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' PRE-REMEDIATION MASS CALCULATIONS <br /> 1• Depth Diameter* Volume Mass Calculations <br /> Interval* (Cubic Yards) <br /> 89 3 yd' <br /> ' 2-10 22-10 893 @ 1,000 ppm <br /> 124 93 kg <br /> 1309yd' <br /> 10-15 30 1309 @ 1,500 ppm <br /> 274 69 kg <br /> 168 1 yd' <br /> 15-20 34 168 1 @ 3,500 ppm <br /> 823 10 kg <br /> ' 58 18 yd' <br /> 20-25 36 1885 @ 2,700 ppm <br /> 219 76 kg <br /> ' 58 18 yd' <br /> 25-30 37 199 1 344 7 yd' 290 9 yd' @ 2,700 ppm <br /> 21976 kg <br /> @ 50 ppm @ 1,000 ppm <br /> 58 18 yd' <br /> 30-35 37 1991 24 11 kg 406 97 kg @ 2,500 ppm <br /> lie162 78 kg <br /> 58 18 yd' <br /> 35-40 44 281 6 @ 5,000 ppm <br />' 406 97 kg <br /> 582yd' <br /> 40-45 59 5063 354 2 yd' @ 1,000 ppm <br /> @ 1,300 ppm 9142 kg <br /> 708 4 yd' 644 1 8k <br />' 45-50 64 5957 @ 200 ppm <br /> 116 4 yd <br /> 198 21 kg 354 2 yd' @ 2,500 ppm <br /> @ 200 ppm 407 11 kg <br />' 50-55 58 4893 99 11 kg <br /> 55-60 41 2445 <br /> 290 1 yd' <br /> @ 50 ppm <br />' 60-62 28 456 20 29 kg <br />' ' Linear measurements in feet <br /> yd3 Soll volume m cubic%ands <br /> P* <br /> hydrocarbon concentration in parts per million <br /> kg Mass of hydrocarbons in Kilograms <br /> 1 <br />