165Maintenance of Temporary Erosion and Sedimentation Control Devices

and Sedimentation Control Devices

165.1General Description

This work consists of providing maintenance on temporary erosion and sediment control devices, including but not limited to the following: • Silt control gates • Temporary erosion control slope drains shown on the Plans or as directed • Temporary sediment basins • Silt control gates • Check dams • Sediment barriers • Rock filter dams • Stone filter berms • Stone filter rings • Temporary sediment traps I t also consists of removing sediment that has accumulated at the temporary erosion and sedimentation control devices. 165.1.01 Definitions General Provisions 101 through 150. 165.1.02 Related References

General Provisions 101 through 150.

General Provisions 101 through 150. 165.1.03 Submittals General Provisions 101 through 150

165.2Materials

General Provisions 101 through 150. 165.2.01 Delivery, Storage, and Handling General Provisions 101 through 150.

165.3Construction Requirements

165.3.01 Personnel General Provisions 101 through 150. 152 152 152 152 152 152 152 152 152 152

165.3.02 Equipment General Provisions 101 through 150. 165.3.03 Preparation General Provisions 101 through 150. 165.3.04 Fabrication General Provisions 101 through 150. 165.3.05 Construction As a minimum, clean sediment from all temporary erosion control devices (except temporary sediment basins) installed on the project when one-half the capacity by volume, as measured by depth, has been reached. Clean sediment from all temporary sediment basins installed on a project when one-third the capacity of the storage volume has been filled. Handle excavated sediment from any erosion or sediment control device in one of the following ways: • Remove sediment from the immediate area and immediately stabilize it to prevent the material from refilling any erosion or sediment control device. • Place and mix it in the roadway embankment or waste it in an area approved by the Engineer. Repair or replace at no cost to the Department any erosion or sediment control device that is not functioning properly or is damaged due to negligence or abuse.

Maintenance of temporary silt fence consists of furnishing all labor, tools, materials, equipment and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0 % filled). Also included is the removal of sediment accumulations (“filtercake”) on the fabric by tapping the fabric on the d ownstream side. Maintenance of silt fence also includes the removal and replacement of any deteriorated filter fabric reducing the effectiveness of the silt fence on any properly installed silt fence.

Maintenance of temporary silt control gates consists of all labor, tools, materials, equipment and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0% filled). When ap plicable, this item will include the removal of sediment accumulations on the fabric by tapping the fabric on the downstream side.

Maintenance of temporary erosion control check dams shall consist of all labor, tools, materials, equipment and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0% filled). This item also includes the removal of any material deposited in sump holes. When applicable, this item will include the removal of sediment accumulations on the fabric by tapping the fabric on the downstream side, or from the baled straw by similar means.

Maintenance of temporary silt retention barriers consists of all labor, tools, materials, equipment and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0% filled).

Maintenance of temporary sediment basins consists of all labor, tools, materials, equipment and necessary incidentals to remove and dispose of accumulated sediment down to the original bottom of the basin. This also includes removing accumulated sediment from the rock filter and restoring the rock filter to its original specified condition and any work necessary to restore all other components to the pre-maintenance conditions. 153 153 153 153 153 153 153 153 153 153

Maintenance of sediment barriers consists of furnishing all labor, tools, materials, equipment and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0 % filled). Also included is the removal of sediment accumulations on the barriers by tapping.

Maintenance of triangular silt barriers consists of all labor, tools, materials, equipment and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0% filled).

Maintenance of the retrofits device consists of all labor, tools, materials, equipment and necessary incidentals to remove and properly dispose of accumulated sediment in the permanent detention pond being utilized as a temporary sediment basin. This item also includes any maintenance that is required to ensure the retrofit device is maintained per Plan details and any maintenance of the stone filter to maintain its filtering ability, including cleaning and replacement.

Maintenance of the construction exits consists of all labor, tools, materials, equipment and incidentals, including additional stone and geotextile fabric as required to prevent the tracking or flow of soil onto public roadways. This i ncludes scarifying existing stone, cleaning existing stone, or placement of additional stone. Maintenance of the construction exit tire wash area consists of all labor, tools, materials, and equipment and incidentals. It also includes the removal and disposal of accumulated sediment in the required approved sediments torage device down to the original ground line (0% filled). Cleaning of the construction exit by scraping and/or brooming only will not be measured for payment.

Maintenance of inlet sediment traps consists of all labor, tools, materials, equipment, and necessary incidentals to remove and properly dispose of accumulated sediment in the trap and/or the excavated area adjacent to the trap. It also includes any maintenance that is required to remove sediment accumulations (“filtercake”) from the material selected to construct the inlet sediment trap.

Maintenance of rock filter dams consists of all labor, tools, materials, equipment, and necessary incidentals to r emove and dispose of accumulated sediment down to the original ground line (0% filled). This item also includes the removal of any material deposited in sump holes.

Maintenance of stone filter berms consists of all labor, tools, materials, equipment, and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0% filled). This item also includes the removal of any material deposited in sump holes.

Maintenance of stone filter rings consists of all labor, tools, materials, equipment, and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0% filled). This item also includes the removal of any material deposited in sump holes.

Maintenance of temporary sediment traps consists of all labor, tools, materials, equipment, and necessary incidentals to remove and dispose of accumulated sediment down to the original ground line (0% filled). This itemals o includes the removal of any material deposited in sump holes. 154 154 154 154 154 154 154 154 154 154

165.3.06 Quality Acceptance General Provisions 101 through 150. 165.3.07 Contractor Warranty and Maintenance General Provisions 101 through 150.

165.4Measurement

Maintenance of temporary silt fence, Type A or C, is the actual linear feet (meter) of silt fence measured in place wher e sediment is removed or where the silt fence has become undermined due to no fault or negligence of the C ontractor. Any deteriorated filter fabric reducing the effectiveness of the silt fence that needs to be removed and replaced will be measured as maintenance of temporary silt fence.

Maintenance of temporary silt control gates, Type 1, 2, or 3, as specified on the plans is measured as a single unit.

Maintenance of temporary erosion control check dams as specified on the plans is the actual linear feet (meter) of b aled straw, or rip rap, measured in place, where sediment is removed.

Maintenance of temporary silt retention barrier as specified on the plans is measured by the linear foot (meter) where sediment is removed.

Maintenance of temporary sediment basins as specified on the plans is measured as a single unit.

Maintenance of sediment barriers is the actual linear feet (meter) measured in place where sediment is removed.

Maintenance of triangular silt barrier as specified on the plans is measured by the linear foot (meter) wheres ediment is removed.

Maintenance of retrofit devices at the location specified on the plans is measured per each.

Maintenance of construction exits at the location specified on the plans, or as directed by the Engineer is measured per each. Maintenance of construction exit tire wash area, including the required approved sediment storage device, at the l ocation specified on the plans, or as directed by the Engineer are measured per each when added to an existing construction exit. Each location will be measured as either maintenance of construction exit, or maintenance of construction exit tir e was h assembly.

Maintenance of inlet sediment traps at the location specified on the plans, or as added by the Engineer is measured per each.

Maintenance of rock filter dams as specified on the plans is measured as a single unit. 155 155 155 155 155 155 155 155 155 155

Maintenance of stone filter berms as specified on the plans is measured per linear foot (meter).

Maintenance of stone filter rings as specified on the plans is measured as a single unit.

Maintenance of temporary sediment traps as specified on the plans is measured as a single unit. 165.4.01 Limits General Provisions 101 through 150.

165.5Payment

Maintenance of temporary silt fence, Type A or C, is paid for at the contract unit price bid per linear foot (meter).

Maintenance of temporary silt control gates, Type 1, 2, or 3, as specified on the plans is paid for at the contract uni t price bid per each.

Maintenance of check dams as specified on the plans is paid for at the contract unit price bid per linear foot (meter).

Maintenance of temporary silt retention barriers as specified on the plans is paid for at the contract unit price bid per linear foot (meter).

Maintenance of temporary sediment basins as specified on the plans is paid for at the contract unit price bid per each.

Maintenance of sediment barriers as specified on the plans is paid for at the contract unit price bid per linear

foot (meter).

Maintenance of triangular silt barriers as specified on the plans is paid for at the contract unit price bid per linear

foot (meter).

Maintenance of the retrofit devices at the location specified on the plans is paid for at the contract unit price bid

per each.

Maintenance of the construction exits at the location specified on the plans or as added by the Engineer is paid for

at the contract unit price per each.

Maintenance of construction exit tire wash assembly at the location specified on the plans or as added by the

Engineer is paid for at the contract unit price per each when added to an existing construction exit.

Maintenance of the inlet sediment traps at the location specified on the plans or at the location specified by the

Engineer is paid for at the contract unit price per each. 156156156156156156156156156156

Maintenance of rock filter dams as specified on the Plans is paid for at the contract unit price bid per each.

Maintenance of stone filter berms as specified on the Plans is paid for at the contract unit price bid per linear

foot (meter).

Maintenance of stone filter rings as specified on the plans is paid for at the contract unit price bid per each.

Maintenance of temporary sediment traps as specified on the plans is paid for at the contract unit price bid

per each.

Payment will be made under:

Item No. 165 Maintenance of temporary silt fence per linear foot (meter)

Item No. 165 Maintenance of silt control gates per each

Item No. 165 Maintenance of check dams per linear foot (meter)

Item No. 165 Maintenance of silt retention barriers per foot (meter)

Item No. 165 Maintenance of temporary sediment basins per each

Item No. 165 Maintenance of sediment barriers per linear foot (meter)

Item No. 165 Maintenance of triangular silt barriers per linear foot (meter)

Item No. 165 Maintenance of retrofits per each

Item No. 165 Maintenance of construction exits per each

Item No. 165 Maintenance of construction exit tire wash area per each

Item No. 165 Maintenance of inlet sediment traps per each

Item No. 165 Maintenance of rock filter dams per each

Item No. 165 Maintenance of stone filter berms per linear foot (meter)

Item No. 165 Maintenance of rock filter dams per each

Item No. 165 Maintenance of temporary sediment traps per each

165.5.01 Adjustments

General Provisions 101 through 150.. 157 157 157 157 157 157 157 157 157 157