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x <br /> YL <br /> SAMPLE('ni:L1?CTIi)N <br /> Following well development, water samples were obtained by <br /> lowering a decontaminated rl'E;flon bailer into the well. The sample <br /> ,,eater was immediately transforred by gently pouring the contents of <br /> the bsiler into a clean volatile organic analysis (VOA) vial, <br /> completely. Care was taken to minimize any agitation of the water <br /> sample. The sample vial was then capped with a Teflon septum cap <br /> such that zero headspace was achieved, and no air bubbles were <br /> visible when turned upside-down. <br /> Groundwater for TPH analysis was lolls ctedtusing,tilebaileri ser and <br /> transferred into a 1-liter amber g <br /> Ple <br /> containers (VOA vial and 1-liter amber glass) were labeled with the <br /> well number, date, time, sampler's initials, location, and analysis <br /> required, and delivered iinmediatcly to the on-site mobile laboratory. <br /> Each sample was logged onto a chain-of custody form (See Appendix <br /> H), <br /> N'I'AFNATEN71'XND DISPOSAL <br /> All purge water from the development of the wells was placed in a 55- <br /> gallon drum pending the results of the groundwater analyses. <br /> Following laboratory confirmation of the absence of any petroleum <br /> fuel constituents in the water samples, the bail water was disposed of <br /> on-site. <br /> AMPLE ANALYSIS <br /> 1 <br /> Soil samples were an: }��'�i .�t both 'I`PH-Diesel and Gasoline by EPA <br /> Method 8015 modif-ed .i,td 1311'X&E by EPA Alethod 8020. Soil samples <br /> analyzed for TPH-D were prepared by <br /> EPA Method 3550 using <br /> sonication. Soil samples analyzed for BT.X&E were prepared using <br /> EPA Method 5030 (purge and trap). Total petroleum hydrocarbons as <br /> in <br /> soil samples were analyzed and characterized by <br /> Chromatography/Flame ionization Detection (GCFID', with a fused <br /> capillary column. <br /> Nater samples were analyzed for TP�PAsel thud Gas lineMethods by of <br /> Method 8015 modified and BTX&E by ' ' <br /> preparation and analysis of all soil and water samples are <br /> summarized in Table 2-1 along with target detection limits. <br /> All sample analyses were performed by a mobile laboratory provided <br /> by Sequoia Analytical of redwood City, a State-of-Cali fornia-certified ted quality <br /> laboratory which maintaisls well-established t art snd Sequoia Analytical <br /> assurance/quality control (QAIQC) programs. <br /> strictly adheres to Section 10 ("Quality Control/Quality Assurance") <br /> 2-S <br /> S7R17177E�7flla ®117n''lIM71� i <br />