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Decrmber 13, 1999 ~ ~ Pnge B-1 <br />APPENDIX B <br />STANDARD OPERATING PROCEDURE FOR WATER LEVEL MEASUREMENT <br />B.I INTRODUCTION <br />The purpose of this document is to define the standard operating procedure (SOP) for <br />measuring water levels in wells at the American Soda, Yankee Gulch Sodium Lease. This document <br />describes the materials and procedures required, and serves as a supplement to the groundwater and <br />surface water monitoring plan. <br />The objective of measuring ("sounding") water levels is to determine the change, if any, in <br />water level elevation over time. Electronic water level sounders and dedicated pressure transducers <br />will be used. Water level measurement with an electronic sounder will be conducted as described <br />in this SOP. Water level measurement with a pressure transducer should be conducted in accordance <br />with the transducer manufacturer's operation and calibration instructions. <br />1 B.2 EQUIPMENT <br />Equipment needed to measure water levels may include: <br />- Maps with well locations. <br />- Well completion data. <br />- Keys to protective well covers. <br />- Electronic water level sounder. <br />- Engineer's tape. <br />~ - Decontamination equipment. <br />l B.3 PREPARATION <br />J The following actions aze recommended before going to the field to sound water levels: <br />- Test equipment prior to departing for field. Are the batteries fresh? Does the sensor <br />work when probe is immersed in water? <br />Agapito Associates, Inc. <br />