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SOP for Operation and Calibration of Field Water Quality Instruments i <br />TABLE OF CONTENTS <br />1. INTRODUCTION ..................................................................................................... ............................... 1 <br />2. MATERIALS REQUIRED ....................................................................................... ............................... 1 <br />3. PROCEDURE ............................................................................................................. ..............................1 <br />3.1 <br />Temperature ............................................................................................. ..............................1 <br />3. 1.1 Calibration .................................................................................. ..............................1 <br />3.1.2 Field Operation .......................................................................... ............................... <br />1 <br />3.2 <br />pH ............................................................................................................ ..............................2 <br />3.2.1 Calibration .................................................................................. ..............................2 <br />3.2.2 Field Operation .......................................................................... ............................... <br />2 <br />3.3 <br />Specific Conductance (SC) .................................................................... ............................... <br />2 <br />3.3.1 Calibration .................................................................................. ..............................2 <br />3.3.2 Field Operation .......................................................................... ............................... <br />3 <br />3.4 <br />Dissolved Oxygen Meter ........................................................................ ............................... <br />3 <br />3.4.1 Calibration .................................................................................. ..............................3 <br />3.4.2 Maintenance Considerations ..................................................... ............................... <br />4 <br />3.4.3 Field Operation .......................................................................... ............................... <br />4 <br />3.4.3.1 Measuring Dissolved Oxygen in Groundwater ............ ............................... <br />4 <br />3.4.3.2 Measuring Dissolved Oxygen in Surface Water .......... ............................... <br />4 <br />3.5 <br />Oxidation Reduction Potential (ORP) .................................................... ............................... <br />5 <br />3.5.1 Calibration .................................................................................. ..............................5 <br />3.5.2 Field Operation .......................................................................... ............................... <br />5 <br />4. CALIBRATION SOLUTIONS ................................................................................. ............................... 5 <br />5. REPORTING ............................................................................................................. ............................... 5 <br />6. DISCUSSION ............................................................................................................. ..............................6 <br />7. REFERENCES .......................................................................................................... ............................... 6 <br />4153A.140129 Whetstone Associates <br />