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7360 <br />7350 <br />7 340 <br />7330 <br />7320 <br />NORTH <br />25' <br />20 " TYP <br />FL NATURAL DRAINAGE <br />COURSE HW TO min. <br />MW -- - -- <br />i HW. _ <br />CUT PIPE FLUSH - gW` PROPOSED RIIIWY. FILL <br />WITH -_RAP RIP - 2� <br />DESIGN DATA ` _ i40 LR <br />Qzs= 48 cfs j - "- -�m in�.�n ^C <br />HW 1[- 50,8_ f_ e-� 16.g °j <br />D = 2.0 <br />H.W.= 5.0 <br />FREEBOARD = 2.0 <br />-18 -2 ROCK RIPRAP <br />P 366" 0 THICK (min.) TO <br />H. W. <br />PROFILE - UPPER CROSSING <br />I = 10 HORIZ a VERT <br />12" min. <br />BEDDING <br />49 <br />TYPICAL SECTION- NATURAL DRAINAGE <br />NORTH END <br />( 100' S of North FE ) <br />I "= 10' Hertz 8 Vert. <br />ILI <br />7220 <br />WEST <br />EAST <br />EAST <br />-7 - - - - -J- __'E21min <br />ALTERNATE <br />- - - -- <br />-SPILLWAY ELEV. 7224.0 HW \S� - - - <br />2 -� <br />- <br />DESIGN <br />BERM OR <br />wn <br />1aP C <br />--- <br />r <br />7390 <br />SILT - <br />FENCE . <br />33 cfs <br />MAX. AREA.OF IN MINING_- NATURAL DRAINAGE <br />COURSE <br />DESIGN <br />DATA <br />7220 <br />LOCATIONS <br />7210 <br />- <br />- <br />- 7218.4 BOTTOM OF POND ELEV. <br />dmaat = <br />1.0' <br />- - <br />p <br />8 90 0 2 <br />SUPPLEMENT <br />of 2 rrra <br />M N AREA OF NO MINING - NATURAL <br />�� <br />Qzs = <br />477 cfs <br />- --4 <br />COUR. <br />DRAINAGE I COURSE <br />�� <br />Q100 = <br />670 cfs <br />TYPICAL SECTION- SILT POND SPILLWAY <br />\ <br />I" = 5' HORIZ a VERT <br />dozy = <br />1.07 <br />7385 <br />" <br />MINING <br />---EXIST <br />\ <br />`� <br />\�`� <br />��� <br />doloo = <br />1.21' <br />NATURAL DRAINAGE <br />COURSE, <br />= <br />14.3% <br />\` <br />EXIST <br />GROUND <br />n = <br />0.045 <br />DESIGN DATA <br />WZ <br />HW Qloo t <br />Vzs = <br />8.11 fps <br />It <br />t� <br />f <br />Qioo = <br />Vloo = <br />8.83 fps <br />7380 <br />\ i <br />\ HW Qloo <br />dozs = <br />L 2 -0' <br />FREEBOARD - <br />N; g <br />(3.2' <br />VERT. TOTAL Oloo) <br />- - _ - <br />✓ - - r <br />2.0' <br />TYPICAL SECTION- NATURAL DRAINAGE <br />NORTH END <br />( 100' S of North FE ) <br />I "= 10' Hertz 8 Vert. <br />ILI <br />7220 <br />WEST <br />EAST <br />-7 - - - - -J- __'E21min <br />7225 <br />- - - -- <br />-SPILLWAY ELEV. 7224.0 HW \S� - - - <br />2 -� <br />- <br />DESIGN <br />DATA <br />wn <br />1aP C <br />--- <br />r <br />ALTERNATE BERM <br />Qloo = <br />33 cfs <br />-CUT INTO NATURAL ROCK <br />�QOR SILT FENCE <br />0.045 <br />7220 <br />ri RIPRAP OAS NOTED <br />7210 <br />',LOCATIONS <br />°"RGO /TLW <br />- 7218.4 BOTTOM OF POND ELEV. <br />dmaat = <br />1.0' <br />` <br />Obering, �'V urth Sr Associates <br />Consulting Civil Engineers <br />Registered Land Surveyors <br />1015 Elkton Drive <br />l oinrad" Spring% ( olorado 80907 <br />Ph.nm i t q- i i: M121N1 <br />p <br />8 90 0 2 <br />SUPPLEMENT <br />of 2 rrra <br />MAX. AREA OF NO MINTING <br />- NATURAL DRAINAGE <br />7215 <br />-FL NAITURAL DRAINAGE <br />COUR. <br />E <br />TYPICAL SECTION- SILT POND SPILLWAY <br />I" = 5' HORIZ a VERT <br />'. �. <br />MIN AREA OF NOI <br />MINING <br />---EXIST <br />GROUND <br />7200 <br />NATURAL DRAINAGE <br />COURSE, <br />- <br />DESIGN DATA <br />x <br />Qzs = <br />93 6 cfs <br />Q <br />Qioo = <br />130.5 cfs <br />\ i <br />\ HW Qloo <br />dozs = <br />1.68 ft. <br />7190 <br />N; g <br />ca <br />i <br />- - _ - <br />✓ - - r <br />2.0' <br />dacoo = <br />1.90 ft. <br />- <br />- <br />FREEBOARD <br />Sago = <br />372% <br />(3.9' VERT TOTAL Qloo) <br />n = <br />0.045 <br />Vzs = <br />16.63 fps <br />:• <br />TYPICAL SECTION-NATURAL DRAINAGE <br />SOUTH END <br />( 200' N E of West FE ) <br />I "= 10' Horiz 9 vert <br />Vwo = 18.07 fps <br />NORTH <br />SOUTH <br />7360 <br />26' <br />'PI <br />20' TYP_ <br />7350 I 8.0' <br />IL NATURAL <br />DRAINAGE COURSE H.W <br />6. <br />MIN Y - - \s�o R PROPOSED RDWY <br />Li GUT PIPE , <br />_ L FLUSH WITH FILL <br />7340 -___- RIP RAP <br />_ - -- 64.5 LF - 36 <br />f \ C_S.P <br />DESIGN DATA FL \18' -2d' 0 ROCK RIPRAP <br />7330 <br />18 " -24" 0 ROCK RIP RAP <br />Z 36 "THICK (min.) 15' <br />DOWNSTREAM FROM 7320 <br />OUTLET <br />IL 38.6 <br />Q2s = 69.8 cfs <br />HW <br />D = 2.0 <br />HW = 6. 0' <br />FREEBOARD= 2.0' <br />SILT POND DESIGN DATA <br />Qlo = 196 cfs <br />Qzs = 24.0 cfs <br />Q1oo= 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 />AN <br />7235 <br />7230 <br />39.0 na 42" THICK (min.) <br />TO H.W <br />I <br />PROFILE - LOWER CROSSING <br />I "= 10' HORIZ a VERT <br />61919 1 <br />38.5' <br />I <br />18 " -24 "0 ROCK <br />RIPRAP (c 42" THICK <br />(min.) 20'DOWNSTREAM <br />FROM OUTLET <br />12" MIN. <br />BEDDING(typ) <br />33.0 <br />- EXISTING GROUND <br />�A <br />\� O'TYP NATURAL DRAINAGE COURSE- MAXIMUM AREA OF MINING <br />M INED AREA- �� NATURAL DRAINAGE COURSE - MINIMUM AREA OF NO.MINING� <br />7230 <br />Top of beril lev. \ <br />varies) 7226.0 min.--- 2.0 mm.(depth <br />/30"CSP' varies with top of berg) <br />PERF/FOR - - - <br />RISE 722410 -- 7225 <br />7 Qzs FLOOD STAGE _ _ APPE SPILLWAY ELEV., �\ <br />_I SPAC <br />�r�5 %� jig r T <br />7218.4 Bottom • • • of pond Elev. In; • • • CUT INTO NATURAL ROCK <br />ri o O R <br />v� •••• . v RIPRAP AS NOTED Q! /7220 <br />o� ROCK RIPRAP <br />STORAGE w / I <br />m I <br />0 3' SEDIMENT - y <br />STORAGE ZONE - 42 THICK <br />min) R EXIST. DRAINAG i <br />f�30'C / ( `t COURSE ELEV. VARIES <br />72,14.q OUTLET 7215 <br />50 <br />M <br />7 7 -- <br />12 °min. BEDDING (typ.) <br />30 2 00 5L <br />TYPICAL SECTION <br />SILT POND OUTLET <br />1" 5' Horiz 9 Vert . <br />i <br />i <br />Y <br />H <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 />Permit <br />G' <br />Class <br />Sect,onlExhib,l L4,�4� <br />Class fljRev,smn�/� Z <br />-Type/S- �! r 1 lLy� �dHLjY I P.pr[�r�L IL_r1 <br />Class. 0 Re od 0 Hydro OGeneral Z•' z <br />Doc Type: <br />DApplicalion (Coal only) 0 Bond ❑ En(orcemenl 0 Inspection - <br />i EXISTING GROUND <br />-7 - - - - -J- __'E21min <br />7225 <br />- - - -- <br />-SPILLWAY ELEV. 7224.0 HW \S� - - - <br />2 -� <br />- <br />DESIGN <br />DATA <br />wn <br />1aP C <br />--- <br />r <br />LO'min. - 1 mh 1 <br />Qloo = <br />33 cfs <br />-CUT INTO NATURAL ROCK <br />n = <br />0.045 <br />7220 <br />ri RIPRAP OAS NOTED <br />S = <br />0.5% <br />°"RGO /TLW <br />- 7218.4 BOTTOM OF POND ELEV. <br />dmaat = <br />1.0' <br />` <br />Obering, �'V urth Sr Associates <br />Consulting Civil Engineers <br />Registered Land Surveyors <br />1015 Elkton Drive <br />l oinrad" Spring% ( olorado 80907 <br />Ph.nm i t q- i i: M121N1 <br />p <br />8 90 0 2 <br />SUPPLEMENT <br />of 2 rrra <br />a = <br />4:1 <br />7215 <br />-FL NAITURAL DRAINAGE <br />- COURSE <br />- - - . <br />TYPICAL SECTION- SILT POND SPILLWAY <br />I" = 5' HORIZ a VERT <br />H <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 />Permit <br />G' <br />Class <br />Sect,onlExhib,l L4,�4� <br />Class fljRev,smn�/� Z <br />-Type/S- �! r 1 lLy� �dHLjY I P.pr[�r�L IL_r1 <br />Class. 0 Re od 0 Hydro OGeneral Z•' z <br />Doc Type: <br />DApplicalion (Coal only) 0 Bond ❑ En(orcemenl 0 Inspection - <br />IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII <br />0017987 <br />- <br />No <br />wn <br />IlEVSON <br />r <br />DETAILS <br />n/o <br />as shown <br />6 -12 -89 <br />G'� <br />HYDROLOGIC SUPPLEMENT TO <br />AMENDMENT APPLICATION - <br />S_NYDER QUA�R RY <br />°"RGO /TLW <br />` <br />Obering, �'V urth Sr Associates <br />Consulting Civil Engineers <br />Registered Land Surveyors <br />1015 Elkton Drive <br />l oinrad" Spring% ( olorado 80907 <br />Ph.nm i t q- i i: M121N1 <br />p <br />8 90 0 2 <br />SUPPLEMENT <br />of 2 rrra <br />IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII <br />0017987 <br />