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VI. AQUATIC PLANTS : Yes No BAIPs <br /> Structures. <br /> 85 ) . Are ditches maintained to prevent aquatic plants from cloggingE1 - 3 <br /> discharLye structures ? <br /> 86 ) . are measures taken top revent floating vegetation from clogging 1.1E1 <br /> culvert riser structures? <br /> 87) . Are physical deterrents such as ribbon barriers , traps, or baffle boxes 1 El <br /> used to limit the movement of aquatic weeds and debris from canals <br /> and ditches to off- site waterways ? <br /> 88 ) . Are fish barriers used to contain grass carp within targeted ditches ? 11 Li E2 <br /> Strategies: <br /> 89) . Are mechanical harvesters used to remove aquatic weeds from L El <br /> ditches or canals ? <br /> 90) . Are biological control agents such as flea beetles, hyacinth weevils, 0 D E2 <br /> or grass carp used to manage aquatic weeds ? <br /> 91 ) . When selecting aquatic herbicides for target species is mode of 0 ❑ E3 <br /> action, residual toxicity, and potential for offsite movement considered ? <br /> 92) . Are appropriate measures taken to control drift and place the desired 17 u E3 <br /> chemical on the weed to be eliminated whether it is submersed , <br /> emergent or floating ? <br /> 9 <br />