Laserfiche WebLink
POND HG-8 <br />Cross-Section <br />Not To Scale <br />Tap O! Emhankmeot <br />,4s-Built Elevaticn 7,39350' <br />Emergency Spillway <br />Invert Elevation <br />7,389.30' <br />G'atwall Railing (Existing/ <br />/~ ~ <br />~ 12" CMP Riser IExistingl <br />~ Elevation 7,38290' ~25Yr./24Hr. Event Elevation 7,.388.!3' <br />T <br />/ As-Built J~ ~ ~ `~, <br />Emergency Spillway y ~ <br />Invert Elevation <br />7,386.50' <br />- - - ~ l <br />!overt Efevetion X381.50', <br />18' CM11P Outlet Pipe lExlstingl <br />~lOYr./24Hr Event Elevat/on 5.386.35' <br />`/ ~ <br />------------------------------------------~----(Proposed Operational Water Level <br />~~ Proposed 4" HDPE Decant Pipe Elevation 7,384.80', Permanent Pool 6.30 Ac-Ft. <br />~~-- Concrete Structure lE.ristingl <br />r 18' Gated Valve lE.risting) ~ 3-Yr. Sedtment Storage <br />Efevetion 7,979.01' <br />~~- <br />- . _ 1995 Pond Bottom <br />_ Elevat/on 7,379.00' <br />` As-Built Pond BotlomJ T / <br />Elevation 7,376.00' <br />sunnrtm NOTES: <br />o+~AREG/Sre,,. 1.1 ]995 Pond Bottom Eleva GOn 8 12° Cb1P Riser Elevation Taken From ]995 Sediment Survey, <br />a~s, <br />~~`E Performed By Epp 8 Associates, October 1995. <br />~ <br />- - 21 As-Built Emergency Spillway /n vert Elevations & As-Bmlt Pond Bottom Elevation Taken From Exdtbtt <br />~~l` <br />vj,~~ <br />" U-1, Pond HG-8 Emergency Spillway TR, Submitted October 19, /98.5. <br />` <br />a r ..i ~$ <br />` <br />/ <br />ms <br />''~ <br />@ <br />~ <br />~~ <br />~ 3/ Existing Discharge Structure Features & Elevations Taken From Exdibi[ U-2. Pond HG-8 Revismo, <br />< <br />n <br />iw,„e <br />x <br />i, <br />' Submitted August J0, 1987. <br />Po/rra C q to/e mar /ors mac <br />wos p/ OreO unOP/ ,r SuOer Yr SrOn end a// <br />the rn/o al n senled hereon ue q ,,,,°,pd /ysy,w smeW°1Lyhnm /,rrgeq me Ma L4vmw smeW°16fhnm /y/g0' Iw <br />and cone / me es/ of my ow/eOge <br />,...,. .., r,.,... 11~ i _ nEr eensio°s o.rt oescYms. ow.... e. <br />rraMwtrlx L- <br />H-G COAL COMPANY <br />Ha_Yden Gulch Coal Mine <br />POND HG-8 CROSS SECTION <br /> <br />Ia Sexr <br />