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' APPENDIX A <br /> Groundwater Sampling and <br /> Analysis Procedures <br /> INTRODUCTION <br />' The sampling and analysis procedures for water-quality monitoring programs are <br /> contained in this Appendix These procedures ensure that consistent and reproducible <br /> sampling methods are used, proper analytical methods are applied, analytical results are <br /> accurate, precise, and complete, and the overall objectives of the momtonng program are <br /> achieved <br /> SAMPLE COLLECTION <br /> Sample collection procedures include equipment cleaning, water-level and total <br /> well-depth measurements, and well purging and sampling <br /> Equipment Cleaning <br /> Pre-cleaned sample bottles, caps, and septa were provided by a Department of Health <br /> Services approved laboratory All sampling containers were used once and discarded <br /> after analyses were completed <br /> Before starting the sampling event and between each event, all equipment to be placed in <br /> the well or come in contact with groundwater was disassembled and cleaned thoroughly <br /> with detergent water, steam cleaned with tap water, and rinsed with delonlzed water Any <br />' parts that may absorb contaminants, such as plastic pump valves or bladders,were <br /> cleaned as described above or replaced The water-level sounder and oil/water interface <br /> probe were washed with detergent and rinsed with distilled water before use in the each <br /> well The rinse water was stored 1n 55-gallon drums onsite and will be disposed of by the <br /> client <br /> A-1 <br />' E 1CT110211QTR98 DOC <br />