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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 II). Range: -1.0 to 15.0 <br />pH. Resolution: 0.1 pH. Accuracy: +l- 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: +1- 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 />umhoslcm. <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 <br />is 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: VC. <br />Accuracy: +1- 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 V 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. Calibration will be performed with at least two standard buffer <br />solutions that span the range of pH values to be measured. <br />Flow -1) time flow into a container of known size and 2) utilize a portable 60° <br />V -Notch weir 3) calibrated culvert, 4) installed flumes. During 2014 the <br />Operator installed two 18" flumes in the West Fork of Terror Creek so low <br />flow can be accurately measured. One flume was installed upstream and <br />one flume was installed downstream. About 1.4 cubic yards of concrete is to <br />required anchor each flume. See Map 43. <br />MR -150 2.05-125 05/12/14 <br />