31 11 00.08.pdf

FY21 Sediment Removal and Concrete Repairs

SECTION TABLE OF CONTENTS

DIVISION 31 - EARTHWORK

SECTION 31 11 00.08

MISCELLANEOUS SITE CLEANING

PART 1 GENERAL

1.1 REFERENCES

1.2 GENERAL REQUIREMENTS

1.2.1 Marking Limits of Work

1.3 SUBMITTALS

1.4 SCHEDULING WORK

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Herbicide for Cut Surface and Basal Bark Treatment

PART 3 EXECUTION

3.1 CLEARING AND DEBRIS REMOVAL

3.2 CLEANING JOINTS AND WEEPHOLES

3.3 DISPOSAL

3.4 HERBICIDE APPLICATION

3.4.1 General

3.4.2 Treatment of Stumps and Woody Growth in Joints, Cracks, and

Weepholes

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SECTION 31 11 00.08 Page 1 Certified Final Documents - RTA W911WN21B8001 - Amendment 1

SECTION 31 11 00.08

MISCELLANEOUS SITE CLEANING

PART 1 GENERAL

1.1 REFERENCES

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

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 (2014) Safety and Health Requirements Manual

1.2 GENERAL REQUIREMENTS

Miscellaneous site cleaning shall consist of:

1. Removal and disposal of all trees, brush, roots, and debris within sediment deposits unpaved channel bottom , and removal and disposal of all trees ,grass, and brush from the weepholes , and monolith joints concrete joints, and cracks within concrete lined banks. .

2. Within the contractor work limits specified, shown on the drawings, or as directed by the Contracting Officer or designated representative, roots vegetation up to 1/2-inch diameter to be removed.

3. Removal of roots will not be required in areas outside of the concrete lined banks. Trees and brush outside the concrete lined banks, but within the contractor work limits are to cut/trimmed flush with the existing surface and have stumps treated with herbicide as specified.

1.2.1 Marking Limits of Work

The limits of clearing and cleaning of joints and weepholes are shown on Contract Drawings. Prior to commencing the clearing work, the Contractor shall mark the limits of clearing by staking at 50-foot intervals and at corners of the areas. Prior to cleaning weepholes, the Contractor shall paint a line next to each section of joint and dot beside each weephole to be cleaned. No clearing or cleaning shall be performed prior to acceptance of the marking by the Contracting Officer or designated representative.

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. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Work Plan; G, RO

SECTION 31 11 00.08 Page 2

The Contractor shall submit the proposed methods to be used to perform the clearing and disposal to the Contracting Officer or designated representative for approval. The plan shall include the sequence of operations, methods and equipment to be used to cut, haul, and dispose of the materials as specified and as shown. The work plan shall be submitted at least 30 calendar days prior to the commencement of any clearing. The Contractor's proposed methods for cleaning weepholes shall be submitted to the Contracting Officer or designated representative for approval prior to commencing the work.

SD-03 Product Data

Manufacturer's Data; G , RO

Manufacturer's Data shall be submitted for the herbicides to be used. The data shall include specifications, recommended uses, and application instructions.

1.4 SCHEDULING WORK

Except where the clearing and or weephole cleaning is required for performance of other work under this contract or is incidental to the performance of other work, clearing and weephole cleaning may be scheduled at any time during the contract period, however, any regrowth occurring prior to completion and acceptance of the work under this contract shall be removed at no additional cost to the Government. Upon completion of all work under this contract, no vegetation shall be present in areas specified to be cleared which exceeds 8 inches in height. It may be necessary to perform additional clearing operations before final acceptance in order to remove vegetation which has regrown since the initial clearing.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Herbicide for Cut Surface and Basal Bark Treatment

Herbicide for treatment of stumps remaining after clearing operations and for basal bark treatment of woody growth in the joints , cracks, and weepholes shall be a commercial product formulated for cut surface treatment of woody growth. The herbicide utilized shall be a glyphosate that is labeled for use near water bodies; use of this product reduces the risk to aquatic species.

PART 3 EXECUTION

3.1 CLEARING AND DEBRIS REMOVAL

Clearing shall consist of the removal and disposal of trees, brush, grass, weeds, and debris occurring in the channel bottom , and on the side slopes of the concrete slope lining banks, and between the top of the concrete slope lining and contractor work limits, and banks as shown on the drawings. All trees, brush and other vegetation growing within the limits specified or shown on the drawings shall be removed. Roots shall be removed from the channel bottom unless removal would result in damage to the concrete slope lining or rock channel bottom. Trees and brush in the joints , cracks, and weepholes of the concrete slope lining shall be cut off as close as possible to the surface

SECTION 31 11 00.08 Page 3 of the concrete and treated with herbicide as specified in paragraph HERBICIDE APPLICATION, subparagraph TREATMENT OF STUMPS AND WOODY GROWTH IN WEEPHOLES. Debris, including down trees, on the concrete slope lining within the limits of clearing shall be removed. The remaining stumps shall be treated as specified in paragraph HERBICIDE APPLICATION, subparagraph TREATMENT OF STUMPS AND WOODY GROWTH IN JOINTS AND WEEPHOLES. The Contractor shall clear the areas and remove debris in any manner he chooses which does not damage existing structures or the channel protection project. All cleared material shall be removed from the site;

raking or other methods shall be utilized as necessary to remove all cuttings and slashings. Removal of cleared material shall follow closely after clearing operations to minimize the possibility of material being washed into the river by high water. No cuttings or piles of cuttings shall remain in the channel overnight. Floating of cleared materials in the river for removal at a downstream location will not be permitted. Care shall be exercised when equipment is operated adjacent to the concrete slope lining and existing structures so as not to damage the concrete slope lining or structure in any way. All damages caused by the Contractor's operations shall be repaired at the Contractor's expense.

3.2 CLEANING JOINTS AND WEEPHOLES

Cleaning joints and weepholes shall consist of removing all vegetation from joints weepholes in the concrete slope lining at the locations and to the limits indicated on the drawings. The Contractor is alerted to the presence of trees and other vegetation in some joints and weepholes. The joints and weepholes shall be cleaned by methods which do not damage the surrounding concrete or drainage pipes. Small trees and other vegetation, including root systems, shall be removed to the maximum extent possible without damaging the slope lining or drainage system. Care shall be taken to ensure that material is not "pushed into" the weepholes so as not to damage or block the longitudinal drain pipes. Woody growth with a diameter greater than 1/2-inch, but which cannot be pulled out, shall be cut as close to the surface of the concrete lining as possible and treated with herbicide, according to manufacturer's instructions, as specified in paragraph HERBICIDE APPLICATION, subparagraph TREATMENT OF STUMPS AND WOODY GROWTH IN JOINTS AND WEEPHOLES. Care shall be exercised when equipment is operated adjacent to the concrete slope lining and existing structures so as not to damage the concrete slope lining or structure in any way. All damages caused by the Contractor's operations shall be repaired by him at the Contractor's expense.

3.3 DISPOSAL

Cleared material and debris shall be disposed of in accordance with an approved Section 01 74 19.00 08 CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT. In no event will disposal be permitted on lands where the material would be subject to flooding or subsequent transportation to the stream or other water courses.

3.4 HERBICIDE APPLICATION

3.4.1 General

The herbicides shall be handled and applied in strict accordance with the manufacturer. The herbicide shall be applied by applicators licensed by the Commonwealth of Pennsylvania to perform spray applications. All

SECTION 31 11 00.08 Page 4 herbicide application shall be in accordance with EM 385-1-1 and Federal, State and local regulations. Care shall be exercised to avoid runoff of herbicide, and no herbicide shall be permitted to enter the stream. The Contractor shall provide adequate safety equipment to be used during the application of herbicides.

3.4.2 Treatment of Stumps and Woody Growth in Joints , Cracks, and Weepholes

Herbicide treatment for woody brush and trees shall be applied in accordance with manufacturer's specification. The herbicide utilized shall be a glyphosate that is labeled for use near water bodies; use of this product reduces the risk to aquatic species. Additionally, methods that reduce drift during application of the herbicide shall be specified, including but not limited to avoiding spraying when wind velocity is greater than 5 mph and using low pressure and large orifice nozzles.

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