Laserfiche WebLink
a <br /> The-well cover will be a stove pipe riser with a locking lid set directly <br /> into the wet grout. Each well casing will be permanently inscribed or <br /> otherwise marked with an identification number. <br /> Following well completion, the top of each well casing will be <br /> surveyed to determine its elevation. If a bench mark is not available, <br /> the wells will be referenced to an arbitrary datum. <br /> The depth to groundwater will be measured in relation to the top of <br /> each casing. Water levels will be determined using the wetted tape <br /> method. All water levels will be measured at the same time, just <br /> prior to and after well development. <br /> MONITOR _. WELL 12 <br /> Teflon bailers will be used to develop the wells following their <br /> completion. The bailers will be decontaminated prior to developing <br /> each well by washing with an Alconox solution and triple-rinsing <br /> with deionized water. Each monitoring well will be developed by a <br /> combination of surging and bailing until the discharge is free of <br /> visible sediment. Conductivity, pH and temperature measurements <br /> will be taken during well development until these parameters <br /> stabilize. If the amount of water bailed during development is equal <br /> to or greater than five times the volume of water originally in the <br /> well, then the well will be sampled mediately after development. <br /> If the amount of water bailed during development is less than five <br /> times the volume of water in the well, then bailing will continue <br /> L ;;mmediately after development until five times this volume has been <br /> z !moved. After enough water has been bailed, the well will be <br /> sampled immediately thereafter. <br /> After development and well purging is completed, water samples <br /> will be obtained by lowering a decontaminated Teflon bailer into the <br /> well. The sample water will be immediately transferred by gently <br /> pouring the contents of the bailer into three clean volatile organic <br /> analysis (VCA) vials, filling each completely. Care will be taken to <br /> minimize any agitation of the water sample. Each sample vial will <br /> be then capped with a Teflon septum cap such that zero headspace is <br /> achieved, and no air bubbles are visible when turned upside-down. <br /> Groundwater for TPH analysis will be collected using the bailer and. <br /> transferred into a 1-liter amber glass container. All the containers <br /> (VOA vials and 1-liter amber glass) used will be labeled with the well <br /> 2-7 <br />