721DESCRIPTION

721.01 DESCRIPTION. Mow grass and weeds; trim overhanging

branches, vegetation, and trees; and collect and remove trimmings and debris within the highway right -of-way or as directed. Mowing shall be coordinated with existing mowing contracts for areas that are adjacent to the construction area if possible .

721.02 Equipment.

Rotary mowers will normally be utilized in the mowing of the right -of- way; however, sickle bar mowers, side mounts, flail, or boom mowers may be used to mow around bridges, culverts, sign posts, mailboxes, delineators, guardrails, wet areas and ditches, etc., as approved by the engineer. Other types of grass -cuttin g equipment may be used, provided they have been approved by the engineer prior to use. Equip all rotary mowers with safety chains to prevent damage to property by flying debris from under the mower. Maximum cutting widths for rigid frame rotary mowers shall be 9 feet . Hand trimming will be required in some areas. Shield mowers to prevent flying debris from the cutter blades in accordance with OSHA 29 CFR § Part 1928.57 . Equip all vehicles and equipment used in performance of the work with amber flashing lights. Equip tractors with two fender mounted amber flashing lights, two red flags mounted on each side of the rollover protective structure (ROPS) cage, a plainly visible rear mounted slow moving vehicle emblem, and working headlights. Keep all mowers in good operating condition and maintain to provide a clean sharp cut at all times. All equipment will be inspected by the engineer for safety devices and suitability for the work prior to being placed in operation. Properly maintain all safety devices and keep functioning at all times.

721.03 General Construction Requirements.

721.03.1 Debris Collection : Pick up and properly dispose of all

trash and debris ahead of the mowing operation. Clean all grassed areas, ditches, paved roadside sh oulders, fences, and under overhead bridges within the project limits. Pick up all trash uncovered by the mowing Mowing, Trimming , and Debris Collection

721.01 DESCRIPTION. Mow grass and weeds; trim overhanging

branches, vegetation, and trees; and collect and remove trimmings and debris within the highway right -of-way or as directed. Mowing shall be coordinated with existing mowing contracts for areas that are adjacent to the construction area if possible .

721.02 Equipment.

Rotary mowers will normally be utilized in the mowing of the right -of- way; however, sickle bar mowers, side mounts, flail, or boom mowers may be used to mow around bridges, culverts, sign posts, mailboxes, delineators, guardrails, wet areas and ditches, etc., as approved by the engineer. Other types of grass -cuttin g equipment may be used, provided they have been approved by the engineer prior to use. Equip all rotary mowers with safety chains to prevent damage to property by flying debris from under the mower. Maximum cutting widths for rigid frame rotary mowers shall be 9 feet . Hand trimming will be required in some areas. Shield mowers to prevent flying debris from the cutter blades in accordance with OSHA 29 CFR § Part 1928.57 . Equip all vehicles and equipment used in performance of the work with amber flashing lights. Equip tractors with two fender mounted amber flashing lights, two red flags mounted on each side of the rollover protective structure (ROPS) cage, a plainly visible rear mounted slow moving vehicle emblem, and working headlights. Keep all mowers in good operating condition and maintain to provide a clean sharp cut at all times. All equipment will be inspected by the engineer for safety devices and suitability for the work prior to being placed in operation. Properly maintain all safety devices and keep functioning at all times.

721.03 General Construction Requirements.

721.03.1 Debris Collection : Pick up and properly dispose of all

trash and debris ahead of the mowing operation. Clean all grassed areas, ditches, paved roadside sh oulders, fences, and under overhead bridges within the project limits. Pick up all trash uncovered by the mowing Mowing, Trimming , and Debris Collection

721.01 DESCRIPTION. Mow grass and weeds; trim overhanging

branches, vegetation, and trees; and collect and remove trimmings and debris within the highway right -of-way or as directed. Mowing shall be coordinated with existing mowing contracts for areas that are adjacent to the construction area if possible .

721.02 Equipment.

Rotary mowers will normally be utilized in the mowing of the right -of- way; however, sickle bar mowers, side mounts, flail, or boom mowers may be used to mow around bridges, culverts, sign posts, mailboxes, delineators, guardrails, wet areas and ditches, etc., as approved by the engineer. Other types of grass -cuttin g equipment may be used, provided they have been approved by the engineer prior to use. Equip all rotary mowers with safety chains to prevent damage to property by flying debris from under the mower. Maximum cutting widths for rigid frame rotary mowers shall be 9 feet . Hand trimming will be required in some areas. Shield mowers to prevent flying debris from the cutter blades in accordance with OSHA 29 CFR § Part 1928.57 . Equip all vehicles and equipment used in performance of the work with amber flashing lights. Equip tractors with two fender mounted amber flashing lights, two red flags mounted on each side of the rollover protective structure (ROPS) cage, a plainly visible rear mounted slow moving vehicle emblem, and working headlights. Keep all mowers in good operating condition and maintain to provide a clean sharp cut at all times. All equipment will be inspected by the engineer for safety devices and suitability for the work prior to being placed in operation. Properly maintain all safety devices and keep functioning at all times.

721.03 General Construction Requirements.

721.03.1 Debris Collection : Pick up and properly dispose of all

trash and debris ahead of the mowing operation. Clean all grassed areas, ditches, paved roadside sh oulders, fences, and under overhead bridges within the project limits. Pick up all trash uncovered by the mowing Mowing, Trimming , and Debris Collection

721.01 DESCRIPTION. Mow grass and weeds; trim overhanging

branches, vegetation, and trees; and collect and remove trimmings and debris within the highway right -of-way or as directed. Mowing shall be coordinated with existing mowing contracts for areas that are adjacent to the construction area if possible .

721.02 Equipment.

Rotary mowers will normally be utilized in the mowing of the right -of- way; however, sickle bar mowers, side mounts, flail, or boom mowers may be used to mow around bridges, culverts, sign posts, mailboxes, delineators, guardrails, wet areas and ditches, etc., as approved by the engineer. Other types of grass -cuttin g equipment may be used, provided they have been approved by the engineer prior to use. Equip all rotary mowers with safety chains to prevent damage to property by flying debris from under the mower. Maximum cutting widths for rigid frame rotary mowers shall be 9 feet . Hand trimming will be required in some areas. Shield mowers to prevent flying debris from the cutter blades in accordance with OSHA 29 CFR § Part 1928.57 . Equip all vehicles and equipment used in performance of the work with amber flashing lights. Equip tractors with two fender mounted amber flashing lights, two red flags mounted on each side of the rollover protective structure (ROPS) cage, a plainly visible rear mounted slow moving vehicle emblem, and working headlights. Keep all mowers in good operating condition and maintain to provide a clean sharp cut at all times. All equipment will be inspected by the engineer for safety devices and suitability for the work prior to being placed in operation. Properly maintain all safety devices and keep functioning at all times.

721.03 General Construction Requirements.

721.03.1 Debris Collection : Pick up and properly dispose of all

trash and debris ahead of the mowing operation. Clean all grassed areas, ditches, paved roadside sh oulders, fences, and under overhead bridges within the project limits. Pick up all trash uncovered by the mowing operations within 48 hours. Remove trash and debris picked up and piled or bagged on the roadside from the right -of-way by the end of the sam e work day. Do not pile bagged trash and debris on travel lanes or paved shoulders.

721.03.2 Mowing Operations : Furnish sufficient number and types

of equipment best suited to perform the work. Adjust mowers for a cutting height of approximately 5 inches. Pro vide a safety vehicle equipped with warning lights to follow mowers, along with personnel and equipment to do the trimming. Trim directly behind the mower at a safe distance.

721.03.3 Mowable Areas : Mowable areas are defined as all of the

grassed or vegetated a reas of the right -of-way, extending from right -of-way line to right -of-way line or tree line to tree line or fence line to fence line as applicable, including but not limited to, banks of natural waterways, swale ditches, V -ditches, ditch bottoms, and slop es. Mowable areas also include areas under bridges and around guardrails, sign posts, delineators, curbs, culvert ends, trees, shrubs, plants, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is require d on both sides due to the presence of service roads, swale ditches, V-ditches, and slopes or other facilities. These areas may not be accessible to standard mowing equipment and may require hand trimming or specialized mowing equipment such as boom or si de mount mowers. Mowable vegetation is defined as any trees, vege tation, brush, etc., which is 2 inches in diameter or less measured 5 inches above the ground.

721.03.3 1 Divided and Undivided Highway and Frontage

Roads: Mow all mowable areas within the right -of-way. Remove or cutback all overhanging vegetation or trees, regardless of size, which may hinder or prohibit mowing to the tree line or right -of-way line at no direct pay. Remove trimmings from the right -of-way or chip. Disperse chips to not interfere with drainage.

721.03.3 2 Right -of-Way Line: Include a mowable area strip

approximately 7 feet wide along the fence line or right -of way line, if applicable and terrain permits. Remove all overhanging vegetation or fallen trees, regardless of size, whic h may hinder or prohibit mowing of this strip at no direct pay.

721.03.3 3 Natural Waterways Or Canals Crossing The

Right -Of-Way: Cut all vegetation (weeds, grasses, vines, and trees) on the waterway banks (slopes), canal bottoms, in the median, beneath the inters tate bridges, and in the right -of-way to the tree line or right-of-way operations within 48 hours. Remove trash and debris picked up and piled or bagged on the roadside from the right -of-way by the end of the sam e work day. Do not pile bagged trash and debris on travel lanes or paved shoulders.

721.03.2 Mowing Operations : Furnish sufficient number and types

of equipment best suited to perform the work. Adjust mowers for a cutting height of approximately 5 inches. Pro vide a safety vehicle equipped with warning lights to follow mowers, along with personnel and equipment to do the trimming. Trim directly behind the mower at a safe distance.

721.03.3 Mowable Areas : Mowable areas are defined as all of the

grassed or vegetated a reas of the right -of-way, extending from right -of-way line to right -of-way line or tree line to tree line or fence line to fence line as applicable, including but not limited to, banks of natural waterways, swale ditches, V -ditches, ditch bottoms, and slop es. Mowable areas also include areas under bridges and around guardrails, sign posts, delineators, curbs, culvert ends, trees, shrubs, plants, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is require d on both sides due to the presence of service roads, swale ditches, V-ditches, and slopes or other facilities. These areas may not be accessible to standard mowing equipment and may require hand trimming or specialized mowing equipment such as boom or si de mount mowers. Mowable vegetation is defined as any trees, vege tation, brush, etc., which is 2 inches in diameter or less measured 5 inches above the ground.

721.03.3 1 Divided and Undivided Highway and Frontage

Roads: Mow all mowable areas within the right -of-way. Remove or cutback all overhanging vegetation or trees, regardless of size, which may hinder or prohibit mowing to the tree line or right -of-way line at no direct pay. Remove trimmings from the right -of-way or chip. Disperse chips to not interfere with drainage.

721.03.3 2 Right -of-Way Line: Include a mowable area strip

approximately 7 feet wide along the fence line or right -of way line, if applicable and terrain permits. Remove all overhanging vegetation or fallen trees, regardless of size, whic h may hinder or prohibit mowing of this strip at no direct pay.

721.03.3 3 Natural Waterways Or Canals Crossing The

Right -Of-Way: Cut all vegetation (weeds, grasses, vines, and trees) on the waterway banks (slopes), canal bottoms, in the median, beneath the inters tate bridges, and in the right -of-way to the tree line or right-of-way operations within 48 hours. Remove trash and debris picked up and piled or bagged on the roadside from the right -of-way by the end of the sam e work day. Do not pile bagged trash and debris on travel lanes or paved shoulders.

721.03.2 Mowing Operations : Furnish sufficient number and types

of equipment best suited to perform the work. Adjust mowers for a cutting height of approximately 5 inches. Pro vide a safety vehicle equipped with warning lights to follow mowers, along with personnel and equipment to do the trimming. Trim directly behind the mower at a safe distance.

721.03.3 Mowable Areas : Mowable areas are defined as all of the

grassed or vegetated a reas of the right -of-way, extending from right -of-way line to right -of-way line or tree line to tree line or fence line to fence line as applicable, including but not limited to, banks of natural waterways, swale ditches, V -ditches, ditch bottoms, and slop es. Mowable areas also include areas under bridges and around guardrails, sign posts, delineators, curbs, culvert ends, trees, shrubs, plants, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is require d on both sides due to the presence of service roads, swale ditches, V-ditches, and slopes or other facilities. These areas may not be accessible to standard mowing equipment and may require hand trimming or specialized mowing equipment such as boom or si de mount mowers. Mowable vegetation is defined as any trees, vege tation, brush, etc., which is 2 inches in diameter or less measured 5 inches above the ground.

721.03.3 1 Divided and Undivided Highway and Frontage

Roads: Mow all mowable areas within the right -of-way. Remove or cutback all overhanging vegetation or trees, regardless of size, which may hinder or prohibit mowing to the tree line or right -of-way line at no direct pay. Remove trimmings from the right -of-way or chip. Disperse chips to not interfere with drainage.

721.03.3 2 Right -of-Way Line: Include a mowable area strip

approximately 7 feet wide along the fence line or right -of way line, if applicable and terrain permits. Remove all overhanging vegetation or fallen trees, regardless of size, whic h may hinder or prohibit mowing of this strip at no direct pay.

721.03.3 3 Natural Waterways Or Canals Crossing The

Right -Of-Way: Cut all vegetation (weeds, grasses, vines, and trees) on the waterway banks (slopes), canal bottoms, in the median, beneath the inters tate bridges, and in the right -of-way to the tree line or right-of-way operations within 48 hours. Remove trash and debris picked up and piled or bagged on the roadside from the right -of-way by the end of the sam e work day. Do not pile bagged trash and debris on travel lanes or paved shoulders.

721.03.2 Mowing Operations : Furnish sufficient number and types

of equipment best suited to perform the work. Adjust mowers for a cutting height of approximately 5 inches. Pro vide a safety vehicle equipped with warning lights to follow mowers, along with personnel and equipment to do the trimming. Trim directly behind the mower at a safe distance.

721.03.3 Mowable Areas : Mowable areas are defined as all of the

grassed or vegetated a reas of the right -of-way, extending from right -of-way line to right -of-way line or tree line to tree line or fence line to fence line as applicable, including but not limited to, banks of natural waterways, swale ditches, V -ditches, ditch bottoms, and slop es. Mowable areas also include areas under bridges and around guardrails, sign posts, delineators, curbs, culvert ends, trees, shrubs, plants, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is require d on both sides due to the presence of service roads, swale ditches, V-ditches, and slopes or other facilities. These areas may not be accessible to standard mowing equipment and may require hand trimming or specialized mowing equipment such as boom or si de mount mowers. Mowable vegetation is defined as any trees, vege tation, brush, etc., which is 2 inches in diameter or less measured 5 inches above the ground.

721.03.3 1 Divided and Undivided Highway and Frontage

Roads: Mow all mowable areas within the right -of-way. Remove or cutback all overhanging vegetation or trees, regardless of size, which may hinder or prohibit mowing to the tree line or right -of-way line at no direct pay. Remove trimmings from the right -of-way or chip. Disperse chips to not interfere with drainage.

721.03.3 2 Right -of-Way Line: Include a mowable area strip

approximately 7 feet wide along the fence line or right -of way line, if applicable and terrain permits. Remove all overhanging vegetation or fallen trees, regardless of size, whic h may hinder or prohibit mowing of this strip at no direct pay.

721.03.3 3 Natural Waterways Or Canals Crossing The

Right -Of-Way: Cut all vegetation (weeds, grasses, vines, and trees) on the waterway banks (slopes), canal bottoms, in the median, beneath the inters tate bridges, and in the right -of-way to the tree line or right-of-way operations within 48 hours. Remove trash and debris picked up and piled or bagged on the roadside from the right -of-way by the end of the sam e work day. Do not pile bagged trash and debris on travel lanes or paved shoulders.

721.03.2 Mowing Operations : Furnish sufficient number and types

of equipment best suited to perform the work. Adjust mowers for a cutting height of approximately 5 inches. Pro vide a safety vehicle equipped with warning lights to follow mowers, along with personnel and equipment to do the trimming. Trim directly behind the mower at a safe distance.

721.03.3 Mowable Areas : Mowable areas are defined as all of the

grassed or vegetated a reas of the right -of-way, extending from right -of-way line to right -of-way line or tree line to tree line or fence line to fence line as applicable, including but not limited to, banks of natural waterways, swale ditches, V -ditches, ditch bottoms, and slop es. Mowable areas also include areas under bridges and around guardrails, sign posts, delineators, curbs, culvert ends, trees, shrubs, plants, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is require d on both sides due to the presence of service roads, swale ditches, V-ditches, and slopes or other facilities. These areas may not be accessible to standard mowing equipment and may require hand trimming or specialized mowing equipment such as boom or si de mount mowers. Mowable vegetation is defined as any trees, vege tation, brush, etc., which is 2 inches in diameter or less measured 5 inches above the ground.

721.03.3 1 Divided and Undivided Highway and Frontage

Roads: Mow all mowable areas within the right -of-way. Remove or cutback all overhanging vegetation or trees, regardless of size, which may hinder or prohibit mowing to the tree line or right -of-way line at no direct pay. Remove trimmings from the right -of-way or chip. Disperse chips to not interfere with drainage.

721.03.3 2 Right -of-Way Line: Include a mowable area strip

approximately 7 feet wide along the fence line or right -of way line, if applicable and terrain permits. Remove all overhanging vegetation or fallen trees, regardless of size, whic h may hinder or prohibit mowing of this strip at no direct pay.

721.03.3 3 Natural Waterways Or Canals Crossing The

Right -Of-Way: Cut all vegetation (weeds, grasses, vines, and trees) on the waterway banks (slopes), canal bottoms, in the median, beneath the inters tate bridges, and in the right -of-way to the tree line or right-of-way operations within 48 hours. Remove trash and debris picked up and piled or bagged on the roadside from the right -of-way by the end of the sam e work day. Do not pile bagged trash and debris on travel lanes or paved shoulders.

721.03.2 Mowing Operations : Furnish sufficient number and types

of equipment best suited to perform the work. Adjust mowers for a cutting height of approximately 5 inches. Pro vide a safety vehicle equipped with warning lights to follow mowers, along with personnel and equipment to do the trimming. Trim directly behind the mower at a safe distance.

721.03.3 Mowable Areas : Mowable areas are defined as all of the

grassed or vegetated a reas of the right -of-way, extending from right -of-way line to right -of-way line or tree line to tree line or fence line to fence line as applicable, including but not limited to, banks of natural waterways, swale ditches, V -ditches, ditch bottoms, and slop es. Mowable areas also include areas under bridges and around guardrails, sign posts, delineators, curbs, culvert ends, trees, shrubs, plants, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is require d on both sides due to the presence of service roads, swale ditches, V-ditches, and slopes or other facilities. These areas may not be accessible to standard mowing equipment and may require hand trimming or specialized mowing equipment such as boom or si de mount mowers. Mowable vegetation is defined as any trees, vege tation, brush, etc., which is 2 inches in diameter or less measured 5 inches above the ground.

721.03.3 1 Divided and Undivided Highway and Frontage

Roads: Mow all mowable areas within the right -of-way. Remove or cutback all overhanging vegetation or trees, regardless of size, which may hinder or prohibit mowing to the tree line or right -of-way line at no direct pay. Remove trimmings from the right -of-way or chip. Disperse chips to not interfere with drainage.

721.03.3 2 Right -of-Way Line: Include a mowable area strip

approximately 7 feet wide along the fence line or right -of way line, if applicable and terrain permits. Remove all overhanging vegetation or fallen trees, regardless of size, whic h may hinder or prohibit mowing of this strip at no direct pay.

721.03.3 3 Natural Waterways Or Canals Crossing The

Right -Of-Way: Cut all vegetation (weeds, grasses, vines, and trees) on the waterway banks (slopes), canal bottoms, in the median, beneath the inters tate bridges, and in the right -of-way to the tree line or right-of-way fence line to within 5 inches of the ground by any means chosen except that all non-mowable vegetation shall be removed to ground level. Mowing of this area may require specialized equipment such as weed trimmers and boom or slope mowers. There will be no additional payment for this work if the area involved is included in the mowable acreage listed elsewhere.

721.03.3 4 Catch Basins and Gutters: Perform the mowing

operation without buildup of grass clippings on catch basins and in gutters. If the mowing operation deposits grass clippings on catch basins and in gutters, remove such clippings from the entrance to the catch basin by hand or other metho ds acceptable to the engineer. Mow as close as practical to all fixed objects exercising extreme care not to damage trees, plants, shrubs, delineators, catch basins, or other appurtenances which are part of the facility.

721.03.4 Hand Trimming : Hand trim around fixed objects such as

sign posts, curbs, delineators, culvert ends, trees, shrubs, plants, guardrails, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is required on both sides due to the presence of service roads or other facilities, et c. as directed by the engineer. Trim behind the mowing operation by no later than 24 hours.

721.03.5 Use of Herbicides : Herbicides may be used around signs,

guardrails, culvert ends, bridges revetments, ditches, laterals, fences, etc., to reduce the volume of h and trimming. General spraying of herbicides to control vegetation and spraying around shrubs, bushes and trees will not be allowed except as otherwise provided in these specifications. Remove vegetation treated with herbicides by manual or mechanical me ans to ground level after the manufacturer’s suggested time period for the herbicide to affect the plant growth. Prior to the use of any herbicides, obtain the approval of the District’s Roadside Development Coordinator for use, type, and rate of applicat ion of any herbicide. The contractor shall have in his possession , and maintain in good standing, a category 6 Pesticide Applicators license obtained through the Louisiana Department of Agriculture and Forestry. The contractor shall conduct his operations in accordance with Section 107 and the requirements of the Louisiana Horticulture Law and Regulations.

721.03.6 Inaccessible Areas : Mowing will not be permitted when,

in the opinion of the engineer, soil and weather conditions are such that the right -of-way will be damaged. However, provide specialized equipment fence line to within 5 inches of the ground by any means chosen except that all non-mowable vegetation shall be removed to ground level. Mowing of this area may require specialized equipment such as weed trimmers and boom or slope mowers. There will be no additional payment for this work if the area involved is included in the mowable acreage listed elsewhere.

721.03.3 4 Catch Basins and Gutters: Perform the mowing

operation without buildup of grass clippings on catch basins and in gutters. If the mowing operation deposits grass clippings on catch basins and in gutters, remove such clippings from the entrance to the catch basin by hand or other metho ds acceptable to the engineer. Mow as close as practical to all fixed objects exercising extreme care not to damage trees, plants, shrubs, delineators, catch basins, or other appurtenances which are part of the facility.

721.03.4 Hand Trimming : Hand trim around fixed objects such as

sign posts, curbs, delineators, culvert ends, trees, shrubs, plants, guardrails, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is required on both sides due to the presence of service roads or other facilities, et c. as directed by the engineer. Trim behind the mowing operation by no later than 24 hours.

721.03.5 Use of Herbicides : Herbicides may be used around signs,

guardrails, culvert ends, bridges revetments, ditches, laterals, fences, etc., to reduce the volume of h and trimming. General spraying of herbicides to control vegetation and spraying around shrubs, bushes and trees will not be allowed except as otherwise provided in these specifications. Remove vegetation treated with herbicides by manual or mechanical me ans to ground level after the manufacturer’s suggested time period for the herbicide to affect the plant growth. Prior to the use of any herbicides, obtain the approval of the District’s Roadside Development Coordinator for use, type, and rate of applicat ion of any herbicide. The contractor shall have in his possession , and maintain in good standing, a category 6 Pesticide Applicators license obtained through the Louisiana Department of Agriculture and Forestry. The contractor shall conduct his operations in accordance with Section 107 and the requirements of the Louisiana Horticulture Law and Regulations.

721.03.6 Inaccessible Areas : Mowing will not be permitted when,

in the opinion of the engineer, soil and weather conditions are such that the right -of-way will be damaged. However, provide specialized equipment fence line to within 5 inches of the ground by any means chosen except that all non-mowable vegetation shall be removed to ground level. Mowing of this area may require specialized equipment such as weed trimmers and boom or slope mowers. There will be no additional payment for this work if the area involved is included in the mowable acreage listed elsewhere.

721.03.3 4 Catch Basins and Gutters: Perform the mowing

operation without buildup of grass clippings on catch basins and in gutters. If the mowing operation deposits grass clippings on catch basins and in gutters, remove such clippings from the entrance to the catch basin by hand or other metho ds acceptable to the engineer. Mow as close as practical to all fixed objects exercising extreme care not to damage trees, plants, shrubs, delineators, catch basins, or other appurtenances which are part of the facility.

721.03.4 Hand Trimming : Hand trim around fixed objects such as

sign posts, curbs, delineators, culvert ends, trees, shrubs, plants, guardrails, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is required on both sides due to the presence of service roads or other facilities, et c. as directed by the engineer. Trim behind the mowing operation by no later than 24 hours.

721.03.5 Use of Herbicides : Herbicides may be used around signs,

guardrails, culvert ends, bridges revetments, ditches, laterals, fences, etc., to reduce the volume of h and trimming. General spraying of herbicides to control vegetation and spraying around shrubs, bushes and trees will not be allowed except as otherwise provided in these specifications. Remove vegetation treated with herbicides by manual or mechanical me ans to ground level after the manufacturer’s suggested time period for the herbicide to affect the plant growth. Prior to the use of any herbicides, obtain the approval of the District’s Roadside Development Coordinator for use, type, and rate of applicat ion of any herbicide. The contractor shall have in his possession , and maintain in good standing, a category 6 Pesticide Applicators license obtained through the Louisiana Department of Agriculture and Forestry. The contractor shall conduct his operations in accordance with Section 107 and the requirements of the Louisiana Horticulture Law and Regulations.

721.03.6 Inaccessible Areas : Mowing will not be permitted when,

in the opinion of the engineer, soil and weather conditions are such that the right -of-way will be damaged. However, provide specialized equipment fence line to within 5 inches of the ground by any means chosen except that all non-mowable vegetation shall be removed to ground level. Mowing of this area may require specialized equipment such as weed trimmers and boom or slope mowers. There will be no additional payment for this work if the area involved is included in the mowable acreage listed elsewhere.

721.03.3 4 Catch Basins and Gutters: Perform the mowing

operation without buildup of grass clippings on catch basins and in gutters. If the mowing operation deposits grass clippings on catch basins and in gutters, remove such clippings from the entrance to the catch basin by hand or other metho ds acceptable to the engineer. Mow as close as practical to all fixed objects exercising extreme care not to damage trees, plants, shrubs, delineators, catch basins, or other appurtenances which are part of the facility.

721.03.4 Hand Trimming : Hand trim around fixed objects such as

sign posts, curbs, delineators, culvert ends, trees, shrubs, plants, guardrails, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is required on both sides due to the presence of service roads or other facilities, et c. as directed by the engineer. Trim behind the mowing operation by no later than 24 hours.

721.03.5 Use of Herbicides : Herbicides may be used around signs,

guardrails, culvert ends, bridges revetments, ditches, laterals, fences, etc., to reduce the volume of h and trimming. General spraying of herbicides to control vegetation and spraying around shrubs, bushes and trees will not be allowed except as otherwise provided in these specifications. Remove vegetation treated with herbicides by manual or mechanical me ans to ground level after the manufacturer’s suggested time period for the herbicide to affect the plant growth. Prior to the use of any herbicides, obtain the approval of the District’s Roadside Development Coordinator for use, type, and rate of applicat ion of any herbicide. The contractor shall have in his possession , and maintain in good standing, a category 6 Pesticide Applicators license obtained through the Louisiana Department of Agriculture and Forestry. The contractor shall conduct his operations in accordance with Section 107 and the requirements of the Louisiana Horticulture Law and Regulations.

721.03.6 Inaccessible Areas : Mowing will not be permitted when,

in the opinion of the engineer, soil and weather conditions are such that the right -of-way will be damaged. However, provide specialized equipment fence line to within 5 inches of the ground by any means chosen except that all non-mowable vegetation shall be removed to ground level. Mowing of this area may require specialized equipment such as weed trimmers and boom or slope mowers. There will be no additional payment for this work if the area involved is included in the mowable acreage listed elsewhere.

721.03.3 4 Catch Basins and Gutters: Perform the mowing

operation without buildup of grass clippings on catch basins and in gutters. If the mowing operation deposits grass clippings on catch basins and in gutters, remove such clippings from the entrance to the catch basin by hand or other metho ds acceptable to the engineer. Mow as close as practical to all fixed objects exercising extreme care not to damage trees, plants, shrubs, delineators, catch basins, or other appurtenances which are part of the facility.

721.03.4 Hand Trimming : Hand trim around fixed objects such as

sign posts, curbs, delineators, culvert ends, trees, shrubs, plants, guardrails, culvert head walls, bridge abutments, bridge or overpass columns and piling, and fences where mowing is required on both sides due to the presence of service roads or other facilities, et c. as directed by the engineer. Trim behind the mowing operation by no later than 24 hours.

721.03.5 Use of Herbicides : Herbicides may be used around signs,

guardrails, culvert ends, bridges revetments, ditches, laterals, fences, etc., to reduce the volume of h and trimming. General spraying of herbicides to control vegetation and spraying around shrubs, bushes and trees will not be allowed except as otherwise provided in these specifications. Remove vegetation treated with herbicides by manual or mechanical me ans to ground level after the manufacturer’s suggested time period for the herbicide to affect the plant growth. Prior to the use of any herbicides, obtain the approval of the District’s Roadside Development Coordinator for use, type, and rate of applicat ion of any herbicide. The contractor shall have in his possession , and maintain in good standing, a category 6 Pesticide Applicators license obtained through the Louisiana Department of Agriculture and Forestry. The contractor shall conduct his operations in accordance with Section 107 and the requirements of the Louisiana Horticulture Law and Regulations.

721.03.6 Inaccessible Areas : Mowing will not be permitted when,

in the opinion of the engineer, soil and weather conditions are such that the right -of-way will be damaged. However, provide specialized equipment such as boom or slope mowers to mow areas not accessible to standard mowing equipment. Use caution to assur e that mud is not tracked onto the road surface. Skip the following areas when mowing:

721.03.7 Safety Requirements : Conduct mowing operations in a

manner that regards the safety and convenience of the public as a prime importance. All equipment and traffic control devices shall be in accordance with the MUTCD and these specification s.

721.04 MEASUREMENT. Mowing will be measured by the cycle and

will include all labor, equipment, materials, and incidentals required to complete the work. Trimming and debris collection will not be measured for payment.

721.05 PAYMENT. Payment for mowing will be made at the contract

unit price per cycle . Payment will be made under: Item No. Pay Item Pay Unit 721-01 Mowing Cycle such as boom or slope mowers to mow areas not accessible to standard mowing equipment. Use caution to assur e that mud is not tracked onto the road surface. Skip the following areas when mowing:

721.03.7 Safety Requirements : Conduct mowing operations in a

manner that regards the safety and convenience of the public as a prime importance. All equipment and traffic control devices shall be in accordance with the MUTCD and these specification s.

721.04 MEASUREMENT. Mowing will be measured by the cycle and

will include all labor, equipment, materials, and incidentals required to complete the work. Trimming and debris collection will not be measured for payment.

721.05 PAYMENT. Payment for mowing will be made at the contract

unit price per cycle . Payment will be made under: Item No. Pay Item Pay Unit 721-01 Mowing Cycle such as boom or slope mowers to mow areas not accessible to standard mowing equipment. Use caution to assur e that mud is not tracked onto the road surface. Skip the following areas when mowing:

721.03.7 Safety Requirements : Conduct mowing operations in a

manner that regards the safety and convenience of the public as a prime importance. All equipment and traffic control devices shall be in accordance with the MUTCD and these specification s.

721.04 MEASUREMENT. Mowing will be measured by the cycle and

will include all labor, equipment, materials, and incidentals required to complete the work. Trimming and debris collection will not be measured for payment.

721.05 PAYMENT. Payment for mowing will be made at the contract

unit price per cycle . Payment will be made under: Item No. Pay Item Pay Unit 721-01 Mowing Cycle such as boom or slope mowers to mow areas not accessible to standard mowing equipment. Use caution to assur e that mud is not tracked onto the road surface. Skip the following areas when mowing:

721.03.7 Safety Requirements : Conduct mowing operations in a

manner that regards the safety and convenience of the public as a prime importance. All equipment and traffic control devices shall be in accordance with the MUTCD and these specification s.

721.04 MEASUREMENT. Mowing will be measured by the cycle and

will include all labor, equipment, materials, and incidentals required to complete the work. Trimming and debris collection will not be measured for payment.

721.05 PAYMENT. Payment for mowing will be made at the contract

unit price per cycle . Payment will be made under: Item No. Pay Item Pay Unit 721-01 Mowing Cycle Section 722 Field Laboratories

722.01 DESCRIPTION. Furnish laboratory buildings at the project sites

for soils and aggregates testing. These laboratories are to be provided exclusively for the use of Department personnel involved in the Department ’s Quality Assurance Program.

722.02 GENERAL REQUIREMENTS . Field laboratories shall be

weather tight and constructed of wood, metal, masonry, or other approved materials for the purpose of housing the personnel, testing equipment, records, and reports as necessary for the Quality Assurance Program. Each laboratory shall have a minimum floor space of 160 square feet, or other approved size, that provides sufficient space with a minimum ceiling height of 7 feet . The laboratory shall have at least one outside door and have sufficient windows. The laboratory buildings shall have electric lighting and power outlets as directed. Provide fume hoods with electric exhaust fans of such size and location as to ensure continuous removal of hazardous fumes and air borne particles during testing operations. Secure the building and contents by suitable lock and catches. Afford the engineer access to the laboratory at all times and provide him or her with a set of keys as necessary. Laboratory buildings shall be constructed, furnished, maintained, and located as approved. Provide suitable desks, chairs, and file cabinets for personnel using these facilities. Construct sturdy work benches along at least one wall, or as directed, to provide sufficient work area for the types of tests being conducted. Laboratory buildings shall be heated and air conditioned, and with sanitary facilities. Provide a telephone for Departmental use. The laboratories may be used for successive phases of a project without additional compensation.

722.03 PROJECT SITE LABORAT ORY. Field laboratory buildings at

the project site shall be movable types which can be placed near