Amend-0002_W9126G18B0025.pdf

W45VAK81244416 076085

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

GULF INTRACOASTAL WATERWAY, TEXAS GIWW CORPUS CHRISTI TO PORT ISABEL AND CHANNEL TO HARLINGEN IN KENNEDY, WILLACY, AND CAMERON COUNTIES, TEXAS is hereby amended as follow s:

(See Attached)

1. CONTRACT ID CODE PAGE OF PAGES

J 1

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 W9126G18B0025

X 9B. DATED (SEE ITEM 11)

10-Aug-2018

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

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

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

(a) By completing Items 8 and 15, and returning 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

30-Aug-2018

CODE

US ARMY CORPS OF ENGINEERS FORT WORTH

2000 FORT POINT ROAD

GALVESTON TX 77550-1229

W9126G 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

M3ODXMAN

Typewritten Text

W9126G18B0025

A0002-2

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

1. The specifications for Solicitation No. W9126G18B0025, Gulf Intracoastal Waterway, Texas, Corpus Christi to Port Isabel and Channel to Harlingen, in Kennedy, Willacy and Cameron Counties, Texas, are hereby amended as follows:

a) Specifications.

(1) SECTION 31 11 00.10 45 CLEARING, GRUBBING, AND REMOVAL OF DEBRIS – The enclosed SECTION 31 11 00.10 45 entitled CLEARING, GRUBBING, AND REMOVAL OF DEBRIS is in addition to those issued with this Solicitation.

(2) SECTION 31 23 16.17 45 EXCAVATION, FILLING, AND BACKFILLING FOR

STRUCTURES – The enclosed SECTION 31 23 16.17 45 entitled EXCAVATION, FILLING, AND BACKFILLING FOR STRUCTURES is in addition to those issued with this Solicitation.

(3) SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION – The enclosed SECTION 35 41 00.01 45 entitled EMBANKMENT CONSTRUCTION is in addition to those issued with this Solicitation.

b) Drawings.

(1) DRAWINGS NO. CG2-101 THROUGH CG2-104 – The enclosed drawings no. CG2-101 through CG2-104 supersede that issued with this solicitation.

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

4 Encls:

1. SECTION 31 11 00.10 45 CLEARING, GRUBBING, AND REMOVAL OF DEBRIS

2. SECTION 31 23 16.17 45 EXCAVATION, FILLING, AND BACKFILLING FOR STRUCTURES

3. SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION

4. DRAWINGS NO. CG2-101 THROUGH CG2-104

SWG FILE NO.:IWW 1175-275 SOLICITATION NO.:W9126G18B0025

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 11 00.10 45

CLEARING, GRUBBING, AND REMOVAL OF DEBRIS

PART 1 GENERAL

1.1 SUMMARY

1.2 MEASUREMENT AND PAYMENT

1.2.1 Clearing, Grubbing, and Removal of Debris

1.3 DEFINITIONS

1.3.1 Clearing

1.3.2 Grubbing

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION

3.1 PROTECTION

3.1.1 Roads and Walks

3.1.2 Utility Lines

3.2 CLEARING

3.2.1 Excavation and Fill Areas

3.3 TREE REMOVAL

3.4 PRUNING

3.5 GRUBBING

3.6 REMOVAL OF DEBRIS

3.6.1 Pipelines

3.7 DISPOSAL OF MATERIAL

3.7.1 Burning

3.7.2 Burying

-- End of Section Table of Contents --

SECTION 31 11 00.10 45 Page 1

(TO ACCOMPANY AMENDMENT NO. 0002 TO SOLICITATION NO. W9126G18B0025)

SECTION 31 11 00.10 45

CLEARING, GRUBBING, AND REMOVAL OF DEBRIS

AMENDMENT NO. 0002

PART 1 GENERAL

1.1 SUMMARY

The work covered in this Section consists of furnishing plant, labor, and equipment necessary to perform the operations in connection with clearing, grubbing, removal of debris from the areas specified herein, and the satisfactory disposal of cleared and removed materials.

1.2 MEASUREMENT AND PAYMENT

Measurement and payment for clearing, grubbing, and removal of debris will be paid for in accordance with provisions of the SECTION 01 22 00.10

MEASUREMENT AND PAYMENT.

1.2.1 Clearing, Grubbing, and Removal of Debris

Clearing, Grubbing, and Removal of Debris, including disposal of materials will not be measured for payment.

1.3 DEFINITIONS

1.3.1 Clearing

Clearing consists of the removal and satisfactory disposal of all trees, downed timber, snags, slash, brush, garbage, trash, debris, fencing, and other items occurring in the designated areas to be cleared.

1.3.2 Grubbing

Grubbing consists of the removal and satisfactory disposal of stumps, roots larger than 3 inches in diameter, and matted roots from the designated grubbing areas. Grubbing also includes filling of holes from the grubbing operation.

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION

3.1 PROTECTION

3.1.1 Roads and Walks

Keep roads and walks free of dirt and debris at all times.

3.1.2 Utility Lines

Protect existing utility lines that are indicated to remain from damage.

Notify the Contracting Officer immediately of damage to or an encounter with an unknown existing utility line. The Contractor will be responsible for repairs of damage to existing utility lines that are indicated or made

SECTION 31 11 00.10 45 Page 2 known to the Contractor prior to start of clearing and grubbing operations. When utility lines which are to be removed are encountered within the area of operations, notify the Contracting Officer in ample time to minimize interruption of the service.

3.2 CLEARING

Clearing is to be accomplished within the limits of existing ground to receive embankment and structures, together with strips 5 feet wide, beyond and contiguous thereto, existing levees to be degraded, ponding areas, ditches, structures, traverses, channels, riprap, revetment, borrow areas and ramps. Trees, downed timber, snags, slash, brush, garbage, trash, debris, fencing, and other items are to be cleared 2 inches above the existing ground surface. Trees and vegetation designated to be left standing or to remain are to be protected from damage from construction operations. Clearing of borrow areas are to be limited to the minimum area required for construction operations.

3.2.1 Excavation and Fill Areas

Excavation and fill areas shown are to be cleared prior to placement of fill.

3.3 TREE REMOVAL

Where indicated or directed, trees and stumps that are designated as trees are to be removed from areas outside of the areas designated for clearing and grubbing. This work is to include the felling of these trees and the removal of their stumps and roots as specified in the Paragraph:

GRUBBING. Trees are to be disposed as specified in the Paragraph:

DISPOSAL OF MATERIALS below.

3.4 PRUNING

Trim trees designated to be left standing within the cleared areas of dead branches 1-1/2 inches or more in diameter; and trim branches to heights using the method as indicated. Neatly cut limbs and branches to be trimmed close to the bole of the tree or main branches. Paint cuts more than 1-1/4 inches in diameter with an approved tree wound paint.

3.5 GRUBBING

Grubbing is to be accomplished within the limits of existing ground to receive embankment and structures, together with strips 5 feet wide, beyond and contiguous thereto, existing levees to be degraded, ponding areas, ditches, structures, traverses, channels, riprap, revetment, borrow areas and ramps. Grubbing is to be accomplished to a depth of at least 3 feet below the existing ground surface. Holes caused by grubbing operations and removal of pipes and drains, excluding holes in borrow areas, channels and ditches, are to be filled with satisfactory material as specified in SECTION 31 23 16.17 45, Excavation, Filling, and Backfilling for Structures. This material is to be placed in 6 inch layers to the elevation of the adjacent ground surface and each layer compacted to a density at least equal to that of the adjoining undisturbed material.

3.6 REMOVAL OF DEBRIS

Rubbish, timber, automobile tires, piling, riprap, and other objectionable materials are to be completely removed from the area within the

SECTION 31 11 00.10 45 Page 3 right-of-way limits. Also, the Contractor may be directed to remove other debris from the project location.

3.6.1 Pipelines

Abandoned pipelines and sewer and gas lines that are within the Channel template are to be removed and properly disposed. Pipelines include damaged outfall pipes to be removed in Placement Areas 2, 11 and 16.

3.7 DISPOSAL OF MATERIAL

Materials obtained from clearing, grubbing, and removal of debris operations are to be removed from the construction area and disposed in the designated disposal area in approved locations. Debris consisting of inert and essentially insoluble industrial solid wastes including, but not limited to rock, brick, dirt, concrete, shingles, and glass materials that are not readily decomposable, and that are categorized as Class III wastes, are to be removed from the construction area and disposed in the designated disposal area. Class III wastes are defined in Title 30, Part 1, Chapter 335, Subchapter A, Rule 335.1 of the Texas Administrative Code. Debris consisting of trees, shrubs, and logs are to be disposed in a Type IV landfill as approved. Other classes of waste materials including, but not limited to metal, plastic, and rubber are to be disposed in appropriate areas furnished by the Contractor. Automobiles, abandoned boats, and tires are to be disposed in a Type VIII landfill as approved.

3.7.1 Burning

Burning of cleared materials is not allowed.

3.7.2 Burying

Subject to applicable Federal, State, and local burying restrictions, the Contractor may bury the cleared and grubbed material in the placement area for which the clearing work is being completed. No material is to be buried within 10 feet of standing timber. Material disposed by burying is to be covered with a minimum of 24 inches of earth.]

3.7.3 Mulching

Contractor may mulch vegetative matter for disposal within the Placement Area without burying. Mulched material components shall be no larger than 4 inches in the largest dimension and shall be disposed of at least 50 feet from outfall structures in a relatively uniform layer. No mounds of mulched material will be permitted to remain within the Placement Area.

-- End of Section --

SECTION 31 11 00.10 45 Page 4

DIVISION 31 - EARTHWORK

SECTION 31 23 16.17 45

EXCAVATION, FILLING, AND BACKFILLING FOR STRUCTURES

PART 1 GENERAL

1.1 SUMMARY

1.2 MEASUREMENT AND PAYMENT

1.3 RIGHTS-OF-WAY

1.4 SUBMITTALS

1.5 QUALITY CONTROL

1.5.1 Reporting

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Satisfactory Materials

2.1.2 Random Fill

2.1.3 Material for Structural Backfill

2.1.4 Equipment for Compaction Around Structures

PART 3 EXECUTION

3.1 CLEARING, GRUBBING AND REMOVAL OF DEBRIS

3.1.1 Construction Plan

3.2 EXCAVATION

3.2.1 Common Excavation

3.2.1.1 Structural Excavation

3.2.1.2 Drainage Ditches

3.2.2 Grade Tolerances

3.2.3 Final Grading

3.2.4 Removal of Unsatisfactory Soils

3.2.5 Protection or Removal of Utility Lines

3.3 SLIDES

3.4 BACKFILL

3.4.1 Backfill Around Piles and Other Structures

3.4.2 Backfilling Around Pipe

3.4.3 Structural Backfill

3.4.3.1 Final Subgrade

3.5 CONTRACTOR QUALITY CONTROL

3.5.1 Compliance Inspection

3.5.2 Records

-- End of Section Table of Contents --

SECTION 31 23 16.17 45 Page 1

SECTION 31 23 16.17 45

EXCAVATION, FILLING, AND BACKFILLING FOR STRUCTURES

PART 1 GENERAL

1.1 SUMMARY

The work covered in this Section consists of furnishing labor, equipment and other incidentals necessary to perform excavation, stockpiling, structural excavation and backfill for work at drop-outlet structures and other incidental work specified, construction of compacted fills and backfill, disposal of excavated materials, and other earthwork incidental to excavation and other improvements.

1.2 MEASUREMENT AND PAYMENT

Measurement and payment for excavation, filling, and backfilling for structures will be paid for in accordance with provisions of SECTION

01 22 00.10 MEASUREMENT AND PAYMENT.

1.3 RIGHTS-OF-WAY

The rights-of-way for constructing the work is to be furnished without cost to the Contractor. Preserve and protect from damage caused by operations, the monuments placed on rights-of-way and base lines set by the Government. Monuments damaged or displaced by operations are to be repaired or replaced by the contractor at its expense. Additional markings or stakes that have been placed along the rights-of-way limits are to be maintained by the Contractor throughout the duration of this Contract.

1.4 SUBMITTALS

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

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordadnce with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Construction Plan

1.5 QUALITY CONTROL

Establish and maintain quality control for excavation operations to assure compliance with Contract requirements and maintain records of quality control for construction operations including but not limited to the following:

(1) Equipment. Type, size, and suitability for construction of the

SECTION 31 23 16.17 45 Page 2 prescribed work.

(2) Structural Excavation. Check grade, slopes, and dimensions for compliance with design sections.

(3) Grade Tolerances. Check fills to determine if placement conforms to prescribed grade and design section.

(4) Construction. Layout, maintaining existing drainage, moisture control, thickness of layers, spreading and compacting.

(5) Classification of soils, placing and compacting of structural fill, and density tests.

(6) Control Testing. Perform control testing, including particle size analysis. No separate measurement and payment will be made for control testing required in this Subparagraph. Include the costs for control testing in the Contract prices for items of work to which the work is incidental thereto.

1.5.1 Reporting

The original and two copies of these records of inspections and tests, as well as the records of corrective action taken, is to be furnished to the Government daily. Format of the report is to be as specified in the SECTION

01 45 01.00 QUALITY CONTROL.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Satisfactory Materials

Satisfactory Materials are to include materials classified in ASTM D2487 as CL, CH, SC, SP, SM, SW, GC, GM, GP, GW. Satisfactory materials are to have a natural, in-place moisture content less than 40 percent and is to be free from roots, brush, sod or other perishable materials

2.1.2 Random Fill

Random Fill is to include materials classified in ASTM D2487 as CL, CH, SC, SW, SP and CL-ML. Random fill is to be free from roots, brush, sod or other objectionable materials. Random fill is to be placed to backfill the over-excavation. In areas where it is impracticable in the opinion of the Contracting officer, to dewater the area to be filled or backfilled, granular material is to be used.

SECTION 31 23 16.17 45 Page 3

2.1.3 Material for Structural Backfill

Unless otherwise specified on the plans, the satisfactory soils for backfill around the pipes are to be low to medium plasticity clay soils obtained from borrow areas within Channel to Harlingen Placement Areas No.

2.

2.1.4 Equipment for Compaction Around Structures

1. Hand tamping is to be used in the compaction of structural fill within 3 feet of a structure and near structures where vehicular equipment cannot be used. These hand tampers are to be power driven, hand operated type.

2. Alternative Compaction Equipment - The Contractor may propose for use alternative types of compaction equipment not included in these specifications. The suitability of the alternative equipment is to be demonstrated to the Contracting Officer by a field test conducted by and at the expense of the Contractor. The alternative compaction equipment is to be capable of properly compacting the soil so that no planes of weakness or laminations are formed in the fill. Additionally, the alternative compaction equipment is not to detrimentally affect adjacent structures.

The field test is to consist of compacting a minimum of three layers of an area of embankment with the alternative type equipment.

3. Miscellaneous Equipment - Scarifiers, disks, spring-tooth or spike-tooth harrows, spreaders, power tampers and other equipment are to be of types suitable for the required construction. Sprinkling equipment is to be designed to apply water uniformly and in controlled quantities to variable widths of surface.

PART 3 EXECUTION

3.1 CLEARING, GRUBBING AND REMOVAL OF DEBRIS

Clearing, grubbing and removal of debris is to be done in accordance with the SECTION 31 11 00.10 45 CLEARING, GRUBBING AND REMOVAL OF DEBRIS.

3.1.1 Construction Plan

Excavation is to be performed using a method that will ensure that the area of the site and the area immediately surrounding the site are continually and effectively drained. Water is not to be permitted to accumulate in the excavation areas. The excavation is to be drained by satisfactory methods to prevent softening of the foundation bottom, undercutting of footings, or other actions detrimental to proper construction procedures. Unless otherwise shown, backfill and fill for the structure is to be sloped to drain away from the structure. Compacted fill and backfill is to be carried on in areas free of water. Normal ground water level in the project area varies. Silt and sand materials in the area may become saturated or water bearing and during excavation the slopes may be subject to sloughing. Prior to making the compacted fills and backfills, foundation areas are to not be permitted to accumulate water.

SECTION 31 23 16.17 45 Page 4

3.2 EXCAVATION

3.2.1 Common Excavation

Common excavation is to consist of removal of materials by excavating to remove the existing drainage pipes and the existing drop-outlet structural concrete footing, to install new footing and new drainage pipes. Care is to be exercised by the Contractor to not excavate below the grades shown to remove unsatisfactory materials, unless otherwise directed. Excessive excavation, as determined by the Contracting Officer, due to the fault or negligence of the Contractor is to be backfilled to grade. In the exterior slope repairing areas, excessive excavations are to be backfilled with cohesive materials as specified in the SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION. Backfilling of excessive excavations due to the fault or negligence of the Contractor will be at the expense of the Contractor.

3.2.1.1 Structural Excavation

Make the required excavations for the construction of the drop-outlet structure. Satisfactory material from required structural excavation is to be used in the structural backfill. Materials determined to be unsuitable by the Contracting Officer will be ordered wasted. Excavation for the structure is to conform to the dimensions and elevations for the structure as shown. Excavation carried below indicated depths of the structures will not be permitted except to remove unsatisfactory material as directed.

Unsatisfactory material is to be excavated 2 feet below the depth of concrete footing and the drainage pipes and replaced with CL and SC material. Material removed below the depths shown is to be replaced to the indicated excavation grade with satisfactory materials placed and compacted as specified in the SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION at no additional cost to the Government.

3.2.1.2 Drainage Ditches

There are existing drainage ditches within the PA. If in any case the existing drainage ditches which include perimeter and interior ditches have been impacted by construction activities, the Contractor is to re-establish the flow of the drainage ditches to the drop-outlet structure. Drainage ditches are to be excavated at locations, sizes and depths. Borrow area drainage ditches are to be excavated and connected to the existing ditches.

3.2.2 Grade Tolerances

Excavation of side slopes are not to be more than 0.2-foot above or below the grade indicated, and not vary more than 0.2-foot in 10 feet as measured with a straightedge

3.2.3 Final Grading

The excavated side slopes and drainage ditch bottom are to be graded smooth and recompacted where necessary to achieve a smooth compacted surface that is free of loose material and that conforms to the grade tolerance as specified above. The final graded ditch bottom is to be adequate to convey flow of water with no obstruction.

SECTION 31 23 16.17 45 Page 5

3.2.4 Removal of Unsatisfactory Soils

The removal of soils that are considered to be unsatisfactory are to be required in certain areas where compacted fill is to be placed. Soft yielding material encountered in the surface that will not adequately support construction equipment, in the opinion of the Contracting Officer, is to be removed to a minimum depth of 3 feet. The depth of removal is to be as directed. The Contractor will be required to excavate these areas to the depths directed and backfill the areas as specified in the Paragraph:

BACKFILL below and SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION.

Unsatisfactory soils are materials that include organic material, debris, soft silts, and similar materials. These materials may be disposed in the Placement Area as indicated. Materials, which are classified as unsatisfactory structural backfill, are defined as material containing organic material, sticks, branches, roots, brick, concrete, rock, and other debris. Unsatisfactory material in surfaces to receive fill is to be removed and replaced with satisfactory materials. Unsuitable materials are to be used as backfill cover to bury materials removed from SECTION 31 11

00.10 45 CLEARING, GRUBBING AND REMOVAL OF DEBRIS. The placing and compaction of satisfactory materials are to be as specified in the SECTION

35 41 00.01 45 EMBANKMENT CONSTRUCTION.

3.2.5 Protection or Removal of Utility Lines

Existing utility lines that are shown or the locations of which are made known or visible to the Contractor prior to excavation and that are to be retained, as well as, utility lines constructed during excavation operations are to be protected from damage during excavation and backfilling, and if damaged, are to be repaired by and at Contractor expense. Existing utility lines that are to be retained and that are not shown or the locations of which are not made known to the Contractor in sufficient time to avoid damage, if inadvertently damaged during excavation, are to be repaired by the Contractor at no cost to the Government.

3.3 SLIDES

3.4 BACKFILL

3.4.1 Backfill Around Piles and Other Structures

Material is to consist of satisfactory material as specified in the Subparagraph: Satisfactory Materials above, and be obtained from the required excavation. The moisture content of the material is to be adjusted to within the moisture content range specified in the SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION. Material is to be placed in maximum 4-inch to 6-inch thick layers prior to compaction and be thoroughly compacted with power-driven hand tampers to the density of the surrounding earth.

Backfilling is to be carried out in areas that are continually and effectively drained.

3.4.2 Backfilling Around Pipe

The pipe foundation areas and other surrounding areas are to be carefully

SECTION 31 23 16.17 45 Page 6 backfilled with approved satisfactory material as specified in the Subparagraph: Material for Structural Backfill. The backfill materials are to be soil material that is free of rocks, stones, or hard clods more than 3 inch in diameter. The moisture content of the material is to be adjusted to within the moisture content range specified in the SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION. The initial backfill material is to be deposited in areas free of water in maximum 4-inch to 6-inch thick layers evenly on both sides of the pipe and beneath the pipe haunches and compacted carefully with power-driven tampers to the density of the surrounding earth. The backfilling over pipe in 6-inch layers and compaction with power-driven hand tampers is to continue until the pipe has a minimum of 2 feet of cover. The remainder of the backfill or fill over pipe is to be placed and compacted as specified for compacted fill in the SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION. At no time will heavy equipment for spreading and compaction of material be operated within 2 feet of a wall. Backfilling is to be carried out in areas that are continually and effectively drained.

3.4.3 Structural Backfill

Backfill and fill for structures are to be placed in horizontal layers not to exceed 6 inches to 8 inches in loose depth and then compacted. Material is not to be placed on a surface that is muddy, frozen, or contains frost.

Backfilling is not to begin until construction of the drop-outlet structure has been approved, and the excavation cleaned of trash and debris. Backfill and fill are to be brought up to the indicated finished grade. Where material is to be placed against both sides of a wall or pipe, the placement of lifts are to be controlled so that the difference between the earth elevation on one side and the earth elevation on the other side of the wall is as small as practicable. However, the difference in elevations may not exceed 2 feet unless the finished grade on one side of the wall differs from the finished grade on the other, and the earth surface on both sides of the wall has been brought up to the lower finished grade. Unless otherwise directed, the placing and compaction of backfill and fill material is to conform to the provisions specified in the SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION. Heavy equipment for spreading or compacting is not to be operated closer than 3 feet to a foundation or wall. Material within 3 feet of foundations, pipes, and tops of structures is to be compacted by hand operated power-driven tampers. Excavation for the structures is to conform to the dimensions and elevations for the structures as shown. Excavation carried below indicated depths of the structures will not be permitted except to remove unsatisfactory material as directed. Unsatisfactory material is to be excavated 2 feet below the depth of concrete foundation & the drainage pipes and replaced with satisfactory material. Material removed below the depths is to be replaced to the indicated excavation grade with satisfactory materials placed and compacted as specified in the SECTION 35 41 00.01 45 EMBANKMENT CONSTRUCTION at no additional cost to the Government.

3.4.3.1 Final Subgrade

Soft spots encountered within the subgrade foundation area are to be removed, replaced by approved satisfactory materials of similar soil type, and compacted as specified.

SECTION 31 23 16.17 45 Page 7

3.5 CONTRACTOR QUALITY CONTROL

3.5.1 Compliance Inspection

Inspect and test for compliance with the Contract requirements and record the inspection of the operations, including but not limited to the following:

(1) Excavation - Lines and grades; drainage; shoring; disposal of materials.

(2) Filling and Backfilling - Materials; preparation of ground surface;

placement; compaction.

3.5.2 Records

A copy of the records of inspections and corrective actions taken are to be included in the daily quality control reports.

-- End of Section --

SECTION 31 23 16.17 45 Page 8

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

35 41 00.01 45

EMBANKMENT CONSTRUCTION

PART 1 GENERAL

1.1 SUMMARY

1.2 MEASUREMENT AND PAYMENT

1.3 REFERENCE

1.4 PROTECTION OF EXISTING SERVICE LINES AND UTILITY STRUCTURES

1.5 CHANGES IN DIKE ALIGNMENT

1.6 STOCKPILING

1.7 COORDINATION MEETINGS

PART 2 PRODUCTS

2.1 GENERAL

2.1.1 Satisfactory Materials

2.1.2 Borrow Materials

2.2 HAUL ROAD MATERIALS

2.3 FILL MATERIALS

2.3.1 Impervious Fill Materials

2.3.2 Random Fill Materials

PART 3 EXECUTION

3.1 CONSTRUCTION

3.1.1 Lines and Grades

3.1.2 DRAINAGE

3.1.3 Conduct of the Work

3.2 DEWATERING AND DIVERSION

3.3 EXCAVATION

3.3.1 Over Excavation

3.3.1.1 Outside Limits of Containment Dike Foundation or Structures

3.3.1.2 Within Limits of Dike Foundation or Structures

3.3.2 Disposition of Excavated Materials

3.4 UTILITIES

3.5 BORROW AREAS

3.6 FOUNDATION PREPARATION

3.6.1 Containment Dike

3.6.2 Training Dike

3.7 EMBANKMENT CONSTRUCTION

3.7.1 General

3.7.2 Placement

3.7.2.1 Equipment Traffic

3.7.2.2 Gradation and Distribution

3.7.2.3 Uncompacted Random Fill

3.7.2.4 Semi-Compacted Impervious Fill

3.7.3 Moisture Control

3.7.3.1 Insufficient Moisture for Suitable Bond

SECTION 35 41 00.01 45 Page 1

3.7.3.2 Excessive Moisture for Suitable Bond

3.7.3.3 Moisture Adjustment

3.7.4 Compaction Equipment

3.7.4.1 Tamping Rollers

3.7.4.2 Rubber-tired Rollers

3.7.4.3 Hand Operated Compactors

3.7.4.4 Crawler-type Tractors

3.7.4.5 Sprinkling Equipment

3.7.4.6 Miscellaneous Equipment

3.7.5 Compaction

3.7.5.1 Compaction of Semi-compacted Impervious Fill

3.7.5.2 Compaction of Uncompacted Random Fill

3.8 EROSION AND SLIDES

3.9 QUALITY CONTROL

3.9.1 Excavations

3.9.2 Embankments

3.9.2.1 General

3.9.2.2 Fill Placement and Compaction

3.9.3 Records and Reporting

-- End of Section Table of Contents --

SECTION 35 41 00.01 45 Page 2

35 41 00.01 45

EMBANKMENT CONSTRUCTION

AMENDMENT NO. 0002

PART 1 GENERAL

1.1 SUMMARY

The work covered in this Section consists of furnishing plant, labor, equipment and performing the operations in connection with construction of dike raise, training dike raise, and new drop-outlet structure in the placement area as shown. The work covered in this section is for levee work incidental to the relocation/reconstruction of the PA2 outfall structure and outfall pipe.

1.2 MEASUREMENT AND PAYMENT

Measurement and payment for embankment construction will be paid for in accordance with provisions of the SECTION 01 22 00.10 MEASUREMENT AND

PAYMENT.

1.3 REFERENCE

The publication listed below forms a part of this specification to the extent referenced. The publication is referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D2487 (2011) Soils for Engineering Purposes (Unified Soil Classification System)

1.4 PROTECTION OF EXISTING SERVICE LINES AND UTILITY STRUCTURES

Existing utility lines that are shown or the locations of which are made known to the Contractor prior to excavation and that are to be retained, as well as utility lines constructed during excavation operations, are to be protected from damage during excavation and backfilling and if damaged, are to be repaired by and at the expense of the Contractor. If the Contractor damages existing utility lines that are not shown or the locations of which are not known to the Contractor, report of this damage is to be made immediately to the Contracting Officer. If it is determined that repairs are to be made by the Contractor, these repairs will be ordered in accordance with the CONTRACT CLAUSE entitled CHANGES.

THE FOLLOWING IS FURNISHED FOR INFORMATION ON VERIFYING PIPELINE

OWNERSHIPS:

Lonestar Notification Center 1-800-545-6005 or online at www.Lonestar811.com

Texas 811 (Dig-Tess) 1-800-344-8377

SECTION 35 41 00.01 45 Page 3

1.5 CHANGES IN DIKE ALIGNMENT

The right is reserved by the Government to make changes in the dike alignment as may be found necessary before completion of the work, but if it becomes necessary, through no fault of the Contractor, to abandon a line or location on which work has been done, payment for materials placed will be made as specified in the payment item.

1.6 STOCKPILING

When the excavation from designated borrow sources progresses at a faster rate than placement in the fill is being accomplished, such excavated material is to be stockpiled at approved locations adjacent to the work until its use is authorized. No payment will be made for such stockpiling nor for the reloading and hauling of this material to its final position in the containment dike.

1.7 COORDINATION MEETINGS

The Contractor will schedule and attend regular coordination meetings with the Government. Meetings are to be scheduled as directed. Schedule and format of meetings to be determined at the Pre-Construction Conference.

Contractor is responsible for preparation and dissemination of meeting minutes.

PART 2 PRODUCTS

2.1 GENERAL

Material for embankment fill is to be secured from onsite excavations and borrow areas. The intention is to use the most suitable material obtainable from these sources. Material to be wasted will be specifically designated at the time the material is excavated. Material containing brush, roots, sod or other perishable materials will not be considered suitable. The suitability of the materials will be subject to approval and their disposition in the embankment will be as directed. Excavate in the borrow areas in the locations determined by the Contracting Officer with at least 100 feet away from interior toe of new dike, whenever such control is necessary to obtain the type of material required for the embankment.

2.1.1 Satisfactory Materials

Satisfactory materials for construction of haul roads, containment dike raise, training dike raise, berms, and slope erosion repair vary and are prescribed in the following subparts. Satisfactory materials are to be free from roots, trash, debris, and other organic materials.

2.1.2 Borrow Materials

Borrow materials may exhibit an unacceptable moisture content for compaction at the time of excavation. Borrow materials are to be handled and dried to the extent necessary so that it is considered satisfactory.

2.2 HAUL ROAD MATERIALS

Materials for haul road are to consist of satisfactory materials that include SW, SP, GW, GP, GM (as classified in accordance with ASTM D2487 and shell fragments which, from the standpoint of stability and are suitable

SECTION 35 41 00.01 45 Page 4 for use in the haul road construction.

2.3 FILL MATERIALS

2.3.1 Impervious Fill Materials

Material for impervious fill is to consist of clays, sandy clays, or silty clays obtained from the designated borrow areas within the placement area.

Material for impervious fill is to consist of satisfactory materials classified in accordance with ASTM D2487 as CL, CH, SC, and CL-ML.

Materials used for the containment dike raise and slope erosion repairs are to be classified as impervious fill materials.

2.3.2 Random Fill Materials

Material for random fill applications is to be excavated from designated side-cast borrow locations within the placement area. Satisfactory random fill materials are to consist of materials classified in accordance with ASTM D2487 as CL, CH, SC, GC, SP, SW and shell fragments. Materials used for training dike raise, interior berms, and other temporary earthwork construction are to be classified as random fill materials.

PART 3 EXECUTION

3.1 CONSTRUCTION

The soil profiles shown only represent general selective samples taken during initial subsurface soil investigation. Only if the designated borrow area materials are not suitable for a specified fill materials, the Contractor is permitted to relocate a different borrow area within the PA as borrow a source at the Contracting Officer's approval.

Be aware that the placement area has been utilized periodically through out the years, and anticipate extremely soft and wet newly dredged materials.

3.1.1 Lines and Grades

Containment dike raise, training dike raise, interior berms, and slope erosion repair are to be constructed to the lines, grades, and cross sections shown on the plans, unless otherwise directed. The Government reserves the right to make adjustments in dike alignments, foundation widths and slopes, or make other changes in the dike or berm sections as may be considered necessary to produce safe, stable earthen structures.

Changes in quantities resulting from revisions will not constitute justification for change in Contract unit prices, except as provided for in the CONTRACT CLAUSE entitled VARIATIONS IN ESTIMATED QUANTITIES.

3.1.2 DRAINAGE

Provide for the collection and disposal of surface and subsurface water encountered during construction. Completely drain construction site including dike and berm foundation areas, and borrow excavations during periods of construction to keep soil materials sufficiently dry. Construct storm drainage features that can include ponds or basins, at the earliest stages of site development, and throughout construction, grade the construction area to provide positive surface water runoff away from the construction activity or provide temporary ditches, swales, and other drainage features and equipment as required to maintain dry soils. Once drainage of the Placement Area and sufficient drying of the foundation

SECTION 35 41 00.01 45 Page 5 surfaces have been accomplished, borrow excavation and embankment construction can proceed. When unsuitable working platforms for equipment operation and unsuitable soil support for subsequent construction features develop, remove unsuitable material and replace with satisfactory soil as specified herein, or work the existing soils in place to dry and recompact to provide suitable support for construction. It is the responsibility of the Contractor to assess the soil and groundwater conditions and to employ necessary methods that will permit construction to proceed at no addtinal cost to the Government.

3.1.3 Conduct of the Work

Maintain and protect the newly constructed perimeter containment dike raise, training dike raise, and in a satisfactory condition during construction until final completion and acceptance of the work under this Contract. If, in the opinion of the Contracting Officer, the hauling equipment causes horizontal shear planes or slickensides, rutting, quaking, heaving, cracking, or excessive deformation of the dikes or backfill berms, limit the type, load, or travel speed of the hauling equipment on the dike or backfill berm. The Contractor may be required to remove, at no additional payment, dike material placed outside of prescribed slope lines. Approved dike or backfill material which is lost in transit or rendered unsuitable after being placed in the dike or backfill and before final acceptance of the work will be replaced using a satisfactory method at no additional cost to the Government. Excavate and remove from the dike or backfill material which is unsatisfactory, dispose this material, and refill the excavated area as directed, at no additional cost to the Government.

3.2 DEWATERING AND DIVERSION

Surface and groundwater control is to be accomplished in coordination with the required excavation and dike construction. In the event of heavy rain fall, the surface and groundwater control may necessitate the use of temporary diversion ditches and pump. Methods for care of surface water and for controlling the surface and groundwater levels are to be subject to approval.

The borrow areas for the access dike are to be drained continuously via drainage ditches which are to be connected to either interior or perimeter ditches during and after the completion of the construction work.

3.3 EXCAVATION

Excavation is to consist of removal of material in preparing the foundations for drainage pipe installation, removal of material to the lines and grades based on the existing pipe elevation, removal of objectionable materials, and reuse the excavated perimeter dike material for reconstruction of the perimeter dike. Over excavation is to 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.

Provide excavation for drop-outlet structure sufficient to leave at least a 12 inch clearance between the outer structure surfaces and the face of the excavation or support members of sufficient size to permit the placement and removal of forms for the full length and width of structure footings and foundations as shown. Remove loose disintegrated materials and thin strata. When concrete is to be placed in an excavated area, take special

SECTION 35 41 00.01 45 Page 6 care not to disturb the bottom of the excavation. Do not excavate to the final grade level until just before the concrete is to be placed.

3.3.1 Over Excavation

3.3.1.1 Outside Limits of Containment Dike Foundation or Structures

Over excavation outside the limits of the dike foundations or structures are to be backfilled to the 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 Dike Foundation or Structures

Over excavation within the limits of the dike foundations or structures are to be backfilled to grade with satisfactory impervious fill and semi-compacted as specified.

3.3.2 Disposition of Excavated Materials

Satisfactory excavated material is to be incorporated in the appropriate zones of the dike and berm templates. When direct placement is not practicable, satisfactory material from the excavation is to be stockpiled for subsequent use in parts of the work for which it is specified herein or as indicated. Excavated satisfactory material in excess of the quantity necessary to construct embankments are to be stockpiled for future construction work at locations designated by the Contracting Officer.

3.4 UTILITIES

The Contractor is responsible for movement of construction machinery and equipment over pipes and utilities during construction. For work immediately adjacent to or for excavations exposing a utility or other buried obstruction, excavate by hand. Start hand excavation on each side of the indicated obstruction and continue until the obstruction is uncovered or until clearance for the new grade is assured. Support uncovered lines or other existing work affected by the Contract excavation until approval for backfill is received. Report damage to utility lines immediately to the Contracting Officer.

3.5 BORROW AREAS

Approved borrow areas are to be excavated to the extent necessary to obtain satisfactory materials. The permissible depth(s) in the borrow areas vary based on field conditions during construction. Borrow areas are to be drained continuously and kept dry during excavation. Where possible, unsatisfactory materials in borrow areas are not to be removed. Borrow areas are to be graded to drain after completion of excavation.

Interior stockpile of satisfactory materials located within the placement area is to be utilized as borrow materials if the material is suitable.

3.6 FOUNDATION PREPARATION

3.6.1 Containment Dike

The stripped containment dike foundation areas are to be semi-compacted before placing new fill materials for the containment dike raise and slope repair construction. Sinkholes, cavities and depressions in the stripped

SECTION 35 41 00.01 45 Page 7 foundation areas are to be scarified and filled using satisfactory materials, placed in lifts, and semi-compacted in accordance with this Section.

3.6.2 Training Dike

Stripped training dike foundation areas are to be shaped to provide surfaces that will support the fill prior to placement of new fill materials. Sinkholes, cavities, and depressions in the stripped foundation areas are to be filled and shaped using suitable materials for the construction type as specified in this Section.

3.7 EMBANKMENT CONSTRUCTION

3.7.1 General

Prior to beginning placement of fill materials on the embankment foundations, notify the Government that the foundation is ready to receive fill. No fill is to be placed on the embankment foundation until these areas have been inspected and given final approval. Unless otherwise directed, the embankment is to be maintained at approximately the same elevation regardless of the number of types of materials being placed.

3.7.2 Placement

Before placing material for compacted fill, the foundation surface is to be cleared of existing vegetation and debris. Material not meeting the requirements for fill material as determined by the Contracting Officer is to be removed. After filling depressions and immediately prior to placement of fill, the foundation surface is to be scarified to a depth of 6-inches. Sloping ground surfaces, steeper than 1 Vertical to 6 Horizontal on which fill or backfill is to be placed, are to be stepped or benched to form a proper bond with the existing surface. No fill material is to be placed in water. Soft or unsatisfactory material in the fill area is to be removed as directed before placing the fill.

3.7.2.1 Equipment Traffic

Equipment traffic on a dike zone is to be routed to distribute the compactive effort as much as practicable. Ruts formed in the surface of a layer of spread material are to be filled before that material is compacted. If, in the opinion of the Contracting officer, the compacted surface of a layer of material is too smooth to bond properly with the succeeding layer, the surface is to be loosened by scarifying or other approved methods before material from the succeeding layer is placed.

3.7.2.2 Gradation and Distribution

The gradation and distribution of materials throughout each zone of the containment dike is to be so that the dike 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, the layer is to be mixed by harrowing or another approved method to blend the materials. During the placing and spreading process, continuously maintain a force of workers adequate to remove roots, debris, and oversize stones from the containment dike materials.

SECTION 35 41 00.01 45 Page 8

3.7.2.3 Uncompacted Random Fill

Uncompacted random fill is to be used for training dike raise or interior berm construction. The location and extent of the fill is to be as shown.

Uncompacted random fill material is to be placed and spread in layers not more than 18-inches in uncompacted thickness, except that within 4-feet of drop-outlet structure, the uncompacted layer thickness is to be reduced to 6-inches. The layers are to be uniformly spread, distributed, and otherwise manipulated during placement to such an extent that individual loads of material deposited on the fill will not remain intact, and large open voids in the fill will be eliminated. Fill layers are not to be placed in a manner which causes shrinkage cracks and open voids from developing in previously placed layers. Layers are to be started full out to the slope stakes and be carried substantially horizontal and parallel to the dike centerline with sufficient crown or slope to provide satisfactory drainage during construction.

3.7.2.4 Semi-Compacted Impervious Fill

Semi-compacted impervious fill is to be used for containment dike raise and slope erosion repair construction. The location and extent of the fill is to be as shown. Semi-compacted impervious fill is not to be placed in water. Fill material is to be placed and spread in layers not more than 12-inches in uncompacted thickness, except that within 4-feet of the drop-outlet structure, the uncompacted layer thickness is to be reduced to 6-inches. Layers are to be started full out to the slope stakes and be carried substantially horizontal and parallel to the dike centerline with sufficient crown or slope to provide satisfactory drainage during construction.

3.7.3 Moisture Control

The materials in each layer of the fill are to contain the amount of moisture, within the limits specified below or as directed, necessary to obtain the required compaction. Uncompacted random fill is to be placed at in-situ moisture content unless the in-situ moisture content is too wet or too dry to construct the required sections to the lines and grades shown;

in which case the fill is to be moisture adjusted as specified below.

Semi-compacted impervious fill is to be placed and compacted at uniform moisture contents that will allow suitable compaction and bond between layers. The moisture content of semi-compacted impervious fill is to be controlled so that hauling, spreading, and compaction equipment can operate on the compacted layers without rutting or pumping of the fill.