ Shape the material so that its surface is free from abrupt changes in grade and slope to drain.] [ No additional payment will be made for Contractor-furnished disposal areas.]

3.9 PREPARATION OF FOUNDATION, PARTIAL FILL SURFACES AND ABUTMENTS

3.9.1 Earth

After excavation (as described in paragraph EXCAVATION) or stripping (as described in paragraph CLEARING, GRUBBING AND STRIPPING) of the embankment foundation [and excavation of the [cut-off trench][inspection trench]] to the extent indicated or otherwise required, break down the sides of stump holes, test pits, and other similar cavities or depressions to flatten out the slopes, and scarify the sides of the cut or hole to provide bond between the foundation material and the fill. [ Scarify the slopes and bottom of the cut-off trench as directed.] Perform all scarifying and breaking of ground surface parallel to the centerline of the levee. Unless otherwise directed, fill each depression with the same material type that is to be placed immediately above the foundation. place the fill in layers, moistened, and compacted in accordance with the applicable provisions of paragraphs PLACEMENT, MOISTURE CONTROL, and COMPACTION for the specific material type. Compact materials which cannot be compacted by roller equipment because of inadequate clearances with power tampers in accordance with the paragraph COMPACTION for the specific material type.

After filling of depressions [and cut-off trench] and immediately prior to placement of compacted fill in any section of the embankment, thoroughly loosen the foundation of such section by scarifying, plowing, discing or harrowing to a minimum depth of 6 inches, and adjust the moisture content to the amount specified in paragraph MOISTURE CONTROL for the appropriate type of material. After removal of roots or other debris turned up in the process of loosening, compact the entire surface of the embankment foundation area by 5 complete coverages of the compaction equipment as specified for the appropriate type of fill. Immediately prior to placement of semi-compacted fill on or against the surfaces of any partial fill

SECTION 35 41 00 Page 12 section, remove all soft or loose material, all material containing cracks or gullies, and all material that does not conform with the specified zoning of the embankment. Loosen the remaining surface of the partial fill by scarifying, plowing, discing or harrowing to a minimum depth of [_____] [6] inches, and adjust the moisture content as specified in paragraph MOISTURE CONTROL for the appropriate type of material. Compact the surface of the partial fill section upon which fill is to be placed as specified for the appropriate type of fill. No separate payment will be made for loosening and rolling the foundation area, the abutment area, or the surfaces of partial fill sections, but the entire cost thereof will be included in the applicable contract price for fill.

3.9.2 Benching

Benching into existing levee embankment and abutments is required in order to place and compact the material in horizontal layers. The vertical face cut into the existing embankment or abutment resulting from the benching operation must be a minimum of 12 inches in height but can not exceed 18 inches in height.

3.10 TEST FILL STRIPS

3.10.1 General

Before beginning embankment construction, construct test strip(s) for semi compacted fill materials to demonstrate that the equipment and compaction procedure will achieve the moisture density relationship as specified. The test strips may be incorporated as part of the final embankment, if the fills meet the requirements of the specifications. Construct the test strips using materials from the borrow sources which have been approved by the Contracting Officer. Perform a test strip for each of the following type of fill materials; semi compacted. Each test strip shall be of sufficient size to allow compaction equipment to achieve normal operating speed over a 50 foot length. The test strip must be a minimum of two (2) times wider than the compaction equipment. Construct each test strip with a minimum of 4 lifts. Prior to the construction of the test strips, the foundation (subgrade)shall be proof rolled and install an 8 inch thick subbase layer. Provide a subbase layer consisting of the same material to be used in the test strip and spread and compact to the same requirements.

Construct the test strips in accordance with the applicable provisions of paragraphs PLACEMENT, MOISTURE CONTROL, and COMPACTION for the specific material type. Place and spread the fill material in layers in accordance with the applicable provisions of paragraphs PLACEMENT AND SPREADING for the specific material type. Compact each layer of the fill with a minimum of four (4) complete coverages using the specified compaction equipment, and as many additional coverages as may be required to achieve the specified density. Even if the results from the test strips show that the required densities can be obtained with less than four coverages by the compaction equipment, compaction of the impervious and random fills with a minimum of (4) complete coverages is still required. If the use of the proposed compaction equipment causes shearing of the fill, laminations in the fill, or results in inadequate compaction, the Contracting Officer may direct that such roller be removed from the fill and that another appropriate tamping roller be used.

3.10.2 Testing and Reporting Requirements for Test Strips

Prior to construction of the test strips, perform one laboratory compaction test for each type of material used in test strips. Compaction tests shall

SECTION 35 41 00 Page 13 be performed in accordance with the requirements specified in paragraph MATERIALS TESTING. Test results shall be submitted to the Contracting Officer before construction of the test strips. After placement and spreading of the fill in the test strip, but prior to compaction, obtain five samples from each lift for moisture content determination in accordance with ASTM D2216. Use nuclear density testing equipment in accordance with ASTM D6938. In addition, the following condition applies:

a. Prior to using the nuclear density testing equipment on the site, submit to the Contracting Officer a certification that the operator has completed a training course approved by the nuclear density testing equipment manufacturer[, the most recent data sheet from the manufacturer's calibration, and a copy of the most recent statistical check of the standard count precision.

b. Provide nuclear density testing equipment capable of extending a probe a minimum of 6 inches down into a hole.]

After compaction of the fill, perform a minimum of 5 in-place nuclear density and moisture content tests (in accordance with ASTM D6938) and one

(1) sand cone density test (in accordance with ASTM D1556/D1556M) on each lift. Obtain one sample from each test strip for classification testing as specified in paragraph MATERIALS TESTING. All testing and sampling locations will be determined by the Contracting Officer. The Contractor's QC personnel will monitor and document construction and testing of the test strips. Documentation must include weather conditions, soil type, spreading and compaction equipment type, lift thickness, number of coverages, moisture content, dry density, and a plan showing approximate location of sampling and testing. Provide documentation of the test strip construction procedures and results of all testing to the Contracting Officer. Do not commence full scale embankment construction until the equipment and placement methods are approved by the Contracting Officer.

3.11 PLACEMENT AND SPREADING

3.11.1 General

Prior to beginning embankment placement on the levee foundation, notify the Government that the foundation is ready to receive fill.] No fill shall be placed on any part of the embankment foundation until such areas have been inspected and given final approval by the Contracting Officer.

3.11.1.1 Gradation and Distribution

The gradation and distribution of materials throughout each zone of the levee must be such that the embankment will be free from lenses, pockets, streaks, and layers of material differing substantially in texture or gradation from surrounding material of the same class. If lenses, pockets, or layers of materials differing substantially in texture or gradation from surrounding material occur in the spread material, mix the layer by harrowing or any other approved method to blend the materials. During the placing and spreading process, maintain at all times a force of workers adequate to remove all roots, debris, and oversize stone from all embankment materials. All stones and rock fragments larger than 1 inch in any dimension shall be removed at the source prior to hauling from the fill source. No fill shall be placed upon a frozen surface, nor incorporate snow, ice, or frozen earth in the embankment.

SECTION 35 41 00 Page 14

3.11.1.2 Foundations and Partial Embankment Fills

Keep the foundations and all partial embankment receiving fills thoroughly drained. Placing operations will be such as to avoid mixing of materials from adjacent sections as much as practicable.

3.11.1.3 Equipment Traffic

Route equipment traffic on any embankment zone to distribute the compactive effort as much as practicable. Ruts formed in the surface of any layer of spread material will be filled before that material is compacted. If, in the opinion of the Contracting officer, the compacted surface of any layer of material is too smooth to bond properly with the succeeding layer, loosen the surface by scarifying or other approved methods before material from the succeeding layer is placed.

3.11.2 Semicompacted Fill

The location and extent of the semicompacted fill are as shown on the drawings. Do not place semicompacted fill in water. Place and spread semicompacted fill material in layers not more than 12 inches in uncompacted thickness. Layers must be started full out to the slope stakes and must be carried substantially horizontal and parallel to the levee centerline with sufficient crown or slope to provide satisfactory drainage during construction.

][]3.12 MOISTURE CONTROL

3.12.1 General

The materials in each layer of the fill must contain the amount of moisture, within the limits specified below or as directed by the Contracting Officer, necessary to obtain the required compaction. Rework material that is not within the specified moisture content limits after compaction to obtain the specified moisture content, regardless of density.

3.12.1.1 Insufficient Moisture for Suitable Bond

If the top or contact surfaces of a partial fill section become too dry to permit suitable bond between these surfaces and the additional fill to be placed thereon, loosen the dried materials by scarifying or discing to such depths as may be directed by the Contracting Officer, dampen the loosened material to an acceptable moisture content, and compact this layer in accordance with the applicable requirements of paragraph COMPACTION.

3.12.1.2 Excessive Moisture for Suitable Bond

If the top or contact surfaces of a partial fill section become too wet to permit suitable bond between these surfaces and the additional fill to be placed thereon, scarify and dry the wet material, assisted by discing or harrowing, if necessary, to such depths as may be directed by the Contracting Officer. Dry the material to an acceptable moisture content, and compact in accordance with the applicable requirements of paragraph

COMPACTION.

3.12.1.3 Drying Wet Material

Material that is too wet must be dried in the borrow area prior to bringing to the levee embankment be assisted by discing or harrowing, if

SECTION 35 41 00 Page 15 necessary, until the moisture content is reduced to an amount within the specified limits.

3.12.1.4 Increasing Moisture in Dry Material

The moisture content of material that is too dry, will be adjusted in the borrow area prior to bringing to the levee embankment. Add water to the fill material and by harrowing, or other approved methods, work the moisture into the material until a uniform distribution of moisture within the specified limits is obtained. Control the amount of water applied on a layer of fill on the levee embankment so that free water will not appear on the surface during or subsequent to rolling. Should too much water be added to any part of the embankment, delay the rolling on that section of the embankment until the moisture content of the materials is reduced to an amount within the specified limits. If it is impracticable to obtain the specified moisture content by wetting or drying the material on the fill, the Contractor may be required to pre-wet or dry back the material at the source of excavation or in the borrow area.

3.12.2 Semicompacted Fill

Place semicompacted fill within plus or minus 2 percent of optimum moisture content. The moisture content of semicompacted fill shall be controlled such that hauling, spreading, and compacting equipment can operate with normal procedure without excessive rutting of the fill. The moisture content must be that which will facilitate obtaining the specified compaction.

3.13 COMPACTION

3.13.1 Compaction Equipment

Compaction equipment must conform to the following requirements and be used as prescribed in subsequent paragraphs.

3.13.1.1 Tamping Rollers

3.13.1.1.1 Towed

Provide tamping rollers consisting of a heavy duty double drum unit, with a drum diameter not less than 60 inches, and an individual drum length of not less than 60 inches. Provide drums that are capable of being ballasted with water or a combination of sand and water. Each drum must have staggered feet uniformly spaced over the cylindrical surface to provide approximately three tamping feet for each 2 square feet of drum surface.

Provide tamping feet that are 7 to 9 inches in clear projection from the cylindrical surface of the roller and have a face area of not less than 5 square inches nor more than 7 square inches. The roller must be equipped with cleaning fingers, designed and attached to prevent the accumulation of material between the tamping feet. Maintain these cleaning fingers at their full length throughout the periods of use of the roller. The weight of the roller must be a minimum of 3500 psf of linear drum length weighted, and no more than 2000 psf of drum length empty. Yoke the two drums comprising one roller unit such that they will oscillate when traversing uneven surfaces. The design and operation of the tamping roller will be subject to the approval of the Contracting Officer who has the right at any time during the prosecution of the work to direct such repairs to the tamping feet, minor alterations in the roller and variations in the weight as may be found necessary to secure optimum compaction of the earth fill

SECTION 35 41 00 Page 16 materials. The Contractor may be required to add ballast to the roller to the maximum capacity specified by the manufacturer of the roller. Draw the roller by a crawler-type or a rubber-tired tractor at a speed not to exceed

3.5 miles per hour. Discontinue the use of the rubber-tired tractor if the tires leave ruts that prevent uniform compaction by the tamping roller. If tamping rollers are used in tandem, not more than two rollers in tandem will be permitted and in such case, one trip of the tandem rollers over any surface will be considered as two passes. When tamping rollers are used in tandem, the tamper foot spacing must be offset so that the circumferential rows on the rear drums are in line with the mid-point of the circumferential rows on the forward drums.

3.13.1.1.2 Self-Propelled

Conditioned upon satisfactory performance, self-propelled tamping rollers may be used in lieu of tractor-drawn tamping rollers. Self-propelled rollers exceeding the empty weight requirement may be used provided that by the substitution of tamping feet, having a face area not exceeding 14 square inches, the nominal foot pressure on the tamping feet of the self-propelled roller can be adjusted to approximate the nominal foot pressure of the towed roller for the particular working condition required for the towed rollers. The tamping feet must be 7 to 9 inches in clear projection from the cylindrical surface of the roller. For self-propelled rollers, in which steering is accomplished through use of rubber-tired wheels, the tire pressure must not exceed 40 psi. Self-propelled rollers shall be operated at a speed not to exceed 3.5 miles per hour.

3.13.1.2 Rubber-tired Rollers

Provide rubber-tired rollers that have a minimum of four wheels equipped with pneumatic tires. The tires must be of such size and ply as to be capable of being operated at tire pressures between 80 and 100 psi at an 25,000 pound wheel load. The roller wheels must be located abreast and designed so that each wheel will carry approximately equal load in traversing uneven ground. The spacing of the wheels must be such that the distance between the nearest edges of adjacent tires will not be greater than 50 percent of the rated tire width of a single tire at the operating pressure for an 25,000 pound wheel load. The roller must have a body suitable for ballast loading such that the load per wheel may be varied, as directed by the Contracting Officer, from 18,000 to 25,000 pounds. Tow the roller at a speed not to exceed 5 miles per hour. The character and efficiency of this equipment will be subject to the approval of the Contracting Officer.

3.13.1.3 Hand Operated Compactors

Perform compaction of material, in areas where it is impracticable to use a roller or tractor compaction, using approved hand operated power compactors.

3.13.1.3.1 Power Tampers

Power tampers must be hand operated equipment capable of compacting material in confined areas. Provide compactors that are either an internal combustion or pneumatic activated tamper. Tampers must have sufficient weight and striking power to produce the specified compaction. The character and efficiency of this equipment will be subject to the approval of the Contracting Officer.

SECTION 35 41 00 Page 17

3.13.1.3.2 Vibratory Plate Compactor

Vibratory compactors operated by hand in confined areas must utilize the oscillating cam principal and must deliver an impact of not less than 2000 lbf at a rate of approximately 2000 impulses per minute. The character and efficiency of this equipment will be subject to the approval of the Contracting Officer.

3.13.1.4 Crawler-type Tractors

Crawler-type tractors used for spreading or compaction must have a minimum weight of 20,000 pounds, exert a minimum unit tread pressure of 6 psi, and operate at a maximum speed of 3.5 miles per hour.

3.13.1.5 Sprinkling Equipment

Provide sprinkling equipment consisting of tank trucks, pressure distributors or other equipment designed to apply water uniformly and in controlled quantities to variable width of surface.

3.13.1.6 Miscellaneous Equipment

Provide scarifiers, disks, spring-tooth or spike-tooth harrows, spreaders, and other equipment that is suitable for use in embankment construction and approved by the Contracting Officer. Equipment used for blending fill material must be capable of penetrating the full loose lift thickness of the specific material type.

3.13.2 Compaction of Semicompacted Fill

After a layer of material has been dumped and spread, harrow it as required to break up and blend the fill materials to obtain uniform moisture distribution. Perform harrowing with a heavy disk plow, or other approved harrow, to the full depth of the layer. When the moisture content and the condition of the layer are satisfactory, compact the new layer of fill by the controlled movement of the hauling equipment over the area of the fill. Equipment will be routed so as to prevent excessive rutting of the fill surface. Dumping, spreading, sprinkling, and compacting may be performed at the same time at different points along a section when there is sufficient area to permit these operations to proceed simultaneously.

3.13.3 Compaction Adjacent to Structures and Utilities

Do not operate heavy equipment for spreading and compacting fill within 4 feet of structures or utilities, except as otherwise specified herein.

Compact material within 4 feet using appropriate hand operated compactors specified herein.

3.13.4 Topsoil

Place topsoil on the embankment surfaces as shown on the contract drawings and as specified in SECTION 32 92 23 SODDING.

3.14 FIELD…