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AU3 <br /> -25-1993 11:01 FROM PACE INCORPORATED TO 15105215078 P.02 <br /> I <br /> eg <br /> palc C 4 A 4 0 R 0. T E 4 <br /> THE ASSUTANCE of 4UALITT <br /> 1 <br /> August 23, 1993 <br /> Attention: Markus Niebanck <br /> Hydro-Environmental Technologies, Inc. <br /> 2363 Mariwr Square Drive, Suite 243 <br /> Alameda, CA 94501 <br /> RE : Project #430714.515: Di-n-Butylphthalaw present <br /> Dear Markus: <br /> Upon your request of Thursday, August 19th, we bave re examined the EPA Method <br /> 8274 data and found that the compound Di-n-ButylphdWate was present in the Method Blank <br /> and somc of the samples. This is a contminant introduced in,tl a laboratory during sample <br /> extraction as indicated by the method blank which contained approximately 2.5 times the <br /> Di-n-Butylphthalate concentration as the highest field sample. <br /> Please call me if you have any further questions. <br /> Sincerely, <br /> PACE, Inc. <br /> Ron Chew <br /> Project Manager <br /> RClmacn <br /> 1 <br /> I <br />{ <br /> C <br /> i <br /> 11 Digital Drive Offices Serving: IdnglOepok,M'mmota Cwtite,Nord)Carom An Equal QppmWity Emplayer <br /> Nave, CA 84949 Tampa,Florida Ash vk Nwdl Cm*m <br />} TEL:115.88E-81D4 Iowa City,lama Now,York,Nerr Turk <br /> I rAr, n,c"ooi 7a�e &-wfraida w.Ldifuniu Pinnburw f'ennaylvaria <br />