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TOPOGRAPHIC & BOUNDARY SURVEY <br />STEEP SLOPE/BUFFER DISCLAIMER <br />THE LOCATION AND EXTENT OF STEEP SLOPES SHOWN ON THIS DRAWING ARE FOR <br />INFORMATIONAL PURPOSES ONLY AND CANNOT BE RELIED ON FOR DESIGN AND/OR <br />CONSTRUCTION. THE PITCH, LOCATION, AND EXTENT ARE BASED SOLELY ON OUR <br />GENERAL OBSERVATIONS ON SITE AND OUR CURSORY REVIEW OF READILY AVAILABLE <br />PUBLIC DOCUMENTS, AS SUCH, TERRANE CANNOT BE LIABLE OR RESPONSIBLE FOR <br />THE ACCURACY OR COMPLETENESS OF ANY STEEP SLOPE INFORMATION. ULTIMATELY, <br />THE LIMITS AND EXTENT OF ANY STEEP SLOPES ASSOCIATED WITH ANY SETBACKS OR <br />OTHER DESIGN OR CONSTRUCTION PARAMETERS MUST BE DISCUSSED AND APPROVED <br />BY THE REVIEWING AGENCY BEFORE ANY CONSTRUCTION CAN OCCUR. <br />ENS) 18"1 <br />IE(SE.) 18"I <br />TOP OF STANDPIPE <br />FOUND <br />FENCE <br />SDMH <br />1AK� "� 12 EVGo <br />/ lFE E <br />/ 3E <br />' J / <br />/ RIM-461.47' <br />/ IE(NE) 12"CPP-453.12- <br />IE(5) 12"PVC 45292' <br />`FWND REBAR/CAP g <br />LS/ 22969 / 12055 SDMH <br />/ RIM=459.67' <br />IE(NEJ 12'CMP=452.32' <br />/ IE(SW.) 18"PVC=45227' <br />/ TOP OF STANDPIPE EL 55.92 <br />/ <br />I <br />/ <br />/ <br />KNOW ISSUE NO. 1: THE OVERFLOW STANDPIPE <br />LEAVING THE LOWER POND IS ABOVE A 16TH <br />AVENUE CB CAUSING THE POND TO BUBBLE OUT <br />INTO 16TH AVENUE. �;g, <br />REMEDY: OVERFLOW WAS LOWERED TO BE <br />APPROX. 4" BELOW CB RIM. <br />IE(SW.) 24-CPP. <br />r� <br />4 <br />N <br />/ <br />HOUSE <br />56,4' ti <br />4,s„ R <br />F <br />a <br />_,A,�Y1 an <br />e SDMH- <br />21M 471.71 <br />T <br />IE(S) 18"CPP=462J6' <br />n <br />PT <br />o <br />8L <br />f <br />"T <br />�D <br />, <br />\ SO <br />\rS9 <br />a� SD <br />`SD <br />•::4ea 7 <br />CB (TYPE <br />IM-471.05 <br />IE(NE./SE) 1 <br />=467,05' e <br />N.) WPVC-462.77' <br />CB (TYPE 1) <br />RIM=471Af <br />IE(NW.) 15"PVC=466.42 <br />IE(SE.) 15"PVC=466.32' <br />POND <br />CB (TYPE <br />RIM=457. <br />IE(N.) YPVC=455. <br />(SW/E.) 12"PVC=454. <br />IE(S.) 8"PVC-454. <br />�E(N.) 6"PVC=463.67' <br />Zr12 EVG a <br />"EVG <br />s. <br />of <br />o <br />r EV m <br />NO PARKING" <br />a <br />• l <br />t4 <br />'7 <br />w <br />4 <br />so <br />N IE( <br />�7 <br />50 <br />Wes/ 9� <br />IEIE.) <br />50 <br />a' <br />?� <br />GONG <br />e <br />-IXI <br />RAMP <br />� <br />w GA. <br />�0 <br />� <br />w� <br />y <br />IE(NE.) <br />/E(S.) 12'1)1=449.08' <br />NEW ISSUE NO 1: THE ORIGINAL DESIGN ASSUMED <br />A DISCHARGE ELEVATION 445.50, SURVEY SHOWS IT <br />WAS INSTALLED AT 449.25. <br />THIS REDUCTION IN SLOPE, REDUCED THE OUTLET ( IN FEW ) <br />PIPE FLOW CAPACITY BY APPROX. 47 % . 1 1 INCH - 20 FT. <br />•3b <br />so_ <br />SO <br />" so <br />POND <br />NO PARKING" <br />EVG .al^/I2" EVG <br />IE(SE.) 18"PVC=465.56' <br />n� <br />SD <br />c" <br />\so <br />F\SD\ TF� <br />SO \ <br />O <br />IE(NE.) <br />E(SE.) 6' <br />EVG • 12' EVG <br />—SD— <br />�� S[MAH —SD—SD H -SD—/45, <br />DASD S <br />RIM=45J.14' 3 CB (TYPE 1) <br />1E(E.) 18"PVC=451. p RIM=a60.09' <br />-lQ _-�EIE(SWJ 18"P"PVC.49' <br />NEW ISSUE NO. 2: THE OVERFLOW SYSTEM, WHICH IS INTENDED TO <br />cH (TYPE 1) 08 (TYPE 1) ALLOW RUNOFF TO BVPASS THE PONDS IF THE PUMPS EVER FAIL, <br />RIM=as7.oa' RIM (soup)=a5z CONNECTS TO COLLECTION SYSTEM IN THE BOY SCOUTS PARKING LOT. <br />e <br />TREET <br />IGI <br />+NN <br />PE 1 <br />155.7J <br />12"PVC=453 <br />4 <br />NSISBLEBILE <br />PIPE) <br />CB (TYPE 1) <br />RIM=456.14' <br />E(E./SW.) 12"PVC <br />CB (TYPE <br />T� <br />r <br />D_ <br />SD _ <br />LEGEND <br />ASPHALT SURFACE <br />BUILDING <br />— �— CENTERLINE ROW <br />0 CONCRETE SURFACE <br />RETAINING WALL <br />FENCE LINE (CHAIN LINK) <br />V FIRE DEPT CONNECTION <br />C3 INLET (TYPE 1) <br />® INLET (SOLID) <br />Lo P O UGHT POLE <br />FL MONUMENT IN CASE (FOUND) <br />PST❑ POST <br />PH❑ POWER HAND HOLE <br />P❑ POWER METER <br />® POWER TRANSFORMER <br />O REBAR AS NOTED (FOUND) <br />—SS— SEWER LINE <br />O SEWER MANHOLE <br />STORM MANHOLE <br />d O{ SIGN (AS NOTED) <br />SD— STORM DRAIN UNE <br />SIZE TYPE Oo TREE (AS NOTED) <br />m WATER GATE VALVE <br />—W— WATER LINE <br />WVW WATER VALVE <br />FOUND <br />R®AR/CAP <br />KNOW ISSUE NO. 2: THE OVERFLOW STANDPIPE <br />SDMH LEAVING THE UPPER POND IS ABOVE THE EDGE OF <br />RIM=471.65' THE RETAINING WALL. CAUSING THE UPPER POND <br />1E(NW.) 1z"cw=aso.as' TO OVERFLOW BACK DOWN TO THE LOWER POND <br />IE(SW.) 12"CPP=450.65' <br />AS OPPOSED TO THE INTENDED DISCHARGE IN THE <br />NORTHWEST CORNER OF THE SITE. <br />REMEDY: A BERM WAS CONSTRUCTED TO PREVENT <br />�.p OVERFLOW DOWN TO LOWER POND. <br />I <br />CB (TYPE 1) <br />RIM=471.28' <br />• y F y IE(NE.) 12"PVC=466.23' <br />�8P / IE(NW.) 15"PVC=466.08' <br />SIGN <br />/-"STOP" <br />F° <br />s SIGN <br />SIG0 CURET" <br />Y <br />I <br />sm. _.. .•�._..... oan <br />iW <br />D ED SIGN .� <br />NO PARKING' CB (TYPE 1) <br />RIM=474.35' <br />I IE(W.) 12"PVC=471.65' <br />IIIIIF y, IE(5,) s"PVC-47TB5! <br />t <br />N 89'06'30' W 802.91' <br />• •'' .` <br />THE LOWEST CB IN THE BOY SCOUTS SYSTEM, BASED ON THE <br />INFORMATION WE HAVE, HAS A RIM OF 451.68. <br />BASED ON OUR MODELING DURING ANY EVENT GREATER THAN A 2 <br />• • "� <br />«. A -• - " +"" <br />• >° e '"' ' <br />vsr <br />U <br />YEAR EVENT, THE PUMPS HIGHLIGHTED RED SURCHARGE AND <br />SDMH <br />,� <br />ULTIMATELY BUBBLE OUT OF THE LOWEST CB IN THE BOY SCOUTS <br />RIM=467.16' CB(TYPE <br />c (TYPE 1) <br />PARKING LOT. <br />IE(N.) 2o"CPP=45o.4C , <br />IM=45zts' <br />IE(W.) 18"PVC=a50.a6' (FILLED) <br />(NO N51BLE PIPE) <br />Lu <br />W <br />i <br />� 3 <br />C/) w <br />0 <br />< W O <br />Z � Z m <br />Z W <br />O <br />m oT z I.- rn k <br />0 y U o � <br />0- h i m W <br />W <br />o <br />a" <br />O <br />O <br />0) <br />O) <br />W <br />O <br />C <br />C <br />OJ <br />0) <br />O) <br />C <br />C <br />< <br />Q <br />� <br />N <br />2i <br />D) <br />(1) <br />@ <br />3 <br />3 <br />CL <br />N <br />Q <br />m <br />� <br />N <br />N <br />O <br />'t <br />CU <br />V <br />OD <br />Lf) <br />U) <br />v <br />Uri <br />■ 1 <br />V) <br />UI <br />Dl <br />C <br />0 <br />ra <br />111 <br />o. <br />O <br />W <br />' ■ <br />O <br />'-I <br />JOB NUMBER: <br />200271 <br />DATE: <br />0310612020 <br />DRAFTED BY: <br />RSN <br />CHECKED BY: <br />WB <br />SCALE' <br />1" 20' <br />REVISION HISTORY <br />SHEET NUMBER <br />2OF2 <br />