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Table 1: Population Extent & Density Ratings <br />I' <br />It <br />I <br />I' <br /> <br /> <br />Infestation Level No. of Plants per Population Population Rating <br />Light 1 to several 1 <br />Moderate Several to many 2 <br />Heavy Extensive number 3 <br />• Potential to Spread <br />A three-point system was used to rate each infested location's potential to spread. Three <br />spreading factors were considered, and each factor was rated with 1, 2 or 3 points. These <br />factors included the presence of water capable of carrying seed to new locations, the <br />potential to spread by wind or gravity (i.e., steep slopes), and the potential to spread by <br />vehicular traffic or mine operations (i.e., application of organic amendments, earth <br />movement, etc.}. <br />• Ability to Control <br />A three-point system was used to rate the ease of control at infested locations. Sites <br />where control can be easily implemented were rated 3. Sites where either water <br />resources (i.e., lentic or lotic water bodies) or desirable broad leaf plant species aze <br />present that represent impediments to expeditious control and require additional care in <br />implementation of eradication measures were rated 2. Infested sites where both water <br />and broadleaf plants were present were rated 1. The rating system was assigned as <br />indicated in Table 2. <br />' Habitat Management, Inc. <br />3 <br />12/20/05 <br /> <br />