Amend3 CLAW TSpecsPgs.pdf

Lock Approach Wall Beams Chickamauga Lock Replacement W912P5-10-B-0006 Amendment No. 0003 Hamilton County, Tennessee

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 00 00

GENERAL REQUIREMENTS

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SUBMITTALS

1.4 INSPECTIONS AND ACCEPTANCE OF WORK

1.4.1 General

1.4.2 Access to Work

1.5 FABRICATION SHOP STORAGE

1.6 STORAGE YARD

1.6.1 Site Access to Storage Yard

1.6.1.1 Marine Access

1.6.1.2 Land Access

1.6.2 Site Preparation

1.6.2.1 Fence

1.6.3 Maintenance of Storage Yard

1.7 ACCIDENT PREVENTION

1.8 SURVEY REQUIREMENTS

PART 2 PRODUCTS

2.1 FENCE AND GATE MATERIALS

2.1.1 Fence Fabric

2.1.2 Gates

2.1.3 Posts

2.1.4 Braces and Rails

2.1.5 Tension Wire

2.1.6 Concrete

2.1.7 Padlocks

PART 3 EXECUTION (Not Used)

-- End of Section Table of Contents --

SECTION 01 00 00 Page 1

SECTION 01 00 00

GENERAL REQUIREMENTS

PART 1 GENERAL

1.1 SCOPE

This section of the Specifications provides general information and requirements. The work covered by these Specifications consists of furnishing all equipment, labor, and materials required for the fabrication and delivery of precast approach wall beams as described in the contract documents. The fabricated approach wall beams, including embedded parts and inserts, are included under this contract. Handrails, grating, coverplates, brackets, skirts, restrainer bars, bearing pads, etc. will be fabricated under the follow-on lock construction contract.

1.2 REFERENCES

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

ASTM INTERNATIONAL (ASTM)

ASTM A 392 (2007) Standard Specification for Zinc-Coated Steel Chain-Link Fence Fabric

ASTM A 824 (2001; R 2007) Standard Specification for Metallic-Coated Steel Marcelled Tension Wire for Use With Chain Link Fence

ASTM C 94/C 94M (2009) Standard Specification for Ready-Mixed Concrete

ASTM F 1083 (2008) Standard Specification for Pipe, Steel, Hot-Dipped Zinc Coated (Galvanized) Welded, for Fence Structures

ASTM F 1184 (2005) Industrial and Commercial Horizontal Slide Gates

ASTM F 883 (2004) Padlocks

1.3 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-01 Preconstruction Submittals

SECTION 01 00 00 Page 2

Fabrication Shop Storage Plan; G RE

A plan describing in detail the proposed layout of fabricated items at the Contractor's plant, for which partial payments are requested, shall be submitted for approval. The plan shall be submitted within 15 calendar days after Notice to Proceed.

Initial Topographic Survey

Provide an initial topographic survey of the TVA Storage Area in Microstation DGN format.

SD-11 Closeout Submittals

Final Topographic Survey

Provide a final topographic survey of the TVA Storage Area in Microstation DGN format.

1.4 INSPECTIONS AND ACCEPTANCE OF WORK

1.4.1 General

Not withstanding other provisions of this contract, all materials and work to be performed under this contract shall be inspected and accepted by the Contracting Officer or his authorized representative(s). The Contracting Officer or his authorized representative shall be the individual(s) solely authorized to reject materials, disapprove or approve any work in progress, or order or direct any revision or change to the plans and specifications as presently shown and stated.

1.4.2 Access to Work

The Contractor shall provide safe access to the fabrication facility and any other areas where work on this contract is performed to permit inspection by the Government.

1.5 FABRICATION SHOP STORAGE

Fabricated items shall be stored in a manner to prevent permanent deflection, distortion, or other damage.

The Contractor is required to submit a fabrication shop storage plan for approval by the Contracting Officer. The plan shall include a layout of the proposed locations of all items stored at the fabrication shop, for which partial payments are requested.

1.6 STORAGE YARD

The long term storage site is located at the TVA Watts Bar Reservation in Rhea County, Tennessee. Site operations at this storage yard will impact or be impacted by other organizations. The Contractor is responsible for coordinating with others in scheduling activities in order to minimize or eliminate conflicts. The point of contact for TVA is Jim Niznik Phone:

423-751-7082. Photographs of the storage yard are provided at the back of Section 01 00 50 FORMS AND ATTACHMENTS.

SECTION 01 00 00 Page 3

1.6.1 Site Access to Storage Yard

The Contractor is advised that access restrictions will apply to both land and water based activities in the storage yard area. These restrictions are defined in the following paragraphs.

1.6.1.1 Marine Access

This site is accessible by water immediately downstream of Watts Bar Dam (Chickamauga pool), as shown in the contract drawings. The use or construction of other marine access locations near the storage yard area require the necessary environmental clearances and must be approved by TVA and the Contracting Officer. It is likely that permission to use an alternate marine access location will depend, at least partially, on an environmental assessment as described in Section 01 57 20 ENVIRONMENTAL PROTECTION of these Specifications.

1.6.1.2 Land Access

Land access to the TVA storage yard is accessible from US Highway 27, off Highway 68. The site is on the right bank immediately downstream of Watts Bar Lock and Dam. Use of any TVA lands outside the designated area requires approval from the Contracting Officer and TVA. In addition, the Contractor shall adhere to all load restrictions and speed limits on public roads when hauling material to the storage yard.

1.6.2 Site Preparation

The Contractor is required to complete preparation of the storage yard, as specified herein, in Section 03 41 35 LONG-TERM STORAGE OF PRECAST CONCRETE BEAMS, and as shown in the Contract Drawings, within 12 months after Notice to Proceed.

1.6.2.1 Fence

There is approximately 2,100 linear feet of fence to be constructed, as shown in the drawings. The new fence shall be a 7-ft height chain-linked fence and will enclose the 5 acre site. Two 30 ft roller gates (each with two 15 ft sections) shall be constructed at the locations recommended by the Contractor and approved by the Contracting Officer. A padlock shall be provided for each gate with 4 sets of keys for each padlock. The Contractor shall submit fence layout drawings, detailing the proposed fence installation, as part of the site development plan required in Section

03 41 35 LONG-TERM STORAGE OF PRECAST CONCRETE BEAMS.

1.6.3 Maintenance of Storage Yard

The Contractor is responsible for maintaining the storage yard.

Maintenance of the storage yard includes:

a. Control of vegetation.

b. Restoring low areas of stone base to original grade.

c. Rearranging stored fabrications, as necesary, to maintain proper storage.

The Contractor shall maintain the storage yard throughout the contract period until delivery and acceptance of all components.

SECTION 01 00 00 Page 4

1.7 ACCIDENT PREVENTION

Accident prevention requirements that are applicable to this project during site operations are stated in Section 01 35 26 GOVERNMENTAL SAFETY REQUIREMENTS. Site operations include TVA storage yard preparation, delivery and unloading to the TVA storage yard.

1.8 SURVEY REQUIREMENTS

The Contractor is responsible for performing all field surveys required before, during, and after development of the storage site at Watts Bar. No separate payment will be made for field surveys including baseline surveys, initial surveys, in-progress surveys, and final as-built surveys. All costs associated with field surveys shall be considered incidental to the costs of excavation and fill placement.

All surveys shall be certified by a land surveyor with current State registration. Prior to performing any work under this Section, coordinate all operations with the Government's on-site representative so that surveys will be made at the appropriate time. The Contractor shall notify the Contracting Officer not less than five working days in advance of each survey. All surveys shall be conducted in the presence of the Contracting Officer or his designated representative unless this requirement is waived by the Contracting Officer. In the event of unavailability of the Contracting Officer, the Contractor shall perform the survey and certify to the Contracting Officer that it complies with the specifications.

Cross-sections for all surveys shall be no more than 50 feet apart as measured along an established baseline, with the readings at 5-foot intervals and at breaks in the grade along the line, unless otherwise specified.

The Contractor shall provide, to the Government, a copy of the initial topographic survey and final topographic survey in Microstation DGN format.

PART 2 PRODUCTS

2.1 FENCE AND GATE MATERIALS

2.1.1 Fence Fabric

Fence fabric for the 7-foot-high fence shall conform to ASTM A 392, Class 1, zinc-coated steel wire with minimum coating weight of 1.2 ounces of zinc per square foot of coated surface. Fabric shall be fabricated of 9 gauge wire woven in 2 inch mesh. Fabric shall be twisted and barbed on the top selvage and knuckled on the bottom selvage.

2.1.2 Gates

ASTM F 1184. Gate shall be the Type II, Class 1. Gate frames shall conform to strength and coating requirements of ASTM F 1083 for Group IA, steel pipe, with external coating Type A, nominal pipe size (NPS) 1-1/2.

Gate fabric shall be as specified for chain link fabric. Gate leaves shall have either intermediate members and diagonal truss rods or shall have tubular members as necessary to provide rigid construction, free from sag or twist. Gate fabric shall be attached to the gate frame by method standard with the manufacturer except that welding will not be permitted.

Latches, hinges, stops, keepers, rollers, and other hardware items shall be furnished as required for the operation of the gate. Latches shall be

SECTION 01 00 00 Page 5 arranged for padlocking so that the padlock will be accessible from both sides of the gate. Stops shall be provided for holding the gates in the open position.

2.1.3 Posts

ASTM F 1083, zinc-coated. Group IA, with external coating Type A steel pipe. Line posts and terminal (corner, gate, and pull) posts selected shall be of the same designation throughout the fence. Gate post shall be for the gate type specified subject to the limitation specified in

ASTM F 1184.

2.1.4 Braces and Rails

ASTM F 1083, zinc-coated, Group IA, steel pipe, size NPS 1-1/4.

2.1.5 Tension Wire

Tension wire shall be Type I or Type II, Class 2 coating, in accordance with ASTM A 824.

2.1.6 Concrete

ASTM C 94/C 94M, using 3/4 inch maximum size aggregate, and having minimum compressive strength of 3000 psi at 28 days. Grout shall consist of one part portland cement to three parts clean, well-graded sand and the minimum amount of water to produce a workable mix.

2.1.7 Padlocks

Padlocks shall conform to ASTM F 883, Type, Size 1-3/4 inch.

PART 3 EXECUTION (Not Used)

-- End of Section --

SECTION 01 00 00 Page 6

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SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 22 00

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 LUMP SUM PAYMENT ITEMS

1.1.1 Mobilization and Preparatory work.

1.1.2 Precast Concrete Beams

1.1.2.1 Precast Concrete Beams (Alternative 1)

1.1.2.2 Precast Concrete Beams (Alternative 2)

1.1.3 Supply Delivery to Storage Yard

1.1.4 Power Line Relocation

1.1.5 Performance and Payment Bond

1.1.6 Soil Borings

1.2 UNIT PRICE PAYMENT ITEMS

1.2.1 Common Excavation at Storage Yard

1.2.2 Filter Fabric

1.2.3 DGA Stone at TVA Storage Area

1.2.4 Shotrock Fill

1.2.5 Unsuitable Material Removal

1.2.6 Suitable Material Placement

1.3 FABRICATED ITEMS PAYMENT SCHEDULE

PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION (Not Applicable)

SECTION 01 22 00 Page 1

SECTION 01 22 00

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 LUMP SUM PAYMENT ITEMS

Payment items for the work of this contract for which contract lump sum payments will be made are listed in the BIDDING SCHEDULE and described in the paragraphs below. All costs for items of work, which are not specifically mentioned to be included in a particular lump sum or unit price payment item, shall be included in the listed lump sum item most closely associated with the work involved. The lump sum 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, environmental protection, 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 Preparatory work.

Payment for mobilization and preparatory work will be made at the contract lump sum price for "Mobilization and Preparatory Work" in accordance with Contract Clause 252.236-7003, PAYMENT FOR MOBILIZATION AND PREPARATORY WORK. This item will consider all costs associated with TVA storage yard site preparation, except for the stone base, removal of topsoil, and relocation of existing power poles, as specified in Section 01 00 00 GENERAL REQUIREMENTS, and includes full compensation for furnishing all materials, equipment, and labor required to prepare the storage yard for long term storage of all fabrications and related appurtenances.

1.1.2 Precast Concrete Beams

The Contractor shall submit his bid based on his assumed construction methods and will bid either Alternative 1 or Alternative 2, as described below. The final product, whether it is cast in one, two, or three segments shall meet all the provisions and tolerances set forth in the contract documents.

1.1.2.1 Precast Concrete Beams (Alternative 1)

Payment will be made for costs associated with fabricating the 42 precast beams in one piece each, which includes full compensation for fabrication and testing of complete beams, as shown in the contract drawings and specified in Section 03 41 34 PRECAST CONCRETE BEAMS FOR APPROACH WALLS.

Payment for this work will be made at the contract lump sum price for " Alternative 1 - Precast Beams Complete."

1.1.2.2 Precast Concrete Beams (Alternative 2)

Payment will be made for costs associated with fabricating the 42 precast beams in segments, which includes full compensation for fabrication and testing of complete beams, as shown in the contract drawings and specified in Section 03 41 34 PRECAST CONCRETE BEAMS FOR APPROACH WALLS. Payment for

SECTION 01 22 00 Page 2 this work will be made at the contract lump sum price for "Alternative 2 - Precast Beams in Segments."

Deviation from the contract documents to break the beams into segments prior to post-tensioning has been authorized, but will require redesign and approval by the Government. If the Contractor opts to build the beam in segments, then all costs associated with the redesign of the beams are at the Contractor's expense and shall be included in this bid item.

1.1.3 Supply Delivery to Storage Yard

Payment will be made for costs associated with delivery to storage yard at the contract lump sum price for "Supply Delivery to Storage Yard", which includes full compensation for furnishing all materials, equipment, and labor required to deliver the precast beams and all related appurtenances to the storage yard; as specified in Section 01 00 00 GENERAL REQUIREMENTS and Section 03 41 35 LONG-TERM STORAGE OF PRECAST CONCRETE BEAMS.

1.1.4 Power Line Relocation

Payment will be made for costs associated with relocation of powerline at the storage yard at the contract lump sum price for "Power Line Relocation". This price includes full compensation for furnishing all materials, equipment, and labor required to satisfactorily relocate the power line at the TVA storage yard, as specified in Section 03 41 35

LONG-TERM STORAGE OF PRECAST CONCRETE BEAMS.

1.1.5 Performance and Payment Bond

Premiums for performance and payment bonds for shall be included in the contract lump sum price for "Reimbursement of Actual Performance and Payment Bonds." Payment made under this provision shall not exceed the actual amount paid for premiums for performance and payment bonds, which payment shall take into consideration any discounts or rebates to the Contractor from the Surety.

1.1.6 Soil Borings

Payment will be made for costs associated with performing soil borings at the storage yard at the contract lump sum price for "Soil Borings". This price includes full compensation for furnishing all materials, equipment, and labor required to satisfactorily perform soil borings at the TVA storage yard, as specified in Section 03 41 35 LONG-TERM STORAGE OF PRECAST

CONCRETE BEAMS.

1.2 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 shall constitute 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.

1.2.1 Common Excavation at Storage Yard

Payment will be made for costs associated with removal of top soil, as

SECTION 01 22 00 Page 3 specified in the contract, at the contract unit price per cubic yard for "Common Excavation at Storage Yard". This price includes full compensation for furnishing all materials, equipment, and labor required to remove topsoil, as specified in Section 03 41 35 LONG-TERM STORAGE OF PRECAST

CONCRETE BEAMS.

1.2.2 Filter Fabric

Installed geotextile material will be measured for payment in place to the nearest square yard of protected area as specified in Section 03 41 35 LONG-TERM STORAGE OF PRECAST CONCRETE BEAMS. Payment will be made at the contract unit price per square yard for "Filter Fabric", and shall constitute full compensation for providing all plant, labor, material, and equipment and performing all operations necessary for the complete and satisfactory installation of the geotextile. No additional payment will be made for material and associated equipment and operation used in laps, seams, anchorage, or extra length; or securing pins. No payment will be made for geotextiles replaced because of waste, contamination, damage, repair, or due to Contractor fault or negligence.

1.2.3 DGA Stone at TVA Storage Area

Payment will be made for costs associated with placement of stone at the storage yard at the contract unit price per ton for "DGA Stone at TVA Storage Area". This price includes full compensation for furnishing all materials, equipment, and labor required to satisfactorily place DGA stone at the TVA storage yard, as specified in Section 03 41 35 LONG-TERM STORAGE

OF PRECAST CONCRETE BEAMS.

1.2.4 Shotrock Fill

Payment will be made for costs associated with placement of shotrock fill at the storage yard at the contract unit price per ton for "Shotrock Fill". This price includes full compensation for furnishing all material, equipment, and labor required to satisfactorily perform shotrock fill at the TVA storage yard, as specified in Section 03 41 35 LONG-TERM STORAGE OF

PRECAST CONCRETE BEAMS.

1.2.5 Unsuitable Material Removal

Payment will be made for costs associated with removal of unsuitable material, as specified in the contract, at the contract unit price per cubic yard for "Unsuitable Material Removal". This price includes full compensation for furnishing all materials, equipment, and labor required to remove the unsuitable material, as specified in Section 03 41 35 LONG-TERM

STORAGE OF PRECAST CONCRETE BEAMS.

1.2.6 Suitable Material Placement

Payment will be made for costs associated with placement of suitable material at the contract unit price per cubic yard for "Suitable Material Placement". This price includes full compensation for furnishing all materials, equipment, and labor required to place and compact suitable material to replace removed unsuitable material.

1.3 FABRICATED ITEMS PAYMENT SCHEDULE

Fabricated items stored at the Contractor's shop will considered for payment as provided in Contract Clauses 52.232-1 PAYMENTS and 52.232.16

SECTION 01 22 00 Page 4

PROGRESS PAYMENTS, and as follows:

a. All payments would follow inspection and approval by the Contracting Officer.

b. The Contractor shall present paid or receipted invoices or invoices with cancelled checks showing title to the items of the Prime Contractor.

c. The Contractor shall establish a storage system at his shop that segregates, labels, and protects all items for which payment is made under this contract.

d. Partial payment for delivery may be considered after satisfactory delivery, and storage at the storage site.

PART 2 PRODUCTS (Not Applicable)

PART 3 EXECUTION (Not Applicable)

SECTION 01 22 00 Page 5

SECTION TABLE OF CONTENTS

DIVISION 03 - CONCRETE

SECTION 03 41 35

LONG-TERM STORAGE OF PRECAST CONCRETE BEAMS

PART 1 GENERAL

1.1 SCOPE

1.2 REFERENCES

1.3 SUBMITTALS

PART 2 PRODUCTS

2.1 Geotextile

2.2 Dense Graded Aggregate

PART 3 EXECUTION

3.1 DELIVERY AND STORAGE

3.1.1 Site Preparation

3.1.2 Delivery of Fabrications

3.1.3 Transportation

3.1.4 Lifting Devices

3.1.5 Lifting, Handling, and Transporting

3.1.6 Beam Inspection

3.2 LONG-TERM STORAGE

3.3 SEEDING

SECTION 03 41 35 Page 1

SECTION 03 41 35

LONG-TERM STORAGE OF PRECAST CONCRETE BEAMS

PART 1 GENERAL

1.1 SCOPE

The work covered by this section consists of furnishing all plant, labor, equipment, and materials and performing all operations to ship and store the precast concrete beams to the final storage area, as specified herein and shown on the drawings. The work specified herein shall be coordinated with the procedures and sequence of construction shown on the drawings.

1.2 REFERENCES

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

TENNESSEE DEPARTMENT OF TRANSPORTATION (TDOT)

TDOT Std Specs (2006) Standard Specifications for Road and Bridge Construction, including subsequent Supplementals to date

1.3 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-01 Preconstruction Submittals

Storage Site Preparation Plan; G

The Contractor shall submit a plan describing in detail the proposed layout of the Government provided site for long-term storage of fabricated beams. The drawing shall clearly identify the location of each beam at the long-term storage area. All beams shall be properly labeled for easy reference. The beams shall be stenciled with the beam ID number shown on the contract drawings. A final site plan, in Microstation format, shall be provided as part of the as-built drawings required in Section

01 78 02 AS-BUILT DRAWINGS.

Transportation Plan; G RE

A plan describing in detail the proposed delivery methods of the beams shall be submitted for approval. The plan shall be submitted at least 60 calendar days prior to the proposed delivery of any item. The Contractor must demonstrate in his plan that the actions he plans to take (stone base, crane mats, etc.) will not damage the existing drainage structures from the power plant. The

SECTION 03 41 35 Page 2

Contractor shall show that the plan distributes wheel loads so that increased ground pressures do not affect drainage structures.

SD-02 Shop Drawings

Lifting, Handling, and Transporting; G

Detail drawings shall indicate the type of equipment that will be used to transport the beams from the precast yard to the long-term storage area. The drawings shall clearly identify the shipment route, how to secure the beams during shipment, and the order of beams during shipment. Beams shall be stored to allow access to each beam type as shown on the drawings. Each type shall be accessible for removal and shipment without relocation by the future lock construction contractor.

SD-03 Product Data

Material and Equipment

A list of materials and equipment for lifting and transporting, except Contractor's equipment, which is used for shipment of the beams shall be submitted. These items shall become Government property and will be used for future shipments of the beams.

SD-05 Design Data

Long-term Storage Site Area; G

Long-term storage site area layout, design, and calculations shall be submitted for Government approval 60 days before initiating site preparation. No site preparation work shall be started prior to approval of this submittal. The design and drawings shall be prepared by a Registered Engineer. The proposed storage area is as shown on the contract drawings. All anticipated loads which effect the beams during storage period shall be considered. Stacking of beams is not allowed. Relative settlement at each end of the beams during storage shall not be more than 6 inches and even settlement at both ends shall not be more than 12 inches.

SD-11 Closeout Submittals

Final Drawing(s) of Long-Term Storage Site; G

Within 14 days of delivering the last precast beam; the Contractor shall submit final drawings of the long-term storage site showing location of all beams by beam identification number;

delivery receipts of all precast units; conditions the precast beams were left in and their protection; final beam weights;

include photographs of each beam.

PART 2 PRODUCTS

2.1 Geotextile

Geotextile fabric used in site preparation shall conform to TDOT Std Specs Subsection 918.27 Geotextile Material, Type IV.

SECTION 03 41 35 Page 3

2.2 Dense Graded Aggregate

DGA used in site preparation shall conform to TDOT Std Specs Subsection

903.05 Aggregate for Mineral Aggregate Base and Surface Courses, Type B Aggregate with a Grading C blend mix.

PART 3 EXECUTION

3.1 DELIVERY AND STORAGE

3.1.1 Site Preparation

A minimum of 3 soil borings shall be drilled across the site extending a minimum of 10 feet to characterize the material and assure that soil and fill fully support beam loads as specified. The laydown site shall be prepared by removing 12 inches of existing material or to a depth directed by the Contracting Officer, and replaced with 12 inches of shotrock fill (with particle sizes ranging from fines to a maximum size of 12 inches) placed atop a geotextile fabric. Placement of shotrock material shall be such to minimize voids and segregation between varying particle sizes. The shotrock is to be capped with another layer of thick filter fabric and a minimum of 12 inches of dense graded aggregate (DGA) compacted to accommodate the equipment used to transport the precast beams. Placement of this layer of geotextile and DGA material will not be allowed until the Contracting Officer approves the final placement of all shotrock material.

Care should be given to minimize damage to the filter fabric while filling and compacting with 12 inches of DGA to a smooth level surface to accommodate the beams while supporting positive drainage away from the site. Pile foundations will not be allowed. Unsuitable material is any material determined by the Contracting Officer that contains shale, weathered rock, organic or non soil like materials, and debris. Suitable material for replacement in areas where needed is defined as shotrock fill placed to the lines and grades needed to support site development and to the satisfaction of the Contracting Officer. All material removed from the site shall be disposed on TVA property at a location directed by the Contracting Officer. Material shall be stockpiled in stable condition and seeded to promote vegetative growth. Topsoil stripped from the laydown area shall also be stockpiled and seeded in the disposal area and left in a location that can easily be removed for future use. Material will be stockpiled within one mile in the Watts Bar reservation. No clearing is anticipated, but environmental requirements for seeding and silt fencing are required. The disposal site shall be prepared with all erosion control measures similarly as required for the site laydown area.

Precast beams shall be stored on level surfaces which shall have sufficient strength to prevent settlement and overturning of the beams. It is the Contractor's responsibility to ensure settlement does not exceed the requirements previously stated above. Bearing pads are to be provided if the beams are supported on concrete or steel. The precast beams shall be stored in free-draining areas and not adjacent to, or in contact with the earth. The precast beam shall rest only at both ends on a smooth surface, which shall not deteriorate and shall be free from corrosion.

The existing power line will be relocated outside the defined storage site on the riverward side, as shown on the drawings, to assure adequate overhead clearance for safe delivery and removal of beams at the site.

This entails the relocation of at least one pole and approximately 630 feet of power line and should be included in the site plan for approval. Care must be taken to avoid any impact to the existing sewer leach field, SECTION 03 41 35 Page 4 drainage inlet, or TVA storage area. The POC's for coordination of the powerline relocation is as follows:

TVA POC - Mr. Jim Niznik Phone: (423) 751-7082

Utility POC - Melvin Flowers Volunteer Energy Cooperative 425 Wassom Memorial Hwy Spring City, TN 37381 Phone: 423-476-6571 (ext 7543)

3.1.2 Delivery of Fabrications

The Contractor is required to submit a transportation plan for approval by the Contracting Officer. The plan shall describe in detail the proposed methods of delivery of the fabricated items. The plan shall address equipment, machinery and site limitations identified in the specifications and discussed at a pre-delivery meeting between the Contractor and the Contracting Officer. The plan shall be submitted at least 60 calendar days prior to proposed delivery of any item. The plan shall include, but not be limited to the following:

a. Type and size of barge(s) to be used for delivery.

b. Propelling unit to be used for delivery.

c. Location and description of intermediate assembly or handling areas (if any) between the fabrication location and the delivery location.

d. Cranes and other lifting and positioning equipment to be used.

e. Packaging of components.

f. Blocking.

3.1.3 Transportation

When transporting precast beams by truck, railroad car, or barge, provisions shall be made for supporting the members with adequate bracing to ensure their maintaining the proper position and dampening of dangerous vibrations. Adequate padding material shall be provided between tie chains or cables to preclude chipping of concrete.

3.1.4 Lifting Devices

After all the beams have been placed at the final long-term storage location, the lifting devices shall be delivered to the Government Representative. The lifting devices shall be in good working condition.

Any defect shall be corrected by the Contractor to the Government Representative's satisfaction.

3.1.5 Lifting, Handling, and Transporting

The beams shall be lifted using the two lifting locations. The crane lifting angle shall not be less than 80 degrees from the horizontal line, as shown on the contract drawings. Lateral deflection and vibrations during transportation shall be prevented by adequate securing of the beams.

SECTION 03 41 35 Page 5

3.1.6 Beam Inspection

All beams shall be inspected after they have been unloaded and also after being placed at the final storage location by the Government Representative. All surface defects shall be repaired according to Section 03 41 34 PRECAST CONCRETE BEAMS FOR APPROACH WALLS, paragraph 3.5 FINISHING. Any beam which is damaged and is beyond repair will be rejected and shall be replaced at no cost to the Government.

3.2 LONG-TERM STORAGE

Contractor shall determine and provide all equipment needed to deliver the beams successfully to the final storage area. The Government Representative shall be notified at least 14 days prior to the beams arrival at the site. It is assumed that the beams will be stored for a period of not less than 5 years.

Materials and equipment delivered to the storage site shall be unloaded and stored by the Contractor. The Contractor shall verify the condition and quantity of the items delivered and acknowledge receipt and condition thereof in writing to the Government Representative. All delivered items will be inspected by the Government Representative. If delivered items are damaged or a shortage is determined, the Contractor will be notified of such in writing within 24 hours after delivery. All items shall be stored completely blocked-up off the ground or pavement in a manner that will provide fairly even support to the end posts in order to prevent warping out of plane. Stacking materials directly on top of each other is not allowed. Relative maximum settlement for each end of the beam shall not be more than 6 inches and even settlement at both ends shall not be more than 12 inches.

All the facilities which the Contractor provided for delivery of the beams to the final storage place, except the Contractor's equipment, shall remain as Government property and shall be in good condition for future use.

Beams shall rest on temporary bearings, which shall last 5 years or more.

The Contractor shall ensure that all beams are accessible for removal from the storage area without double handling and at any time. Each beam shall be clearly identified and stored as shown on approved shop drawings.

3.3 SEEDING

Seed shall be uniformly mixed and shipped to the job site in bags fully labeled stating the seed mixture, name and address of the supplier, net weight and contents. All seed shall be a minimum of 95 percent pure with a minimum germination of 65 percent. No seed shall contain more than five percent weed seeds by weight. No seed shall contain more than 18 noxious weed seeds or bulblets per ounce. At the discretion of the Contracting Officer, samples of seed may be taken for compliance with these specifications.

Seed shall be applied to disturbed areas and topsoil stockpiles at the rates shown below:

Winter Seed Mix Rate Seeding Dates

Winter Oats 15 lbs./acre 1 Dec - 15 Feb Annual Rye 5 lbs./acre

SECTION 03 41 35 Page 6

Summer Seed Mix Rate Seeding Dates

German Millett 40 lbs/acre 15 May - 1 Aug Sudan grass 40 lbs/acre

SECTION 03 41 35 Page 7