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w� <br /> APPFtjDIX VII <br /> Groundwater Sampling Procedure <br /> Groundwater samples were obtained from the monitoring wells according to the following <br /> procedure. <br /> 1. Prior to sampling, the hydrostatic groundwater level in each monitoring well was measured and <br /> recorded. <br /> 2. MW-1, a 4 inch diameter well,had three to five well volumes of water removed from it until <br /> both the temperature and pH of tha water in the well hsd stabilized. The other monitoring wells <br /> (all 2 inch wells) were purged until nearly depleteO. of groundwater. <br /> -• 3. The wells which were nearly depleted of groundwater were then allowed to recharge to 85%- <br /> 9090 of their original volumes. <br /> 4. Groundwater samples were then carefully extracted utilizing a clean teflon bailer, avoiding any <br /> abrupt motions which could agitate the sample and possibly result in loss of volatile compounds. <br /> The teflon bailer was cleancd between each well using a tri-sodium phosphate solution and a <br /> double rinse process. <br /> 5. The samples were stored in preserved containers and transported on ice to a State of California <br /> certified analytical laboratory, <br /> ANDERSON <br /> C� CONSULTING <br /> 1I GROUP <br />