Attachment_1_Levee_Slides_Repair_Task_Order_SoW_and_Supplemental_Specs_-_For_Solicitation.pdf

SATOC TASK ORDER SCOPE OF WORK

PROJECT TITLE

Mississippi River Levees – Maintenance IDIQ Task Order: Levee Slides Repair St. John’s Levee & Drainage District New Madrid County, Missouri and St. Francis Levee District of Missouri Pemiscot County, Missouri

PROJECT LOCATIONS

Levee slides at LM 35/23+00 and LM 36/19+00 are located on the Birds Point New Madrid Setback Levee within the St. John’s Levee & Drainage District in New Madrid County, Missouri.

Levee slide at LM 21/08+78 is located on the Mainline Levee within the St. Francis Levee District of Missouri in Pemiscot County, Missouri.

All three levee slides are located on the Commerce Missouri – St. Francis River System.

SCOPE OF WORK

The work consists of providing all plant, labor, and equipment necessary for the repair of three levee slides in accordance with the contract drawings and specifications.

AREA OFFICE

Caruthersville Area Office

AREA ENGINEER INFORMATION

Mr. Jack Ratliff, Area Engineer Caruthersville Area Office 706 Harry S. Truman Boulevard Caruthersville, Missouri 63830-1268

If other, give contact information:

N/A

TRANSPORTATION FACILITIES (DIRECTIONS TO THE PROJECT)

The levee slide located in Pemiscot County (levee slide at LM 21/08+78) can be accessed by taking Interstate 55 to exit 19 in Missouri. Turn onto Missouri Highway 84 and continue southeast for approximately 0.1 miles to East Outer Road. Turn onto East Outer Road and continue north for approximately 4.6 miles to County Road 334. Drive east on County Road 334 for approximately 0.4 miles until its intersection with the top of levee. Turn onto the levee and drive south on the levee for approximately 0.3 miles to the levee slide at LM 21/08+78 job site.

The levee slides in New Madrid County (levee slides at LM 35/23+00 and LM 36/19+00) can be accessed by taking Interstate 55 to exit 44 in Missouri. From exit 44 head east on I-55 Business for approximately 2.9 miles to its intersection with State Highway U/Dawson Road. Head east on State Highway U/Dawson Road for approximately 1.0 miles until its intersection with Missouri WW. Head south on Missouri WW for approximately 0.4 miles until its intersection with Vandenvender Avenue. Stay on Missouri WW at this intersection and head east for approximately 0.9 miles to the levee slides at LM 35/23+00 and LM 36/19+00 job site.

FOR SOLICITATION

LENGTH OF PROJECT

The levee slide at LM 35/23+00 is approximately 206 linear feet in length, the levee slide at LM 36/19+00 is approximately 116 linear feet in length, and the levee slide at LM 21/08+78 is approximately 80 linear feet in length.

STATION RANGE

This construction project consists of repairing three levee slides. See plan sheets C-100, C-101, and C-102 for the exact project limits for each slide repair location.

PERFORMANCE PERIOD (# of calendar days)

MONTHLY ANTICIPATED ADVERSE WEATHER DELAY

*Based on a 6 day work week January – 16 days February – 14 days March – 7 days April – 7 days May – 8 days June – 5 days July – 4 days August – 4 days September – 5 days October – 6 days November – 7 days December – 13 days

AMOUNT OF LIQUIDATED DAMAGES

$715.00

LOCAL POINT OF CONTACT (in the event of obstruction along project area)

Mr. Riley James St. John’s Levee and Drainage District PO Box 248 New Madrid, Missouri 63869 Telephone no. (573) 748-5574

Mr. Charles Davis St. Francis Levee District of Missouri PO Box 77 Caruthersville, Missouri 63830 Telephone No. (573) 333-0700

AUTHORITY

The work provided for herein is authorized by the Flood Control Act approved 15 JUNE 1936, as amended.

APPROPRIATION

96X3112 – Flood Control, Mississippi River and Tributaries

ALLOTMENT

MRL – Maintenance

ESTIMATED PROJECT VALUE

The estimated value of the proposed work is between $250,000 and $500,000.

TOTAL PROJECT SITE AREA

27.4 acres

TOTAL DISTURBED AREA

3.9 acres

PROJECT RECEIVING WATERS

Levee slide at LM 21/08+78 receiving water is the Mississippi River which is also the ultimate receiving water.

Levee slides at LM 35/23+00 and LM 36/19+00 receiving water is St. John’s Bayou. Ultimate receiving water is the Mississippi River.

PROJECT WITHIN THE JURISDICTION OF AN MS4

No

STORMWATER ENTER A WATERBODY ON THE 303(d) LIST OR WITH AN APPROVED TMDL No

OTHER INFORMATION

A bid schedule line item for Additional Borrow has been added to the bid schedule for this Task Order. The Measurement and Payment section has also been updated to include Additional Borrow.

Supplemental specifications for Earthwork (SECTION 31 00 00) are being provided with this Task Order in order to specify the requirements for the Additional Borrow material that will be required as part of this Task Order work. Specifically paragraph 2.1 Additional Borrow was added to the Earthwork specification for this Task Order.

Supplemental specifications for Clearing, Grubbing and Stripping (SECTION 31 11 00.00 11) are being provided with this Task Order also in order to specify the requirements for stripping in the borrow areas.

Specifically paragraph 3.4 STRIPPING in SECTION 31 11 00.00 11 was updated to specify this requirement.

Levee Slides Repair Task Order

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 22 00.00 11 MEASUREMENT AND PAYMENT

DIVISION 31 - EARTHWORK

31 00 00 EARTHWORK

31 11 00.00 11 CLEARING, GRUBBING AND STRIPPING

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS Page 1

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 22 00.00 11

MEASUREMENT AND PAYMENT

1/10/08

PART 1 GENERAL

1.1 JOB PAYMENT ITEMS

1.1.1 Mobilization and Demobilization

1.1.2 Environmental Protection

1.2 Write and/or Amend SWPPP, Obtain Permit If Necessary, and

Conduct Inspections

1.3 UNIT PRICE PAYMENT ITEMS

1.3.1 Remobilization

1.3.2 Storm Water Pollution Prevention

1.3.2.1 Silt Fence

1.3.2.2 Construction Exit

1.3.3 Stripping

1.3.4 Excavation

1.3.5 Geogrid

1.3.6 Compacted Backfill

1.3.7 Establishment of Turf

1.3.8 Additional Borrow

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION (Not Used)

-- End of Section Table of Contents --

SECTION 01 22 00.00 11 Page 1

SECTION 01 22 00.00 11

MEASUREMENT AND PAYMENT

1/10/08

PART 1 GENERAL

1.1 JOB PAYMENT ITEMS

Payment items for the work of this contract for which contract job payments will be made are listed in the BIDDING SCHEDULE and described below. All costs for items of work, which are not specifically mentioned to be included in a particular job or unit price payment item, shall be included in the listed job item most closely associated with the work involved. The job price and payment made for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, meeting safety requirements, tests and reports, and for performing all work required for which separate payment is not otherwise provided.

1.1.1 Mobilization and Demobilization

a. Payment

Payment will be made for costs associated with mobilization and demobilization, as defined in Contract Clauses PAYMENT FOR MOBILIZATION

AND DEMOBILIZATION.

b. Unit of measure, Job: JA

1.1.2 Environmental Protection

a. Measurement

No measurement will be made for Environmental Protection.

b. Payment

Payment will be made for costs associated with operations necessary for environmental protection as specified in Section 01 57 20.00 11 ENVIRONMENTAL PROTECTION. This price and payment shall be considered full compensation for furnishing all plant, labor, materials, and equipment and for performing all operations necessary for "Environmental Protection." This price and payment does not include those items covered under "Storm Water Pollution Prevention;" however, it does include items incidental thereto. The Contractor shall be responsible for payment of fees associated with environmental permits, application, and/or notices obtained by the Contractor. The Contractor shall be responsible for payment of all fines/fees arriving from violation or non-compliance with Federal, State, Regional, and local laws or regulations. The Government will not provide any compensation for payments of fines/fees, in the event that fines/fees are incurred by the Contractor.

SECTION 01 22 00.00 11 Page 2

c. Unit of measure, Job: JA

1.2 Write and/or Amend SWPPP, Obtain Permit If Necessary, and Conduct Inspections

a. Measurement

No measurement will be made for Write and/or Amend SWPPP, Obtain Permit If Necessary, and Conduct Inspections.

b. Payment

Payment for Write and/or Amend SWPPP, Obtain Permit If Necessary, and Conduct Inspections will be made at the job price for "Write and/or Amend SWPPP, Obtain Permit If Necessary, and Conduct Inspections", as broken down by the percentages listed under Stormwater Pollution Prevention below. Price and payment shall constitute full compensation for initial Contractor creation and submittal of a SWPPP and application for temporary construction stormwater permit to the appropriate state agency, obtaining SWPPP approval and permit from said agency, continuous updating of the SWPPP and all other operations incidental thereto for the duration of the construction activity, and filing the notice of termination upon reaching final stabilization of the site.

c. Unit of measure, Job: JA

1.3 UNIT PRICE PAYMENT ITEMS

Payment items for the work of this contract on which the contract progress payments will be based are listed in Section 00 41 00.00 11 - BIDDING SCHEDULE and are described below. The unit price and payment made for each item listed shall constitute full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, meeting safety requirements, tests, and reports, and for performing all work required for each of the unit price items.

1.3.1 Remobilization

a. Measurement

Measurement will be made per mile traveled.

b. Payment

For purposes of payment, when a Task Order requires the Contractor to move equipment more than 4 miles from the initial site to other sites within the same area, the Contractor shall be paid for "Remobilization" at the contract unit price per mile to the work area. The distance will be measured in miles from one site to the next in the order of performance directed by the Task Order.

c. Unit of measure, Mile: MI

1.3.2 Storm Water Pollution Prevention

No separate measurement or payment will be made for the work "Storm Water Pollution Prevention" required by Section 01 57 25.00 11 STORM WATER

SECTION 01 22 00.00 11 Page 3

POLLUTION PREVENTION PLAN (SWPPP) except as described in the paragraphs SILT FENCE AND CONSTRUCTION EXIT below. Any additional costs associated with Storm Water Pollution Prevention, other than these listed, shall be included in the contract price under Environmental Protection. The Government will pay all costs for the "Storm Water Pollution Prevention" at the contract unit price for each sub-item listed below as follows:

(1) Sixty percent of the unit price upon completion of the installation.

(2) The remaining 40 percent throughout the contract life, with a maximum of 20 percent being retained until final removal and cleanup of the premises.

The Contracting Officer will require the Contractor to furnish cost data to calculate the exact percentage to be paid upon installation.

1.3.2.1 Silt Fence

a. Measurement

Measurement for Silt Fence satisfactorily placed will be made by the linear foot.

b. Payment

Payment for Silt Fence as specified in Section 01 57 25.00 11 STORM WATER POLLUTION PREVENTION PLAN will be made at the contract unit price per linear foot for "Silt Fence" as broken down by the percentages above. Price and payment shall constitute full compensation for furnishing all plant, labor, materials and equipment, including geotextile fabric, and performing all operations necessary for the placement and maintenance of Silt Fence throughout the contract period, including final dressing and cleanup.

c. Unit of measure, Linear Foot: LF

1.3.2.2 Construction Exit

a. Measurement

Measurement for Construction Exit satisfactorily designed, constructed and maintained by the Contractor will be per each placed.

b. Payment

Payment for the temporary Construction Exit as specified in Section 01 57 25.00 11 STORM WATER POLLUTION PREVENTION PLAN, including its maintenance and removal, will be made at the contract unit price for "Construction Exit" as broken down by the percentages above. Price and payment shall constitute full compensation for furnishing the design and all plant, labor, equipment, mechanical street sweeper and material to complete the work as specified herein and as shown on the Task Order drawings including final dressing and cleanup.

c. Unit of measure, Each: EA

SECTION 01 22 00.00 11 Page 4

1.3.3 Stripping

a. Measurement

Measurement for Stripping shall be made by the acre, measured along the areas of work for embankment, excavation, and/or any other areas requiring Stripping as indicated on the plans. For measurement purposes the acreage will be computed to the nearest 1/10 of an acre for the satisfactorily completed and accepted work.

b. Payment

Payment for Stripping will be made at the contract unit price per acre for "Stripping," which price and payment shall constitute full compensation for furnishing all plant, labor, material, equipment, and performing all operations necessary for "Stripping" as specified in SECTION 31 11 00.00 11 - CLEARING, GRUBBING, AND STRIPPING. No separate or direct payment will be made for stockpiling and disposition of stripped materials. All costs in connection therewith will be considered as a subsidiary obligation of the Contractor. If regrowth of vegetation or trees occurs after stripping and before placement of embankment, the Contractor is required to strip again prior to embankment construction, no payment will be made for this additional stripping. Stripping of the borrow areas will not be measured for payment under this line item, but will be included in "Additional Borrow."

c. Unit of measure, Acre: AC

1.3.4 Excavation

a. Measurement

Measurement for Excavation shall be as specified in Section 00 80 00.00 11 SPECIAL CONTRACT REQUIREMENTS, in the paragraph entitled QUANTITY SURVEYS. The basis of measurement will be a cross section survey of the area after clearing, grubbing and stripping and a second cross section survey of the same area after the completion of the excavation. The quantity of excavation to be paid for will be computed between the before construction survey ground surface and the theoretical grades and slope lines shown on the Task Order drawings.

No allowance or payment will be made for over-depth excavation or for the removal of any material outside the required theoretical sections unless required by the Contracting Officer. Slides caused by fault of the Contractor or excavation performed for the convenience of the Contractor shall not be measured for payment.

b. Payment

Payment for excavation will be made at the contract unit price for "Excavation," which price includes all excavation of materials of whatever nature encountered as necessary to remove and construct culverts or other items to the lines and grades as shown for excavation on the Task Order drawings. Topsoil stripping will not be measured for payment under this line item, but will be included in "Stripping."

Payment will include all equipment and labor necessary for excavating, transporting and stockpiling of excavated material; final shaping and grading of excavated areas; all stockpiling of materials in segregated form to provide for required zoning of materials in excavation

SECTION 01 22 00.00 11 Page 5 backfilling; and all other incidental operations required to complete the work as specified in Section 31 00 00 EARTHWORK.

c. Unit of measure, Cubic Yard: CY

1.3.5 Geogrid

a. Measurement

Measurement for Geogrid satisfactorily installed shall be by the square yard, measured along the areas of work, as indicated on the Task Order drawings or indicated in the field by the Contracting Officer. No allowance will be made for waste, overlaps, damaged materials, repairs, or materials used for the convenience of the Contractor.

b. Payment

Payment for Geogrid will be made at the contract unit price per square yard for "Geogrid", which price and payment shall constitute full compensation for providing all plant, labor, and equipment, and performing all operations necessary for collecting and transporting the Geogrid from Ensley Engineer Yard in Memphis, TN to the job site and the complete and satisfactory installation of the Geogrid, all as specified in SECTION 31 00 00 EARTHWORK.

c. Unit of measure, Square Yard: SY

1.3.6 Compacted Backfill

a. Measurement

Measurement for Compacted Backfill shall be as specified in Section 00 80 00.00 11 SPECIAL CONTRACT REQUIREMENTS, in the paragraph entitled QUANTITY SURVEYS. The basis for the measurement will be cross sections of the areas to be filled, overlaid by the theoretical sections of the completed backfill or embankment constructed within the specified tolerance. Cross sections of the existing area to be filled shall be taken after clearing, grubbing, stripping, and, where applicable, excavation and after those areas have been graded out so that no depressions are present and the surface is ready to have fill introduced, but prior to commencement of benching operations if required. The cubic yardage to be paid for will be determined by the average end area method between the cross sections of the areas to be filled and the theoretical cross sections of the completed backfill or embankment. Backfill or embankment not constructed to specified grade and section including allowable tolerance as indicated on the Contractor's compliance survey will not be accepted. No allowance or payment will be made for backfill or embankment material placed outside the required theoretical grade and section. Unless otherwise approved by the Contracting Officer, the Contractor is to use on-site material obtained from the required excavations and/or from the existing levee slide to be repaired for fill material. Materials used for and placement of Compacted Backfill shall be in accordance with paragraph "Compacted Backfill", including all subparagraphs, in SECTION 31 00 00

EARTHWORK.

b. Payment

Payment for Compacted Backfill will be made at the contract unit price

SECTION 01 22 00.00 11 Page 6 per cubic yard for "Compacted Backfill," which price and payment shall constitute full compensation for furnishing all equipment and performing all labor for processing, placement and compaction of fill material as specified in SECTION 31 00 00 EARTHWORK and all other operations incidental thereto.

c. Unit of measure, Cubic Yard: CY

1.3.7 Establishment of Turf

a. Measurement

Measurement for Establishment of Turf shall be by the acre, measured along the slopes of the areas turfed within the right-of-way limits and computed to the nearest 1/10 of an acre for the satisfactorily completed and accepted work. Measurement for Establishment of Turf shall be limited to those areas specified in the Task Order drawings or indicated in the field by the Contracting Officer.

b. Payment

Payment for Establishment of Turf will be made at the contract unit price per acre for "Establishment of Turf," which price and payment shall constitute full compensation for furnishing all plant, labor, equipment, materials, and performing all operations necessary for Establishment of Turf as specified in SECTION 32 92 32.01 11 ESTABLISHMENT OF TURF. No payment for turfing will be made until acceptance by the Contracting Officer or his/her representative.

c. Unit of measure, Acre: AC

1.3.8 Additional Borrow

a. Measurement

Measurement for Additional Borrow shall be as specified in Section 00 80 00.00 11 SPECIAL CONTRACT REQUIREMENTS, in the paragraph entitled QUANTITY SURVEYS. The basis for the measurement will be cross sections of the areas remaining to be filled, overlaid by the theoretical sections of the completed backfill or embankment constructed within the specified tolerance. Cross sections of the areas remaining to be filled shall be taken after any required stripping, excavation, and placement and compaction of all available levee slide excavated material. The cubic yardage to be paid for will be determined by the average end area method between the cross sections of the areas remaining to be filled and the theoretical cross sections of the completed backfill or embankment. Backfill or embankment not constructed to specified grade and section including allowable tolerance as indicated on the Contractor's compliance survey will not be accepted. No allowance or payment will be made for backfill or embankment material placed outside the required theoretical grade and section. Unless otherwise approved by the Contracting Officer, the Contractor is to obtain the additional borrow material from the borrow areas indicated on the Task Order drawings. Materials obtained from the borrow areas shall meet the requirements specified in SECTION 31 00

00 EARTHWORK.

b. Payment

SECTION 01 22 00.00 11 Page 7

Payment for Additional Borrow will be made at the contract unit price per cubic yard for "Additional Borrow" which price and payment shall constitute full compensation for furnishing all material, equipment and labor, and performing all operations necessary for stripping, excavation, processing, hauling of suitable fill material to the job site, final shaping and grading of borrow areas. Payment for this item shall also include all operations necessary to establish and maintain haul road trafficability such as but not limited to scraping, grading, smoothing, compacting, matting or rafting, dust abatement, and any other operations necessary to maintain the road and upon project completion returning the haul road to its before construction state or better, and all other operations incidental thereto.

c. Unit of measure, Cubic Yard: CY

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION (Not Used)

-- End of Section --

SECTION 01 22 00.00 11 Page 8

DIVISION 31 - EARTHWORK

SECTION 31 00 00

EARTHWORK

08/08

PART 1 GENERAL

1.1 SCOPE

1.2 QUALITY CONTROL

1.3 APPLICABLE PUBLICATION

1.4 SUBMITTALS

PART 2 MATERIALS

2.1 Additional Borrow

PART 3 EXECUTION

3.1 EXCAVATION

3.1.1 General

3.1.2 Slide Excavation

3.1.3 Embedment of Stone Protection

3.2 DISPOSAL OF EXCAVATED MATERIAL

3.3 COMPACTED BACKFILL

3.3.1 General

3.3.2 Materials

3.3.3 Placement

3.3.4 Testing and Compaction

3.3.5 Additional Testing

3.4 SEMI-COMPACTED BACKFILL

3.4.1 General

3.4.2 Moisture Control

3.4.3 Compaction

3.4.3.1 Definition of Pass

3.4.3.2 Additional Compaction

3.5 LEVEE RESTORATION USING GEOGRID

3.5.1 Storage and Handling

3.5.2 Foundation Preparation

3.5.3 Installation

3.5.4 Placement of Geogrid

3.5.5 Testing and Compaction for Geogrid Restoration

3.6 SLIDES AND SHOALS

3.6.1 Excavated Material Disposal Areas

3.6.1.1 General

3.6.1.2 Slides Caused by Foundation Failure

3.6.1.3 Slides Not Caused by Foundation Failure

-- End of Section Table of Contents --

SECTION 31 00 00 Page 1

SECTION 31 00 00

EARTHWORK

08/08

PART 1 GENERAL

1.1 SCOPE

The work covered by this section consists of furnishing all plant, labor, materials, and equipment, and performing all operations necessary for excavation and disposal of material therefrom, backfill of excavations, levee restoration using geogrid, disposal of material and all other operations incidental thereto.

1.2 QUALITY CONTROL

The Contractor shall establish and maintain quality control for the work specified in this seSction to ensure compliance with the contract requirements and maintain records of his quality control for all construction operations including but not limited to the following:

(1) Layout, bottom width, grades, slopes, alignment, transitions, disposition of materials, slides.

(2) Disposal of Excavated Material. Layout, limits, maximum elevation, restricted areas, drainage, slopes.

(3) Compacted Backfill and Semi-Compacted Backfill. Layout, limits, grade and section, compaction, tolerances, suitability of materials.

(4) Slides and Shoals. Location, limits, methods and equipment used where remedial work has been directed.

A copy of these records and tests, as well as the records of corrective action taken, shall be furnished the Government.

1.3 APPLICABLE PUBLICATION

The following publications of the issue listed below, but referred to thereafter by basic designation only, form a part of this specification to the extent indicated by the references thereto:

ASTM INTERNATIONAL (ASTM)

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

ASTM D2488 (2009a) Description and Identification of Soils (Visual-Manual Procedure)

ASTM D6938 (2010) Standard Test Method for In-Place Density and Water Content of Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth)

SECTION 31 00 00 Page 2

ASTM D698 (2012; E 2014) Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/cu. ft. (600 kN-m/cu. m.))

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. The following shall be submitted in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-06 Test Reports

A Record Of All Classification Testing; G

Gradation

Standard Laboratory Density Tests; G

Results Of Field Density And Water Content Testing; G

Laboratory Density Tests

PART 2 MATERIALS

2.1 Additional Borrow

In the event the amount of excavated earth material from the levee slide excavations is insufficient to construct the final embankment specified in the Task Order, then the Contractor shall utilize the borrow areas provided by the Government which are shown on the Task Order drawings in order to obtain the additional suitable fill material required to complete the levee embankments. Soils shall be classified in conformance to ASTM D2488. A soil classification shall be performed and recorded for any borrow material. A record of all classification testing shall be submitted to the Government upon completion of the construction project or upon request at anytime during the construction of the work specified in the Task Order.

PART 3 EXECUTION

3.1 EXCAVATION

3.1.1 General

The Contractor shall excavate and remove all material of whatever nature encountered as may be necessary to produce the theoretical cross sections, bottom grade, and alignment, as indicated on the drawings furnished with each task order and/or specified herein. Excavation in the vicinity of bridges which cross the channel shall be performed in such a manner so as to only excavate that material necessary for construction of work under the task order, as shown in the drawings furnished with the task order and as stated herein. Smooth transitions shall be effected at the changes in side slopes and/or bottom widths, as indicated on the task order drawings or as directed. At the downstream and upstream limits of excavation, a smooth transition shall be excavated. A tolerance of two-tenths foot above or below (+/- 0.2') the theoretical cross section will be allowed provided

SECTION 31 00 00 Page 3 that abrupt changes do not occur and that drainage is maintained. Dressing of side slopes will not be required except as specified in 32 92 32.00 11 ESTABLISHMENT OF TURF. Refill of over-excavation will not be required except as necessary to meet the requirements specified hereinabove. No excavated material shall be allowed to drift or fall off into the channel during excavation operations. The excavation shall be commenced at the downstream limits of the work and shall be carried continuously upstream;

however, if weather, stream elevations, or other conditions are such that work cannot be effectively prosecuted in this order and work at other locations can be performed without endangering the work or other property, a change in the order of work may be authorized by the Contracting Officer.

All work shall be performed within the right-of-way limits as shown on the drawings provided in the Task Order.

3.1.2 Slide Excavation

The material in the slide areas shall be excavated to approximate excavation lines indicated on the Task Order drawings, but shall at all times be excavated beyond the failure surface. The final limits, lines and depths of such excavation shall be as directed by the Contracting Officer;

however, at no time shall the material in the slide areas be excavated to a slope steeper than indicated on the Task Order drawings. The excavations shall be made in such manner as to provide drainage away from the levee at all times. Excavation of the slides shall be performed with a dragline, backhoe, a bulldozer (for the bulk of the excavation in a slide), or other approved equipment in such manner that will not place a surcharge within 15 feet of the edges of the slides and in such manner that material will be excavated commencing at the top of each slide and progressing downward.

Excavation of a slide shall be completed in its entirety prior to placement of levee restoration embankment in the excavated area.

3.1.3 Embedment of Stone Protection

The Contractor shall excavate, in areas where bedding material and riprap are required, in such a manner that the bedding material and riprap are placed beneath the theoretical cross section as indicated on the drawings provided in the task order. Tolerances for such excavation shall be subject to the tolerances for bedding material and riprap as specified in SECTION

35 31 19.00 11 - STONE PROTECTION.

3.2 DISPOSAL OF EXCAVATED MATERIAL

Suitable excavated material shall be utilized to the extent necessary to backfill the excavations. Excavated material which is not utilized in the backfill shall be placed in a disposal area indicated by the Contracting Officer. Material placed in the disposal area shall be placed with slopes as indicated by the Contracting Officer and shall be dressed to provide smooth even surfaces, and in such manner that drainage will result.

Placement of excavated material shall be such that water will not be impounded. Excavated material shall be disposed of within the right-of-way limits as indicated on the Task Order drawings and/or specified herein.

Slopes on the Task Order drawings and those prescribed hereinafter define the limits of the area within which excavated material must be confined but do not necessarily indicate stable slopes for such material. The Contractor shall be responsible for placing the various materials to be disposed of in such locations within the prescribed disposal areas that they will not flow or slide outside the disposal areas. The height of excavated material embankment may vary but shall at no time exceed 2 feet above natural ground as indicated therefor on the Task Order drawings. The back slopes of

SECTION 31 00 00 Page 4 excavated material embankment shall be as indicated on the Task Order drawings. End slopes of the excavated material embankment shall be not steeper than 1V on 3H. Side slopes of excavated material embankment shall be as indicated on the Task Order drawings.

Dressing of the material will be required as necessary to provide drainage and the specified dimensions and slopes and as specified in Section 32 92 32.01 11 ESTABLISHMENT OF TURF. Some drifting of material may be required at some locations in order that excavated material be disposed of as specified herein and/or as indicated on the Task Order drawings. The Contractor shall perform all drifting of material as may be necessary to dispose of excavated material as specified herein and/or indicated on the Task Order drawings and no separate payment will be made therefor.

Compaction will not be required except as specified hereinabove and except that obtained in the process of placing and dressing. Sunken logs, stumps, driftwood, existing culverts and other debris removed concurrently with the excavation shall be disposed of as specified for clearing debris in paragraph 3.5.1 of SECTION 31 11 00.00 11 CLEARING, GRUBBING, AND STRIPPING.

The disposal of excavated material not used as backfill shall be incidental to and paid for under the bid item "Excavation".

3.3 COMPACTED BACKFILL

3.3.1 General

Compacted backfill materials shall be placed to the lines, grades, and sections as indicated therefor on the drawings provided in the Task Order.

The Contracting Officer will determine the suitability of each section of the foundation for placing materials thereon.

3.3.2 Materials

Materials for compacted backfill shall be those materials resulting from the required excavation which, in the opinion of the Contracting Officer, are suitable for such embankment work. No unsuitable organic or inorganic matter, sticks, trash, building debris, brush, trees, tree roots, stumps, rubbish, sod, muck, frozen material or any other objectionable matter shall be placed therein. The Contractor shall, when directed, remove any materials that the Contracting Officer considers objectionable in the backfill.

3.3.3 Placement

Compacted backfill shall be placed in layers not exceeding 6 inches in thickness prior to compaction. Any approved equipment may spread the materials and each layer shall be compacted as specified in 3.3.4 below.

Fill within two feet of culverts shall be compacted by means of hand-operated mechanical tampers. All fills shall be kept thoroughly drained and no fill shall be placed on frozen ground. When, in the opinion of the Contracting Officer, the surface of any layer is too smooth to bond properly with the succeeding layer, it shall be adequately scarified before the succeeding layer is placed. A tolerance of two-tenths of one foot above the prescribed grade and cross section will be permitted in the final dressing.

3.3.4 Testing and Compaction

Prior to the placement of Compacted Fill at this site, the Contractor will

SECTION 31 00 00 Page 5 perform standard laboratory density tests as specified in ASTM D698 (Standard Proctor Compaction Test) for each type of material used in the compacted fill to determine optimum water content and maximum densities. A copy of the standard laboratory density tests shall be submitted to the government.

The materials for compacted fill shall be placed or spread in layers, the first or bottom layer and the last two layers not more than 6 inches in loose lift thickness and all layers between the first and the last two layers not more than 12 inches in loose lift thickness prior to compaction except the first layer on top of the geotextile shall be 12 inches. The first and each successive layer of compacted fill material shall be compacted to at least 95 percent of maximum dry density as determined by ASTM D698 at the optimum moisture content or within plus 3 percentage points of optimum moisture content determined from ASTM D698. For the first layer above the geotextile, a tractor having a ground pressure no greater than 4.7 psi plus or minus 0.2 psi shall be used to spread and then compact the layer.

The contractor shall perform a minimum of (1) field density test and moisture content, in accordance with ASTM D698, on each lift or for every 500 cubic yards of Compacted Fill placement, whichever is more frequent, unless otherwise specified in the Task Order. The horizontal locations of these tests shall be randomly staggered in the Compacted Fill by the contractor with all locations approved by the contracting officer to assure that proper compaction is being achieved. Compacted Fill and backfills not meeting the required specifications for density or water content shall be retested after corrective measures have been applied. The field density determination shall be by the Nuclear Method (ASTM D6938, Method B). The field moisture content after compaction shall be determined in accordance with ASTM D2216 or ASTM D6938. All results of field density and water content testing shall be submitted to the government.

3.3.5 Additional Testing

The Contracting Officer may request additional tests if the Contracting Officer determines that the Contractor's testing is inadequate or the Contractor is concentrating backfill and fill operations in a relatively small area. Additional Testing will be performed at no additional cost to the Government.

3.4 SEMI-COMPACTED BACKFILL

3.4.1 General

Semi-compacted backfill shall be constructed to line, grade and cross sections as shown on the drawings provided in the Task Order.

Semi-compacted backfill shall not be placed in water. The materials for semi-compacted backfill shall be placed or spread in layers, the first layer not more than 6 inches (6”) in thickness and the succeeding layers no more than 12 inches (12”) in thickness prior to compaction. When the surface of any compacted layer is too smooth to bond properly with the succeeding layer, it shall be adequately scarified before the next layer is placed thereon.

3.4.2 Moisture Control

It is intended that the material will be placed in the backfill at its natural moisture content. No moisture control will be required by the

SECTION 31 00 00 Page 6

Contractor unless, in the opinion of the Contracting Officer, the desired compaction is not being obtained with the prescribed compactive effort due to the material being too wet or too dry. In such cases, the Contractor will be directed to perform moisture control as prescribed below. If the material is too wet, it shall either be stockpiled and allowed to drain before it is placed in the embankment cross sections and/or the wet material shall be processed by disking and harrowing, if necessary, until the moisture content is reduced sufficiently. If the material is too dry, sufficient moisture shall be uniformly distributed in each layer before compaction. If the Contractor is directed to perform any moisture control as outlined in this paragraph, an equitable adjustment in the contract price and time will be made.

3.4.3 Compaction

When the moisture content and conditions of the spread layers are satisfactory, each layer shall be compacted by the following method:

(1)Crawler-Type Tractor. Crawler-type tractors used for compaction shall weight not less than 20,000 pounds, shall exert a unit tread pressure of not less than six pounds per square inch (6psi) and shall be operated at speeds not to exceed 3.5 miles per hour. Three complete passes over each layer will be required. The tractor will not be considered to be compacting while spreading materials.

3.4.3.1 Definition of Pass

A pass shall consist of one complete coverage of the surface of a layer by the treads of the roller, tractor or other compacting equipment. Portions of the backfill that the compacting equipment cannot reach for any reason shall be compacted by an approved method to the density at least equal to that of the surrounding embankments.

3.4.3.2 Additional Compaction

If, in the opinion of the Contracting Officer, the desired compaction of any portion of the backfill cannot be secured by the minimum number of passes specified, additional complete passes shall be made over the surface area of such designated portion until the desired compaction has been obtained. An equitable adjustment in the contract price and time will be made.

3.5 LEVEE RESTORATION USING GEOGRID

3.5.1 Storage and Handling

The geogrid materials shall be furnished by the Government and installed by the Contractor. The Contractor shall be required to obtain the geogrid materials from Ensley Engineer Yard (EEY), 2915 Riverport Rd., Shelby County, Memphis, TN 38109. Coordinate with the Area Engineer listed on the Task Order to establish a point of contact for scheduling Contractor pick-up of geogrid at Ensley. The geogrid shall be stored at a temperature above –20 degrees F and shall be protected from direct sunlight, ultra-violet rays, temperatures greater than 140 degrees F, mud, dirt, dust and debris. Rolled geogrid may be laid flat or stood on end for storage. To the maximum extent possible, the geogrid shall be maintained wrapped in a heavy-duty protective covering.

SECTION 31 00 00 Page 7

3.5.2 Foundation Preparation

Areas on which the geogrid is to be placed shall be dressed to remove humps and depressions within the slope lines and to provide relatively smooth and uniform surfaces to conform to the cross sections shown on the Task Order drawings and as described in these specifications. The foundation shall be compacted to at least 95 percent of maximum dry density as determined by ASTM D698 (Standard Proctor Compaction Test) at the optimum moisture content or within plus 3 percentage points of optimum moisture content determined from ASTM D698. Immediately prior to placing the geogrid, the prepared base will be inspected by the Contracting Officer. No geogrid shall be placed until those areas of prepared base have been approved.

3.5.3 Installation

The geogrid shall be placed at the proper elevation and orientation as shown on the drawings provided in the Task Order. At the time of installation, geogrid will be rejected if it has defects, rips, holes, flaws, deterioration or damage incurred during manufacture, transportation or storage. Geogrids shall be placed smooth and taut and free of folds, wrinkles or creases. Primary geogrids shall be a continuous strip of reinforcement placed perpendicular to the levee centerline. Overlaps in the direction of primary reinforcement, perpendicular to the levee centerline, will be a minimum for four feet (4') at the end of each roll. Secondary geogrids, those placed parallel to the levee centerline, shall be overlapped four feet (4') at the end of each roll. The use of staples, pins or fill to secure the geogrids is acceptable during construction to prevent movement during installation.

3.5.4 Placement of Geogrid

After excavation of the levee slide, a primary layer of geogrid shall be placed the full width of the excavation. Primary layers of geogrid are defined to be geogrid rolled perpendicular to the levee centerline.

Following placement of the geogrid, a twelve-inch (12") layer of backfill shall be placed and compacted as specified in paragraph 3.3 entitled 'Compacted Backfill'. After this step, a secondary layer of geogrid (geogrid material rolled parallel to the levee centerline) shall be placed so that it extends from the face of the slope to a minimum of four and one-half feet (4'-6") to a maximum of five and one-half feet (5'-6") into the levee, as shown on the drawings provided in the Task Order. The primary layers of geogrid and the secondary layers of geogrid shall be placed at a minimum of six inches (6") and not to exceed a maximum of twelve inches (12") from the face of the slope, as shown on the drawings provided in the Task Order. The secondary layer of geogrid shall also be covered by a twelve inch (12") layer of backfill placed and compacted as described Paragraph 3.3 above. The procedure of alternating primary and secondary layers of geogrid over a twelve-inch (12") compacted lift shall be repeated until there is insufficient levee height to provide a minimum of twelve inches (12") of cover over the last layer of reinforcement. At this point, finish dressing to the levee slope shall be provided. A tolerance of two-tenths of one foot (0.2') above the prescribed grade and section will be allowed in the final dressing provided that any excess material is so distributed that there are no abrupt humps or depressions in the surface.

3.5.5 Testing and Compaction for Geogrid Restoration

The testing and compaction requirements provided in paragraph 3.3.4 entitled 'Testing and Compaction' also apply to levee restoration using

SECTION 31 00 00 Page 8 geogrid unless otherwise specified in the Task Order.

3.6 SLIDES AND SHOALS

3.6.1 Excavated Material Disposal Areas

3.6.1.1 General

In the event slides occur in any part of the excavated material disposal areas placed under the task order, during construction or after completion, but prior to final acceptance of all work under the contract, the Contractor, upon receipt of written order of the Contracting Officer, shall repair the slides as directed.

3.6.1.2 Slides Caused by Foundation Failure

In case the slide was caused by a foundation failure not due to the fault of the Contractor, the Contractor will be paid for its repair. An equitable adjustment in the contract price will be made in accordance with the CONTRACT CLAUSE entitled "Changes." In case the slide is caused through the fault of the Contractor, the repairs shall be made at no additional cost to the Government.

3.6.1.3 Slides Not Caused by Foundation Failure

Except as provided in the SLIDES CAUSED BY FOUNDATION FAILURE paragraph above, any material which flows or slides outside of the excavated material disposal limits shall be removed by the Contractor and replaced within the prescribed disposal limits at no cost to the Government.

-- End of Section --

SECTION 31 00 00 Page 9

DIVISION 31 - EARTHWORK

SECTION 31 11 00.00 11

CLEARING, GRUBBING AND STRIPPING

10/10/15

PART 1 GENERAL

1.1 SCOPE

1.2 SUBMITTALS

1.3 DELIVERY, STORAGE, AND HANDLING

1.4 QUALITY CONTROL

PART 2 PRODUCTS

2.1 TREE WOUND PAINT

2.2 HERBICIDE

PART 3 EXECUTION

3.1 PROTECTION

3.1.1 Roads and Walks

3.1.2 Trees, Shrubs, and Existing Facilities

3.1.3 Utility and Telecommunication Lines

3.1.4 Cemeteries

3.2 CLEARING

3.3 GRUBBING

3.4 STRIPPING

3.5 TREE REMOVAL

3.6 PRUNING

3.7 DISPOSAL OF MATERIALS

3.7.1 General

3.7.2 Burning

3.7.3 Air Curtain Burning

3.7.4 Chipping

3.7.5 Removal from Site

3.7.6 Saleable Timber

-- End of Section Table of Contents --

SECTION 31 11 00.00 11 Page 1

SECTION 31 11 00.00 11

CLEARING, GRUBBING AND STRIPPING

10/10/15

PART 1 GENERAL

1.1 SCOPE

The work covered by this section consists of furnishing all plant, labor, materials, equipment, and performing all work in strict accordance with the specifications, schedules, and drawings in connection with the Task Order, including disposition of material generated by this work.

1.2 SUBMITTALS

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

submittals not having a "G" designation are for information only or as otherwise designated. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with Section

01 33 00 SUBMITTAL PROCEDURES:

SD-04 Samples

Tree wound paint

Herbicide

Submit samples in cans with manufacturer's label.

1.3 DELIVERY, STORAGE, AND HANDLING

Deliver materials to, store at the site, and handle in a manner which will maintain the materials in their original manufactured or fabricated condition until ready for use.

1.4 QUALITY CONTROL

The Contractor shall establish and maintain quality control for all clearing, grubbing and stripping operations to assure compliance with contract requirements, and shall maintain records of his quality control for all construction operations, including but not limited to the following:

(1) Limits of clearing, grubbing and stripping including location and heights.

(2) Quality and completeness of clearing, grubbing and stripping.

(3) Proper disposition of clearing, grubbing and stripping material.

If applicable, method and location of burning.

(4) If burning is applicable, method for prevention of fire damage to standing timber and improvements.

(5) Grubbing and stripping locations, limits, depths, refill of holes

SECTION 31 11 00.00 11 Page 2 and compaction.

A copy of the inspection and tests, as well as the records of corrective action taken, shall be furnished the Government.

PART 2 PRODUCTS

2.1 TREE WOUND PAINT

Bituminous based paint of standard manufacture specially formulated for tree wounds.

2.2 HERBICIDE

Comply with Federal Insecticide, Fungicide, and Rodenticide Act (Title 7 U.S.C. Section 136) for requirements on Contractor's licensing, certification and record keeping.

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 Trees, Shrubs, and Existing Facilities

Trees and vegetation to be left standing shall be protected from damage incidental to clearing, grubbing, stripping and construction operations by the erection of barriers or by such other means as the circumstances require.

3.1.3 Utility and Telecommunication Lines

Protect existing utility and telecommunication lines that are to remain in place. Notify the Contracting Officer immediately of damage to or an encounter with an unknown existing utility or telecommunication line. The Contractor shall be responsible for the repairs of damage to existing utility and telecommunication lines that are indicated or made known to the Contractor prior to start of clearing, grubbing and stripping. When utility and/or telecommunication lines, which are to be removed, are encountered within the area of operations, the Contractor shall notify the Contracting Officer in ample time to minimize interruption of the service.

3.1.4 Cemeteries

If cemeteries are in the area to be cleared, grubbed or stripped, the Contractor shall not disturb or destroy any grave marker, or allow any vehicle to pass over a grave, or otherwise disturb the surface of the ground over any grave. The Contractor shall adequately mark the graves to insure that equipment does not work in the area.

3.2 CLEARING

Clearing limits will be shown or specified on the plans provided in the Task Order. Clearing shall consist of the felling, trimming, and cutting of trees into sections and the satisfactory disposal of the trees and other vegetation designated for removal, including all growth, stumps, downed

SECTION 31 11 00.00 11 Page 3 timber, partially buried logs, snags, brush, abandoned piling, and rubbish occurring within the areas to be cleared. Clearing shall also include the removal and disposal of structures that obtrude, encroach upon, or otherwise obstruct the work. Before clearing operations begin, the Contractor shall mark or designate all trees that are to be left standing/undisturbed. Trees, stumps, roots, brush, and other vegetation in areas to be cleared shall be cut off flush with or below the original ground surface, except such trees and vegetation to be left standing.

Trees designated to be left standing within the cleared areas shall be trimmed of dead branches 1-1/2 inches…