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measurea externaily by a thermocouple probe ineld tigntly between two samples) and <br /> recorded The laboratory QC numoers will be placed on ine labels in the accession log, <br /> and on the chalrn-or-custody form li samples are aclo,f,ed their pH will be measured by <br /> narrow range pH paper at the time or opening for analysis All comments concerning <br /> procedures requiring hanahng or the samples ill be dated ano initialed on the form by <br /> the laboratory person perrorming the procedure A copy or the completed <br /> chain-ot-custody form with the comments on sample integrity will be returned to the <br /> sampler <br /> i <br />• <br /> CONCORO.SOP 12MI Pp.2 at 2 <br /> _ GROUNDWATER <br /> � TECHNOLOGY INC <br />