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OUTLET RISER, SEE DETAIL C <br />I <br />2 <br />EXISTING GROUND 1 <br />(ASSUMED DATUM) � 1 <br />i <br />L XCAVATE 4' <br />18 -INCH LOW -LEVEL —/ <br />OUTLET GATE AND TRASHRACK <br />DAM SECTION, IMPOUNDMENT #2 <br />SCALE: NONE <br />DAM CREST AT 7409.9 <br />TOP OF RIS <br />740 <br />SPILLWA <br />7407. <br />W740 <br />w <br />z <br />0 <br />I- <br />a <br />w 740 <br />Lu <br />w <br />w <br />U <br />a <br />LL <br />It <br />7 <br />N 740 <br />INVERT 7401. <br />SEDIM <br />3TOR/ <br />740 <br />739 <br />739 <br />ELEV. 7401.8 <br />22' �ELEV. 7409.9 <br />PROTECTIVE VEGETATION <br />1 L 3' MIN <br />1 <br />12' MIN <br />f � <br />75i <br />i <br />ANTI SEEP COLLARS <br />CAPACITY (ACRE FEET) <br />1 <br />TRENCH <br />3.2 2.t$ 2.4 2.0 1.0 1.2 ..8 .4 0 <br />BAPPROXIMATE CAPACITY CURVES <br />Lrtt!Ty, t.t;cv .rt Illy i:tuaylttiiye, that tn3s R.L, <br />t".12-11 Orr• t.re: in atcordahce with stand.lyd <br />3 1.1 t' T.Ct•. ., d une er the direction <br />tt, rt rr+ll te; t•tl _II'uL•.- ICetel tn, tnceJr or (JCU]O <br />- - <br />L <.:,, a acmI,,,,te .I. ^.tI r oreserita t i ve. <br />6 <br />Area (acres) <br />NT i2 <br />ti Urn!trtl ?. fUthny <br />t - ILOTAm i- ,�!'.:.l r•t'ttl !'LYITt •'a](tILyT )•I KT]ht °t'!' <br />REBAR SCRE <br />-" -4&4 BARS A <br />C C SPACING <br />3' <br />HIP RAP <br />EXISTING GROUND (ASSUMED DATUM) <br />18••CMP <br />ELEVATION <br />OUTLET RISER <br />SCALE: NONE <br />�C <br />COMPACTED EMBR <br />1B "CMP <br />s.: <br />COMPETENT FOU <br />MATERIAL <br />16 GAGE GALVANIZED CMP OR <br />RCP OPEN AT TOP <br />TOWS (MIN.) OF SLUTS IN <br />P PORTION OF RISER. <br />CH SLOT 2" WIDE BY 6" LONG <br />;LOTS PER ROW AT <br />PROXIMATELY 142.5" C SPACING. <br />THE EMBANKMENT AND THE OUTLET PIPE WERE FOUNDED ON BEDROCK OR <br />COMPETENT FOUNDATION MATERIAL AS DETERMINED IN THE FIELD BY HE <br />ENGINEER FOUNDATION STRIPPING AND PREPARATION OF THE FOUND - TION <br />AND ABUTMENTS WERE SUBJECT TO THE APPROVAL OF THE ENGINEER <br />THE EMBANKMENT WAS CONSTRUCTED IN ACCORDANCE WITH APPROVED <br />SPECIFICATIONS. THE FOLLOWING ARE MINIMUM REQUIREMENTS. AND ARE NOT <br />ALL INCLUSIVE OF THE SPECIFICATIONS <br />AI THE EMBANKMENT WAS CONSTRUCTED OF RELATIVELY IMPERVIOUS <br />MATERIALS CONTAINING AT LEAST 30 PERCENT PASSING THE NO 200 <br />SIEVE AND SHALL HAVE NO PARTICLES LARGER THAN 51NCHES <br />BI THE EMBANKMENT WAS COMPACTED TO AT LEAST 90PERCENT RELA. <br />TIVE COMPACTION IN ACCORDANCE WITH ASTM D 1557 <br />RIPRAPPED OPEN CHANNEL EMERGENCY SPILLWAY WAS CONSTRUCTED TO <br />PROVIDE A RESIDUAL FREEBOARD OF AT LEAST 1 FOOT DURING THE 100 YEAR, <br />24 HOUR STORM EVENT THE ALIGNMENT AND CONFIGURATION OF THE EMER <br />GENCY SPILLWAY WAS DETERMINED DURING FINAL DESIGN AND AFTER THE <br />FINAL DESIGN FIELD AND LABORATORY INVESTIGATIONS ARE COMPLETED <br />4Ft X 4Ft <br />ANTI SEEP COLLARS <br />(;eIvelD <br />MINED LAND <br />ISION <br />RECLAMATION D V <br />NOTE: PIPE WAS INSTALLED IN COMPETENT <br />FOUNDATION MATERIAL. DEPTH OF TRENCH <br />WAS DETERMINED IN THE FIELD, <br />DRAINAGE AREA (DA) 48.2ACRES <br />OtO (PEAK FLOW 10 YEAR /24 HR STORM) - 11.0 CUBIC FEET PER SECOND(cfs) <br />OIOTot.(TOTAL FLOW 10 YEAR /24 HR STORM) - 0.80ACRE FEET (Ac /ft) <br />025:20.9 of$ <br />025 Tot:1.62 Ac /Ft <br />0100:29.7 cfe <br />0100 Tot:2.36Ac Ft <br />OUTLET PIPE SECTION <br />SCALE: NONE <br />SPILLWAY WIDTH - 10' <br />SPILLWAY GRADE -,2% <br />SIDE SLOPES 2:1 <br />0100- DEPTH OF FLOW c 0.8Ft <br />V100- 3.3 fps <br />FROUDE NUMBER - .87 <br />nec❑ -- <br />Oenveq Colon4o <br />SUN COAL COMPANY <br />Routt Co., Colorado <br />I IIhII IIII IpN III IIN !�N I005608 IIN <br />