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A new NPDBS amendment went into e££ect oa September 1, 1999. This amendment <br /> <br />authorized a reduction is <br />monitorin <br />fre <br />(f <br />kl <br />t <br />h • <br /> g <br />quency <br />rom wee <br />y o mont <br />ly) ai <br />Points 005, 006, and 009. It also authorized discharges at the new Pointe 015, <br />016, and 017 in the II-w South 8xpansioa Area. A copy of thi s amendment has <br />been provided to the CDMG. <br />Permit Revision 2 west into effect on December 10, 1999. This revision <br />primarily dealt with the II-SV South 8xpaneion, although several changes to the <br />)~ydrologie monitoring program were made. Those changes are explained is <br />Appendix 15-3a of the Seneca II-sl PAY. <br />After their review o£ last year's Seneca II-iP A}IR, the CDMG made several <br />comments in a letter dated fuse 9, 2000. SCC resDOnded in a letter dated July <br />13, 2000. <br />Meteorological Data <br />Precipitation data Se collected from a Selfort sleighing socket Rain Gaga • <br />aituatefl adjeeeat to Surface water 91te Sw-92w-FG1. Data for this year may be <br />Found is Table 1. Total monthly precipitation data collected at this site since <br />water Year 1990 are Dreaeated is Table 2. The Seneca II-w precipitation gaga <br />measured 17.08 inches this year. This value is 1.15 iachas (bas) lase thaw the <br />1990-2000 average. Temperature, wind eDead, nab direction data from the Seneca <br />II-sl Meteorologic Station ere Draeeated is Appendix s. <br />Data from the National Climatic Data Ceatar for the Naydea Station was used to <br />evaluate the precipitation trend. For this year, 17.05 iachas of praciDitatioa <br />was measured, which was 0.21 inches (196) greater than the 1961-1990 average. <br />All months but October, November, May, Juna, and July were above average. <br />Saowpeck runoff, sa estimated by totaling November through April Drecipitation <br />values, was 10.19 iachas, which was 1.78 iachas (2196) above the 1961-1990 <br />average. <br />Snowpaek runoff, estimated using the Seneca II-w precipitation gage, was 8.64 <br />inches (November-April total), which is 0.67 inches (796) less than the Seneca • <br />2 <br />