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r <br /> FIELD PROCEDURES <br /> r <br /> 1 e a,... Dente o Ground Vate i a ito i lel s <br /> M asu e e G <br /> The depth of the groundwater surface in a monitoring well is measured from the top of the <br /> well casing to the nearest 0.01 foot with a Solinst water-fevel indicator. <br /> C��hi c ' e sof u d-Water <br /> the <br /> - fluid <br /> ace <br /> Ground-water samples are collected €atelubhalftve theanalysis length of a clean Teflon baiter through <br /> monitoring well by lowering a rieveim Y examined for floating <br /> the interface. Thea other subjective ret ctivedevi'dence of hydrocarbons.d the water sample is tsually <br /> product, sheen, an <br /> Pur in and Iam ling of Monitorin Wells from each <br /> inimum of 4 well <br /> water <br /> Before sample collection,a mpump. <br /> sAouffici nt olume purged purged to allow <br /> monitoring well using an electric submersible pump. <br /> temperature,pH, and conductivity t 84e put nt f the initial-ge water to llevel,After ground wateresamplehe <br /> well is allowed to recover to at leas p baiter is <br /> collected by lowering a clean Teflon bailer past tile air- cleaned.4-millilite egllass vials <br /> The vials are completely filled <br /> retrieved, and the sample is slowly transferred to laboratory- <br /> # a preservative. <br /> hat contain concentrated hydrochloriaacid beled with he site identification number,he date <br /> so as to prevent headspace. The vialsle the samp <br /> and time of samplF: col4ection, ion number. <br /> he pin ied storage and deliused, anvered to a laboratory certified d by he <br /> The samples are promptly place <br /> State of California. <br /> ,4PPIied GeO$YWO MS ------------ <br />