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<br />Kr. David Berry <br />October 4, 1988 <br />Page 15 <br />4. Plots of the conductivity reported for the upstream and downstream <br />sites on Foidel Creek were provided in the AHR. Therefore, it was <br />thought that a plot showing conductivity for Station 800 would not add <br />meaningful information to the AHR. Unless the Division advises this <br />plot is necessary it will not be included in the 1988 AHR. <br />5. The locations of these sites have been discussed previously with the <br />Division, and the Division accepted the explanation addressing the need <br />for two sites. In summary, the gaging station is located downstream of <br />an ANFO storage facility (not operated by CYCC), and the water quality <br />sample were obtained from the Station (8) upstream of the site. <br />However, beginning with the 1987 AHR the sampling sites are referred to <br />as Station 8. <br />6. The conductivity values at Station 8 always have been higher than <br />Station 14 due to the affects of mine discharge. An interesting point <br />that should be noted is that the conductivity levels at both the <br />upstream and downstream station increased, indicating a natural <br />phenomenon. <br />7. For the period of record only one silver concentration 0.3 ug/1) <br />exceeded the detection limit of 0.1 ug/1. Given this history and the <br />analytical problems associated with low level silver analysis, it is <br />CYCC's opinion that silver concentrations can not be classified as <br />"elevated". u <br />8. Given the size of the current AHR, and the fact there are no Cyprus <br />operations between Station 8 and 900, it was thought that a plot of <br />conductivity for Station 900 would not add meaningful information to <br />the AHR. Unless the Division insists a plot is necessary, the 1988 AHR <br />will follow the same format as the prior one. <br />Middle Creek Station <br />1. The USGS did not include dissolved solids data in the information <br />supplied to CYCC in January, 1988. Subsequently, the data has been <br />received and entered into the data base. An updated report is attached. <br />2. The detection limit for the USGS laboratory is ug/1. <br />3. The concentration was entered correctly into the data base. <br />Fish Creek Station <br />1. The data for station 1001 has been provided in prior reports. Station <br />16 is currently the upstream station on Fish Creek and that data has <br />been provided in the current report. <br />