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APPENDIX yr <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 Ievel 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 the water in the well had stabilized. The other monitoring wells <br /> (all 2 inch wells) were purged until nearly depleted of groundwater. <br /> 3. The wells which were nearly depleted of groundwater were then allowed to recharge to 859- <br /> 40% of their original volumes. <br /> r� <br /> 4. Groundwater samples were then carefully extracted utilizing a clean teflort bailer, zvoiding any <br /> abrupt motions which could agitate•the sample and possibly result in loss of volatile compounds. <br /> , <br /> The teflon bailer was cleaned between each well using a tri-sodium phosphate solution and a <br /> double rinse process. <br /> 5. The samples were stored in preserved container, and transported on ice to a State cP California <br /> certified analytical laboratory. : <br /> Mf <br /> 6w <br /> ANOEI <br /> CGNSULTlNG <br /> GROUP <br />