m. Miscellaneous. The observer's name and the LEO site name are recorded 

 in the spaces provided at the bottom of the form. A remarks section is also 

 provided for the observer to note any unusual occurrences, such as waves 

 approaching the shore from more than one direction or a significant amount of 

 erosion which occurred recently. 



When required, sand samples at a LEO site are collected from the foreshore 

 slope once a month (Fig. 20). The sample should be taken from the swash zone 

 where the sand has been wetted by the wave uprush. A 4- by 4-inch zip-lock 

 bag full of sand is sufficient for analysis. Identification tags with the 

 recorded beach name, site number, date, and time of sampling are affixed to 

 the sandbags. 



Figure 20. Observer collecting sand sample from foreshore slope. 



III. SUMMARY 



The LEO Program can provide reasonably reliable wind, wave, and nearshore 

 current data, useful not only for estimating longshore sand movement but also 

 for the preliminary design of coastal projects, if observers conscientiously 

 obtain measurements in accordance with established techniques. Individual 

 observations may deviate from actual conditions; however, when considered 

 statistically, LEO data can give a very good general picture of the physical 

 environment at a site. In applying the data, careful consideration should be 

 given to its limitations; when used with reasonable caution, the data can 

 provide information not usually available from other sources and at low cost. 



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