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of Wells YSRL10, YW14 and YW15 were discontinued. Also, monitoring of surface water site YSSF2 (012 baseline( was discontinued. I Rftei their review of last year's Yoast AHR, the CDMG made several comments in a letter dated Av gust 19, 2001. Following is SCC's response to those commnents. Item 1: The CDMG commented on the surface water standards used in the AHR. The CDOH Reg. No. 33 standards recommended by the CDMG include the use ~of 'Table Value Standards' (TVS). These TVS's require complex mathematical equations to calculate. Due to other projects undertaken by the mine hydrologist this year, SCC will be unable to comply with the CDMG's request this year. Hopefully, SCC will be able to take the time required to computerize these TVS's for the 2002 RHR. For this AHR, SCC will continue to use the CDOH Reg. No. 31 agricultural standards. Item 2: The CDMG commented on SCC's ground water quality discussion. No response is required. Meteorological Data No meteorological data is collected at the Yoast Mine. SCC maintains a weather station (wind speed and direction, temperature and precipitation) at its adjacent Seneca IT-W Mine. The reader is referred to that AHR, Appendix B. SCC also maintains a precipitation gage at its adjacent Seneca II Mine. Data for this year are included on Table 1. A summary of all data collected at that station is provided here in Table 2. i Data from the National Climatic Data Center's Hayden Station is used here to evaluate the precipitation trend. For this year, 14.66 inches of 'precipitation was measured, which was 2.18 inches (138) less than the 1961-1990 average. Only November, February, July and August were above average. Snowpack runoff, as estimated by totaling November through April precipitation values, was 8.40 inches, which was 0.01 inches (0,'.14;) below the 1961-1990 average. ~ 2