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Addendum I to Agreement between Ramsey County Public Works and Grass Lake Watershed <br />Management Organization <br />Ramsey County Environmental Resources will conduct a macrophyte survey(s) on Lake <br />Wabasso. The point intercept method incorporating a Global Positioning System (GPS) will be <br />used to assess the aquatic macrophyte communty on Wabasso Lake on June 13" 2011. A <br />second survey may also be conducted on or about August 1 se 2011 if there will not be a conflict <br />with aquatic vegetation control applications. The GLWMO will determine whether to proceed <br />with the August Is, 2011 survey. Samples will be taken at evenly spaced (70 m) geo- referenced <br />points within the littoral area of the lake. Data on depth, plant species, and abundance rank will <br />be recorded. <br />A double -tined metal rake attached to a rope will be used to collect specimens. At each point the <br />device will be thrown out approximately 1 meter and then dragged across the substrate for <br />approximately I meter. Species will be identified and given a ranking based on cover of rake <br />tines. Plant species that were floating in the water at the collection points will also be counted. <br />The table below includes the ranking system. <br />Percent Cover of Tines <br />Abundance Ranking <br />81 -100 <br />5 <br />61 -80 <br />4 <br />41-660 <br />3 <br />21-40 <br />2 <br />1 -20 <br />I <br />This data will be used to create a technical report(s) which discusses the findings of the survey <br />any changes seen in the lake's macrophyte community since the previous surveys. The June, <br />2011 survey report will be completed and submitted to GLWMO no later than July 15th, 2011. If <br />the August, 2011 Lake Wabasso survey is completed, a report will be submitted to GLWMO by <br />September 1, 2011. The cost for each survey /report performed wilt be $982.85 for Wabasso <br />Lake. <br />2011 Aquatic Plant Suney contract 4 of 4 <br />