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an electronic velocity meter (Q=VA1. Low flows at Site SG5 are measured using a portable <br />cutthroat flume or the velocity/cross section method using a float to determine velocity. Float • <br />velocities are multiplied by a correction factor of 0.8 (Brakensiek et al., 1979 and Buchanan <br />and Sumers, 19681 <br />All NPDES sites and sites with a FG prefix have been equipped with Parshall flumes and <br />continuous flow recorders. Initially, factory rating curves were used for data reduction. Rating <br />curves have been verified by comparison of flume stage heights with flow measurements <br />obtained by velocity/cross section, portable cutthroat flume, or bucket/stopwatch methods <br />Surface Water Quality Sample Handling, Preservation, and Analysis. Surface water quality <br />samples are collected by grab sampling. Raw non-acidified and!or raw acidified water samples <br />are taken from the sampling site and placed into specially prepared sample bottles. Dissolved <br />constituent samples are filtered in the field with a 0.45 micron membrane filter. Water samples <br />are chilled by packing the bottles in iced coolers, and then they are promptly taken to an EPA <br />certified laboratory for chemical analysis. Appendix 15-2 (Pre-October, 1991 Hydrologic <br />Monitoring Program) contains the surface water parameter long list required for analysis of field <br />season water samples. The types of samples, preservatives, and bottles used in the monitoring <br />program are contained in Appendix 15-1. <br />All water samples are field tested for pH, temperature, and electrical conductivity at the time • <br />they are collected. The pH meter is calibrated before each day's use by performing atwo-point <br />calibration using pH 7.0 and 10.0 buffer solutions. Single point calibration checks are <br />performed in the field. Conductivity meter calibrations are routinely verified using potassium <br />chloride solutions varying in strength from 1000 up to 3000 umhos/cm, depending on the <br />availability of the solutions from select vendors. Field conductivities reported prior to the end <br />of water year 1989 are not temperature compensated. A new conductivity meter with an <br />automatic temperature compensation probe was acquired in October, 1989. The new <br />conductivity meter is calibrated before each day's use. Sampling protocol is reviewed and <br />maintained in a systematic fashion that delivers reliable data. Seneca Coal Company ISCCI will <br />continue to implement improvements in sampling protocol to minimize errors affecting both <br />field chemistry measurements and sample collection. <br />CJ <br />2 Revised 9/96 ~ <br />