2013-04-18_PERMIT FILE - C2009087A (2)

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RULE 2 - PERMITS The baseline hvdrologlc Inforination presented in Section 2.04.7. Hydrologic Description, of this permit application includes identification of surface draina,,es and general f1o\\ characteristics: lllforinatlon on correspondllig peak flows and allnllal 1'1-111011 VOIll111eS: identification of grOnnd\\ater aqulfel: and a general description 01 agllller CharaclellStlCS. the baseline hydrOlOgIC 111fo1'lllatloll forms the basis and serves as it reference for the ollgolllg ]INdrolo`alc 1110111torlllg prllgrarn, detailed 111 Sectloll 2.04.7. 1 he proposed operational rnoilltoring net\ \ork consists of 8 spoll spl'lllg locations. 15 (,round \ \atcr wells (4 ovcrburdcn, 5 \N'ad`ac coal. i alI1Cy11-1111. and 3 Spoll), and 6 stream locations. The locations of the nionitorlllg stations are shown oil Map 2.04.7 -MI, Ilydrolo(,v. Tables 2.04.7 -T9. Ground Water Moilitoriiiu Plan Sumnlarv. and 2.04.7 -T11. Surface Water Monitorino Plan Stininlary. SL1117111arIZe the type and location of historic and exlstlll`() monitoring sites. Tables 2.04.7 -1'10, Ground Water Analytical Paranl List. and 2.04.7 -T12, Surface NVater Analytical Param List, sununarizc the phy sical and chemical paranls to be pleasured. PSCM \gill continue surface and ground water nlonitorino activities after completion of reclamation operations to document restoration of pre- nlinino hydrologic characteristics. All surface and groundwater monitoring installations and associated structures and equipment will be properly installed. maintained, and operated to assure the accuracy and consistency of inollltoring data. Surface \\ater monitoring will be discontinued when untreated surface runoff meets applicable effluent limitations and the CDMG approves removal of drainage and sediment control structures. Groundwater monitoring wells will be abandoned and rernovcd in accordance with applicable CDMG gnldelllles and permit commitments following CDMG approval to discontinue groundwater Illollltorlllg. Hydrologic I'Totection and Reclamation Plans hi older to minimize potential ]Milling- related impacts to existing hydrologic systems in the permit and adjacent areas, PSCM has incorporated specific Illollltorlllg, operational, and initlgatlon measures into the mining and reclamation plans for the PSCM. These measures are based oil historic and baseline monitoring information for the site. the experience of other nearby mining operations in controlling hydrologic impacts, applicable regulatory requirements. and the results of ongoing monitoring programs. Historic and baseline monitoring data have been used to characterize current hydrologic conditions including seasonal characteristics as described in Section 2.04.7, Hydrologic Description. During the operation of the mine, monitoring will be performed to determine if any mining - related impacts to the hydrologic balance have occurred and remedial actions taken, if necessary. The hydrologic monitoring plan is described in Section 2.04.7. Measures that may be taken to remediate any mining- related impacts to the hydrologic balance are addressed in the hydrologic protection plan below. As described in Section 2.04.7, Hydrology Description, PSCM researched existing information on the hydrologic environment of the permit and adjacent areas, as well as collecting supplemental hydrologic information in order to accurately characterize existing conditions and develop an overall understanding of hydrologic systems and relationships. The hydrologic protection plans have been developed with consideration of the resource values and relationships described in Section 2.04.7 and PSCM's plans for mining and related activities, as outlined in Sections 2.05.3), Operation Plans, and 2.05.4, Reclamation Plans. The plans, therefore, reflect site - specific conditions and the nature and extent of anticipated mining related impacts in order to assure effective compliance with the following applicable regulatory requirements and consistency with overall environmental objectives: Midterm Review 2.05 -93 Revision 04/2013