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. Collection of Water Sample for Analysis The well is allowed to recover after purging and a groundwater sample is collected A fresh bailer as used to collect enough water for the requirements of the laboratory for the analyses needed or required The water samples are decanted from the bailer into the appropriate number and size containers These containers are furnished pre -cleaned to exact EPA protocols, with and without preservatives added, by the analytical laboratory or a chemical supply company The bottles are filled, with no headspace, and then capped with plastic caps with teflon liners The vials or bottles containing the groundwater samples are labeled with site name, station, date, time, sampler, and analyses to be performed, and documented on a chain of custody form They were placed in zzplock bags and stored in a chest cooled to 4°C with ice The preserved samples are chain of custody delivered to the chosen laboratory Analytical Results TPH is the abbreviations used for Total Petroleum Hydrocarbons used by the laboratories for water and soil analyses . The letter following TPH indicates a particular distinction or grouping for the results The letters "g" , "'d" , '"k or ""o'" indicate gasoline, diesel, kerosene, or oil, respectively, ie TPH-d for diesel range TPH. BTEX or MTBE are acronyms or abbreviations used for Benzene, Toluene, Ethylbenzene and all of the Xylenes (BTEX) and Methyl Tertiary Butyl Ether (MTBE) , respectively MBTEX is the designation for the combination of the above five compounds 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/l and ul/l are parts per million, parts per billion, milligrams per kilogram, micrograms per kilogram, milliliters per liter, microliters per liter, respectivzly Chain of Custody Documentation All water samples that are collected by WEGE and transported to a certified analytical laboratory are accompanied by chain-of- custody (COC) documentation This documentation is used to record the movement and custody of a sample from collection in the field to final analysis and storage Samples to be analyzed at the certified laboratory were logged on the COC sheet provided by the laboratory The same information provided on the sample 2 R603 APPEND. D