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Home My WebLink AboutORD 5611 – Sunset Area Surface Water Master Plan CITY OF RENTON, WASHINGTON ' ORDINANCE N0. 5611 ' AN ORDINANCE OF THE CITY OF RENTON, WASHINGTON, ADOPTING BY REFERENCE THE SUNSET AREA SURFACE WATER MASTER PLAN. : WHEREAS, the Council has heretofore adopted stormwater controls for the City of Renton; and WHEREAS, adoption of a comprehensive system of stormwater controls for the Sunset Area has been reviewed in the Sunset Area Draft Environmental Impact Statement issued in ' December 2010, and in the Sunset Area Final Environmental Impact Statement issued in April 2011; and WHEREAS, the City is simultaneously adopting the Sunset Area Planned Action ', ordinance which requires implementation of a comprehensive system of stormwater controls for the Sunset Area in the best interest of, and for public benefit; and ' WHEREAS,the City has held a public hearing on this matter on April 6, 2011; and ' WHEREAS, the Planning Commission has made certain findings and recommendations ' to the Council; and WHEREAS, the Council has duly determined after due consideration of the evidence before it that it is advisable and appropriate to adopt the Sunset Area Surface Water Master Plan; NOW, THEREFORE, THE CITY COUNGL OF THE GTY OF RENTON, WASHINGTON, DOES ORDAIN AS FOLLOWS: SECTION I. The above findings and recitals are found to be true and correct in all respects. 1 ORDINANCE N0. 5611 SECTION II. The Sunset Area Surface Water Master Plan, as shown on Attachment A and incorporated herein as if fully set forth, is herby adopted by this reference. SECTION III. This ordinance shall be effective upon its passage, approval, and five (5) ' days after publication. PASSED BYTHE CITY COUNCILthis 13th dayof June , 2011. , t��t.��,� �• �' Bonnie I. Walton, City Clerk APPROVED BY THE MAYOR this 13 th day of June , 2011. � r �.�'��w� ""��;� �,�°�" �� Denis Law, Mayor ' Approved as to form: �tN►��a.qe'�G�� _ " �„_,., * Lawrence J. Warren, City Attorney :.`p• . _ ' �.. � , �-�� 6/17/2011 (summary) LL-- � �� t�F , ` Date of Publication: �;�. -�' �"_ ' `,� ' ORD:1707:4/12/11:scr ��, ' �K�.. ..- 2 - - ORDINANCE NO. 5611 ATTACHMENT A SUNSET AREA SURFACE WATER MASTER PLAN - - t � � � � � � �: , p . � , �� y��,� ,�,�,�`��'�� f�, �� y5�� /��,�/�� r//y��ZS � �/ N ,g� ��, p y, s/.�wY��F � 8 '� T��'� �� F 2� � � , � ��f✓ E8: � -s� 2 � ; ��,�,. . � f^,�, - �- 2 ; a '� . �9zT�/�Y�e-� �. K _ � ' � 1T �� .a � � �� ¢i . . � �• r " ' "�« S,c A � - ��~a'��._�� y, Y v.6 �� .� �� . v''x fy_ � �. �i... ^'^`� fi . , ' r� . ��y'.. �;�. -�K .. {'� f � / �a ae� e p.. �kro _ , �}= J�v �.�„� 5`~y`��'�. A . �. � .T '�.— �+r^ ^'^�a . � �� .,efi�� _��' � 6 ��.. �9 Z � � �� fr.'� .. 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"� �'�' ' � ` ;�r�' �"g' � � � � r^'��-y> a3�,� �� .. �� '� ��b �..� �::. �� ..��r �� ...� �� a��, �� r�� a��'� � � � �� : �� d �^ �� ;� A �.� �� :� 3�^��z,� ¢ ��' �� s �3 � < ;.`�� 3. �' �� w � ° �a�'�� 4 ��r�� `� �� .��x _- � �o��z�. i � ._ �" , c'�: � '��`,�� :�`,`��"�'�"q�r'��. �� -�.. �r� ..z . _z��,�-'z-��a�.�,��'.;;� z�i:rA�'"i` � :�:. ?�„�: ,.,,F . ��_. _ ORDINANCE NO. 5611 1 ITY U IL VIEUV AFT 2 3 t r rf r t I 4 5 6 7 Prepared for s City of Renton 9 10 11 12 13 14 15 16 17 Prepared by 18 ��. 19 1100 112th Avenue NE 20 Bellevue,WA 98004 21 22 23 24 �� ' 25 �y�' 26 `� � 27 , 28 ,� 29 �' 30 31 32 33 34 35 36 37 38 April 2011 39 - ORDINANCE N0. 5611 1 nt nt 2 Contents...........................................................................:............................................................iii 3 1 Introduction......................................................................................................................1 4 Purpose..............................................................................................................................1 5 Planned Action Study Area............................................................................................1 6 Community Input................................................�--.........................--�--............................1 7 Priority Levels..............................................................................................:....................2 8 2 Study Area Characteristics.............................................................................................3 9 Drainage Basins and Land Cover...................................................................................3 10 Groundwater.......................................................:............................................�----............7 ' 11 Drainage System...............................................................................................................7 12 3 Applicable Regulations..................................................................................................9 13 Federal...............................................................•---...........................----..............................9 14 State...................................................................................................�---.............................9 15 Local...................................................................................................................................9 ' 16 Sunset Area Revised Flow Control Strategy...............................................................10 17 4 Proposed Projects..........................................................................................................13 ' 18 Green Connections.......................................................................................•----�--..........13 19 Sunset Terrace Sub-Regional Facility..........................................................................19 20 Conveyance Improvements..................................................................................�---....21 21 5 Project Implementation................................................................................................25 22 Project Planning Cost Estimate.......................................................................�--...........26 23 6 References.......................................................................................................................29 24 ' 11SIMBAIPROJ\RENTONWAGTYOF14 0 8 31 419_STORMWATERIDRAINAGEMASTERPLANICOUNCILREVIEWDRAFl1SUNSETAREA SURFACEWATER MASTERPLAN 04 21_COUNCILREVIEWDRAFf.DOCX III - - ORDINANCE NO. 5611 CONTENTS 1 Tables 2 1 Targeted Level of Flow Control Mitigation by Public Infrastructure Projects 3 2 Priority Leve11 Projects and Costs 4 3 Priority Leve12 Projects and Costs 5 Figures ' 6 1 Drainage Basins 7 2 Soil Types&Aquifer Protection Zone 8 3 Steep Slope Areas ' 9 4 Green Connections ' 10 5 Typical Sections for Harrington and Jefferson Avenue NE 11 6 Typical Sections for Edmonds Avenue NE and NE 12�Street 12 7 Sub-Regional Flow Control Facility , 13 8 Proposed Storinwater Drainage Conveyance System ' 14 Appendices 15 A.Summary of Expected New Effective Impervious Area 16 B. Summary of Peak Flow Rates for the Study Area 17 C. Opinion of Cost 18 D.Hydrologic and Hydraulic Model Output IV SUNSETAREA_SU RFACEWATER_MASTERPLAN_0421_COUNCI LREVIEWDR4FT.DOCX - ORDINANCE NO. 5611 1 1 Introducti n 2 Purpose 3 This Surface Water Master Plan was written to guide the City of Renton's surface water ' 4 management program within the Sunset Planned Action Study Area. It also identifies ' 5 surface water projects and priority needs and develop long-term solutions that meet ' 6 regulatory requirements,reflect the community's priorities,and cali be funded by the City ' 7 or through future developments.A study was conducted in support of this master plan to 8 evaluate surface water infrastructure improvements necessary to support the 9 redevelopment of the Sunset Terrace public housing community and associated 10 neighborhood growth and revitalization,including other public service and infrastructure 11 improvements(e.g.,transportation improvements).This Surface Water Master Plan is 12 prepared in conjunction with a Sunset Terrace Planned Action Environmental Impact 13 Statement. 14 Planned Action Study Area 15 The study area for the Surface Water Master Plan is generally bounded by NE 21st Street on 16 the north,Monroe Avenue NE on the east,NE 7th Street on the south,and Edmonds 17 Avenue NE on the west.The development of the study area started in the mid 1940's.The 18 City utilities,includes storm drains,serving the area were installed as the area developed. ' 19 The age of some of the existulg storm drains infrastructure is estimated to be more than fifty 20 years old.The study area land uses include mixed-use,mixed-income residential, ' 21 commercial,and retail properties.The businesses are primarily located along Sunset 22 Boulevard and NE 12th Street. ' 23 The Sunset Area Community Investrnent Strategy developed by the City of Renton in 2009 ' 24 identified several residential streets in the neighborhood, designated as"Green 25 Connections;' that would be transformed to improve pedestrian and bicyclist mobility, 26 improve stormwater quality,mitigate the quantity of stormwater runoff,and create an 27 inviting corridor to enhance the neighborhood. �8 Community Input 29 In 2009,a Sunset Community Investrnent Strategy(CIS)was initiated to create a blueprint 30 for the public investrnent that can be coordinated and phased in over the coming years. 31 Some of the projects listed below were based on the result of the CIS. Elements of the 32 Surface Water Master Plan were also included in the Plaruzed Action environmental impact 33 statement process,which includes scoping meetings and comment periods,the Draft 34 Environmental Impact Statement(EIS)and comments,and responses to comments in the 35 Final EIS. SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDR4FT.DOCX 1 ORDINANCE NO. 5611 1 INTRODUCTION � Priority Levels 2 Priority levels were assigned to projects identified in this plan.These priority levels are 3 intended to inform decisions on the timing of the projects and the expenditure of limited 4 resources,and are defined as follows 5 Priority Leve11:Projects with priority levell are deemed critical because they 6 address an immediate system deficiency or coincide with redevelopment of Sunset 7 Terrace or other public infrastructure improvements to support the potential 8 redevelopment. For example,the Harrington Avenue Green Connections projects, 9 which improve pedestrian mobility and safety between important public spaces and 10 schools within the Sunset Area,are priority levell. 11 Priority Leve12:Priority level2 projects are not immediately necessary and could be ' 12 implemented to support redevelopinent or to reduce costs.by consiructing them , 13 concurrenfly with other public infrastructure improvements,e.g. lower priority 14 Green Connections. 2 SUNSETAREA_SURFACEWATER_MASTERPIAN_0421_COUNCILREVIEWDRAFT.DOCX _ ORDINANCE NO. 5611 1 2 Study Area Characteri�tics 2 Drainage Basins and Land Cover 3 The Planned Action Study Area is currently developed for residential and commercial land 4 uses. In general,the stormwater runoff frorn this area drains to roadside ditches,catch 5 basins,and storm drains.The runoff is collected and conveyed ulto larger storm drains 6 within the major streets and discharges into local creeks and drainage tributaries. No 7 stream,water body,or water-related critical area is located in or immediately adjacent to the 8 Planned Action Study Area,and no local flooding has been reported in the area. The Study 9 Area is not within a special flood hazard area mapped by the Federal Emergency 10 Management Agency(FEMA). 11 The Planned Action Study Area comprises approxirnately 269 acres of urban developed 12 area.The area drains to three tributary creeks:Honey Creek,May Creek(Lower May 13 Creek),and Johns Creek.All three creeks are part of the Greater Lake Washington 14 Watershed(Water Resources Inventory Area [WRIA] 8 in King County). Lake Washington, 15 the receiving water body from May Creek and Johns Creek,is the second largest natural 16 lake in Washington. Most of the immediate watershed is highly developed and urban,with 17 63 percent fully developed. 18 Approximately three(3)acres at the norflieast corner of the study area drain to Honey 19 Creek,which is a tributary to May Creek The northwest corner of the study area,which 20 includes 23 acres of primarily single-family residential land use, drains to May Creek.The 21 balance of the study area,approximately 243 acres of mixed single-family residential, ' 22 multifamily residential,and commercial uses, drains to Johns Creek(Figure 1). The existing 23 and preferred alternatives land cover summary are shown in Table A-2 in Appendix A. ', 24 501� 25 The soils influencing the design and function of the siudy area generally consist of urban ' 26 soils (largely fill) and glacially derived outwash and till deposits.Figure 2 shows the surface 27 soil as mapped by the Natural Resources Conservation Service.The northern and southern 28 area consists of outwash soil,which is generally very permeable and has a good infiltration 29 rate. The central and western portion of the study area generally consists of till soil,which is 30 a dense,unsorted mixture of gravel,sand,silt,and clay.Till soil is less permeable flian 31 outwash soil and has limited infiltration capacity.Much of the central portion of the study 32 area is designated as urban soils,which are difficult to classify due to the variable nature of 33 the soil;however,for the purposes of this study,urban soils are assumed to exhibit similar 34 infiltration characteristics as till soil.Figure 2 shows the soil conditions of the study area. 35 Figure 3 shows the area of steep slopes where an infiltration facility is not allowed per City 36 of Renton code. SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFT.DOCX 3 ORDINANCE NO. 5611 j .-, .�� , ::_..-;-- ;- ; . . ; -- , � r � r -� t -- �, :, �; �� , _ , � Sunset Study Area �: " � �� G� � �- , 1 E � � '_ � Q Wetlands _'. ' � _'-� ;� 5� � t; �-� {� { 'Renton Parcels , �� - G�Q`, ' `- € --f ,�'' � - �fUEL@E `„ ` � - �� r �Waterbodies� i � �, � � ��` � r �� }... � _ � �� X_Y f Drainage Basine � _, - 7 `�: � �,_ � 't � ' , i � �Honey Creek Basin ` � �� : �' !� __�__��` � K � �May Creek Basin '' �a�y Creek Bas�n Ma��e + � > � i: �Johns Creek Basin � � � . � ;;; , , Water Courses ' .� -.. �-�-- -�`r �� . _ �.. Ol � �Open Channel `', � . �� -�- �- �'-�i �� 7��4 � `" { ;t �� t__ � �Culvert Section = � i ,D. 1 , } i 7_ � � I .�,; r " I , � � _ � Pipe Section $ � � ,-�-- i ' -� , �; L � � �� ,__ � ;� ' N � 1. � � � � ? __�_ :� �� `Ht�ne Creek Ba �ra=� ;- , A - � '-�-- � r-- � _�- o eoo i,zoo , i i ��-r ..,._ € _ .:( �. (..�� #' T ( . _'s � i� i - . � � }� . i , - � ;� � � [� -{ } t .' " : ... 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S, '��\� ��..�� g "�� 1 . � ��1 �,\ �, i � � � �� ^ � �, a' '�^ ��" ;� ��:� "� �� ' i � � �J �-�-� � � ry � � �� ` �� W � � �,�: "� o s �,� '� # �� ` � � j�� : �� i� � �� p _�` s4� � �, � 3�ffi. 4' �e � �8 �.��..✓F, .�'� � "�� r .-"-'*� ;,',1� ' � s ;��. � �� (��J' � �� •��= ' P'; �. �'as� � ._ � ,�� .�x,�*. � � e w,�y .:.� in .�,,.. », ��;� ?�� '�. w:� �� L` � , � �� v � � � �-� � �� 7th �� _L� n � � ` �� ,�:�-`ca �� _ �� . , �� ,�� Z, �. ��: �� _ � , � � � y ' � ' ,;� �' �`� '� ,,�� 0 �x �� ' ��. �� a �� -� �"� �' �" �� . �� • 5 � � � �� i . $ .y"4� �, �,,Y V =� d ��a, a � � y� ,��y�x� ; £ f�,y,•��` � . . � p ; 4 . 4 "�.�, y� �' ..� .-�. ,r� `�'� ,y �� = � a� � �i ` � �� e �`u� � � "�� 4'^ �� ` - � { ' ��'A. �' � � '.y � � � `�. �� ', �, aQ 1 a �^ � , ,� .�u a � �� , :«�«- ; �e� � � ,� - ,.`-'�,, 3 3..�-�Al� �-x as,.� �` �� :_� <� '" ; " -� `y�� x<.. �, ��x.�� . . � m.. S -� 4 �� .4 C, � � � � Y; 9 � . Y ��,... Re e. 6 �` q 0.., E .,� ' „ . � 'o- , ._: , ,.-.-,..�',»_ ,�. � �.._ ., � 4_�. � -,�,n,. , , , , ,- _� . � ..x`�;� ( Figure 3 ��,„�,;. Steep Slope Hazard Areas City of Renton Sunset Area Master Drainage Plan ORDINANCE N0. 5611 2 STUDYAREACHARACTERISTICS 1 Groundwater 2 The Planned Action Study Area is within the City's Aquifer Protection Zone 2.The 3 protection areas are the portions of an aquifer within the zone of capture,and the recharge 4 area for wells owned or operated by the City. Zone 2 is the land area situated between the 5 365-day groundwater travel time contour and the boundary of the zone of potential capture 6 wells.This aquifer is the sole drinking water source for the City of Renton.The Planned 7 Action Study Area souflz of Sunset Boulevard lies within the source area of Cedar Valley 8 Sole Source Aquifer,designated by the U.S.Environmental Protection Agency,which is also 9 part of the City's Aquifer Protection Zone 2.The limits of the Aquifer Protection Zone and 10 infiltration potential within the study area are presented in Figure 2. 71 Drainage System 12 May Creek Basin 13 Approximately 26 acres within the northern portion of the study area drain to the May 14 Creek Basin. This area is largely developed under single-family residential land use.There is 15 one storm drain system in the study area in May Creek Basin.This system extends along NE 16 16th Street beginning west of Index Avenue NE and drains westward and then north on 17 Edmonds Avenue NE.This system eventually drains to May Creek. 18 May Creek is 7 miles long and originates in the steep forested slopes of Cougar and Squak 19 mountains and in the highlands of the Renton Plateau. The entire basin encompasses an 20 area of fourteen(14) square miles that drains to the southeast portion of Lake Washington ' 21 (City of Renton and King County 2001). The May Creek Basin also includes other tributaries 22 Honey Creek,Boren Creek,and the north,east,and south forks of May Creek. May Creek 23 and its tributaries are designated by Washington Department of Ecology(Ecology) as "Class 24 AA" (superior)because May Creek is a feeder stream to Lake Washington. Class AA waters 25 can be used for water supply(domestic,industrial,and agricultural),stock watering,fish 26 spawning,wildlife habitat,and recreation(Foster Wheeler Envirorunental 1995). 2� Johns Creek Basin 28 Most of flie study area is wifliin the John's Creek Basin.The land use in flus basin is mainly 29 single-family residential,schools,and commercial/industrial development.A small portion 30 is used for multi-family or high-density housing.The upper basin is dominated by 31 residenfial and commercial land use,and the lower basin is dominated by industrial and 32 commercial uses. 33 Johns Creek discharges to Lake Washington at Gene Coulon Park in Renton.Johns Creek 34 extends upstream in a southeasterly direction for less than 1 mile. Because of its proximity 35 to Lake Washington,the stream water elevation is controlled by Lake Washington,and 36 therefore it is considered to be a major receiving water body per the City amendment to the 37 King County Surface Water Design Manual(City of Renton 2010a).The Johns Creek Basin 38 covers approximately 1,236 acres and is located east of the Cedar River,in the northeastern 39 portion of Renton.The drainage system serving the overall basin consists priinarily of SUNSETAREA_SURFACEWATER_MASTERPIAN_0421_COUNCILREVIEWDR4FT.DOCX 7 - - ORDINANCE NO. 5611 2 STUDY AREA CHARACTERISTICS 1 roadside ditches and storm drain pipes. There are three primary storm drainage systems in ' 2 this basin:Sunset Boulevard,NE 9th Street,and NE 7th Street. 3 Sunset Boulevard Storm Drainage System ' 4 Record drawings indicate flze Sunset Boulevard(SR 900) storm drainage system was 5 constructed in the 1970s.The systern consists of 30-inch-diameter pipe downstream of the 6 study area,west of Edmonds Avenue NE.The main trunk of the storm drainage system 7 extends along Sunset Boulevard. This storm drain directly collects runoff from Sunset 8 Boulevard and adjacent properties.This trunk also receives flows from drainage systems on 9 adjacent streets and a 12-inch diameter storm drain on Harrington Avenue NE (south of NE 10 10th Street)was constructed in the 1950s. 11 This system also conveys runoff from Edmonds Avenue NE between Sunset Boulevard and 12 south of NE 16th Street,Harrington Avenue NE,and NE 10th Street immediately north of ' 13 Sunset Boulevard. The Edmonds Avenue NE system conveys runoff from the NE 12th Street 14 system,Harrington Avenue NE system,Jefferson Avenue NE,and Kirkland Avenue NE. 15 The NE 12th Street system was upgraded in the early 1980s into 36-inch-diameter pipe from 16 Kirkland Avenue NE to Edmonds Avenue NE.The system remains as 12-inch-diameter 17 pipe east of Kirkland Avenue NE.The Kirkland Avenue NE system is a 12-inch-diameter 18 pipe that starts at NE 16th Avenue. It was built pre-1950. Currently,the stormwater runoff 19 from Harrington Avenue NE and Jefferson Avenue flows on the street surface and is '. 20 intercepted by the storm drain on NE 12th Street. ' 21 NE 9th Street Storm Drainage System 22 The NE 9th Street system drains the area south of Sunset Boulevard to NE 9th Street. It 23 starts west of Monroe Avenue NE and drains west. It intercepts a storm drain at Harrington 24 Avenue NE. The combined system continues to flow west,then turns north at Ferndale 25 Circle NE,then turns west and becomes an 18-inch-diameter pipe.This system turns west 26 again,crossing under Edmonds Avenue NE toward NE 9thh Place. ' 27 NE 7th Street Storm Drainage System 28 The NE 7th Street system starts east of the study area from Monroe Avenue NE. This system 29 drains west and intercepts two storm drains at Harrington Avenue NE.Only a small portion 30 of the study area drains into fllis storm drain. 8 SUNSEfAREA_SURFACEWATER_MASTERPIAN_0421_COUNCILREVIEWDRAFf.DOCX ORDINANCE NO. 5611 1 3 Applicable Regulations 2 This chapter summarizes the federal,state,and local stormwater regulations that all 3 developments should comply with.Also,the Sunset Terrance Area specific flow control 4 strategy is discussed. 5 Federal 6 Federal stormwater regulations in the Clean Water Act(33 U.S.C. �1251 et seq.) are typically ' 7 promulgated through local stormwater requirements(see below). Projects proposed as part 8 of the Sunset Area Surface Water Master Plan will need to meet the requirements of Section 9 7 of the Endangered Species Act(16 U.S.C. §1531 et seq.),which is regulated by the U.S. 10 Department of the Interior,National Marine Fisheries Service,and U.S. Fish and Wildlife 11 Service. 12 State 13 For projects with an area of disturbance exceeding one(1) acre,the City is required to file a 14 Notice of Intent with Ecology for coverage under the National Pollutant Discharge 15 Elimination System(NDPES)program's General Permit for Stormwater Discharges 16 Associated with Construction Activities.These filings typically require projects to provide 17 erosion-control measures consistent with Ecology's Stormwater Management Manual for 18 Western Washington(Ecology 2005). 19 The City of Renton is required to administer a stormwater management program developed : 20 in accordance with the Western Washington Municipal Stormwater NDPES phase II Permit. 21 Among the specific obligations set forth in this NDPEs permit,the City is required to adopt : 22 by ordinance a stormwater design manual that is equivalent to the 2005 Ecology manuaL , 23 Therefore,the City has adopted the 2009 King County Surface Water Design Manual with 24 City amendments (City of Renton 2010a)for the design,construction,and maintenance of 25 stormwater management systems and facilities that are approved through the development 26 permit process. Permanent stormwater features must meet the manual's design standards 27 or be equivalent. 2s Local 29 RMC 4-3-050,Critical Areas Regulations,addresses the requirements for development 30 within or adjacent to the aquifer protection areas or any other critical area(i.e.,flood hazard 31 areas,erosion hazard areas,wetland,streams,etc). 32 Renton Municipal Code (RMC)4-6-030 and Ordinance No. 5526 address storm drain 33 utilities. Technical requirements for the design of stormwater facilities are contained in the 34 King County Surface Water Design Manual(King County 2009) and the City amendments to 35 the manual(City of Renton 2010). SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFT.DOCX 9 _ _ __ ORDINANCE NO. 5611 3 APPLJCABLE REGULATIONS 1 The City's drainage(surface water)management standards are focused on reducing 2 potential impacts from new impervious surfaces,replaced impervious surface,new 3 pervious surface,and land disturbing activity(2009 KCSWDM and City Amendment). 4 Redevelopment and new development exceeding the thresholds specified in the 2009 5 KCSWDM(as amended by the City) are required to comply with the requirements set forth 6 in the manual,including stormwater treatment and flow control BMPs.The majority of the 7 Planned Action Study Area was developed prior to the advent of modern stormwater 8 requirements(e.g.,implementation of the 1990 King County Surface Water Design Manual) or 9 under less stringent requirements. 10 The drainage(surface water) standards also require the use of flow-control best 11 management practices (BMPs),where feasible.Flow-control BMPs include many low- 12 impact development techniques such as infiltration,dispersion,rain gardens,permeable 13 pavernents,vegetative roofs,rainfall harvesting,reduction of impervious area, and retention 14 of native vegetation.Projects should implement full dispersion or full infiltration of roof 15 runoff where feasible.Where runoff from impervious surfaces cannot feasibly be dispersed ' 16 or infiltrated,the code requires that a minimum portion of the site or impervious area be 17 managed through these practices.Sinall lots of less than 22,000 square feet are required to 18 provide either full infiltration/dispersion of stormwater,where feasible,or,where not 19 feasible,provide flow-control BMPs for an impervious area equal to 10 percent of the site 20 area (for lots smaller than 11,000 square feet) or 20 percent of the site area(for lots between 21 11,000 square feet and 22,000 square feet). For lots larger than 22,000 square feet,the total 22 allowable impervious area exceeds 65 percent for all zoning classifications;therefore,all 23 potential new or redevelopment projects within the study area are required to comply with 24 the flow-control requirements for Large Lot High Impervious BMP requirements that 25 require flow-control BMPs to manage 10 percent of the site or 20 percent of the target 26 impervious surface,whichever is less.The flow control BMP requirement shall be applied to 27 the project site regardless to whether a flow control facility is required. Additional flow 28 controls may be required within the Johns Creek Basin to match peak flows under existing 29 conditions.Areas within May Creek and Honey Creek basins are required to comply with ' 30 the more stringent Flow Control Durafion Standard,which the stormwater runoff release 31 from the site requires matching forested predevelopment conditions. 3� Sunset Area Revised Flow Control Strategy 33 Redevelopment in the study area will comply with all the stormwater regulations and 34 requirements(federal,state and City of Renton).Proposed development and redevelopment 35 projects will provide flow control BMPs(AKA low-impact development practices) onsite as 36 feasible,and water quality treatment onsite.The sub-regional facility and Green 37 Connections will provide flow control mitigation for approximately 5.7 acres of effective 38 impervious area. After flow control BMPs(as feasible and applicable) are implemented on a 39 proposed development site within the Johns Creek Basin,any additional required flow 40 control mitigation maybe fulfilled off-site by the City's sub-regional facility and Green 41 Connections.To do so,project applicants will need to demonstrate that the net effective 42 impervious area for the development or redevelopment site,constructed public 43 infrastructure improvements and post-2011 projects for the entire Sunset area is less than or �p S UNSETAREA_SU RFACEWATER_MASTERPIAN_0421_COUNCI LREVIEWDRAFf.DOCX _ ORDINANCE N0. 5611 3 APPLICABLE REGULATIONS 1 equal to the current(2011) existing conditions. Flow control mitigation for all targeted 2 surfaces will be required to be met on-site under the following conditions 3 • Proposed projects precede construction of the public irLfrastructure improvements 4 • Connection to the downstream drainage system is not available. ' 5 • Net new effective impervious area of the proposed project plus projects constructed 6 in the Study area after 2011 (after implementing Flow Control BMPs)exceeds 5.7 ' 7 acres (or the total area mitigated by the constructed public infrastructure projects) 8 • Or a combination of the three conditions above. 9 No public infrasiructure projects are proposed within the May Creek Basin and therefore ' 10 individual development or redeveloprnent projects will be required to comply with the 11 appropriate flow conirol requirements on-site. SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDR4FT.DOCX �� ORDINANCE NO. 5611 1 4 Proposed Projects 2 As part of the Planned Actioil Draft EIS(City of Renton 2010b) and the Sunset Community 3 Investment Strategy(City of Renton 2009),several stormwater projects were identified, 4 includuig a sub-regional flow control facility,Green Connections using low-impact 5 developrnent facilities(LID),a new conveyance systern,and upsizing of the existing system. 6 These projects will pravide flow control,water quality improvements,or conveyance 7 capacity for future redevelopment. s Green Connections 9 Green Connections involves street improvements meeting the City of Renton Complete 10 Street requirements.Complete Streets include features that enhance the pedestrian 11 experience such as wider sidewalks,narrower travel lanes for vehicles, and landscaping in 12 the form of rain garden/planters.Harrington Avenue NE,Jefferson Avenue NE,Edmonds 13 Avenue NE,12th Street,and two alleys were identified as potential locations for Green 14 Connection improvements.Ten segments of Green Coniiecfions irnprovements were 15 identified for potential implementation.Three segments are located on Harrington Avenue 16 NE. Another three segments are located on NE 12th Street and Edmonds Avenue NE.One 17 segment is on Jefferson Avenue NE.Two segments are on alleys: one is west of Jefferson 18 Avenue NE,and the other one is west of Harrington Avenue NE.A last segment is on the 19 sidewalk between NE 16th Street and Index Avenue. Figure 4 shows the location of the 20 Green Connection projects. 21 The primary storm drainage features of the Green Connecfions projects consist of roadside 22 rain gardens and permeable sidewalks. Roadside rain gardens receive stormwater runoff 23 from the roadway and,in lirnited instances,from adjacent properties.The runoff is treated ' 24 by flowing through the bioretention soil mix(consisting of sandy loam soils and compost) 25 and vegetation,and then infilirated into the native ground during srnaller storms.During 26 larger or higher-intensity storms,the stormwater runoff will continue to infiltrate as allowed 27 by the native soil,with excess runoff stored temporarily in the soil and the active storage 28 within the rain garden. Once the storage and infiltration capacity of the rain garden is 29 exceeded,runoff would then overflow into the street.Where native soil infiltration capacity ' 30 is limited,the rain gardens would be installed with subsurface underdrains to collect the 31 treated water that filters through the bioretention soils.A storm drain system will be needed 32 to convey the overflow runoff from the rain garden and to meet the City's storm drain : 33 design standard. Only the cost of the Low Impact Development improvements (e.g.rain ', 34 gardens,porous sidewallcs,etc.)associated with the green connections are shown in Table 2. 35 The storm drain conveyance systems needed for street improvements are ineludes as part of ' 36 the street improvements cost estimates included in the capital facilities plan. s� Residential Access Streets 38 Harrington Avenue,Jefferson Avenue,NE 16th Street,and NE 9th Street are classified as 39 Residential Access Streets in fl1e City of Renton Compete Street Ordinance(551�. Per flus SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFT.DOCX 13 ORDINANCE NO. 5611 4 PROPOSED PROJECTS 1 Ordinance residential access streets requires a right-of-way widflz of 53 feet for a two-lane 2 road.This breaks down into 20 feet of paved roadway,6 feet of parking on one side of the 3 street,a 6-foot-wide sidewalk, and an 8-foot planter strip on both sides of the street. 14 SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFT.DOCX ORDINANCE NO. 5611 Regional Stormwater Facility �Planned Action Study Area Parcels Green Connections ;;„zw .:��Alley Woonerf reen Access �Green CollectorArterial CRE K ��Permeable Sidewalk .�'� ,.�' � Drainage Facility Sub-Basins Honey Creek C'�Johns Creek 0 Johns Creek-Sunset Terrace J �` CREEK ' C_�May Creek N �,..��k ' A ` ' � �,�a�,r 0 600 1,200 Feet ., �< ' r;;�� (��, ��'��t��j � f �� `� U ET C ,�,✓"'`�,�, ' v_ , �., � >' c�< b� o � 0 � V � a d a Sou c :AKC,03- 0 v Figure 4 �! Green Connections City of Renton Sunset Area Master Drainage Plan ORDINANCE NO. 5611 4 PROPOSED PROJECTS 1 The existing right-of-way on these streets is 60 feet;thus there is an additional7 feet of space ' 2 that can be used for low-impact development features. The proposed Green Connection 3 typical street section would include 20 feet of paved roadway with 6 feet of parking on one 4 side of the street,an 8-foot sidewalk on one side of the street and a 5-foot sidewalk on the 5 other side of the street,and a 6-foot planter and a 12-foot rain garden on one side of the 6 street. It requires a total of 58 feet of street width.Figure 5 shows the proposed roadway 7 section. s Harrington Avenue NE 9 Three segments of Green Connections are proposed in Harrington Avenue Ne.The northern 10 segrnent on Harrington Aveizue NE is between NE 16th Street and NE 12th Street.This 11 Green Connection corridor would be enhanced by narrowing the through-traffic lanes to 12 calm traffic,creating wide planter areas and wider sidewalks as shown in the City's 13 complete street section.The 210 feet of vehicle travel lanes will be centered on the street '� 14 right-of-way.A rain garden(12 feet wide) and the 6-foot parking with 6-foot-wide planter 15 will be generally alternating on either side of the street.An 8-foot-wide sidewalk will be on ' 16 the west side of Harrington adjacent to the McKnight Middle School and a 5-foot sidewalk 17 on the east. At the end of the block,rain gardens will be on both sides of the street. 18 Depending on the need for street parking,parking may be available on both sides of the ' 19 street at selected locations. 20 The middle segment is betcveen NE 12th Street and Suriset Boulevard.A poriion of 21 Harrington Avenue NE will be vacated,becoming an open space for Sunset Terrace,and 22 there will be no Green Connection in this portion.The last segment is the south segment, 23 between Sunset Boulevard and NE 8th Place,and on NE 9th Street between Harrington 24 Avenue NE and Index Avenue NE.The street improvements for the middle and south 25 segments would be similar to the north segment. 26 Jefferson Avenue 27 Jefferson Avenue NE is a residential access street,like Harrington Avenue NE.The typical 28 2-lane street secfion used on Harrington Avenue NE will be used on Jefferson Avenue NE as 29 well.It will have two 10-foot travel lanes ui the center,with the rain gardens either on 30 alternating sides or both sides of the street. s1 Collector Arterials 32 NE 12th Street and Edmonds Avenue NE is classified as collector arterial in the City of 33 Renton Complete Street Ordinance.The required width for a collector arterial includes a 83- 34 foot right-of-way for a two-lane road and 94foot right-of-way for a three-lane road.The 35 street section generally requires 30 feet of paved roadway for vehicle and bicycle lanes,8 36 feet of parking,and 8-foot sidewalks and 8-foot planter strips on both sides of the street The 37 proposed typical street section for this Green Connection would include a minimum of 30 38 feet for paved roadway,8 feet of parking, an 8-foot planter str�ip on one side of the street,a 39 16-foot rain garden on the other side of the street,and 8-foot-wide sidewallcs on both sides 40 of the street.Figure 6 shows the proposed two-lane,three-lane,and four-lane roadway 41 sections. 42 16 SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFf.DOCX ORDINANCE NO. 5611 Section 1: Rain Garden on West Side of Street �, ��% �i fi�f%NNU7C�AAEt ERiSilNG Fk€faHt-Ut--WAY � 8, j�' �I�' �tfl'' g' I3' 5` � � ' S1k�J�YYd�K. EtAl�t-GI.Rl7EN.. � . ... . .... . . � � �� .:� P#Rtf#NG Pl,4NTER S1E}ENAL� ��. � i � �a � � � i i -.�i. � . .,, - � �. � �"�^� � �� t ��,.. ,.�, e----�-�� °;_ > _,..,�,__,. �. . _. ,..,-:,. ,.. � ��" � �� ..... , ��, � � � :?�`° � � � � �, ; � 56'Rrs�A�s�ri Raa��Seetian. �� . .. I� � . . . . . .. . . .. . . i � . Section 2: Rain Garden on Both Sides � �� : APPR4X7ldtATE EXiSTtNt`i R1{`aHT-flF-Wt`x� , � �� 12• �� '�t �� Y y � - •-� , � s�oEw�sc �.ar�.rwzri��s r�actv-c�at�a�H:; s�a�wnc C � � I � 1 � � �� V' " l � . ; � ,f� °---x�,. ' � � �; � ��: �.�.: : . . .,: �r� ,. :-:�......._ � , _�. �. „ � M�._.; � 5S°FrciPaised Rs�d�ecSwn �� I , e Section 3:Parking on Both Sides ' � __ __ ___ __.. __ _ -.,� , AFP�Q�A�A'TE EXt5T6NG RtGH7-�?F-WAY � ._ �$' S" S'-� 1tt"�. . ... . . y� . . . &+� #.. .�. . � 5' � ��. ( saD�sva�rc ��nHT�a a�.�Kt�� :��s��ct��' �zaNr��a sar�E�ra� � { �: 1 j . y 1 _,� . � ', _ , . . , � �� H ^ ' , ' �- = ...,.� ;.,.:. ��-- , ', ' ,.... ..,,. .�%„_. �..,. . . � ;. ..i. „ . . . . . �. ��; 5S'P�»pvsed Ro�a�:S�cEio�n� ��. , �� ... ... .. . .. .. . . . . .. . . . , i Figure 5 Harrington and Jefferson Avenue Sections — ORDINANCE NO. 5611 Section 1: Collector Arterial with Left Turn Lane (Edmonds Ave.) R4'RFCIT iTRFi1 RiC:HT-(lF-W AY � �rt I � ' , . .R' 6' 1:5' ]t" 15' 8" 8' 8" . ' _ .. *.. .. . ._ 3. SYCSEWRLK FiA1N-�^ARDEN�: .. ......... . ...... ... iTARKINt'a RLdN7Efk SS�EWALIf � ( �. :� � � � : „-^.—� ' � � �# - --n^a� a � ■ � z .- � -,,; „ .. ..: .:�: .. . - �# : � _.„. ( �` .� ,. �.., ' -� ,_ . � :' - '��. ' e . ...,� 'm,� �,e.,,,,��.. .. � . � I �-;�„'�,,.`.>*,. - � + �P'PftG?POSED R(3R�k�<:TES3N �� Section 2: Collector Arterial,2-Lane with Shared Roadway (12th St&Edmonds Ave.) 83'REQUTRED RIGHT-0RWAY S � �i R; __ ___ _. ._.. { :. E", . #S' 9��5' . : f 5' . e�' .£i` g•. 1 f —� , � ui�ENALK. Rf2I'+IGFFDEt^! Sf�AFEDLRNE SH�iRE�UzNE PARfi9htG" fLAA.1TER` SIGkEi'VALY � � � � ' � : , _ � a `' �� ' � " . .... '_ �� r ,r' .i� . , �,.�,� . � ,. ,.._. : , �W .., � +�a °�,� ��.:.� ,..�Y: ;-, '; , „ '�- , ,., �`; ,./,.,,::,, . �,,. ..;.,../,,, H . , , ,_ _„ ,_ , . . . , � � ;e��o�os�o�ra�,a s�cr�r ra � I .ftA4N i,AR�Ehi At�JF3 PARKCi�C,'PLANTER�,EP,TIC?N,ALTER'�ATE�IHEET u[LjE�. Section 3:4-Lane Collector Arterial,No Parking (12th Street) � S3'REQUIRED RIGHT-OF-WAY I L ' $ ..._.._.�._._.......#. 7�' . � 1�4' .�. 1�`' Y5'� �4: . .�• .t � �tC�Et�dAIK r�€��a.��r�� ssaa;-zEt3€�r�� SHAE�E�?tfiNE szc�aanun�s K�€:�,tu��s ru,r;T�h i � � � I r � 3�--� ' 'i�� _ -_.._ � ` � ,�.,�,� ( ` �" ` :, . , ..... .��. ■ C .� ..___-- _ -�,� _._..,.k .,. . ...,' ,... � ',,. :: I � ,� IIs PE?��GSED 3��k�i SE�'fitOtU � � � � Figure 6 Edmonds and 12th Street Sections ORDINANCE NO. 5611 4 PROPOSED PROJECTS 1 The Green Connection on collector arterial includes Edmonds Avenue from 7t11 Avenue to 2 NE 12th Street,then continues eastward on NE 12th Street to Monroe Avenue NE.Three 3 typical sections are proposed for these two collector arterials.These sections are shown in 4 Figure 6. 5 Other Green Connection Improvements 6 Green alleys are proposed in two locations. One is on the parcel between Jefferson Avenue 7 and Index Avenue,north of NE 12th Street,and the other is in the alley between Harrington 8 Avenue and Glennwood Avenue,south of Sunset Boulevard. Green alleys consist of a 9 narrow conventional asphalt driving aisle with adjacent permeable pavement shoulders for 10 delineating areas for pedestrians and infiltrating stormwater. 11 Pervious sidewalk is proposed between Index Avenue and NE 16th Street,connecting the 12 Index Avenue neighborhood to the Hillcrest neighborhood. 13 Sunset Terrace Sub-Regional Facility 14 Sunset Terrace is located between Sunset Boulevard(SR 900),Edmonds Ave,and NE 12th 15 Street. It is currently a multi-family and retail commercial use area. Under the Preferred 16 Alternative in the Planned Action Final Environmental Impact Statement,the Sunset Terrace . 17 public housing community would be redeveloped into a mixed-use,mixed-income 18 residential and commercial space with public amenities.An open space/park would be 19 centered in this redevelopment,which has been identified as a potenfial location for a sub- : 20 regional stormwater facility.To maximize the open space area,most of this sub-regional 21 facility will be underground. It is proposed to be located at the northwest corner of the open 22 space,which allows public usage of most of the park space and allows maintenance access ' 23 from NE lOth Street 24 The Sunset Community Investrnent Strategy identified three additional potential locations ' 25 for sub-regional stormwater facilities in the John's Creek Basin: at Hillcrest Terrace,on a 26 vacant lot north of Sunset Park,and in Highland Park Through analysis of the potential ' 27 land use changes and redevelopment under the Preferred Alternative of the Planned Action ' 28 Final EIS,it was determined that up to 2.6 acres of the 5.7 acres of additional effective 29 impervious surface area could be created at full build-out conditions. It was determined that ' 30 a single facility could meet the flow control needs of this new impervious area.The 31 construction of the sub-regional facility can be part of the redevelopment and optimize the 32 construction cost.This facility can provide flow control protection and water quality 33 treatment in the basin in advance of the rest of the redevelopment 34 A sub-regional facility will provide stormwater infiltration as practical to control the runoff 35 volume and reduce potential pollutants.Pre-treatment will be provided prior to infiltration 36 via rain gardens. Stormwater runoff volume that cannot be infiltrated will be detained in an 37 underground vault and will be released matching existing flow conditions. 38 501� 39 The soil at the proposed sub-regional facility site is at the boundary of glacial till and 40 advance outwash soil. Purther soil exploration is needed for the final design of the facility to SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDR4Ff.DOCX 19 ORDINANCE NO. 5611 4 PROPOSED PROJECTS 1 determine the soil properties onsite. The sub-regional facility will be sized using low 2 infiltration rates typical of till soil conditions. 3 Tributary and Land Cover 4 The tributary area draining to this facility could be from Sunset Terrace,Sunset Boulevard 5 from 10th Street to Monroe Avenue,Glennwood Avenue,and Sunset Lane or some private 6 parcels along Sunset Lane.To maximize the water quality treatrnent benefit of pretreatrnent 7 and infiltration,it is preferable to convey stormwater runoff from public roadways(e.g., S Sunset Boulevard),which has the highest pollutant loading.The actual contributing area 9 will be determined based on the redevelopment of NE 10th Street and Sunset Boulevard in 10 the future. 11 Facility Design ' 12 The facility is preliminarily sized to provide flow conixol for the expected 2.6 acres of 13 increase in impervious surface area related to the redevelopment.Table 1 summarizes the 14 targeted design level for flow control for the subregional facility and Green Connections 15 projects.The stormwater runoff from Sunset Boulevard will drain to NE 10th Street,then ' 16 flow to a series of rain gardens with a total bottom area of 3,100 square feet on the north side 17 of the proposed Sunset Terrace Park.The rain gardens would provide pretreatrnent for the 18 water flowing through the bioretention soil and vegetation.Perforated drains pipes beneath 19 the rain garden would collect treated runoff and distribute the water to an infiltration 20 gallery south of the rain garden. It would have a bottom area of 12,500 square feet to 21 increase the available area for infiltrafion into the native soil.Flows that exceed the 22 infiltration capacity of the rain garden and infiltration gallery would overflow into a 23 conventional storm drain system,and into an underground detention vault west of the 24 infiltration gallery.The detention vault is preliminarily sized to have an active storage ' 25 volume of 0.38 acre-feet.The vault would control the release rate of the water,matching the ' 26 peak flow rate for the existing conditions.Figure 7 shows the conceptual layout of the sub- 27 regional facility and Appendix A shows the suminary of analysis of the expected new 28 effective impervious area.Appendix D1 summarizes the preliminary sizuzg calculations 29 using the Western Washington Hydrology Model(WWHM v.3.0). 30 Upon further investigation of the native soil infiltration capacity,design modifications could 31 include either increasing tlle size of the detention vault and eliminating the infiltration 32 gallery(if infiltrafion is largely infeasible) or decreasing the size of the detention vault(if the 33 infiltration rate is greater than the preliminary sizing assumption of 0.25 inch/hour). 34 The intent of the subsurface infiltration gallery is to preserve open space for active space 35 and recreation. The rain garden is proposed to be located in the northwest corner of the 36 open space to provide a landscaped buffer between the open space and the street. Figure 7 37 shows the conceptual layout of the facility. The stormwater runoff could be conveyed from 38 storm drains on Sunset Lane or S 10th Street. The discharge from the detention vault will 39 connect to an existing storm draul on Sunset Boulevard at Harrington Avenue S by a new 40 storm drain under the vacated Harrington Avenue. 41 20 SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDR4Ff.DOCX - ORDINANCE NO. 5611 4 PROPOSED PROJECTS TABLE 1 Targeted Level of Flow Control Mitigation by Public Infrastructure Projects Title Targeted Flow Reduction of Flow Net Effective impervious Control BMPs or Facility Area Reduction(ac) 1 Sunset Terrace Regional 100% 2.6 Facility 2 Harrington Avenue NE 30% 0.6 Green Connection 3 Jefferson Avenue NE 30% 0.5 Green Connection 4 Alley Green Connections 50% 0.5 (Harrington,Jefferson ' Alleys) 5 Collector Arterial Green 20% 1.5 Connection (Edmonds Avenue NE and NE 12'h Street) Total 5.7 Note: Net effective impervious area reduction includes new/reduced impervious area to construct proposed section (e.g., new sidewalks)and effective performance of fiow control BMPs within the Green Connection project. 1 2 Conveyance Improvements 3 The future development is expected to uicrease effective impervious surface area.A 4 schematic storm drain network model was developed to estimate the design peak flow for 5 plannuzg purposes.This model uses Santa Barbara Unit Hydrograph methodology with 6 Type 1A storm rainfall distribution using StormShed2G com�uting software.Seven 7 conveyance system improvements are proposed. The conveyance improvements are shown 8 in Figure 8 and are classified based on the condition of the existing storm drain system and 9 the concurrence with other transportation improvements below.The peak flow rate 10 summary of the sub-tributary area is included in Appendix B. Conveyance capacity 11 calculafions using SBUH methodology in the StormShedTM hydraulic model are provided 12 in Appendix D2. 1s New Storm Drains with Green Connections 14 Harrington Avenue NE and Jefferson Avenue NE currenfly do not have a storm drain 15 system. With the street unprovements for the proposed Green Co�uiections,a new storm 16 drain will be required. The conveyance system improvements in Harrington Avenue NE are 17 separated to match the same segments for the Green Connection street improvements. It is 18 assumed that the storm drain conveyance improvements needed with the sfreet 19 improvements would occur concurrenfly with the proposed Green Connections 20 improvements to decrease costs. SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFT.DOCX 21 ORDINANCE NO. 5611 �,��`� � � �� .�� . 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'G ",� ��',�,�,' .. �p �:��5¢� , �� v �`', m' - s � �� . � ` 'i^ •�£ �£ ,�. �� -A '� ,5��'R" �.p �=d. �� Q'...T� � .^�'��A�•�.'F � y � ., ..:�. , „ ✓-� : „�° , ��. � Source:AKC,03 29- � . ,;, - , . .. �, , ' ,�; ::�-,: Figure 7 �� Sub-Regional Flow Control Facility City of Renton Sunset Area Master Drainage Plan ORDINANCE NO. 5611 �Sunset StudyArea � ' L�Renton Parcels Stormwater Comeyance System � Proposed New Storm Drain �Proposed to Replace � Proposed to Abandon � _ � °Existing Storm Drain N � � ;`'� A 3i � 6�� ,2�� Feet 1 �, To May Creek Via Edmonds Ave NE � Fiows:4.9 CFS � f � � 18.2 CFS � DIA=24" v��`' ,._ � � 4s.o cFs 4.71 CFS �`' ' � € °»� � DIA=30" DIA=18" �� , � � ° ' ,;.. .,� �,. ��.�. , ° �� To lohns Creek Via j �'~-�•� Sunset Blvd 54.3 CFS <°'� ` � ' Flows:91.4 CFS DIA=30" � ^�g � .,� ;, � � ,, � �`"`� � , .. 8.9 CFS �, � ,. � �,� DIA=18 � � 33.1 CFS �� DIA=24" £ �; � "� ' ��" €� � ',� � �...,."M � . � � ; ..;.�:� � �� .., ' _� 3 � d � � To Johns Creek Via € - � p, ! NE 9th PI @ f L..__. � Flows:23.4 CFS ' " � " � € 6 �� , � € � «. � � � � � � . � � � i � � � ° � � o �. � �r �.v "�.. . �.,,,. ..__.... � �'"� � NOTES: " � NE 7 h StCreek Via i � �� . � N� s 1 FLOWS INDICATED ARE FOR THE �� 25-YEAR DESIGN EVENT ONLY. � � Flows:Not Analyzed I o � _ "� � � �"�""'� � �� 2 PIPE DIAMETERS SHOWN INDICATED �i h S�u�ce:AKC;0 1 � REQUIRED SIZE UNDER PROPOSED CONDITIONS. � �`"" Figure 8 ��,,, STORMWATER DRAINAGE CONVEYANCE SYSTEM City of Renton Sunset Area Master Drainage Plan ORDINANCE NO. 5611 4 PROPOSED PROJECTS 1 Replace Storm Drains with Green Connections 2 The Edmonds Avenue NE and NE 12th Street storm drain systems are undersized for both 3 existing and future redevelopment conditions. The proposed conveyance system 4 improvements are separated to match the segments for Green Connections.It is assumed ' 5 that these storm drain conveyance improvements needed for the street improvements ' 6 would occur concurrently with the proposed the Green Connections improvements to ' 7 decrease costs. ' s Replace Existing Storm Drain without Street Improvement 9 The existing storm drain system of Kirkland Avenue NE is undersized for existing and 10 future development conditions. No Green Connections or street improvements are 11 proposed for Kirkland Avenue NE,and therefore these improvements are assumed to occur 12 independently. ls New Storm Drain without Street Improvement 14 Glennwood Avenue NE currently has no conveyance system and will require a new storm 15 drain system to serve as a connection for future redeveloped properties. No Green 16 Connections or street improvements are proposed for Glenwood Avenue NE,and therefore 17 these improvements are assumed to occur independently. Zs Replace Existing Storm Drain with Street Improvement 19 Sunset Boulevard is a major east-west arterial connecting the Sunset Terrace neighborhood, 20 the Renton Highland area,and Interstate I-405.As part of redevelopment plan for Sunset 21 Terrace,improvements on Sunset Boulevard are proposed to provide the Complete Street ' 22 section requirements,including bicycle lanes,planter strips,and sidewalks. ' 23 The current GIS map shows that a portion of the eastbound Sunset Boulevard storm drain ' 24 system will leave the street right-of-way and go underneath several private properties near 25 NE 9th Street and Ferndale Circle NE.Then this system will continue west under NE 9th 26 Place down to the valley.With the improvements on Sunset Boulevard,it is preferable to 27 reroute these conveya�ice system back and remain along the Sunset Boulevard. A field 28 investigation is needed to confirm the location and routing of this storm drain.Further ' 29 analysis is needed to verify the capacity of the storm drain downstream of the study area. 30 City of Renton staff has indicated that the storm drain system at NE 9th Place may have 31 capacity issues further downstream.Further engineering analysis is needed to determine 32 whether to continue to route the stormwater runoff from Sunset Boulevard to this storm 33 drain system. 24 SUNSETAREA_SU RFACEWATER_MASTERPLAN_0421_COUNCI LREVIEWDR4fT.DOCX - - ORDINANCE N0. 5611 1 5 Project Implementation 2 Consistent with existing and proposed goals and policies,two priority levels for surface 3 water improvements have been identified in order to prioritize projects presented in this 4 plan. Conceptual project solutions were developed for other problems based on the Sunset 5 Community Investrnent Strategy(City of Renton 2009) and other information provided by 6 the City.The development of a conceptual project solution began with a review of the study 7 area to determine if property is available for a detention facility and the need to upsize the 8 existing pipe systems or the need to add a new pipe system where there is no existing 9 system.Pipe capacity was.analyzed with a schematic hydrological and hydraulic model 10 using Santa Barber Unit Hydrograph method and hydraulic grade line analysis. 11 Project implementation requires future engineering analysis,soil exploration,and 12 engineering design to confirm all assumptions and design information. For the conveyance 13 system,the design will provide protectioll at the level of a 25-year storm.The flow control 14 facilities will maximize infiltration where feasible and control release rates to match the 2-, 15 10-,and 100-year runoff rates for existing pre-development conditions. 16 Table 2 and Table 3 show the projects that are categorized for priority levell and level 2. ' 17 The implementation of each project depends on the availability of City funding,the possible ' 18 developer contribution,and the pace and scale of redevelopment happening in this area in ' 19 the future. ' TABLE 2 Priority Level 1 Projects and Costs ' Title Description Opinion of Cost ' 1 Sunset Terrace Regional Sunset Terrace Regional Facilities induding $722,700.00 Facility bioretention swale, infiltration gallery,and detention vault 2aa Harrington Avenue NE Segment 1 froml6th Street to 12th Street. $602,250.00 Green Connection- Construct rain gardens on the sides of the street. Segment 1 2ba Harrington Avenue NE Segment 2 from NE 12th Street to NE 10th $328,500.00 Green Connection- Street.Construct rain gardens on the sides of the Segment 2 street 2ca Harrington Avenue NE Segment 3 from Sunset Bivd.to NE 9th Street. $459,900.00 Green Connection- Construct rain garden on the sides of the street. Segment 3 Total $2,113,350.00 Note:The cost represents the construction cost in March 2011dollars. a Cost only includes the low impact development features;the storm drain conveyance cost is part of the street improvements. SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFf.DOCX 25 ORDINANCE NO. 5611 5 PROJECTIMPLEMENTATION TABLE 3 Priority Level 2 Projects and Costs Title Description Opinion of Cost 3 Glennwood Avenue Construct new storm drainage pipes. $328,500.00 NE Storm Drainage ' Conveyance Improvements ' 4a NE 12th Street Green From Jefferson Avenue NE to Edmunds $646,050.00 Connection Avenue NE. Construct rain garden on the sides of the street. 5aa Edmunds Avenue NE From NE 12th Street to NE 10th Place. $372,300.00 Green Connection Construct rain garden on the sides of the Street. 5ba Edmunds Avenue NE From NE 10th Place to NE 6th Place.Construct $755,550.00 Green Connection rain garden on the sides of the Street. 6 Kirkland Avenue NE Upsize existing storm drainage pipes $602,250.00 Storm Drainage Conveyance Improvements 7 Jefferson Avenue NE From NE 16th Street to NE 12th Street. $328,250.00 Green Connection Construct rain garden on the sides of the Street. Total $3,032,900.00 Note:The cost represents the construction cost in March 2011 dollars. a Cost only include the fow impact development features;the storm drain conveyance cost is part of the street improvements. 1 Project Planning Cost Estimate 2 A conceptual estimate of construction cost has been prepared for these new projects.These 3 costs are shown in Table 1 for Priority Level land Table 2 for Priority Leve12.The cost tables 4 in this chapter present the construction cost estimates in March 2011 dollars.The cost for the 5 Green Connection is only included the LID features. The cost for the conveyance system is 6 part of the roadway improvement cost,when one is proposed.However,if street 7 improvements are not proposed,the new or replaced conveyance cost would be included in 8 the estimates.The cost estiinates do not include design engineering and construction plans 9 development,the purchase of right-of-way or construction easement,City administration, 10 and construction management. The breakdown of the summary of cost is included in 11 Appendix C. 12 These improvements would be needed within the 2011-2030 time frame.The project costs 13 and funding sources for these projects are identified in the Sunset Area Community Capital 14 Facilities Plan found wifllin the City's Capital Facilities Element.Funding for the surface 15 water master plan improvements will come through a variety of sources and means. Public 16 funding will be sought through grant programs,dedication of funds through City Council 17 or partial funding through available utility fees. Where public funding carulot be secured, 18 the remaining funding will be provided by future development through a combination of 26 SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFf.DOCX ' ORDINANCE NO. 5611 5 PROJECTIMPLEMENTATION 1 frontage improvernents and fee assessments under various structures depending on 2 applicable city codes,implementafion schedule and rate of redevelopment such as collection 3 of impact fees,fee in lieu of mitigation and special assessment districts. SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDR4FT.DOCX 27 ORDINANCE N0. 5611 1 6 References 2 City of Renton. 2010a.Amendments to King County Su�face Wate��Design Manual. Available at: 3 http://rentonwa. og v/u�loadedFiles/Government/PW/UTILITIES/Surface Water/Cit� 4 20Amendments%20to%20the%20King%20County%20Surface%20Water%20Design%20Man ' 5 ual.pdf.February 2010. 6 City of Renton. 2010b. Draft Sunset Area Community Planned Action NEPA/SEPA 7 Environmental Impact Statement.Prepared for City of Renton and Renton Housing Authority. S Available at: 9 htt�://rentonwa.�ov/uploadedFiles/Business/CED/planning/2010/Vo11_SunsetArea- 10 PA_DraftEIS.pdf. December 2010. 11 City of Renton.2009. Sunset Community Investment Strategy. Available at: , 12 http://rentonwa.gov/uploadedFiles/Business/EDNSP/planiiing/091123-SunsetCIG 13 FinalReport-Adopted-lowres.�df.Adopted November 23,2009. 14 City of Renton and King County.2001.Mcty G�eek Basin Action Plan. Apri12001. 15 Foster Wheeler Environmental Corporation. 1995.May Creek Current and Future Conditions 16 Report.August. Washington State Departrnent of Ecology. 2009. ; 17 King County.2009. King County, Washington, Su�fctce Water Design Manual.King County 18 Department of Natural Resources and Parks.Available at: 19 http:/�,your.kingcounty_ ov� /dnr�/librar�/water-and-land/stormwater/surface-water- 20 design-manual/SWDM-2009.pdf.January 9,2009. 21 Washington Department of Ecology. 2005. Stormwater Management Manual for Western 22 Washington.Available at: 23 htt�://www.ecy.wa.gov/�rograms/wq/stormwater/manual.html.April 2005. SUNSETAREA_SURFACEWATER_MASTERPLAN_0421_COUNCILREVIEWDRAFI.DOCX 29 - ORDINANCE NO. 5611 Appendix A - Summary of Expected New Effective Impervious Surface Area ORDINANCE NO. 5611 Table A-i. Existing Land Cover Summary Total ' Total Impervious Total Total Total Area Area Pervious PGISa Untreated Effective ' (acres) (acres) Area(acres) (acres) PGISa(acres) Impervious PlannedActionStudy 255.82 161.17 94.65 92.86 88.10 16L17 Area Potential Sunset 12.64 4.73 7.91 1.83 1.83 4.73 Terrace Redevelopment Subareab ' Total 268.46 165.90 102.56 94.69 89.93 165.90 aPGIS=pollution-generating impervious area bThe Sunset Terrace Redevelopment Subarea is slightly smaller than the subarea in the DEIS due to the adjusted boundary at Sunset Boulevard and Harrington Ave. Table A-2. Land Cover Summary-Preferred Alternative Total Total Total Impervious Pervious Total Total Effective Area Area Area PGIS Untreated Impervious (acres) (acres) [acres) (acres) PGIS(acres) (acres) Planned Action Study Area 255.82 174.40 81.42 76.44 46.26 165.41 ' Potential Sunset ' Terrace � Redevelopment Subareaa 12.64 6.1 6.54 1.7 0 3.66 ' Total 268.46 180.50 87.96 78.14 46.26 169.07 Table A-3.Change in Land Cover Summary-Preferred Alternative Net Change in Net Change in Net Change in Net Change in Effective Impervious PGIS Area Untreated PGIS Impervious Area Project Area Area(acres) (acres) (acres) (acres)a Planned Action Study 13.23 (8.2%) -16.41(-17.7%) -41.84(-47.5%) 4.24(2.6%)e Area Potential Sunset Terrace 1.37(29.0%) -0.13 (-7.1%) -1.83 (-100%) -1.07(-22.6%)b Redevelopment Subarea Total 14.60 _16.54(-18.4%) -43.67 (-48.6%) 3.17(1.9%) (16.2%) Note:All areas are expressed relative to existing conditions. See Section 3.3 of the Draft Environmental Impact Statement(Table 3.3-1)for a summary of existing conditions. a Impeivious area not directly connected to a stream or drainage system. b The net change in effective impervious area within the Johns Creek Basin,excluding mitigation through regional detention,is equal to 2.63 acres.Within the May Creek Basin,the net change is equal to 0.54 acre. ORDINANCE NO. 5611 Appendix B - Summary of Peak Flow Rates for the Study Area ORDINANCE NO. 5611 Table B-1.The Existing Conditions Area Breakdown for the Sub-Tributary Area Existin Condition Im ervious Pervious Lawn Sub- Roofa Total Basin Road outwash Roof till Im ervious Outwash Tiil Forest Total Area Area ac ac ac ac ac ac ac ac 1 6.4 7.31 16.95 30.66 6.63 6.39 0.80 44,48 2 5.5 2.46 - 7.96 1.96 - - 9.92 3 1.91 0.34 0.65 2.90 6.51 12.31 - 21.72 4 4.92 2.12 4.25 11.29 2.88 4.25 - 18.42 5 0.92 0 1.71 2.63 5.41 1.25 - 9.29 6 3.77 0 11.67 15.44 - 4.46 - 19.90 7 2.47 0 9.22 11.69 - 5.21 - 16.90 9 8.79 0 17.88 26.67 0.02 6.03 - 32.72 10 1.39 14.58 14.04 30.01 19.77 2.91 - 52.69 11 5.58 4.78 0.92 11.28 1.37 0.55 - 13.20 12 2.15 10.83 0.39 13.37 4.66 - - 18.03 13 12.30 - 4.3 16.60 16.60 Total 56.10 42.42 81.98 180.50 49.21 43.34 0.80 273.85 a. The roof runoff is modeled as hydrological soil group B grass to estimate potential low range under existing conditions reflectin otential roofto disconnection. ORDINANCE NO. 5611 Table B-2.The Proposed Conditions Area Breakdown for the Sub-Tributary Area Preferred Pro osed Condition Im ervious Pervious Lawn Sub- Roof Total Basin Road outwash Roof till Im ervious HSGB HSGC Forest Total Area Area ac ac ac ac ac ac ac ac 1 6.40 7.85 17.36 31.61 6.09 5.98 0.80 44.48 2 5.50 2.74 - 8.24 1.67 - - 9.91 3 1.91 0.34 0.65 2.90 6.51 12.305 - 21.72 4 4.92 2.86 5.1 12.88 2.14 3.4 - 18.42 5 0.92 3.55 2.37 6.84 1.86 0.59 9.29 6 3.77 0.00 13.9 17.67 - 2.23 - 19.90 7 2.47 O.DO 9.45 11.92 - 4.98 - 16.90 9 8.79 0.00 18.24 27.03 0.02 5.67 - 32.72 10.0 1.39 15.4 13.7 30.4 18.99 3.26 - 52.69 11 5.58 5.52 1.31 12.41 0.63 0.16 - 13.20 12 2.14 13.17 0.37 15.68 2.32 0.03 - 18.03 13 12.30 - 4.3 16.60 16.60 Total 56.09 51.39 86.74 194.22 40.23 38.60 0.80 273.85 ORDINANCE NO. 5611 , Drainage Areas � _� �� `�, � ��:�` ;-�, i ��` � r QSunset Study Area �`"" "�" � ' �a � "`�� i �Developed � �� `� �,� ' � � i � 4 y q f �� Excluded € 0 ��` � ^ Redevelopable � �� /acant cd' �� Roads&Basins Outside Project Boundary � ' " a C1 CV � �, ��` � �R-10 � ��t, �� R-14 � R-8 �RM-F �Rentoo Parcels � ��„ N � � ;,. a�,� � � A �t� �_ �� ,� �., . �� o soo i,zoo � ,� - �� . �,. � �� Feet .x"� � . ,. �,�r�;_ £ �� . i ��`�. � � - � � � ,� � �'�,�, : . � . ._ .. € £ , � � ..-�v^`^ . . . � '� ,tF. � . ..� r;�- ' � . e .-�f. r^ ,c�`� � �, 'ti`�- �„.� .. � " �:x.�,. � p,/� �' �� r:. � a e � � � , h � v � � '�,.',�.�. «.,t,:5 . � :°� � �� _< < <� t""'. � � _ a/ �. � � �� . � � r � �� i „' n € ;e : $ � � � ' � ..g j, !,-nl,j,K � �.. 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Nµ� � 't.� . �,. ,�k� �� 3 � • ��y� �1 j � � �" �� t��✓"' .��MS`4 �# N �h i.�. y Y�� .-. � �rt � .. � � . � � � �� ; ` ��`�'�{�;� � t � -�` � � } °„ � t"",-� ' �'y �`~ �. �� .� � �� g ,�_�� J"" ,1�t"� ��'�,. ..�'�� . _ `}."'yt`t 4��'� „ a�'�#"�-- £ ��;�� a`a 1 � � u i �� .�' � �.,.� . �� 'i � � ��,,,��,,� � V �'`�3 � �� ,�; a °} � �-�, ,�� ,, � � i.� � a t � < � • .;�'* `� �`�� ` ,�---[� � '� ��", ,,, � a�ource:AKC - - 1 *. ` °�- �� °��,.'�`°�} �i '� € � �` �� .�� i � ,� "� . N�� . '+», �b.`,�' °'"�., p.' �'k�'".� �:• �� i�� ..z,�«.� Figure 01 � STORMWATER DRAINAGE BASINS City of Renton Sunset Area Master Drainage Plan ORDINANCE NO. 5611 The stormwater runoff peak flow rate is calculated using Santa Barbara Unit Hydrograph (SBUH) (TR55) methodology and it was computed by the Stormshed2G program. Table B-3.Existing Conditions Stormwater Runoff Peak Flow Rate Stormwater Runoff Peak Flow Rate Sub- Desi n Event SBUH Basin Area 2- ear 10- ear 25- ear 100- ear 1 8.4 14.7 18.1 21.5 2 2.3 4.0 4.9 5.9 3 2.2 4.9 6.4 7.9 4 3.1 5.5 6.8 8.1 5 1.5 3.1 3.9 4.8 ' 6 4.4 7.1 8.5 9.9 7 4.2 6.9 8.3 9 J 9 9.5 15.2 18.1 21 A 10 14.0 242 29.6 35.1 11 2.4 4.3 5.3 6.4 1 2 4.1 6.7 8.1 9.4 ' 13 6.0 9.3 10.9 12.5 Table B-4.Proposed Conditions Stormwater Runoff Peak Flow Rate Stormwater Runoff Peak Flow Rate ' Sub- Desi n Event(SBUH) Basin Area 2- ear 10- ear 25- ear 100- ear 1 10.4 17.2 20.7 242 ' 2 3.2 5.1 6.0 7.0 3 2.3 5.0 6.5 8.0 4 3.8 6.4 7.7 9.0 5 2.8 4.6 5.6 6.5 6 4.8 7.5 8.9 10.3 7 4.2 6.9 8.3 9.7 9 9.6 15.3 18.2 21.1 10 14.2 24.4 29.9 35.4 11 3.9 6.1 7.2 8.3 12 4.7 7.4 8.8 102 13 6.0 9.3 10.9 12.5 ORDINANCE NO. 5611 Appendix C - Opinion of Cost ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 REGIONAL FACILITIES PROJECT NO.:408314 ORDER OF MAGNITUDE ESTIMATE '' "TOTAL UNIT TOTAL 'DESCRIPTION '' ' QTY UNIT 'COST COST Bioretention Swale(vegetated) Excavation&Waste 1,421 CY $20.00 $28,420 Compost 350 CY $30.00 $10,500 Seeding 654 SY $3.76 $2,458 Misc.Detail Allowance 1 LS $4,137.80 $4,138 Bioretention Swale Subtotal $45,576 Infiltretion Gallery Excavation 3,100 CY $10.00 $31,000 Waste 694 CY $10.00 $6,940 Native Backfill 2,406 CY $15.00 $36,09D Drain Rock 694 CY $30.00 $20,820 Seeding 1,390 SY $3.76 $5,221 Geotextile(wrap around drain rock x2) 2,780 SY $2.00 $5,560 6"Perforated Pipe,4'O.C.(32 ea at 100') 3,200 LF $3.00 $9,600 Cleanout(32 ea,per 6"pipe) 32 EA $200.00 $6,400 8irdcage Overflow Structure(CB Type 2) t EA $1,000.00 $1,000 Misc.Detail Allowance 1 LS $12,263.07 $12,263 Infiitretion Vault Subtotal $134,894 Detention Vault Dete�tion Vault(135'x20'x7.5') 1 EA $180,000.00 $180,000 Excavation 1,775 CY $10.00 $17,750 Waste(Vautt Size,135'x20'x7.5') 750 CY $10.00 $7,500 Native Backfill 1,025 CY $15.00 $15,375 Seeding 690 CY $3.76 $2,592 CSBC(6"layer) 74 CY $35.00 $2,590 Detention Vault ManHole Access 3 EA $1,000.00 $3,000 ' Flow Control Structure,at south end of Det.Vault 1 EA $3,000.00 $3,000 12"CPEP Storm Drain 420 LF $49.69 $20,868 Manhole t EA $2,000.00 $2,000 Manhole(Tie into Existing SD) 1 EA $2,500.00 $2,500 Misc.Detail Allowance t LS $25,717.45 $25,717 Detention Vault Subtotal $282,892 SUBTOTAL $463,302 MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $46,330 SUBTOTAL $509,632 CONTINGENCY 30.0% $152,890 CONSTRUCTION TOTAL(ROUNDED) $660,000 SALES TAX 9.5% $62,700 CONSTRUCTION TOTAL(ROUNDED) $722,700 Low range -30.0% $510,000 High Range 50.0% $1,080,000 NOTE: The above cost opinion is in March 2011 dollars and does not include future escalation, financial or O&M costs. The cost opinion shown has been prepared for guidance in project evaluation from the information available at the time of preparation. The final costs of the project will depend on actual labor and material costs,actual site conditions,productivity,competitive market conditions,final project scope,final schedule and other variable factors. As a result,the final project costs will vary from those presented above. Because of these factors,funding needs must be carefulty reviewed prior to making specific financial decisions or establishing final budgets. project scope,final schedule and other variable factors. As a result,the final project costs will vary from those presented above. Because of these factors,funding needs must be carefully reviewed prior to making specific financial decisions or establishing final budgets. ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 HARRINGTON AVE GREEN CONNECTION PROJECT NO.:408314 ORDER OF MAGNITUDE ESTIMATE ' TOTAL I UNIT I TOTAL ' DESCRIPTION 'QTY UNIT' ''COST COST HARRINGTON GREEN CONNECTION TOTAL LENGTH 1,791 LF From 16th Street to 12th Street Section 1:Rain Garden on West Side of Harrington 1,279 LF 12-ft Rain Garden Strip 15,348 SF $18.86 $289,446 Section 1 Subtotal $289,446 Section 2:Rain Garden Both Sides 205 LF 12-ft Rain Garden Strip(x2) 4,920 SF $18.86 $92,786 Section 2 Subtotal $92,786 SUBTOTAL $382,231 MOBILIZATION,BONDS,WSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $38,223 SUBTOTAL $420,454 CONTINGENCY 30.0% $126,136 CONSTRUCTION TOTAL(ROUNDED) $550,000 SALES TAX 9.5% $52,250 CONSTRUCTION TOTAL(ROUNDED) $602,250 Low range -30.0% $420,000 High Range 50.0% $900,000 NOTE: The above cost opinion is in March 2011 dollars and does not include future escalation, financial or O&M costs. ' The cost opinion shown has been prepared for guidance in project evaluation from the information available at the time of preparation. The final costs of the project will depend on actual labor and material costs,actual site conditions,productivity,competitive market conditions,final project scope,final schedule and other variable factors. As a result,the final project costs will vary from those presented above. Because of these factors,funding needs must be carefully reviewed prior to making specific financial decisions or establishing final budgets. ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 HARRINGTON AVE GREEN CONNECTION PROJECT NO.:408314 ORDER OF MAGNITUDE ESTIMATE iOTAL - ' UNIT" 'TOTAL' '' DESCRIPTION: �TY ' UNIT " COST ' ''COST '' HARRINGTON GREEN CONNECTION TOTAL LENGTH 980 LF From 12th Street tol0th Street Section 1:Rain Garden on West Side of Harrington 700 LF 12-ft Rain Garde�Strip 8,400 SF $18.86 $158,414 Section 1 Subtotal $158,414 Section 2:Rain Garden Both Sides 112 LF 12-ft Rain Garden Strip(x2) 2,688 SF $18.86 $50,696 Section 2 Subtotal $5Q696 Section 3 Subtotal $0 SUBTOTAL $209,110 MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $20,911 SUBTOTAL $230,021 CONTINGENCY 30.0% $69,006 CONSTRUCTION TOTAL(ROUNDED) $300,000 SALES TAX 9.5% $28,500 CONSTRUCTION TOTAL(ROUNDED) $328,500 Low range -30.0% $230,000 High Range 50.0% $490,000 NOTE: The above cost opinion is in March 2011 doilars and does not include future escalation, financial or O&M costs. The cost opinion shown has been prepared for guidance in project evaluation from the information availabie at the time of preparation. The final costs of the project will depend on actual labor and material costs,actual site conditions,productivity,competitive market conditions,final project scope,finai schedule and other variable factors. As a result,ihe final project costs will vary ' from those presented above. Because of these factors,funding needs must be carefuily reviewed prior to making specific financial decisions or establishing finai budgets. ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 HARRINGTON AVE GREEN CONNECTION PROJECT NO.:408314 ' ORDER OF MAGNITUDE ESTIMATE TOTAL ' UNIT" 'TOTAL - DESCRIPTIONI ' : QTY 'UNIT COST ' COST HARRINGTON GREEN CONNECTION TOTAL LENGTH 1,371 LF From Sunset Blvd to 9th Street Section 1:Rain Garden on West Side of Harrington 979 LF 12-ft Rain Garden Strip 11,748 SF $18.86 $221,554 ' Section 1 Subtotal $221,554 Section 2:Rain Garden Both Sides 157 LF 12-ft Rain Garden Strip(x2) 3,768 SF $18.86 $71,060 Section 2 Subtotal $71,060 SUBTOTAL $292,614 MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $29,261 SUBTOTAL $321,875 CONTINGENCY 30.0% $96,563 CONSTRUCTION TOTAL(ROUNDED) $420,000 SALES TAX 9.5% $39,900 CONSTRUCTION TOTAL(ROUNDED) $459,900 Low range -30.0% $320,000 High Range 50.0% $690,000 NOTE: The above cast opinion is in March 2011 dollars and does not include future escalation, financial or O&M costs. The cost opinion shown has been prepared for guidance in project evaluation from the information available at the time of preparation. The final costs of the project will depend on actual labor and materiai costs,actual site conditions,productivity,competitive market conditions,final project scope,final schedule and other variable factors. As a result,the final project costs will vary from those presented above. Because of these factors,funding needs must be carefully reviewed prior to making specific financial decisions or estabiishing final budgets. ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 GLENNWOOD AVE STORM DRAIN PROJECT NO.:408314 ORDER OF MAGNITUDE ESTIMATE ESTIMATE BY: D Hedglin ' REVIEW BY: TOTAL 'UNIT 'TOTAL ' DESCRIPTION �TY'- UNIT COST COST ' GLENNWOOD AVENUE 16TH ST TO 12TH ST 1,000 LF ' Remove Curb,Gutter&Sidewalk 1,000 LF $15.00 $15,OD0 Replace Curb,Gutter&Sidewalk 1,000 LF $40.00 $40,000 2-in ACP Overlay 3,333 SY $9.95 $33,167 ' 12-in CPEP Storm Drain(1 total) 1,000 LF $81.07 $81,074 12-in CPEP Storm Drain Lateral 150 LF $81.07 $12,161 Catch Basins(at 200-ft intervals both sides) 10 EA $800.00 $8,000 Misc.Detail Ailowance 1 LS $18,94023 $18,940 Subtotal 1 $208,343 SUBTOTAL $208,343 MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $20,834 SUBTOTAL $229,177 CONTINGENCY 30.0% $68,753 CONSTRUCTION TOTA�(ROUNDED) $300,000 SALES TAX 9.5% $28,500 CONSTRUCTION TOTAL(ROUNDED) $328,500 Low range -30.0% $230,000 High Range 50.0% $490,000 NOTE: The above cost opinion is in March 2011 dollars and does not include future escalation, financial or O&M costs. The cost opinion shown has been prepared for guidance in project evaluation from the information availabie at the time of preparation. The final costs of the project will depend on actual labor and material costs,actual site conditions,productivity,competitive market conditions,final project scope,final schedule and other variable factors. As a result,the final project costs will vary from those presented above. Because of these factors,funding needs must be carefully reviewed prior to making specific financiai decisions or establishing final budgets. ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 12TH STREET GREEN CONNECTION PROJECT NO.:408314 ORDER OF MAGNITUDE ESTIMATE TOTAL UNIT' '' TOTAL'' ' DESCRIPTION' ' QTY ' UNIT COSTI I' COST " 12TH STREET SEG.2 TOTAL LENGTH 1,370 LF 2 Lanes Section, Jefferson-Harrington 620 LF 16-ft Rain Garden Strip 9,920 SF $18.86 $187,080 Subtotal 1 $187,080 2 Lanes Section, Harrington-Edmonds 750 LF 16-ft Rain Garde�Strip 12,000 SF - $18.86 $226,306 Subtotal 2 $226,306 SUBTOTAL $413,386 MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $41,339 SUBTOTAL $454,725 CONTINGENCY 30.0% $136,417 CONSTRUCTION TOTAL(ROUNDED) $590,000 SALES TAX 9.5% $56,050 CONSTRUCTION TOTAL(ROUNDED) $646,050 Low renge -30.0% $450,000 High Range 50.0% $970,000 NOTE: The above cost opinion is in March 2011 dollars and does not include future escalation, financial or O&M costs. The cost opinion shown has been prepared for guidance in project evaluation from the information available at the time of preparation. The final costs of the project wiil depend on actual ' labor and material costs,actual site conditions,productivity,competitive market conditions,final ' project scope,finai schedule and other variable factors. As a result,the final project costs will vary from those presented above. Because of these factors,funding needs must be carefully reviewed prior to making specific financial decisions or establishing final budgets. ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 EDMONDS AVE GREEN CONNECTION PROJECT NO.:408314 ORDER OF MAGNITUDE ESTIMATE TOTAL UNIT ' ' 'TOTAL'' 'DESCRIPI'ION QTY ' UNIT COST COST '' EDMONDS SEG.3 TOTAL LENGTH 1,400 LF 3 Lanes Section, 12th-Sunset Blvd 850 LF 9-ft Rain Garden Strip 7,650 SF $18.86 $144,270 Subtotal 1 $144,270 3 Lanes Section,Sunset Blvd-10th pl 550 LF 9-ft Rain Garden Strip 4,950 SF $18.86 $93,351 Subtotal 2 $93,351 SUBTOTAL $237,622 MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $23,762 SU BTOTAL $261,384 CONTINGENCY 30.0% $78,415 CONSTRUCTION TOTAL(ROUNDED) $340,000 SALES TAX 9.5% $32,300 CONSTRUCTION TOTAL(ROUNDED) $372,300 Low range -30.0% $260,000 High Range 50.0% $560,000 NOTE: The above cost opinion is in March 2011 dollars and does not indude future escalation, financial or O&M costs. ' The cost opinion shown has been prepared for guidance in project evaluation from the information available at the time of preparation. The final costs of the project wili depend on actual labor and material costs,actual site conditions,productivity,competitive market conditions,final project scope,final schedule and other variable factors. As a result,the final project costs will vary from those presented above. Because of these factors,funding needs must be carefully reviewed prior to making specific financial decisions or establishing final budgets. ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 EDMONDS AVE GREEN CONNECTION PROJECT NO.:408314 ORDER OF MAGNITUDE ESTIMATE TOTAG UNIT' ' TOTAL ' DESCRIPTION' QTY I UNIT COST' '' COST ' EDMONDS SEG.4 TOTAL LENGTH 7,600 LF 2 Lanes Section, 10th pl-6th Street 1,600 LF : Subtotal 1 $482,787 : SUBTOTAL $482,7a� MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $48,279 SUBTOTAL $531,065 CONTINGENCY 30.0% $159,320 CONSTRUCTION TOTAL(ROUNDED) $690,000 SALES TAX 9.5% $65,550 ' CONSTRUCTION TOTAL(ROUNDED) $755,550 Low range -30.0% $530,000 High Range 50.0% $1,130,000 NOTE: The above cost opinion is in March 2011 dollars and does not include future escalation, financial or O&M cosis. The cost opinion shown has been prepared for guidance in project evaluation from the information available at the time of preparation. The final costs of the project will depend on actual labor and material costs,actuai site conditions,productivity,competitive market conditions,final project scope,final schedule and other variable factors. As a result,the final project costs wiil vary from those presented above. Because of these factors,funding needs must be carefully reviewed , prior to making specific financial decisions or establishing final budgets. ORDINANCE NO. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3/9/2011 KIRKLAND AVE STORM DRAIN PROJECT NO.:408314 ORDER OF MAGNITUDE ESTIMATE ESTIMATE BY: D Hedglin REVIEW BY: :' TOTAL UNIT ' TOTAL" ' DESCRIPTION QTY ' 'UNIT COST I COST '' KIRKLAND AVENUE 16TH ST TO 12TH ST 1,450 LF Remove Curb,Gutter&Sidewalk 1,450 LF $15.00 $21,750 Replace Curb,Gutter&Sidewalk 1,450 LF $40.00 $58,000 2-in ACP Overlay 4,833 SY $9.95 $48,092 24-in CPEP Storm Drain(1 total) 1,450 LF $133.04 $192,906 12-in CPEP Storm Drai�Lateral 218 LF $81.07 $17,634 Catch Basins(at 200-ft intervals both sides) 15 EA $800.00 $11,680 Misc.Detail Ailowance 1 LS $35,006.14 $35,006 Subtotal 1 $385,068 SUBTOTAL $385,068 MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $38,507 SUBTOTAL $423,574 CONTINGENCY 30.0% $127,072 CONSTRUCTION TOTAL(ROUNDED) $55Q000 SALES TAX 9.5% $52,250 CONSTRUCTION TOTAL(ROUNDED) $602,250 Low range -30.0% $420,000 High Range 50.0% $900,000 NOTE: The above cost opinion is in March 2011 doliars and does not include future escalation, financial or O&M costs. The cost opinion shown has been prepared for guidance in project evaluation from the information available at the time of preparation. The finai costs of the project wili depend on actual labor and material costs,actual site conditions,productivity,competitive market conditions,final ' project scope,final schedule and other variable factors. As a result,the final project costs will vary from those presented above. Because of these factors,funding needs must be carefully reviewed prior to making specific financial decisions or establishing final budgets. ORDINANCE N0. 5611 RENTON SUNSET PLAN ACTION EIS PROJECT DATE: 3!9/2011 JEFFERSON GREEN CONNECTION PROJECT NO.:408314 ' ORDER OF MAGNITUDE ESTIMATE ' TOTAL UNIT ' ' TOTAL'' DESCRIPTION QTY' UNIT COST I COST I' JEFFERSON GREEN CONNECTION TOTAL LENGTH 1,300 LF j Section 1:Rain Garden on one side of Steet 850 LF 12-ft`Rain Garden Strip » ` iQ200, SF $18.86 $792;360' . Section 1 Subtotal $192,360 Section 2:Rain Garden both Sides of Street 150 LF 12-ft Rain Garden Strip(x2) 3,600 SF $14.26 $51,336 Section 2 Subtotal $51,336 ' SUBTOTAL $243,696 MOBILIZATION,BONDS,INSURANCE,TEMP.FACILITIES,DEMOB,ETC 10.0% $24,370 SUBTOTAL $268,066 CONTINGENCY 30.0% $80,420 ' CONSTRUCTION TOTAL(ROUNDED) $350,000 SALES TAX 9.5% $33,250 CONSTRUCTION TOTAL(ROUNDED) $383,250 Low range -30,0% $270,000 High Range 50.0% $570,000 NOTE: The above cost opinion is in March 2011 dollars and does not indude future escalation, financial or O&M costs. The cost opinion shown has been prepared for guidance in project evaluation from the information available at the time of preparetion. The final costs of the project will depend on actual , labor and material costs,actuai site conditions,productivity,competitive market conditions,final , project scope,finai schedule and other variable factors. �ls a result,the final project costs wiil vary from those presented above. Because of these factors,funding needs must be carefuily reviewed prior to making specific financial decisions or establishing final budgets. ORDINANCE NO. 5611 Appendix D Hydrologic and Hydraulic Model Output ORDINANCE NO. 5611 1�p�endix D1 - Suh-Re�ion�i Fi�w Cont�ol Fa�ility ORDINANCE NO. 5611 MODELING LOG F6lL.L� Run Description Sheet MooE�ER: Raymond Chung/SEA REVIEWER: Dustin Atchison�SEA Ptto�ecT: Renton Sunset Terrace CLIENT: CitY Of RentOn PROJECT NUBER: 4�8314 DATE: Apri114 2011. ' RUN N0: RF_1 MODEL USED: j^1�I j-jM(ver3� DRNE AND \\simba\proj\RentonWACityOf�408314\9_Stormwater\Analysis\RegionalDet PATH: ention PURPOSE OF Preliminary determine the size of a regional detention size needed to RUN: control the peak flow rate for the additiona12.6 ac of impervious per FEIS Preferred Alternative.WQ design flow go to infiltration to native soil (0.25"/hr)while the high flow go to a detention vault. Input Description FILE NAMES: j� 1 COMMENTS: Scale Factor=1.0 using SeaTac gage. The new impervious area estimated to be detained is 2.6 ac. Adding 10% safety factor,the detenfion facility to be sized fro 2.9 ac The water will flow thru rain garden for treatment with 1.5"/hr of infiltration rate. Rain garden 6"was ponding,and 18" of compost soil with 30% void.A total of 0.95 feet of storage and 1.45 feet deep with freeboard. Infiltration gallery assumes 18" of gravel with 30% void and underdrain pipe. Oufput Descriptian FI�E NAMES: RF Sunset.doc SEA/MODELLOG_REGIONALFACILITY.DOC 1 1 ORDINANCE NO. 5611 RUN DESCRIPTION SHEET COMMENTS: See output summary.The release rate from the detention vault meets the Peak flow rate matching standard.All the water quality ' flow is infiltrated into native ground. Rain Vault Infiltration Garden Gallery Pond Dimensions Bottom Length x Width(feet) 155 x 20 135x20 125x100 Depth(feet) 1.45 6.5 3 Side slopes(H:V) 4 Vert Vert Discharqe Structure Riser Height(feet) 0.95 6 2.9 Riser Diameter(in) 18 18 Orifice 1 Diameter(in) 0 1.75 Orifice 1 Height(feet) 0 0 Orifice 2 DiaEneter(in) 0 2.2 Orifice 2 Height(feet) 0 3.5 Orifice 3 Diameter(in) 0 1.5 Orifice 3 Height(feet) 0 5 Modeled Infiltration Rate 1.5 0 025 (inches/hour) Side infiltration Off Off Off Evaporation On Off Off Precipitation on Facility On Off Off SEAIMODELLOG_REGIONALFACILITY.DOC 2 2 ORDINANCE N0. 5611 Western Washington Hydrology Model PROJECT REPORT Project Name: RF_1 Site Address: City _ Renton Report Date : 4/15/2011 Gage . Seatac Data Start . 1948/10/01 Data End . 1998/09/30 Precip Scale: 1.00 WWHM3 Version: PREDEVELOPED LAND USE Name . Basin 1 Bypass: No GroundWater: No Pervious Land Use Acres C, Lawn, Flat 2.9 Impervious Land Use Acres Element Flows To: 5urface Interflow Groundwater Name . 10000SF Bypass: No GroundWater: No Pervious Land Use Acres Impervious Land Use Acres ROADS FLAT 2.9 Element Flows To: Surface Interflow Groundwater etention Rain Garden, etention Rain Garden, Name . etention Rain Garden Bottom Length: 155ft. Bottom Width: 20ft. 3 ORDINANCE NO. 5611 Depth : 1_45ft. , Volume at riser head : 0.0826ft. ' Infiltration On Infiltration rate : 1_5 Infiltration saftey factor : 1 , Side slope 1: 4 To 1 ' Side slope 2: 4 To 1 ' Side slope 3: 4 To 1 Side slope 4: 4 To 1 Discharge Structure Riser Height: 0.95 ft. Riser Diameter: 18 in. ' Element Flows To: Outlet 1 Outlet 2 Detention Vault 1, Infiltration Bed, Pond Hydraulic Table Stage(ft) Area(acr) Volume(acr-ft) Dschrg(cfs) Infilt(cfs) 0.000 0.071 0.000 0.000 0.000 0.016 0.072 0_001 0.000 0.108 0.032 0.072 0.002 0.000 0.108 0.048 0.073 0.003 0.000 0.108 0.064 0.073 0.005 0.000 0.108 ' 0.081 0.074 0.006 0.000 0.108 ' 0.097 0.074 0.007 0.000 0.108 0.113 0_075 0.008 0.000 0.108 0.129 0.075 0.009 0.000 0.108 0.145 0_076 0.011 0.000 0.108 0_161 0.076 0.012 0.000 0.108 ' 0.177 0.077 0.013 0.000 0.108 ' 0.193 0_077 0.014 0.000 0.108 0_209 0_078 0_016 0.000 0.108 0_226 0.078 0.017 0.000 0.108 0_242 0.079 0_018 0.000 0.108 0_258 0.080 0_019 0.000 0.108 0.274 0.080 0.021 0.000 0.108 ' 0_290 0.081 0_022 0.000 0.108 0.306 0.081 0.023 0.000 0.108 0.322 0.082 0.025 0.000 0.108 0.338 0.082 0_026 0.000 0.108 0.354 0.083 0.027 0.000 0.108 0.371 0.083 0.029 0.000 0.108 0.387 0_084 0.030 0.000 0.108 ' 0.403 0.084 0.031 0.000 0.108 0.419 0.085 0.033 0.000 0.108 0.435 0.085 0.034 0.000 0.108 0.451 0_086 0.035 0.000 0.108 0.467 0.087 0.037 0.000 0_108 0.483 0.087 0.038 0.000 0_108 0.499 0.088 0.040 0.000 0.108 0.516 0.088 0.041 0.000 0_108 0.532 0.089 0.042 0.000 0.108 - 0.548 0.089 0.044 0.000 0.108 4 ORDINANCE NO. 5611 0.564 0.090 0.045 0.000 0.108 0.580 0.090 0.047 0.000 0.108 ' 0.596 0.091 0.048 0.000 0.108 0.612 0.091 0.050 0.000 0.108 0.628 0_092 0.051 0.000 0.108 0.644 0.092 0.053 0.000 0.108 ' 0.661 0.093 0.054 0.000 0.108 0.677 0_094 0.056 0.000 0.108 0.693 0_094 0.057 0.000 0.108 ' 0.709 0_095 0.059 0.000 0.108 0.725 0_095 0.060 0.000 0.108 0.741 0_096 0.062 0.000 0.108 0.757 0_096 0_063 0_000 0.108 0.773 0_097 0.065 0.000 0.108 0.789 0.097 0.066 0.000 0_108 0.806 0_098 0.068 O.G00 0.108 0.822 0_099 0.070 0.000 0.108 0.838 0.099 0.071 0.000 0.108 0.854 0.100 0.073 0.000 0.108 0.870 0.100 0.074 0.000 0.108 0.886 0.101 0.076 0.000 0.108 0.902 0.101 0.078 0.000 0.108 0.918 0.102 0.079 0.000 0.108 ' 0.934 0.102 0.081 0.000 0.108 0.951 0.103 0.083 0.000 0.108 0.967 0.104 0.084 0.031 0.108 0.983 0.104 0.086 0.087 0.108 ' 0.999 0.105 0_088 0.158 0.108 1_015 0.105 0_089 0.242 0.108 1_031 0.106 0_091 0.337 0.108 1_047 0.106 0_093 0.443 0.108 1_063 0.107 0.094 0.557 0.108 1.079 0.108 0.096 0.680 0.108 1.096 0.108 0_098 0.811 0.108 1.112 0.109 0.100 0.950 0.108 1.128 0_109 0.101 1.095 0_108 1.144 0_110 0.103 1.247 0.108 1.160 0.110 0.105 1.406 0.108 ': 1.176 0.111 0.107 1.571 0.108 1.192 0.112 0.109 1.742 0.108 1.208 0.112 0.110 1.918 0.108 1.224 0.113 0.112 2.100 0.108 1.241 0.113 0.114 2.288 0.108 1.257 0.114 0_116 2.481 0.108 1_273 0.114 0.118 2.679 0.108 1.289 0.115 0_119 2_882 0.108 L 305 0.116 0_121 3.090 0.108 1.321 0.116 0.123 3.303 0.108 ' 1.337 0.117 0.125 3.520 0.108 1.353 0.117 0.127 3.742 0.108 1.369 0.118 0.129 3.968 0.108 1.386 0.119 0.131 4.199 0.108 1.402 0.119 0.133 4.434 0.108 1.418 0.120 0.135 4.674 0.108 1_434 0.120 0_137 4.917 0.108 1_450 0.121 0.138 5.165 0.108 5 ORDINANCE NO. 5611 Name . Infiltration Bed Bottom Length: 125ft. Bottom Width : 100ft. Trench bottom slope 1: 0.005 To 1 Trench Left side slope 0: 0.1 To 1 Trench right side slope 2: 0.1 To 1 Material thickness of first layer : 3 Pour Space of material for first layer : 0.33 Material thickness of second layer : 0 Pour Space of material for second layer : 0 Material thickness of third layer : 0 Pour Space of material for third layer : 0 Infiltration On ' Infiltration rate : 0.25 Infiltration saftey factor : 1 Discharge 5tructure ' Riser Height: 2.9 ft_ ' Riser Diameter: 18 in. Element Flows To: Outlet 1 Outlet 2 Gravel Trench Bed Hydraulic Table Stac7e(ft) Area(acr) Volume(acr-ft) Dschrg(c£s) Infilt(c£s) 0_000 0_287 0.000 0.000 0.000 0.033 0.287 0.003 0.000 0_072 0_067 0.287 0.006 0_000 0.072 0.100 0.287 0.009 0.000 0.072 0.133 0.287 0.013 0.000 0.072 0.167 0_287 0.016 0.000 0.072 0.200 0.287 0.019 0_000 0.072 0.233 0.287 0.022 0.000 0.072 0.267 0.287 0.025 0.000 0.072 0.300 0.287 0.028 0.000 0.072 0.333 0.287 0.032 0.000 0.072 0.367 0_287 0.035 0.0.00 0.072 ' 0.400 0.287 0.038 0.000 0.072 0.433 0_287 0.041 0.000 0.072 0.467 0.287 0.044 0.000 0_072 0.500 0.287 0.047 0_000 0.072 0.533 0.287 0.051 0.000 0_072 0.567 0.287 0.054 0.000 0.072 0.600 0.287 0.057 0.000 0.072 0.633 0.287 0.060 0.000 0_072 0.667 0.287 0.063 0.000 0.072 0_700 0.287 0.066 0.000 0.072 0.733 0.287 0.069 0.000 0_072 0.767 0.287 0.073 0_000 0.072 0_800 0.287 0.076 0.000 0.072 0.833 0.287 0_079 0.000 0.072 0_867 0.287 0.082 0.000 0.072 0.900 0.287 0.085 0.000 0.072 0_933 0.288 0.088 0_000 0.072 6 ORDINANCE NO. 5611 0.967 0.288 0.092 0.000 0.072 1.000 0_288 0.095 0_000 0.072 1.033 0_288 0.098 0.000 0_072 1.067 0_288 0.101. 0.000 0.072 1.100 0.288 0_104 0.000 0.072 ' 1.133 0_288 0.107 0.000 0.072 1.167 0_288 0.111 0.000 0.072 1.200 0.288 0.114 0.000 0.072 1.233 0.288 0_117 0.000 0.072 1.267 0.288 0.120 0_000 0.072 1.300 0.288 0.123 0.000 0.072 1.333 0.288 0.126 0.000 0.072 1.367 0.288 0_130 0.000 0.072 1.400 0.288 0.133 0.000 0.072 1_433 0_288 0.136 0.000 0.072 ' 1.467 0.288 0.139 0.000 0.072 ', 1.500 0.288 0.142 0.000 0.072 1.533 0_288 0.145 0.000 0.072 1.567 0_288 0.149 0.000 0.072 1.600 0.288 0.152 0.000 0_072 1.633 0.288 0.155 0.000 0.072 l_667 0_288 0.158 0.000 0.072 1.700 0_288 0.161 0.000 0.072 � 1.733 0.288 0.164 0.000 0.072 1.767 0.288 0_168 0.000 0.072 1.800 0_288 0.171 0.000 0.072 ' 1.833 0_288 0.174 0.000 0.072 1.867 0.288 0.177 0.000 0.072 1.900 0.288 0.180 0.000 0.072 1.933 0.288 0.183 0.000 0.072 1.967 0.288 0.187 0.000 0.072 2.000 0.288 0.190 0.000 0.072 2.033 0.288 0.193 0.000 0.072 2.067 0.288 0.196 0.000 0.072 2.100 0.288 0.199 0.000 0.072 2.133 0.288 0.202 0.000 0.072 2.167 0.288 0.206 0.000 0.072 2.200 0.288 0.209 0.000 0.072 2.233 0.288 0.212 0.000 0.072 2.267 0.288 0.215 0.000 0.072 2.300 0.288 0.218 0_000 0.072 2.333 0.288 0.221 0.000 0.072 2.367 0.288 0.225 0.000 0.072 2.400 0.288 0.228 0.000 0.072 2_433 0.288 0.231 0.000 0.072 2.467 0.288 0_234 0.000 0.072 2.500 0.288 0.237 0.000 0.072 2.533 0.288 0.241 0.000 0.072 2.567 0.288 0.244 0.000 0.072 2.600 0.289 0.247 0.000 0_072 2.633 0_289 0.250 0.000 0.072 ' 2.667 0_289 0.253 0_000 0.072 2.700 0.289 0.256 0_000 0.072 2.733 0_289 0.260 0.000 0.072 2.767 0.289 0.263 0.000 0.072 2.800 0.289 0.266 0.000 0.072 2.833 0.289 0.269 0.000 0.072 7 ORDINANCE N0. 5611 2_867 0.289 0.272 0.000 0.072 2.900 0.289 0.275 0.000 0.072 2.933 0.289 0.279 0.089 0.072 2.967 0.289 0.282 0.251 0.072 3.000 0.289 0.285 0.462 0.072 Name _ Detention Vault 1 Width : 20 ft. Length : 135 ft. Depth: 6.5ft. Discharge Structure Riser Height: 6 ft. Riser Diameter: 18 in. Orifice 1 Diameter_ 1.75 in. Elevation: 0 ft. Orifice 1 Diameter: 2.2 in_ Elevation: 3.5 ft. Orifice 1 Diameter: 1.5 in_ Elevation: 5 ft. Element Flows To: Outlet 1 Outlet 2 Vault Hydraulic Table Staqe(£t) Area(acr) Volume(acr-ft) Dschrg(cfs) Infilt(cfs) 0_000 0.062 0_000 0.000 0.000 ' 0.072 0.062 0_004 0.022 0.000 0.144 0.062 0_009 0.031 0.000 0.217 0.062 0.013 0.037 0.000 0.289 0.062 0.018 0_043 0.000 0_361 0.062 0.022 0.048 0.000 0.433 0_062 0.027 0.053 0.000 0.506 0.062 0.031 0.057 0.000 0.578 0.062 0.036 0.061 0_000 0.650 0.062 0.040 0.065 0.000 0.722 0.062 0.045 0.068 0_000 0.794 0.062 0.049 0.072 0.000 0.867 0_062 0.054 0.075 0.000 0.939 0.062 0.058 0_078 0.000 1.011 0.062 0.063 0.081 0.000 1.083 0.062 0.067 0.084 0.000 1.156 0.062 0.072 0.086 0.000 1_228 0.062 0.076 0.089 0.000 1.300 0.062 0.081 0.092 0.000 1_372 0.062 0.085 0.094 0.000 1.444 0_062 0.090 0.097 0.000 1.517 0.062 0.094 0.099 0.000 1.589 0.062 0.098 0.101 0.000 1.661 0.062 0.103 0_104 0.000 1.733 0.062 0.107 0.106 0.000 1.806 0.062 0.112 0.108 0.000 1.878 0.062 0.116 0_110 0.000 1.950 0_062 0.121 0.112 0.000 2.022 0.062 0.125 0_114 0_000 2.094 0.062 0.130 0.116 0.000 2.167 0.062 0.134 0.118 0.000 8 ORDINANCE NO. 5611 2_239 0.062 0.139 0.120 0.000 2.311 0.062 0.143 0.122 0.000 2_383 0.062 0.148 0.124 0.000 2.456 0.062 0.152 0.126 0.000 2.528 0.062 0.157 0.128 0.000 2.600 0.062 0_161 0.130 0.000 2.672 0.062 0.166 0.131 0.000 2.744 0.062 0.170 0.133 0.000 2.817 0.062 0.175 0.135 0_000 2.889 0.062 0.179 0.137 0.000 2.961 0.062 0.184 0.138 0.000 3.033 0.062 0.188 0.140 0.000 3.106 0_062 C.192 0.142 0.000 3_178 0.062 0.197 0.143 0.000 3.250 0.062 0.201 0.145 0.000 3.322 0.062 0.206 0.147 0.000 3.394 0_062 0.210 0_148 0.000 3.467 0.062 0.215 0.150 0.000 3.539 0.062 0.219 0.176 0.000 3.611 0.062 0.224 0.195 0.000 3.683 0.062 0.228 0.209 0.000 3.756 0.062 0.233 0.220 0.000 3_828 0.062 0_237 0.230 0.000 3.900 0.062 0_242 0.239 0.000 3.972 0_062 0.246 0_248 0.000 4.044 0.062 0.251 0.256 0.000 4_117 0.062 0.255 0.263 0.000 4.189 0.062 0.260 0.270 0.000 4.261 0.062 0.264 0.277 0.000 4.333 0.062 0.269 0_283 0.000 4.406 0_062 0.273 0_290 0.000 4.478 0_062 0.278 0.296 0.000 4.550 0_062 0.282 0.302 0.000 ' 4.622 0.062 0.287 0.308 0.000 4.694 0.062 0.291 0.313 0.000 4.767 0_062 0.295 0.319 0.000 4.839 0_062 0.300 0.324 0.000 4.911 0.062 0_304 0.329 0.000 4_983 0.062 0.309 0.334 0.000 5.056 0.062 0.313 0.353 0.000 5.128 0.062 0.318 0.365 0_000 5.200 0.062 0.322 0.376 0_000 5_272 0.062 0.327 0.385 0.000 5_344 0.062 0.331 0.393 0.000 5.417 0.062 0.336 0.401 0.000 5.489 0.062 0.340 0_409 0.000 5.561 0_062 0.345 0.416 0.000 5.633 0.062 0.349 0.424 0.000 5.706 0.062 0.354 0.431 0.000 5.778 0.062 0.358 0.437 0.000 5.850 0.062 0.363 0.444 0.000 5.922 0.062 0.367 0.450 0.000 5.994 0.062 0.372 0.457 0.000 6.067 0.062 0.376 0.714 0.000 6.139 0.062 0.381 1.225 0.000 6.211 0_062 0.385 1.892 0.000 6.283 0.062 0.389 2.684 0.000 9 ORDINANCE NO. 5611 6.356 0.062 0.394 3.584 0.000 6 .428 0.062 0.398 4.579 0.000 6.500 0.062 0.403 5.662 0.000 6.572 0.062 0.407 6.827 0.000 ', 6.644 0.000 0.000 8.066 0.000 MITIGATED LAND USE ANALYSIS RESULTS Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.146865 ' 5 year 0.231604 10 year 0.295364 25 year 0.384285 50 year 0.456469 100 year 0.533678 Flow Frequency Return Periods for Mitigated_ POC #1 Return Period Flow(cfs) 2 year 0.127516 5 year 0.208151 10 year 0.270392 25 year 0.358881 50 year 0.43189 100 year 0.510955 Yearly Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1950 C.180 0_115 1951 0.475 0.125 1952 0.244 0.285 1953 0.110 0_096 . 1954 0.078 0_103 1955 0.137 0_078 1956 0.187 0.230 1957 0.185 0.138 1958 0.201 0.134 1959 0.127 0.121 1960 0.097 0.122 1961 0.218 0.280 1962 0.122 0.115 1963 0.072 0.074 1964 0.127 0.101 1965 0.143 0.090 1966 0.104 0_124 1967 0.119 0.081 1968 0.222 0.147 1969 0.158 0.090 1970 0_122 0.121 1971 0_128 0.109 1972 0.137 0.104 10 ORDINANCE N0. 5611 1973 0.298 0.177 1974 0_105 0.094 1975 0.140 0.069 1976 0_246 0.207 1977 0.137 0.106 1978 0.052 0.086 1979 0.149 0.125 1980 0.064 0.074 1981 0.192 0.199 1982 0.164 0.106 1983 0.347 0.364 1984 0.137 0.120 1985 0.129 0.096 1986 0.072 0.119 1987 0.251 0.312 1988 0.228 0.331 1989 0.088 0.095 1990 0_062 0.031 1991 0.498 0.398 1992 0_410 0.387 1993 0.124 0.099 1994 0.097 0.108 1995 0.047 0.028 1996 0.129 0_119 1997 0.309 0.276 1998 0.228 0.380 1999 0.151 0.105 Ranked Yearly Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1. 0.4985 0.3980 2 0.4752 0.3866 3 0.4102 0.3802 4 0.3466 0.3637 5 0.3086 0.3312 6 0.2979 0.3120 7 0.2509 0.2849 8 0.2456 0.2796 9 0.2435 0.2759 10 0.2280 0.2299 11 0.2279 0.2072 12 0.2218 0.1993 13 0.2176 0.1769 14 0.2015 0.1474 15 0_1919 0.1379 16 0_1872 0.1337 17 0.1849 0.1254 18 0.1805 0.1253 19 0.1637 0.1240 20 0.1575 0.1224 21 0.1508 0.1214 22 0.1491 0_1211 23 0.1435 0.1198 24 0.1404 0.1194 25 0_1374 0.1187 26 0.1372 0.1154 11 ORDINANCE NO. 5611 27 0_1369 0.1147 28 0.1366 0.1094 29 0.1289 0.1082 30 0.1288 0.1063 31 0.1279 0.1060 ', 32 0_1274 0.1046 33 0_1271 0.1037 34 0.1238 0.1030 35 0.1224 0.1013 36 0.1222 0_0989 37 0.1192 0.0965 38 0.1095 0_0960 39 0.1049 0.0952 40 0.1043 0.0939 41 0.0974 0.0901 42 0.0972 0.0897 43 0.0878 0.0860 44 0.0784 0.0808 45 0_0724 0.0776 46 0.0717 0.0740 47 0.0645 0.0738 48 0.0621 0.0687 49 0.0520 0.0308 50 0_0466 0.0282 POC #1 Facility FAILED duration standard for l+ flows. Flow(CFS) Predev Dev Percentage Pass/Fail 0.0734 2357 1986 84 Pass 0_0773 2032 1802 88 Pass 0_0812 1754 1634 93 Pass 0.0850 1555 1475 94 Pass 0_0889 1420 1350 95 Pass 0.0928 1238 1195 96 Pass 0.0966 1094 1056 96 Pass 0.1005 974 926 95 Pass 0.1044 861 816 94 Pass 0.1083 770 702 91 Pass 0.1121 687 608 88 Pass _ 0.1160 627 540 86 Pass 0.1199 556 464 83 Pass 0.1237 485 396 81 Pass 0.1276 442 353 79 Pass 0.1315 396 319 80 Pass 0.1353 356 274 76 Pass 0.1392 317 242 76 Pass 0.1431 283 214 75 Pass 0.1469 270 194 71 Pass 0.1508 247 178 72 Pass 0.1547 224 173 77 Pass 0.1586 206 170 82 Pass 0.1624 183 166 90 Pass 0.1663 159 163 102 Pass 0.1702 141 160 113 Fail 12 ORDINANCE NO. 5611 0.1740 125 155 124 Fail 0.1779 115 154 133 Fail 0.1818 97 149 153 Fail 0.1856 87 144 165 Fai1 0_1895 74 139 187 Fail 0.1934 66 133 201 Fail 0.1972 60 131 218 Fail 0.2011 58 128 220 Fail 0.2050 52 124 238 Fail 0.2088 47 123 261 Fail 0.2127 44 120 272 Fail 0.2166 43 119 276 Fail 0.2205 39 116 297 Fai]_ 0.2243 34 113 332 Fail 0_2282 31 102 329 Fail 0.2321 28 96 342 Fail 0.2359 27 90 333 Fail 0_2398 25 88 352 Fai1 0.2437 21 80 380 Fail 0.2475 18 78 433 Fail 0.2514 17 77 452 Fail 0_2553 17 75 441 Fail ' 0.2591 16 70 437 Fail 0_2630 15 67 446 Fail 0.2669 15 65 433 Fail ' 0.2708 14 60 428 Fail 0.2746 13 56 430 Fail 0.2785 12 50 416 Fail 0.2824 12 47 391 Fail � 0.2862 10 39 390 Fail 0.2901 10 36 360 Fail 0.2940 10 35 350 FaiT 0.2978 10 34 340 Fail ' 0.3017 9 30 333 Fail : 0.3056 9 30 333 Fai1 0.3094 8 28 350 Fail 0.3133 8 27 337 Fail 0.3172 8 25 312 Fai1 0.3211 8 21 262 Fai1 0.3249 8 20 250 Fail 0.3288 8 19 237 Fail 0.3327 8 16 200 Fail 0.3365 8 16 200 Fail 0.3404 7 16 228 Fail 0.3443 7 16 228 Fail 0.3481 6 16 266 Fail 0.3520 6 16 266 Fail 0_3559 6 14 233 Fail 0_3597 6 12 200 Fail 0.3636 6 10 166 Fail 0.3675 6 8 133 Fail 0_3713 6 8 133 Fail 0.3752 6 8 133 Fail 0.3791 6 6 100 Pass 0.3830 6 5 83 Pass 0.3868 6 5 83 Pass 0_3907 6 4 66 Pass 13 ORDINANCE NO. 5611 0_3946 5 4 80 Pass ' 0.3984 5 3 60 Pass 0.4023 5 2 40 Pass 0.4062 5 1 20 Pass ' 0.4100 5 1 20 Pass 0.4139 4 1 25 Pass 0.4178 4 0 0 Pass 0.4216 4 0 0 Pass 0.4255 4 0 0 Pass 0.4294 4 0 0 Pass 0.4333 4 0 0 Pass 0.4371 3 0 0 Pass 0_4410 3 0 0 Pass 0.4449 3 0 0 Pass 0.4487 3 0 0 Pass 0.4526 3 0 0 Pass 0.4565 2 0 0 Pass The development has an increase in flow durations from 1/2 predeveloped 2 year flow to the 2 year flow or more than a 10� increase from the 2 year to the 50 year flow. Water Quality BMP Flow and Volume for POC 1. On-line facility volume: 0 acre-feet On-line facility target flow: 0 cfs. Adjusted for 15 min: 0 cfs_ O£f-line £acility target flow: 0 cfs. Adjusted £or 15 mi.n: 0 cfs. Perind and Impind Changes No changes have been made. This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by the user. Clear Creek ', Solutions and the Washington State Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied warranties of program ar�d accompanying documentation. In no event sha11 Clear Creek Solutions and/or the Washington State Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions or the Washington State Department of Ecology has been advised of the possibility of such damages. 14 ORDINANCE NO. 5611 Figure l. Screen Capture of the Rain Garden Input and Infiltration Output ��,��, o�e � � __ _...._:. _..,� _.._ __ _..._.. _.. .... _. _. _..._.. _ _. .�... _. _� r.� � � : �� ^�'��t��°��N,��'�i�-��w�., ��€�� , ,.. ♦ SCENMIDS � .��j FecilfyNeme �.ae+mfta.�Gmhn_�, ; -q�� ` �--I .. �OuNet7 ��Oulid2 �OWat3 �� € �. Downstream.Cannecbons ...�enLpi4Nti IMIMa.Bd �::� . �'vNm-sw �'�. FacrINTYPe. '.imp�tatb�Pmtl ��.�'� � ��"fl Scmaw flecWdmd,a3eawf+c+H ANOPond _:�Qu�,,,PonQ�„f.�. �. : : ' . ..� ...�_ .__.._ _..... _. . . .., a�..?a�e�s.f�. ,:.;. F iye n mEi@.ev�(n)'�°0 F l yD mensmn¢ a�ue�s� u� i B omlatid+011�: G ' � WwHqHll OB5 ��.. � E : EHeca�wmPil:'. 1� �1.��'��`�i ��65�-. � : Le�sh54u1HA� . ;� : ¢aim�5�5kpe.MM Natl�Tra . � 9qM5de5Mpe�WJj � . r�seesu,aiHM . F IyDim:e D gam< Onh�s'��D�amelerHeight OMss �'�. IM 14e4ov '��.�ES Numtier (In)�.�..��(FQ� (ds) . :{ ! MaauetliMua�`mflml�l 1.5 -j 1�.��.0 ��i;1 ---, 0 �': P�awGac�IvMaiul �:�.]1:_ .� .2:. 0 .i'0��'-' 0 .. : JttWMedSu4QAroela�wl:7��.NO -'� 3��..0 .i:`p ' p ��. �: TtlalYd�elmvaeE(mehi 352292 .��. �. �.�. Ma+aElmm: : idd4dmaihv�q+PqvAanenl ��aUat �dVdvic IP Ha=dlaoM) W3 � mavo5,merhwMFxaN�en1 3B'!.m aa,abmmw n�o�- �� : PamII�AaW �. 41.02 ShorPo tlT EI �Opvil3le .. � T �TN � .;.� IYmPde6ae"t �� ..... : 'NO. ..... Sem�W lmdrY • ....` .... .:_ . � � ......... . . .... !. .. $f'� y:� .......... .. . ..... ......... ........ . .._._. .......... ........... . . ....... . ._._.... .... ............. ....,.. ...... '.. .. . ........ ...... ... .'..4l75/2011:.2.1fiPM . Figure 2. Screen Capture of the Rain Garden Input and Infiltration Output _ ._. _ ��,�,«:� � . o�� , ��..m _m_m___ __,_____�,_ _� _,_�___. __ .: _. . _. ___ __ . ..___ _._...... _..._._ ..,__.��__ __.____;___.__.� � � N.� � � � �� . .. . m�+��'3��-'��-g'�"�z,'��"'�,�,��i�::.:k �.. �.��'�+s3�:t �. �Fh,a a�,i,��a�. ��. �_. acewwros --._ . , .. . ,. .� _......�...,�._� .... _. , - . _..�.,. � F fiyNome b1++NmHe4 :��. � (:P�,yaqp�p � OWell OWIet2 '�Ouliel3 P6 : : DmmslreemConneWon��. 0 ��0 �.��.0� . �"r�'h;yx : Fed�iryTYPe �.vdlmxivewl -�:: �.. '"Prcdawm.lipstlusedp� ..,9wCcTrend� � �. . :... ..' __ _� : i��wQndmAry6�IN�^F�,bf. �. . : Fa i ty B tl m Elewt�on(In �� ..�� :�F uy 0 nsi �� ,.� _ _ t diL�n .. n� )5 - OuOe[Stra . � Tmd�6onvnWNM1 g0. PoaHegli.I] j �.9EIIatr.eTaalDaVh �. ,, Prm�Daioe,n{nl � �� — ��Ld StleSqp�liach �Ofb . ��. Fw�TYGe .FIM wa,xRe .pHg+SdeSNve � F £ � A1 1 d Layers tof ��. �pl.�til.4neslliJ , Or�fice �.D 1 H 9h1 OMez . . � �� '.;.� ��.�i wwur ��. s3 Numbe..P) ltil �. f�tT) � zt�.dmnxiul s `_." - . �,.. . � -� ]'.€o . �o_....-:� 0 _:�wzro�';. �>z..�o .��„�� a -'w�3r�oyui �e�'€a :sto�:::::.j u ��.:bv3Po^vq MmeFbrma € 3mlatrw �3'/ES 3 � �"` H 1 ni �s E ��3 mvalb9rt Hal Ti✓nl p^ Pmdi exvi (O10 "'� /� � 25 __ !��Yf f _ � ��.INio PMcnmG Sh P tlTaW 0 ibk .—��y . �"'Po*�� E (�(U W WS L+ Isder+N+i NO � ��. . . . �, < .. ..�.t.?tlnlVdmslrfitMMfaaeN) .3439 TdaiValnuTkp9'�FxZylmeNl 32� �. Sare�x� Lued.J' . . .... ..:. .:':iotelYdmihu+9�+Aim(%+sril -�D� :PacallAb�eC iW Y.� . __ . ._ ._ _.- . .. . . .. q/15R011 21$PM ��.. 15 ORDINANCE NO. 5611 Sunset Terrace Study Area Existing Conditions-KCRTS Output � �. ' � .Are� _..._...��.__ �; Till Fares� 0.00 acres TiII P�sture a.Qa acr�s Till ��ass 2.�0 acres Ou#wa�h Far�est �.�0 acres tluiwash pas#uf�: �.00 �cr�s outwa�sn Grass: a.na acres; "V�f�tland; U.�O acres Imperrrious` 0.QU acres _. _.� : _Tota l., _��.�...� � �� 2.90 a�cre� Scale Fac#or C 1.Oa Hourl� WHistaric Time Series: RFl-ex� » Campu#�e Time S�eries Mn�dify lJser Input , �_k_. � _. �� _.__.�� ,� . _�_::... _ �� _ ._.,� ... ._.. . __.�._�._._.. � Fil�fior compUt�d Time`Series [.T'�F]-, Flow Frequency Analysis LogPearson III Coefficients Time Series File:rfl-ex.tsf Mean= -OJ95 StdDev= 0.226 • Project Location:Sea-Tac Skew= 0.298 ---Annual Peak Flow Rates--- -----Flow Frequency Analysis------- Flow Rate Rank Time of Peak --Peaks-- Rank Return Prob (CFS) (CFS) Period 0.196 15 2/16/49 21:00 0.533 1 80.57 0.988 0.533 1 3/03/5016:00 0.522 2 28.92 0.965 0.259 8 2/09/51 2:00 0.431 3 17.63 0.943 0.119 34 1/30/52 8:00 0.363 4 12.67 0.921 0.090 39 3/24/5315:00 0.329 5 9.89 0.899 0.155 21 12/19/5319:00 0.270 6 8.12 0.877 0.195 16 2/07/5517:00 0.266 7 6.88 0.855 0.201 14 12/20/5517:00 0.259 8 5.97 0.832 0.220 12 12/09/5614:00 0.238 9 5.27 0.810 0.143 27 12/25/5716:00 0.232 10 4.72 0.788 16 ' ORDINANCE NO. 5611 0.108 37 1/26/59 20:00 0.220 11 4.27 OJ66 0.220 11 11/20/59 21:00 0.220 12 3.90 OJ44 0.139 29 2/14/6121:00 0.215 13 3.59 0.722 0.081 41 11/22/61 2:00 0.201 14 3.33 0.699 0.146 25 12/15/62 2:00 0.196 15 3.10 0.677 0.151 22 12/31/63 23:00 0.195 16 2.90 0.655 0.112 35 12/21/64 4:00 0.177 17 2J2 0.633 0.132 32 1/05/6616:00 0.172 18 2.57 0.611 0.232 10 1/19/6714:00 0.165 19 2.43 0.589 0.172 18 8/24/6816:00 0.158 20 2.31 0.566 0.132 33 12/03/68 16:00 0.155 21 2.19 0.544 0.133 30 1/13/70 22:00 0.151 22 2.09 0.522 ' 0.148 24 12/06/70 8:00 0.150 23 2.00 0.500 ' 0.329 5 2/27/72 7:00 0.148 24 1.92 0.478 ' 0.111 36 1/13/73 2:00 0.146 25 1.84 0.456 0.165 19 11/28/73 9:00 0.144 26 1J7 0.434 0.270 6 12/26/74 23:00 0.143 27 1.70 0.411 0.144 26 12/02/75 20:00 0.143 28 1.64 0.389 0.054 45 8/26/77 2:00 0.139 29 1.58 0.367 ' 0.158 20 9/22/7819:00 0.133 30 1.53 0.345 0.067 44 11/19/78 0:00 0.133 31 1.48 0.323 0.215 13 12/14/79 21:00 0.132 32 1.43 0.301 0.177 17 11/21/8011:00 0.132 33 1.39 0.278 0.363 4 10/06/8115:00 0.119 34 1.34 0.256 0.143 28 1/05/83 8:00 0.112 35 1.31 0.234 0.150 23 3/15/84 20:00 0.111 36 1.27 0.212 0.073 42 6/06/85 23:00 0.108 37 1.23 0.190 0.266 7 1/18/8616:00 0.101 38 1.20 0.168 0.238 9 11/24/86 3:00 0.090 39 1.17 0.145 0.090 40 1/14/8812:00 0.090 40 1.14 0.123 0.068 43 11/05/8814:00 0.081 41 1.11 0.101 0.522 2 1/09/90 6:00 0.073 42 1.09 0.079 0.431 3 11/24/90 8:00 0.068 43 1.06 0.057 0.133 31 1/27/9215:00 0.067 44 1.04 0.035 0.101 38 3/22/93 22:00 0.054 45 1.01 0.012 Computed Peaks 0.601 100.00 0.990 Computed Peaks 0.506 50.00 0.980 Computed Peaks 0.419 25.00 0.960 Computed Peaks 0.317 10.00 0.900 Computed Peaks 0.297 8.00 0.875 Computed Peaks 0.246 5.00 0.800 Computed Peaks 0.156 2.00 0.500 Computed Peaks 0.107 1.30 0.231 17 ORDINANCE NO. 5611 ��p�enc�i� D2 - P��p►osed Conveyance �ystem ORDINANCE NO. 5611 Figure 1. Node ID and Pipe ID , �.��.Fic EZ:J=n.�.LeYON.�a Cfsc..'L�eu " . :.. .. _ ��:,. :�:... :�: ::... �:.:. ..�:: . .:. .. . .:...... .. .�:: �:: .:..::. .��8� � ,i'` � � -:.�i�:��`L � �� -:'�.� c-_FrJ'��t ��r� i .'1c ,�j i N-012 .L ��. nwot � �.. i - . +'.�� ' � tj I '� : ;..'::. �9 > . tT.C16(Y:= � 4 �`mdc� 12 P U7 �. :Y�Mri]�:�?'+_� . ��C �"%a�osd P��. �Uie3s .�Afits N-003 q /A �. � : �Ree?� �� . � �'' .��UJ.A---_.: �P-nna- �. `s - il3 N-0O6 � 05 �� N-0U7 . � �/� � � i Outlall � � 7F O6 i P M1111 A ��. �� 17 �� f t w', f . e f��. '� r a : .:> .� '��. �. _ ._ . :; = - - � ,__:�.. - _ ... . ..._.,._..,—... � .- _._..,.. ,..__..,. ._...._...::. _____.a.:�.:... .._.........._.a. ._..P ..�,�:�;:__;�. . sFra 3m�"' �J.-. .. _,. ..,. ,._ .- r�sc�v�e�.�dac ^rs m �. ., ,..... cF.aam Figure 2. CB Rim Elevations and Pipe Sizes ' , ; .. . . , ,.. �-� .e.:Cr1.Y'wN��:LsYai' Daa:HSC..LI-p . :.:.. ... .._ . . ❑�� : � � i:. ��:�k��ai. E � -::'.`4.� t^F�tl:ut � �9srt �-1 �v; ,i; t 380AU0 k �. y ��. 380,330 H � � � { _ ,FROi^_TI"K € _ ast r 1$' i m. �24.�.f�em � . '�,{-iva a�� . � ��a � ,��"Gromatler=k � .i��b�' 328270 k 3 U00 tt � 35 7B0 f1 .��E�, �.�, y;� � 366:660 N � �xh"�'� k' on�•n. "ti" i 3U" i m � 3l�A00 M ' � � 2 520 tt 367.630 N � �� S �'� 5 270.UOU tt 30" ' .. � 7 7 E' � 2+f' m 320.960 R �� 335.310 k _ . � � i w,: � :4.:: . ....�._ s i.. ':. :` _ ... .. .. . .... ... . ... .. i: _... ._._. :.:: �::... ::: �.:.�:. :.::. ...::. :�: ........: ;x'.39'�>..3..S.ttal�,llR_'vs � .. � >oposedarcieretl•4t �fAY9. SSg ' 1 ORDINANCE NO. 5611 Figure 3.HGL at CB and 25-year Peak Flow Rate � .��.Ed�. �'�.Lnm'.c.LkN � .. .: �".' ..: � .:.. :. '.. ::. . . _ �:. ..:. :: �: : og� . � � .::. ��e��: .. =..��$ r__Fer9'�t� h:: "='�B�ve.. . �3 �11 i 3n.e2s n � ;i � s�z.�so n _ "a' � j ' - € ,s � s � � �� " ,ysa. P� H.8�ds �«�Hrck�T`=� 211.6 ds � y�� 327.171 k .35.102 ft 3d�.185 X �, ,��tr 364.172 X � rc�+'ReW�_ _ .FS ai rin' �� . eed =�i—,_��'.� _ 1l-^t-e�{ 1 '.`� 61.7 cfs i � 336.B5U tl � � 335.953 tt 2 275H S � � I £ j 258.SO�ilj3fl3. ., i3. c1� 8.9 ds 83 _ . 32U.193 tt � i �j 3.52011 ; �� I, v:; �` ,. } f . ... j_ �. t �.._...._�..:_ _.....__'�� . _...........�..r.._.�..... -�_.,._.,.'�� .....,_.._..-.�. ..__..._.��._.__.�,....,.: ,__._......._;; ..�._... — _....,...:��.: .. .�,-,. ..,._:�... � 5 ...2fr,r�s�llk;ed'r � �^woscCF�efcTNPlt�� '.N" ?E'34'� 2 ORDINANCE NO. 5611 History Cleared: 13:26:05 Friday,Aprii 15,20ll ROUTEHYD[] THRU[Proposed Preferred Alt]USING TYPElA AND [25 year]NOTZERO RELATIVE SCS/SBUH _ _ __ _ _, �.� ,_�.�._, .�._ w._.._ A.�.�.�_ __.._ ��.,��. ___, __ __ �_ ` Reach - Area : Flow ' Full Q Full (, nDepth Size € nVel fVel CBasin/ ; ID ; (ac) ; (cfs) ;' (cfs) < ratio :� (ft) � (ft/s) ° (fds) E Hyd _: .�..:.�� .:.:_ �_.�:.: .. �:::w: 18��, � ...:. :.:µ.::: f..:.:. ....... ... P 006 : 19.9000 . 8.9390 : 10.8248 < 0.83 E 1.0389 ; Di� , 6.8445 , 6.1256 ,6 �� ...,.. ..__�..... ... �.,,.._.. . ... ._...� w._.... _ ._� ...__..._ . . .�_ r ,� 3., P 007 : 16.9000 ; 8.3385 : 12.5181 : 0 67 1.1929 24 � 4.2671 ' 3.9846 �7 ; , � � : , E : Diam ' . � _ , , , , , F M._:. _� �-�� ,�.M:w � .._m�. __.� �� _._� ��;��_ �.. , �.�� __�� ,-.��,� � �___,.._� � � � P 011 � 50.0000 ' 24.4783 ; 50.9399 . 0 48 ; 0.9771 24 � 16.0524 � 16.2147 �ll � � f = � Diam � � .,.. _.....,.. ,.. ..__...., , . _ _. _... _.. _.»_. ._... ....... ..... . ... 'P-011A ; 66.6000 ; 34.9215 ; 51.0254 0 68 L2144 24 ;� 17.4940 ' 16.2419 13 ; ; Diam ; ` �...... ...�._.._. �. ,,�..___ _... __ .._.. ..�.._.._ _ . _... ...,._. _...._ _...... _. ., 18" � < P 012 i 18.0300 � 8.7961 ; 11.5595 3 0 76 � 0.9789 ; Diam ��:; �-ZO11 � 6.5413 '?12 ...::.: � ;;.: �: � _;�: . ,�24 �..�.: �.. _.,.m.: _...,. , ° P 001 i 44.4800 : 20.6655 ° 28.6632 : 0.72 1.2573 Diam , 9.9367 � 9.1238 :1 ' _ : . _ „ _ = � { : �: � .. __._:_. �: .: _.�... ..: . ,;:m� ... ,.. ...: ,...: �_�:;M �.... . %_, w..... �........ P 009 - 32.7200 , 18.2062 : 22.6394 � 0.80 � 13579 ; �� 8.0167 � 7.206� =9 �� , � , � . , . , : , : , : � . _ ; ......_ ...::..: � _ ....... ..:: �..:� .:.. _ ��..._.. _._..._.. .W.._._ _ ........ � � P OlA :' 77.2000 ; 38.8614 44.5548 ; 0 87 1.8069 30 � 10.2289 � 9.0766 ; ;; ; ; ; Diam 1 ' 'i :.. �..,,: ::� �;M .. ...., � �:.�� .� __.,,,�.� .. _...... : P-004 113.6500 ; 55.3268 ,! 88.7341 ; 0.62 , 1.7157 36 ; 13.2388 ; 12.5533 4 £ Diam , ...... _.. _ _... . ..... .. ...... .__ _;_�..... .... _ .,.�_.._.._ . �__.. __. ... ' 30" , P 003 '1353700 ; 61.7918 - ll0.07 : 0 56 ': 1.3400 � �i� �= 23.0632 ��..22.4225 �3 , , , , , , , r ; ; . ; ;r � , ,: __ __ _ _ _ _ _._. __� _ _.. _ �__ ..._� �� _ a_:�_ - �_ .�. ._. . . :. _ _-. � 30" P 005 211.2600 , 101.89 99.6277 1.02 F ----- ' 20.7577 ,202960 �5 E � � ; Diam � . _. 3 ORDINANCE NO. 5611 ..�:..:: ...... . :.. � __:::�. ;:... ..:.�_�.�� .......,. ...�.:: . .._��..� �� . _. _ _:: ..::. r. .::.:_: , ' From ; To ��Rch Loss : App Bend Junct Loss � HW Loss Elev Max El `�; � �' Node ? Node �� (ft) ? (ft) � (ft) (ft) (ft) (ft) } �� _��.. ...,,,__ ...,�____.._ �.... ., ��_._.. _�.r...__�. _... __.� ..,..._.___ .�..__ .. ......... .... ..._. _ ° 258.5000 = . . ...._ __...._ �_.....,, _.__ _____._ �._..... .... ... ,._�__ ... ........, ....... .... ..... 'No approach losses at node N-003 because inverts andlor crowns are offset. ; _ _ _ _ __ __ _ _: �_ __�;. �_,� , ��e ,__ a_ _., e� _�_ _�..�_ _.�._.. _�� N-005 Outfall 4 2822148 ; ------�� ---�- ------ 282 2148 284 5200 = ......�.._..... _.�...:w._.__ „. �.� ��_ ..r_.... .... ,. _.:: ; € .�� € :::� _.....__��_.___��. - 320.9600 N-Ol1A � N-005 ( 321.0049 < 0.9427 � 01312 z ------ 320.1934 _. _........... . . .. ._.��... ....... ........ ... ..� ._,_.�. _.�.�.. ._......., ..__ _... __ „�....�_._ ...., . .. No approach losses at node N-006 because inverts and/or crowns are offset. __ _ _ _ _ __ _ _ _ ; M. �N-011_ d._N, ,��_� � ��. � �� _,..� _ . _ N�,..,�� ___� ��..._ ___,._,.�.��_.__ ; N-0llA�; 333.5197 ti ------ ,� ----- ; - --- � 333.5197 � 335.3100 ; ;.._, � � __�,„,.,,,,,,,,, .� ;� . . :::� .,_,.,,,:.: �.�E m:_, ..._.r �c� i.�. .��,,,r:_. : , ,,..,,, N-006 , N-011 ! 336.8504 ; ------ , ---- ; ------ ; 336.8504 ; 340.0000 ; �� ,:::. ,..._, . �� .,:;;.:r ....,.r�_ ..�:.�„ _. _...: m_.:: � .:,,.. :. ----- 367.6300 ;. � N-007 N-011 � 335.9533 ; ------ j ---- _ - ; 335.9533 ' __..... .......... .. . ...._. __��,., _....,. ..._. . . ...,_.. ___.�_ �........ ......_. ._.. ....,m�M �...._ __....��. .�..... . ...... ..... No approach losses at node N-004 because inverts and/or crowns are offset. ___ __ _ __ _ __ _ _ ; �_., � .m., �e.�. �.��_,_ ��_ m� _ _ w, ;� _�.. _ >__�_..,__,.�.,..,�_ , ' N-003 ; N-005 , 327.1708 ------ ----- ; ------ ' 327.1708 ; 328.2700 ; _..:::: : ...:: �._,.::� -:.:::: ,. - ,.�:: . . ;:. ... ;-.: } N-004 N-003 � 343.9864 0.9732 � 0.0055 `; 0.1666 ; 343.1853 ; 350.7800 ; �...::.. ; _..._ti�: � �;;� .:..:, r�: �µ _ _. .., _..M� ......M ...... . . �...... � N-012 N-004 ` 377.8257 ; ------ ---- � ------ 377.8257 r 380.0000 ,; __ __ � _ __ ..... � . _ , ____ . _.. _..__ .__.__ _ �...._. �.. . __. �� N-0lA N-004 : 353.1676 � 0.6719 0.8655 0.3412 =� 353 7023 355.0000 '� �� ;.::.... m�..� �.., k:... -::. �. ._ � . .. .., . � . ... ; ' N-001 , N-OlA , 372.7299 ------ ! ---- � ------ „ 372.7299 ' 3803300 � � , �..:m:M ... .., � .��::x ��,er; ..._. . :.:. �_ ::M� .: M ... . „ N-OlA , 364.1122 ` ------ ---- ------ j 3641122 � 366.6600 ; ; N-009 ' � � � __ __ _ _ _ _ Layout Report: Proposed Preferred Alt ' .__..�:. : �.w:;.�_mv.� Event 'Precip(in)� 2'year ;2 0000..,.__._.�� 10 year �3.0000 '� _..._:.: _..w�....�..._., ;25 year ';3.5000 ' 100 year;4 0000 4 ORDINANCE NO. 5611 Reach Records Record Id:P-001 ._........ __._.�._. _...... , .. ....... r. �...� ; Section Shape. `Circular f ____ ._._..._.,_. ,..,. ._, w_... _........ ... .. ... ..,.... �.... Uniform Flow Method ;Manning's 'Coefficient. i 0.0120 ._�.�. _,:;::;. _.. . ..H.,... .::...:. �_::::�::. ._:::.;.. ,;, �.:� �Routmg Method `�ravel Time Translation'Contnbutmg Hyd, '; �m_ F��. .�. ..�:�� _,,..�.� �� - �� ___..�� ;.;,:_ � ,_.��:� e�t DnNode �N-OlA UpNode 'N-001 ' _..::::� �....._ . ...� . ::: _:::.: _.� .,,_,_;� ,...�: ......... ___� __�:v. ..,_, Material Conc-Spun Size 24 Diam ,..... . .._...._ , __ . .,; _. _.... , .. �.,.... r .,. ';Ent Losses ;;Groove End w/Headwall �� Len th 1470.0000 ft�� SloV �" "� -...._.m,� �m�a�:�_,�e,.z m„_� v__� , �. g : pe '':136% � �..:�:. ,.._, ..� ., ._� . :::: r ..;..�.� ....._.�:� _.....�µ� _........ ��. _:.w:__ __, Up Invert „370.0000 ft Dn Invert �350.0000 ft i �� e�� ti. _„e,_ �..,.�. � e� �.ea,.. ., , , Conduit Constraints � �..:� �,.._.. �.... .�� _...:: ... . . ._:�.:: .. ��:� �._..:.� ; Min VeT Max Vel Min Slope,Mu�Slope�Min Cover; ; t, __....., r... �. � �::. ...... .. . .� ,...,..::: _ M._: ; � �2.00 fds' 15.00 ft/s;0.50% :;2 00% 3.00 ft ' ........ „ . .....K ..:. _.... _........ ....... _... _...._ ,Drop across MH ;0.0000 ft _E�Infil Rate ;0.0000 in/hr; ' _�� : �� __,._��,,� �� _..�� ,�.�.� __,�_ ___�� :�, �� 'Up Invert j350.0000 ft �Dn Invert ;370.0000 ft i � ,.._�:: .r..�_.µ. � ...�:..., .�� ,; , Match inverts. � , Record Id: P-003 ��:;:�.; _.:;:; �_:w:, u ..__��__... ., :;:�. < Section Shape. Circular i _..,.... _...._ _... ... . . ... . ...__._._ _....... __... , M... _..;. Uniform Flow Method Manning's Coefficient ;0.0120 �Routing Method: ;Travel Time Translation-�Contributing Hyd j�, r..,.,,� �,.,_„. ...� ,. �... �,... �.._.. . ._._.. _...� �.,_ . .... , _ ;DnNode `N-005 ;UpNode N-003 � ..::m. ...:::_� ...:. ..:�. ,�__:�:_ ....m:� .,: _.,...::� Material Conc-Spun Size ;30" Diam _ __ e_��._��.em e, w e�E� �� ,.: ,m�� ,��,_.�-�m ��,�� . � ��.:, .��„m_��, €Ent Losses ;Groove End w/Headwall ;�a_ _ _ _�_; . .:....�. _� .m ��.�_ ,�� ,� �� ._.��; � , ;Length �750.0000 ft Slope '6.10% ..�.�.�: �,.....,;: .,..:.: ,...�...� .::�.:::. .... . ::. . ....::. .._:;:. ..:; ._:.: Up Invert (320.7700 ft Dn Invert ?275.0000 ft ; �.._._.,, _. .,_ _�,...�� _._._.,_.��... , u........ .._._.. ..3 �...... _ _:�_. .. ....... . Conduit Constraints ..._ _..._.. ..,..., m...__.. _.:,.. . ......�......, ;Mm Vel';Max Vel Min S1ope;=Ma�Slope,Min Cover, �. ��_��_ � � ��._._, ::::.. �.,:;___ ��_ ;2.00 ft/s'�;15.00 ftJs i0.50% �2.00% ,3.00 ft ' r . ,.;�.€.. __,:.�µ� ___.._.:: . .. _.;- �.m:.:., ; . . . .. . ,...�,;, �..,..,.r� �: . !Drop across MH ;0.0000 ft �E�Infil Rate ;0.0000 in/hr _ _ _ _ __ ,�_. _�__. __�� .� . . .�e� „ .��.. ,_�_�._. � _ _, ,. � ___ ;Up Invert ;275.0000 ft Dn Invert 320.7700 ft = Match inverts. W� ..._..__ 5 ORDINANCE NO. 5611 Record Id: P-004 ......:........ : .. ...:. ._ ..:.�.._ .:::... ySection Shape: '€Circular ,�m� �;m..�� _....�_:_ __�� _�� .:�� ____...�__._.__ _.,.__. � _.. °Uniform Flow Method:',Manning's Coefficient. '0.0120 ' _ ,:.::; ...::::. _ ....: _.,;:.m.; . ,.:m:�: .... .: �.._:: _u. ......... __�::.:� ; Routing Method: ;(Travel Time Translation=Contributing Hyd', ; _ __ _ _ _,...:. _,.. . .. _.._. _......... .. .._...... p.. ...,,.. .. ,,, ..... . . , DnNode EN-003 �U Node 'N-004 ; , _�M ��.,.:_:. _� __��___;�� ,��.,�,� ��,�.__.�� _�:: �Material �Conc-Spun 'Size 36" Diam ` .��_.. .__ ._�_..:. .... „ .: ;: �.......w r,....�w::� ._,._..�: ... �.:.. _: ...�.::. ........ : �Ent Losses Groove End w/Headwall : .. ..,::...... ,:: ..:;::.... _:�:.;:� _::�:_::. .. .. . :.:.: }Length 770.0000 ft Slope 1.50% i�Up Invert ��340.0000 ft ;Dn Invert ��328.4500 ft ; � �._., _ ...�.,.... _.......... ....._____�...__��..._...�..,.,,,.,.._..._. _., ....._.,.,: Conduit Constraints � �_. �.__�. _�_, � � . ,. �e� e��_,�� ,�� _�.. � N1in Vel��_MaY Vel .Min Slope M�Slope;Min Cover; ;�� .cia;i ..,,:,: ........:::: ......:�t._ .,,,,,,,,,�.r ,,,_,.:�:: „'.,;;i; ,,,.;..,:; ,g � � 2.00 ftls''15.00 ft/s,0.50% 2 00% 3.00 ft _._..� ___��., .... _,... �.._� ._�. .,.�._.� �...��... �. ;Drop across MH :0.0000 ft `E�Infil Rate `0.0000 m/hr;; ...:,..,. . :. ._...::. _.._:;:_ _...:� ,... ...: .. �...:_ ?Up Invert ;328.4500 ft Dn Invert `340.0000 ft: __ _ _ _ _ :. ,��_.,� ___.__ �� 3Match inverts. Record Id:P-005 __ _ �....,,,_ _.,,. ...... r:..__..-� _......__. ._.,.. �,,,....,,: Section Shape: ��?Circular � .__,._. . ....._ ., .._.,,...._�. ..�_�_.._. ._.... .._. , _.._..._. �Uniform Flow Method:'�Manning's ,Coefficient. £0.0120 � _ __ _ _ __ ..._....... .. ..... .... . .. _._._.._. _... �.,,,,,,, ....... . ._..... .._.__ ; Routing Method: Travel Time Translation Contributing Hyd: �,� ______ _N_._ �.� � �� __�_� _._�_� ___,._ ,.__� . �.� , ;DnNode {Outfall ;UpNode =N-005 _.W._ _..._ �.. _..._..p.�r__..._. __... ��,�... ;Material Conc-S un Size 30 Diam _...... ..... . . ....._. .... .�._.,_ ... ._�...r_ __ _ ... _....... . ,�,._... ;Ent Losses Groove End w/Headwall ........ ... ........ .. . _.__ .,.._ �_. .,.., .. . ... .. ___... ;Length 300.0000 ft Slope :5.00% �.__ _�._, a.� ,, ,m � �.. � �_._� .� _.�_ ,_,_.... .. , � �..a �Up Invert ,271.0000 ft Dn Invert '256.0000 ft � �.,_ ___�,__.,� . �. _... �_.��..��. _..___.,_; Conduit Constraints .. ; . �..,,_, .,.,,.._ .... . ,..,. .. _.__... _......_... Mm VeL;Max Vel Min S1ope�M�Slope fMin Cover; , .m�::. :..:_. . ...: ..:: _.:::. 2.00 ftls :15.00 ft/s 0.50% �2.00% 3.00 ft : , , ; :� _�;.- �...,._�w.....,_.� � _.. . :.:: .::.:.: .. � . - �.._:..:: �w;, _.,,___., .,_.�._� Drop across MH ;0.0000 ft � Ex/Infil Rate 0.0000 in/hr_� � ;..:: rc:.�,_ .x.�M_M�_ ::�... .._........ . ...... . __..:�_� . _.rc.x:: ._�..�_.: �� _....,_,:; ,Up Invert �256.0000 ft Dn Invert ;271.0000 ft ; Match inverts. � ; 6 ORDINANCE NO. 5611 Record Id: P-006 .....__.. . .. .,.. ...., ..,., Section Shape: Circular _�.�..... .. _..__�� .,._� _.�... �.._�.. _ _...__ _�_ �� , :Uniform Flow Method EManning's �Coefficient 0.0120 , _ _ _ __ _ __. ; ... ...................�__...__ _._ ...... _ ...._ ......_..._....,..�._.,,.,.. Routing Method: 'ETravel Time Translation Contributing Hyd': ...... . _.._.__.. �.. ..... ...... ... .... . ... ...,.. �,..__.. ��DnNode ��N O11 UpNode ��N 006 ' �� ::.�:..� ._...�.�:. , . _�� _� : �_ __� �_.___m_m__.__�______.___.�_ __...... �._._. .�� _ m� ,Material ,Conc-Spun ,Size i18" Diam ; �._::::. ....�_�� ._;�� ..€_ ..._..... :. ... .:...0 . ..... .u. ... �.,.w� .::::: _� ...: �.��:W.� ....._.r ;Ent Losses ,Groove End w/Headwall ._., ..,.,.... _..._ _ _.. . .... .... .... ....... .,..... _; _ ,...___... 'Length ;450.0000 ft ;Slope �0.90% ;� °�� ._,�._ ��.:.� _�,ae ��:e �.;:��..:_� _.,,�� __:�� W,..A�e e.__�� m. ,� �e..� �� ;Up Invert 335.0000 ft ;Dn Invert 330.9500 ft j ,...::: .,,�. .::::... ._, r,,..�;. _.::. _.....:,. �: ,3 Conduit Constraints � f } y.,,......: ; ...,.., e...�....., ... .._,�... ...,.»,.- ........�.w.., r...,.. ,.,e_.� €Mm Vel_�Max Vel ,Min S1ope��Maac Slope Min Cover; # � ,,. > ...._..._. ....... , . _ E2.00 fUs:'15.00 fds,0.50% =2 00% !3.00 ft `; � ....: v... .::: �.._�_ �_.: _.. :.::� .. _,_�.,.:; .;: _�:r� 'Drop across MH ��.0.0000 ft E�Infil Rate ,;0.0000 in/hr 3. _ _ __ _ __ _ ,. ,. :::;...., „ -:: . „ ::.::. ,. .:....::.. .... .,,:. _ ,- ; .::.� _.., Up Invert 'E330.9500 ft DnwInvert ,�335.0000 ft .' ' _ _ _ _ _ __ ; �Match inverts.�� Record Id: P-007 _ _ __ __ __ _, . .__.... _.... . ....... ., Secrion Shape: Circular ..._.. . . ...... ..�.. __.. _. . .�.... ......... ...� .. _.. _ ._.... ...., _._�.... , Uniform Flow Method ;Manning's :Coefficient. 0.0120 ' : _ _ . ; � __�� .,,,,,, ......, :, . . ..:�:. �:� __...w .... .��,,,,.., Routing Method: :Travel Time Translation=Contributing Hyd� � _.,,, .__. ..e_ a �___ _ _� ..,._ , w..� _�_ , �� ; _ .___.e DnNode �:N-Ol l '��;UpNode ��N-007 ' Matenal ��;Conc-Spun ��Size � 'ZA" Di � . , am 3 ......:.... ... .�::: ,..�.:::�:;�.,,..., ,.;,,.:f_ „....,�.�.. . -.......�:. .,.-, ,�.;:-:.. .--,....,,..�,:: ,,;:;.:,,;, ,.:..::;�,;.....;,.,..,.... ....:::,:: .,..,,h�„_� =Ent Losses � �Groove End w/Headwall ....:..:. ..........��.- ,,.,�.;;:.;,,, ,...........�.,,,,,,,,, .;.. ..... .:_:: , .. ..,�_:;, ..,,..::.::..,::: _„_..:;.:;,;;.:....�...,,.._..:;;.:.:;w ,..:.:...:� ...,,,.:.,�.,i �Length ;2000.0000 ft :Slope ;026% ' __ _ _ _ ; ;Up Invert ;332.6300 ft � Dn Invert m'327.4400 ft '; _ _ _ _ _ _ _ ..._..,.... _. �_.� �� _��,_w.�._. .,. .... � �._.. Conduit Constraints �.... v_,..u... _. � ,.�__ �....__ _.._..,,_�, ;Mm Vel';Max Vel Min Slope';Max Slope'Min Cover'. ., .._,.,. . . , __,_... ,.._ ._. ...... _.; '2.00 fUs ;15.00 ft/s;0.50% ;2.00% 3.00 ft �_,.,,.�. _�_....,_ __.._.._ ......_.. . � _ _.__ __.,�...�. _.�.. �_� ; Drop across MH 0.0000 ft E�Infi1 Rate ;0.0000 m/hr'' ..._. .�.._............... _. ..�... �.__..,. �.,,..._� ..�._�._ .. ,Up Invert 327.4400 ft Dn Invert ;'332.6300 ft ': '��,Match inverts_�� 7 ORDINANCE NO. 5611 Record Id: P-009 .::: _....; � �::;� _ :..�.::.,. Section Shape. `,Circular ` ..��._ �._��: �E � __�..: ::,;: ._,.___M...,�,,.�__��_�,� � : :Uniform Flow Method:�Manning's �Coefficient: �;0.0120 �� ,. _ _ _ _ _ _, _ _; _........ .._.,._.� _._.__� . _.,.,,.. �...w. _.... ..,_,. �_. _.��,. Routmg Method: Travel Time Translation Contributing Hyd' � �.. _..___..:� ..__.�: _,. ._::, . .. :., p;:: . ..:: ,...�: .._.... FDnNode ��,EN-OlA U Node '�„N-009 � � �� __.��__....�� __._� .. .. �u ��. �w:,__� m.�� __:�:m._� �_,,� �� Material �Conc-Spun Size '!24" Diam �; H_�_._..__._�._ _�__�_._. _�. ...... . ..._. . ....,, ��,.._.__.. .... _._....._ _.��,,._ _�; Ent Losses ;Groove End w/Headwall ......::� _��::::w_ _��.:� ;. .. �;....,. N�:��:� : ___,:�� Length :820.0000 ft Slope ;0.85% � , .�;E .:� .. U�Invart :� ��„�36L6600 ft � ,Dn Invert .d �.��.A w �e - _,__m_ �,�.,, p � ;�354.7000 ft ` �� _.��,,.._.__._._ _.._�. _._._.. ._ _....... ..... ..... ... ...... ,, .,,,. ; Conduit Constraints ; � _ � �Min Vel'M�Vel ;Min Slope';Max Slope Min Cover; £ �_... , __....... ..._...__ ; ._... 3(2.00 ftls' 15.00 ft/s,0.50% ';,`2.00% '3.00 ft � :_�:;:. _.__,: �.....:. _...._.m�. . �:: „ ..,..r . ,,,. ; _.._._. ....._�.:� .____.�; �� ,,,... _::.. ... .. ::� �. ..u. .. .K....- ._�_..�� Drop across MH ;0.0000 ft EZc/Infil Rate ',�0.0000 in/hr' _....... .......... ........._. _ ..,......,. . .... ... _; _.._.__ x .�, �Up Invert E354.7000 ft Dn Invert :361.6600 ft ' _ __ __ _ _, _ : 'Match inverts. � Record Id: P-011 ' .,,r._. �,,,_,,. �.,_ _�,. .m..._... m._ w.n..... ,.. �SecTion Shape: jCircular ' ;._.w�::.____�.� �..____�, _..,� _,....�: . � . ::.. ..... ....,... ,� . ._._..w� � Uniform Flow Method: ;Manning's Coefficient. �0.0120 = _......� _.,.._. .... _. _... _,�..... � �.._._.. , Routing Method: Travel Time Translation.Contributing Hyd :DnNode � ��tN-Ol1A ��'� �� ;UpNode � � ''�N-011 � �� ..,. ...... _. ........ ...... €� ...µP__. , ..__. �. .. ..... . _.,. . ...�,,._�. 'Material ECono-S un Size '24" Diam .._.... _ .._..._K ..._ ....� ._. .�,. _��r,.�_.. .� ,.... ._.,� .�. ._.._ ..._.. _�,,..,_. _.....,_ Ent Losses Groove End w/Headwall _.....;,. ,.:..: _.:�..�: � _...� :::� �.:... _..:. _. ,.:... ..�:.,, .�, .:�.:::� __._, ,Length :350.0000 ft �Slope j430% 3 _ _ _ _,_�_ __ _,.,_. � _ �_�_�..� � . _ ._ _�._ ._ ��_ _ _� , a� �_.. ,Up Invert ;330.3100 ft Dn Invert ;315.2700 ft � � � >__ _„__._� �_�,_,._ _,__.��__.___._.�_ _�. _ .......� _ Conduit Constraints _.. _.._� ._. __... ,_ _.�....m_ ...... ......... ... , Mm Ve1;MaY Vel ,Min S1ope;Max Slope Min Cover'' _ 2 00 ftls 15 00 ftls 0 50% '�2 00% 3 00 ft � _�w _.��, ...,.�.:. ____�_�_��. �;� ��s ��.�: J ._ .... ....._ ._�. . _... ;. ...... .. ... ..._ ..____.�_ ._.._.._ ........ � . ._ ...; Drop across MH =0.0000 ft ,E�Infil Rate 0.0000 in/hr'. _..m. ............ . ..... � ._...,., ._„__ �,.,�_ _....._. ._._.._.. __..... Up Invert 3152700 ft Dn Invert :330.3100 ft ; __ ....,. .__„ w ,�_ 'Match inverts. � 8 ORDINANCE NO. 5611 Record Id:P-011A �....., � _.. . . ..._ _........ �... ._; �.Section Shape: 'Circular � � � .mT:.: �� :._ r_ �..�� .._ �� .�..._._____. _,_ �. : ?Uniform Flow Method. �Manning's ;Coefficient °,0.0120 � �..��: ....._�.: �:. ...___.� .._,.._�:: . .... :. _._.� �,..�: ; :�.:. __.. Routing Method: '(Travel Time Translation'Contributing Hyd� % ;: .,,. .::: :.:: ,.. ... . ;. __::: __..m. m::: �:. , ?DnNode ;N 005 UpNode 'N-011A � ' ... . . .,.. ,. .. . .... ........ ... .., ..: ...... ...3 �. �.__ 4..............._.�...�.�...,....,,.�.,�....�.... ......,_� .,__.,.,..,.. ....._.._.. ;--......._ ..m,.., ._ �,..�....... ., . Matenal '�Conc-Spun iSize �24" Diam = _�� ....... . ...,_.:�n ...� ..._... �_ u;:::.. ._u�_..;;��_._�_�: _�....,._ . _.�.�... _..,. Ent Losses �Groove End w/Headwall }._ . ,w_._..;.. �:_....:.. ...:�:;� . ..:�.� �.�:::. ..:.:::. . . ...:::: �:_ ...____:, Length 950 0000 ft Slope ;4 31% j _ _ Up Invert �N� �,�315.9600 ft �� Dn Invert tl �;275.0000 ft � w �_�: _ __...��. ; _.:..: ........ : __�:�w _.._..:_.... .. : �___..:: ._..__:mtt �........ ` Conduit Constraints ; ' I Mln Ve1 Max Vel Min Slope EMax Sl � �� 1 � ____ ��w _._._ ; � .. ` ope`Mm Cover; � ,(2 00 fds 15 00 ft/s 0 50% 2 00% €3 00 ft ', �_.._:� ..,.,, : .....:. .._.__..� ..._..�_.,. .. ..: _.._: _._rc:...� �..... �..._.... , ..__ ,. .__..... �..� ...�.. .. _....� ____..._ ......... . . .. , ...._�... :Drop across MH ;0.0000 ft 'E�Infil Rate 0.0000 in/l�r'� _�: ,. . ..: .,:: _.�_ __..___:. ., . , :::::: .:�.:::. �,._.rw, ._,..,:: ,: , ; � U Invert �275.0000 ft Dn Invert 315.9600 ft ; = P _ � _ :, �,'Match inverts. �� ' Record Id: P-012 __.._ . _ __..__ ��..._�. Section Shape FCircular .;� ... .. .�: _«_::: __ __._�_.�: ._ . .:: _._:::,� :;�� ........ . ... _.,�.._ ... ..i ,Uniform Flow Method: �Manning's ,Coefficient. ;0.0120 ' .___._.. � ....... ... _._, .., _........_ .__ .�_... .. . ... ...._,, �. Routing Method: iTravel Time Translation Contributing Hyd ��DnNode� ___ --- �N-004� ..w_._�_ - -� UpNode�� _:N-012 � _„µ,;:�..... ... .�_ �.�::.�..�,. ..:_ _ ...:: ..,.. :.: ..� _ �. , Material � ,Cono-Spun �Size =18" Diam =, � _�..__.. .... _.� ... _ .._._,. .. ,.�. _.,.. ...__.._ _..._., ._,_.�.�� . .... . ....... .. .�„. '.Ent Losses �Groove End w/Headwall �....._� :........... ,.. _.__� .,....... ...._ ...� _ ......._ ..._.. Length ;1900.0000 ft Slope 1.03% �.___� �.�__ � __ _� _� .�_ N.....ti ,_,�_ � �..._ _�.. ___.� _�: � _. .Up Invert `376.0000 ft Dn Invert �356.5000 ft;; ,_ ,. ; �,.......;: ; : .;; .:� _,..� ......... ,� ._�_._ ___. _ ��_�.�__ _.....,_.._�_�__.� , : Conduit Constraints ;M::�.: _....;:;,. _.. ::.:. _.;.:: _r:�:;_.,_�_...� : . . ._.:w��_:; �Mm Vel;M�Vel �Min S1ope��Max Slope;Min Cover.€ :�'. _H»::ry � ::. .:;,: ._..:. , ;:: ;.:.. ; ; 2.00 fUs :15.00 ft/s 0.50% ;2.00% `3.00 ft �_w __:.;: _,�„.:� . _._.;._ _�.�.;:::..,...� ._ _.:..w . _...: �_.�_. � :: ; Drop across MH ;0.0000 ft E�Infil Rate ;0.0000 in/hr= ' , .�..._�.. __._.... r�.,,. ... _... � ......... _....._. �...� ......:. Up Invert :356.5000 ft Dn Invert ''376.0000 ft '' ��Match inverts.� � 9 ORDINANCE NO. 5611 Record Id: P-OlA ' .:::.:.:, w�:.::.:. -:.._�..._ _.......::� _..:::�_ .x.:�:.:� . :........... ��=Section Shape: ;,';Circular ; '�� Umform Flow Method ,Manmng's Coefficient '0 0120 , �� __....:.� .:�;::. �:� __,.:�;� _.;:: _.....: ��,,.:.:. ._ �� _.,�..;I Routing Method: (Travel Time Translation Contributing Hyd, } ', �� _ _.,...:. _� .. .::: .... .. ::: ...::;. _�. .:::.::.. __.._� DnNode �N-004 ,UpNode N-OlA ,�._.�_�.. _.__ _ �.e..__ ... . __.�.. __µ.�., ,�_,�.__�_.T� _�, ;Material iConc-Spun Size i30" Diam '��, �� ,.._._.._��.._._ _.,.__.._ , ._..__.._ .... _...�_ ......... ....... ____ _.____._ _._..�_.._ , �Ent Losses ;.Groove End w/Headwall '� ' _._ ..:�...�.:�.. _x.... .�.. . ,.,.,� , .: ...:x_ _..... _.;:.::: _._._:� 'Length ,�950.0000 ft Slope ' 1.00% 'j �� __ _ _ _ _ �e�� e,e�m � ..��_ _. , ..�..�_ _�.__ �__._,�� _r °Up Invert '.;349.5000 ft Dn Invert '��E340.0000 ft , �� ,€ :. . �._:: ____..�..�.__...�.:� , s` Conduit Constraints ; �Min Vel��Max V �e�� d;� _,_��:� �� ,; el Min Slope£Max Slope Mm Cover� ' �:�.. .._.: ..::� �: _...� _._..:::: v ; 2.00 ftls�; 15.00 ft/s�0.50% '�2.00% £3.00 ft � ',; � �.....�. __._.. _v�� ...: _..,�� ____.:: ....._. �. , . ... .�: ;��..� _.:� �Drop across MH �0.0000 ft �Ex/Infil Rate ��i0.0000 in/l�r j , } __�:._ ___..:. ....: � ...m�: , .....:. ..,: �:� ..._�. Up Invert 340.0000 ft Dn Invert 3349.5000 ft '; � -Match inverts. i 10 ORDINANCE NO. 5611 Node Records Record Id: N-001 ...:..: ...�w �.:.:.:_ �.......: ... .._�....... .. .... :.... ::�_ �_ �:��µ.�. �..:_ .� Descrip: �Node Increment ;0.10 ft ..:r;:._ ....H m v�..::.. .::.:::: u:...: .....:::. „ .::; r ...;:� ..;;�. _ _::�; ;Start El. 370.0000 ft Max El. �380.3300 ft E ' ... . �n �:_� ..::�..m.. ..::. _..::;. . ..� .:::. v..::. .......::� ::�:�:� ,_ � Classification;Manhole Structure Type`�CB-TYPE 1-48 ,i �.:::m �,.w��: �� ._. ��;��.__,�_��.��_�.�-.� _:�:� __..:��: �� .�m:�� _:::� w Ent Ke Groove End w/Headwall(ke=0 20);Channelization`Curved or Deflector` ..� ...::::: �...wm ._.__:;:� ...._:.w u....._.. .:: ::.: w �_.,..-� _..,:;;�: ; Catch 1.5000 ft Bottom Area '19.6350 sf ... .: ....... . . _.., _._...... �......... ....,. ....,. ;Condition ;Existing Record Id: N-003 .....: �.::�. _..�:::.: �....: ::: __. :�:.: .._:r:; ..::..::._ _�::.�: �:E Descrip: ;Node Increment �0.10 ft ( �� ..��.: �,� ��:� .:��_ ��:_ ____.�� _ �.:w: ,,��- �::��; � Start El. 320.7700 ft Max EL �328.2700 ft '€ :::::: _.::�_ �._�:._ ..... .. ::. w , ..... ..... : _.. ..:.w _;::. _,...rv�. __...:,._,._._..� ' Classification Manhole Structure Type �CB TYPE 1 48 � ' .: ._: Ent Ke Groove End w/Headwall(ke 0 20) Channehzahon�Curved or Deflector� ;Catch � -1. , �:A__�� _ _., m �� ,..� �� _�.�� _.a �� 5000 ft Bottom Area ;19.6350 sf � ', ;...:. _.:::: _;�µ:M�r_.�.��.�.... _ .�... . .:.. ......... . _ _ . . :, iCondition Existing E ' �:::. .::.:� __..._:.�.._ . ..:_:. :.:�..:. �. :: �.__.. �..........................� .._,.,..�_ _..__._,___..._� Record Id: N-004 ' __�_ _v ._ . �w _...__. �_.� __.__... ...._ w ...,,, � .__ N� __�.� � _._.. Descrip: Node 'Increment 0.10 ft .... . ... __. ..._ �.... _.. . ,_. .._._. ..._m... �.._ Start El. 340.0000 ft Maa�El. `�350.7800 ft ��M ,Classificat�on��:_ _ ��,_ ,�� .��:._ ._.. � _. .. P �w� m� �_ _�� e � _ �_. � � �Manhole Structure Type:;CB-TYPE 1-48 , ..... .. _� ._ ,.�.w_....... __ ..... ... .. .... �. __.� �__..._.... __�_..._ Ent Ke Groove End w/Headwall(ke=020);Channelizat�on?Curved or Deflectar; , .:�::: �:::.�:. ,:::: :�., m .__._�,..� _..:::w. ......:�.: Catch 1.5000 ft Bottom Area 'i19.6350 sf ' .._.:.... ...... .... .. ... .. . ..... .. ..... .. _.._.. ......... Condition Existing ' Record Id: N-005 ;:..._� __._. _�_, r.., .... _Mx:.::. ._._.��:.� ,;,;... M...,. ..: ...... :.... .... :..: ;Descrip: Node ,Increment 0.10 ft _�._ . ..___ .�.._ __. �__ _ _ ._�... .. . . _..�. .. .__ _._�� . _._... Start El. ''271.0000 ft 'Maa�El. :284.5200 ft ....._. _........ . ,._ .._, . .,... ...,..... ..___....... ... .. .... Classification Manhole Structure Type CB-TYPE 1-48 < ._._ ��_�_�.�. __� . . _._..m._. �.... _.__._ _.��__._ �m. �,,...... .,... ......_...... .. .. ... =Ent Ke Groove End w/Headwall(ke=0.20)',Channelization;Curved or Deflector; __ _ _ _ ...m._..��.._ _,_�._�.,.._...,,..._� �......�_ ..... _....__. _. _,� .... ..... ...... Catch 1.5000 ft Bottom Area 19.6350 sf �_..__ ...... ,.. ....... _....._. .................. ;Condition E�sting 11 ORDINANCE NO. 5611 Record Id: N-006 .._..... .....�. ......... . .... ..... ........_ �...�.�.. �.... .__ _�_ __-_____� .M, ....._ �Descnp: Node Increment �0 10 ft ��,; ..._... _. , . ...... _....... ...... _...... .. ___..._. �..., ._ ,�. . .. ....,. ; Start EL ;335.0000 ft Max El. 340.0000 ft .... H......_. . ,,... _,..... .._...__ ....._,.._ x.._.. ..:_._..._... . ��Class�ication Manhole �Structure Type ;CB-TYPE 1-48 �� _�� .__ Ent Ke Groove End w/Headwall(ke 0.20),Channehzat�on Curved or Deflector; .� _,..��::. _ _____� ___..�..�,.�.__.�� _..m:w _ ,;::; .� .... � �Catch �� ;1.5000 ft Bottom Area ?19.6350 sf f ,,,,,.,,;;. ,,;,:,;:, �.,..:..., ,,.;.::: ��;;;,:,,;,, ,,,,,;,;;;;, ,,,,,,,,,,,,,;;,,; ,,,,,,,,,, ,,,,, ..... ..:.... .. .... . 'Condition ,E�sting ' �� Record Id:N-007 ...�..... .... . ..... ....._ _....... _.. ,,.... ..... .... ... .. Descrip: `Node Increment 0.10 ft _� ��._ r,.m� _,..__ �_� ._�� _ ��,w ��_A_ � '��SStart El. 332.6300 ft '�Max El. °��;367_6300 ft ;�.:..:.�_.._r __:�. .. ; .:.::. . w,;::. _..�� _ �.__.;�:__._._.�..�.._._�..�:: �.;::;; ._.;:�� _._. :::... �. .�_� ...:� Classification�Manhole ,Structure Type =CB-TYPE 1-48 '� ;: _�_..._., ...::.. ...... ... ,:; �..,,�� _,�.:� _m:::�_ � �::.. �:::�::.,. .. .. :_ ;Ent Ke Groove End w/Headwall(ke=0.20) Channelization€Curved or Deflector� , �._._ __ �_ ..�, __ __� ,�_,__�_��._ � � w.__� P„ �.�..�_. , ._. ... Catch £L5000 ft Bottom Area ;19.6350 sf ..��_.. .. ....._. ;...... .. ___ ...... _.._....._ _.. .....�_..._ ; Condition °Existing Record Id: N-009 __.�_ � �_ _�_ .� � �..__ �..� �.�.._ _� _ _� �. , ._._.._. ,._...... ; Descrip: :Node 'Increment ;0.10 ft ..,.�._ �„,,_, __.._ ....__ _.�..�.. ..�.. __.,._ ,. _..... Start El. :361.6600 ft ;Max El. 366.6600 ft `!Classification:Manhole �� :;��Structure Type ;CB-TYPE 1-48� � _..._._..�. �_.._ ...�... . . .,_.._ _ ...__ _._.__.. ._.,,.._ � �,_,.. .....�__ =Ent Ke ;Groove End w/Headwall(ke=0.20);Channelizat�on�Curved or Deflectar� ....:. �,....»: : :..:;.:. �.:.. .....::: � �::.�.__ ,.�:.._ :w�; .... .v::: Catch 1.5000 ft Bottom Area �19.6350 sf ... ,�.....,..�. �Condition Existing t __ _ ; Record Id: N-011 _... _._... _..__. . .......... .... . . . ..._ r...... ,__. ....,. _�._._... ..; Descrip: Node Increment '�0.10 ft ! _� __��:__ _�� , �:W�, �, _._„ . � W�. _._::: -:_�� _..: ,..: . - ....� W��_� Start EL � � 330.3100 ft M�EL �3353100 ft , ..:.:.. .. �:;.. _::.:.. . .....:::. . ... ..:: ::::. .......... ..... �.._: _....:,.� .._.::.:. .,...;: ;Classification'Manhole ;Structure Type =CB-TYPE 1-48 _... _.._ .....� .... ._.... .. _ ....... . _.. _...... ..� ..., ..,., .�,,,_,�. _,._. _., Bnt Ke Groove End w/Headwall (ke=0.20) Channelization:Curved or Deflector; _.�... .. ..._, �.. ...,... _._ __. . ...... .....�... . .....� . ...._ _.___ ,.�.: Catch 1.5000 ft Bottom Area 19.6350 sf . ..... . ......... .... . . _._. . Condition Existing 12 ORDINANCE NO. 5611 Record Id: N-011A ..:..:.:. ,::.�...,. � �..�..:.� ,::��:�_. :...�._ .: .. ......:: _...�:�.� . ;:.. :... , Descnp: 'Prototype Record Increment ;0.10 ft : . ....... ...,..., w._.... ..._... ...._...._ ,.. .._. ,:.:. ....... .._.. �Start El. 315 9600 ft �M�El. �,320 9600 ft ; � ..::__ ....�� ,._.u_ ._::. .._..�. _...::�:: _.. _ , ;:. _.�:,.. .:.�.. ..._...� Classificatron Manhole Structure Type ;CB-TYPE 1-48 ;� �_..� ..�� _____,� _.� _..�..._ �__ �._.� _._,_ �_,_,.��.�.�.._�__ Ent Ke Groove End w/Headwall ke=0.20 Channelizarion,Curved or Deflector; � ): , _:n:::._._�._�� .�:rr .._::r.� __..,.w�m .,,,;.: _,r..._�. _..:::........ . ..::� ._�...:� �.:; ;Catch 1.5000 ft Bottom Area '19.6350 sf i ._.__... .._.... ..._.... _.......... . ......_......_..._. ,,Condition E�sting Record Id: N-012 ._::..:w :..._:. ,._.::: .�:: .._....:: :....� .::.::: � .:::: .:..:�_ _.::.. � : Node ; crement �0.10 ft ; Descnp _ _ .. ��.��_�_ �.�_ �r� , . �� __,_..� �� ; 'Start El.�� :376.0OOO�ft :Max EL ��;380.0000 ft ,._.._ __.__ .. .__ __�....._ ___,.� _.� ,..._ ._ �..�_ .,�.� . ........._ ... .... __._ ._... _ ; Classification;Manhole Structure Type jCB-TYPE 1-48 „ �::; ..,,.��:: ;,,:;; ....::.;; .Mti� _..�::: .. �: �,:;;;,: ._. �Ent Ke =Groove End w/Headwall(ke=020),Channelizat�on'Curved or Deflector; ,.w.:;;, �._...�:... .::;;�:...., ;:::�..�; ...�M: ,,.e -��n. e.e......,�:.�..:.... ......�.;. _..,,:F::, ....,.;:'.�, .,. ...�.:::�.:.:.:. ,...�.e..�:::.:::e..... ......e.E . �;Catch `1.5000 ft �Bottom Area 5;19.6350 sf ;__._ ..rv.::::. ..._.�: ,_... _... .. _._. ..� ��,�.:. ...:::.:.....�._�. ; 3Condition Existing Record Id: N-OlA '��Descrip: �Node � � �Increment �;0.10 ft � ��, .. �. _.. �.�,.,.,. _....... _...., t ...,.. _.. ..,.� , `Start El. :349.5000 ft Maac El. F355.0000 ft �Classificanon�Manhole � � �� Structure Type �CB-TYPE 1-48 � __.,...._.__.._ _ ; ._. . _.....�. ....... ..__.r_.v _..._.,,,., r,....._.. _ . _....�. ..__..._. Ent Ke ;Groove End w/Headwall(ke=0.20) Channelization;Curved or Deflector,; .�;.:. .�: f..».:.:: ......... _..... �...:..., _...�:.::: m.�:,. . ._,K.:.. ,::: _..,E Catch 1.5000 ft ;Bottom Area 19.6350 sf � �� .w,..::.w .........:.:..�.., �. . .. ., ::: ,., ..,,,:. _:.,;;;. ��_.,,.,.. ; _ <, Condition =Existing ( Record Id: Outfall . .... .._.... .. . ...... .; Descnp ;Prototype Record=Increment�_�0.10 ft � , . _�_ ._�W W� _��: � _ _. Start El 258 0000 ft Ma�c El `270 0000 ft� ,.., _.�_._.. . . ...,:.. _.. .. .... .. .._ Dummy Type Node 13 ORDINANCE NO. 5611 1 Event Summary _._��r:�_ �:�;_ �_.,._:� _..�_.. �,:._ �::::..� .wm ....:::w� E , Event �Peak Q(cfs)�Peak T(hrs) Hyd Vol(acft)'Area(ac)�Method;Raintype:` :.� _�_.:� �:...: �;.��:. ...::: :».:w _...� , ., x:.::x .; 2year : 10.4257 8.17 5.3837 � 44.4800 �� SBUH ,�TYPElA; �� `_:. .__._...: ,_..,,� _.,,_�; ;.: . ..._ .... � .� .�:. �.._.... € _,_.,_::....,�E 10 year ; 17.1903 817 8.7917 � 44.4800 , SBUH _�TYPElA� � 25 year E�� 20.6655 817 10.5397� �� ,..�__...... ..��_ .,.� �. � = 44 4800 . SBUH ETYPElA[ _ , , .:_:.:. ,:;._ __._�.� ._:_m. ...:::. ..::. __......... ......::. i100 year; 24.1797 ° 8.17 12.3061 44.4800 � SBUH TYPElA,; ._�� ._._._�_� _.�� .......� _�w� :::..._ :::... _...:v�M. .._._.::. _,_,,.;�. _....::...�:._ Record Id. 1 __.. __.._..., _...�._., �,... _... , _... .,.____..�.. __..., ,_r._...�.. _ ..._ ..... . . .. .... ... '��Design Method ' SBUH ��Bainfall type TYPElA ....__. __...._. _. ......... . _ .,.,,... .. ... .._._.__ ,_..._... _._....._. .,...._.,, ...,. . __�. ,,, _._._..v ;Hyd Intv E 10 00 min qPeaking Factor � 484 00 ; r�_�� __._„�:; ..,_��.mm�_�..�_.:. ....,v..: __...�_ . W .._..::: ,_�. _.___.�: .._.�.. � . .,.,::::.. �.____ _ ..�� _.......�;�,..:� � Abstraction Coeff � 0.20 ? } . �_.__ _...�ry .;: m�: _.....::: :.,..:: , mw::� ..,.._::: �:::. , x. .::.:�,. ,.. ,::: _.. :�;. _ �; Pervious Area(AMC 2) j 12.87 ac DCIA ,; 31.61 ac ; __.:::� _...� rc::. , ,.: _ ......:.. ... .... :: ....»�. ..�...� :. ..m.,, r..,.�.,,,,. . .:. .:µ��_; Pervious CN ` 82.29 DC CN ; 98.00 �� ._... ....... _......__ ___._... _...,. ... ._:_ _ :_..._ �.___... ._____�� .. ....... .. ..:.. _;... .._ ;Pervious TC 34.79 min 'DC TC ;� 34.79 min i,,,..:.� ,,,,,....,.,.:. ... ... --.. -:.:�- ..;,;: :;�., �.. .�.. :: ......-�..«., ....,� .��.; .; .. '- .. . '....._ ..�................ „�_._'. " :� �� Perv�ous CN Calc f__� _ __ _ _ _ , ,�__� �m�� , _w me��,._�..�.r .. :__. �:,.... .�e_,�.,e _d.�, �� e_w , , _,,,_ �._� �,,�;.., ��_, ; Descript�on SubArea Sub cn �,; E E � � ,... __........___..�....,.�_.�___ _...,.;. ._...�.�. �.::.:. ..�r�._�...r�::_ ._�.�M�:� , _��_�:� ...._._.....�..,.._..,: '� Open spaces,lawns,parks(>75%gzass) �' 6.09 ac 80.00 � ..;W� __„�� _..�__._� �.._��,�� .....��; :.:�... . ....:. ......�:� ._�:;;� : ..: ... �:m:;:, „ ..._w�:� '( Open spaces,lawns,parks(>75%grass) 5.98 ac � 86.00 �_ __ . ______ ____._. �___.._..._.,_ .. ... ... ... ��.._... _ _ _.,.r, �. ____ __.� __... �_ ; ' Wood/forest land(young 2nd growth/brush) 0.80 ac 72.00 ' E�:�..._..__..� . ___..�._;.�: ... .. :. :::: _...�..� .. .:..::.� �_....:.� ..�.�:..� , ..:; .. ; _....._.. _.�,� ; Pervious Composited CN(AMC 2) 82.29 ' �, _; ��.�,�,�,_�:,�� _�� „�.d. �__.._� ....�_ ,, , ,. , i ,,,,:'„ . ,,,,.,.:;; ._.:;..�,,;, . ,,,,.,,�._;;, . .,..__._:�::., .......:: ... ....'... .,,,., ,,,.";. . _�,,;;,, ..,�,._.:::� _._.::: . . .__..��. .. .... � . . .,,....._..... .,..... ,.,_._,_ � Pervious TC Calc , ,� iI_�W�,;...._............:..::.�.,. . ..........:.: ..........:.:: ,,,,,...,.:::. ,....;:.; �,;;,,,, .,. ,,,.:�.::;. ..,.....,,....;.�.. ..._.....:;µ, ...,....._:� ..,;.... ,, ._.,....;;:;; .....,,,_ ............�:.,,,_. �; ��. ! Type Description � Length Slope Coeff � M�sc TT ' _ _.__.:.� ��..�; ..,._._ �: u:.�� _._�: �,_;;::� ��.; :. :� ....:. .._...:� ��Sheet =Short prairie grass and lawns.:0.15 F250.00 ft ,1.60% 0.1500 �2.00 m 28.20 min .: ' �: __._._::.: _,.:;:;;: £ .:..... _.....�. ..... .. ::: ... ....:w� _.n::.� ;�: �.�._��w: �.... r: ..::. ,_�:.�. :� _..:;: ; Shallow ,Short grass,pasture and lawns(n 0.030) ;280.00 ft ;4.30% ;0.0300 , 2.10 min ._...... ......... v� .. . ::.. .... _. �.. __._._., .__.. .:. �-:_ . Channel(interm) Concrete pipe(n=0.012) =1350 00 ft 1.40% .0.0120 . :4.48 min ; ,._._ .....____ �___��.� _......__ __��, _. ..._.. __...._ .._......___ .. ..._,,,,�..,. �_�_� ....., _.._. __.,... „ ( Pervious TC �34.79 min ; _.... �..___.. __.., �.,. _.,.. , � _. _.... _...._._. � �...,.�� .,�.,_ . .. � ... ... . _.._.�.. ........ ._.�.. Directly Connected CN Calc _..,.. ......�..� ....._ ___.r._. _ . _ ....� .. . _. ,....,__�_�w ; _ �_ �.. Description SubArea Sub cn = ...�...:: ..�w�_ m.::: _,;:� _... :.. ..... �.... c;:: �_ ..�:.:: _...�:,:: ...., .,, w.: ;i Impervious surfaces(pavements,roofs,etc) 6.40 ac F 98.00 -� � ,� ;..,...... ,,,,.,... ,.,,,,. ..,.,. ..... . .... ... ... ........ ... . ,,,,..,,, ,,,.,,,.,...,. .,,,, .. ,,., ,,...., ., ,,,,,, '3 . . ...._ ,..,..,.. ,,., . .. .. .,...-. ,.,: .....:: . �. :.:..... ...,;,, j , € Impervious surfaces(pavements,roofs,etc) E 1736 ac ; 98.00 ?: ..... �........ �. _.... _ _m..,. .. ... _.... _ ;. �.._..., .. :...,_ _. .,.;; Impervious surfaces(pavements roofs,etc) = 7.85 ac � 98.00 ' r ..... . ........ �._._�,_ ___ -___�_,... ..,. . ,,.,,,. _.. .___. �_,, DC Composited CN(AMC 2) � 98.00 i Directly Connected TC Calc i .....:. .; x.tt..�:� _.:__ ,;,,;;;; �_..:, :: ;., .. __, .. Type Description Length ;Slope . Coeff . Misc � TT ; .:.: .:,.,,:p _.�� _._.::..w __.�m ._...: ... .,.;:.:. __..._. .:;;,:, __...., m.:..�3 Sheet Short rairie ass and lawns.: 0.15 250.00 ft 1.60% ,0.1500 2.00 m ;2820 min ; ; , :: m::� �:::�.�.. ._��..r: __ . .:. :..:_ :::�: ...«: . :�.._ ..:... �.�.� _� Shallow Short grass,pasture and lawns(n=0.030) :280.00 ft 4.30% 0.0300 = 2.10 min ' E..:� . ....::: . :,:. .:,.:.:.. __..�:� .._..._tt. . .: °.: .�::.� ��.�� .. ,..._. ..... ,. Channel(interm) Concrete pipe(n OAl2) 1350.00 ft �1.40% ,0.0120 ? 4.48 min _.. . ......._....� .. ..... .. .... �,.,,._ ...,... _..�.__ __.... . ...._.�.. ...._.._.. .__ _........ ... ._....� . Directly Connected TC 34.79min : 14 ORDINANCE NO. 5611 2 Event Summary ', _.W:: �� _�� ,�.,� �,._ ...:: _ _, _. � ��. �.w; _�, _� ��...:< : Q( ) ( )? yd Vol(acft) Area(ac)�Method�Raintype[ Event :Peak cfs Peak T hrs H _,_w.�; .; ,�,.,_. � _ _ ,�_._..._ _.....::w ,_.. :::. _, ��, , ... _., � 2 year � 31630 8.00 � L2966 i 9.9100 j SBUH-�TYPElA' ��, _ � F � � � _..__ . ..�:.:.. ;:; ::.: .:..:. . ::.:.... ��: w:� . . . ::.:. ? 10 year � 5.0572 8.00 ; 2.0748 ; 9.9100 ; SBUH #TYPElA'��= �� w_ ,,::. ,.. ;:.: ....::: �..::.:: w::.: ::�_ �: .. 25year ; 6.0178 8.00 24707 9.9100 ; SBUH ;TYPElA'�; ' _.�. � .... ._. . _�..., �..,�,.. .,..___ . , ..:�.... 100 year= 6.9847 8.00 � 2 8694 99100 ( SBUH ;TYPElA€ � Record Id:2 .::,�. _ _.. ...... .. ... .._ _.::� ..�...:::; .....;:.� �,..._.:,V ::.:: ...,.:: :�:_ _.....::: � � ..__. w �r_m �.__. ;Design Method ( SBUH Rainfall type TYPElA :' _._..:.: .. .,..:.:: . ....:: .._._:�� ...� �µ:. _.:::� ..._: ...,:.: _ : ::..::. �.:. __...::::. ......_ Hyd Intv ( 10.00 min Peaking Factor ; 484.00 ': �.v_... ._ ....... ... . .. ..... .._.. ..._._..__ . _..... ;__ ...... .,,.....� .._._._ __ .,x ;Abstraction Coeff ` 0.20 = �:. �...:......... . ..,.:::M . �,;;;: ...: ___�_ .:......... _. .:. .,. _..�..µ: _.,.�:� :. , Pervious Area(AMC 2) ( 1.67 ac DCIA i 8.24 ac ' _.�::.:: .:::.:. ...... . :. .:: �,,,m;. �� _._,rc:.. ....�_: ._...::: _.__�� _.::::; Pervious CN � 80.00 DC CN 98.00 _.::.::. ,:. :; m:.m _.�m.� � �: �m�.: _....v., Pervious TC ` 17.32 min :DC TC 17.32 min �._e , ,�w _s.� ....� e_ �_,...,__�,.� � ._�_ _�,� ..... _��_,,.., m,.�._ �� _._... Pervious CN Calc � � ; __ _. __ __ _ :, �__, _. __._... __�_. . ...� _..... .. _... ___ _.�_ _�_�. � _._..._____.____�.,,._�.__..___ _ __� � Description ; SubArea ; Sub cn : ...�_ .__...... . � . ... ...... �.. ��.. ..�.�.,.� _._,....� __.... � . ... :r: _..,�w.__.,._ . :. ...___�� ......_ : Open spaces,lawns,parks(>75%grass) 1.67 ac 80.00 ......_ .. �.. .� �_.�.. �. __._ ...__m_. .__..._.__ ,,,,,,,,,, ,,,��.._�_ _.P.. _...._� ��.w.�. Pervious Composited CN(AMC 2) 80.00 �, � ._.,. _,,.,,. __....,� �._�� _.�� ,� �.� ,_�.�� . , ,�.. ,_._.._ �_��_�.�� ...__ --__-__- � Pervious TC Calc :�, ....... . �..::,.. .�... .. ._u.:; . ._._:�w ..,.��,� , :: .� .._�.�::. ._.. ..:_ �.�::: .... , _ .... .w , ` Type Description ` Length Slope = Coeff � Misc TT ; ° � �_ � 3 :::;::, ,,,,,,,,;;;; ,,,�,� �:.:. ::..�,,; , ., .�;,:.,:;:. ,.,�:::;::... ...::::..::,.. .,. ,�.,,;:�'..:: :'::.;... .,;, .,.,...,.;�;.�:, k ....,...:::, ..,,,,.,;...::;;. ...,,,:,.:�.,,: . ;Sheet Short praine grass and lawns.:0.15 130.00 ft 5.00% '.0.1500 E2.00 in 10.60 min w.... �... ... . .._.... ��.. ..... _.__ __. ___.�.. _,�; _.,,. _._ ,. .� ... ..��.___�� .__.�� .. .._. Shallow Paved i1100.00 ft 1.80% 0.0100 ;6.72 min ��. .,_ .� . ......,. . . __.�.:_ _.::::: _.._...: _,.,,_:� �.,.,.. ..: .. ._:� _._�m:_w: .,_.,,. � .�.:::.. ..�_.... Pervious TC 1732 min . �__. _.. .�,... . ..�...... ., u . .«_..._ _.�.Directl Conn,,, .._._�._�. ��,., �. .. ..�._� _.......�.v,_,. . .. �..,,., ._..,��._ . � y ected CN Calc ' �_... ......._ ... . �..._ �. _..._.� P. .____._ .,w,,, �....__� ....... �_ �_._ _...__ .._ ...�.. __ �__.._.._�.... . � Descri tion € SubArea Sub cn ! . , _.... __.,_.�__ _.._.. ��.., ... ...... .....,.. .______ _..... ,. ..:.:. .. .,...._ ..��. Impervious surfaces(pavements,roofs,etc) 5.50 ac 98.00 ......;: ......:.: _...:::� ..:.::: .....v .. '- � _...._ ..: �:. ..,,_.:� _.....v� ._..._- .. ;, _ _.....;; Impervious surfaces(pavements,roofs,etc) ; 2.74 ac 98.00 _;.:: .�,..... ...,.::. .::. ..;:.: .... ....�... _,.._�.: ._.:_ � _._. : ... ��._::: �. '� DC Composited CN(AMC 2) � 98.00 - : _ : _ : : ;_ �.._:_ :.... ..._:. .. ...,v:: .,,. �.....:.. __:H. __�_ _...:.:: .... ... :: ....;:. .. .. .::: , �� Directly Connected TC Calc ` f:.:.:.. _.___... ._.:..:. .....:. . ....... ..... .:: ,:.:: .;;:. ......::;: w..:m;. ,;:. ,.. .._:. _...__�.: ..... _.....�.. Type f Description ; Length Slope Coeff E Misc TT � ; __,,,,, ,...,.,�. ...,. _�...._... _.._._._ .. _ ..... ,.,. ._... _,�.. .... ._. �.... .... �._.. :Sheet Short prairie grass and lawns.: 0.15 ;130.00 ft 5.00% 0.1500 ;2.00 in 10.60 min m _..._.. _......... �..... ._,._..... ...._,_,.. _.., ..._.... ,_�.... ,., ,, ..... _._.. ... .__. ; Shallow Paved ;1100.00 ft ' 1.80% =0.0100 6.72 min .. �....... ...,... ......... �.....x�. .. .._. .:_ . .:..,.. ..._... �_.,._.._ K..... . _..,... Directly Connected TC 1732min µ i _; ; 15 ORDINANCE NO. 5611 3 Event Summary �.:�::: ��.,,...: �:.:.:: ::.::n _�::..� .,_,;;,� �......�. . . ....... �.... Event �Peak Q(cfs).Peak T(hrs) Hyd Vol(acft)€Area(ac) Method=Raintype, . .:�M._ _:�. ...:.._.. �:::.:.. v..:w:_ ,.. . .. .,.. ,......, , 2 year �� 2.2713 � 8.17 1.5895 2L7200 ; SBUH =jTYPE1A��; ..... �._.. _..._..... _..._. �_.._ _...,�_ �...,.._.� _ _..... .. 10 year "; 4.9741 = 8.17 3.0386 21.7200 : SBUH TYPEIA„ _...:. : .:� _.:.. �...w�::_ _,.�:.;; _,,..�� ...:� .:. .. ...�.. ..�.., 25year '�� 6.4650 8.17 ; 3.8171 21.7200 ; SBUH �,TYPElA�-; ..:::,.. .x_», w �::.:�_ �... .. .::::: . ..:.: �,:: ....� �- }100 year i 8.0129 8.17 ? �.6183 = 21.7200 ; SBUH =�TYPElA( __.��.., .�___�:.; .. ..,_. � �_.. _rw�__....�_�� .._�__;Mw __...... �::::. ._::.. _. . ...�_.:::..., Record Id.3 _..._. ____. ........_.. ._.....�.._ ,,�._.._,_ ._._. _............ ...� _ . . .,... �_....... ...__... _..._.___ ___,,.r_ Design Method SBUH ;Rainfall type TYPElA _ _..,.... ..�...... __......, , . _ ...,w __..... �._....__, _....... _....... _.�_..__ Hyd Intv 10.00 min Fealang Factor ��; 484.00 '�_ _,...._ _._...... ..__...._ .. _..,_.__ �.,..�.,, _ ��..... _.... ._. ..�.. ._.��_._V__�._._.._ .... _�,�__�.. 3 , ; , �Abstraction Coeff ; 0 20 � £..�::: .,....�. ...�: �;.� _.._._._� _:: _ .....;: „ ,. ..;; ,..;.. .: �:. .._,.�� ;: ._..�. __..... _. ;Pervious Area(AMC 2) � 18.82 ac DCIA 2.90 ac ; ...:_. ..�.. .._ ___-..... _....._. _ . ._... .. ,..,,... .. ,_... _. ._ ____.... :Pervious CN 83.92 DC CN �98.00 ; Perv�ous TC 43 73 min DC TC 43 73�un � . ; .. ;. „; �mm - ,: :� .�_.�_.,::� ,:.: _�� .___,,,__.�. � �.___�--____� ___� __.:: _::. _��.�_�, �.�_ ..��.�..� � ___��,; _ _ Pervious CN Calc ,i r__� ,_��__��.� �..�. ��w� �� , ��.,�. _,,_ .��_ M.,,�_ _ _. � ..._ . , �� _ Description SubArea Sub cn __.::,,4 _.�::. . .. ..:_::. .:::��:; ......:� _..,,mr r_� ... .._... ... .....: ..,;:::: __.::. �.::::: �� .:::..: �.._...., ` Open spaces,lawns,parks(>75%grass) 6.51 ac 80.00 . _....... . .. ___�,.�,.__,w. ....,_,.�_ .�.._. ..__ �...... _.._ _ ._,,. __. .. .._�.,_�_,,.� _. ..��_.. ��. _. ; Open spaces,lawns,parks(>75%grass) 12.31 ac 86.00 _... __ _..._� ..__.. ______ P_,_ , � � _ � __ .__ .. . _ _ _�_ __.... . .. .. _ , Pervious Com osited CN AMC 2 � 83.92 ;; _. __<: ...�, ..... ...W . ..... __...____ _...._. .,r,_._.. ._._� .�. �. .. �.. _,.,w. __ .. ..__._.� .............. .. .. .. ......_._ � _,,..... Pervious TC Calc _..... .. ._ _. . .__ �__, r_.___ _, __ _ _._ ____ _._... _ _ : = Type Descnption e Length E Slope ; Coeff Misc � TT ' ..._. _...___ . ..__.... ......_ .....�._�... .........._ ...,..._. � ... ...,. _.._� , . .�..._.. _.r_�.. _. .�_::� .�� ,: Sheet Short prairie grass and lawns.: 0.15 200.00 ft 0.50% '0.1500 2.00 in 37.57 min ._:. _��_:.:..: . _. . :.� :�. _�.::w_�v. �„�.wµ:: ..___.:: ......,� . �;...: _�.��.� . .:.. W�� .... ;;.: ; Shallow Short grass,pasture and lawns(n 0.030) 600.00 ft #2.30% �0.0300 � 6.16 min =_ .. __...� - ___... __...___. ��._,,,.. __._... ..�... .._.. _... ,.... _ .......__...__�..�......_. .. .....___ �...,,... Pervious TC ; 43.73 min ` ... _....._ . , .... _._...... ...... . w ...,.. ....,_.. .,_, ..,.__ . .. ...,, . .... .._. __....... ... ,,.�, , _.. _. __ .,,. ..� Directly Connected CN Calc ...... .. ...... ..... ... ._. _ .:. _.. ._.... ._.. Description SubArea Sub cn . _H.. ..._ _._.... _........_ �_......... _: .._.... .. .. ... .. _..x_ _:. � � Impervious surfaces(pavements roofs,etc) ; 0.65 ac F 98.00 W:.::_. . .. ..�:.:: ....�_._.: _�.w:; �..::..�_, � . .....,::. _�: . ._�:::M:� .�..,... _��_�.: �_�:�;; Impervious surfaces(pavements,roofs,etc) � 1.91 ac 98.00 ., ... . . ... ... .. _...._.. ........._ . . ..._,_. ._: . .. ,. _. ... _ , Impervious surfaces(pavements,roofs,etc) : 034 ac 98.00 =; .._ _.... _. . _........ .__.....__. .... ..x. . ,. .,.. _..,: . DC Composited CN(AMC 2) ; 98.00 ,.; ,.. .:,:„ , ._.. , .�..... , .,,,_.,,,_ ,,,,..,,. . ... ,..._r,r ...,....,�.. . ... ........ . ... ......�.,,,...,,.,...,........,,... . , .�.,... .....,w..., .�� Directly Connected TC Calc �...;::. ... ..;;.., .:�.. :.__..::: w�.. .:::.. �._. ...:.::. ._ ��::. _....,... _ Type Description Length ; Slope ` Coeff ; Misc ' TT '' _.�.. _.,,�v ._. . _., r. .....,_. _ _._. _....... ,.,r... .... .. _._.. . ::. ,Sheet Short prairie grass and lawns.: 0.15 �200.00 ft ;;0.50% ,0.1500 ;2.00 in 37.57 min ;;: .,,_ ....___.,_..,,. _... _..... ..... . :... ....�...� . �.�::�� _ ._...:._. ... � ... _�.. ; Shallow 'Short grass,pasture and lawns (n 0.030) ;600.00 ft :2.30% 0 0300 6.16 min r , _n_:;.. . _ ....::. . . ...._.: . . .__:.:..... . .;: ....... _... __. _�._._... .. . ...,, ___...x_ ..w:. ,..�:::. � .::. .::...m , �'� Directly Connected TC 43 73min ��; ,. - � : ._.�:.� _.:......._..� 16 ORDINANCE NO. 5611 4 Event Summary ' __-w ,�: ......��. : _.:..::. .�:;..:_� ..,,.,;.� ..::::. .. . _.�, „��..�_� Event �Peak Q(cfs)Peak T(hrs) Hyd Vol(acft) Area(ac);Method;;Raintype,; _....;: . _....��.: _.._..::� ,.._;.. ....:. ... ::, ... �..::. �..:.._.�. � 2 year �� 3.8254 8.17 ; 2.2405 18.4200 ; SBUH ��;TYPElA; _ .....,E_ ..__.�... ... ,.. _ _,.,_.��, _�_.... ,._ ..� ___.._„_ , `; 10 year:� 6.3643 � 8.17 3 6609 18.4200 � SBUH �TYPElA�; � :� ....�...€.� .�...:»w .... :�._ ....:::: �....;� _..�;�:_ ....,�w.� €.� � _..�_.;, i 25 year ( 7.6693 8.17 4.3885 18.4200 SBUH ;TYPElA� ..,.�:::: . ... ::::: ,,,.,;,:'�.. ..:,;;;;:: ,,,,,.:::.: .. .�::� �;;;,;;;,.. f .,,,;�:;. ,,,E.,::.; ..� . ,,,._::,;; � . 100 year� 8.9888 � 8.17 51233 18.4200 � SBUH `TYPElA? � _.:�::: .....��; �....::�� _._..:.:4 .... ::::: . .�_ _.......�...�.___.w...,.. Record Id.4 �_�. . _....�,�_....., m .._..�- __.,_.w,� �.::. �.... .... �....... •� _._._...�� .:: ..... : ..__...,� _......... _ �,:�..__.�.�_W_ _ Design Method � SBUH `Rainfall type j TYPEIA ` ,: . . ,. .::: ....::::: _....:::ry ......: ... ... .: ..:�:� �::::. .:: ..... .,� _.::: , . � _..�:: �.,:::::� .._..... Hyd Intv 10.00 min Peaking Factor :E 484.00 :; ..::: ._..... �� _._..�:� _.�....:.�__ ._.�.:. �m:._.�..��-� w.. ....::: ._ ..�: �:;:r �._,_.m �._:::�� _.....�ry: ; = iAbstraction Coeff � 0.20 ; �...::. ... . .';,,, ,,,,,,,,,,,,,,�::;:: .,.,,,,,,.��M. ..,,,..-;......,, ... :..., f ...,,,,:::: .,,.,,:,:::,, ,.».,.:.:,,., , .....�. .. ,,..,;;,,..... ;;,,, ..,,,,,,,.,; ,,..,,,,,,,,... ,,,,,,,,.. �. Pervious Area(AMC 2) 5.54 ac DCIA � 12.88 ac ':, , �:: .. v.:x;. ��. _........� .......:. ......... r ...w� __....�� :.... . ::.:, :.::::., _._,� �:: ; ;Pervious CN 83.68 DC CN ;( 98.00 '; ..:,,.. .. �_. _ _......_ _.....�.. ....... ........... �._. _:__._ .�...... .......,., , .. _...,_ ._._ _...._ . . Pervious TC 40.31 min DC TC ( 50.70�un } , ..._...._ ., _._:�:;� �..�..w. ........ :. ...._ ... ..._.. _� �:�. � ,;:, - : : - ,i, �� .., _ . �� .__� �__�� __ __.�. ,� _.. �_�.._��_.�_... _� �_.__.�._ ., Pervious CN Calc _ _ __ _ ___ �._ , ��e�a�� _., „ . � �,��e �,�� __�_ �_._. , mm _� ��d�.� �,,� � e_� Description SubArea ? Sub cn .. _.; _. ._._:: ___...m_... ::.::. �.. :::::: ._.w�� . ..__ �:� „�m; __.r...� ...._M�:: _��:� _�.:;: Open spaces,lawns,parks(>75%grass) 3.40 ac � 86.00 _..� ,.,_ ,. .._.... ...... ..... _ ...., _��,_ ...___ .. ..�..__�. . . ,_ .. _. ._..._.,_ ......._,_ Open spaces,lawns,parks(>75%grass) 214 ac 80.00 _ _ �.��, ___ _.. �.. _... __��__ , P_,� _.. ._..� � __.. _.___ ___..��. __._�r ___ ___ _.._...� , Pervious Com osited CN AMC 2 83.68 _.,..w:µ._.�,�...: _...:,r . �...... .. .. ...... �, __r .�.. .._....... . �.......� ��w �. ._.__,_ ._r.,,.. r._,,,,._ .._ .._.�_. , Pervious TC Calc i -�,::� ;. ��:.�. _� _r_; ��___.__ � � __ - _. � �.,__ _r_.� �_. . ��...... ._._ . . _..__ , �__:�_. _�_.. � ; Slo e ! Coeff Misc ` TT ;. Type Description ; Length p � , w,. .__...:.. �.... . . _._..:: �._.. � �,:::µ._ .. :: ........ �� ..;: ._,_.��, �,..��, _,�,::� .�...�M: ; Sheet Short prairie grass and lawns.: 015 ?280.00 ft 1.40% �0.1500 2.00 in 32.57 min i .�:.r ,��... :.: ........ �. _ �:::. .. .....:w .�.,ww;.� ,._ _... ...� .�.; .:.� _.,. .,,�rm� ....:m�� w;;;� �� : �: [ Shallow Paved ;1300.00 ft 1.90% �0.0100 ; 7.73 inin ' .::w ,,. ....::� �_.......:._ ... : .:.. .... ..... .�:. _,_,��r��... .... ._. _....: .... _ _..:. _�.:�:�� .��..::: �.._�:;: w_�� i Pervious TC 40.31 min � � „r ,..��: .,......: ...:... ..... : .. ..... �_,�r�_:�._..._�:.. .. ._...<:.. . �.�. .rv:: ._...., � �..�_:�::� _.,.;:: �..,.,_�� ; Directly Connected CN Calc , ,;. . . ::.�:: __......: . ... .....: ,:: ....p ��:_: ...M..;�:.... .....::. ._..,. _��::. ..::�.:. ._:::: _ .�:.��_. Descri t�on � SubArea Sub cn i ,.._.._. ,;,,;;;,, ,,,,,,,,, ,;,;,„ ,...,,::� . . :..:. . ,.,.,,.,,,:,. ,,,;-,;..::;,; .....:�.;,:,, ..,.,:�:. . ,,:,;;;, ,,..,£: ;';.;,,.,,;,,,, ...�;;;,;:,... . ,,,,,,,. .;:; .,,,,,,,,,: j . Impervious surfaces(pavements,roofs,etc) ; 5.10 ac 98.00 ;; T. . ...�.:�_ __. ._ � _ .._.� m�.._, ..�..,,_._�� . ::� ..._.. . � :;� _._.: �...,�� ._�.�:�m� r....m: ...v..�� , Impervious surfaces(pavements,roofs,etc) 1 4.92 ac 98.00 i .:,.�, ...,�:.� ....�:.:._... .... _.:::: _....,:,:� _.._:�µ.: .... .... . .... . . . .... ... ....�. �._:.�:. ._...�:�� ,. . ; Impervious surfaces(pavements,roofs,etc) i 2.86 ac 98.00 � ... ...._... .,. __ ..... _._,._... _...__ _. . ;� ... .._.._ .... ..... .... . _ . � DC Composited CN(AMC 2) � 98.00 : �. .._..��._ _... ...____ _. ..__.� ��,.. . .,..., ,....__.�.. _._.. . ..... .� �.,�..,,. __.,..... ..._,...._....___.... __....____...... Directly Connected TC Calc ..r:k� .�.:.:._,._....... :;. �: ._...::;; __..::� .�:............. ..._.:::. _:.:... �:.m._... ,.;w... .....,:.. ; Type � Description ; Length Slope ; Coeff , Misc TT ;' �:. ::,.;r. ...._.:: __..:,:,: .._ ....., ,:: ..�_ .�.. ::... .:.:.�. :w.: _ ,Sheet �Cultivated Soil w/residue cover(s>20%)..:0.17 ;280.00 ft 1.40% 0.1700 2.00 m 36.01 min ,....::�. ; ... _ .....� _....,. ..�,.... ...... _ ..... x_� _ .,,...... _...... �. _. _ ;Shallow '=Short grass,pasture and lawns(n 0.030) ';1300.00 ft 1.90% 0.0300 = ;14.69 min ' €...:.�� _..:::..: . ... ..:..... �_ ..._�._:r ..�_.;��.. . ....:.:...... .. ..:. _._....: .:::._ ,.....:._ ,,.. . ..:.:.. ......,. .: Directly Connected TC 50.70min ;- 17 ORDINANCE NO. 5611 5 Event Summary ,:�:., � ....,:�.;-,::.,, .,... ....�.... ..:::;,,;;, , _:..�,w .�„ ` :�: ...�.._.,a:,r ,_.:;;. .; . ; Event �Peak Q(cfs) Peak T(hrs) Hyd Vol(acft)�Area(ac) Method Raintype„ _::::::, x.....,,: �:.�...H ,..._;. .._:.::: � ..._. . _:. .... _,:::::. ; 2 year ,` 2.8289 � 8.00 1 1387 9.2900 ; SBUH ',�TYPElA f ' _ � f _....�. :ww_ �..:. ..R _��.. _�_ __ �.w a. ..:f ._,:� �10 year ; 4 6317 8 00 � 1 8519 � 9 2900 SBLTH (TYPElA��,; �:..::: €:: ;.W.�.�� _�: r_w:_ _�..;.:. �.�:. .w:.::_ . ___... _,..:..::: ..,� 25 year ; 5.5558 ; 8.00 2.2174 9.2900 �; SBUH ��,,TYPElA��,! �� _.�::: ,. � _ ,.:.::. ,�.:.:�� _.... _ , �100 year� 6.4899 8.00 � 2.5865 � 9.2900 � SBUH ',TYPElA�; .._�::. :W_._......,� �: ___�_..:: ��......_ :.. ..H.� ��:,r:.:� u.u. .�._:;;:�_ :....:_h:._:_, Record Id:5 �....._ .._.._ �..._..._ ...._ .._.� _.,_.._. _ ...__ _....__. .____..:w _�� _._..::w ..:.; _.�..�.. �_..... _.__:�: Y__...w:.: ; ,Design Method SBUH Rainfall type ( TYPElA ` ��_.�,: x� �: .,,_�. ..:;: ....._;: _... :: �:: ..:. , ,. :...: _...._�: k ��.:::: .._:::::� ... 3Hyd Intv 10.00 min }Pealang Factor � 484.00 ° _.�.... _.. .,..�__., _.�_...__ ....,�_4 � ....,,_. _._ ___. �_,_...__ ___._ ___... , _...._.... __�.,._ .. .,,__.... ; £_.�w: .: ._...:::µ. �.: _....::. 'Abstraction Coeff € 0 20 ;:. ....tt.:: �.::.::� .._..:: . ., .r_ ....�:. , �Pervious Area(AMC 2) 2.45 ac DCIA � 6.84 ac € _....___ . _ ..,. ..._ __... .., _. .. .:: _:::.:. ,.. _..._.,:. .. ...::::: �:::::: : 'Pervious CN 81.44 DC CN 98.00 ....... _... _...._.._ . . .....:. w..._..... _: H.._._ _..ry m� .___..w� .. _.. ...,. _...._.::�. (, _�: . ; Pervious TC 15.25 min DC TC ` 15.25 rrun ; �-_�:,. ..;; ,�:; _. .... ;:; ..:..: �...;m� �. �.._„m �,,._� _. _.._� __.__� _,__..,,_..,__,� .._�.�_. ______� __::_ � �� Pervious CN Ca��.._.__ _____ �__ �...___ ....__...�_ .._�,,� ..___....e��. E lc __ _ _ _ € �� __�, � �._.,_�, _..__� _. ,,.,,,,_� ��, �__��_ _.,,,. � �_.,.�.e ,, _w� � ..�, £( Description SubArea � Sub cn ; �€_... ....... : .....�� _.....�:. r., ._w:: r:w� ...�,,..: _�.;;;; _:� ...w�m � �...,_:. _,,,,w�� ; � Open spaces,lawns,parks(>75%grass) 0.59 ac 86.00 _::::; _� ,. ,.:. .... _.�:: _ ::: �. �__:::.� ._.:�_ .._ ...,.::;: �..,... u ...��;:m ::...__��.: __��::w ...�� _:: _._,..�; £: Open spaces,lawns,parks(>75%grass) 1.86 ac 80.00 �W� __ _._ __� , r__w�__.. � _.W .__ �� ` _.�.,_. ...�_� _,�� __,_.. ::. .�. ��_ , _ �.:_ __ � ..�., .: , Pervious Composited CN(AMC 2) � 81.44 r�� um�: e _._�..� � . .,;� �,.�:m� e...� _ .. .�_ . _,. ...... ...__�.. ��,,,,.,_ __ .__.� ,... ._.,,.... __._ �,.,.,,_ �.. ..�._ .__..�. _. _._�._,_ ...,... _..�__,��_ , Pervious TC Calc � _...._�, ��W. .. _...�:: ... �:�:�.... ��W W _.�-:�..:. W:�_Ww __.:��.:� �_...�� -�_�: ��.��;. �,��.�_ � � _:.: : � Type ' Description Length � Slope ( Coeff , Misc TT �...... �� _:�:� .....w: _..::;:� _._::. �:. ..� ._�.:�� .::_� ;;�_., ... ::. .w�� ...�r� �,_:.: __��_w: _; Sheet Short prairie grass and lawns.:0.15 200.00 ft 5.50% 0.1500 ,2.00 m �14.40 min : � :�. ._.___w., ...:::. _.::� ��_.:::� � ___;;:::. �:.:.: �M �. ::.._ ____.�:M �._:� ..::_:u ...v.., ; _ Shallow €Short grass,pasture and lawns(n 0.030) ,250.00 ft ;20.80% 0.0300 `0.85 min ,: ,,.::. .. ..:�.i.. .:w� ......._. .....�_m� .._�.....: .....:: _,,..:.:. :.. ._..._::�...__ �... __�.::, W�::. ::::.. _..,::. : �( Pervious TC 15.25 min ._- ?.:..�,� . .. ..:�:, �..�W_ w;..: ...;:;:� _..._�:. �.., � ,.._.. �.___._ „��,,,� , _ ..._ _,�,.� .....___. ..._�_,. ,.,�.. _,.,,..,_ ,,,,_� .. __.._,.� ......:�_. �_ ._. __.,,,_. ; _ __ Directly Connected CN Calc , _..,..� _.,.. ,.. ..... K: ..,.�.... .. .. .:... ........ . .......: ... , : ; Description � SubArea Sub cn ; .::.::: „ .,..:; �.�:. ... _. ::: _ ....,.... ,:. . _:;.,. �::.:. ��: .. ::::.: ...: :. i` Impervious surfaces(pavements,roofs,etc) ` 2.37 ac , 98.00 __.., ..�. ... .. ........ _�„�, . �_.... �.,_� . ....._W _.�_��w ....�..� ___...�w _._w.:� � ......;_ ,._�. ,. �._..r..� Impervious surfaces(pavements,roofs,etc) y 0.92 ac � 98.00 ? E.....:: . . ..:::.:: _M.. _..::-: .. .....:: ._,..:: ,. :: .::::__. _., .;:;: _..:::; .;:: ........ _.. ;::: _..::.:: ; ,( Impervious surfaces(pavements,roofs,etc) ; 3.55 ac 98.00 : i� ..... ........... .. ....... ....,,,,,,,,..„ . .. ,,.. ... ... ,,,,,,,.... ,,,.,_,,.. ..,,,..,.., . ,.......... .,. ,,,...„ . ... .:.. ,.....,,,,. ............ ....... : .. .. �_ e ..:... .�,,, --.. , „ DC Composited CN(AMC 2) ` 98.00 : .:.,. _.� :.: _...:�:. _...,._�V�. ._: . ..��_:. .. . :.:._ �..�. ..._._.�_ �w_.. �,_�... ...._:: ._...�.:,� ...___��:. _..,,;, Directly Connected TC Calc ` ....:::: _�. _.:.:.:_ ..., .. . .. _... ....:::�: ...,._. .::: ....__.;rc: ...:.:.: r ,.:��:.:. ( Type Description� Length � Slope Coeff Misc , TT � � ..:..... _....�n ., . .,:�:: ��_... :_ :.... ....._.:, .:: .... w . :..::::, µ:..::. __�.;.. ::.. ;: ESheet : Short prairie grass and lawns.: 0.15 `200.00 ft ;5.50% `0.1500 ,2 00 in �14.40 min �', ....,.,. ...... . _..... _........ . . .,.,.. ..,_..., �.:. .,, �:___ .:� . �:.,_.:_ .,�.::;:. �:Shallow 'i Short grass,pasture and lawns(n 0.030) 250.00 ft �;20.80% 0 0300 - 0.85 min �.._.. _....,m_.... ..._ .... m. ___.,.. .. _ ___._._. . _�..__... ........ . _...:.:. __..:.:_ r:;.�_� ; , Directly Connected TC ; 1525min ,; ;� 18 ORDINANCE N0. 5611 6 Event Stunmary ' ,.�..� _ ........:; :. . _...�_m _�::;µ ...,.... :. � _.....:� µ:_ :.:::.. Event ;Peak Q(cfs),Peak T(hrs) Hyd Vol(acft)?Area(ac)iMethod_iRaintype'�„ � _;�. .. . _:.:�:. _..... ., ,:::.... _....,r::_ �.. _ ; 2 year ; 4.7747 8.17 � 2.7704 19.9000 �� SBUH =FTYPElA' ��_. _. . .. . ..,. .�,�_.�. _......,._ ..W.._w __ � � .�,...... .: r 10 year ; 7.5487 8.17 4 3851 19.9000 ' SBUH ;TYPElA j __� _....__,�: _:: .....:.. � � .., ; :25 year 8.9390 8.17 , 5.1998 19.9000 j SBUH ��TYPElA��,� � �.,.;;, �. ..., w..: .:..� _.__�.:� : ;..: �:w..� . .:. _,,.€.. 100 year; 10.3301 817 � 6.0172 19.9000 ��SBUH =€TYPElA; � ._.: ..._..�_ .........:. .�..._��, w. <w _..�.__��_�..�_.w.�._.._._�_� ::_.:.�:.;; Record Id.6 W...._..� �...._._..,. .... _,._.._r_ .._ . ......��__�..._.. .,,��_ .... .�_..__ __,._... ,.. _._.:: .. _ =Design Method SBUH °Rainfall type TYPElA .::... .... _,.....». .... ,....___. .. __...__ _...._ ... .. . . ......... _.,,,... ... ;Hyd Intv 10.00 min 'Peaking Factor 484.00 _�... �..�_ ._. ._____ _.�___,._...__. .. __.,._ �.. ,........,_ ��__. __. .. ; _..;,.:.. �....._ _ ` #Abstraction Coeff 020 ; .::: „.:: � . .,r...::: ;.: __...�:: ��.:.... .. .....:. . .. .:...:. _�:�:: ,:: �.: . ...:: .i Pervious Area(AMC 2) 2.23 ac DCIA ; 17.67 ac � ... .�._;. �:::. .:::: :.:._ .:. ,.� .....__::: ,:: ....�...: .....r._.�; Pervious CN 86.00 DC CN 98.00 � ..,:.,: . ...x ..... _._....__ _...._� .____ _. _.... _.__.._ .� .. Pervious TC 52.81 min ;DC TC 52.81 min �:� � _ � ; Perv�ous CN Calc = � „� . �� _ _ _ _�_ _ � _ _ r _� ;� � e_ �� , .,„ �_,.,�e A .�,.e��e W., �� ,��.� ,_�a„�� _�_�� '�i w.�� Description SubArea ; Sub cn ;�� .. ____.._._. ._.. ..__._ .�_.__.__.,,..�_ _. _. ._�..,._._,_w �:� ___...;� �. _.. �_.:�. _:. r Open spaces,lawns,parks(>75%grass) 2.23 ac 86.00 ' W. � � ..... _::�� _.�_,:�;w ,.,_ ,.,:: ....:.. _�_.::: ; r..:w� :� . ....�..� .�.__...::� _ �_..;:� , Pervious Composited CN(AMC 2) V 86.00 �. ...__�._ _�_ ._�_ _�m_, , � ,. __.,._� � . � ��_� w,_..,.� __._ .�_._.� , . � � Pervious TC Calc � �,�,€ �.:.: __.�.. .. _�..,�.. .w:� _._..�:. „_.._. ....::w�. �:. ��: p..�� __��..: � ...:... (.:w..w� ....:.:.. 3 Type Description , Length Slo e � Coeff , Misc , TT ,� ! __.._. �.:.. _.:� ��...�.... _ �� _�:_ �.. .: . . _ �.� � _; . .. �-::_{ �-�:�W _.:.�_ �. : ! Sheet Short prairie grass and lawns.: 0.15 �300.00 ft �0.70% '0.1500 �2.00 in �45.42 min i , � ......_. . ..__._._ .....,_.. _..,,,,r. ...... .... .... �_.��_. :..:.... _..:,�m u �;�:w �. ,.: ;Shallow Short grass,pasture and lawns(n=0.030) '"450.00 ft ;0.90% ?0 0300 ' 7.39 rrun ' ' _.�_. . .. .__,,.. . _.....�. �..,,.,_ „�.., � . .......... ......_ _,.___.�... ._ ...,.... _��. __...,, w. .:...: Pervious TC 52.81 min : _.._. . ., _.. . .. . .�. .. _ _ . ..,,..._ .._.�... �. � _ ___._ ____ _ .. ..._ _ _ __� �..._.... ____. _.� .. , Directl Connected CN Calc i� _ . .. :�� .. _._:..... _._.,:� _ ..�. ,.:: .,,,„ :: _.._..: _.__..�:. _�.,..„ . _....�:�..�,,.. �. .;;;.: _ Description ; SubArea € Sub cn ' .... . .. .. _.... ...,._.,, .. ...... ;:.. _.::..: .x. . ...:: ......_:w ,:... Impervious surfaces(pavements,roofs,etc) 13.90 ac 98.00 ' ..... _.._ ....... _:... ...... m.._.. _._.. ........ . . ..:....: , .__... ... Impervious surfaces(pavements,roofs,etc) 3.77 ac 98.00 =3 ::;.::: . :::_ _:.�::.r� _,�.;;, ._�.,,,., -.�..... ._.,��:�� ....�,,.� �: �._...:::. ..,�.,, . : . ..,._:;; :.�i 3 ; DC Composited CN(AMC 2) � 98.00 ;�; � . ........... _._..... ...._.._. .. .._....,_ _..... . ... ...,. ........ ....... .. _,...... 'i Directly Connected TC Calc ''' _. . .. .u;; _...:..__.._. �_.. __.::,.. ..:. ...� __... ��.... �..__... � �..... ._..,m:;,,._. � ..... Type Description Length : Slope ', Coeff Misc TT r::: , .. .. ;:.. . ...:.. .....::_ .:::� _.... .:. _.:�_ _...;., .,. _..:�:::. ..� .:.;:. : Sheet Short prairie grass and lawns.: 0.15 300.00 ft 0.70% ';0.1500 2.00 in 45.42 min .,.. , ......... ..,.:. ��..:.::: _.... :: :..: .::.�.. _. _... . .. ....::: .m:::._ . ::. €Shallow Short grass,pasture and lawns (n 0.030) �450.00 ft 0.90°10 0.0300 � 7.39 min ; ..:::.::_ :_m�.�. ,....._ .:: _�::. ....... ..: _...::.: :... ;i Directly Connected TC 52.81min -' 19 ORDINANCE NO. 5611 7 Event Summary _�. .._ ..____,�._ .�.__ _..�_... ._..... ..��, .. . ... ..... ; Event ;Peak Q(cfs);Peak T(hrs) Hyd Vol(acft) Area(ac);Method='Raintype,= : €:.. _:.:.._ _..:::. ;:. .;;:� _...::: µ; . . : 2 year � 4.2411 � 817 2.1148 � 16.9000 i SBUH =TYPElA,; .:.:. __..:::.: _._;,:._ �::�_ �:�_ .��.,... _:;,:. � . ....�. _ .� .,: � 10 year �( 6.9561 8.17 3.4397 16.9000 �SBUH ;TYPElA� � �..,:. ._�:::._ _.:,: �..::, � ::.�.r: __:;�.M ;:�. �_..._ .._., �25 year ; 8.3385 817 ` 4.1155 16.9000 ,; SBUH ,,TYPElA��E _.:::: �_.:�:_ _...�._. .::::. .. .. ..:.: �,: _..:::: _.._:::: ,::,�. ... ..�.. =100 year� 9.7299 8.17 4.7966 16.9000 SBUH ;TYPElA` _.:�:�.. _,..�;�w� M�.�.:� ,��.__ . _�.... ... :_.�:..:. _.�� .._..;:: _,�_....� _ . ._:.�_.:_�M Record Id.7 .._._. _��.._...w �, _._._. _. _... .. ....... ___ __,.....r. ,. ._. .. ..... .. _......�. _._,�,,._ W. _......�_ _. Design Method SBUH °Rainfall type TYPElA ' . �Hyd Intv ( 10 00 rrun Peaking Factor � 484 00 ; �...�. _�.... ....: .... ..... �� _.....; �.....� . _.._w:, r_,,,�_�; w. �,,.;; _......_....W.� �� ^rvT � Abstraction Coeff 0.20 � � , :; i d � ; ��z:. ., ,,,,,,,,,,,,, ,,,,,,......_.._, ,,,,,,,._„ .m,,,,,..,..., . .:..:. .,,,,,,,,. ,,,..,..., ,.....„,,,, .,,.._.:, . ..::,. .,,,,,,,,, ,,,,....,.:,, ,;: ,,,,,;;;,;,,,.. . :.;:, �. Pervious Area(AMC 2) 4.98 ac DCIA 11.92 ac _....._ _..x�.. _...._.. ..« .... . ...,.. __ _.._.. _.... _..., . ._ _..__..._ _�_._. r .... :. Pervious CN 86.00 ';DC CN 98.00 '; , _ __ __ _ _ _ __ _ s __ _ _ _ _ _ _ __ _ _ _ _ __ __....., . __.._...._....._..............._._,_ . .._.....,. . __ ..... , _.._;� � .. ... �.._... .._ Pervious TC _ � � m . j 32.36 min ;DC TC ; 32.36 min �� .�.;� : ..: � �. „ �� _._� �_� __��:. ��,� __._,�.___ � ��.� _.__ �,�_,.�.� �� _ �� Pervious CN Calc �� m�"" ' ,�em�� _ �.�,,� �� ,� .,,,.,.� �__,. ...._�. _� ._e.A �Nwe_ �.,.____ _�.��., �,.�_ �� _..�.� , Description ; SubArea � Sub cn ; E..::w ...____.w: �.,,..�� ,,. : ;: . ..::�_____�...:: .._,,.�w _.,.�:::: . .......::: ,._.�� _,w;.,_.. � __�. ., . .:�,. „ Open spaces lawns parks(>75%grass) 4 98 ac � 86 00 ��z � ,�_..:; : ._...�:: ��- �r._. Pervious Composi �_,.::; .. ._..�:� ... ...... _.W_ �,.,_,,.� ._. �W� _.......,_�� ` .._W._ . ,. ` ted CN(AMC 2) 86 00 ;� ; - , .._� , _ , �� w,��_ a� a=a�� . ..�� , ,.. .�� _�_:�� ..,,��,� � m�� eed_� �'�.� .._�� .� �de �_.:, �....� � �� Pervious TC Calc =? _...:. :, ..��.�.. ...... .,_.. _. ...:.: �,;,;. . :. .. P..:::�� .:. 4. r.,,.., �.� . ..�.. '' Type Description � Length i Slo e � Coeff Misc TT ,' � _ _ W� _W �:_: � ��.. ��.�.::. �.__�� _�w� ,.:.: �_ �-:.:.�. ��.._:. ._� �.�::: � ��Sheet �Short prairie grass and lawns.:0.15 250.00 ft ��:1.60% '0.1500 ,2.00 in ,28.20 min � _ 3.�: �...�.... _.,_:�� __...,_. ...�:.. _.,�..: __. �. �_.�; _�..:- ..: m�_: �,,.:�m :�:�._. _ :.:µ �:m.. , `:Shallow Short grass,pasture and lawns(n-0.030) 520.00 ft 3.80% '0.0300 415 min ? ri:M� �:� _�..._.�� ..�_�::. ,: ::. _�_: �..�.,:..__,_ . .... .......... .....�:: �.:.w� �...:. _��.� ..__,: 3 Pervious TC i 32.36 min =_ ..�Mw. ..w: ........: _..�.,,.:� ... ._;. ....,.::: ..� _�;,:� ,_.,.�.:.� . ..::...:� _.. :'; _.. _.�, „ _r _.__ _._� _.... . _.,�... _._._ .. ....___. . . __ __.__ __.. ___ .:::� ��, Directly Connected CN Calc � � � r.,.;;:. .........�:;; ,._,.. ,..:.:. ,,,,,,,.:_ ., . .�u ,..:::,,:.�., .. .�;:::: ,..�.,..::.: ........ ...:. . �: , n,.�.�f::.. ,,,,,;;:�; ,,...aw ,...:-�;_._ ,... W::;:.;;: ,, Description '� SubArea } Sub cn ' .... ..... ..... ;.. �_... ..�,.... . . . ; Impervious surfaces(pavements roofs etc) � 9 45 ac 98 00 _.�:.: .._....: ..... . . .... .:: ..:.::. �.;. � ...... :.. .::: ;.. ___...:: .. .: __..... : i Impervious surfaces(pavements,roofs,etc) 2.47 ac 98.00 '� _, ...::_ ��r,�..;.: v.,;;;;. ..�.� .::.. . ... . ..::� _.....: r: �„�,;;:�: �.,... ..�::, .:.. _ �..::�;� �.,��r..,... ;j DC Composited CN(AMC 2) 98.00 €.....::�- .....:.:. .:.::... ......:. ... . ::.. .:.;. :mw _�.�._.:. ,._„_._: ......... -�.:� ,..,..:.:�. ..::.... _..::.:.� . . -- ' . : '; Directly Connected TC Calc ,...:;. _.....�;.� .,..:�:; _...:::, _..�� ..�: _::. . :...�__._ �..�:., ��..:� ... _;�..: ._ :. �:.::.:. :.:..: ; ; Type Description r Length a Slope ', Coeff Misc TT � �:.�.: ...;, .�.:. :.m .....:.;. ,......::. �.��:_ ..:.: .,_::;.: r .. ,.:.:: , Sheet ' Short prairie grass and lawns.:0.15 �250.00 ft =1.60% '`0.1500 2.00 in 28.20 min : .:.....:� _::., .....,�� .. .....:;� ..,,...,.. __ _ ,..,.,,. .. ...... .._.., ry .._.. 'Shallow iShort grass,pasture and lawns(n=0.030) 'S20.00 ft 3.80% '0 0300 ' 4.15 min ....,._, _._.m.... ...._... ___.�.mm.. .�... .:.. .... . .. ........_._ _,........ ....,.. . .. ,. :. ..... _._..... �.._..: _ Directly Connected TC 32.36min 20 ORDINANCE NO. 5611 9 Event Summary __�: :. _ �.::::. �_�:r�m_ :y .: _.._.�:: , �Event (Peak Q(cfs) Peak T(hrs) Hyd Vol(acft)€Area(ac);Method,�Raintype� �_�... �. __.�_.... �....._ _�._::� � _._.__� _,..��. �, '�� 2 year ' 9.6179 8.17 4.3985 � �� 32.7200 �; SBUH '�� TYPElA�'; � ::.: i..:...., x...:�:. �::.,: £ .._:�..: ..: ._:::.:...:, 9 10 year ; 15.3232 817 = 7.0229 , 32.7200 � SBUH ��TYPElA_E .:.:��. _._,.::�� _.:::: _ , „_._ �� e:.::. _..:_ ,.: .w____.. .__� �-_. 25 year ; 182062 ; 8.00 ; 8.3518 E 32.7200 ; SBUH ��,;TYPElA��; � 100 year� 21.1026 8.00 9.6872 = 32. � �� f �_. �... �,__ .� _�._ _. �� , ; , � 7200 ; SBUH �TYPBIA� � ......... _..,.::. _._..� ......_. _.._..:.w __�...�m ��_ _._:... ; .,....:�:: .._._,.� _............_: Record Id.9 __._._ .. _... .�.�...,.... .. _._ _..._�.,_�.. _ . .�__._-__ _.::.��_._,::� ..._ w. ...�.:. __. _��.n ..��.:.:. . �. , :Design Method ; SBUH �Rainfall type „ TYPElA 3 .....:.: ......... .._:::. .. ,:. _...:.:_ .....,...:: _ .._::._ ..__,�._ _. . ,,., __...,�.: ;� _ _....,:. _ Hyd Intv 10 00 min Peal�ng Factor , 484 00 � r.::. �.: �..::::: ..___._..: _....:::: �.._.:: w; ......��. ...:.�: ..,. �. _.._ ;.::..::� Abstraction Coeff 020 ; _;.µ ..��:.:: _......:::. � ._:�.�:� _..�.:::: �.:. _._._.::: .:.�. �_�.��:_: , _...:.�: ::�;:, _ ....,::. ; _., ( ) �m 27.03 ac ,Pervious Area AMC 2 5.69 ac DCIA r. _.... ._ ._._. _.,:;; .,,.. _. ��.;:;: ...::::. __::� _..:::::: _..:::.x £ Pervious CN 85.98 DC CN ' 98.00 '� , ;: � _.... .,......�. ....... ...... ....:.. ., ......_ ... _. _.....__ ...::..:. _.__.:�. . ,,..::.: ::._::, ':: ...ji _.,::; , :Pervious TC 2517 min DC TC ; 25.17 min ,, ___� � ..�._.�we�._� _._�,._,m v�, �.�.� �_�_d�_ __�.� Pervious CN Calc �`� _.,_ �.ti,..,._, � m� �..___e � ��r _. _.�_ ,,,,. ._. _._,__ .�... ____ ._ .. .W. __: _�� , € Description ; SubArea Sub cn � ,a......_�,� . .,�b� pe.__p�� __ .� w�._..,_.� __ � � , , ee;w.,,, ._...�.« .e..,...e..m.... .,:'.;<. .m.e..e�..�.w. ..,..._.............m � ......�..,.......me..e,..e.�_ f . O en s aces,lawns,parks(>75%grass) 5.67 ac ; 86.00 ; �..� _._�,. .,_..__,... ,.,.....� __ __...... _�.�.,_. . . ..._... _,..,_... . .. .._: ___..;:.:� _.._:�; _...w� .;....:� ...__. � .. ; Open spaces,lawns,parks(>75%grass) _' 0.02 ac 80.00 . _.4_._... _......_.�,., .,,� . ____ ...._..__ , .._�� _.._,...._ _ .__._._w,,, .,.. ._ ..._,,, .. ....._. .,..... . . Pervious Composited CN(AMC 2) 85.98 ;'j :; �:µ _. :: ..,,,,.:_ . .....;; ;;, ____.,,� .., r _.....;� ,......,r .�w..;::_ ;::r.. , ...... �,. ' ,.._, _,,�_. ��.�__�„ e. ,_. �,_�._F e ��. ._.._�� , ,��....e ,,;r Pervious TC�CaIc�� ---� .m_ ; __ __ __ __ _ __ _ _ _ _ _ '. E..... �.._.._ __,.� _..... _. �..__... ._,__..��_,,� .._...... ...,.._... ._,,. �.._..._ ..._.._.. � Type � V Descript�on Length Slope Coeff ry Misc ry TT V = _.�.� �_.,�.:..._.._ _.�,_ �� _..,_ .,,....; ' � Sheet Short prairie grass and lawns.:0.15 200.00 ft 2.50% �0.1500 2.00 m ,19.74 irun ....�;: ...,._._.. ...._.�:;; ,,,_�._ ,< ._._.�.�.. � ;. �_,_,_� _.�.�.. .:.:.: � _.::;:: ,._..m �� ..__. .;< ,_ Shallow Short grass,pasture and lawns(n 0.030) 130.00 ft 2.30% ,0.0300 ;1.34 min � ... �....._. _......,_ .....,.. _. .,,.�_� .. _.. _..._.. .___::.. �..:::: , Shallow Paved 600.00 ft 2.70% 0.0100 ,2.99 min ,; v:. _.... ,:_ . .� , _.:.M� ,:;; �: ...::. _v _. ; Channel(interm) Concrete pipe(n 0.012) 400.00 ft ;2.00% =0 0120 , L 11 min � ,.. ... .._.._ ,. ....... ....... .... _........ ..: _.__.._ . __�. _ �: _:. _.r ..;. F Pervious TC ,25.17 min j�'. _.... _..._. ... _ ...,.. .,,�..._. _... �_�,,,.�...�.. ... ...,.,_.._..� � .. �.�,..... ...... ._ _..�.�_ ��..�._,,, . . ..u�:_., ,.. ..: , Directly Connected CN Calc � ... ...:;. .�:._ ., ..:.. _..�:�:_ ..,....,: ....:�..: .:..: ..__:.:. ___�::::_ ..::�: :....:.: . ..:::::: '; ; Description SubArea Sub cn ' ._,.. _.. _. ........ .. ........_�_,__.... �.. _..... ...._.._.__...� .._._. ... :.�: ,:. �_:. . ,.._::.: .�.� ,....., Impervious surfaces(pavements,roofs,etc) 1824 ac 98.00 _::.. ...:. ._...... ._: _... . ._. .......�: �:.. _:.. � _ . ; Impervious surfaces(pavements,roofs,etc) ; 8.79 ac ; 98.00 = ,, __.. _ ... _._..r __. ._. _....... _......._. ..... __ �.___ , ,.: �._._... ..... . ,.::::. ; f DC Composited CN(AMC 2) 98.00 __.._ ......... - �.� �......_,�.._...� � _...._.�.___ .-.. �.... ��_...... �..�_ ..__..�._. �.�._., �..._e „�,.. ._. __��._...- - Directly Connected TC Calc � �. .:.m..:: _..... :.:. ::w� _::: :�� . . ._...w.: ....:_:: �:��. :: _...�,.;, ; € Type Description Length ;Slope , Coeff � Misc ; TT = ,T.v_... _:.:�:: ;�� ...::. : : w.:::_ .;::k_ ..:� . �._.m:: :;: ..rc:: ; ;Sheet Short prairie grass and lawns.: 0.15 ;200.00 ft 2.50% �0.1500 '2.00 m ;19.74 min ' � _.......: ......... . � P.. ...._::m _..,_..( _,;::; > �,...._ �::. . :,;, _�:�rc: Shallow Short ass, asture and lawns n 0.030 130.00 ft 2.30% 0.0300 134 min = ; � �.,,x ___...m:. __..._ _ _. __..._.: .. _.. ...�_ ._�� _.... ., �,..:,� ; � _.._.,;.: �Shallow Paved ;600.00 ft 2.70% 0.0100 2.99 min ��:::. ..«.. :: _..._::. _. . �..::::: �......:::. .. ......: ; .: ....::�: :::.� .: .. _. � ;Channel(interm) Concrete pipe(n 0.012) ;400.00 ft 2.00% 0.0120 ' l.�l l min � _.� __.._._.. .. ...._.. ._,... _....: �...._._ _:._.. .. _,,.., _.... �..,,._. __..,.,.. .: __.. Direcfly Connected TC 25.17mui :: 21 ORDINANCE NO. 5611 10 Event Summary .. .. ...... _. . .....,.. _._. _.r__.... ._ __ �_, _�.,.. : Event Peak Q(cfs)Peak T(hrs).Hyd Vol(acft) Area(ac),iMethod;Raintype'-s ;.,.. �. :. �.... , _::,..::;_..._� � 2 year ( 14.2083 8.00 5.6225 � 52.7900 : SBUH TYPElA;[ � ..: ... �::.. __._�. _.�.w_ _. .., , _._;.�.......� 10 year j 24.4884 8.00 ; 9.4609 � 52.7900 � SBUH '�f TYPElA;; ....:��: u _..::. :..::: .._..: �::..ww� .�._:.�� ::.�.. _...._€:: ___._._�- �.�;;r.�_�.� �25 year 29.8801 8.00 ll.4593 52.7900 i SBUH =1TYPElA,; � ,:.:; .::. �..:: .._.::. _._�:.: _ _. ��r ; �100 year; 35.3817 , 8.00 13.4918 52.7900 ; SBUH ;;TYPElA� _....._, . _:�. .._. .::.: ___.:w .._._:.r.�..,..�:.� .._.�:;�. r: ._...:.:. .r___;;:w�,.,.;; Record Id: 10 .:.:__� _% ;::.:._ . .... ,. . . _.__.u: ._...�.�w _.,m�:: .....��......_....w�. ,�,:�� ._..._.w ��:: .��_____.� .._..::: �Design Method � SBUH Rainfall type TYPElA ', _.. .. ......,.. .._.._.._ ._.._. ........_ � �...__ .._....� ........ .... . ..:. ._. _,.,. ;Hyd Intv 10.00 min �Peal�ng Factor ; 484.00 N f ' ,..._.__ . _....._._ .. ._... ..... .... .....__.. ._...,_� ..�._..... .,...._.�. ,_.,,, _.�,,.� _.........�� .� . _. .. �_..�.� _.... , �Abstraction Coeff '€ 0.20 ; ' .::.::: ...::. (,...: ).:::: .......:� _�::: .::.� �. tt....._. _ .....,.� ,;, _... _.v;: : __......_ � ..__.;:: ;Pervious Area AMC 2 22.30 ac DCIA �; 30.49 ac '�� ::::. ......�rv� ��. _..;::: , ..�:.:�: .._.::::� ::� . ........ .w.tt:. .., .,..;, ;:: ...:;:::, w_...tt�.:._ . =Pervious CN 1 80.89 DC CN � ' 98.00 ! ..::_ _...... . ._ : ...w .�:::. _��::. �:: ��: �...mm _.�: .._.:.x: ..,,... . :.: _..,._�� ....__ Pervious TC ; 11.96 min DC TC 11.96 min � �_ �� _ � __ .__ _ _;: �� Pervious CN Calc.�...�. �m__ ___._ �, � _. ___�,_.__� __�_.__e_ ,� _�._� _� �_ �.��d..� �._�, �a_w.... �, � _� _ _,,v � �� _e. ..... ,_._,.�_ _.� . �,w� _� � Description SubArea Sub cn �. _. ...... . ___....� _.._. __.._.__- ____�__,_._ _., � ..._ �.. ,..�w.. �._..... _ .,, Open spaces,lawns,parks(>75%grass) 19.00 ac 80.00 ,w._. .._..... ... ... . .. w.w � .__n.._. ____..._. _..�...� ._�.....�_ �...�.._ .,,,.��., �.,. . .,. ..,.._ .,_�._.�. �....._. . ; Open spaces,lawns,parks(>75%grass) 3.30 ac 86.00 '' _...._. .. ..__ �_..... .__... _.. _ ...� _.. _.�. _. ___ __ __.._.. . _. r_._ . _ ._ , Pervious Composited CN(AMC 2) � 80.89 ' _...._ ........ _..._... _....__... _�.,_._._.�.��. ._____ ...�.�,, _�.,,.... �..,... ._�_.. �� ._ .__ ......�. Pervious TC Calc ' -. �� :. _�� _ ��W �� , _ w� � _,�__� ,� �� , __��:�:_.� � _,_ �� ` Type Description Length ; Slope '. Coeff , Misc TT ' .._. .:.._.... .. . :. n_ ._...�w._..__..�..:�:.�_�..:,.� � �::,;.: �..;�:: .,.., ..� W�_ � ...,.�. :_ ; Shallow 'Paved =250.00 ft �2.00% 0.0100 1.45 min ; ', :..::: _..__ .:._.. _��.: _ w�.� �_.��:. ___..:.� ....�� .. _,_��.�. �: _..._.. ., ....:: W....:_ .:_::�: ._. .._, K Channel(interm) ;Concrete pipe(n=0.012) ',1550.00 ft �5.30% '0.0120 '2.64 min ' _...... _... ._. �_ .W._._ .. .. __.. _....,,___ ,r__.��_� � _.,__vw�� ,� ��..�. _,,, ..,,; _. ...�_, . ; Channel(interm) ''Concrete pipe(n=0.012) ;550.00 ft =1.50% 0 0120 1 76 min .:.... ..... ........ ......... �...»» .___... ...__,.,. ._;,. ....�.. �.. _ . ....... _.... Channel(interm) Concrete pipe(n=0.012) ;1100.00 ft `0.50% �0 0120 6 ll min , _... _........ _... _.,_. . ... ...._�__._.�... __..,.,. _._......r ......._ _.... �� _.._ ._ �...,,,,, �...�... . : Pervious TC 11.96 min � .......... .. . _...... _..._... .__...._. ..._.__._ ...� ...,._ „�,_.._� .,,.... ..,.,,,,�.. _ .. . ...W_ _.......� ,....,.. . , Directly Connected CN Calc ° _ __ _ _ _ _ _ _ __ .. _«. _.._...._ . . ......._ _.._.. .�..._ _..__..._ __:._.._.. ._._ ...... .._.._..�.. _..,�..,, _ ._... .__.._ �, r_._��,. ... .. Description ; SubArea , Sub cn .: ..:. :� x.p ....;.. .: (p::. .._._:_ _.__.�; )........: ...:::�: �_..:.... .......... _:.�.: : Im ervious surfaces avements,roofs,etc � 139 ac 98.00 .;.:. . ... ,;::, . ..:: ......: :.:.:::. .......;: _.....r _.._.�::.� _ .. __.rc: __...;. .._::_:. ; Impervious surfaces(pavements,roofs,etc) £ 15.40 ac 98.00 .._,.. __...w... .......... _... ......,.,.. _........ w. .. ..w_.. _:. ... ,. . Impervious surfaces(pavements,roofs,etc) 13.70 ac 98.00 .... .... .. _ �.. P . ,,__ ( ) _. . _... „...... ...,... _��...��,. _�....�.. ........ . . .... ... _ x. , DC Com osited CN AMC 2 � 98.00 r _:,. .., . .. ..._,... ... ...... ._ ... ..... ..,.� ....,.. _....._ tt . ..:.. ...._ .._... Directly Connected TC Calc m.:::. .. ... ..�,.. _..:.:.. ,:..,,. . ....,, �.. �..,...: __��.::� ... _ £:.:....... ... Type Description Length ; Slope ' Coeff Misc TT m:.,.�.... ,... _.. ::.:. �_::._..... :..:.... . ... ....:: `. _� . ;... .�. ...:.:::.. . __. �._._.�:µ :.� ,Shallow ;Paved ;250.00 ft 2.00% €0.0100 1.45 min ......rc .._.. .... �..._,. . . , . .. . . ... ;,. _ ,.... _._._. _...., �..... . Channel(interm) ;Con�rete pipe(n=0.012) �1550.00 ft 5.30%��;0 0120 :2.64 min - . ...:::.'. .........:::: ,�. ,,,„ .�.:::. E...,. ,..,,,:..,,,. ..,..,...:�.;;;,:.. ... ...,'.:: .. ......,,;: _ .,,.M...�.. : ......... .. .... ...... .. ......�..., ........ .. .,....,.. . - Channel(interm) Concrete pipe(n=0.012) ;1100.00 ft ;0.50% ��0 0120 : 6.11 xnin : ��.. . . ::�:... _. . ,.... �:::. . �. ;,,f m�,,,, _._.,. Channel(interm) ;Concrete pipe(n=0.012) :550.00 ft �1.50% 0 0120 1.76 min ....... . ... ..... . . . ....:_ . .:_.... . .. ..__ ....._..... ... ....... . ,_� _.,,,,.� �..._... ..,. _...__._.. : Directly Connected TC 11.96min ;: [ , 22 ORDINANCE NO. 5611 11 Event Summary ' _ ...,... w.: ._.�_��.m �.M:w;. ....�_� .;: ;.. � ,:;� _......., �:.._.r- ; Event ;Peak Q(cfs);Peak T(hrs) Hyd Vol(acft)€Area(ac)€Method',Raintype:� ;..: .::.. _::.:.; _._.;:. �.:::;: � .:: _....... .:�::�:__._,, ....,,._ . . 2 year 3 3.9121 8.17 � 1.8�53 13.2000 ` SBUH �� TYPElA-= � , _.._:�: ;... ..�:. , :.:. ..;:;:., �;;�.� .....:: ,::. �._.._.: __�::�,� ; 10 year f 6.1050 ; 8.17 2.9502 13.2000 ; SBUH '-ETYPElA�; � ;.�::.: ,..:.W.: ,m�..�._�.��, _...._: ..._�. .�: ,.. ,;. .:.:._..�._.. �...;;;�..�� : 25 year 7 2008 = 8 17 3 4916 13.2000 ', SBUH ��TYPElA,� � ,:: . ._._.:.. ____...:: _ ... ,.... :: Ewx :.: .� 100 year, 8.2963 8.17 �.0345 132000 �; SBUH ��,,TYPElA_` � . � _.. ...:.... _.._..::;. �._.,;, _.:: . .......: _..:.,.:.. _._.w. _......_ _....::.::......._� �Record Id. 11 �..... . ._..�..��.____. _..�.._.,� ...,r... ... .,..._ ..... ._.. ........ �__.. _�....__ ____...,. ._...___. ;_ _�.�........ .,. 3 Design Method SBUH 'Rainfall type TYPElA .. .;:: .._.»M �� _.._.:�:: ::�..... .._' . ...... . ...:�..� ....::.:. ... . ...:€� ...,:..._ ...... . Hyd Intv 10.00 min �Peal�ng Factor E 484.00 �; ..._. �.r: µ__.u:::�.�_._��: ..,..�:::.. , .._;; � ..�._.: _.:� ___�..: _.�,_.;�; .,,:..:: .._.. �„�::::. ... .. :: ..: �Abstraction Coeff � 0.20 . _.... �...... .._ �.....,., v.... _.�. ... _....,_... __,.,. _....._ . �.,. � , Pervious Area(AMC 2) 0.79 ac ;DCIA 12.41 ac .»,...�. _...... .._......._ ...... .._..: . _,_.. ___ __._..... _....: 'Pervious CN 81.22 'DC CN 98.00 _ _......:: . ... ...: .:::; .::�::.: _.�:..:� �_..::: tt::�: _..:� _..�.wv: _... ..:.. € ..:... .._M .::. ..._w��.:. Pervious TC 31.21 min DC TC € 3L21 min �1 �,_ .,,, .::.,... ,.:. _...,;. �...;�: _....:� . ..... : ;:,. _...:�;. _.... .:....:.: �:::;__�_�„_ ��.._ �_��. __�r_..�,�.,___�.��_.�__.�_...� .� �.�.� �. ._.�,�;�. _. � Pervious CN Calc �'' �_�..__�_.� _� .� �,_�,.� � _ M.�� ,� .. ., �_ _�„__._ _�__ �.H_ v,�-m ��e� .__._ em,_,� ___ Description � SubArea ; Sub cn =' �. _. . . . ;; ., _�.__�.,� _._ .__.....�._. __... _ . ._�..w. ::. .....�w..�. �_.� ..;�;;; _ .,_.�::� .�,.._W�: , ��,.:.:�...�� .� _ Open spaces,lawns,parks(>75%grass) = 0.16 ac � 86.00 s' �::: W�:wW. ... . :.:� ...�_.w.; �.__,,�:� :. ..::;. _ _....:�_.:� �:�; ..,,.�w K�.::..:� ._...:::_ ... Open spaces,lawns,parks(>75%grass) 0.63 ac � 80.00 i � _ _ _ _ __ _ _ _... __.�___.�_�._ _ _� ._._� ..,..�� _ ___. _, �..__ _..�.�. __._. �_ .__, ____._.._. . .. Pervious Composited CN(AMC 2) 81.22 � _.. _....,,.�._... _.� _...__.� �� ..... . . . . ,,. . ,.. ... . �.....__ ..._,,...�. �_�__...� .�...._ _� . .. ` Pervious TC Calc ' _ . � �_:� � �. ___ ��:� _.._:�:, _�_�.,. W:. ��_::�. .. � � :__.__ . _ �: Type Description Length i Slope ; Coeff Misc ,£ TT ' �.. _r,..�_ , ._ .:.:::_ _:�.w.: ___,,,:w: _;:� :..: �..:. 'm:;.� ,:� �. �.. _ _:� - �..._.r m �� ;Sheet Short prairie grass and lawns.:0.15 ��200.00 ft ;1.00% ;0.1500 2.00 in 28.47 min ; _.. . .._..... . ........ ...�._.. _�,,,....... _... . _ _.._... _...... ,.. _.�.. _..::.�_ ._.�� , �Shallow `Paved 350.00 ft '110% '0.0100 ?2.74 min � '� ....:::.... .. �:: _.....,:w �.;,:........�. ; � . ..::.: .._._..: . _:::..�. ,.._...;;. _�..:::. _._... :. _._._:.::w .___�.. ..::.�. '1 Pervious TC 3 L21 min ; . ......._ ... ......._ ._.�_,�. __.....__�.., . ... .. ........ .. __.......�__.._�__ .__._..�,, _._�,�_.. �_._�... ,�_.,,.._. . .._...._ � Directly Connected CN Calc ' ..,. , x....... _........ _..._, ._...,... .. ........ ...__. _.;.. _._.. _.... _ ` Description � SubArea t Sub cn �; :::.: .....::::. ...x::... ._.. ..:: .: _.._...:. _.�,:�:: ......::... .: Impervious surfaces(pavements,roofs,etc) 1.31 ac ` 98.00 _ _.:� ._� ;,�r. __.��:.. �.... :_; :.: _....:: �.. ..,,, _.K�::�_ ..,,.�� V . . ` Impervious surfaces(pavements,roofs,etc) 5.58 ac 98.00 � _ _ _ _ ; :. .....:m:: ._:...w:. .._...�..�.. .:.:.;. .. ... ,; .:: �::::.� ....x.::, �:.. ;; Impervious surfaces(pavements,roofs,etc) 5.52 ac 98.00 %; _ _ __ __ ,: . ...._. . ......... ......... __._.. ...,.. _.._.,. . _:._: . ....:....: ........ _.�__ __ , DC Composited CN(AMC 2) 98.00 � u..: _,.._.: __..._�.. �...;;�, .,,..,. . �_��. . .._:_. .._._:�W�. ___�,,:w_ � , e,:.:..:�� ..:.:.,:� , �.__._ ; Directly Connected TC Calc ,...._, .. .::; .. .:»„. .::.,.: ,,,.,;;.:..: ,;;;;;,;,;, ,,,,,,,,,,,,, ..,,,,,,. ..;:..::: .... .. .....i .. :. . .,,:..:., .,. ,,,,,,,,, -:.,,,.._.,. .,.,..., .... .:::,. ;�.. Type E Description Length Slope Coeff Misc � TT ; v. . . .::: _. _.. ...... ....... ..__�.rc. _::.:. _:. _.._.... ...:;:. ,. _::... Sheet Short prairie grass and lawns.: 0 15 200.00 ft ;1.00% �0 1500 2.00 in 28.47 rrun = __.... .. ........ ... . .... .. . ..... . ........ . .._._ _.__._, . .. ,...... �_ m .... _ . Shallow ;Paved 350.00 ft 1.10% ;0.0100 2.74 min _..._ ___.........., ,, _�.,�,,.. � ....,__�... _. ..,. ....... _... �..,_� �_ ..._.._ .._. ; Directly Connected TC 31.21min ' _ ;; 23 ORDINANCE NO. 5611 12 Event Summary ' _...�r. ...�:. Q::� �. _e:.� ( ) Y � ::.. , __��:� .. - , _. _..�� . �� .._ _.-.� .._ Event �Peak cfs Peak T hrs H d Vol acft)�Area(ac);Method�;Raintype E _.�:;. �� .__....:� _...::� . ..:.: r....,. �._.�.. _�::.::.. .....: : 2 year `: 4.6749 8.17 � 2.4291 18.0300 �, SBUH :�TYPElA��; ��10 ear �� 7.4137 �._::�� 8.1.��.. .. .��:3.8629._ 18., �� ,��.:;�,��,,,_€ �.._� � y , 0300 E SBUH �;TYPElA��! � .__.. U_. .,_.� .._ �... _....�.�_ �...... _..�A� _��;�� r ...._...�� .:- ;25 year { 8.7961 ° 8.17 4.5897 � 18.0300 � SBUH ;TYPElA E .:�. :x. . ;: �._.::�, __...:x �. ..�� , ..:.... :..: 100 year 10 1844 8 17 5 3207 18 0300 � SBUH '.TYPElA� �.:.m:�.._�__.�:._��.. . .: .... .,�� ,,::::: .�:.. �._ �.'.�� . ..._._�� .�;.::...�.1, Record Id: 12 ' ..�_ _,��.._� .... _.... __.. ._..___. ..__..__.. ....._._ ...__.. �....._�. ..w:� ,� __�:m �... � ?Design Method SBUH ;Rainfall type TYPElA ,_.__::. .....,. .. ..__.��:. .,�. ..:�..,. ... :. .::. .._..:w ._..._..: ...,.::.. ..�� _ ..,_ _._ - ..,-. Hyd Intv i 10.00 min Peaking Factor i 484.00 ' ' E_ .,.....,,.,... ......,,... . ........:. . .............. ..,....:.,,., .,.,...,_ ,, .,.,,.,,.. ............,...,. ,.� ..._ <...,.....,....�,..,....,...„.,.., ,,,,..,....., i. ,,,,,.,...,.......,,.,,�...�,.:: -; �. � Abstraction CoefF ; 0.20 ': . ....., ..._..:�: __...�.x;; �..�: _:::: .. . ;.;. .._..._�. ....:v: :::. _..;: . ._ .r. Pervious Area(AMC 2) � 2.35 ac DCIA ; 15.68 ac ' ..__:� __......:... .. . ..: .:::�:: ...::,: .,.. .,. :: , ...._�� _...._.� ...:..:: ..:: �:: ;,� �.,.::�:. _ Pervious CN ` 80.08 DC CN E 98.00 ' _...._ ......_:. .. .:::. _... ._ ... _ �_... ;. ._ _._.. .......,, _..� _ Pervious TC 38.55 min :DC TC ` 38.55 min �_�, ..,�..�� _,..�, �.�. _.,,.,. �.e �.:�;;_.__�_�. _�.��: .;;::�.�....� � ._ �_��,..,,_,__� - � �__�. .._.�._� �..�:��____�;:. �_.. �� Pervious CN Calc _ _ P�,,,._,�� m � , w� ��;�� _ �� _ ��:��. ��e er .._.�� ._.��_� ,�,ee- .�_ � M ._�, �� ,,.�_� �.., ��m. a � �,.�:::: �_ '. Descri tion � = SubArea Sub cn _... .._....:.. .......... ...�:. .,...r_�. .,.:, w:.:. __,.�;:,. _.... _._W:: _; ,:.: _._.: :: �:::.�� ..._�. . ; Open spaces,lawns,parks(>75%grass) i 2.32 ac 80.00 ? ' ;:_ _ _ __ _ _ _ _ ; w_._ _ �.... . ......... ........_..._ ..�_..�_ __� � .._.._ _._. _..,,,,.,, . ...... ...__._.... .�__ �...� .....w._ _...,... ,.�..., �_ : '( Open spaces,lawns,parks(>75%grass) 0.03 ac 86.00 __ _ _ _ _ __ __ _ _ � < ____r.r__.��_.__.__......... .. .�____ __.___.._._.._.. . � _. .._______�_ _._ _. . _..._____,_�_. ... __ ___._,_ r_. .�_ . Pervious Composited CN(AMC 2) 80.08 � ' 3�_,;;'-__.��_._. _: _._�::. _._�� . : : : - : _�.. ..w_� � .._,.,.� . � _...�. ...�.__ __.. .�. _..�. �., ... .�_ . ..__.._._ �...... ; Pervious TC Calc ', _�_ _.,, _. _._.._ . __ �__ _.... . ..._ _ �� ... �. _._.__ __�_.� _..� _w�.:::., �, � Type Description i Length :� Slope , Coeff � Misc TT '' ._,_:� .,,..__.. __...�. ��,.,..,.� _.�: ..:� �,__�w _....� ..,._._., r�::. ; ,.�_�.. _._:.:� .:.: ' Sheet Short prairie grass and lawns.:0.15 300.00 ft !i2.00% 0.1500 �2.00 in =29.85 min ' , ._:.: ......�.� .:. . ._w_�:: �..;: � ...:.._. . ....�.. ....::: ... ...:... _; .�.__.. ._: .._.::, ,_,,,.. : .::....�� ........ .. ; �EShallow 'Short grass,pasture and lawns(n=0.030) 'S00.00 ft €0.80% i;0.0300 € 8.71 min , , , 3 .... .,.., .,.,::�.,,� ,,, ,,;;,, ,,,,;;;,,,,,.�:,;;. ,..,,......;:;;., . . ..,::.:. .,,,,:�:'�...,�.: .......;:_;;,.,. , ::;,,,.,:. ,,..... ..'.:;. ,,...,..::�', ,,,,.::.;,:�.:....., ,,,,,.:�:;:. ,,;...:.:: ,.,..�...� __:.. : � � Pervious TC , 38.55 min : � .._,...,.._�._ . . .....�._ ._. �,,..,.. � � . ._....._. _..,,,.�� ........ . . ....__._.��,.. . �............ ...... ._�._._...,..,.. ' Directly Connected CN Calc ;; ' __::: ....... : .. ...:::: ... ....� _. ..... .P. ��::.... _.... :: ..... ;: ..: ...... �. , f ��:. ....... . ; Descri t�on SubArea Sub cn �...� P...::..: �.:::::.:.. . .(p:.:: ...::�... �...::::._ j . ... . .. ;:. :.:;:... . ....,.;: _.m.;: .. ; Im ervious surfaces avements,roofs,etc 037 ac 98.00 ry Impervious surfaces(pavements roofs etc) £ 2 14 ac 98 00 �...._.� , , p. ._..w: .___.,.:; . .. (p_:-, __. ........:� j ....:::; ;: ........ ....... : Im ervious surfaces avements,roofs,etc 13.17 ac � 98.00 .,.._. _.._..... _ .... ..,: .. ..._ _.......� . . ..._... ..__.. ............ ..�.. . .. _..: .;. ....._ _::: : ......__ � DC Composited CN(AMC 2) ; 98.00 ; �--:--- �. ..._.. _ . �:- ;::._. v...�.�:�_�.�_._ :::. _..: ...,...�.�,_.... �: ..... __ __...: _...._�� :�::_,.,,�., � ; � Directly Connected TC Calc :. _.�....... .�.::. ..:.. _.._..::: _...,. , _._:��_ _ .,:.:,. ..__ : .... Type Description Length Slope �i` Coeff - Misc �TT _.� ... .... . ....._.. .:. ....._... ......��.. _...._._... ..... ...._,._ .., .::_ .:.::_ ... ..... -:v., Sheet Short prairie grass and lawns.: 0.15 ,300.00 ft ;2.00% '0.1500 2.00 in 29.85 min � �.,.�:� �.�.____. _ ..:..:. . ....:.:. .�w...�, u_:::�:.. .. .,_:� :_:..:. ��: . . .::: _mm:..;: ;Shallow :Short grass,pasture and lawns(n=0.030) �500.00 ft ;0.80% '0.0300 , ;8.71 min ' . ,...,.... __.... . . ..... .,,,.,,.. _�.._....y ... _..._�. _........ ... .. ..... .........__ .., _ _ r�:r Directl Connected TC � 38.SSmin 24 ORDINANCE NO. 5611 13 Event Summary ::� � �,..:, � Event EPeak Q(cfs) Peak T(hrs) Hyd Vol(acft) Area(ac),Method:;Raintype� ' _.. �.... _.. . _.... ...: �: , _....:. .;. , 2yeac � 6A184 � 8.00 ; 2.4544 ; 16.6000 ;! SBUH '�� TYPElA'�< � � �. : __.:W__. �-..::.;� .,____.� � _.:�;.� .,..., �. .,.��_.��_,.._ .. , 10 year 9.2869 8.00 3.8293 16.6000 �� SBUH '�TYPElA' '� _,�M �� .�w ._:::. _�_,._�� ,._ : _ � _ , �_: ..._._�.�� :w .( �� ;25 year_[ 10.9081 ; 8.00 4.5186 16.6000 �� SBUH (TYPElA��; �� ,,,;,;;,;;;;, , f::: ,-;.�;::,,, r,.;..:.::., ....;;:::. ,�.,:.,;:, ,.,�,:,;;,:, ,..:::.:. ��.:� ,......,.,,,,... ......:....: . � 100 year( 12.5236 ; 8.00 ; 5.2082 , 16.6000 .' SBUH �, TYPElA'�„ � _.�__. ..:., .. . m.::, __....w�, _.._�... __w__.. w;;:;:... :.:: ��..wW .__..�_��. _�.:.:......._ Record Id. 13 ,..,�. v._..:� _...w�w .:::: � ......:: . ...�.rv� � .,,.r..�w._,. � . : -__ __._�.� ........�_ . . .__.�� . ___... _.....� , ;Design Method � SBUH ;Rainfall type ; TYPElA ; x . � �::: ........ € ...:: .w rc...:�r� .., :.::-, ...�:�.� _. �..:.: w=, Hyd Intv 10.00 min Peaking Factor 484.00 ; ........ W..... ..._�__�� ._____.,_ .._�..._.. ......� �. ....... .r, _.�.,,,, .,.. .� ..� . �._. ._. __,�.r._ �... .:.. ; � zAbstraction Coeff j 0.20 � �:_:. .:::;:. �:�:. .��:::: _.w::. . . .. ::;: _::��: , ,. ..,..: .;:: _�� . ._ � �._� , Pervious Area(AMC 2) ; 0.00 ac ;DCIA � 16:60 ac ` �.,_,... .,,. .... _.. _...._.__. .,,.... . . _._._... . „ ........ ._. _ ,: ......�mm. _. ,....: : Pervious CN 0.00 ;DC CN 98.00 ' _..... . ...... . ....... _..._.,...x . .. .._.. _..._. ...... . ..... . �.....__ ___... ...._. ..:.:�:.: �._�.::. Pervioas TC � 18 84 min DC TC ;� 18.84 min � E a ___�__�.,...� __e.__�. . ....,..�,�_._�__.� _ __._,,,�,�,_�,�.. __��.......�._�,.__..,,_,__ �,._��__ __._.__ �, £� Pervious TC Calc ' ��:N�: , _�,�;� _ � Len th •�Slo_ Co. _ .��. „ ___�, T e �� mm�. ,., e,.�w� Descr�:� q � �_ _d ,.�, .�._._m ��_ � � �� n.._ � - � ____�� _� _ yp ` iption g pe eff ; Misc TT = ._:_.. ....... .. �._..__:� .;�_._�,. . � .._ . .,..:4u� ..�.. ._�. . .: ,.....�� .....�;: ..,.. . .. : __.�m .._.�:: w;:: ... .....:_ - Sheet �Short prairie grass and lawns.:0.15 �128.40 ft �3.12% 0 1500 Z.00 m 12.67 min ,; __. . .. ...... .._ r.,...._ _..... .. ._._.�..,_.�._..� ..�.... ,.w_... _�_,,,._ ;..... _........ � ... __.�.:.,._� W: :: EShallow Paved 165.80 ft 2 41% ,0.0100 ; 0.88 min j __._ ..�_. .. _.� ___ ____.. ... . ___�. .�.._... ...� __..� �._. _. _� _r� ___ ..�� Channel(interm) Concrete pipe(n=0.012) 847 00 ft 5.87% ,0.0120 1.37 min ` ; ,_:::.. __��m:. ......� . _. _.. . ? _..,,,..� u �.....,� �.w; �..- .,��_r �_..:�. � `Channel(interm) �Concrete pipe(n=0.012) �1770.00 ft '3.14% 0.0120 ; 392 min � ...._ ..... . ....... ��.:_,,.. ..__ . ..._ . ,..._.. _ _„_._..___��_.,.. _. .._ ___..,_.. .. ......... .__�� .... �..w�;_ .... ......; � Pervious TC ; 18.84 min ' -�� _��;� _,.�� ,,,,..�:; __�m�ti�.��Directl Connected C. � E.,�.... ..,�... ,e., . .....: _.............. .�.e.�.... .e . _.,_....: , . �:; .,e,.:.E'.............�e ,.,�,._.�.::.... .2 y N Calc `'' • t} �, .... ___�.�.. ��._.:.;; .�.�� :.: _....�w :. .�.�... . : __..::�. ..::w;� . ..�.._._.,,., _.w.�.:..�. :.:. � Description = SubArea i Sub cn ; � _��. ...., __.._�� .�.. .... ._._. .._�_,,..__,,.�� . _ _�.._�_....._ �.,.,_ �. ,..„_._. . _...:.w,. ,..�..;. Impervious surfaces(pavements,roofs,etc) 16.60 ac 98.00 ...... ._., ......... .......:. ..... ...k.... .... ..... ......... �_.. ,._ .... ._. __.... .:. � DC Composited CN(AMC 2) �98.00 _...... _. , .__...... .� _�.... „_..._. ... . .._ _.�.._.. _.....,. ..�,,,._ ._ __.._,._..� _�m_ _� ,...... , Directly Connected TC Calc ;i . � �.:� _ ....... :; .:.: ...... . �.:... _..,:::: ...:.:.:. .... _..:.::. . . 3 , Type Description Length Slope Coeff Misc TT ; �.._.. _. ,.,., �_. _._..., .._._.. ,� , ,„_� : _....: r�::. _...,. . _.. . _..w;; , . ,. :::.. €Sheet Short prairie grass and lawns..0.15 128.40 ft 3.12% 01500 ,2.00 m i12.67 min = _;;, , .:_ _._�tt. _.. ... .,. ...::m . .,:: �.....�. __.... � _.....:; ..�.µ .. ;_: __..�: ,_ ., �,:: ; `.Shallow Paved 165.80 ft �2.41% ,0 0100 � 0.88 min . ' .. ..: .......m .....::; .....:. ......_::: .......: .:.. _....,.:.: w...:. Channel(interm) �Concrete pipe(n=0.012) ;847.00 ft �µ� ; 'S.87% -0.0120 � � T 1.37 min �; .. r .. .. : ::� ..w�� ;....: _:.:.: .. : .�:.:.. _�..:.:: ...:: : ._,... _:: iChannel(interm) Concrete pipe(n=0.012) 1770.00 ft 3.14% 0.0120 � 3.92 min �� __... ....., ..__.,�.� �.._..... .. .. y,,...� __....._ ._,,,. .._....... .. ..... w....... _ .:,.:. i_ Directl Connected TC 18.84min _�_�,r>m�� _«- Licensed to:Ch2M Hill-Bellevue,WA 25