2010-05-07_PERMIT FILE - C2009087 (42)

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P PRINCIPAL SPILLWAY EM RGEN SP LWAY ELEV 6577.1 ELE 65 .0 P � SEDIMENT POND 003 PLAN VIEW SCALE 50' 0 50' 100' CONTOUR INTERVAL 1 FT. 8" CMP WATERTIGHT BAND 8" CMP END PLATE EMERGENCY SPILLWAY INVERT ELEV. 6580.0 TOP OF EMBANKMENT WIDTH = 15' WIDE ELEV. 6581.0 WIDTH = 15' WIDE A' 26600 W6575 0 +00 A' m 6600 < 1 +00 TOP OF EMBANKMENT = E' PRINCIPAL SPILLWAY 18' CMP ELEV. (SEE DETAIL) WIDTH = 15' WIDE ELEV. 65771 � B z 6600 'BOTTOM OF POND ELEV. 6569.9 w 6575 6550 L 0+00 1 +00 2 +00 2 +00 3 +00 6575 3 +00 B m r 6600 z 6575 4 +00 SEDIMENT POND 003 CROSS - SECTIONS HORIZONTAL SCALE 0 50' 100' VERTICAL SCALE 0 50' 100' 6550 5 +00 ° ullllllllll1111 1 "` �� PROFESSIONAL ENGINEERS STATEMELYd l state tha is map was preporc 1� information l mation p esented hereon is true, and correct to the best of my knowledge and in 7M 2 ZO D A o e Micha,l W. LL CO P.E. 26046 6" CMP EXTENSION TRASH RACK: 4" OPENINGS WITH 1/2" _ Notes: 1) The as -built embankment configuration, Spillway structures and impoundment BARS, BOLT ON CONNECTION TO 6 " CMP "- SEDIMENT POND 003 STAGE STORAGE elevations presented herein were surveyed in September 2005. EXTENSION !- _ __..._.._. _. INVERT ELEV. 6 ,577.10• 2) This as -built drawing was originally approved by the Colorado Division of Elev. _ Stage Area Total Capacity Description __.- .__.._._.._ Reclamation, Mining and Safety ( CDRMS) for the Seneca II Mine, Permit C -80 -005. XI STING 15" CMP (ft. - MSL) (ft) (acres) (ac -ft) The approved Seneca lI Mine drawing is Exhibit 7 -11, Northwest Impoundment 9003, 6569.9 0.0 0.00 0.00 Bottom of Pond DETAIL OF PRINCIPAL SPILLWAY _ with a certification date Of August 22, 1986. Not to Scale 6570.0 0.11'; 0.04 0.00' 6572.0 ` 2.11 0.42 0.46 3) Pond 003 is an approved, postmine permanent impoundment. The Office of State 18" CMP END PLATE 6574.0 4.11 0.59 1.47 Engineer approved the permanent impoundment request in a memorandum to CDRMS ', __...._..._ 6576.0 6.11 0.75` 2.81 dated August 31, 2006. The CDRMS approved the permanent impoundment TRASH RACK s" CMP EXTENSION - - -- - 6577. - demonstration as art of TR -37 in a decision dated September 12 2006. 1 � 7.2 0.83 '. 3.67 Principal Spillway p p 6578.0 8.11 0.89 4.44 6580.0 10. ?1 1.00 6.33 Emergency Spillway 4) This principal spillway detail replaces the principal spillway detail presented in the - -- - - Seneca 11 Mine Permit on Exhibit 7 -11. The detail presented herein was included with 6581.0 11.11 1.06 7.37 Top of Embankment the As -Built Report, Sediment Pond 003, Seneca 11 Mine, dated April, 2005, which was NOTE: THIS FIGURE REPLACES approved by CDRMS as part of TR - 37. PRINCIPAL SPILLWAY DETAIL PRESENTED ON EXHIBIT 7 -11 DATED 8/13/86. t'f4i151'T Q. 05.3 -G(�) REG /S'T 1111 �iG \� . ....... O W . F v 26046 c AIL ° ullllllllll1111 1 "` �� PROFESSIONAL ENGINEERS STATEMELYd l state tha is map was preporc 1� information l mation p esented hereon is true, and correct to the best of my knowledge and in 7M 2 ZO D A o e Micha,l W. LL CO P.E. 26046 6" CMP EXTENSION TRASH RACK: 4" OPENINGS WITH 1/2" _ Notes: 1) The as -built embankment configuration, Spillway structures and impoundment BARS, BOLT ON CONNECTION TO 6 " CMP "- SEDIMENT POND 003 STAGE STORAGE elevations presented herein were surveyed in September 2005. EXTENSION !- _ __..._.._. _. INVERT ELEV. 6 ,577.10• 2) This as -built drawing was originally approved by the Colorado Division of Elev. _ Stage Area Total Capacity Description __.- .__.._._.._ Reclamation, Mining and Safety ( CDRMS) for the Seneca II Mine, Permit C -80 -005. XI STING 15" CMP (ft. - MSL) (ft) (acres) (ac -ft) The approved Seneca lI Mine drawing is Exhibit 7 -11, Northwest Impoundment 9003, 6569.9 0.0 0.00 0.00 Bottom of Pond DETAIL OF PRINCIPAL SPILLWAY _ with a certification date Of August 22, 1986. Not to Scale 6570.0 0.11'; 0.04 0.00' 6572.0 ` 2.11 0.42 0.46 3) Pond 003 is an approved, postmine permanent impoundment. The Office of State 18" CMP END PLATE 6574.0 4.11 0.59 1.47 Engineer approved the permanent impoundment request in a memorandum to CDRMS ', __...._..._ 6576.0 6.11 0.75` 2.81 dated August 31, 2006. The CDRMS approved the permanent impoundment TRASH RACK s" CMP EXTENSION - - -- - 6577. - demonstration as art of TR -37 in a decision dated September 12 2006. 1 � 7.2 0.83 '. 3.67 Principal Spillway p p 6578.0 8.11 0.89 4.44 6580.0 10. ?1 1.00 6.33 Emergency Spillway 4) This principal spillway detail replaces the principal spillway detail presented in the - -- - - Seneca 11 Mine Permit on Exhibit 7 -11. The detail presented herein was included with 6581.0 11.11 1.06 7.37 Top of Embankment the As -Built Report, Sediment Pond 003, Seneca 11 Mine, dated April, 2005, which was NOTE: THIS FIGURE REPLACES approved by CDRMS as part of TR - 37. PRINCIPAL SPILLWAY DETAIL PRESENTED ON EXHIBIT 7 -11 DATED 8/13/86. t'f4i151'T Q. 05.3 -G(�)