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. _. <br />• Introdtiation <br />The information assembled is this 1998 Annual Hydrology Aeport fA~U includes data <br />collected !rte approved monitoring sites astabiished at v^~^• Coal Compa'ry's (aCC) Seneca <br />II-R Mine (State permit No. C-82-057). Locations o! monitoriaq sites discussed in this <br />zeport can ba !nand h'P relarring to Exhibit 7-1, Hydrology Monitoring Map, rhiCh may be <br />found in the Seneca !I-N Permit Application Package. <br />All rnler~oes to 1995 (or L.o `t31s yaar•) rill be !os Water Lear 1998 (October 1, 199< <br />through September ]0, 1998) ealeas otherrisa noted. All tables relarsed to Sn the <br />lollorinq text can be !Quad in Appendix A. Ia addition, a table c! eonteaea !or Appendix <br />A is given at the beginning o! that appendix. Figure 1 (Appendix A) shore the azea mince <br />i.n 1995. 1[lnlnq began at 9anecs II-R Sn August, 1990. <br />Pield conductivity and pH meters rare eillbratsd yrior to ears days use. The mnduetlvity <br />meter is calibrated using a potasaim chloride aolutioa rich as electrical donductivlty la <br />• the 1000 to ]000 umhos/® range. The pH meter is calibrated using 1018 tracr~ble buffers <br />rith pH values o! 7 and 10. <br />Frior to October 1, 1989, all !Sold conductivity values collected at Seneca II-W <br />monitoring altos ware not msreeted !or tmperature (i.e., 2S• C). Field ~etlvity <br />data starting an October 1, 1989 were tempesatura corrected to 25' C. The formula !or <br />correcting non-corrected mnducttvlty data may De found in the 1990 tSrough 1992 AHRS. <br />8CC has Snstltuted a nor. monitoring alto numbering rystssf !es its new paradox"' rater <br />quality database. This nor rystm is detailed is Table A. For ooawenience sake, this <br />table has been Placed at the en6 0! the Table o! Contents (see prevloas page). Ia <br />addition, Table ], 8v-'^•u:_; o! Osound Aster Monitoring Rails: Table 30, eesmary o! Surface <br />Water Monitoring Sites: and the Table o! Contents o! Appendices a tarough F haw all bees <br />r'evlsed to crotralate the old site (an6 map) name to the nor (paradox) computer name. The <br />nor rs~utar name rill be used thzougboat the following text. <br />• Meteoralogieal Oata <br />Drecipitation data at the Beneca II-W Mine has been collected sine August 2B, 1989. <br />1 <br />