B08 - W9123822B0008 - Attachment 09 Specifications Supplemental.pdf

PL 84-99 Emergency Levee Repair Spec No. 2276 Site 1151-21 - San Joaquin River

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 20 00

PRICE AND PAYMENT PROCEDURES

08/15

PART 1 GENERAL

1.1 SUBMITTALS

1.2 SINGLE JOB PAYMENT ITEMS

1.2.1 Mobilization and Demobilization

1.2.1.1 Payment

1.2.1.2 Unit of Measure

1.2.2 SWPPP Design and Implementation

1.2.2.1 Payment

1.2.2.2 Unit of Measure

1.2.3 Temporary Fencing, Signage, and Traffic Control

1.2.3.1 Payment

1.2.3.2 Unit of Measure

1.3 UNIT PRICE PAYMENT ITEMS

1.3.1 Clearing and Grubbing

1.3.1.1 Payment

1.3.1.2 Unit of Measure

1.3.2 Stripping

1.3.2.1 Payment

1.3.2.2 Measurement

1.3.2.3 Unit of Measure

1.3.3 Filter Sand

1.3.3.1 Payment

1.3.3.2 Measurement

1.3.3.3 Unit of Measure

1.3.4 Drain Blanket

1.3.4.1 Payment

1.3.4.2 Measurement

1.3.4.3 Unit of Measure

1.3.5 Type II Fill

1.3.5.1 Payment

1.3.5.2 Measurement

1.3.5.3 Unit of Measure

1.3.6 Geotextile for Toe Road

1.3.6.1 Payment

1.3.6.2 Measurement

1.3.6.3 Unit of Measure

1.3.7 Seepage Berm Toe Material

1.3.7.1 Payment

1.3.7.2 Measurement

1.3.7.3 Unit of Measure

1.3.8 Hydroseeding

1.3.8.1 Payment

1.3.8.2 Measurement

1.3.8.3 Unit of Measure

1.3.9 Aggregate Surfacing

SECTION 01 20 00 Page 1 April 2022

AM0003

1.3.9.1 Payment

1.3.9.2 Measurement

1.3.9.3 Unit of Measure

1.3.10 Fencing

1.3.10.1 Payment

1.3.10.2 Measurement

PART 2 PRODUCTS

PART 3 EXECUTION

3.1 CONTRACT COST BREAKDOWN

3.2 INVOICE SUBMISSION PROCEDURES

3.2.1 Required Procedure

3.2.2 Required Documents

-- End of Section Table of Contents --

SECTION 01 20 00 Page 2 April 2022

SECTION 01 20 00

PRICE AND PAYMENT PROCEDURES

08/15

PART 1 GENERAL

1.1 SUBMITTALS

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Preconstruction Submittals

Contract Cost Breakdown

1.2 SINGLE 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, are included in the listed job item most closely associated with the work involved. The job price and payment made for each item listed constitutes full compensation for furnishing all plant, labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, meeting safety requirements, tests and reports, and for performing all work required for which separate payment is not otherwise provided.

1.2.1 Mobilization and Demobilization

1.2.1.1 Payment

Measurement and payment for mobilization, demobilization, staging areas, temporary construction facilities, and for all other work covered by the Project Specifications, as defined in Section 01 71 10 MOBILIZATION AND DEMOBILIZATION, shall be made at the Contract job price for item "MOBILIZATION AND DEMOBILIZATION"; which payment must constitute full compensation for all the Work involved in mobilization and demobilization as shown or specified in the Contract documents, and directed by the Contracting Officer, including preparation of stagng areas, improvements to existing ramps for construction access, and restoration of staging areas. Mobilization and Demobilization must be cost loaded 60 percent mobilization and 40 percent demobilization. Final As-Built Drawings shall be cost loaded one half of one percent of the awarded contract as a portion of the demobilization amount.

1.2.1.2 Unit of Measure

Unit of measure: job.

SECTION 01 20 00 Page 3 April 2022

1.2.2 SWPPP Design and Implementation

1.2.2.1 Payment

Payment will be made for costs associated with SWPPP design and implementation as defined in Section 01 57 23 TEMPORARY STORMWATER POLLUTION CONTROL as shown on the Plans, and as directed by the Contracting Officer at the Contract lump sum price for item "SWPPP DESIGN AND IMPLEMENTATION". Payment shall constitute full compensation for all work involved in storm water pollution control including installation and removal of best management practices for erosion control, spill control, monitoring, providing updates to the SWPPP, rain event action plan, and record keeping as required by law, as shown in the Contract documents.

Payment will not include permanent erosion control and seeding as specified under section 32 92 19 SEEDING, which is covered by bid item "Hydroseeding.”

1.2.2.2 Unit of Measure

Unit of measure: job.

1.2.3 Temporary Fencing, Signage, and Traffic Control

1.2.3.1 Payment

Payment will be made for costs associated with the preparation and implementation of the traffic control plan as defined in Section 01 50 00 TEMPORARY CONSTRUCTION FACILITIES AND CONTROLS at the contract lump sum price for item "TEMPORARY FENCING, SIGNAGE, AND TRAFFIC CONTROL". Payment shall constitute full compensation for all work involved in the protection of traffic along haul routes and at access points as required by local, state and federal regulations, including all barriers, lights, signals, detours, and other ancillary requirements.

1.2.3.2 Unit of Measure

Unit of measure: job.

1.3 UNIT PRICE PAYMENT ITEMS

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

1.3.1 Remove Existing Emergency Seepage Berm

1.3.1.1 Payment

The bid item "removal of existing emergency berm" is an optional task. The existing emergency berm is planned to be removed by the locals or DWR prior to the construction of the seepage berm by the Contractor. If, alternatively, the Contractor is asked to perform this task of removal of existing emergency seepage berm then the payment is defined herein.

Payment for removal of existing emergency seepage berms will be paid at

SECTION 01 20 00 Page 4 April 2022 the Contract bid price for "REMOVAL OF EXISTING EMERGENCY BERM". This price must constitute full compensation for all equipment, labor, materials and all incidentals necessary to complete the work as shown or specified in the Contract documents, or as directed by the Contracting Officer, including excavation of the crushed aggregate and hauling to staging or stockpile areas for reuse (provided the materials meet the requirements of the Specifications) or hauling to an approved waste location.

1.3.1.2 Unit of Measure

Unit of Measure: cubic yard

1.3.1 Clearing and Grubbing

1.3.1.1 Payment

Clearing and grubbing, and the disposal of the materials from this operation and for all other related work as defined in Section 31 11 00 CLEARING, GRUBBING, AND STRIPPING, must be paid at the Contract unit price for "CLEARING AND GRUBBING". This price must constitute full compensation for furnishing all labor, materials, equipment and incidentals, and doing all work necessary to complete the clearing and grubbing including removal of rocks, debris, existing aggregate surfacing, existing landslide toe fence, existing vineyards within the work limits and all other deleterious items as noted on or specified in the Contract documents and as directed by the Contracting Officer, including disposal or salvage of materials, and restoring all ground surfaces including filling of holes that result from grubbing operations.

1.3.1.2 Measurement

Clearing and grubbing must be measured for payment to the nearest 0.1 acre based upon horizontal area surveys.

1.3.1.2 Unit of Measure

Unit of measure: acrejob.

1.3.2 Stripping

1.3.2.1 Payment

Payment for stripping as defined in Section 31 11 00 CLEARING, GRUBBING, AND STRIPPING will be made at the Contract bid price for "STRIPPING". This price shall constitute full compensation for all equipment, labor, materials and incidentals necessary to complete the work as shown or specified in the Contract documents, or as directed by the Contracting Officer. Payment shall constitute full compensation for stripping, stockpiling, transportation, loading, unloading, and placement as described in the Contract Documents.

1.3.2.2 Measurement

Stripping shall be measured for payment to the nearest cubic yard. The basis for measurement will be surveys taken after clearing and grubbing operations and after stripping operations to the depths shown on the Plans or directed by the Contracting Officer. Survey cross sections must be performed at significant breaks in grade except that the maximum distance

SECTION 01 20 00 Page 5 April 2022 between cross sections must not exceed 100 feet .

1.3.2.3 Unit of Measure

Unit of measure: cubic yard.

1.3.3 Filter Sand

1.3.3.1 Payment

Payment will be made for Filter Sand for the seepage berm as defined in Section 31 00 00 EARTHWORK at the Contract bid price for "FILTER SAND FOR SEEPAGE BERM". Payment must constitute full compensation for furnishing all plant, labor, equipment, materials, and performing all operations necessary for foundation preparation, hauling material from staging areas, borrow areas or stockpiles, blending, placing and compacting the material, materials testing, and moisture control. Payment will cover shrinkage, settlement, and losses and there will be no allowance/payment for the quantity based on shrinkage, settlement, or other losses.

1.3.3.2 Measurement

Material specified for Filter Sand must be measured for payment by the cubic yard, in place, and quantities will be determined by the average end area method to the nearest cubic yard. The basis for measurement will be surveys of the areas to be filled taken after placement of filter sand to the tolerances specified. Cross sections must be performed at significant breaks in grade except that the maximum distance between cross sections must not exceed 100 feet .

1.3.3.3 Unit of Measure

Unit of measure: cubic yard.

1.3.4 Drain Blanket

1.3.4.1 Payment

Payment will be made for Drain Blanket as defined in Section 31 00 00 EARTHWORK at the Contract bid price for "DRAIN BLANKET". Payment must constitute full compensation for furnishing all plant, labor, equipment, materials, and performing all operations necessary for foundatio preparation, hauling material from staging areas, borrow areas or stockpiles, blending, placing and compacting the material, materials testing, surveying, and moisture control. Payment will cover shrinkage, settlement, and losses and there will be no allowance/payment for the quantity based on shrinkage, settlement, or other losses.

1.3.4.2 Measurement

Material specified for Drain Blanket must be measured for payment by the cubic yard, in place, and quantities will be determined by the average end area method to the nearest cubic yard. The basis for measurement will be surveys of the areas to be filled taken after placement of filter sand and drain blanket to the tolerances specified. Cross sections must be performed at significant breaks in grade except that the maximum distance between cross sections must not exceed 100 feet .

SECTION 01 20 00 Page 6 April 2022

1.3.4.3 Unit of Measure

Unit of measure: cubic yard.

1.3.5 Type II Fill

1.3.5.1 Payment

Payment will be made for Type II Fill as defined in Section 31 00 00 EARTHWORK at the Contract bid price for "TYPE II FILL". Payment must constitute full compensation for furnishing all plant, foundation preparation, hauling material from staging areas, borrow areas or stockpiles, blending, placing and compacting the material, materials testing, surveying, and moisture control. Payment will cover shrinkage, settlement, and losses and there will be no allowance/payment for the quantity based on shrinkage, settlement, or other losses.

1.3.5.2 Measurement

Material specified for Type II Fill must be measured for payment by the cubic yard, in place, and quantities will be determined by the average end area method to the nearest cubic yard. The basis for measurement will be surveys of the areas to be filled taken placement of filter sand and after placement of Type II Fill to the tolerances specified and before placement of topsoil. Cross sections must be performed at significant breaks in grade except that the maximum distance between cross sections must not exceed 100 feet.

1.3.5.3 Unit of Measure

Unit of measure: cubic yard.

1.3.6 Geotextile for Toe Road

1.3.6.1 Payment

Payment will be made for Geotextile Separator placed below the toe road as defined in Section 31 05 19 GEOTEXTILE and shown on the Plans at the Contract bid price for "GEOTEXTILE FOR TOE ROAD". Payment must constitute full compensation for furnishing all plant, labor, equipment, materials, and performing all operations necessary for hauling material to the site and placing the geotextile per manufacturer's recommendations. Overlaps of adjacent sheets of geotextile will not be compensated for separately.

1.3.6.2 Measurement

Geotextile Separator will be measured for payment to the nearest square yard. Quantities for payment will be verified by surveys of the placed geotextile.

1.3.6.3 Unit of Measure

Unit of measure: square yard.

1.3.7 Seepage Berm Toe Material

1.3.7.1 Payment

Payment will be made for Seepage Berm Toe as defined in Section 31 00 00

SECTION 01 20 00 Page 7 April 2022

EARTHWORK at the Contract bid price for "SEEPAGE BERM TOE MATERIAL".

Payment must constitute full compensation for furnishing all plant, foundation preparation, hauling material from staging areas, borrow areas or stockpiles, blending, placing and compacting the material, materials testing, surveying, and moisture control.

1.3.7.2 Measurement

Seepage Berm Toe Material must be measured for payment by the cubic yard, in place, and quantities will be determined by the average end area method to the nearest cubic yard. The basis for measurement will be surveys of the areas to be filled taken after construction of the seepage berm and after placement of seepage berm toe material. Cross sections must be performed at significant breaks in grade except that the maximum distance between cross sections must not exceed 100 feet .

1.3.7.3 Unit of Measure

Unit of measure: cubic yard.

1.3.8 Hydroseeding

1.3.8.1 Payment

Hydroseeding as defined in Section 32 92 19 SEEDING will be paid for at the Contract unit price under Bid Item "HYDROSEEDING". Payment must constitute full compensation for furnishing all plant, labor, equipment, materials, and performing all operations necessary for the top soil placement and hydroseeding the disturbed surfaces during construction as shown on the Contract Documents.

1.3.8.2 Measurement

Hydroseeding will be measured for payment to the nearest 0.1 acre by horizontal area survey.

1.3.8.3 Unit of Measure

Unit of measure: acre.

1.3.9 Aggregate Surfacing

1.3.9.1 Payment

Aggregate surfacing as defined in Section 32 15 00 AGGREGATE SURFACING will be paid for at the contract unit price under Bid Item "AGGREGATE SURFACING". Payment will constitute full compensation for the construction and completion of the work, including material, subgrade preparation, and furnishing all labor and incidentals necessary to complete the work as defined in the Contract Documents.

1.3.9.2 Measurement

Aggregate surfacing will be measured for payment to the nearest 0.1 ton.

Quantities for payment will be certified by individual truck weight tickets delivered to the Project Site at the time of delivery of each truckload of material. Moisture content not exceeding six percent by weight will be acceptable in determining payment quantities. Deductions will be made from the certified weight for moisture in excess of this amount and for materials in excess of the allowable thickness.

SECTION 01 20 00 Page 8 April 2022

1.3.9.3 Unit of Measure

Unit of measure: ton.

1.3.10 Fencing

1.3.10.1 Payment

Payment will be made for Fencing and 2 gates specified on the Drawings and installed along the toe road as shown on the Plans at the Contract bid price for "FENCING". Payment must constitute full compensation for furnishing all labor, equipment, materials, and performing all operations necessary for hauling material to the site and installing the fence per manufacturer's recommendations.

1.3.10.2 Measurement

Fencing will be measured for payment to the nearest Linear Feet.

Quantities for payment will be as per the Drawings and as verified by survey of the installed fencing.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

3.1 CONTRACT COST BREAKDOWN

The Contractor must furnish within 15 days after the date of Notice to Proceed, and prior to the submission of its first partial payment estimate, a breakdown of its single job pay item or items which will be reviewed by the Contracting Officer as to propriety of distribution of the total cost to the various accounts. Any unbalanced items as between early and late payment items or other discrepancies will be revised by the Contracting Officer to agree with a reasonable cost of the work included in the various items. This Contract cost breakdown will then be utilized as the basis for progress payments to the Contract.

3.2 INVOICE SUBMISSION PROCEDURES

References include USACE QMS, FAR 52.232-5, Payments under Fixed-Price Construction Contracts, and FAR 52.232-27, Prompt Payment for Construction Contracts.

3.2.1 Required Procedure

a. The payment request process must begin with the scheduling meeting.

Section 01 32 01 PROJECT SCHEDULE states: "Use the schedule as the basis for determining contract earnings during each update period and therefore the amount of each progress payment." The QA Representative or Project Engineer will meet with the Contractor each month and mutually agree to the quantities and lump sum percentages to be invoiced prior to the Contractor's official invoice being submitted to the Administrating Office.

b. The Contractor shall print a copy of the Contractor's Pay Request Form from RMS to record the mutually agreed upon quantities and

SECTION 01 20 00 Page 9 April 2022 percentages. NOTE: Contractor earnings shall not be projected. This form shall be signed and dated by the QA Representative and the Contractor. Consideration will be given to safety, submittals, Contractor Quality Control (CQC), acceptable work, as well as overall progress. In the case of deficient work, withholding the cost of removal and reconstruction shall be considered.

c. Contractor must submit a preliminary payment request worksheet to the Quality Assurance (QA) Representative. This document is printed from RMS, which lists not only the pay activities for which payment is requested, but also lists any Contractor action items e.g. outstanding submittals, payrolls, quality control items, etc. Contractor must submit documentation, surveys, concrete calculations, and weight tickets for tonnage items.

d. QA Representative will meet with the Contractor to determine if the preliminary pay request and corresponding back-up is acceptable. The QA Representative shall enter the approved percentages or quantities on the preliminary pay request worksheet, ensuring that consideration has been made to all Contractor action items that have not been completed or corrected. Both parties will sign and date the last page.

e. Contractor must submit the formal pay request package to the Administrating Office (original) and the QA Representative (copy), incorporating any changes made on the preliminary pay request on or before the 10th of the month. Contractor must also enter the pay request into RMS.

3.2.2 Required Documents

Pay request packages from Contractors must include the following documents:

a. Prompt Payment Certification and Requested Earnings printed from RMS and wet signed.

b. Preliminary payment request worksheet, signed and dated by both parties.

c. Required documentation includes surveys (PDF and CAD), cross-sections, QC test results, and weight tickets.

d. Updated approved schedule (progress chart or NAS with narrative report as specified).

e. Safety Exposure Report (hard copy not required, will be verified in

RMS).

f. Current Submittal Register (hard copy not required, will be verified in RMS).

g. Current QC Test Log (hard copy provided and all tests entered in RMS).

h. Certified Payrolls (prime and subs at all tiers) entered in RMS and submitted to the Administrating Office.

If the progress payment request is missing any of the above items or imports into RMS, the Administrating Office will notify the Contractor within 7 days and suspend the processing of the progress payment until the missing information has been received. The invoice will not be considered

SECTION 01 20 00 Page 10 April 2022 acceptable until a complete pay request package has been submitted and imports performed. Upon receipt of an acceptable invoice, the invoice is stamped 'RECEIVED'. In accordance with FAR 52.232-27 Prompt Payment for Construction Contracts, the due date for making payment is 14 days after the designated billing office receives a proper complete payment request.

-- End of Section --

SECTION 01 20 00 Page 11 April 2022

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 11 00

CLEARING, GRUBBING, AND STRIPPING

08/08

PART 1 GENERAL

1.1 SUBMITTALS

1.2 DEFINITIONS

1.2.1 Stripping

1.2.2 Clearing

1.2.3 Grubbing

1.2.4 Unsuitable Material

1.3 SURVEYS

1.4 DESCRIPTION OF WORK

1.5 ORDER OF WORK

1.6 MEASUREMENT AND PAYMENT

PART 2 PRODUCTS

PART 3 EXECUTION

3.1 SITE PREPARATION WORK PLAN

3.2 CLEARING

3.2.1 Seepage Berm Footprint

3.2.1.1 Vegetation

3.2.1.2 Miscellaneous Structures and Debris

3.2.2 Debris Removal

3.3 GRUBBING

3.3.1 Seepage Berm Footprint

3.3.2 Filling of Holes

3.4 STRIPPING

3.4.1 General

3.4.2 Description of Work

3.5 DISPOSAL REQUIREMENTS

3.5.1 Cleared and Grubbed Material

3.5.2 Stripped Materials

3.6 FIELD QUALITY CONTROL

-- End of Section Table of Contents --

SECTION 31 11 00 Page 1 April 2022

SECTION 31 11 00

CLEARING, GRUBBING, AND STRIPPING

08/08

PART 1 GENERAL

1.1 SUBMITTALS

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

SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Site Preparation Work Plan ; G, DO

SD-06 Test Reports

Surveys ; G, DO

Quality Control Documentation ; G, DO

1.2 DEFINITIONS

1.2.1 Stripping

Stripping must consist of the removal of weeds, grass, and other vegetative materials to the ground surface and the removal of surface soil to a minimum of 6 inches below existing grades. Refer to Paragraph 3.4 STRIPPING for additional restrictions and requirements.

1.2.2 Clearing

The clearing operations must consist of the complete removal of all obstructions above the ground surface. Refer to Paragraph CLEARING for additional restrictions and requirements

1.2.3 Grubbing

Grubbing must consist of the removal of all roots, buried logs, old piling, old paving, and other objectionable material as defined in these Specifications and to the limits shown on the Plans. Refer to Paragraph GRUBBING for additional restrictions and requirements

1.2.4 Unsuitable Material

Materials containing roots greater than 1/2 inches in diameter, debris, rubble, trash or other deleterious items must be classified as unsuitable material.

1.3 SURVEYS

Surveys must be performed immediately after clearing, grubbing, and stripping is complete to determine the acreage of site preparation. The Contractor must perform survey cross sections on 100 foot intervals minimum and at break points for all prepared areas.

SECTION 31 11 00 Page 2 April 2022

1.4 DESCRIPTION OF WORK

The work covered by this section consists of furnishing all labor, equipment, and materials necessary to perform the clearing and grubbing, stripping, aggregate surface removal and disposal, the removal and disposal of all cleared and grubbed materials, the hauling of stripped materials to the staging area, and the filling of all grubbing holes, as specified herein, as shown on the Plans, or as otherwise directed by the Government.

1.5 ORDER OF WORK

a. Work must be carried out within the project footprint identified in the Plans. Clearing and grubbing within temporary construction access areas is not required unless it is necessary to allow for access.

b. All clearing and grubbing work must be completed at least 300 feet in advance of seepage berm construction.

1.6 MEASUREMENT AND PAYMENT

For measurement and payment refer to Section 01 20 00 PRICE AND PAYMENT

PROCEDURES.

PART 2 PRODUCTS

Not Used.

PART 3 EXECUTION

3.1 SITE PREPARATION WORK PLAN

The Contractor must submit a Site Preparation Work Plan within 15 calendar days after notice to proceed. No work at the site, with the exception of site inspections and surveys, must be performed until the plan is approved. The Contractor must allow 10 calendar days in the schedule for the Government's review. No adjustment for time or money will be made if resubmittal of the plan is required due to deficiencies in the plan. At a minimum, the Work Plan must include:

a. Schedule of activities.

b. Method of clearing, grubbing and stripping and equipment to be used.

3.2 CLEARING

3.2.1 Seepage Berm Footprint

All trees, down timber, snags, brush, vegetation, old piling, rock, stone, concrete rubble, abandoned structures, fencing within the construction limits, vineyards, and similar debris must be cleared within the limits of work shown on the Plans.

3.2.1.1 Vegetation

Vegetation to be removed must consist of all heavy growth of brush and

SECTION 31 11 00 Page 3 April 2022 woody vegetation.

3.2.1.2 Miscellaneous Structures and Debris

The Contractor must remove abandoned foundations, debris, concrete rubble, field drain pipes, and other materials in degrade areas or in areas which will be covered with fill and as shown on the Plans.

3.2.2 Debris Removal

Remove and dispose of any debris within the construction limit shown on the Plans, or as designated for removal on the Plans or as directed by the Government.

3.3 GRUBBING

3.3.1 Seepage Berm Footprint

The entire area within the limits of work as shown on the Plans (except in restricted habitat areas) must be thoroughly grubbed. All tree roots, tap roots, and lateral roots 1/2 inches in diameter or larger, or other projections, encountered during foundation preparation must be removed.

Tree root removal must extend for a minimum distance of 3 feet outside the perimeter of the trunk and to a maximum depth of 3 feet below grade.

3.3.2 Filling of Holes

All holes caused by grubbing operations must be excavated with 1 to 1 (horizontal to vertical) side slopes. The excavations must then be backfilled with Type II Fill materials in conformance with Section 31 00 00 EARTHWORK. The backfill must be keyed into adjacent ground and placed in layers to the level of adjacent stripping operations.

3.4 STRIPPING

3.4.1 General

After inspection and review of cleared and grubbed areas, stripping may proceed.

3.4.2 Description of Work

Strip surfaces of excavations and fill foundations of heavy growth of crops, grass, weeds and other vegetation to the limits and depth as specified below. Greater depths of stripping may be necessary as specified below and as determined by the Contracting Officer.

a. Except as noted below, the entire area within the limits of work identified on the Plans must be stripped to remove crops, weeds, grass, and other vegetative materials. Stripping must be to the minimum depth of 6 inches (measured perpendicular to the levee slope or ground surface). Deeper stripping may be required in areas where concentrations of organic soils or tree roots are encountered.

b. All stockpile areas must be stripped to a minimum depth of 4 inches before material is stockpiled.

c. No stripped material must be stockpiled on existing levee slopes.

SECTION 31 11 00 Page 4 April 2022

Stripped materials must be hauled to the staging area for stockpiling for future use as top soil.

3.5 DISPOSAL REQUIREMENTS

3.5.1 Cleared and Grubbed Material

All logs, limbs, slash, and other unsuitable material which are the products of the clearing and grubbing operations must be disposed of offsite at an approved waste facility.

3.5.2 Stripped Materials

Stripped materials must be placed on the completed seepage berm as top soil provided they meet the requirements of Section 31 00 00 EARTHWORK.

3.6 FIELD QUALITY CONTROL

The Contractor must establish and maintain quality control for site preparation operations to assure compliance with Contract requirements, and maintain records of the quality control for all construction operations including but not limited to the items indicated below. These records, as well as the records of corrective actions taken, must be furnished to the Government in accordance with Section 01 45 00 QUALITY CONTROL and Section 01 45 00.15 RESIDENT MANAGEMENT SYSTEM CONTRACTOR MODE

(RMS CM).

Quality Control Documentation must include station to station limits, transverse clearing, and grubbing limits from applicable centerline;

percentage of area complete; type of material; depth of stripping;

segregation of materials; disposal and/or stockpiling of materials; and, unsuitable materials.

-- End of Section --

SECTION 31 11 00 Page 5 April 2022

3.2.2 Debris Removal

3.6 FIELD QUALITY CONTROL