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ROOT CONTROL MATERIAL <br /> <br />Duke’s will supply all components of the root-control material; in order to ensure the <br />compatibility of said materials. All root-control materials provided by Duke’s will be specifically <br />designed for use in sewers. <br /> <br />Duke’s will not use pour down products and/or products composed of acids or caustic <br />compounds that are used to destroy roots or convey herbicide. <br /> <br />Duke’s will be responsible for all shipping, and storage of root control materials. Duke’s is also <br />responsible for the disposal of spent root control material containers. <br /> <br /> <br />MANNER OF APPLICATION <br /> <br />Application of the chemical root control agent will be by foaming in accordance with the best- <br />recommended practice for conditions present in the line under treatment. All foaming <br />procedures will be in strict accordance with the instructions on the container label. <br /> <br />All solution will be mixed fresh, the day the work is to be performed. The water used to prepare <br />the solution will be clear, cool, and free of acid, alkali, oxidizing agents, large amounts of oil, <br />compounds or materials. <br /> <br />A foam discharge hose will be inserted throughout the entire length of the sewer section to be <br />treated. Hydraulic sewer cleaners or other such equipment that might damage the roots, <br />thereby reducing the immediate absorption of the root control agent, will not be used in the <br />treatment process. <br /> <br />Chemical foam will be applied under pressure to assure that the entire sewer section is <br />completely filled with foam, and to assure that foam penetrates "wye" connections. The hose <br />retrieval will be timed to evenly distribute the full quantity of foam throughout the entire area of <br />treatment. The quantity of foam will be sufficient to completely fill the entire volume of the main <br />line sewer, plus an additional 10% to allow for the penetration of material up connecting lateral <br />sewers, and the loss of material in manholes. Sewer service to homeowners will not be <br />interrupted. <br /> <br />An approved fresh water, backflow, prevention system will be provided, and will be used <br />whenever filling any chemical storage tank with fresh water. <br /> <br /> <br />MIXING AND HANDLING <br /> <br />All liquid products will be packaged in re-usable containers that are DOT approved for such use. <br />These containers will be part of a closed mixing and handling system. A closed mixing and <br />handling system is provided in order to eliminate, or significantly minimize worker exposure to <br />volatile liquid compounds . <br /> <br /> <br />