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MANNER OF APPLICATION Application of the chemical root control agent will be by foaming in accordance with the best-recommended practice for conditions present in the line under treatment. All foaming procedures will be in strict accordance with the instructions on the container label. All solution will be mixed fresh, the day the work is to be performed. The water used to prepare the solution will be clear, cool, and free of acid, alkali, oxidizing agents, large amounts of oil, compounds or materials. A foam discharge hose will be inserted throughout the entire length of the sewer section to be treated. Hydraulic sewer cleaners or other such equipment that might damage the roots, thereby reducing the immediate absorption of the root control agent, will not be used in the treatment process. Chemical foam will be applied under pressure to assure that the entire sewer section is completely filled with foam, and to assure that foam penetrates "wye" connections. The hose retrieval will be timed to evenly distribute the full quantity of foam throughout the entire area of treatment. The quantity of foam will be sufficient to completely fill the entire volume of the main line sewer, plus an additional 10% to allow for the penetration of material up connecting lateral sewers, and the loss of material in manholes. Sewer service to homeowners will not be interrupted. An approved fresh water, backflow, prevention system will be provided, and will be used whenever filling any chemical storage tank with fresh water. MIXING AND HANDLING All liquid products will be packaged in re-usable containers that are DOT approved for such use. These containers will be part of a closed mixing and handling system. A closed mixing and handling system is provided in order to eliminate, or significantly minimize worker exposure to volatile liquid compounds. DUKE'S RESPONSIBILITIES 1. Duke's will keep complete, accurate records of each day's operation. Records shall show the date of treatment, the sections of line treated, pipe size and distance, and other pertinent information. Records and invoice will be submitted upon completion. 2. Duke's will respect the rights of property owners, and not enter upon private property without obtaining permission from the owner. 3. Duke's will place proper traffic warning devices to protect the specific job site, and to prevent accidents or personal injury to the public. THE CUSTOMER'S RESPONSIBILITIES 1. Provide a department representative to accompany Duke's crew, and/or sewer system drawings showing the exact locations of the pipes to be treated. 2. Assist and make provision for entering private lands, public lands and right-of-ways. Locate and uncover hidden or buried manholes 3. Provide potable water for the purpose of mixing the root control agent and for clean up.