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AWES, LLC <br /> METHODS AND PROCEDURES <br /> Groundwater Sampling <br /> All monitoring wells where groundwater is encountered will be sampled according to the protocols listed <br /> below. All pertinent information will be recorded on a sampling information form or field book. <br /> Field Protocol <br /> Step 1- Measure water level. <br /> Step 2- A dedicated polyethylene bailer will be used to develop each well. Three well volumes will be <br /> evacuated from each well prior to sampling. <br /> Step 3- Collect water samples. Water samples will be collected using a polyethylene bailer. <br /> Step 4- Store samples in a cooler on ice for transport to the laboratory. Follow all documentation and chain- <br /> of-custody procedures. <br /> Step 5- Clean equipment. Water level measurement equipment will be cleaned with ethanol followed by a <br /> deionized water rinse. <br /> Upon completion of soil or groundwater sampling, a chain of custody log will be initiated. A copy of the chain <br /> of custody will be returned to the project manager. <br /> Chemical Analysis <br /> All analytical parameters are presented on Table 1. <br /> Groundwater Elevation Measurements <br /> The following outlines our standard groundwater quality sampling methodology. Before purging any of the <br /> soil test borings or monitoring wells,water level measurements must be taken. <br /> Measuring Point <br /> Establish the measuring point for the well. The measuring point is marked on the north side of the top of the <br /> monitoring well riser. The top of the riser is normally a one or two inch casing inside a locked protective <br /> casing. The riser will generally be PVC pipe. The measuring point should be described on the groundwater <br /> sample collection record or field book. <br /> Access <br /> After unlocking or opening a monitoring well, the first task will be to obtain a water level measurement. <br /> Water level measurements will be made using an electronic water level indicator. Depth to water and total <br /> depth of the well will be measured for calculation of purge volume. <br />