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(2) A "patch" of any listed species in which the noxious weed component exceeds 25% <br />relative cover and occupies an area larger than 100 square feet on any disturbed <br />area. <br />Upon notifying the operator that a noxious weed problem does exist, it will be the operator's <br />responsibility to implement control measures. <br />IV. The following plants are considered to be noxious weeds for the purposes of this guideline <br />and the Coal Regulations. <br />Common Name <br />A. Leafy spurge <br />B. Canada thistle <br />C. Musk thistle <br />D. Plumeless thistle <br />E. Scotch thistle <br />F. Perennial Sow thistle <br />G. Russian knapweed <br />H. Spotted knapweed <br />I. Diffuse knapweed <br />J. Yellow toad flax <br />K. Dalmation toad flax <br />L. Hoary cress (white top) <br />M. Field bindweed <br />Scientific Name <br />Euphorbia esula <br />Cirsium arvense <br />Carduus nutans <br />C. acanthoides <br />Onopordum acanthium <br />Sonchus arvensis <br />Centaurea repens <br />Centaurea maculosa <br />Centaurea diffuses <br />Linaria vulgaris <br />L. genistifolia dalmatica <br />or L. dalmatica macedonia <br />Cardaria drabs <br />Convolvulus arvensis <br />-4- <br />