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Jun 24 05 07: 47a RA'' Enviro 1 925 277 1781 p. 4 <br /> low 1%W <br /> TABLE <br /> HYDROCARBON MASS CALCULATIONS <br /> Central Califomia Traction Company <br /> 1645 Cherokee Lane,Stockton,CA 85205 <br /> Avera"Comenttation of TPHas-Diesel within int cted soil hots <br /> ID TPH-as-a:ese► <br /> UST pit sant west 0.5 <br /> UST pit sample east 8.000 <br /> B1-10 22.000 <br /> B1-15 8.000 <br /> 81,20 1,400 <br /> 197-25 4,400 <br /> 81.30 2.000 <br /> 81-35 4,d00 <br /> 81-40 2.000 <br /> 05-10 19 <br /> 85-15 0.5 <br /> BS-20 1.1 <br /> BS-25 1,800 <br /> 8530 3,200 <br /> 811.5 0.5 <br /> 611-10 0.5 <br /> 811-15 0,5 <br /> 811,20 2.700 <br /> 811,25 4„300 <br /> 811.30 4,9 <br /> 81135 13 <br /> 811.40 0.5 <br /> B11.45 0.5 <br /> Average Hotspot Concentration <br /> (ppm) 2,715 <br /> Mass Calculation: <br /> Maw(ba)=Volume of sail(ft)x 110 66 soil x Awfsge Comentrafioni ft'soil x I CP lb soil <br /> CkWoft or diesel=MM(0)0.6 owpoon <br /> TPH-as-Diesel <br /> Mass(lbs)= 5263 <br /> Gallons= 775 <br /> Assumptions: <br /> Concentrations for TOM Petruleurn Hydroembons(TPN)as diesel are pens per metier(ppm), <br /> Non Detect(ND)results are titled a9 one half d rrorard reporting limits(0.5 ppm for TPH-d) <br /> Votunee of impacted soil is oor&eroat&"eaumaead as shown on attached figures <br /> knpaaed hoepeot sea volwy*=1 a fest W 28 leve by 45 reef seep=17,W cubic feet <br /> Petrolaxn Hydroewbvns are uniformly distributed wilhin vokxw of intoac ted WA <br /> Soil darruity=110 lWoubse foot <br /> One gallon of Diesel is approximately 6.8 pounds <br /> 1 milligrarn/kibgram(mg/kg)=1 ppm=1 pound of contaminent per 1 million pounds of soil <br />