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13 Chill samples immediately Samples to be stored should be kept at 4°C (W F) Samples <br /> received at the laboratory above 1 d'C (as measured at glass surface by a thermocouple <br /> probe), after overnight shipping will be considered substandard, so use a high qualrty cooler <br />' with sufficient Ice or freezer packs (Coolers are available from GTEL) <br /> 14 Fill out Chain of Custody and Analysis Request form (See Chain of Custody Procedures SOP <br /> 11 ) <br /> 1 <br /> SOP 10 Page 3 of 3 <br /> �i GROUNDWATER <br /> �'�TECHNOLOGY, INC <br />