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<br />I <br />'I <br />I <br /> <br />LEGEND <br />PLAN <br /> <br />I <br /> <br />__--+- CENTERLINE OF IMPROVED CHANNEL <br />20+00 AND STATIONING <br /> <br />EXISTING UTILITIES (( 24") <br /> <br />--- EXISTING UTILITIES (~24"1 <br /> <br />-SAN.- SANITARY SEWER <br /> <br />--- 100-YEAR FLOOD PLAIN EXISTING CONDITIONS <br /> <br />100'YEAR FLOOD PLAIN IMPROVED CONDITIONS <br /> <br />!lflli!l1 RIPRAP <br /> <br />.-- RIGHT-OF -WAY 1 <br />'- ROAD <br />--~ PROPOSED CHANNEL <br />1010101 THALWEG <br />"-- RIGHT-OF'WAY <br /> <br />=========:: PROPOSED CULVERT OR BRIDGE <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />~ <br /> <br />DROP STRUCTURE <br /> <br />C.M.P. (A.) <br /> <br />CORRUGATED METAL PI PE (ARCH.) <br /> <br />PROFILE <br /> <br />---- EXISTING CHANNEL INVERT <br /> <br />IMPROVED CHANNEL INVERT <br /> <br />G EXISTING UTILITIES <br /> <br />_ _ _ 100-YEAR WATER SURFACE PROFILE <br />EXISTING CONDITIONS <br /> <br />100-YEAR WATER SURFACE PROFILE <br />IMPROVED ca"'DI~IONS <br /> <br />_ RIPRAP <br />"'\." DROP STRUCTURE <br /> <br />I <br />I <br />I <br /> <br />CAMP DRESSER 80 McKEE INC. <br /> <br />.1>t4'f1_~~I#It,I"",..'~II6I', <br />",,,,,...,.. "'.""'....MCU'~I"''''' <br />o.""'"C".'.d' ~2J!J! <br /> <br /> <br /> <br />NOTES <br /> <br />MAP <br /> <br />I. THIS DRAWING IS A MASTER PLANNING SHEET <br />REPRESENTING PRELIMINARY AND CONCEPTUAL <br />ENGINEERING. IT SHALL NOT BE USED FOR <br />CONSTRUCTION PURPOSES. SUBJECT TO CHANGE. <br />2. ANY BUILDING IN THE VICINITY OF A MAJOR <br />DRAINAGEWAY SHALL HAVE ITS FIRST FLOOR <br />OR BASEMENT WINDOW WELL ELEVATED A <br />MINIMUM OF I-FOOT ABOVE THE 100-YEAR <br />WATER SURFACE AS ELEVATION DEFINED ON <br />THE PROFILE SHEET. <br />3. ALL DEVELOPMENT IN THE BASIN SHALL DETAIN <br />ON-SITE STORMWATER RUNOFF IN SUFFICIENT <br />QUANTITIES TO LIMIT PEAK DISCHARGES TO <br />HISTORIC (UNDEVELOPED) PEAKS FOR THE 2- <br />10- AND 100-YEAR STORMS. ' <br />4. UNLESS A RESIDUAL 100-YEAR FLOODPLAIN IS <br />SHOWN THE EDGE OF THE CHANNEL R.OW. <br />COINCIDES WITH THE 100-YEAR FLOODPLAIN. <br /> <br />Boulder <br />County Line <br />---US287l <br />Lon;n'lont I <br />I <br />r Ir-20 <br /> <br />LA.FAYETTE <br /> <br /> <br />Colo. 36 <br /> <br />,. -tr;J <br />I L, <br />I O.n....r <br />L__ ,...J <br /> <br />VICINITY MAP <br />N.T.S. <br /> <br />DESIGNED RNW CATE <br />ORAWN~OAT[ <br />eH[tK[~OATE <br />REVISED OATE_ <br /> <br />CITY OF LAFAYETTE <br /> <br />URBAN DRAINAGE AND FLOOD CONTROL DISTRICT <br /> <br />BOULDER COUNTY <br /> <br />SELECTED ALTERNATIVE PHASE B DESIGN <br /> <br />BASINWIDE MAJOR DRAINAGEWAY PLANNING <br /> <br />NO. <br /> <br />DRAWING INDEX <br />TITLE <br /> <br />A INDEX SHEET <br />B DRAINAGE BASIN MAP <br />C SELECTED ALTERNATE PLAN MAP <br /> <br />PLAN INDEX <br /> <br />THIS SHEET NOT USED <br /> <br />2 DRAINAGEWAY I STA. 64 + 20 TO STA. 68+ 60 <br /> <br />3 DRAINAGEWAY I STA. 0+00 TO STA. 64+20 <br />DRAINAGEWAY 2 STA. 0+00 TO STA. 12 +40 <br /> <br />4 THIS SHEET NOT USED <br /> <br />5 DRAINAGE WAY 2 STA. 116 + 35 TO STA.127 + 40 <br /> <br />6 DRAINAGE WAY 2 STA. 52 + 90 TO STA. 116 + 35 <br /> <br />7 DRAINAGEWAY 2 STA. 12 + 40 TO STA. 52 + 90 <br />DRAINAGE WAY 3 STA. 0 + 00 TO STA. 22 + 00 <br /> <br />B THIS SHEET NOT USED <br /> <br />9 DRAINAGEWAY 5 STA. 45+ 50 TO STA. 96+50 <br /> <br />10 DRAINAGEWAY 3 STA. 51 + 05 TO STA. 66+ 50 <br />DRAINAGEWAY 4 STA. 26+00 TO STA. 4B+45 <br /> <br />II DRAINAGEWAY 3 STA. 22 + 00 TO STA. 51 + 05 <br /> <br />12 THIS SHEET NOT USED <br /> <br />13 DRAINAGEWAY 5 STA. 15+70 TO STA. 45+50 <br />DRAINAGE WAY 6 STA. 0 + 00 TO STA. 26 + 70 <br />DRAINAGEWAY 7 STA. 0 + 00 TO STA. 32 + 40 <br /> <br />14 DRAINAGEWAY 4 STA. 0+00 TO STA. 26+20 <br />DRAINAGE WAY 5 STA. 0 + 00 TO STA. 15 +70 <br /> <br />15 THIS SHEET NOT USED <br /> <br />PROFILE INDEX <br /> <br />16 DRAINAGE WAY <br /> <br />STA. 0 + 00 TO STA. 68+60 <br /> <br />17 DRAINAGEWAY 2 STA. 0+00 TO STA.112+00 <br /> <br />18 DRAINAGEWAY 2 STA.1I2+00 TO STA.127+40 <br />DRAINAGE WAY 3 STA. 0 + 00 TO STA. 68 + 50 <br /> <br />19 DRAINAGEWAY 4 STA. 0 + 00 TO STA. 48 + 45 <br />DRAINAGEWAY 5 STA. 0+00 TO STA. 56+00 <br /> <br />20 DRAINAGE WAY 5 STA. 56+00 TO STA. 96+50 <br />DRAINAGEWAY 6 STA. 0 + 00 TO STA. 26 + 70 <br /> <br />21 <br /> <br />DRAINAGEWAY 7 STA. 0 + 00 TO STA. 32 + 40 <br /> <br />BASIN MAP INDEX <br /> <br />DRAWING <br />A <br />