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PREPARATION FOR FUMIGATION Structure Occupant Fact Sheet Prior to the application of ZYTHOR to a structure, the ZYTHOR Fact Sheet must be provided to an ~dult occupant of the structure to be fumigated. In the case of a multi-unit or connected structure (see below), the ZYTHOR fact sheet must be provided to an adult occupant of each currently occupied individual living unit within these structures Fumigating Part(s) of A Structure When fumigating a single uniVroom that is a part of or within a larger structure (such as one or more units of a town house, apartment or condominium building/complex) the space within all units of the entire structure must be considered to be lumigated space with respect to all requirements concerning structure entrance security, posting, evacuation. reentry. aeration and clearance. Fumigating Connected Structures A connected structure or area is defined as any structure or area connected to or having in common with the space to be fumigated any construction elements (e.g. pipes. conduits, ducts, cavities, voids, etc.) which could possibly allow the passage of fumigant out of the fumigated space into Ihe connected structure(s) or area(s). When fumigating a space to which other structures or areas are connected, the connected structure(s) or area(s) must be considered to be a fumigated space with respect to all requirements concerning structure entrance security, posting, evacuation, reentry, aeration and clearance. What to Remove from the Fumigated Space Remove all persons, non-target animals and desirable growing plants from the space to be fumigated. Remove mattresses (except waterbeds) and pillows completely enveloped in waterproof covers or allernately remove covers. Food, feed, drugs (including tobacco products) and medicines (including those items in refrigerators and freezers) can remain within the fumigated space if they are contained within plastic. glass or metal containers with the original manufacturer's air-tight seal intact. Protective Bagging of Open Food, Feed and Drugs . Food, feed. drugs (including tobacco products) and medicines (including those items in refrigerators and freezers) not in plastic, glass or metal containers with the original manufacturer's air-tight seal intact must be removed from the fumigated space or protected against exposure to ZYTHOR if they are left within the fumigated space. Items can be protected against exposure to ZYTHOR by double bagging th!,!m in Fumiguard bags. Fumiguard bags, which are available from Ensystex II, are made of a material highly resistant to permeation from gases such as sulfuryl fluoride. Double bag in Fumiguard bags all items that must be protected against exposure to ZYTHOR that will be left within the fumigated space Double bagging is performed by placing an item in a Fumiguard bag, twisting the top of the bag closed tightly and then securing the twisted part of the bag in its closed position. The closed bag is then double bagged by placing the closed bag inside another bag which is secured closed in the same manner as the inner bag. Extinguishing Flames and Disconnecting Heat Sources Extinguish all flames, including pilot lights of furnaces, water heaters, dryers, gas refrigerators, gas logs, ranges, ovens, broilers, open flames, etc. Turn off or unplug all electrical heating elements such as those in heaters. dryers, pianos, organs, etc. Shut off automatic switch controls for appliances and lighting systems that will be contained within the fumigated space. Contact your local gas company to determine what procedures should be followed in your area for shutting off natural gas or propane service. Gas service should be shut off at the main service valve. Sulfuryl fluoride can react with strong bases such as some photo developing solutions Doors and Openings to Closed Spaces Open and leave open all operable internal doors. Open and leave open all operable openings to rooms, attics, sub-areas, storage rooms and closets. Open and leave open operable doors. covers or lids of any space within which fumigant could accumulate and linger during aeration including storage cabinets. drawers, storage chests and appliances (such as washers, dishwashers, dryers. microwave ovens. conventional ovens, refrigerators, freezers. etc.). Appliances Turn off and/or disconnect appliances as appropriate to the circumstances Alternately leave relrigerators and freezers operating and their doors closed if the choice is made to leave properly sealed items inside of them. If the choice is made to leave sealed items in closed refrigerators and freezers during the exposure period, the appliance's doors should be opened and left open during aeration and clearance of the fumigated space until the concentration of ZYTHOR within their interior is 1 ppm or less as measured by an approved and properly calibrated Low Fumigant Level Detection Device Air Circulation Based on the circumstances, it may be necessary to actively circulate the air in all or part of the fumigated space with properly positioned fans after the release of ZYTHOA to assure its rapid dispersion within all of the fumigated space Parts of the structure that may warrant consideration for active air circulation may include basements, dead air spaces and areas located long distances from a point of ZYTHOR introduction into the fumigated space If possible, position and aim fans in such a manner that air closer to the point(s) of ZYTHOR release is circulated towards points farther Irom the point(s) of ZYTHOR release Fumigant Confinement The methods and materials used to confine the fumigant to a space to be fumigated can vary depending on the nature 01 the space (eg, structure, vehicle. chamber. vessel) and the inherent resistance of the surtaces that lorm the space to the movement of the fumigant out of it (e.g.. masonry walls vs wood walls) The more gas tight the fumigated space inherenfly is or can be rendered to be, the higher the level of fumigant confinement that can be attained. Consider a monitored application of ZYTHOR (see Monitored Vs. Un-Monifored Application) to any fumigated space where there is uncertainty as to whether or not an adequate level of ZYTHOR can be confined to that space for the intended duration of the exposure period. Structure Fumigation Using A Tarpaulin When and to the extent needed, use tarpaulin(s) made of a material that eflectively confines and is sufficiently impermeable to the passage of the fumigant through it such as vinyl coated nylon or polyethylene sheeting of at least 4 mil thickness to cover the structure or portion of the structure containing the space to be fumigated. Seal all seams between adjacent tarpaulins. Seal all edges of the tarpaulin that touch the ground or ground level surface to that surface with, for example, soil, sand or weighted snakes resting on the edge of the tarp. After tarping, make sure that all operable windows and interior doors of the fumigated space are open. Fumigant can be lost (and damage to plants outside the fumigated space around the exterior of a fumigated structure can occur) when it is able to penetrate the soil surface within the fumigated space adjacent to where the tarpaulins rest against the ground and move outward. This movement is retarded when the soil between the foundation of the structure and the outermost edge of the tarpaulin around the perimeter of the structure contains a high level of moisture. If soil around the foundation of the structure is not sufficiently moist to act as a barrier to fumigant movement, wet all soil between the foundation of the structure and the outermost edge of the tarpaulin around the perimeter of the structure and around the root zone of plants that may be potentially affected. Structure Fumigation Without Using a Tarpaulin For fumigated spaces or structures that can be adequately sealed against the excess movement of fumigant out of them without the use of a tarpaulin, seal adequately around exterior doors, windows, vents, fireplaces and other openings of the fumigated space. Use sealing materials and techniques proven to adequately retard the movement of fumigant out of a fumigated space such as tape and polyethylene sheeting. To minimize escape of fumigant through the soil and to avoid injury to nearby plants, wet soil (if not sufficiently moist) around the structure to act as a barrier to fumigant movement. Chamber Fumigation Fumigations with ZYTHOR may be conducted in permanent fumigation chambers enclosed within, or connected to, a larger structure. A permanent chamber is defined as a durable hard-walled structure engineered specifically for fumigation that effectively confines ZYTHOA. Monitor indoor areas around the permanent fumigation chamber for ZYTHOR concentrations with an approved and properly calibrated Low Fumigant Level Detection Device during the fumigation, especially during fumigant introduction. No one is permitted in areas where the concentration of fumigant in the air is greater than 1 ppm unless they are using an approved Respiratory Protection Device. Aerate ZYTHOR from the chamber by venting it directly to the outside of the structure using a ventilation system that does not release ZYTHOR into the structure within whiCh the chamber is located. Fumigation of Construction Materials, Furnishings (Household effects) and Vehicles Preparations should be as appropriate to the particular circumstances. Create a sufficiently gas tight seal that will adequately confine the fumigant to the fumigated space for the planned exposure period based on the directions for tarpaulin. non. tarpaulin and chamber fumigation above. If the sealed fumigant space is created within a larger structure (e.g., vehicle fumigated within a garage), the space within the entire structure should be considered fumigated space with respect to all requirements concerning preparation for fumigant introduction (except fumigant confinement and warning agent), structure entrance security. posting, evacuation. reentry. aeration and clearance. Stationary vehicles should be prepared and sealed following the instructions above. Vehicles, trucks, trailers, shipping containers, etc. may be fumigated with ZYTHOR, however all aeration/clearance procedures must be completed before these are transported or driven over public roads Fumigation of Surface Ships in Port Surtace ships in size up to and including large ocean-going ships may be fumigated with ZYTHOR to control the pests listed on this label. The applicator and the ship's captain (or owner) shall follow all applicable regulations including those contained in the Code of Federal Regulations, Title 46 - Shipping, Chapter 1 _ Coast Guard, Part 147A. Except for those persons involved in the fumigation, no people, plants. or pets may be on-board during fumigation. The person responsible for the fumigation must notify the master of the vessel, or his representative. of the requirements relating to the use of Respiratory Protection Devices and Low Fumigant Level Detection Devices. Emergency procedures, cargo ventilation, periodic monitoring, inspections and first aid measures must be discussed with and understood by the master of the vessel or his representative. If leakage of the fumigant is detected, the person in charge of the fumigation shall take action to correct the leakage, or shall inform the master of the vessel, or his representative. when appropriate. of the leakage in order that corrective action can be taken by them. Edible commodities, including food and feed. shall not be exposed to the fumigant. If they are not removed from the vessel they shall be protected from exposure to the fumigant. The vessel must not be moved during the period of time between initial fumigant application and final clearance Approved Respiratory Protection Devices must be worn during reentry into the fumigated space when reentry occurs between the time of initial fumigant application and final clearance and a concentration of more than 1 ppm of fumigant is detected in a breathing zone of the fumigated space during that period. 3