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California <br /> WaterLabs abs <br /> % I Pov�x4z °ort CEnvironmental <br /> n ironmeM lSyst�?s.ln . SEP 2 1988 <br /> ENVIRONMENTAL HEALTH <br /> \ PERMIT/SERVICES <br /> September 20, 1988 <br /> Harlin Knoll <br /> Environmental Health <br /> P .O. Box 2009 <br /> Stockton, CA 95201 <br /> Dear Mr . Knoll : <br /> California water Labs currently uses the headspace methodology <br /> for the analysis of BTX in soil . Although the LUFT manual <br /> recommends method 8020 for the analysis of BTX, there are several <br /> analytical disadvantages which we feel compromise quality <br /> results . <br /> — - <br /> We would like the opportunity to discuss,--in person,- '- the re- -aa sonon <br /> s <br /> California water Labs feels headspace is superior to 8020 in the <br /> analysis of BTX. <br /> Sincerely, <br /> r� <br /> Paul Ehrmann <br /> PE/do <br />