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<br /> � / . \\ \ \ LEUENI�
<br /> \ GENERAL NOTES
<br /> LeCy-A ON GF �NGQETE DIVERSION BOAC
<br /> f _-G IL / ANTE Plop_ �\, —tea olvE2sla° -HANN'�- � 1 ) FIGURES AND SECTIONS A THRU I -I ' SHOW CONSTRUCTION TO BE COMPLETED PRIOR TO REMO�AL�Of�VEGETATION AND T PSOIL IN PREPAiIA-
<br /> Tc�pl�t C;, r TION FOR WASTE DISPOSAL (PHASE II PILE CONSTRUCTION) .
<br /> }1o1VNF_L r R eiOLJNDAWY OF DQA-jAaF• Al2E LZCATION
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<br /> _ 2) FIGURES A AND B SHOW THE LOCATION OF THE STREAM DIVERSION CONSTRUCTED PRIOR TO PHASE I PILE CONSTRUCTION. TYPICAL
<br /> Gi2055-SF.CTIONoF �oLLEGTION Ct_EAN WATEF� DIVERSION 13EI�M SECTIONS C-C ' AND D-D' SHOW TYPICAL SECTIONS OF THE CHANNEL; THE CONFIGURATION SHOWN IN TYPICAL SECTION D-D' SHALL BE
<br /> �:� ��•��. �� � � USED FOR CHANNEL PORTIONS OF GREATER THAN 2% GRADIENT. APPROPRIATE EROSION CHECKS OR DROP STRUCTURES MAY BE USED IN
<br /> r•- — _ - pIT(yl PLACE OF RIPRAP TO PREVENT CHANNEL EROSION. THE LOWER PORTION OF THE DIVERSION SHALL CONSIST OF A CONDUIT DROP STRUC-
<br /> `'� TURE AND ENERGY DISSIPATION STRUCTURE. THE CHANNEL SHALL BE DEEPENED TO A MINIMUM DEPTH OF 4 FT FOR A DISTANCE OF 15
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<br /> FICaUIZ.E � � D'CAINAGE �I�IGK-�IC�N _7�.1"",EME � I FT UPSTREAM OF THE CONDUIT INLET. THE CONDUIT INLET SHALL CONSIST OF A 48-INCH DIAMETER CORRUGATED METAL PIP[ WITH A
<br /> o - INFLOvJ Fly 112L NJFF PREFABRICATED END SECTION CONFORMING TO THE FILL SLOPE. AT A CONVENIENT LOCATION DOWNSTREAM OF THE EXISTING ACCESS
<br /> ....�,
<br /> •M` •„r„�. �. .,. ROAD TO CATTLE LEASES, AN ELBOW WILL BE INSTALLED TO ACCOMMODATE THE BREAK IN SLOPE. THE MOST CONVENIENT LOCATION
<br /> LOLL;-- 71,J �� rt+t �
<br /> r FOR THE ELBOW SHALL BE DETERMINED AT THE TIME OF CONSTRUCTION. AN ENERGY DISSIPATION STRUCTURE SHALL BE PROVIDED AT
<br /> F : 3_ aAM GMp THE CONDUIT OUTLET , WHICH IS CAPABLE OF REDUCING THE DESIGN 57-CFS DISCHARGE TO A VELOCITY OF 5. 5 FT/SEC OR LESS.
<br /> 1 q�r M N I 3) FIGURE B SHOWS THE LOCATIONS OF THE EAST AND WEST DIVERSION DITCHES. TYPICAL SECTIONS E-E' , F-F ' , AND G-G ' SHOW
<br /> TYPICAL SECTIONS OF THE CHANNEL. THE DIVERSION CHANNEL WILL BE FORMED AS SHOWN IN TYPICAL SECTION E-E' FOR PORTIONS
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<br /> �EUEND 2cT .�.o OF THE EAST DITCH FORMED BY THE OUTSLOPE OF THE FILL AND GROUND SURFACE, WHERE THE GROUND SURFACE SLOPES TOWARD THE
<br /> °qO • • PILE. THESE DITCH PORTIONS WILL BE CONSTRUCTED AS NEEDED DURING PILE CONSTRUCTION. TYPICAL SECTIONS F-F ' AND G-G'
<br /> MIN
<br /> ^/ of AFFECTED `� STQEF M DIVEe51oN (-HANNEL �'` ° WILL BE USED WHERE THE GROUND SURFACE IS LEVEL OR SLOPES AWAY FROM THE PILE . TYPICAL SECTION F-F' WILL BE USED FOR
<br /> AREA ; o�c�'a?•^° PORTIONS OF THE CHANNELS OF LESS THAN 10% GRADIENT. TYPICAL SECTION G-G'' WILL BE USED FOR CHANNEL PORTIONS GREATER
<br /> taRP.o COVEIz.ED esr pk4seTLkA`S'ie �. �. , I Fr.MIN F �.ce CONCRETI= ►JAL . %..0 .Q' bl OF'T THAN 10% GRADIENT.
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<br /> � .. NATU2A1- C?I2AINACaEWAY D15Fb9AL MIN.(o TTIICJC
<br /> _ + 4) FLOW FROM THE EAST AND WEST RUNOFF DIVERSION DITCHES WILL BE ROUTED INTO THE SEDIMENT PONDS VIA A CORCRETE DIVERSION
<br /> 0 5� o' /' STRUCTURE AS SHOWN IN FIGURES A, H, AND SECTION I-I ' . TURNOUT GATES WILL BE PROVIDED ON EACH OF THE TWO OUTLET CON-
<br /> + DUITS TO ALLOW ROUTING OF FLOW TO EITHER POND. THE PONDS MUST BE OPERATED IN SERIES DURING PHASE II WASTE PILE CON-
<br /> STRUCTION. ALL FILL AROUND THE CONCRETE DIVERSION STRUCTURE SHALL BE COMPACTED AS SPECIFIED ON SHEET 9, ITEM 3.3.
<br /> � DETAILS OF INLET CULVERT INSTALLATION ARE GIVEN ON SHEET 7.
<br /> FI Ui2E A � STREAM DIVEf2SION I�{2AINAGE �LI2EA TYPICAL SE�ION F—F: ' EASTUPPER
<br /> �' �IA U�1P 5) THE CHANNELS FOR TOPSOIL RUNOFF COLLECTION DITCHES SHALL BE CONSTRUCTED TO THE SAME DIMENSIONS AS THE CONVEYOR COL-
<br /> AL AND WEST DITtMES �7' LECTION DITCH, AS DETAILED IN SECTION B-B' , SHEET 3.
<br /> L-OW UI2ADIEINT IOFr 1
<br /> 6) A WATER DIVERSION BERM SHALT_ BE PROVIDED AROUND THE TOPSOIL STORAGE AREAS AS SHOWN IN FIGURE A, SUCH THAT NO RUN
<br /> OFF
<br /> ,5 I�1 FROM UNDISTURBED AREAS MAY ENTER THE TOPSOIL RUNOFF COLLECTION DITCHES. THE BERMS SHALL HAVE A MINIMUM HEIGHT OF
<br /> 3 FT.
<br /> f_zfP4.E 6 7) RIPRAP MATERIAL FOR THE STREAM DIVERSION DITCH SHALL BE OF FREE-DRAINING DURABLE ROCK RANGING IN SIZE FROM 4 TO 21
<br /> FI(�U!2E N ; pLP�I OF INN DIVERSION INCHES IN DIAMETER, D50 = 12 INCHES. RIPRAP SIZE FOR ALL OTHER DITCHES SHALL RANGE FROM 3 TO 15 INCHES IN
<br /> E ST2 U GTU 2E ALL - 9 INCHES.
<br /> B) ALL CHANNNELS MUST BE MAINTAINED AS NEEDED TO PREVENT UNDUE EROSION. DEC 11987
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<br /> I ?) ALL CHANNELS ARE DESIGNED TO PASS THE 10-HR/24-HR FLOW WITH A MINIMUM FREEBOARD OF 0.3 FT OR GREATER. MINED LAND
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<br /> DESIGNED BY /AIM
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<br /> DRAWN BY , DL_ APPROVED BY
<br /> T ITN TYpI(AL SECTION Ca-U ANI� VIv�-'T SECTION I-I OF I�ON � DRAWING NO. ; �'�3 -Zo2C SHEET 4 OF q
<br /> EASZY�I�L S JpPE�2 r� T'IONS OIVE2SION ST2UCTUR—E
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