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zZ <br />Y <br />Z <br />a <br />NORTH <br />7360_ - - -- <br />■7350 <br />17340 <br />25' 49' <br />_ 14' TYP. <br />fL NATURAL DRAINAGE <br />COURSE H.W. 70'min. <br />50'_1 <br />MIN. I - <br />i H W. - <br />- CUTHPIPE FLUSH \ gW -PROPOSED RIWY. FILL <br />- - _RAP_, <br />7330 DESIGN DATA f 74. <br />I L� ��IR� � <br />Qz5= 48 cfs - <br />FL <br />D r t6.$ oiq <br />-18"-24'0 ROCK RIPRAP <br />D = 2.0 <br />H.W. 5.0 (41 36" THICK (min.) TO <br />= <br />17320 FREEBOARD = 2.0' H. W. <br />PROFILE-UPPER CROSSING <br />I" = 10' HORIZ. 9 VERT. <br />I <br />IL mill <br />ornni <br />WEST E ASST <br />ALTERNATE <br />BERM OR <br />7390 FENCE� MAX DESIGN DATA <br />LOCATIONS .�' <br />- MIN AREA OF NO MINING - NATURA i� 025 = 477 cfs <br />DRAINAGE COURSE / / Q100 = 670 cfs <br />dozy = 1.07' <br />7385 doloo = 1.21' <br />/ S°v4 = 14.3% <br />N �Y EXIST <br />}�'� GROUND n = 0.045 <br />z r� -- Vz5 = 8.11 fps <br />H W Qioo <br />Vloo = 8.83fps <br />-- --- - - - - -- --- -- - _ - -- -- 1 . <br />7380 X2.0' FREEBOARD <br />( 3:21 VERT: TOTAL Qioo) <br />TYPICAL S ECTION- NATURAL DRAINAGE <br />NORTH END <br />( 100' S of North R ) <br />I "= 10' Honnz. 8 Vert. <br />q_ <br />7220 WEST <br />ALTERNATE BERM <br />`,OR SILT FENCE <br />7210 `'LOCATION <br />_ __ MAX. AREA OF NO MINING- NATURAL DRAINAGE <br />COUR E <br />MIN. AREA OF NO MININ <br />7200 (~NATURAL DRAINA E COURSE SEXIST GROUND <br />X <br />a �. <br />Tom- <br />z \ HW Qioo <br />7190 N. � ``_ / <br />DI - .'� _T2 0' <br />FREEBOARD <br />(3.9'VERT TOTAL QIoo) <br />7180 <br />TYPICAL SECTION-NATURAL DRAINAGE <br />SOUTH END <br />( 200' N E of West fC ) <br />1"- 10' Honz 8 Vert <br />EAST <br />Q25 = <br />93.6 Cfs <br />Qtno = <br />130.5 cfs <br />d.z5 = <br />1.68 ft. <br />d, loo = <br />1.90' ft. <br />S.vg = <br />372% <br />n = <br />0.045 <br />Vz5 = <br />16.63 fps <br />V1oo = <br />18.0 7 fps <br />NORTH <br />SOUTH <br />SOUTH -26 - - -- - - 38.5' <br />7360 1 <br />20 TYP. <br />e.d <br />7350 ml n. <br />fE NATURAL <br />DRAINAGE COURSE H.W� <br />6.0� - - -- <br />MRF CUT PIPE I -2\S�o PROPOSED RDWY <br />FILL <br />-- �- - - -___ _ -w FLUSH WITH 18 " -24 "0 ROCK <br />7340 -� ____ RIPRAP RIPRAP (;4 42 "THICK <br />- �- - -= - fi4.5 L F 35 , <br />1 C.S.P (0) _9 30% <br />(min.) <br />ROM OUTLET <br />WNSTREAM <br />DESIGN DATA FI \18 " -24" 0 ROCK RIPRAP` - ' <br />7330 39.0 Ca 42" THICK (mi .) <br />Qz5 = 69.8 cfs TO H.W. r <br />I 12" MIN. <br />HW <br />D 2.0' <br />BEDDING(typ) <br />= <br />I11' -24" 0 ROCK RIP RAP H W = 6. 0' I 33.0 <br />Z 36 "THICK (min.) 15' FREEBOARD = 2.0' <br />DOWNSTREAM FROM 7320 <br />OUTLET <br />ft�ft - ____ <br />E 38.6 <br />PROFILE - LOWER CROSSING <br />I "= 10' HORIZ. d VERT <br />SILT POND DESIGN DATA <br />Qio = 19.6 cfs <br />Q25 =24.0 cfs <br />Qioo =32.9 cfs <br />EFFICIENCY = 70% <br />PARTICLE SIZE. = 40 microns <br />REQUIRED SURFACE AREA = 9, 716 sf <br />ANNUAL SEDIMENT = 14.7 Tons <br />SEE APPENDIX FOR ADDITIONAL <br />DESIGN INFORMATION <br />.• <br />EXISTING GROUND <br />10 TYP <br />-M /NEO AREA <br />Top of berm(Elev. <br />varies) 7226.10 min -` 2.0'min(depth <br />/ ` 30" CSP - varies with top of berm) <br />/ PFRFORATFD i y <br />7 Qz5. FLOOD STAGE_- - <br />- 7218.4 Bottom <br />/ <br />of pond Elev. N <br />C <br />c <br />K, z <br />0.3' SEDIMENT <br />STORAGE ZONE <br />50 <br />7235 <br />7230 -- - - - - -_ <br />- 1 <br />a <br />izzwv <br />_ SPILLWAY ELEV., - <br />CUT INTO NATURAL ROCK <br />OR <br />RIPRAP AS NOTED <br />NATURAL DRAINAGE COURSE - MAXIMUM AREA OF MINING <br />I_ NATURAL DRAINAGE COURSE- MINIMUM AREA OF NO MINING <br />J <br />30. C.S,P <br />'t <br />12' min. <br />BEDDIIVevv(typ.) <br />t <br />to <br />'71 <br />0 <br />, <br />f <br />30 <br />20 rI��� <br />I <br />_j � <br />M <br />Q O <br />TYPICAL SECTION <br />tics <br />SILT POND OUTLET <br />Ac <br />1" 5' Honz d Vert. <br />W <br />EXISTING GROUND <br />/Oe �'I - - - - - -- -- -- min <br />7225 �_ SPILLWAY ELEV. 7224.0 p Ste- DESIGN DATA <br />7220 <br />7215 <br />44 - e <br />l - e QIoo = 33 cfs <br />1.0'min.- LLD' min. <br />SCUT INTO NATURAL ROCK n = 0.045 <br />OR S = 0.5% <br />tri RIPRAP AS NOTED <br />dmoa. = 1.0' <br />-7218.4 BOTTOM OF POND ELEV = 4:1 <br />___FL INATURAL DRAINAGE <br />/ COURSE <br />TYPICAL SECTION- SILT POND SPILLWAY <br />I" = 5' HORIZ d VERT <br />I- n -1�1�� •alc� <br />4Uf, 13 IgPq <br />P- to -c-r4 m ,cr - <br />7230 <br />7225 <br />/ <br />f /'7220 <br />24 "0 - <br />ROCK RIPRAP - <br />42 "THICK <br />\ IL EXIST. DRAINAG <br />COURSE ELEV. VA I S <br />_ 7214. Or-ET 7215 <br />1n <br />ALL CSP SHALL BE MINIMUM 16 ga. WITH 2%' x 1 /z" <br />ANNULAR CORRUGATIONS. BED ALL PIPE IN CRUSHER <br />FINES A MINIMUM 12" THICK. BACKFILL PIPE WITH <br />CRUSHER FINES TO SPRINGLINE TO PROVIDE A CLASS <br />B BEDDING CONDITION. INSTALL TO MANUFACTURER <br />RECOMMENDATIONS. <br />IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII <br />22958 <br />