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#` } ✓ `-' hjj KEEINFELDER <br /> t� F <br /> ' �- a pump or Teflon bailer. During the purging of the wells, field <br /> parameters (pH, conductivity, temperature) will be monitored. Samples <br /> will be collectedafter the field parameters have stabilized, normally <br /> I requiring three to!five well purge volumes. If the wells are incapable of <br /> f yielding at leasti three well volumes, the wells will be evacuated to <br /> dryness once, allowed to recover, and then sampled. After collecting a <br /> sample, the sample bottles will be immediately sealed and placed in an <br /> 17 iced cooler. Atl the end of the field day, the water samples will be <br /> delivered to Agriculture and Priority Pollutants laboratory, Inc. of <br /> 4 ono, California. <br /> To minimize the potential for cross-contamination, all developTent and <br /> sampling equipments will be steam cleaned prior to its use in each <br /> monitoring well. I Additionally, a tri-sodium phosphate solution followed <br /> by a clean water rinse will be pumped through sampling equipment prior <br /> to the collection of subsequent water samples. <br /> 3.2.2 Monitoring Well Location and Survey <br /> The relative ground surface elevations will be surveyed for each <br /> monitoring well to the nearest 0.01 foot. In addition, the top of the <br /> 2-inch PVC casingi <br /> s will also be surveyed. Zhe elevations will be tied <br /> into an assumed elevation or a nearby USGS bench mark. Depth to static <br /> ground water table will be m2.asured from the top of each pvc casing. The <br /> x <br /> .. t <br /> 29-88-03 14 <br /> i <br />