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• Introduction <br />Tha information assembled is tats 1996 Annual Hydrology Report (AHR) includes data <br />collected from approved monitoring eitao aetebliaaed at Seaaca Coal Company~e (SCC) senate <br />II Mina (state Permit Ho. C-HO-005). Locutions of monitoring cites diacuesad in tble <br />report can be found by referring to Bxalblt 7-2, Hydrology Monltoriag 91ta Locstioa !lnp, <br />rhfeb msy be found is the Seneca LI Permit ADplicatioa Packnge. <br />All references to 1996, or to "this yenr•, rill ba for Water Year 1996 (October 1, 1995 <br />tDrovgb September 30, 1996) unlace otharri sa noted. All tables referred to in the <br />following text een be found is Appendix A. In addition, a table of eoatmta for Appendix <br />A is given at the beginning of thst aDDendix. <br />eetraen October, 1995 and BaDtamber, 1996, mining Drograesed as iadicaeed by tea shaded <br />areas oa Pigure 1 (ADDandix A). From Piqure 1 it is evident that etriD mining is being <br />conducted eimultaneouely Sn tvo area.. Ia the eoutaern Dermit area, tDe Wadga coal seem <br />ie being mined, and in tae northern permit area tae Wolt Creek seam ie Delnq mined. <br />• Flald conductivity and DH meters nra calibrated prior to each day~a use- Tba conductivity <br />meter is cnlibrated using a Dotaeeium chloride solution xitD an electrical conductivity is <br />the 1000 to 3000 umhoa/Cm renga. Tae DH meter is calibrated using NHS trnceable Duffers <br />with DH values of 7 and 30. <br />Prior to October 1, 1989, all field conductivity values collected at Seneca II monitoring <br />sites warn not corrected Eor temperature (i.e., 25° C). Field conductivity darn starting <br />oa October 1, 1989 were temperature corrected [0 25° C. TDe formula for correcting non- <br />corrected conductivity data may be found is tba 1990 through 1992 AHAe. <br />SCC sae ineti tuted a sex monitoring site numbering ayatem for its sax Paradox'" water <br />quality data Dase. TDis sex system is detailed is Table A. For convenience Bake, ta16 <br />table Das been placed a[ the cad of tae Table of Contents (sea previous page). In <br />addition, Table 3, Summary of Ground Water Noaitozing Wells; Table 13, Summary of Surface <br />Water doaitoriag Sites; and tae Table of Contents of Appendices C througa G Dave all bean <br />revised to correlate the old aita (end map) name to tDa sex (Paradox) comDUter acme. Tae <br />sex computer name x111 De used throughout tae following text. <br />