Application for the Reassessment of a Hazardous Substance under ...

3.8.4 In the application for the DDVP Insecticide Strip (Use Scenario 31 - HSR04011), itwas stated:“MAF have a specification for the surveillance for fruit flies including the fieldoperation of traps. The contractor must comply with this specification. Appendix A,Section 6. Fruit fly traps are usually set up from late August in northern NewZealand and later in the year further south as the temperatures increase. The trapsremain in place until June of the following year. The trap is a plastic containertypically 85 mm in diameter at base, 105 mm diameter at top and 100 mm deep. Theremovable lid is 110 mm in diameter. The base of the trap has four small drainageholes (2.5mm diameter) directly below the fruit fly entry holes. The four fruit flyentry holes are located 15 mm below the lip of the trap; these holes are 25 mm indiameter. Appendix A, Section 6 The lure traps contain one of three synthetic maleattractants. The choice of lure is specific to a species of fruit fly. The DDVPINSECTICIDE STRIP is positioned below the lure in the bottom of the trap. Thetraps are recommended to be placed either 400 or 1200 metres apart (one to 6.25traps per km 2 ) depending on the type of lure. The traps are placed in potential hostplants, ideally well foliaged and trees bearing fruit. Most importantly traps are nothung below foliage and no closer than 1.3 metres to the ground. If there is more thanone trap on a property then these are not placed in the same tree and must be at least3 metres apart. The property owner / occupier receives a letter and is briefed on thematerial used in the traps and is requested to report any interference or damage tothe trap to a freephone number operated by the contractor. Appendix 9. Each trap isinspected two weekly and the DDVP INSECTICIDE STRIP is replaced 6-weekly.Replacement of the lure is 6 or 12-weekly depending on the type of lure. Proceduresare followed to ensure lures are not mixed and that there is no contamination oftraps nor of the area around the trap. In the event of a trap being blown from thehost tree then the DDVP INSECTICIDE STRIP must be recovered and disposed ofsafely. The contractor is required to wear gloves and to use tweezers when handlingthe lures or DDVP INSECTICIDE STRIP. Traps are replaced if damaged orautomatically at the end of each season.”“ The trap operators setting up the fruit fly trapping stations are not expected tohave > 10 kg DDVP INSECTICIDE STRIPS (equivalent to 800 sachets) under theircontrol at any time. The largest trap run in Auckland comprises 45 traps, thereforethe season’s total requirement for this single run is 315 strips. Auckland runs areserviced from the Agriquality laboratory at Lynfield, and while an operator mayservice up to one and a half runs on a day (weather constraints) the maximumnumber of strips and operator would have in a vehicle at one time is about 90 (