ARCHIVED REPORTS XR0005805 - Laserfiche WebLink

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custody fonn They are placed in ziplock bags and stored in a chest cooled to 4 °C with ice The preserved samples are COC (chain of custody) delivered to the chosen laboratory AVALYTICAL RESULTS TPH is the abbreviations used for Tota! Petroleum Hydrocarbons used by the laboratories for water and soil anal)ses The letter folloNving TPH indicates a particular distinction or grouping for the results The levers "g", "d", "k", or "o" indicate gasoline, diesel, kerosene, or oil, respectively, i e TPH-d for diesel ranges TPH BTEX or MTBE are acronyms or abbreviations used for Benzene, Toluene, Ethylbenzene and all of the Xylenes (BTEX) and Meth)1 tertiary-But)1 Ether(MTBE), respecti'%ely MBTEX is the designation for the combination of the above fi\e compounds TBA, DiPE, ETBE, and TAME are the acronyms used for tate o\ygenates t-butanol, di- isopropyl ether, ethyl-t-butyl ether, and t-am}]methyl ether, respects"ely Laboratory lover detection ]units unless othenis as folio dnote . s due to matrix. interference or elevated concentrations of target compounds are TPHg 50 ug/L MTBE 0 5 ug/L Benzene 0 5 ug/l- Toluene 0 ug/L Ethyl Benzene 0 5 ug/L Total Xylenes 2 0 ug/L The less than symbol, <, used with a "parts per value" indicates the lower detection limit for a given analytical result and the level, if present, of that particular analyte is below or less than that lower detection limit Other abbreviations commonly used are ppm, ppb, mg/Kg, ug/Kg, ml/1 and ul/1 are parts per million, parts per billion, milligrams per kilogram, micrograms per kilogram milliliters per liter, microliters per liter, respectn ely CHAIN OF CUSTODY DOCURZENTATION All water samples that are collected by NVEGE and transported to documentation certified analytical laboratory are accompanied by chain-of- custody (COC) documentation is used to record the mo-,ement and custody of a sample-frorrcollection d storage Samples to be anal)zed at the certified in the field to final analysis an laboratory were logged on the COC sheet mprovided the location, date, time,ame information provided on the sample labels (site names nP, analysis to be performed) is also noted on the COC form Each person relinquishing custody of the sample set signs the COC form indicating the date and time of the transfer to the recipient A copy of the COC follows the samples or their extracts throughout the laboratory to aid the analyst in identifying-the samples and to assure analysis within holding times Copies of the COC documentation are included with the laboratory results in Appendix C of the sampling report