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MIMI <br /> W ":"si � - ­°. lo <br /> ..w - - <br /> s <br /> -V <br /> k <br /> e � <br /> 3 <br /> Tri-Valley Growers November 9, 1987 a <br /> Project No. 1582G page 5-3 <br /> �. an extra high quality seal since this area is subject to periodic flooding. A <br /> cement grout seal was then placed in the annulus up to the ground surfac: <br /> The top of the PVC well head was set in a traffic rated christy box set at <br /> grade with an internal metal locking cover to provide security. <br /> t: <br /> 5.3I.,. DEv�i n�nn �I <br /> Following well completion, each well was developed to remove fine-grainod <br /> material and to improve hydraulic communication with the formation. <br /> � Development of the well was performed by using a submersible bladder pump. <br /> A minimum of four well casing volumes of groundwater were removed from <br /> - each well. <br /> tw 5.4 <br /> Prior to groundwater sampling, the monitoring wells were checked for the <br /> presence of free floating product with a clear plastic bailer (see Appendix <br /> D). No floating product was observed in any of the monitoring wells. The <br /> groundwater samples were collected using a submersible bladder pump. <br /> Prior to sampling, the wells were purged of at least four well casing <br /> volumes. During this process the well water was monitored for pH, <br /> temperature, and specific conductance changes in order to assure that a <br /> representative groundwater sample was collected. The groundwater <br /> samples-.were--placed- in the appropriate-vials for- analysis- of -total --volatile___ <br /> hydrocarbons (TVH), total extractable hydrocarbons (TEH), benzene, toluene <br />