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 A.Standard Specifications General Provisions 101 through 150. B.Referenced Documents 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. A.Temporary Silt Fence 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). Alsoincluded is the removal of sediment accumulations (“filtercake”) on the fabric by tapping the fabric on the d ownstream side. Ma intenance 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. B.Silt Control Gates Maintenance of temporary silt control g ates 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). W hen ap plicable, this item will include the removal of sediment accumulations on the fabric by tapping the fabric on the downstream side. C.Check Dams (all types) Maintenance of temporary erosion c ontrol c heck d ams 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 willinclude the removal of sediment accumulations on the fabric by tapping the fabric on the downstream side, orfrom the baled straw by similar means. D.Silt Retention Barriers Maintenance of temporary silt retention b arriers 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). E.Temporary Sediment Basins Maintenance of temporary sediment b asins 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 alsoincludes removing accumulated sediment from the rock filter and restoring the rock filter to its original specifiedcondition and any work necessary to restore all other components to the pre-maintenance conditions. 153 153 153 153 153 153 153 153 153 153
F.Sediment Barriers 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). Alsoincluded is the removal of sediment accumulations on the barriers by tapping. G.Triangular Silt Barriers Maintenance of triangular silt b arriers 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). H.Retrofits Maintenance of the retrofits device consists of all labor, tools, materials, equipment and necessary incidentals toremove and properly dispose of accumulated sediment in the permanent detention pond being utilized as atemporary sediment basin. This item also includes any maintenance that is required to ensure the retrofit device ismaintained per Plan details and any maintenance of the stone filter to maintain its filtering ability, includingcleaning and replacement. I.Construction Exits Maintenance of the construction exits consists of all labor, tools, materials, equipment and incidentals, includingadditional 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 sediment s torage device down to the original ground line (0% filled). Cleaning of the construction exit by scraping and/or brooming only wil l not be measured for payment. J.Inlet Sediment Traps Maintenance of inlet sediment traps consists of all labor, tools, materials, equipment, and necessary incidentals toremove 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 materialselected to construct the inlet sediment trap. K.Rock Filter Dams Maintenance of rock filter dams consists of all labor, tools, materials, equipment, and necessary incidentals t o 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. L.Stone Filter Berms Maintenance of stone filter berms consists of all labor, tools, materials, equipment, and necessary incidentals toremove and dispose of accumulated sediment down to the original ground line (0% filled). This item also includesthe removal of any material deposited in sump holes. M.Stone Filter Rings Maintenance of stone filter rings consists of all labor, tools, materials, equipment, and necessary incidentals toremove and dispose of accumulated sediment down to the original ground line (0% filled). This item also includesthe removal of any material deposited in sump holes. N.Temporary Sediment Traps 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 ite m als 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
A.Temporary Silt Fence Maintenance of temporary silt fence, Type A or C, is the actual linear feet (meter) of silt fence measured in pl ace 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. B.Silt Control Gates Maintenance of temporary silt control gates, Type 1, 2, or 3, as specified on the p lans is measured as a single unit. C.Check Dams (All Types) Maintenance of temporary erosion control check dams as specified on the plans is the actual linear feet (meter) o f b aled straw, or rip rap, measured in place, where sediment is removed. D.Silt Retention Barriers Maintenance of temporary silt retention barrier as specified on the plans is measured by the linear foot (meter) where sediment is removed. E.Temporary Sediment Basins Maintenance of temporary sediment basins as specified on the plans is measured as a single unit. F.Sediment Barriers Maintenance of sediment barriers is the actual linear feet (meter) measured in place where sediment is removed. G.Triangular Silt Barrie rs Maintenance of triangular silt barrier as specified on the plans is measured by the linear foot (meter) wher e s ediment is removed. H.Retrofits 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. J.Inlet Sediment Traps Maintenance of inlet sediment traps at the location specified on the plans, or as added by the Engineer is measured per each. K.Rock Filter Dams 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
L.Stone Filter Berms Maintenance of stone filter berms as specified on the plans is measured per linear foot (meter). M.Stone Filter Rings Maintenance of stone filter rings as specified on the plans is measured as a single unit. N.Temporary Sediment Traps 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
A.Temporary Silt Fence Maintenance of temporary silt fence, Type A or C, is paid for at the contract unit price bid per linear foot (meter). B.Silt Control Gates Maintenance of temporary silt control gates, Type 1, 2, or 3 , as specified on the plans is paid for at the contrac t uni t price bid per each. C.Check Dams Maintenance of c heck d ams as specified on the plans is paid for at the contract unit price bid per linear foot (meter). D.Silt Retention Barriers Maintenance of temporary silt retention barriers as specified on the plans is paid for at the contract unit price bid per linear foot (meter). E.Temporary Sediment Basins Maintenance of temporary sediment basins as specified on the plans is paid for at the contract unit price bid per each. F.Sediment Barriers 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). H.Retrofits Maintenance of the retrofit devices at the location specified on the plans is paid for at the contract unit price bid per each. I.Construction Exits 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 E ngineer is paid for at the contract unit price per each when added to an existing construction exit. J.Inlet Sediment Traps Maintenance of the inlet sediment traps at the location specified on the plans or at the location specified by the E ngineer is paid for at the contract unit price per each. 156 156 156 156 156 156 156 156 156 156
K.Rock Filter Dams Maintenance of rock filter dams as specified on the Plans is paid for at the contract unit price bid per each. L.Stone Filter Berms Maintenance of stone filter berms as specified on the Plans is paid for at the contract unit price bid per linear foot (meter). M.Stone Filter Rings 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