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Field parameters for groundwater are depth to water level, pH, conductivity <br />and temperature. Field parameters for surface water are flow, pH, <br />conductivity and temperature. Equipment and methods used to measure the <br />field parameters include: <br />pH -A Cole Parmer pocket -size tester (pH Tester 11). Range: -1.0 to 15.0 pH. <br />Resolution: 0.1 pH. Accuracy: V 0.1 pH. Temperature compensation: <br />automatic 0 to 50 °C. Calibration: 1, 2 or 3 point. <br />Conductivity - Two Cole Parmer pocket -size microprocessor - controlled <br />testers with different range capabilities (TDS Tester 10 and TDS Tester 20). <br />Accuracy: V 2% FS. Temperature compensation: automatic 0 to 50 °C. <br />Operating temperature: 0 to 50 °C. Range: 0 to 1990 and 2,000 to 19,900 <br />umhos /cm. <br />Depth to Water - A Water Level Indicator (M- Scope) is used to measure <br />depth to water. The cable is marked in 5 -foot increments. A tape measure is <br />used to determine accurate distances between marked increments. <br />Temperature - A standard mercury thermometer which measures <br />• temperature in degrees Celsius and a Cole Parmer microprocessor - <br />controlled tester (Temptester). Range: -28 to 150 °C. Resolution: 1°C. <br />Accuracy: `d 1 % FS. <br />Dissolved oxygen - Horiba Model U -7, membrane type with automatic <br />temperature compensation 0 to 40 °C, galvanic cell 0 to 20 ppm `d 1.0 ppm. <br />The electronic water monitoring instruments may vary. However, the stated <br />accuracy of the instruments will be equal to or greater than that listed above. <br />The pH meter and the conductivity meter are calibrated prior to all sampling <br />events. The pH meter is calibrated using the 2 point method. The expected <br />pH is bracketed by the pH of the calibration solution. In most cases the pH <br />meter will be calibrated at 7 and 10 which will bracket all of the current <br />monitoring results. If an expected pH is less than 7, the pH meter will be <br />calibrated at 4 and 7. <br />Flow - One of two methods, 1)time flow into a container of known size and 2) <br />- - - - -- -- -- utilize -a portable 60° V -Notch weir. - <br />PR -12 2.05-125 02/10 <br />A PPRoV 6P <br />1/ lie. //Z) <br />