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AWES, LLC <br /> <br />METHODS AND PROCEDURES <br /> <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 /> <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 /> <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.