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High TEch ENTERPRISES <br /> metabolism in the human body. Considering all these factors, and since the established PEL{TWA} <br /> for acetone on a mass basis is roughly 21,200 times greater than the level found to have been present <br /> in the Miller's septic tank, I was not too alarmed about the hazard level that this material posed to the <br /> water table. Not so Mr. Infuma. He emphasised the point that even 1 Vg/1 should set off all kinds <br /> of alarms. <br /> I still believe that somewhere there must be a permissible concentration level standard for acetone--as <br /> well as for every other chemical —a concentration Ievel that in a septic tank has been determined to be <br /> non-hazardous. It is this sort of a hard number for all the chemicals that EPA Procedure 8260B can <br /> quantify that I am seeking, and will hopefully find. <br /> Thank you for your help in this matter. <br /> Sincerely, { <br /> Edward W.Finucane, PE, QEF, CSP, CIH <br /> EWF:gwf <br /> xc: Alan Biedermann, R. E. H. S. <br /> San Joaquin County Environmental Health Department <br /> ]Mike Infuma, Senior R. E. H. S. <br /> Environmental Health Department <br /> 1 . <br /> 4 <br /> 2 <br />