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NELSON READY MIX <br /> Report of Contaminated Soils Excavation <br /> Page: 4 <br /> CALCULATED WEIGHT OF DIESEL PRESENT IN EXCAVATION <br /> BASED ON DRILL LOGS AND SAMPLE RESULTS SUPPLIED BY WRIGHT ENVIRONMENTAL <br /> Weight of Soil is taken to be 110 lbs per cubic foot, moist <br /> ' Damp Weight of Diesel Wt <br /> CELL Width Length Depth Vol Weight(lbs) PPM Diesel Diesel (lbs) cut <br /> A 20 12 75 1800 198000 1100 2178 1089 <br /> ' B 20 12 75 1800 198000 NA <br /> C 1 20 26 75 3900 429000 ND __-___ ------- <br /> D 20 12 5 1200 132000 2500 330 330 <br /> E 20 12 5 1200 132000 4100 541 2 541 2 <br /> ' F 20 26 5 2600 286000 1700 486 2 320 892 <br /> G 20 12 5 1200 132000 5400 7128 7128 <br /> H 20 12 5 1200 132000 8800 11616 1161 6 <br /> ' 1 20 26 5 2600 286000 6000 1716 1201 2 <br /> CALCULATED TOTALS 17500 1925000 51656 4376 592 <br /> CALCULATED WEIGHT OF DIESEL IN EXCAVATED SOIL <br /> ' Weight of loose Soil is Taken to be 88 lbs per cubic foot moist <br /> Damp Weight of <br /> PILE Volume(ft3) Weight(lbs) PPM Diesel Diesel (lbs) <br /> Pile 1 3960 348480 55 191664 <br /> Pile 2 7200 633600 2535 1606 176 <br /> Pile 3 2475 217800 4300 93654 <br /> ' Pile 4 1800 158400 1700 26928 <br /> Pile 5 2700 237600 1200 285 12 <br /> Pile 6 1800 158400 1600 253 44 <br /> ' CALC TOTALS 19935 1754280 133697224 <br /> The 15' Table (Calculated Weight of Diesel Present in Excavation) gives the weight of <br /> diesel expected to be removed based upon the values returned by the samples taken by <br /> Wright Environmental services The "Cells" used in the calculations are shown on Figure <br /> ' 3, adapted from Wright Environmental Services Each sample value is assigned to a <br /> specific "Cell' or volume of influence Cells B and C are omitted Cell B because of lack <br /> of data and its apparent location outside of the contamination plume and Cell C because <br /> no contamination was detected The total weight of diesel calculated for Cells A, F and I <br /> were cut due to the contamination plume affecting only a part of each Cell The total <br /> value for Cell A was cut to 50% of the total calculated value, Cell B was cut to 66% and <br /> ' Cell C was cut to 70% The apparent, total weight of diesel present in place then becomes <br /> 4377 lbs <br /> ' The 2nd table (Calculated Weight of Diesel in Excavated Soil) gives the weight of diesel <br /> present in the soils excavated, and in the piles on the surface The density of the loose <br /> soils is taken to be 88 lbs /cubic foot The samples were run as 2 to 1 samples Sample <br /> values are given in the table of Petroleum Sample Results and the locations of the samples <br /> 1 <br />