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1770 <br />of <br />C:\SDSK\PROJ\2871.dwg\03-241-00\2871gdp3a.dkg <br />SMH <br />.3.31 <br />LOT 15 <br />BLOCK 3 <br />I �( <br />-+ rr- <br />rrr <br />rrr <br />r rr <br />rri <br />rri <br />\ <br />GRADING & DRAINAGE PLAN <br />LOT 14, BLOCK 3, COLORADO TECH. CENTER <br />5'x5' GRATE <br />INLET <br />RIM 5328.37 <br />STORM MH <br />RIM: 5324.53 <br />ST MH <br />RIM 5324.23' <br />INV: 5321.10 <br />CITY OF LOUISVILLE, BOULDER COUNTY, COLORADO <br />1.15 ACRES, MORE OR LESS <br />u <br />LOT 27 <br />BLOCK 3 <br />00'41'59" <br />0.)2/ <br />4C DRAINAGE <br />EF SEMENT <br />CATCH PAN <br />.1 <br />SPILL PAN <br />AROUND <br />ISLAND <br />// I <br />J <br />f <br />I <br />a <br />a <br />2 <br />SPILL PAN <br />AROUND <br />ISLAND <br />-J <br />w <br />0 <br />w <br />w <br />V) <br />50 <br />24:83 <br />24.80 <br />■ <br />s <br />1 <br />u <br />a <br />1 <br />■ <br />F.F. = 1325.50 <br />24.50 <br />SPILL PAN <br />AROUND x <br />25.68 <br />ISLAND <br />4.75 <br />1 <br />1 <br />6 <br />M <br />25.00 <br />"4.00 <br />INSTALL--- <br />- <br />_ -'- -"TA CY-EARTH TONED 'FYP <br />--- -_-. 5324 <br />23.95 <br />24 00 <br />dL' <br />r <br />• 1.1 CY- EARTH TON <br />RIP RAP (4 w'x5' I) <br />(SEE DETAIL) <br />RIP RAP (4 w'x5' I) <br />TYPE L (SEE DETAIL) <br />24.00 <br />wel <br />:14-11Z <br />100 -YR W.S.E.L <br />/ 5324.03 ' <br />IN$TAU. <br />30" WALL <br />(SEE ARCHITECTURAL) <br />El PHONE PED. <br />. J ..00'107- <br />wv <br />___- c <br />_ ---------36 RCP ----------- 0.48% <br />---___---------------------_ __----- -_��� <br />EXIST. CL - TAYLOR AVENUE <br />EXIST. SMH <br />RIM: 5322.18 <br />INV: 5311.70 <br />STORM MH-- - <br />RIM: 5322.87 <br />INV: 5318.02 <br />1 <br />3 <br />800 OI <br />C <br />® I 0 <br />cfl <br />i�1MY- J <br />(n <br />O <br />N-) <br />12' WIDE EMERGENCY <br />-OYERELOW_(5324.5Q) <br />[WITH 3.4 CY TYPE VL RIP RAP] <br />(SEE DETAIL) <br />POND A <br />3' <br />6"I 2' 16" <br />-. <br />1 <br />18"0 RCP <br />#4 REBAR ON 12" CENTERS / <br />BOTHWAYS (TYP.) <br />18"0 RCP <br />#4 REBAR ON 12" <br />BOTHWAYS (TYP.) <br />5' <br />INSTALL CLOSE MESH GRATE IN ACCORDANCE <br />WITH CDOT M & S STD. M-604-11 OR <br />APPROVED EQUAL <br />EL 24.00 <br />CENTERS/ <br />1%) <br />EL 19.00 <br />EL 19.50 <br />CONCRETE OUTLET STRUCTURE <br />WITH CLOSE MESH GRATE <br />LOT 13 <br />BLOCK 3 <br />INSTALL <br />'PAN OPEINING' THROUGH SCREEN WALL <br />(SEE DETAIL) <br />I INSTALL <br />)POND A RELEASE STR. <br />1-3'x3' TYPE -C INLET W/CLOSE MESH GRATE <br />TOP OF BOX: 5323.90 <br />INV. IN: 5319.00 <br />INV. OUT: 5318.75 <br />8" S/L ® 0.52% <br />NEENAH <br />R -7512-A <br />TRASH RACK <br />I o <br />EL 19.52 <br />DETENTION POND A <br />ELEVATION (FT.) ACCUMULATIVE VOLUME (C.F.) <br />5319.50 <br />5320.00 <br />5321.00 <br />5322.00 <br />5323.00 <br />5324.00 <br />5324.03 <br />5324.90 <br />RELEASE RATE <br />0100 = 0.15 CFS <br />0 <br />120 <br />899 <br />2,265 <br />4,219 <br />7,177 <br />7,264 <br />11,234 <br />4 REBAR ON 12" CENTERS <br />BOTHWAYS (TYP.) <br /><= 100 -YEAR VOLUME <br />TOP OF POND <br />5324.90 <br />ELEVATION <br />NEENAH <br />R -7512-A <br />TRASH RACK <br />DRAINAGE LEGEND <br />WM AMr .I MAIM <br />BASIN AREA (ACRES) <br />BASIN BOUNDRY <br />SUB -BASIN <br />10 -YEAR RUNOFF COEFFICENT <br />100 -YEAR RUNOFF COEFFICENT <br />EXISTING CONTOUR <br />PROPOSED CONTOUR <br />❑ PROPOSED CATCH BASIN <br />PROPOSED STORM SEWER <br />PROPOSED STORM MH <br />EXISTING PIPES <br />DRAINAGE FLOW ARROW <br />TAYLORAVENUEI <br />(60' R.O.W.) <br />2.5 - 5' <br />1.5' <br />t r b1,- <br />EARTH TONED C <br />TYPE L RIP RAP <br />TYPE II <br />BEDDING <br />GEO-FABRIC <br />TREVIRA SPUNBOUND1114 <br />(OR APPROVED EQUAL <br />STH TONED ['ET'] RIP RAP DETAIL (EXPOSED) <br />N.T.S. <br />4 1/2"i 1.0' 1 <br />I <br />-1 1/2" <br />1 1/2"R, ip 1" <br />CONCRETE 116" <br />4 1/2" 1.0' <br />1/4"R -1 1/2' <br />1 1/2'12 <br />CONCRETE <br />1" <br />6" <br />6" VERTICAL CURB (CATCH PAN) 6" VERTICAL CURB (SPILL PAN) <br />• <br />N.T.S. <br />3' <br />SCREEN WALL <br />10" OPENING <br />1 <br />PAN OPENING DETAIL <br />THROUGH SCREEN WALL <br />N.T.S. <br />12' MINIMUM <br />W/ BURIED <br />TYPE VL 5324.90 <br />RIPRAP N / • ELEVATION <br />5324.50 <br />ELEVATION <br />DETENTION <br />POND <br />12' EMERGENCY OVERFLOW <br />N.T.S. <br />EXIST. ' SMH <br />RIM: 4320.77 <br />INV: 51310.10 <br />i <br />N.T.S. <br />ELEV.: 5323.75 <br />If CONCRETE PAN <br />STONES WITH TYPICAL STONE DIMENSIONS THAT ARE EQUAL TO D50 <br />AND LARGER SHALL BE PLACED AT THE TOP SURFACE WITH FACES AND <br />SHAPES MATCHED TO MINIMIZE VOIDS AND FORM AS SMOOTH A SURFACE <br />AS PRACTICAL. DUMPING AND BACKHOE PLACEMENT ALONE IS NOT <br />SUFFICIENT TO ENSURE A PROPERLY INTERLOCKED SYSTEM. THE <br />MATERIAL MAY BE MACHINE -PLACED AND THEN ARRANGED AS NECESSARY <br />BY THE USE OF GRADALL WITH MULT1-PRONG GAPPLE DEVICE OR BY <br />HAND TO INTERLOCK AND FORM A SUBSTANTIAL BOND. EXCAVATION <br />FOR TOE OR CUTOFF WALLS SHALL BE MADE TO THE NEAT LINES <br />OF THE WALL. ALLOWANCE WILL NOT BE MADE FOR WORK OUTSIDE <br />OF NEAT LINES. <br />12' <br />1.5 <br />0.5' <br />5324.90 <br />ELEVATION <br />-0.5' <br />TYPE VL RIP RAP <br />1.5' <br />\,5',k4(56 <br />I.;Di'ATI ON <br />'°/ TYPE II <br />BEDDING <br />3.0' <br />,CURRIED RIP RAP DETAIL <br />N.T.S. <br />2" <br />3' CONCRETE PAN DETAIL <br />N.T.S. <br />CM OF LOUO$VOLLI! <br />APPROVAL <br />STORM MH <br />RIM: 5322.11 <br />INV. IN: 5316.96 <br />INV. OUT: 5316.76 <br />INV. IN(W): 5318.36 <br />NOTES: <br />36" RCP ST/L © 0.48% <br />1. THE GRATE ON THE DETENTION POND'S RELEASE <br />STRUCTURE SHALL MEET THE SPECIFICATIONS FOR <br />A 'CLOSE GRATE', AS SPECIFIED IN THE CDOT <br />M & S STANDARDS, M-604-10, LATEST VERSION <br />THEREOF. <br />2. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH <br />THE CITY OF LOUISVILLE STANDARDS AND <br />SPECIFICATIONS, LATEST VERSION THEREOF. <br />3. ALL ON-SITE CURB AND GUTTER SHALL BE CATCH <br />PAN, UNLESS OTHERWISE NOTED. <br />Document Approval Expires: <br />6' <br />NORTH <br />GEO-FABRIC <br />TREVIRA SPUNBOUND #1114 <br />(OR APPROVED EQUAL) <br />20 0 10 20 40 <br />Sinanaliamimmel <br />7 04/05/00 <br />DATE <br />NO. <br />This document was reviewed for conformance with City of Louisville <br />Design and Construction Standards. City approval does not relieve , <br />owner, design engineer or contractor of responsibility to correct <br />errors or omissions relating to this document. <br />JOB NO <br />287-1 <br />ORIGINAL SCALE: 1"=20' <br />CITY COMMENTS dated 04/03/0C dsm <br />DESCRIPTION BY <br />PARK ENGINEERING <br />CONSULTANTS <br />420 21ST AVENUE, SUITE 101 <br />LONGMONT CO. 80501 (303)651-6626 <br />INDUSTRIAL BUILDING <br />GRADING AND DRAINAGE PLAN <br />for <br />FINAL PLANNED UNIT DEVELOPMENT <br />IDATE 1CAD NO SHEET NO <br />3NI1 OM NO IMINJ 30 3903 NOIUSOd <br />0 <br />VINUO311V3 '3N{Ak1I • <br />838Nf1N ONI <br />co <br />F. <br />1 <br />94 <br />31 <br />0 <br />• <br />VINHO311V0 '3N AHI <br />838WI1N 9NIMVUO <br />a38Wf1N 9NIMVU❑ <br />5 30 ti 3DVd '013 <br />xo <br />co r <br />r co <br />c <br />