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Attachment 4
<br /> Mass of Hydrocarbons Calculation in Soil
<br /> Bames Trucking Facility
<br /> 1817 South Fresno Avenue -
<br /> Stockton, Cam mia
<br /> Clearwater Project# ZB 178
<br /> Benzene - Al
<br /> Area within estimated 26.0 mg/kg average contour (From Figure D(a)) = 1,600 ft=
<br /> - Volume of Soil within estimated 26.0 mg/kg average contour area
<br /> 1,600 fe x 10 ft (thickness of horizontal contamination)
<br /> 16,000 ft'
<br /> Is of soil in 163000 ft' _ 16,000 ft' x 95lbs t,520,000 lb:
<br /> -
<br /> Is of soil x concentration = 1,520,000 lbs x 26.0 mg/kg x 0.454 kg/lb x 1 kg/1,000,000 mg
<br /> lbs of Benzene under estimated 26 mg/kg (average contour area) = 18 kg (or) 40 lbs estimated
<br /> Total Benzene affected soil = 40 His or 6.4 gallons estimated
<br /> Benzene - A2
<br /> - Area within estimated 4.1 mg/kg average contour (From Figure D(a)) = 3,000 ftz
<br /> - Volume of Soil within estimated 4. 1 mg/kg average contour area
<br /> 3,000 ltz x 10 it (thickness of horizontal contamination)
<br /> = 30,000 ft'
<br /> 95 lbs
<br /> lbs of soil in 30,000 ft' _ 30,000 ft' x ft' = 1,850,000 lb
<br /> - lbs of soil x concentration = 2,850,000 lbs x 4.1 mg/kg x 0.454 kg/lb x 1 kg/1,000,000 mg
<br /> - lbs of Benzene under estimated 4. 1 mg/kg (average contour area) = 12 kg (or) 26 lbs estimated
<br /> 1
<br /> Total Benzene affected soil = 12 lbs or 2 gallons estimated - --
<br /> Total Benzene Mass - 52 11n; or 8.5 gallons estimated
<br /> TPH-e - Al
<br /> Area within estimated 350 mg/kg average contour (From Figure D(d)) = 5,000 f?
<br /> - o ume o So01wrthm`esftm`a�d350 mg/kg average contour area
<br /> 5,000 ft2x 10 ft (thickness of horizontal contamination)
<br /> = 50,000 ft3
<br /> 95 lbs
<br /> lbs of soil in 50,000 ft3 _ 50,000 ft' x ft3 = 1,750,00016:
<br /> lbs of soil x concentration = 4,750,000 Is x 350 mg/kg x 0.454 kg/lb x 1 kg/1 ,000,000 mg
<br /> - lbs of TPH-g under estimated 350 mg/kg (average contour area) = 755 kg (or) 1,661 lbs estimated
<br /> Total TPH-g affected soil = 1,661 lbs or 268 gallons estimated
<br /> TPA-e - A2
<br /> - Area within estimated 510 mg/kg average contour (From Figure D(d)) = 3,300 fe
<br /> Volume of Soil within esfimated 510 mg/kg average contour area
<br /> = 3,300 ft2 x 10 ft (thickness of horizontal contamination)
<br /> = 33,000 ft'
<br /> 95 lbs
<br /> lbs of soil in 33,0008' _ 333000 ft' x ft3 = 5,135,00016
<br /> -
<br /> Is of soil x concentration = 3,135,000 lbs x 510 mg/kg x 0.454 kg/lb x I kg/1,000,000 mg
<br /> - lbs of TPH-g under estimated 510 mg/kg (average contour area) = 727 kg (or) 1,600 lbs estimated
<br /> i.
<br /> Total TPH-g affected sail = 1,600 lbs or 258 gallons estimated
<br /> ZB178 Total TPH-g Mass - 3,261 lbs or 526 gallons estimated 3/5/20111
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