The URL can be used to link to this page

Home My WebLink About03248 - Technical Information Report - Drainage � Cramer Northwest Inc. � � '` ` � J � . . v � Surveyors •Planners•Engineers M R�� i; � iv � � �V _ F . . � . . . . . � -`-''aE� • . ��.�3. . �1 STORM DRAINAGE REPORT GUSTO:^l�i?'S�f?��CE OF � INGRAM SHORT PLAT '! 1413 SHATTUCK AVE S � RENTON, WASHINGTON FOR EARL INGRAM .,�o Kw U�Ca`� 1413 SHATTUCK AVE S �.Q`� �_, '��+��'�' � RENTON, WASHINGTON 98055 ��' �'�'` '�,�:� u� '� �� . �� A y1�f��t q� a• _�S��c1a�R��+' S��v''''-• ��t !�—c7��1 June 16, 2004 �'��' � (. Z(—OS��..,� C.N.I. JOB NO. 2004-018 �"`� Prepared by Larry S. Krueger, P.E. Phone: 253.852.4880 Toll Free: 800.251.0189 Fax: 25�.852.4955 945`N. Central Ave. Suite 104 Kent, WA 98032 Visit Cramer Northwest on the web at http://��w��.cramei-�Iw.com 3 2y8 TABLE OF CONTENTS I. PROJECT OVERVIEW II. CONDITIONS AND REQUIREMENTS SUMMARY III. OFFSITE ANALYSIS IV. RETENTtONIDETENTION ANALYSIS AND DESIGN V. CONVEYANCE SYSTEM ANALYSIS AND DESIGN VI. SPECIAL REPORTS AND STUDIES VII. BASIN AND COMMUNITY PLANS VIII. OTHER PERMITS IX. EROSION/SEDIMENTATION CONTROL DESIGN X. BOND QUANTITIES, FACILITY SUMMARIES AND DECLARATION OF i COVENANT i XI. OPERAT{ONS AND MAINTENANCE MANUAL APPENDIX A OFFSITE ANALYSIS REPORT APPENDIX B RUNOFF CALCULATIONS 1. PROJECT OVERVIEW Existing Conditions: This project is located at 1413 Shattuck Ave South in the City of Renton. It lies along the west side of Shattuck Ave South. The site is approximately 0.34 acres. The site consists of a home, driveway, and the rest in lawn. The existing dra9nage tends to sheet flow from the south to the northeast toward neighboring properties and Shattuck Ave South. Some runoff flows across neighboring properties while the rest flows toward Shattuck Ave South where it enters a public storm system located along the west side of the street. All runoff ultimately reaches the public storm system at the intersection of Shattuck Ave S. and South 14�' Street. The property receives upstream runoff from the properties to the south. The site soils are Beausite Gravelly Sandy Loam (BeC). Proposed Conditions: The project proposes to subdivide the site into three residential lots. Access to the two western lots will be provided via a shared driveway off of Shattuck Ave South, while the eastern Iot will continue to use the existing residential driveway. Roof runoff will be conveyed through downspout dispersion trenches. Shared driveway runoff will be directed to the existing storm system in Shattuck Ave South. All drainage facilities will be designed per the 1990 King County Surface Water Design Manual as adopted by the City of Renton. II. CONDITIONS AND REQUIREMENTS SUMMARY Pretiminary conditions have been provided. The core requirements of the King County Surface Water Design Manua( (KCSWDM) will be provided as follows: Core Requirement#1, Discharge at the Natural Location: The naturat discharge location for this site is along the southern property line and Shattuck Ave South. Runoff will continue to be directed toward these locations. Core Requirement#2, Offsite Analysis: An offsite analysis is provided in Appendix A. i Core Requirement#3, RunofF Control: Flow control is not required for this site because it does not increase the existing runoff by 0.5 cfs or greater. Per Section 1.2.3 of the KCSWDM this project is exempt from runoff control. Please see Appendix B for runoff calculations. Core Requirement#4, Conveyance System: There are no new conveyance systems proposed for this project. Core Requirement#5, ErosionlSedimentation Control: An erosion and sedimentation control plan will be provided at a later date. Some of the elements to be provided are a construction entrance, silt fence, inlet protection, and seeding. Core Requirement#6, Maintenance and Operations: A maintenance and operations manual will be provided at a later date. Core Requirement#7, Financial Guarantees and Liability: The owner will provide this information prior to permit issuance. III. OFFSITE ANALYSIS A Level 1 Offsite Drainage Analysis has been provided in Appendix A. IV. RETENTION/DETENTION ANALYSIS AND DESIGN No retention/detention system is required. Per Section 1.2.3 of the KCSWDM this project is exempt from runoff control. Please see Appendix B for runoff calculations. V. CONVEYANCE SYSTEM ANALYSIS AND DESIGN No conveyance system is proposed other than the thickened edge for the shared driveway to direct runoff to Shattuck Ave South. VI. SPECIAL REPORTS AND STUDIES No special reports or studies are known to exist for this project. VII. BASIN AND COMMUNITY PLANS No basin or community plans are known to exist. VIII. OTHER PERMITS No other permits are known to be required at this time. IX. EROSION/SEDIMENTATION CONTROL DESIGN An erosion and sedimentation control pian will be provided at a later date. Some of the elements to be provided are a construction entrance, silt fence, inlet protection, and seeding. X. BOND QUANTITIES, FACILITY SUMMARIES AND DECLARATION OF COVENANT This information will be provided prior to permit issuance if requested. XI. MAINTENANCE AND OPERATIONS MANUAL A maintenance and operations manual will be provided at a later date. APPENDIX A OFFSITE ANALYSIS REPORT � � LEVEL 1 DRAINAGE ANALYSIS � OF INGRAM SHORT PLAT 1413 SHATTUCK AVE S RENTON, WASHINGTON FOR EARL INGRAM 1413 SHATTUCK AVE S RENTON, WASHINGTON 98055 June 16, 2004 C.N.I. JOB NO. 2004-018 Prepared by Larry S. Krueger, P.E. TABLE OF CONTENTS I. TASK1 STUDY AREA DEFINITION AND MAPS II. TASK 2 RESOURCE REVIEW III. TASK 3 FIELD INSPECTION I'� IV. TASK 4 DRAINAGE SYSTEM DESCRIPTION AND PROBLEM DESCRIPTIONS V. TASK 5 MITIGATION OF EXISTING OR POTENTIAL PROBLEMS TASK1 STUDY AREA DEFINITIQN AND MAPS TASK 1 STUDY AREA DEFINITION This project is located at 1413 Shattuck Ave South in the City of Renton. It lies along the west side of Shattuck Ave South. The site is approximately 0.34 acres. The site consists of a home, driveway, and the rest in lawn. The existing drainage tends to sheet flow from the south to the northeast toward neighboring properties and Shattuck Ave South. Some runoff flows across neighboring properties while the rest flows toward Shattuck Ave South where it enters a public storm system located along the west side of the street. All runoff ultimately reaches the public storm system at the intersection of Shattuck Ave S. and Soutfi 14th Street. The property receives upstream runoff from the properties to the south. MAPS A vicinity map, sensitive areas map, aerial photo, topo map, and offsite drainage map can be found in the proceeding pages. � --�r-T ' '� ,�� '� ' � ,�� "• � � S� � '�,��` ��7�h �� I c �f 7Ch tn . � � � � � � .� `�� 1 � a� l - � � � i �� 8�'E ��' � � . . Y � . 1 Z�� R�nt�n �1 i ll$�e I�I �'i° � � r �� 515 � � � �� ,��- � , . , ��5 � 1�13 SMattu�k A�e S �� 3;' 1 "�'... � r�f .� �rJtfl t � � ! t4 `' � ��M � 'I� � � � rr:..� � � � I � rr�4� � � ,�. � � 17th � ��a � � � �� 4� '� ti,� � S 18th S �� !l�f 1�th �t � � 1�� 1St S � � � � � 3 �' s � �� ti t�,} -��' �1 }s'~'ti � � �t"'L� � �-� I �� I 1413 SH�TTUGI4 A1/E S1 RENTQNr �hFA . I�1ap �lutput � �.�. . � . . INGRAM S ENSITIVE AREAS �I - rv� - 5 F R� �._,.._..�=_ `�:, � 1.46-.,�- - ` _. .. �� =�`� �`� ��Y K 5�_ _--— -� -�7?37[i003�(5 � ---= r-- -_ _ � � - _ -= 7 3i6UU3 -- __- � --T' I 1 1 S �� _ -- -- l23�640135 , 773?601J71U ____ . -- �723766�"lU J13160U1�fU i--- --�------� � ; �: _ ----_� 123i6(1fX13t1� �_ � T2l1600356 _�. ._. _-� _-_ 33�f040'J670 � r--- -F- � 723760;1�l5� � � JZ3i6DD130 %237fi00Z95 ��_ __� � " ',,. - r73J600G35-- � !-- -- � � •,, •.,33�1(M?11500' td ( Y?�7600+,`18 Iw r23�6002t10I ul i +J RWUJ5�5 ; 33d0A01601I �----�- - � 3� ( - --" � I� ---- j � �_�Q r �_ 1 � i � ; � �z3ar�o2us------� - jJ4W076l16 i---------� a Y13i6(1DOfU, _ � � Y ---- ��- r'— --- �23?6UO2t35 � � 3ldJRUi51U� � I U ' --�_---1� 7231600115--^ - � '� 33I0409511 f 33�O�1U?600 i � 7'1li6U00�f5 � � 773760�J2HU � L----- -- � --1---- �� -- � i 3!•tOfU7530, I � ' ►-' �--- --�F i ---t---{ r r_--� � - I�' Y73?fifYJ225 I �-- � � � 33lU�U�539 F-- - -_. ' � 12316lNJJGU� 723i600270 i 33401U�57f1 3S4Ud015Y5 � � � 7237GOOt00 i � � :i3dD�0i580 �---- -72376f1G045 ' ��- r----- � ~ � 33d0i0i56S i �7t3i6lJ0066 723160(1230 I ' � 33�osois55, 33<040iS7i ; I '� �- ' J �340IOf585 •723�600068 � --72316()0255 723?iWd"lU 33�fOdUi550� � r——�2#��OUff50 ., %Z316QD��5 � _��- ---� 7231600070� _J ' � � ' �-_--- _ _ . _----------- _..__.._ ___.__ _.. .---- -------S.19TH_ST:--`--_._.____ _.____ .�______ ._-----._�..---_.�_�___._ ----,i--_----------- , 33�1G40it75-7---T'-----� i ,� ��`; � r---•--�---T i 334040�478� ; � I � ��72�OOD3t1 � I 'i 33dU407ti6 )?2100U3i0 : i i I 33?INU�L07 334tN0��1U � � cn , I � 'Q �, , 33swar��Y �� I 122zwin3o8 i 'w 7[72(x�;1780 � - _ --- -- -- ' q i ? f---.—�,� 12Z1000309---> ' 7"tZ70WJ7YY � t ' Q � f + Q � I j 33RUi01146; , �P —� --`- -�---�Y 12110UU3U! i �121tJG03?3 � 4---�---1 U ' � l772rJ0f1'lyd i i 3340�Ui2t9'i q , �---- -�--:i � ' ___ _� , � j'--- ------� 177700fJ1T0 �3dlJtUi4'16 33�ffMbit�S F- � � , 33•iL�d0139� ` R! y r 3'2710d03�9 tr � I I � � i1 N ,, i q � 7222UOUli4 � �--- � l3iW07155 ' �----`--------=2 � .f�f04U 15U � 1"122LJU318 ' � `I211UJJj'/', r F222I1002d1 I i ___.�� -' �� I I 334UtU?435 1'l17'JC�03�5 !2?100'J316a,-{-� i �c��omK��c..�y ------ 0; 0.0,49rni --1 i --r------ �`�. Legend � Sefucted Features . . �nd�+aod Landslicie Hazatd Drainaye Area Slreets � i Lakesand Lerge RHers 7�n� I___ .�,�y �i�g,wsr . SUeams � �i�-a = +��= � Fbodway �' � 100 Year Fbodpfain -- Patr,eis � SA4 Welland 5R0 5tream � SAo Landslide � �� SAO Coal Nine 1Y C,:2ars�„y � 5A0$eismic �/ C�ma2s,rna,d SAa Erosio� !v`` C.ass 3 ,�_vr.; http://ww�w5.metrokc.gov/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&Client... 6/16/04 , Map Uutput � �5" ' �' ' INGRAM TOPO �— /2320f1LKl2t1 ---. . ___ f2316Dtl5t2 ---_-"= m: ; r�zszaa�Uto : �-_- --- 4.��5�WY I __ -- -�---�i_ . --- - - �334tldU6666=-'' �� =�="�'"�� _ - �� - we _�.. �� .:.�_-.-.-._ . S.'►r1TH 5�.___ -.:-_- = -- -- ; r _,__ - _- � -_ � ; .. ._ _ ; � ,u... �Wy -�z 73 srw» � ' j��a�+��o�rzjrsar�3i� ; �.�itlS1F __ -. - � , s. 2��-^ , , �_� - _.•--l_--� _ --- l?3160UO3tl� 113�6GUi�(U ' — � 1 • '- �� I I r-�---_-�-�._1- �� " 3�41Jd!li670�.. ` � �. 1� I713i600?95I � - ��--� �23i6U0�� ', � r23i600195 � / �/ �� L -�� '�.JY2376tN1035l--- ',� 3�' dL1401500- '`� �'�,i� -`��2:5?6GUi2�� T7376D(J7lH1 W; I ,r f��I� -�� --*-�--- �-- �- ,-�33S�15i3,/' '_3340d0i6G;� ui��'�J ""`�� '�, i �r � / , � E . --i1"�-,4�I2�1 fHlfi ?US -� 4 �� / �334D�iDiEiU6-�� Q��TL31,6UP;WAi-�-�y=� �-- cn r''r�.r'rf ��r��,.f �Y ` �� r��I2316lYJ`fS� tYi ��3j�fUd0151i�is' � �_ U� �_�'r �- {�-- �C! ., Q]� 173?60;11.7 5 �331�1511-�t �� -33�PDQD1fi0U�IL��Tl�ibflOOdS.�.;�1�� /l� C�(101�Bp �,� �� '� � 334U4U753U �''�:�-� �----- ��.r`�-�--�+-��"�s�� ''�p-�t i►- '�.,. � � f �� a`�� `�R"-'`�.;``��la� 1376(X1210~` ��%- �-------��/ � in �T 131 6f1006D3 '`,, �\ t � �. � .i3d0i{Ji535�--- _ i � �7'131,6U(JZ7U �-'' �7 i 33�t'Jd4i5li ---33:t04�9$ ;�{��23�0098 "1�13?�125��j�~� _/'� � f 33d�8U i �`�,7Z3.?600i16�,72316000�5��`� ��-�. �:i4C1SU756� �� -� � �'2376f1U1311 � �340d0��55•'� 334�Ui577 I � ``: �� 33d0iJ�5t35 P73i600f16� —J'2316Q0255 / � I i � �.. 1 � �-�-j �`y,�, fr i �� -��23i6008�� : 123�6UO2#Si i E ��' � T'13ifiU�Jl'0 r� -•._ , � -1- - -- -- --- ,� — ---f � �_ __ L_ _ __ � __ _____ -- --- -S-15TM-ST�. .� _� ' __ ;_ __ ___ __._. r —�—-- � — - -T-- �`ti, _i� ,� �,�. J �S � �: ��, r 33rtUt��2eU '�I �34fMU?4.i�S 33iJ�!i! � �t2?� 2D G^ I ��1 �~�i�1�' � � r334UtU1d�6i `i34U�f0i�f18 y272GOD3G8 � j �.._ 7?2200U2FS0�. i ti. `--�----- - ,� � I i F2?700'J3U9 � �7221QO�1Y4 � � � i � � I i ;/�-s---�_ ,w I � '� � --{� ' ��•. �33At13Ui�46� � y', �---'-�-- ItA, 711F�tlDSU7� '�i227(1DQ71! �� 333�D17d5 fl ': � i �---- I> �-T�-�f --,1- �"'� � ��7212tJOt11IH�J , �i - f � �: 3lBUdU1#2fi 3:iR0i0id'l5 iti j .,� �'� � t22700U270 ', � J � ��Y ?727D003?4 � � - t l3QUR07750 T272fJ()03a4 721204QJ`B..I : �S 33avda�35�u �' � `., � � � :-�- �� t__ cn�- J �;�-�-----� � ,, �'' � ; �---�._.�� _,� � r r � '� 33d0�Ul135 s( i%��7[1UCJ3iSi ;� � � I 334l1d01155 f !1�11GUQ3?7+ %�120UD�tfi Q ' � Y 's 'i f S I � I � 4' , �:; .__ - � � L _ ^th 7222fJfYJ76i f �___--.----�----- �--- -�---� -{ r _ ---- � �_ � __�� _ 1 y�'i 33dOdD7Adi ; 33d�RJi94U f? � � f 33•f04fJ]16U '� tii � ; � � l I,�{—J'2210fJG37`l-�t� i � I217f1fYJ37.��" I } ��— , � _�—�+__ -�_. J �I �- - � - _ - �.I .^l�— .. . � t �'�- y. 33i0dU716`.� ; j ; 33'BOdJ1$45 ��3:3�[WO14R3rt � . 7171C�:1U31U � '�� i �f112lJ�JId3 I �{CJ 2BC1 Kop Cou�Y I � I ' � � �.��ill http://www5.metrokc.gov/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&Client... 6/1 b/04 .lerra�erver image �ounesy �� ur u�.J� - --a- - --- - _ � , ., . . ;. .,.� - i. �n� C! , :,�ac,e _ ._ � , , , ., i _s �� _. �11SG5 �.,, � . ::_�� ;:�tes 13 Jun 20G;: ,��'� �-� e` `� �'�a�� " � a: � �� p ,.�., ' r� �� .,�� ,�� ',,�, � � { � �-. .� .j �.` � �. �:�,:Y ?�" - �� 'p�- � ��_ ..+��`: 4'a , �. � . �9 :, Y�. � �M1 - .� ��, ,'� F �W_�.�A'�"','� �"F '�' ,�"�;.�:- t'1'1�..' . ��I � • . �`,y t• �r�y� ��`��'��.;.!`t �� a'.: . +�,' . . . :< � ' , �. �;�»`. � - s c - ° :��n�.c�'�,.. __�.,e�''�"�'�'� �.�--��+1��._.�lM�'" �� -'� ....��' ,._ m,:fTi- • �_''Il... ��'�,,:.�:" . .,>, . � , . '�+�'�'�''r..`�� x�w*°.a,A�'�;•-• ��.w��"" .. ' .. ., � - ,1'�.. ,..M±rw+�'i!� �x:i/Y""i .T ,. . ..�..' i Y-.^"""" �� ='y t")°' _ � `y� � a...a ...- . � _....�+^"'" ._ S _, :: 'z �✓dt'�y;_`� ,s,z„we_,s..� � a �r" "-�;`^' . � . r�,� . ,,. T �;:,,�.,....�=.` �-p� � F � � > .,-.�--r".�"" .�� ,: �.r.. }�# � �u �� t � �: .�t-- . ,,n�"` _ � �.��.�.�,�� -'"��`.#�"��-��'' ��,��.�y� - �� .� t� � �.�i,�..� �+�.�y. �-_. F � �� - �� _ yy� ,� .�� } � 3 b'� Y� � �, F ,a,. .;� ' �r s �:, � � '� _ �'Rf �Y'"A�.�� '�m - ,. � � k* ti�; . -� .� �. � �� '� � '� 'i � '� �>' r � '� 4" F �y :� r'�r ;�>. � � � ��s� , � tr ' � �_�. � _, �•-'�'� z q � ` 4' � y- _ �1 ��`+fw ,x.,,,, '�'t �`� 7�-�.: � -r'L 1 �. -'~��, ,� f�`-� .. , ax, � � `,i., v�.'.�..T : f '-.z � ,-�i p . �. -� a �x �� .. F . '�� .��' ` �^ . £Ri�i��: T .a �p �� : �,;'i: �'�� a�Ir� St�`�� a. "� ' �.. 'ha..a� s ��'�� i ,�.� a M�� `� �� ' } ,�, � ��ys�d !`- i s��;."tg,�"��## �r..� g .� '�� :e�'".a...�E. �� `£.� ..- ,r� 1�F ,�'3 Sd. - ��L'�V'� d3 �Y� �?'"h'i• - ¢ . i" ... � �� .��r� Y+. _ �� S:'�:l��; ' _ S�. r�`�� } �� _� � �y4�F y c 4 �.. `� A�� '� +� �� `y� �. �,,. i .. -A �, . . .�-�,�i�� i'��r � _,� .. _ �. . � - , - I "� � � � � `.�- �' ,� "; � � -� ` '.� ' ' �] . � ��. � . , 4 � .r�� . � � �� •" t �.� ..,,�F� ,. � � dP �f� . � 1 i� �.: '-�- �'+��P i+Y'R.:.,_. 1'� ''{ ` x � ; �a' S . - , . 1 er ,. . �$�'��'�. � �. �'. � ;'�. Y . � . . ,�'�xr�„� - . �� '' ?�?A'�rx..a.. .: -: - ,��:,�. .. ,:� �� .� � ,,.F�x�$?'�d'i6^�''�' .. g�. ` �`.'s�+..-. � a � a �,'`v�. °.�, �'-s,�� _�.a. �:,�� a�-�' �� k:�-� �;` � ��"• � "� :�e ` � � o `'� �"` �,��_.. 'k� t t�i �'! �w,. :�-e �� - r � a�.t sg�Y �s c � �. 2.. ��y,. � � ��... ; _ � �d �� J� � � - w ` �Y - � � 4b�� + �,�, � �'�' �� N � �.� � "�',�'p � ;' _ '.� � 1 '�'(�� A :�' + �ai �,� F '�fi ; '� �IF�� +�` '� � �x - � '"F g•'+� � i� °s^�i� � _ . ,�a�,`_,� i � '�' - '3..�� _�.� "'�' _,. :+. � u F €r"'�� ':s. _ . ��,5 a- ,- �` ,. � ' � .s. �'� 's'F `= �-Y' - �'� �� .}� T M: � e �,%,� 7 ,..t r ( -: j �"1 �. �y > �{'.,9r�.' ��.:. �i. �.`� � t�..�:`t �Y� �.� ,K�'t7'§zsFq;i'",.; �iY. }' � � p� � . .�.�f i��'�k�,, � iS' i ^^"�� . E' � �� ..� �� 'T. �^� £., � �� f' .�.,y�� ,� i � T ��'�eJ°�� '��}- �".�,. .�' I' � .fr ��`ro�.�� 7.e ... .�.�s�°^�'� _ ��:. �4�� '�sc>=a�s�:.. .��. � � � ietiil�x=�:� 0' 'S0 m 0' � Soyd In��ye courtesy af khe U.S. Geaiogical Surve�. _ ? �! -? i�1 ,^`� ��r;:�� +�,�.��. Terms of Use Privacy Statement http://terraserver.microsoft.com/printimage.aspx?T=4&S=9&X=5593&Y=52573&Z=10&W... 6/16/04 ��' I ) , � i ` I � � I I � I x� � ` �----— ----�J �nru i � i i i ; i ; �� -X—X--*'--K—y� I t. � � 1 � � M '�--- — i ' i 1 � � � � � i � ' i � i � � .�E pt9 �� a � � � � � � � � 1 � �� f � � i ( I I � � i I h � ` � � � < I� J ___�_ yAGATEO � � ' 1 � i P5' � �� II� �� 3 : � - - - �-- ----------; � gN� • �Y � �� i L----- � � Y S.P.OQ9-87 11 �P� �i � '� 6 5 i 4 2 1 �tNAI I��A 1 1538At. F. -rT a72. T.L.�3 � � V/ E� \ ��' � � R $S. RENTON V l L L , PL. ��=�� •T . , , » .. .. « .. .. � �RuvMrr � �`a �,� h 2 3 4 S 6 7 8 9 10 I I � "r wnw � �� ;'' $ �� i � ' o� i � r � �� I 'i -- � , RE`,��AP � � 6 5 2 1 , �'4 ` + --- �: � 1 � .to Q c�v � '�' .N• i y � 3i 3e 3 4 4Q '' cr � 4 :::�r o��' �.�: ► � �yj.�'�s` ' o��jo� �. I.I ��iii.�iiiiiS� ''� � 'o' . vMrrFA ACCE55 � �ESS�� • �' ,• '�' ••�• JM�� • � '� � .�,. o� L' .�0 y� . . • �N''.0•' �/l.� O� � /00 � ¢ � �HI__� o .. 2 5 S � �G 'R A�. _---- . �8 6 27 6 ZT 6 27 i � � �� ^ � T � y 7 2b -- - -�- -� [� ' 8 25 8 (�j 25 ; z'�8o � � �9 ° � � 9 � v � : a4 � � 4i� � � 6 �B� � � v -- -- 10 ID 23 ' 9 �`,� � � 0 7 t2) �i �i6 � � q2 � o i�5 W �i � --- � 12 2 � t2 2! -_ 2 � I �_ ---� 22 � - - - � � � � � � a ' p. ` �L� � 2� 13 � �G u¢i •� ► � . � � � � 1�. � g �, " � � ` �r ,� �- �r' � i�� I a� i i � (� 15 18 = -- � fs • �o""'�� x�r \ o.�, � �, �� ' � �' � ,� __ n 3 .� � ,� a � � � �, , •'' � f` e 15TH -„ ST 60 � �% �� sr� � �, ' 6.52 . �soz ,p� � � - r� �t' ul 1 � .. 3a51�(q (2) ' �I " � r � 1 I (N (B) (C) (� x a,m � T-- �BS.P. I n .= ' I � � s. -�� o tz) s ti3? ' le) ' 1�]k ��[� 67 ! '� � ( � Rn S7 37 = X t� �j f 4 �' 0 � � � 1 112 �/ A �6 1�� 11 S . � � � y�z� O '_= �_- az �� u� ,,, ¢_,, �0 47 I� _ � _ � �� , 4 � 45 43 � � 621 � � ^ � =-- �il �R �3 � (3?$ r-----• � I � I a _ __ IG99 N j,f' 7S .� � �-�- � 1 �, � L �� \`\`�� !`— .�qC i I i I _''�� r� q � � 35- ---48�---- . s � �}2 �` - -.. _ � � � � 6 ►� __ � �• � I � a�.. . � �[� � i � ti p I .. •• 1 rS I T � `�'� "_� i KQ� � S. /6TH ST. � r—,_ � �., n- -n'-��"=�= .._ r� 49 _r�--, i a t ► i—, r.� � � W � W � W U , ,� :::� � � W � N � C/) H TASK 2 RESOURCE REVIEW Adopted Basin Plans and Finalized Drainage Studies: The site is not located inside any basin plan areas. Basin Reconnaissance Summary Reports: No known reports are known to exist. Critical Drainage Area Maps: The site is not known to be located in any critical drainage areas. (FEMA) Maps: The site is located outside the 100 year flood plain. Other Offsite Analysis Reports: None were available Sensitive Areas Folio: None of the site is located in or near any sensitive area (see sensitive areas map under Task 1). DNR Drainage Problems Maps: Not applicable. Road Drainage Problems: Not applicable. King County Soils Survey: The site's soil is a Beausite Gravelly Sandy Loam (BeC). Wetlands Inventory Maps: There are no wetlands located on or near the site. Migrating River Studies: Not applicable. Drainage Complaints: The City of Renton Surface Water Department was contacted regarding drainage complaints. We haven't received a response as of the date of this report. Z O �- U W � � Z 0 J W � M Y � Q � TASK 3 FIELD INSPECTION A field inspection was conducted on May 14, 2004 to inspect the onsite drainage system of the site. Offsite drainage systems were also inspected downstream approximately 114 mile(s) from the discharge point of the site. The inspection involved investigation of the ten specific items of a Level 1 Inspection per the King County Surface Water Design Manual, 1990. The inspection yielded the following findings: 1. Other than the overgrown inlet to the storm pipe that crosses under S. 14`n Street and 1-405, there were no existing or potential problems observed. 2. The existing drainage system capacity was adequate. 3. There were no existing or potential flooding problems. 4. There were no sedimentation, scouring or bank sloughing problems. 5. No significant destruction of aquatic habitat or organisms was noticeable. � 6. Qualitative data such as land use, impervious surfaces, topography, and soil types was noted and can be found in Task 4 information. 7. Information was collected on pipes, ditches, and structures. This information is also included in the Task 4 information. 8. Tributary basins delineated in Task 1 were verified. 9. No neighbors were contacted. 10. The weather conditions at the time of the inspection were warm and sunny. TASK 4 DRAINAGE SYSTEM DESCRIPTION AND PROBLEM DESCRIPTIONS TASK 4 DRAINAGE SYSTEM DESCRIPTION AND PROBLEM DESCRIPTIONS Site Draina�e This project is located at 1413 Shattuck Ave South in the City of Renton. It lies along the west side of Shattuck Ave South. The site is approximately 0.34 acres. The site consists of a home, driveway, and the rest in lawn. The existing drainage tends to sheet flow from the south to the northeast toward neighboring properties and Shattuck Ave South. Some runoff flows across neighboring properties while the rest flows toward Shattuck Ave South where it enters a public storm system tocated along the west side of the street. All runoff ultimately reaches the public storm system at the intersection of Shattuck Ave S. and South 14"' Street. The property receives upstream runoff from the properties to the soutfi. Offsite Drainaqe An Off-Site Analysis Drainage System Table is provided on the next page that describes in detail the offsite drainage components at least %4 mile downstream from the project discharge location. Please refer to the offsite drainage map in Task 1 because the map symbols listed in the table correspond to drainage component symbols on the offsite drainage maps. �FF-SITE ANALYSIS DRAINAGE SYSTEM TABLE SURFACE WATER DES�GN MANUAL, CURE REQUIItEMENT#2 Basin: Black River Subbasin Name: Subbasin Number: Symbol Drainage Drainage Slope Distance Existing Potential Observations of field Component Type, Component from site Problems Problems inspector, resource Name, and Size Description dischar e reviewer, or resident see map Type:sheet flow,swale, drainage basin,vegetation, % '/.mi=1,320 ft. constrictions,under capacity,ponding, tributary area,likefihood of problem, stream,channel,pipe, cover,depth,type of sensitive overtopping,flooding,habitat or organism overttow pathways,potentfal impacts pond;Size:dlameter, area,volume destructlon,scouring,bank sloughing, surtace area sedlmentatlon Indsion other erosion A 12" conc & short Flows along the west �25% 0'-270' none none No problems observed, stretches of ditch side of Shattuck junction with storm system toward S. 14�` St. in S. 14�' St. not observed, but assumed B Ditch&driveway Flows east along south �1% 270'-900' none none No problems observed culverts side of S. 14th St., 18" conc & hdpe pipes, 3- 4' wide ditch, 2-3' deep, some portions were wet, grassy bottom& sides C 30" conc & mh Flows under S. 14 �2% 900'-1350' Inlet not Excess Not observed,relied on City Street and I-405 observed vegetation of Renton map, inlet to pipe (vegetation) could cause not observed because of constriction excess vegetation 98-4\inB04 TASK 5 MITIGATI4N OF EXISTING OR POTENTIAL PROBLEMS � TASK 5 MITIGATION OF EXISTING OR POTENTIAL PROBLEMS After a thorough field inspection and a detailed resource review there were no major or existing problems identified. The proposed improvements will not produce a significant impact to the existing drainage patterns once the site has been stabilized and the runoff has been controlled via perforated stubouts and a new conveyance system. The storm pipe referred to in Task 2 should be cleared of excess vegetation at its inlet. A temporary erosion and sedimentation control has been created to minimize the transport of sediment laden runoff to the downstream conveyance system. I APPENDIX B RUNOFF CALCULATIONS i Summary Report of alf RLPooI Data Project Precips [100 yr] 3.90 in BASLIST2 [predev� Using [TYPE1A]AS(100 yrj [dev] Using [TYPEIA] As[100 yr] LSTEND i 8asinlD Peak Q Peak T Peak Vol Area Method Raintype Event � ___� ��5� (hrs) (ac-ft) ac /Loss predev 0.2192 8.00 0.0750 0.34 SBUH/SCS TYPEIA 100 yr i dev 0.2597 8.00 0.0889 0.34 SBUH/SCS TYPEIA 100 yr � BASLIST [fYPE1A]AS [100 yr] DETAILED [predev) (dev] � LSTEND Drainage Area: predev � Hyd Method: SBUH Hyd Loss Method: SCS CN Number I Peak Factor: 484.00 SCS Abs: 0.20 � Storm Dur 24.00 hrs I Area CN TC I Pervious 0.2980 ac 8fi.00 0.09 hrs i Impervious 0.0460 ac 98.00 0.00 hrs Total 0.3440 ac � Supporting Data: I Pervious CN Data: lawn 86.00 0.2980 ac Impervious CN Data: �i house, driveway, concrete 98.00 0.0460 ac Pervious TC Data: Flow type: Description: Length: Slope: Cceff: Travel Time Sheet lawn 75.00 ft 8.00% 0.1500 5.52 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel T�ime Sheet dummy 1.00 ft 100.00% d.0110 0.01 miri �� Drainage Area: dev Hyd Method: SBUH Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur 24.00 hrs Area CN TC Pervious 0.1630 ac 86.00 0.09 hrs impervious 0.1820 ac 98.00 0.00 hrs Total 0.3450 ac Supporting Data: , Pervious CN Data: lawn 86.00 0.1630 ac ; Impervious CN Data: homes, driveways, paving 98.00 Q.1820 ac Pervious TC Data: I Flow type: Description: Length: Slope: Coeff: Travel Time ' Sheet lawn 75.00 ft 8.00% 0.1500 5.52 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet dummy 1.00 ft 100.00% 0.0110 0.01 min FRUM :WILLIaMS FAX PJO. :253631164? May. 19 2@04 06:37PM P1 Williams Contraeting On-site septic systems Dale Williams contractor, consultant PU F3ox 7333 Fric Lobdcll certified designer Covington, VVA 98t)42 King County 253-631-1fi47 Cramer NortJiwest Inc 5-19-(l4 945 N Central, Suite 104 Kenl, WA 98032 'Re: In�ram Short !'lat Infiltration Tesl 1413 Shattuck Ave S, Renton Dear I,�rry�, This letter is in regazd to the results of the in.ziliration test dune un the abuve referenccd property. The soils are �.� follows: Soil lo� #1:0-10" topsoil, 10-3(?"brown laamy sand, 30-�0" sli�htly mottled tan loamy sand, 40" heavily rz�ottled and compac;t Soil log #2:10" topsoil, 10-18" brown loamy sand, 18-37" slightiy rraattled tan loamy sa�nd, 37" �.rey and heavily mottled, compact Soil log #3: Q-10" to�u,il, 10-28" brown loamy sand, 28-32" m<�tticd �rey loaz��, 32" heavily mottled and comp�ct Water drop test: #1� 17-24" @ 5 MP[, 24-32„ �a, I 1 MPI #2: 18-24" �c� 4 MPI, 24-32" @ 1(� MPl #3: l A-24" cc 6 MPI,24-27" (a� 121v1PI if you have an�quesFions�l�ase call me at 253-631-164'1. Sincerely, � � � r /�,:.� � � ��-'�, ��,�� ' � , y , � __. ! r?'�`/..-.'.":\l� '. -4 �f` Z , /� -. `.—'�� . . ` f-��c �� 1 ~. � • �^� �_'�u� k.�s ` �� . .. .._ . . - cros � �r�n�.v.w,� oiiw '1 �� e v-d; ��r� I , �� .a�- ""' .MOJS'�.7i.it.f3k � _�� _ . � . �� . �.�_ . .�- .� _- - . � f Y Y,370--'. _ .. `` �JtY!1 NIiOr � �� I _ -------L— -� 'J- _ . . A _ /( Y71 r>� �'sy ar:T k i. �`A i .�� - �---_'_' -� � � ' -� �� .._ s � R !s �s�.or. ' . --- � �� ' - � �' _ �eu, �» � r rvr ; ;. anaw - � ��^ _ y .\ -- '�w --�• - --'.\= r.�;.- -- -- _ � -- - -- 't! DG^�GCSY - ��. �- •--- s�rs -- $ C!Ql ,r.- � i ''� - '�=' � , � _ _ � ',� 'L ES itlle C — '` - . , .�: _� � � -T------��------- --—----�----- � �--------�`----•--r-- _ - � __ 1 f �rv.as�o .�r�urt�r .,� � -• --_ � � � •�' 9 'Szl19�?,tlt ' _j�_�. _ ,� _ �; , = p � �'lXl1'1��W'1fLR � � SS1�i 'SS�91f� � _ � - +JCLIi�`_ t.1'i--�--�-� " X't[ .�°0� � � ``' 1 �, �-3..�.. � — --- �.---_"` - — _ �i` �.;'71�' ?1.'7fJ 3�if,Fol�'� .. :!"' �.'.'c ?µ',' Y _ \�' `� _' -.�--:._ - - ,�'J.' �7Rr' -- - �!N ` r..�-.r�WY.�/��^ �� .� - .. J[ - 'R'• �„ '^^-r-.�_.,.i � 4��"_._ ^ __ ... ."_ . � �h_ � i9'1d' ` ' � l X i _ "� '—_ . -�-� � � ` ' � �,��-- , _. -�r: Y+. _.. \ ,�_ � '.1 - _....�_ Y:'d�Sy�_ '~� .. ... '� , � ' ,_. . . ♦ '-' --�- -�- - - " - -"- - ' '-- � -- �- ' - ^_�.�_�-..-_��'--_� --_-^ • __ . __ - _ _"' _ . '-i�-` � -.- - , Q L�