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03483 - Technical Information Report - Preliminary
i i � �. PRELIMINARY TECHNICAL INFORMATION I �l REPORT � � Proposed New Life Christian Church � Parking Lot and Soccer Field on West Side of Madsen Creek � ( SWC — Renton-Maple Valley Highway and 152nd Avenue S.E. a.k.a SR-169 and 152nd Avenue S.E. Renton, Washington � � Prepared for: i 5"���j Church Consultants ���af AA��oes P.O. Box 1526 ����� _• '�;o Duvall, Washington 98019 � � �� C. �t�� :,;� � .� �• .��' p�ann�n9 D�s*.` I ��t„� .a G, ,p� � S��,N � � May 8, 2009 ! UC 1�s!(Jr�' OUr JOb NO. 11706 1 � ' o ��� r,�,_ i f 1 I G�'4� � ��/� Z ( CIVIL ENGINEERING, LAND PLANNING, SURVEYING 18215 72ND AVENUE SOUTH KENT,WA 98032 (425)251-6222 (425)251-8782 FAx c� 2 BRANCH OFFICES ♦ OLYMPIA,WA ♦ TACOMA,WA ♦ CONCORD,CA ♦ TEMECULA,CA s; �I���1� y� www.barghausen.com I <, �Fe � ~L Lnc>tN 3 �83 � ✓ w � � � w � 0 H � w � 0 x a 0 � � 1.0 YKOJECT OVERVIEW The existing New Life Christian Church is located on a site that is approximately 55.14 acres in size located within a portion of Section 23, Township 23 North, Range 5 East, Willamette Meridian, City of Renton, King County, Washington. More particularly, the site is located on the southwest corner of SR-169 and 152nd Avenue S.E. The proposal at this time is to develop the portion of land which lies westerly of Madsen Creek, which divides the site in two. There are no improvements on the west side of Madsen Creek and the existing Church, parking lot, and water quality and detention facilities are all located on the east side of Madsen Creek. The existing topography of the site is such that the site tends to drain in a northerly direction at a fairly c�nstant rate towards the right-of-way of SR-169, where runoff is proposed to be collected in a pond prior to discharge to Madsen Creek adjacent to the right-of-way. The proposea detention pond will be sized to provide Level 3 Flow Control and Basic Water Quality ri>:- ti�c developed area on this western portion of the project site. There is an existing low flow stream passing through the site lcno«�n as Madsen Creek, which drains a very large upstream basin of 1,790 acres up on the Plateau and I�airwood area of the Cin� of Renton. The low flows from the upstream basin, 40 cfs or less, are routed through Madsen Creek, which passes directly through the center of the site and lies on the east side of the proposed developed a�-ea of the project site. Flows in excess of 40 cfs are bypassed along the western property line of the proposed development�nd course separately fi-om Madsen Creek a� it now stands. The site on the western side «�ill discharge to Madsen Creek low flow streair. Please refer to the off-site analysis in Section 3.0 of this �-ep�rt for an exact e���lanation �f r} downstream drainage course and upsn•eam basin for this p� The proposed development on this west side of Madsen � overflow parking from the existing church buildings as «ell as a soccer iield ior use ior ii school children. A jogging track wil] be installed around the entire parking and soccer field area � 1 1706.03 l.doc FIGURE 1 TECHNICAL INFORMATION REPORT (TIR) WORKSHEET � KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (T!R) WORKSHEET Part 1 PROJECT OWNER AND Part 2 PROJECT LOCATION AND PROJECT ENGINEER DESCRIPTION Project Owner Church Consultants Project Name New Life Church West Side Phone DDES Permit# Address P.O. Box 1526 Location Township 23 North Duvall, WA 98019 Range 5 East Project Engineer Ali Sadr Section 23 Company Barghausen ConsultinQ En ing eers Site Address 15711 — 152nd Avenue S.E. Phone (425) 251-6222 Renton WA 98058 Part 3 TYPE OF PERMIT APPLICATION Part 4 OTHER REVIEWS AND PERMITS � ❑ Landuse Services ❑ DFW HPA ❑ Shoreline Subdivision / Short Subd. / UPD ❑ COE 404 Management � Building Services ❑ DOE Dam Safety � Structural M/F/ ommercial / SFR Rocker aulU � FEMA Floodplain � Clearing and Grading ❑ ❑ ESA Section 7 � ❑ Right-of-Way Use COE Wetlands ❑ Other � Other NPDES Part 5 PLAN AND REPORT INFORMATION Technical Information Report Site Improvement Plan (Engr. Plans) � ' Type of Drainage Review Full ! Targeted / Type {circle one): Full ! Modified I (circle): Large Site Small Site Date (include revision Date (include revision dates): dates): Date of Final: Date of Final: Part 6 ADJUSTMENT APPROVALS Type (circle one): Standard / Complex / Preapplication / Experimental/ Blanket i Description: (include conditions in TIR Section 2) Date of Approval: , 200� Surface Water Desi;n Manual ]I?0G 030.doc[8/3/O6] 1;'1!OS 1 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 7 MONITORING REQUIREMENTS Monitoring Required: es / No Describe: Start Date: Completion Date: Part 8 SITE COMMUNITY AND DRAINAGE BASIN Community Plan : Renton Special District Overlays: Drainage Basin: Madsen Creek/Cedar River Stormwater Requirements: Level 3 Flow Control and Basic Water Qualit� Part 9 ONSITE AND ADJACENT SENSITIVE AREAS � I� � River/Stream ❑ Steep Slope ❑ Lake ❑ Erosion Hazard ❑ Wetlands ❑ Landslide Hazard ❑ Closed Depression ❑ Coal Mine Hazard � Floodplain ❑ Seismic Hazard ❑ Other ❑ Habitat Protection ❑ � Part 10 SOI LS Soil Type Slopes Erosion Potential Urban Land Newberg_ ❑ High Groundwater Table (within 5 feet) ❑ Sole Source Aquifer ❑ Other ❑ Seeps/Springs ❑ Additional Sheets Attached ' ''00� Surface �1%ater Design Manual 1170G.030.doc�8/3i06] 1/1/05 2 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 11 DRAINAGE DESIGN LIMITATIONS REFERENCE LIMITATION /SITE CONSTRAINT ❑ Core 2—Offsite Analysis ❑ Sensitive/Critical Areas ❑ SEPA ❑ Other ❑ ❑ Additional Sheets Atfached Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet per Threshold Discharge Area) Threshold Discharge Area: (name or description) Core Requirements (all 8 apply) Dischar e at Natural Location Number of Natural Dischar e Locations: 1 Offsite Analysis Level: 1 / 2 ! 3 dated: Flow Control Level: 1 / 2 / 3 or Exemption Number incl. facilit summar sheet Small Site BMPs Conveyance System Spill containment Iocated at: Control structure Erosion and Sediment Control ESC Site Supervisor: Contact Phone: After Hours Phone: Maintenance and Operation Responsibility: Private J Public If Private, Maintenance Lo Re uired: Yes /No Financial Guarantees and Provided: Yes / No Liabilit Water Quality Type: Basic / Sens. Lake / Enhanced Basicm / Bog � (include facility summary sheet) or Exemption No. Landsca e Mana ement Plan: Yes / No Special Requirements (as applicable) Area Specific Drainage Type: CDA/ SDO / MDP/ BP/ LMP/ Shared Fac.I None Re uirements Name: Floodplain/Floodway Delineation Type: Major / Mino / Exemption / None 100-year Base Blood Elevation (or range): 103.26 Datum: NAVll 83/91 Flood Protection Facilities Describe: Source Control Describe landuse: (comm./industrial landuse) Describe any structural controls: � 2005 Sw•face Water Desion Manual 1 t706 o3o.doc [8r��o6� 1!1!OS 3 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT {T!R) WORKSHEET Oil Control High-use Site: Yes / o Treatment BMP: Maintenance Agreement: Yes / No with whom? Other Drainage Structures Describe: Part 13 EROSION AND SEDIMENT CONTROL REQUIREMENTS MINIMUM ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION AFTER CONSTRUCTION � Clearing Limits � Stabilize Exposed Surfaces � Cover Measures � Remove and Restore Temporary ESC Facilities � Perimeter Protection � Clean and Remove All Silt and Debris Ensure � Traffic Area Stabilization Operation of Permanent Facilities � Sediment Retention ❑ Flag Limits of SAO and open space preservation areas � Surface Water Control ❑ Other � Dust Control � Construction Sequence Part 14 STORMWATER FACILITY DESCRIPTIONS Note: Include Facilit Summa and Sketch Flow Control T e/Descri tion Water Qualit T e/Descri tion � Detention Level 3/Pond ❑ Biofiltration ❑ Infiltration � Wetpool Wet Pond/Basic ❑ Regional Facility ❑ Media Filtration ❑ Shared Facility ❑ Oil Control � ❑ Small Site BMPs ❑ Spill Control ❑ Other ❑ Small Site BMPs � ❑ Other � ?OQS Surface Water Desi�n ;�7anual I 1706.o3o.doc[8%3�06� l;l!OS 4 KING COUNTY, WASH[NGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 15 EASEMENTS/TRACTS Part 16 STRUCTURAL ANALYSIS ❑ Drainage Easement ❑ Cast in Place Vault ❑ Access Easement ❑ Retaining Wall j ❑ Native Growth Protection Covenant ❑ Rockery>4'High � i ❑ Tract ❑ Structural on Steep Slope � ❑ Other ❑ Other � Part 17 SIGNATURE OF PROFESSIONAL ENGINEER � I, or a civil engineer under my supervision, have visited the site. Actual site conditions as observed were incorporated into this worksheet and the attached Technical Information Report. To the best of my knowledge the information provided her is accurate. � � .� — ' ; �_ Si ned/Date ; ' I � i � 'Ull� Surliicr �1`atcr [�esi�n �qanual I 170G.03f).doc�R/;Itx�� li U�S 5 FIGURE 2 SITE LOCATION , r , � Q SE 139TH PL � ��� 5�''4i` SE I�TH �� � ~ � �� �'�' � ���� ��� PL �� � SE 139TH P L � c s� i�an+ sr 6 � 4 � � � �; �- � � y415S � H � �1�0'fH PL � � W � l�x +��'i� $E _ 141ST _ � a s� i+isr i $T' j� - s� � a S1' �gE 142ND ST � � � SE 142ND G 142ND ST -� `�' � �• •, ��*�,l „ � � 4�u !� ttl �T �Q SE 142No sr p� � � � ST� ^ •�.��, 1� � > �'� � � s� �ia�uo " 4 � � � �' � se ��,�� ��' ., a �, �s r, � _ ,r s� ixsao v� � SE 143RD � ST _Z�TM � I ST � � � � � � � � _ �TM � �ti`?��` �<rr,{�'� ��'�� � 4� SE 14�ry p-�-e �� � �� SE l44tH W ~ l;�G(�f� x� � � � � � � � � � i ��,�r? � � � Q�' ��,�� �,� �f � �a �� � z! �( �I �� � ���! �t � � �� S � �` ' � � � ��� , ( t ::-_I__d'� a � � � � � � �tiFs Q ', s� 148�'T}j'___ ST� '� � �'- --_ PL ,u�£S� ��� � ,�7� RON RE61S � � V ,ti a �� sa �Plyf-,P PARK � I�j l .y � T,p � `�`5' $� ��' • t �'�SE_ 152ND �0 � ��� i $T �J � F ~ 0� lb4l�, '� I$ a CEDRR � �;;' � �� :.: AY �. .�..1� ��� � �� ,.. ___...��, RI�ER :� ! SF �m �L_ -,�,�,'�}_ � .. ��,'� . PARK s�. p��7fj rr r�J = SE 156TM St ��,�'�`�� ^�:4 jr�� —_`– � jssTN � SE `�y � � s �eR��, j_ _ -�-_S7' � �� � �� o $ �� ` �S�' 1�J�q � v��.__4J� � �$E 15BTH �I Cl �P � 4�- � ST �1��/ d u �� � � � ��ym ~ � � '' �`Z St o y. .r '� 1b9fH _�� c��, Pl � ,f__�.� b; 1� �� � -.,n� __ PI. Sf_._ � a --- r� rQ4� \.� P� .;,, �azb �r � 2azteu Pt� SEE A A7 ; �� � �� gE a `�.!' J', ��' .a { � iO � `r?Ib� <' � x� ! 1 SE 170TN ST 4� � =�`"a' ~¢ � \ 'sE' E � �ST 2 158TH PL SE 4. f8*TM � ,vy � �e 3 5E L71ST ST SE 16�TH PL �� S� �a�ry � " g a 4 158TH AY SE ^ `�'=`$ �? SE�ss� '� � y �, '� `-��]3� sT '� � �S; S ~ 1es� � P SR�� c� v S� SE' j .rr�i�� f51 fi r � �A � �; � � ������, �g111 PL � ,� �j'y ♦ la.'fF ,,., `c' a n a� ti d, �� �'l �r .... � 2687N �T `i� 'ST� �e 6"fM �' � ��TM___.��� � 187TH � SE $r / � V�y` � '" P�" Pt �bf � �, � W° �;/ w �� `� K,;: ��' � � �`�, 5�,�-��---�L_ _ � o t/1- � :, ,a .� d' �; �. . /.�`�' a� . REFERENCE:Thomas Guide (2005) FOr: Job Number GHA V 18215 72NDAVENUE SOUTH NEW LIFE CHRISTIAN CHURCH 11706 � 1r���F KENT,WA98032 RENTON, WASHINGTON �:N.rS. 47, - , Z (425)251-6222-PHONE °+ ` �,�i (425)251-8782-FAX Tltle: t��r �V�r�� CIV�I ENGiNEERING,LAND PLANNING, V I C I N I 1 I MAP , 'tio iHa�H� SURVEYING DATE:05I11/09 v�i r000s�i i�oe�e,m�an�a�n�cs�i��oe exr�an c� FIGURE 3 DRAINAGE BASINS, SUBBASINS, AND SITE CHARACTERISTICS � o • � � ••�--�_.��� „ � ��;,:�� �(, ,-..i:� v:��� `� �i,,"��;: �''`� �*/j��'"� `=�— ,;'�:1,����';� ��`�"!�i;:�._.. �,.��,_ � �. ;Ii��i ;,11�l���-`_�`.—+ �`.• - � � /`y `�'�'��'"� I ,. 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W I � � � � � � � � � w � w � Soil Map-King County Area,Washington MAP LEGEND MAP INFORMATION Ana ot Int�rest(AOI) (,� Very Stony Spot Map Scale:1:2,500'rf printed on B size(11"x 17")sheet. � �4rea or�nterest(AOq t wet spot The soit surveys that oomprise your AOI were mapped at 1:24,000. $O��s ♦ Other Please rey on the bar scale on each map sheet tor accurate map Soil Map Units measurements. Speciai Line Featuns Special Point Futuros :.` Gu��y Source of Map: Natural Resources Conservation Servioe � 8��� , . Short Steep Sbpe Web SoH Survey URL: http://wabsoilsurvey.nroa.uada.9ov � ��P� Coordinate System: UTM Zone 10N NAD83 x Cwy s�t "' �8f This product is generated from the USDA-NRCS certified deta as of PoliHcal Faatuna the versfon date(s)listed below. ♦ Closed Depression � Cities Soil Survey Area: King County Area,Washington x C'���Prt Water Features Survey Area Data: Version 4,Nov 21,2006 ., Graveuy Spot . Oceans Date(s)aerial images were photographed: 7/24/2006 � Landflll Streams and Canais The orthophoto or other base map on which the soil lines were /t Lava Flow Transportatton compiled and digiUzed probably differs from the badcground Marsh or swam ''"� �'�f of ma unit bounda�ieshma be e d t�guft,aome minor shifting �Ir. P P Y � Mine or Quarry �/ Interstate Highways � MisCelleneous Water -'� US Routes 0 Perennial Water Maja Roads � Rock OutcroP N Local Roada �} Saline Spot Sandy Spot .t. Severely Eroded Spot 0 Sinkhole � Slide or SGp � Sodit Spol = Spoil Area Q Stony Spot �5►�� Natural Resources Web Soil Survey 2.2 5/7/2009 � Conservatlon Servlce Nationat Cooperative Soit Survey Page 2 of 3 Soil Map-4Cing County Area,Washington Map Unit Legend King County Area,Washington(WA633) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI AkF Alderwood and Kitsap soils,very steep 18.7 22.0% Ng Newberg silt loam 32.6 38.3%! Py Puyaliup fine sandy loam i 20.6 24.2% Ur Urban Iand 13.2 15.5% Totals for Area of Interest 85.1 100.0'/0 USDn Natural Resources Web Soil Survey 2.2 5/7/2009 � Conservation Service National Cooperative Soil Survey Page 3 of 3 , Soil MaP—�tCing Couny Area.Washingto� � 4 f� �: 564240 564320 47'2T 59' e 564400 56a460 564560 S�rt5t0 5fui720 r, � , �' � 56�890 565040 565120 � 'n ..:: . . � � ,. ., . �a . ti x �' � � ..y . 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' sql*qj .- ��5 � � ��; ' C �R �; .. ..� < � x �- � � . .i '�'F` �. ' � :}�'m < . . , � � y"��� ��� `tp , � r � . . d uv k � .. .: s . .,�,• . � � . c'' e . � � � � : .�;. ..�.,.� ..�. . � ., �' � � ? "� �� " �' N � S 4T 2T 43" 56424D r.... �:,. .�t, . �. . . = 3 . #' . � F + y��- } . .�. .. N 5643'IU . 3Ra a( � Sfi440.'1 �•644E0 .`,G:�LG 564u4� Sb4/2U �y 564800 564880 564960 565040 � 47'27-42` 5E572C � I�P Scale:12,500 ff prlMed on 8 6¢e(11"x tT�sheet N y� p 40 Melere C0 �,, � �� 240 N 1`� 0 ��p �0 � Feet ' 900 ' USDA Natural Resouroes �� Conservation ServPce Web Soil Survey 2.2 5/7/2009 National Cooperative Soil Survey Page 1 of 3 .i �I _ _� l I�I y 1 ( � j : i � I ,_� i 2.0 CONDITIONS AND REQUIREMENTS SUMMARY � 2.0 CONDITIUI�S ANll 1�:(tUllt�;M�:�iTS StiMMARY 2.1 Analysis of tUe Eight Core Requirements Core Requirenzer2t No. 1: Discharge at the Natural Location. Response: This project will discharge at the natural location much as it does under existing conditions with very little change to the discharge rate, location, and peak flows after development. Core Requiremerrt No. 2: Off-Site Ai7alys•is. Response: Please refer to Section 3.0 of this report for the off-site analysis prepared for this development. Core Reyuirernent No. 3: Flow Corat��ol. Response: As delineated in the Level 1 Off-Site Drainage Analysis, Level 2 Flow Control is the required flo��� control for this project site. However, Level 3 Flow Control is being provided. Cor�e Reguireme�7t Na 4: Co��veyar�ce Syster�a. Response: The conveyance system for this project site will be sized consistent with the 2005 King County Surface Water Design Manual such that the Rational Method will be used to size the conveyance elements since less than 10 acres of the new developed site will contribute to any one conveyance system element. Core Requirer�zent No. 5: Temporc��y Erosio�l and Sedimen.t Control. Response: This project will concur with all erosion and sediment control measures required by the 2005 King County Surface Water Design Manual as delineated in Appendix D of this manual. C1ea1-ing limits will be specified, cover measures will be instituted, perimeter protection will be installed, and traffic areas will be stabilized every day after worlc is completed by sweeping the streets of any sediment deposited. Sediment retention will occur on site in the form of a sediment pond for each developed area, etc. Core Requirernent No. G: Mair�te�aal7ce and Operatior�s. Response: This project will concur with all maintenance and operations requirements of the City of Renton. Cor�e Requi�-ernei��t No. 7.• Fir�a��cial Gi�rararatees a��.d Liabilitl-. Response: This project will concur with all financial guarantees and liability requirements for the City of Renton. Core Requirement No. 8: Water Qzralit��. Response: This project reyuires Basic Water Quality trcatment and the proposed method of treating runoff from this project site will be by wet pond located as dead storage below the live storage of the pond proposed for this development. I 1?OG.G31.doc 2Z Analysis of the Five Special Requirements Special Requirement No. 1: Other Adopted Area-Specific Requir-ements. Kesponse: There are no other area-specific requirements for this project site as delineated in the 2005 King County Surface Water Design Manual. Special Reyrri�-en�te��t,�'o. Z: Floocl Ha�ard,�lreu I�eli�reation. Response: Since this ��roject is adjacent to a flood hazard area for a ri��er or strea�n the 100-year floodplain and floodway, if applicable, shall be detennined. The 100-year floodplain was determined with the modifications to the New Life Christian Churcl development located on the east side of Madsen Creek based on backwater from Ceda; River and that same 100-year floodplain will be used for this development. Special Reguirement No. 3: F/ood Protection Facilities. Response: This project does not rely on an existing flood protection facility nor does it propose to modify or construct a new flood protection facility. Therefore, this special requirement does not apply. Special Requirement No. 4: Source Control. Response: This project will have a small buildirig associated ���ith it in the form of a batlu-oom and storage area; therefore, water quality source control is applicable to the project site and will be applied as described in accordance with the King County pollution prevention manual and King County Code Section 9.12, such that the parking lot will be swept regularly and the owner of the pr�ject will be educated about the proper use of pesticides and fertilizers. SpeciullZequirement No. S: Oil Coratrol. ltesponse: This project does not meet thc llireshold of a high use site: therefore, this requii-ement does not apply. � i��ur,o�i_d<,�� • � I � H � � � � � � w � �I � � � � 0 O M LEVEL 'I OFF-SITE DRAINAGE ANALYSIS � Proposed New Life Christian Church Building Additions SWC — Renton-Maple Valley Highway (SR-169) and 152nd Avenue S.E. King County, Washington Prepared for: Church Consultants P.4. Box 1526 Duvall, WA 98019 November 9, 2005 Our Job No. 11706 «-� -o� ��RY JACpes �.r�Of W�k,NcO y 2 � s 'Y ? 4 ���t€ , S ¢� . _.._� �G H A V �;ci_aEs 10/1_��[�/ � �,I� z CIVIL ENGINEERING, LAND PLANNING, SURVEYING, ENVIROfVMENTAL SERVICES .� 1821 5 72ND AVENUE SOUTH KENT,WA 98032 (425) 251-6222 (425) 251-878; ° ,�`'��,� y? BRANCH OFF{CES • OLYMPIA,WA ♦ TEMECULA, CA ♦ WALNUT CREEK, GA ��� , �p www.barghausen.com 1 � � ��''ENG�N TABLE OF CONTENTS TASK I STUDY AREA DEFINITION AND MAPS EXHIBIT A Vicinity Map EXHIBIT B Downstream Drainage Map EXHIBIT C Upstream Basin Map TASK 2 RESOURCE REVIEW EXHIBIT D FEMA Map EXHIBiT E Sensitive Areas Folios EXHIBIT F SCS Soils Map EXHIBIT G Assessor's Map EXHIBIT H Wetland Inventory Map EXHIBIT I Basin Reconnaissance Summary Report TASI4 3 FIELD INSPECTION �XHIBIT J Off-Site Analysis Drainage System Table 3.1 Conveyance System Nuisance Problems (Type 1) 3.2 Severe Erosion Problems (Type 2) � �.� ��vcrc Flaudin�.: Problem� ("I'y��r �t 1.'i��1 �� U�:��i�'t��7� 5�ST��1 U����ZI�T��1�� .��i�< < :'��:� )}i� i��.T i)f���i ���>>; ���,.�i. EXHI�3IT K Drainage Comp(ain t , ? ! _; , � � 11706.002.doc I TASK 1 STUDY AREA DEFINITION AND MAPS � � �r;,�.� a 1 i 1 2 ��'^L 25, � �53 TASK 1 STUDY ARCA DErINITION AND MAPS The proposed New Life Christian Church is located on a site that is approximatel located within a poRion of Section 23, Township 23 North, Range 5 East, Willa� _ County, Washington. More particularly, the site is located on the southwest corner of SR-169 and 152nd Avenue S.E., on a previously developed site that has an existing church, a parking facility, and school hall. The existing topography of the site is such that the site tends to drain in a northerly direction at a fairly constant rate toward the right-of-way of SR-169. There is an existing detention pond tocated in the noRheast corner of the property, which witl be filled in with a new under ro tention vaui�—�'J �`'`'' installed in the same location. The Technical Information Report ('fIIt) for the original design for t s '�- . Renton Assembly of God now known as Renton New Life Christian Church dated February 7, 1992, �5,�' F , �-- revised June 3, 1993, with a final revision of June 29, 1993, is attached to the TIR for this new �, 2��-w development on the same project site. Please refer to that document for a funher description of the � � � existing conditions on the project site. • � P , _.L,�u�'1 •� .nL (�v t��c��,�s Vr'� �y ,z The proposal for the new development, a portion of which is considered redevelopment of this project �� site, is to construct a new church building, additional parking with two stormwater quality detention ? ponds, one being a pond and one being an underground vault locaied in the northwest and northeast corners of the project site. The total relief across the site is approximately 75 feet. AI! existing buildings \ in this devetopment will remain intact and untouched; however, portions of the existing parking iot will � be demolished to construct a new church ' ' ' UPSTREAM DRAINAGC ANALYSI� Based on the USGS quad map, our site visit, the original TII2 prcpared for this project in 1993, and ., topographic survey prepared for the project, it appears that there is upstream flow onto and through [hr — site. This upstream flow will be divided into two separate basins. The first is the basin from Madsen Creek, which has two separate drainage courses, one for any peak runoff rate less than 40 cfs that tends to course through the site. Any of the peak runoff rate in excess of 40 cfs has its own separate channel based on a diversion structure located at a regional detention and sedimentation facility located on the southwest ' corner of the project site. Madsen Creek has an upstream basin of approximate{y 1,490 acres, and the site itself has an all-woods upstream basin of approximately 17.5 acres. The Fairwood Golf Course consists of part of the upstream basin from Madsen Creek. Please refer to the upstream basin maps in this section of the report for a further description of how the upstream basins are configured for this project. In addition, you can refer to the TIR prepared in June I993 by Urban Design, Inc., which describes the upstream basins in further detail. �i;ob.00z.eo� I .� __� , - I � I , EXHIBIT A Vicinity Map � i ' �i �F ��� �•1'* � N �� - ,...: ..-. . � __�_' _�' � Y "•7 -,'i'� ! ��93 ;. .� .:.,: .;�r � "M�, eJ-,W 1 SE L36TN �� �� SE I?8TH Pt L .� >SE ll9111 Yt��" �. %' ` ! 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' �:, ,-�� �\�� '' � � �.•--••-- y ��_.---•...n..�- �� �� � /"�� � �LNI��I, �, �-- ��--:;;;::� � -�,����..�� ,� °��!�� �1.,,,�/��� � , e�� i �� ; - � . �t�s �� � _�► p� � � �. � ,� . -- ���.�'��� .� �:� �..�� � w � � N w � � �l1 w � � E"r �i � 0 � W � TASK 2 RESOURCE REVIEW • Adopted Basin Plans: The site is ultimately part of the Cedar River Basin, but initially drains to Madsen Creek. . Finalized Drainage Studies: A finalized drainage study was prepared for this project in 1993 by Urban Design, Inc., and is attached to the TIR under Section 6.0 — Special Reports and Studies. Please refer to that document for further descriptions of the existing conditions at the project site. . Basin Reco�enaissance Summary Report: The site is located in the Cedar River Basin. Part of the Cedar River Basin reconnaissance summary report is to construct a channel from Madsen Creek after ii crosses underneath SR-169 and courses through on the north side of the highway toward the Cedar River. Based on the site visit performed in October 2005, even through the channel is thickly vegetated it appears that it has been constructed. This was done to alleviate flooding in the downstream drainage basin. It is diffcult to say how much was constructed as the vegetation was so thick that the channel could not be viewed. • Critical Drainage Area Maps: According to the water quality applications map and the 2005 King County,Washington Surface Water Design Manual (KCSWDM), Basic Water Quality Treatment is required. According to the flow control applications map, also in the KCSWDM, Conservation Flow Control, known as Level 2 Flow Control, is required as a minimum. • Floodplain cuul Floodway FEMA Maps: Please see the enclosed Exhibit D—FEMA Map utilized � for this analysis (Panel No. 984 of 1,725, Map No. 53033C0984 F, revised May 16, 1995). As � indicated by this map, the proposed project dces not lie within a floodplain or floodway of a tream. • Other Off-Site Analysis Reports: A review of Exhibit I — Basin Reconnaissance Surrunary Report, and a site investigation was conducted in preparation of this Level 1 Off-Site Drainage Analysis. The U.S. Department of Agriculture Soils Conservation Service soils map is also provided(see Exhibit F�. • Sensitive Areas Folios: Based on a review of the King County sensitive areas map folios, it was found that the subject site dces lie within a sensitive area. Madsen Creek is a fish-bearing stream, the slopes above the project site are erosion hazard areas, the slopes above the project site are landslide hazard areas, and the site is located in a seismic hazard area. • Rocut Drainage Problems: This is not applicable. • United Slates Department of Agriculture King Cou►aty Soils Survey: Based on our review of the soils map for this area, the entire site lies within I�Tewberg and Puyallup type soils, which are both considered till type soils. • Wetland Inventory Map: The wetland inventory map for this area has been reviewed and it was determined that there are no wetlands inventoried on the project site. An existing wetland on the Aqua Barn site, immediately east of the project site, is inventoried in the wetland inventory map; however, it was not on the site. • Migrating River Studies: This is not appiicable. I 1706.002.doc A � � � � � � � Ww r � � �� '�';'�..,.. � Q ZONE X ',` ',� �'�s��;,.'�., ZONE Q� ; �,, � ,. VCJ , �'• .�' ` /� .i��.i-- / '` . "''}—� ,`` �`�,y�;r ���r r kD ,'ji r,:i� f,i`/.� ,/ � = ,' , Cj' f'f/ �,���, p o�. c ., 1� / . �///� %_� . A i ; f / :i� A� . C S \ ` ! / � � � /r r �� S v t,.:i'�f �/,,/��:',,\� � 9 �'� ZONE AE `��~"` ��� � ! ;� `' �`�•`,%;� ".'��`. � ZONE ';��. ';��`� o AE R����, ZONE X `:!=`. �`; � h� s' � � � _� � ,�r �, az � j,� , f ,� Mq �p E� ,' =,�. : � � � � � � � � _, �, ': ... ,�- , ,� ,. t w L y �_ � �, i � � vA CE R 'f+�� ,��"+� ��'�,/'� , � z w 1� �AD �.J".= ' � Q OO � � a �F � I m � /'"`^„"� J Q I W 23 ' �� � Z Qz ts�D a�Nu f �y PJ ��ST � � ��� 2� rss�r.i Q�T �AEET � y , ZONE X � . � . � � SOUTHEA$T 180TH PLqCf REFERENCE: Federal Emergency Management Agency (May 16, 1995) For.' Job Number G�'A� 1821572NDAVENUESOUTH NEW LIFE CHRISTIAN CHURCH 11706 ��' �►r�s� KENT,WA98032 RENTON, WASHINGTON 2 (425)251-6222-PHONE a.' ` �,�.,; (425)251-8782-FAX ]jt/g: : s��r �V ��� CIVILENGINEERING,UND PLANNING, FEMA MAP , h�-,�Na`H� su�vir� DATE:05/11/09 P'\I 100p5\I I 7p6�g�dyllyOphiCi\I I 706 9�M]itS.Cdr NATIONAL FLOOD INSURANCE PR06RAM � ��� F100D INSURAHCE RATE MAP F KING COUNTY, WASHINGTON .AND TNCORPORATFD AR.FAS � PANEL 984 OF 1125 I cs�E- �naF� iNr�r-x ror� �aN��.s uoT rE3wreoi I coraT�,ir:s: COMMUNITY NUMSER PANEL SUFFIX KING COUMPI, UNINCORPORATED ARFAS 530071 09&1 F REI:TOt:.CiT'! qF S3a;Ba CS�ri F MAP NUMBER 53033C0984 F ��Y�,;;;;;; MAP REVISED: ;:�'����'�� MAY 16, 1995 � w a �� P�'�o o�'� Federal Emergency Management Agency REFERENCE: Federal Emergency Management Agency (May 16, 1995) FOr' Job Number G�AV 18215 72ND AVENUE SOUTH NEW LIFE CHRISTIAN CHURCH 11706 � n►��� KENT,WA98032 RENTON, WASHINGTON 01� � Z (425)251-6222-PHONE 1-�4 ���i (425)251-8782-FAX Tltl@: ��r �V ���� CIVILENGINEERING,�o�N��. FEMA MAP PANEL �Na tMa�N� SURVEY�NG DATE:05/11I09 P�11 IOOCstI 17061e�mib;t�graphiCs111 7QC,e,ch�bilS.Cd' L EG E N D . M2 River Mile SPECIAL FLOOD HAZARD AREAS INUNDATED Horixontel Coordinetes eased on North BY 100-YEAR FLOOD 97°07'30".32°22'30" American Datum of 192� INAD 27) Projection. ZONE A No basc fload elevaticros determined. NOTES ZONE AE Base Oood elevallons determined. T►us map is for use in administering the National Flood Inswance Program; ZONE AH Fbod dep[hs of 1 to 3 feet (uwally areas K�g not necessarily identify all areas subject to flooding,perticuierly from of pondingl; base flood elevations �ocal drainage sources of smsll she, or all planimetric features outside determined. Special Flood Hazard Areas. Coastal bese flood elevations apply only landward of 0.0 NGVD,and include ZONE AO Flood depths of 1 to 3 fee� fuwaity sheet the effecb of wave action; these elevations may also differ sign'rficantly flow on stoping tertafnl; average depths from those developed by the Nationai Weather Service for hurricane determined.Fa areas of ailwial fan flooding evacuation planninp. veloaties also detemiined. Areas of Special Flood Hazard(700-yeer flood) include Zones 0.AE,AH,A0, ZONE A99 To be protected from 100-year fbod by ��V,and VE. Federal fl°°d pr°tecti°° system unde� Ceriain areas not in S ecial Flood Hazard Areas ma be corntruction; no base elevations dMermined. p Y protected by flood control swctures. ZONE V Coastal Rood wkh veloclry hazard (wave Boundaries of the floodways were computed at cross sections and action);no base flood elevations determined. interpolated between c►oss sections. The floodways were based on ZONE VE Coascal flood wltli ve hazard (wave ��Nc cortsiderations with regard to requlrements of the Federaf adionl; base fbod elevations deoermined. Emergency Management Agency. f � FI widths in some ereas m ba too narrow to show to scale. ;r'tf?" fLOODWAY AREAS IN ZONE AE F�y �,vidtns are � provided in the Flood Insurance Study Report. � OTNER FLOOD AREA$ This map may Incorporate approximate bou�daries ot Coastai eerrier Resource System Urirts and/or Othervvise Protected Areas established ZONE X Areas of SOQ-year (laod;areas of ]O�year under the Coeatel Barrier Improvement Act of 1990 (PL 101�91). flood wiih average depths o( less than 1 foot or with drainage areas less than ��►�te limiis shown are curtent as of the date of thfs map. The user 1 square mile• and areas protected by should contact appropriate communiry officiafs to determine if corporate levees hom 100-year flood. U�1s have changed subsequent to the issuance of this map. For community map revision histary prior to countywide mapping, see � OTHER AREAS Section 6.0 of the Flood Insurance Study Report. ZONE X Areas determined to 6e outside 500-year For adjoining mep panels end base map source see separetely printed floodplain. Map Index. ZONE D Areas in whicfi ffood hazards are undetermfned. ' MAP REPOSITORY UNDEVELOPED COASTAL BARRIERS � Refer to Repository Listing on Map Index � �\ � • ' • COUNTYWIDE EFLOODI NSURAN�CE RATE MAP: IdenNfied tdentified Otfienvise SEPTEMBER 29,1989 1983 1990 Protected Areas Coastal barrier areas are normeily loceted within or adjacent to Special EFFECTIVE DATE{S)OF REVISION(S)TO THIS PANEL: Flood Hazard Areas, Revised May 18,1995 to update map format. Fiood Boundary Floodway Boundary _ . Zone D Boundary , • Boundary Dividing Special Flood To determine if fbod insurance is evailable,contact an insurance agent or � Hazard Zones, and Boundary call the National Rood Insurence Prog�am at(8001�-C820. � �> ,��' Dividing Areas af Different ' Coestel Base Flood Elevations Wtthin Special Flood Hazard � Zones. Base Hood Elevadon Lioe; '�^"""^"'S13^^^'r`^^ Elevation in Feet. See Map Index for Elevatton Datum. APPROXIMATE SCALE IN FEET UD ------�—�D Cross Section Line 500 0 500 Base Flood Elevation in Feet :-..—.--..(EL 987) -- Where__Unitorm �thin Zone.-' { See Map Index for ElevaUon Datum. RM7 X Elevation Re(erence Mark REFERENCE: Federal Emergency Management Agency (May 16, 1995) F'Or' Job Number �'�Av 1821572NDAVENUESOUTH NEW LIFE CHRISTIAN CHURCH 11706 � nr s� KENT,WA98032 RENTON, WASHINGTON II'1, �,� Z (425)251$222-PHONE o S i• (425)251-8782-FAX T%���,: ���r�IU' fpe' CIVILENGINEERING,LANDPLANNING, FEMA MAP LEGEND �Na cNatH6 SURVEYING DATE:05111/09 P:\11pCQaU 1706�exhibingra�hicsU U06 exhibi}s.cdr ������ :,��L -����� , t l. .. _x, t.�- .. , � �� '-. �, ' tNwEr : ��� a4t���' , I z:�� {�qT � �v�� �tY�� �\� � . .. s �� M� 9�i --.. _. , • �`��_:�4�t�NAN� r'�,�< .. . � ,�� � - •�`�` �`�� '\� � , �` ,� C�� 'I�r �1'�� �'� •�� �� a�,�. ., '�) •\ . \ , \` ..lj . . 1 .. . . .., .,i w'� � �.. ,� ��'2 � `� `�\� �� ,����(B)� j � `. ��` '�,` �� � \ �`� �� � �: _ � . 4(NMW) - � , �, �!� \`\`�� � :� � � :.. 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' JU �t s"�.�.��j, �„ � . � Lake Yc}�tn95� :!�,'' '�I� i, �',� � � '�=` Shady Lal:e �Mud Lake) :12OOSKnpCounly • �..ei� ����.���G� U �3U441t:4k.a[-7e:qt+'�'31� .J REFERENCE:King County iMap(2009) FOr' Job Number GH'�V 18215 72NDAVENUE SOUTH NEW LIFE CHRISTIAN CHURCH 11706 4 �►r �F KENT,WA98032 RENTON, WASHINGTON Q?; • � 2 (425)251-6222-PHONE a'' . �_ � (425)251-8782-FAX Title: : G,�► = SENSITIVE AREAS ��r �r� CIViI ENGINEERiNG,UWD PLANNING, �hp tNa�N� SURVEYING MAP DATE:05/11/09 P.111000s1117061eodvU111graphiC5t11706 e�mbrts cdr Legend � I C�tY ���Y � 100 Year Floodplaia � sa„sn„ret,aw.Trase,non! Highways � Sole 5ource Aquifer ■ eopD�nap.�o, Straets � SAO Wetland 511YDM Flow Control ,;� Niphra�r � SAO Landalfde ■ eas�c Ftow Coatra , ' AKQ++�s � SAO Coal Mine � Consrwtiw�FbxContro� � � SAO Seismic ■ Flood Ptoblan FlowControl ����i� ��0� SAO Erasfon CAO Basin Condition SAO Stream � Chinook Distributlon ■ Nqh � ��� ■ Sertsitive Area Notice on Title � �lea,um � c�2�w,n;s� Drainage Compiaints � �o,,,, � CeizSa11fO"'� Areas Susceptible to CAO Tributary 8asins „f ��� Grcundwater CoMamination _ __ f" + � Lowrr Tn�utary 9asins . Undas�ifisd �---' , �� r Uppar Ttbutary Bas�ns Shoreline Management L-� Qesignation wea*M+ 5haded Relief ■ H�� � :':;� ���� Critical AquiTer Recharge Area � N�ural ■ Cst�pory 1 Rural C���2 -;�?7 Rur�UCanserwney Csltpory� ::;-�-�; � u`� SUYDM Landslide Hasards � Urb,s�7Rud � �d�a�a (-1 Lakes and Larg�e Rivers (._I LandslidaHaraM Oromape ��;� Streams 5WDM Water Quality � Floodway easic wator ou�lnY Troin,nant (GO�It? FOr' Job Number GHA V 18215 72NDAVENUE SOUTH NEW LIFE CHRISTIAN CHURCH 11706 ��' �►►�s� KENT,WA98032 RENTON, WASHINGTON Z (425)251-6222-PHONE � (425)251-8782-FAX r!tlg: `: �iiu► = SENSITIVE AREAS ��r ��� CNIL ENGINEERING.L.AND PLANNING, �hQtNa�M� SURVEYING MAP LEGEND DATE:05/11109 P.\I 1000s\117061m0iibit�prapldcs111706 e#rttts.cb :P:: . '.., .. ' -""- '- ' '�� S_ _�-•__ �"�7..:.�� a�r't`�"' --, T G .. , '..k �7 � \ _��� "— '��t �,f A ' .f a � ,7 :J � �.p� .•`` �\ .�'�: . �� i t \• :� �l + � .�� ��� / �� '`..� `(\ �! :- �`�• � �p �� (�,, , � , fi `:^ r �T u,�. � � i� �•�. � � i � � . � L� \ . :}. ,�. ti - "y?.:r' t `�- ,_ \ ,., ' /`\, � � � r. _ � .: .' ',\� ,f 1�''�r sl !� 4�., ti r � �' '"J � � `'`, � .y�•�.��. 1 F �_ � � � _' ,�• � 1� ���i1`�y� �l .� � :� .� � � � _ —�`TT J••1 �. � t _ — � 1t�'-}� I� �k i � ��:� .. a�,T R , � t3,� . ���" ���!,�1tt �I . �r/�`yF,,��I� ` �l 1 � ' , I•� ' - �� ' ; Ft- _ � - � � . .`') t:1��D� '�..'��l , ` N ,�_ �'i . �( .�1 `I��C' � /� � . 1' �� .��. �, j.2�, � � � . ��' ��,�, � gi S. t� ....�,i ' 1L«� , `�, y_wY ..\�• 7 � _'` ,1' �_=--4_ 4 � . � . 1 . . l �I f"_' I � !.P � � � �r}.� � � ' I ��+'4 { -.'Y�, ��'��� R'i �' ( �.. +� ^�1\�! _�� �. V��1 . •_ �'�. - l _.� 1• � � `�t_,. �"` �'L�� .� `�- � } � ' � _/ -- �, ,� n�. 77'. ' {.:M ��.'�a ��� ,,+.- �� �� _ ' , f � � , ' � .�„��, - fii F , � ,�; ' .. .�, {:1� ``'�� . \ .✓'/ i.. f � , t ,1 �7 S.te� 'ly. ./._ � � , . j.K }~�1� . � f . _ .. 19-`� � i � � . ,� r' k�� �� .,_t�_ `4 ..t �^, `. .�-:. ,} .l. �� \:'�� � � . �i }i.l T,1lA' ,t L Y / �{�� �� `� �1�_ _ " ; ' v/ � k '' i:.�ct4,l . __a :J� r�~\ :. _�:� �. � - t\.�-- ao ' h • , ,�4�+'-:�-��r . '`.. �., .; � ,T ' -- v � • i's.' �' : � ' ;-.�.. �f�� � �: ."�4 ,� .P �� � .� �.� � �'-��la. 1 . .rM ..' � . ` .�'.•\:.�. _ •j': '1^ _ I II i v2 o ti MlE mP�GHA(i��'Z I � � - CDAL MINE HAZARD AREAS 0 � � �'a+o.„,e�� iVORTH � SOURCE: 1990 KIt3G COUNTY SENSfTIVE AREAS FOLIO � �� � r .� ;- ���- _ - � � � _ .� . , � . 1_. ' . �� },L,'� ,,1,` t�,.� .. € � ,.:-t' :� .;�" `� ��" ! � ^�'. ra� ,.�\''�� � : '-,t'� `aS":�s� i L '� �' � .�1. _ \�.`t " �� ��""3.� ' ' • �.� IJn�Sa.! 4�' ' T� ,,I � • �. . �- �1 n �. - � �� `^ / �. _ 'S: `'� t , i :; � - -}.�� w�t� r��' � ��:./' - I . ,v.- �.\ . �f��` � W� ` t g, �. ��'', .. '_` • � -. .. . � i � �Y> �� � � � i) I � . +1 '+ � ` ( -�-�,`� �..� � z� a � . - � ,1 �' � ; �i�i` � ' ,. � �. � k ' :.-�?�.. � �' L �i �� .. y r r << . .�. y {1 • ;�.,. �•.y -t ii. ��t, � Yt` �� \ .'^ , f ' �� l �_` ` ry �. `� 1. ' � �' I �C I . � ,�` . .. '�`� �. .�I,a.,� �� :--� :�.�� •c m. .:1. z ,x.-' -� > �y�•� ."'t, �'•f^ � ,.� ! J'�^ ` • µ«�r;!�,'���t ^6�3�L�-. � � � � .� �" ' � �� � � � A �E �i `��"� �• '"` ' , �� • � � f , ... � '� �-�. -� � ""` ���,��,„� , ���F � �.I� M1 �`_i i �}� '.,,. '"_.^: ?��,� �-., y.� " �.C`a-'`y � \�� �. * "i � � \ ^;_� ` �'lv� f, _ � ti�I , � s�. :: v •/" �':, r ' _ �i.� � ���...��' de� - ;�'.�_ �� � ���i � � .i i �^�� , _ - � � \�y, ��. �. � yj y� F' .�' .,-1� t1�� .�.' #�� ,.� -y _ . '` _ ` `� . :I , I � � —;y_�. ' _" � =iI Y: ,` r r - Y�� � �_ '• "�,– �. S t; �— `� �IT � `���. . s' . 1��'% ��� `' -, 1 1I2 0 9 MIIE ����a�s2 � + y SE(SMIC HAZARD AREAS n r 6 ��'�,� �•' NORTH � ' SOURCE: 1990 KING CQUNTY SENStT1VE AREAS FOLIO :y7C�"�- ��-. ! 1"`4`. / . - . ; � ' , �--�{�" ��.,� ,ti �-�e. - , tr � � � � ` �` . I ` � ;( �. t 1���.�... \. }. � 4 ' r.�'� :,�, ��� � � ` ` }� � r t ' .��. " n»u:�., ' I. �'+ ; �`i�--'_t` . ' . � •� � �y. \� „�v, J .•..�.f� ,-,-, . T�a.. - � t ��4'1' , r , � C�,i'..� �— y �` M1 °—n- �l�"`��, f ��V ' — ��gti.� i.F ': 1• �� � � r '1 �n� 1� Y.���� .: : �T` ..______' . . 1 >� t V � _T F+'�� ` � t ` '1' � ����T� .Si i� �, s � ~ ���J {, -I a � � 9 / � � � �� � :4�t .i� �` �'.�1 ' ' J J K : �. . � �2 1 . . \ —�.� ' _Fl a.�!�t+ �� r� k � � i _ '. �i t� _+l � � . '� ;.,:• .-� '_ �V . � � Ii,t � � �\ . . '!f . -�,c�- � � � �- � . . i; ` -: . . �` �J *. , ' . . ' . 't i_'_� -_t� �� .�. � , . .�i" '�� � � y. , �,,; � ' '► �-� k ,g � C M '�• � � , �'� j • _ H�� ' ,.�. _F �� /� ��� � . � I ��.� S_'1i � .:� J � ' .-. y ,�t�;M � ,�4�w �r�,� � r._ -... ' . � '�� _I �. , . ..' w� ! ��5'�.��i����'+v��� � / 1--r�:{�,.. { _i �1: .� • � . i � �y��h�_.fc,< .�1`4,�, .����` �a� /��{ t.." — ■ � y a J�� �i I� � �i'� 'L ti-y �. � , l e : i� _ �• ' 3 � !s S �`� Z � �:�. � ��� � � --x- : ��- l� y. . - :�n � ,.� ` ��.�> +�iV.f f: � � �` ` ' � �'E �'i.. ' �„" �.cv�� �,k�`'... ��'�'� .�' ` . ' ��\ r, ,'i •. " _ —� _ �_ �—_ 1�' ��'' ti ! �,�.� ' _.. " � � ' . � -� �' �« � �I � i�r �'� �—,—r ; ` i. ���_ ' � � l 1�. � ! ` . � . -�' .`,�- >% �1 ���:; ___,-�'.t- 'I� � `'� �_� - . � ��i �� ; ����� t � .��7 ! . r . , -`' �:r�' .��: ,'���� � ; �. _� ; �_, �--� : �, �� _ ` . �, ,.� , ., _ _ �::,:�-,. ��, , „z o , MILE m��GHq`�Z � LANDSLIDE HAZARD AREAS o � �'�"•�*�� NORTH SOURCE: 199D K�NG COUNTY SENSlTIVE AREAS FOLIQ _..i� � , ' '':"r4.. - T ` .:�' i�',,_,"1i . .•%�. ..\ \ �� '1 � �. ( ���: .I F,.:A� . ,� �-. (' � ' ���.���,1 �: t �'45r�1 � � .1 Z _ } �2� - t y:�. x � i f � ,' �H.�, � °' l � — j ;��s 1`, � �� ,t � �.� � � \ � � ,� r, r �. , ;\i � . .r- ` , � . � � � � - � ��, � �'Ip`�.r l t,r' -S� • � � � �k����� �'� �.�e �� �,� 4 - .. .,� }�� ��� � � � " � ,t .� ,+�'t�?:� . Oty. _+,� � �` e i��c - F . i` � r+d ry t � �' ° - � tr i } ' ` �� 1, � �. �� i �' !n � .� 1 ' �.�j�1� 4�` i. � ;.� � . L , ;- -s.�..''� j'�i��F r ( �;;.s �, r��x � � h ,� �� ri � _ � .� } I ' ; y�� ', s �,� -- ,�\ � : ,�� . , . �'J ' e ' 3 � "��, �.�','l,r ' ,c - •( �`� . ��. ' ���—.. ;. � F�� a r ��� � �-. � r ���� �' ; �� i � �� ' ��,- . .�y '�� _ ..K � '' f,. - � 3.. z�'4�.;� 1" 6 r '�: _ \�:' , . 4 � �t, ��ks+l1.:� �. . � � � .+ '�.�.�i�"�� y� Y - t� � ' � � � ;'� �l , °� .�k � ' - i-+ r r ,Z" `'k . ,j-f'�3.l��, '�� �t�?. ' � ��. ��� � .,`..Iti Y t, y\--��.� � �� y:,, . ` . J9 i t .�'I ����7 ` '���� � ����. l' y '. � .` �+�-T� 1 l� �• .: .� �r- �.i t. _.�-�� � � .��. i.�I lY V � �` I �. . Ft. '�4 'y ,1 _ , .�' _ � ,' �� T�ry � �ti��� 4.._ r�7:- . ? �i _ .Y� . ,�iw.: . �, , i � \ _ � ;.� �9,' � - � .� '.,. '� ,1� �l) l f ��w: i .� .� �' \�` •�� !` �� �i 1: . �. � . . "�. J J .. .. � ��. ..". �� `' � ��2 0 � MILE mP�GHA(�5�2 � EROSlON HAZARD AREAS � � 4�,,,,,a.� N O RTH SOURCE: 1990 KING COUNTY SENSITFVE AREAS FOLIO r�` %� '., �.\\'� / �� r -\ :�`( � �~���� --"�. �\�r..�; o ��! � y,..` _ � ...� 7� .t- y� 5' 'i J .. �^ .. `�.1��,.�. \t , .� � /: �� r\,�_ ' �� r ',� 1��I; { �. \; �^ r _ �Y' � :il-`' .i- � �i � - � V... '� ` ' 't _ �. . . _�. . \ . '� s:r __ �� , � ,`S �. '!��,.. `� � �� �: / ���ri � � .i! � , w '\. .� . ' `� „r .���'s ' ; � � . , _ il Q � !n�1 �:�t � ��. #, _�, Z - �'^!`" � ��� -,'� v �° � RI'�:. ��{�' :{ 9 'n, ` •�.• i ) -. ;,*1; � �, , �� ,► +� t� ' �' u 1 dY � �_ �^ , .� d � ';` + r � � , ��� � � \ � ,.r.• � � S , ` ' �` � .i ,� .-�" '.�J -i��, �� ! � _s •f f�r�a`� � . r -'�t. �i., �,' s •, t} � > > '+� � `\\ � \ L py � :T ��' , "`? ���_-,.3�r`�.,�,��1` }:� . I � �. `� 'Yt� � �r. 1 , i (.,�,�'�{, f �'i�.a�'l ✓i ��'y, p� 4 '. f'a+'n� ' [1 w � ,��� � �-` � � � t` ',', �'. �` . , y� �� . . � ', E � j 1 , A`� ,;., _ `"`-2' � _ , �_: � yY:{ - ;' � - , ,E': �{ �. � - - n �.�.� �� i9i . � � � .:"`t _ .�' ` _4\J� _ _ , ,�`: * . '' .1 l � ,. ; �: '� Y• � � � - _ !� _y�'�. �_ _ .��; .' �- _ � ? 1 � � ,. j, , T `` � , s • � ' . I `�`.L� _ rF �'�' .\ � ���'.i _ G.s� �\ � rs�. � ,c �. :� y , - . �'!=4� — \ 'i s � .. .1 ir _ `` /, •� r j ' � � �.. .. � .,- . .. . •�Sri ,� a i 7 1!2 0 1 MLE mP¢�,Havs�i � STREAMS AND FLOOD HAZARD AREAS � � �,��o�'' NORTH SOURCE: 1990 KING COUNTY SENSITIVE AREAS FOLIO �Y - -.� .I l _ �Y. .'�¢��_�.�. `vi��. Y•,�-�ti� �. 1 1� 1 . � � ' -� � - __ �, '1' .� �'s�.'j �_ --,.d ':`� � � �� z,.. , , n � � � ` �,�,,, 'j�,s� � ,� � ���`� t `:,'f ,! �--;,. � `A , ��A �r , ,. �'� � ,S, - 1 � � �� :.� - ' �_`�� " �-� � _ . K 1 3,' `�s `` a � S `�- Z .. 2C4 c ;? '` -- � F4' � i �� ��� �t'b _� � «l.) �b _ � ��. � � , �,� 4i ;�, � ' � ��� ,; . � ,,t - :, �, �i, , -. � ��,� �''•, { ;,;.k� � � .� r .: � i �,�; :�_p. '�l/,�.'. �"x' .� x �f� • ,�.' � .J-- `� �V q �,: � ;� `c , �c, . ,'1 � � ��_ �... � �� �i v . � .� ,.. ,E, 1, ��,;• x��'�,�-�?�nW��`�ed8r �' . i�. . \. � a � . - � �;; � �� �� r- " , h7 � � '�.- ` �'�-�� '� �,� � .�.. S } ^ �, ��... � 5� � , .t_. ., t' ti � v' .� . .. ' :�f •r� -_i 1.a �� �t,.�Y ..'�. '• .•�: r'1�•.•_.;. ..l r , . . �-. ` .�� . • .�•-�� �- _��^';� „t .� ,t �� ,��j�''y� �� -? � �� ��y� ^�� � ' �� } � ,o r v a .�, �Z � :� ��s-Mt'� - ..y "�`������ � .. 7l - `t. r 'i`�� ' . ' .�. � ,� � � - .. ��' � � ' :� �t ��'j� ^� .. . � \ �• �%� - �: �. '�y,�.r` •y �,.;��.�, � �.,.. � � i.���� ` � � :1 �': . _ '�,1,' i �t?7� . ,�'`y''j�r Y�� 30 �� �+ .' ,r n : �' � '�; •.1, . ;� //p' 'j r ... ' � ..�, �,� �� �a.� .� !` w .. . � ( .:�f� .`^ •.�J 1 _ I�i � �� � � MIIE ��GHA��� - � WETLANDS � �,,,���� NORTH SOURCE: 1990 KING COUNN SENSITIVE AREAS FOLIO EXHIBIT F , SC5 Soils Map � _ � � <--r'm�.- ,.-� •P*�+R! �__ i F}.a� � �. ��' • } / _ - . i t r�Y���� • 'X �� � ��� r�M`Y�`"� �ip�r , ' q_ / .' ' �.. !� A '�{it��� COVr {,` . .tT.'".'✓ 1.��x ' ( :.' i� Cc +�,i 4v �A Se . iY'4r ,pTcp t' � xt �t '^,� i r a ti �!� � Rh+ ° i t�1a � +�^ �'i � . � �" • �-;� � � " �� ��#� . t �!•� �_' Pv -- . � s }'c . N e C iy � _ (' . p 1 �o� .. INa jr� ;�H• y '� ANg � �.t; 'PY 'y = �:� ul• '' � PC -.. __a. , ����\a f n Ot- Py $h I � p =_ ,y � � � �o= I �� �r I r I .'�C a`z9 Akf -.a.. ., Ng = � . I � ' { � t69 ' . I � i_ . � .. '� � �;' E� I j�D AkF � B � . 2 � � __ __—_� _.� ' � — -- .� -— -� - ----:--s_ ,i- — - _�_BMLj'---o�4� — � e I -o'--�--•---- `_--• , AgC_�_---- `-- � --•__ 1 qgp. ' � . � AkF �� 1 I F .� � � L� Ag�,`{ f1m8 � Ag8 _ —_F'1PELfNE_ ABC_ - ] ' 27 ! 2 ` 492 I � I ' `� • ��� . F,�o : � -�. . � .' N°. U Sk I `• ,P�ti� ': AgC � l � . GH'4(i �P¢ � '- � SOILS MAP ! � � `��,„, Qsa� NORTH � E�HIBIT G Assessor�s Map r•� _^ . � .., ' - � ' .. :�M�ff y``s.. " y `�t._ • . � f� T.�r.!'"�t:� , "• { ) j � ' I f �r14 �..,.... ... µ_ - �'y,.�!i' �.. �. . � \ �r„�` .... ,. {� ♦ ' :1 � ' . .�^? �r� ;Y�/��j '�� .. _ _--1%` � :1,: I� .. �:'J;f� ` � : _; � � `~; - ; _`}r - • .. �e » �. `, ,�r� !t!_�.;! �� . -:-r - -���_.`J � - ._ � ;�' �i" _ erWe ��' . r^ `,��, �`.Z�w�"'•+_" • .i � ��- �' '` � �� _, 7 j�. .. �'- _ ` `.'=,^-. � � 5�'�i� .. ... ' _' �P'�. �� a I�� . j ' . q.��J �. ".. ''�; �q�� ,i� � ; :t . ,','^'�, i " '� i � 1 ��.v . - ... " ___."'• � , _"' "'..._..__ yr � 1'.. ... ._. _. .. "_ _ + - . ��• �• � ya , ,� "- , tP i J . � �f '�. •�• � �.. -,, �`; , �3�� a.v��r ���.... 10CSOLMS5010 70010tl1�m0� '.__..__ '�'_"_�,.r�. � 1 ` ' - ---Controt ---�-Lat Parttl 0( — � OM1Msy —Easernent ..--,-----.-- -- r�MY °la¢ed Mapr Nunber --------'-'---- --------' � ' [ ' ' .. -. i StrorlPht � OovertmenSot --Orpina�snorlPix Hyero �'H REFERENCE: King County Department of Assessments(April 7,ZOOB� —P�°� —�^°�^�a^��� FOr' Job Number GHAV 1821572NDAVENUESOUTH NEW LIFE CHRISTIAN CHURCH 11706 � �►► �� KENT, WA 98032 Scale:N.T.S. m - � z (425)251-6222-PHONE RENTON, WASHINGTON o`- � � (425)251-8782-FAX Tltl@: + ����► .= ASSESSOR MAP �r �� CIVIL ENGINEERING,LAND PLANNING, /~r'[NGLH� SURVEYING DATE:05/11l09 v.�,1�000sl��705�exnibatigroplvcri�t 706 e�dnbtsccY I i _, �� ������������ , EXHIBIT H , Wetland Inventory Map �:;:�.. -- ..�:.;.;Seatt%::�: ••�':: ....�'°�� :.�`.°Q.. � i:t':ii.�r^ • _g\'� �y, ..: .::::::::::::..... .. �f. B1aC�.�fvez':�� ' '�4t ,�},�� � ..:'�':Is�laad . ............:::: . ' J'' �:':::'::•':::::';;;::;: .. ..........,. . . , .;: ;. .. :.; �::::::.5� .:.' $a.. :;`.-;;:`:� .%ast:Leke....::� � ........ ��' 20 :�Reriton��� 'Washiagton --�_._..._' .::::;:::::�:::. Soos Creak��4 22 2 ::':. .��.�;::...,.'' �A� �ti 23 � � ��r�y ' 25 �� v � � 16 6 Map Creek ,�. �� �. Q�� (�1 S � 1 40 38� i4 41 2$ � JenkIns Creek 42 29 � \b � �. 32 30'i 3 � 76 4 31 i2 61 .. Co C�a � �'54 �6a� / �3 _33/ . . . S � Black.�::-�:�:::�:;� � 79 58♦ 4�� Diarrtond:;�` 77. 73 �8 9 5t� � '�::::::! $�gg9072625 97 ��' $69 g�p 71 7�saquah Czeek s2 G s3 93 d sa 82 sa 94�e85 I.OWCr ��bg'19' Middle 87 (�ed�. ��4 Rivar yf~g River � -c vJ �S . �q,t ` � � eV bl Raging Rtver 'O �V Upp�r � Grcen LiPPer Cedar Rivez� O Rivex � � Mile N 0 'rS t � � Lower Cedar River Cedar River Basin " .N. •.�.^ . t �;.� s�, ,r s .-, _.�/i�' �, - .� +'s +"�w,?!S,'#±'^o�. .,,,[ �� '• -�ic:.r: `�`� � e•<a.r�` ..��M:. 1 � .` �+ " �'e ..���s�5 . r .. .: ., tl +s� .. i -ti+jf u+r�'ci�i:<P r"a.c'f_�.�+'.T�..'���. .9F���is'7'�� ' � -�• . ��� M �.T�L iFi ��l� '�"q'� � '-.'`�c+i-� .. .�'-s�'W � ' �+ �" �`.�Z4r 1r.�'� . 'S' < � ' � '� ' s , �:j�� : T r ,�„a���� �'f�'`.� ���,�C�; # '� r % �'�_;'�`''�"�'-`��_'"'�r � �� R � ,�E� �� . � - �s '� i- - - v , -i�.•' -'.s,^�'c.'L ' '�f H ' Z`+�:��,� �. a � �b'�uY �_�c.. �i� �.1�•�� -3�.���t < `'� ���. ' eH. �.�s. �• � �y��� .��� �7. ����Q�:s .,li�� _ t S �.��. r�.�� ��:f��'irs����4 ` . .�r � . �� �'�1�. , r. sX4y f'i i'�. , `�� �� ��Jk js'c? { fi r E �„�. ... � �� �� � � �t �"SS-� �.`: �t� .�_ ..�.�;�::•I "� `%''�. ���: �i�.'�+'' f�"'�' ' ,fi 7�v i v�'"��;+z`4�' ��'����8�; �y T 12�Z st.�e `y � �„s• ;' ' - .'ti a. » r a,�"' Y- , r L 3 .� c , �S, f' 1!Y l �.;9� ? b � t�;�� Y : t ' Fti. �'' o l � � � +�.,' - . � }� �� '� �� � �a 's K���f J� � y� � ` si �: � _ IC �' t S.r-. '�r3� r�i•. � r�` � � . ` � ' �� . ty�`t4 `_ � � Ti .y,�� �t T� � t' L . �!> 4 ' }-. 4.:>. t. _ y� ' . . Z�:. . ; %.. i ` � ,r: �. - �. r; '�� :'y� � � . �l �,� . � . 'S�� t 1� �i.:' �"� ��. � � +- � •� ��- ` � • ' � '� � �1�� . •` ' . �`i v:. ,.) j�+.� sM �� -t T '. . � . �'�' 1('� . .�. .* �R� .lr .T 1 :li ► •�\:` ��z..��5�{ � { �f� ' - r.. , � ; � ` -�� -Y. k '. ,�,� >. ;• � :r .: t�,. � �. .:_�' ' < , '" • ' -• .a }} ��g` � � .� y •r ' e L• �� ,t�'�' ,�'µ •'1 Y Y �.y� �4`- y t .: { , �, S _ J•. .' Yy.� , 7 i•. '� �.• ��- A� . �2f } . _`Y- /�� ���� �'p(. U . . � ,� �,� � :� 1 . ; ' :,�,�,�' .lf �1 `i \ '. . ` � � -. � ' •� �. i .. '�i1� �, � �� � -��. ,y,. ���� `�i �.tl � .� . � ... ' ,-� a�. ,y .-�'�'�' � •Iht+' ;�j.� ��i4 � � 6 ` :. � � '`�' a '� - �y; ��� .''�,°;";� f'- � l�i"s•/� '/{'i.• J'O'� .�ts{'f �? . �� (�s� 3 - � t @ -i� ^+ `9� +� f.:r'•s�� s ��+ �. � �'�?t d � i �' �+�+�Stsv'``� ' � +• � �'• .�•;rt�.r �rx r.a�fi �/ .�C�yw� '� i' :,, � <' :v i � �\ r � .i� �z� '� �'f`, s I sv t�c��- � '+��L� � 'k.. ' ' '�i1 t i ..; t i�a.' �' ••� y�;y��.'�.�� .a��y''�` e� ��;�'! . �� � `` :\ � :��.��y`,� t� r• ' r'..r�� � �f jl�p ..�.� ,. . � :a . -- � a 4i � ��<y�,:,t �t�'��. �,': .a�- � � „ �� :S:�,r•,i� •��� .�t�,j y ..� ' � ' p y� ' . K r� i> ' 4 1, t c` �� = c :. ��v,�tt�� .z=: 'ti,r�� j►^r�' ti � a �'•�` ��lw i '' = C �l� `r .� -� !, ;�" .. '� �.�'�'i`�r' �+t� iy 7�' R, ' , t� -< � 1��Y � �� :�!�r� .�� . + �Y' .. •l�.i Y, �� -M�-�ti � � t ,s� #A L ,P'". l y !� ��-. '� r s l.� t � a°h} a. S• .li � �fsi y. ��•� ,,�„i.. y . . �� 9Nt�J+.s at � I' 6 � 2 �`���r�f� ��ft•.. �..ait"�tt '��. .if,:�14- tA�� S'!5�,��r/C..{1 'r.. . .A -;�� �-°�,.� ��-_ .. j ` `� � -��t�1��i? 'F�v ~ ';AT�:.� ��.�f�•�'���S_������� � �f�'s �'f� ,�{�� ' }�F : � - .-.� . � k ..� •.„)�'i.y�T r ,.�� -�� �Y7FTM• '= x 5 ! , , .�. ,� fe' �s rs ;Y' . .' `r�'�+. ..� ( • 4, .. �l .•�iC .iF�''�. � '.�� r��Nr�:� t 439`��� � :s� .' -� 'ta { ' �� 7. �F i. �,. � � r'/ r "�a�T r � j�)iF J'"�;Y .; S �}� � . �. J,. �3 � ! h . 'Y . a� _'y� r'r .. `♦ '�) r-f �,y •yl�i�7�^.J.✓ • Y: si' � �\-'Fi:� ,ni t C,.�*s � +3 �}: .� �..��'� h • f�`�:.a"���sY++'� �j�„� ..`S`'� . „ ��� � •''Y''7/�� .`-� �,`�':�ii:Yi� i: ..�,� �.;.,,. �,: ..: a• e r .,. •'T.•+1�wy.,:y,s4,',e�!..'lC :V' t:._ �s1i :�#a�� "�' .�.l,�ss�y�= 'i Y .°�. .lj. sK• +a�ra'��� ..,�e�, i - .,rt i"' 1,��;�' �' .�V'�t.' ./ ir ';:R�•n'!.-��� � � i. :1 � � r• � /! . � • - r. � �• . . • � • � . - �. � • . . • ' � � i a • • � � � � � 1 Y' � � � � � 1 1 • � • �• � � f I '/ • • Lower Cedar Ri ver 17 OBSERVED SPECtES: (refer to list in Appendix 1► Trees: AK - Herbs: YP� ZP, TL } Shn�bs: SX Sedges/Rushes/Grass/Fetn: L M Birds: GH, MA, tCO, VS, 8S, R8, SS, Gf Ma:.unals: Fi�: Other: RARE/ENDANGERED/THREATENED SPECIES: (refer to list in Appendix 2) Reco�ded/Observed: PoterKial: SiGNtFICANT HABlTAT FEATURES: OUTLET: Type: Overland Undefined Condition: Outflow emers: POTENTfAL STURAGE: Existing Active: 1 ac. t't. PoteMial Active: 1 ac. ft. GENERAL OBSERVATIONS: Horse pasture surrounding. =TLAND EVALUATtON SUMMARY: .� Data was co{leeted in the five categories shown below. Within each category the data was evaluated to produce nume�ical values. CompOsite values for each category were prvduced in order to compare each wetland to other weUands in its sub-besin a�d in King County. The result of that eompariso�was a pereentife rank. The percx�tile is expressed on a scale ot one hundred and i�dicates the percent of weUands that scored equal to or 6elow that particular site. Fo�example, a percent'rle rank of 80 under wb�asin means ttiat tfie wetia�d scored equal to or better than 80 percent o/ all sites within the sub-baain for that evaluation category.NOTE: The percentile ranks are vatid o�ly wid►in the ind"wi�al evaluation category and are intended solely tor reference and comparison. Rank Evaluation Category fby percentile) Sub-b�sin County-wide Hydrology: runoff stora9e potentiat,water quality,potentiaf lor minimizing damage Z 8 in downstream areas BiOlOgy: quality of habitat,abundance and diversity of plant and animal species j8 40 V isual: diversity and contrast of wetland and surro�nding vegetation, J( S] wrroundi�g tandforms Cultural: types of access,proximity to achools/institutiw�s,overall 77 C2 environmental quality EOonOmiC: presence of agricultvre/peat extrxtion,anedromous o�game (ish, b 9 S 1 game birds or mammals of commercial value WETLAND RATING: Each wetland rras assigned orie of tfiree possibte wetland ratings. The weriand ratings were deoemzined by examining tfie scores of selected �M�entory tasks, specifrc data or percentile ra�ks for individual evatuation categories. The criteria used to auign the wetland rati�gs are � ribed in the Introduction_ For each rating a number of speci/ic guidelines for new devetopment i�or adjacent to wetlamis were prepared. � .e guidelines are intended w assist in carrying out King County's Se�siYwe Areas Ordinance and other wetfand poiicies. They are induded in ' a separate report titled"Guidelines fo►KiagCounty Wetlands'. Wettand.Rating: 2 EXHIBIT I . Basin Reconnaissance Summary Report RECONNAISSANCE REPORT NO. 13 I LOWER CEDAR CREEK BASfN I i � i � JUNE 1987 Natural Resources and Parks Division and Surface Water Management Division Kino County, Washington �� c�,aiy �,t� Tim Nilt King Couoty Couacil Audrey Gruger, District 1 Cynthia Sultivan, District 2 Bill Reams, District 3 Lois North, District 4 Ron Sims, District 5 Bruce t.aing, District 6 Paul Barden, District 7 [3ob Grieve, District 8 Gary Grant, District 9 Department of Public Works Park.s, Plannin� and Resout+ecs Don LaBelle, Director Jce Nagel, Director Sutfaoe Water Maoagement Division Natutal Resources and Parks Division Josepli J. Simmler, Division Manager Russ Cahill, Division Manaber Jim Kramer, Assistan� Division Manager Eiill Jolly, Acting Division Manaber Dave Clark, Manager, River �C Water Derek Poon, Chie[, Resources Planninb Section Resource Section Bill Eckel, Manaber, Basin Planninb Proaram tarry G;bbons, Martager, Project , Manabement and Design Section , , Contributing Staff (:ontnbuting Sta[E Dou� Cl�in, Sr. Enc neer Ray Heller, Project Manarer S Team Leader Randall Parsons, Sr. Enbineer Matthew Clark, Project Manaber Andy Levesyue, Sr. Engineer Robert R. Fuerstenberg, Bioloaist � Team Leader Bruce Barker, Engineer Matthew J. Bruengo, Geoloaist Amy Stonkus, Engineer Lee Benda, Geologist Ray Steiger, Enoineer Derek Booth, Geologist Pete Ringen, Engineer Dyanne Sheldon, Wetlands Beologist Cindy Baker, Earth Scientist Di Johnson, Planning Support Technician Robert Radek, Planning Support 'I'echnician Randal Bays, Plannin; Support Technician Fred BentEer, Ptanning Support Technician Consulting Stafi Mark Hudson, Planning Support Technician Sharon Clausen, Pianning Support Teclinician Don Spencer, Associate Geolobist, Carth David Truaa, Planninb Support Technician Consultants, Inc. Brian Vanderburg, Planninb Support Technician John Bethel, Soi1 Scientist, Eanh Carolyn M. Byerly, Technical Writer Consullants, [nc. Susanna HorniM Technical Writer Vi�nia Newman, Graphic Artist Marcia McNulty, Typesetter Mildred Miller, Typesetter Jaki Reed, Typeset�er Lela Lira, Office Technician � Marty Cor., Office Technician P:CR �rAa�..E oF corrrerris L SUMMARY i [I_ [NTRODUC'1'ION 1 III. FiNDWGS IN LOWEK CEDAR R[VER BASIN 2 A. Overview of Basin ? B_ Effects of Urbanization 4 C. Specific Problems S 1. Drainabe and floodino problems 5 2. Damage to property 6 3. Destruction of habitat G IV. RECOMMENDATiONS FOR ACT[ON 7 A. Reduce landslide hazards 7 B_ Reduce erosion and flooding 7 C. Prevent future erosion and fiooding with appropriate analysis, 8 planninb, and poiicy development D. Siop present (and prevent future) damage to habitat 3 by addressing speci[ic problems in stream systems V. MAP 11 APPENDICES: APPENDIX A: Estimated Costs A-1 APPENDIX B: Capital Improvement Project Ranking B-1 APPEDDIX C: Detailed Findings and Recommendations C-1 I_ SU1�+IlNARY i The Low�er Cedar River Basin, in southwcst King County, is unique in its development pat- terns and the associated environmenta[ problems that appear throughout the basin. Except � for the city of Renton and areas on the Cedar River Valley floor, most of the development in the basin has occurred on the upland plateaus. Most o[ this development is recent and primarily residential. in addition, the plateau is the site of numerous sand and gravel mining operations and, in the southern up[ands, an abandoned coal mine. Peat is atso being mined north of Otter Lake. In some areas livestock are being raised on smail farms; there are no major crop-reiated agricultural activities in the basin. The e[fects of development are most apparent where storm dcainage is routed over the valley walls. Impeivious surfaces on the plateau have increased t6e cate aad votume of , sto�m ruooff, resu{tin5 io sub�stantial erosioq siltation, and fiooding below. In addi- tion, enosion aad siltation bave damaged or destY+�y�ed 6abitat in many tributaries, threatening the survival of fish. Habitat and water quality throughout the basin are aiso threatened by the fitling of wetlands and the presence of la�ge amounts of � tra.sh in some streams. The reconnaissance team noted that the Peterson Creek system has so far remained in its natural, nearly pristine condition. Maintaining this quality should be a high priority in future basin planning capital project programs. Recommendations in the Lower Cedar River Basin include 1} designing and 000stcuctiog appropriately si7�ed R/D and other drainage facilities; 2) estabtishing stricter tand use policies reoarding floodplains, wetlands, and gravel mining: 3) oonducting more detailed aad eompreLeosive 6ydraulic/hydrvlog�ic analyses of proposed developments; and 4) pr+eventing damage to thc natural drainage systcm. The field team also recommends 5) restoring thc habitat of several tnbutaries (e.g., cleaning gravels, revegetating stream banks, and diversifying streambeds for spawning and rearing) as weU as 6) protectiing t6c nearly pristine quality of Peterson CreeJ� Q. QV'I7tODUCT[ON: I-liscory aod Goals oE t6e Progiam In 1935 the King County Council approved funding for the Planning Division (now called the Natura! Resources and Parks Division), in coordination with the Surface Water Management Division, to conduct a reconnaissance of 29 major drainage basins located in King County. The effort began with an initial investigation o[ three basins -- Evans, Soos, , and Hylebos Creeks -- in order to determine existing and potential surface water problems and to recommend action to mitigate and prevent these problems. These initial investiDa- tions used availabte data and new field observations to examine geoloby, hydrology, and habitat condi�ions in each basin. I=indings from these three basins led the King County Counci! to adopt Resolution 6015 in April 1986, callinb for reconnaissance to be completed on the remaining 26 basins. The Basin Reconnaissance Program, wfiich was subsequently established, is now an important ele- ment of surface water management. T'he goals of the program are to provide useful data with regard to 1) critical problems needing immediate solutions, 2) basin characteristics for use in the preparation of detailed basin management plans, and 3) capital costs associated with the earty resolution of drainage and problems. The reconnaissance reports are intended to provide an evaluation of present drainage con- ditions in the County in order to transmit information to policymakers to aid them in developing more detailed regutatory measures and specific capitat improvement ptans. They are not intended to ascribe in any conclusive manner the causes of drainabc or erosion P:LC 1 Low-er Cedar River E3asin ' (continued) problems; instead, they are to be used as initial sutveys from which choices for subsequent - I detailed engineering and other professional environmental analyses may be made. Due to the limiteci amount oE time available for the field work in each basin, the reports must be viewed as descriptive environmentat narratives rather than as final engineering conclusions. Recommendations contained in each report provide a desrription of potential mitigative measures for each particular basin; these measures might provide mazimum environmental protection through capitaf project construction or developmcnt approval conditions. The appropriate extent of such measures will be decided on a case-by-case basis by County offi- cials responsible for rcwier�inr applications for permit approvals and for ehoosinb amona com�ting projects for public construction. Nothina in the reports is intended to substitute for a more thoroubh environmental and engineering analysis possible on a site-specific basis for any proposal. Ili. I'�IDQVGS �V LOWER CEDAR R[VCR E3�SQV The field reconnaissance of Lower Cedar River Basin was conducted in Januarv 19$7 bv Robert R. Fuers�enberg, bioloo st; Bruce L. Barker, engineer; and Lee Benda, geolooist. Their findino and recommcndations are presented here. a Overview of [.awer Cedar Itiver Basin The lower Cedar River Basin is located in southwest Kino County and is ?7 square miles in area. It eatends southeast from the mouih of the Cedar River on L.ake Washington to approximately river mile 14.0. The boundarv to the northeast is marked by a ridbetop connecting the city of Renton to Webster and 1=ranklin Lakes: the boundary to the southwest runs a�ong Petrovitsky Road to Lake Younbs_ Renton is the only incorporated area i� the basin. Other population centers inctude Fairwood, Maplewoai Heights, and Maple Yalley. Except for the city of Renton. most of ihe residential concentrations are located on the uptand plateaus overlooking the Cedar River Valley. These upland developments are recent compared to the smaller estabtished communities on the valley ftoor. The basin lies w-ithin por�ions of three King County planninb areas: New-castle in the northeast (which includes Renton), Tahoma-Raven Heiblus in the east, and Soos Creek (the laroest of the three) in the t�CSt. Rural areas exist on the vallev floor on both sides of the Low�er Cedar River, from approaimately river mile 5.50 to 13.00. 'I'hese are lin�ited to pasturc;land [or ho►ses, cows, and some sheep and severat small "u-pick" fruit and ��e�etable Earms. Similar areas are laated on ttie southern uplands above the rearli from river mile SSO to 7.00 and in the Lake Desire-Otter Lake area. The plateau is al.so the site of sand and rravel mining operations and, in the southern uplands, of the abandoned Fire Kino Coal Mine. Peat deposits exist west of Lake Desire and noith and south of Otter Lake, and peat mininp is being carried out north of Otter Lake. Present zoning allows for urban and suburban densities throu�hout much of the basin. particularly on thc upland plateaus and in the Cedar River Vallev from its mouth to appoximately river mile 6.50. Population p�njections for the year 2000 in the three plannibn arcas containing the L.ower Cedar Basin are over 3I1.000; an increase of 47 P:LC ? Lower Cedar Rivcr Basin (continued) percent from the present. Most af this orowth witl occur in the Soos Creek Planninb Area. Dominant �cal and geomorphic features The geoiogy of the Lower Cedar River &�sin is diverse. Geolopical formations exposed alonb the val(ey include sedimentarv rocks, undifferentiated older glacial drift, eartensive ground moraine deposits, reccnt alluvium along Ihe Cedar River, and landsfide deposits alon� the river and its tribu- taries. The sedimentary rocks, composed o[ moderately dipping sandstones, con- glomerates, mudstones, and shales, are exposed iocally along the cliffs oE the Cedar River Valley near the mouth of the Cedar River. [n addition, the Renton formation, composed of sandstones, mudstones, and shales with periodic deposits of coal, is also exposed along the lower portion of the Low-er Cedar River Valley. I Undifferentiated glacia! deposits Eound here are compcxed of three or more till she�ts, ' glacio-fluvial sand and gravel, glacio-lacustrine clay, and sand, and non-�lacial sand, clay and thin peat. These lie over tlie sedimentary rock formations and are best ezposed in cross:section along the clitfs of the main valley and major tributaries. The morpholoo of the Lower Cedar River Basin is dominated by the valley formed by the Cectar River. Valley wa[Is are steep cli[fs Cormed by landslides in glarial sedi- ' - ments. A once eatensive and meanderin� River, which created a w•ide vallev floor as it cut its way w•estw�ard, the Cedar tociay is diked for most of its length Ihrou�h the lower valley. A narrow but extensive band of landslide deposits exists aton� the steep ; cliffs of the main river and its major tributaries_ The landslide deposits consist of deforn�ed bla:ks of glacial sediments and co(luvium derived from slides or mass flowage. such as landstides and debris flows. Recent al{uvia! deposits fill the vallev and major tributaries. Small, composite, alluviat deb�is fans exist at the mouths of the largest trit�utaries. Cfosed depressions, principally in the uplands, have lacustrine and peat deposits. Tl�e Lower Cedar River Valley has a high potential for erosion due to sieep slopes and the eaistence of a clay layer that promotes soil tailures. In addition, tl�e confined nature of tributary channels between steep hillslopes promotes bank erosion durinb hibh ' [lows. Numerous recent landslides �re evident along cli[fs of many of the steep h•ibutaries and alonb the main stem of the Cedar River. These h�ve been acceterated by the removal of vegetation and the routinb of concentra�ed storm flov�s over steep slopes in areas where developinent has ocrurred. I-iydrobgic and hydraulic characteristics. The Cedar River Basin is composed of a complex drninage network consistinD of the Cedar River and 17 triUutaries. The lar�er tributaries begin in lakes or wetlands on the bluffs and flow throuch relatively flat, stabte channels to the edre of the Cedar River Valley, then plunge down to tl�e vaUey ftoor throurls steep, emdible ravines. Tributaries of this type such as T'rihutary 0�04 (with headw�aters at Wetland 3111) and Tributarv 0323 (which begins at Lake Desire), are found on the south side of the Cedar River. Another tvpe of tril�utarv cotlects surface n�noff from urbanized areas, pastureland. and woocied areas. "Fributarics 0302, 0307, and 031? are examples of this type of �ributa�v. Tliey are intermittent (dependin� on rainfall), shorter in tenolh, flow tl�rouoh shatlower channels that are steeper at the bluffs and transport more material during times of P:LC 3 Lower Ccdar River Qasin I (continued) I high flows. Some of the worst probiems located during field investigation (see Appendix C for a full listing) occur on this type of tributary. Catchments 5, 6, and 12 have very infiltrative soils. Urban developments hvae utilized R/D poinds to effectively infiltrate all urban runoff before it reaches the vatley hellslopes. The infiltrated runoff then reappears as springs. Two targe takes (Desire and Otter}, together with four smaller ones {Shady, Peterson, Webster, and Francis) lie in the southeast ihird of the basin. Numerous la be wetiand areas exist in this section as welf. The Celd team identified 10 potential wetland sites that had not been previously identified in the Sensitive Areas Map Folio (SAMF). The system oC lakes and wetlands in this area effectively buffers the high flows drainino to these tributaries. Habitat characteristics. With few exceptions, usable iish habitat exists only in peren- I niat streams (i.e., Trib. 0302, 030�, 0305, 0323, and possibly Q303). [a other streams (e o., Trib. 0303 and 0310), steep gradients preelude fish use. Steep gradients also rc;duce fish use in the perennial systems (except for Trib. 032�c). Habitat is in various staoes ot debradation in Ihese svslems; pools are being filled and gravels and debris shift reb larly. [n TriUutary 0328 (Peterson Creek), liowever, l�abitat diversity is extensive, and the channei is not seriously degraded. At this location the field team . observed at least three species o6 salmonoids. In general, the most diverse and least disturbed habitat in a tributary system occurs in I the large wetland areas in the southeast third of the Uasin. Usable habitat for anadromous fis1� is found in the low-gradient portions o[ streams where cliannels cross the Cedar River Valley tloor. In these reaches, however, only spawninb habitat is likely to be availabic, as the pools and woody debris necessary for successfu! rearing either do not eaist or are quite limited. Eacellent spawning and rearing areas eaist where pools and riffles are extensive, instream cover and bank vegetation are intact, and diversity of habitat types is abundant. Q. Effects of Urbaoization in t6e Basin ' Floaiinb, erasion, and the degradation of habitat associated with development in the Lower Cedar River Basin are most apparent where development has eliminated vege- tation along the edpes of the vatiey and where stormwater has been routed down channels and swales. The removal of vegetation, sucfi as trees, above and below• the edges of valley walls, as well as the d+xharcing of stormwater over the valley wall, has resulted in tension rracks and lancislides tliat are endangering some houses. The sedi- ments from these failures are depositing in streams and on valley floors and damaginb fish habitat and private property. Dischargina stormwater from increased impervious areas into steep tributary channels and s�-ales is seriously destabilizing channets and vafley w-atls; this in turn results in channel downcutting, bank eivsion, and landslides. The sediments from these problems often degrade fish habitat and settle out on pri- vate propertv alonb the valley floor. Two serious instances of development-related erosion occurred during the November 1936 storif�: 1) culverts reroutin; thc stream were plu�ed, causing the formation of a new channel that destroyed portions of roads on Tribu�ary 0314; and 2) new, uncom- r:t_c a , Lower Cedar River Basin (continued) pacted fil} adjacent to new residences near coltection point 5 was w�ashed partly away durina the storm, causing landsliding and wllying. Future problems will be similar to these, as commercia! and residenlia! developments increase fiow rates and volumes by decreasing natural storage and inCiltration. This is expected to occur if wetlands on the upper plateau are encroarhed upon or lost (e_g., on Trib. O.iO4 at RM 2.30 and on Trib. 0304A at Rm 1.60). 'The preservation of wetlands and streambank vegetation and the attenuation of storm flows are esscntial in this basin. G Spocific Problemc Ideatilied The steep valley sideslopes through which streams pass and the often dense upiand development result in a number of similar problems that repeat tliemselves throughout the Lower Cedar River E3asin. The most sionifecant o[ tl�ese are outlined and discussed bclow. 1. Uraioage and [looding problerns are often the �,It of scveral coaditions: a. Uadcrsi��ed culverts and inadequate entrance structu�es. The most notahte area is on Tributary 030b at river mile .:0, w�herc a culvert here was - blocked by debris carried downstream by the stream and raused erosion and flooding oC Fairw•ooci Go{C Cour.se. The blocka�e was compounded by the fact that �he culvert was undersized; the problem wf11 worsen as flows increase from upstream deve[opment. b. Serious instream erosion and svbsequent dowostream sedimentatioo. These have been caused by three main factors: t) runofC Crom residential developments on the bluEfs above the valley, 2) compacted pastureland due to livestock, and 3) runoff from impervious areas originatinb at gra��el pits. These problems wifl continue and worsen untit mitiDative measures are taken. (See Appendia C for speci[ic examplcs.) c. Undersizod rerhannetized streams. Tributaries on the vallev floor are too smal) to carry the increased flows orioinatinp in developed residential areas along the top of the bluffs. For eaample. Tributary 0�02 at river n�ile .35, tl�e channel along Maplewood C;olf Course, overtops and Cloods during SIOPIl15. d. ('.00struction ia wetland and floodplaen a�eas, Manv of the �•etlands on tlie south side of the Cedar River are peat bors. and roads built throu�h Ihem continue to settle each year, increasing the amount of floodinb on the road_ I�or example, the road crossino w�ith Tributarv 03�.�c6 north of lake Desire will experience more severe flooding as the road settles. c. Discharging of stormwater at tbc tap of steep banks. At river mile 2.30 on ihe Cedar River, a trailer park (constructeJ on the ed�e oC the cliff) discharges its drainage down the valley w�a1L Incre��sed flow�s erocie the steep valley, deposi�ino sediments on the vaUev floor, blockinb channets and rausing fiooding. These proUlems witl eventuallv stabitize, but only after a large yi�antity of soil has been erocied. N:LC 5 L,ow-er Cedar River [3asin (continued) 2 Damage to property `s being caused by thrce factors: a. Landslides and potential landsiides. Landslides are acce(eratcd by the remova! of veoetation on steep slopes in preparation for residential consiruction and/or by the routing of storm flaws over hilislopes_ For erample, a largc landslide has already occ:urred in the front yarci of a resi- dence on the Cedar River at river mile 7.80. b. Sedimentation (from landslides). Sedimentation and channel and bank ero- sion are damaaing private property along the valley floor (`f'rih. 0399 and 0310). c. Ilooding during storn�s. Ftooding has been brouaht on by the effects of development and assoriated chanres to the natural drainage systems in the blsin. (See "B" above.} 3. Dcstructioa of habitat is being quscd by four mnditions: a. Sedimentation o! poots and riffles and eementing of gravcl� These problems, the resul� of severe erosion and the transport of hedload material, have been caused bv upland developments in the basin and the presenre o[ associated impen+ious surfaces, which increase the rate and � yuantity of surface runoff. Sedimentation and cementin� of bravels in s�reambeds dcstmy natural spaw-ning and rearinb habitat. On Tributary U307 a� ri��er mile .-00 and Tributary Q305 at river miles .95, 1.20, and 1.70, recent high flow-s have eroded the streambed at least one foot, contriburinb to a serious siitation probtem downstream. Heaw bedload transport is evi- dent in all systems of thc basin except 7�ributarv 03?3. In "Tributarv 0�03 at ri�er mile .25, fine sediments are accumutating in gravels that may be used by resident fisli. [n Tributary 0304 betw�en river mites .95 and 1.2Q, poots are being filled by sands and gravels and rearing habitat is beino rapidly lost. , b_ C6anneli7ation o[ stream bed.s. Loss of habitat tl�rou�li channelization haS ocrurred in a(I the major streams of the basin, but most noticeably in tlio.se reaches tltiat cross the vailey floor. These reaches lark habitat diversity, redu�ing fish use for spawning and rearing. Channelization lias damagc;d or destroved habitat in several reaches that were once heavitv used bv fish: the.se include Tributary 0302 betw�een river mile 30 and �30, Tributary 030�3 between river miles .OS and .1�4. Tributarv 0305 hecw�een river miie .20 and ,75, and Tributarv 032�4 from river mile 1.10 to I.�iO. These svstems cannot afford a further reduction of habitat and still remain vi<ible fisherv resour- ees. c. Tbc aocumulatioo of trash in stmam bed.s This probtem occurs in clo.se proximit_y to residential areas. Trash degrades water yu�lity and is vis��aflv unpleasant. Tires, appliances, furniture, and other trash have t►een throw�n in�o Tribu�arv 030? at river miles 1.00 and I.10 and in Trihutarv 0_�; at river mile .35. P:LC 6 Lower Cedar Rivcr Basin (continued) d. Wetland encrnachmcot_ Encroachment destrovs habitat and eliminates naturai water filtration and storabe [or surface runoff. Eaamples of this problem were observed on Tributary 0304 at river mile ?.30, Tributary 0303 at .30, a�d Tril�utary 030•IA at river mile 1.30. Many wettands have atreadY been completely lost through filling, for example on Trihutary Q306A at river mife _55. Suspected violations were foiwarded to Buildin� and Land Development for en[orcement. IV. RECOI�I�NUA'I'fONS FOR ACTION The priman� recommendations for action in the Lower Cedar River I3asin addresses current severe problems related to erosion, habitat destruction, and floociin�. Prevention of these proUfems will be ace.�omplished by controllinb locations and densities of new development and providing adequate R/D facitilies for stormwater. A_ Reduce landslide 6azaids by: 1. Including scnsitive areas not p�+eviously mapped oa the Sc;nsitivc Areas Map I'•olio (SAM1�. See Appendix C for a full tisting oE sensitive areas. 2. Estabtishing buiWing setbacks along cliffs and native grow�th protection easemen�s along steep ravines. 3. Diseouraging or ctiminating thc routing of stormwatcr over cliffs, unless adequate tightGne systems c�n be constructed to convev flow�s in a safe, nonei•osive n�anncr to the bottom of cliffs. 4. DecTeasing pcak flvws by constn�ctinb larber R/D facilities co lessen the landslide and erosion occurrence alono tributary slopes. I3. Reduce erosion and [Ioociing in the basin by impmving surfaoe watet manag+emeot: 1. Direct lhe racilities Manag�ement Sectioa of the Surface Water Managcmeat Divisioa to evatuate existing storm-delention and mmeyance tacilities to deter- mine whether they are properly sized to meet cunent standards. Evaluation sl�o��ld hebin with atl single-orifice R/D farilities. 2. Coasidcr areas other than wetlaods as regioaal storm-0etention [acilities. 'I�rihutary 0300 at river mife .�3? is the site for a proposed dam, for example. 3_ Utiliu e�asting low+er quaGty wetlands (thosc rated �6er t6an #1) az n�gional siocm�ctentioo facilities. Wetlands 3102 and 31�12 could provide more live stoiage, for example. 4. Review channel and culvert capacity for conveyiog eAsting and future nenoff, and establish floociplain areas in rerions of sli�ht gradient for existino and future n�noff conditions. 5. Promote the infiltration of surfacc water thr�gb lhe use o! �+eteotiou facilitics aod opcn chanceLs instcad o[ pipes where the soil and slope conditions permit. Collection points S, 6, and I? on plateaus have such soil conditions. � P:LC 7 l.ower Ccdac River Basin (continued) C. Prevent future peoblems o[ erosiou and tlooding with appropriate analys�t, ptannin& and poliry dev�elopment related to surface water maoagcment: 1. Cooduct a detaited, eomprc6en.Sive hydraulic/hydrologe aoatysis oi anY ProP°�'d devebpments to determine impacts on the drainage courses downstreani. This is especially critical for areas on ihe upper bluffs and plateau, which drain over steep, sensiiive banks above the Cedar River. 2 Conduct a study oC t6e impart o[ locating infiltration ponds utilized near the edge of the bluffs to determine their effect on seepab faces on Ihe lower face of the bluffs. This might be accomplished a�ith a computer-based numerical model of the oroundwater flow. 3. Require the tigfitlining of storm drainage doan steep or seasitive stopes when tliey cannot be directed away from the slopes. This is done by pipinc tlie flow down the slope and discharging it at the bottom with adeq��ate eoergy dissipation. Many of tl�e intermittent tributaries flowin� down tlze banks should be ti�htlined as urUan development increases flow to them. 4. ('.00.uruct new R/D poods with Gltcr berms to improve water quaGty anA recluee fine scdimeot loads. New R/D ponds should have two cells with gravel-berm filters and ve�e�ated swales at the inlet and outlet. •Consider Tributaries O.W, 0304A, 030?, and 0303 as sites for tliis type of (acility in order enhance w�ater quality. 5. Maintain natural vcgetation on strcambanks and itoodplains. This is esperiatly important for relatively flat channels flowin� on thc plateau before they reach the steep biuffs because these channels and their Cloodplains witl attenuate flows durin� tiroes of heavy runoff. 6. Maintain buffer are,as arouad wetlaad.s. Many of the tributaries on the south side of the Cedar River headwater at wetlands. 'rhese wetlands act as naturat storaoe areas durina storms. � 7. Reevaluate King Couoty policy regarding permitting for gravcl mining on steep, sensitive stopes. 8. Include the city of Rention in [uture intcrlocal agmements for planning and capi- tal improvement projects where city and county interests overlap. D. Eliminate p�+esent damage to 6abitat and prevent futu�e damage by addressing spociGc pr�oblcros in tbe ste+eam systems The fotlowing activities should he coordinated among Kin� County, the MUckleshoot indian Tribe, and State Departments of Fisherees and Game: l. Reduec damaging storm [lorvs with greater detention volume and lower release rates at upstream developmen�s. 2 Implement restoratioa pnojects on Tributaries 0304 (river mile .00-.?0), Tributary 0305 (river mile .20-.30). Tributatv 030� (river mile .25-.;5), and Tributary 03?3 (river mile ].10 -1.�0): P:LC 3 Lower Cedar River [3asin (continued) a. On Tributary 0304: Cfean streambed gravels, add habitat and bed-contro( weirs, and plant bank vegetation for shade. b. On Tributary 0305: Construct a new channe! and move stream from road- side channet to its new location on adjacent lands. Implement a [ull restoration project to provide channel meanders, habitat structures, pool/ritCle enhancemcnt, streambed gravel repiacement, and revegetation. c. On Tributary 00(13: Move stream from present channel to a location further north, away from the roadside. !f relocation is not possible, these minimum steps should be taken: Add habitat structure to existing channei with root masses, deflectors, boulder clusters, and other features; revegetate channcl banks with shrubs and smal! trees; enhance stream crossing,s with bottomless pipe arches. d Oo Tributary Q328 (Peterson ('.ieek): Add habitat structure by replacing the straight, shortencd channel with a more naturai, meandering one; place habitat structures (such as root masses, deflectors, cover logs, and boulder clusters} throughout the channel; and revegetate banks with shrubs common to adjacent riparian zones (salmonberry, ninebark, or dod ood, for exacnple). 3. Protect the Petcrsoa Creek system (Tn�b. 0328) m its present, near-pristine statc. This will include not only the restoration outlined in section A above, but also the adoption of land use management reoulations to prevent future habitat destruction: a_ Protect all e�dsting wetlands within t6e subcatchmeots af Petersoa Creetc. Employ wetland buffers at least 100 feet wide without ezception. b_ Restrict devebpment in the critical headwater uea (drainage, habitat, water quality) bouoded by Lake Desire, Otter [.ake, and Peterson [ake to curat deosities c. Designsate and protect streaonside maaagement zones of at least 100 feet from the ordinary high-water mark (OHWM) along the main stem of the creek. Use 25 feet from the OHWM on iributaries. d. Pt+esetve floodQlains and t6eir foresls for dynamic retention of sediments and w•ater. e. Restrict vegetation remwal in streamside/wetlaad management zooes. f. Size R/D facilities to store the 100-year storm at a two-to-five-year release rate. Use the two-cell type of pond with a forebay, a gravel filter, and a vegetated sw-ale outflow where feasible. g. Regulate more ciosely all septic taalc and drain-field installations, as wcll as maintenance schedules, particularly in the Lake Desire, Otter Lake, and Pe�erson Lake drainage areas. P:LC 9 Low•er Cedar River E3asin (continued) 6. Worfc with the Statc Department oE Eootosy to establish miairaum stneam- flaw nequiremcnts for Peterson Creek and Lake Desire t�ibutary. 4_ Devebp and prnn�ote public education and involvement programs (or basin aw�areness. Work with schools, environmental groups, and the civic and business communities to conduct educationat and restoration proprams. I , ' I � ' P:LC 10 � � \ LGvv�ri C�vM� k�vtR BASIN ... , ,. I . :X,..,�; \�-� ��- �: � � ; . . ,..,.. �� '; ,�, �x,.. 1:�:.,•�, � \ � +� Basin Boundary I \ Y!�M _i +`�-:i, ,�' x � ,��� •<�w��,•���\; -�—� Subcatchment Boundary A. ( 1 /J ,:r �.� �.,+ �S �.��. � . ��� � 'M� ;- �� � .. „ . �'ti:��_.. �2 CoUection Point J//���� � �y I 1; � _ ' �=� r���f..�•"�� -F' � , '� • j�� � � " /r � . �_ St eam < , '" - , � -,f; , u:�, - �u� .. , � 0299 Tributary Number � � P ��� i _ �l ... �� �S � �� ', •t ; �., + '� „�, i = �� �3115 Proposed Project t5 ii • .i �" .. r : : : �d � ,� i� k:S t. •t\;� f Fi • y� �, 1 �, f :..;., i �.T t I ' •/� �, t�� f � , x y.. 1V .� �. L 's , � .y� 0 �. �t0 � r ,i �-; I I . � 2 Mills � I �r�s ��� G: 4 '* � ' I _I '� .• ' r �� - '� �? . ' L � ' � � Julv� 1997 I . ' } i � �I� y+ y ... I W f�.a/ Il !.{ � .�:� �' � " Q�... � . .. �, �: �� �' �� ` ;� g� Y�r Gro.,. _4� � ^ p �� ��-i-r-. .. v; � A - ,�_. j •- _ 1 � /�A_!� .� ' I 1 �yw ' � � .� l. I f, ; ', �� . , _ � . � � 1 . �i � V ...... .. .. I ' �''� �'' Sr - �� f� � 3105 ' ..� , �: � � , ,� ` "'a� " �13� f �4� �a: \ ` y � �.� � �, z ; 3 . ,;'� � �, ` • .,, � , � . : —` * ,, : ; ;\;y . , � --- 9 .. , �, � , .� � ` � '' o" w j ,. . ...,y , 1 "�„� . � � , ��:n , , ]�'9 woo�. �w � w� �'� � 3117� ,;� p =. i� ` '�. . " ' : � 4 p �� � � �� .. ��,r �( -- 1- /��'��(��,�'�`'� r I .. �'t� 7 ''Y�..t ` - ,\ �' S. , 3121' . .L`-'. `s , — , ��,j� �f. ` ��� ' /�'%//�;a`i � I .�_��_ —- ��. `x� _. .."'�� `� _ ,, ~t'�, � `.� �i ' � �- � '�� , �•�T1,� .o = __ _ ,.;�„_ o � `C� , ti � . 1 ,- t ,w. ; '1' 31�6 p32��'-_ '* o ` r' � � ' ' e.,,,�,���� � , ,. a � ' "3�1�2 1 ,.' r � • C' u� �::.',.` 3 � . i� �-. ~ ^� :.�: c .- �� I � ` � ��� u _... .. i� ' �¢,\.\ t .' xl � ���1 y •;� _ . �� "l .y \ �a 4' -X .rs \\:. \ . + ' � � (�1 _ . .. ' 4 �� J �i � �A,�_Cl M �j 1 ' � � ��l . , , . �- p• � _ ' � �, o.. �.; � , .., � � �1 � � `9 \ `�. / '-� ' 1. . �� �.. ��� .: . . . �°3�� �,�, ��:� A,:;�. �� -�::.. ; �� • ��' ----- .i \�' � _ � ��, C�,��. � >,� .. _ a ''.�. �,���^ }" ., „ '� �_ _ \ — '1 '-+-- `�- .. ,� o' � � `<r,� _ ' . .� .,`,,: ` : '..,.,.. �ow `'�, � w � o �3115 ` `� ��.. �`f�.. '�I r<`�r .' I _ y' - .. ' � � y � �� 6 � � a I \ . , . , ��\\� �' -�\ . �..°' ; � '.� � , ,. !1� r� I ,( \ / � �r. p� � I .� I �, . . ... /% ��i C •�C.)fS�/ITiLE�.WAIERSM /Y�a y�'.�` !L � O �ry u� � T � � � � '�' r..». � �2 � E� -" . 311 • . . �11 �/�/ __ .�_ _� l .,_,i- _� s � .,,� �'` ua_,s . il � •S•�: � ' : � � I r . ,.. �' `� � h Vr ,- �� . I � .,. � • " s `+� a �.',i. M�OwV+M �. rI v`� ' ,� --•� , .� I .� ., .. .� ^' i � �. . � ' �t x....., w�'�7: n' � , \ \ I ,\�.• �._"% � 4 . . � M L.r Y .. ,� I � .�L i,. ., k,. .. . � � : • �:_� � �.,. ; `rl,. .,, �� � ` ;I. �• ... � . .f `� .,, ------ , ' =�� :` '�' �e:i ;/ �rr � ,.. �.. _.r?----...-•----- •- , '("� ;, r•(-r, � .I �..���^.� I �� .:~� I . + —�;.---.,,.-,, � � �� ,._.. � I - �I�„ , 11l t� l� . APPENDIX A . , EST[MATEU COSTS: PRUPnSEU CAPITAL IMI'ItOVEMENT PROJECTS LOWE,R CEDAR CR�EK BASIN " Indicates projeCt was identilied , by SuHace Water Management office pNor to reconnaissance. NOTE: All projeCis are located on map includetl in this report. Project Collect. Estimated Costs Numher Point Proiert Desc;rintion Problem /�ddressed and Commenrs 3105' 10 Cnh�ncc 2200' of Trih. 030$ from Mitigates flooding of Ki�b $115,000 Cedar River to Elliot Bridfie. County park land. (NOTE: This project was proposed hy Surf�ce Watcr Man�gement, is in tl�c desi;n phase, and will be construrted hy 1939.) 3109" 10 Sc�ure easements to wetland locatcd Better utilizcs wetland's stora�e $186,000 in Casctide Park and construct a berm cnpaciry to addre�.s peak flows from at the outlet. Repl�ce existing surrounding urh�n area. cateh h�isins with control stn�ctures. Project should he justified hy a . hasin studv. Wetlan�i rnted #2. (This wetland will reyuire [uriher biolo�i�al �vafuation bc[ore I2/D dcsign and c:onstn�c:tion.) P:LC.nPn �-1 -- — -- -- - --- _ _ _._ -___ , _ Pibject Collert. I:stimated Costs Number POit1t PCoject DeSc�ription Prohlem /1c1Jrc�.sed and Comments 3111 Secure easentents to outlet to Francis Wiil provid� �dditional storaoe $175,000 (Wetl�nd Lake and ]!00' of �hannel from lake to mitiga�c �nticip�ued future 313�i) to SE 1�4th St. Construct a weir to incrcased flows. r<�isc; I�ke level 1', 1nd enhance 11Q0' of Trih. 0:�17. Should he justified hy n basin pl�n. Wetland rated #1. ('T'his wetland will rcquire fucther biolo�ic�il evaluation hefore R/D ci�sign anJ const�vction.) 3112 19 Sccurc casc:ment for outict ro wetland Wil1 providc ad�iitional storage $117,000 (Wctland and replace existino wcir with a for ancicipated future peak Elows. 3142) concrete-slotted wc�ir. Shoutd be justified b,y n basin plan. Wetland rated #2. (This wetl�nd will require furcher biological evaluation before It/D desi�n .ind constivction. 3114` Scc:urc ct�semcnt to Wctltind 3150 an�i Ad�irc:sses �ntiript�ted increases in 5134,000 (Wetl�nd constnict � c;ontainment ber►n nnd flow c�iusc:d hy development. 3150) control structui� at the outict. I'roject should be justificd by � hasin p1an. Wetlanci rated #?. ('1'his wetland will require further hiolocic:al evaluation hcfore R/D design �nd constn�citon.) 3115 14 Install detention pond and 1,OOU' Mitigatcs sc:verc erosion and $3C,1,000 of ti�htlinc. Project is indcpen• floodinb during times of high dentfy justifiable. flows. I':I.C.AI'A A-2 _ _ __ — _ _ - _ , __ _., , , , � , , � Project Colle�t. Estimated Cocts Numbc;r Point Projcrt Dc.scription Prohlcm Addresscd �►nd Comments �ll� 31 Raise existin� ro�d emhlnkment Miti�ates seasonal floodinc of 1.�1ke $73,000 2-4'. Projcct shot►Id bc indepcn- Desire Ur. SL c��used by road bed dently justifiahle;. (Refer to settling in the pe�t bog. Itoads Uivision.) 3117 16 Inst<ill 1,400' of ti�htline, a Mitigates severe erosion, sediments $501,000 scdia�cnt trap, 1nd 700' of channc;l depositcd on County roads, �nd [rom Joncs Rd. to Cc�ar River. floociin� durin� times of hifih Projcrt is indepcndcntly justi- flows. fiahlc. 311g 10 Ins��ll :�(�' of 36" culvert, a new Wi{1 prevent blockare of culvert $87,000 inlet stn�cture, manhole, and catcl� and the accompanying flooding �nd ba5in. Yroject is in�ie�ndently erosion of Faitwood Golf Course and justifiable. mobi{e home p.�rk below, . 3119 4 Constnict a detention dam �nd Project loc�ation is ide�l because S1S9,000 controt structure in � deep it addres.�:s Clows from 1 I�rge cl�annelized section of 1'rib. residential are�i before they rearh Q3(xl. Project is indepc:ndently the steep, sc:nsitive area next to justifiahle. . the Cedar River. �120 15 Const�vct n s�:dimcntation pond and Miti�atcs Cloodin� of residcncc: �nd $1G3,000 1,000' of channel from Jones Rd. to sedime�t deposition on Jones Rd. Cudar Rivcr. I'rojc:ct is indep�n- Jcntly justifiablc. P:LC.APA A-3 i Pcoiert Collect. Estim�ted Costs Numher Point Proicct Dcsc:ription Prol�lcm Addre�.sed and Co�nmenis 3121 � Sccure easement to wetl��nd and �on• Addresses inrreased flows in Trib. $371,000 (Wetland struri a cont.iinm�nt hcrm and concrete 030-� an�i 0�0-1A from r�sidenti�l 3102) wc;ir at outlet. Projert should bz developments. justiCied by a Uasin plan. WetlanJ r:�tcd #?. 13iological ��.sessment is needed to assure that this project does not decrelse hzbit�►t values. :i123 ll Purchase e�isting ponds on Fairw•ood Mitigates floodino �nd erosion $342,000 Golf Course and exp�nd to provide downstream. grcater flow detention. Project is independen�ly justifiahle. P:LC.APA A-4 APPENDIX B CAPITAL [MPROVEMENT PROIECT RANKING LOWER CEDAR R[VER BAS[N Prior to the Lower Cedar River Basin field reconnaissance, 1? projects had been identi(ied and . rated usina the CIP setection criteria developed by the Surface Water Managemcnt {SWM) and I�tatural Resources and Parks Divisions_ Following the reconnaissance, 13 projects remain proposed for this area. They include eight new, previously unidentified and unrated projects_ These displace seven previousty selected projects, which were eliminated based on the consensus of the recon- naissance team. Projects were eliminated [or several reasons: two sites w�ere annexed by the city ot Renton, two projects were found to be unnecessary, two sites were categorized as #1 w•eclands (and are�ineligible), and one project was determined to be infeasible. The previous SWM capital improvement project list for the Lower Cedar Itiver Basin had an esti- mated c�ost of $2,710,000, while the revised list increases to an estimated cost of 82,73�,000. This 3 percent inerease in estimated capital costs is due to the addition of projects after the reconnais.s��nce. 'I'he follow�ing tabte summarizes the scores and costs [or the C[Ps proposed for the Lower Cedar River Basin. The.se projects were rated according to previously established SWM Probram Citizen Advisoi�v Committee criteria. The projects ranked below are those for w•hich the first ratinc question. ELEMENT 1: "GO/NO GO," cou{d be an.swered affirmativelv. Projects w-it1� kores of 100 or higher can he considered now for merpina into the "livc" C[P list. RANK PROJECT NO. SCORE COST 1 31?2 103 $;42.000 2 3113 90 37.000 3 31?0 75 163,000 4 3109` 67 136.000 5 3121 65 37 l.000 6 3117 60 501.000 7 3115 60 361.000 3 �116 55 73.000 9 311�{' 23 134,000 10 3111` 25 175,000 I1 3122$ l7 117,000 32 3119` 15 159.000 l3 3105 12 115.000 TOTAL $2.734.000 ' Projects proposed prior to the Reconnaissance Program P:LC.APL3 B-1 � APPENDIX C DETAILED FINDINGS AND RECOMMENDATIONS L�WER CEDAR RIVER T3ASIN ° All items listed here are located on tinal display maps in ihe offices of SuHaCe Water Management, Building and Land �evelopment, and 8asfn Planning. Trib. c�c Colle�t. Existing Anticipated Item' River Mile Point Cate�ory Prop. Proj. Conditions 1nd Prohlems Conditions 1nd Probiems Recommendations 1 -- S Geology Gullyine and landslides in Continued erosion. Recompact fill, revegetate, uncomp�►cted fill in new and drain adequately. development near edgc of steep hillslope. 2 -- 13 Geology Small landslide has formed None (natural failure), None. debris flow (11/36). Sedimentation in yard of residence. 3 0399 4 Geology Landslides in sedimentary Natural f�ilure. None. RM 2.6 cock i� cutbanks adjacent to railroad, 4 0299 16 Geolo;y Drainage from residential Increasin; erosion. Provide adequate R/D to RM 9.65 area is resulting in attenuate flows. e Ilying in swale. P: LC.APC G 1 Trib. 8 Collect. Existing Anticipated Item River Mile Point Cate�orv Prop. Prol• Conditions and Problems Conditions and Problems Recommendations 5 0299 13 Geology Horse farm in uplAnds I�as Continued high erosion and Develop R/D at horse farm RM 12.1 created extensive imper- sedimentation. to attenuate pcak flows. vious surfaees, resutting See Project 3115. in channel scour, bank erosion, landslides, and sedimentation at mouth of basin. Residence overcome with sediment. G -- 13 Geology Landslide terrain for sale Site of future mass erosion. Prohibit development here. by realtors. High risk for Notify Building and Land Iandslides, floociing (from Development. Add area to springs). SAMF. 7 -• 7 Geolopy Large-scale landsides Natural process. None. adjacent to Cedar River due to springs and cutting of tceslopes by streams. Appears to be natural. 4 .- 2 Geology Gullying in valley wall, Unknown. None. possibly from natuml sprin�s. 9 -- 14 Geology Landslide debris flow from Existing te�sion cracks Revegetate hiilslope with residence on SE 14�th Pl., indicate ft►ture instability, trees and shrubs. Renton. P: C.C.APC G2 � Trib. & Collect. Existing Anti�ipated � Item River Mile Point Cate�orv Prop. Proi. Conditions and Problems Conditions and Problems Recommendations 10 0299.1A 21 Hydrology 3116 Frequent flooding of Road.located on top of peat Elevate the road 3-4' by RM .08 county road caused by low bog and will continue to filling on top of the road embankment. settle, aggravating flooding present road embankment. problem. Also stabilize embankment. 11 0300 4 Geology Extensive channel and Problems will continue. Provide adequate R/D in RM .00-.40 bank erosion and numerous uplands. (See Project landstides due to 3119.) development-related . stormwater. 12 0300 � 4 Hydrology 3119 Development-related peak increased erosion on Construct detention dam in ftows have caused sig- hillslopes below. deep, channelized reach of nificant bank erosion. Trib. 0300. 13 0300 4 Hydrology 3109 Collection point 4 has Degradation of Trib. 0300 Construct berm and standard RM 1.40 been nearly completely from RM .42 downstream. This control structure at outlet urbanized. section is very�steep and to Wetlt�nd 3120 in Cascade susceptible to erosion. Park. 14 0302 6 Geology Channel downcutting and Will continue at same levet Contro! storm f7ows from RM .50 bank erosion. or increase, uplands. 15 0302 6 Geology Bank erosion (medium den- Increasing erosion with Provide adequate R/D in RM .30-1.00 sity) at� meanders and increasing flow from devel- uplands as area develops. - obstructions. opments. P: LC.APC C-3 Trib. 8c Collect, Existing Anticipated Item River Mile Point Cat_� Prop, Prol• Conditions and Problems Conditions and Problems Recommendations 16 Q�02 !, Geotogy Gully erosion from broken None. Culvert has been None. cuiverts. repaired. 17 0303 6 Geology Severe gully erosion Continued erosion. Tightline flows to RM .60-.4Q crentine smaii valteys main stem. from daylight cu[verts. 13 0�02 6 Habit�t Stream channeled along While fish now use this Add habitat diversity RM.3S golE course road. No reach, lack of habitat will • (e.�., structures, overhead overhead cover. No habi- eventually reduce popula- vegetation). Gain t�t diversity. tions. easement to restore mean- ders, if possible. 19 0302 6 �iydrology Tributary drains down Problem will worsen as Construct detention dam RM .a.5 sceep bluffs on north development upstream upstream of golf course. I side of Cednr River, continues. I carrying debris and floociing Maplewood Golf Course, 20 0302 6 HaUitat Water supply dam. Full As impoundment fills, storm- Dredge pond and maintain RM .50 barier to upstrelm water will flood over bank. it as sediment catch. mi�ration. Impoundmc�t Structure may fail. is filling with sc:diment. 21 Q302 6 HaUitat Severe gullying from rieht Will continue to erode until - Tightline downslope. RM .90 bank corregated metal reaches till layer. - Add velocity attenuator at pipe. Heavy sediment stream. delivery to stream. P: LC.�1PC C-4 � Trib. c�c Collect. Existing Anticipated Item River Mile Point Cate^ory Prop. Proi. Conditions and Problems Conditions and Problems Recommend�tions ?2 030? 6 H�bitat Trash in stream (auto, Area adjacent to corridor, - Remove trash. � RM 1.00 tires, appliances}. will continue to collect - Distribute educational trash and debris. Further materials to streamside worsening of water quality, residents. sedimentltion, erosio�. - Cite violators, if pmblem persists. 2:� 030� 6 Habitat Trash in stre�m. Water Area adjacent to corridor, - Remove trash. � RM 1.10 qu�iity problem, will continue to collect - Distribute educational unsightly. trash and debris. Further materials to strcamside worseninc of water quality. residents. - Cite violatots, if problem persists. 24 0303 G Geology Extensive bank erosion in Nonc. Increase R/D volumes, slow relcase upper portions of tribu- rate to nonerosive levels. tary. ?S 0303 6 Hubit�t Habitat suitable for resi- Sediments wil! eventua(ly - Control stormwater volumes RM .2.5 dent fish. Sediment �ccu- cover grayets. Habitat and discharge rates from mulating. wiQ become unsuitable for developments. fish use, - Manually clean grf►vels when necessary. 26 0303 6 Habitat Trash and litter in Further decreases in water - Remove trash and litter. RM .35 channel affecting water quality. - Distribute educational materials quality, causing erosion. to streamside residents. - Cite violators, if problem persists. P: LC.APC GS Trib. R Collect. Existing Anticipated Item River Mile Point C�te�ocv Prop. Proi. Conditions �nd Problems Conditions and Problems Recommendations 27 0304 7 Habi�ac L,andslides contributing Sediment will continue to Maintain riparian corridor RM .40 sediment to channel. Heavy enter system until landslide with setbacks at least 50' deposition in pools, at stabilizes. from tops of banks. obstructions, even in rifCles. ?3 0304 3 Habitat Horses have access to Further decreases in water - Encourage residents to fence RM 2.10 stream, causing some b�nk quality, hank erosion likely, channel back 15' from ordinary II deteriort�tion and possibly high-water mark. affecting water quality. - Limit access to livestock to one or two points along stream. 29 0304 3 ��ydrolopy Flooding caused by failing Problem will continue until - Problem referred to Main- RM 2.30 R/D at 17Gth St. �C 146th outlec structure is tenance section of Surface Ave SE. modified. Water Management Division. 30 0304 8 Habitat Eneroachment occurrinp Wetland likely to be - Require encroaching fills RM 2.40 along all boundaries of reduced slowly until it is to be removed. this headwater wetland. completely destroyed. Loss - Fstablish specific buffer of storage, filtration, around this wetland. organic production, and - Enforce sensitive areas wildlife habitat. ordin�nces and regula- tions. :�1 0304 7 C'reology Several gullies due to Problem will continue. - Tightline drainage. RM .30 daylight culvens; a few have recent landslides. P: LC.APC C-6 Trib. & Coilect. Existing � Anticip�ted Item River Milc Point C��te�orv Prop. Proi. Conditions and P�bl�lems Conditions and Problems Recommendations :�2 0304 7 Habitat Extensive riffle (to RM Gnvels risk becoming - Enhance habitat by addi- ItM .00 .15. Creek channeled. No cemented. Few resting areas tion of woody debris in woody debris, little bank for �pstream migrating fish. stream. vegetation. Steelhead, - Revegetate bank. coito spawners here. - Gnhance pool/riffle ratio. 33 0304 7 H�ritat Debris jam may be a Debris will continue to - Selectively remove debris RM .20 partial migration barrier. accumtillte. Channel will to allow fish pass��ge. ' likely divert or jam will - Stabitize large woody fait, releasinb accumulated debris. sediment. 34 0304 ? Habitat Debris jam. Bed drops 3' Debris will continue to • Selectively remove debris RM .h? over jam and sediment, accumul�to. Channel will to allow fish passage. torming anadromous likely divert or jam will - Stabilize large woociy b�rrier. fail, releasin� accumulated debris. sediment. 3G 0304 7 Fiabitat W�ter tufiid; oily sheen Water quality will continue - Educate residents About RM .80 and odor present. Storm to decline 1s runoff and how to maintain water quality. drains empty directly into waste enter stream. - Mark storm drains with stream. "Dump no oil" signs. - Emphasize recycling of oil. 37 0304A 7 Iiydro(o�y 310? Existine Forested wetland Addition�l storage could be Construct a proportional weir RM 1.30 provides detention for utilized by constructing and berm at wetland outlet, Trib. 0304A and 0304 in berm and weir at outlet. Project could be used instead heavily developed area. This could be done to atten- oE Project 3107 to rpeserve the uate increlsed peak flows #1 rated wetland (where project as upstream area develops. would be built). P: LC.APC G7 Tr�r. �c Collect. Existing Anticipated I [tem River Mile Point Cate"orv Prop. Proi• Conditions and Prohlems Conditions and Problems Recommendations 33 0304A 13 E-lydrolog}+ 3115 Runoff �enerated on top of Flooding will �ontinue as - Construct detention pond RM .40 bluffs on soutl�west sidc long �s land use remains the at top of biuffs. of Cedar River is causing same on top of bluffs or - Tightline drainage down severe bank erosion, until mitigating measures bluffs, then channelize it floociing and debris flows are t�ken, Runoff origin- to an existing ditch onto several residences ates from highly compacted alongside SR 169. of valley floor. p�stureland on uplands. - Prevent similar problems elsewhere with land use regulations, including provisions for presecvation of vegetation buffers near tops of cliffs. 39 0305 10 Geolopy Extensive bank erosion, Susceptible to increases Attenuate high flows. partly due to subsurface with increasing storm flow. clay layer and landslide topography. 40 0305 10 Geology Locat severe bank Problem will continue. Existing rock-filled RM 1.10 erosion. gabions are deflecting f tow. 41 0305 10 Geology Extensive channel down- Continucd erosion. Attenuate high flows with RM 2.10- cutting and bpnk erosion. aCequate R/D. (R/D 1.75 • currentty exists.} 4? 0305 10 Geolo�y Several gullies and �sso- Erosion will continue. Tightline cutvens. RM 2.15- ciated landslides due to 1.75 daylight culverts on steep slopes adjacent to chan- nels. P: LC.APC c-s � Trih. R Collcct. Existing Anticipated Itcm River Milc Point Cate�orv Prop. Proi. Conditions and Problems Conditions and Problcros Recommendations 43 0305 10 F-i�bitat Madsen Creck in ditch along Potenti�l for fuel entry in- Acquire 30' easemenc away RM .20 SE Jones Rd. Heavy silt; to creek. Furtl�er decreases from roadside. Construct road runoff; water quality in water quality cAn be ex- new stream channel. adversely affected. pected. 44 0305 10 I-Iabitat Creek in ditch along south Further decreases in water Acquire 30' easement away RM .35 side of SR 1G9, Heavy quality can be expected. from roadside. Construct inputs of oils, nnti- Potential for autos to enter new stream channel. freezes, heavy metals, channel. L.ack of habitat. organic pollutants likely. Sanci, silt from roadside (of SR 169) enters aiso. 45 0305 1tM .QO- 10 F�ydrology 3105 Section of Trib. 0305, Ploodin� will continue. Construct and enhance 2200' of .40 RM .00-.40 is expericncing (See Appc:ndia A, Project channel through undevetoped extensive ftoociin;. 3105.) King County Park LAnd. 46 0305 10 Habit�t Channelized along dri- T'urther siltation, water Acquire easement; move 1ZM .50 veway; lacks habitat qunlity degradation can be ereek from drivewAy diversity. Driveway scdi- anticipated. Lack of habitat 10-15'. Add meanders and ments enter channei, and precludes optimum salmonid habitat structures to oil placed on drivew�y use. increa.se diversity. enters stream. 47 030$ 10 Habitat Channelized triUut�ry Little s��lmonid use Add structures to incre�se RM .65 lacks hahitat diversity, anticipated. Spawning �nd diversity in stream. cover for s��lmonids. rearing success limited Manually clean gravels by Gravels compacted. (unless reach is restored). churning them, P: LC.APC C-9 � TriU. Rc Collect. Existing Anticipated � Item River Mile Point Cate�orv Prop. Proj. Conditions and Problems Conditions 1nd Problems Recommendations 44 0305 10 Habitflt Good spawning riffles occur Increased ffows may cause Control flows into system RM .90 here. 1/.-3" gravels, few eravel bar movement. from devcloped areas fines, not comp�ct. Hi�h Suitable gravels m�y be upstream. [f necessary, flows are moving m�terial, transported downstream to add bed controls to hold however. tinus��hle areas [or spawning gravels or "vee" struc- salmonids. tures to recruit them. 49 0305 10 Habitat Severe b�nk cutting �nd Further erosion/scouring can Control high flows by RM .95 erosion occurs hcre. Bed be expected. Chlnnel increasing upper basin R/D scouring evident. Reach deterioration will continue. facilities, lowering subject to high, r�pid Flows appear to be generated dischflrge rates to stream. ' flows. at developments. 50 0305 10 tiabitat Much woody debris Debris jams will occur with Controt upstream flows RM 1.20 movement and numerous greater trequency as flows with greatcr R/D volume, dcbris jflms. Reach is incre�se. Sediments will lower discharge rntes. subject to high, rapid build up �nd channel will Selectively remove debris. flows. divert. 51 0305 10 Hahitat Channel erosion, hank Further channel deteriora- - Increase R/D capacity. RM 1.70 failures, downcutting oc- tion may Ue expected. Silt, - Decrease discharge rates. ci►rring. Rench subject to sand transport to m�instem high, rapid flows, will inerease. S3 0:�06 10 Geolo�y F�ilure of manhole during Not �pplicahle. Repair manhole. RM .40 11/86 storm h�s resulted in gully crosion. P: LC.APC C-10 � • Trih. R Collect. Existing Anticipated item River Mile Point Cate o Prop. Proi. Condicions and Problems Conditions 1nd Problems Recommendations j ,53 0306 10 Geology Channe! downcutting, b�nk Erosion will increase. Clay Further increase in runoff RM .20 erosion and several layer in v�fley makes area should be attenuated; this landslides, due both from sensitive to landslides. is a sensitive channel. increased storm flows and development along edce. .54 0306 10 Geology Undersized culvert in arti- Possible fill failure: Lake Enlarge the corregated RM .30 ficill fili in gol( course ponded behind culvert in metal pipe and/or threatens to build lake and in 1981 and threatened construct adequate trash possibly overtop bank. tl�e fill. rack. Bre�ch flood possibl�. 55 0306 11 IIabitat Cl�annel subject to high, Further channe! damage can Inerease R/D capacity, RM ,25 damaging flows. Erosion be expected. Sediment decrease discharge rate. evident. transport downstream will continue. SG 0306 10 Geolocy Downcuttinb, b�nk erosion Will continue or increase in Artenuate storm flows. RM .30-.45 and landslides. future. 57 030f Hydrology 3113 Trib. 030h connccts witll Problem will worsen as - Replace existing pipes RM .30 large tributary at manhole developmc:nt upstream with l�rger diameter pipes here. Dcbris from 0306 continucs. (if downstream analysis clo�s this manliole, causinp allows for inereased flows). severe erosion of Fairwood - Install new in�et struc- Golf Course. tures with trash racks. 58 030GA 11 I-iydrotvay 31?3 Existing small ponds on Area upstream is developing - Acquire easements for ponds RM 1.30 0306A are overtopped and quickly, thus worsening the and additional area around ponds receive considerable silt problem. and construct detention pond. during high flows. The - Location is ideat for addressomg ponds are located on peak flows before they reach 1'�irwood Golf Co��rse. the sensitive Cedar Reiver bluffs. P: LC.APC C-11 � ' Trib. �C Coltect. Existin; Anticipated Item River Mile Poinc Cate�oYv Pron. Proi. Conditions and Problems Conditions and Probiems Recommendations � 59 0:�06A 11 H<�bitat Some usable habitat exists Further habitat deterioration - Increase R/D capacities. RM .?5 for resident salmonids. likely. Channel erosion will - Decrease discharge rates. Water quality is poor. increase. • Encourage use of 2-celt Channel subject to high detention ponds, swales. flows. - Prohibit filling of existing wetlands, ponds in upper basin. 60 0307 12 Geology Extensive bank erosion at Increased erosion will - Mitigate development- RM .10-.40 all meanders and obstruc- result with increased flows, related high flows. tions (trees, cars) due - Providc ndequate R/D. to inereased flows from development. 61 0307 12 Geology Stream eroding toes of Increasing erosion with • Mitigate development RM .10-.60 slopes resulting in increasing flows. related high flows. landslide failures. - Provide adequate R/D. 62 0 i07 12 I Iabitat 5tream channel pushed to Erosion witl worsen as - Incrcase R/D capacity ac RM .30 one side of rAvine for stream flows increase. �II delivery points. roadway. High encrgy M1y threaten road baak at • Reduce release rate below system. Much bank cutting, toe of slope. channcl scour level. scdiment transport, dcbris movement. 6:� 0307 13 Hydrology Area on top of bluffs near Infiltr�tion sites should Construct retention faci- RM .C,O Trib. 0307 has excellent be used whenever possible. lities for new develop- infiltrative capacity. These would provide ground• ments in area at these sites. water rech�rge. P: LC.APC G12 � II Trib. fi Collect. Existing Anticipatcd Item River Mile Point C1teQorv Prop. Proj. Conditions and Prohlems Conditions �nd Problems Recommendations 64 0:�09 15 Nabitat Subject to heavy, rnpid Erosion, deposition will - Control storm flows RM .10 flows. Channet erosion, incre�se. Sediments will upstream. deposition bars migration. migrate downstream, creating - Control volume and dischar;e a water qi�atity problem. rates. 6S 0310 15 Geology Sedimentation upstream from Continued sedimentation. • See "Hydrologic and hydraulic RM .60 culvert due to debris and characteristics" section in undersized culvert. New this report. corregated metal pipe con- tinues to pass water throuoh. 6G �310 15 Geology Severe erosion below Continued erosion and • Install energy dissipator j RM .OS culvert, severe sedimcn• scdimcntation. below corregated metnl pipe. I tation in residence yard. - Excavate chpnnel through yard where originnl channel was located. G7 0310 15 Geolo� Ro�d drainage formin; gully Continued erosion. Reroute drainage. Refer problem RM 1.50 adjacent to road; ro�d becl to Roads Maintenance. in danger. G4 0310 1S Ilabitnt 3120 Correg�ted meta! pipe is Problem will continue. Reinstatl corregated metal RM .?S an�dromous hlrricr. pipe at or below bed levef. P: LC.APC G13 Trib. & Collect. Cxisting Anticipated Item River Mile Point C�terorv Prop. Proi• Conditions and Prohlems Conditions 1nd Problems Recommendations 69 0310 15 Hydroloay 31?0 Existing ch�nnel dr�inino Freyuency and severity oE Construct detention pond RM .40 off bluffs on nortli side problem will worsen as on upstream side of Jones of Cednr River, causin; development on bluffs Rd. to trap sediments, and flooding of residences and inereases, enhance 1,000' of creek dehris flows onto Jones Rd. from Jones Rd. to Cedar during peak flows. River. 70 0310 15 Habitac Corregated mecal pipe Problems will continue and Remove new and old pipes; RM .60 outlet approximately worsen as outfail velocities replace at lower level 9' above bed levcl. will scour bed and banks. with oversized pipe with Complete barrier to fish. Upstream h�s recent (11/86) trash rack. Old culverts at l�ed level deposition up to 4' deep. are plu�ed. 71 0311 13 Geolo�y Gully erosion in drainage Continued ac�elerated ero- If possible, enlarge R/D RM 1.70 sw�il� due to outflow of sion. prior to its outlet in the wetland that partly seems wetland. to act ns an R/D Facility. 72 0314A 16 1��ydrolo�y 3117 Severc erosion, ffooding, Problem will be aggravated - Tightline draina�e between RM .20 damage to County and as �rea abovc devetops. detention ponds in gravel pit. private roads from - Construct detention pond inrrea.sed runoff from next to Jones Rd. to trlp gravel pit operations on sediments. hillside. - Constnict channel from Jones Rd. to Cedar River. 73 0314A/ 16 Geology In�dequate R/D, pluaoed Not applical�le. See hydrology comment 0314B culvert caused by eaten- above. RM .10-.40 sive channel and bank erosion and landslides. W1ter has cut a new channel. P: LC.APC G14 � Trib. �C Collect. Existing Anticipat�d Iiem Rivcr Mile Point Caterory Prop. Proj. Conditions anci Prohlems Conditions and Problems Recommendations 74 0317 Hydrology 3111 Francis I..��ke is only Trib. 0317 flows through • Construct proportional RM 1.C,0 Ilydr�ulic con�rol for ste�p area downstream of weir at outlet. Trib. 0317. lake. If area around Francis - Enhance 1,100' from I,ake develops, increased firancis Lake to SE 134th St. peak flows cot�ld caux severe damaoc to Trib. 0317 in the steep region. 75 0320 Hydrolopy 3114 Existino forested wetland if surrounding area urb�n- Constn�ct containment berm I RM 2.40 witli laree amount of un- izes, this would be a goai and control structure at utilizea stora�e. Wctland site to �iteni�a�e peak ouclet of wetl�nd (if bio- currently detains [lows on flows. togicat analysis permits). Trib. 0320. 7C 0313 19 I�abit�it Salmonid parr in many Decrease in water quality F.stablish und maintain RM .10 pc>ols. I,,arge pools up to with increasing develop- adequate buffers, 100' 1.75' deep. Som� deposi- �ment. L.oss of habitat. from ordinary high-water tion in pools, behind Decrease in fish use. mArk or 25' from top fo obstructions. . slope break, whichever is greater. 77 0342 19 Habicat Salmonid use apparent from System is mostly in n�tural - Maintain adequate scream RM .35 carczsses. Sockeye, condition. As development eorridor buffers. Chinook spawners. Some incre�ses, Itieher flows and - Reduce discharge rates to sedimentation occurring. worse water quality can be pre-development levels. expected. Prevent clearing, grading within buffers. P: LC.APC C-15 i Trib. �C Collect. Existing Anticipated �� Item River Mile Point Cate o Pron. Proj: Conditions and Prohlems Conditions and Prob(ems Recommendations ' 74 0323 19 Geology Medium-density 1lndslides None. Limit development in the RM .50 and high-density bank bnsin. erosion occurrina due to natural causes. This indi- cates channel and valley sensitive to effects of development. (Sensitivity due to c�ay layer. Basin hosts some of best fish habitat in upper reaches.) 79 03?4 I9 El�bitlt Significant s��lmonid use Scdimentntion from upstream Maintain leave strips � RM .�0 througfiout. Sockeyt reach possiHle, Adjncent adjacent to stream at spawners, clrcasses present. developmcnt will likely least 100' from orc�inary Coho, steelhead parr in reduce diversity and quality high-water mark. Restrict pools. Excellent habitat of habitat. use/development within this for spawnino and rearing streamside management tone. (a redd site). Mucl� diversity -- most exemplary in basin. Channelized reach. Uniform May cause thermal problems Restore stream habitut g0 0;�2g 19 Hahitat channel, no h�bitat diver- as w�ter temperatures rise, throughout: add structure, RM 1.10, sity. Heavy s��nd deposition. No useful hahit�t. diversity, bank vegetation, 1.40 f�ittle overhead canopy or and canopy. Cost should be bank vegetation. borne by party(ies) who channelized this reach. 31 03?3 19 f-tydrolooy 3112 Lake Peterson is small, Lake provides good peak flow Replace weir at outlet RM 1.40 open-w�ter wetlana with a attenuation and will become with a higher weir in weir at outlet. morc important as upstream order to gain additional tribi�tary are� develops. storage. P: LC.nPC G16 , TASK 3 FIELD INSPECTION i I i I EXHIBIT J - , Off-Site Analysis Drainage System Table , _ . I � � OFF-SITE ANALYSIS DhY-�INAGE SYSTEM TABLE Surface Water Design Manual, Core Requirement #2 Basin: Cedar River Subbasin Name: Madsen Creek Subbasin Number: Distance Observatlons of Field Inspector, Drainage Component Drainage Component from Site Existing Potential Resource Reviewer,or Symbol Type,Name,and Size Descriptlon Slope Discharge Problems Problems Resldent Constrictions,under capacity,ponding, Type: sheet Flow,swale,stream, overtoQping,flooding,habitat or organism channel,pipe,pond;siu, Drainage basin,vegetation,cover, desvuction,scouring,bank sloughing, Tributary area,likelihood of problem, , See Map diameter,surface area depth,type of sensitive arca,volume 90 Ft. sedimentauon,incision,other erosion overtlow pathways,po[enaal impacts OO Madsen Creek Courses through the site and — 0 None Noted None Noted discharges from the site at the nor[hwest corner OO RCB culvert Located at the northwest 1 0 - 90 None Noted None Noted corner, flows west OO Thickly vegetated ditch Flows west 1 90- 260 None Noted None Noted along SR-169 right-of-way 40 6- by 4-foot RCB culvert Flows nonh under SR-169 0.5 260 -395 None Noted None Noced � Ditch flows west along the Thickly vegetated 1 395 -500 None Noted None Noted right-of-way OO RCB culveri Flows west under 149th 0.5 500 -560 None Noted None Noted Avenue S.E. OO Ditch through thick Flows westerly into Park, 1 560-960 Ivone Noted None Noted vegetation 6-foot-wide, 3 feet deep OO Ditch flows noRh Thickly vegetated with 0.5 960-2,260 None Noted None Noted blackbemes, 6-foot bottom, 3 feet deep, l:l side slopes 11 i06.002.doc TASK 3 FIELD INSP�CTION There were several problems observed during the resource review, including the review of the sensitive areas folios, which found several items of concern for this project site. Based on our review of the drainage complaints from the downstream drainage course, there is considered to be flooding. However, the downstream drainage course lies within FEMA 100-year floodplain and there is nothing that can be done. The Cedar River raises its banks during the 100-year storm event and it is natural that there woutd be flooding downstream. 3.1 Conveyance System Nuisance Problems(Type 1) Conveyance system nuisance problems, in general, are defined as any existing or predicted flooding or erosion that dces not consiitute a severe flooding or erosion problem. Conveyance ' system nuisance problems are defined as floociing or erosion that resuits in the overt7ow of the I constructed conveyance system for runoff events less than or equal to a 10-year event. Examples include inundation of a shoulder or lane of a roadway. Overflows collecting in yards or pastures, shallow flows across driveways, minor flooding in crawtspaces or unheated garages/outbuildings and minor erosion. The downstream drainage course from the this project site, which is the Madsen Creek low flow ' channel, does experience conveyance system nuisance problems as delineated by the drainage complaints. However, it is not known if the channel has been rechannelized to provide better conveyance, which was a project that was proposed in the basin reconnaissance summary report. If that is thc case, then there should be no conveyance system nuisance problems. Since this project is proposing Level 2 Flow Control, no other flow coatrol measures are required as delineated in Section 1.2.3.1 of the KCSWDM. 3.2 Severe Erosion Problems(Type 2) Severe erosion problems are defined as downstream channels, ravines, or stopes with evidence of or potential for erosion/incision, sufficient to pose a sedimentation hazard to downstream conveyance systems or propose a landslide hazard by undercutting adjacent stopes. Severe erosion problen�s do not include roadway or minor ditch erosion. The sensitive areas folios indicated there were some erosion sensitive areas ict the upstream basin; however, there were none in the downstream drainage course. Therefore, this is not deemed to be a problem at this time. 3.3 Severe Flooding Problems (Type 3) Severe flooding probtems can be caused by conveyance system overflows or the elevated water surfaces of ponds, lakes, wetlands, or closed depressions. Severe flooding problems warrant additional attention because they pose a significant threat either to health and safety or to public or private propetty. Based on our review of the drainage complaints, there was flooding in the downstream drainage course and adjacent to the downslream drainage course from this project site, which is very near the Cedar River. This floocling occurred during 10(}-year peak storm events, which occurred in I990 and 1996, and once again after that. The downstream drainage course lies in a floodplain of tfie Cedar River and it is typical of a floodplain to flood. No further flow contro! should be proposed for this upstream basin, olher than Level 2 Flow Control, since the downstream 11706.002.doc drainage course occurring imcnediately downstream of the site exhibited no probtems from the drainage complaints or from our site visit. The downstream drainage course investigated by the site visit and a review of the soits map indicates that the downstream drainage course occurs mostly through till type soils. The fieid reconnaissance for this off-site analysis drainage report was conducted on October 14, 2005. The skies were overcast and the high temperature on this day was approxima[ely 55 degrees. . i � I 1706.002.doc TASK 4 DRAINAGE SYSTEM DESCRIPTION AND PROBLEM DESCRIPTIONS � TASK 4 DRAINAGE SYSTEM DESCRIPTION A1�1D PRORLEM DESCItIPTIONS Runoff leaves the project site in two locations: one fi•om the eas�ern developed portion of the site that discharges into a detention pond and, ultimately, into the right-of-way of SR-169 where it courses westerly into the Madsen Creek low flow channel,and the second from the weste�� portion of the project site sheetfiows due north into Madsen Creek, which courses in a westerly direction, ultimately crossing underneath SR-169 in a northerly direction after coursing on- and off-site a few hundred feet. Runoff then courses in a well-defined channel through thick vegetation, crossing underneath 149th Avenue S.E. in a box culvert, ultimately discharging into the Cedar River after going through a thickly vegetated area for over 1,000 feet. The fotlowing is a review of the drainage complaints and how each one was addressed: Complaint No.93-0944: This complaint dealt with neighbors acljacent to SR-169 and 149th Avenue S.E. complaining that ihe � cutverts the contractor was installing undemeath the old railroad trail were too small and might cause flooding. This comment no longer applies, as the downstream drainage course does not course through that trail. Complaint No.93-0992: This co�nplaint dealt with the same thing as Complaint No. 93-0944 and was referred back to that complaint as to how it was addressed. Complainf No.96-1661: This complaint deatt with silt being deposited from the overflows of Madsen Creek in the downstream drainage course into a backyard. This property owner was referred to Sam Chastain who is the City of Renton Public Works superintenden[. Compiaint No.97-1282: This complaint did not deal with the downstream drainage course from this project site. Complaint No. 99-0797: The property owner lives adjacent to the downstream drainage course of Madsen Creek and she felt the creek was going to overtop its banks and flood their progerty. This was due to sediment deposits in the channel and it is not known if the sediment was ever removed. Complaint No. 20(12-0048: This complaint deatt with flooding in Madsen Creek and the County said that they could not remove the sediment because of fish and wildlife issues. The County no longer has access to the downstream drainage course. All of the drainage complaints for this project have been addressed ab�ve. The complaints that dealt with floocling all occurred in the floodplain of the Cedar River and there is not much there can be done about that. ' 1 17U6 002.Joc i � __ � , EXHIBIT K Drainage Complaints � �vUY. 3. LUU7 1 :7tSYM KlNli �U. WLHU NU. 5fj5/ N. 1 . . � I 1�t�=-�� Kin oun Wate�and Land Resources WLR Division F��� c o p y 201 S 7acksoA St,5uite�i00 5eattle,'Q'ftA 98104-3855 // � � Date: � Number of pages including cover sheeG �Y To: � - From; Candi McKa�. Sn�g Te�h T� Fax:. ,�c��a��-/_�`��� WI.R Stozmwater Services Secdton Phone:206-296-�900 � Phone: F�Number. 206-296-0�92 �ORTANT LEVI'.L 1�13�IALYSIS NOTL: 'D'Ve do not send copies of cextain compXaint types that are not relcvan�such as BCW, F�, FIIZ, �IH and WQA, and we do not settd GL and Y.S types. See key below. Type S1, S2 and S3 will not be faxed due to size consixaints. ' � � ����� . The followi�ag is a Iist of compla�t types received by th�e�V'ater and Land Resources Division Dr�waage • Se�rvic;�s Section. Co�mplaint numbers begintuag prior to 1990-XXXX have been arcl�ved aud are no Ionger in aur possession. They can still be retrieved,if necessary,but wi�t take additional�time aud may nat be ben�ficiai to�+our research due to tt�eir age,development which has occture�,etc. If you are interested�n reviewing the aeival complaints, they can be pulled (nme permitting)for your xeview: Copi.es can be obt�iued fot�.15 per page, aud$2.(?U p�r page far plans. Bevs: ' . 'rine of Inresti�atlon 'Y'vae or Problem .C Aetlun Reqaese . DGA Develapmam/Constnw�ou � . BC9V Hosiaest'fot Qeam Watcr DDM Drataage-M'itceltu000ue . CxF Besponre ro 1n4aic�' - . DHS Ihaioage—ErosloofScdi�cntuion • •t�. CLim DIB D�aimae—I.endstide/F.azth Mwcu�ene BH P�tomemeat on Hold DTA Dninase Teelm;cai Asaistaaco ' ER BafocaaiaitReHew . INQ $cainago—GweralTnqairy � POC,F(R,PCS p�ty Complaints � MMA lvtainteaaina-Aadwtica FI $WMPalaquiry M.MF MaLueamce-Floodiag F!R SWME�ocRcview MMG M�lateaance-Ganual F!H 5WM�on Hnid IvA�►t MaL►taaance-Mo�ing •LS Law�Qc MNM .Msiuteoanaa—Nooda Maintr�oe RR - Paaliq��osi�wia,�r ReTkw MNW Mafntena�o-Noxioaa Wccds NDA N'c�ghbafio0d DcII�na�eAsals�nc� S'VVP SWM Fee Quations . wQe wa�a QaaUcy Cvm�l�t wQs water Qusucy—Heu 14taaagemenc 1'[acuo�s WQS Water Qaa'fi��fi�ocmcnt VYQD Waeer Quatily—Dac�ptng WQR waur Qa�li4 F�rf�g Rc"la"' � WQI Wa�c Quality—IDic1t Conaecdoa WQA Water Qttelitr A�d'ct FtEM SWM Fa-RCmrasarea�tat wQo w.rerQu�cy-oma c�trr svvM�e 51.S2,.SN3 Bngtcea3a�Soudiea AI9vD S'GVM Foo-New D;�oo�mc aS�ject to Yabtic D�se�oawre s�eqolrementa 1.Raeipt o�wntiea roqaest for doewaats 2.Reviow and appivvsA by�viocating Attrane�s offioo � i . � _ . . nuY. j. LUU7 I :S�rM KtIVu GU. WLKU NU. 5�51 N. Z iny Gounty�Water and land Bes�mces Dnrisron-�raina�e Servlces Section , ����1 PrintRd: 1i1032005 t_te:54 PM Complalnt Type Type of Pro�lem A�dcess ut Pro�m I�neots T�1�ea Pa� �nmUer Code . 1974-0095 C RIPRAP 15225 JONES RD ROCKS/O1KE/15219 JONES R�lCEDAR RN 657A4 1974-0096 C RWRAP 'l5224 JONES RD ROCKIDIKE/JONES RDlCECtAR RNER 657A4 1s74-01v3 G 15631 JONES RD SE �W/O BACKFILUJOtVES RD 657A4 t974-0'!OB C DRNG 15005 JON�S RD DITCNlALONG CEDAR 851A4 1976-0084 C 156TH PL SEIJONES RD DAMAGE AIONG RO/CEDAR RNER AREA 657A4 1976-0091 C DEBR! 15463 SE JONES RD CEDAR RIVER 657A4 1980-0031 C DRNG eR1AR RIDGE RETENTIONI�ETENTtON PO�fD 656J4 1981-0318 C � 15035 SE JONES RD DIKE JETTY/CEDAR RNER 657A4 1982-0513 C 14243 SE 146TH ST IANDSLIDE 856J4 1983-0357 C DRNG 94827 SE JONES RD CHNL OVERFLOMIADSEN CRK 657A4 1983-0360 C EROSION 15064 MAPLE VLY FNN 657A5 "983-0375 C FLD6 16203 140TN PL SE 85fiJ5 +963-0390 G FLDG 14675 MAPLE VLY HW 140TH AVE SEIMAPLE VLYHW 656.14 1885-0710 E FILL 15035 SE JOIdES RD KG CTY NOT RESP-W1lLnotENF 657A4 1988-0372 C VtOLA7� 15817 SE JONES RD MOBILE HOME!N FI.O�D PlA1N 657A4 1886-0372 E ILL DVLT 95817 SE JONES RO TO BALd FOR CM(CHK STAT BY CMDT}. 857A4 1886-U651 C FILLING 15045 SE JONES RD SEE 86-0745,1158 657A4 '�0745 C FILL 15045 SE JON�S RD iLL�GAL FIU.-CEDAl2 RNER 657A4 l aat3-0812 G EROSION 15421 SE JONES RD CEDAR RNER • 657A4 �ses-1158 C FLDG 15059 SE JONES RD SEE:86-0745 BRAMBLETf P,6-0745 657A4 1988-0156 C bRNG 15900 SE 156TH ST CB-CLOGGED DRAINI 657A5 1988-0237 C DRNG 13967 SE 156TH ST WATER IN BACK YARD/DE1/ELOPER PROP 856J5 1988-0259 C DRNG 15857 140TH PL SE WATER UNDER HOUSE 856J5 1988-0379 C EROSION 13929 SE 155TH PL CL�ARINGMAPL.�R{DG�ESTATES 65615 '1989-D086 C DRNG i4820 154TH PL SE lNSTALLING DRAtNAGE BS7A4 •989-0357 C DRNG 'l3941 SE 168TH ST IYEW HOUSE CONST FILL SS6J5 989-0611 C DRNG 13967 SE 1567H ST MOUNDS OF DIRT ON LOT 656J5 1990-0318 C FLDG 15225 SE JONES RD DN�F2TED DITCH/STOF7M EVENT 657A4 990-0448 C DRNG 14943 S� JONES RD DEBES UJ CREEK/STORM EVENT 65TA4 990-0518 CL FLOG 15225 SE JONES RD Cl.#12839 657A4 1890-0588 CL MUDSLtDE 75854 SE 156TH ST CL#12853 SUMMERF(�LD 857A5 890-0590 C DRNG 14933 SE JONES RD BACKUP UVTO MADSEN CREEK/STORM 657A4 .990-0599 CL FLDG �5271 SIRCH DR CL#12873 WONDERLAND MOBILE PK DUE 657A5 �'1 7990-0638 CL EROSION 15273 eIRCH DR CL#12911 WONDERtAND N{OBILE PK DUE 65TA5 '�— 93Q-0702 CL FLDG 95059 SE JON�S RD CL�t12933 SEE TULLY DUE AUGUST 65TA4 i 990-0748 GL FLDG 15023 SE JONES RD C!.#12g89 SEE 7ULLY DU�AUGUS7 85TA4 '990-0769 C C7RNG 19932 SE 155TH Pl. 8F20K�N P�E/LEAK INTO TRFMR 90-1187 658.15 pagatd5 , �rvY. �, cuv� t :��rm ntnu t,U. riIKU NU. 7�h/ t'. j �t Tr� Tr�oi Pro6[em A6�ress af Probtem l�anmen� �i�s Aa�e Namber Ce� 3-0769 S12 pRNG 13932 SE 155TH PL BROKEN PIPE 658J5 1990-0T76 CL FLDG 15500 SE i56T!-!ST St1MMERFIElD1CL#73U11 657A5 'l990-0793 CL F�DG 15035 5E .fON�S RD WASHE DOUT oRIVEWAY/CL#13019 SEE 657A4 1990-0956 G!. FLflG 15726 SE JONES RD MUD FROM CLOGGEp CUL1/�RTJCL#1313 65TA4 1990-0994 Cl �LDG 'l�4645 SE MAPI.E VLYHW C�#13175 WONDERLAND MOBILE PK bUE 656J5 r�--- 1990-0995 CL FLQG 14937 SE MAPLE VLY MW CL#13176 WONDERLAND MOBI�E PK DUE 658J5 �_ i 990-1023 C DRNG 15408 SE ,tO1VES RD HOUSL�MOVED iN NEAR CEDAR RIVER 857AA 1990-i060 C� �LDG 15283 BIRCH DR CL#13225 WONDERLAIV�MOSILE PK DU 856J5 �— 1990-1081 CL FLDG 15250 PINE DR CL#'i3332 WONDERLAND MOBILE PARK 656J5 '�—' 199Q-1187 CL FLDG 13932 SE 155TH PL CL#13430 FLOOD�D HOUSE 656J5 1990-'I503 C DRNG 1b026 156TH PL SE PlP�WTFALLTO RIVER 657A4 1990-1609 C EROSION 54250 154TH PLACE S� CUI.VB�T bAMAGE ANO SLIDE iN RAVINE 657A4 1990-1571 C FLDG 14227 SE 482ND PL WATEf2 COMtNG UP IN YARD/SASEMENT B58,f5 1990-1602 C FLDG 15805 140TH CT SE MUD&WATER IN STRE�T FF�OM CONS7 65BJ5 1890-1625 C EROS{ON 15833 SE JONES RD OP RNERBANK/FAiLED l.EVEE 657Ah 1890-1646 C SILT 14937 S� MAPI.E VAILEYHW �VEAR WONDERLAND MOSIi.E HOME PAR 657A5 �--- 1990-1673 C EROSION 14908 SE JONES RD CEnAR RNER BAWK 657A4 1951-0005 C EROSIOt�t 15240 142ND PL SE EROSION FROM PIpE IN RAVINE 65BJ5 1991-QOQ5 E EROSlON 15240 i42ND Pl. SE EROSION FROM Plf'E/DRY WELL INSTALL 656d5 1991-0013 C EROStON 15839 SE JONES ROAD STORM EVEN7NYASH OUT OF BANKS 857A5 1°Q1-0023 C DRNG 15805 140Ttf CT . S[ /POW�LVCONSTRUCI'ION NO EROSiON C 658J5 . W080 C FLDG 14037 SE 159TH PL WATER AND ICE ON SfDEWAI.K 656J5 1991-0080 E FLOG 14037 S� 1b97H PL RETAINlNG WALL/PONDING WA7ER 656J5 9991-0165 C DRNG 14043 SE 159TM Pl ' F�CF'OSED DRAIN LINE/ROOF 656J5 199i-0155 PN DRNG 14043 5E 159TH P�. NOT tVDAP 656J5 9999-0213 C FLOG 95240 'f60THP� gE WATERFROMEVERWHERE 657A5 t999-02'I3 NOA FI.JG 15240 460TH PL SE SEE ENFOF2CEMENT 657AS I991-0213 SR FLDG 15240 160TH PL gE SE�ENFORCEMEPCT 657A5 1991-0223 C FLOG 14833 SE ,IONES RD WA7ER FROM ROAb/fCYRDORNG 656,14 1991-0239 �� GRADING 14833 SE JONES PtAC� DIRT WORK NEAR SRIDGE 65&J4 1991-0345 C DRNG 14031 SE 159TH PL DNERSlON OF WATER YO SIDEWALK 6SBJ5 1981-0655 NDA DRNG 13200 440TH AVE SE CCF#SW M 0502-2JNOT NDA PUGET GOLO $58J4 991-0655 X DRNG 13200 140YH AVE g� CCF#SWM 0502-2 B56J4 �991-0657 X DRNG 14306 144TH AVE $� CCF#SWM 0419/PARK DRAINAGE fi56J4 �99�-osse CL FLOG �4645 nnAPLE VAL�EYHY MEMO TOPA 11-30•90 s57a5 �-- 991-1013 LS FLDG/ERO 14937 MAP�E VALLEY HW DISMlSSAL�RDER DATED 10/619�i 657A5�—t i 992-0414 C DRAIAtAGE 14059 SE 159TH PL V�ATER OVER S!W 656J5 -992-04i4 E pRAWAGE 14058 SE i59TH pL g�JS 992-0414 ER ORAMVAGE 14058 sE 159TN P� WAT�R OVER SNV-NOV.MEETING s56J5 1993-0109 C FLOOD�NG 95533 1S6TH CT SE VAU_EY FA1RE CRAWL SPACE 657A5 Page 2 of 5 i � irvv. �. �uu� � :��rm R1 NU GU. WLKU NU. h85/ P. 4 �py�at TYIe �of ProbiQ� Address�i Pr� Ceo�aeats Tbres P�e I�er Ged� :-0210 C DRAINAGE 15813 156TH PLACE CRAW LSPACE/C�OSED TO CLAIM 93-030 657A5 1993-0302 CL DRNG 15613 156TH PLACE SE MAYBE CLAlM #96155 657A5 1893-0943 C DRNG 94900 SE MAPLE VLY HWY MAPLE VAIL�Y HIGHWAY CONSTRUCTIQ 656J4 �' 1993-0992 C DRNG 14900 SE MAPLE VALLEY HW SEE 83-0944 SWART�AU<ER 656Jy� 9 594-0332 W�C OISCHARG 14900 JONF-S PLACE SE VACTOR bISCHARG�tN STORM?? B58J4 1994-0392 C DRNGPIPE 140Z2 SE 158TH ST WqTER 01/�R SIDEWAl.K 858J5 199A-0392 E DRNQP�'� 14022 SE 159TH SY WATER OVER SIDEWALK 656J5 1994-0392 ER DRNGPIP� 14022 SE 158 fH ST WATER OVER 510EWALK 656J5 f994-0447 C FLOOOIIVG 15705 SE 157TN ST VALLEY FAIRE!!!SYSTEM NO7 WORIUNG 657A5 �994-04�17 NDA FLOODING 15705 SE 1577H ST VALLEY FAIRE 3 TIGHTLtNE 657A5 g84-0447 RN FLOODWG 157D5 SE 157TH ST VALLEY FAtRE ffl SYSTEM NOT WORKfNG 857A5 19940809 WQC DUMPWG SE 1591'H P!.&140T SE CONCRETE DISCHARCSFJBEAU7Y BARK D 656J5 1994-0813 C PONDlNG i4018 SE 158TFi ST WATER OVER SIDEWALK MAPLE RIDGE E 656J5 199.5-U328 C FILLI[VG 15009 SE JONES RO CHK ROAD DRNG&GRDG PERMIT INFO G 656J4 1995-0TS8 WQC DUMPNG SE 158TH 8�149TH CT NEW D!W CURB CUT&CONC CLEAN-UP 656J5 1985-1120 WQC DUMPtNG 14636 SE JONES PL EMERGENCYFLOOD REPAIR 656Ja 995-1162 C D{('CH�S Si2 169�146TH WSDOT HELPING R�SIDENT R�DUGE FLO 656J4 �" 1996-0384 FCS CRE�K 14937 SE RENYOIV-MAPLE VALLE MADSEN CREEK POND SEDfMENT LOAD 656J4 �-- 1998-0384 R CREEK 14937 SE REPITON-MAPLE VA HY MAOSEN CRE�K POND SEDIMEN7 LOAD. 656J4�- .998-0384 R� CREEK 14937 SE RENTON-MAPLE VaLLE MAOSEN CREF}C POND SEDiMFN7 L�AD 656J4�--- 7�6-0437 C SLtDE SE JONES RD&1�i9T SE 85s.14 y0492 C FLOd 15035 S� JONES RD 656�4 -i998-0869 C FLDG 15035 SE JONES RD HlGH FLOW PONDING PVf PROP NOOUT 657A4 ''996-0869 NDA FLDG 45035 SE JONES RD HIGH FLOW PONDING PVT PROP NO Ot1T 657A4 996-0869 R FLOG 15035 SE J�NES RD HIGH FLOW PONDINC3 PVT'Pf�OP NO OU7 6S7Aa 1996-0�88 �CS OEZ 15282 SE MAPLE DR OII.SEEPAGE INTO POND 656J5 996-0950 C CRE�K 1501fi SE JOI�tES PL LACK OF COM/EYANC�RD X-CUL PVT PR 656J4 996-1U50 GL FLDG 150'10 156TI-f PL S� REIMBURSMENT F�R CLEAN UP WORK IN 857A4 1986-1122 C BERM 14833 SE JONES PL BLOCKAGE OF ORAINAC3E PVT PROP 656J4 996-1881 C SILT 15097 149TH AVE SE Si'REAM BACKUP BECAUSE OF BEAVER 65fiJ4 �'— 896-'{762 C FLDG 15059 SE JONES �2D DAMAGE TO DRNO OUTFALL 70 CEQAR R 657A4 1997-0057 C PlPE 75649 SE 157TH ST SEDIMENT IN RAVINE 657A5 i97-t?524 C EROStON 14831 156TH AN� SE NATURAL SLIDE AREA ADJACENT TO PIP 657A4 ��97-10T2 C STUMPS '15405 SE J�1VES RD STUMPS STOCtCPiLED FOR CO PROJECT 65TA4 �997-1088 FCS RDDAMAG 1Q937 RENTON-MAPLE VALLE MAIN7�IdACE REQUESTMADSEN CREEK �56J4 -C--+' i97-1282 C FLOODING 15016 149TN AVE SE INFO REQUES7 REGARDING RD BRIDGE 656J4 -l-"i 1998-0540 FCS VANDALSM 14900 RENTON-MAPLE VL (NV DID NOT CONFIRM DAMAGE'f0 FAClU B56J4 �—` "198-0630 FCC DUMPING 15400 SE 155Tti PL DUMPIN'fRASH IN POND POND MAINT RE 857A5 ►88-0634 C SPRING 15698 SE 157TH GPR WVOLVED PREVIOUSLYTURNED TO 657A5 1998-4634 NDA SPRING t5619 SE 157TH GPR INVOLVED PREVIOUSLYTURNED'f0 657A5 Page 3 of 5 ' i i�vr. J. NVJ i :�prin n�iyu �V. �'�ttU NU. 5�`J/ t'. 5 , I Ca�taNt iy�e T�of 1'I�bte� Addross of Pro�ln f:o�e�t� T�ras P�aqe lli��r Cade )e-0634 R SPRI[�IG 15619 S� 157TH C3AR 1NVOLVED PREVIOUSLYTURNED TO 657A5 1999-0165 C EASEMEN7 i5619 SE 157TH ST ERROR(CMPf.N7 MEANT TO CAL�RDS) 657A5 1989-0297 FCR RO MAWT 15008 SE 145TH PL REQUEST TO REPLAC�BO11A42DS AND l 687A4 1989-0404 C DRAWAGE 15227 SE REM'-AAAPLE VLLY qPp,4FtENT BREAK tN 170MESTIC WATERL 857A5 �'' 1999-0445 FCC MAINT 154Q0 SE 155TH Pl. POOR OONbRlON OF MITIGATED WETLA 657A5 1999-0797 C FLOODMIG 15031 1497H AVE SE PROP FLOODiNO DUE TO STORM AND SE 856,t4 �-- 2000-0552 C DDM 650 OWALL AVE NE APT G7 REQUEST TO HAVE COUNTY INSTALL RO 6�56J4 2000-0700 C DCA 14645 SE R�NTON MAPLE VALLE PRNA'fE DRAWAGE PROJECT AT WONDE 65fiJ5�—' 2001-0092 FCC MMG f5400 SE 155TH PL CONSTRUC710N OF DITCN ON ADJACENi" 657A5 2001-0127 C ERQ 14636 SE JONES PL 656J4 2Q01-0927 R ERQ 14636 SE JONES PL SAN�6AG QUICK FIX RELATE�TO EAR7H 656J4 2001-0152 C bOM 15619 SE 157TH ST NO INVESTIGATtON REQUIREO. HISTORIC 657A5 2001-0152 R DOM 15819 SE 157Ti-1 ST NO INVESTIGA't'!ON REQUfRED. HISTORIC 657A� 2001-0961 FCC MMG 15400 SE 155TH PI. REQUEST FOR lNFORMATION TO COMPL 657A5 2001-0193 WQC WQB 15400 SE 155TW PL#60 ALLEGED DISGHARGE OF OIL POLLUTAN 657AS 2009-0220 E MNM � 15006 SE 145TH PL APPARENT ENCROACHMENT INTO R/D T 657A4 20Q1-0220 FGR MNM 75006 S� 145T1i PL APPARENT ENCf20ACFiMENT INTO R/D T 657AA 2001-0220 R MNM 95006 SE 145TN PL APPARENT ENCROACHMENT-INTO R/D T 657A4 2001-0305 RET BSR 1$108 SE 145fH PL 657q4 200'i-0378 FCS MNM 14845 RENTON MAPLE VA[1F CONC�RN REGARDtNG K(OS PLAYING IN 658J5-�--• 2001-0�25 FCS MNM 149TH A &SE JONES RD 656J4 -0778 C DDM 15809 SE 957TH ST APPEARS TO 8�SURFACING GRDUNDW 657A5 2002-0013 C DLE i4223 SE 946TH 5T STEEP gLUFF ABOVE CEDAR RNER. SLI 656J4 2002-0048 FCS MMG 14900 REMON NU�PL�VALLE Spoke to cor�lainant and s�lalrred we were 656JA��` Z002-0122 C pDM 1A833 SE ,fONES PL NEW SFR GONSTRUCTION. SHEET�LOW 6S6J4 2002-0122 NDA DDM 14633 S� .1�NES PL NEW S�R CONSTRUCTION. SHEET FLOW 656J4 2002-0122 R DDM �14833 SE JON�S PL NEW SFR CONSTRUCTION. SH�ET FLOW 656,fq ?002�0275 FCS MNM 14900 RENTON MAPLE VALLY No problem fourui 656J5 �' 2002-0421 FCS MMC3 15619 SE 157TH ST REQUEST TO REMOVE DANGEROUS TRE• 657A5 ?002-0602 C MNM 15006 S�445TH PL CONCERN REGAROING L�ANING TREE. I 6S7A4 !002-0631 C DOM 95827 SE 15BYH CT OPEN C�-;Af�NEL CONVEYANCE POSSISLE 857A5 2002-0631 R ODM 15827 SE 156TH CT OPEN CHA(dNEL CONVEYANCE POSSIBLE 657A5 003-0435 C MNM 156'1B S�157TH ST REQVESTTO REESTABLISH DRAINAGE C 657A5 _003-0435 N�A- MNM 15619 SE 1571-H ST FZEQ(J�$T TO REESTABLISH Df�AINAGE C 657A5 2003-0435 NDA• MNM 15619 SE 157TM ST REQUEST TO REESTABUSH DRAINAGE C 65TA5 003-0435 R MNM 15819 SE 151'iF-I ST REQUEST TO REESTABLtSH DRAINAGE C 657A5 �003-0573 FCS MNM 14900 MAPLE VALLEY HWY SE g5TA4 '�"- 'fl03-0804 WQA WQA! 15400 SE 155TH PL WQA P�R MCL 657A5 �03-0826 C pTA 15643 158TH PL S� WATER SATUF2AY�D YARD. APPF�RS LQ 657A5 Z003-0H76 F1 REM 15711 152ND AVE SE Total Lot Area=2,401,898 sq R(55.13 Actes)_ 657A5 �—_ Page 4 of S _ . ..— , - ,,, ,,, ,.���u ��. n�nu NU. 7257/ Y. b ��, t t� iype o�ProMem A�ess of Prodtem Comraenta TbnsPa�e �4-0022 FCR MNM 15006 SE 14STH PL Storm�damaged tt+ee bc�ches hanging over sl 657A4 �v04-0061 FCS MNM 149TH A & MAPL�VALLEY HWY REFFRREa 70 TOM EKSTEN PARKS TRAI 858J4 �-- 2004-D325 WQA WQAI 15Q31 MAPLEVALLEYFiWY 65BJ5 �— 2004-Q505 FCS MNM 152ND & SE RENTpN MAPLE VAL , g57q5 �-- 20Q�{-0841 C D7A 154Q8 SE JOt�1ES RD Sfrearn across prope�ty.plans for new E@ioU B 657A4 2005-0942 C NNAF t4845 REM"ON-MIAPLE VAI.L� �itch backing up onto Wonderiand Esbtes Mo 658J5 �— 2005-0142 R MMF 14645 RENTON-MAPLE VALLE Ditch bacicJng up onto WondeNand Estates AAo 8S6J5 �-- 2005-0522 F! REM 15300 SE 155TH S7 657A5 ; 1 I _ I Page 5 ct 5 � NOV. 1. 2005 1 1 : 04AM K(NG C0. WLRD N0. 5898 P. 1/30 � , ���� co�� T�in�County �Yater and Land Resources IWLR) Division 201 S Jacksot�St, Suite�600 Seattle,WA 98104-3855 �/ Aate: Number of pages inciuding cover sheet:� To: � Pm�oa: Candi McKay. Bng Tech YI � F�, • _ WZ.R Stormwater Services Sect�oz� Phone: � Phone: 206-296-1900 Fax Number: 206-296-0192 IM�'O1ZTA,NT LE�V'EL ��ANALXSIS NOTE: We do not send copies of certai.n complavat type� that are not relevant such as BCW, FI, F1R, FII-� and 'pYQA,, and we do�ot send CL and�S ty�es. See key belo�v. Type S 1, S2 and S3 wi11 not be faxed due to si.ze constraints, � . � /�/ �� . The fo�(owing is a list o�complaint types reeeived by che Water and Land Resources Di�vision D�ainage Services Section. Complaint numbers beginning prior to 1990-�XXX have been arehiv�ed and are no longer in our possession. 'They can still be retrieved,if necessary,bnt wiYl take addi�ional�time and may not be beneficiai to your research due to their age,development which has occurred, ete. Tf you are iuterosted in reviewing the actuai complaints, they can be pulled(time permiiting}for your re�view. Copies can be obtained for$.15 per page, and$2.00 per page for plans. Sevs: " . 'I�vue of�nv�ctieatfon �`ype of Probtcm -C Action Requeac . DGA DevatOpraentlConsudction BCW Basiaess'f�Clcap Wsoat DAM Dcainage-Nliscellaneoue . CCP Resp�mseboFaquiry _ AES Diainage—P.eu.don/Sedi�cniation � 'C1, (:luim DI.H Diainsge--I�ndsiidc-JBacth Movement � � Enfo�oca�cat on Hold- DZ!► Draenage Teehnic+!Assistanca ' BR P.r(v�enwat Review . INQ I?caivaSe—Gerccai Itiquiry' PCC PC�t.E'CS Paci�iq'Complamts � MMA Mtinte�mnee-Acsthotics PC SWM Pco YnqatY MMF Maiuteonaee-Plvaling !'!R SWM Pca kevkw MMo Maintenance-Gcrktai �I S WM Fa on$oid. NII�ZA4 Malntenance-Mowing �LS Lsws�c D�IIVM M�Iteaance—Nadt Maintenanc,� .... RR - FaCt7ity Bn�ea��g Review MNW Maiatermnce-Nw�ious Wceds NDA NcSghborhood Drainage Ataieames S9VF SWM Fee Qacations . WQC Vf/acer Quality COmplaim WQB Wa�er Qoxliq—Bett'Menagcmant PracUas WQE wacer Quakcy Er,�roomenc � wQD Waecc Qvality—Dumpin8 wQR watrr QuaGcy Bngiaeaing Rev;aw � � wQt wrta Qas{ny--m�eil oonneaio,► WQA Weoet Que6ty Avdit ItBM SWM Pee-Remea�uremeu[ wQo Warer Qnalety—Omer Gl2T SVYM pee-c3raue S1,S`�,SN3 &n�ing Studias NWD 5'WM FedNew Diecoant � •Subject tn Public Disclos�u�e reg�i�cnd 1.ReGeip�o�roY[itteA Ttqttest fOt doCum�.+nts 2.Review 8�1d appl�oval by PmsoCuliRg Attomty':off�ec • ' NOV. 7. 2005-11 :05AM----�-KiNG C0. WLRD N0. 5898 P. 2/30 I K�NG CoUNTY DEPARTM�NT O� PUBLtC WORKS � � SURFAC�WATER MANAGEMENT bIViSION � • Z � CdMPLA(NT INVESTlGA1'14N REPOf�X �2 ' _ ti Z O �EIB REC C: - PtATUFiE OF GOMALAIN7: ' �CfO I LOCATION: SEC c�TWP RGE II KROLL PG, ���_ COMPWfPWNT: COUNCIL DIST. (Q.� Addr6ss Staie Zip 8D� �� �yt O�/� DEJ'A1LS OF COMPtAlNT; I ,� C'..Gr f-- . ��� �"�t� . �'� a��0 � AMPL4INT RCCENED 8Y• DETA!(.S OF INV�ST(GATtflN: Sketch on reverse side:Yes❑ No❑ Photos:Ye3� No D � . ouanGty �� ' `�IfP1111NT INVESTIGA7ED 6Y: DA7E; I�ON tAKEN: " � �U�c rv. �cJ e..�..'�' � . ` //�/ � �cJ S'!.d/�l�i�j � �inant advised of actlon possibte or take y; Ph ne O tter O Personal Contact d , � . �. P,�ai�i Action Handled By Cfosed: r� ��. OK'd: �^• Wte inNiels i NUV. I. IUU� 11 :U5Ahh K1NG C0. WLRD . . � N0. 5898 P. 3/30 'a�-_�:. . . -- - ------ --. . . . _ . � • . . �omplaint No. King County Department of Public Works Surface Water Management Facilities Maintenance Section COMPLAIN7 INYESTIGATION FORM Nature of Complaint � 4' � !� � . Da�e Re�.`����" Lo�at i on�L��l 4'�- ��.���-�dQ-1'( � Comp 1 a i nant�_ -t�!/� Phone No. (home)����1�' (work) Address Oetails of Camplaint / � / �'� Rec'd by �# *** * ���*** �,�* * *� * ****�**# �* �**#� �* * Referred to: � 1} Date� Comments I 2) Date Crnnments Na F 't P t • L . I D me of aci 1 i y or l a ot No . . No. Type of Facility: Location of �acility: River Sec. Twn. Range Storm � Road Roads Div. � Off Road R/�f Private Kroll Page No. Res. R/D . � Comm. R/D � Thomas B�os. Page No. OL!?/O�F ' Other �" � Council District Oetails of Investigatlon: Investigated by: Date �r�1c �-k-r �t+4Yr �Ir * yr * �t * y� * t�t****i��1-,r�t*7r*�r**��k�t �k ,r�C �c****�Ir*�r,r �r*,t x Action T�ken: •'�:;, � .a� . � .�'•=�;;� �=���;��: Cqmpiainant Contacted D Phvne Letter Persvnal 0 � : �� �,.�p�� � ,�;. ,_�,... Y= ly ther . pp,�a2'���, `v. l�d,by; Date Date Lo ed . '�;:�' ;;��:;;. � 99 .:, tw , •, i N4V. 7, 2005 11 :05AM KING C0. WLRD N�. 5898 N 4/jU:; �- ---�—� �— � , .�; KtNG GUWNTY �URFACE WATER MAryAGEM,ENT DIVlStO�N • `":'�` D_R�,ZI�'AG� ]:NN'V�STIGA�'IQN R�P4RT ' . [:�,qNN� �APAcrry R�� Page 1: INV�STIGATIpN R�QUEST PROBL€M to s-�Kc�'ra�u -------- �YPF C ,���Z GE�� Date: l0 z0�9 3 ���d by: F�e No. /l'.3 O�. , Rec�%v"eh��= (P�sase print p�akdy tvr sca.+ninpl� (�Y� (Er•} .. .+�'�'i. NRML. •�l u.��-T � PHONE a3�'a967 �H�) :�\� Y>; , Apt�- ��1So2�7 .J�� ���v� ' .S v�- G�cy s-ate z�p �;,:-r � L id:'�i�'� R�obiem, !f dffterent �6 � � flc. ��CHARGE #� �7s o�`�'�ob/e�n: C'a�t11r261U'/cO2 A'LdY� �t��/�'�APLE !/�L1..,� ,Q1� ` y fl.�s � �Pt-Aco� A. �/Klf�-t- �1iFI�e�O QiC/Ae� �/r� �/h�L G� G u L N�j2.T�5) . N El GKBoRS �,Q,F ���v� �r�r ��vk�v ����,� r�i.�j G�usE �tvoo�.�- . . � � I', �ther �genGies irivo�,ved: (Cive deta�.ls) � • ;pparted lrnpacts: # Pro,�erties: Dates/frequency o� occuxre»ces_ Home Access xoad . � s�ptic systern � � _ Outbuild�.ngs, gazage , �ardJ�.andscapxng • � _ O'-�her proneYty _ Stream, lake, wetland .,mmeats: . . .. .---.___.-._..._... .......... •--•-�._.. ....... iid4t�wwi�i L7F��eir.. . t�f�4d4�r . . . . . . •......._ .... �_ . , . . � . . < '� 1-Np . • .wik..�.►riVG':s.:ri�wr�rG:i.'iiiii"'r�i�r�w;i7+4"�ii'r.lr:�:'•'�rr. ?L „��.�,+..,.,_ h ., - ,rac.w». .,3r��:,s�uutrs,�. �cationf)"�acking lnfo: :�1/4 S�T o�j'r� .S� F'arcet No. Type tsin �.C(�, Caunclt Dist 6 D1R Ref/Chg No: Ciry �ield investioaticr. neeoed? '��i '�m�� Block No: � Lot�No: _ - taken; Assigned to; Turneti to � on�f / InKials: KROIL ��r1RS BRbS y�W:(p��_.'�� �ATE CLOSED: �2-/� 23 OK�d, _� oLD: �� p� ; � �NOY. 7. 2Q05 11 : 05AM � KING C0. WLRD N0. 5898 . P. 5/30 KING COUNTY SURFACE WATER MAN,AGEMENT DIVISlON DRAII�AGE IN�ESTIGrATIQN R,�PC�RT Page z: �FIELD fNVESTIGA7fON 7YPE F�1e Nam�: File No. Oeta�7s of Invest"gatio�r: Date Of Field Irn+estlgatinn:(� /��3 Retated Investigations: The area of concern is in �he CPdar River Sasin aZong 'the Re�ton--Pi�plp Vailey Ftwy, seuth east of 149th Av SE. zhree 56"X38" CMP ��nder the Rent�n - Maple YallPy N��y drain to a � smal] area between the highway and trail {that had been •R/R fight of wayl where a a$" CM,p drains towar�s the C�dar River, under the trail , and thr�+ a d�tched �rea,Djtches and cul�erts appe?re� open, with �he ditches lined with Ye9e*-at�on. . Phot� 1) Loo!�s south an� east along the trail where X--cuYVerts �!nder Renton=Maple V�y Hwy c�nverge to 48" ander the trail by strawed area, � � 2) Looks upstream from trail with drainag� channe? i� backgrQund. 31 Vipw from trail towards Cedar Riyer and. 349th Av bt^i�ne in �bar,kgrou�d. 4) Yiew of box culvert �!ra?ning under h�,V t4 dit�h that dr$?n� under 149th, 12-8-93. Spoice with Ken Krank, SWM-FM, regarding widening of Maple Valley Hwy and drain- age. Pipe is being removed and box culvert in place of 48" CF1P under the trail. � irc8IG�7: �,w�r� ./�, L_'r �.� ��`` �to�� � � �� � � � � �� � � , � y q�~�C bl-� S E i , . � �8'S �,�4 c�P I � ! � �z�°P"'"'`5�., � �— =�—.� � � i �/ '� W�t �'�S��LN+P �f � xs J,c � . ( • mP �t . _� _� —�.� '!`� r��, _�. _� . _ _ �' ^ -��— � • . . 3-Sb'�K�Y"S��,s4 - - a�,r `a,� of ReporL•�( /�J� By: � ,�..._. _ ' � � ..amplainane notfied by G�o-S by ✓�h�ne letter persor►al contact�. i z- i S`-q3. sp o�� W.�,���kn'� S�,e S l � �i-�ar.� �S'°,�J�v( CrwL*✓'Ki�t M �� �S S'�K Y�aJ'I�1i.-[ C�l.t�rf �o' �i t�i..64 l.. w�w f K l. ���`� ' a..�l.r....L .i... ,c��- � � l ! NUv. /. ZUUS 11 :05AM KING C0. WLRD N0. 5898 P. 6/30 KlNG COUN7Y SURFACE WATER MANAGEMEIJT DIVIStdN DR:A.�N'.AGE �ES'�`ZG1�7'Z�N REPOR7' ' Page 1: tNVESTIGA7lON AEpUES'� � PROBLEM �Q.�l,��� � T1'PE _ ceived by: y ��f Date: �� OK'd by: F�e No.� ,6 Rac�ved fiom: �` (P�..}s print plair�fy fa.sc�rni��). (p�Y) f�) NAME: t��-�} K j1�,�J1C .S(�1y17 �yyJ PHONE �.�� ADDRESS: �C��On7 �1..�-Z/� Ciry Sta�e Zip l.,ocation of problem, H diHerent: � � o CHI4R�E n Aafails of Prob/em: ��'9� i/c sC' " � � � wC o �—'� �/'c s �T� �%c�ri,o y 1�c�'r�T-��% �s �rJ ��- �' W/% `-"7✓1/LJ { �i� /4 � r �S 0�'r" �- �� / '�d ✓c�.T � J � ri ��/L V�-`�T �S �<�'�/ �(��c� ,�.c/ �b�� Od��Gd� �n/Y� ��.�✓r Ov� �/�/�.�5"�.-�J C—���-_� !���G��. "�Oc h� N d'7. ��o���-� �'`�� �',el��/�`T���- fS �G����/��' f,Js��'�-� �,��-� (�3.r,s� �i��.��F�e.e-�r- �e Q�-'� /,,�v ���/��7': �s D .��--- T� �F j��� ���?" ��G`J�-S _ Y�,Cly--r �� �� a �a ��� ������'� ? , ��J ��'�r�� e7� �J`�� /E%VoJj' e�' �.te�Skv*7 Other agencies �,nvolved: (Give details) � �eported/mpacrs; � Properties- Dates�frequ�ney of occurrences: Home � Access road ,_ Septi� system � . � outbui�dings, gax-age � Yard/landscaping . � Othez propexty _ Stream, lake, wetla�id � .ot»mer�ts: �Ii1�fRN�L�1j���4�ttfi4��IR!lt��;Y[R� � �� . . , � . . . '4• . . ' f,J7� ' v' ••• ��ti+�M.���P�v.vk.u�� MrMV�wF�• IqIF`��i... ........ .�.._ .�....�. .. 7�. .... ' ,< ...... � .1 �.J7 . '�►� �`wrirtitkiw:+ei�rf'r�w�+7iiii-Zi..•. .�Ti�. oration/T�acking /n�o: _MG 1/4 S ZL'('23 R S Parcel No. �`� i ype . ------_ 3asin L G�2 C�unc,7 pist_� D!R iief/Ghg N�: Clty ' �ield investigation needed? "12t name: Block No: - Loi No: � ' � taken: Assigned to: Tumed to on / / Irtitiais: KRO�l� iUMAS SROS �f`�EW: ...� oaYE c�os�o:���6 � Y3 o�rd: "� S�E �3--o9�c o�o: c.�-� �� - scv-�.crz.�.¢��e � , NUY. /. ZU05 11 :U5AM KIN6 C0. WIRD � N0. 5898 P. 7/3Q-� �..-..,. . KING COUfJTY SURFACE WATER MANAGEMENT DlVISION DRAINACYE ZNV�S�'7CAT�ION ��PO�ZT ' � . Page 1: INVESrIGA71ON'REQUEST 7ype �_ �eived by. -��_. ---------------- Date: �2�—�S� OK'd bY----------------- File No+�� =�r/„� a.LG Received fiom: ' (Please pfint plaiofy tor scarminp) (o�y� {�e? ' �r's� 1 gr,2�Gs'4�?a _or NAM�: 'r O s D PH4NE �'�5���3� AD�RcSS:�.,�QZ£� (�8 ��✓en�.ce.. S. City �e.2�— State�� Zi� j�'D-3-? _ Loc2lion oF probfem, if dif�erent: �o,,���, �d� o� ..�� 1 ra I 2.( ��DLC� !`7� � , Repo�ted Prob!'em: � � ' . Gf�� ��� • /'`,�/� / �� . A�� . f� ,� . . �"— - � '�"� ��%+-�e�... � ' . . ; � � �p �-3 . � � . � ( ��� �c� ��i'�`�- . . � y��� ������-�--• .���' � �� � �7�- ��f7fl 7�''� 3:.�n �l . � .'i�i i.Gl:�c: � • �'Jt �O. 3�7:�C �p: O�;�a; 2g�ncl�s i�volv�d: No r=ield (���ss:ioa:io:� t�!az��d i � . ' . t:,r�a�,) � .. .............. ..,. .................. .,.. .� :il�cx*�*w�:�.�fit�rRa.a�+r�tsr�:,rsw.rx ;clEs:� ' �i�'' �isi 7' ' /+ t�^:irr: 's�+r#ic;rfxiv'fsaiifi�s.r','cs�i�:::"+r�s � ln w 3,{� e 7'{.wl,l�~.�_.li'v:�ePL".I��'���iV.�iFi��..�H�l�Ij.3'....�'�'�S.i'�:aSI^ri.. .. -•� �:r r e i af;r'���'»�:�-w@l:i�Yr�� ...Si.•�1+ i�%S'.:�R?�x.i:.:..,.....:e:.....a.............r.o,,....:e:.a..�«,..:.v:.r�....,.::.:i.K«t• .. ».«�Yr.�.r>.s.......w:w��..�....... ;:ILi:i'.`nsia:ti.:. .:i.:cse..".'..�' 'S:�SS�:7•it�.l`::, !,}, �� �� 2J� 5 ?aresi �'o. Kroll �h.�ros: Nsv:l���J� `� ;,� s : . r � . o,d y2Dl a�s:n GGI� coun��� ��5� I 2 c;,d�oz n�o: � RrSPONSF: Citizen notried on. � by �phoFl?r le��ef � in person - I . � . . � � �p ,�.�^ `� c�' �� �� D/SPOSlTlON: Turned to on by O�: No fuRher actlan reca-nmenciQd bec�� Le2d agency has been notmed: • ' � " _ ?robt�m has been carrected: � No probiem has been identi�ied. Frior investioatio� ad�resses pr�b;e � �See hlo � _Prirate problem - NDAP will not consider because: � � Water originates onsite and/or on neighboring pa�cel . ^ location ls outside SWM SeNice Area. � Other (Speciij�): pA7E CLOSEQ: �/ � /� by: � ��j� py��� .___�j_ ' . . .. . _. ._ , .. . NOV. 7. 2005 11 :05AM . KING C0. W�RO Z� f�NO. 5��� P. , 8/3G / KING COUNTY SURFACE WATEa MANAGEIVSENT OIVISION ��.�►.r�rA�E z��s�rz��.�czo�v ��o��r Page 2: FtELD INVESTIGATlON .__.---------------- .----_--____— ---�--�-----------------------___�.—_� � �� Jetails nf/nvestiQetion: � • • COHPLAIIQT 95-1162 RICHARD• AAYSOM - wsDOT DISTRICT l; AREA 4 znv�e�tigated by Alan 2ieyere on 12-21-95 . � � - I�Qr. Hapecsn with �he WSDOT ie aee3.�ting an elderly Mr. 4�ill�.am Veenhuizen who livee at 14615 s8 Renton-Maple Valley H�y and owna Beveral hundred accree a�loug the gouth aide of SR-169 at thfa lo�atian. Mr. V wouZd Zike • �o reduce the amount of floodinq on hf.s ,land by cleaninq out about 300 feet of a raad 8ide ditch which drainp a porta.�on of his property north - towarde 31t-169. � . • As part of this drainage 8ystea�, Dir. Aaysom.hae scme concerne about the � flow capaci,ty vf the County'a drainage eyetem ou the nor�h eide of SR- . ' 169 where two aa i.nch c,23P pipes flow uader SR-169 and ir�to a 400 foot � loag open ditCh vrhich is drained by only oae-12 inch CItP which is , . presentlg hslf f�x1Z of granel. Thie drainage system north of SR-169 ie apparBntly on county Parks Land adjac�nt to and ia the Cedax River •Park. Hoth an engJ.neer and a figheries eco2ogiet are n�eded to analyze ,tkse . $yatem froa� the Cedar Rfver vpetream about 180D feet to the area eov�h • of SR-169 �o aeeeae both the habitat/fisheriee impacta and hydraulic capacity ieeuea aeeoci.atefl with the cleaaing of tbis drainage ayetiem. _�_`�,�. , • ' ' ,. „N� 7. 2005 11 : 06AM KING C0. WLRD � N0. 5898 P. 9/30 � . ' , ��. � KING COUNTY SURFACe 1NAYEn h'fAN�GEM�NT DIVtSION � . .I��ZAX�AG� XI�IV��STZGA'Z'70N �:�O�ZT � . r� • • . , ' Page t: lPfVcST)CA7iON R�QU�ST Type �” � � Peceived by: (� D .�,�Y.�w�� ', Date'. 2 q - OK'd by:'. . � Fite n'o. ���3g� ____--- ' _--_—. _------------ --- -�--------------_____--___-...._----------------------. .^_ Received frorf'�: . • . , ' (PleRse prinf plainly tor sc�nninp�. . (��Y) (Eve) - N!',N.c; .e�/ c9f G c� ' RHOt�E 2.h 5 -SS Z��_ � � ' RD�ncSS: ��`� � �� � vG��1 City. . . ' , Sl�te• %ip • _' .Location of probl '... _..d e ent: _ �~ -.. -- . ----y�,��'S�' Off"���t��l���� .. : .- �- . .: . em, t i� r � . Rspor;ed P�ob/sm: • ' - . . . . ./�c.���e�...f�:e�o,(C_ j�a�� i s �w� o�� s-����.:.��� �� �-��s. � � � ������`�.� r � �� w�f1 U/v't.�C �.w G�L(.d� •�•�ili� • �'L �..�a.dJ �c�� . - r.-��� --f-�.;� �,;.::.�. , - . - � . . . . �- _ . M�-d ��,:. C.,�.�.�(� s������--�-� p�:-�� . . - .� - - � . � � �:�. :.ar.:�. - Lo: Nn: >>xk�o: , .•, . ' .riIi Ic.'2�3�'1C:`s5•...+Ji:/�v': . � • . •, i\�O ('i��G; �i��'35::�r3ti�T1 �s�vS� • . ' s:n'd::s; • =�>:sir:3rr'i:��..1'r:�i�'-,rl�i��r,ilFii+:�••.1•"��-" � "��"";i►'c7'> ' �Vy�•ji�+�j' 1 rrY L-c' •.+•�••-fi{.�- yr,'r'x--+il"���eies�%�i1r"reY.'.Mxr.ie:e.r'':3K ;::.�.'��*J!x"h�f;:.�'R's..rd'a�a"�t" ,'�' `�' 3��-x�rCxw.i��:..�::��v:.:�: =!""J"J.s',tt�.>.:_ ��7� 1��`7.�:an •..7.�l-�.-i:� �r s .tL .R,n•,N.;.p.w�.�.u..w,a..w.n,:.d::�r:E��..a.Y.�f.ivF.:�iGvM£,?is:,.�+�+c.`•K.zlf:'� ,.. ,w�_ :..�.a....aw�.+e.»•..ew:wa��a.�.:.w:�.vn�xw _ ���� • 'ar��l ;.'o.�c3�J �7��� Y.to1 ��' i�_3ros: N;s_4:� :/; S i - :i . ' • - " . ' . O:d • .C7Jr : ��5::�,�i9 ��:,�►��► ��5�� ��;o� �o:- . . ya-,Ol� • R�SPONS:.' C�:iz�n not��� on� by �hanp� l��t�r `in p�rson � . . '. C��l,�� (>(f1'L O� " �Sd U G� /!,a cQ�,�.�.tw r/� a Lc r,�wi c-��G� ��O't� Gg/ t1-., 1���- �rfa v� ! � � 5-f-�oY,.,.� J' 3 t�5 � ��,,,�:�.� �,,.�Q. �a�.� p�� a G� ���� NQ�.w� �� . , rtvt.� �..ia-� �,,,.. a�c-ti..�sc.,,� h-�.• S�a e,,,,,,w.%�f� g G.tK-(c�- 1,.-.�. ���✓ c�c o�-�.:��(�. �D�SPOSIilON: 7urned �o on '� /s by JG ��: I�'o f�ther Gction rec���c:►sr�sd b �e2d zcency has basn rio;riied:' ' ____. ?;obl�m has bo2�1 Cb:ract�, � � No probler;� nzs b��n �d�nti�i�d_ - rrior inves�i:,siio� zc�ressps p: . , —Sec -itE � �?ri✓�:e p�oble.;r- ND:+? Y�ill no� Consider'bec2Use: � 1�'ater c;ioinz;es nnsiie Gnd/or on nsighboring parcal • . • - � Location is ot!'�s�de SY,►��{ Service �re2. • • � Oih2r (Speci��): ' D:T; CLOS�J: �/�/� b�r -���d�"✓ ' . IVUv. !. LUU7 I ( : UbAM K1 Nli GU. WLKU.v d,,,._..,.� N0. 5898 �P. 1��3Q � ----- � � � . . �G� � KtNG COUNTY SURFACE WATER MANAGEMENT DIVISiOtJ DR.A�A.G� IN'V'ES�'ZGATZON REPOR,T Page 1: (NY�STIGA'TJON'fi�QU�ST Type � Received�by: ._ Date: � � OK'd by; � F�e-No. �` /6� ^ Received f�om: ' � (Please pr;�t ptainty to�scanninp). (qay) (Eve) NAME: f'HONE ��� ADDAESS: ` — City State���� zip���i--`-'� Locatian of problem, if different: � � Reported ProbJem: - � . (�_ � � ' /`� . J �� . . � � � - � . � � , . . .... � - . , �,,,,,� G�us,�, - z,��'� zs��' �. �r��- ����"� � . - Plac rzame: Lot No: Btock No: Other agencles involved; No Field Investfgation Needed ��'' ��; y�����*� • .. . � t�nw�s� s >.,. ;�€. s- ';�t � ��' �- � � � /�!!�._�_23� 23 S . Parce! No. 232305 q08� � �on Sl6 w Yh.Bras: New 6 56,T`� , 7/4 S T R • - Old y2�/. E! �I �Basin �R Councrl Dist_� Charge No: � • �RFSP4'NSE: Citfzen notified o�,���-�by `�ptione_ ietter �in persc,n r � � �-l�� �(�, ��,. -�,.e- ,��-,� .�...�;��, �.�.� �� �;-� ��-1 ���, �,��'� � C'��� ���-�.�� �e.v,�,� G��"S � � �---- ��- DlSPOSlTlON: 7urned to on by OR: No further action recornmended becaus. ,�Lead agency has beFn notified: ��Y Q`�� /�U.=;�/`��l� �Problem has been corrected. ^No problem has been icientified. Prior investigation addresses pro�iem ^Sae Fito� - `Privale problem - NQAP wil!not conside�because: . Water originates onslte and/o�on neighbwing parcet �Location is outside SWM Service Are .� u Other (Specify): � .� DATE CLOSED; �/fl ju��� bY� . �������Oo✓ ' . ' _ NUY� /. 10U5 - 11 : 06AM KING C0. WLRD NQ. 5898 P. 11/30 � �I .. ,Y,` ��g��ty FQS NO 9iF1661 '('j;OMA.4 PAdE 6S6Ja - I Dcpartment of Natival Resouroes NA1dE: EVELYM DSL 8AN1iD � Sucface Water INanag�c»ent an�.ss; iwi�ias�avs se ' PHONE 233.3380 AA'Tk 9,Z6r96 � DRAINA�E INV�STIGATION REPORT �,� 4 n�rr�s ncn ' Ri6LD 1N'V�SY'1CA'l7oNi N DETAI�.S OF YN'VESTiGA1TOI�T: Y met with Evelyn Del Santo at her heme to discuss her concerns about Madsen Creek. She is claiming t6at K'ing Coanty has altered th�creek so it floods her property in the winter. Ael Santo had t'our fir tree die bCcause they were sabmerged in water. The area i� west of acr � garage about 100 fee� The area has turned into a swamp accordin�ta Del Santo sxnee the County did some work on Madsen Creek. ' I talked to Karen Goto the Seniar Engin�;er�tin charge�af the Eltiot Levee project which is located dear the mouth of Madsen Creek. X asked Y�aren Goto if the County is doing any work to caase the creek to backup. T�e County isn't doing any woxk on the Madsea Creek channeL Karen said the problem may be eaused by tbe Beaver dam located on the City of Renton's praperty east of the Maplewood Grolf Caurse. �asked if thc County planned to do any work to fix the prnblem?Karen aaid if t6eire rvas any vrork to be doae on the 1Vladsen Creek channe!that it would have to be done by the Ctity of Renton since it was located on the�ty � af Renton's property. _taUced to Larcy Gettle Senior Engineer oi�.o�tl Drainage Services Unii about this problem.• Larry e�cplained�to me that this r�►vuId be a City of Renton problem to address. He suggested to get a contaet person with the City of Renton and also send out the brachures on Beavers witb a copy of the Trapper in Blac.�c Diamon�. . I will send a copy af the Beaver Brochures and get a eontact person for the City of Renton. Sam Chastaifl is the contact�erson for th�e City of Ytenton. 235-2568 - ' � NUV. l. ZUU7 l l :u6aM K[NG C0. wLRD N0. 5898 P. 12/30 Ii I ' SB 70NES PLACE ' . i s�xcg: � � L'U.TOT BRTDGE . � / CEDA,R RIS��?R A�na.sxsr ARBA txrY Op�Niiot�t PR�OPeR7Y 149T�-Y AVE SE , JONES ROAD � , NOV. 7. 2005 11 :06AM KING C0. WLRD N0. 5848 P. 13/30 � KYNC CUU�'Y'VVATER AND LANA RESOURC'ES DT1nSI01� ���' DRAZN'A.GE INVESTYG,A.TYON REPORT - • . Page 1: INVES"f[GATION REQU�ST 'j'y� !��`� OB�.EM:" ___�� - •�J � �J r/ K�cE� sY: Date: (�� �OK'd b : Fir,E No.-g�``��� Received from; .� � J a (� ) �� N,�: Pxotv� �ti?r4'N��o �e AoDxESS: ~ •City State Zip � Locatian o�problem, if different: • , � . � Reported,Problem: CALL I'IRST � (Would Le7�e To B�Prescut) � r./'!!!� GCiC��� ��=�-�-C.>.✓�,Q c'��Z.rzi�L� /�',�D ��°�'�l ���� . � l���y'a�.��,o�� �� s���n� ����� C'�'I ���� . .. ��?�� - � � , • - � � - �- . . Plat n�ame: ;�GZ���Qf/!? ��'�ZQ1�r+� � X,ot No: Block No: � )ther agencies involv�d: N'o field investlgatiou required � • (iniQsls) �_ � � _- ��I — - ' — - - � �/a S T R Parcel No. � ?12�J0� '���� I�roll�����Th,Bros: New la J�� C� 'yJ� . -- - . , Old �-Z-����Z Basini� Council District�� Charge No. ',E'SPDNSE: Citizen notified oni by: ry phone • letter W �^in person�.' ~w~ TrM� ���f� fC'Z�" /lAC7Tc = GO wd°�'�v�-.v7 CiM�f�t`s`9 %a/!�v/�/.-�< �'� fy ����cJD �/��r.til r✓G�'_ isposr�r�[oN: Turned to � on � / / by OR: No�urther action recommended becau�e: ��ead agency has been notified: . Problem has{ieen corrected. No problem has been identified. Prior investi�ation addi+asses problexu: SEE FI[,$t! , Private pxo'blem-NDAP will riot consider because: � Watez originates onsite and/or on neighboring parcel. � r.ocation is outside WI,�2D Serv' a. Other(Specify): 4.TE CX,OS�D: 1 .� / B : �//�' `� y l`Ro�G.e�I� NOV. 1. 2005 11 :46AM KING C0. WLRD . N0. 5898 P. 14/30 ��� �I1'�IG��VVATER,�TA I,A�YIRCES DIVISIOl� � n12AI1vAGE I�'EST"YGA►'��ON REP4�2.�' � C/�J '_" Page 1: INVESTTGATION REQU�S�' 1`ype (,� PRos�M: � I �CEIVED BY: Da#�: � O�C'�b ' �� �'IG�N�O.."I�� � G� �Zeceived from: - . �paY) �f� ��ve) �.,,,) rr�:��..��4i p� � �i?�C� _ PHoNE ..�a�"��� ADD�Ss:_ �c�-��,p ��l�'�9�7 �/1►��� City��.��Y� State Zip I Location of problem, if different: � . � s�" c,�„�..� ,Reported Prvblem: CALL FIRST � (Wovld Litce To Be Prescnt) � • ��G2Gi�'L� ��?.�'�O �QtG�i Lo ��e.Qo�� / `'y'�''G� �?-�i� ��oa.c�/� �y� ��Q� ��� � � � � � �G�� � . r .. ... .. .. . .. .. . . .. . . .. . . . . . . � �a co e"`�4 I . . . ... . � . ..�a .a� � . . . .. � q!n- 1�o�I �l o�� �� w�h ps � �!v� t.� 97��6 �,Q a��' r�sr���-, � � . f� d��law., , Plat nazne: � � Lot No: Block I�To: Other agemcies involved: No field investigation required d.�0 ��". � (inic�als) `L� �� �Z . %a • '�s r R ParceE No.23�30�—��33 Kxo�1 $1(oW Th.Bros: New�10� v ota �-2 D i � � l3asin� Council District �� � Charge No. -,iP,,�SpoNSE:�...Citizen notified on ���7-!7-u.J�by: ?rO� �phone�^.M��Ietier �MM �n pexson---`w�^��. �.��-e� N�r- �m� w;� a-�(.�. ��K���t a1�-I -1� �/�a� Y�r�g'� �j�--. �. �t�.•�- �, �.�-�c �u��r a.� '��+ �. s� -�-�ec�'� � �..�.� ��v�'o c,.� �,.�5 „���ze ,!o Mr- �:��.�- �t� c.lcya�_ � �5�, "� 1 DTSPOSITION: Turned to � on / / by ' O�Z: No further actio�xecommended because: � Lead ageney b�as been not�ed:__�T (�e�J1� ���G.�,-�-� I�►tl, Probte�n itas been correcied. No proMem has been identified. Prior investigation addresses problem: • S6E FILS 1J _.._ Private problez�n-NDAP will riot consider becatzse: . � Water originates oz�site and%r on neighboring parcei. � Location is outside WLIZD Se ' ea. �Other(Specify): DAT� CLOSEI?: � / By: - y/��v�DSS�i�I� � _ NUV, !. ZUU5�11 _06AM . K[NG C0. WLRD N0. 5898 P. 15/30 __._-- .. . ._��-- --- ---- �ing County r�e: w�r.�,���sorr �tnplaint#97_1282 � Depar�me�t of Natura!Resources Address: 15016 149�AVE SE �eived 8-20-97 Water and Land Resources Division . . Assigncid Date 8-22-97 � I,ocal Dtainage Servfces Unit � City ItENTON State WA zp 98058 Repart Date 5-26-9'1 P'hone: Day 226-8223 '�omas Bros.656J4 Basin LCR Coq�acil Dist. 12 tnitials DCA Phone:Evennig STR 23-23-5 Faa�lity# InvestlgatiQn D�Ce:8 25-97 Pnrcel#2323059133 Maintenence Div.4 Plat Netue: I met wifh a✓�lie�snerson at his aailor at 15016 149"to di�scuss his concems about tlie Cedar River. Mr.Finarsptt did a project a few yea�back and raised hts bank. Now the property next to his dn the eastside is lor�er and the water is go�across his property and floodiag the neighbois Oo the soc�d►. Mr.Fametson would 1�7ce to know what is going to be done once the bridge is rettawved in the next couple oPycsrs. Hc would tike to sec the County property filled to the level of his yard and ba�ilc so ti�e water would stay in t6e river corridor. I walked the area with Mr.Etnerson and explained that a roads profect was iri the works to remove the bc;dge sad move 1f�e bridge ugshr.em. I toid him I did not Imow uhat ti�e plan was to improve the bank in that aiba. The property ne�to Mr.Emerson is �owaed by IGmg Caunty. I wiA find a nAme of a person tasc Mr.�nerson conld talk to about ti�is projecc co��►d oat what is going on aad �trrhen die project would be built. No pcohlem identified aad wi�l refer the complainant to the proper agency in chargo of the Jpnes Road brldgc consUvction. � . J PRQI�(.'T AR&A BY HMBRSON 'w�� i�� � �.�„ � . � ✓AreEt of ' � �� concern H[GH H2D FiAWS , �C ROW � ' twriH Rowx kRIYATE ACCES D ',�s� 1 i t�-t`�NOV. 7. 2005 11 : O7ANH•��KING C0. WLRD�.K�.y�..ru�Ln.r.�vuxc:�;�L�viS�N0. 5898 , P• 16/� �RAINA,GE INVESTIGAT�ON �2EPO�t�" � � � . Page 1: INVEs-n�anort R�Qt�sr Type � Pxos�.�s:_ � ,Ix/�A L r�c,�r�J � � . ''�c t��ED gv: �• l��T7G � " Date: �'�3���OK'd b FrLE No. l�� ��� ,.tcceit�ed from: • • .. . � � '(�Y) L��.� (Eve) � L�,.� I�ia�: /UA �l^`O j�c2ti n�Pc7l� Pt�ortE �-�l��� � ADbRESS:- k/�10� LqNn �1. /`�' , �.��. City ������ State�,� Zip , , . Location ofproblem, ifdifferent: :��5� ��:� ' ���jO��L ��y ��e./y,r�✓ Reported Problem: CALL FIRST Q (Would I ike To Be Present) �'���� ��Z��J�����'�-��� // �vj/!�/!�� .� l ��(/✓� �/� �!t1 G/y �Ol�Cr !� ��S �rJ�l'�� ��"� /��'2c/ ��p.st�.� � l�e�� �� /�9Sc.�./ �. �� . ic� /L/'�7; /C ��'�S ��t-�✓� ��� �f�SPoc•,�a✓ �To F�``�� _ �,v� e.�aPGL9 �'� , . .- - . ,-f�r� P;Pl . . ��e: � � � Lot No: Block No: ►ther agencies invol�-ed: '. • No field investigation required (initiats) • • � • . TO�$COA'LpLETED BY Eo11iPLAINy'PROG1tAM STAFF� . � . ' • . . . •- � � � � � • ' � S . : T R Parcel No. a�va,a7��Jr x� Kroll •�l��Th.Bros: New �JCp f✓ / � � � Old ��� f jZ � ' Basin��� Coun�il Dis�rict � Charge Na. ::sPon•sE: Citizen notified on ,$�2a-`�� by; �/ phone �Ietter ui person � l�o P rv 1� l�,rr� � c1.e.����; ��d �, � . spost'rlo�: Turned to on / / by�� � OR:.No further action recoaunended because: � Lead agency has been notified: � � � - _ Problem has been cor.rected. � No prob9em has been identified. Prio�invesrigation addresses problem: 5EE F�[.E N Private problem-NllAP wiIt not consider because: - Water originates�onsite and/vx-on neighboring paTeel, � � . � Location is outside DJLRD Servi . Other (Specify): '� CLOSED: �/�I/ � $y: . � r> �I/D��E'.�/,►��� � 1 I NOV. 7. 2005 11 : O7AM KING C0. WLRD � N0. 5898 P. 17/30 — Complaint 98-0540 Hendren� � . � Investiga.ted by Robert Manns on 8-19-98 . . � . ' . . � � . T checked the nd �d ' ' po and the area aroun it. I saw the recent construction . work on the creek and pond; but � saw no damage to thc facili,ty.�Io I�� - problem was identified in the invesi7igation. � . I spoke with the trailer park manager and he told Mrs. Hendxen i.s on vacation. . • � . : , �.._� . , . ....�+t ., , , � . . NOV. 1. 2005 11 :01AM KING C0. WLRD N0. 5898 P. 18/34 �2�0 �..�-�� • KING COUNTY WA`�°�AND LAND RESOURCES DIVISION ��}�� DKAINAGE INVESTIGATION REP4RT �j _ �} Page 1: INVFSTtGATtrn�t RLQvEST' 'I�pe �..1 pRost�vt: �� . BY: Date: ' OK' -��`�� E No. �--O4D¢ Received from: � ' C��.�1..1�,���`,����/� (�=ve) L..—� T�IA.�: � ADD 5; City ,��State Zip ���� —��-�—� � rrr�e � Location of proble�if diffe t: . I Reported Pmbl�m: CA,LL�'IYts.0 L � (WaNd�.�oe To Be Present) � � �'`� �. � . . � � CJ�,C/ Q� o�r . . , ' , cS'oG�- c�/v I . -�� , ���;�� �u� ��...Q.�.�/ C�� . . , ' ��.�,�� .� � t� ��Jz� � ��a�� � . � � ��� � . , . _�lat name: - Lot No: Block No: Other agencies invvlved: Nv fietd investigation requ�red _ inir;ais} — '_- - — ---:,r e —— �. ' _ — _�(` '�J � r'J - — - -- - - r Z � �a S . T R ParcelNo. �- � o���� Kroll���W Th.Bros: New �o�a�? �5 . z� Old 42 �2 Basin L�� � Counc�District .12 Charge No. � RESP�01v�s: C��n notified on � l q by: phone tetter in person ��`� r-,D��✓.� S y S Te� LV�i�r1�6 � C�yUl�O TO ��'�"`t' �!�/o�.J'G S � /'�1,��� DzsPosrrrox: T`urned to on / / by OR` No further action recommended because: i.ead age�,cy has been notified: � ' Probl�m bas beea corrected. � No prablein has be�a idcutified. Prior invest�gation addr�eases problem: S��# � Private problein -NDAP wiIl not cansider because: Water originates onsite and/or on neaghboring parcel. Location is outside WLRD Service ea. ��Other(Specify): DATE CLOSED: � / �/ �� By: D6^^''��T/G ""'�''� ���P� ,�r�l���'-� 1 - . NOV. 7. 2005..11 : O7AM_• ..�, KING C0. WLR6 ;�. . , . . . , . ., ,;.. - ��Na. 5898 ' P. 19/30 � - .�.- .,. r • �.T. COI1lp�alIIt���C817 Investigated by�at Siwmons 05/17/99 • . . I was called to the site a�td talked to tfie woricas vv�o fon�pd ti�e pond9ng water,'ihe problem erea was adjace�nt to 152°�Avo.SE wb,ere two so�id lid catcfi basids-are located East of the fence.Tlxe road catcli basin draens to We oil/'water separator,flIberin►g and inf:itration basins.'Ihc water was ponding around the infiltration basin.I opened tr�each basin aad found ti�at the oiYwater separabor was OK,the filtratxon ba�in was feill.of rodc and infiiltration was dra�ed thecefore the�crater wes not comung from this system.I asked the woilcexs aboui watering lines in the grea and ho poiated out thaL a tine may come froin the puinp house to a faucat near Maple Valley�-Xighway.I told him t}�aC that line mighi be leal�g because the road diainage systaim was drsinet�to a mucb lowcr leveL I also stabed that the storage basin needed cleaning.He thought t$at the bnsin belonged to the Roads Dcpar�ent N� �fb�s � � ' �i . _ . 11�Iaple 'Valle�►Highway x�. �-- Water Faucec ' � Filtratioa Basin � � Ponded Water 1 , 1 � 152°d Ave S� � ' ' . � ; . : • �_ . . ;w., ' ' NTS ows � � . i � < < � �� Wood Fence �—�- Pump House . " �- �i . . ;�;, ' � �.�; . �.� �.� �;��� . , . .� � . :;�, •�4� 1 �,��� NOy V^l. 2005 11 : O1AM KING C0. WLRD � N0. 5898 P. 20/3u � KIlvG Co�vrrrY WATER ANn LArm RESovxcEs DY'V�5rorr ���„� DR,A.�N'AGE INVESTIG�A.�'TON R.EPORT � � Page 1: h�VE.�GATION REQ[JESr Type �ROBL�M: - � �� � RF.cEIv�1�Y- /Vi:� -Date� �t/l Z OK'd b� ��'"�`i'F�[.�No. � 1� Q�� 7 l Received£rom:�M1/` - (�Y) �� - (B�) L.� P1,v�: � 1 ��v�-��Lf't°�, Pxorrg �?-(..e —�Z�2 ADDRSSS:� �� � �4"��' �� � Ciry State Zip���� Loc;ation of prob�em, if diffe.�ent: Reported Probtem: GAI.L 71�T � (Woald L�e'7I'o Be lPresent) , � - � �I ��10�Z(�4.�t� Lo Qt0��1l,UM,� �y �(,�j-a� (�./�-�-�.� , � �/�[„�!� GO 11L��7/T.(.� '�d L�'-!/rY{,� DY�e/� i� G,u� a�t� �fl rrur� ,I%Yu�4 �-t,o�.��4-�•. t�,�1'u�- ao �-f�t�to ' � . � 5� � Ga-��w 77 � L�.G-�s�-�' c.(�r��H� ( �� �s �w �� �>o..,�`o � !`c�-c. �S�cn.�� s r��� �.��� w,.���� , �.�(� w�� s C��p .�.-,�.._. � � i e���.,�Zu.vrs. S� t 5 �vr'�.CA�' o�-�- 1�!� � S� �r� o�F' �ov��i ��"�' �^..�� �i Ef I r v� 6 v�..-�'� . . ,o�.� q6'1��I . plat rname: Lot No: Block No: Oth�er agencies involvcd: ' No field investigation required �� N vJ T2.� 2� � . %a S . T� R Parcel No.�'��t(�R'1 Krou�� Th.Bros: New..L�v��_ � Old �7�j�( . Bas � ' � Councii Aistrict �� C��arge No. .RBSPONs�: Citizen notified on by: phone letter in person ��/7- 4 0 : t�r S�d sS �d w��'� l�-nJ. /1`c3?" �-�''t-7' �� ��� ••n/,,�L . � Q'�i�.c f drr�"� t'a l..�e 2.�. ��v ��'.�-/ IP-I d�i✓�r'7r.I+✓� �d�P�a��S �d Ber �Qr D �Ce��.c/ �fdt . AT,SPOS�TTION: Turned Co on / / by OR: No further actio�t recommend,ed because: Lead agency has bee�u�notified: � " Problem has been corrected. No problem has been identified. Prior inv�estiga#iou addresses�roblem: s��# Private pro�ilein -NDAP wilt not consider because: Water originates onsite and/or on neighboring parcel_ Location is outside WLRD Senri a. 4ther(Specify): DA�CLOSED: �l l7/�O By: � �1���G�7� � N�OV.�7_. 2045 11 41AM . . KING C0. WLRD : . , N4. 5898 . P. 21/30 ' � , ;,,1 y,.. �°�lu-.• �'�� „Y. .,` �,'r`.'' I � i. . 1- ..1. �j> • ' _ ' �;�.. .. .. . � � �� `,��.��i ���W, Complamt 99-0797 Chapmao� . Investigaud by Cb�ris Treicteel 11/t5/99 � �%� ..'= " Called aad visited with Mr.and Mrs.Chapman on site. Toured the grounds with Mrs.Chapman,she st�ted ;�'}r d�az she�was very coneeratd with the c�eek flowing over the bank and flooding their bae�C yard up to rhe " '`''�' bottom o�t�►eir door.The Chapmen properiy sits aboat 3-S feet lowcr tlaan t�e s�eazn ba;ause vf the berm ' '�{`4 that they installed along tune ago. Tbe honse stts abottt 2 feet below the cxeck,and about 75 feet away. � Mrs.Chaprnaa�also informed me ihat their p�opcxty continues on the other side of the creek but tb�at all the � 'k- sediment/silt�at hes come down the cxeek fro�2 Fauwood,as entirely covered their back£ence,she stated �',-, . abouc 3 1/Z feet. I also tallced wi#h Mr.Cbapman who was able to give moxe history of the ar�a. He,stated ^ that there used to be ftsFt in the creel emtii upper deve2opm�nt took place. He aiso said that the neighbor r��� ' put in a 12"steei pipe in the wrtleL area of 2lte creek into the Cedar river. I could not locate that pipe as the ; � area is covered wIth dc�ris in the cieek. The creek nms fro�t south.to north,starting at a couple of poiuts s end thm raerging together before crossing tradec Hwy 169 via a cvlvert. It the runs westerly aloug the �` Hvry until it gets to the soccer/softball pazk located just easrof Mapte Valiey Golf Cowse. It theu goes . nortl�irno a big wetland/holding area beforo it continues into t�e Cedsxr river_ Mr,Chapman is eouvioced that if the pipe is renaoved and the sediment taken away tbeu the�sh will return to the creek. This also appears to Ue a reason why 149`�Ave S�gets flooded. ' <i�a������.��������������ra���rrr��...�'��r������aa���r■ , � � o�, r� , ,.�� '��.;;r;�•.rr"�...•'���-.;�.� �, . . �. . � ��I�� 'h,�i��+.;;v:`v.tx.s":��.y - �``- 1501714S�h Avs SE } z , f� �� ^?�: „' �, Dl�� . Wetland/pond ' v � � ATea � �� � � - i ' � . . f � 150311481h Avr SE a� . ! �� . � To KGRouton � � . Park(pic 5) � . - F , . � � f � ' n NOV. 1. 2405 11 :07AM KING C0. WLRD ' '�• �°����-��-^�^�� N0. 5898 P. 22/3C- � � I�ING COi�VATER A.ND LAND��T�CES DIV�SXON. \��"� V 1�-"-�o DRA►�1�1ACE XNVESI'IGATION REPORT � �� INVEST'rGATION REQUEST T� ,�_ pROBLEM: ' ttECE[VSD BY:- �� Date: `��3 O� OK'd by: -'"�"°'FIL�NO. �=�1'�'Z Received frvm: - _� (Day) �� (Eve) �_._ ) NAME: � PHONE ADDRESS: � ity State Zipl'�_c1� r.00ATiON OF PROBL,ENt,IF DIFFERENT: AcceSS FermissioK Gi'anlxd ❑ Call Firs7 (Would L�1ce To�e Pr�seut) � ����7 �� )w%� � �, �v1n��° - `��;y�� Cv �����.���.a� �� , - d� �.� .��-����>��� �� ���� �--��.� � ��-�. �� a,,k, o r�'�'� : f��� � � 3y�'� hJ!�� 'P y L �g� . G}.�„1�. fr cr Yo�t r�•'l'S 1 �,.�..ti �.. �l�w,.�, ��� Plat�name: �ot No: Block No: ather agez�cies iz�voll�ed: No �eld in��estigation rec}uired :��,� - ,.-- �-- -'"�-'�>i:�'' � � � �� � ) %a S T R Parcel No. ���� T�roll ���1�-� Th.Bros: New S Sasin �� Council District� Charge No. ,RESPONSE: Citizen noti�ed on by: �hone letter � in person DLSPUSITIOI�I, Turned to an / / by OR: No further action recommended beeause: Lead a.gency has bee��totified: Problem has been eorrectsd. No problem has been identifted. Prior iizvestigation addresses problem: SE�FtL�# _ _ Private problem -NDAP w'sll not consider because: Water originates onsite and/or on neighboring parcet, Location is outs'sde WL��Ii����Area. Other(Specify): DATE CLOSED: A/ 3� �� By: ' ���'��� ' ;,�, �=:NOV. 1. 2005�,11 08A�h.�.� '��:KING C0. W�RD::;-�: ���:`,�:���"�^�; ;:;��' ':;.;:�.�x.�.;'r;"�,�q.NO. 5898 -��;�.' 23/30;- '�� , � ��. h: ,�.� ����. .�� ��..-y�,�. t � •f. �'r�: .A ��:. Complaint No.:00-0700 Name:Anoaymous Yuvestigated by�Virgil Pacampara Aate:Oco�ber 17,2000 AETAll..S O�iNVFSTIGA'X'TON I went to the site on 10/17/00 at 10:00 AM tv investigate the anonymous complaiut regarding a private coutractor worki�g on retentfon drainage syste�ui and has a pond which�ovill bypassed pond wkuich � will cause sitt to entex Mads�aeek. ' I spoke with Nh_James Crawfard,ti�e lead foreman of"Badine Construction"who is dofng tlxe c�oastcuction Mr.Crawford toM iue that iheir ptoject is to catch nmof�from the hills�ide whic6 is flowing throug6 and entering Wonderlaad Estate.I was referred to Mr Bod�e,(owner of Bod.iwe constzuction) througlt telephono-and was able tu spoke with hizu briefly inforaung him the pvrpc�se o;f my visxt to dieir project site amd asked him if there is a permit issued on their project.He asked me if the�e is a p�obtem with regards to their project and told me also that th�re was no pemtit issuecl. � Ynvestigation shows that the projeot is about conoroll.ing and diveottmg ruriof�from the hi]Lside fronn flo�vring and entcring the Wonderland Esixte.'�ey laid a 6"diatneter perforated pVC pipe, built a treach and berm along the fvot hills to block/catch nu�off from the hxllside.Exeavated afld widen t�e existing pond W accommodate more water retention.I notiee that there was no fabz�e batrier and hays/straws at the projcct erea to con�ot the sxca'vated dirt fi'ora getting wash vut�.uring conshuction peo�od in the events vf rainfall.I suggested to Mr_Crawford to put t&e fabric barrier around the site_�e told me that he will put hays/straws and fabric bazrie�s to the areas where it is needed right away_Mr. Ciaarford also teld me that they have not detenmine where to tap the outle�T we�t-by to tb�e site on LOR3/00 and check the locatioa of t�e Madsen GYee1c, ' I notice the contraetor had laid the b�ays/straws on some bare areas and put a fabric at ti�e beXm areas where a possible erosion or wash out wiII occ�u_The Madsert creek is locatecl at eastside of the propexty approx.200 feet&om tb�e pond and 150�eet south eost of the pond.The silt have not reach the Madsen C�eek since the project site is at t1�e Iower shearn.The erosion/silt had reacb�ed the properties adjacent to the pro,ject Slte and it � 'sw�s beeu cleared already when,I went-6y. i Madsen Creek ���,,� � DNTS ' Sodiment po W_ � r"� � � . N �-- : � Run off ifrom the hill_ � 200'� P��g�oa 50' 6"PerE pipe/trench Toe j ( Birch rive 6" erf. . n (� uive/tren�n �ona � • � Mobile � _� i . 2'-3' Berm " , � . - Homes L�17 I Co�uC z . 6"PVC Tight Line, p8V ' Trench t i � n ��t � _ , Mobile Homes 1'ax1cing area ' • Oak Drive } � �--� n �- i , ipe crossing "'j Mobile Homes � Mobile 6"Perf pipe/trench � � HO�� Mobile Homes ' , � � . . � � � ___. . ..—I To�� : , NOV. 7. 2005 11 :08AM KING C0. WLRD N0. 5898 P. 24/30 �'—' • liING COUNTY W ATER AND LAND RESOURCES D�'V7SION � `C� '� DRAINAGE INVEST�GATION REPORT I // ' lNVESTIGATCON REQUBST Type ��S ' fROBLEM. �� IvgI] Y: Aate: OK'd b :���+ILE NO. 2�0 - Received&om: i � � (Day�— ' rLve) �� • ----- NAME: �xarr� oZ�/- J dZr� ADDRESS: �� � CCty StBtC__ Zip-��.t.C1.1C� LOCATJON OF PROBLEM,IF�IFFERGNT: / /ll��,/� 07 ��J Access Perrnission Grartted � Cal!�"u'st (Woald Lik�e To Be Presenc) ❑ ����s��-`""'�� . , . . . / �� ��� �.�.1.9�i��%/�,lJ l� � �`� � ` � . /�G?�2� GO .� ��-� � ���� �Q,� �� ���� ��?�` ��°��� ' � . � , � . ��� Qi� �iy;�?�i.c.oL�� G�� � , , `� . . . .. ,�� � � � � � . f � Plat name: ��� ����,Q,�/� t No: Block o: (�tl�cr ��encies z:��rol�•ed: No 2ieId in��estigarion required � � �,�, - — �' :r ,; ''%� � -- � .�'L�- ` � .�_ �t3�-3 p,s�'��.o . ' /a S 'f' Tt Parcel No. — Kroll �f/$ Tl�.Bros: New �Os,� S/„) �3 a..3 S Bas��� Counci�District� Charge No. �,BSPONSL': Citiz� notified on � ! 0 � by: �phone letter in persoz� (A,�� J� �n�lv� L,,�i,7 a.�-e._ , w�e.,. k�..v-e., e��� v�w� vu-� `� �'C(�c- c�,.,�-� o� l�Q. ��v6�-�---. . )LSPosrrtOH: Turned to on / / by OR No fuither action recommended beceuse: � Lead agency has been noti�ed:TQ,��,_jJ' /s.1� ���Z/� C Q P S � Problem ha's been conected. No problem has been identified. Prior investigation addresses problem: S��Fnc,E# _ _ Private probiem-NDAP will not consider because: Water o�iginates onsite snd/or on neigE�boring parcel. Od�er(Specify): ,JA�'E CLOS�D: b / /(� By: �� ' N4V. 1. 2005 11 :08AM KING C0. WLRD N0. 5$98 P. 25/30 "`--� KIIVG COIINI'Y VVATER AND LAND�ZESOURCES DIVISION , , � DRAZIVAGE INYESZY�'ION REPORT � �f �INVE,S'I7GATION IZEQCJ�ST Ty�e �G� � pKOBLEM:,��fiV�or f( 1 (dOG�ti �'j � RECEtv]eD Y: �� a vt ��- Date: 1 o Z OK'd b FILE NO z��� -�� Receiv�d&om: � �( r �(llaY) �l�?y� (Eve) L�� NAt�: Q� 7����I���� I PHorrE �l ����� . AnpREss: Z� M�1� f�✓ S City v v�. State_�J� Zip LOCATION OF PROBLPlvi, CF D1�rFEREN7': �4��j RQy`'�vv. /(,�a�J��-4 VA �le� �1� Access Permirsion ('rratrted ❑ Call Ffrst (would Like To Be 1Present) ❑ �a�� �f'iru i � F�r�vc�S v�o+a �o-r�r iti(a�s�� G�.e��L 1�aG;��:.� C�ta c�►�.e `„ Ka s � v1v� �i,,�:e "t�" �i-e��.e . W�'s '�� Il�Tdw i�' � cG,�,�v ��5 ��5 t� hQl��w . . . (���S7�r,,,� ���i,{� ' /�'�a���t� �.ec� ��-i•i'u� � u�ra { . ` � � Plat name: lv�t,L¢ T.ot No: ���y. Block No: �//� Qther cies involved: � No�fie2d investi ation uired • . ' • ' 4�r� ,.i ' Ii4Mr ' • ♦.rr �• � - • _ � r`^.�A�Gi�_��TED�;B�':�l�X�i�,'���,'�i[�'��'�'�'��,...:,w,.�.:,,,.�., � :;: _ - - 8 .�.K,^.:r.^:u,,;;:~::��;� ,�;;'„': -- , tv �. 2_ 3 �. 7•� �.. �_� 1/ S T R kazeel No. TCroll 1 S�J ThBros: New 1�.�� H . RI�P Basin��c,v Counci�District 9 Charge No. � !�'S'PONSE: Cit�zen notified on � Z � � � by: �hone letter in person a��Ca�S' `�o Ilvv�. c�Le^�.�.� 1��5 �� �rtau 1 .ta�irw.Qu� �o7.�c�i o �v�t� (il��-.,� v� (a�-� �.v.L t ��lJ cJ U. C.Lea u r..z { { r 1 b��'+ �.�4. S C` .t S ��do�e O . t'j,,,_� w D c�.��,�.,,,a � c(�?C�„r � ��5�«�,.-, 1i,. C�-,aw+n�� (leC�•�SQ W�Fe✓ Ltll N.� a fPr��..� a,.,� �r.o �...o �stes,a. �a.t�-� �ccPSs _ nllS�osrrrnN: 'hu�tted to on / / by OR: No;further action reoommended bec�use: � T�ead agenc�y has beea notified: Problem has been corrected. No problem hes been identified. ��ior investigation addres,ses problem: SF.E�FQ.E# � Private problem-TTAAP v►viil not consitder because: Water originates onsite and/or on neigl�bori�ng paresl. - Other(Specify); �ATE CLOSEA: 1 /2�S / a 2 By: �t (C_ ( , r �V'1t!� � 54�..Q 1�k7 �vrd���z� ���Ca 15 I,a��� YnJ.�I - • � ���- ' � NOV, 1. 20Q5 11 : 08AM K(NG C0. WLRD N0. 5898 P. 26/30 _�vc L�__._ _ .. ..rER,AND LAND RESOURCES DIVLSI�r .....�� �� DRAYN'A.�E IN�ESTrGATION �PORT • irrvEs~riclarroN REQUEST Type -�� PRos�: 1�/h,���n��vi ECEIVED BY: �. D �: �. o��d . ��E No. Zoo2 � �s Received from: - � � (��) �� (Eve) �_.2 � NAME: V PHONE OR.7I " .I��-a- Avnt�ss: �C t� State Zip LOCATION OF PROBL�M,IF DI�F�REMT: �f �/�'1 � ��� .�lccesr Permissiori Grarzted ❑ Call F'irst (vVould Ltke To Be Preseat) ❑ GZ,P�/�-' ���G�iZ� Q�%�'� ,��� ��'b�'�'� '�" . . . . �►��r�C . ��� _ w��� ��� ��M . ��- �� � � . ��� � Plat name: Lot No: �lock No: Ofiher a encies invoived: No field inves ' ation r uired ��' .^�'"$ .": ��'�;•..,������t.`�,� � _���sr."° �� "':; :. . • - . , .. .. - -�� � -�_ -- . i/a S T n Parcel No.���r��i'�e'L� Kroll`��� Th.Bros: l�ew 4�ic� [ZDP� Basin�„� Council Distr,iot_..�,_ Charge No. RLrspoxs�s:• Citizem notified on �l�0� by: _�phonc letter ia porson � ��y..—. W.e co-H..�dZ �,...� .�o �-i�..`e o� u,o►-•-..���s.�... � Y� 1�►� v�A A /8S/� � �l�w.�u v- � �Lf.�.� �i-u�c�G � � ��� ���/t's'� !h,' Q�--� �1/�t-^w.��o+�'� - 1Lt DxslPosrrroN: Turned to on / /. by . OR No f�ut]acr action recommended because: � �.ead agency has been notified: ,� �roblern has been cerrected. ,�No problem has been identified. Prior in�vestigation addresses problem: SEr Fn,,e# _ Private problem�NDAP�cvill uot considet'because: Water origiu�ates onsite and/or on neighbor�ng parcel. Oth�er(Spccify): �ATE CLOSED: �� / (Z /OZ gy. 1� NOV. 7. 2005 11 :08AM KING C0. WLRO . N0. 5898 P. 2]/30 ��� KING�OYJN'I'1'VVATER A,ND�'��ANn RESOURCES DIVLSION --•—� . DRAiNAGE YNVESTIGATION R�PORT � I1VVP.STIQATION YtEQUEST TyPe _�S `'ROBLEM: .���p���!�g � �CEIVEU BY: �L,�(l f�Z6�/)y _ Date: OK'd by: F�No. 20�Q� - �l Received frozn: � � • � + /sa.�5/��f�i�� �pay� ZS (E�e? �� � NAn�: Pxorrs 2Ss- ti �fq� A�oRESs' � SG � o ity--�',d.�. State Zip OS't� � Q�y----� I.00A1'XON OF PROBLFM,[P p�FERfiNf:r�A���P.�v�'��-��--i f��i���l��(a G(f� Acces�Pernrrssion Granted ❑ Call Fitst (would L�7ce To Be Present) � �ko��xC.(���-�J �.G�-��� �� '� e��.e ' � ov.�►- p�,ce �/•� p��C4 �rn,� . q �� ��(„�„„ �- ��C, �"'.,2 � �,. ✓l � , � � � ' / ���a �`Zf y �S �� �� /��� �� � ��'�� �� y� '�° � : � � �'�'� � how -M� .� � �Es-�nA f' �/�/y�,r�x - �i'.�c.a 7�z '�,,,:� .frl'arv�a, � a�e,/�.,•�� ;� /'�. /a�%1�i`* "�n:z ���.w��I e�.���rk� � !�+ G��+•n,- �:!r ��.r� Plat name: L,ot No: �tock I�Fo: Other encies inrrolv�d: N'o f�eld investi ation re uired ":N:�- YW.• JY�' �'A rL�y�ir �^Tkl1. +rwiw'�.M�.» ... ,✓���w �������w���'4�wi-����iK�i i���rv �� r �/a S T R Pazcel No. Kroll�.? Th.Bxos: New 5� RDP Basin�� Council District c GSity Charge No. � RBspolvsB: Cetizen notified ou ! a7 a y �� 7' by; � phone lotter in person �7//`S� , rv�arr�ed✓ /��ur:t /�e�Gs 7" ' V� �G�f��'► 1'°ti' r"'io`" `" ' . oC l� DIBPosrr�oN: Turned to on / / by OR No furfi�er actio�n xecommended because: ✓ Lead a�ency has been notified:�+•�' J� '�•l � �' � �3��0206 Problemo��as been corrected. No prob�em has been identified. prior irrvestigation addresses problem: SEE�'ILE# Pri�vate pmblem-NDAP will not eonsider because: � 'Watcr originates onsite and/or on neighboring parcel, Othe�(Specify): )A�CL�SED: / ! ��/ �'�° By: ' / 11 1• � 1 1 1 i' � � . � �Ns _ ; , rr .: _ . �. ... . � '�.�� � •..��k �_� • `y � -� ''F,���, � • y. . .�� � � .`••}�� `'�'o'�rFti�� 1 �•J�' . h?'•.1 `� �� •,• `-r'•, . .� 1`�'—'-�.,.� � A�� � � ` .i � . �, �• � �. �' •� . �' .N� ;1� • � i. y� r ���� -, ��'s• � •.y •-� ,.�' �• �r ' '•*' r� . ,u%' "^ ,.'�"�°'� �'h.�� 1�..r ,.. �'�7��j' � .t. , .r�'y`. • � ♦ r' � J. �' . �1 �t , � f�� (M° ����T� Y .�' � .•` '`�.y�S�r��� .- `�1 � �. .��?... .� _F�� � '�I' � � ' � •� 'Y��'S �'('• ',' �`Z .� '�}�� �' 1 �•� " 1� b � . . 1��� - � �.fT� , i. 1 •� • ' T-:�Ta •• � . � �� Y �..�lL'�. 'il�r� �w ��� 1, ��s', - .! � �y' S � ' . �1y�� . ���.• 1 '''� d�, '•��:. 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I�RAINAGE I�STIGATION�REPORT' � - , . . � � � � n�iv�s�oA�ox R�Qinesr � - � Typ� � PRoar.��: ��+��0'��b. . � . . �- '� ; R�c;�[v�n sY: .�L � Dat+�• �l7�OS p�{�d�,. •� �No� Z���� "��7�� : • : Received#�roxn: ����E FS.�( �(tq6-0306�-C'ou�cicr�Mav /y(,gg��ypNa.'s dFF't�' � � . . - � ' (DaY) �1� � (Eve) 7 . ? N���__ c�A CK� ��l�I�D�iJ Pxo�re �$� r�/� . . ADU�ESS:�� �'s - ��R1�'D.0 - �?�P� 1�i4 UEY �Ci`�y Y St�te ZiP�����!�J �,OC�ITION OF PIZOBL�M,IF DIFP$RENT: ' � . . Access Pe�m�ssion Granted ❑ CaI!First (Wou#d L�1ce To Be Present) � . ' .�A-CK ��Io� �s -�AN�G�R �F �ou�cAti.� �S�rES NI�B/�� �,vrE �A�K. - ����VqGE Dd�`Cl� rs o�'E'!�F"Cowe,t�6 _ L'�'�vti0�` �R,E"d��� gE'c�usE oF Ac�lo�V cn�UC��iVS'_? fill/lA� G��� �E �D�vE � S - � �d u r1.��' L��I�V� �sy �� �G C'ou�uGc��� ��?�10�V� t ��F�C� (ZqG�o3v6> , wt�� ���v�i�v6S. • . � � . �I�� ���Y � �� .. �I��e= � Lot No: Bloc�c No; )�he�a encies ixxvalved: . � No field investi 'on re ' ed - r •:.i,� �~ ���-� ` �"�'"' :a`�'�; ;e�.�!'�:� �_ � � %a S T R 2'an;��No.��y��� �07� Kroll���Q� Th„�3ros: I�l�erw �� DP Basi���_ Councii bistrict�� - City � � Chazge Af�. . �BSPONs.�: Citi�n notificd on by; phoae � letter in person . � , � � � � � F1L� `�d;�� . . � . � . . . : �SIz'�ON: Turned to on /� /• by � OR No ftuther action recoxnmeuded hecanse: _ Y.ead agen�y b.as been notified: � � _ Problem has been corrected. No problem has besn ide,ntif�ied, Pr�or investigation addresses proble�: S��`u,E# _ private probtotn.-NDAA wiIl not coasidez because: � . . W ater originat�es onsite and/or on neighboring parcel. , � ��'(�1P��Y)� - �CLOSEA: � / B�,: . . . . ' 4.0 FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN � 4.0 FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN A. Existing Site Hydrology The existing site consists of pastureland with a scattering of trees, mostly along the southern properiy line of the site. Madsen Creek forms the project site's east, north, and south boundaries with the overflow bypass fonning the project site's western boundary. However, foi- ptn-�oses of sizin� the dete�ltio�l for this project site the entire site was assumed to be forested, which meets the requirements of the 2005 King County Surface Water Design Manual. The existing site slopes at a fairly constant rate for the most part in a northerly direction towards the downstream end of Madsen Creek. B. Developed Site Hydrology Under developed conditions there will be 2.44 acres of impervious and 1.85 acres of till grass contributing to the detention pond proposed for this development for a total of 4.29 acres of development. The proposa] for this project is to construction a large parking lot with an associated soccer field and one small building. There will also be a track running around the total development on this ���est side of Madsen Creek. The project site is longer in a north-south direction than the east-west direction as will be the pond with this development. The proposed ��et/detention pond is tocated in the northwest corner of the site and will discharge to Madsen Creek via pipe system. A small rockery less than 4 feet tall will be constructed along the southwest corner of this site to meet site grades since the soccer field has to be level. C. Performance Standards �.evel 3 Flow Cont�-ol and Basic Water Quality are the flow control and water quality standards instituted for this project. In addition, the conveyance system capaciry standard «�ill be to utilize the Rational Niethod as developed by the 1990 King County Surface Vdater Design Manual and still approved by the 2005 King County Surface Water Design Manual. D. Flow Control System Please refer to the illush-ative sl<etch on the following }�ages of this report for the flow control system modifications proposed for this development. E. Water Quality System � Please refer to the illustrative sketch on the following quality system proposed for this development locate ���r} �S �r I storage in the pond proposed for this development. � Na.w p ��� r So � Ct� �it f � t Pt���T�,. 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M'��� ' { IFlO1m fAOY 1NE 9R 9J/l E 1�N6PGtRD 19naI 1m vR �f.11G�I[[i Y IIOIT � J 1 '.",.' / ,• � �, / �'4i�ih � � w a srm¢o�oumx wwMe ru wmws. u id,miiw n w�im� x �a aw = � I�. t / � � rt rrw noaT utv.w rw�w s� s is a wr. � � �f / % ' `�.,j � � , � � � � � `- re�as� ro rr.a�ua nrv .wnwrs n n u uu l�b � � r/ I ' r a . � ` � � �:wwo s no�a°iiY��` R io^�`mrm r.c i°� b, � �� �1 (� ��`� � - ' rn r`:..eo'7n.t.:�� / '.4• '' \�� �a`\� OI�L6MI! rs ic�taulan wr u 4n 8 .cor J J � I(II ��`�J Y'�'v � � r� � C� __-� � _.�� FXIS7INI:f/A7lIR�S IEGFM) � (I � I; ,,.'.� /z�.�i.ro I �,:�i�.: \ ...\\.`' � - � ii xo m6 e�a'nr°�r a�ia�aces�i�c�r°n�ixomrrc'rt � � �A��t �� I I I r \` _ �'� .J �- / I \T �4RZ�I�J._d�.!'EFTICM,CO4TRUL � � II i� `� � I ,.'� �y 1``�� vi tpia��rtr�nsr,�M.�u+�ar�u�rai tr rusa: a � �I j WATER QUALITY CALCULATIONS � SIZE THE BASIC WET POND V� = 3�A;(0.9)+A,�(0.25)�(0.039)(43,560) V,, = 3�(2.44)(0.9)+(1.85)(0.25)](0.039)(43,560) V,, = 13,549 CF � � 1 170G 031.doc � LEVEL 3 FLOW CONTROL CALCULATIONS Performed on April 20, 2009 Our Job No. 11706 � itCR'lS Commd�u �� CREATE a new Time Series Producticn of RunofF Time Series Project Location : Sea-Tac i Computing Series : 11706wpre . tsf Regional Scale Factor : 1 .00 Data Type : Reduced , Creating Hourly Time Series Fil�� Loading Tim� Series Fi1c:C: `•,KC_S?��i.7P��I\I�,,_DATA'�•.STTF60R.rnF . Till Forest 4.29 acres Total Area : 4 .29 acres Peak Discl�arge: 0 .346 CFS at 9: G� c,r; �an ° ir_ 1'��a_� ':: ' Storing i'in ,�: : : . :; _ : � ,:�: , �- ;- . Time Series Compute� KCRTS Commana ------------- - �� . ,�- - - - �- Compute PEAKS and Flow Freque.,: i. � ---------------------- �low Frequer_cy P.r_alysi� --------------------- Time Series File: 11706wpre. t� Project Location:Sea-Tac Fr� Analysis Tools Command ---------------------- RETURN to Previous Menu ----------------------- KCR'I'S Command CREATE a new Time Series ------------------------ Production of Runoff Time Series Project Location : Sea-Tac Computing Series : 11706wdev.tsf Regional Scale Factor : 1.00 Data Type : Reduced Creating Hourly Time Series File Loading Time Series I'ile:C: \KC_SWDM\KC_DATA\STTG60R.rnf . Till Grass 1 . 85 acres Loading Time Series File:C: \KC_SWDM\KC_DATA\STE160R.rnf . Impervious 2 .44 acres Total Area : 4.29 acres Peak Discharge: 1 .54 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File:11706wdev.tsf . Time Series Computed KCRTS Command Enter the Analysis TOOLS Module ------------------------------- Analysis Tools Command ---------------------- Compute PEAKS and Flow Frequencies ---------------------------------- Loading Stage/Discharge curve:11706wdev.tsf . Flow Frequency Analysis -------------------------------------------------------- Time Series File:11706wdev. tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:11706wdev.pks . Analysis Tools Command ---------------------- Compute Flow DURATION and Exceedence ------------------------------------ � Loading Time Series File:11706wpre. tsf . Computing Flow Durations Durations & Exceedence Probabilities to Fi1e:11706wtarget.dur . Analysis Tools Command ---------------------- RETURN to Previous Menu ----------------------- KCRTS Command Size a Retention/Detention FACILITY ----------------------------------- Edit Facility Loading Time Series File:11706wdev. tsf . Time Series Found in Memory:11706wdev. tsf . Saving Retention/Detention Facility File:11706w1v13 .rdf . Starting Documentation File:C: \kc_swdm\kc_data\example\kcrts\11706w1v13 .doc . Time Seri.�s I�ound in Memory:11706wdev. tsf . EdiL Complete Retention/Detenti.on T'acility Design ----------------------------------- Saving Retention/Detention Facility File:11706w1v13 . rdf . Starting Documen�ation File:C:\kc_swdm\kc_data\example\kcrts\11706w1v13 .doc . Time Series Found in Memory:11706wdev. tsf . ' Flow F'requency i:nal;sis Time Series File:11706wpre. Csf Project Location:Sea-Tac ---Annual Peak Flow Rates--- -----Flow N'requency Analysis------- Flow Rate Rank Time of Peak - - Peaks - - Rank Return Prcb (CFS) (CFS) Period 0 .270 2 2/09/01 18:00 0.346 1 100.00 0 . °90 0 . 074 7 1/06/02 3:00 0.270 2 25.00 0.960 0 .200 4 2/28/a3 3:00 0.208 3 10. 00 0 .900 0 . 007 8 3/24/04 20: 00 0.200 4 5. 00 0.80G 0 . 119 6 1/05/05 8: 00 0.175 5 3. 00 0. 667 0.208 3 1/18/06 21: 00 0.119 6 2. 00 0.50C 0.175 5 11/24/06 4: 00 0.074 7 1.30 0.231 0 . 34E 1 1/09/08 9 : 00 0 . 007 8 1 . 10 0 . 0°7 ' H'low r'requency Ana].,✓sis Time Series File:11706wdev. �sf Project Location:Sea-Tac ---Annual Peak Flow Rates--- -----Flow Frequency Analysis----- Flow Rate Rank Time of Peak - - Peaks - - Rank Return Frob (CFS) (CFS) Period 0.757 6 2/09/01 2:00 1 .55 1 100.00 Q .990 0.605 8 1/05/02 16:00 0.933 2 25 .00 0.960 0.912 3 2/27/03 7 :00 0.912 3 10. 00 0.900 0.642 7 8/2b/04 2 :00 0 .802 4 5. 00 0. 800 0.776 5 10/28/04 16:00 0 .776 5 3 .00 0. 667 0.802 4 1/18/06 16:00 0 .757 6 2 .00 0.500 0.933 2 10/26/06 0:00 0. 642 7 1 .30 0.23] ] . 55 1 1 /09/08 6: 00 0. 605 8 1 .10 0. 09� ( � F'low Frequency N.r�a1ysis Time Series File:11706wrdout . tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- -----Flow Frequency Analysis------ Flow Rate Rank Time of Peak - - Peaks - - Rank Return 1=�rob (CFS) (CFS) (ft) Period 0 .228 2 2/09/01 21:00 0. 325 3 . 51 1 100.00 D . ?9J 0 .055 7 1/07/02 4:00 0.228 3 .29 2 25 . 00 0 .960 0 .182 3 3/06/03 22:00 0. 182 2 .95 3 10.Od 0.900 0.045 8 8/26/04 8: 00 0. 17i 2 . 84 4 5 . 00 0 . 80G 0.058 6 1/08/05 5: 00 0.110 2 .40 5 3 . 00 0 . 667 0.110 5 1/19/06 2:00 0.058 2.18 6 2 . 00 0 .50C 0 .171 4 11/24/06 9:00 0. 055 1.98 7 1 . 30 0.231 0 .325 1 1/09/08 12 :00 0 . 045 1.29 8 1 . 10 0.097 ;'c_-�pt:ted P��aks � . 29� ? . �0 5� . ^� 0 . 9�O Retention/Detention Pacilily Type of Facility: Detention Pond Side Slope: 2 . 00 H:1V Pond Bottom Length: 280. 00 ft Pond Bottom Width: 47 . 00 ft Pond Bottom Area: 13160. sq. ft Top Area at 1 ft. FB: 19370. sq. ft 0 .445 acres Effective Storage Depth: 3 . 50 ft Stage 0 Elevation: 99 .50 ft Storage Volume: 54300. cu. ft 1 .247 ac-ft Riser Head: 3 . 50 ft Riser Diameter: 18. 00 inches Number of orifices: 2 Full Head Pipe Orifice # Height Diameter Discharge Diameter (ft) (in) {CFS? {in) 1 0.00 1 .20 0.073 2 2 .25 2 .25 0. 153 6 .0 Top Notch Weir: Rectangular Length: 1 . 50 in Weir Height: 3 . 15 ft. Outflow Rating Curve: None Stage Elevation Storage Discharge Percolation Surf Area (ft) (ft) (cu. ft) (ac-Lt) (cfs) (cfs) (sq. ft) 0 . 00 99 . 50 0. 0.000 0 . 000 0.00 13160 . 0 . 01 99 .51 132 . 0. 003 0. 004 0.00 13173 . 0 . 03 99 .53 395. 0. 009 0 .006 0.00 13199. 0 . 04 99 .54 527 . 0 .012 0 .008 0.00 13212 . 0 . 05 99 .55 660. 0 .015 0.009 0.00 13225. 0 . 06 99 .56 792 . 0. 018 0.010 0.00 13239. 0 . 08 99 . 58 1057 . 0. 024 0 .011 0.00 13265. 0 . 09 99 .59 1190. 0 .�27 0 .012 0.00 13278 . 0 . 10 99 . 60 1323. 0 .030 0.012 0.00 13291 . 0 .20 99 .70 2658 . 0.061 0.017 0.00 13422 . G . 30 99 .80 4007 . 0.092 0.021 0.00 13554 . G . 40 99 . 90 5369. 0.123 0. 025 0.00 13686 . 0 . 50 100 . 00 6744. 0.155 0.028 0. 00 13818 . 0 . 60 100 .10 8133. Q.187 0.030 0. 00 13951 . 0 . 70 100.20 9534. 0.219 0. 033 0.00 1408? . L` . 80 100. 30 10949. 0.251 0. 035 0.00 14217 . J . 90 100.40 12378. 0.284 0.037 O .OQ 14350 . 1 . 00 100.50 13819. 0.317 0.�39 O.OQ 14484 . 1 . 10 100. 60 15274. 0.351 0.�41 0.00 14618 . = .20 100.70 16743 . 0. 384 0.043 0 .00 14753 . � . 30 100. 80 18225. 0.418 0 .045 0.00 1488� . ', � .40 100.90 19720. 0 .453 0.046 0.00 15023 . ' . �0 � 07 . 00 ?� ??n . 0 . ^8'7 0 . 0�1� Q . 00 � 515� ' 1. 60 101 .10 22%52. 0. 522 0 . 049 0 .00 15294 . 1.70 101 .20 24288. �.558 0.051 0.00 1543u . 1. 80 101.30 25838. �.593 0.052 0.0� 15566 . 1.90 101 .40 27402 . �. 629 0 .054 0.00 15703 . 2 . 00 101 . 50 28979. 0. 665 0 . 055 0. �0 15840 . 2 . 10 101 . 60 30570. Q.707 0 . 057 0. 00 15977 . 2 . 20 101 .70 32174. 0.739 0. 058 0. 60 16115 . 2 .25 101 .75 32982 . 0.757 0.059 0.00 16184 . 2 .27 101.77 33306. 0.765 0.060 0.00 16212 . 2 . 30 101.80 33793. 0.776 0 .064 0.00 16253 . 2 . 32 101.82 34118. 0.783 0 .071 0.00 16281 . 2 .34 101 .84 34444. 0.791 0 .080 0.00 16308 . 2 .37 101.87 34934. 0. 802 0 .092 0.00 16350 . 2 .39 101 .89 35261. 0 .809 0 .106 0.00 16378 . 2.41 101.91 35589. 0.817 0.116 0.00 16405 . 2 .44 101 .94 36082 . 0 . 828 0.120 0.00 16447 . 2 . 54 102 .04 37733. 0. 866 0.136 0.00 16586 . 2 . 64 1Q2 . 14 39399. 0. 904 0.149 0.00 16725 . 2.74 102 .24 41078. 0.943 0 .161 a .00 16864 . 2.84 102 .34 42771. 0.982 0.171 0.00 17009 . 2 .94 102 .44 44479. 1 .021 0 .181 0.00 17144 . 3. 04 102 .54 462�0. 1. 061 0.190 0.00 17284 . 3. 14 102 . 64 47936. 1 .100 0.199 0.00 17425 . 3 . 15 102 .65 48110. 1 .104 0.200 0.00 17439 . 3. 19 102 .69 48809. 1 . 120 0 .207 0.00 17995 . 3 .24 102 .74 49685. 1 .141 0 .216 0.00 17566 . 3 .28 102 .78 50389. 1 . 157 0 .226 0.00 17622 . 3 . 33 102 .83 51272. 1 .177 0.235 0.00 17693 . 3 .37 102 .87 51981. 1 . 193 0 .244 0.00 17750 . 3 .41 102 .91 52692 . ? .210 0 .254 0.00 17806 . 3 .46 102 .96 53584. _ .?,30 0.265 0. 00 17877 . 3 . 50 103 .00 54300. i .247 0.278 0. 00 17939 . 3 . 60 103 .10 56101. i .288 0.747 0. 00 18076. 3 .70 103 .20 57915. 1 . 330 1. 600 0.00 18219 . 3 . 80 103 . 30 59744. 1 . 372 2 .700 0.00 18361 . 3 . 90 103 .40 61588. 1 .414 4.000 0.00 18505 . 4. 00 103 . 50 63445. 1 .457 5.480 0.00 18648 . 4. 10 103 .60 65317. 1 .499 6.910 0.00 18792 . 9.20 103 .70 67204. 1 . 543 7 .440 0.00 18936. 4.30 103 .80 69105. 1 .586 7 .940 0.00 19080. 4.40 103 .90 71020. 1 . 630 8. 410 0.00 19225 . 4. 50 104.00 72950. 1 . 675 8.850 0.00 19370 . 4. 60 104.10 74894. 1 .719 9 .270 0.00 19515 . 4.70 104.20 76853. 1 .764 9 . 670 0 .00 19661 . 4.80 104.30 78826. 1 . 810 10 . 060 O.QO 19807 . 4. 90 1�4 .40 80814. 1 .855 10 .430 0.00 19953 . 5. 00 104 . 50 82817 . 1 .901 10 .790 0.00 20100 . 5 . 10 104 . 60 84834. 1 . 948 11 .140 0.00 20247 . 5.20 104 .70 86866. 1 . 994 11 .470 0.00 2039�. 5. 30 104 .80 88913. 2 .041 11 .800 0.00 20542 . 5 .40 104 .90 90974 . 2 .088 12 .120 0.00 20690. 5 . 50 105 .00 93051. 2 .136 12 .420 0.00 20838 . Hyd Inflow Outflow Peak Storage ' Target Calc Stage Elev (Cu-Ft) (Ac-Ft) 1 1.55 0 .35 0. 33 3 . 51 103 .01 54482 . 1 .251 2 0.76 ******* 0.22 3 .24 102.74 49745. 1 .142 3 0 .91 ******* 0.18 2 .95 102 .45 44613 . 1.024 4 0 .76 ******* 0.17 2 . 84 102 .34 42737. 0.981 5 0 .80 ******* 0.11 2 .40 101 . 90 35380. 0.812 6 0.47 ******* O.d6 2 .18 101 .68 31920. 0.733 7 0.61 ******* 0.05 1.95 101.45 28201. �.647 8 Q.64 ******* 0.04 1.29 100.79 18Q08 . 0.413 ---------------------------------- Route Time Series through Facility Inflow Time Series Pi].e:11706wdev.tsf Outflow Time Ser.i.es File:11706wr.dout Inflow/Outflow Analysis Peak Inflow Discharge: 1. 55 CFS at 6 : 00 on Jan 9 in Year 8 Peak Outflow Discharge: 0.325 CFS at 12 : 00 on Jan 9 in Year 8 Peak Reservoir Stage: 3 .51 Ft Peak Reservoir Elev: 103 .01 Ft Peak Reservoir Storaae: 54482 . Cu-Ft . 1 .251 Ac-Ft Flow Frequency Analysis `�'ime Series File:11706wrdout. tsf Project Location:Sea-Tac --Annual Peak Flow Rates--- -----Flow Frequency Analysis------- I�=ow Rate Rank Time of Peak - - Peaks - - Rank Return Prob iCFS) (CFS) (ft) Period 0 . 228 2 2/09/01 21 :00 0. 325 3 .51 1 100. 00 0.990 0 . 055 7 1/07/02 4 :00 0.228 3 .29 2 25. 00 0.960 0 . 182 3 3/06/03 22 : 00 0 .182 2 .95 3 10.00 0. 900 0 .045 8 8/26/04 8 : 00 0.171 2 .84 4 5 . 00 0.8G0 0 . 058 6 1/08/05 5: 00 0.110 2 .40 5 3 . 0� 0. 6E� 0 .11� 5 1/19/06 2 : 00 O. d58 2 . 18 6 2 . 00 0. 5C0 0.177_ 4 11/24/06 9: 00 0. 055 1 . 98 7 1. 30 0.2j"i 0 .325 1 1/09/08 12 :00 0. 095 1. 29 8 1. 10 0 .091 Co�nputed Peaks 0. 293 3 .50 �' . �'�� Flow Duration from Time Series File:1i706wrdout. tsf iutoff Count Frequency CDF Exceedence_Probu:_ . _ _ CFS � � � 0. 003 30356 49 . 504 49 .504 50.496 0. 505E+pC� 0. 010 5690 9 .279 58 .783 41 .217 0.412E+OC� 0 .016 b414 10 .460 69.243 30.757 0. 308E+00 0 .022 4775 7 .787 77 .030 22 . 970 0 .230E+00 0 .029 4168 6 .797 83 .827 16 .173 0 .162E+OC� 0 . 035 3918 6 .389 90.217 9 .783 0 .978E-�" � 0 .042 2029 3 .309 93 .526 6 .474 0 . 647E ' 0 .048 1546 2 .521 96.047 3 . 953 0.395E- 0 .054 1339 2 .184 98.231 i .769 0.177E 0 . 061 700 1 .142 99 .372 0.628 0. 628F 0 . 067 53 0 .086 99 .459 0 . 541. 0. 541F , 0 . 0'%3 27 0 .044 99 .5a3 0 .497 0 .497E-02 0.080 23 0. 038 99.540 0.460 0.460E-02 0.086 28 0.046 99 .586 0.414 0.414E-02 0.093 23 0.038 99 .623 0.377 0. 377E-02 0.099 12 0.020 99 .643 0.357 0. 357E-02 0 .105 11 0.018 99 . 661 0.339 0. 339E-02 0 .112 12 0.020 99 . 680 0.320 0. 320E-02 0 .118 23 0.038 99 .718 0.282 0.282E-02 0 .125 23 0.038 99 .755 0.245 0 .245E-02 0.131 18 0.029 99 .785 0.215 0 .215E-02 0.137 13 0.021 99 .806 0.194 0 .194E-02 0.144 10 0.016 99 .822 0 .178 0 .178E-02 0.150 12 0.020 99 .842 0 .158 0 .158E-02 0.156 13 0.021 99 .863 0 .137 0.137E-02 0.163 10 0.016 99 .879 0 .121 0.121E-02 0 .169 16 0.026 99 .905 0.095 0.946E-03 0 .176 13 0.021 99 .97.7 0. 073 0.734E-03 0 .182 11 0.018 99 .945 0.055 0.554E-03 0 .188 8 0.013 99 .958 0. 042 0.�24E-03 0 .195 1U 0.016 99 .974 0.026 0.261L-0? 0.'1..07. 5 O. OU8 99.982. �.018 0.1797;-0�. 0.?.08 1 0.002 99 .984 0.016 0.163E-0� 0.214 3 0.005 99 .989 0.011 0. 114E-0? ' 0 .220 2 0.003 99 .992 0.008 0. 815E-0� 0 .227 3 0.005 99 .997 0.003 0.326E-0� ---------------------------------- Route Time Series through Facility Inflow Time Series File:11706wdev.tsf Outflow Time Series File:11706wrdout Inflow/Outflow Analysis Peak Inflow Discharge: 1.55 CFS at 6 :00 on Jan 9 in Year 8 Peak Outflow Discharge: 0.325 CFS at 12 :fl0 on Jan 9 in Year 8 Peak Reservoir Stage: 3 .51 Ft Peak Reservoir Elev: 103 .01 Ft Peak Reservoir Storage: 54482 . Cu-Ft . 1.251 Ac-Ft Flow Frequency Analysis Time Series File:11706wrdout.tsf Project Location:Sea-Tac ---Annual Peak Flow Kates--- -----I�].ow ]�requency Analysis------- I'low Rate Rank Time of Peak - - Peaks - - Rank Return Prob (CL'S) SCFS) {ft) Period 0 .228 2 2/09/01 21 :00 0. 325 3 .51 1 100. 00 0 .990 0 .055 7 1/07/02 4 :00 0. 228 3 .29 2 25. 00 0 .96� 0 .182 3 3/06/03 22 :00 0. 182 2 . 95 3 10. 00 0 .900 0.045 8 8/26/04 8:00 0. 171 2 .84 4 5 . 00 0.800 0.058 6 1/08/05 5:00 0. 110 2 .40 5 3 . 00 0.667 0.110 5 1/19/06 2 :00 0. 058 2 .18 6 2 . 00 0.500 0 .171 4 11/24/06 9 :00 0. 055 1.98 7 1 .30 0.231 0 .325 1 1/�9/08 12 :00 0. 045 1 .29 8 1 .10 0. 091 Computed Peaks 0.293 3 . 50 50 . 00 0 .980 Flow Duration from Time Series File:117�6wrdout.tsf Cutoff Count Frequency CDF Exceedence_Probability CFS � � � 0 .003 30356 49. 504 49 .504 50.496 0 .505E+00 0 .010 5690 9 .279 58 .783 41.217 0 .412E+00 0 .016 6414 10 .460 69 .243 30.757 0.308E+00 0 .022 4775 7 .787 77 .030 22 .970 0.230E+00 0 .029 4168 6 .797 83 .827 16.173 0.162E+C0 0 .035 3918 6.389 90 .217 9 .783 0. 978E-;'1 0.042 2029 3 .309 93 .526 6.474 0.647E-C1 0 .048 1546 2 .521 96 .047 3 .953 0 .395E-�1 0 .054 1339 2.184 98 .231 1 .769 0.177E-C] 0 .061 700 1 .142 99 .372 0 . 628 0. 628E-G� 0 .067 53 0.086 99 .459 0 . 541 0.541E-02 0 .073 27 0.044 99 .503 0 .497 0.497E-02 0 .080 23 0.038 99.540 0.460 0.460E-02 0.086 28 0.046 99.586 0.414 0.414E-0� 0.093 23 0.038 99.623 0. 377 0.377E-02 0 .099 12 0.02� 99 .643 0.357 0. 357E-02 0.105 11 0.018 99 .661 0.339 0.339E-02 0.112 12 0.02� 99 .680 0.320 0.320E-0� 0.118 23 0.038 99 .718 0 .282 0.282E-02 0.125 23 0. 038 99 .755 0 .245 0.245E-0� 0 .131 18 0. 029 99 .785 0 .215 0.215E-0� 0 .137 13 0. 021 99 .806 0 . 194 0. 7.94E-02 0 .144 �0 0. 016 99 .822 0.178 0. 178E-02 0 .150 ].2. 0.020 99 .842 0.158 0. 158�-02 0 .156 13 0.021 99 .863 0 .137 0.137E-02 0 .163 10 0. 016 49 .879 0 . 121 0.121E-02 0 .169 16 0. 026 99 .905 0 . 095 0.946E-03 0.176 13 0. 021 99.927 0 . 073 0.734E-03 0 .182 11 0. 018 99 .945 0. 055 0. 554E-03 0 .188 8 0.013 99 .958 0.042 0.424E-03 0 .195 10 0.016 99 .974 0.026 0.261E-03 0 .201 5 0 .008 99 .982 0.018 0. 179E-03 0 .208 1 0 .002 99 .984 0 .016 0 .163�-03 0 .214 3 0 .005 99 .989 0 .011 0 .114E-03 0 .220 2 0 .003 99 .992 0 .008 0 . 815E-04 0 .227 3 0.005 99 .997 0 .003 0 . 326E-04 ---------------------------------- Route Time Series through Facility Inflow Time Series File:11706wdev.tsf Outflow Time Series File:11706wrdout Inflow/Outflow Analysis Peak Inflow Discharge: 1 .55 CFS at 6:00 on Jan 9 in Year 8 Peak Outflow Discharge: 0.325 CI'S at 12 :00 on Jan 9 in Year 8 Peak Reservoir Stage: 3 . 51. Ft Peak Reservoir Elev: 103 . 01 I't Peak Reservoir Storage: 54482 . Cu-Ft . 1 .251 Ac-Ft ' Flow Frequency Analysis Time Series File:11706wrdout.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- -----Flow Frequency Analysis------- Flow Rate Rank Time of Peak - - Peaks - - Rank Return Prob {CFS) (CFS) (ft) Period 0 .228 2 2/09/01 21:00 0.325 3 . 51 1 100. 00 0.990 0 .055 7 1/07/02 4: 00 0.228 3 .29 2 25. �0 0.960 0.182 3 3/06/03 22 : Oa 0.182 2 . 95 3 10. �0 0.900 0 .045 8 8/26/04 8:0� 0.171 2 . 84 4 5.06 0.800 0 .058 6 1/08/05 5:00 0.110 2 . 40 5 3 .OQ 0.667 0 .110 5 1/19/06 2 :00 0.058 2 .18 6 2 . 00 0.500 0 .171 4 11/24/06 9: 00 0.055 1.98 7 1.30 0.231 0 .325 1 1/09/08 12 :00 0.045 1 .29 8 1 . 10 0.091 Computed Peaks 0.293 3 .50 50 . 00 0.980 Flow Duration from Time Series File:11706wrdout. tsf Cutoff Count Frequency CDF Exceedence_Probability CFS � � � 0 .003 30356 49 . 504 49.504 50.496 0 . 505E+00 0 .010 5690 9 .279 58.783 41.217 0. 412E+00 0 .016 6414 10.460 69 .243 30.757 0 . 308E+00 0 .022 4775 7 .787 77 .030 22 .970 0 .230E+00 0 .029 4168 6.797 83 .827 16.173 0.162E+00 0 .035 3918 6.389 90.217 9 .783 0.978E-01 0 .042 2029 3 .309 93 .526 6 .474 0.647E-01 0 .048 1546 2 .521 96.047 3 .953 d.395E-01 0 .054 1339 2.184 98.231 1 .769 0.177E-01 0 .061 700 1 .142 99 .372 0 . 628 0. 628E-02 0 .067 53 0. 086 99 .459 0 . 541 0.541E-02 0 .073 27 0. 044 99 .503 0.497 0.497E-02 0 . 080 23 0. 038 99 .540 0.460 0.460E-02 I 0 .086 28 0. 046 99 .586 0.414 0.414E-02 0 . 093 23 0.038 99 .623 0.377 0.377E-02 j 0 . 099 12 0. 020 99 .b43 0.357 0. 357E-02 0 . 105 11 0.018 99 .661 0.339 0.339E-02 0 . 112 12 0.020 99 .680 0.320 0. 320E-02 0 .118 23 0.038 99 .718 0.282 0.282E-02 0 .125 23 0.038 99 .755 0.245 0.245E-02 0 .131 18 0. 029 99.785 0.215 0 .215E-02 0 .137 13 0. 021 99 .806 0.194 0 . 194E-02 0 .144 10 0.016 99 .822 0. 178 0. 178E-02 0 .150 12 0. 020 99 .842 0.158 0. 158E-02 0 .156 13 0. 021 99 .863 0. 137 0. 137E-02 0 .163 10 0.016 99 .879 0. 121 0. 121E-02 0 .169 16 0.026 99 .905 0.095 0.946E-03 0 .176 13 0.021 99 .927 0. 073 0.734E-03 0 . 182 11 0.018 99 .945 0.055 0. 554E-03 ' 0 .188 8 0.013 99 .958 0.042 0.424E-03 0 . 195 10 0.016 99 .974 0.026 0.261E-03 0 .201 5 0.008 99 .982 0. 018 0.179E-03 0 .208 1 0 . 002 99 .984 0. 016 0.163E-Q3 1 0 .214 3 0.005 99 .989 0 .011 0. 114E-03 0.220 2 0.003 99 .992 0.008 0. 815E-04 0.227 3 0.005 99 .997 0.003 0.326E-04 Duration Comparison Anaylsis Base File: 11706wpre.tsf New File: 11706wrdout. tsf Cutoff Units : Discharge in CFS -----Fraction of Time----- ---------Check of Tolerance------- Cutoff Base New $Change Probability Base New �Change 0 .059 � 0.95E-02 0.68E-02 -28 .5 � 0.95E-02 0 . 059 0 . 057 -3 .1 0 .076 � 0. 63E-02 0.48E-02 -24 .0 � 0.63E-02 0 . 076 0 . 060 -20 . 0 0 .092 � 0.50E-02 0.38E-02 -22 .7 � 0.50E-02 0. 092 0 . 074 -19 . 6 0 .108 � 0.37E-02 0.33E-02 -10.1 � 0.37E-02 0. 108 0. 094 -12 . 6 0 .124 � 0.28E-02 0.24E-02 -13 .8 � d.28E-02 0.124 0. 218 -5. 1 0.140 � 0.22E-02 0.19E-02 -15 .4 � 0.22E-02 0. 140 0. 129 -8 . 1 0.157 � 0 .15E-02 0.14E-02 -9 .8 � 0.15E-02 0. 157 0. 152 -2 . 9 0.173 � O.10E-02 0.80E-03 -21 .0 � 0.10E-02 0.173 0. 168 -3 . 1 0 .189 � 0. 62E-03 0.39E-03 -36 .8 � 0.62E-03 0.189 Q. 18� -4 . 6 0 .205 ( 0. 34E-03 0.16E-03 -52 .4 � 0.34E-03 0.205 0. 192 -6 .7 0 .222 � 0.21E-03 0.65E-04 -69 .2 � 0.21E-03 0.222 0.200 -9 .8 0 .238 � 0.16E-03 O.00E+00 -100 .0 � 0.16E-03 a.238 d.208 -12 .6 0 .254 � 0.11E-03 O.00E+00 -100 .0 � 0.11E-03 0.254 0.215 -15 .4 0 .270 � 0.16E-04 O.00E+00 -100 . 0 � 0.16E-04 0.270 d.228 -15 .8 There is no positive excursion I Maximum negative excursion = 0. 019 cfs (-22 .9$) occurring at O.d83 c_fs on the Base Data:11706wpre. tsf and at 0 . 064 cfs on the New Data: 11706wrdout. tsf I il' � : i �1 u'�U i;�U I c:'�1::1�1 L'��::ITt �1 1Il Ic .;�t_c:� _ _.�� . _ _. . .,c��.•�1;�L. �. . Cutoff Count Frequency CDF Exceedence_P: _ ._ . CFS � � � ' 0.060 60737 99 .049 99.049 0.951 0.951E-C: 0 .067 118 0.192 99.242 0.758 0.758E-C: 0 .075 72 0.117 99.359 0. 641 0. 641E-C; 0. 082 41 0 .067 99.426 0. 574 0.574E-C� 0. 090 40 0.065 99_491 0. 509 0.509E-C: 0. 097 36 0.059 99.550 0.450 0.450E-C: ' ' 0.105 36 0.059 99 .609 0. 391 0.391E-C 0.112 28 0.046 99.654 0. 346 0.346E-C. 0.120 23 0 .038 99.692 0.308 0.308E-C ' ' 0.127 22 0 .036 99.728 0.272 0.272E-C ' 0.134 16 0.026 99.754 0.246 0.246E-G� 0.142 18 0.029 99 .783 d.217 0.217E-02 0.149 24 0.039 99 .822 �.178 0.178E-02 0.157 19 0.031 99 .853 Q.147 0.147E-02 0.164 12 0.020 99 .873 0.127 0.127E-02 0.172 15 0.024 99 .897 0.103 0.103E-02 0.1`19 12 0.020 99 .917 0.083 0. 832E-03 ' 0. 187 10 0.016 99 .933 0.067 0. 669E-03 0. 199 9 0.015 99 .948 0.057. 0. 522L-03 0.202 9 0.015 99 .962. 0.038 0. 375E-03 0.209 5 0.008 99 .971 0.029 Q.7.94L-03 0.217 2 0.003 99 .974 0.026 0.261E-03 0 .7.24 3 0.005 99 .979 0.021 0.212E-03 0 .232 2 0.003 99 .982 0.018 0. 179E-03 0.239 1 0.002 99 .984 0.016 0. 163E-03 0 .247 1 0.002 99 .985 0.015 0. 147E-03 0 .254 4 0.007 99 .992 0.008 0. 815E-04 0 .262 3 0.005 99 .997 0.003 0.326E-04 0 .269 1 0.002 99 .998 0.002 0. 163E-04 0.277 1 0. 002 100. 000 0 .000 O. O00E+00 0 .284 a o.000 10Q. 000 0 .000 O. 00OE+QO 0 .292 0 0.000 10Q. 000 0 .000 O.O00E+00 0.299 0 0.000 100. 000 0 .000 O.00Or+00 0 . 307 0 0.000 1�0. 000 0 .000 O.O00E+00 U.314 0 0.000 1a0.000 0 .000 O.O00E+00 0 .322 0 0 . 000 100 . 000 0 . 000 O.O00E+00 ' Flow Duration from Time Series File: 1i706wrdout. tsf Cutoff Count Frequency CDF Exceedence_Probability crs � � � 0 . 003 30356 49 .504 49 .504 50.496 0.505E+00 0 . 010 5690 9 .279 58 .783 41.217 0.412E+00 0 . 016 6414 10.460 69 .243 30.757 0.308E+00 0 . 022 4775 7 .787 77 .030 22 .970 0.230E+00 0 .029 4168 6 .797 83 .827 16.173 0.162E+00 0 .035 3918 6 .389 90.217 9.783 0.978E-01 0 .042 2029 3 .309 93 .526 6.474 0. 647E-01 C� .048 1546 2 .521 96.047 3 .953 0.395E-01 G . 054 1339 2.184 98 .231 1.769 0.177E-01 0 . 061 700 1 .142 99 .372 0. 628 0. 628E-02 G . 067 53 0 .086 99.459 0. 541 0.541E-02 0 .073 27 0.044 99 .503 0.497 0.497E-02 0 .080 23 0.038 99 .540 0.460 0.460E-02 0 .086 28 0.046 99 .586 0.414 0.414E-02 0 .093 23 0.038 99 .623 0.377 0.377E-02 0 . 099 12 0.020 99 .643 0.357 0.357E-02 0 . 105 11 0 .018 99 .661 0.339 0.339E-02 0 . 112 12 0 .020 99 .680 0.320 0.320E-02 0 . 118 23 0 .038 99 .718 0.282 0.282E-02 0 . 125 23 0.038 99 .755 0.245 0.245E-02 0 . 131 18 0.029 99 .785 0.215 0.215E-02 0 . 137 13 0.021 99 .806 0.194 0. 194E-02 0 . 144 10 0.016 99 .822 0.178 0.178E-02 0 . 150 12 0.020 99 .842 0.158 0.158E-02 0 . 156 13 0.021 99 .863 0.137 0. 137E-02 0 . 163 10 0.016 99 .879 0.121 0. 121E-02 0 . 169 16 0.026 99 .905 0.095 0. 946E-03 0 . 176 13 0 .021 99 .927 0.073 0.734E-03 0 .182 11 0.018 99 .945 0.055 0.554E-03 0 . 188 8 0.013 99 .958 0.042 0.424E-03 0 .195 10 0.016 99 .974 0.026 0.261E-03 0 .201 5 0.008 99 . 982 0.018 0. 179E-03 0 .208 1 0.002 99 .984 0.016 0. 163E-03 0 .214 3 0.005 99 .989 0 .01i 0. 114E-03 Q .220 2 0.003 99 .992 0 .008 0.815E-04 � .227 3 O. OQS 99 . 99% 0 . ^03 0 . 326E-04 ' Duratiori Comparison Anaylsis Base File: 11706wpre.tsf New File: 11706wrdout. tsf Cutoff Units: Discharge in CFS -----Fraction of Time----- ---------Check of Tolerance------- Cutoff Base New �Change Probability Base New �Change 0 .059 � 0.95E-02 0.68E-02 -28. 5 � 0.95E-02 0.059 0 .057 -3 .1 0 .076 � 0. 63E-02 0.48E-02 -24 .0 � 0. 63E-02 0.076 0 .060 -20 .0 0 .092 � 0.50E-02 0.38E-02 -22.7 � O.SOE-02 0.092 0.074 -19 .6 0 .108 � 0.37E-02 0.33E-02 -10.1 � 0.37E-02 0.108 0 .094 -12 . 6 0 .124 � 0.28E-02 0.24E-02 -13.8 ( 0.28E-02 0.124 0.118 -5 .1 0 .140 � 0 .22E-02 0.19E-02 -15.4 � 0.22E-02 0.140 0.129 -8 .1 0 .157 � 0.15E-02 0.14E-02 -9.8 � 0.15E-02 0.157 0.152 -2 .9 0 .173 � 0.10E-02 0.80E-03 -21.0 � 0.10E-02 0.173 0.168 -3 .1 0 .189 � 0. 62E-03 0.39E-03 -36.8 � 0. 62E-03 0.189 �.180 -4 . b 0 .205 � 0.34E-03 0.16E-03 -52 .4 � 0.34E-03 0.205 0.192 -6 .7 0 .222 � 0.21E-03 0.65E-04 -69.2 � 0.21E-03 0.222 0.200 -9 . 8 0 .238 � 0.16E-03 O.00E+00 -100.0 � 0.16E-03 0.238 0.208 -12 . 6 0 .254 � 0.11E-03 O .00E+00 -100.0 � 0.11E-03 0 .254 0.215 -15 .4 0 .270 � 0. 16E-04 O .00E+00 -100.0 � 0.16L-04 0.27� 0.228 -15 . 8 There is no positive excursion Maximum negative excursion = 0. 019 cfs (-22 .9�) occurring at 0.083 cfs on the Base Data:11706wpre. tsf and at O .fl64 cfs on the New Data:1170bwrdout.tsf '