Asample of blue gray soil was obtained from the seattle waterfront to determine its atterberg limits and classify it's soil type according to the unified soil classification system. for one of the pl determinations, the wet weight + dish = 22.24 grams and the dry weight + dish = 15.63 grams. the dish only weighed 5.72 grams. compute the plastic limit. three determinations of the liquid limit were made. for 17 blows, the water content was 89%; for 26 blows, the water content was 78%; and for 36 blows, the water content was 69%. the soil had no organics and contained 20% sand. evaluate the soil type, plot the plasticity information on a plasticity chart, and give the unified soil classification symbol.