Loading...
HomeMy WebLinkAbout02925 - Technical Information Report - Drainage BAIMA & HOLMBERG INC. DRAINAGE REPORT FOR 4.77 COURT -__ _� � s'wP 27-, ��a. � T d1'1� �,� � 2�2s ;� � � May 31, 2000 . ,2�v�F4 2/2/0! REv.rsE�� 4.�z/o 1 t�vc��o �r��.�o� Baima& Holmberg, Inc., Job No. 1�17-006 �rt.�,;:k��.:�-,` ? . r (��1.,,i-1-x. .�. -a - h � a L4`C-'.�,\'d``�'�=�_'A� L " � •`—T/`3 `,� a .._,� i u: ._... '` t'- , ', ;�o } y ', ��`'a7n�.�y� .. `r"'v� Prepared for: �x�;�.�s '��-- � -- -x��ati��_=�� C. Thomas Foster Seattle Mortga`e 64�0 Southcenter Bl��d., Suite 106 Seattle. «'A 98188 ,Z 92� 100 FRONT STREET SOUTH • ISSAQUAH • WASHINGTON • 98027-3817 • (425) 392-0250 • (425) 391-3055 v���i � r( � � nC:,�t�'�,(�� � O� `r _ W; ' G'� � �i �. .. '�UO AV__; � 0( � � '� cat N A O � m ; d�lti�u �A sl�l� k,�..� w�" �y P,S� � ' c.�l:9' rr� r n -r �1 V( ` V f- � '."`"""'+' �� �� �G�, p �+'. R-� r— Z '�'� • �,��""'; ` � � � ` t �'�� �j� C�: ! i �1..��TC?�� � � � � � ;��,�..�� � ; � /�1'�, , r � ( �. r� ' ' , ,J , � ;,, � �; „ ;; ` � �,�, ��;r�,"'�,F`r' ' �, r-.. -.C'1 �' �: C� a . ��'� �d4lA; ;3�211�, ��, � , , , , ` .\ :� .:��� r�t�.�s �- = �; �:,�, Z �. 4N � A, C, � �' M'; � \ \ � `\ .,�� ���� r v> F v ,�� �.t �' ;� �--� '�i r�' `� z`/�_, � ` �` ` ^ r'"� 1` `� .C ;', � � �� � `;� � , � ,,; �,�` ����`` ` �i ,•' r (�i� �� i�; ���T � � � . m � ! � ;, �_; �..\,\���" � �,�,� :::. � � .� �� �' �. . � ��V QUEEN ��� �1V � � �,,� �\ � _ �ii�1!;� c 1��1�� ;, -,.,,II� ` �,� `` .,. .S� _..:'� ---. ........�1(1U[EN'i..�'.. � �r1 •%� y` �`��'� � . . r r � >. i �::M1 . . y .--i.--i i=y� '" ��� ✓� / � ��1 t�0�� J � ��+�' � t'^� � ';� •-, ~. � �� -P a�; rl����i;,.; : r t, ,J� ���� r � {'. ,r:. I. , r ^�^•.,. �-► IQND L �;, -\, ,�� „�:.C'� �� �27 1 �� `' � y^� ""'-( '. } f � .�.,.� � iN� � ��` T � �`" ' �' � �, r � . �...,,......i.�/ 'm ;SHE[i�k;-- �� ;�� ` �t"� m t � I � �� � �:' � ;HCI.T(IN CT t1E ";_,-_ . _� �;"�r� � .��� � ' i � �,.. / ` ��r � ,.; �.� , t,,;� � N i�. r�t:' `�, { f. k �, , � � s �` �� ,. , X� ��. c� ,.,, , y���`.' �'V'' � � s �,,� � _ �`���� �� � :1 #' ` „ TACOMA PL �Nr_;T :��3;�n,rf ,;,���1� ��, \✓ � � "�'` ! u� r oN i' ^ ,,�:ti `? �z :i`—i TncoMn`nv �, � -�,. , � -,�, ��.�� , r_�Q"=N �.� � ;�� s� ti, , ! UNION AV�� i ,13q711 SF.�' r .� � `� U' ASHO �m `,.. � .:urylp,y ��..., '.�,.,�rv �� ... �-- ,fl, �' I' ,� c ' t'^ N 'CI' c" rn ( s, ;.� S 1 . r'"' �^-�"�v, ;: Nf..�"'i �C� �U U � J U U ... , �c'� � '� �..' i-P �.l�i� � }�� �c � �l�a . � . �-1��~ ;ti a � r--`�— — ,�cn ,: � � �t44+,,�.: - �=4 -' '-. 13� i � � �. r N v� CT Nf. 11 1 � . �'_ ;� ' �� c., �1 �, l �: �`��, � ��Q � � S� 'q,�a�.7w��tTh�nrr Cr Nf i ��___, l c� ' �' `� � �S�C��dN� ���: art. ``..F j cry���r�'s � � �—+ � '' I � y�� , !;�r ,��: �' � �' � ti'`�,.,: ?k 13�tu F' �V� ;;: 'I I . ..,� : ��, �. �� ,� 9��.�'�'o }-?�,�'' ' j� I �,, �: �a .� �, <; � -Q .;r�,�r n� �aroN� � .-r � ;� , �' v�? , J, �-a : r- '.. = . 136TH � ' i �. �� � ��� _J` ��...,_...�_._�I,�; ;..�..,;,.AV_ SE : �,oa � � f:MFRT� 0 a ` �, ��' �. �� ' �5�,,�t��, ,�, ' (f3RFMfRTON A�V �NF)"�"�""' . •nv ;' �' : � l �,��,� �'�J, � ,'"� N`(� ;;'::I ��c�i�m;l �N I ��O "��`��N � ` �= 1 �m .` I �,� ��s���� ,5� �..._.__,,.....v..�__ 138TH__.j�... � �U,�., s� 1 3 8 T N.A V S E � , i�oT�i s�' , '' _ � � N �! E� ��m � � �i`� (DUVALL:; AV . NE) � � �AV ~S[�z 1 ,�S AV IL�„�.,��-� 139TI1 PL SE (� -`�,� � � ; � ��`J`rT,�' ,n o � `'�� :.� �,, i_....__.. i s � � �S� � {.f'c,�' � �+-� y `'� s � T � � �' : �� ly;yD ^ 1 J �,:.,.�,5,..•y7�' 1-N-� ,� �4�"�' v�11�U[ �., r c., � — -- ; m _ I � � `, ,. "�� .%F'"ti�� � 1A1ST �� � �S � - "' 1� i"' i�, — - s /�� �' �sFt b hZ� _...� `� f,,, I ` ) 1 ,A `� —'-'-1 _'7l ... ,` _ : N �i O� N cn V'1� lt,�i IN G f/1 N �' !���N� � 1�3RD A��SE '�' ��_-�--�-�-s w�� 1� cn a �i s m i c / SF 4...�.�....v....-,.....--� ��........ ��' "'""""'.�_ i m ����! � V�r � 1 , ~��' � `� �' �� "� 1n3R� W � �� 142ND �V SE � \` � ,�e�^ 1 1ao r„ n fo �- '~ -"'-, 4 ► ;� 'pA����� "i I'L�SC °CJ1 � : z 01 -p;(� f � , ` � , ;� , �- ;� 144T�w� �� AU $E � AV SE �z � �s� � ' , , . , 1 ��� � � � � � �� b hi f�;'�� : , �,� � �,,.�, � 144TH �� �_ _ � �� � � �\ � ( ��`'' r'i� �y 1 m��P d��, �� �Q��--,.-.r....._..,w„--.............-.,........,,{,..,. E � \ t� :u � A �\ '1. � J ,1 � -"---•--•._. � , � _ ��� �\ �T'1�'� �; A\ G O �I�JT�'� i\V S�4�\1�'h���� \ �� � \��' 13��4 ,."-....-�....-........� � � � � � r � ...t` -.-."_ --� w ���,`� ;,� �A�A� ,., � 1—� `ra c? �, ��* �`��\�, 1'1_f300 � —`�, � :A. �""i` � 4 �---,...._... �� 2 \�� uJ ��1� � ,�, „ i��Ti� �� se � ,� , �,� �� � � rv � � �,A`o b� �� � --i ,�, ���� �`�� �,� �, �' 1�crH nv s� _`;,��,�� ��; \�",�,� �"\ o0 �, , ,��� � " ��� �i U���" � �`�� . �A���.,�aa �` � \.�. � V�\�� � �A�� �� ��� �AV� .--..-...._cn � �� ��� v �,AA �1�� ����� � �� � A�� �.-.-i\� � ��,� � ���. > �r�- �, „ �,, ,, ,������,����,,,, i���i�f� i� se�«, �«, � � ,� � �, AV SE � ;, �;� ,� �� ��� ,�����.��.`?� �� _ ���y ��TH a , ����,���, A�� .....w�... � q ' �� � `' {�' �S��� A�`"Ci.��� � 1,� � � � , :�.i ��� — �:Y �S _1�17TFI f� ��.�'� `�'�sr_��; � ��;�; � � 9rj� - � �, �-<> � �.___ � ,,� ��,��,��,�� � � � �'�o tif_,I��ri� � �� sr_ � s '�� `,, ���,�,,,\\,\, � � !�I/ �� //r,.t ,_�F � �;�,,,���,;„�;,�,:, „� , . _ � ..._......��.__. j_ , , ,� . PROJECT OVERVIEW This project involves subdividing a 4.77-acre parcel into 26 single-famil� residential lots. The site is located along the north side of Northeast 4T Street, in the SE '/4 of Section 10 of Township 23 North, Range 5 East. There are two existing single-family residences that are to be removed. In general, the ground cover in the south portion of the site is lawn/pasture, and the north portion of the site is brushy with an onsite wetland area. The underlying soils are Alderwood. UPSTREAM TRIBUTARY AREA Approximately, 0.40 acres of upstream area drains onto the site. The upstream tributary area is comprised of lawns from single family residences located east and west of the site. There are no apparent drainage problems associated with these upstream flows. LEVEL 1 DRAINAGE ANALYSIS , Two Level-1 downstream drainage analyses have been prepared along this downstream pathway. Barghausen Consulting engineers, Inc prepared a report dated October 1997 for the Highland Market Place Shopping Center and Triad Associated prepared a report dated June 9, 1999 for the Windsong project. The site was visited May 30, 2000 to verify the reports reflect existing conditions. Runoff from the site generally flows south across the site to a drainage ditch located along the north side of Northeast 4ih Street. The drainage ditch flows form east to west and is approximately 2-ft wide and 2-ft deep. The flows are conveyed west to the parcel's west property line where it enters a 12-inch diameter inlet pipe. The storm system continues west approximately 925-feet to the west boundary of Windsong. Then, the runoff is conveyed south approximately 125-feet crossing Northeast 4th Street and discharging into a drainage channel located within King County Wetland number 150. The channel is approximately 10-feet wide and 1-foot deep. From the outlet, the flows continue south in the wetland further than a '/4 of a mile downstream from this project. Along this downstream drainage path, there was not any apparent drainage problems. The proposed storm system consists of the onsite flows being conveyed to an onsite detention/water quality vault and discharging to the storm system along Northeast 4th Street. ��.�. 6' CYCLONE 6+45.44 "�'� �'wpi wnE FENCE o0 a+ . 4 ��o �ce N B8 0'Sb'W .- - + n _ _ _ _ — A i ,� ---- � M � ,'��M6=G, _i i ' -'___'" ``I ��3 4 ` — — �- —— � _ �� ;�u. TRACT�' `A �2 i Iy I ` � / �uFFEx fEMSfTiVE i I A�gywp�� ~` " I � � ��'_ �%b � AREA TRACT`,' ' � t `g •j5, � � MD-3 � I '�-- � 76:5' 16.5 I;/ `�` ' � .... I , � u�- � �', ��-------'": � _2 - �`�� n i P7 �----------- �' "o-s j � ``I I ' � + 1`e---- ---------- � � ` � •a:, 1 � w-y � ,� �,�/ S � X w-e --------- �— — — — — — � � - ` � •,= _ _ � _. _..._s`' \ a ` ! -' n . 0+00 ;2+00�, ao 7+00 'c, 5+16.21 I �� 2 23.94' o ,- � r - - - - - - - - $ .... � .... "15`Y � �, � 3 i ---�� -- .,� j, 14 i `; � . - . , , I I . _- ;,-, . I --- , _ � ,- ----=--L�-;_- � � �� ` — 16 � ``�. � 'k3-------- -..z------�-��"� W ; � � ----- � • -------_�--- ---;--- � -- � I zs _ ,^ � ---- � .m + � i �p Q �,' I ; ,� ` 17 I 8 a � 12.--��- 5� ��a' ' I ; W � + o � I Q= .... I �-• N ♦ /M , I V W � � 8 __-----��-{ -- " r-S.,E,��a `--'" �-aa'soewwc � � � I z �H 11 Ewm�'?_ W o ' a — — -L- — — -- '� �_, "_ �-s- _-- ,� `',;�$ _ I -----' ,-� �;; i `� 19 � i s��� ,6.5 r` � - i I /y9 ,i n I' 1 O �`.7 I '�.' J^ ( ....�4�6 _ � "__'_'__ I 'N�' "' _"20� I �I � "_ "__'____' �'o ' "_ I ' , O O --a.1- --- ' " '�-, PT +4 � ' ,�, , � ,.- , . � _-_ o I ., -------.-=5�- ' _ � ---�s�-- _ _- � + ___ J :� ���J_� _ _ a�2�` � � — —_ ---- --,+oo - l � — — �' --- ___ � S \� --------- I I – - - - � -i� ---- _ — � � , � {I I � Nq15E I � 't,.` S , ��� I ,`� 9 T O I .. I I 22 2 '2•4� ----25-- `;26 � + �, FW I RFBM � ; "" I� ' "' �-', "' __'_'_ � : " � I �_ • _ � � � � �`` a. � � � I � 0 CM � i ' �,, ., i. _ �_ ,�� � ' �` y� � � L ��------- , . � _ , , , `Yi — — — -�_ _--- ' ��-- - - '_-a,-,'^-w,-- _ �- — — ---- ------- ----- _ "" _ �-- -: � - - --------- ' r+fx�ce C='3o.05'-- , - -tz�a�-------------rz'-ca�- '- ----------- � �� 00'12e5 E w_�-42s.m o- - ---- -- . '__DCSANFil�_Sp'_'__" __"__"' . INV.�429.SJ . ____' _"___"_"'_'_' -�------ ��.�o•-----N:E--�TH--$T--- ----------�'---- - � . e- ,,o b ----- ------- - - --------- - ----------- --------- —---�e+s.a�=--Ma�2�^e�s-w= ------- - _ - • — - --- - -, A . -___ '_'_'_' � ___'_""_ �� ""'_'_' _"_"""""_ 2642.Sb' N88'21'09'W(AIEAS.) � � 0 1 � \ � ` Vv i , 1- ' � lJ � � � ; � ., ; � ^;l �;� -. �. , �, ,,� ,;. , � � ;. . �� , . _ �-, J ' i `. . ,. �, , , L �.� , ��. ' � � _._. _ . __ �, � ' � : ,, •. ' _ . ' . �� ! �'�` �.� `,` ,\�`�`� �', �� ; ; , . :,� N� �,Us► s f : . � 9�c ; ' ;; _ � � �� � :`, � , �� ; I '1 � � �\� �t `' � ' ' � �i ..�, . .. � . ' ' ' ' '� �+•Q .� ; ., '. � . •. . �:' ._. � �� ''� . 1�\ \ �'.� _ ��'�C ^;���.�' . E 129,th 'S t i ' ,' , . � ;, 1' \ `��'�.� �, �, � � . � „ ; , ,� t , ��, \ ..... � ,5��. � -, , l . 3 , , . _,� . . ��-. , . .... . , . .. , � , � . . , -- `.�-'��.'� � � � � �.,� ��, . � - � ��_ _ �_ , �� -- .fl� � � 3 �.� � . • . � . � .� � �C'�, �:` � ' . ' . - "� '•• � ��,' � \ -.��; ' � i , � `, _ , ti, \ `�.., '� j \ � ,';1 ', ��``' ' . � ' ; ' . W , + '_, /�..`` ' ' .���.�� � , •� � • , . N �`i � i t� � � � � � � � �i � �., , 1� ' �\, , ' � i\�i 1 �.. .,L)� � � � �\� •�`� ' , •'¢� ' �� �� �, . 1 � •s . E 131st St, � R ; ','1�� � .. , v `• ( ; �� ' , ', -,, � � , ,�, � �! . �, ��c- � �`' . •. `, � �� � . . , `�—/ ; � `� . . � - . , , . . . . . ,, . �c � ,;. .�� , ,. \ �, ,`_� . . .. , ,, , .. , �`� , � ....._. . . � � .� O�,:. ;; , � ; �•' .._ �'� ;� � , �.. ...._....._ �� . � , . , � . � , , , ,.., �, , � . E 1�2nd Sh� \..�.._._ �, � i ; .; t \ \ � L'�_J �i�� � `�... ., ,. �, :� .__. .�_. ._� .,�..,.,- .:,. `... ; ` ( �,` d St.... \ \\ �E I 2 � ��_ � Prirol�RooO �� �` �, , �.. .• � ' i . , � � -•_. . , ._ , � �\ �. � ! 1 I ; , , �... � , � .-•: _. , , ,, � � �, , �. , ` � � , , '� ��. � .., \, l � � � 1 .;. ,� , � , . . ; ..� , .� . . . _ , , , . . , ��. � � ��. ; ► � � � , . ; , � � . , �. � :, . . % , ,` �'� ' � . . .. . � ' �. ' � � '`_ .� ��1`� ' � � .. , _-�� . _----- ' . . . , J ; ... . .. .: - _ . , . , . . .. � �.. � • � .. -- - .. ..., . -.__... � � . , , . ��., c,".:,.:.� � � \� .-.... ! � \`•, ,.. , �.., .... �.---------_. , , � , , , ,��, �. . ._.� �.,�. p . . . . � � Q , ..,:.� � � �,. v, ; . . . . �l r ....._ , , • � ,......... _ ..... '��, 1 � • ' ... u,' . . ... ` '.�. ,� , , �, ' �,�. � t; � .._ ��..,.\\` _.. `� '� �` ,;:. •F a '�, .`� ,. � , ... , � t . ..... ''s \ �; � , � �� ! ... `r i � •' j� ' � '' �, �� ' _ � � � � ' (" '� � I � � ,...i i!rr' . . � , � � �•.:� � ` ..� ' .�. � . �" i �•� ... .'o. ,`\� '�:. ' � � ` ' • �_C r v' � ."` `, .. . . ' � 1 , l� ' � + I 1 � :�r .__ . . � ` ,,� ` j :�9 '�_.../"� p� _ �... i \ � � ' \� , ��• �. .� `•� '`� � 1 I � � . � , ,��• _...._�,., , , . . ;�' . S � , �•�• �i . '� ... i.. � ,: . 2 � E�136th '�t � ;i . � . i� � � , � ._; 3 h i � � � . . . i , ; �.._., � .. .._.. � ' ' .. ,° . . , �•, , • , , , , _ , . „ ._r. -- , . ' E�1 , , � 36th . .r�... SE 3���th� � � �; ��� ' `X.\'1� / \ Y� � �. 1 .,_ � � � � ��� .�►. � I_j ``.\ 1�:\ �_ �� i f.-r+ � ��, f 6- ) � � `� . t I t '� ,,/ � ` �� ,A i . 1 / � ?V����L�;.�, A � ��l'LJ\ � � � � , ( <Q�'�il.b4. \ � �.. 1. : �... . �''i� /-� � � � �a;�Q�.'t�.t� . , . (/�� f �-- I i .i�u1���,11'•.�p�\ � ` \-� r' � i-_- . �� , , ��� • ,, d1 � '�d� �'p .�,} � � �••' J �����1�\y�A��ti � (� � �.. �1,.4' ��I . . �n . . _... 1 y � '�,t ,�'�,E � � /� ,�.i i �1: Q�, • , I li�. , ,�����V��+1 H.CI-t � � . , ' � . ,.1 ' ' ' � � . ,\��.7 - - N I I N � `' LO T ! . O O.zf� O � � ,2Sp- �\ ! • ��� - _ LOT 2 LOT 3 , 2� n �- �m . ' ;q � - KC SP 776 04 RE, . - 7g04l20 66 ,�. � �. . LOT 4 ��a� + °.`�A � . - � � i 13 . $ z4S � �� .N _ � op �ao - - � _ �- ' � o0 P" _.--�� _ P�. r• 3(c o � �03� 8 ' � � � 3 � - Z5 .� � _�a6, - N � iso 300.-¢9 ---... - o. 177± � - � , 0 � � - U') 41 ry . N � � � . ry o� . W �,G. ' > ; '�4 Q ,�1� _ .. ' i o - _ - _ - . o Z . � � . � �OT Z � N . . n '�t , . . . --.. _ ` " � `- _ - A + � � � � � n I�, � � I'i � � �I � - loo± ` n . /�"C' �6 A�� ��. Q-.5, m :.oT I +�, 2• 2� .�S � ���,. � � 67 �0 30 30 3oo.z7 ��3 »o422oso2-a' 0 90 � p �9SSi � �L �oo± ,ry y �_ � - ---_ . . _ � // � 21.1� � ,°� �FM4hij�'o%� /Pd. N� /7� E.s� /d86ss5�irs-4. . . . N. 8 8_ 0-55 W. , : = N:E. 15-23-5 , ' 1� � '� �_ : -,: -� : , � _ � • � _ � . . �_ � f • � It r 1�. ._ . . . � . . " ' �� - n i �. ' \\ � � . �IIR r . •I' � , • � . • �r .�. � � � � . �. . • .. ' ' . � � � � ' � . ���/ i.; �4�� � • ■ ,�; ` �. . . . . ' �. �,� ,. � ( b�i � � •' . ���p . ... . � •� . .� �• ,t'.:: y � I I , � . . ..� . ... ■ • �� ' .r � . .. , '• ° • , +,: . ,�,r. � -1., ` + , .•.,� y - • ��� � . .� � . ;�� .. . . . a r 4 r�.'� r�� a i: • a � . . . , . . .. � . . � �r i �. .�� ��' � � ' ',• • I�`, � � 'K' t .?�� • .�. yk �' � • ... .� , . ' � � , _ . . � :,��� �� r( . . �..�� ,.. ru ti' • •,' • ���'- ;� ���.■ -Y"r II� . . . .,�-� , , ' •,• •� .. - . Jl . • Q • �., . . °..., . . 1 . . . �.;�,. ..°� . . , . . � , . . , . , , . , -� , — . � �. �����. ..�: . ,.��� � • . •■ � • •• a I . r � .: � .,�,;..:» .. . � .■ . • • I ■ , , � � • • . „r, • � • • �� • � .. . . . , _ ,. .. .• ■....m " , . ` ■ • -11• : _ • . � � „ ( ' � _ - u 'll S - . ' ' / . U . '_... .... �• , � II • ' ——_� _--=---* .... ., � „■ , ;:� �� � . , f. -- �` � �r �• •t�• • • � r ' � � � _—___ �— . .\\ ^ —1f � � � , _ �\ Q � � � • �: � ��� �� ' � � r;� � • �� . � ��'i ..� � ; I� .. .. • � . • � ��. '+ ` , • � „. ■ f�,; 's :�'.''9 � I� I , . : � ,. ;. ,.,., .. w : U ; . 9 � ��. .. .- • 4� l� t � y�/�- y . . � ,� � ��.4+! . -.t ...:. k .� .: u �: � .tl ■ 1 J 9 . • a, r 5 ,..a , � � .�Y,.:; �I. � ' ', . ' '.' ' ���. . . . . �. . �:, • , � i. .. ...: ..�. � r ..�. r ., : . , . . . . • ., � ,�. a,' �� I � � � . . , : . •. � . � , •� � �. �� ��� •I' • � . . •� � ��� � � • � . • ��1•': • .r .. I ''M � ' - ' � y ' • • � • I ■ � .. . . � � .. , I • �• • � � • ■ • • ����/ • � � .� ���� � . . ■. . ^f f .� N ' � � 5' II � � �� � � � �.�� � ' 'I ' ' ' o ' ;; :. �; � : . ' ,. u I . � . � � ' , : • m • . : �.�i � m , . � II • ' � •> `II �D �' I � �1 b � W ►' � , . � .... . �:,n � m ' � . m ,�'� : . ., i► � . . , • . p�p • � • i� � Q � •� ., I ,• . � � ,. . • ,..' i, ,: ' . ' . . : . . .. ,,.... • .,, ... . ... � ..• . -� 'y� . . , '• .• . ..; •...... � , . .... . . ... . . : �... ,, . . . . . . �. , ; .., . • . ..... . ...• :.. ..... . . • � � . . ., - - . � � • N � � • . � • � , • ■ • ����• �' � •r�����r �' �c . • ■ • � •. � '' • � � • •'. • .. . •.• ..�. . • \ \��� � ' � • � • • • •���• � � • •�II�� � � • . , ■ + /l: \� ��� 1'� ' � � \ � • r • � • . � : � �"� � m � '/ •. \�� • ( ■ • ' • � II =_ • F . > — r ■ • • :. � � • , � ' ' �■� ■�� • • . ��..: ,•,'. � . •' j < • � • ' n.. m • �.. - � • �� . .... •.. .. . , ,' . '" ' . . •�—! , . �� ',m . m ' . �','♦ ••���,.�� . .. .... • • • _ II � • m ` � ••■ • •, ; � � �� . W , .:, • ' `'� � / � • � • • ` • • •1, � � ■ . „ ■,' �� � • � .�/�• =' • s■— . . •• ■ • • �.�. •—� . • �� �♦ . . ___ - �-.�� � -� a M U �� � • �' ■ �� r ■■ �� •�• . f,,.:.���• �� • �� � I • Y • � � � �� • � � �� • ••�`' �i . •� 'I '�� .� .. . � �, .�: � � ���• � � ��� , I C ,. , . • �r 1 ` • • .[ lJ • • � � � _ __ �_'� " � ' . , • G. • \ � � / � ■ � � � . . .. � •��, • � • � � . • Q . I 1 • � D � . .� . � .. ,. .< . • � '.� • � F ♦� : * �� . � .� . I I No , _• . • ,. / � v• � Z `t ''_' ` � t , / / • . / � ro / . �Ai t !. f� i ., r . / � ,�.,1 � f . ..�.,,...,,.,.., ...,.�..... �'; .,. Kr„b.,,. M�,...«...... ,�.,...,...�.-....«,.J...,.,...+: ,._....�.��-°" �--�__ w ' ` .� � .. ..............�...,�....W,.�..... � .�......» � + �M! _� ' S�/ • , `�, r ,.� //��� _ ).....,... �....�.-. � � � �/� � S ,,��,f�i»/�'�`�.�\ �� • � � � ,_� 1 ' / � . i . i p .�, �+ . �� , .._.._......�.r..,......a.+..+.+.,+....,..n4.. w,^.�...c�....+ }':�Y •j � �'� i � . /���;r�i �\ , . . , � _. • . • � � ,i�� �..... . - � � ... "�'a"'.��I,�. .r _% 1 '.` �_ • J • � • ,�• .��� .,;.�. 1`• p ,� ■ i ■ � a ` . � � . ,��. o ' ' . a u ` � � � r.� rj_' Qt� ' � MY� /� . . � --... � .,a .�.,� F � � cy . f'-•--�--- � � >.,.., .�,»..,, �''. '..^ ; . . • ; �`� � ,4 �� � � ► " _ ...� - � � � � �'' . ..:,� ... � ■ i � • � t 's �*. ,.,, � t y `� l. � ' " ; • � " , f � „�.�.�.w �..;,.:,w,,.,....��� �:;�.a� — _�� , . . � • . . .. . .� � , �. , . ,_.. ..�. � � � � ■ i � � � I`�l j �r,�.+W�� )Mi�v�nwF"+I�����M.i �"[��� . . � / • �. . • . . . .1 ....�1.�f � :,;T .. .;:�.�,r.�..�.:;' • Y �... _ I T-- �_� • ■� • � ■ :i.+. �' 1 • ■ � � • � / • . ��1� MMwNryy��tiwHl✓q�W 1 .�MW . �d ' ' i , � , �' 1. d! 5 ,���r–� � i � • � � „ �\ _, I �wr,� c�1 \ .' ' � �� . . •n • , '' ....—�. � �• ■ •)� � W✓� ., �+14 . ..� . . <<c� �� ` , � �._,�._..�. V � r::_ ��..;,,���� wM�.....9: �,'`-:,.' f .... 1� 1 ,■ � (n ! I ,' .-•�� � . :;. �. \ • " ' � � `� E ���, i � ■ � • �. � � �� �-.......w..... • � � ;:� �'` \� _J_--___ . , � . �. , g , ,� � ``�" ,�.. ,, • , . . ... • � . �I/ � +w�r�w.r . w�ww� ' �+.w�yMw��e�i�rv.n�.� ..M. �.wAwFwiMn�+l' iR1.WwpM uw'+�(. ���� .,' f. �/ � ■ • :�.w�. ■ ■x.�w+,-. nr � ��' � ' .� .. �y .YFr�wn, J O�� I � �YYr� �( �� �---�: �. .,` � : � . . 3� 3/1 t�� ,�.ti...J' ` �., ,.,:,� �..�. .,�C�,::. ,9) . � . . . . ;�, . � ; � �, o . � � /--�` , �,� • . • �: ` , , � �; � � ..r.R.�....�.,...r,....;.......�.r......�........... ..�....r..,r - , �.�., � ar�- �,,.��.l Si � • . � � ° �� , � ��` ,�- r ,.J��' ; � � � f a '""`"'� "".. . t ..,�.... Ie ,, Cr..-. .�� �.,f;,.,. � � , �� " � �� . � �J �'� 7 1V• "'+^� �:' � I .• �MhM..w�'MwVrwY�r'YxYW.r�T� �_ � ��� � ..'�. � t '� .\ � • � ._..� �— . . .�,{ . ��„r"'w...n,,..w,d �,� �+'" ' ��� J.: .:/,�;��//� ) -7 _ �.�k ���— . (� ;. ,»�•.. .--�-�-�`� � ,ti i : 1 / -� ��,. � I • • , � �../. �==��0 , .�j � ;f ( I .� . _5� � � � �. . . . .. �, � 1 �,..�........ . ........... ...: .�..., ��� �� � - - ,�/ � •'yuew~�Y�v.►►a1►r•�.. ,.r.,,....�..,............�..............� ti�...,...... . ... ..��.�,««, .f• � 't� �fr'.� �' • � -' a'� ' ' \ . ... . -� ( l+� V I y � �4.. � � � � . ... . I ���y :' I n�'i�''�j1 :. \ � � �� �'.. / � i ` • ■ .. I � ..��i'��.�y� � � � �\ � � �� i....�'� ■ • • a _, • �. �� J � �...�,...�..�...�..., --- - ---=— �, \,l.. o` i._ r' ��' `" � � I /� w.. ���'ti 1� � .. +� � � � ■.. I...�. . '���_' � ' � ��„y� 1 \ O � I � �.r ��'� � � r^'.. 3 O o� � I �, �_...�. _��"~ ` ^� 9�' `� �``:. (� ��:,. , � � U .��/�' ' . '. !r� ) r ';� � �� — ) ;L1 .V/: •� ...1 � Mv � � �.` `�� )) / C� � � , � / ��c / � . ,y /{ �f i C / � ' :�� �; '� i � ..��,.h.� � .✓+� �, lr� +�.n.w. �A � / W���f l.A r�,���,\`\�_ / � .0 R7 ,�/, i . _ --. W h�L �. ���� �M�.�. II : '- 0-a5.4a � ro-t -_ C- �D+00 N 8820'St'W wo--t0 :�_ -- _:. - -- 330.54' I — — " OAD ' ' � — — — — ! - -- ; ; --_-------, - i � ; y' �° " �"��� �� �;' �o-i , - ° ���� — —-T — — ,Y '�'.TRACT�'�,A, '� '! � I I ; - �_ �.� , `; �-- � 0 d ,yd '" _ ��� /� ue��cr ' � � !li��J�-//J�. I II :. 'f� _c � .' ; . : ,43 "_'___'_. � , I ,.o'�soe.T '^�' ,�.�/����1,�' � �-------- p I m� Q.5 16.5 `� � ! �J�+' _ / . IV y I ' - � ' —�-�---'' ' no—a ' 2 ., `/ � iI " a¢ _-- -- _ ---------r.o-s '� �3_, 1 � oc --------- �,� -- ? I I _ �� — — -t- — _..s, - 3, \ •_ -- µ 'n _ — � I � � -- '�� �s ._ j NORTH ; � c � � , , .� ._: , , } � , � • � ' ; , , -. � , . :, 4. �-----------, � _._ , I �� I :: � 1 � , ---------- '�; I � ' ` 13 , g a zo 4o eo , , . . . � , , . I I d i`___'_______ ', •I:0'SIOE'M�L`(, � 7 r E1��E�Q�T Q i i ' • � "___�'_'__'" ' �_'___" � � ' ' ' " ---- _ CALE 1 = 80 I t ! . , _- , �----------- -------- S - - - , -- ' 15 � � � r � �""'_'__1__�^'_ „ -_' __"" '_'_" L �� I � ;�_---_--___ -�.��. 4 , p �� _ , _ _ _ , . , , , . , - � , . - . ----------�--- ---1--- �---------- , � � - - , ^ ;� , , , ; "' � � � . . � , � _ . � , . . ,-------- , I .TN '. I . �`,.__________� ________ ' � T . • � .,. '� � � p-------, , ------ ---- - m a— 6 A � � �s oa _ _ .,Q ;n "z• 5 c. . , � � _ � , , � , ` ' " , �� , � , , .. , ,, ; � ', W � : g - �--- , . ; 5 - . � � •-- • � --------- ' ::: .., � . .... I ..-• p I � .`. ' ^ ?W � � � ` i � � - � ♦ � '________'___ • • � H � i � I , r I�i -_ _Q590E'MAGC- ___ �______ _-_ _- `L�____ ___ � �� . , , � � i . . _. \'_._ - "-- , � .�' I S � E�LENT ,, 0. r 90EMALK'_"' r______'____ ' W 'n I � = i� 17 �aT �_ - �.� s — — -� — — �'!� ------- i _. 10 -� ---g-�' � Z - , , _,, . , . , , , � ; .. , � , , -' ( � � , , � - _ � � , Z,, ,21 � ; '--------• ' . _ . � � ,' . : � � ' ---- - . . /- �_ �i L___________� L_�__:____� I I : �� 18 ;/a'' O/8i¢L . , , , ,, , , . , � . , . � ,, ; I `e:1 ' ,' , � I � � r------- -�a-------� �-�'------ 35 ' I .... I r.. ��4p SL\____r____ `_________ r: I � __ d `i��______; _ . � � � `�' ___ �Z8� I �� "_�"___' _- '__ _ � ', � '__� ••____� . , _____ �___ ...�L_ _�t��_�cy�� • �_�T=�__�v � � . ''' :� � -- _ ---; ' -a:so--s�n�nc - -- -----" ` ._� � � - - �9���. — ___ � ' �s�,,r 1esa.rw. ��_�J`�` ;s�'kWTMY- =--i � N--------- -"""_ __ i I --� ---•- _ -_'�,_ � .� __ -�� _ � , o , I ���?FA��T�' ' � � I -- - - ,a'sr+ar�r /_' 1 . � < ; , . ' S(M«EA�T� ;��� ,� e ;p j I I ' '_T'___"__ ,� � . ___ ___ ' ��_____'__ _ -? S Y Do.M/AG� "___' -.., . -,`IJ�-PGMRL7�E [,t,gy(NT, .37 9CEWIlX � . I „ t-�SFIET�T� fL�C.NCS' ' --" _E14.1E2/T` � � � I RFG N0.. E6120407E] j -' �� j ;�c�t�a�o a ons�o?s 24 '�' �; i � � - ��---=---_ _ �2_ 23 � �5 ; , . �, , . . � , , , .� � , . . ;. , � -- - -�� -------- �� ; I IFIXIND R&9M — _ _ — ' _ _y'S�-- -___�_ ' _" "' n�`�i i �5 b122 ' ` T�- ' i ���� �- - - L — �� - - --- - = — — -. � — — — � �- =-`�- �: �� ------ ----- ------- ------ . -.�.:. � _ — ----- ------ . , ------- ------- ------ -- _ . ; -- - --- �- r r+.a-- ----- ------------ -- --- ------=- -� r+�a .- j--------------r c�a oev.r�sos- _------ ----- -g_xe��an_ ----oasiwcaa'-r`------- - �ee�w_ie� 7ar�z�i __ - ro se reo+o� a - -- ------- ---- -- --- Q------- --F2.II0'--- - -- ----_------- � : N.Er �TH -$T-----------a-- --- ----- ------- ----------- ,- - -- ---------- - ----- 2--r+832t`es=w- €;� ' . , - �----------�--- ---------- — — ------------------- TO BE OmICATED 26�2.56' N8821'C9'W (MEAS.) � RIGHT-Of-WAY , JOB BAIMA & HOLMBERG, INC. SHEETNO. OF • 100 Front Steet South ISSAQUAH, WASHINGTON 98027-3817 CALCUUITEDBV DATE (425) 392-0250 FAX (425) 391-3055 CHECKED BY DATE SCALE L7�/f�N�4b� G/�IGC vL� T.FO�lS S�f�?�/�C. /r�// SGffL� �i`f�TDl2 - / o So.�� �l�o�� = AG.v�i26�ioav =7 t��/�%i' 0!���_r�C %,%v�iJ = 7-1LL r�TA� o�/- �1 T!" f�/_'F� = �/- � 7 �C - TDT/�L I�E�LO���� /?�: �/� C Sv13T/2./Y�% J-/,��Gr��/�� A ��FF,�=%1 �i�r������� ��-�,�,� A = /7,sy�fr2 = o.�ro�c =�A/z��=�/ ��-o-�i=y_,� - �f���/�l�T-r/v5 '; ���'/� � .�i1�1-ST . ,�v1�L:�:,.t/�:� � �= C��o "�C3��"J t��o^ )��-a "� f-� �� ")Cl,z"�_f�i�/ '��/v ') -_ �N���F ] ' ���i�t=er� T�, ls/��v.� � Csti£q1 �..__ t L/ :l - JC .2O` ) ' � �/�/���SrS,J f �/fi'-�Cl�-�_ f �I� ;�C/� ~J ' : _ : _ L ��1�c�.� � f�c���-i,� N�r��� : . ; " f�= 3�06 F�` _ ; _._ ,__ . . ' ;_ .. . : -: C .E,rt s r. C�z.��-FL ) _ _ ; I, _ � = r �� j�: ��', �� '�r f' -f I:-;-- - .�- l�;� ._� � �-/rt�!�j ' r :�' _. _ _ ___... _. _ . . .. ' ' . , : , . _� ?-!iTtiJ r���-'�i�/ �'.:��..:'��_ ' ' f� = ='r c� t-� ' '� ��'%c% �7 `- ?8$�GT =. � _ . � f � 2 D. / �}�_ _ �l3G�Y�..� ' �G-✓zff�.�L� ' ` - �f�!/IOvS /�l/� �"/� — l'�2 ri� N �- �� 3� " )(/E� ^� -{ % .a D ^�(.:.r-!> r� �,%� � — 17,s9� F� ` _ �7�0 � �T�= /. s�r,9c ��. l,i��L/1�!'' //'vf"�.E2 �i`��%v/Z� /-� _ �d,3� 1�� - �. /�ff c - /Sy � c = .2, 6S�� =FCO:ti W�'ISnS e SI�:�!sl�S��,�cced��� , JGB BAIMA & HOLMBERG, INC. SHEETNO. OF • 100 Front Steet South ISSAQUAH, WASHINGTON 98027-3817 CAICULATED BY DATE (425) 392-0250 FAX (425) 391-3055 CHECKED BY DATE SCALE =� S Ur�'I/:�i�12�! : .. ' _ 1�.��vs��5 ; : .�/-�P,��i.1=v�s:, ff '---/-�5�/ C�=�.�f=��'G,���s�� �1 = �?-/8�c __ �.. : _ _ A =.��c�S ��'�..;;�"c%��J ' ' _ =� USL/5/C� /TGfLTs ; C Sr_:,�' /�12�%`}/T oc/T� ; _ ; ; Q� :_ D. ;r�"���� ': ' ;_ _ :_� i- 'f r"', ,r �?�_ �/ '�' � _. _ : _ __<... ._....__ ,�t� ._.- �_�1� G �–f _ __ __. _ __ -'. _ . _ :_ : ._ _ ; _ . ' _ I , ' I _ . . , ___ , ' I °R?:11f.7 27it:, _�..._,FS-I,=;CC�C; . sr �� X Flow Frequer.cy Analysis Tim� Series Fi1e:15�7u.tsf Project Location:Sea-Tac ---Anr:uai Peak F1ow Rates--- -----�low Freauer:cy Analysis------- Flow Rate Razk Time of Peak - - Peaks - - RGnk Return Prob (CFS) (CFS) Period 0.311 2 2/09/0'_ 1�:00 0.5?5 Q`v 1 100.00 0. 990 0. 133 7 1/05/02 16:C0 C.3"�1 2 25.00 0.960 0.2&B 3 2/28/03 3:CC 0.288 h 3 10.00 0. 9C0 0. 057 8 8/26/04 2:OG `��� 4 5.00 0.800 0. 166 6 1/GS/05 8:00 0.258 5 3.00 0. 667 0.274 4 1/18/06 16:00 0. 166 6 2.00 0.500 0.258 5 11/24/06 4:00 0.133 Q� 7 1.30 0.231 0.515 1 i/09/08 6:00 0.057 8 1. 10 0.091 Computed Peaks 0.�47 50.00 0. 980 . �x,�-�:c ,�uw n.�c.,.v. 6' - 0+�5.4a �"'� - - �=vC`��0+00 N 8820'S4'W ro-to _- - 330.Ss' `�_"-- — — — —— — OAD ,;� ----- ; ------- — ,_ � x ; ,��=o � ; � � ------ �s. _ i ' r, y - :;;� �, ; "°-2 , - ;' I — — � — — ",`-• ,� ,,�-, r"�' TR A C T�',A ► � __ '; I o o Y � , ,�„ , ', � 1 , ��� ; ,1RE�i► 7��,,,Cr`� � . ; ; I , c � ' � r0-3 -----"'-. i ;�� o�,' � � I �-y9pEy' }� v,',' � ; ----- -- + r.ovET,L mV � i I I ,� OS 16.5}� ,� � � �f � P I .,.. I ' y,a'" � I�� `� _+o-6_=__, wD-i�� � ` ` e II ,� .�K ��\ • ' _, --'--- -��_S /i� �,,,;��..,,,.,` -'- °3_,, � I — _ I ''.�� ~I � `�- -----"'��� � � � � � '/ _ �B "o — — ., : NORTH � � � �° � " , ., . . ,, , . , , , , . . � , ., _._ �� 4, �-----------; , �> . �-------- � � .... I .... 1 � � � � 'i�' ° 13 3 d zo 4o eo I I ,___�_ _ -''`----------= �;:a�� � - , , , , , , s�- . . E4�?E,+T � �� . '_'_' _'_" �' � � �_"'� " � � I , . . -�_---� — ----------- � CALE 1 = 80 , , ` ,,-, , ,� , , , ------------ 15 � � r — — , � � , . ; � , ,�� � � }_--- _ �, . _' . -----}_�_--- ; I � 12"__;" ---- -..��----4�" z _ � — — — , . ; , . '� , � _ . ; ---------�--- i -- ; � ' ; -- ----------� T- , , — — . � � - , 'e . . •--- - , � � , , � � ----------- ' --- � I cN I . �`.__`_________� � l_____ .� • W T +� r' � . . . — . I I '', 1fi � ' ^-----`---- , i in , � • . � , ; . .o � rT------ � u _ i r � � _--� , ,, � ' • . i � � � �-- i , � i � � ' . � � i � � � ', W � , � ; �-- . , , , � � „_ • �---------- ; '; 5 �� , �; . . � �' I �`• � ' ' � � = W . , _ „ _ ,, . � i� I ir-------' . � . . . ` I ' r �' � " � --- _--- � p 0.5'4DEWACII' .C__ 'L__'z �� � �^ r � r _'_ , . I ' O , ' _ • -' ' I �AS�flU'/: ' �3-__--"' ' '__'_'_'__'_ I I � z r'� �� " �F1L4�E.Hiix -------' `� �g — _. __L_ _ — �. ' "'_'_"i' � ., � �O '__6_', st_ Z I � . ;:,- - ' , ;� : ' - -- � , � . ----------= � z,• �s, _ , ,� '�� � � ;!, t; 18-- �_---_----- --_ - ;rNPfizvs�S i , � - ------ , .. , , , . , , I d��` ; ...� , � � ; r--------- - ------- , i I �y I -... �"e i�---- --- �--------- �, ���'���L � � �;.-------- - 9 8 �, --- �`=B� P���S ���- ---� % ! ; � �� _J l�' . ; - ----�� , ' �,/ � , , -""�� �--- ,,,' � ",2 -/�/ , ,. � -_.�r ---s` —,--- ` � • � � '� ?L _ , , .___- . �, , , �-- - - - - - -- - � . � � , � , ,- '_F- a� , , � ,, ,_,. , . , . � � , , � , , --------- ----- �— _--ri=-r�— - — ^ya-- _ _ __ �— �� _--Y_ " ?,r s�nii,wi�-T� � N--------- i _4}d ^` ¢NQi � 1 I `F.ASEYF.YT `1I _� - "-` '_�� 1 � nL,0 /� i I '•MNHACE FI�ENT J -+-_ ' � I �-` 4C s.wiritr � `` `• �. ... �. . ....� --� -'`--- 3a- . . . - : . i I ' ' �„E�E,,�YE„T 1/ .��- � e ` • � II `--=77-PO�IFiF4WE FASF1JQIT _'_ D.30'9DEW.VJC� ��__'_'___ Z• I „ I -� "4�1T� REG lIOS - ,2-- _FA4]f21T i � _ 1 , � ' REC N0. E6120W70T j -" `,� � , � � , � i � , , � ,�npat.w�o ; a e�2 a�au -T i I ' � , c i � , 2 23 �5 ; � ' ' ' . ' '�--- , �• � •- -------- � � - ------- 24 , L -------- --------- : ` I IraHo aceue"' — — — — - '- --_-�_ - --- -- � � �. M:D G➢ ' -_`�` -`� � '� `�i _ _ _�412 , � �, i . . I _"_'_" , . \ � � '-- I — �— — � - — — — — — ''���'_,, ���'�- : — — — ;':�- ------ ---- . ..... — — --- --RF.R�CE= _�=°__-__- —tizi.8�=-- --- "P -__-__-�---_--iz'u�r�rv.szs�5- _'--�--_- -------_ -1iPP J�D EX_t[effStHyy_ �j�- 7 - —�,._('Y-- __'_E�fMIFi2'_p____'__ _ --�-�0 BE i�Y".!�'..G'�2�",..5 -10 BE RE?IObFD � _'_ __'_ _ _' _ ' "__ ' C�J---=----- f2.L�---- - -------- ---- --- �=--- -- EX A N.E--�TH--$T- - a= ,,,. --- ------ ------------- --------------- _° ---- ---------------:_ ----_-���'-_-=���_ _. — — �� ----------- _ , --- ------------- ------------ _ ------- TO BE DmICATED 2642.56' N88'27'09"N(uEAS.) — RIGHT-OF-WAY ��� � A�v� �o � , JOB BAIMA & HOLMBERG� INC. SHEETNO. OF � 100 Front Steet South ISSAQUAH, WASHINGTON 98027-3817 CALCULATEDBY DATE (425) 392-0250 FAX (425) 391-3055 CHECKED BY DATE SCALE - ����oP��� C��/��rrQ�s ; ' _ . . . . _ :.. _ -_ ;___ : , � = �/,3� ,,4� : .. _ :__. _ : . #�` L oTS = 2 S ;___ ; . _ : ____ _ . ` :_ :___ ' v v = 2 s � .s, �Z -� % rf��fi 1z v1"�1t:_ _ �1 ��S' ;. ' , , (��1 ' �/,..? 7. I ' ' ' ;_ : ;___ ' �C�PF./��.iovS ' �R.,�fl = ��`I.� 7�c �C�c�-,�l � == .2.23 �7� _: '1'�1L�.�vs f�R-�.5- _ �`/,3 7 -�-�.3 /fC _= �./-t//�C .. , ' °__ =� S vr�r�'.�2y •" ___ : _ __ - ' 1��'�v-�vs : ._ ��'��'��Td�.s �' ._ ; _ __ : : _ : 14 :- �-/�/�?� ;_ _ � _}� _1,�;,4'�__. :_ . � . _ _ . - _: 2�isz�.r�G /�c�z rs ' �s�� Pr���ro�r� : __ : ___ q� ^ o. �;����s _ : : _': _ �.- � __ _ Q,o � a �., ; c�S __ ;__ � ';_ ' � /. �/C `S ', �__ ; ...__. ;..._ ��� � _ . -_ ._. �sntieSr=L£.:.':=3c'v:�. . 1�� ������� �:��_���' T�'��� � � �ic�, �r����...__�; =�-:a-vs-s Time Series File: 15�7c.tsf Project Location:S2a-Tac ---P.nnual Peak F1ow Rates--- -----�1ow Frequ�n�,✓ Ar.a_1:sis------- Flow Ra:e Rank Time of Peak - - ?eaks - - Rank R2turn Prc� (CFS} (CFS) Period 0.732 5 2/09/O1 2:00 1.51 1 1C0. 00 0. 99� 0.574 8 1/05/02 =6:00 C.3�5 �� 2 25. 00 0. 9oG 0.885 2 2/27/03 7 :00 �� �0 3 10. 00 0. 900 0.596 7 8/2'0/04 2:00 0.7i4 4 5.00 0.800 0.723 6 1C/28/04 16:00 0.732 5 3.00 0. 667 0.77^ 4 1/l�/C6 16:00 0.72 L7 6 2.00 0.500 0.865 3 10/26/C'o 0:00 0. 596 'Z' 7 1.30 0.231 �.51 1 �/09/08 6:CC 0. 57� 8 1. 10 0. 091 �omou}ec Feak� 1.30 50 . 00 �. �80 . JOB BAIMA & HOLMBERG, INC. SHEETNO. OF • 100 Front Steet South ISSAQUAH, WASHINGTON 98027-3817 CALCULATEDBY DATE (425) 392-0250 FAX (425) 391-3055 CHECKED BY DATE SCALE 'I '��T�/�%.�Cif.� �.r-'�_=..G-/:.�/ '_ ' _ . , ,_ ,._ . I ' 'I ' G.��/,�� - ',�— FGOG'-( �G?/�T/-:vL /°F� T/-�� /�y0 !l.C.S-�r/.�-_t� .. ;._ ' — f'l�-�'TGf-/ _f',�����.-c%G,�'.�'!� �..J�-���',�f'�E' pc�,effr-�i5�s �lLo� ' ,. . . ' _._. . ' .�G'�/� '" <� 'f�� t - Y���' ����"' _���='1 s '�.�.�� ?� r,{-��"' ; SD - yE/��P : �E�-1�`l �G�J�1. ' ' ;_ _ ', . =7 _ l�S.�iV 6 �G/?�� C S�'F 1�%�-�/TUvj�? I._ __._ . :. . ; . ' l/fI vL T Z� 'Go,�✓l_ X �-3 r .G-/-z��� X_ 6,SLL�,�' s�v �=� : _: _ i �.,_ _ � �j f"- � _. : ,_ _ ; ,p EC�1�_ r/DLc1f� � , -� f � �:_ '��TT; �' i n ° __ :__ ra�.r,,�c ,�. l /�{_ _�__. ' :_ . ._.__ y �;�= .��� ���.r.� - _ ����, � � � ` - - _ . 2 � _ � . _ __ _ _ ; f�i9.t'li��it'/ f�vSZ%L�� _��`Gr.i1'c��c��/ _ ,z�� ��� � /';G l� r' �' ._ ( _ 2�� ' ' 1 _. _ � _ . ._ _ :_ __ , ..�- __ ° __ 23 _ ��' . ;_ _ _ ; � : � �('� � � 3r�' 1 ( �j(o ' ' � _ . (��� (/1 Pv� _ . . _ _ _ ( `".� '.r.__.�_`--._- , �vl�-j��� �t�2�'� � . Z 3 x �� -r'- I S�� t- q -� �v ' __ = �:t( ���- . _ __ _ , _ _ ._ . �f w��� = c� � ( 2- 5� �- �, � � ' _ _ : — � �( r �-Z��� : � 3�f � t � -r ; ' __ ' : D �G � ?=0��.�?2G.i';S.nqL cieets�2C54 iPe�ktei� KCRTS Level 2 Detention Design Retention/Detention Facility Type of Facility: Detention Vault Facility Length: 265.00 ft Facility Width: 23. 00 ft Facility Area: 6095. sq. ft Effective Storage Depth: 6.50 ft Stage 0 Elevation: 0.00 ft Storage Volume: 39618. cu. ft �Q�� ✓dv�t,rL Riser Head: 6.50 ft Riser Diameter: 18.00 inches Number of orifices: 2 Full Head Pipe Orifice # Height Diameter Discharge Diameter (ft) (in) (CFS) (in} i o.o o i.2 s o.1 o e �3OT'T:'� o��Fl�� 2 4.00 2.06 0.182 6.0 '�jP " Top Notch Weir: None Outflow Rating Curve: None , Stage Elevation Storage Discharge Percolation (ft) (ft) (cu. ft) (ac-ft) (cfs) (cfs) 0.00 0.00 0. 0.000 0.000 0.00 0.01 0.01 61. 0.001 0.005 0.00 0. 03 0.03 183. 0.004 0.007 0.00 0.04 0.09 244. 0.006 0.008 0.00 0.05 0.05 305. 0.007 0.010 a.00 0.07 0.07 427. 0.010 0.011 0. 00 0.08 0.08 488. 0.011 0.012 0.00 0.09 0.09 549. 0.013 0.013 0.00 0.10 0.10 610. 0.014 0.014 0.00 0.21 0.21 1280. 0.029 0.020 0.00 0.32 0.32 1950. 0.045 0.024 0.00 0.43 0.43 2621. 0.060 0.028 0.00 0.54 0.54 3291. 0.076 0.031 0.00 0. 66 0.66 4023. 0.092 0.034 0.00 0.77 0.77 4693. 0.106 0.037 0.00 0.88 0.88 5364. 0.123 0.040 0.00 0.99 0.99 6034. 0. 139 0.042 0.00 1.10 1.10 6705. 0.154 0.044 0.00 1.21 1.21 7375. 0.169 0.047 0.00 1.32 1.32 8045. 0.185 0.049 0.00 1.43 1.43 8716. 0.200 0.051 0.00 1.54 1.54 9386. 0.215 0.053 0.00 1.65 1.65 10057. 0.231 0.054 0.00 1.76 1.76 10727. 0.246 0.056 0.00 1.87 1.87 11398. 0.262 0.058 0. 00 1.98 1.96 12068. 0.277 0. 060 0.00 2.09 2.09 12739. 0.292 0.061 0.00 I 2.20 2.20 13409. 0.308 0.063 0.00 j 2.31 2.31 14�79. 0.323 0. 064 0.00 2.42 2.42 14750. 0.339 0.066 0. 00 � 2.53 2.53 15420. 0.354 0.067 0.00 2.64 2.64 16091. 0.369 0.069 0.00 2.75 2.75 16761. 0.385 0.070 0.00 2.86 2.86 17432. 0.400 0. 072 0.00 2.97 2.97 18102. 0.416 0.073 0.00 3.08 3.08 18773. 0.431 0.074 0.00 3.19 3. 19 19443. 0.446 0.076 0.00 3.30 3.30 20114. 0.462 0.077 0.00 3.41 3.41 20784. 0.477 0.078 0.00 3.52 3.52 21454. 0.493 0.080 0.00 3.63 3.63 22125. 0.508 0.081 0.00 3.74 3.74 22795. 0.523 0.082 0.00 3.85 3.85 23466. 0.539 0.083 0.00 3.96 3.96 24136. 0.554 0.084 0.00 4.00 4.00 24380. 0.560 0.085 0.00 4. 02 4.02 24502. 0.562 0.086 0.00 4.04 4.04 24624. 0.565 0.090 0.00 4.06 4.06 24746. 0.568 0.095 0.00 4.09 4.09 24929. 0.572 0.103 0.00 4.11 4.11 25050. 0.575 0.113 0.00 4. 13 4.13 25172. 0.578 0.124 0.00 4. 15 4.15 25294. 0.581 0.131 0.00 4.17 4.17 25416. 0.583 0.134 0.00 4.28 4.28 26087. 0.599 0. 149 0.00 4.39 4.39 26757. 0.614 0.161 0.00 4.50 4.50 27428. 0.630 0.172 0.00 4.61 4.61 28098. 0.645 0.181 0.00 4.72 4.72 28768. 0. 660 0.190 0.00 4.83 4.83 29439. 0.676 0.198 0.00 4. 94 4.94 30109. 0.691 0.206 0.00 5. 05 5.05 30780. 0.707 0.214 0.00 5. 16 5.16 31450. 0.722 0.221 0.00 5.27 5.27 32121. 0.737 0.228 0.00 5.38 5.38 32791. 0.753 0.234 0.�0 5.49 5.49 33462. 0.768 0.240 0.00 i 5.60 5.60 34132. 0.784 0.246 0.00 5.71 5.71 34802. 0.799 0.252 0.00 5.82 5.82 35473. 0.814 0.258 0.00 5.93 5.93 36143. 0.830 0.264 0.00 � 6.04 6.04 36814. 0.845 0.269 0.00 6.15 6.15 37484. 0.861 0.275 0.00 6.27 6.27 38216. 0.877 0.280 0.00 6.38 6.38 38886. 0. 893 0.265 0.00 6.49 6.49 39557. 0. 908 0.290 0.00 6.50 6.50 39618. 0.909 0.290 0.00 6. 60 6.60 40227. 0.923 0.757 0.00 6.70 6.70 40837. 0.937 1.610 0.00 ' 6.80 6.80 41446. 0. 951 2.700 0.00 6.90 6.90 42056. 0. 965 4.000 0.00 i 7.00 7.00 42665. 0.979 5.480 0.00 7.10 7.10 43275. 0.993 6.910 0.00 7 .20 7.20 43664. 1.007 7.440 0.00 7.30 7.30 44494. 1.021 7. 940 0.00 7.40 7.40 45103. 1. 035 8.400 0.00 7.50 7.50 45713. 1. 049 8.840 0.00 7.60 7.60 46322. 1.063 9.260 0.00 7.70 7.70 46932. 1.077 9.660 0.00 7.80 7.80 47541. 1.091 10.050 0.00 7.90 7.90 48151. 1.105 10.420 0.00 8.00 8.00 48760. 1.119 10.770 0.00 8.10 8.10 49370. 1. 133 11.120 0.00 8.20 8.20 49979. 1.147 11.450 0.00 8.30 8.30 50569. 1.161 11.780 0.00 8.40 8.40 51198. 1.175 12.090 0.00 8.50 8.50 51808. 1.189 12. 400 0.00 Hyd Inflow Outflow Peak Storage Target Calc Stage Elev (Cu-Ft} (Ac-Ft) 1 1.51 ******* 0.95 6.62 6.62 40363. 0.927 2 0. 89 ******* 0.20 4.92 4.92 30001. 0.689 3 0.86 0.29 0.08 3.44 3.44 20960. 0.481 10-yr Q � 4 0.77 ******* 0.20 4.79 4.79 29199. 0.670 5 0.73 ******* 0.28 6.26 6.26 38132. 0.875 6 0.72 0.17 0.06 1.79 1.79 10914. 0.251 2-yr Q�� � 7 0.60 ******* 0.06 2.07 2.07 12607. 0.289 8 0.57 ******* 0.07 3.01 3.01 18371. 0.422 ---------------------------------- Route Time Series through Facility , Inflow Time Series File:l517d.tsf Outflow Time Series File:rdout Inflow/Outflow Analysis Peak Inflow Discharge: 1.51 CFS at 6:00 on Jan 9 in Year 8 Peak Outflow Discharge: 0.948 CFS at 10:00 on Jan 9 in Year 8 Peak Reservoir Stage: 6.62 Ft Peak Reservoir Elev: 6.62 Ft Peak Reservoir Storage: 40363. Cu-Ft . 0.927 Ac-Ft Flow Duration from Time Series File:rdout.tsf Cutoff Count Frequency CDF Exceedence Probability CFS $ $ $ 0.004 36873 60.132 60.132 39.868 0.399E+00 0.012 5123 8.355 68.487 31.513 0.315E+00 0.020 4356 7. 104 75.590 24.410 0.244E+00 0.028 4138 6.748 82.339 17.661 0.177E+00 0.035 3579 5.837 88.175 11.825 0.118E+00 0.043 2448 3.992 92.167 7.833 0.783E-01 0. 051 1541 2.513 94.680 5.320 0.532E-01 0. 059 1133 1.848 96.528 3.472 0.347E-01 0.067 790 1.288 97.B16 2.184 0.218E-01 0.075 553 0.902 98.718 1.282 0.128E-01 0.082 464 0.757 99.475 0.525 0.525E-02 0.090 118 0.192 99.667 0.333 0.333E-02 0.098 11 0.016 99.685 0.315 0.315E-02 0.106 13 0.021 99.706 0.294 0.294E-02 0. 114 6 0.010 99.716 0.264 0.284E-02 0. 122 3 0.005 99.721 0.279 0.279E-02 0.129 7 0.011 99.733 0.267 0.267E-02 0.137 6 0.010 99.742 0.258 0.258E-02 0.145 8 0.013 99.755 0.245 0.245E-02 0. 153 9 0. 015 99.770 0.230 0.230E-02 0.161 13 0.021 99.791 0.209 0.209E-02 0.169 12 0.020 99.811 0.189 0.189E-02 0.176 13 0.021 99.832 0.168 0.168E-02 0.184 15 0.024 99.856 0.144 0.144E-02 0.192 17 0.028 99.684 0.116 0.116E-02 0.200 12 0.020 99.904 0.096 0.962E-03 0.208 10 0.016 99.920 0.080 0.799E-03 0.216 6 0.010 99.930 0.070 0.701E-03 0.224 10 0.016 99.946 0.054 0.538E-03 0.231 7 0.011 99.958 0.042 0.424E-03 0.239 8 0.013 99.971 0.029 0.294E-03 0.247 3 0.005 99.976 0.024 0.245E-03 0.255 3 0.005 99.980 0.020 0.196E-03 0.263 2 0.003 99.984 0.016 0.163E-03 0.271 4 0.007 99.990 0.010 0.978E-04 0.278 4 0.007 99. 997 0.003 0.326E-04 Duration Comparison Anaylsis (RCRTS) Base File: 1517u.tsf New File: rdout.tsf Cutoff Units: Discharge in CFS -----Fraction of Time----- ---------Check of Tolerance------- Cutoff Base New $Change Probability Base New £sChange 0.084 � 0.74E-02 0.40E-02 -46.0 I 0.74E-02 0.084 0.081 -3.5 0.102 � 0.55E-02 0.30E-02 -44.7 I 0.55E-02 0.102 0. 082 -19.0 0.119 l 0.42E-02 0.28E-02 -34.2 I 0.42E-02 0.119 0.084 -29.7 0.137 � 0.32E-02 0.26E-02 -18.6 � 0.32E-02 0.137 0.098 -28.3 0.154 � 0.24E-02 0.23E-02 -4.1 � 0.24E-02 0.154 0.149 -3.2 0.172 I 0. 17E-02 0.18E-02 5.6 � 0.17E-02 0.172 0.176 2.2 0.189 I 0.12E-02 0.13E-02 4.1 I 0.12E-02 0.189 0.191 0.9 0.207 � 0.95E-03 O.BOE-03 -15.5 � 0.95E-03 0.207 0.200 -3.4 0.225 � 0.65E-03 0.54E-03 -17.5 I 0.65E-03 0.225 0.218 -2.7 0.242 � 0.42E-03 0.26E-03 -38.5 � 0.42E-03 0.242 0.231 -4.5 0.260 I 0.20E-03 0.18E-03 -8.3 � 0.20E-03 0.260 0.259 -0.4 0.277 I 0.13E-03 0.49E-04 -62.5 � 0.13E-03 0.277 0.267 -3. 8 0.295 � 0.49E-04 O.00E+00 -100.0 � 0.49E-04 0.295 0.277 -6.0 O Maximum positive excursion = 0.005 cfs ( 2.9$) � � C��� Q K occurring at 0.173 cfs on the Base Data:1517u.tsf and at 0.178 cfs on the New Data:rdout.tsf Maximum negative excursion = 0.046 cfs (-34.9$} occurring at 0.132 cfs on the Base Data:1517u.tsf and at 0.086 cfs on the New Data:rdout.tsf _,. ___ _.. _ ,.y 2 . ��a;.... ._ � /. .. . � : : . ' �,,���;Y��':v h`k�4{$}�`•\��}`�,4\.�. 4,., � ��� ��t ... . ... ��(':"]L�.��,� �.. � � . . . . . . . .. .. . . ...,.._ . . . �,. .�.a�cs...:�.�..r.r.t�a.<a.:� .,,.,.w�..a�e,�,.sux;w> ,........>. ..�..... ..... .... . ............... . .......:.......�.ur.sv ;� � f �!� l:.f� 4 � 'O t;::�: .!�-..�,, ��r���.r{�.I'' ''� � R •,�,�, 'r N� �.r, .�, �� �- :� � "^"�'�.�.y_ :�t "'.�y i . '•,�i`` �E Y�" ��` � � �`.' ,� :N ,�`' � � o `Y;�,>�, £ `�, � ,o w��,.;t ',� � � � > r �.t_. _`'�►„ U ��� '� >: `-' '�'. '€ � � �. I� � � ��_ € � \�'� k 0 N � � � o � � � 1* � `'.�. ,,. ��� .,�� . �. •.�„y,��1. .Q �s..,� .�� .�.� _- -�':�-�;v�� I�C �, �""+n�,�4,,. !k ``�'` I� .,.�, .�,/. � .it. �*,:•. O p\ `�� �O ", ; p \�.. I�£ o � ..., � �� -5 .1� -a �'� ,-3 10 �2 10 �� 10� I� Probabilify Exceedence � • JOB BAIMA & HOLMBERG, INC. SHEETNO. OF ' 100 Front Steet South ISSAQUAH, WASHINGTON 98027-3817 CALCULATEDBY onre (425) 392-0250 FAX (425) 391-3055 CHECKED BY DATE SCALE L-/�T�/, �c�v/�G1 j� d��// -- I��ssc �i,�T�,2 G��,���ry Pt�z Tl�.� :i�9c� �r-.�.s.��; �.�� �� r��i�F,�.�ta�s �4i��� = �-,�3 �c = 9 7, !.3 9 F—r 2 = f}1 P��z�r��s �1/�-�"� = ?.��i A� = 9.3 ��� �� Z c«�..r,r;�A� , _ �,� �p. 1f�L� � � D.�-.SJ�,t� 1 � /� __ :__ ' , /:� ;..__ ;. ___ __ :___ ' � " p ,�/ � � � ' _:_ � � , : ____ ; . :.. :_ � � _ _ . _ __ �/r ; ;�(y � /39��d- t�: t �D.:.�S� 9�, ;�1 �� . �/� _ �/� 33 � �1� ' ' �� ' ;_. � _ �' �/,_ : ' ' _ . _ � =.3 =_ � ; __ . __ __ � _ Cz �( `�/ 337 � 3) /3o�� Fr3_ � � - i - --- , _ , _ _: __ _. _ ' 1�/f�T,�/L ����.��� =7 P���y.rJ� �- , Z r � �/OG�/-/� j�/2v�rL.��l; - �o � �Z S� � �. Z = I 3 r�'�D G� �l3 0!/�� - .:? �� ' �v�� % , � o,5 Gd��'P..o�'i'L7 :___.; -�- — — _ _ �, . _ J � � � ��� _ _ v� � � -� � i � : . : -� — � ,. ��i�� Sfol21��F- �v __ . _ _ _ _ . Sc'�— - r �Tv�_HG� ; : , �1 ' _ , _ =RCD_Ci2U��ISrs?5�±�ts2:i-1(P,91%:i • JOB BAIMA & HOLMBERG, INC. SHEETNo. oF ' 100 Front Steet South ISSAQUAH, WASHINGTON 98027-3817 CALCULATEDBY DATE (425) 392-0250 FAX (425) 391-3055 CHECKED BY DATE SCALE ��5� ��������' :.___ : :___.. . ' . <._..__ i_ �Fv�GoFr� �. '-y,��.lz �r����r Us�Nb �s t�.�,� Tlt��=- 1��- -: , � _ `7 . v5 TN� /���I`.S <<�F ' ���'.�;��'o�i'� ;_ ___ :_ ___ ;__ Q� =: /. v���s . _ _ _ _ . _ _ . /��'��..7 s� = Cc�, ���-�rd �i �l�f-yS'.� �__ _ _. � ^ _ _ .. Sff_ _ ��:�6'_� ����v� _ ��-o�, �T Z � _ , =-? v5� 3 0 ` �i�o� s�v���r�T- Po�vt� : s�+ ��>��..�F�� _ (��i -,� y�-� =.z�.s� �r� ��.:��=:- , ___ : __ : ; _ -, ,.- , _ _ . . . -_-__ _:_ _ __ : . __: ; _ __ :_ ; _ � ___ _. _. ; __ __ _ ''� ; __ _ _ . ;__ I _ : ; _ , ___ " ___ _ i PP7C�JC1�;t��iSi�plE SMetsi NJS-1;PaGa�`; � ��� �� T.�'�; ' . ��1 �'�� P,��:.� ,� S . �. ���� 1.� � .� � �� �� i�i� "r��� _ Flow Frecuen�,� Aza'_ys;_s _iR.e Series Fi1e: 15mir_.tsf Fro-ect Location:Sea-Tac ---Fr.nual Feak �low Rates--- -----F_ow Frequercy Analysis------- Flow RG�e Rank Time of Peak - - Feaks - - Rank Return Pro� (CFS} ;�FS) ?eriod 1.06 6 8/27/O1 1�:CC 3.71 1 1CO.00 0. 990 0.797 8 1/05/02 =5:C0 2.�R 2 25.00 0. 96C 2.�� 2 12/OS/02 �7:1� 1.58 3 1G. 00 0. 900 0. 8�5 7 8/23/04 =4 :30 1.51 � 5. 00 0.80C �.;,8 3 il/'_7/04 5:00 1.33 5 3. 00 0. 667 1.33 S 1C/27/05 10:�5 1.06 Q 6 2.00 0.500 1.51 � 1C/25/C6 22:�5 0.�8 � 7 1.30 0.231 3.71 i 1/09/C8 6:30 0.797 8 1.10 0.091 Computed Feaks 3.30 50.00 C. 930 CONVEYANCE SYSTEM DESIGN . ,106 r S r7 -OiJ C� BAIMA & HOLMBERG, INC. SHEETNO. OF ' 100 Front Steet South ISSAQUAH, WASHINGTON 98027-3817 CALCULATEDBY SKy DATE�� v+ (425) 392-0250 FAX (425) 391•3055 CHECKED BY DATE SCALE LoNvEya.,.EL� SYST�M�( GALG . ' : :__ _ .:.. >.......... _ _ .. ...'... ..__ i S' �r.� ;� _ �. 7� G�s _ !_ ; ....... :_ ;_ �cv _ ,.__ ; \n!a�S� . ;G 4 5 t __ S�f.�1 �iz,,.,p : ' € ; ! ' _ _: GR � `f� ; � _ ' _. _ _ _ __ ,_ _ _... � /*`W ' �'-36 —� - 4-3 q-_ s� ; __._ . ,. _.. , �� _ , _ , .... � ._ 1 S ' A _ _ c6N'sE,cv�,-'rnE, /�,�C,�{ FLov.IT..t% rnlrp ! L3 �' �-- = ¢-, S3 �C. ' . _ F�v w ?N ro G R st q; ._._ ; -- ._ 4,S� q � ._ _ __ ' 4-. ��_�� C3' �r �.�s , = 3, sz cfs NG�i c-�,�t ;�t�L �.lo V?r /�l U___ _ �_:.. _ , �"l P.; >'iZ 4�� 1'� ' _.._.,_ _ _ _ y 3. 6 c.Fs > �. sz � �s (oK � . .. .:._. ... ..'., t .___ �CMAt. . ... . . . . . ; Cu_cic S Y STFr-c �vn� vE v.�ti; c.� : ! S r�sN �,s ' ?- �'� ' �� i /�11,n!. S�:: °s= ,:;�,Z i z " i r��E = U• 6 S % � Fvc L ?' � % C�5 � � '�" �� C..F S (b� � : , ,_ �/ ,/ ' USi�J � t-LO\:J 1"�r,t?'s�•'_ _ .. __ __,_ .._ __ _ _ _ _. ... _ _.;_ __... - - ;__ ...:. ._. _ _ _ ; ,___' _ . � : : : : ; . . _-: : : : : : , � . ; i . _i '._ . : FpCDt.CT 2bb'�Siny4 Snr.hi NJS-I�Pt]�]MI �C V�£G d I�E� � S- �T n.J i��+-�t 5 i aE � i�licon.pks Fiow Fr equency Analysis Time Ser ies File:i 517i�ott.tsf i�2"'v��i:i i.i7i:ai,iGii:Jt'"oi �lu� ---Annual Peak Flow Hates--- -----Flow Fr equency 9nalysis------- i iv�r i1ti�.c i�dlii� iiiii� 'vi i�CdiC i�cai�� i�ulii� 1'�C�.i.it'Ii i�t�Vii �CF�j (CF�j Period 1.�6 6 8;%2"7,!01 18:00 3.7i 1 fnp.p0 0.990 V.I�.JI U j:�llJi�V(.. jJ.\%l% L...`fll {�J.�lV IJ.JI%V 2.48 2 1Zj0$j02 17:15 L58 3 10.00 0.900 U.855 7 8;%23!04 14�30 1.51 4 5.00 U.80U - , � . . -_,.,, , .,:, _ : .,._ l.�JV J l l�1 1 j�ll't a%.\.iV l.UJ �.I al.Vl% t%.11tll 1.33 � l O j 27 i 05 10:45 1.�6 6 2.00 0.500 1.51 4 10;?_5;'06 2��45 0.855 7 1.30 0_231 3.i 1 1 1 j 09j 08 6:30 0.797 8 1.10 0.091 Computed Peaks 3.30 5Q.Q0 0.98U Pa�e 1 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN h1ANUAL FIGURE 4.3.SC HEADSYAT�R DEPTH FOR S�'[007'H I�TERIOR PIPE CULVERTS WITH INLCT CON`I'ROL IB0 10,000 168 s,cco EXAh1PLE �> > �2� t�� ENTRANCETYPE 6. 156 6,000 o•oz i�cnn �s.s �.ery - 6_- o•�zo�r� SQUARE EOGE U':ITH �S4 5,000 6 5' S NEADWALI 4,00a Hw' nw 132 o t�.i 4 ' - 3,000 ��� z.s e.a 5� 4. : . . . i !20 IZ) 2.� T.a � � _�. - 2,C00 (}) 2.2 7.7 - 4.-.. - I IOB 3. � � I - '0 in t�et 3• 96 3• ., PLAt�! �1� � I,000 GROOVE END �VITH eoo ._. _ HEADwAL� 84 - 600 • /—(_� 2.-- -2:�-• '::.' I .' i •• - 500 / � •� , T2 400 � / �\ Z� � � � U300 E.��%f'� N 1.5 I.5 • � i Z N � C � ' 6o v 200 / � � t.5 �. PLAN �Z� z . ? � ;� GROOVE END 0 54 � i a PROJECTING v a � � o � ioo j" z > 4 8 / /c� � . � BO = . ,,.. J Q U // v 60 / W 1.0 I.O _� �'� 42 o N 50 HW ENT�RANCE � �.0 ��� � o �� p SCALE `fYPE W r� � � 9 \ .1. � � ►-- 36 30 (I> �avar� �dpe .iin a .9 J � � ncae.all 3 .9 33 0 a 20 (z) croor��.na.��n a . p W .8 30 / l��oe.all 2 .8 (3!1/ Groo•� .na .8 2 7 / Droj�c�inq IO � . . .7 �- 24 B •7 6 Ta u�� �cot� (2) er (3) Draj�c� 2 I ro�I:on�a��J lo tcai� (��,���n � ut� fl�olqht inClin�O lint t�roup� � 0 and 0 �cal,�a�or rnv�� at .6 3 illv��rot.a. — .6 .6 18 " �. C-, J C FS / �N4K / Q 15 • .5 .J .5 // ��� .____ -_� �� 4.3.5-11 1/90 ' Circular Channel Analysis & Design Solved with Manning' s Equation Open Channel - Uniform flow -;;-;-r-jicn�=�r iv:m: � COtrsrtent : n..,l� r+..V. � r._ .-.b.... i::J1 V G 1'V� A�.�..liQ1 Ll.�.�.11Qi�-iC Given Input Data: r.; .-. � n n r i L1Qt1lCl.Cl . . . . . . . . . . 1 . V V 1l. Slope . . . . . . . . . . . . . 0 . 0065 ft/ft Manning' s n. . . . . . . 0 . 013 r�.-....i 1.. 1 n n G a-. �.C i.:l.l l. . . . . . . . . . . . . � . J V L:. Computed Results : iii Srllar_-n;? . . . , . , . , , � = >i i rrc Velocity. . . . . . . . . . 3 . 66 fps Flow Area. . . . . . . . . 0 . 79 sf • r-+.-= a-: ...-,l T...-.�l. n rr't �i �11t..1L.Ctl LGAJI.il. . . . V . /.� 1 L Percent Full . . . . . . I00 . 00 0 Full Capacity. . . . . 2 . 87 cfs QMAX @. 94D. . . . . . . . 3 . 09 cfs Froude Numb2r. . . . . FULL Open Channel Flow Module, version 2 . 01 (c) 1990 Haestacl Methods, Inc . * 37 BrOOkside Rd * waterbury, Ct 05708