Laserfiche WebLink
10/14/2002 14:40 2094571118 AGE STOCKTON PAGE 03 <br /> Calculation of Adsorbed Mass of Contaminants (soul) <br /> thicimess x area=volume <br /> volimle x density= total mass of soil <br /> total puss of soil x concentration=inass of contarninants <br /> Density of soil= 1-5 K/crr? (approximately 1.26 tons/yard) <br /> Pre-remediation <br /> 0'to 18' (clay and sandy clay)sanVIes Lint 1 @ 6', 131-15' alnd VEI-15'. <br /> 18'to 38' (clayey gravel) samples VE 1- 25', 132-20' and 132-25'. <br /> 38' to 55' (sand) samples B1-45'and VE-40' <br /> Post-Remediation <br /> 0'to 20' (clay and sandy clay)san-jples CBI-5, CBI-10, C131.-15, CB2-5, C132-10, C132-15 <br /> 20' to 40' (clayey gravel) samples CBI-20, CB1-25, C131-30, 031-35, CB2-20, CB2-25, C132-30, CB2-35 <br /> 40' to 55' (sand) sa17VIes CBI-40, C131-45, CBI-50, CBI-55 <br /> Pre-relmdiation: <br /> Example Calculation, Laycr I-bcmme <br /> 18 feet x 0.3048 m/ft= 5.4 nneters tj-delness <br /> 6.7 m x 8 nawide x 8 rn length = 4301x1'volume <br /> 4.3 x 105 crn'volume <br /> 4.3 x 10" cn- x 1.5g/cn-n = 6.4 x 10 1 grams of soil <br /> = 6.4 x 10'kg soil <br /> 6.4 x 10'kg of soil x 96 mg/kg(benzene) = 6.2 x 10 7 mg of benzene=62 kg of benzene <br /> Example Calculation, Layer 2 -benzene <br /> 20 feet x 0.3048 m/#}= 6.1 rneters thiclaiess <br /> 6.1 in x 8 rn wide x 8 x17,length = 390&voltune <br /> 3.9 x 10s cm' voliu-ne <br /> 3.9 x 109 cmx I.Sg/crrr = 5.85 x 10 ' grarm of,soil <br /> =5.85 x 10' lig soil <br /> 5.85 x 10'kg of soil x 11 tngfkg(benzene) = 6.4 x 10 nig of benzene= 6.4 kg of benzene <br /> Exan-ple Calculation, Layer 3 -benzene <br /> 17 feet x 0.3048 ni/ft 5.2 meters thiclniess <br /> 5.2 m x 8 i-n wide x 8 m lcngth = 333uvolwnc <br /> = 3.3 x 10 9 cm vohunle <br /> 3.3 x 10 8 cn7 x 1.5g/cni = 5.0 x 10 s gran7s of soil <br />............ ... . <br /> =5.0 x 10' kg soil <br /> 5.0 x 10 k of soil x 0.04 i erizene = a <br /> g "g (b _.1,9 x 10 ixlg ol'betazetie'�-0.019 kg of'bexlzene -- <br /> i <br />