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r� 2 <br /> a. <br /> F <br /> a <br /> 2. Septic Tank is completely full of liquid, i.e.,this tank contains 6,055 liters of liquid <br /> � 1.4 x 1 0 rams ..6 }(1 x l0-grams s liters of water � grams _ <br /> 3. i.0�g11 = 1.4 ppm(mass) [{1.0 liter of water}( gram gram ) 1 x 14= billion grams — 1.0 ppb(mass) <br /> m <br /> N <br /> µgramsa milligrams <br /> )(1.0 x 10- ){tank volume in liters} = milligrams of chemical in the tank = mg of chemical in the tank <br /> liter µgrams <br /> U <br /> a 5. 1.0 milliliters = 1.0 ml = 1.0 cm3 = 1.0 cc <br /> (mg of chemical)(lx 10-3 grams) <br /> 6' <br /> mg = milliliters of chemical in the tank = ml of chemical in the tank <br /> density in grams <br /> cc <br /> 7. 1.0 ml = 0.203 teaspoons <br /> M <br /> r- <br /> 14- <br /> 0) <br /> CONCLUSIONS: <br /> N <br /> 1. The quantity of vehicle gasoline in this septic tank is so insignificantly small(a total of 1.222 equivalent teaspoons of gasoline) that I. <br /> do not believe anything additional needs to be done. I certainly do not believe that the tank needs to be pumped,nor do I believer that <br /> monitoring wells need to be installed in the septic tank's leach field. With regard to the total organics in this tank(gasoline+acetone), <br /> z the tank contains an equivalent of only 1.372 teaspoons of organics. Expressed as a percentage of the tank's total volume,this <br /> o amounts to only 0.000112%of the total tank volume. <br /> a. 2. In the event that the tank is found to be less than 100°lo full of liquid•-i.e., if it contains less than 6,456 liters of liquid—then the <br /> equivalent amount of organics will be proportionally less by the fractional level to which the tank is actually filled. For example,if <br /> there were only 2,000 liters of liquid in this tank(approximately 33%of its capacity) then the equivalent amount of organics in it would <br /> be this fraction multiplied by the 1.372 teaspoons. On the assumption that the tank actually does contain only 2,000 liters of liquid, <br /> then the total volume of organics in it would be 0.453 teaspoons! <br /> Q In the event you have any questions on any of these calculations, determinations,or conclusions please do not hesitate to call me. <br /> Q <br /> o Edward W.Finucane,PE,CSP,QEP,CIH <br /> LO <br /> -C <br /> U <br /> N <br /> H <br /> S <br /> E <br /> O <br /> ry <br /> l�. <br />