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' Drajt: Aprii S, 1999 Page B-1 <br />APPENDIX B <br />STANDARD OPERATING PROCEDURE FOR WATER LEVEL MEASUREMENT <br /> <br />' B.1 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 />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 />' B.3 PREPARATION <br />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 /> <br />' Agapito Associates, Inc. <br />