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Jeff Granberry —Pismo <br /> September 26, 1995 ( 9447-8620) w <br /> An estimate of the TPH-G and BTEX contained 1n the soil and removed from the site was <br /> made using a simple calculation The mass of impacted soil removed from the zones was <br /> estimated by multiplying the impacted volume by the soil density Then, by multiplying the <br /> impacted soil mass by the arithmetic average of the concentrations in the particular zone, the <br /> amounts of the various constituents can be estimated Approximately 1,106 gallons of petroleum <br /> hydrocarbons were removed from the site with the excavated soil The following table shows <br /> the calculated volume of petroleum hydrocarbons removed from the site by overexcavatlon <br /> Table B <br /> Petmleum Hydrocarbon - MAss RLMOVCtf With S011 <br /> Impacted Soil Average Petroleum Hydrocarbon Petroleum Hydrocarbons <br /> Concentrations 'glass Removed Removed <br /> Zone VolumeT(lb7X <br /> s TPHg 3 TPH& BTE% TPHg BTEX <br /> (ft) 000) (mg/kg) (mg/kg) (lbs) (Ibs) (gal) (gal) <br /> 1 8,448 1 014 5,392 943 5 467 956 90663 15954 <br /> 2 4,795 575 03 002 02 001 003 0 002 <br /> 3 9,720 1,166 212 14 247 162 4096 027 <br /> Total 23,023 1 2,763 --- --- 5 714 958 94762 15881 11 <br /> 4.4 Tot-,d Petroleum Hydrociutbons Removed Dunng Site Mitigation <br /> The calculated volume of petroleum hydrocarbons removed from the site using free <br /> product removal and soil vapor extraction is approximately 2,720 gallons while approximately <br /> 1,106 gallons of petroleum hydrocarbons were removed from the site with the excavated soil <br /> Based on the above, an approximate cumulative total of 3,826 gallons of petroleum hydrocarbons <br /> have been removed from the site using various remedial measures <br /> • <br /> 94478620 ARP 11 - <br />