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14 Mon1torfnQ Well_Develoapment <br /> If monitoring wells are installed, each monitoring well will be developed after construction by bailing <br /> with a dedicated, laboratory-cleaned teflon bailer until the v.-mer produced is relatively sediment free or <br /> until measurements of pH,specific conductance,and temperature stabilize, If the well is bailed dry during <br /> the development process,recharge rates was recorded. No water or chemicals will be introduced into the <br /> monitoring wells during well. development. <br /> 1.5 Ground•Wytof Samollnt! <br /> Following well development, a liquid sample was collected from each well with the same teflon bailer <br /> used to develop the well. Each sample was appropriately labeled and stared on ice from the time of <br /> collection through the time of delivery to the laboratory. <br /> 2.0 ANALYTICAL PRQCEDURFN <br /> All soil samples submitted to the laboratory were analyzed by EPA Method 8020 for benzene, tgluene, <br /> ethylbenzene, and xylene (BTEX), and by U.S. l ttvironmental Protection Agency (EPA) Method 8015 <br /> modified for total purgeable hydrocarbons(TPH). All ground water samples submitted to the laboratory <br /> were analyzed by EPA Method 602 for BTEX and EPA Method 8015 modified for TPH. <br /> 3.0 91MU TY ASSURANCE PIAN <br /> This item describes the field and analytical procedures to be followed throughout the investigation. <br /> 11 Genewl .9am2le Collection aDAyapdilrlg Procedures <br /> Proper collection and handling are essential to ensure the quality of a sample. Each sample was collected <br /> in a suitable,container,preserved correctly for the intended analyses,and stored prior to analysis for no <br /> longer than the ntaidnium allowable holding time. Details on the procedure for collection and handling <br /> of soil and ground-water samples used on this project can be found in Section 1.0. <br /> 3.2 Sample Idenfiihcatioas and Chaht•oP•Custcxly Procedures <br /> Sample identification and chain-cf-custody procedures ensure sample integrity and document sample <br /> possession from the time of collection to its ultimate disposal. a:ch sample container submitted for <br /> analysis had a label affixed to identify the Job number,sampler,date and time of sample collection,and <br /> a sample number unique to that sampl& 'Phis information,in addition to a description of the sample,field <br /> measurements_mads,-sampling-methodologyy,.names-of.on-site.personnel,-and any other-.pertinent Celd----.-.—. =------- -----..- ----- <br /> observations was recorded on the borehole log or in the field records. All samples were analyzed by a <br /> California-certified laboratory. <br /> r. : <br />