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1 <br />1 <br />WIWI <br />TW=26.1 <br />BW=25.6 <br />TW=27.9 <br />BW=25.4 <br />1011/ <br />Ji) I/1/ <br />)/7")/, /3:1 SLOFf <br />1 <br />LOT 2, BLOCK 2 <br />THE BUSINESS CENTER AT CTC <br />-EXISTINC/CONTOURS IN THIS AREA ARE BASED ON THE EXiSTING CONTOURS ,/ <br />SHOWN /ON THE "PHASE 1 ORADING AND EROSION CCINTROL PLAN' FOR THE/ <br />BUSINE/SS CENIER AT C:.T. DATED 5;10/00 BY C_IIARLES REIM & ASSOC! TES, INC. <br />Sti) ,A1 1:::-/5 I <br />RIM=21.0 <br />I 40 <br />EX. 20' DRAINAGE EASEMENT <br />40 THE BUSINESS CENTER AT CTC <br />1 (COMMON DETENTION AREA) <br />o <br />/ <br />LOT 5, BLOCK 2 <br />EX. 20' DRAINAGE EASEMENT <br />1 <br />1 <br />WPW <br />woo <br />WO <br />soo <br />ewe esp. Ws. salesa <br />WNW WSW <br />WWI *WED <br />• <br />EX. GRADE AT <br />PROPERTY LINE <br />= 32.5 <br />ft - <br />SEE TYPICAL WALL <br />SECTION THIS SHEET In <br />TW=27.9 <br />1' CHASE <br />19.9 <br />SLOPE VARIES <br />3:1 MAX. <br />DRAIN INLET #5 <br />DRY STACKED PRECAST <br />RETAINING WALL <br />WALL HEIGHT VARIES <br />3:1 <br />6" VERTICAL CURB <br />EX. GRADE AT <br />PROPERTY UNE <br />= 31.5 <br />TW=27.0 <br />BW=24.5 <br />EX. GRADE AT <br />PROPERTY UNE-' <br />LOT 3A <br />RETAINING <br />CURB -FACE -MP.) I <br />5:1 SLOPE <br />EX. GRADE AT <br />PROPERTY LINE <br />at CO <br />LOT/ 3A <br />/ASPHALT ORI1V- <br />TYPICAL WALL SECTION <br />NOT TO SCALE <br />le <br />le <br />,/ LOT 4/ <br />• <br />1W=26.9 r <br />mom sow <br />- <br />BW=25. <br />EX. GRADE AT <br />PROPERTY LINE I <br />MANHOLE #1 <br />INV IN (N)=15.51 <br />INV IN (E)=15.51 <br />INV OUT (SE)=15. <br />DRAIN INIXT #6 <br />INV OUT T=16.25 <br />1' CHASE <br />BW=24.4 <br />HP 22.2 <br />ra <br />wino mew wass WNW WSW Ws. <br />TW=24.9 <br />EX. GRADE AT <br />PROPERTY LINE <br />= 28.0 <br />Sj-\ <br />1 <br />1 <br />1 <br />1 <br />1 <br />46) <br />5," <br />%4) DOGIVOD TREE") <br />s•44.• ves'ss-stasTers .4-44147 ss44.7447.44444-1:-..ssits' <br />1 <br />21.8 <br />21.4 <br />21.8 21.8 <br />CONC. WALK <br />21.5 <br />0116 <br />3:1 SLOPE <br />OWN, WNW Wow Ww <br />ems woe <br />EASEMENT <br />EX. 10' DRAINAGE <br />EASEMENT <br />19 <br />LOT „1„- <br />/ OUTLET STRUCTURE <br />INV OUT (E)=14.25 <br />(SEE DETAIL THIS SHEET) <br />W.S.E.io =16.9 /(BASED ON THE ASSUMPTION THAT <br />i AS.E.100 =17. THE WATER QUALITY POND IS FULL) <br />if i Q100 =544cfs <br />i ill <br />7 <br />124.7 LF 18" STORM AT 0.4% <br />EX. INV=13.751 <br />1 <br />DRAIN INLET #7 <br />GRATE=19.4 <br />INV IN (N)=15.32 <br />INV OUT (SW)=1542 <br />STANDARD RAMP DRIVE <br />AND DETACHED WAU< <br />MATCH EXISTING CURB <br />AND SIDEWALK <br />EMERGENCY <br />POND OVERFLOW <br />EX. STORM MANHOLE #53 <br />Ca <br />3,1 <br />1 <br />1 <br />CAST IN BOX <br />(BEHIND PLKIE) <br />ORIFICE INVERT <br />4" 1 <br />4 lir (11-15SlieDETHaESTHAIICKL) <br />e I STEEL PLATE <br />mosso mow mass <br />"' <br />.„ <br />saw sews OW owe. <br />so <br />1 18* PPE <br />BEYOND <br />10 YEAR ORIFICE <br />SECTION B -B <br />(GRAVEL NOT SHOV81) <br />N.T.S. <br />100 YR ORIFICE PLATE <br />GRATE <br />10 YR WSEL-15.9 <br />• <br />71.17 <br />STEEL PLATE <br />SECTION C -C <br />POND ORFICE FLAW <br />N.T.S. <br />10.5* DIA. HOLE <br />IN STEEL PLATE <br />EL. 14.25 <br />/BOLT HOLE(TYP.) <br />IgiA ORIFICE INVERT <br />AS SHOWN(TYP.) <br />• <br />RRST ROW <br />Sr <br />WATER QUAUTY ORIFICE PLA1E <br />CAPTURE VOLUME SURFACE ELEV15.6 "-"N <br />COBBLES(1.5"-3") AGAINST <br />WATER QUAUTY ORIFICE <br />GRASSED POND...-sv. <br />BOTTOAI <br />FILTER FABRIC <br />WATEFt QUAUTY ORIFICE PLATE <br />(SEE DETAIL) <br />POUR 'CONCRETE INVERT <br />IN BOX BOTTOM <br />14.25 <br />N.T.S. <br />100 YR ORIFICE PLATE <br />10 YR <br />ORIFICE <br />A <br />WATER QUAUTY <br />ORIFICE PLATE <br />OUTLET STRUCTURE, <br />\ SEE rxr INLET <br />STRUCTURE DETAL <br />(GRAVEL NOT SHOWN) <br />N.T.S. <br />e 11 <br />PLAN <br />NOTES <br />1. GRADE AWAY FROM BUILDINGS A MINIMUM OF A 12 INCH DROP IN THE FIRST 10 FEET IN <br />LANDSCAPE AREAS, AND AT A MINIMUM 2% SLOPE IN THE FIRST 10 FEET IN IMPERVIOUS AREAS. <br />SLOPES IN LANDSCAPED AREAS SHALL NOT EXCEED 4H:1V UNLESS OTHERWISE NOTED. <br />2. FLOOD INFORMATION: LOTS 2 AND 3, BLOCK 2, THE PARK AT COLORADO TECHNOLOGICAL <br />CENTER, IS LOCATED ENTIRELY IN ZONE X ACCORDING TO FEMA FLOOD INSURANCE RATE <br />MAP; COMMUNITY -PANEL NO. 08013C0578 F, DATED JUNE 2, 1995. <br />3. THE BENCHMARK FOR "THE PARK AT COLORADO TECHNOLOGICAL CENTER" IS CETNER <br />SECTION 16, TOWNSHIP 1 SOUTH,RANGE 69 WEST, #5 REBAR; ELEVATION 5318.04'. <br />ADD 5300 TO ALL SPOT GRADES AND PROPOSED CONTOUR LABELS. <br />4. THE SHADED "EXISTING" CONTOURS SHOWN ON THIS PLAN ARE BASED ON THE PROPOSED OVERLOT GRADING <br />PLAN (SHEET 4 OF 14) FOR PHASE 1 FOR "THE PARK AT COLORADO TECHNOLOGICAL CENTER" PREPARED BY <br />HURST & ASSOCIATES, INC. AS APPROVED BY THE CITY OF LOUISVILLE ON 10/22/98 EXCEPT WHERE OTHERWISE <br />NOTED. <br />5. THE "EXISTING" UTILITIES SHOWN ON THIS PLAN ARE BASED ON THE CONSTRUCTION <br />PLANS FOR PHASE 1 FOR "THE PARK AT COLORADO TECHtklOWOCAL CENTER." <br />SCOTT, COX & ASSOCIATES, INC. RECOMMENDS THAT THE EXISTENCE AND LOCATION OF ALL UTILITIES BE <br />FIELD VERIFIED PRIOR TO ANY DIGGING ON, OR ADJACENT TO THE SUBJECT PROPERTY. <br />6. ALL ROOF DRAINAGE SHALL BE DIRECTED TO THE DETENTION POND VIA THE PROPOSED ROOF DRAIN <br />AS SHOWN ON THE PLANS. <br />14'1 - <br />At <br />INLET SHALL BE MANUFACTURED BY <br />AMCOR OR APPROVED EQUAL <br />CONTRACTOR MAY CONSTRUCT A CAST IN PLACE <br />REINFORCED CONCRETE INLET STRUCTURE <br />IN UEU OF PRECAST INLET, IF DESIGN <br />MA'TCHES THE SPECIFIED STRUCTURE AND <br />IS APPROVED BY THE OWNER. <br />NOTE: USE 6* WALL THICKNESS <br />FOR CAST IN PLACE OPTION. <br />24 SQUARE CAST IRON GRATE <br />t&IAH TYPE R -3402-E, <br />OR APPROVED EQUAL) <br />SECTION A -A <br />CONTRACTOR SHAU. MAKE PIPE <br />CONNECTION OPENINGS AS REQUPED <br />IN THE FlaD AND SHALL POUR NEW <br />CONCRETE INVERTS IN THE INLET <br />AFTER THE PIPE TIE-INS HAVE BEEN MADE. <br />THE POURED INVERT SHALL HAVE A MIN. <br />SIDE SLOPE OF 1" PER 12". <br />INLET STRUCTURE <br />25 <br />-5225 <br />LEGEND <br />x 25.8 <br />11 111 III II 11 11 NI <br />LOT 2A <br />PROPOSED CONTOUR <br />EXISTING CONTOUR <br />PROPOSED SPOT ELEVATION <br />EXISTING SPOT ELEVATION <br />HISTORIC SHEET FLOW <br />PROPOSED FLOW DIRECTION <br />PREVIOUSLY PROPOSED BASIN BOUNDARY <br />(PER SUBDIVISION DRAINAGE REPORT <br />BY HURST AND ASSOCIATES) <br />PROPOSED BASIN BOUNDARY <br />PROPOSED SUB -BASIN BOUNDARY <br />PROPOSED BASIN DESIGNATION <br />7.0 AREA IN ACRES <br />0 ST <br />STORM <br />it <br />FF <br />TW <br />BW <br />W.S.E. <br />PROPOSED SUB -BASIN DESIGNATION <br />AREA IN ACRES <br />PREVIOUSLY PROPOSED BASIN DESIGNATION <br />(FROM SUBDIVISION DRAINAGE REPORT <br />BY HURST AND ASSOCIATES) <br />AREA IN ACRES <br />PROPOSED DETENTION POND <br />EXISTING STORM SEWER W/MANHOLE <br />PROPOSED STORM SEWER W/MANHOLE <br />FINISHED FLOOR/TOP OF FOUNDATION <br />TOP OF WALL <br />BOTTOM OF WALL <br />WATER SURFACE ELEVATION <br />Scale: 1" = 40' <br />0 20 40 <br />80 <br />GRADING AND DRAINAGE PLAN <br />ELDORADO ARTESIAN SPRINGS <br />LOT 2A, BLOCK 1 <br />THE PARK AT CTC <br />LOUISVILLE, COLORADO <br />:cfr <br />Designed by <br />Drawn by <br />Checked by <br />RGB <br />RGB <br />wHm <br />SCOTT, COX & ASSOCIATES, INC. <br />consulting engineers • surveyors <br />1530 55th Street • Boulder, Colorado 80303 <br />(303) 444 - 3051 <br />Date <br />3/23/00 <br />Revision <br />1 <br />3 <br />Scale <br />Survey <br />Description <br />CITY COMMENTS <br />CITY COMMENTS <br />CITY COMMENTS <br />Sheet <br />01 <br />Date <br />4/14/00 <br />7/6/00 <br />Drawing no. <br />00278A-1 <br />Project no. <br />00278A <br />77. <br />2959 8381M1N WVd A9 830t1038 <br />Cl <br />23 <br />Ei <br />crt <br />VIOS3NNIW '3d0H M3N • <br />0 <br />0 <br />23 <br />• <br />z9S9 N38W IN ltidd AS 83a8038 <br />1138wnN 9NIMV80 <br />1:1381Af N 9N1MV80 <br />8381Nf N 9NIMV80 <br />03 <br />0 <br />o <br />1 co <br />g 13 <br />• <br />