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FY21 Sediment Removal and Concrete Repairs

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

1.1.1 Project Description

1.1.2 Location

1.2 EXISTING WORK

PART 2 PRODUCTS

PART 3 EXECUTION

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SECTION 01 11 00 Page 1 Certified Final Documents - RTA W911WN21B8001 - Amendment 1

SECTION 01 11 00

SUMMARY OF WORK

PART 1 GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

1.1.1 Project Description

The work is located within Units No. 5 and No. 6 of the City of Johnstown, Cambria County, Pennsylvania, Local Flood Protection Project (LFPP) along the right and left banks of the Stonycreek River. The work area consists concrete lining along the right and left banks with an unpaved channel bottom. Access into the channel will be accomplished by existing concrete-paved ramps. The removal of the sediment within the channel is an effort to restore the channel dimensions back to as-built conditions. The removal of the sediment will occur within the areas of USACE responsibility from approximate Station 35+00 to 111+25. The general description of the work is to furnish all material, equipment, labor, layout of work, and supervision and perform the following work:

Contract, as shown on contract drawings:

a. Perform all routine surveying operations related to the work, using existing horizontal and vertical controls, to demonstrate quantities removed from project.

b. Perform sediment characterization to include sampling, laboratory analysis, and reporting. This work shall be completed prior to disposal of sediment.

c. Install erosion and sediment control Best Management Practices (BMPs).

d. Remove and dispose of vegetation and root systems from the sediment deposit unpaved channel bottom , as shown on the contract drawings. Vegetation is comprised of mature trees, b r ush es , and grasses.

e. Remove and dispose of vegetation from the weepholes , and expansion joints , and cracks within the left and right banks concrete lining, adjacent to the sediment deposit , as shown in the contracting drawings.

Vegetation is comprised of mature trees, b r ush es , and grasses. Use appropriate methods, as described herein, such as basal bark treatment, to completely remove vegetation from the weepholes , cracks, and joints. Application of herbicide shall be limited to products which reduce risk to aquatic species.

f. Prepare sections of joints in the concrete lining which vegetation was removed by using appropriate methods, as directed herein, and install new joint sealant, including the backer rod, bond breaker, and polyurethane based sealant.

g. Excavate, remove, and dispose sediment along the left and right banks, SECTION 01 11 00 Page 2 as shown in the contract drawings.

1.1.2 Location

The work is located in the City of Johnstown, Cambria County, Pennsylvania and is within the Johnstown Local Flood Protection Project of Stonycreek River.

1.2 EXISTING WORK

In addition to FAR 52.236-9 Protection of Existing Vegetation, Structures, Equipment, Utilities, and Improvements:

a. Remove or alter existing work in such a manner as to prevent injury or damage to any portions of the existing work which remain.

b. Repair or replace portions of existing work which have been altered during construction operations to match existing or adjoining work, as approved by the Contracting Officer or designated representative. At the completion of operations, existing work must be in a condition equal to or better than that which existed before new work started.

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

Not used.

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SECTION 01 11 00 Page 3

1.2 EXISTING WORK