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A PORTION OF THE NW 1/4, SECTION 12, T 28 N, R 4 E, WM
<br /> E!. SDAIH aD Q
<br /> TOP 43273
<br /> IL azd s 12~(L) E< sDMH CONSTRUCTION NOTES:
<br /> IE 427E 15" (N,S) TOP 434-35
<br /> I IE 429.5 11" (SL,W) Oj SEE DETAIL SHEET SP-6 FOR FLOW RESTRICTOR
<br /> _ EX. OVERFLOW INLET /► MANHOLE.CONNECT TO PROPOSED SOMH #4 ON N O RT H
<br /> �b I so TOP 435.52 EXISTING 18"STORM SEWER IN HARDESON ROAD. OD
<br /> -- ., ' IE 429.5 12'P Vc(NI"
<br /> I I'I ,� j' _ p O CONSTRUCT SDMH OVER EXISTING 18"STORM �� Z >
<br /> - ;-- ----- _-- _-__- SEWER. RESTORE STREET PAVEMENT PER 0 20 40 80 Q
<br /> O ___ __ C.O.E. STD DWGS 316&610. J
<br /> CL
<br /> %•a '�,� _ ' --_" O 20 FOOT WIDE MAINTENANCE ACCESS DRIVE. 0 I
<br /> ,� Al �� -._�� 4'CSBC OVER 12"RECYCLED CONCRETE. Z Z
<br /> IMI G, `
<br /> 1p
<br /> Jim Alit 430 - , � �_i� _ O¢ INSTALL DOUBLE 20'WIDE CHAIN LINK SWING GATE BON DESIGN BASIS �WN/ 0
<br /> r ���� ON ACCESS DRIVE. Q > LL U
<br /> THIS INFILTRATION BASIN IS DESIGNED BASED ON AN INFILTRATION RATE
<br /> �t, `_-1 Isti�II!_•3��w�4.AT.�, OF 1.5 INCHES PER HOUR FOR 29.8 ACRES OF TYPE CFORESTEDCC —
<br /> q nit i \\\' .
<br /> \ 427 - 7� „� CONCRETE DRIVEWAY TYPE 1
<br /> ,\ \�\\ - _ _ CONDITION CONVERTED TO 80%IMPERVIOUS AND 20%LANDSCAPING.
<br /> PER C.O.E. STD DWG 307.
<br /> 5 CONSTRUCT 20 FOOT
<br /> ' II, - 7HE INFILTRATION BASIN WAS MODELID USING THE WESTERN Z Z Q
<br /> 7 `�__ 11 47-1-,-1;-'-:,,---'6'1.--44110111,.-4: _______.7.1___1:_i
<br /> ---- O INSTALL CATCH BASIN TYPE A ON EXISTING 12" Q LLIWI
<br /> ,�i .� �,D s . � STORM SEWER AS SECONDARY OVERFLOW. INSTALL WASHINGTON HYDROLOGY MODEL(WWFiM2012). QI I— f,
<br /> Alt 4.1,H ii�/ ,! ���'�����poi BEEHIVE GRATE PER DETAIL ON SHEET SP-6. V r
<br /> p 1 • ���� �\\ �_ � �1Si�1 - _ ��"-' RIM ELEVATION=434.50. Z Z `n W
<br /> I • "` �!�I��' / EXISTING IE(12')= 429.9(NW) Q V J �
<br /> 427 p_... -,.. . "':',r.�4, �' � �1'�i4/ I,cifi�e\ -� — W
<br /> �U!�� `` `. iii ri.�' 1/:I1����. F
<br /> 5 ` ��= ry�' !�D w�� ►! SDMH FOR CONNECTION BY LOT 2 AND FUTURE Q �
<br /> © `,�"i�1� ��------=
<br /> _- � S'S ��'. , .`�� . DEVELOPMENT. FUTURE DEVELOPMENT TO PROVIDE W W
<br /> �ql�� -.435 �� �.,,��,I INDIVIDUAL WATER QUALITY FACILITIES PRIOR TO F-
<br /> ,.:HG,1��j�9�`„�=� a=do=s" , to �� Gid�� 4%,'_ �� Z
<br /> �\-\ �� V" �� 440 v - ��Rm.'s.: \ i I���`,� ��3�����- -_ CONNECTION. J
<br /> 7
<br /> I�Qr -�S� .•.Lsi _a�i_ ��'�...�� "�-�•�:!'---L17=-1-11--
<br /> /
<br /> -- g HYDROSEED ALL EXPOSED SOILS.FINAL LANDSCAPING Z 1.1 v/
<br /> Hot Hittite rii� �q y� � ��4 �_ Z'-gT���� •tV9S8` �Ati --- PLAN TO BE SUBMITTED WTH FUTURE SITE
<br /> Y !i�'- �� �.� q.•' y q *��• t`-t�,��* �• i' i�r --- - DEVELOPMENT PLANS.
<br /> v— �• N -
<br /> �� 1 II'Ip.AlrEN IV.4 ryj�6 ,�4arrA-.�iL � a���, 011044.1104 _ _ O INSTALL 6 FT HIGH PERIMETER CHAINUNK FENCE.
<br /> i ' ,1 , ��3a�7/�� 'I��i•//.• �• -Vii- p.� �,- \\0-0-•• �-� SSG _
<br /> �' 1 �•'y��i•� ♦IB.NJrs.to i�� ammom �.�l.� •• ii s �j _ lO INSTALL EROSION CONTROL MAT,NORTH AMERICAN
<br /> D. SDM-I I I I I itpry•iG� ..rl I�IIu i�:����E� �����t A__p`-Aa ie 1 .. / GREEN SC150.
<br /> TOP 438.73 I' I IQ1, r�i�� ��gni Ver ���ailTeral Wil ,�i6��-�•� 11 --- )e OVEREXCAVATION AND PLACEMENT OF SAND NOT IN
<br /> IL 435.0 18" IIIr • .1litelirlitiFIL �( •\-114, / �- OCONTRACT.I ®1 Efflr�AUTAI484Ilit �411111M1 ..���:��a _ �t
<br /> I G �� Tw =�— HARDESON INFILTRATION BASIN NOTES:
<br /> I
<br /> I / / /�`-'�` 1— 1. CONTRACTOR TO OVER-EXCAVATE A MINIMUM OF 5 FEET BELOW THE BASIN L ^'
<br /> iI / 1. / 1 // /I D 7 �� BOTTOM AND REPLACE PATH 5 FEET OF WASHED CEMEX SAND. THE POND y"
<br /> III ' >I l 1,., r "- ,( BOTTOM SHALL BE EVALUATED DURING CONSTRUCTION BY THE ENGINEER TO 4,4'
<br /> 1 I I I (� ( 31H 1 '�� - � CD DETERMINE IF ADDITIONS EXCAVATION IS REQUIRED TO REMOVE ALL EXISTING FILL J'' • E"
<br /> �• �J -/ T �j MATERIAL. 'e
<br /> j • ,
<br /> I ! I /// , I �I ,� 1 ` + (' V1 2. A PILOT INFILTRATION TEST(PIT)IS•TO BE CONDUCTED BEFORE CONSTRUCTION
<br /> I �Ij) •1 /'11 , , 1 , �lZ CV
<br /> A I I I I, I 3. PERMANENT SLOPES ADJACENT TO THE POND SHALL BE CUT INTO THE DENSE
<br /> I 1 I I DC ' I / % NATIVE SOILS TO THE SOUTH AT 2H:1V FOR PERMANENT SLOPES AS SHOWN.ANY D)0) E,
<br /> 0 1 I IO;, /' I PERMANENT SLOPES THAT ARE CUT INTO EXISTING ALL THAT WAS NOT Z W (42 E
<br /> I / POND GRADING TO BE / m $'
<br /> I PREVIOUSLY COMPACTED TO ENGINEERED STANDARDS SHALL BE REMOVED, < v,
<br /> / 1 j //,,,/'// i COORDINATED WITH MINING 'c
<br /> ,II I � PREPARED AND COMPACTED IN ACCORDANCE WITH THE SLOPE RECONSTRUCTION <Q p
<br /> I i RECLAMA710N GRADING �• N
<br /> T
<br /> I ) 1 ��/ Ir DETAIL W—
<br /> $ r 1
<br /> •
<br /> II ' I 1 i�11 /( 1� i / M / / °0 m3v
<br /> m as
<br /> Qd) g ma
<br /> if aD iti=11
<br /> = >
<br /> 3w
<br /> O N
<br /> '550 -.. - 550
<br /> 5 540- _..._ ___. __:. _ ___.. _.... --.:. ____. __... -....... __... --- -
<br /> _...__._�-.- 540
<br /> 530- ____ ___. ____- ____- __--- __.. ___ ___.. __.._ ---- --rte 530 REVISIONS: APPD.
<br /> i
<br /> i.
<br /> - i
<br /> 520 .. - / - .- ._ ...------ 520
<br /> EXISTING GRADE\ i/
<br /> mo
<br /> 510- _.__ _.. ____. ____. __.__ I. _._. __. ......... w _...__...._�.510
<br /> O 7
<br /> i
<br /> i
<br /> .I 500--- - -- - - ----- --._____._ _..----------__------7 --- .............POND GRADING TO BE ......._ ------ ---_ :..----- ------ 500
<br /> COORDINATED WITH MINING
<br /> RECLAMATION GRADING
<br /> 490— ---_ ____. _.__. ____. ___ __... ____ ✓- ___._ __. ____ _._ __..
<br /> 7
<br /> PAD ELEV=484.0 _..__. 490
<br /> DATE: APRIL 2017
<br /> 1 DESIGN: Jul
<br /> 480 --__._-_ __-...._-.-_.-..-� _—.-480
<br /> /
<br /> i 470- ____. ____. ____. / .. DRAWN: CLE
<br /> _-_ __- __ ___... t___ ____ ____- _____ - ..._...._._. _..__-__.--._- 470 CHECKED: MS
<br /> 8 _ / REVISION
<br /> w / NUMBER:
<br /> c3460- -___ ___. ___ _-_. __.... __ ____. ) ____ . ____. __.. ._....... _.... _ .. ___._ _.._ __. _..._..._._-460
<br /> B w / SCALE:1%40'
<br /> i 6' WIDE BERM /'
<br /> --_ --` __---__ _ 450
<br /> LL 70P=.435:0 /
<br /> .2 FINISHED GRADE 7 - - - - • - PROJECT NUMBER:
<br /> = w
<br /> 440— a 7-'.... t� 440 CEMX00000005
<br /> 0
<br /> mm a 434.09 -.__- /
<br /> c _
<br /> 3
<br /> 430- -..... -1 ____. __.. ____- __.t i _. _.. _..._ _._ _... _.... ._ ___.._...-430 DRAWING FILE:
<br /> 1 - EC-006-18LEMXO _Div9.dwg
<br /> as -- _ _ _ __ _ ___ - - - -
<br /> .. 1......... ..__.___.._..:._
<br /> �< 420-------------- --..._. .__... --- ---. ........... . ....._ ---- ......:-- --......_ ...:...... _ ._.._.... _....:.. --._420 SHEET N0.
<br /> BOTTOM OF INFILTRATION BASIN 5 FT DEPTH CLEAN.
<br /> Q ELEVATION 427.0 PIT SAND r1��
<br /> 3 410 I l I I I� 1 I I 1 I I I I `\J
<br /> 3 0+00 1+00 2+00 3+00 3+70
<br /> 3 c' SECTION A-A: HARDESON INFILTRATION BASIN OF 9
<br /> sA 1"= 20'HORIZONTAL&VERTICAL
<br />
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