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In- . <br />I N.E.1/4, SECTION 19, T.28N., ME., W.M. I <br />PROF <br />EXIS" <br />///---SEE NOTES BELOW FOR <br />SEEDING REQUIREMENTS <br />EMERGENT SWALE <br />PLANTING AND CONSTRUCTION CRITERIA <br />WETLAND PLANT UST FOR EMERGENT SWALES: <br />PLANTING <br />SLOUGH SEDGE <br />SOD SHALL BE ESTABLISHED IN BOTH GRASS AND EMERGENT SWALES AND SHALL <br />(CAREX OBNUPTA) <br />BE OVER -SEEDED WITH THE SEED MIX SPECIFIEJ BELOW, AS DETAILED UNDER THE <br />CONSTRUCTION CRITERIA, <br />SPIKE RUSH <br />(ELEOCHARIS PALUSTRIS) <br />IN ADDITION TO SODDING AND SEEDING, EMERGENT SWALES SHALL BE PLANTED <br />WITH EMERGENT WETLAND VEGETATION AS DETAILED IN THE CONSTRUCTION <br />SOFT RUSH <br />CRITERIA THE SPECIES TO BE USED ARE LISTED BELOW. AT LEAST TWO SEPARATE <br />(JUNCUS EFFUSUS) <br />PLANT SPECIES SHALL BE PLANTED. AN OVERALL DENSITY OF ONE PLANT PER <br />SQUARE FOOT OF SWALE BOTTOM IS REWIRED. <br />SMALL -FRUITED BULRUSH <br />(SCIRPUS MICROCARPUS) <br />WETLAND VEGETATION PLANTED AFTER MARCH 15 AND BEFORE OCTOBER 15 NILL <br />GENERALLY REQUIRE IRRIGATION THROUGH THE FIRST SUMMER TO ENSURE PLANT <br />CATTAILS (TYPHA LATIFOLIA) MAY BE USED IN PLACE OF ANY OF THE ABOVE <br />SURVIVAL. WETLAND VEGETATION SHALL IDEALLY BE PLANTED BETWEEN OCTOBER <br />SPECIES IN EMERGENT SWALES EXPECTED OR DESIGNED TO HAVE PONDED OR <br />15 AND MARCH 15. <br />STANDING WATER. <br />SEED MIX FOR GRASS AND EMERGENT SWALES: <br />CONSTRUCTION NOTES <br />GRASS SPECIES PERCENTAGE BY WEIGHT <br />PREPARE THE SWALE FOR SOD IMMEDIATELY AFTER IT HAS BEEN GRADED. <br />MEADOW FOXTAIL 40% <br />ROUGHEN THE BOTTOM AND SIDES OF THE SWALE BY RAKING. PLACE FOUR INCHES <br />(ALOPERCURUS PRATENSIS) <br />(MINIMUM) OF TOPSOIL. AND FERTIUZE WITH AN APPROPRIATE FERTILIZER AT THE <br />RATE OF SEVEN POUNDS PER 10DO SQUARE FEET OF SWALE BEFORE LAYING THE <br />ALTA FESCUE 25% <br />SOD. IN GENERAL, USE A 10-20-20 (N-P-K) FERTILIZER. HOWEVER, USE A NON- <br />(FESTUCA PRATENSIS) <br />PHOSPHORUS CONTAINING FERTIUZER IF THE SWALE IS BEING CONSTRUCTED IN <br />THE SILVER LAKE DRAINAGE BASIN OR IN THE DRAINAGE BASIN OF ANY OTHER <br />REDTOP BENT GRASS 20: <br />PHOSPHORUS -SENSITIVE WATER BODY. <br />(AGROSTIS ALBA) <br />SOD THE SWALE IMMEDIATELY AFTER THE SIDES AND BOTTOM OF THE SWALE HAVE <br />FESCUE 10x <br />RED FESCUE <br />RED <br />BEEN PREPARED. LAY SOD TO A MINIMUM OF ONE FOOT OF VERTICAL DEPTH <br />RUBRA) <br />ABOVE THE BOTTOM OF THE SWALE, WITH THE LONG AXIS OF THE SOD PIECES <br />PERPENDICULAR TO THE DIRECTION OF FLOW IN THE SWALE STAGGER THE PIECES <br />BIRDSFOOT TREFOIL 5% <br />TO AVOID A CONTINUOUS LONGITUDINAL SEAM IN THE BOTTOM OF THE SWALE <br />(LOTUS CORNICULATUS) <br />ANCHOR THE SOD IN PLACE IN THE BOTTOM OF THE SWALE AND TO ONE FOOT OF <br />VERTICAL DEPTH ABOVE THE BOTTOM OF THE SWALE WITH, STAKES. METAL <br />STAPLES, OR OTHER MEANS. <br />1 <br />r7 BIOFILTRATION SWALE <br />NOT TO SCALE <br />NORTH <br />0 10 20 <br />II <br />W <br />OO <br />Vi <br />0 <br />W <br />I <br />I <br />> <br />I <br />000 <br />Q <br />N <br />1 <br />Go <br />+ <br />+ <br />PR <br />POSED TOP OF <br />CURB <br />D <br />c <br />I` <br />I <br />m <br />I <br />CA <br />OF EXISTING ROAD <br />I <br />o <br />0 <br />0 <br />----------;---- <br />- <br />-- <br />-------------------- <br />- <br />I <br />I L--- <br />I <br />I r--- <br />II <br />--------- <br />-J I <br />I <br />I <br />EX. CB <br />TYPE II <br />-, I <br />RIM=494.37 <br />I <br />I INLET abA <br />I <br />IE=401.52 <br />- 12'N <br />RIM-49P.20 <br />4.1T <br />IE=489. <br />3 - 8 <br />EX. CB <br />TYPE A <br />RIM=489.84 <br />IE=486.04 <br />- 12"S <br />i <br />I I I <br />I i i <br />i <br />I <br />II <br />T/C ELEV: X <br />X <br />490.69 <br />491.07 <br />491.49 <br />491.93 <br />492.38 <br />492.74 <br />493.13 <br />493.54 <br />493.94 <br />494.39 <br />494.75 <br />X <br />CA ELEV: 489.1 <br />490.0 <br />490.5 <br />490.9 <br />491.4 <br />491.8 <br />492.2 <br />492.6 <br />493.0 <br />493.4 <br />493.8 <br />494.3 <br />494.6 <br />495.1 <br />1 <br />1 <br />7TH AVENUE SE PROFILE <br />1"-40'H: 1'-5'V <br />WEST BIOFILTRATION SWALE PLAN <br />SCALE: 1'•10' <br />oPL <br />1 <br />0o <br />oo <br />I <br />I <br />PROPOSED <br />BACK OF W <br />LK <br />CA <br />F EXISTING ROD <br />�] <br />- <br />ID <br />RI ,8. <br />C/> <br />N n�PAR79' <br />TE B>' <br />s <br />__ <br />+GRKKR <br />IN <br />. <br />AKE FROM BIO-SWALE <br />--- <br />! <br />R�ISRrr-OUIP,.:�.' <br />I <br />E�4ACH <br />RACK I <br />I - <br />I---------- <br />-- -- <br />I <br />0 STAR77NCi ANICONSTRUCTTON <br />OY <br />27 <br />_I <br />- ------- <br />--- <br />I <br />-------- -- <br />I <br />1418.52 <br />i <br />--- <br />L <br />P- CUP.P,GI71ST=NDAF <br />3 <br />7 15" <br />OUTFACE <br />IE=4i6.83 <br />AT DETENTION P <br />ND <br />I <br />S <br />D°..MOMA$ <br />7S.3a <br />IOLF 12" <br />D 5=0:507 <br />S= <br />30LF e <br />5i5PSgg <br />I <br />e� <br />--------- <br />---------- <br />CB 17 <br />TYPE A <br />26LF 15"CPP S <br />, G.4✓¢✓'l <br />I <br />I -------- <br />- __ _ <br />RIM-4'81.00 <br />IE=4 <br />- 12"&15"418.41 <br />(IN) <br />) <br />:+ <br />�,16.3'i <br />j51 (�) <br />I I <br />y <br />r` <br />i <br />41 <br />CB 15 TYPE B <br />, <br />1 q <br />111 w % - <br />o <br />m <br />I RIM=481.Y <br />IE=446,43 - 1 <br />1,417 <br />"41fo,3S <br />p,4�^/, <br />RIM=4B553 k80.91 - <br />IE=477.81 - 8 <br />477•l3CB <br />EL <br />IL <br />CB 33 <br />TYPE A <br />ITYPE �A <br />IE= <br />(IN <br />(� <br />5l(ouT) <br />418.01r'15u(4N�'4-I- <br />+ <br />o <br />ERA472 <br />§ 124'14•�7 <br />34 <br />GRATE ,4348� g14•Gq <br />I <br />INLET 16A <br />NOTE: USE RIBBED PVC <br />IPE <br />INLET 15A <br />I,.. <br />ag� <br />411•Ti <br />3 <br />IE=4?1.6 - 12"47o•"tp <br />CB 35 TYPE A <br />GRATE= <br />a <br />IE=4�8 3g - 8" ' <br />I <br />GRATE= <br />IE=438.25 - 8 <br />o -I <br />-4-77.74 <br />- -- <br />IE=4,24 <br />12' <br />c <br />4lS.av <br />464 4 <br />(DUT� A <br />M <br />A4 <br />OPWET= <br />+j3'* <br />410.0 <br />v <br />E469-Bg <br />i <br />I <br />E- <br />1+&9 g <br />PROP T/C ELEV: X <br />- 1+00 <br />5+00 _ _ _ - _ _ 6+00 <br />1010/ 7S Avc SE - Lt i li4y Drawings 10101 7th Ave SE <br />.J 'x <br />J <br />EQ <br />L <br />'.1E ryz <br />LL L_ <br />U3 <br />tJ.l <br />�a: <br />2 <br />REVISIONS: APPD. <br />DATE: MARCH• 1998 <br />DESIGN: JNM <br />$ <br />DRAWN: MMN/CLK <br />CHECKED: JNM <br />REVISION <br />g <br />NUMBER: <br />SCALE: AS SHOWN <br />PROJECT NUMBER: <br />TCWXW84 <br />7 <br />SREEf NO. <br />C <br />V 4 <br />8 <br />OF <br />24 X- <br />30 x <br />