Laserfiche WebLink
APPENDIX G <br /> TPH-G IMPACTED SOIL - VOLUME ASSUMPTIONS AND CALCULATIONS <br />' LODI THEATER PROJECT <br /> 107 North School Street, Lodi, California <br /> Assumptions <br /> Based on Figures#and the volume of TPH-gasoline impacted soil at the site can be approximated as follows <br /> Volume of remaining TPH-gasoline-impacted soil <br /> Volume A TPH-gasoline-impacted soil at 20 feet bsg with concentrations of 250 milligrams per kilogram <br /> (mglkg) <br /> Lateral extent of remaining impacted soil � 30 feet wide <br /> Average thickness of remaining impacted soil = 5 feet <br />' Approximate volume of impacted soil=3,534 3 ft'=130 9 yd' <br /> Volume B TPH-gasolme-impacted soil at 50 to 55 feet bsg with concentrations of 7 6 mg/kg <br />' Lateral extent of remaining impacted soil = 30 feet wide <br /> Averatze thickness of remaining impacted soil =_5 feet <br /> Approximate volume of impacted soil=3,534 3 W=130 9 yd <br /> Calculations <br /> The average TPH-gasolme concentration was estimated by averaging the TPH-g concentrations detected in analyzed <br /> soil samples collected from near the former UST area The following soil samples and respective concentrations <br /> were used <br />' Volume A <br /> Average of sample collected at 20 feet bsg from boring B101 and B 102-250 mg/kg <br />' The calculated average TPH-g concentration was 250 mg/kg, which is equivalent to 0 00025 grams/grams <br /> Converting 130.9 yd'of petroleum hydrocarbon-impacted soil to cubic centimeters(cm)(i e 1 yd'= <br />' 764,555cm3)yields approximately 100,080,249 cm3 Using 1 5 g/cm3 as the weight of soil, the total weight <br /> of contaminated soil is approximately 150,l 20,374 g <br /> Using 0 00025 g/g as the"average"concentration of TPH-g in soil, the volume of TPH-g is <br /> 1 weight of soil•average TPH-g concentration -1 150,120,374 g •0 0025 g/g=37,530 g TPH-g <br /> 37 5 kilograms of TPH-g <br />' 82 7 pounds of TPH-g(converting kg to Lbs 2 2046 Ib/kg) <br /> 1 <br /> Advanced GeoEnvironmental,Inc <br />