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Table 2 Geosyntec Consultants <br /> Guidelines for Sample Handling and Storage <br /> Port of Stockton <br /> Stockton, California <br /> Analyte Container Holding Time Preservative <br /> 0-6°C; 2 aliquots preserved <br /> in water/sodium bisulfate <br /> VOCs &TPH as Terra Core 14 days solution for low level <br /> gasoline analysis and 1 aliquot <br /> preserved in methanol for <br /> high level analysis <br /> TPH as diesel brass,or stainless steel sleeves 40 days 0-6°C <br /> with Teflon-lined closures <br /> Notes: <br /> °C: degrees Celsius <br /> TPH: total petroleum hydrocarbons <br /> VOC: volatile organic compound <br /> Page 1 of 1 January 2019 <br />