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zAPPROXIMATE EXISTING GROUND SURFACE <br />COMPETENT SOIL/ <br />ROCK CUT SLOPE <br />1 � <br />�2 \ <br />�1:5' (MIN) �\ / <br />1 <br />1 2 <br />2' <br />INTERIOR DITCH <br />SAFETY BERM <br />3' (MIN) ',�- COMPACTED FILL <br />FILL REQUIRES 3 FOOT <br />VERTICAL "KEYS" INTO <br />NATURAL GROUND <br />1 TYPICAL <br />ROAD <br />SECTION <br />(CUT /FIL <br />T <br />P1 <br />15 <br />19 <br />15 <br />10 <br />0 <br />10 <br />20 FEET <br />P3 <br />15 <br />FY <br />SCANNED <br />NATURAL GROUND <br />SPILLWAY INVERT <br />r0.5' COMPACTED SUBGRADE MOISTURE <br />CONDITION AS NECESSARY <br />2 <br />0 � <br />12" d5o RIPRAP (MIN) <br />SEDIMENT POND EMERGENCY SPILLWAY <br />(SEE NOTE <br />NTS <br />TABLE 1- SEDIMENT POND DESIGN <br />SEDIMENT POND <br />Hw <br />FID <br />T <br />P1 <br />15 <br />19 <br />15 <br />P2 <br />11 <br />15 <br />15 <br />P3 <br />15 <br />19 <br />15 <br />P4 <br />15 <br />19 <br />15 <br />PS 1 <br />15 1 <br />19 1 <br />15 <br />TABLE 2- EMERGENCY SPILLWAY DESIGN <br />SEDIMENT POND <br />W <br />D <br />YfoyR <br />Y1ooyR <br />Pi <br />38 <br />4.0 <br />2.0 <br />3.0 <br />P2 <br />10 <br />4.0 <br />1.9 <br />2.8 <br />P3 <br />10 <br />4.0 <br />0 <br />0.4 <br />P4 <br />10 <br />4.0 <br />1.2 <br />1.9 <br />P5 <br />10 <br />4.0 1 <br />1.1 1 <br />1.6 <br />APPROXIMATE EXISTING GROUND SURFACE <br />�2 n <br />COMPETENT SOIL/ <br />ROCK CUT SLOPE <br />1.5' (MIN) <br />2 1% (MIN) <br />li <br />2' <br />INTERIOR DITCH 24' <br />r2�) TYPICAL ROAD SECTION <br />CUT) <br />10 0 10 20 FEET <br />PERFORATED RISER <br />(SEE NOTES 3 AND 4) <br />FILTER MATERIAL dN = 3" <br />SEDIMENT STORAGE <br />2 <br />CONCRETE FOOTINGS <br />NOTES: <br />1. FOR DRAINAGE REMOVE 3 FEET OF BERM WIDTH ON DOWNHILL ROAD EDGE <br />EVERY 25 FEET. <br />2. CULVERTS, SEDIMENT POND SPILLWAYS AND ROAD INTERIOR DITCHES ARE <br />DESIGNED FOR 100— YEAR /24 —HOUR STORM EVENT. SEDIMENT POND SPILLWAYS <br />INCLUDE A MINIMUM FREEBOARD OF 1 FOOT. <br />3. PERFORATIONS SHALL BE MADE IN THE VERTICAL RISER TO ALLOW COMPLETE <br />DRAINAGE OF THE SEDIMENT CONTROL PONDS. FOUR ROWS WITH FOUR," <br />PERFORATIONS PER ROW SHALL BE CONSTRUCTED AT 1 FOOT CENTERS <br />BEGINNING 1.5 FEET ABOVE THE DISCHARGE PIPE INVERT. <br />4. THE PERFORATED RISERS MAY BE CAPPED FOR SEDIMENT PONDS P2, P3, P4, <br />AND P5 TO PROVIDE FOR BETTER SEDIMENT REMOVAL. THE PERFORATED RISER <br />FOR SEDIMENT POND P1 MUST REMAIN OPEN TO PROVIDE THE NECESSARY <br />DEWATERING CAPACITY. <br />5. EMBANKMENT FILL MATERIAL SPECIFICATIONS SHALL BE ISSUED AND APPROVED <br />BY THE OFFICE OF THE STATE ENGINEER PRIOR TO CONSTRUCTION. <br />6. SEDIMENT CONTROL PONDS SHALL BE CONSTRUCTED TO ENGINEERING DESIGN <br />STANDARDS AND MEET REQUIREMENTS OF THE OFFICE OF THE STATE ENGINEER. <br />7. THE SPILLWAY SHALL BE CONSTRUCTED AROUND EITHER END OF THE DAM IN <br />SUITABLE MATERIALS AS DETERMINED BY THE FIELD ENGINEER, AND SHALL <br />EXTEND TO A POINT WELL BELOW THE EMBANKMENT TOE. THE SPILLWAY <br />CHANNEL SHALL BE ARMORED WITH 12" d5o RIPRAP OR EQUIVALENT EROSION <br />PROTECTION. <br />F4 <br />Hw <br />24 <br />SAFETY BERM (SEE NOTE 1) <br />3 TYPICAL ROAD SECTION (FILL) <br />10 0 10 20 FEET <br />r—T� <br />12" DIA HDPE <br />TYPICAL SEDIMENT POND EMBANKMENT WITH PERFORATED RISER <br />(SEE NOTE 6) <br />NTS <br />ES J. GG <br />I EG15TEgFO <br />Permit Number /Y1 l70 zl - d7/ <br />EMBANKMENT FILL MATERIAL <br />(SEE NOTE 5) <br />Class: [Permit <br />SectionlEzhibit : <br />! Class: Re ision •� _ C C <br />!_ TYpelSe9 (iLti�_ -_._ ix�/ /_p_ /_ /_ _�I —/ _ -_ -_. _. _-- -_ -_ -_ R�D `'�LD <br />Gass: [ Report [ Hydro [Gen &al <br />Doc Type. <br />----- ------ - - - -- JAN 2 3 2001 <br />[Application (Coal only) ❑Band [Enforcement [ InspeIXion <br />S�qT, oYq: N0 f¢Pp� PROJECT <br />OF C040 <br />Division al Minerals and ologY <br />en%kn -I �rk4 -Ot11 <br />CENTEX EAGLE GYPSUM COMPANY, LLC <br />PROPOSED HAUL ROAD TO EAST PIT <br />C <br />1/19/01 <br />ISSUED FOR RELEASE <br />MS <br />TITLE <br />°' <br />EXHIBIT C -7 <br />TYPICAL ROAD AND <br />SEDIMENT CONTROL SECTIONS AND DETAI <br />B <br />7/12/00 <br />ISSUED FOR RELEASE <br />CDT <br />A <br />6/25/00 <br />ISSUED FOR CLIENT REVIEW <br />BLK <br />REV <br />DATE <br />DESCRIPTION <br />APP <br />CARD <br />0 , <br />Knight Ph.-Sold iimiillluililiiini <br />— DISCLAIMER <br />KNIGHT RESOLD AND CO. PRODUCED THE DATA SHOWN ON THE DRAWING FILES <br />TECHNICAL INFORMATION AND KNOW HOW. RECEIPT OF THIS DRAWING DOES <br />USING BOTH <br />n, <br />C O N 8 U L T 1 N 0 <br />THE RECIPIENT HAS ANY RIGHTS TO <br />EITHER SUCH TECHNICAL INFORMATION <br />NOT MEAN THAT <br />OR KNOW HOW. <br />DESIGNED BY <br />MRD <br />I CHECKED BY <br />I JJG <br />DRAWING No. <br />ANY ADAPTATION OR MODIFICATION OF THE DATA OR DRAWING SHALL BE AT USER'S SOLE <br />RISK AND WITHOUT LIABILITY OR LEGAL EXPOSURE TO KNIGHT RESOLD AND CO. <br />1645D08C - 210 <br />DRAWN BY <br />CDT <br />APPROVED BY <br />