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03528 - Technical Information Report
MODIFIED TIR WITH REVISED DETENTION� N 1NATER QUALITY� AND CONVEYANCE � CALCULATIONS BASED ON MODIFICATIONS TO � THE EXISTING SMURFIT MATERIALS RECOVERY FACILITY SITE Smurfit Material Recovery Facility Site South Side of S.W. 34th Street between Lind Avenue and Oakesdale Avenue S.W. Renton, Washington Prepared for: �'ZS'�� Eastridge Partners LLC ���R�^ACpes 11911 N.E. 1 st Street No. 101 ���`� �-' 1`�of Bellevue, Washington 98005 (425) 462-9400 Es, �rs �F��`� UN �, > f June 25, 2009 3 Our Job No 13182 �Y�AV � �►I� � CIVIL ENGINEERING, LAND PLANNING, SURVEYING ` 18215 72ND AVENUE SOUTH KENT,WA 98032 (425)251-6222 (425)251-8782 FAx n 2 BRANCH OFFICES ♦ OLYMPIA,WA ♦ TNCOMA,WA ♦ CONCORD,CA ♦ TEt�AECULA,CA s� �I�l��� www.barghausen.com �r ��v ���� t Nc,��� 3�� ' TABLE OF CONTENTS 1.0 INTRODUCTION/GENERAL INFORMATION EXHIBITS EXHIBIT A PIPE CONVEYANCE CALCULATIONS EXHIBIT B PIPE CONVEYANCE BASIN MAP EXHIBIT C DETENTION SIZING CALCULATIONS DATED JUNE 22, 2d09 EXHIBIT D DETENTION AND WATER QUALITY SIZ.ING COMPARISONS EXHIBIT E TECHNICAL INFORMATION REPORT FOR THE EXISTING SITE DATED JtJNE 26, 1995 I 31 R2.U08.doc � 1.0 INTRODUCTION/GENERAL INF4RMATION 1 A INT1tODUCTION/GENERAL INFORMATION The existing Smurfit Materials Recovery Facility Site is approximately 4.8 acres in size. There is a�proximately 4,08 acres of impervious surface on the site under existing condirions. With the proposal for this development that amount of impervious surface will not change. The proposal for this development is to remove the existing water quality and detention facilities both considered impervious surface and apply asphalt over a portion of those facilities and construct two separate building additions in two separate phases of development. The existing conveyance system will be modified slightly to route runoff into a new weddetention vault located in the southwest corner of the project site. The site will utilize the same outfal] pipe from the site as it does under existing conditions and discharge to Springbrook Creek with very little change in flow rates coming off the project site under proposed conditions. T'he same criteria for the detention sizing for this proposed site was utilized with this new development and all those criteria are documented in the Technical Information Report dated June 26, 1995 attached in the Exhibits section of this report. A pre-developed and post-developed hydrograph was determined for both existing as well as the proposed site to determine if the site conditions could be�natched with the new mode] being used to size the facilities. The same methodology was used, which is the Santa Barbara Urban Hydrograph (SBUH) methodology; however, due to modeling differences, both pre-developed and post-developed flow rates were slightly higher with the new model but not by an appreciable amount though. However, for purposes of sizing the flow control facility for this development the peak release rates were matched with previously prepared calculations so that discharge from the project site will not be any different under proposed conditions as they were under existing conditions. In addition, for the water quality portion of this development, the wet pond volume required in 1995 was 6,970 cubic feet; however, with this 2009 vault modification the wet pond volume provided in the wet vault is 21,504 cubic feet, which is over twice as large as what is provided in the water quality ponds under existing conditions. Please refer to the calculations on the following pages of this report which can be compared with the Technical Information Reported dated June 26, 1995 for a complete description of how the proposed water quality and detention facilities were sized for this development, The pipe conveyance facilities were sized by the Modified Rational Method and using the same parameters as were used in the Technical Information Report dated June 26, 1995. 'The 25-year storm was conveyed with 3.4 inches of precipitation and not surcharging any catch basins or inanholes. Please see the following�a�es for the calculations and basin map. 13182.60S.doc � E"'� H � �I � � w EXHIBIT A PIPE CONVEYANCE CALCULATIONS 73182-25.x1s BARGHAUSEN CONSULTING ENGINEERS•PIPE F�OW CALCUTATOR using the RaKonal Method 8 Marming Formula KING COUNTY OES�GN FOR 25 YEAR STORM JOB NAFIF: SA�URFR N�i�E E�TER pE�AULTS nIJ[?STCR;;DAT�I SEFORE eFGt4iV!'dG JOSb: 13182 OEFAULTS C= 0.9 rr� 0.014 FILE NO'73182-25.XLS d= 72 Tc= 8.3 A=Coatdbuting Area(Ac) Qd=Design Flow(ds) COEFFICIENTS POR THE RATIONAL METHOD'Ir'-EQUATION Ct Runo11 Coe?wimt Qf=Full Capadty Flow(ds) $TQRi�I!•r 3r Tc=Time of Co�cenhation(min) Vd=Velotity at Desig�Fbw((ps) 2YR 7 5�9 C.Sf. 1=Intensiry et Tc('mlhr) Vf=Velociry at FWI Flow(fpsl iOYR 2 e< Q,�PRECIP= 3.� d�DiemetEr Of P'rye(In) s=Slppg ot pipE(%) 2.SYR i fr C:t Ar- 2.66 L=Length ol Pipe(R) n=Merming Roughness Ccetfidenl 50vR ?.75 0 FS Br- 0.65 D=W atm Deplh M Od p�) TY-Travel Thne at vd(min) 1:AYR 2 8 t G.63 FROM TO A s L d TC n C SUM A A'C SUld A•C I Od Qt Qtllqf p:d D Vf Yd Tt -__.`• ...... .:... ...�c_ ----- ------=s:::-----u ::..`e ------ c:.s:..,eaeaa en=== ------ -----_ ....ea xz=u:a va:-- �: -a=ee- ____'_ ______ ____'_ __"_ ____� ______ _'__� _____ vs_ R01 EXCBt 0.93 1.00 85 A tU O.OU 0.9 0.93 0.84 n8e +,Ap �i7 i;9 �,na� 4�G� r,g3 322 3.83 0.39 EXCBt EXC64 1.38 0.30 176 15 18.7 0.014 0.9 2.31 7.24 2QE t.39 2.f33 32P C.8?t :%)t tOE� 2.fi8 3.01 0.97 RD2 EXC82 0.41 1.00 75 8 15.9 0.014 0.9 'J.42 0.38 0_th 5.5D 0.5' L'2 OS�< .�;7: c;"1 3.72 3 24 0.39 EXC82 ExC63 0.87 O.aO 126 12 18.3 0.014 0.9 +.03 0.55 0.53 �.47 s 3�: 2^9 0.652 .,-.?9 7 1� 2.�7 2.8� 074 EXC83 EXC84 0 74 0.50 t06 12 17.1 0.074 0.9 � t? 0.73 ?�S t.43 +..51 2 3� 0.E-: L F°:� ?i' 2.9P. 3.17 0.56 RD3 EXC84 0.11 1.00 78 6 12.1 0.074 0.9 0.17 0.10 ^7�' i i9 q tB ^:% D.3a0 ����;! i�'J <6' 2 41 0.54 EXCB4 CBS 0.33 0.67 27 18 19.1 0.014 0.9 0.3; 030 .,;, ?.33 �59 '99 0.59s ':�5! �?C s.52 �.59 0.10 CB6 CBS 0.26 2.)3 55 12 6.3 0.074 0.9 G 9d 0.23 f 23 2.73 ^F�l ..��i 0.1'7 :::i.� ;%?fl 8 9i� 4 62 020 CBS VAULT 0.08 2J2 92 1B 19.2 0.014 0.9 C.GR 0.07 ?.83 '..33 S.J9 tG.D8 D3'6 ':3yS G'3 4.1! 8.07 0.19 Pape 1 EXHIBIT B PIPE CONVEYANCE BASIN MAP m �� : 3 T N PLAN I� � � � PRELIMINARY GRADING, STORM DRaINAGE AND UTILlTY MODIFICA 10 , tlf �� i � � Q,� �� I , . . 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' � OElEN110f!YA TO REPUCE ( � ^^ � . � .. � � - _.'. - -- __.- .-� - .. . . . . OCISTVIG PoND NiD BIOSIYKE i z �n . �_ / . 19.50, p .-r�� .•.. .. _ � TOP EL-18.0 � � ; N N Z N N �� : ' `' .. �.1 . . . . . . . .�.:. - _i Y . _ .<�1 / 1Wf. M$Qa16.00 ( I I i i � �Y�� c�ai ��:�. �i I'Y. _� ,., � ir•i Y � ��. - _. . _. .. . �. .-...�_. / .-____'-1fz ir 1rEJ w vi- - -- __ _ ! l� } NEM' 13' STATiC EL�1f.50 ( I ' ' -_ BOTTOAI EL�7 00 „ I I � j I ( � �--� -�_��--R�.-�-—----—�' _ � - : � 1 '` ; iI � i N ���N�. . ,•� .. ,. :,f �. .. ---"---"--' - _ _+...--_� 3 �'H -�. IEt STORM YM COMROI STRULTURE � � � ; `(I,� ab,r � �� � � '�1 �'S �\ c , dYER EX.PFE b�DE VMAT � ( j f V s . - �� . y ,.���, - t. � \���� � 10.50 i ( ,., o � � �,:. .. .�� .\�` e .w �: -a�...._ II � Q YI� � . 1 `.`} _. �r,:�2!'GL�.....k "� .. \`� \ � y r ._�— iXI.1�Ou'tfx.'T \ �' q,: Mee � � '-F �-— �b �� j _T - -=--= ----—----— - — ---------------——------ \�� \ �. a. y i , ; o b8 a�oNs I __ i ; = Pf�.GRAD,S'if�l,Ut�..�1EET C2 EXHIBIT C DETENTION SIZING CALCULATIONS DATED JUNE 22, 2009 Appended on: 10:14:59 Monday,June 22, 2009 13182pre Event Summary _ ... _-- -- . _. _..__ - .___ . _ . _.- .----. -- _ _._ .__ ________ . _ __.. � Event Peak Q (cfs)�Peak 1' (hrs) Hyd Vol(acft)�Area (ac)(Method Raintype _ _ __.. _._ __ ..__,_. __ _.._ _--.__ . ___ ..__ ..___.__. _ .__. _ . . __ _ �6 inonth 0.1201 I 9.67 ; 0.1411 4.8000 SBUH TYPE l A � 2_year _I_ --0.3778 _ _I.. __..9.00_ __!... . 0 3396____..I 4.8000 _�_..SBUH �TYPElA __._._._ .. __ -----._. . _ . �..---- ---- i 10 year � 0.7956 I 8.67 � 0.6308 � 4.8000 SBUH ,TYPElA _._ ._.�-------- ------ -._.�.___ __ � 25 year � 1.0511 j 8.67 I 0.8040 � 4.8000 � SBUH �TYPEIA � ..____.__._.._ . ---...____ ___ .__ _---_..----.__._.--- _._._._.,___._._---___....____ _.__ _. ____..---_ ._ �100 year� 1.3159 � 8.67 0.9824 4.8000 � SBUH �TYPElA Rccord Id: 13182prc _ , . _ _ _ _._ _._ _. _ .. _ _ .. _ _ _ _. __ _ .- - -- _ , . ._. _ _ _ _.- -; jllesign Mcthod � SBUH �Rainfall typc � TYPEIA _ _._-- -- _ _ __.___. _ _. - .-.--. ... __ _ _ --.. _. ._ ._ . _ __. .__ _ _ _ , . _ __ ___.__. .___.__. jIIyd Intv � 10.00 min �Peaking Factor � 484.00 ,.__ _-- ---_ __. _. ... .. _ __....., __._ _ __ _._ __. . _ ____.__ __ . ._ _.. _ _.__.__ ___ _. _ _._ _--. _ ._ i � Abstraction Coeff Q.20 ---._.._ _ ._ _ __._ __ _. __._ . . __..� . _ _. . ._ _ _ . . _.__ _. ._ __., �Pervious Arca � 4.80 ac �DCIA I 0.00 ac I , _ _ __ . . 'I'crvious CN ; 86.00 'llC CN j 0.00 _ , _ _ _. . ;Pcrvious 'I'C � 80.53 min �llC 1'C � 0.00 min ' � _. _._. _- -- _ . ._. _ . _. _. -- --- ______-. . . --- ..._ ___ -- - _ - --:- _- _ _ . _ _ __ ' '� Pcrvious CN Calc ;i . .. _ .____. . _ _ _. __ ... . ._ .. .._- - _ . _ ___ ...__ . _ _ __.. ._. - - -- .-- ._ ___,._..._____. __ ;,- :y llescription I SubArea ( Sub cn -- -- ... .. ._ _._ _ ___ _ .__._ __. . _ _ __ ... _ __ . _ _ _ __ � Golf crse/cemetenes/landscaping(>75%grass) j 4.80 ac � 86.00 � _ ...__ _ __. _ _ __ --- - __. � ___ __ �� Pervious Composited CN (AMC 2) i 86.00 � . _ . __ _. _ . _ ._ _. _ .. _ _.. _ _. _. _. _ . _. _ . ._ _ _- - __ _ _ _ _ _ _ _ _. _ i I Pcrvious TC Calc ! ; _ --- -- -- - _ _ __ --- . .. __. ---- .- _ -- .._ __ .. . .. ._.._. . _ _ ._ _. .� (� Type j Description � Length I Slope � Coeff � Misc j TT _ .. . _ ._ � _. _. _ _.. _ . . __ _._ .. .__.. ,rrixed � _ � �80 53 min _ _ . .__ _ _.. . _ ___. �_ .. .. .. .._ _____.._.. _._ � . ..__.._�---- -- --- ..___. . . ._ �' Pervious TC � 80.53 min �� ,� . _ _.__. __ . _ _. ____ __...�. . _.. ----- ._- - � i I.icensed to: Barghausen Engineers � i- i I Appended on: 10:14:36 Monday,June 22, 2009 13182dev Event Summary ,.__..__. ._ --- .- - - __._.... ... , ._ . . _.___. _._ , __. __ _ ___ _. I Event �Peak Q (cfs)�Peak T (hrs)�I3yd Vol (acft) IArea (ac) lMethod Raintypc i +6 month J 1.1637 f 8.OU j 0.3927 ; 4.8000 � SI3UI-� jTYP�IA , � 2 year i 1.9778 I 8.00 ; 0.6688 � 4.8000 1 SBUH �TYPElA � - -- - - - .. _. . ... . � 10 year � 2.9985 8.00 � 1.0209 i 4.8000 I SBUH �TYPEIA � _ ._- --... .- - - - --. ..__ _ . _- - - --�._ _ � 25 year � 3.5650 � 8.00 � 1.2180 � 4.8000 � SBUH ITYYElA . _.._ _____ _ ._. .--- - . .. . _..____ _ _ ._... . _ . _ _ _. 100 year� 4.1308 ; 8.00 ; 1.4156 4.8000 i SBUH TYPElA Record Id: 13182dev ---- -- __ __ .__ _._..__ _.. .___ _ _ ._,.--- - - --- _ __ . _ _ ___-- ._ _._ ._-- �. ...� Design Method � SBUH �Rainfall type TYPEIA � , ___ _._. _ .. ..___._._.__.__._ ..... . . . .____.._. . _ _ .. _._._._ __ ._ _ _____ ..._. ----- -_ � _-----.----_ ___ �liyd Intv � 10.00 min IPeaking ractor � 484.00 _ ---____. _.. _.__.__ _ . . ._. .__. .___. _ . __ . �. . _ ._...�_._ ...._____. ___. _ _ _..__._..- - ; � jAbstraction Coeff � 0.20 ; _ _ ______. _._ __.___._ _.- -. - _. _ __ __ _ .---- --_ ._ _ . . _..._ _._ .._. . _._.. _ .. __�._ __ iYcrvious Arca I 0.72 ac lDCIA ( 4.08 ac _ j _ _ . _ _.._ _ . _. ._ ;1'crvious CN ' 90.00 �DC CN � 98.00 _ _ . _. _ , _ _ . ._._; _ _.. . _.. .... _. ___-- f Pervious 1'C � 6.00 min �DC TC, ( 6.00 min , . . . -- -___ _.__- - - - _....._ _----- _ _ ___ . _T_-----___- ._ .___--__ -__... _. ..__ __ . __.. _ _.._ __ _ __ .. � ! Pervious CN Calc ._ _ _ --- . .. ._ ___. _ _.. . _.., ._. _ _ . . . . _ ^ Description I SubArca � Sub cn ' . __ . ___ _ _- - _ ._ _. _ . ._ .. , __ _ ____. . ._ . _ ___ . � i� Open spaces, lawns,parks (>75% grass) � 0.72 ac ( 9G.00 . . .__ _ _ _ _ - --- _ . __ . _ _ .. _. . .__-- -- �� Pervious Composited CN (AMC 2) 90.00 j _ _. . . .. _ __.. _ __ . . ._. _ ..__ .. _ _ . _. . _--- _..___ -- - -- --- - . _ __ _ . . . .-- _._ . - -.___ . _.. , - - . ..__ _ __! ;i Pervious 'TC Calc � _ _ __. _ _ . . , __._._ , - . . _.... _. . _ _.._ _-- ._... ;� Type� i I)escription � Length � Slope � Coeff � Misc ( T'I' :,- - -. _ ;._ . _- i --�- - -- - _--- - --_ .--- - -- -�--- _ _ ��I�ixed i �6.00 min _ ,I Pervious TC r 6.00 min i. _ _.__.__ ___ _ . ___.... _. _..... ._____._.. __ .._ _ --- _.._. _..._._. __ ._--. -____._.__ _.. , ..__ _._ ... ._, _ __.. ..._ _ .____ _ __ __ _. ___. __.- ---- --- . _. _ ._ . . ._ __ _ . __. _._ ____ . _ . _ .. ___ __ -_ ._.� ;� Directly Connected CN Calc ��------�-- _ _._ _. ._ __ _---_ ____. p.._ _.____... --- __ ___ .._.._ _.__ . . _ _. _, -- . Descri tion SubArca I Sub cn .___ ..____.._.__ _ __.._ . .. _.._ �--.-------- ___._ _. ..._. .__..__ _ _ . __.__ . . . ;� Impervious surfaces(pavements, roofs, etc) 4.08 ac I 98.00 � (� . ._._______ ___..._---.,__.. .._.___ . .. _ __ -- _. . . . _ _....___. ._._.._ _-- -.--_._ _.----__...._. _ DC Composited CN (AMC 2) I 98.00 ,. _ ,. __.__.... . _ ._. _ .__. _ ___. _ . .. ._ . _ .__.. _... . _ .__._ .._ ..___ ._.._. _...___._._...__. ..._, _...._, . .. _.._. __ _ _ .y ._. __ . . __ ._ . _ _ _ _ _. _ __ _.. _ .. __ . . ._ _._ �i llirectl Connected I C Calc � � � _. . . .. . . _ . . _ _ _ ___. _ _ . . _ . _ __ -- ._.. _..... ._ `; 1'ypc ' Description I Length � Slopc i Coeff � Misc � TT . _ .__ __ . .. ...� . _ _.. ....:. _ .._ ..._ . __. ._ - - -. __ __._ . , � . _C �i����X�a ; ��.00 �n�n � .__ _ ._ .. ._ �_ ___-- — ... .__ __._._ _.---- _ ; ___ _ . _ _ ._ � ._ -1 �� Directly Connected TC 1 6 OOmin � Licensed to: Barghausen Engineers Appended on: 10:08:53 Monday,June 22, 2009 LPOOLCOMPUTE [pond] SUMMARY using Puls Start of live storage: 11.5000 fl I r. __ _---- ..__ _--_ - --- _ . _ -----. __ - -- ._ -- - - --. __.__._..___ I Event IMatch Q (efs)�Peak Q (cfs)f Peak Stg (ft)� Vol (cfl ,Vol (acft)�Time to Empty _ _____- -- - -- -_.. _ I 2 year � 0.1889 � 0.1885 _ � 14.7700 _(17579.53 � �0.4036 __I . 93.33-- --- �-10-year � ----0.7956 -._j -.-0.5555 _.�~I--- 15.5832 (21951.22 r 0.5039--��---�-25.67y� .__ __ ___.---._._ ._ __...- (100 year I 1.3159 ' 1.3102 15.8840 23568.63 0.5411 25.83 .. , __._vw_.�_.____._...,.r_.___....__._M_.___..._.�.r�___._....._..._ ,.._._...__:...______ ..____._..:. _.�._.._..�. .__.w_._.....___._._. ... ,_ � ' 2 year Hydrograph Plot ' � ; ' : ' : : � : ; 1�' B 1318�d�Y � ; , , ; . . � ; ; � (3 B 2,year out ', ; , . , , , . , . � . , , , : , � , , , , ` '� --� , . ..�. .._� ._. _.,_ ..�_ � _�- - -- ----- -. . . ;-- - -- --;� V . � � �.. . . � � �� � E � , ' , , , � ' ' , , ' , [ 5 ; , , ; ; , ' ; I " p , , � , � ' f� O M A O M M O M h O 0") A O M t+ O M M G M ti O t'� f� O M f� G '� � � O 00 fD 4f1 Crl a- O 00 tD 4) f`'� O 00 (D �J) M r G OC? f0 Ifl Crl � O OG fD ln ' 3 � N N M ef �A (D I"� 1'� OD QY O r N N M eT U7 ID ft 1� OD O7 O N N M 'et � � � c- e- � r- � �. a- � N N N CV N N �Time in Hours I 10 year Hydrograph Plot � T.—��—r—�r--.—,--,—. � , . , . � ; , ' , ; I� a 1�1 a;ta�v , , , , � , , , , , , , , , , � , , ; , , , , , , . � , , , , , . , , , , � _.., __�. _ .�._., _.,_ ; � ._�.__�..� . � , -;--�--�_..�. ,. . � ._� ��_� yE�,rout � � ; ; ; � � : 'S8 � 2 � � � � r � U � � . F � i i i i i � ._ � � � � � i � � � � i � , � ' `� '- ' ----. _.._...�- -�. �.. _t _..r-- - -_ . _.. �--7 '�._T. _'.. ..r-'.�.- "'-- -` -'-- � � 1 � � � � , F � f ' ! � O . . . . . . . ' M t� O C7 1� O M M1 O M �� O Cr'i r� O M t.. O f�"i 1� O M t� O f�'i M O t"i Y� G - 00 (D �Ti M .- G t0 fD �fi f'"i G OD (O Vl C�? O � iD V7 (�"i O OD fD �!i M a- G O !- CV 0� V tfi �A ttr r.. 06 CTi O O fV M � U'7 U� (L I+ N Qi O O N M V' Ui � � e- r- r e- � r � r N SV N CV C`1 N N t Time ir�Hour,: �._.____ .:_..._..�_._..w._..�._.._�._....---.___._._.._�....._._..._..___.__.__._._.___._.__.._.__.._......._.___...._..�.__�..._._.__.._._.... ; 100 year Hydrograph Plot , , --- ... --- -. .. _ _. ..- -- ----- - - - -- ----- -- --- -- - - - � 4 � � � ' ' � � � � r �1�18�deY � � � , , � � , � , ...�._�4_..1._..J__�_..�.._� .. ... .�..�i _..l_� J�_-��.. t� .- � � �- - - - � �1 t��}qedr;OUk 1 .� 3 � � --• -- � - � - � -- � � ; - - , - - - U •r . .�...,, . � .� � :� � r i � ' � � � . . � ' . _ _ ' � . , i i � 2 . � � � � ; ; � � , . , , . , o , , , � . � � : , - - -- -- - - - - - - - f � 1 ----, •- - f - , ; , ; ' f � , � � � � � ,� . , � � r. o cY, r. o cr, r� o r� ti o c+� n� o �+-> w o c�^� n o c� r. o cr, i. o c'+ �. o r� II cn �n c+-, o or� cn �ri c� .- o ao ca �n c�-i r- o ao co u, r, .- o m � u� c, �- o m ! O � N C�7 V R �A tD h� OD � O1 O � N th �7 �t �A (D f� OD O1 � O � N O'i ef 'R r � < < � r- e- � c- �- r � N N N CV N N � Time In Hours f E Running P:\\13000s111318211engineeringllstormshedllpond Report.pgm on Monday, Junc 22, 2009 Summary Report of all Detention Pond Data I' ;� F.vent 1Prccip (in)� � , �6 month i1.28U0 __. __... ... __ _.._ .. ._ ;2 year j2.0000 , _ _ _I �l 0 year i2.9000 I � _._.._ _ _ �25 year �3.4000 � , _— --.., . .____ ._�. .._ �100 year I3.9000 .�__ __ __... .____ __. ..., BASLIST2 [13182dev] Using [TYPEIA] As [2 year] [13182dev] Using [TYP�1 A] As [10 year] [13182dev] Using [TYPE 1 A] As (100 year] [13182pre] Using [TYPElA] As [2 year] [13 l 82dev] Using [TYPE 1 A] As [2 year] [13182pre] Usin� [TYPEIA] As [10 year] [13182dev) Using [TYPE1 A] As [10 year] [13182pre] Using [TYPElA] As [100 year] (13182dev] Using [1'YPE 1 A] As [100 year] I,S'I'ENI) _ _ _. , ._ . _ ; � Pcak Q ; 1'eak 'I' ! 1'calc Vol (ac- ( Arca i ' ; 13asinIl) Lvent (cfs) � (hrs) i c� , (ac) iMethod/Loss IRaintype �_ . . . . _ _ __.. ..._ �___. -- ... _.._ _ .._ _ .. _-._ _f . ___ . .____....... _.._.. `13182dev I 2 year I 1.9778 � 8.00 I 0.6688 � 4.80 i SBUH/SCS �TYPElA _ ._ _ ..----_... �13182dev�10 year � 2.9985 � 8.00 � 1.0209 I 4.80 � SBUH/SCS (TYPCIA __ .._ _.__ __ ..____.__ _. -- - r - -- __. _ . . -- ---- - - �13182dev 100 ( 4.1308 8.00 1.4156 � 4.80 SBUH/SCS �TYPEIA . .____ __ _ _ _ . _ .__._i,._ __ __ ____r__.____ _ _ _ � ! year I _ _ _ . . __ _ _ _. _. _� _ �13182pre � 2 year 0.3778 9.00 0.3396 4.80 � SBUH/SCS TYPEIA , _ .. __. _.. . . _ . _. � . _ . _ . F13182dev� 2 year � 1.9778 I 8.00 ( 0.6688 � 4.80 � SBUH/SCS �TYPEIA � ._.f .. ... .�.. _.. - -•--._._..�__ _._.. ..- ---�- -_____. _.. ._.__.I .._. .___...r_..�... ..._.�.__ .___ I13182pre E 10 year � 0.7956 I 8.67 � 0.6308 i 4.80 � SBUH/SCS �TYPElA _ . . ._.._ _._. . _ . ,__ _ .._.. _._ _... . ___ - � ---� ...- - - i13182dev� 10 year 2.9985 8.00 � 1.0209 � 4.80 � SBUH/SCS TYPElA , ._ .i _. __, ._,._ ---. . .. .__ _--.__...__ ._ . _. I. -- .. ._ ._.._ ..._....._..�..._ ...._ _ ..._._... �13182pre � y�a � 1.3159 � 8.67 � 0.9824 , 4.80 I SBUH/SCS ITYPE]A 1 �----_-_._--r----__�_, ..__. .�.__...-- _- _ _ __-_ -r---_-- --.._.�_...i._..- ---- --- 3182dev� Y�� � 4.1308 I ' 8.00 � 1.4156 � 4.80 I SBUH/SCS �TYPE 1 A IiASLIST (TYPEIA] AS [2 year] llETAILED [13182dev] [13182pre] LS1'ENll Record Id: 13182dev ____ __ . __ .__ . _ __.___ .. _ ._ _.. _ ._ ___ _ _._ _. _.. _.. _ _ ,Design Method I SBUH Rainfall type I TYPElA _ ._...___ _---._.__...__._.....___.___ .,---._._ _ _ ____ _ ___._ ___ ----.._.___._ ____-,-----.. __ . ._.._---� . ;Hyd Intv 10.00 min Peaking Factor 484.00 ! ___ ___. ..___..._._, _.__._ _ .--- - _ __..__ _.. ._._.____..__ _.j_ _ _ __...--.--___.__ i � �Abstraction Coeff � 0.20 �.-__ _. __ . ._. ..,. ,.._ __.__. .._...,_.. ____ . ... .. .._ __ � _ --- ___ _- .. _ _ __. _.----__.._... . ;Pcrvious Area i 0.72 ac �DCIA � 4.08 ac , ; _ . _. ._ _. ._.. , _ _ __._. _ . .�.. _ _ ..._. . _ _ .. . .. _. _._ �Yervious CN i 90.00 �DC CN � 98.00 . _ . . __ --- ..� .. --- - � Ycrvious '1'C � 6.00 min !DC '1'C I 6.00 min , _ _ _ . . _ . __ ._ __. . _ . __ . .___ .. . _._. ._ _ _. _ _. -- - --. _.___. _. _. ------ _ _.._ `� Pervious CN Catc ;� _. . . . _.._... .- -- ---- _------ ---__ . -- ._._ . ._..._. ._..___ _ --- _ ---- _....._____, . _._. _ ___.... �� llescription ` SubArea ; Sub cn I i --�-- ------- _ ___ .____. _.. __.. _. . __ . . _.__-- ----.. --- ------._._._..___ _ __ _ ...... - - �� Open spaces, lawns,parks (>75% grass) � 0.72 ac � 90.00 _ _ _ _ _ . . _ _ _ .. ;� Pervious Composited CN (AMC 2) I 90.00 __ __ _ _ _ _ _ . _ _ _._ ( . . .. __._. _. ... _ _. _ . . .__. . _ .__ . _._ . . _ . _ _. . . _�__ ._ . _...--- ....__. _. .. _ __...___ _._..._ ...___i ;� Pervious 'TC Calc . _ . ._ ,. . ... _. _._ --- - -__ _ _ - -- _ _ . _ . _.. .__ Typc ; llescription Length Slope Coeff' Misc T'I' � _ _ _ __ _ _ _. ;iI�ixed ; i �6.00 inin � E� _ .. ... . ._.. .. . . . . . . .._ ._ . . ._.. . . . . _ ,_ ... . .. . _ _. .._. . ... Pervious TC 1 6 00 inin __. _ ._.. ._ .__ _ __..____.._____�..__.___. ._. _ _. _ .--- �_ .__.._. __- --- -----_ ______.__ _ __ .__. j Directly Connected CN Calc ; _ . . _. ._ ___ .._ _ __ ___ . _ -- -_ __. __- -- _ _._. _ Description ; SubArca � Sub cn ;.. . � _ ___ ..._. _ . _ . _. ._ _ . _ _ _ _.. .... _,__ ... _ .. _ _ _ !� Impervious surfaces (pavements, roofs, etc) 4.08 ac 98.00 ,,--.__ ____---___-.--__.._.__ _.___ _._... ... . _ __. _.._ .__ _. _._..___. ._.._..._.�_ .. . ._... .. �� DC Composited CN (AMC 2) � 98.00� � --- ___.. _._... - - ._. . . _ __ _ ._.._ _ _._._ __ _ . _ _._- _. --- - -__ . . . . _ ,�. _._ . __ _ _ _ _.. _ _. . __ . _ __. _. ._._--... ._. ___ _..__. . . _i Dircctly Connectcd 7'C Calc � _. . _. . . __. . . _.. _. __ . ._ . .. . i--�-- �- ,-- - - - - -.� I'I Type � Description i Length I Slope i Coeff I Misc � TT ( --- --- � _ . _ _. --- � ._. �. -- - --. . _ __ . _ _ _. _ �_.._ _ .. . . __ _ -� ��Fixed � ` 6.00 min i i -- --- _ _. ._ . _ _ _ _.._ ..._--- ---- - -__. .._ __— -- ---- _ _ .._ Directl Connected TC � 6.00min (.y_ __. . _ .__..... � _.�_ ..�____.y__---__.._ __._. _._.___._. . -- 12ccord Id: 13182pre _.- - - --- --- _ - -- --._ . _ .--- _--- __ __ _ ..___ — -- _ _- - . .------ ,Design Method � SBUH IRainfall type � TYPElA --. _ ._ . _ __ _._ _ _ . _ _ _. _ _ . IHyd Intv , 10.00 min IPeaking Factor I 484.00 'i ..__ .--- __ . __._.—.. _.----. _. ..-- --- __ . ._ - ----- -__- _ _ __. -- -_._ __ _._ _ ---- j � Abstraction Coeff � 0.20 _ _ _.. _ ..__ . _._ _--- —_ .- - --. ___.____....._.. _ ..__- ----�- ------- - - �Ycrvious Area � 4.80 ac �DCIA 0.00 ac � ;.. ...._____ _ _ _ _._.___.... _... .. _. ---__._.---_ _ .. ._. ______ .... ______._ .__.__...__._w .._ .. .. __.__.. ;1'crvious CN � 86.00 ,DC CN � 0.00 _.. .. . _ . .... ._..__ _ . ..._ _..... - --- - _ _ - - -___ ._ .. .._ __.. ... . ._ . _ ___ _ ,._._._ __..._ - ---- �Ycrvious 7'C j 80.53 min �DC TC � 0.00 min _ _ _._ __.. _. .. .. . __ . . . _ _ __ ._.. _ - -- _ _ .: - . _ ..__. .__,.. __ .._ —. ._..�. . _._ _.___ _-- - ___ . .. .- --_..__.___ ..___. .. ; Pervious CN Calc � - __. _ _--- -. __ .....- ----. ._ _ _ ---- --------- --- ._. ----- _ ___ -- ---_.._ _.. -- � - -- ( Description � SubArea � Sub cn I --_ __ .,._. __ ._ _. _. __. _ ._...._ _._ _.-- -. --. _ .__ . _.____:,.— .._ --- -� , � Golf crse/cemeteriesnuidscaping (>75% grass) I 4.80 ac 1 86.00 - -. _ _. . __---- _ _.._. _ _ ...__ _.__ _ . _ -- .. _. _ ._. _.__ __. _ _ � Pervious Composited CN (AMC 2) � 86.00 ,_ _ _ _. __ _ .. _ _ ____. _. ---. _ _. . _. . ....._ _ . _ . .__ ..__ ____ . _ ____ . . ---._ . .__ . _. ___ __ ._.__ _.._ . __. _ __ _ _ _ _ -- __ _... ___ ,_—_-----. � �i Pervious TC Calc I; _. ... _ . __ . ..._ _,. _.. _._ _..._ ___. _ _ _-- 'I'ype j 1)escription Len th Slo e Coetf Misc �T1' . � _ � � p I � :� _ _. _ ---..----_. ._ _---- . __-. __ __._ _______.._. ._. _ ___._ _ _..._�_...---- -.-- . ----_____ _. _ ��Pixed ; I �80.53 min _ _ _ . _� __ . . _ . _ _ -- ___ �s Pervious TC + 80.53 min � i _._. . .. _.. _ .__.. _ . . _. _..._-- - _.. . ___. _.._ ._ . ._.—---------- ____ _._J. I3YDLISI' SUMMARY [2 year out) [10 year out] [100 year out] LSTEND _ . _._ _ __ .. _ _ . _..... . _. _. ..___.--- . _ _ -__ , � lIydID (l'cak Q (cf's)(Peak T (hrs) �Peak Vol (ac-ft)�Cont Area (ac)( '2 ycar out � O.l 885 � 24.00 ' 0.6688 i 4.8000 � 10 year out ; 0.5555 , l 1.67 � 0.5272 � 4.8000 - .. ____ . __ ._ ___ _. .. ;1 UU year out i 1.3102 � � 9.17 � 0.9220 j 4.8000 STORLIS I' [vault] LS7'END Rccord Id: vault ----.-_ .._- - i �Descrip: Ivault IIncrement I0.10 ft �_..._...__.. __ _ . _----___ ------ -----__.. ..__._ , ..._.. �Start �1. 11.5000 ft Max El. i16.5000 i� �Length �128.0000 ft IWidth !42.0000 fl� ;Catch !l 00.0000 I ; DISCHLIST [combo] LS1'END ltecord Id: combo ... - _ .. .. . ---.. . ______ �Descrip: combo IIncrement 0.10 ft � --- --._. _ _ _.. _ - _. _...--- . ....__ iStart �1. �11.5000 ft �Max El. �16.5000 ft � � --�- - -- -------_.. .___.._ __---..__ _ __ . __. _ ; !List of Discharge Structures: lorifices , weir Record Id: orifices _ _ .. _ . _. .. . _ . . --- —. _ . - ;Uescrip: ion�fi�es-� Inerement �0.10 ft --- � iStart I;1. �A�11.5000 fl�Max El.� 1 �'16.SU00 ft� 'Orif Coeff �f0.5�r ILowest Orif�1. �9.50 � : - - - , — -- --- _ _ .. . . _ 'I.owest Diar�9 0 IDist to next �0.0000 ft � ltecord Id: weir - -- .---- - -- -.. _ - ---- ---- - .____ ._. _..___,____ _.---- -; �Descrip: ' Increment �0.10 ft _.._ .. _ _. _ ..----- -�_.._ . - _ __---__.__ --- _. ;Start ' . �14.850 Max El. 16.5000 ft - --_ _ __ - -_ ..._I____ �. ___ ----- ,.___ �._ . _ _ _ ....._.___.______.__ ,�. ;Length f 0.28 ft ---- . __... . ... .. . _._ _. ---_ _ __ _ _ _. __._ ;Cd �3.13d0 �Use variable Cd based on head for calcs� Licensed to: I3arghausen l:nbineers Appended on: 10:09:35 Monday,June 22, 2009 Record Id: vault � _ . .--_. _ - - --_ _�_.._-- ---.._- Descrip: �vault �Increment�0.10 ft . . _ __ .. __ .__ ._ . _ _. Start El. 11.5000 ft jMax El. (16.5000 ft _ _ . .. ____ _ . �Length I128.0000 ft IWidth j42.0000 ft; _ --�..------ --. -• - - -- --- - --- � �Catch I100.0000 � . _ _...._ _ .____.__-_..._ __..._____... ...� _ _._._ ._._ . . ._.- --..._.__--- -.__.._._. .__.__ __.,- ---__, ! Stage Storage Rating Curve � �11.5000�ft� 0.0000 cf �14 1000 ft�13977 6000 cf� � _ _ _.---_ __._. ----- --- ;11.6000 ft� 537.6000 cf j 14.2000 ft I]4515.2000 cf �11.7000 ft 1075.2000 cf 14.3000 ft 15052.8000 cf � --- . . � .. _ _.__ _ - _____._._._.. -----_. _.. _._ _ ;11.8000 ft ]612.8000 cf (14.4000 fl l 5590.4000 cf� I -. �-- _. _- `l 1.9000 fl 2150.4000 cf !14.5000 ft I16128.0000 cf; ,12.0000 ft� 2688.0000 cf �14.6000 ft j l 6665.6000 cf° 12.l 00U ft j 3225.6000 cf ;14.7000 ft�17203.2000 cf i !12.2000 ft; 3763.2000 cf �14.8000 ft�17740.8000 cf _ .-.-.-- . __ .-- ;12.3000 ft i 4300.8000 cf �14.9000 fr�18278.4000 cf - --. .-----. .___.._._ __ ___. __._..__._.----____ ....__ ,. _. .._ ._. '12.4000 ft� 4838.4000 cf (15.0000 ft�18816.0000 cf _ .�_._. . . .... .. _. ;12.5000 ft� 5376.0000 cf �15.1000 ft 119353.6000 cf _ ___._ _-- - -- --._ . ...___- - ---�-_. . _. . _ ... �12.6000 ft� 5913.6000 cf I15.2000 ft�19891.2000 cf '�, _ �12.7000 ft � 6451.2000 cf 15.3000 ft�20428.8U00 cf !, j 12.8000 ft I 6988.8000 cf I 15.4000 ft�209b6.4000 cf �I, �12.9000 ft I 7526.4000 cf �15.5000 ft�21504.0000 cf , .. _..___ _ __. . _ _. . �13.00OU ft 8064.0000 cf �15 6000 ft�22041.6000 cf� __ ----- ;13.1000 ft( 8601.6000 cf �15.7000 ft�22579.2000 cf ', - .... _ ._ __. _ _ i 13.2000 ft 9139.2000 cf �15.8000 ft 23116.8000 cf �_ _ . r__ _ � .__...._.r...._. __ _._.. ..... ._.,___.__ .___ . _ �13.3000 ft� 9676.8000 cf j l 5 9000 ft�23b54.4000 cf I , _ ._._. _ --.---. ____._. ,_____. ..__.�._. .. i l 3.4000 ft(10214.4000 cf I 16.OU00 ft r24192.0000 cf. , � ___ _ _ __. . . � `l 3.5000 ft�10752.0000 cf�l 6.1000 ft�24729.CU00 cf i I ;13.6000 ft�11289.60UU cf'16.2000 ft j25267.2000 cf� �i ;13.7000 ft I11827.2000 cf�16.3000 ft j25804.800U cf�� ;13.80U0 ft�l 2364.5000 cf i 16.4000 ft�2b342.4000 cf; , ..._ _ ..__ ___ .__ _ ._ . _... . _ . ;13.9000 ft�129U2.4000 cf 16.5000 ft I26880.0000 cf � ! �.. _� . _.. - - _ _. _ .. . _ _._ . __.__ _._..... - ----- . ...__.._._._._. �]4.0000 f��13440.0000 cf�l 6.6000 ft�27417.6000 cf - - - � Licensed to: Barghausen Engineers Appcnded on: 10:10:10 Monday,June 22, 2U09 12ecord Id: combo _ _ _ ___ -- - -- - _-- - �Descrip: �combo IIncrement O.10 ft ,- #Start El. �11.5000 fi �Max El, �16.5000 ft 'I.ist of Discharge Structures: (orifices � weir Record Id: orifices _ _ ___ _ _ 1 _ _ ___ . - - __ _ _ ., ;Descrip: Iorifices ;Increment �0.10 ft �, . .__ _ �Start El. I11.5000 ft�Max El. �16.5000 ft�. ---. . ._ ...._ __ _ _. .. _. ._- - ;Orif Coeff (0.62 �Lowest Orif EL '9.50 ; �Lowest Diam �1.9600 in +Dist to nexi ;0.0000 ft � Record Id: weir , _.. _ _ _ _ .__ ___._--- .--_ __...._ __ _ _. _ Descrip: jweir IIncrement �0.10 ft . _ ._ _ _ _ _ _ _.,.___ _ __ . - -- �Start El. �14.8500 ft(Max El. �16.5000 ft . _ _ . . �Length �0.28 ft a �Cd �3.l 300 �Use variable Cd based on head for catcs i _ ; ; Stagc Dischnrge Rating Curvc � . ; '11.SOOU ft �O.00UO cfs 14.1000 ft j0.1681 cfs� ;11.6000 ft jU.0330 cfs:14.2000 fl�0.1713 cfs t _ . _ . __. ...--- _ - -._ . ( �11.7000 ft I0.0466 cfs�14.3000 ft�0.1744 cfs, __, __-- . .-- --.._. �1 l.8000 ft�0.0571 cfs j14.4000 ft(0.1775 cfs i --- _._ __ , ..__..,. __ . _ (11.9000 ft 0.0659 cfs!14.5000 ft 0.1806 cfs, 312.0000 ft �0.0737 cfs;14.6000 ft�0.1836 cfs' � �12.1000 ft�0.0808 cfs�14.7000 ft�0.1865 cfs; ., ._ ;12.2000 ft j0.0872 cfs�14.8000 ft j0.1894 cfs; ;12.3000 ft�0.0932 cfs�14.9000 ft r0.2020 cfs ; _ _ _. . ._ � !12.4000 ft�0.0989 cfs !15.0000 ft�0.2420 cfs ;_ _ __._ _. _ _ ._ __ ._. _. ;12.5000 ft�0.1042 cfs �15.1000 ft 10.2910 cfs; . . � __ __ _i - _ _ -- _ . _ _.. ;12.6000 ft�0.1093 cfs}15.2000 ft I0.3418 cfs , _ �12.7000 ft�0.l 142 cfs�15.3000 ft�0.0000 cfs '12.8000 ft�0.1189 cfs±15.4000 ft,0.0000 cfs �12.9000 fl�0.1233 cfs'l 5.5000 ft�0.0000 cfs j ; - - --- -__,_.. ;13.0000 ft 0.1277 cfs 15.6000 ft 0.6678 cfs� - -- � i C ___. . . _ .._ _____ --- �13.1000 ft�0.1319 cfs f 15.7000 ft r0 9594 cfs( _._.. .._ _._ . --- _. �13.2000 ft j0.]359 cfs(15.8000 ft I1.1669 cfs� , . ----� . .. _ i �13.3000 ft 0.1399 cfs 15.9000 ft 1.3374 cfs --._. (. .__ . �___.__. _. 1 __.. __ . ._� _.._ _ _ _._.._ . ._._ _. . _ .. ;l 3.4000 ft(0.1437 cfs�16.0000 ft�1.4857 cfs '13.5000 ft�0.1474 cfs�16.1000 ft(1.6188 cfs� �l 3.6000 ft�0.1511 cfs�16.2Q00 ft I 1.7407 cfs I :13.7000 ft�0.1546 cfs�16.3000 ft�1.8538 cfs �13.8000 ft 0.1581 cfs!16.4000 ft 1.9598 cfs! � � � _ _. _.� _ _. . __ _ - ;13.90Q0 fl;0.1615 cfs�16.5000 ft 12.0599 cfs i . , .._ ..- --� ;14.0000 ft j0.1648 cfs;16.6000 ft f 2.1550 cfs . _ . _. _ _ ._._ ._ _. � �16.5000 ft+2.0599 cfs� Licensed to: �3arghausen �ngineers EXHIBIT D DETENTION AND WATER QUALITY SIZING COMPARISONS DETENTION AND WATER QUALITY SIZING COMPARISONS Summary of Data Used in Calculations: Soils—Woodinville Silt Loam, Type D, CN = 86 Pre Post-Developed CN— Impervious = 98 Grass = 90 Precipitation P� = 2 inches Pio = 2.9 inches P,� = 3.9 inches Times of concentration were matched for both sets of calculations. 1995 Detention Volume Required = 22,519.2 CF 2009 Detention Volume Provided = 24,192 CF 1995 Wet Pond Volume Required = 6,970 CF 2009 Wet Vault Volume Provided = 2],504 CF �3�sz.00H.ao� EXHIBIT E TECHNICAL INFORMATION REPORT FOR THE EXISTING SITE DATED JUNE 26, 1995 ;+ ; r F +. :.;•,:'•,;:,:�. :: �,.:>-... .a;:,;:`';x;:•.�:;:i•ii"•:�i� ::/f.:.<.'2•..:..:: ............::..::.:r t .. � � � •.;,n..;..,-+::>':=?i',.'•t.':[ii[:xt'< ...:- � .:, ,,: :. .,, ,�:: ..�; ' �s � -�.. � :. .. ;: .;.. ,�: . .�. `: �-: '>:. ., _ .. :�.�. '::�r . ... ....�. . ... ��� .:.: "��C}�1����� MN1=fl��11AT�C?!� ���3��' ' ��DR ' � 51111URFI�' M�4�`ERI�LS '���t3'1J�R''� ��1�IL�T'1f ,i ; ; : R���'CJI�, �1T������T�f� ;; : : :::.: . ;. . :::<:::::::°::.:; , `' < : ': ` ■ � OUR JOB NO. 5457 JUNE 26, 1995 Prepared By: BARGHAUSEN CONSULTING ENGINEERS, INC. 1 S21 5 72ND AVENUE SOUTH �`��,►C.8 M KENT, WASHINGTON 98032 P �� ` (206) 251-6222 . �� �. . ��,Hav ssi��° 21�� mP � EXPIRES � q� � CIVIL ENGINEERING, LAND PLANNfNG, SURVEYING, CES ���� r' , TABLE OF CONTENTS � , I. PROJECT OVERVIEW A. GeneralInformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. T'IR Work sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. Site Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II. PRELIMINARY CONDITION SiJMMARY III. OFF SITE ANALYSIS a. Upstream Drainage Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b. Downstream Drainage Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV. RETENTION/DETENTION ANALYSIS AND DFSIGN a. Exisdng Site Hydrology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b. Developed Site Hydrology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . �� c. Hydraulic Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . � __ d. Retenpon/Detention System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V. CONVEYANCE SYSTEM DESIGN AND ANALYSIS Vl. SPECIAL �tEPORT AND STUDY - VII. BASIN AND COM11N�'ITY PLAN AREAS VII�. OTHER PERMITS 1X. EROSIUN/SEDIMENTATION CONTROL DESIGN - X. ADDITIONAL DOCUMENTS a. Bond Quantiry Worksheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . b. RetentionlDetention Facility Summary Sheet and Sketch . . . . . . . . . . . . . . c. Declaration of Covenant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XI. MAINTENANCE AND OPERATION MANUAL � .� • - • , , , . � � a � 0 H U � O a a � Page 1 oi 2 Ktng County Bulldln� and Land Development Dlvlsion , TECHNICAL INFORMATION REPORT (TIR) WORKSHEET • • . � • . • � • . � � � • Pro�ect Owner Smurf it Recvcling Company Project Name Address 9747 Martin Luther King Way Sout Location Phone (206) 723-4490 Township Pro}ect Engineer Daniel K. Balmelli Range � Com n Barghausen Consulting Engineers Section � y Project Size AC Address Phone 18215 72nd Avenue South Upstream Drainage Basin Size AC Ke Wa 8 2 206 251-6222 � , . . i � • Q Subdivision Q DOF/G HPA � Shoreline Management �] Shori Subdivisior � COE 404 � Rodcery � Grading � DOE Dam Safety � Struciural Vaults � Commercial � FEMA Floodplain � Oiher , [J Other � COE Wetlands � HPA . � � - Community , Green River Drainage B i ��ack River/Springbrook' . , .,, � River �J Floodplain '' [� Stream S�,ringbrook Creek � Weilands � Critical Stream Reach Q SeepsJSprings L� Depressions/Swales � . Q HighGroundwaterTable � Lake Q Groundwater Recharge l� Steep Slopes � Other � Lalceside/Erosion Hazard • Soil Type Slopes . Erosion Potential Erosive Velocities . Woodinville 0.5� Low I. � � Addilional Sheets Attatched . l�gp King County Building and Land Development Divislon TECHNICAL INFORMATtON REPORT (TIR) WORKSHEET � � • • � • . , REFERENCE LIMITATIOWSITE CONSTRAINT � Ch.4-DownstreamAna sis � 0 _ 0 � � , 0 � AdditionalSheelsAttatched � . , . � MINIMUM ESC REQUIREMENTS MINIMUM ESC RE�UIREMENTS DURING CONS7RUCTION FOLLOWING CONSTRUCTION � Sedimentation Facilities � Stabilize Exposed Suriaoe 0 Stabilized Canstruction Entrance O Remove and Restore Temporary ESC Facilities � Perimeter Runoff Control �x Clean and Remove All Silt and Debris � � Clearing and Grading Restrictions � Ensure Operaiion of Permanent Facilities , � Cover Practices � Flag Limits of NGPES �Jx Construciion Sequence 0 Oiher � Other � , . � Grass Lined Channe! � Tank 0 tnfiliration Method of Analysis 0 Pipe System 0 Vauli � Depression S.B.U.H. � Open Channel � Energy Dissapaior � Flow Dispersal CompensationlAAitigation O Dry Pond � Wetland O Waiver of Eliminated Site Storage � WeYPond � Stream � Regional Deteniion '� Brisf Description of System Operation Storm water contained in 3 cell wet/detention D��_ ' discharging to biofiltration swale. Facility Related Site Limitations Q Additional Sheets Attaiched Reterence Fadlity UmitaUon , . � Q Drainage Easement � Cast in Place Vault C1 u�ner � Access Easement � Retaining Wall � Native Growth Protection Easemeni I� Aockery>4'High Q Tract � (� Structural on Steep Slope � Other • • • � � I or e ctvil engineer under my supervision have visited the sita. ActueJ site conditions as ob�erved were incorporated into this worksheet and the � ariatchments. To the best oi my knowledge the lniormation provided here is eccurate. Sb w• • I/90 I. INTRODUCTION/GENERAL INFORMATION The proposed project lies within Section 25, Township 23 North, Range 5 East, W.M., City of Renton, King County, Washington. The site is located in an area of Light Industrial and Commercial development. The project enco�mpasses approximately 4.8 acres and is currently undeveloped. The site is vegetated with grasses and is relatively flat with the surface elevadon ranging from elevation 15.6 to 16.3. The site is bounded by S.W. 34th Street to the north, a railroad track easement and the existing building to the south, a wazehouse building and distribution center to the east, and a Springbrook greenbeh and pedestrian easemevt wluch contains a drainage channel to the west. Followuig the development, the proposed storm drainage runoff will be collected and conveyed by a tighdine system to a water quality weddetention pond which will be located at the southeast corner of the project and will be discharging to a grassline swale prior to discharging off site w Springbrook Creek. The deteution/water quality system will be designed in accordance with the 1993 County Surface Water Design Manual. There is no upstream flow onto the site. Please refer to drainage area map in Section V of this report for additional information and drainage flow locations. 5457.004 [AS/ca/ps] ; CoxE Rr,�v��av�rs 1. All surface drainage will co�e to discharge into its nawral location (Springbrook Creek)following develapment. 2. No downstream drainage analysis is required for tlus project since flows discharge direcdy into Springbrook CreEk and other core requirements have been met. 3. Runoff cornrol and water quality improvements have been designed per KCSWDM (see Secdon IV, this report). 4. Conveyance system has been designed per KCSWDM (see Section V, this report). 5. Erosion/sedime�ation plans and calcularions have been submitted to the City of Renton as a separate submittal package. l 5457.005 ; ; ; � ; SrF.ciai.Rr.Q � � s 1. Proposed project does not lie within a critical drainage area. 2. Project dces not require a master drainage plan. 3. Same as Note 2. 4. Project does noi lie within an adapted basin or community plan as designated by KCDDES. 5. Water qualiry has been provided on site by water quality swale and wet pond to meet special requirements and core requirements. 6. Oil/water separator not required. 7. Project will not discharge to a closed depression. 8. Project will not use lakes, wedands, or closed depressions for peak rate runoff control. 9. The project dces not lie within the 100-year floodplain. 10. Same as Note 9. I1. Geotechnical report is being prepared. Not available at this time. 12. King County soils survey informadon provided in Secdon II of this report. 5457.005 FF � � ..... <I QI�� I ': Y^>I ^ \ COURSf . . ,t� � �� � 7J �))�I�IS � . -y—^�. '� � y.. �� �]' TI/ ( .i .. \ a'� ST � .� � a� •�. \ 't . Y�'i I � �Il�re��un��; � I �7 ' I �� \ ., y� � " r`r � <+ � ,� , j � i•;� , � �� � , ` , � 1Y� -- I _ s '„n �ro .� , ,I r I apY ��„ �_ �S' � �� ' �.Etr.i ra i , ; . `.� *� .�� I � ' �j CiR s�s - . il . i �f. y ,. ,�..'1' ���� rr�o£nr, J r � . � d .• �� I • f 1^iM YI� 1'�\ T Z�v . �,�MK\, ;�� I,, i l 1�tM S�~ , i NtrlT6M vILI�GE VL �'t .TF". 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PRELIlVIINARY CONDITION SLIMMARY � , __� . . �� ,� CITY U�' REN'�ON � a� l�:ul Ciymer.Mayor —��-• � Cj �j� � � I ?"' �'`'�, i ��M V�Ar� , ��� � ► ��� � f��y� �viEw nord�a, i�ss r �ffi� �5��55 1 ��W,n�S 1�on• Mr.Jadc Ho��eran ��1� �� A � tioikrar►Duitsman Architeds,lnc. � . /'��, • ���N� 1�.SG Elbrldpe Payne RWC, Sulte 202 J� 3t.Louis�Missouri 63017 M•1li1�' I 5U8JECT: Smurflt Materials Recovory Fscilit�r/Administrstive fate Plan � PrOjeCl No.LUA-9S-033,SA,SM,EGF Gear Mr.Holieran: This lall� i�writlen on behsif of the �ite F'lan Rcvicw Commltia� u+d ic to fnform you that they have cr�m�fleled their roview of tha Request for Reconsideratic►n received on i11e ACminisiraUve Slte Plan for the atx�ve-���erenced projed. t ne Commmee. 011 ApMI �8,1l36, i�.wrd a rovised Condiiion No. 1. A reviscd Environmental Rovivw t Administrativa La�d Use Aclion RepoK�S onGosed reflectinp tha revised Conditlon. The 14 day eppeal yaiiod for this project will end et 5:00 PM on May 6, 1996. Followinp this, the CHy wil! flnalize hc peterminetion unless commeMs recefvwi raquire a rR.Rvafuatlon. Appeal proCeCures imposeC Dy t�e Glty of ReMuri� Slte Plen Rev�ew Commltlee are avallaGie ul tl�e DevelopmeM 6enricea Oivision, Third Fbor, MuMcipal BuildinQ, ReMon,Washlnpton 98066. Phone: 295-2550. You should De prepan+cf tn make specific facival OCJeAans. If you have anr questlona o�desl�e clarfflcetio�of tne above,please cail me ot 277-5586. ro�the Slte Piet1 Revlew Commtttee, ���A���� � Mark R.� ICP Projed M� aper CC: Runninp B�ar, Inc.lOwner PeRies of ReCCf'd: Mr.Qoug Arne�r�/Ari�sDer�Investment; � Mr.Jahn Lanp/6abcY CorporaUon � _ ` % / i � 7 � � /�' � C- C r ���/ L, �.`�'� C-'_ ( �, IN�ISLTR2�OC ' � 200 Mill Avenue South- Kenton, Wa�hingion 98055 � T1�M O�Osf OWMMM SPk nc�ql0 RI�YMI,YLti pw�cauunMn i . , �c►+eo�o�o o�u' --- -�..�.-.:::� Cb W Ra1bn P/B�PW Gpnbn�nt En�aM�l D�tNn�F►ai�cn�AdnENWaM L�nd Ur Aebn iMU�4�RECyCLAVO LfJA-06-0�?,8A,FCF R�PORT AAfD DEClS10N Of�Ip1I, lPa3 Pp12 d 12 i � .?'�`•� �'�'^.`�� .h�,Pi.W A� ,.'�F.�Y`� 1SI`,M?,1. 8�;�,�i,�I��e �,���'yi��,., �^ � Tht proposed d�vNopmeM is bc�ted o� Lot� of the Gt�vier Park development. Yhis site used to Indude a vMetland � O.d4 acns i� 'siz�. �M apreamerrt was r�ach�d batw��n TrilBum. the succsssor to Glade� Pai1c� and the Cthr of ReMan lhat atlowod fw the llpinp of O.�Q acres on each site. This apreemeM requiros the estsbilshmeM of a watland �butK tr{ea thst the City is in the p�cess at completinp. The 0.64 au+e wetland lhat existed on thia alt�wss tilled under a RoWne Vepet�tlon Manapament PertnR. T�iNium has caMinued !o manape the vepetation on this sil� undtr lh�a pemdt. Due!o the conAnued mana�ement of thfs iite It is wdremely unlikely that a wetiand would emar+pe on this sRe due to the human activity aasodated wlth that manapameM. The appiicant saeks Site Plsn Approval. Enviro�m�Mal Revkw and s Substantisl Devolopment P�mnit to conatn�ct a co�creia tllt•up Duildinp fcr a mata�iala rscovery iauGty. Tho sPpikant proposes to construct a 81�100 sf ncyding ceMer bulldlnp. Parkinp fo� 5a cars wIU be pmvided on-slte. Approximately 73�6 of ths sKe wip be coverod by lmp�nrfous su�face with the�emainder raservcd fo�larxlscapin� and water qualNy leatures. The 6horeline Subatantisi Developmeni PertnH ia a separate permit that will be issued aRer the complation o!tAe appeal pe�iod on the Administrative Site Ptan. .� ,.��zi�; r�1RC1 ,�4'���`.�'`'�����V� b'� ;� �°.°��:d�.�� < `�,� r�° A. Environntentsl/mpacts .. n,.P��w.a d�e,r.a.na�►a.w.a ey r.�ow ay o.oaa�►�e,m.na ewr�ro�w d.an,;►,. wr,.u►..�n. .�rc.nr as:.d.�u.nly 1drn0'�iid and�dl�sr�0�nr6�nrn�nhf ir{�cls�nEla�atad lo ocpr�fn eo�r�func�on wl�i tl�proDoaO O�wbpr►»Rt. Sn1l IirrNwM.Mw IOrnOlkd tHat fh�pvDosd ls pc�ly Io h��fh�lbfowinp poe�el�1�actr: . .� 1) Ea�th/AQstheUcs �m�eds The applicant intends to pre-ioad the project sfte. This is necessary as there is a tayer of peat under the ezistinp fili material. T�e pe�t contains a high water conteM and would be comprassed unevenly d the structurc was Duia without �re-losdin� the stte. It is anticipot�d that 1he pre-load (surcharye)wip require 23,000 cublc yards of fili. A! 24 cubic yards per truck load this would equate to 7.750 round t�ip - truck trips to impori tt�e required fill. Once the pr�-load ia no bnper required, some of the flll materiai wilt be used on-slie Dut il is anticipaied that the some of!he rrwie�isl wlll need io bo ramov�d. The applicant Ass provided a temporary erosion control plan to ensuro lhat the fl!1 material do�� not bacoms a nuisance to lhe adJacerrt prapertles and Qosa not impoCt the adjaceM sensitive areas. The �ppHcant has provided a landscape plan that provides a minimal emount ot landscapinp wfthin tt�e landscape area,required by ordi�ance. The lipht Industriai,area i� intendsd to contain a mix of �office uses, warehousinp, and manutacturinfl uses. Althou�h the proposed'1'sndscaplr�g alon� the street may be adequate in some indusirial arau, it appears to be inadequate for an ar�ea lhaf Is a iransitlon between the ottce�s rks on adjacent prope�ies and the other light tndustrial sreas thst hsve already been cortistrudsd with superior landscapinp plana. City staff recommends. as part o( the Administrative'Sne Plan approval, that the appiicant Da required ia submit a reviseQ landscap� plan ihst Is mere In keepinp with the plsns thst hava alre�dy baan approved and con�trud�d on adjaunt prcJeds. The applican!will be rernovin�ihe txistin� veye9aUon p�or to co�ttrudlon. A�I pervious su�faees will be landuaped. , MltlaeNon Measur+es: No miti8ation measura is requirad. i Pol',cv Nexus SEPA Ord(nance. Landscaping Ordinance, �ght Industria!Zoninp. S/TERC.00C c�#y or R.n1en ris�rwD�aar�nt fnMione»ntr arrnnfn,0a,i Ade�inlw�tl�tana w.A�Ma, s�a�rr,�rcrwrvo cu�t-9�o3��sA.ECF REPORT M+m D�ECJ�AON OF�pf�, !!Os P.w�a ts � A!r �Impacts to tFw air qwfay can bs ar�tfdpste0 both durin� the ca�tstnuctlon �nd dutin� !he opera of u�. iaaa�r. Impads dudnp oonstn�tlon could Indude exha� trom the ooratrudlon �ut�nont Md dust from �xpoaed so�s. E�duust tmm conitrvction vehid�s k ooverod by e�dqinQ . 8tate and Cky Codes.. The appNcaM has submlttad as p�rt of the eon�truc�lon a proposal tor • . � th�melntensnpe of th�s�10 ansuro that dwt doe�s nat becom•a nulsance on site. . � , , �. Du�irq ihi oparitlonphsse of th� proJ�ct Uars iM�•be vot�ide traffle snd hestiap �qulpmeM tor tha . . . buiidin�. •The sxtlst�frnm bath tha vehtcJ,s and th. twatlnp equipmeM wAI have a minor Impact on . alr qualtty. ,Existlnp State a�d local codes �dd�sss these impads. No.turther mltipatlon v�1tl bs raqvired � . Yh� appli�nt wiq be usinp lhis fAu1'�y to bundle paper and tlwn ship R to athe�f�ciliues to complete the necpolnp ot tha paper. It ia possi6if thal ff the pap�r becorr►es wet�t could mold or mildew whkh would cause sn odor probiem. The paper wtll bs lrucked to the faci�ty and dumped inside t�s buNdir�. The bundled paper will also be stor+ed M the lwl�dinp until � is shlppad off�le e�her by�ap or � truck. As lon� es all of the paper is stor+ed lnside the DuildinQ It ahould not b�eoma �n odor prob sm. Staff will recommend that a condition De appItad to the atte pian requirtnp that aU papsr be storod buide tt�e bulld�np to provent odor and litter problems. A m�ipation measuro Is rwt nquircd os ih�odor�nd Ittter prablerr�w111 bo addressed throuph the sEte pfan procass. M�1oeHon Msasures No rnitlp�tion mcasure ls required. See sile pian cand(tlons. �►Nexus NIA ?) Wat�t Imosets This project ls Iocated adjacent to tho SpdaQbrvok Creek. Water qualHy is a sipnitle.a�rt concem tor th�s pmJect due to ihe parlclnp sros and the proposed land use. Th• applicant hss �r�ov(ded pr+eliminary plans for a water quslitr s�rstem to addross th�s concem. The proposed tystem is sfiown on tne plans subm�tted by the applkanc. ., . TAe applicsnt wNl need to provide the fi»al ptans tor a waier Quality �y�em in accordanc� with the iqnp County Su�tace Water Design Manual ttwt has Dsen �dopted by tftie CiEy ot Ronton. The water qu�ltty system wlll p�vent contamination oi the cteek f�om this sit.. No furihe� measures�are requi�ed�t this tlme. Mlfl�etion Ms sures None required. F�J/cv Nex�� t�/A 4) Transportadon 1�� The City of Renton has �dopted a uNform ttanspor�ation impad fee for the entire city. The ordlnance states that a fee of S7S.00 per trlp en� will be assessed for each trip penerated Dy o new land use. Th�s fee wili be used tor ihe transportation lmprovements ihat are requlrod throuphout the City aa new traffic is generaled. Tha appRcani was requested at the pre-applicatton m��tinq to wbmit a small tra�c siudy with ihe fortna( apptication. A tra�c study was aot submltted by the applicant. The lTE Trip Gener�tion Manuat does not speGQcally addresa the number o�t�ips Qenented by recycling centors. In�viewing s�milar uses City staff esttm�tes that the pr+oposad land use could �enarate 4.88 t�1p e�da per 1,ODU • �jM V�rR 1 T square teet of buildinp area. This tormula Ir�dicates thst the proposed buNdin� couid Qenetata an `�,M,,� svorage of 298.t7 trip �nds per day. Therefore, 298.17 trip ends X S75.OQltrip ead equals 522,3�2.60. a IcaM do ot a �+ee ' this estimate tt�e applicant may submtt a treffic anatysts to the sa a n o e ev adjust this impec!tee. � M��r' rtro Meas�s No mitigation measures are r4quired. Polkv Nexus TrafAc Benem Zone,Transportatlon NtKlpation Fee SCt�edule, SEPA srr�c.00c cy d R.alen P�A'IN Orp�arw�t E�fd D�a.nn6uMon s AdrniYst�Or.1..n01b.�b'n � :M�tqf REcri1a� LUA-f6-0??,tA.ECF RFPOR�MI�GEGSION Of I�pAs, 1Ns Pp�I d 1� � 8. Rocomn�endatfon � . 6ased on analys�s of probabla �a ds irom the proposal. staff ncommend thst th� Respansibi� Offlctals make the toNowin�Envt�nrnaruaal Getem�irwtion: . .. . . • � � - ''� ' � '� DETERIMlNAT�OrV��F • .: . , ,... . � � • � � .' DE'f'!'RM/NATIOdV OF' ' �� �-:�� . , . . • . . ... . . �:.:' _ . .. ... . _ .. ' . .. . . . : NON-SKiJ1�f/GINt:!°-'MRIG/17ED. . ' � � -'�� ' � � tssu�DNs wltA 11 day Iippai P�r1od. . . . .. .. � . Issti,e ONS-M wfq� �5:d�y Commmt '�iod with Concurrent 1�1 day AppMl P�rbd. ' X Issus DN8 wlth 7S d�r Comm�nt P�riod wtih 1t�ut ONS-M wlth 15 day Commant P�fbd ConaR�nt 14 d�y Appwl P�rlod. tollovwd by a 1�day/lppql PKfod. c. Mm�anonr�EasuRFs: . � Nc miUpotlan mesaur�es are requi�ed for the proposed developmeM. ' . i Advisory Notes b Applkan� tM lbpowi�not�r N au�p�rrMndf 1blbr�naUon p�ovldb�n tonfwicUon w!(�tll�vlvtronn�Afs/Q�h/mbktlan, O�c�us�fAw aofr an pvoWOrd as Mflorpu�lon enly.fMY u+�nof wD�et to d�appw/protaas!ia►�nvlrorm»nh/�etasnMstlb�ns. ��' YVast�water{SanNary Sewerj: � � � . . . . . . �. �i�V�� 1. Thia sita ia sarved by an existin� 8' sewer main located In SW 34th Sircet at the NW comer of the propecty. Cost of esch wnnection (stde seweQ to the sanitary system will be 5100. OiUw�ter separator wIN be reQuind tor the floor draln syst�m. Backflow devices wi �ui� on the sanitary connoctians of tAa floor�lev�tion oi the proposed butldinp 1s less then elevatio Sewer(SUCC) fees ot 50.063lsq.ft. of pross sito troa of the propeAy wtll be roquired, if not previously pai�. 75. g� 2�. , . Wat�� 2. The sHe is served by an exlstfnp 12'waltr main bcated o�the south sida of SW 34th Street aa+ots th��Mln ��� property tr�ntaQe. New wate�maJns, ffro hydrants a�d DOCV assemblies {sprinkler systam) wlll be nqutred � 0� for fre coMrot to the proposed buiidinp and must me�t the curront Ftre Codes. New metars will be requiRd to serva the �He, ono dcmestic and one IrripatJon si�ed to, rtwet the needed roquirements. The watar system G���V inGuaing meters wUl De roqutred to be locpted in easements that witl �s City of Renton hotd. Water(SUCC) tees of i0.928/sf of gross site of the property will be reqnired, Ff aot paid previously. Oraina�r , 3. A temporary orostoNsedlmentation cantroi plan and suAace water draina�e ptan �nd analysls per KCSWM Gf V I L +��� � �quirod, Indudir�p a level one analyais for 1/4 mik down stream. 8iofiltration wil! b� roquiRd due to mo�e than 5,0000 aquare test oi n�w lmpervious suAaoa subJea to veAicul�r use. The dralnsfle�nalytls and data submitted for H.P.A.to the Department of Flaheeles,should be submitbd to tha Cily as soon as posilbl�. Surface water{SUCC)feea ot i8.148/af ot new lmp�rvious aroi ot ths property will be�uirod. 4. TAe applicant wt,ll need to provid• a FiooQ Plain I ation Ce ' pnor to obtaininp a ilnaf inspectlon (or the buildi . NoT �tAv�asd � c�p af I b�Mloe►AiB+�w o�p�uan.nc Enworrr�nta+O.r.m�naeton s am�r�Wso��hr.t.ns th.Aaron SM�IRF/t I�CI�CLA�fO LllA-�SQ4�.5�4.ECIs �oarMao aEws�av oF�r� �oas P.o.e a�z (Addittonai Notesj � 8treet Improvements: � � � . �. • , , . .. . ONNe '� T� �Daic.�nt shail provide a tiaffic mftipotion !ee equei to S7S.00 per trip end prlor to the tssuanca of a ,.,.bvllding pertntt..It la�esUmatod that the proJact wp!�ener�te apprcxlmatelY,298.17 trip erids pe�ive��week �'� ""day end ths!.1hQ mfU�eUon tee wi� be 522.3�2.60.(t75.X 2�8.1T.tMp ends �...522.362.6�. f the a Itcent � � ��+��� e � numbe�of trip ends the appticant will nsed to submlt a trsff+c ana e �atistaction of the Oeve opmertit 8onrices Dfvis�on. ' . � 8. Off-s�e concrete sidewelks sod driveways approaches will be rcquired, On-site peving of roadwayslpa�cinp -G�v��, ar+eas are required snd mual meet cumeM CRy of ReMon Codes/Standar+ds. Canstrucllon permit toos wNl be required for construdlon of wster wsy mains, stde sewer� slorm dralnafle system. sfdewalks, dtiveways and Pavi�B• Fir+s ' _ . . . . 7. Pr�eliminary fMe naw�equired is 4.250 gpm. Five hydreitts sro requirod. One flre hydrant ts required wtthin •F'�� 150-teet of the proposed structure, and four flre Aydrartits are requ(rQd wlthin 300-feet of the Stnrdure. A ��� looped water mein Is reQuired io be Installed sround il�e bulldlnp. .�VM e 8. Flre mitlgation tees sre appticable at the rate of S0.62 per square foot of bullding: 61�100 square isat x s0.52 ��31.�72. This fee is peyebte at the time of bulldir�permlt isauance. � 9. An approved flre sprinkler!s reQulred to be installed tAmughoui fhe stivcture. - �+��• 10, The buildinp sAsll comply with AriicJe 28 (Starage and Handlinp of Combusiibte Fibers). ArtiGe 34 (Waste Maierlal Handiing Plsrit), and Ariide 81 (High-Piled Combustibie Storage) of the U�iform Fire Code. ' Parks: � �.G, 11. Tt�e proposed v-ditch and s�ttration fence Is located dlrectly adjacent to the exlsting asphaR pavea Sprin�br�ok Creek Trail. Caution durinQ consUudlon �twse Is emphasizod. Any damafle to the trail anC extsting vegetation must be reptaced a�d ihe area resloced to o�iginal exlstt�p condition. Existing aluminum benches may neeC to be relocated. Appqcarn rvifl need ta coordlnete thls wltn ihe Parks D�partment. G�y�{� 12. Appiicant wil! need to vecify bcalio�of existinQ trai(anQ easemeni�i8ht-o(-way boundary. This worlc wip need I� �G, to De coordinated with Pertcs Oepa�tment prior to on-site construction work. I ��j]/� "se"� �"y�' �. F` �- �1�k�'��h`�;,� 'Se [$oa n�^$�r� ;�`:.��y�.`.g�.�-0rY<N`�MC j�{��;�w��y�,� �r� �d,`�'rp, 6 h�.,��( �t �sr � ,. +djx. ��I��, � SS Y���'1��vt:�1��<T�k�}��ik���S�C� Y�ES�SVJ������� j,�hS�Z�'(�r.(�� ���X����'�TS,����� �x �� ��` '� t"�w Y�T� S 2'Y� �4. rype of Land Use AcGon x S/N Plan Itovlar X Sho�/ln�Substenda!D�v�lopment Pern�l� CondrTione/Usm 61nQlnp S�a Pl�n Spsdd Pem�l'lor GraOe d Af . _. Adrninistrativs Code D�eterminaUon � uy d R.�eon pieiPwapuan.nt 6,M►o,�n.nar aranMn.aon s Ad�r�l..rw ua/4�lre►� tAfURFIf!?ECI�CLprl� LUA•DbOJ?,tA.FCF �t�oR T�ro nEc.r�onr of�p►i�, »as Iap��er u B. ExhJbfts � . Th�topowinp axhlbib w�ero,enterod into the r�ord: I .. � .' ;' � . '' . : �it No. 1: �doe n��on pir��tf�n�it stin�and pubNcatbn, �nvi►onm�nbi n+ri�w and , • , • . . . • ,.•.Exhibit No.�.. �,Drawln�Na 1 i 2 ef d.SurcharD�and Erosbn CoMrol Plan(R�rid MarcA 8, 1��6� . , . . . . .Exh1bK No. 3: • Orawinp No.8 of a,81t�.Grs�np i lftiliqr Plsn(Roalvtd M�reh�. 1N5). . ... � bditblt No.4: ' Dr�wlnp No.4 0�s,Lindsoapi/Ski Plin(Riaiwd Mareh!, 9005). E�d�ibk No. 5: Dnwlnp No.S oi e,8uildinp Floor Plsn(Riaiwd M�rcA 8, 1995). E�d�IeR No. a: Orawinp No.8 Of 6, Buiidlnp Ewvstlon(R�c�lwd M�rch 8. 1505). , E�filblt No. 7: Vklnity Map(R�celved�Asrch e, 10oS� C. ConsJstency wlth Sfte Plan R•vlew CNte�fa: /n�viswinp the proposel w,�f/►r�spact ro tha Sl�e Plan qppoval Crlteria set 1i�rth In Secxlon�-3t�3(0)otthe S�e Plen Ordlnenae,the l�1lbwHr�lssues hav�e been ldendfisd by Cly Dspartm�nta!/Olvls�a�a/Revkwsrs: ' t. CONfORI�L�NCE YKlH THE COMPREHENSIVF PLAN,ITS ELEAIEIVTS ANO POUCIE�; The Comprehensive Pian dssbnates the projec! site as EmploymeM Area • Indust�ial. Ths palk�as � �tete that thls area should include�comb(nation ot ofBce uses, warehousea, a�d manufactwinQ. Ths . appUcant ls propos�np to construct a rec�rcltnp taclllty that wlll take ln ioose paper and Dundle a. The bundlCS will be stored irlstde the tadiRy uMil N k shipped out. � The policies also stMe thm off-site impacts trom Industriai dev�lopment such as noise� odoR, :NpM ' and plare, surfacQ and �round water pollutlon, and air quality ahould be controtJed through satbscks, o�, Isndscapin�, sueenlnp and/or fenclnp, drslnape, wnirols, environmantal mNi�atian and other techniques. The appflcaM witt be constru� tencinp� drainage coMrols, and lendscapin�. Thes� issues wIN be addrosse�In detait, later in tAis rapoR. 2. CONFORMANCE WIIN EX1STlNO IJIND USE REGUUTIONS; � The project site is deai�»ated as L{�ht Industrlal on the City's zoning map. Recyclinp unters aro o permitted lend use within thts zone p�ovided a siie plan b approvod by t1�e City. ��I The appilcant intends to constn►cl • ten (10) fool taq fence on the subjed property. Sedfen 4-31- � 15.C3b3 of the ReMo�Munictpal Code e,stsblishes the maximum height tar tences wlthin eac?�zone. ��I�IG< , Meximum te�u heipht in the industr�al areas Is estabUshed at ei�M (e) teet in heipht. The applir�nt ��N� ��• wiil need to 1lmft the h�ight of the tence to tha msximum allowable by Code. The appllcant's plans ahow tt�e fence Iecatad In iha center of a twenty foot wide ut�llty eas�mvnt on the west side of the property. The plans appear to I�dicate that the utitity easement is dedlc�t�d !o ��'' the City of ReMon. Althou�h lt is possibie to loc�te tha tence within the utility�asam�nt, the apptloant will �efd to acicnowled�e that the tull length of tha itnce could be removod In onler to�the CNy or a rep�fr crew to access the utilitles. The expense ot replacin� the lence would be tha rasponslbilHy oi the Iar�Q ewner. The g�elicant witl also ee to from!ne ��i�ky thst the easement is dedlcated to in orde�lo locate the tence in th• �ssameM areo. 1. �l17GAT10NOFfMPAGTS TD SURROUNOING PROPERT/ES AND USES; 01�� �The suDjea propeny is located adjaceni tfl the Sprinpbrook Creek. Ther� Is a forty foot (40� G�i • �ntabelVreueation esaement and s twenty foot (Z0� utility easement alonq Sp�n�brook Cnek. Thera is an existinp paved trail arid park benches alonq the edpe of the preenbetUrocro�tlon � � ' ay erR�an Pieirwap.rb�nr E�vL�►rar ar.mir„tlo�s Adnf�trati.c.ee w.A�a, s�axtFrr�crc�.a+ro cv�.�s�o.u,s�t.FCF �o�t�nEcrsra++oF��, �ws r.o.�ori2 usem�nt Th��ppllcaM wip n�sd to ensiue th�t tlwss taUlriles sro protadsd dwin�the constn�dion pe�lod and anr damaQe to these tac�iUes Is repaieed prior to the flna! buildinp Inspedlon. Tho applicar� Ras indksted a temporary and a per�n�neM wster qualtty system for thta projeee;t. Th� .O�! _ . . . , w�ter Quall�tyy teaiuRs rvil!pr�eveM sar potiutsnls f�om the pmpeRy reachtnp thi wrroundMp ana. ' ', : � The spplicant w1u bs accepGnp loosa paper onto tho projeQ aile and�shipptnp�bundlad paper off-slte OWN«. cons�ute af I�ittor��bla�m ast the ad�outdooR � sllawwd also could be a the proj.a sna �wouid ,pr+o j prope probiem If the applinM allows trudca to e�rier the pro)set s�e that have paper escapfnp from the vahldea and uneoverod loads. The appGcent wtll need to i�tut� praprams to �ncour�pe thelr employees to collact looae paper on the �ojed s�a betore it becomes an of'f-site litter problem. The applicaot wpl also n�ed ta l�stitut�a pt+opram to educats the trudc driver� �Dout the pro�lems that may arise to�the appUcsnt If thair loads aro not proparty coManed w�tls accessi�Q this tacUity ar�leavin�the City. 0��� The appiicaM has�lso statad thst thero ts a potential tor recyclable�la�s. elastic. and alumlcwrn.to Oe collected at ihis site. These materials wouW • tKe�udine+�ensur+e that�odents do not become n problem to the adJacent land ovmeis. � �E�G' TRe appllcani has no! indirated a�ipMin� ptan for the proposed land use. In ordar to ansure iho!the '���'"�� outdoor 11phUnQ scheme does not causa a �tare prvblem on ihe adJacent p�opeAias, ths appticaM wtll �U`►� nesd to d�m4n�irat,�tAe linhilr�3�hsme on tt►��sxlsed landsc�nina �lar�. ��� �� T�e app2lcanl has �ot Qemonsirated �'�eR�re + �+ho �+�.��� o{ rath And a ��e produced on- ' � site. Tt�is tadlRy will need to be shown on tAe ravlsed la�dscapinp �lan in 'ccordence wit� the C1ty �jrGf.��� • ondinances. "'����p� M/T1GAT10N OF lAfPA CTS CF TtiE PROPOSED S/TE PLAN TO THE S1TF; • pc,.��.s. � . . . 1'he 8pplicani needs te reserve 2!6 of the site tor wl�dlifs haDilat. The tandscape ptan wbmitted by ���� the appilcsnt�oes nat demQnstrata t a��+�if,��h�+��gor tAe type of plant msterlals that wtp be � maintatned tor wildHfe habitat. The subject pro�eAy (s 4.79 acres (ZQ8,652.4 st�. the applkant will r�,AN . need!a p�ovide a wflrdliEe Aabitat a�ea of 4,173 sf. This area can be bulli around the biofiiration area provlded that the prope�plant materials can be plsnted in thts ar�ea. The applicant wi11 need to svbmit a revisea landscape plan ta the satisfadion of the Development Servlces Div(sion. �N��� As noted above, the applicsnt has shown � fe�ce to be located in the center of a utltfty esaement. • �� W� A�hou�h this is Iepa1, provided the li nt can obtai �ertnis lo from the easement bolder, City ����� 2 staff would lo n t e ast d oi th se Thla would allow � the utlfiti�s to access the �tiliiy lines wfihaut hev nQ io remove t e tence. Aliho�tl ttte prtsent npplicaM/land owne�msy be willinD to replsce tt�e lence every ttme a utility needs to access the pnes wlthin the.eaaement, �uture Iond owners may no� be aware of this potentisl problem until C1ty crews are on slie snd removi�Q ihe fence. . 6. CONfSERVA710N OF ARFJI-W/DE PROPERTY VA�UES; The dev�lopment of this vacani site should help t;o conserve area wide property values. Co�cem has � p��. 3�en exp�essed Dy an adjacent prope�ty owner that if litter is allowed to become � problem M mu(d have an adverae impact on prope�iy values. As noied above the applicant wiil need to impose en on- stte dean-up proprem and i�stitute an educatiooe! pro��am for thair own employeea and Eor outside tn�cke�s to the litter proDlem that thel� loada could potantial ueate. 5lmitar pro�rama have been lnstRuted at the Rabanco faciti�y on Monster Road that have been quiie suceessful. The �ppliuni haa only shown a small amount of lat�dscapinfl to be Iocated atonp the buildinp and � �ip�,� , lence frontft� o� NW 3�ih Street. Othe� propeAies in this eroa have provided a rnore robust d�� . Iaadscape plan tor the(r sites. i�L1Qhe10+cons��^a wid�ape�alues the appllcont_w_ili f rev n sca in � ay erRawa,P,�a�Pw a�nr En�o�».nw o.�wn�ln.�ten s A�t�a.a�.t.a�a u..A�on ' iARA�7Tl�ECYCLIIM� LUA-96-0�J.�A.ECf � Rl?PORT AND O�GR�ON QF/�/A�1.1�!7 � Pp�t of!2 f, tAFET'Y AND FFFIC�NCY QF YEMCl�AJIfD PEO�ESTRLLN GD4CULATION; Tfr sppUcant has s�a�st�d !he auton�obile tnRk frnm the heav�r trudc t�c by sepiratinQ the O� p�lctn0 �re�s and �aess poirU. AutomobH� tnflfc wN access the slte oo the East side arb puk on that sida of th� butldtnp. Ps�kM�Q Is p�+ovided aff ot both sld� ot a sMple ai�1�. P�dat��s from ., .. . . ..... .. . .._._. .�0S°�hldes white socess ihe but�dinQ e��aafy from the psrlclnp la withouc mw�appa�arn dimarlty. � W� . Thers is no path Indic�ied on the ptans to conned fhe Duildinp with th� sidewalk on SW 34th 8tnti. A �strian path should b�� p�vided from the buiidinp !o !ho straet sid�watk. This will albw ' �iWl�? �m�ayees and other pedeairlsns aaessinp tAs�Du1Wl�p to eMe�wlihout havinQ to use the veMwlsr er�rances. . . ', 7. PROUISJOIY O�F ADEQUATE LJOHT AND Aa4; � �, The applfcaM has locatsd the bupdinp b�ck lr�om ali ot tha prop�Ay bounda�i�s. This wip �Now for , �dsquate sun ltpM io r+each the buAdinq and alao tor aQ�quale alr moveme�t arour�d the buNdinQ. I a. wmc�nav o�NorsE,000Rs Mro on�a wu�.��uc oa uN�un�n coHomavs; I ��l The propossd land use, if propeAr maiMsUad.=houlQ�ot ueaie any R�rmfu� or unhealthy condklont. �'+��"�• Ths outdoor ston� of paper snd other recallsbie materials could cause sipnificaM imputs. The ' �41►!!'1G Z applir.�M's Rp�+ese�aUv�s have Indir�t�edifi „ there wlll be ne e�_�+. ��. �f Mst �s�s�� that • tt►e recalisble mate�tafs wtli be IimNed to peper producls and potentlally plass. If the appitcaM deslros OWw� to incroase tRa list of maierials accepted tor reeytJinp the app(icant v+rill need to obtaM w�itt�n � approval tr+om the Clty. If it is determined that the proposod expansion ta not similar to the uses i p�vposed at thEs time�the appticent may need to underyo fuRhar envlronmeMal or�tte plan nvt�w. �. " AViVLAB/LRY OF PUBIJC S�RNCES ANO Fi1Cl�Rl1E8 TO ACCOMM4DA�'L�THE PROPOSED USE;AND T)�e project site is adequately secved by u111Hies and roads!o s�rve the proposed us�. The ,ppfiCant � ��i•' witl need to provide five Ike hydrants with a flaw of 4,250 GPM. One flre hydrant wlll n�ed t� be �,�M� �p j, within 150 teet of the praposed structure snd t�e remainder will need io be within 300 leot of the buildinp. �0. PREYEM]ON OFNEIGH60RH000 DETERIORATlONAND BLIGNT. � The construWon of tM Duilding in �self wiU not cause neiphbofiood deterlorstion and birohl. The improvementa to the vacant lof should help to preclude tAe vacani lot trom Dei�p allawed to � deteriorote by a vscaM land owner. • The appllcant is prflposin�•io collect paper pnoducts and potenti�lly �lass on-site for rocydlnp. OWNt�, AltReu�h lhesa materials wtll not be processed on-aile lhey wU! be sioned. bundled, and prap4red tor shipment. Th� eppliCzM hes vEt�lly Stated Ihat th�r� ..�i� � n�ts!�+e oraee at��ec�iHv � that should �pminaie the proWems that have allsen on the appticsnt's existin� tadl�y. Sio�ps of loose p�per and �lass botlles outslde of the buildln� could cause litter enQ odor problama for ihe �Jacent propertlsa. Siaif witt rccommend that a cond(tion be placed on thfa proJed �quJr(np lhat there bf o ou 31de sto oe ot�ecycl blr.�mdus�� . copl.s oran I�Nr.caninwra an canba.er,a.oll�Jar FIW� X CoOl�r oI�Y R�rt�w Conr�an�tbcMd(01hb�oor! . • ' C�o/RMten PiB�PW OMp��nt f�o�rrxn�YOrN�nYuD�on i A�b�M Lm0 LE�A�e�on • sMc�f1TI�GYC1� LUA-96�03?,�il,ECf �ro�MaD c�Gsrav o��1p�r� toos �.a.o a��s FIND/NGS, COIVCLUSl01YS d DEClS10N Havin� revie�wea ihe written rseard In ths matte�.the City now mak�s and eMers the tollowirp: . . . .. • . . . i . � , .. . , ... D. �.flbdln�s . :. � .� . � � . . _ . .�. _. . � . � . . . :. :. !) '•• � R�quu� � The�AppliuM. .Runriinp� Biar� �Inc.. A�:� riqwsted Envfronmentaf Revisw 6 6ka Plan � � ' Appmval tor developmerrt of 8miuflt Matsrfa�Recovery Fidphr. � 2) Envl�nnMnta/Rw1oM►: 7hs sp�ilcant's file o�Matninp ths application.the btat� Environmontsl Popq Act (SEPI� dowmentat�on, iM commonts from va�ious CRy dapartmeMs, the puD[ic notices roqnaUnp � c�iun wmm�nt,and othor peR{noM documeMs w�s ontend as Exhibit No. 1. �) S/h Pbr�Rovl�w: Th� �ppllcaM's slte plan appt'�cstion eompli�s wiih the rcqulremants tor inlornutlon tor site plan rcview. The applicant's site plan and other proJect drewinps�re�entend u ExhiWts No.2 tlw 7. �l� Compnhonslve Pl��: TAs subJscl pruposal is consial�ni witA the Compreher�sive Plan deslpnatlon of Employment Aroa•industrfal. ` . b} Zonln�: The sks plan as pr�esented. complias witA the toninD raquir+emenb and d�volapment atsnCards oi tha LipAt Industrlsf{IW zonin�OeslpnaUon. a) F.arlstln Land Uso: La�d �ses sumoandlnp the subjed aite include: Norlh: comme�g! and lndust�fe�, EaaL• L�M Induslrial; South: lnQustrial and commerclal;snd Wast ibht industrisi and comrnerciel E. Conclus/ona � 7) The sub)eet�proposal complies wiif�the poltGss ond codes of the C(ty ot Renton as conditloned Dy statl. 2) SpaN�c Land Use {e.p. Slie Plsn Approvan issues were ralsed by varlous City departments. TAese issues were addressed in the boCy of the report. 3) The proposa� compiie= with the Comprehensive Plan deslpnatton of Employment Area - Industrtol; and the Zonin�desbnatlon oi Lipht fndustrial. �) TAe applicant has stated that this facillty wlll be limited to the recycfinp of paper produds a�d potentially�lass products. F. Docls/on � 7'ho Sna Plan fo� SmurlTt M��sls R�covary Faellity File No. LUA•96-039 !s apprvwd subJect !0 lbllowlnp condlflons: CON011/0NS t. The recrcJin t,cility ia Gmfted to t�e recovery and reryclin� of papef produc�s, aluminum. pl�sile, c�s and plass un ess fuAher uses are speGflcally appreved by the CRy af Renton (Nota: Chanpef may 4WN6�+ wartaM site ptaNSEPA revlew). Storsge of ne�rcJaDle produds is limlted to the inte�io� of the proposed butld� and no outside stora�e ot recydable materials sAatl De allowed unless sp�c+ticslfy opproved by tt�e�Ry ot Renton. Prior to the isw�nce of buildEnp pertnits, t�e appUcant shall record a ; eove�ant o� the prope�ty limiiln� the colleaion of fecycled materials to psper products, aluminum, pt�stic. And plaas at thia faality and limit;np the storape of lAese recyGable materials to the irriedor of ihe buiiGinp. If' . ' C�y d A�nlen P�PW DrpvOn�nt • E�ionen�af D�nN�No�i Ad�rb�ON Land!�n l�eia► SMI/Rf/T1tEC1►aW0 LUA-�S03T.sA.ECF REPORT M�D�EC1SlpN Of Apl�Z�lS P�p 10 eI t= I1iMM"r Z. �Nfr IS aft CX�f1� �Y� �U 1MI�h �1( b0A�1�3 i�jBClC1i t0 1h! i�CQifi �OCt ik0. Th! �. applka�t �+alt enw�e i�at d� f�stu�s �n pr+ot�ded dwinp th� constructton phue of ths pro�d and ropair any damape to thts area to tM satldactlor� of tha Oevelopment S�rvic�s Dlviaon pfor to , ttN tlnal i�apedlon oftAe propos�d buildinp. , . .. . • . . lut.. S. The appllca�t shail demonsirate the proposed IipMl�p plan end a traah ator��e'irea�on 1he nvued A�•M landscapinppIan tor this pr�jact. This plan shall bs submitted to the satisftaton,ofi tf�s�Dw�]qpment (�ri�� Servic�s Dtvlslon priar to 1he issua�ce of buqdinp p�mi�s. � � p�t,,R, �. The sppEicaM shaU� In ordar to r�educe the potantlal tor ikter blowinp fr�om the slte, a�wn that a11 paved suRaoes an k�pt daan ,nd deaned �ularty, that all landscaped �roas sro kept d�an and Geened ropula fir to r+emove Ilttedd�is, �nd that aN storape co�tainers aro covercdby�tarp or other suttable sscurity device. Priot to th� iscuance ot buildinppe nr�hs, the applt�aM shail'propare an apr+eement to th� �adlon ot!�w CHy Attomey ailowtnq t1►e C�r ot RaMon to {nspect ths tadlity a�d ff iAe applk;arn does not provide romeQial �lon racommanded by th� City wkhln 30 d�ys to rslmburse the C1ty for sll expenses fncurrad to�the rzqulred dean-up. OM1wQrYL 5. The appllnM sAap, in crder to nducx the poleMial !or litlerldebris blowinp out ot,tn�d�. d�velop a tralninp prop�am ihat includes but is not necesss�ify Ilmlted to traln�np p�rams tor stalf and h�ulera. to oonvinca AaukR to prope�ly cover th�ir toads with larps nr oiAer metAods that pnvent ptt�r blow� out. Prtor lo the issuance of buiidinq permits a o�py ot the trafnin� propr�sm=hatl be submitl�d to!h� satiafa�tion of the OevelopmeM Senrices Dlvislon. OMN�R� B. �� �PPliunt hss a rssponsib(lity to keep Rttor tr+om tnrdca or irom the proposed t�dl�y from collacti�Q on CIty sttaets. The C�y wn�l review this condiUon one year trom the date of approv�l�nd l! . ln the opinion of tAe City ih� �pplicant Aas not complied with th(s condition� the spplieant will post a surety device eqval to fh� laat yesrs speual dean up by City staH. Thle suroty dfvice wlll be used io rotmburse the Cd�r for the Cosi of any futur+� dean-up by C�y staff. The epptte�►nt wiN need t0 provide a new surety device wiNin 30 days of the City usi�p this tur�d tor the clasr�-up ad(on. �Nw��• 7. The applicant shati submit � revisod �andscape plan to provide additior�ai p1nntlnps alo� the fence and buildinp frant(np on NW 3�th Stroet. The appltc�nt sha11 demonstrate the wlidliio habitat a�ea on the revised andscape plan. includtnp tho stze ot th� aroa, pfant materials (common 3 Latin nameaj, size of tAe plant msienala, and time period in w�ich the �anti,� will oaur, A wpy of lhis plan:hoU be aubmiried to the saUafaction of the Development Services Divislon prior to the Issu�nce ot buildin8 pennits. . �y��rw.• 8. Tha ap�licani shall loute the proposed fence to the East side oT the utility �asemeM or provide , �� covsn�nt with the City�tlpulatlnp that the Citr h�s iAe ripht lo remove the tenca in o�dar to aa�the uiDlty essemeM and the replscement of the fen�e will be at the eupe�se ot tho land owner. The applicanl shati also provide tha OevefopmeM Servlces Division wtth a letter trom tf�e wiliry st�tinp the appllunt �as permission to InsiaU tl�e te�ce in tha utillty easemeM prior to tAe constructlon o�tM �ence. rw�. ���� • 9. The appl(cant st�all De�mRed to a fence olgM(8)teet in fieiQht unless a veriancs is obdained from the ' City of ReMon. � DATE OF DECISION ON IAND USE ACTION Aptil 18, 1095 SIGNATURES ' �_ r � sr mor C H�nson,Zon�►�Mminlstnta • dat� . . . � , � ��/-1�'`I 5" Micha�!O. s twm ru�.Zonkno Admtnist�tor dua ,:,,,;y. ... �� .� - _ -- -- F. � f .+ a�►d+�.��wrwc�+w,w�r ��+�•+�ara�.a�s�ww c,r,dus.� ` ��ua�n�cwx�a tu�-��o.ia,s�.Fc AfPOiRTMD O�CR�ON Qf�{p��t�DQ P�11 d f ! TRANS�IR7E'D th�s 1AtA d�Y��1Pti. ?�to th�appicant and owMr. � . � ' Mr.John W.Ho11Mn Jr. . . Pnsld�nt . . . , . � - , . Hop�n Dultsman Arohlt�cb, lnc. • Fkst N�tlond 8�nk Bull� . , . �. : � - • � � ��1360�Iti�idD!•Payni Rosd,.Suit�� _ '. _ . . , ' ." . � .. ; . . :. • � •gt�Lou�s;MO 63017 � . . � . . . � . . .. . . � Rwiniep Qat.inc. , . . . . :° cJ0 Tlmo�hy L 8�rty �" � � 7701 Fortyth aNd.�zuk�D00 St Leutt, Mic�owi 03105 • 7RMtSMl7TE0!hb 1 oth Qiy ot/�nL f�S to th�partlrs of nca+d: �+o��ro Art�abst�Inv�stenutt � J401 Und Aw. . • � R�nton.WA 68056 • .. . ', , . . ; . . • • � . � John Lanp • Sa�y Caryorstio� 101 Elaat Av�.W BNttN,WA�s11� TRANSMlT7E0 lhh 19ith Ooy ofApvr7, l0p5 to the fa0ow�ng: �Yn C+w+dMr,B�iDdi+p OAk�d ' AR t�raon,Flr�M�r�! � N�I Watb,PubYc Wafb OlwlOn Lawr�ce J.,Wanrt,GY A11en�r�r . ', • V�!►�N� � . . . . Envlronme�tal Contm�nls orAppeals t!►� e�v(ronmenial decicions will bocomo Anal I! tA� d�d�loNd�cbions is not �ppe�t�d wfth�n 14 d�ys of tAe dat� o( • puDlkstio�. An�pp�sl of Nther ot both dmclaion� must b�filad within th� 1�day�ppeat period(RCW 43.21,C.076(3r WAC 1: 11-d80). Coa+n�ents or appsals must be tiled!n writin0 on or b�lon Ap�11 T'�� 1�93. � Lsnd Us�Actlon Appeals a Roquasts f�Recorulderadon � . ; � The sdn�inistraW�land u=�deCisIo�wiil b�com�flnsl if t�e d�ciWon u not spp�sled within 1t days of the dab ol.publlaUon. i �ppe�l of th�d�cision must be fil�d w�Min tAe 14 d�y app�al p�dod(RCW t3.21.C.075{3);WIIC 107-11-880). � R£OUESTS fOR RECOKSIOERATfON must be Aled In writinp on or betora Msy 6, lOOS. My a�gNw�d p�rson iNNnp� � � th�d�cision of the Slt� Pbn Rw[�w Committe� it ba=ed on�Roneous procsdur�, �rron of law on c�t, enor In Jt�dpm�nt, or i � diseovery of new widena which eauld not b�reasor�aby waUabl�st th�prio�rt��stin9. may m�lu�writi�n nqu�s!ta th�Zoi ' Admini�tntor br ravi�w by 1h� Slt� Phn Gommkle� withM fowtMn (14) dayt of publlcatlon. This rpusst th�p s�t fonlf . specNfc�rran relied upo�by sucA ippNl�nt, •nd th� CommiltM tmr, �Rer twlwv of tM r��ord.tak�tuRN��actio�sc k d�� � p�op�r. K �n �pptal fa m�de to the Maarl++g Ex�min�r, rpvab tor rocan�idention wip b� tonvarded to tMt of(t�e � conNdentiot+�t tAe sam�timt as ths sppeal. - AN APPEAL TO THE HLARING EXAMINEIt is �ovemed Oy Title IV, Sectfon 4-8-11.8, wNic1� nquins th�t such spp�als be : Q(r�etty wKh the Haaring Examl��r, Appeals must b� mad� I� wrltJnp beforo 6 p.m. oa May 6� 1906. Any�pp�N mu� accompaniod by�575.00 f���nd oth�r sp�cific requl�en►ents. THE APPEARANCE OR fA1RNESS OOCTRINE provid�s tMt no �oc psrte (priwte on�-on-one) cornrtwniptloeu m�y o concemMg bnd uso Nasion. Th� Doctrin� appliee not onfy to tha initial commfttse decitlon, but to �II Rpws1 i Reconsidentlon��wNl�i Appaak to the Hqrinp Ex�mirwr. 11l1 communlutlons aR�r tAe d�cisbn d�te must be ma0�in wi � ttuoupn th� Zonln� Adminietrator. R!1 oommuMcsUans u� public reccrd snd tAis pertntts at1 inte��sted partle� to kno+� � � , eontentt of!Aa tom►nu�iqticn�nd would atlow t�em to openlr nbut tt�e evids�ce in writin�. My vlolatbn ol thh doctrine c i � nsult in ths fnvalid�tion of tAe r�quat by ths Court. c�y aR.�a, � REPORT p�epertment of P/anninp/Buildinp/Pub!'�c Works � EIYVIRONMENTAL REVIEW� DECI SlOIV ADMINIS7'RAT/VE LAND USE ACTION DEaS1QN DATE Aprll 4,1�5 � Prc�ed Man�s Smwlit Materfal�R�covery FaGlity � App�cant Runnlnp Bsar� Ine. F�e IYt�r�ei LUA-09�033,SM.SA,ECF Prvled Mana�er Madc R. Pywea PJroJeCt D�sArfpU0r1 Th�appllant�Mks Slt�Ptan Iippraval, EmAronM�ntsl Rwi�w�nd a Subsbntlat prvNopment P�rmk to oonstn�d�concrat�U'It-vp bulldi�for a mat�ri�b ncov�ry hdiihr. Th�sppUnnt proposu to corntrud s 81.100 si ncycQnp c�buildi�p. Pukin�fo�58 osrs nrtil be provided on-dt�. Approxim�t�ly 75l�of th�s�wlll�cownd by fmparviou�surfia wiih tA�nmaind�r r�sav�d tor landu�pin��rd wat�r qu�lity tatur�s. Arojad Locatlon Scuth sida of SW 34th Streel. East o�Sprtnpbrook Creek� W��t ol Und Ava. Exisf. Bld�. Area�sf WA Praposed New B/d8 Area 81,100 af Stte Area 4.79 aaes Tota!Bu�dlnp Ar�a 81,100 sf 1 j �':►.- . �•�M��+vn � i , . . . ....�_ \�i�` , ; i ' {'I _- ii; � I .i� , • 1 �.., {� r'. I �,. ...� r + � �, .� ' ! •-•- � i .�� ' ..», .. ..�i ...., y .._. :�� j':' � - (�A •���� �r.�• ' � r `j � .._.�� t . ; •�..«. .� .,�. ,f t ��'� .... s�r� i ; ' � � ' ..», _ � � ��� ; � r ,Ed ' , ' .. / L � �f� �INt � I I.. � � �.i ,.. . . 1�, � �� '� ' � . � '', ^ ,r•I i s+• •...�r'f-.iTJ�..r�:J� �t..� /.; . y � J /M �_. ,ii �~ �" /�'I ���•��� '�.�' I'� , 1;. � .�►�i .�+..r�.�, �•..,.T:�._� .. � L. .�. . .. _...,�� - � �=� r .�=-__ r .�-�.-�. ,�t: � �—,r�� ,.M._.,. .. •-� ��. ' � , �• • I�i�!E!qMl'r� .�. �.. I ' � .. j ' wwe�.�.��wr.��sv� �oRw000�•N W. �:-s.�ars , � KING COUNTY SOIL SURVEY INFORMATION 5197.003 [MSH/kr] �•�o . . • ; _ ./ � � �:� � '{:Y. .; ,•, � \� �'Y"� i �;,, ':� 1 � ; } ..,' J� _�..�.� i � � � G-� ,�� ����� � � �i•'G�� ��■� PE :���:�'; 5` 4� • � ' `� ���.., �': IL�iry � .��� � �� ��.`Q�� �� 'X�j`/'� �1 .;7. � \ • �L . ' ► � � ���� �` . 11 '. Af:D '7 � � :_ f ��- i 1 ii nGC . , � .i.,� � - ` 'I-4` IQt+I ��� � `-^r�-� �. �_.:• ' .1.' :.�' :,� • �•. ..�.G .�� .�: �k A k 'O�� `} ��' ,`-� ' .i � . :1� iil1�l !E; .•,� � _ ..�' p . . t� I � -�1 �. 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N/ ��;'' ��; Ur ��..� 1 �• ��• .��.,r � �/�B� 4r .' !' t' a�� . � � ��'.� �i�•� t � �/.� . � - _ _ � " -`--- ' � ii$f+l ••� .. _ - �.��—_:Ey�' .�.« ,��� � W� Tretk '� --- -_ B `� d + - \;�: �ti \ _�� 2i0 �- - -- - _-�'::`t�\---..- _'�c'_ � n� 29 i� "� ', *�--=�--r=-'--�J �._ a r i ` �� Ur 6I 1 Y � �I�I ��'• qgC ;� i.�U.l �' ro i N@ " II—�v � /�O�R rvOir � � ��---- �-� 1 J=- Q'i _ - } w .. .L' . ., "'�-'=1 � ���_-_� �; .i C � - P l � D W r�, �: . � �^_ ��;, . j! .��:�--� - 1 ` ���b�' .Tu Z � •1; �J�. '_ , � 2` y � S� e - �=�1;:: �r, ji; ,. �'\� E 1 i 2 'w � `, P� 1 Sk � �`✓��,. `� ,_�_� � .! � ,, �•��_ •jj \ . , �. j i Wo ' � I F� , . . , i I/ i Fu' . �� � �'��) ;�u i�� -- 'rT � . >> ' 2 v ' .�_ :.q,M. �sM � . 29 • `�.`_ -/�� ;i. 26 � ��� •� )� 25 _:-_ r _ ' �� ` �t: �zo3 . ( r. �{ 'w l \ _ 1 A��` ' ' -' - ! ` \r� �1 \ ! •�t` ! ���� `�`': . I � 'S� .,• \� i�� � � :, Py) ��--���l 7, . . ��'�_��� ,, ' i `� R�f n tiYc, .� • ! �•u�\1��; • � . .1 � ---"��.�n.0 ..��\`� . I ��� !:� 1 ��. ...� _ � � �� �.�- � {T� II /� ,r• < < _ �� _ � �u� /.r li� . ../ � � . . . � .- � • _ , , j: � i � / i ��, 4_, "i(�� -�.� J �� \._ � , , i -�� .I'InC � •� �____ 1 � � � U' a / i '��-}�_�A. 1 AgD . � ' �� iAmP t � � ( So ' c ' �. .�--� =_-- . I , i y� M 17� • . ./ 'S •� � •--- - ' � ` -- ---"-- - -- e.- . -- - - •i"`• ,i. .. 't*_ �' _ __ - 4 __"'.. • .. ' ! �j \ _��.�� /_� �� I �1 F'�� � I .... ;� �,� ~ . fi � •P G. ' {,� � �, ���- � ,. `) ./�:?���, �M 'c� �� , � •�r •�' • . � - , , .>, 1' :k .' � • � . ,I�. T . �� �. -]i�l � ; 'r.y��r]/c I � ; � �/�J s �R '\' .�. .. ;-1-'," - .... . 'i ' � �,r u /r � �� . !,� 1 • � 1 : t � • �' . ,.� i ,T^_ �.._...ij... �.._..�1-\� ..� i .. . j�')lt �'• `• } t.' i _ ' � � .� �-� � \li� . �ie.�_ Jl. � ��` ; ���•� � � Z f�� _,/ ' .., •T: � , •• :�'• , �+ . a`.��`} \ , •�/:�AmB' •t.,_T.(.`..�.;_� il�. r�'•:`�� � i `��_.� -�'��. `. � � ti. i , \ ' 1' .�t/` . \•''-'>-, �,� � - � ;,,.,i 1 I: � ---; - - — 32 -_ � -- - 36 � �. • •� , � � , � • ,j,. �,�t� . . ����i��,�, �j �;� - __ .��,_ .. � ' �� ,, � � . �:: . � i . . , 1 . ....... ....... '... . � KIIv G COUNTY, WASHiNGTON, SURf= ACE �VATER DESIGN !�1 ANUAL � " �-�' (2) CN values can be area weighted when they apply to pervious areas of similar CN's Iwithin 20 CN points). However, high CN areas should not be combined with low CN areas (unless the ' low CN areas are less than 15°� of the subbasin). !n this case, separate hydrographs should be generated and summed to form one hydrograph. FZCURE 3.5.2A HYDROLOCIC SOIL GROUP OF THE SOILS IN KING COUNTY � _ ' • I HYDROLOGIC HYOROLOGIC ' ' SOIL GAOU� GROUP• SOIL GROUP GROUP• ' Aldecwood C Orcas Peai D � ` Arents. A�derwood Material C Oridia D Arents, Everett Material B Ovalf C Be2usite C Pilchuck C ! Bellingham D Puget • D , Briscot D Puyallup B BucMey D Ragnar . B Coasial Beaches Variable Renton D Earlmont S�t Loam D Rnrerwash Variabte Edgewick C Sala1 C Everett i4/B' 'Sammamish D lndianola A Seattle O Kitsap C Shacar D Klaus C Si Silt C Mixed Allwial Land Variabie Snohor�nish D � . Neilton A Sufian C I Newberg . B Tukw�la D I, Nooksack C Urban Variable Normal Sandy Loam D Woodinville D � . HYDROLOGiC SOIL GROUP CLASSIFlCATIONS A_ (Low runoff pote�i'�a�. So�s having high infiltratlon tates, even when thoroughly wetted,and consisting i chiefly o!deep.well-to-excessively drained sands or gravels. These soils tiave a high rate of water � � transmiss�on. ' 8. (N.tiderately low.nmoff potential). Sods having moderate infdtration rates when thwoughly x•etted, and • consisiing chiefly of moderately fine to moderately coarse textures. These so�s have a moderate rate of water tranSmission. G (Moderately high runoH poteniia�. Soas having sfow lrifiltration rates when thwoughty wetted, and (� : consisting chieNy o(soas with a layer that impedes downward movement of water, or sods��th-moderately ' • tine to fine textures. These sals have�a slow rate o(water transmission. �•D. (High runoH poteniial). Soils having very slow Infli tration rates when thoroughly wetted and consisting . chietly ot day soits with a tiigti swelling potential, so�1s with a permanent high water tabte,sols whh a hardpan or clay layer at or near the surface, and shallow soils over neariy impervious mater�al. These soils � • ' have a very slow rate o(water transmission. � ` From SCS, TR-55, Second Edition,June 1956, Exhibit A-t. Revisions made irom SCS, Soa Interpretation . Record, Form #5, September 1988. , � � 3.5.2-2 • ii192 . KING COUNTY, ��' ASHINGTOv, SURFACE WATER DESIG �' MA i� UAL T.a[3LE 3.5.2II SCS �'VES"CERv�VASHINCTON RUNOFF CUR�'E NUMBERS . �y �. , SCS WESTERN.WASHINGTON Rl1NOFF CURVE tdUMBERS (Pubiished by SCS. in igg2j RunoH curve numbers tor selected agricultural, suburban and urban land use !or Type �A rainlall distribulion. 24•hour storm duration. _. CURVE NUMBER�BY HYOROLOGIC SOIL GR UP ' LAND USE OESCRIPTION A 8 C �D Cultnrated land(t): winier condaion 86 9t 9: 95 _ Mountain open areas: low growing brush and grassfands 74 82 89 92 Meadow or pasture: 65 78 PS 89 Wood or foresi land: undisturbed or older second growth 42 ba %o t. WOOd or foresi land: young second growlh or brush 55 72 8t Orchard: with cover crop 81 � � -4 Open.spaces,lawns, parks, gdi courses, cemeteries, landscaping. good condition: grass cover on 7596 or more of ihe area 68 80 60 � fair.condition: grass cover on 5096 to 75% of the area 77 85 9� 92 Gravel roads and parking lots 76 85 E9 9� _, Dirt roads and parking lots • 72 S2 E7 89 Impervious su�faCes, pavement, roois, elc. 98 98 98 8 y' ����� Open water bodies: lakes, wetlands, ponds, etc. 100 �00 tG� � 0 Single Famrly Residential (2) • Dwelling Unit/G�oss Acre � Impenrious (3) 1.0 DU/GA t5 Separate curve number 1.5 �OU/GA . 20 shall be selec�ed � 2_0 DU/GA : . 25 for pervious and 2.5 OU/GA • 30 impervious portion . 3.0� DU/GA ' 34 at ihe si:e or�sin ! • 3.5 DU/GA 38 � 4.0 DU/GA • 42 4.5 DU/CaA 46 5.0 DU/GA 48 , 5.5 DU/GA � 5� 6.0 DU/6A 52 6.5 DU/GA 54 � 7.0 DU/GA ' S6 . Pla�ned unit developments, °k impervious ' condominiums, apartments, . must be computed I commer�ial business and industrial areas. � (�) For a more detailed description of agricuttural land use curvz numbers refer to Naiion�� Enc'�eering Handbook, Seciion 4, Hydrology, Chapter 9, August 1972. {2) Assumes roof and driveway runoff is directed into street/s:orm system. (3) The remaining pervious areas•(lawnj are considered lo be in good condi�ion for these curve r.;,mbers �?�j ' , 3.5.2-3 i���^ If drained, this soil is used for row crops. It Ap2--3 to 8 inches, gray (5Y 5/i) silty clay loam, is also used for pasture. Capability unit IIw-3; light brownish gray (2.5Y 6/2) dry; many, no woodland classification. fine, prominent, dark reddish-brown (5YR 3/3 and 3/4) mottles and common, fine, prominent mottles of strong brown (7.SYR 5/6) and red- Urban Land dish yellow (7.SYR 6/G) dry; moderate, fine and very fine, angular Ulocky structUre; hard, Urban land (Ur) is soil that has been modified by friable, sticky, plastic; common fine roots; ,.lsturbance of the natural layers with additions of inedium acid; ab n�pt, wavy boundary. 4 to 6 fill materisi several feet thick to accomiaodate large inches thick. industrial and housing installations. In the Green 621g--8 to 38 inches, gray (SY 5/1) silty clay loam, River Valley the fill ranges from about 3 to more gray (5Y 6/1) dry; common, fine, prominent, than 12 feet in thickness, and from gravelly sandy brown (7.SYR 4/4) mottles and medium, pmmi- loam to gravelly loam in texture, nent mottles of browiiish yellow (lOYR 6/6) dry; The erosion hazard is slight to moderate. No 25 percent of matrix is lenses• of very dark capability or woodland classification, brown (lOYR 2/2) and dark yellowish-brown (lOYR 3/4) peaty muck, brown (7.5YR 4/2) dry; massive; hard, firni, sticky, plastic; few fine Woodinville Series roots; medium acid; clear, smooth boundary. 30 to 40 inches thick. The Woodinville series is made up of nearly level B22g--38 to 60 inches, greenish-gray (5BG 5/1) silt a�id gently undulating, poorly drained soils that loam, gray (5Y 6/1) dry; few, fine, prominent formed under grass and sedges, in alluvium, on stream mottles of brownish yellow (lOYR 6/6) dry; bottoms. Slopes are 0 to 2 percent. The annual massive; hard, very friable, slightly sticky, precipitation ranges from 35 to 55 inches, and the slightly plastic; strongly acid. mean annual air temperature is about 50° F. The frost-free season is about 190 days. Elevation The A horizon ranges from dark grayish brown to ranges from about sea level to about 85 feet, gray and from silt loam to silty clay loam. The B In a representative profile, gray silt loam, horizon ranges from gray and grayish brown to olive silty clay loam, and layers of peaty muck extend io gray and greenish gray and from silty clay loam to a depth of about 38 inches. This is underlain by silt loam. In places there are thin lenses of very greenish-gray silt loam that extends to a depth of fine sandy loam and loamy fine sand. Peaty lenses 60 inches and more. are common in the B horizon. These lenses are thin, tiVoodinville suils are used for row crops, pasture, and their combined thickness, between depths of 10 and urban development. and 40 inches, does not exceed 10 inches. Soils included with this soil in mapping make up Woodinville silt loam (Wo) .--This soil is in elon- no more than 25 percent of ti�e total acreage. Some �ted and bloc y shaped areas that range from S to areas are up to 15 percent Puget soils; some are up �.�;:arly 300 acres in size. It is nearly level and to 10 percent Snohomish soils; and some areas are up gently undulating. Slopes are less than 2 percent. to 10 percent Oridia, Briscot, Puyallup, 1Jewberg, Representative profile of Woodinville silt loam, and Nooksack soiis. in pasture� 1,700 feet seuth and 400 feet west of Permeability is moderately slow. Tliere is a sea- the north quarter corner of sec. 6, T. 25 N., R. 7 sonal high water table at or near the surface. In g, ; drained areas� the ef.fective rooting depth is 60 inches or more. In undrained areas, rooting depth Apl--O to 3 inches, gray (SY S/1) silt loam, grayish is restricted. The available water capacity is brown (lOYR S/2) dry; common, fine, prominent, high. Runoff is slow, and the hazard of erosion is dark reddish-brown (5YR 3/4) and reddish-brown slight. Stream overflow is s severe hazard unless (SYR 5/4) mottles; moderate, medium, crumb flood protection is provided (pl. III, top). structure; hard, friable, sticky, plastic; This soil is used for row crops, pasture, and many fine roots; medium acid; clear, smooth urban development. Capability unit IIa�-2; woodland boundary. 2 to 4 inches thick. group 3w?. 33 f � 1�1 � � � � � 1�1 � � O 1�1 A. UPSTREAM ANALYSIS No u�am nmoff con�n'butes to the P�P�P�.lect site. The ov�erall topo�y of the surrounding ar�a is prinnan�y 8mt. Thc site itsdf is bordered on thnee siaes by light induatiisl dev�eloptnent, with S.W. 34th Street rtmmng along ihe sile's noiih p�operiy line. In addition, the Spiing Brook Crak Greenbdt / Podaa�i�an F.asem�stt and Spriagbrook Creek lies adjscent to the wc�t prapeity l'me and directly west of the gceenbelt /pedcstrian easement an c�stimg District No. 1 R/W draiaage ditch is locatcd. LJpstrcam nuwff can not enter into thc site from the �outh or east dcv�elopmenAs. An existing besm e�e�arates the proposed site from the prope�ty located alcmg the south properiy line and adjacent property lying to the east has ita own on-sitc dr�e system. B. DOWNSTR�AM ANALYSIS StoYmwater nuwff generated by d�ie site w�71 be collocted and rotrted through a tig�t-line drainage sy,stom. The runoff w�t bc released into the abav�e mentioned Springbrook Creek. Per the King County Surface Water Drainage De�gn Manual Core Requirement #2, no downsiream an�lysis is rcquired. , IV. RET'ENTION/DETENTION A.NALYSIS AI\TD DESIGN __� ( l IV. Retention/Detention Analysis and Design a. Fa�sting Site Hydrolog,y: The exisdng site is 4.8 acres in size. The site is predominatety flat with small brush and grass vegetadon. Based on the King County soils survey, on-site soils have been determined w be approximately 100 percern Woodinville sih loam. Please refer to �e soils survey map in Section II. b. Developed Site Hydrology: All stormwater runoff generated from the site will be collected via a storm drainage system and will be com�eyed to the detention pond with grass lined swale prior to discharge into Sprin�gbrook Crcek. The storm drainage detention system has been designed to provide detention in accordance with the King County Surface Water Design Manual using SBUH analysis. c. Hydraulic Analysis: 1'he calculations and methods used in sizing the detention pond are based on the items outlined within the King Courny S�rface Water Drainage Manual. The detention system has been sized using the Waterworks software program. The detention pond has been sized to meet Department of Fish and Wildlife requirements. Calculadons and computer output are provided wiihin this section for more details of analysis. The on-site conveyance system has been sized to convey the 25-year/24-hour design storm. Calculations for on-site conveyance are contained in Section V of this report. � d. Retention/Detention System: The detention system for tlus project will be a three-celled wet/dete�ion pond with a flow restrictor manhole to control discharge from the system. The pond will have a minimum of 3 feet dead storage. The cornrol structure releases outflow directly into Springbrook Creek. Please refer to the grading and storm drainage plan for the complete details of the detendon pond overflow structure and water qualiry swale. , i � __� �-l ; � � �l r--) Ir � �--� 5197.004 [AS/ca] SMURFIT RECYCLING COMPANY Simimarv of Data Used in Calculapons: Soils: "Wo" Woodinville Silt Loam (Type "D") Existing CN: 86 Post-Developed CN: i Impervious Area: 98 I Disturbed Area (Grass, etc.) 90 I Precipitation: I PZ: 2.0 inches P,o: 2.9 inches ' P,�; 3.9 inches i ;-� , ' 5197.004 [AS/ca] I __ � D� � � C�ol rvla� . . � T-o��� iqJy;a.� ����;.. G'��; Tr, -o. ; � , � Df=� r- o�� r' S�7errr.:� Gu;�� �,ti,� ..��%� a r;, I�y;, �ov�-,. , I � .� �, f �,r� �l,a� ; �; � � � ' ,; ��� i n;��A : �a -� Ac Yf W Nf W W W ___ N VI M 000 N O O n �/� � [ �/ �'t�,� (:� '-i';. . �Nd aaQ � ��� �� �� n r n (' /�1= C� '' a , �jf TC �c•t��-Y: �_ ��oo S)�«� l��� ��' � G•�o� �,�yuS� � �I ) 6 0 �G��i f-/o,., G�� 0. � 9'/ ( y YG s s) , ' , ,'�/''n 1 � . Cv< < DF�/� (o �- r' r� � �e�-�/ious t���ca = �. %? � G � /�i: ,Pp ; J TmPfJ Vl�vr �?►! n = y. (� ,� 1� � �/1/ ' �/ c> �I �' U 5 E h�.1-� ir�,'n %,�i: � ; , . , . . , j , ('�.. . ��"f, v�•-� �t�c � I � I � � � 1 ! I ,--� � �'' `_� � -� _ ; � ', ,__� ! , � s 6/23/95 Barghausen Engineers page 1 SMURFIT RECYCLING COMPANY STORM DRAINAGE CALCULATION . BASIN SUMMARY BASIN ID: D1 NAME: 2YR\24HR POST-DEV.RUNOFF SBUIi METHODOLOGY TOTAL AREA. . . . . . . : 4 .80 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE. . . . : TYPEIA PERVIOUS AREA PRECIPITATION. . . . : 2 .00 inches AREA. . : 0.72 Acres TIME INTERVAL. . . . : 10. 00 min CN. . . . : 90. 00 TIME OF CONC. . . . . : 6. 00 min IMPERVIOUS AREA ABSTRACTION COEFF: 0.20 AREA. . : 4 . 08 Acres CN. . . . : 98 . 00 PEAK RATE: 1 . 82 cfs VOL: 0. 67 Ac-ft TIME: 480 min BASIN ID: D2 NAME: 10YR\24HR POST-DEV.RUNOFF SBUH METHODOLOGY TOTAL P.REA. . . . . . . : 4 .80 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE. . . . : TYPElA PERVIOUS AREA PRECIPITATION. . . . : 2. 90 inches AREA. . : 0 . 72 Acres TIME INTERVAL. . . . : 10. 00 min CN. . . . : 90 . 00 TIME OF CONC. . . . . : 6. 00 min IMPERVIOUS AREA ABSTRACTION COEFF: 0.20 AREA. . : 4 . 08 Acres CN. . . . . 98 . 00 PEAK RATE: 2 . 75 cfs VOL: 1 . 02 Ac-ft TIME: 480 min ' BASIN ID: D3 NAME: 100YR\24HR POST-DEV.RUNOFF SBUH METHODOLOGY TOTAL AREA. . . . . . . : 4. 80 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE. . . . : TYPElA PERVIOUS AREA PRECIPITATION. . . . : 3. 90 inches AREA. . : 0. 72 Acres TIME INTERVAL. . . . : 10. 00 min CN. . . . : 90. 00 TIME OF CONC. . . . . : 6. 00 min IMPERVIOUS AREA ABSTRACTION COEFF: 0. 20 AREA. . : 4 . 08 Acres CN. . . . . 98 . 00 PEAK RATE: 3 . 79 cfs VOL: 1. 42 Ac-ft TIME: 480 min , ( � 6/23/95 Barqhausen Engineers page 2 SMURFIT RECYCLING COMPANY ' STORM DRAINAGE CALCULATION BASIN SUMMARY BASIN ID: Ul NAME: 2YR\24HR PRE-DEV.RUNOFF SBUH METHODOLOGY TOTAL AREA. . . . . . . : 4 .80 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE. . . . : TYPElA PERVIOUS AREA PRECIPITATION. . . . : 2 . 00 inches AREA. . : 4 .80 Acres TIME INTERVAL. . . . : 10. 00 min CN. . . . : 86. 00 TIME OF CONC. . . . . : 80.53 min IMPERVIOUS AREA ABSTRACTION COEFF: 0.20 AREA. . : 0. 00 Acres CN. . . . . 98 . 00 TcReach - Sheet L: 300. 00 ns: 0. 1500 p2yr: 2 . 00 s: 0. 0020 TcReach - Shallow L: 160. 00 ks: 11. 00 s:0. 0019 PEAK RATE: 0. 37 cfs VOL: 0. 34 Ac-ft TIME: 540 min BASIN ID: U2 NAME: 10YR\24HR PRE-DEV.RUNOFF SBUH METHODOLOGY TOTAL AREA. . . . . . . : 4 . 80 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE. . . . : TYPElA PERVIOUS AREA PRECIPITATION. . . . : 2 .90 inches AREA. . : 4 .80 Acres TIME INTERVAL. . . . : 10. 00 min CN. . . . : 86. 00 TIME OF CONC. . . . . : 80. 53 min IMPERVIOUS AREA ABSTRACTION COEFF: 0. 20 AREA. . : 0. 00 Acres CN. . . . . 98 . 00 TcReach - Sheet L: 300. 00 ns: 0. 1500 p2yr: 2 . 00 s : 0. 0020 TcReach - Shallow L: 160. 00 ks: 11. 00 s: 0. 0019 PEAK RATE: 0 .77 cfs VOL: 0. 63 Ac-ft TIME: 510 min BASIN ID: U3 NAME: 100YR\24HR PRE-DEV.RUNOFF SBUH METHODOLOGY TOTAL AREA. . . . . . . : 4 .80 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE. . . . : TYPEIA PERVIOUS AREA PRECIPITATION. . . . : 3 .90 inches AREA. . : 4 . 80 Acres TIME INTERVAL. . . . : 10. 00 min CN. . . . : 86. 00 TIME OF CONC. . . . . : 80. 53 min IMPERVIOUS AREA ABSTRACTION COEFF: 0.20 AREA. . : 0. 00 Acres CN. . . . . 98 . 00 TcReach - Sheet L: 300. 00 ns: 0. 1500 p2yr: 2. 00 s: 0. 0020 TcReach - Shallow L: 160.00 ks: 11. 00 s: 0. 0019 PEAK 'RATE: 1.28 cfs VOL: 0. 98 Ac-ft TIME: 490 min 6/23/95 Barghausen Engineers page 3 SMURFIT RECYCLING COMPANY • STORM DRAINAGE CALCULATION ____________________________________________________________________ BASIN SUMMARY HASIN ID: W1 NAME: 1/3 2YR\24HR RUNOFF WETPOND SBUH METHODOLOGY TOTAL AREA. . . . . . . : 4 .08 Acres BASEFLOWS: 0. 00 cfs RAINFALL TYPE. . . . : TYPElA PERVIOUS AREA PRECIPITATION. . . . : 0. 67 inches AREA. . : 0. 00 Acres TIME INTERVAL. . . . : 10. 00 min CN. . . . : 90. 00 TIME OF CONC. . . . . : 6. 00 min IMPERVIOUS AREA ABSTRACTION COEFF: 0.20 AREA. . : 4 . 08 Acres CN. . . . : 98 . 00 PEAK RATE: 0. 45 cfs VOL: 0. 16 Ac-ft TIME: 480 min ; _ � ,� � , � � ' � N_I ! 6/23/95 Barghausen Engineers page 4 SMURFIT RECYCLING COMPANY STORM DRAINAGE CALCULATION HYDROGRAPH SIJNIlKARY PEAK TIME VOLUME HYD RUNOFF OF OF Contrib NUM RATE PEAK HYDRO Area cfs min. cf-AcFt Acres _______________________________�_____________ 1 0.370 540 14793 cf 4 .80 2 0.767 510 27480 cf 4 .80 � 3 1. 285 490 42792 cf 4 . 80 4 1.820 480 29138 cf 4 . 80 5 2 . 753 480 44471 cf 4 . 80 � 6 3 .787 480 61667 cf 4. 80 7 0. 180 1450 25378 cf 4 . 80 I 8 0. 5'76 690 40270 Cf 4 . 80 9 1. 270 560 57273 cf 4 . 80 -, ; I `._� , � , , `, � , ' I 1 . � -� . , i --� � � �� � � s 6/23/95 Barghausen Engineers page 5 SMURFIT RECYCLING COMPANY STORM DRAINAGE CALCULATION �_______________________________________________________________�� STORAGE STRUCTURE LIST STORAGE LIST ID No. 1 Description: DETENTION POND&PARKING PONDING 6/23/95 Barghausen Engineers page 6 SMURFIT RECYCLING COMPANY STORM DRATNAGE CALCULATION STAGE STORAGE TABLE CUSTOM STORAGE ID No. 1 Description: DETENTION POND&PARKING PONDING STAGE <----STORAGE---•> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> (ft) ---cf--- --Ac-Ft- (tt) ---cf•-- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-ft- tu==ae=aosesrnaazaeasaaaesaeesasszaeaaeaaas_s__a_a_aoea=eeeee_s__eae=_c__etee____oasaesacezsaaessaeeaa 13.00 0.0000 0.0000 14.10 5462 0.1254 15.20 11836 0.2717 16.30 20744 0.4762 13.10 491.10 0.0113 14.20 6012 0.1380 15.30 12546 0.2880 16.40 21819 0.5009 13.20 982.20 0.0225 14.30 6563 0.1507 15.40 13256 0.3043 96.50 22895 0.5256 13.30 1473 0.0338 14.40 7113 0.1633 15.50 13967 0.3206 16.60 23970 0.5503 13.40 1964 0.0451 14.50 7664 0.1759 15.60 14677 0.3369 16.70 25046 0.5750 13.50 2456 0.0564 14.60 8214 0.1886 15.70 15387 0.3532 16.80 26121 0.5997 73.60 2947 0.0676 14.70 8765 0.2012 15.80 16097 0.3695 16.90 27197 0.6243 13.70 3438 0.0789 14.80 9315 0.2138 15.90 16807 0.3858 17.00 28272 0.6490 13.80 3929 0.0902 14.90 9866 0.2265 16.00 17517 0.4021 93.90 4420 0.1015 15.00 10416 0.2391 16.10 18593 0.4268 14.00 4911 0.1127 15.10 91126 0.2554 16.20 19668 0.4515 6/23/95 Barghausen Engineers page 7 SMURFIT RECYCLING COMPANY STORM DRAINAGE CALCULATION _____________________________________________________________________ DISCHARGE STRUCTURE LIST MULTIPLE ORIFICE ID No. 1 Description: DISCHARGE, STRUCTURE Outlet Elev: 12 . 60 Elev: 10. 60 ft Orifice Diameter: 1. 9014 in. NOTCH WEIR ID No. 2 Description: NOTCH WEIR Weir Length: 1. 0000 ft. Weir height (p) : 3 . 3400 ft. Elevation . 15. 96 ft. Weir Increm: 0 . 10 COMBINATION DISCHARGE ID No. 3 Description: COM. 1&2 Structure: 1. Structure: Structure: 2 Structure: Structure: 6/23/95 Barghausen Engineers page 8 SMURFIT RECYCLING COMPANY . STORM DRAINAGE CALCULATION _=_________________________________--_______________________________ STAGE DISCHARGE TABLE MULTIPLE ORIFICE ID No. 1 , Description: DISCHARGE STRUCTURE Outlet Elev: 12 . 60 Elev: 10. 60 ft Orifice Diameter: 1. 9014 in. STAGE <--DISCHARGE---> STAGF <-•DISCHARGE---> STAGE <--DJSCHARGE---> STAGE <--DISCNARGE---> (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft3 ---cfs-- saaaaeceeaveeee=e=ece=e=eceaaeaoeooeo==cran=ececocceces=ea===c=c=ceeea==a=naeacoaeeo=:aee=oaeeeeao:saema 12.6D 0.0000 13.90 0.1179 15.20 0.1582 16.50 0.1937 12.70 0.0310 14.00 0.1161 15.30 0.1612 16.60 0.1962 12.80 0.0439 14.10 0.1202 75.40 0.7642 16.70 0.1986 12.90 0.0537 14.20 0.1241 15.50 0.16T1 16.80 0.2011 13.00 0.0620 14.30 0.1279 95.60 0.1699 96.90 0.2034 13.10 0.0694 14.40 0.1316 15.70 0.1T27 17.00 0.2058 13.20 0.0760 14.50 0.1352 15.B0 0.7755 17.10 0.2081 13.30 0.0821 14.60 0.1387 15.90 0.1782 17.20 0.2104 13.40 0.0877 14.70 0.1422 16.00 0.1809 17.30 0.2127 13.50 0.0931 14.80 0.1455 16.10 0.1835 17.40 0.2149 13.60 0.0981 14.90 0.1488 16.20 0.1861 17.50 0.2172 13.70 U.1029 15.00 0.1520 16.30 0.1687 13.80 0.1075 15.10 0.1551 16.40 0.1912 1 6/23/95 Barghausen Engineers page 9 SMURFIT RECYCLING COMPANY . STORM DRAINAGE CALCULATION STAGE DISCHARGE TABLE NOTCH WEIR ID No. 2 � Description: NOTCH WEIR , Weir Length: 1. 0000 ft. Weir height (p) : 3 . 3400 ft. Elevation . 15 . 96 ft. Weir Increm: 0 . 10 STAGE <--DISCHARGE---> STAGE <-�DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DlSCHARGE---> (ft) ---cfs-- ------- (ft) ...cfs-- ------- (ft) ---cfs-- ------- (ft) •--cfs-- ------- =--=---===-=====-==-=======-======�======================_==______===____=___=====___=====____=___=_==== 15.96 0.0000 16.40 0.8844 16.90 2.5032 17.40 4.2354 16.00 0.0260 16.50 1.1803 77.00 2.8514 17.50 4.5684 16.10 0.1b74 16.60 1.4942 17.10 3.2010 76.20 0.3692 16.70 1.8216 17.20 3.5497 '16.30 0.6117 16.80 2.1590 17.30 3.8951 6/23/95 Barghausen Engineers page 10 SMURFIT RECYCLING COMPANY STORM DRAINAGE CALCULATION ____________________________________________�________________________ STAGE DISCHARGE TABLE COMBINATION DISCHARGE ID No. 3 Description: COM. 1&2 Structure: 1 Structure: Structure: 2 Structure: Structure: STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> (ft) ---cfs-- ------- (ft) ---cfs-- ------- (fU ---cfs•• ------- (ft) ---cfs-- sasszeeras=ec=assataea:aneeeaasseaaeeeaze==sacsc_cx=e=ae=aasrnz=aaaacccncas=sssscseaceeaoseesacecsa.aec= 12.60 0.0000 13.90 0.7119 15.20 0.1582 16.50 1.3741 12.70 0.0310 14.00 0.1161 15.30 0.1612 16.60 1.6904 12.80 0.0439 14.10 0.1202 15.40 0.1642 16.70 2.0202 12.90 0.0537 74.20 0.1249 15.50 0.1671 16.80 2.3600 13.00 0.0620 14.30 0.1279 15.60 0.1699 16.90 2.7066 13.10 0.0694 14.40 0.1316 15.70 0.1727 17.00 3.0572 13.20 0.0760 14.50 0.1352 15.80 0.1755 17.10 3.4091 13.30 0.0821 14.60 0.1387 15.90 0.1782 17.20 3.7601 13.40 0.0877 14.70 0.1422 16.00 0.2069 77.30 4.1078 13.50 0.0931 14.80 0.1455 16.10 0.3509 17.40 4.4503 13.60 0.0981 14.90 0.1488 16.20 0.5554 17.50 4.7856 13.70 0.1029 15.00 0.1520 16.30 0.8004 13.80 0.1�75 15.10 0.1551 16.40 1.0757 6/23/95 Barghausen Engineers page 11 SMURFIT RECYCLING COMPANY STORM DRAINAGE CALCULATION G___________________________________________________________________ LEVEL POOL TABLE SLTNIlKARY MATCH INfL01J -STO- -DIS- <-PEAK-> STORAGE <--•-----DESCRIPTION---------> (cfs) (cfs) --id- --id- <-STAGE> id VOL (cf) esatsaaaseeaa_e=�sms=raaeasus=aeoes_sasoeee_ea_c_oeesscaeteassa�a==raae.ze 1/2 2YR�24HR ROUTIN .......... 0.18 7.82 1 1 15.96 7 17247.78 ............................. 0.7T 2.75 i 3 16.21 8 19759.97 ............................. 1.28 3.79 1 3 16.47 9 22519.20 II . 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';J:.l%'v�"r'_iC � � ' � ,-,-. 1�l = �• �% f-'��ti�TUJ�r �fiF <<�/�GL ��,r_�� ��i�-'c-.� _ . .'/ w7c f�'T!-� = i�i .'� � I � - � i Trapezoidal Channel Analysis � Design Open Channel - UniPorm flow Worksheet Name : SMURNIT RECYCLING Comment: 240 LF SWALE DSIZING PER D.O. F. CRITERIA Solve For Bottom Width Given Input Data: Left Side Slope. . 3 . U0 : 1 {li : �� i Right Side Slope. 3.U0: 1 (H:� Manning' s n. . . . . . 0 . 350 Channel Slope. . . . 0.0200 ft/' Depth. . . . . . . . . . . . 0. 30 ft Discharge. . . . . . . . 0. 18 cfs Computed I�tesults: Bottom Width. . . . 1 .84 ft �'�E9v�� Velocity. . . . . . . . . 0. 22 fps Flow Area. . . . . . . . 0.82 sP Flow Top Width. . . 3. 64 Ft Wetted Perimeter. 3. 74 ft Critical Depth. . . 0.06 ft Critical Slope. . . 4. 65 ft/ft Froude Number. . . . 0.08 ( flow is Subcritical ) �LEQ�J i�� .S�J�F�4-CE�i2E-f} = 2U o j�3.6�= 728 S•F Open Channel Flow Module, Versi.an 2 . �1 (c ) ].990 Haestad MeL-hods, Inc. * 37 Brookside Rd * Waterbury, Ct 06708 Trapezoidal Channel Analysis � Design Open Channel - UniPorm flow Worksheet Name: SMURFIT RECYCLTNG Comment: 100 LF BIO-SWALE Solve For Depth Given Input Data: Bottom Width. . . . . 8 . 00 ft �'`—AeTv�L YV/DTf� Left Side Slope. . 3 . 00: 1 (H:V) Right Side Slope. 3 . 00: 1 (H:V) Manning's n. . . . . . 0. 350 Channel Slope. . . . 0.0200 ft/ft Discharge. . . . . . . . 0. 18 cfs �— �Z �j 2c � Computed R.esults: Depth. . . . . . . . . . . . 0. 14 Pi: ��cTU�� ���'`� Velocity. . . . . . . . . �. 15 fps Flow Area. . . . . . . . 1 . 16 sf Flow Top Width. . . 8.83 ft Wetted Perimeter. 8. 87 ft CriticaJ. Depth. . . 0. Q2 ft Critical Slope. . . 6 . 14 Pt/ft Froude Number. . . . 0. 08 ( Plow is Subcritical ) �D V/D ED $��bM �lJ7ZFACE �-TLE��4 I /00 ��B� = 800 �T Z �-6TLEfI-7�T� Th`f�-�/ 72��T'z T��. , /2�M 1h/. /,/��M/IV. DFPT FP�E BDA�� 'W s. %2 Z c , � � D./� i 80 � Open Channel I'].ow Modu].e, Version 2. 01 le) ].990 Ha�stad Met-hod9 , I_nc . � 37 T3rook�i.de R.d x� Wal;erbu���� , C1; �6708 a � � l� � ^ //�� � � /�� � \� \ �� � ��� / �j \� � � // �� � \�� � � � / /� �\ � ° � � � � / �� �� :� / / � �� ��� � �� / \� � , � � v} t��; / , � �. � i � � _� � ,� �l / / � -_" . � � � ���` �, � �. � / �`� � �' 4 / �� � � / � ' � � � � � � � " � � � � - i .. .� / �� / g� � �� ( � � / ` � / : ��' / � � - _/ � � ��l � / ,.�' I�� I � / � l � ���� 1 �� / � �,,�1 � � �� I ' ,�� �' l � i �� � �l � � . � � � 1 � '���i �� I � � � '� ��� �� .�` I i��� � I � � � � °" �I�II�� � � I I►� ' � � � J �� � ���� I � �� � � � � I�If I �� I � � I � �I i � � � � � � � �I � � I � I � � � �� � �N : ; \ . i il ���;i� � � � � � , � ,,, � ,,, I I � � � , ,!^� I b I � ��� ��� � � � l T ,�j�T �„i I I � `� � / I'I ���� I �� � � �� � � � �I�i� I � � ., �.� / I �' ��� � � � ��/ � �I �� � I ) � � i � � � . � � i � i �I� I � � � � � � , I � � ��t � � � , �� I �b �' � 41 �� � � � j �� �� � � , �I _�I � b �, � ��� � � � e I i � Ys�R �i �� � �_ �� - --;--------- ._�_._ _� �� �� __._._.__.______._-. �� __ � '�-�. - _ ; _.__------- =---a,��---__ . � _.__._`_-" ___1 � ��_r 3 �� • � ��n Tf'lT"t' I , ��^�. ■.■ ---'$i �"�'��_ � II II I� f 11 11 II 1 9/` a� �1��� � � �`"'��-- \ - \�` �� o- _��`►�ounwo g�7q tir _— _ n"� � -- , �� � � , --}—_.�_— _ � �' tS� ' �--- i �---____=___ , , _____________ , �___—_ —�_��______ _______________________ —��__— —__ ===�—ao zi'==—=—_ _— — "'�—ra sA�---FY �_.�.. �� $ "' 8=r� �` � ffi �`��w tt� � �;, � ' \� , � � -� �� �� �� � � . ! 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'� 1:300,000 � � E� � W a a � � i 0 � � 5 . IX. EROSION/SEDIlViENTATION CONTROL DESIGN ' IX. E1tOSION/SEDIMENTATION CONTROL DESIGN Eroaion and e�tstion cot�nl plans snd cakulations have been sulnnitted to the City �, of Rcnton as a scpnrate suba�tal packsge. Thencforc TESC calculations w�l not be included with tlus re�rnt. '� I � -I i 1 . � � U O A Q z 0 � F � A d �C . Q z 0 � H � w a O � W U � z � � � XI. MAINTENANCE AND OPERATION MAMJAL . � This is a description of the proper maintenance needed for the detentionlwet ponds for this project. The detention and wet ponds within this project are open ponds which will'have a dead water storage depth of approximateiy three to six feet with the possibiliry of live st�rage of approximately two to three feet. To obtain access to the control structure; a 15-foot wide gravel road has been provided. It is necessary to unlock the lid and remove the cover in order W access the catch basins. Once access is obtained into the manhole, it will be necessary to remove the accumulated silt and debris within these s�tructures. The maintenance of this facility, as well as the bottom of the pond and wetpond should occur at least on a bi-annual basis. Inspect/remove any debris that might be deposited before and after the rainy season vr major storms. To remove;sediment from the cells�that have standing water in it, it will �e necessary to pump the water from the ponds. Pumps can be set in the access structures which are iocated between the cell$. A minimum three horse power sized pump should be used to remove the water from the dead storage areas of the pond facility. The pump should be set up to pump from these access manholes and discharge into the biofiltration swale area. It may be necessary to set straw bales within the swale area to keep sedimentation from migrating downstream of this system. A minimum two sets of bales should be included within the bibswale prior to this pump water discharging into the stream. The on-site storm drainage pipe conveyance system will need to be inspected periodically in accordance with the 1990 King Counry Drainage Manual (see attached). Remove any trash, debris, or sedimentation build-up which could block free flow of surface water runoff on an annual basis � as a minimum, as well as in the event of any unusual conditions such as a blockage or flooding conditions. The biofiltration swale will also need scheduled maintenance in accordance with the 1990 King Counry Drainage manual. Trash and debris exceeding one cubic foot per 1,400 square feet of the ditch shall be cleared and removed from the biofiltration swale. All accumulated sediment•which exceeds 20 percent of the design depth, approximately 0.1 feet of accumulated depth shall be removed from the biofiltration swale. Inspection and maintenance of the biofiltration swale should be completed using the same schedule as for the ponds. _ -12- 3313.015 [HPG/tbj KING COUNTY, WASHINGTON, SURI=ACE WATER DESIGN MANUAL MAINTENANCE REQUIREMENTS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES ' NO. 1 - PONDS Malntena�ce Co�ditlons When Malntenance Results Expected Componen! De(ect !a Needed VYhen Malntenance Is Pe�totmed General 7rash& Debris My trash and debris which exoeed 1 Trash and debris cleared lrom sile. cubic foot per 1000 square feet (this is about equal to the amount ot trash it would take W fill up one standard size oNioe garbage can). In gE.�e�el,there should be no visual evidence of dumping, Poisonous My poisonous vegetation which may No danger of poisonous vegetation where Vegetation wnatitute a hazard to County peraon�el County personnel o�the public mlght or!he public. Examples of poisonous normally be. (Coordination with vegetation Uclude: tansy ragwon,poison Seattle/Kng County Health Depanment) oak,stinging nettles,devils club. Pollution OiI,gasoline,�other oonteminants oi No contami�aMs preseni other than a one gallon or mora o�any amount found su�face flim. (Coordination with that cou:d: 1j cause damage 10 plant, Seattle/}Cng County Health DeparlmeM} animal,or ma�ine life;2}constitute a tire hazard;or 3)be tlushed downatream , during rain storms. Unmowed Grass/ H facil�ty is located M private residenUal When mowing is needed,grass/ground Ground Cover aroe,mow(ng is needed when erass cover should be mowed to 2 inches in � exceeds 18 inches i� heigfit. In other height. areas,the general QoHcy is to make the pond site match adjacent ground cover and tarrain as long as there is no interiarenoe with tfie tunction o(the taciliry. Rodent Holes My evidence o1 rodent holes N tacility Is Rodents destroyed and dam or berm acting as a dam or berm,or any evidance repalred. (Coordination with Seattle/ of water pipine through dam or berm via lGng County Fiealth Depariment) rode�t holes. Insecls When inaects such as wsaps and hornats Insects destroyed or removed from site, inteAera with maintenance activities. Tree Growth Tree growtfi does not ellow maintenence T�ees do not hinder malntenance aooess or inferierea with maintenance activities. Se�ectively cuhivate trees such activity(i.e.,slope mowing,sift removal, as alders tor firewood. vacto�ing or equipment movements). H trees are not inte�lering with acoess,leave • trees alone. Side Siopes of Erosion Eroded damago over 2 inchec deep S(opes should be stabiiited by using Pond whe�e cause of dnmape is�till present or appropriate eroslon conuol measure(s); where there is potentiat for continued e.g.,rock►einiorcement, planting ot e�osion. grass,compaction. Storage Area Sediment Ac:cumulated sediment that ezceeds 1096 SedimeM cleaned out to designed pond of tfie designed pond depth, ahape and depth;pond�eseeded if ' neoessary to oontrol erosion. Pond Oikes Serilemants Any part ot dike which has settted 4 Dike should be built back to the design inches bwer than the design elevafion. elevetion. Emerge�cy Rock Miss(ng Or�ly one Isye�oi rock exists above native Replace rocks to design standards. OveAlow/Spillway soil in area tive square feet or larger,or • any exposure ot native soil. A-1 l/g0 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL ' VO. 2 - INFlLTRATION , Malnte�ance Condltlon�VYhen Malntsnwnce Resulta Expscted Compone�t Oslect Is fJ��d�d Whe� Malntenance i� Perlormed General Trash&Oebris See'Po�da'Standard P1o. 1 See'Ponds Standard No. 1 Polsonous See'Ponds' Standard Mo. 1 See'Ponds Standard No. t Vegetation Pollution See'Ponds'Standard No. 1 See'Ponds Standard P1o. 1 Unmowed Grass/ See"Ponds'Standard No. 1 See'Ponds Standard No. 1 Ground Covar Rodent Holes See'Ponds'Standard No. 1 See"Ponds Standa�d No. t Insects See`Ponds`Standard No. 1 See"Po�ds Standard No. 1 Storage Mea Sediment A peroolation test plt or test o}faGlity Sediment is removad and/or facility is indicaies laciliry Is onfy wo�king at 9096 of deaned so that infiltratbn system works its desipned capabilities. acoordi�g to design. �f,eet Cover Sheet oove:!s vislble and has more than Sheet oover repafred or roplaced. (M AP�icable) thres 1 J4inch holes fn it. Sump Flied With My sediment and debtis fil8ng veuH!o Gean out sump to desipn deptfi. Sediment and 1096 ot depth irom sump bottom to Debris (H bottom ot outlet pipe or obstrudinA ilow Applicable) into the connoctor pipe. Filter Bags Filled with Sediment and debris fill ba8 more than Replace fllter bag or�edesign system. SedimeM and 1/2 fuil. Debris .ock Fltera Sediment and By vlsusl inapectiw�Ilrile or no water Replace gravel in�ock fitter. Oebris ilows through filter during heavy rain ' ' storms. A-2 1190 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL NO. 3 - CLOSED DETENTION SYSTEMS (PIPES/TANKS) , Malntena�ce Conditbna When Mal�te�ance Aesuks Ezpscted Component Detect la Nesdsd When M�intenance Is Performed Storape Area Plugged Nr Vents O�e-haH oi the ctoss section o(a vent is Vents iroe oi debris and sediment. WoClced at any poinl with debris and • sadtment. � Debris and l�ccumulated sediment depth exoeeds All sediment and debris removed irom Sadiment 1096 of the diameter of the storage area storage area. 1or 1/2length of storage vauli or any pant depth exeseds 1596 01 diameter. Exampk: 72-inch storage tank would raquire deening whe� sediment reaches depih of 7 i�ches tor more than 1/2 kr�yth o1 tank. Joints Between My cradc allowing material to be All joints between tank/pipe seclio�s a�e Tank/Pipe Section transpoAed into iacility. sealed. . Tank/Pipe Bant My pan ot tank/pipe is bent out of shape Tank/pipe repaired or raplaced to design. Out of Shape more than 10%oi its desJgn shape. Manhole Cove�not in Place Cover is misal�g or only panially in plaoe. Manhole is dosed. Any open manhole requires maintenanoe. Locking Mechanism cannot be ope�ed by one Mechanism opens with proper lools. Mechanism Not maiMenance person with proper tools. Working Bolts into i�ame have less than 1/2 inch ot thread(may not apply to sel(-lodcing Hds). Cover DiHicult fo One mainte�anoe person cannot romove Cover can be�emoved and reinstalled by Remove lid after applying 80 pounds ot lift. intent one maintenance person. is to keep oover lrom sealing oN aooess to malntenance. Ladder fiungs IGng County Satety Office and/or Ladder meets deslgn atanda�ds and Unsate maintenance porson judgos 1ha1 ladder is allowa maintenance persons safe aocess. unsafe duo 10 missing rungs, misalignment, rust,ar cracks. Catch Basins See`Catch Basins'Standard No.5 See`Catch 8asins'Sts�dard No.5 A-3 �� � KING COIJNTY WASHINGTON, SURFACE WATER DESIGN MANUAL � JO. 4 - CONTROL STRUCTURE/FLOW RESTRICTOR Malntenance Condltlona VYhen Malntenance ResuNs Expected Component Defect !a Needed 1Nhen Malntenance Is Periormed General Trash end Debris Distance betwaen debris build-up and Ali trash and debris removed. (Includes bottom of oritice plate is less than 1-1/2 Sediment) 'teet. Structural Damage Structure is not securoly attached to Structure securely attached to wall and manhole wall and ouUet pipe structure outiet pipe. ahould support at Isast 1,000 pounds of up or down pressure. Structure is not in upripht poskion (ellow Structure in cor�ect position. up 10 1096 from plumb). Connections to ouUet pipe are not Connections to outlet pipe are wateAiBht; watertight and show signs oi rust. structu�e repairad or replaced and wo�ks as des(gned, My holes—other than designad holes— Suucture has no holes other ihan in the structure. designed holes. qennout Gato �ameged or Cleanout gate is not wateAight or is Gate Is watertight and works as designed. ' Mtssing missing. ,Gate cannot be moved up and down by Gate moves up and down easily and is one maintenance person. watertight. Chein leading to gate is misslnp or Chain is i�place and works as desiened. damaged. Gate!s rusted over 5096 01 its su�ieoe Gnte ia repaired or reptaced io meet area. design standards. Orifice Pfate Damaped or Control devioe ia not working properly Plate is in plaoe and works as desiened. Missin� due to missing,out ot pleoe,or bent orifice plate. Obstructlons My traah,debris,eediment,or vegetation Plato is lree of all obsiruetions and works blocking the plate, aa designad. Overilow Pipe Obatructions My trash or deb►is blocking (or having Pipe is i�ee of sll obstructions and works the potenttai ot blockinp)the overflow as designed. ' pipe. Manhole See 'Gosed Detentlon Systems'8tandard See`Cbsed �eteMion Systems' Standard No, 3. No.3. Catch Basin See 'Catch 8asins"Standa�d No.5. See'Catch Basins`Standa�d No. 5. A-4 1190 i ICTNG COUNTY, WASHINGTON, SURFACE WATER DESTGN MANUAL NO. 5 - CATCH BASINS , Malntenanee CondlUona When Malnte�ance ResuHs Expeeted Compo�ent Delect Is Nesded When Maintena�ce la Performed General Trash&Debris Trash o�debris ot more than 1/2 cubic No trash or debris located immediafely in (Indudes (001 which is bcatad immediately In lront front of catch basin opening. Sedlme�t) of the calch basin openinp o�is blocking capacity of bastn by more than 109�. � Trash or debris (n the.basin)lhat No irash or debris in 1he catch basin. exoeeds 1/3 the depth irom the boriom ' oi basin to invert oi the lowest pipe into or out oi the basin. . Trash or deb►is in any iniet or out{et pipe Inle1 and outiet pipes Iree o(trash or bbcking more than !/3 ot its height. debris. Dead animals or vegetation ihat could P10 dead animals or vegetation present 0enerate odo�s that would cause within the catch basin. comp�aints or dangerous gases (e.g., methane). Deposlts ot garbage exoeeding t cubic No condition present which wouid attract toot in vc�lume. ar supporf the breeding o1 insects or rodents. , ' Slructural Damsge Corner o!irame extends more than 3/4 Frame is even with curb. �, � to F�ame and/or incfi past curb tace�into the street (i1 Top Slab applicable). i Top slab has holes larger than 2 square Top slab is�ree of holes and cracks. �� inches or cracks wider than 1 j4 inch (intent is to make sure all materiel is running into the basin). Frame not sitting flush on top slab,i.e., Frame is sitting ilush on top slab. separation of moro ihan 3/4 inch ot the irame from the top slab. C�acka i�Basin C,�ecks wider than 1/2 inch and longer Basin replaced or rapaired to design Walis/Bonom than 31eat,any evldence oi soil panicles standards. entering catch basin through�xadcs,or maintenance person judges that atructure is unsound. Gecks wider lhan 1/2 inch and longer No cracks more than 1/4 inch wide at the lhan i fuot et the join!ot any inls:,�o::!!e! ;oirt of inle�;_^•�!!e! ^�^� pipe or any evidonce of soil paAicies enterine catch basi�through cracks. Serilement/ Basin has seriled more than 1 inch or has Sasin replaced or repaired to desien Misaiignment rotated more than 2 inches out oi standards. ....y ��w�,.. Fre Hazard Prese�ce o1 chemicals such es natural No}lammable chemicals present. gas,oil,and gesoline. Vegetation Vegetation�growing across and blockine No vegetation blocking opening to basin. more lhan 1096 ot the basin opening. Vegetation growing in inlet/outlet pipe tJo vegetalion or root growlh present, }o1Ms tfiat is more than six inches tali and less than six inches apan. Pollution Nontlammable chemicals of more than No pollution present other than suriace 1/2 cubic foot per three teet oi basin fiim. length. A-5 ]/90 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL ;JO. 5 - CATCH BASINS (Contlnued) Malntenance Condition�When Ma1Me�ance Re�ults Expectsd Component Delsct Is HMd�d When Maintenawee is Pe�tormed Catch Basin Cove� Cover Not in Place Cover is missing ot only paAiaNy in place. Catch basfn cover is closed. Any opsn catch basin requires maintenanoe. Locking Medunism cao�ot be opsned by one Mechanism opens with proper tools. Mechanism Not maintena�oe person with proper tools. Working Boha into irame have leas than,t/21nch of th�ead. Covsr D1Hicult'o Ons maiManance pc�son cannot remove Cover can be removed by one Remove lid after applying 80 Iba.oi 1iR; intent is maintenance person. kesp oove�irom seafi�p oH sooess to maintenanoe. Ladder Ladder RunBs Ladda�is unsate due to missing rungs, Ladder meets design standards and Unsate misatignmont,rust,aacks,o�sharp allows maintenance person safe access. edpes. Me1al Grates Grate wit`�openin�widor than 7/8 inch. Grate openinBa meet design atandards. (f applicable) Trash and Dobris Trash and debris thai is blocking more Grate lree of trash and deb�is. than 2096 ot grate su�iace. Damaged or G�ate missing or broken member(s)oi Grate is in place and meets design Missing the grate. standards. A-G 1/90 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL NO. 6 - DEBRIS BARRIERS (e.g. Trash Racks) � Malnte�ance Condttlona When M�Intenence Reautts Expscted �I Component Oefect Ia Nsedsd Whe� Malnlenance Is Performsd I General Trash and Debris Trash or debris that Is plugging more Barrier clear to recehre capacity 11ow. than 2096 oi tha opeNngs in the berrier. Metal Damaged/Missin� Bars are beM out of shape moro than 3 Bars In piaoe with no benda more than Bars inchea. 3J4 lnch. Bars are missing or entire barcier is Bars in plaoe a000rding to design. missfng. Bars are loose and rust is causin�5096 , Repalr or repleoe barrier to design deterioration to any part oi barrier, standards. I I <{_� ]/90 KING COUNTY. WASHINGTON, SURFACE WATER DESIGN MANUAL NO. 7 - ENERGY DISSIPATORS , Maintenance Condldom When Malntena�ce ResuHs Expscted Component Osfsct Ia NNd�d When Mdnteowncs Is Performed Ezternal: Fiock Pad Miasing or Moved Only one Iny�er oi�odc exista above native Replace rodcs!o design slandard. Rock soil in area five square feet or larger,or a�y ezposurs of native soil. _ Dispersion Trench Pipe Plugged with Aocumulatsd ssdiment that exoeeds 2096 Pipe deaned/ilushed co that it matches Sedimenl ot the design depth. design. Not Oischarging V�sual evidence of wate�dlscha�einp at Trench must be redesigned or rebullt to Water P�opeAy concent�ated pot�ts ebog trench (normal standard. condition is e'sheet tbw'of water eJo�g trench). Intent is to prevent erosio� damape. � Pe�foretions O�er 1/2 01 petiorations in pipe are pean or replace periorated pipe. Pluflged plupged wlth debris and sediment. Water F'.,wa Out Mainlenanoe peroo�observes water FacEliry musl be rebuiH or redasigned to Top oi'Oisaibuto�` ilowir�p out durinp any storm less than standards. Catch Basl� the dsatgn storm a h le cavaing or appears 1lkaly to cause damage. Reoeiving Area Water in receiving arsa is causing or has No dange�oi Iandsiides. Over-Saturatad potential of causing la�dslide problems. internal: Manhole/Chamber Worn or Demaged Structure dissipadne flow deteriorates to Replace atructuro to design standards. Posts,Baftles, 1/2 0�originai size or any concentrated Sides of Chamber worn spot exceeding one square foot which would make structure unsound. Other Detects Sea'Catch Basins'Standard No.5 See 'Catch Basins'Standard No.5 A-8 1/90 ' KING C4UNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL � NO. 8 - FENCING � Mainteoancs Condftlons When Malntenance Resulls Expeclsd + Component Defect is Ne�ded When Maintenance Is Performed General Missing or 8roken My detect in the fenoe that permits easy Parts in place to provide adequate Parts eniry to n faCility. security. PaAs broken a missing. &oken or missing parts replaced. Eroslon Erosion more than 4 inches high and 12- No opening under the tence that exceeds 18(nches wide pe�mitting an opening 4 inches in height. under a lence. wre Fenoes Onmaged PaAs Posts out ot p�umb mo;e lhan 6 inches. Posts plumb to within t-1/2 lnches. Top rails bent more than 6 inches. Top rail froe ot bends greater than t inch. Any paK oi fence (ncluding posts,top Fence is aligned and meets design ralls,and labric)more than 1 (oot out o! standards. design elignment. Mlasing or loose tension wire. Tension wire in place and hotding tabric. Missf�or looco berbed wire that is Barbed wire in plsoe with (ess than 3/4- cagging more tha�2-1/2 inches between inch sag between posts. posts. Extensio�a�m missing, broken,ar bent . 6clension arm in place with no bends out ot shape more than 1-9/2 inches. Iarger than 3/4 inch. Deteriorated Paint Patt or parts that have a rusting or scaling Structurally adequate posts or pans with or Protective condition that has aHected structurai a uniform protective coating. Coating adequacy. Openinps in Fabric Openines In fabric are such that an 8• No openings in tabric. - inch-diameter batl could fit through. KING COUN7'Y, WASHINGTON, SURFACE WATER DESIGN MANUAL d0. 9 - GATES Malnte�ance CondtUons Wh�o Malnten�nce Reautts Expscted Component Def�ct 1� Ns�d�d When Mal�tsn�ncs Is Performed Genetal Damaped or Missi�g gate or lodcinp devioes. Gates and lodcing devioas in piace. Missing Members ' &oken or misaing hin�es such that pate Hinges Intact and lubed. Gate is working can�ot be easlly opened and dosed by a ireely. malntenanoe person. - Gate is out of plumb more than 6lnches Gate is aligned and venical. and more than 1 foot out ot desipn aUpnment. Mlssinp atretchar bar,stretcher bands, Sfretcher bar,bands,and ties in place. • and ties. Openinps In Fabrlc See'Fencing`Standard No.8 See"Fe�ctng'Standard No.8 A-10 ��� KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL NO. 10 - CONVEYANCE SYSTEMS (Pipes & Dltches) , Maintenance Conditlo�s When Malntenance Reaults Expscted Componeot Defect i: Nesded When Maintenance Is Per(ormed Pipes Sediment 8 Debris Aocumulated sediment that exceeds 20% Pipe cleaned of all sediment and debris. 01 ihe diameter ot the pipe. Vegetatiori Vegetation that�educea 1�ee movemenl ot All vegetatio�removed so water tiows wate�through pipes. treely throuph pipes. Damaged Protective ooati�g 1s damaged; ruat is Pipe repairsd or replaced. caucine mo.ro than 5096 detertoration to any part ot pipe. My dent that decreases the cross section Pipe repaired or repleoed. area oi plpo by more than 20%. Open �itches Trash 8 Oebrfs Trash and debris exoeeds 1 cubic toot Trash and debris cleared trom ditches. . per 1,000 aquaro teet oi ditch and slopes. Sedime�t Accumulated sediment lhat exoaeda 2D96 Ditch cleaned/(lushed of all sediment end of the desig�depth. dabris so that it matches deslgn. Vegetatlo� Vegelation'that reduoas iree movement of Water tlows i�eely lhrough dilchec. water through ditches. Eroalon Damage to See'Ponds`Standatd No. i See 'Ponds'Standerd No. 1 'Slopes Rock Lining Out ot Maintenanoe pe�son can see native soil Replace rocks to design standerd. Plaoe o�Missing (N beneath the rxk lining. Applicable) Catch Saslns See 'Cntch Basins"Stendard No. 5 See'Catch Basins'Standard Afo.5 Debris Barriers See `Oebris Barriers" Standard No. 6 See 'Debris Barciers"Standard No.6 (s.g.,Trash Rack) A-11 1�0 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL ; , JO. 11 - GROUNDS (Landscaping) Maintenance Co�ditlona Wh�n IN�InN�anc� R�auhs Expscted Component O�trct is NMd�d Wh�n Malntenanca i� Perio�med Ge�eral Weeds Wesds prowing in more than 20%of the Weeds p�esant in less than 596 ot the (Nonpolsonous) landscapsd erea (uses and shrubs only}. landscaped area. Safety Huud My p�esenoe of poiwn hry or other No poisonous vepetation present In a polsonous wgstatbn. landscaped area. 7rash or Urier Paper,can,bottlso,lolallinp more than 1 Area dear of lirier. cubic bot witfiin a landscaped area (trees and rhrubs only)of 1,000 square teat. Trees and Shrubs Damaee Umbs or paris o1 treea or shrubs that ara Trees and shruba wiih less than 596 of the 6plit or broken whkh aHect mora than tolal to�iage with split or broken Iimbs. 259G of the total toliaQe of the tree or shrub. Trees or shruba that havo been blown Tree or ahrub in pinoe}ree o1 inJury. down a knocked over. T�ses or shnibs which us not adequately Tree or shrub In place a�d adequately supported or ue kaning ove�,causing supported;�emove any desd or diseased exposure o1 the roots. t�ees, A-12 1� KING COUNT'Y, WASHINGTO•N, SURFACE WATER DESIGN MANUAL � NO. 12 - ACCESS ROADS/EASEMENTS , Malnte�ance Co�dltions When Malntenance Reeults Expscted Component Defect la Nssded When M�intenance Is Pertormed Gene�al Trash and �ebris Trash and debris axoeeds 1 cubic foot Trash and debris cleared from site. per 1,000 square ieet, i.e.,trash and debris would fill up one standard size garbape can. _ BloCked Roadway Dsbris which oould damage vehide tires Roadway froe of debris which could (giass or metal). damage tires. My obstructJons whlch rcduce dearance Roadway overheed clear to 14 ieet hlgh. above road su�isoe to lass ihan 14 teat. My obstructions restricting the axess to Obstruction removed to allow at least a a 1Q to 12-foot widih tor e dtstance of 12-foot acoess. more ihan 12 feef or any point restrictin8 aocess to less than a 10-loot width. Road SuAace Settlement, When eu�y suAace delect exceeds 6 Aoad suAaoe uniformly smooth with no Potholea, Mush fnches in depth and 6 square feet in area, evidenoe ot serilement,pothobs, mush Spcta,Ruts In geneal,any wdaoe defeat which spots,or ruts. hinders,or prevents mafntana�oe aooess. VsAetation in Hoad YVseds growing in!he road su�face that Road su�ace �ree oi weecs taiier tr a� < Su�fece are moro than 6 inches tatl and less than ��^�P� 6 inches apart within a 400-square-toot df68. Shoulders and Erosion Damage Erosbn whhln 1 toot of the roadway more _ .__ __ . __ _ . Ditche6 ihan 6 inches wide and 6 inches deep. the surrounding roac Weeds and &ush Weeds and brush exoeed 18 inches in Weeds and brush cut to 2 incnes ir. height or hinder maintenanoe aooess. halght or cleered In such a way as �o ellow maintenance access. A-13 �� KIN (; Cnt1NTY, �VASNINGTON, SURFACE WATER DESIGN MANUAL RETENTION%DETENTION SUMMARY SHEET , Oevelopment Date Location ENGlNEER DEVELOPER Name Name Firm Firm Address Address Phone P��e • Developed Site acres Number o1 Lots • Nu�er ot Detention Facilities On Site • Deternion prov'ided in regional facility Q Regionai Fac�iiy location � • No detention required � Acceptable receiving waters ' • Downstream Drainage Basins I mmediate MaJor Basin Basin A Basin B Basin C Basin D TOTAL INDIVIDUAL BASIN A B C D Drainage 8asin(sj Onsite Area � Offsite Area Type ot Storage Facility Live Storage Volume Predevelaped Runofl Rate 2 year 10 year Postdeveloped Runoff Rate 100 year 2 year 10 year Developed Q 100 year Type oi Restriction Size of Orifice/Restriction � � Orifice/Restriction Na.1 � No.2 No.3 No.4 No.S -- t/o� � � � ___�.�r.'._ �S6i �,5� .K 'd°�`�#�.'� o . i � ��� � ' � wi a: ���+ .�3�7..�{ • � • c �'}�,�•a f i :tl � �ht ),5�,=`�°•r�F'� �s'k'o + {'.I' +c ,�Y.- .Y'�i'W x S, '� a�7��,,$u. �e* i 1' •.u� i �"� �tY•yR?g�R.. ,�L' .t le.2ir�' �.� &. ;f�.�,.1_fa:"..E �z:.t�,, .��t .:a ea �-M .M. �` �Q �, i 9 a.. 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