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r- I <br /> fI <br /> i APPENDIX A <br /> I _• <br /> i <br /> STANDARD OPERATING PROCEDURES <br /> SOP-4: Sample Identification and Chain-of-Custody Procedures <br /> SOP-5: Laboratory Analytical Quality Assurance and Control <br /> SOP-7: Groundwater Purging and Sampling <br /> SOP-12: Measuring Liquid Levels Using Water Level or interface Probe <br /> i <br /> y <br /> f <br /> i <br />