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Home My WebLink AboutLUA-07-074_Large FormatE- D- B- ... O'.'. w U) :::, ... A ... w f- <( 0 ... 4:1'.:T I 1=4: .~ / 0 0 <C 0 Q::: f-- } ( ' 0 ' 4, ... " \ ', :\ \ \ I O \ ~ ' ' 8 J ' ' " I \/ / 8 / I / / w WE-6 I 7 7 - 6 PROJECT ACCESS POINT r: 5 THUNDER HILLS CREEK (CLASS 3) CONCRETE FLUME _,,-J 4 LOWER THUNDER HILLS -AREA 2 Call: TOLL FREE 1-800-424-5555 ™ PRELIMINARY-NOT FOR CONSTRUC 6 5 DAVID EVANS ANoASSOCIATES INC. 415-118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 4 0 3 2 ---v-·----I /'1" ·1 I I , r i , LEGEND: WE-1 ++++++-1 + + E!)R -t1 + + + +U-+ I+ + _1 +++++++ * WETLA~ID RESTORATION AREAS BUFFER ENHANCEMENT PLANTING AREA BUFFER RESTORATION PLANTING AREA SNAG W/ NEST BOX HABITAT LOG SEDIMENT FENCE WETl_AND 2.82R -AREA 3 PROPOSED STRUCTURES = •• ----==== STRUCTURE WITH GUY WIRES -__ .-.. WETLAND BOUNDARY WETLAND /STREAM BUFFER STREAM CENTERLINE Exhibit 6 \ E D C B NOV -fi 2007 ' 'i;;f) ~R:E"1:S10~N D~ESC~RIP:cno:N, --------·-r--------:----:-----=--=------~---~""·-~-J_ ORIGINAL ISSUE I-405 REN TON A 40 80 120 --APPROVAL CADD GBK LAND ARCH JCGA DATE (M/D/Y) 10 / 16 / 07 / / 10 I 16 / 07 TRANSMISSION LINE RELOCATION MITIGATION LANDSCAPE PLAN SOUND ENERGY MAJOR PROJECTS TRANSMISSION CORRIDORS DRAWING NO REV NO 0 • PUGET 8 FILE NO SCALE: 1 "=40' I I SHEET 6 OF SCANNED SCALE: 1"=40'-0" REVIEW CLASS: SITE I I LOG OUT I I CADD NO: $$DGN$$ 3 2 E- D- B- A 8 7 6 PLANT SCHEDULE (FOR SHEETS 5 AND 6 ) BOTANICAL NAME COMMON NAME SIZE HT, GAL. SPACING WR-1A WR-1 WR-2 WE-I WE-1 WE-2 SHRUBS (FOR CLEARED WETLAND AREA AND WHERE SPECIFIED) Cornus sericea Red Osier Doqwood HT 15"-24", 2 GAL. 5' O.C. 7 13 Lonicera involucrota Black Twinberry HT 1511 -24'', 2 GAL. 5' o.c. 7 20 8 26 Physocarpus capitatus Pacific Ninebark HT 15"-24", 2 GAL. 5' O.C. 13 Rosa pisocarpa Swamp Rose HT 15" -24", 2 GAL. 5' O.C. 20 Rubus spectobilis Salmonberry HT 15"-24"! 2 GAL. 5' o.c. Salix scoul eriana Scouler Willow LIVE STAKES 2.5 O.C. 56 Salix sitchensis Sitka Willow LIVE STAKES 2.5 O.C. 30 12 100 16 100 SHRUBS {FOR CLEARED WETLAND /STREAM BUFFER AREAS ONLY) Crotaegus douglasii Black Hawthorn HT 1.''i"-?4" ? ~Al. 5' o.c. Rubus porviflarus Thimbleberry HT 1.~" -?4" 7 o,AI. 5' o.r.. Symphoricarpas albus Snowberr)1 HT 15"-24" 2 GAL. ~· (\ (' Holadiscus discolor Ocean Spray HT 15"-24" 2 GAL. ,;;• n r Oemleria cerasiformis Indian Plum µT 1£;" 0A" ') (:: A I i;' r. r Raso nu\kana Noo\ka Rose HT 15"-24" 2 GAL. c.,• (\ (' ... '"···· Tnll -f',ano HT 15" 24" 2 GAL. c.,' 0 r. Ribes sanguineum Red-flowerinq Currant HT 15"-24" 2 GAL. .c..' () r. Philodelphus lewisii Mock oranae HT 15"-24" 2 GAL. ~· () r: AREA TOTALS 30 12 7 147 24 208 5 (QUANTITIES FOR PLANTING AREAS SHOWN IN SHEET 5 OF 8) WE-3 WE-4 BR-1 28 13 43 10 28 43 85 16 700 30 5 5 10 7 5 5 427 69 37 BR-2 BR-3 BR-4 BR-5 6 5 5 5 21 30 14 12 15 6 5 22 10 4 30 10 30 11 30 49 9 171 LEGEND BOTANICAL NAME TREES/ LARGE SHRUBS Crataegus douglasii Acer circinatum Salix scouleriana Salix sitchensis BR-6 30 ?() 10 31 '" 22 22 22 187 BE-1 40 28 23 .,, 57 34 23 23 262 4 BE-2 BE-3 BE-4 13 62 7 30 10 46 15 92 15 115 rn 46 10 46 9 15 69 104 506 COMMON NAME Black Ha11tthorn Vine Maple Scouler Willow Sitka \Mllow 45 % 9 35 '~ 26 17 17 209 NOTE: Each willow symbol is equal to 16 live stakes. SHRUBS t!1 Sambucus racemosa Red Elderberry Cornus sericea Red Osier Dogwood Physocarpus capitatus Pacific Ninebark Symphoricarpos albus Snowberry ~ Ho!odiscus discolor Ocean Spray Lonicera involucrata Black Twinberry ®-------_ Oemleria cerasiformis Indian Plum 0----__ Rubus spectabilis Salmonberry Rosa nutkana Nootka Rose GROUNDCOVER Medium Bark Mulch BE-5 60 26 35 35 26 17 17 216 QUANTITY ' I BE-6 WR-3 WR-4 WR-5 17 8 10 10 1f1 13 54 7 200 40 100 16 16 16 5 16 16 105 227 94 128 3 2 (QUANTITIES FOR PLANTING AREAS SHOWN IN SHEET 6 OF 8) WR-6 WE-5A WE-5E WE-6 WE-7A WE-78 10 10 5 5 13 20 8 10 25 15 10 10 5 10 50 22 19 21 15 40 60 200 '" ?() 123 102 8 249 86 65 WE-8 WE-9 WE,10 .W-11A WE-111 WE-12 BR-7 7 20 10 11 20 10 10 10 20 1J 10 20 7 20 15 178 20 20 3(1 50 296 296 119 119 176 67 67 73 75 10 31 1,184 WETLAND PLAN Tl ING AREA dRDINARY HIGH VfATER LINE (OHW) (TYPICAL) ' ::---lsTREAM ~WETLAND PLANTING "'- ' AREA UPLAND (BUFFER) 9LANTING AREA (fYPICAL) TYPICAL MITIGATION PLANTING LAYOUT SCALE: 1" = 20' E TOTAL 164 265 1 n1 "'.7 n D soo 1 455 152 597 658 85 5 349 119 ss 401 5,389 C B Exhibit 5 Nov·· s 2001 r;;;=;;;-;;==;;:;:--------'---------,-------------------------------lf-A RE\r1SION DESCRIPTION: '" PRELIMINARY-NOT FOR CONSTRUCTION DAVID EVANS ANoASSOCIATES INC. 415 -118th Avenue SE Bellevue Washington 98005-3518 Phone: 425 519.6500 ORIGINAL ISSUE CADD LAND ARCH REVIEW LOG OUT APPROVAt DATE (M/D/Y) GBK 10 / 16 / 07 I I JCGA 10 ; 16 ; 07 I I I I 1-405 RENTON TRANSMISSION LINE RELOCATION MITIGATION PLANT SCHEDULE • PUGET SUBSTATION ENGINEERING DEPARTMENT DRAWING NO REV NO SOUND ENERGY SCALE: 1"=100'-0" CLASS: SITE 0 SHEET 7 OF 8 SCANNED FILE NO I I CADD NO: $$0GN>$ L__--------i---------,---------,--------,-------,--------,---------,---------r--------,---------,---------t----__1_ ___ -r_~ __ L_ ____ F.::..:___:_:_~::..:__ __ 8 7 6 5 4 3 2 E- D- B- A .t,Cf I [",de -, 8 LEGEND: WE-1 ++++++4 + + + + + + + + + + +[;3-F\ ..c._J+ + + + 4 7 WETLAND RESTORATION PLANTING AREA WETLAND ENHANCEMENT PLANTING AREA BUFFER RESTORATION PLANTING AREA '--' 0 '· 0 '---' 0" 0 ~') 0 'J 0 o O O '' 0 c O O o VOLUNTARY BUFFER ENHANCEMENT PLANTING AREA OOOOBE"-::?(/,-tjOOOO 0 ( )-LI() Q ()~Q,-, -(!,~ ,.·n * SNAG W/ NEST BOX HABITAT LOG --~~.-------*---SEDIMENT FENCE ----0------0-----0-----0-----o---o---o---STRAW WA TTLE 8 AR R I ER 8 7 6 I \ \ \ I I ==== •• :::::::::::: 1 I ' / PROPOSED STRUCTURES STRUCTURE WITH GUY WIRES WETLAND BOUNDARY WETLAND/STREAM BUFFER STREAM CENTERLINE EXISTING ACCESS ROAD CALL BEFORE YOU DIG Call: TOLL FREE 1-800-424-5555 6 5 4 ' \ \ \ \ \ \ ' \ \ \ \ \ \ I \ i I I >/ f / ' / , / ·1/j) :1% ' / \ \ ' I ' ' \ \ I I -- i ! 0 80 120 -1 SCALE: 1 "=40' 3 2 ~', ,_" q ;J w\ r (r/ ~/ j I z; ) E ~ I w J ) I 0.::: / / '1-" r:i--'3:_'{ I -I " n -I ~ I r, ------_co:_ ------------t--'------~::: -' D I I I C \ B UPPER THUNDER HILLS CREEK-AREA 1 Exhibit 6 Nov -s 21101 ,. '"'' "''" REVISION DESCRIPTION: >n!}t::rJ ><,t 1/.f i(,,,~e, r-==c-:=-------,--------,----------------~~----i--A DAVID EVANS ANoASSOCIATES INC. 415 -118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 ORIGINAL ISSUE CADD LAND ARCH APPROVAY GBK JCGA DATE (M/D/Y) 10 / 16 / 07 / / 10 / 16 / 07 / / 1-405 RENTON TRANSMISSION LINE RELOCATION MITIGATION LANDSCAPE PLAN • PUGET SUBSTATION ENGINEERING DEPARTMENT DRAWING NO REV NO SOUND ENERGY SHEET 5 OF 8 0 REVIEW / / LOG OUT / / PRELIMINARY-NOT FOR CONSTRUCTION SCALE: 1 "= 40' -0" CLASS: SITE SCANNED FILE NO CADD NO: $$DGN$$ 5 4 3 2 1 E- D- J 8 ,J \~ ---·------ C ~ ---------! __ . -----L--- ' 0 B- .,. Ct'. w (/) :::, .,. A .,. w c- <( 0 .,. 0 0 <( 0 0::: f- 0 OJ _J 10 28 28 ' :/ ' 8 I Li<,701 SF I• / 452;' SF 'Y \v / ··. 7 \ --\ 7 6 PROJECT ACCESS POINT TH-MR#0/1 ~r{(:-M~ TH-B2#2/13 25688 SF 5 4 i, \S: I /\ ' I / I LOWER THUNDER HILLS -AREA 2 PRELIMINARY.-NOT FOR CONSTRUC 6 5 DAVID EVANS ANoASSOCIATES INC. 415-118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 4 0 < ' ' 19 3F : 2f 4 SF -<.p"\ I '--._ __ LI I ·---...-. I I ~ /\ 1-"/\-J, ! ,_ 1 ' I LEGEND: I ',V ,y I I I I I I I 40 80 3 I ) I \ TH7Ch#0(16 I / I EXISTING WETLAND \ PERMANENT WETLAND IMPACT * l \ PERMANENT WETLAND BUFFER IMPAGT * TEMPORARY WETLAND IMPACT \ WETLAND PAPER TAKE IMPACT TEMPORARY STREAM BUFFER IMP ACT CONSTRUCTION/ACCESS AREA * MITIGATED AT WSDOT SCWHMB i _) (~ I i I 2 ·--------___ ... _ ...... -.. OJ r1l / / -z en \ 0-z ?J 0 ' '":!< ( a 2.82R -AREA 3 SLOPES 40% > PROPOSED STRUCTURE STRUCTURES TO BE REMOVED GUY WIRES WETLAND BOUNDARY WETLAND/STREAM BUFFER -_,,_ .. _ ---STREAM CENTERLINE NOTES: Exhibit 7 J 1. WETLAND DELINEATION BY OTHERS NOV --6 2007 ("f''h:C""~\;'''-,b, -"'" •·'."!·, . · .,.,~ ... t t':U B E D C ·1 [:•E,,~Sl:ON~OE'c:SCR~IPnnoioN:• ------11~----------i-------:----:--:::--=----------=~--J_ ORIGINAL ISSUE 1 1-405 REN TON A APPROVAL! DATE (M/D/Y) TRANSMISSION LINE RELOCATION 120 GADD GBK LAND ARCH i JCGA i 10 1 15107 MITIGATION IMPACT SUMMARY PLAN I / 10 I 16 / 07 ~fgB1kJ MAJOR PROJECTS TRANSMISSION CORRIDORS DRAWING NO REV NO 0 'Y' ENERGY SCALE: 1 "=40' / / 91EET 3 OF 8 FILE NO REVIEW SCANNED SCALE: 1"=40'-0" I / CLASS: SITE LOG OUT I / GADD NO: $$0GN$$ 3 2 E- D- B- "" 0:: w (/) ::, "" A 8 8 a, -¢-·-7 0 0 0 0 \ 7 Part<hg Lot Parki'l<J Lot -=l\ ' -' \ ' > ------------------------~/ =------=-==--/ =·i c=:=:)._ =~ i'-'~='---rf=--acl ' -~ ' 0 ~ -s,- ETLAN .9L" _,_I __...,...-I 7 I . \\ / / / --~r ----- R MITIGATION COVER SHEET MITIGATION IMPACT SUMMARY PLAN MITIGATION IMPACT SUMMARY PLAN MITIGATION REPORT SHEET MITIGATION LANDSCAPE PLAN MITIGATION LANDSCAPE PLAN MITIGATION PLANT SCHEDULE o, ( ' MITIGATION SPECIFICATIONS AND DETAILS 7 1 of 8 2 of 8 3 of 8 4 of 8 5 of 8 6 of 8 7 of 8 8 of 8 6 6 5 THUNDER NW.1/4 SEC. 20, T.23 J.:ilk4$ OWER THUNDER HILLS ~EK , SITE # "1fJ 0 100 200 300 SCALE= 1"=100' 4 DAVID EVANS ANoASSOCIATES INC. 415-·I 18th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 PRELIMINARY-NOT FOR CONSTRUCTION 5 4 3 3 2 E D C ' ' ' ' ' + ' . . ' • ' EXISTING WETLANDS . . • ' ' ' . . [ CONSTRUCTION /ACCESS A EA ·~-PROPOSED STRUCTURES B ~/ '''~t ' STRUCTURE TO BE REMOV D . . " ,• ' ) ' .. = •• ---STRUCTURE WITH GUY WIR s ....-.... WETLAND BOUNDARY --____,... WETLAND /STREAM BUFFER STREAM CENTERLINE Exhibit 2 j I I I \ =;;:;-----+-------,---------------------+-A REVISION OESCRIPTION: ORIGINAL ISSUE APPROVAU DATE (M/D /Y) I CADD GBK I 10 / 16 /07 / / LAND ARCH JCGA 10 / 16 /07 I / REVIEW / I LOG OUT / I 2 1-405 RENTON TRANSMISSION LINE RELOCATION MITIGATION COVER SHEET • PUGET SUBSTATION ENGINEERING DEPARTMENT DRAWING NO REV NO SOUND ENERGY SCALE: 1"=100'-0" GADD NO: $$DGN$$ CLASS: SITE 0 SHEET 1 OF 8 SCANNED FILE NO E- D- B- "" a:: w (/) :::, "" A 8 8 LEGEND: '--------1 _I [>··•··-.. • _--I I I I I c~ 7 I PERMANENT WETLAND IMPACT* PERMANENT WETLAND BUFFER IMPACT* TEMPORARY WETLAND IMPACT WETLAND PAPER TAKE IMPACT TEMPORARY STREAM BUFFER IMP ACT CONSTRUCTION / ACCESS AREA *MITIGATED AT WSDOT SCWHMB 7 A --•• -===== ~-------______ ...... -... 6 SLOPES 40% > EXISTING WETLAND 6 PROPOSED STRUCTURES STRUCTURE TO BE REMOVED GUY WIRES WETLAND BOUNDARY WETLAND/STREAM BUFFER STREAM CENTERLINE EXISTING ACCESS ROAD \ ) 5 4 3 2 \ ' ~'f . I ~) f" E w O::'. J / I ,/ D C I i / ,, B I I UPPER THUNDER HILLS CREEK-AREA 1 NOTES: 1. NOTE: BASE MAP LOCATION FOR EXISTING ROADS CONSISTS OF BOTH SURVEY AND INTERPOLATION FROM A 1 "= 200' AERIAL ENLARGEMENT (6-1-79) PROVIDED BY PUGET SOUND ENERGY. 2. APPROXIMATE STREAM WIDTH BETWEEN ORDINARY HIGH WATER MARK (OHWM) FOR STREAMS 1 AND 2 IS 3 FEET. 3. WETLANDS A, B AND C HAVE BEEN DELINEATED IN VICINITY OF PROPOSED IMPACTS. PORTIONS OF THESE WETLANDS BEYOND THE PROPOSED IMPACTS HAVE BEEN INTERPOLATED. WETLAND DELINEATION BY OTHERS. 0 120 --1 SCALE: 1 "=40' DAVID EVANS ANoASSOCIATES INC. 415-118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 PRELIMINARY-NOT FOR CONSTRUCTION 5 4 Exhibit 7 ] NOV .. (, 2007 r--=-=:c-::==-----;------------.--------------------t-A REV!SION DESCRIPTION: ORIGINAL ISSUE APPROVAY DATE (M/D/Y) CADD GBK 10 / 16 107 I / LAND ARCH JCGA 10 / 16 107 / I REVIEW / / LOG OUT / / 3 2 1-405 RENTON TRANSMISSION LINE RELOCATION MITIGATION IMPACT SUMMARY PLAN • PUGET SOUND ENERGY SCALE, 1"=40'-0" CADD NO, $$DGN$$ SUBSTATION ENGINEERING DEPARTMENT CLASS, SITE DRAWING NO REV NO 0 SHEET 2 OF 8 SCANNED FILE NO E- D- 6- A .,. w I- <( 0 # 0 0 <( 0 er::: 1-- 0 0 ' co ' _J 8 J ' ' ,, , ' 8 w ,v w WE-6 ,v ,J/ w 7 ~ \ - \ 7 .... , .. _ .. -.. ..... __ ·--.... , -----.. .. 6 PROJECT ACCESS POINT 5 THUNDER HILLS CREEK (CLASS 3) CONCRETE FLUME 4 LOWER THUNDER HILLS -AREA 2 Call: TOLL FREE 1-800-424-5555 DAVID EVANS ANoASSOCIATES INC. 415-118\h Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 PRELIMINARY-NOT FOR CONSTRUC 6 5 4 0 3 2 , • I __ ,,'. c::"'·\,,-';' 1:1:1 )I \II') 111 t1 ,/ _,/ --J~ ,·-(:k ;.-··1) 1ll . 1 I ,_i ,I/ !k:>------I --, 11111 IJ,,t.1--(' \ \ I I ~-~ . 1 • / --_ -"''-'-· r i I -r, 1 v ~---_/ _ J 1 1 1_1..f-f i r : . '6 , \ ,,' \".: • • ' lt'J\ \)0\ ' \ ! .-::-----·/ ______ ------,/ -1;11111' \ \ \..__ :t-\ ' · , ,' It,/'(\ \ , ________ ,.--,, <i ,;// ,,,----7- ,, / j ',, --, 1 1 \ / /, 1{' ) /I ) I \ \ \ / /f,t ' ,,----:· ,,;' / : \ . I 1·; j1 I ,,/)\/ /li/1 I I I ;/ ( !' \ \-Cl \ _gii/ -I/ ' I ) ,,,/" . '11' I I ' I I I\ : : I 1 I I -I I \ \ \ i \ I \ \ \ \ I / --''-." _ _,,---~ Y: :"', / I< I, I I j' j I \ I I I i I I ! I I I . i I I\\ I ( ' I Z'k D ' 'I ; ' ' ' I \ ' \ ; " ., ' ; , ; / 1 ~ ',., __ I'-,/ / / 1 1 ,' 1 ., / / / I ! -, \ \ ,11 ,,,, I , \ \ I I I ' ' / / I ---' I " ' / {' I \ ' I ' ,,,_,.,. --' I I I \ \ \ I i I I I I / ~\ : ~ : I/ i / ; / .. k''f<. / wq~5t I I ' i I I ! I I (/ I ' \ \ I OJ _. , =5 , I ,, { 1 &u ii//!\) I 1 , · I t I rn - , ,, / , ; ; 1 , \ , l . · \ 1 / en , 1--, " ,' r; ) , \ 1 i · \ \ \ ; 0 ' --I : Q : f ,/ (\ I ! \ (',/i:: _i 81/1 .! i \ \ \ ,, '1 I -z ! ; :13; 1 ,'\I//_. -11,! \ I\[ \ -~---:<t· -:----., / ,/ j l , 1 I I Ii 1 \. 1 1 1 1 \' II 1 1 _ ~ ,_ L L ~ : I/ ' ' / ' I ! ', ' I I ' I I / 'R I -~~---' ~~~'L ~=='4-~_J I 1'.._ '\IL/ ' '· t;::=:rl'--h <--:-----,__ ' j--. I·. l ' \ 1. : \ I \ \ ~ I ) \ I ' Q-f, --~-I/\ :\ ~ /I\ \ '(',\ \ '! I"" \ \ \ \\ \\ \\ \l::a: i I 1) ( ' , \ I \ 10,) ''v y , ~ I \ \ \ / I \ \ ' \\ \ )> ( / / ' : ' : -r''q~ , '-/ -, ( V, ,1 j f ~ , \ ' ' ' : I \ \ ' \ \ -< \ \' ( / ( I G, ~,___ ,1., : : , '_\£ ~r: I~ c'i(;~ ; ', \ 1 ._ / ,' 1 \ \ , \ \ 1 1 \ \ l\1 \, 1 //,_,,." , _u V < , E f'.:,. / / ( • I• 1 , 1 \ \ \ \ \ \\\ -\ '-' ,, -..__ {, / '\ _ );,d. >!. S [l ; ' , • \' / I I ) • \ \ \ \ \ \ \ \ \ I 'it I .,_ / -~ ,. ' ' / ,, • I I \ I \ I \ I I I I , , : <t: , A,,(, J.8JR ;' / , , 1 • ' \ \ , , I\ '-' I s: I A I //l ,1 . I i I' I I I ~,.,__ : ........ -~~ • ~0X' /(/// // t 41 \\,'\\\) '1\ /\/ \\\\\\l~\\1\\ :/ , ·f,.,---: r ,~ ~1;) ,,,-1 \ l \ -... · I'---2]' "I/ > \ ' ( \\'1 : ;·",/ ( ~ r e-Wf't-1 10. J WET~AND i? 1) ) \ ,/--' ' ~ 1 BU Ff ER , /--..,___ : / (5 ) / I / I I ----~~ _I) I I I ~ 1/ ti (1rn_··~l/--1 ' ( /. ; I ), ( -7")', , 1'--1 vr WETLAND 2.82R -AREA 3 LEGEND: 00.t;.OOOO(n 1 O(;n::,lv~oo WETLAND RESTORAT10N AREAS I .0.0/J, ,0.0f) 0 t ... e PROPOSED STRUCTURES WE -1 BUFFER ENHANCEMENT PLANTING ARF A I -== •• ===== STRUCTURE WITH GUY WIRES ++++++-I + + rnR -11 + + + +D-+ 1+ + .1 + + + + + + + * \ BUFFER RESTORATION PLANTINf AREA SNAG W/ NEST BOX HABITAT LOG SEDIMENT FENCE ' . -__ --. WETLAND BOUNDARY WETLAND /STREAM BUFFER STREAM CENTERLINE NOV·· 6 20D7 E D C B ~;:;~G~s,~N~N ;~~sc:l;S~TI:N::E ---t-----T-------------;-------:~:::--:=-=-----·~~:_2'.t:£!\;~1 1'.:~(l __ l A 1-405 RENTON APPROVA[1 40 80 120 GADD GBK LAND ARCH JCGA DATE (M/D/Y) 10 / 16 / 07 I I 10 I 16 / 07 TRANSMISSION LINE RELOCATION MITIGATION LANDSCAPE PLAN ENERGY MAJOR PROJECTS TRANSMISSION CORRIDORS DRAWING NO REV NO 0 •~~ 8 FILE NO SCALE: 1 "=40' I I SHEET 6 OF SCALE: 1"=40'-0" SCANNED REVIEW I I CLASS: SITE LOG OUT I I CADD NO: $$0GN$$ 3 2 E- D- c- B- ... Q:'. w (/) ::, if; A ~C:11 Lil- 0 8 7 LEGEND: WETLAND RESTORATION PLANTING AREA ,-----I WETLAND ENHANCEMENT PLANTING AREA I WE-1 _ + + + + -l + +~ + ' + + + +' -~_,._1+ + ·I + -r + + + + + o_,0000 _o·o (_) (') {_/ Q Q I) r, o_ () Q -SE. o 1J . u <-)oo,, -O-':oc10 o;.o __ o_ .... -<r--0---- BUFFER RESTORATION PLANTING AREA VOLUNTARY BUFFER ENHANCEMENT PLANTING AREA SNAG W/ NEST BOX HABITAT LOG SEDIMENT FENCE STRAW WATTLE BARRIER 7 6 \ ===-•• --===== -·-,-·-·-·-·-·-,_..--.,.., .... -..._ -· ·-,_, ) PROPOSED STRUCTURES STRUCTURE WITH GUY WIRES WETLAND BOUNDARY WETLAND/STREAM BUFFER STREAM CENTERLINE EXISTING ACCESS ROAD •• o,e ov CALL BEFORE YOU DIG = Call: TOLL FREE 1 -800-424-5555 6 5 4 UPPER THUNDER 0 40 80 120 I l J I 3 w > <( z 1-f w / Ct'. ) ( I/ """'~ ,,._-):~ I ' f__} ' I 7/ -.1=~ / ____ ._ _____ µ ________ _ I I 2 E D ' C B =--4-~-~~::::-IA ~ I 1-405 RENTON REVISIONDESCRIPTIOM: TRANSMISSION LINE RELOCATION ORIGINAL 1ssu=-E-~~-lnm/M/D~ AN APPROVA~ DATE (M/D/Y) MITIGATION LANDSCAPE PL 10 / 16 / 07 DRAWING NO GBK GADD I I REV NO DAVID EVANS ANoASSOCIATES INC. 415 _ 118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 --1 "=40' ™ 0 SCALE: UCTION PRELIMINARY-NOT FOR CONSTR LAND ARCII JCGA ' 10 I 16 107 I I REVIEW I / LOG OUT I / •~~ ENERGY SCALE: 1"=40'-0" CAOD NO: $$0GN$$ SUBSTATION ENGINEERING DEPARTMENT CLASS: SITE 0 SHEET 5 OF 8 SCANNED FILE NO 5 4 3 2 1 E- D- B- <Fl-o:: w Vl ::, <fl- A * w f-- <( D <fl- 8 ' -----I I 8 7 6 5 4 TREE REMOVAL DATA TABLE I LOWER THUNDER HILLS AREA 2 LEGEND: TREE TO BE REMOVED 7 5 4 0 40 80 120 SCALE: 1 "=40' 3 2 E D C B NOV ·. 2307 -=RE"'"v1s=10::c:-N-:-:0E=sc""stP,..,.T,--toH.,---: --------,l;----,---------I-=--4-0_5 __ R_E_N_T_O_N _______ -f-A ORIGINAL ISSUE I APPROVAL CADD LAND ARCH REVIEW LOG OUT 3 DATEl(M/D/Y) TRANSMISSION LINE RELOCATION 10 116101 TREE CUTT I NG/LAND CLEAR I NG PLAN 2 • PUGET SOUND ENERGY SCALE: 1 "=40' -0" GADD NO: $$0GN$$ MAJOR PROJECTS TRANSMISSION CORRIDORS CLASS: SITE DRAWING NO REV NO 0 SHEET 2 OF 2 SCANNED FILE NO E- D- c- B- A I I / I I I I I ----- ' o, Q-1, <(' } o: ({~ a:::: I {I.J I f--' 0' m: _J, 0 <(, f--, ' \ 8 \ \ -.-- - ' ~ '' / I I I ' ' I l 0 ' I \_ , I , ,,, ' i , I '-.)/ 1, /, v' [ t I '· i I ' ,; G-+ I I' I ' ,: I ' I ·o ' I I') ,1,,. ! , , ' f! I 1 l ' 11 ' ,j/ i \\ ' I• [/ I \ " I \ s,; 8 7 I I I + w ·t, ..,v ... w ,,v ,!; w w w .y w ·+ '1/ ·v ,,.v 7 3 + ,!; + 6 6 Tf-J OJ \ i l i ~ l l 5 EXISTING RETAIL STORE 5 4 ; I I AREA 1 4 3 2 E TREE REMOVAL DATA TABLE Tree Number ) Average Diameter (feet) Area # of clumps Average Circumference (feet 10x6 = 60 sq. feet Type of Tree 2.4 0. 76 4x8 = 32 sq. feet 1 Maple 12 3.4 1.08 5x10 = 50 sq. feet 2 Maple 6 2.9 0.92 4x7 = 28 sq. feet 3 Maple 7 3.8 1.21 3x12 = 36 sq. feet 4 Maple 6 3.5 1.11 2x7 = 14 sq. feet 5 Maple 5 2.9 °·92 4x2 = 8 sq. feet 6 Maple 5 0.80 2 2.5 1 27 n/a --., E==i;===~i~~:~*::~=t==i~==±=====:!:f~ =~===~===~2~: 1t0·===3==3~~;:=== ----~---:: E==!9~==~=M~M~:~~::~+===±1==±=====sf.sE=t====+===~1~:~i~===3==3n/!a==~------------··········· tt~~~~~I;11~~~~~==t~C~oit~toln~~wo~o~d=~====l1====~t=~~~~~~~~~~7·~to~=:t~~~~~~~jf~~~~~~j~3~.510======~~~~~~~~n/~a~~~~3 [t==312E==RC~o~tto~n~w~oo*d+==41==1=====1~1 l· 0=E====t====~3H.8~2====1==3n/~a==3 ______________ _ t==~13E==PC~ot~to~n~wo~o~d+==+1===±=====31l2l.O=====t====~4~.1j4===3==3n/~a=== -------·--·: t==~14E==~C=o~tto~n~w~oo=d+==i1==t=====1~3 !· 0=====+====~2~.1~0====1==3n/~a=== --······--······, 15 Maple 1 6·6 1.91 n/a ............. . 16 Maple 1 6·0 1.78 n/a -············ E==~17~==P~M~~ap~le~t==t1==t=====5 f- 6E~===i===~2i.1~0===j=~~n/~a~~a D 6.6 3x3 = 9 sq. feet ~==~~~E==~C~o~t~o~a~~~:~o~dt==t~===±====;3f·Eo~===i===~~~::~~====1=;3n/~a~=a -~:~_:_ . ·. [t===r20E==RC~ot~to~n~wo~o]dt==+1==t=====6~·0E~===i===~1~.1i5=====1;~~n/la~~a··········· 21 Cottonwood 1 ~:~ 0.95 10x8 =~;sq. feet ----~--~~ E==2~2E==PC~ot~to~n~wo~o~d+==t1===t=====;~=~===t====i0~-9i5====1===~E=:3 :: Co~:~:'' ! If: ::: '"''. 11,,. foo1 =-= ;: ~:::: 6 3. 5 : :: :::;; : ::: :: ::: •..... ·•··•· . .. 27 Maple 5 3· O 1.11 , t 6 3 5 80x40 = 3200 sq. ,ee 28 Maple · 1.11 20 3.5 29 Maple '1 . ! ......... ·------·· ·-· --i ! --~----~------·'---· ---, --------~ ----------------· 1 _____ -·---·-··--···------·-'--· .. _____ J .................... ---------... . ------j -· ·------ LEGEND: C 1""~'\ TREE TO BE REMOVED \ I _ _, l B Nf'V · 6 2LlG7 0 80 ;;;;;-;;;;;;:;:~--+-i----~~~~~A ~ I-405 RENTON ;;~1~1~;~cR;;r~:~ TR AN S M I S S I ON L I N E R E L O C AT I ON 120 ~C~AD;D::=t=-=-~A=~PP=-R=O_V=-A=L-=-=-=1=-:;D~:-;;;~E/f'~~:;,/7:m;il;~) _T~R~E~E~~CU~T~T~I.'....N~G~/~Li;A~NJED~;CTL_E_-,~iR:~'f;.wwiN IINGNO~N~r"'plrLR~E~~~DO ~ I I / • MAJOR PROJECTS , foe~ TRANSMISSION Q 1 0 / 16 1 0 7 ENERGY CORR I DORS SHEET 1 OF 2 I I SCANNED FI LE NO 40 LAND ARCH SCALE: 1 "=40' CLASS: SI TE I I REVIEW SCALE: 1 "=40' -0" LOG OUT I I GADD NO: $$DGN$$ 3 2 /. D- 8- A 8 d,C"l I C4' 8 0 0 0 ./ ' / \ I\ Porkhg Loi " \ " I ' I 7 -¢-9-7 8, n (: ~ ' '-.. __....-------~.___ __...Porl<iiigtot--_ __..-------···- 0 0 = / Parkilg Lot INDEX= MITIGATION COVER SHEET MITIGATION IMPACT SUMMARY PLAN MITIGATION IMPACT SUMMARY PLAN MITIGATION REPORT SHEET MITIGATION LANDSCAPE PLAN MITIOA TION LANDSCAPE PLAN MITIGATION PLANT SCHEDULE MITIGATION SPECIFICATIONS AND DETAILS 7 Pgrictng Lot ----·-0··;, 0 I I °"I 1 of 8 2 of 8 3 of 8 4 of 8 5 of 8 6 of 8 7 of 8 8 of 8 5 6 5 THUNDER o,; NW.1/4 SEC. 20, T.23 J:l~ OWER THUNDER HILLS ~EK Mf SITE # 0 100 200 300 SCALE= 1"=100' 4 DAVID EVANS ANoASSOCIATES INC. 415 -118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 PRELIMINARY-NOT FOR CONSTRUCTION 5 4 3 2 1 EXISTING WETLANDS CONSTRUCTION /ACCESS A EA PROPOSED STRUCTURES STRUCTURE TO BE REMOV D ===-•• ---==== STRUCTURE WITH GUY WIR S ~ ~ ____.---_.......___ WETLAND BOUNDARY WETLAND/STREAM BUFFER STREAM CENTERLINE NOV ··· 6 2007 E D C 8 .. · "' i:l!iJ,:;!'\ ,._:,.,.,.~ r-tJ lco:·~;:~1:N~N ;~:s~cl;:;:!"~-----t-----,--------;l-=:_-4-:--~0S---.::R::-::E=-:N~=-=-To-N---~--1 A CADD LAND ARCH REVIEW LOG OUT 3 APPROVAL.'.< GBK JCGA DATE (M/D/Y) 10 / 16 / 07 / / 10 / 16 / 07 / / / / / / 2 TRANSMISSION LINE RELOCATION MITIGATION COVER SHEET • PUGET SOUND ENERGY SUBSTATION ENGINEERING DEPARTMENT DRAWING NO SHEET 1 OF 8 REV NO 0 SCALE: 111 =100' -01) CLASS: SITE SCANNED FILE NO GADD NO: $$0GN$$ E- D- B- A 8 8 7 LEGEND: .__I ____ I PERMANENT WETLAND IMPACT* .__1_·······_····--~I PERMANENT WETLAND BUFFER IMPACT* L--1 ---~I TEMPORARY WETLAND IMPACT I I c~ WETLAND PAPER TAKE IMPACT TEMPORARY STREAM BUFFER IMPACT CONSTRUCTION / ACCESS AREA *MITIGATED AT WSDOT SCWHMB 7 6 SLOPES 40% > G __ +_~,il EXISTING WETLAND --•• ===== . _____________ ...... --.. 6 PROPOSED STRUCTURES STRUCTURE TO BE REMOVED GUY WIRES WETLAND BOUNDARY WETLAND/STREAM BUFFER STREAM CENTERLINE EXISTING ACCESS ROAD 5 4 \ \ ) \ I I I I NOTES: 1. NOTE: BASE MAP LOCATION FOR EXISTING ROADS CONSISTS OF BOTH SURVEY AND INTERPOLATION FROM A 1 "= 200' AERIAL ENLARGEMENT (6-1-79) PROVIDED BY PUGET SOUND ENERGY. 2. APPROXIMATE STREAM WIDTH BETWEEN ORDINARY HIGH WATER MARK (OHWM) FOR STREAMS 1 AND 2 IS 3 FEET. 3. WETLANDS A, B AND C HAVE BEEN DELINEATED IN VICINITY OF PROPOSED IMPACTS. PORTIONS OF THESE WETLANDS BEYOND THE PROPOSED IMPACTS HAVE BEEN INTERPOLATED. WETLAND DELINEATION BY OTHERS. 120 SCALE: 1 "=40' DAVID EVANS ANoASSOCIATES INC. 415-118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 PRELIMINARY-NOT FOR CONSTRUCTION 5 4 3 2 ) \}'' J ( / ' i I// I UPPER THUNDER 1 DEVELOPMENT PLAN~,t\~Ki C\TV OF !-ENTOM NOV · 6 2007 .~, :" '. ' F" ~' l, .. ,,":~,~'t }::i;.i E D C B r-cR=E,,=s,oN=-oE=scR=1en=ou,----+,l--------,------I ~-4-Q_5_R_E_N_T_Q_N------+ A ORIGINAL ISSUE TRANSMISSION LINE F,;ELOCATION MITIGATION IMPACT SUMMARY PLAN CADD LAND ARCH REVIEW LOG OUT 3 APPROVAL j GBK JCGA DATE (M/D/Y) 10 / 16 / 07 I I 10 I 16 I 07 I I I I I I 2 • PUGET SOUND ENERGY SCALE: f' = 40' -0" CADD NO: $$0GN$$ SUBSTATION ENGINEERING DEPARTMENT CLASS: SITE DRAWING NO REV NO 0 SHEET 2 OF 8 SCANNED FILE NO E- D- c~ B- ,,,, (l:'. w (J) :::, ,,,, A ,,. w f-- <( 0 "' d,C:T I C<t, \ 0 ~'l> ' t (ft 0 <( 0 ~ I- 0 m _J 10 28 28 ., ( J 0 I , I 8 8 4t701 SF , 454,;2 SF ·+ 1392 + + SF w 7 -- \ ,v ,v V I + 7 6 5 LEGEND ~ ,, ~ -~ ''"'' '"· ~ '"'8 2-11 2 ,, 4-0.00 1000)!:lir j\/,Sla5;flOI -, ... '-8-Rr{~ '·-... S -08 ---. ORDINARY HIGH WATER 25' ETLAND BUFFER PAPER TAKE (PSE) PROJECT ACCESS POINT .__ ~../~" 25688 SF TH-03#0/7 TH-82#0/13 ' 4 LOWER THUNDER HILLS -AREA 2 PRELIMINARY-NOT FOR CONSTRUC 6 5 DAVID EVANS ANoASSOCIATES INC. 415 -118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 4 I 0 /-·---..._~ I I _/ -~-"' < . ' \ Arij.i~ - __315~.134 ~~---., ,, ..... ' ·-.... ---- ' --.. LEGEND: I '.V I I I 40 ' ' ' •.v \ I I I I 80 I 3 EXISTING WETLAND PERMANENT WETLAND IMPACT * PERMANENT WETLAND BUFFER IMPACT * TEMPORARY WETLAND IMPACT WETLAND PAPER TAKE IMPACT . i TEMPORARY STREAM BUFFER IMPAC1 ' CONSTRUCTION/ ACCESS AREA ! * MITIGATED AT WSDOT SCWHMB 2 I ( )I (;'. I I I . ( I I } ( / / 1 t <,n /------""·· / "-..: J \ OJ 01 .,---<z / if) . -z. ,: --n ,,, ,/'J , / i I / I WETLAND 2.82R -AREA 3 ____________ ......... ---... NOTES: SLOPES 40% > PROPOSED STRUCTURE STRUCTURES TO BE REMOVED GUY WIRES WETLAND BOUNDARY WETLAND/STREAM BUFFER STREAM CENTERLINE E D C B NOV·· 6 2007 1. WETLAND DELINEATION BY OTHERS. Y~t?"9\J\""'O 1ro:;~l;l:~A~:~s7:~~::~------+.------l------~1=-4~0=-=s----=R=--=E-N_T_O_N ___ ···~,,,;:~l~~=~:._ _ _LA APPROVA~ DATE (M/D/Y) TRANSMISSION LINE RELOCATION 120 CADD GBK LAND ARCH JCGA 10 115 101 MITIGATION IMPACT SUMMARY PLAN I I 10 I 16 / 07 SOUND ENERGY MAJOR PROJECTS TRANSMISSION CORRIDORS DRAWING NO REV NO 0 • PUGET SCALE: 1 "=40' I / SHEET 3 OF 8 FILE NO SCANNED REVIEW SCALE: 1 "=40' -0" I I CLASS: SITE LOG OUT I I GADD NO: $$DGN$$ 3 2 E- D- B- #> Q:'. w (f) ::, #> A - I 1.0 ~AITIGATION PLAN OVERVIEW 1.1 PROJECT DESCRIPTION 7 I I Several Puget Sound Energy (PSE) transmission line s\rutures mus\ be removed and new strutures installed as a result of Washington State Department of Transportation (WSDOT) roadway improvements to 1-405, loacated in King County, Washington, and the City of Renton. The project will result in both permanent and temporary impacts to critical areas from this work. The purpose of this plan is to present a restoration plan for temporary construction impacts to wetlands, stream buffers and wetland buffers that meet City of Renton CAR standards, as well as a voluntary buffer enhancement pion of targeted areas to compensate for minimal permanent stream buffer impacts and necessary tree removal activities. 1.2 UNAVOIDABLE IMPACTS TO WETLANDS Construction of maintenance access roods and new structures will result in direct impacts to three wetlands as shown in Table 1; wetland 2.9L (380 SF), wetland 2.82R (1570 SF), and wetland A (649 SF), resulting in 2599 SF of wetland impacts. Construction of maintenance access roads and new structures will result in temporary impacts to four wetlands; wetland 2.9L (7217 SF), wetland 2.82R (2244SF), wetland A (154 SF), and wetland B (450 SF) resulting in 10065 SF of wetland impacts. 1.3 UNAVOIDABLE IMPACTS TO WETLAND BUFFERS Construction of maintenance access roads and new structures will result in permanent impacts to five wetland buffers; wetland 2.9L (12127 SF), wetland 2.82R (3563 SF), wetland A (4348 SF), and wetland C (3343 SF) resulting in 25607 SF of wetlond buffer impacts. Construction of maintenance access roads and new structures will result in "paper take" wetland buffer impacts to five wetlands that will result in a reduced buffer width; wetland 2.9L (11714 SF), wetland 2.82R (6955 SF), wetland A (7156 SF), wetland B (2414 SF), and wetland C (2825 SF) resulting in 31064 SF of "paper take" impacts. 1.3 UNAVOIDABLE IMPACTS TO STREAM BUFFERS Construction of maintenance access roads and new structures will result in permanent impacts to two stream buffers as shown in Table 2; stream 2 (2401 SF), and Thunder Hills Creek (429 SF), resulting a total of 669 SF of permanent stream buffer impacts. Construction of maintenance access roads, removal of old structures and installation of new structures will result in temporary stream buffer impacts to three streams; stream 1 (2318 SF), stream 2 (6744 SF), and Thunder Hills Creek (2588 SF), resulting in 34942 SF of temporary stream buffer impacts. 1.4 MITIGATION APPROACH PERMANENT WETLAND IMPACTS Mitigation for permanent wetland impacts to 2,599 SF Category Ill wetland will be accomplished by WSDOT at the Springbrook Creek Wetland and Habitat Mitigation Bank (SCWHMB) under the terms of the rnitigation bankin<J instrument. TEMPOl<ARY WETLAND IMPACTS Mitigation for temporary wetland impacts to 10065 SF of Category Ill wetland will be accomplished with in-place wetland restoration at a 1:1 ratio, totaling 10065 SF as shown in Table 1. PERMANENT WETLAND BUFFER IMPACTS Mitigation for permanent wetland buffer impacts to 2,5607 SF Category Ill wetland will be accomplished by WSDOT at \he Springbrook Creek Wetland and Habitat Mitigation Bank (SCWHMB) under the terms of the mitigation banking instrument. PAPER TAKE WETLAND BUFFER IMPACTS Mitigation for "paper take" impacts to 31064 SF of wetland buffer will be accomplished with in-place wetland enhancement at a 1: 1 ratio, totaling 31064 SF. PERMANENT STREAM BUFFER IMPACTS Mitigation for permanent stream buffer impacts to 669 SF of stream buffer will be accomplished with supplemental/voluntary stream buffer mitigation. SUPPLEMENTAL/VOLUNTARY BUFFER MITIGATION Supplemental mitigation for project impacts to wetland and stream buffers will be accomplished with buffer enhancement. This will include buffer enhancement to wetland A (9,222 SF), stream 1 ( 4937 SF), stream 2 (2544 SF), stream 3 (8038 SF), and Thunder Hills Creek (2032 SF) totaling 17551 SF of voluntary buffer enhancement. MITIGATION AREA ACCESS Access to all mitigation areas shall occur where indicated on \he plans. No staging shall occur within sensitive areas. TABLE 1. SUMMARY OF WETLAND IMPACTS AND MITIGATION Wetland ! Mitigation (Required)] M iligation (Proposed) i I Laclion 2.9L City of Renton Category Rating Ill Permanent Temporary Permanent Wetland Wetland Buffer Impact" (SF) 380 Impact (SF) 7,217 Impact" (SF) 12,127 Wetland Paper Restoration Take (SF) (SF) Ratio 11,714 7,217 1:1 1570 2,244 6,955 2,244 2.82R Ill 3,563 1:1 649 154 7,156 154 A Ill 4,348 1:1 0 450 2,414 450 B Ill 2,226 1:1 0 0 2,825 0 C Ill 3,343 1:1 Total 2,599 10,065 25,607 31,064 10,065 1:1 Wetland Wetland Enhancement Ratio Ratio (SF) Restoration (SF) 11,714 1:1 7,217 1 :1 6,955 1:1 2,244 1:1 7,156 1:1 154 1:1 2,414 1:1 450 1:1 2,825 1:1 0 1:1 31,064 1:1 10,065 1:1 I •· Mitigated by WSDOT al the Springbrook Creek Wetland and Habitat Miti~eition Bank --~-------- TABLE 2. SUMMARY OF STREAM IMPACTS AND MITIGATION Loclion 1 2 3 Thunder Hills Creek Total I 8 Stream State Direct Stream Category Impact Rating (SF) Ill 0 Ill 0 IV 0 Ill 0 0 I Temporary Stream Impact (SF) 0 0 0 0 0 I Direct Temporary Buffer Buffer Impact Impacts (SF) (SF) 0 2,318 240 6,744 0 0 429 25,880 669 34,942 Mitigation (Required) Buffer Restoration (SF) 2,318 6,744 0 25,880 34,942 I 7 Ratio 1:1 1:1 1:1 1:1 1:1 Mitig~ion (Proposed) Buffer Voluntary Buffer RestOration Ratio Enhancement (SF) (SF) 2,318 -4,937 6,744 1: 1 2,544 0 -8,038 25,880 1: 1 2,032 34,942 1:1 17,551 I ' 6 I Enhancement Ratio I 6 (SF) 11,714 6,955 7,156 2,414 2,825 31,064 1: 1 1:1 1: 1 1: 1 1: 1 1:1 I I 5 I 2.0 MITIGATION GOALS AND OBJECTIVES 4 I The mitigation plan will replace lost functions and values identified in the 1-405 Roadway Improvement Project Wetland and Stream Buffer Restoration Report, Puget Sound Energy Transmission Line Corridor Structure Relocations, prepared by Wetland Permitting Services, dated October 16, 2007. The mitigation goals are as follows: 1. Replace lost functions from temporary wetland impacts to 10065 SF of Category Ill wetland by wetland restoration. Wetland restoration will consist of removing invasive weeds and installing native shrubs and habitat features (e.g. standing snags and down logs). 2. Improve functions from paper take impacts to 31064 SF of wetland buffer by in-place wetland enhancement. Road construction impacts to 17,813 SF of wetland buffer by enhancing 221,321 SF of wetland buffer. Wetland enhancement will consist of removing invasive weed species and installing native shrubs and habitat features (e.g. standing snags and down logs). 3. Replace lost functions from 669 SF of permanent stream buffer impacts and 34,942 SF of temporary stream buffer impacts by stream buffer restoration. Restoration will consist of removing invasive weed species and installing na\ve shrubs and habititat features ( e.g. standing snags and down logs). 4. Improve functions with 9,222 SF of additional wetland buffer and 17,551 SF of stream buffer enhancement. Enhancement will occur by removing invasive weed species and installing native shrubs and habitat features ( e.g. standing snags and down logs). Note: No large trees are proposed due to PSE height limitations under transmission lines. 3.0 PERFORMANCE STANDARDS* When evaluated against monitoring data, performance standards are used to determine the relative success of the mitigation project. Failure to meet these general minimum standards throughout the monitoring period will result in implementation of contingency measures. Performance standards are as follows: ----Criterion Year1 Year2 Year3 Year4 Years ---.------ Native plant cover {%1' 10 -20 20-30 30-70 70-90 100 Native woody plant cover {%) 10-20 20-30 40-60 60-80 80-85 Plant survivorship 100 80 80 80 80 Species diversity {see below) Non-native, invasive plant (see below) cover{%) -- PLANT COVER Plant cover goals will be achieved through a combination of planted material and natural regeneration of native species. PLANT SURVIVORSHIP Plants ore considered "dead" when more than 50% of th,• plant is decadent, with the exception of cottonwood, willow and red osier dogwood, which will be considered live if any part of the plant is living. SPECIES DIVERSITY The following minimum standards apply to species diversily of plants, including both planted and volunteer species, within the various strata: • Small trees = 2 species • shrubs = 4 species • ground covers = 2 species CONTROL OF NOXIOUS AND INVASIVES 1. Noxious weeds (identified on state noxious weeds lists) including giant and Japanese knotweeds (Polygonum sachalinense, P. cuspidatum) must be entirely and properly eliminated, and disposed of, from the site prior to 1nstallat1on of native material, and throughout the monitoring period. 2. Reed canarygrass (Phalaris arundinaceae), Scot's broom (Cytisus scoparius), and Himalayan and evergreen blackberries (Rubus discolor, R. laciniatus), must be eliminated prior to planting and thereafter strictly controlled and may not exceed 10% total cover per species (i.e., up to 10% cover of each species may be allowed) throughout the monitoring period. (Note: exception for reed canarygrass in areas with surrounding dense stands of reed canarygrass. In such cases, the objective is to out-compete with woody species by the end of the monitoring period.) 4.0 MONITORING PLAN* Monitoring on restoration areas shall continue for a period of five years according to the schedule in Table 3. An as-built drawing showing randomly-selected areas within each restoration area planted according ta the "Typical Mitigation Planting Layout" (shown in the plans) will be prepared within one month of completion of planting. Thereafter monitoring will commence on the next quarter according to the schedule below. Monitoring will consist of a direct plant count within these areas. Ove~view _photos will be taken from the same vantage points each year to document overall appearance of the m1t1gat1on area before, during, and after construction, as well as of each of the sample plots. Photo points and sample plots shall be marked with stakes to facilitate relocation from one monitoring event to the next. No monitoring will be conducted within the voluntary buffer enhancement areas. Specifically, the monitoring protocol will consist of the following: • Evaluate plant cover and cover from undesirable species within the typical planting areas; • Evaluate survivorship through a direct plant count within typical planting areas; • Visually assess and record wildlife use. Voluntary Wetland Buffer Enhancement (SF) 9,222 9,222 * From 1-405 Roadway Improvement Project Wetland and Stream Buffer Restoration Report, Puget Sound Energy Transmission Line Corridor Structure Relocations, prepared by Wetland Permitting Services, dated October 16, 2007. DAVID EVANS ANoASSOCIATES INC. 415-118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 I 3 I I 2 I TABLE 3. MAINTENANCE, MONITORING AND REPORTING SCHEDULES Year Maintenance Visits Monitoring Report due I Between January 1 und March l 8elween January l and March 1 March 30 AND AND September Between April l and June I AND Between July 1 and August 31 30 Between July 1 and September 30AND Between October 15 and December30 2-5 Between April 1 and June l AND Between July 1 and August 31 September 30 Between July l and September 30 4.3 MITIGATION MAINTENANCE I Over the mon_itorin~ period, a rigorous semiormual maintenance program will be implemented according to the schedule provided 1.n. Table 3 or as need~d t? eliminate undesirable plants and to protect shrubs and small trees from compet1\1on from weeds, repair t~e fences, repair or replace any buffer signage, replace dead plants, ek. An _informal notification (e.g. empil correspondence) of completion of this task shall be provided to the city w1th1n 2 weeks of each ma1ntenapce v1s1t. A formal monitoring report shall be submitted to the city. Mrnntenance of both restoration areas 1nd voluntary enhancement areas will be performed throughout the 5-year monitoring period. , I 5.0 MITIGATION SEQUENCING Construction of the mitigation sites shall 1. A pre-construction meeting; generally include; 2. Marking limit of work for mitigation bbundaries; 3. Installation of TESC measures 4. Removal of invasive species and inst(\llation of 5. Post-construction meeting between all involved 6. Removal of limit of work demarcations; 7. Implementation of monitoring program; 8. On-going maintenance as necessary. · 5.1 PRE-CONSTRUCTION MEETING plants as specified; parties; A pre-construction meeting shall be held onLsite between the project engineer, all necessary construction contrnctors (gener?I. and landscape co~tractors), and Wetland Biologist and or Landscape Architect. During this meeting, site. cond1t1ons, permit, spec1f1cat1ons, and the mitigation plans shall be reviewed. This shall assist all involved parties 1n understanding the intent, specifications, and requirements of the mitigation plan. 5.3 PLANTING PLAN All mitigaton plants shall be native species. ::;ee plant schedule on Sheet 7. 5.4 POST-CONSTRUC.TION MEETING i A post-construction site review of the com_pl.eted work shall be conducted between the Landscape Architect / Wetla.nd B1olog1st and the contractor to verify1 that the plan was properly implemented. This field meeting shall 1dent1fy any d1screpanc1_es bet•~een the plan and the field plantings and if necessary, propose corrective measures. The monitoring period shall commence at final acceptance. 6.0 CONSTRUCTION OBSERVATION ··· The_ Wetland Biologist or Landscape A:chitecq(construcUon observer) shall be on-site periodically during the implementation of the i:n1tigat1on 1rea to review the plant installation. The responsibilities of the construction obs~rver(s) shall include: re1pond1ng to contractor questions regarding unique construction or planting techniques; review o\ construction materials and nursery stock, and review of plant locations. It shall be the respons1b1l1ty of the contractor to verify that pion specifications have been met. 7.0 CONTINGENCY PLAN* In order. to pr?vide_ for the contingency that r,e_rformance standards may not be met during the five-year monitoring period, it may be nec~ssar~ to pr1v1de supplemental plantings. Plant attrition can be remedied by evaluating the cause, and replanting with the same or a more appropriate and approved species. The landscaping contractor s_hould guarantee 100 percent survivorship for one year from initial planting for losses due to defects 1n materials or workmanship. fll plants that are used for replacement must meet or exceed the standards of the in1t1al plantings. The ca~ses of any mortality will be evaluated, and, based upon the resul_ts _of this. evaluation, alternate speci;'_s s117ction rnay occur. Thereafter, for the remainder of the monitoring period, 20 P:rcent shrub attm1on 11111 be allowed without triggering the contingency plan. All trees dead will be re_placed with the same or a mo1e. suitable species throughout the monitoring period. R~placement _will be subject to the same con?1t1ons and be made in the same manner as specified for the original planting. 8.0 PERFORMANCE SECURITY . j . In ~rder to ensure that the m1t1gat1on 1s proierly implemented, including monitoring and contingencies, the project proponent (Puget_ Sound Energy) shallj provide a Performance Bond following City of Renton procedures. The total cost, plus contingency fees, shall be the amount of the Performance Band. The Performance Bond shall become effective following installation aJd approval by the City. I 1 I NOV· 6 2007 P, •·. ,~ ,r > \ '\C·' r, -E -D •,. C -B - , """\,.[,:,~ tH!':.U i'R~rn,;s;i;1oiNNcoi8EssccmRIPPlTilCON;,:,------r---------T-------------------------___:_:_::.:_:____: ___ __j__ A 1-405 TRAN SM ISSI ON MITIGATION RENTON ORIGINAL ISSUE GADD LAND ARCH APPROvAq GBK I JCGA I DATE (M/D/Y) 10 I 16 /07 / / 10 / 16 /07 / / • PUGET SOUND ENERGY LINE RELOCATION REPORT SHEET SUBSTATION ENGINEERING DEPARTMENT DRAWING NO REV NO 0 ,:HEET 4 OF 8 PRELIMINARY-NOT FOR CONSTRUCTION REVIEW LOG OUT 3 / / / SCALE: CLASS: SITE SCANNED FILE NO / CADD NO: $$DGN$$ I I 5 I 2 I I 1 E- D- c- B- A ... w f- <( 0 ... $FILE$ 8 8 7 6 PLANT SCHEDULE (FOR SHEETS 5 AND 6 ) BOTANICAL NAME COMMON NAME SIZE Hf, GAL. SPACING WR-1A WR-1E WR-2 WE-1 , WE-1 WE-2 SHRUBS (FOR CLEARED WETLAND AREA AND WHERE SPECIFIED) Cornus sericea Red Osier Doawood HT 15" -24'>, 2 GAL. 5' o.c. 7 13 Lonicera involucrata Black Twinberry HT 15"-24", 2 GAL. 5' o.c. 7 20 8 26 Physocarpus capi\atus Pacific Ninebark HT 15"-24", 2 GAL. 5' O.C. 13 Rosa pisocarpa Swamp Rose HT 15"-24", 2 GAL. 5' o.c. 20 Rubus spectabilis Salmonberrv HT 15" -24", 2 GAL. 5' o.c. Salix scouleriana Scouler Willow LIVE STAKES 2.5 o.c. 56 Salix sitchensis Sitka Willow LIVE STAKES 2.5 O.C. 30 12 100 16 100 SHRUBS (FOR CLEARED WETLAND/STREAM BUFFER AREAS ONLY) Cra\oegus douglasii Block Hawthorn HT 1ci"-?4" ? (;Al. 5' O.C. Rubus parviflorus Thimbleberry HT 15" ?4" ? GAi. s· o_r Symphoricarpos albus Snowberry HT 15"-24" 2 GAL. S' f\ r Holodiscus discolor Ocean Spray HT 15"-24" 2 GAL. c,' /1 r Oemleria cerasiformis Indian Plum HT 1 '," '') A." ') 0AI ,' n r Roso nulkono Noo\ko Rose HT 15" 24" 2 GAL. ,;' '"' " ....... ,lfr.1i, '""' Tell , C-rnoo HT 15" 24" 2 GAL. c,' n r Ribes sonquineum Red-flowerina Curran\ HT 15"-24" 2 GAL. ,;• n r Philadelphus lewisii Mock oranae HT 15"-24" 2 GAL. c,' 0 r, AREA TOTALS 30 12 7 147 24 208 5 4 3 2 E QUANTITY (QUANTITIES FOR PLANTING AREAS SHOWN IN SHEET 5 OF 8) I (QUANTITIES FOR PLANTING AREAS SHOWN IN SHEET 6 OF 8) WE-3 WE-4 BR-1 BR-2 BR-3 BH-4 BR-5 BR-6 BE-1 BE-? BE-3 BE-4 BE-5 BE-6 WR-3 WR-4 WR-5 WR-6 WE-5A WE-5 WE-6 WE-7A WE 78 WE 8 WE 9 WE-10 WF-11A WE 11 E WE 12 BR 7 TOTAL 28 13 17 8 10 10 5 5 7 20 10 11 1g4 43 10 10 13 20 8 10 25 15 20 10 10 10 265 10 10 10 5 10 20 13 10 1 ~, 28 1n 50 22 19 21 15 20 7 20 15 0A_7 43 fl 85 16 30 30 40 13 62 45 60 13 54 178 g~9 D 200 30 1 A 0/1 28 7 30 0~ 26 7 200 40 100 40 60 200 ,r, 0/1 20 20 30 50 1 455 5 6 12 15 10 23 10 46 9 16 152 5 5 6 5 22 31 SA 15 92 35 35 16 296 597 10 5 10 4 30 cr, 57 15 115 '' 35 16 296 658 7 22 1n 46 85 5 5 5 5 10 30 22 34 10 46 26 26 16 119 349 119 119 23 9 17 17 "" 5 11 30 22 23 15 69 17 17 16 176 401 427 69 37 21 49 9 171 187 262 104 506 209 216 105 227 94 128 123 102 8 249 86 65 67 67 73 75 10 31 1,184 5,389 C LEGEND WETLAND BOTANICAL NAME COMMON NAME PLAN Tl ING AREA TREES/ LARGE SHRUBS Crataegus douglasii Black Hawthorn Acer circinatum Vine Maple ORDINARY HIGH WATER LINE (OHW) Scouler Willow Salix scouleriana (TYPICAL) Salix sitchensit; Sitka \i\lillow NOTE: Each willow symbol is equal to 16 live stakes. STREAM SHRUBS Sambucus racernosa Red Elderberry ~!~ Cornus serice,1 Red Osier Dogwood Physocarpus capitatus Pacific Ninebark Symphoricarpo$ albus Snowberry WETLAND ~ Holodiscus discolor Ocean Spray PLANTING Lonicera involucrata Black Twinberry AREA ®---Oemleria cerasiformis Indian Plum UPLAND (BUFFER) 0-----------_ Rubus spectabilis Salmonberry ' B Rosa nutkana Nootka Rose PLANTING AREA (TYPICAL) GROUNDCOVER Medium Bark Mulch TYPICAL MITIGATION PLANTING LAYOUT SCALE: 1" = 20' NOV -6 2007 ,:;R;::E~:;;:s::;::,oN=DE::;::SC::;::R::;::IP,;::TIO:::N-, -------t-----------,---------------------------------l-A ORIGINAL ISSUE i APPROVA DATE (M/D /Y) CADD GBK 10 / 16 / 07 I I LAND ARCH JCGA 10 ; 16 I 07 I I 1-405 RENTON TRANSMISSION LINE RELOCATION MITIGATION PLANT SCHEDULE • PUGET SOUND ENERGY SUBSTATION ENGINEERING DEPARTMENT DRAWING NO REV NO 0 PRELIMINARY-NOT FOR CONSTRUCTION DAVID EVANS ANoASSOCIATES INC. 415 -118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 REVIEW I I SCALE: 1 "=100'-0" SHEET 7 OF 8 CLASS: SITE SCANNED FILE NO LOG OUT I I GADD NO: $$DGN$$ 7 6 5 4 3 2 E- D- c-i,,. B- A 8 7 MITIGATION SPECIFICATIONS= GENERAL 1. ALL WORK SHALL BE DONE AS SHOWN IN THE PLANS AND IN CONFORMANCE WITH THE PUGET SOUND ENERGY (i'SE) PROJECT GENERAL PROVISIONS AND SPECIFICATIONS FOR THIS PROJECT. THE PLANS SHALL TAKE PRECEDENCE OVER THE SPECIFICATIONS SHOULD THERE BE ANY CONFLICT. 2. THE WETLAND BIOLOGIST /LANDSCAPE ARCHITECT SHALL BE NOTIFIED 48 HOURS IN ADVANCE OF CONSTRUCTION lf'.I ORDER TO BE ON-SITE TO OBSERVE CONSTRUCTION. 3. PLANS ARE SUBJECT TO CHANGE BY WETLAND BIOLOGIST /LANDSCAPE ARCHITECT BASED ON FIELD CONDITIONS. 4. A PRE-CONSTF!UCTION MEETING BETWEEN THE OWNER, CONTRACTOR AND WETLAND BIOLOGIST /LANDSCAPE ARCHITECT SHALL OCCUR PRIOR TO CONSTRUCTION. SURVEY /STAKING 1. PRIOR TO CONSTRUCTION, ALL LIMIT OF WORK, CLEARING AND GRUBBING AND VEGETATION TO REMAIN BOUNDARIES SHALL BE SURVEYED, STAKED AND FLAGGED. HIGH VISIBILITY FENCE SHALL BE INSTALLED TO THE DRIPLINE OF TREES TO REMAIN. THE LANDSCAPE ARCHITECT/WETLAND BIOLOGIST SHALL APPROVE l~INAL LAYOUT OF ALL STAKED AND FLAGGED AREAS. T.E.S.C. 1. TEMPORARY EFiOSION AND SEDIMENT CONTROL MEASURES SHALL BE INSTALLED AS SHOWN IN THE PLANS, PRIOR TO COf'.ISTRUCTION AND SHALL CONFORM WITH THE PROJECT'S STORMWATER POLLUTION PREVENTION PLAN. 2. ALL NON-PLANTING AREAS DISTURBED BY MITIGATION ACTIVITIES SHALL BE SEEDED WITH HYDROSEED MIX FOR EROSION CONTROL. PLANTING GENERAL 1. APPLY NON-SELECTIVE, NON-RESIDUAL HERBICIDE (RODEO TM OR APPROVED EQUAL) TO HIMALAYAN BLACKBERRY STANDS IN ALL PLANTING AREAS WITHIN THE LIMIT OF WORK. HERBICIDE SHALL BE APPLIED BETWEEN APRIL 15-JUL Y 15. HERBICIDE APPLICATIONS SHALL BE PERFORMED IN ACCORDANCE WITH MANUFACTURER'S INSTRUCTIONS AND ALL APPLICABLE FEDERAL AND STATE LAWS AND COUNTY ORDINANCES. 2. GRUB TO DEPTH SUFFICIENT TO REMOVE ALL STUMPS, LARGE ROOTS, ROOT CROWNS, AND OTHER VEGETATIVE MA TEl~IAL. ALL VEGETATIVE DEBRIS SHALL BE REMOVED FROM SITE. 3. ALL PLANT MATERIALS SHALL CONFORM TO THE AMERICAN NURSERY LANDSCAPE ASSOCIATION (ANLA) STANDARDS FOR NURSERY STOCK (ANSI Z 60 1-2004) FOR GRADE AND SIZE UNLESS NOTED OTHERWISE ON PLAN. 4. SUBSTITUTIONS SHALL BE AUTHORIZED BY THE WETLAND BIOLOGIST/LANDSCAPE ARCHITECT. IF PLANTS ARE NOT AVAILABLE, CONTACT THE LANDSCAPE ARCHITECT FOR APPROVED SOURCES OR SUBSTITUTIONS. 5. PLANT MATERIALS SHALL BE INSPECTED AT THE NURSERY, OR PROJECT SITE, BY THE WETLAND BIOLOGIST/LANDSCAPE ARCHITECT PRIOR TO INSTALLATION. 6. PLANTING SHOULD OCCUR BETWEEN OCTOBER AND MARCH TO TAKE ADVANTAGE OF SEASONAL RAINS. 7. NO PLANTING SHALL OCCUR IN STANDING WATER OR SA TU RATED SOILS. IN THIS EVENT OF THIS CONDITION, PLANT INSTALLATION SHALL BE POSTPONED UNTIL CONDITIONS ARE APPROPRIATE. PLANT INSTALLATION 1. WETLAND BIOLOGIST/ LANDSCAPE ARCHITECT SHALL INSPECT THE METHOD AND LAYOUT OF PLANTING USED BY THE CONTRACTOR PRIOR TO PLANT INSTALLATION. 2. ALL SHRUBS AND STAKES SHALL BE INSTALLED PER THE PLANS AND AS SHOWN IN THE THE PLANTING DETAILS. 3. ALL BUFFER PLANTING PITS SHALL BE AMENDED WITH CEDAR GROVE 2-WAY TOPSOIL MIX (OR APPROVED EQUIVALENT). WETLAND PLANTING PITS SHALL BE AMENDED WITH CEDAR GROVE COMPOST (OR APPROVED EQUIVALENT). AMENDMENT SHALL BE 1: 1 RATIO OF EXISTING NATIVE SOIL BACKFILL AND SPECIFIED AMENDMENT. REMOVE EXCESS EXISTING SOIL FROM SITE. 4. ALL PLANTING AREAS SHALL RECEIVE A UNIFORM 4" LIFT OF MEDIUM BARK MULCH. 5. TIME RELEASE FERTILIZER SHALL BE APPLIED TO PLANT PITS (OSMOCOTE TM OR APPROVED EQUIVALENT) PER MANUFACTURER'S INSTRUCTIONS. NO FERTILIZER SHALL BE PLACED IN WETLANDS. 6. BROADLEAF P-4 POLYMER (OR APPROVED EQUIVALENT) SHALL BE APPLIED TO PLANT PITS PER MANUFACTURER'S INSTRUCTIONS. 7. BIO ORGANICS ENDOMYCORRHIZAL (BEi) (OFl APPROVED EQUIVALENT) SHALL BE APPLIED TO PLANTING PIT PER MANUFACTURER'S INSTRUCTIONS. WARRANTY 1. THE CONTRACTOR SHALL WARRANT ALL MATERIALS AND WORKMANSHIP FOR A PERIOD OF ONE YEAR FROM FINAL ACCEPTANCE. THE CONTRACTOR IS RESPONSIBLE FOR ALL PLANTS AND MATERIALS DURING INSTALLATION AND THE WARRANTY PERIOD. CONTRACTOR SHALL WARRANT ALL PLANT MATERIALS TO REMAIN ALIVE AND HEALTHY DURING THIS PERIOD. THE CONTRACTOR SHALL REPLACE ALL DEAD OR UN HEAL THY PLANTS, PER PLANS AND AS IDENTIFIED BY THE LANDSCAPE ARCHITECT/BIOLOGIST DURING THE ONE YEAR WARRANTY INSPECTION. MAINTENANCE L ALL PLANT MATERIALS SHALL BE IRRIGATED BY THE CONTRACTOR THOROUGHLY WHEN PLANTED AND DURING THE WARRANTY PERIOD. SUBMIT IRRIGATION METHOD TO OWNER FOR APPROVAL. ALL PLANTS SHALL RECEIVE AT LEAST ONE INCH OF WATER PER WEEK DURING THE FIRST GROWING SEASON (MAY 15 TO OCTOBER 15). 2. ALL MITIGATION PLANTING AREAS SHALL BE MAINTAINED AS PER MAINTENANCE REQUIREMENTS ON SHEET 4. HABITAT FEATURES 1. WETLAND BIOLOGIST/LANDSCAPE ARCHITECT SHALL APPROVE PLACEMENT OF HABITAT FEATURES PRIOR TO PLANTING. 2. WOOD SHALL BE FIRM, FREE OF ROT, DISEASE AND DAMAGE. WOOD WITH STRUCTURAL DEFECTS SUCH AS SPLITS, CHUNKS CUT OUT, OR GOUGES WILL NOT BE ACCEPTED. WOOD SHALL BE STORED IN A MANNER THAT WILL PREVENT DAMAGE TO THE WOOD INCLUDING BRANCHES AND ROOTWADS. 8 7 6 6 5 MIN. 2 X ROOT BALL SHRUB PLANTING HYDROSEED MIX ROOT CROWN 1 "-/' ABOVE PLANTING SOIL GR1\DE --4" BARK MULCH, HOLD BACK 2"-3" AWAY FROM MAIN STEM 3" HIGH RIM BERM FIRMLY HAND COMPACT 3" MOUND BELOW ROOTBALL NOT TO SCALE KIND/VARIETY % BY WEIGHT MIN. % GERM PERENNIAL RYEGRASS 60% RED CREEPING FESCUE 30% HARD FESCUE 10% APPLICATION RATE: CANFOR ECO-FIBER WOOD FIBER MULCH: NUTRICULTURE SEED STARTER SPECIAL FERTILIZER CANFOR ECO TAC GG 1200-TACKIFIER: STAY MOIST MOISTURE RETENTION AGENT HYDROSEED MIX 90% 90% 90% 120 LBS/ACRE 2,000 LBS/ACRE (16-45-7): 200 LBS/ACRE 60 LBS/ACRE 60 LBS/ACRE STRAW WATILE B TO IO INCHES IN D1AME1£R SECTION 4 3 TRIM STAKE TO PROTRUDE 12" ABOVE FINISHED \ GRADE WITH A MINIMUM OF 2 LEAF NODES EXPOSED INSERT STAKE WITH BUDS POINTING UP USE CUTIINGS 24" MIN. SOIL CUT END TO A POINT AND PRE-DRILL PILOT HOLE FOR EASIER INSTALLATION LIVE STAKE PLANTING 12'-18' LENGTH LEAVE ALL EXPOSED BRANCHES INTACT (TYPICAL) 12"-18" DBH. MAPLE, COTTONWOOD OR ALDER LOG HABITAT LOG CUT TOP SQUARE FOR EASIER INSTALLATION, PROTECT TOP FROM SPLITIING. TRIM OFF BRANCHES WITH CLEAN CUTS MIN. BURIAL 12" INTO SOIL NOT TO SCALE RETAIN ROOT WAD ON TREE 2 NEST BOX (SEE TYPICAL DETAIL) 8" MIN. DBH NATIVE CEDAR. FIR OR HEMLOCK LOG WITH MIN 5 BRANCHES IN UPPER 1 O' OF LOG FIRMLY COMPACT BACKFILL AROUND BASE. 1 /4"x4" NOTCH AT top OF SIDE FOR AIR VENTILATION 25' ~! \~ 1 '' I l~...!..!m!.llmWml l \ 8' MIN. I I I I I I I I I I I l ___ J_~ STANDING SNAG NOT TO SCALE 4-1 / 4" DRAIN HOL!=:S IN BOTTOM NOT TO SCALE WOOD STAKE * X Yt X 24 INCHES 3 TO 7 INCHES 8 INCHES MINIMUM STRAW WATTLE INSERT NOT TO SCALE TIGHTLY ABUTT ADJOINING WATTLES FLOW PLAN \>1EW TYPICAL NEST BOX STAPLES OR WIRE RINGS TO ATTACH FABRIC TO FENCE FILTER FABRIC MA TERI AL IN CONTINUOUS ROLLS ---IL 2"X2" WOOD POSTS, STANDARD OR BETTER, OR EQUIVALENT BURY BO~TOM OF FILTER FABRIC I MATERIAL IN 8"X12" TRENCH I ' 5· MAX. FIUTER FABRIC MATERIAL ----'<-'° WIRE 1MESH SUPPORT FENCE FOR pLIT FILM FILTER FABRIC PROVIDE WASH~D GRAVEL OR g~~~~~6ED NA~IVE SOIL AS ~====~' ,. 1111 1111 , 1111 :c'•i B.,' 011c..,1.1 =11=11 =1...-111- 2' 1111 ·.\\:.;; 11= _.._~1111 Y:i:, ,c: 8" 0 I N ' <O I "' NOT TO SCALE WIRE MESH SUPPORT FENCE FOR SLIT FILM FABRICS ' 0 I l[) ----+- lll§alll ' <O 0 I --' ---'I.--<O I N ' 0 I L<) SEDIMENT FENCE NOT TO SCALE NOV · 6 2007 . ·'.· .. ,~-:~HJl!f~ ,. ". c,,,.,1 t ,".,,J E D C B IRERE"'vissia1oi<N oeoescscRRii1e;;i;T1owN,-----:-------,----------------------------I-A 1-405 RENTON TRANSMISSION LINE RELOCATION MITIGATION SPECIFICATIONS AND DETAILS DAVID EVANS ANoASSOCIATES INC. 415-118th Avenue SE Bellevue Washington 98005-3518 Phone: 425.519.6500 ORIGINAL ISSUE CADD LAND ARCH APPROVAY GBK JCGA DATE (M/D /Y) 10 I 16 I 07 I I 10 1 16 1 07 I I • PUGET SOUND ENERGY SUBSTATION ENGINEERING DEPARTMENT DRAWING NO REV NO 0 SHEET 8 OF 8 I I I I CADD NO: $$DGN$$ SCALE: CLASS: SITE SCANNED FILE NO PRELIMINARY-NOT FOR CONSTRUCTION REVIEW LOG OUT 5 4 3 2