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APPENDIX E <br /> VOLUME-MASS CALCULATIONS OF EXTRACTED GASOLINE HYDROCARBONS- SOIL VAPOR <br /> Canepa Car Wash Park -248 East Park Street, Stockton, California <br /> Assumptions: <br /> Utilizing field measurements collected during the DPE remediation (Table 1) and analytical data <br /> collected from soil vapor samples(Table 2), the volume of extracted gasoline hydrocarbons at the <br /> site can be approximated. <br /> Hydrocarbon mass removed during the DPE Pilot Test can be calculated using the following equation: <br /> M =C • Q • t <br /> Where: M =cumulative mass recovered (kg) <br /> C =TPH-g vapor concentration (kg/m') <br /> Q =extraction flow rate (M3/hr) <br /> t =operational period (hrs) <br /> The average inlet TPH-g concentration and average inlet flow rates during each time interval were utilized for calculating <br /> the approximate mass/volume of extracted gasoline hydrocarbons. <br /> C (TPH-g) Q t M <br /> Time Interval /I Average Average Flow <br /> (N9 ) (hours) (kg) (pounds) (gallons) <br /> (N /1) (kg/ml ft'/min) m'/hr <br /> 04/21/2011 - 11:30 0 900 0.0009 140 237.86 46.3 9.91 21.9 3.5 <br /> 04/25/2011- 15:30 1,800 <br /> 04/25/2011 - 15:30 1,800 <br /> 04/26/2011- 13:00 79,000 40,400 0.0404 150 254.85 22.5 231.66 510.7 81.7 <br /> 04/26/2011 - 13:00 79,000 73,500 0.0735 110 186.89 6.7 92.03 202.9 32.5 <br /> 04/27/2011 -09:00 68,000 <br /> 04/27/2011 -09:00 68,000 71,000 0.071 125 212.38 4.2 63.33 139.6 22.3 <br /> 04/27/2011 - 13:30 74,000 <br /> 04/27/2011 - 13:30 74,000 <br /> 78,000 0.078 120 203.88 19.3 306.92 676.6 108.3 <br /> 04/28/2011 - 08:45 82,000 <br /> 04/28/2011 -08:45 82,000 82,500 0.0825 122.5 208.13 5.4 92.72 204.4 32.7 <br /> 04/28/2011 - 13.45 83,000 <br /> 04/28/2011 - 13.45 83,000 64,500 0.0645 120 203.88 18 236.71 521.8 83.5 <br /> 04/29/2011 08:30 46,000 <br /> Total TPH-g Removed from Soil Vapor-DPE Pilot Test: 2,256.1 361.0 <br /> Notes: 58,686 0.05868571 21541 <br /> pg/I:micrograms per liter <br /> kg:kilograms <br /> m'/hr:cubic meters per hour <br /> kg/M3:kilograms per cubic meter <br /> ft3/min:cubic feet per minute <br /> hr:hours <br /> TPH-g:total petroleum hydrocarbons quantified as gasoline <br /> Advanced GeoEnvironmentni_Ine_ <br />