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Mass _m TPHg _ _ TPHd 'Benzene <br /> kg CY kg lbs: , galkg € 116is _. _ gal `kg. lbs gal <br /> Excavated Soil -. 228,168 215 122.0 269 44.7 52.5 116 -15.8 =1-.32 2.9` 0.39 <br /> Remaining Soil A80,180 170 :2:36 52 d 0.86 + 3.99' 8.87 1.20 1 0.027: 0.06 0:008 <br /> %Reduction 55.9%.: _98.1%-. 92.9% 9 80% <br /> Kg: Kilograms. <br /> CY: Cubic yards. Conversion based on 27 ft'/CY.a— -- <br /> 'Lbs: Pounds. - -- <br /> Gal: Gallons. Conversion based on estimated weights of 45 lbs/ft3-for TPHg, 55 lbs/ft3 for TPHd, 56 lbs/ft3 for benzene.: <br /> Review of the table above suggests a volumetric decrease in contaminated soil of approximately 56% <br /> (i.e...approximately-56%Tof-the impacted soil was excavated). The average overall `decrease in <br /> contaminant mass was approximately 961/o, suggesting that the excavation operations successfully <br /> targeted the soil with the highest concentrations of contamination. Additionally, the large reductions . <br /> ..May also be attributable,-in part, to_natural biodegradation of the contaminants over time. r- <br /> Should you have any questions or need additional information, please feel free to call.-. <br /> -Respectfully, rl} �i <br /> x _ VE. <br /> 0� <br /> .JJW GEOSCIENCES Inc: 4 ,��f�. p0 � F_D � <br /> '0 <br /> ' �n <br /> (�o C054922 Dan-tel D. Do"l <br /> Ex <br /> p: _-K� 9 f �99 H <br /> Daniel D. Dottal P E., R.G., R E.A.l x� NO. 8585 <br /> 21 C101 <br /> OF CP►L�� 0Q- <br /> - ddd:c:lwinwordldddllefterslcalweldl...wpd_^ <br /> v <br /> JJW GEOSCIENCES Inc. <br />