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outlined for groundwater in Table 1 of the CDRMS Guidelines for the Collection of <br />Baseline Water Quality and Overburden Geochemistry Data. <br />Aquifer tests will be performed on all eight existing and the five new bedrock monitoring <br />wells define aquifer characteristics of the Wadge Coal, underburden and overburden. <br />Due to the depths of the wells and water levels anticipated, slug tests will be performed <br />for collecting aquifer characteristics. Well yields will be determined using bailers or <br />other suitable method in conjunction with collecting water samples in each well during <br />the baseline collection period. <br />Ongoing monitoring data collected by SCC at alluvial well SCAL46 will be used to <br />provide baseline groundwater information for the proposed portal area. This well is <br />downstream of Seneca's Pond 004, and is currently monitored for water levels, field <br />parameters and groundwater quality parameters bi- annually (May /June and <br />September /October). Details on the existing monitoring requirements for this well can be <br />found in SCC's 2007 Annual Hydrology Data Report for the Seneca II Mine, submitted <br />in May 2008. Data collected from this well is extensive, spans several decades, and <br />should be sufficient for providing baseline groundwater information for the alluvium <br />down - gradient of the proposed portal area. <br />Surface Water Baseline Data <br />• Flow measurements, field water quality parameters and water samples collected at <br />Seneca's surface water site at the outfall of Pond 004 downstream of the proposed portal <br />will be used to provide baseline surface water information for the proposed portal area. <br />Pond 004 is currently monitored monthly for flow, field parameters, and NPDES water <br />quality parameters, and quarterly for an expanded list of surface water parameters. <br />Details on the existing monitoring requirements for this surface water site can be found in <br />SCC's 2007 Annual Hydrology Data Report for the Seneca II Mine, submitted in May <br />2008. Data collected from this site is extensive, spans several decades, and should be <br />sufficient for providing baseline surface water information, including continuous flow <br />data during earlier years, for evaluating baseline surface water down - gradient of the <br />proposed portal area,. <br />Several surface water sites have been established and monitored by SCC for more than <br />ten years on Grassy Creek and Little Grassy Creek. Currently, there are three sites being <br />monitored tri- annually for flow, field parameters, and a full suite of surface water <br />parameters: SSLGS on Little Grassy Creek up- gradient of mining activities at the Seneca <br />II Mine; SSG1 on upper Grassy Creek but below Pond 011 at Seneca's Yoast Mine; and <br />YSGS on lower Grassy Creek well below both SCC's Yoast Mine and the Seneca II <br />Mine. Details on the existing monitoring requirements for these surface water sites can <br />be found in SCC's 2007 Annual Hydrology Data Reports for the Seneca II Mine and <br />Yoast Mine submitted in May 2008. In addition, site YSGF5 was operated on upper <br />Grassy Creek prior to the onset of mining at SCC's Yoast Mine. Data collected at this <br />site included continuous flow data and monthly field parameters and full suite surface <br />• water quality data from March through October for several years. Surface water data <br />3 <br />