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. - 5870 :°♦ 5850 POND J PLAN VIEW SCALE 1" = 30' TOP OF EMBANKMENT EL. 5858 5860 EMERGENCY SPILLWAY 10' INLET EL. 5856 S= % 5855 S= 2% ANTI -SEEP COLLAR 5850 FULL SEDIMENT EL. 5854 6" V� FULL WATER EL. 5856 INLET SECTION B - B' SEDIMENT POND J HORIZONAL SCALE 1" = 6' VERTICAL SCALE 1" = 5' SECTION A - A' SEDIMENT POND J HORIZONAL SCALE 1" = 10' VERTICAL SCALE 1" = 10' _ DEWATERING PIPE 191; 5855 5850 2.0' DEPTH rfr". - 5.0' - - 3HAV EMBANKMENT SPILLWAY DETAIL POND J 1 FULL FLOW LEVEL 2 - - - - - 5.0' EMEGENCY SPILLWAY DETAIL POND J WIDTH FULL FLOW LEVEL 1 1.5 5870 DITCH DETAILS DRAINAGE AREAS H AND J SEE MAP Nos. 21 -1, 21 -2, 21 -3 AND 21 -4 FOR LOCATION 5850 POND J CAPACITIES ACRE - FEET WATER SEDIMENT TOTAL DESIGN CAPACITY 1.32 1.16 2.47 REQUIRED CAPACITY 1.00 0.90 1.90 __F 1.7' FREEBOARD i- 0.3' FLOW DEPTH 1.4' FREEBOARD 0.6' FLOW DEPTH 2.0' 1 W 2 L\ FULL FLOW LEVEL DITCH DETAIL D -H1 SLOPE MAY BE CUT OR FILL DEPENDING ON LOCATION 2.0' 1.0' FREEBOARD ® 14% 0.4' FRyEEBOARD ® 1% 1 1.0' FLOW DEPTH ® 14% 1.6' FLOW DEPTH ® 1% �1 2 MIRAFI 60OX OR EQUAL -/ \_ 10" RIPRAP (D60 =10 ") RIPRAP LINED CHANNEL DITCH DETAIL D -H1 MINIMUM CULVERT SIZE DRAINAGE AREAS H AND J SEE MAP Nos. 21 -1, 21 -2, 21 -3 AND 21 -4 FOR LOCATION 0.3' CULVERT MINIMUM FREEBOARD No. DIA. C -H1 42 C -J1 24 C -J2 30 C -J3 12 FLOW DEPTH CONCRETE DITCH DETAIL BOARD NOTES: MINIMUM DITCH DEPTH REQUIREMENTS DRAINAGE AREAS H, I AND J SEE MAP Nos. 21 -1, 21 -2, 21 -3 AND 21 -4 FOR LOCATION DITCH DITCH FLOW No. DEPTH DEPTH D -H1 SEE DITCH DETAIL D -H1 D -H2 0.8 0.5 D -11 SEE CONCRETE DITCH DETAIL D -J1 1.1 0.8 D -J2 0.9 0.6 D -J3 1.2 0.9 D -J4 1.6 1.3 D -J5 0.8 0.5 D -J6 0.8 0.5 D -J7 1.4 1.1 1. For pond and ditch sizing calculations see Volume III, Appendix 8, 2. Riprap shall consist of hard, dense, rough fractured stone as nearly cubical as )EPTH practical. Stone shall be well graded in order that the voids can be filled, and at least 50 percent of the mass shall be stones equal to or larger than the specified riprap size. 3. A geotextile fabric shall be placed under all riprap. Use Mirafi 60OX or equal. 4. Pond dewatering pipe shall be plastic irrigation pipe, PIP, 80 psi rated, with bell and spigot joints or glued joints, valved on the outlet end. 5. For sediment control plan see Map No. 20. 6. For drainage plans see Map No. 21 -1, 21 -2 21 -3 and 21 -4. 6 Revised as per PR -07 Adequacy, Ditches ✓3 & J7 ENGINEER'S CERTIFICATION J.E.S. 04/23/03 /hereby certify that this drawing was done uo 5 Revised as per PR -07 J.E.S. 02/25/03 4 Added as -built notation to certification. by me or under my direct supervision and C) J.E.S. 5/28/02 that Vu0%fvjhe information presented on En- 3 Added Original Ground to Section A -A E. S. 1103102 th`'*OWWj' true and correct to the 2 Revised as per PR -06 12121101 Adequacy Comments L.K.J. 12 -27 -01 •'��E�T•K.ledge and belief and 1 Revised as per PR -06 L.K.J. 12 -05 -01 ♦J was �ucted in accordance No. DESCRlP770N: ♦�i7 this si• dewing, BY DATE ♦ REFERENCES v3 7l VOLUME Ill, EXHIBIT 8 .�o E. Stover, afe 2 VOLUME I, SEC77ON 2.05.3(4) fro _.ado P. E. ,91 0 PREPARED FOR: I'F`S•• ° ° " ° °Y °•G\♦ PROJECT: ® ®VV��i1. '�,� �ON p'� D BOW E RESOURCES, LTD. TITLE: ® RF D BOWIE NO. 2 MINE - P.O. Box 483 no POND J DETAIL APR 2 5 2003 SOME RESOURCES, LTD. PAOIVIA, COLORADO 81428 U� ONE INCH Division of Minerals d Geology _PREPARED BY: I, E. STOVER & ASSOCIATES __- -.- 2768 Comyses Dr., Suite 101 DESIGNED BY: L.K.J. DMG I.D. No. DWG. NAME: Grua Jot., Co 61606 C - 96 - 083 AN BY: SCALE: MAP NO. 22 -J - - --- _ _ _ - CHECKED BY: AS NOTED Pk -7 APPRovEb 5/1a-A3