666.01 Description.
665-Q Wattle - per linear foot {meter} 665-R Silt Dike - per linear foot {meter } 665-S Brush Barrier - per linear foot {meter} 665-T Temporary Earth Berm - per linear foot {meter} 665-X Basin Dewatering Device – per each PEST CONTROL
666.01 Description.
The work covered by this Section shall consist of furnishing and applying designated chemicals to control certain destructive pests, namely, Armyworm, Fall Armyworm, Cutworm, Spittlebug, White Grubs and Pine Bark Beetles. Because of the destructive nature of the action of these pests to trees and ground cover with the possible result of erosion and ultimate siltation of areas, control of these pests is a necessity. Both the Engineer and the Contractor have the responsibility of continually observing the planted areas for possible pest dam age. The Contractor should, upon observing any of these pests, report such to the Engineer, both verbally and in writing. The Engineer will verify any reports of this type of pest and direct appropriate treatment to be taken. The following brief descriptio ns are provided for ease in recognizing these pests: Armyworm : A medium size caterpillar of dark green color with white stripes on sides and down the middle of the back, Size, approximately 1 inch {25 mm} in length. This worm usually feeds only at night de stroying foliage. Fall Armyworm : A medium size caterpillar of dark green color with white stripes on sides and down the middle of the back with a distinctive yellow inverted "Y" on the head capsule. Size, approximately 1 inch {25 mm}. This worm will feed both day and night destroying foliage. Cutworm : A fat bodied caterpillar with a greasy appearance, color mostly greybrown or mottled on top and lighter color underneath. Size, approximately 1 to 2 inches {25 to 50 mm} in length when full grown. This worm hi des during the day and feeds at night, destroying foliage. Spittlebug : Most easily identified by a frothy mass of plant juice at the forks of plant stems resembling spittle. This pest lives inside the spittle mass. White Grubs : The immature (larval) stage of June or May beetles. Length, 0.5 to 1.5 inches {13 to 38 mm}, have three pairs of legs near the head, and characteristically rest in a C -shaped position. Their heads and rear ends are brown. Green June Beetle grubs crawl on their backs with their legs u p. Pine Bark Beetles : These beetles are distinguished from other bark beetles in that the rearward end of the abdomen is scooped out and spined (4 to 6 spines on each side). The southern pine beetle and black turpentine beetle have a more rounded abdomen. The black turpentine beetle is the larger of the two, being about 1/4 inch {6 mm} long . The southern pine beetle is about 1/8 {3mm} inch long. All of the pine bark beetles are roughly cylindrical and are dark brown to black.
666.02 Material.
The treatments to be used under this Section shall be as per the current Alabama Pesticide Handbook or Guidelines as may be issued by the Alabama Cooperative Extension Service. As new pesticide materials are approved by the State Department of Agriculture and Industr ies, the Bureau of Construction may allow their use upon written request by the Contractor. All chemicals shall be a product of a reputable manufacturer, processed in accordance with all State and Federal regulations for such manufacture. Restricted Use of Insecticides Whenever the State Department of Agriculture and Industries or other Federal or State agency restricts the use of any insecticide on highway right -of-way, its initial or continued use shall require the approval of the Construction Engineer. I t is illegal to place herbicides in a manner that is not consistent with the requirements shown on the insecticide container labeling.
666.05 Basis of Payment.
666.03 Construction Requirements.
a.General . The Engineer after verification of the pest occurrence and identification of the type pest shall direct the use of treatments as noted in Article 666.02 in accordance with the following: Equipment used in the application shall be designed for the application method to be used and approved by the Engineer for use. The application of pesticides shall be performed by or under the direct supervision of a licensed pesticide applicator, licensed in the area of right -of-way pest control. Uniform coverage is required. If uniform coverage is not obtained, the Contractor shall retreat the entire area in such a manner that uniform coverage is obtained. Retreatment because of uneven coverage shall be without additional cost to the State. Retreatment shall not be performed within seven days of the original treatment. All treatments shall be at the direction of the Engineer. In all treatments, dilutions of liquids and technical material dosage applied shall follow label instructions, these Specifications and be verified by the Engineer. Any change to the dilution rates of a specific chemical or the substitution of chemicals other than those meeting the requirements of Article 666.02 must have prior written approval of the Construction Engineer and any such approved change must be without additional cost to the State.
b.Safeguards . Safeguards in applying insecticides are the responsibility of the Contractor, and he shall be responsible for any damage to humans or wildlife incurred during application operations. The following are minimum basic safeguards to be observed.
1.Avoid drift of any spray or dust material on adjacent property.
2.Confine Sprays or Dust to areas that will not contaminate streams or lakes adjacent to the Right -of-Way.
3.Carbaryl (Sevin) and Malathion are highly toxic to bees; therefore, if spraying or dusting is carried out near bee yards, give advance notice to beekeeper so that he can protect his bees.
4.In general, spraying with ground equipment is the least hazardous to wildlife; therefore, all treatment shall be applied by approved ground driven equipment un less approved otherwise by the Engineer.
5.Operators of spraying or dusting equipment must wear the recommended apparel for specific insecticides being applied in executing this work.
6.Only qualified personnel will be permitted to engage in this type op eration. The Contractor or subcontractor shall submit, if required by the Alabama Department of Transportation, a list of the roads, railroads, or other areas that he has treated. This list must be certified by the official for whom the work was performed.
7.Normally, pesticide spraying will be restricted to roadside areas which are under construction, and subsequently, are not open to the public. However, should areas such as scenic overlooks, rest areas, etc., be ordered treated, precautions for the prot ection of the public must be taken; namely, by keeping pedestrians off the area until the insecticide dissipates from the turf area to a point that it is no longer an area of concern in accordance with the product labeling.
666.04 Method of Measurement.
Item 666- A will be measured in acres {hectares} computed from surface measurements taken parallel to the treated surface. Computations will be to the nearest 0.1 of an acre {0.1 ha}. Item 666 -B will be measured by the gallon {liter} of dispensed solution wi th measurements taken from the storage vessel before and following dispersal to determine the actual amount of solution used. Computations will be to the nearest gallon {L}. Item 666 -C will be measured by the square yard {square meter} of dispensed soluti on with surface measurements taken parallel to the treated surface. Computations will be to the nearest 0.1 square yard {0.1 square meter}.
666.05 Basis of Payment.
a.Unit Price Coverage . Completed and accepted pest control treatment measured as noted ab ove shall be full compensation for the furnishing of the respective insecticide noted, for the uniform application of the
668.01 Description.
insecticide and for all materials, equipment, tools, labor and incidentals necessary for the satisfactory completion of the work.
b.Payment will be made under Item No .: 666-A Pest Control Treatment - per acre {ha} 666-B Spot Pest Control Treatment - ( * ) ( ** ) ( *** ) ( **** ) per gallon {L} 666-C Spot Pest Control Treatment - ( * ) ( ** ) ( *** ) ( **** ) per square yard {squ are meter} * Specify Type ** Specify Rate *** Specify Carrier Rate of Application **** Specify Type of Carrier SECTION 668 PRE-EMERGENT HERBICIDE TREATMENT
668.01 Description.
This section shall cover the work of ap plying soil active herbicide(s) on the highway right -of-way in accordance with the plans, specifications, material label instructions, or as directed by the Engineer to control the growth of noxious weeds, brush, vines and grasses.
668.02 Materials.
Materials furnished for use in this vegetation control work shall be produced by reputable, recognized manufacturers and registered by the U.S. Environmental Protection Agency. Materials shall be licensed for use in the State of Alabama and shall be pre -qualified for use by the Alabama Department of Transportation. An approved drift control agent shall be used in all liquid broadcast applications. Adjuvants, such as, but not limited to, surfactants shall be used when called for by product label instructio ns of the herbicide designated on the plans or directed by the Engineer. All herbicide and related adjuvants shall be labeled for right -of-way use. Unless specified otherwise by the plans and/or proposal, potable water shall be the carrier for dispersing the herbicide. The use of herbicides other than those dispensed with a water carrier, such as granules, pellets, powders, capsules, etc., shall be placed as indicated on the product label at locations indicated on the plans, or as directed by the Enginee r. Herbicides and their application rates that are approved for use on ALDOT rights -of-way may be found in the latest edition of the Addendum to “A Manual for Roadside Vegetation Management – Chapter IV” which is revised, printed and distributed annually by the Alabama Department of Transportation’s Maintenance Bureau. The type of herbicide required on the project and the required application rate will be shown on the Plans.
668.03 Construction Requirements.
a.Equipment .
1.Equipment for Broadcast Spraying . The Contractor shall utilize equipment in this contract that is in good working condition and is suitable and safe for accurately dispensing herbicide within the right -of-way limits of the highway and for performing the work required un der this contract. The contractor shall provide sufficient equipment and accessory items necessary for efficient operation and completion of the herbicide application in the designated time limitations. Broadcast spraying equipment shall be capable of con trolling the rate of application using a computerized, calibrated sprayer. The computer module and accessory equipment shall be capable of monitoring ground speed with the ability to compensate the output volume of the spray solution to provide accurate a nd uniform dispensing of the spray solution to the surface area of the highway right-of-way throughout the operable speed range. The computer shall have a non -volatile memory with the ability to store and report data. Reporting capability shall include quantity of material sprayed, area treated, and hours of operation on a daily basis. Equipment shall be capable of dispensing herbicide by either (1) tank mixed solution, or (2) chemical injection and mixing immediately prior to the distribution nozzles. I n the event tank mix equipment is used, means shall be provided for constant agitation (either jet or mechanical) of the mixture during the filling and spraying operation. Each piece of equipment shall be equipped with a
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 573–574 of 934.