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Home My WebLink About03031 - Technical Information Report SURFACE WATER TECHNICAL INFORMATION REPORT for Renton Emporium SW Sunset Blvd Renton, Washington Section 18, Township 23n, Range 5E, W.M. ! A Q�Wr�'�� OF '� I e� ' � �' c "� Z .' � R , t �� o ,�. ' EXPIiiES 4/26,12003 I� I PREPARED BY: Johan Oye , P.E. 12202 Pacific Ave. S Tacoma, WA 98444 (253) 537 8128 PREPARED FOR: Keith and Annette Demps I 2308 N E 24"' Street Renton, WA 98056 (425? 226 6632 DATE: December 28, 2001 JOB N0: 2525 303 / f " TABLE OF CONTENTS CHAPTER PAGE I. Project Overview................................................................................. 3 II. Preliminary Conditions Summary ........................................................... 3 III. Off Site Analysis................................................................................. 3 IV. Retention/Detention Analysis and Design ...............................................4 V. Conveyance Systems Analysis and Design .............................................4 VI. Water Quality .....................................................................................4 VII. Special Reports and Studies .................................................................4 VIII. Erosion/Sedimentation Control ..............................................................4 IX. Maintenance and Operation Manual ....................................................... 5 Appendix 1 Retention Design Appendix 2 Soils Report, (partial copy) � � RENTON EMPORIUM, RENTON SURFACE WATER TECHNICAL INFORMATION REPORT I. PROJECT OVERVIEW Construct a 4500 sf commercial structure and associated parking and landscaping on a vacant parcel approximately 0.45 acres located in the City of Renton. r II. PRELIMINARY CONDITIONS SUMMARY The site is served by municipal utilities in Sunset Blvd, including storm drainage, sewer, water, gas, telephone, and power. Developed properties surround the site, and these developments include storm drainage systems. Therefore little offsite runoff enters the site. No soils report for the site is available. Runoff controls shall match existing 2, 10, and 100 year pre-existing runoff rates. Site Data: Location: 2800 NE 3rd Street, Renton Section 16, Township 23N, Range 5E, W.M. Rainfall: 2 year 2"/24 hrs 10 Year 2.9"/24 hrs 100 year 3.9"/24 hrs Soil: Existing pavement on lots 27, 28, and 29. Lot 3 is an undeveloped parcel covered with brush and small trees III. OFF SITE ANALYSIS Tributary Areas and Downstream Analysis The site receives minimal runoff from adjacent uphill residential properties; some of these developments have existing storm drainage systems with their own conveyance to existing drainage system in SW Langston Rd. Runoff from the site drains to an existing public catchbasin located in Sunset Blvd. frontage. This catchbasin is part of a conveyance system in Sunset flowing easterly towards Langston. At the foot of Langston, the conveyance crosses to the south side of Sunset, and enters a major conveyance system following Hardie Avenue to the south west and south. A site inspection and a review of the As-Constructed plan - RENTON EMPORIUM, RENTON SURFACE WATER TECHNICAL INFORMATION REPORT and profile sheets for the Hardie Avenue drainage show no obvious drainage problems. However, the drainage in Sunset Blvd between the Site and Langston appears to be inadequate. Our recommendation is to construct a new connection from the site to the Langston/Sunset interchange. This system will be located at the north edge of the ROW between the Chevron property and the sidewalk, and will connect to a basin with known capacity. IV. RETENTION/DETENTION ANALYSIS AND DESIGN Retention analysis has been performed using Waterworks version 5 software, and the precipitation parameters provided in the King County 1993 SWMM manual. Detention will be provide using an underground pipe vault with controlled release to the existing City owned storm system in Sunset Blvd as described above. V. CONVEYANCE SYSTEMS ANALYSIS AND DESIGN Conveyance system for this site consist of sheet flow in the parking areas into �' catch basins. The basins in turn convey the runoff to the detention structure. All runoff from the roofs are tightlined directly to the detention facility. VI. WATER QUALITY Water quality in the runoff siream is achieved using a wet vault. The vault is combined with the detention facility such that the active detention volume overlays the treatment volume. Sizing of the vault is in accordance with section 4.6.2 of the manual. VII. SPECIAL REPORTS AND STUDIES • The soils report is attached. Also a level 1 downstream analysis was prepared and is attached VIII. EROSION/SEDIMENTATION CONTROL DESIGN After parking lot grading and installation of the catch basins and storm drains, inlet protection shall be installed at each inlet in order to prevent sediments from clogging pipes or the storage pond. Silt fences and a construction entrance shall be installed to protect downstream properties and roadways from silting and debris resulting from the construction operations - RENTON EMPORIUM, RENTON SURFACE WATER TECHNICAL INFORMATION REPORT IX. MAINTENANCE AND OPERATION MANUAL Your drainage facilities consist of catch basins in the parking lot, underground pipes connecting those pipes, a wet vault with control structure, and a release structure consisting of pipes manholes and an energy dissipator. The purpose of this storm drainage structure is to collect the rain water that falls on the property and safely discharge it to the existing conveyance system in 228th Avenue. The most important function is the protection of property from damage caused by flooding during large rainstorms. This includes your property as well as the property of neighbors downstream. The pipes and catch basins have been sized and located to convey the storm water resulting from the design storm to the storage pond. The vault has been sized to temporarily hold the storm water and to release water at a controlled rate to the downstream conveyance system. The storage pond is important since as the site is developed, the rate and volume of water draining off the site increases significantly when compared to the release rate and volume of the site in its undeveloped condition. Thus, the designed system with controlled release helps reduce the danger of future flood damage. Another important function of the storm drainage system is the protection of the downstream waters from pollution. Oil drippings and other pollutants flow into the storm drainage system during rainstorms. The catch basins and wetvault are designed to settle pollution and dirt out of the storm water. Proper maintenance of these elements will maintain their efficiency, and prevent pipe blockage and the possibility of accidental flooding. Your storm drainage system have been designed according to current City of Renton and King County Standards, and maintenance of the facilities is important to insure that they are operation properly. The City of Renton may inspect the drainage facilities for compliance with the attached maintenance requirements. If you as the owner fail to maintain the facilities to acceptable standards, City may issue a written notice specifying corrective action. If this action is not taken in a timely manner, the City may enter the property to perform the required maintenance and bill you for the cost of the work. In the event a hazard to public safety exists, written notice may not be required. r �M E3 - ? T23N R5E W 1/2 � � ' . 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G3 • 19 T23N R5E W 1/2 � Q 20U 44� �� nY °� UTILITIES DIVISION ---- Renton �� =4800 � �� ' �; p�w �cxrnc�, s$RvicBs ,��;�, °`�'°" 18 T�.' 3N R5E W 1/2 � �N,TO 12/03/99 /, � , ' RENTON EMPORIUM, RENTON SURFACE WATER TECHNICAL INFORMATION REPORT Following is a guide to the maintenance requirements of your drainage facilities: Section Subject 1 Not Applicable 2 Not Applicable 3 Closed Detention Systems (Pipes/Tanks) 4 Control Structure/Flow Restrictor 5 Catch Basins 6 Not Applicable i 7 Energy Dissipators 8 Not Applicable 9 Not Applicable 10 Conveyance Systems (Pipes and Ditches) 1 1 Grounds 1 2 Access Roads/Easements < - KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAI. _ NO. 3 - CLOSED DETENTION SYSTEMS (PIPES/TANKS) - Maintenance CondiUons When Maintenanc� Results Expectad Component Defect Is Needed When Maintenance is Performed Storage Area Plu89ed Air Vents One-half of the cross section of a vent is Vents free of debris and sediment. blocked at any point wfth debris and sediment. Debris and Accumulated sediment depth exceeds All sediment and debris removed from Sediment 1096 oi the diameter of the storage area storage area. for 1/2 length of storage vault or any � point depth exceeds 15%of diameter. Example: 72-inch storage tank would require cleaning when sediment reaches depth of 7 inches for more than 1/2 length of tank. _ Joints Between Any crack allowing material to be All Joints between tank/pipe sections are Tank/Pipe Section transported into facility. sealed. Tank/Pipe Bent My part oi tank/pipe Is bent out of shape Tank/pipe repaired or replaced to design. Out of Shape more than 10%of its design shape. Manhole Cover not in Place Cover is missing or only partially in place. Manhole is closed. My open manhole requires maintenance. Locking Mechanism cannot be opened by one Mechanism opens with proper tools. Mechanism Not maintenance person with proper toois. Working Bolts into frame have less than 1/2 inch of thread (may not apply to seii-locking lids). Cover Difficult to One maintenance person cannot remove Cover can be removed and reinstalled by Remove Ild aRer applying 80 pounds of liR. Intent one maintenance person. is to keep cover from sealing off access to maintenance. Ladder Rungs King County Safety Office and/or Ladder meets design standards and Unsafe maintenance person judges that Iadder Is allows maintenance persons sate access. unsafe due to missing rungs, misalfgnment,rust,or cracks. Catch Basins See"Catch Basins" Standard No. 5 See"Catch Basins" Standard No.5 II A-3 I/� � ' .. KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL - NO. 4 - CONTROL STRUCTURE/FLOW RESTRICTOR Maintenance Conditlons When M�Intenance ResuRa Expected Compo�ent Dafect Is Needed When Malntenance is Performed General Trash and Debris Distance between debris build-up and NI trash and debris removed. (Includes bottom of orifice plate is less than 1-1/2 Sediment) teet. , ' Structural Damage Structure is not securely attached to Structure securely attached to wall and menhole wall and outlet pipe structure outlet pipe. should support at least 1,000 pounds of up or down pressure. Structure is not In upright position (allow Structure in correct position. up to 10%from plumb). Connectiona to outiet pipe are not Connections to outlet pipe are watertight; watertight and show signs of rust. structure repaired or replaced and works as designed. My holes—other than designed holes— Structure has no holes other than in the structure. designed holas. Cleanout Gate Damaged or Geanout gate is not watertight or is Gate is watertight and works as designed. Missing missing. Gate cannot be moved up and down by Gate moves up and down easily and is one maintenance person, watertight. Chain leading to gate is misaing or Chain is in place and works as designed. - damaged. Gate is rusted over 5096 of its surface Gate is repaired or replaced to meet area. design standards. Orifice Plate Damaged or Control device is not working properly Plate is in place and works as designed. Missing due to missing, out ot place,or bent orifice plate. Obstructions My trash,debris, sediment,or vegetation Plate is free of all obstructions and works blocking the plate. as designed. Overflow Pipe Obstructions Any trash or debris blocking {or having Pipe is free of all obstructions and works the potential oi blocking)the overflow as designed. pipe. Manhole See"Closed Detention Systems'Standard See"Closed Detention Systems" Standard No.3. No.3. Catch Basin See"Catch Basine' Standard No. 5. See'Catch Basins"Standard No. 5. - A-4 1/90 , KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL NO. 5 - CATCH BASINS. , ��_ Matntenancs Condltlons Wh�n Maint�►anc� Resuks Eupscted Component Dofect is Nesdsd 1Nhen Maintenancs Is Performed I General Trash 8�Debris Trash or debris of more than 1/2 cubic No Vash or debria located immediately in (Indudes toot which is located immediately in front front oi catch besin opening. Sediment) oi the catch basin opening or is blocking capacity ot basin by mora than 10%. Trash or debris (in the basin)that No trash or debris in the catch basin. exceeds 1/3 the depth irom the bottom of basin to invert of the lowest pipe into or out ot the basin. Trash or debrfs in any inlet or outlet pipe Iniet and outlet pipes free of trash or ! blocking more than t/3 of its height. debris. � Dead animals or vegetation that could No dead animais or vegetatlon present eenerate odors that would cause within the catch basln. complaints or dangerous gases (e.g., methane). Depoaita ot garbage exceedinp 1 cubic No condltion present whlch would attract foot in volume. o�support tha breeding of Insects or rodente. Structural Damage Corner of frame extends more than 3/4 Frame is even with curb. to Frame and/or inch past curb face into the street (f Top Slab epplicable). Top sleb has holes larger than 2 square Top slab is free of holes and cracks. � inches or cracks wider than 1/4 inch (ntent is to make sure all material is runnin8 into the basin). ! Frame not sitting flush on top slab,i.e., Frame is sitting flush on top slab. . -- separation of more than 3/4 inch of the frame from the top slab. Cracks in Basin Cracks wider than 1/2 inch and longer Basin replaced or repaired to design Walls/Bottom Man 3 feet,any evidence oi soil particles standards. entering catch basin through cradcs,or maintenance person judees that structure is unsound. Cracks wider than 1/2 inch and longer No cracks more than 1/4 Inch wide at the than 1 foot at the joint oi any inlet/outlet joint o}inlet/outlet pipe. pipe or any evidence of soil particles entering catch basin through cradcs. Settlement/ Basin has settled more than 1 inch or has Basin replaced or repaired to design Misalignment rotated more than 2 inches out of standards. alignment. Fre Hazard Presence oi chemicals such as natural No flammable chemicals present. ' gas,oi�,and gasoline. Vagetation 'Vegetation growing across and blocking No vegetation blocking opening to basin. more than 10%of the basin opening. Vegetetion growing in inlet/outlet pipe No vegetation or root growth present. joints that is more than six inches tall and less than six inches apart. � Pollution Nonflammable chemicals of more than No pollution present other than surface 1/2 cubic foot per three feet of basin film. length. � A-5 1/90 . ' KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL • NO. 5 - CATCH BASINS (Continued) Maintenancs Condldons Wh�n Msintenanc� RssuNs Expected 1 Component Dsfsct is NNd�d VYhen Malntenence ia Periormed Catch Basin Cover Cover Not in Place Cover le mlasing or only partially in place. Catch basln cover is closed. My open catch basin raqulrss maintanance. Locking Mechanlsm cannot be opened by one Mechanlem opens with proper tools. Mechanism Not malntenance pereon with proper toole. Working Bolts into frame have lesa than 1/2 inch of thread. Cover Difficult to One maintenance person cannot remove Cover can be removed by one Remove lid after apptying 80 Ibs.oi lift; intent ia maintenance person. keep cover from sealing off access to maintenance. Ladder Ladder Rungs Ladder ia unsafe due to missine rungs, Ladder meets design standards and Unsafe misali0nment,rust,cracks,or sharp ailows maintenence person safe access. edges. Metal Grates Grate with opening wider than 7/8 inch. Grate openings meet desiBn standards. (if applicable) Trash and Debrfs Trash and debris that Ia blocking more Grate free of trash and debris. than 20%of prate su�face. Damaged or Grate missing or broken member(s) of Grate is in place and meets design Missing the grate. standards. . A-6 1r90 . . KING COUNTY, WASHINGTON, SURFACE WATER DESI (JN MANUAL NO. 7 - ENERGY DISSIPATORS � Maintenance Conditlons When Maintenance ResuNs Expected _,,..•� Component Defect Is Needed When Maintenance Is Perlormed External: Rock Pad Missing or Moved Only one layer of rock exists above native Replace rocks to design standard. Rock soil in area five aquare feet or larger,or any exposure of native soil. Dispersion Trench Pipe Plugged with Accumulated sediment that exceeds 20% Pipe cleaned/flushed so that it matches Sediment of the design depth. design. Not Discharging Vsual evidence oi water discharging at Trench must be redesigned or rebuilt to Water Properly concentrated points along trench (normal standard. condition is a"sheet flow"of water along trench). Intent is to prevent erosion damage. ___. PerforaHons Over 1/2 of perforations in pipe are Clean or replace periorated pipe. Plugged plugged with debris and sediment. Water Flows Out Maintenance person observes water Facility must be rebuilt or redesigned to Top of"Distributor" flowing out during any storm less than standards. Catch 8asln the design storm or it is causing or appears likely to cause damage. Receiving Area Water in receiving area Is causing or has No danger of landslides. Over-Saturated potential of causing landslide problems. IntemaL• Manhole/Chamber Worn or Damaged Structure disslpating flow deteriorates to Replace structure to design standards. Posts, Baffles, t/2 or original size or any concentrated Sides of Chamber worn spot exceeding one square foot which would make structure unsound. Other Defects See"Catch Basins"Standard No. 5 See"Catch Basins"Standard No. 5 A g 1/90 � • KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL . ' . NO. 10 - CONVEYANCE SYSTEMS (Pipes & Ditches) � Ma(ntenance Condfdona When Maintenancs Results Expected Component Defect Is Nesded When Malntenance is Performed Pipes Sediment&Debris Aacumulated sediment that axceads 20% Pipe deaned of all sediment and debris. ; of the diameter of the pipe. Vegetatfon VegetaUon that reduces fres movement oi All vegetation removed ao water fiows water through pipes. freely through pipes. Damaged Protective coatfng is damaged; rust is Pipe rapaired or replaced. ceusing more than 5096 deterloration to any part oi pipe. My dent that decreasea the crose ssction Plpe repal�ed or replaced. area of plpe by more then 2096. Open Ditches Trash&Debris Trash and debris exceeds 1 cubic toot Trash and debris cleared from ditches. per 1,000 square teet of ditch and sfopes. Sediment Accumulated sediment that exceeds 20% Ditch cleaned/ilushed of ail sediment and oi the design depth. debris so that It matches design. Vegetation Vegetation that reduces free movement ot Water flowa freely through ditches. water through ditches. Eroslon Damage to See "Ponds"Standard No. 1 See"Ponde"Standard No. 1 Slopea Rock Lining Out of Maintenance person can sae native soii Replace rocks to design standard. Place or Missing (H beneath the rock lining. � Applicabie) Catch Basins See 'Catch Baslns"Standard No.5 See"Catch Basins" Standard No. 5 Debria Barriera See`Debris Barriers"Standard No.6 See"Debris Barriers"Standard No. 6 "� (e.g.,Trash Rack) A-11 1�� , KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL _ NO. 11 - GROUNDS (Landscaping} Maintenance Condttlons When Malotsnanc� Results Expected - Component Defect is Nesded When Maintenance is Performed General Weeds Weeds growing in more than 2096 of the Weeds present in less than 5%of the (Nonpoisonous) landscaped area (trees and shrubs only), landscaped area. Safery Hazard My presence of poison ivy or other No poisonous vegetation present in a poisonous vegetation. landscaped area. Trash or Litter Paper,can,bottles,totalling more than 1 Area clear of litter. cubic foot within�a landscaped area (trees and shrubs only)ot 1,000 square feet. Trees and Shrubs Damage Limbs or parts of trees or ahrubs that are Trees and shrubs with less than 596 oi the split or broken which affect more than total foliage with split or broken timbs. , 25%of the total foliage of the tree or shrub. Trees or shrubs that have been blown Tree or shrub in place free of injury. down or knocked over. Trees or shrubs which are not adequately Tree or shrub in place and adequately supported or are leaning over,causing supported; remove any dead or diseased exposure of the roots. trees. A-12 1/90 . K1NG COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL . NO. 12 - ACCESS ROADS/EASEMENTS ��--r' Matntenance Conditions When Maintenance R�suRs Exp�ctsd Component Defect is Nseded When Maintenance is Periormed General Trash and Debria Trash and debris exceeds 1 cubic toot Trash and debris cleared from site. per 1,000 aquare feet,i.e.,trash and debrfa would fill up one standard size garbaee cen. Blocked Roadway Debris which could damege vehicle tires Roadway free of debris which could (glass or metal). damage tires. My obstructions which reduce clearance Roadway overhead clear to 14 teet high. ' above road suriace to less than 14 feet. My obstructions restricting the acceas to Obstruction removed to allow et least a a 10-to 12-foot width for a distance of 12-foot access. more than 12 feet or any point restricting access to less than a 10-foot width. Road Surtace Settlement, When any surface defect exceeds 6 Road surface unitormly smooth with no Potholes, Mush Inches in depth and 6 square feet in area. evidence oi settlement,potholes,mush Spots, Ruts In general,any aurfece defect which spots,or ruta. hinders or prevents maintenance access. Vegetation in Road Weede growing in the road suriace that Road suriace free of weeds taller than 2 Surface are more than 6 inches tall and less than Inches. 6 inches apart within a 400-square-foot area. Shoulders and Erosion Damage Erosion within 1 foot of the roadway more Shoulder free of erosion and matching Ditches than S inches wida and 6 inchea deep. the surrounding road. Weeds and Brush Weeds and brush exceed 18 inches in Weeds and brush cut to 2 inches in height or hinder maintenance accesa. height or cleared in such a way as to �- allow maintenance access. A-13 1� Appendix 1 Retention Design � � . 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V`� � - I �: L�T SIZE: 46 ACRE ' S�TE A�DRESS: EXISTlNG INRERV.: 13,�95 S.F. REN�ON EMPORIUM LLC QUILD. fGOTPRINT: 4.41� S.F. S.W. SUNS�T BLVD. ::GNCRETE WALKS: 2,724 S.f. RENTON, WA 98D55 �S�H�Li PAVING: 9.151 S.F. _�r: /�RCHIT�CT: LL: FALL ARCHITECTURAL :' fa'J. AREA: 1E,286 5.�. 9607 39th AVE. S.W. ' .�l AREA ONLY SEATTLE, WA 98136 '° ^,01 fOR BIDDING FURP�SES (��6) 935-2240 ',i `JLL'JPER: ENGINtER: !.=�H & A4NETTE DEMPS JOHAN OYE P.E. �3:19 N.E. 24th STR_ET 12202 PACIFIC AVE 5 k':�T:;N, 'f+A =E05E TACOMA, WA 98444 ;,��5j �;E-6532 ;253) 537-812B REC06(IdENDED E'OR APPROVAL BY BY �H_ET N❑ BY � � � • � . . � � . � � s�� ' I'i � ' ��/{� ` � .•` •� �ii� . �� `� �� -; � �� , : �� , �� , �� ,, �' � � , _ • � . ` � � �... `,�' ,� • �� w�1 _ �� '�; ,� . ;,- �;�►�� • �`��?�� , ��-� � �.� �. � �"! µ � �� . 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' � � �� _ .��" " �� I��T' � .� � �' � ' � ��. .�� ..� ,�� ., _��. ��' � �� , ;� �� ' �il� �� i !, � • � � �� . `�� '� � �� '.��I��'�j �I�'' , . , , . . . . . . , �,��' �„i� , ! �iy� � . � � .�' � _ • � � ,� '� � � •��.� � • CLEARHiS CLEARHIS PreDev Event Summary: - BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ------- (cfs) (hrs) (ac-ft) ac /Loss PreDev 0.13 8.00 0.0488 0.49 SCS/SCS TYPE1A 2 yr PreDev 0.22 w 8.00 0.0791 _ S, 0.49 SCS/SCS TYPEIA 10 yr PreDev 0.33 �,y 8.00 0�84-�"'` 0.49 SCSlSCS TYPEIA 100 yr , -� Drainage Area: PreDev Hyd Method: SCS Unit Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 0.1850 ac 76.00 0.31 hrs impervious 0.3000 ac 98.00 0.07 hrs Totai 0.4850 ac Supporting Data: Pervious CN Data: Perv. part of lot 27 76.00 0.0450 ac Lot 3 76.00 0.1400 ac Impervious CN Data: Existing Pavement- Lots 27, 28, and 29 98.00 0.3000 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet Existing Site 150.00 ft 12.50°/a 0.4000 18.05 min Shallow Existing Site 200.00 ft 7.00% 27.0000 0.47 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet Grass 30.00 ft 23.00% 0.2400 2.59 min Sheet Pavement 170.00 ft 6.50% 0.01 10 1.46 min Developed Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ------- (cfs) (hrs) (ac-ft) ac /�oss Developed 0.19 8.00 0.0628 0.49 SCS/SCS TYPEIA 2 yr Developed 0.25 8.00 0.0977 0.49 SCS/SCS TYPEIA 10 yr Developed 0.41 8.00 0.1412 �i"�I 0.49 SCS/SCS TYPE1A 100 yr � ,: , , , � ' Drainage Area: Developed _ Hyd Method: SCS Unit Hyd Loss Method: SCS CN Number ! Peak Factor: 484.00 SCS Abs: 0.20 �� Storm Dur. 24.00 hrs Intv: 10.00 min �� _ Area CN TC �! Pervious 0.0900 ac 85.00 0.07 hrs '' Impervious 0.4000 ac 98.00 0.03 hrs Total 0.4900 ac Supporting Data: Pervious CN Data: Landscapes 85.00 0.0900 ac Impervious CN Data: Pavement 98.00 0.2400 ac Building, Walks 98.00 0.1600 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet Lawn 60.00 ft 17.00% 0.1500 3.54 min Shallow Pipe 55.00 ft 3.50% 27.0000 0.18 min Channel Pipes 65.00 ft 3.50% 21.0000 0.28 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet Pavement 135.00 ft 10.00°/o 0.0110 1.04 min Channel Pipe 65.00 ft 2.00% 11.0000 0.70 min Driving surfaces Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ------- (cfs) (hrs) (ac-ft) ac /Loss Driving surfaces 0.10 8.00 0.0343 0.24 SCS/SCS TYPEIA 2 yr Driving surfaces 0.15 8.00 0.0521 0.24 SCS/SCS TYPE�A 10 yr Driving surfaces 0.22 8.00 0.0739 0.24 SCS/SCS TYPE1A 100 yr Driving surfaces 0.06 8.00 0.0195 0.24 SCS/SCS TYPEIA 6 month Drainage Area: Driving surfaces Hyd Method: SCS Unit Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 0.0000 ac 85.00 0.00 hrs Impervious 0.2400 ac 98.00 0.03 hrs Total 02400 ac Supporting Data: Impervious CN Data: Pavement 98.00 0.2400 ac Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet Pavement 135.00 ft 10.00% 0.0110 1.04 min Channel Pipe 65.00 ft 2.00% 11.0000 0.70 min �tj.t Control Structure ID: Control - Multiple Orifice Structure , .:� ,� Descrip: Multiple Orifice 2�� Start EI Max EI Increment �� . 46.0000 ft 49.0000 ft 0.10 � �V Orif Coeff: 0.62 Bottom EI: 44.00 ft ��I D t-� Lowest Diam:� 2.4609 in out to 2nd: 0.6500 ft Diam: 1.6406 in Q �'� 2nd to 3rd: 0.4200 ft Diam: 1.6113 in 2�5� C Node ID: tank � Desc: 6' tank ' (�- Start EI: 46.0000 ft Max EI: 49.0000 ft Contrib Basin: Contrib Hyd: n�th_ Widt Void Ratio 6.0000 ft —�b.0000 ft 100.00 � �r� ��V �1,�- �0� 1� � Node ID: RPLvault �---- 2�d �� . � ��`��'�' , G z�o ��_ '�' �%f � I ks�� Desc: Manhole structure �j-�G�`7•1 {Z��1 O• Start EI: 42.0000 ft Max EI: 49.0000 ft Contrib Basin� Contrib Hyd: Storage Id: tank Discharge Id: Control RLPCOMPUTE [RPLvault] SUMMARY 2 yr Match Q: 0.1323 cfs Peak Out Q: 0.1319 cfs- Peak Stg: 46.65 ft -Active Vol: 154.91 cf 10 yr Match Q: 0.2168 cfs Peak Out Q: 0.2166 cfs - Peak Stg: 47.07 ft-Active Vol: 255.71 cf 100 yr Match Q: 0.3276 cfs Peak Out Q: 0.3276 cfs - Peak Stg: 47.58 ft- Active Vol: 379.93 cf � RPLCOMPUTE [RPLvault] DETAILED 2 yr Match Q: 0.1323 cfs Peak Out Q: 0.1319 cfs - Peak Stg: 46.65 ft-Active Vol: 154.91 cf " 10 yr Match Q: 0.2168 cfs Peak Out Q: 0.2166 cfs- Peak Stg: 47.07 ft-Active Vol: 255.71 cf 100 yr Match Q: 0.3276 cfs Peak Out Q: 0.3276 cfs- Peak Stg: 47.58 ft-Active Vol: 379.93 cf 2 yr event Time 11 12 2S Sum 1+2S 01 02S Elev 100.00 0.00 0.00 0.00 0.01 0.00 0.01 46.00 110.00 0.01 0.01 0.00 0.02 0.01 0.01 46.00 120.00 0.01 0.01 0.00 0.02 0.01 0.01 46.00 130.00 0.01 0.01 0.00 0.02 0.01 0.01 46.00 140.00 0.01 0.01 0.00 0.02 0.01 0.01 46.00 150.00 0.01 0.01 0.0� 0.03 0.01 0.02 46.00 160.00 0.01 0.01 0.00 0.03 0.01 0.02 46.01 170.00 0.01 0.01 0.01 0.03 0.01 0.02 46.01 180.00 0.01 0.01 0.01 0.03 0.01 0.02 46.01 190.00 0.01 0.01 0.01 0.04 0.01 0.02 46.01 200.00 0.02 0.02 0.01 0.04 0.02 0.02 46.01 210.00 0.02 0.02 0.01 0.04 0.02 0.02 46.01 220.00 0.02 0.02 0.01 0.04 0.02 0.03 46.D1 230.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 240.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 250.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 260.00 0.02 0.02 0.01 0.06 0.02 0.04 46.02 270.00 0.02 0.02 0.01 0.06 0.02 0.04 46.02 280.00 0.02 0.02 0.02 0.06 0.02 0.04 46.02 290.00 O.G3 0.03 0.02 0.07 0.02 0.04 46.02 300.00 0.03 0.03 0.02 0.07 0.03 0.05 46.02 310.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 320.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 330.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 340.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 350.�0 0.03 0.03 0.03 0.10 0.03 0.06 46.04 360.00 0.03 0.03 0.03 0.10 0.03 0.07 46.04 370.00 0.03 0.03 0.03 0.11 0.03 0.07 46.04 380.00 0.04 0.04 0.04 0.12 0.04 0.08 46.05 390.00 0.04 a.04 0.04 0.13 0.04 0.09 46.06 400.00 0.04 0.04 0.05 0.14 0.04 0.10 46.06 410.00 0.05 0.05 0.06 0.16 0.04 0.11 46.07 420.00 0.05 0.05 0.07 0.17 0.05 0.12 46.08 430.00 0.05 0.05 0.07 0.19 0.05 0.14 46.09 440.00 0.06 0.06 0.08 0.21 0.05 0.16 46.11 450.00 0.06 0.06 0.10 0.23 0.06 0.17 46.12 460.00 0.06 0.06 0.11 0.35 0.06 0.29 46.14 470.00 0.18 0.18 0.21 0.57 0.08 0.49 46.26 480.00 0.18 0.18 0.37 0.74 0.11 0.63 46.47 490.00 0.19 0.19 0.50 0.78 0.13 0.65 46.63 500.00 0.09 0.09 0.52 0.70 0.13 0.57 46.65 510.00 0.09 0.09 0.44 0.62 0.12 0.50 46.55 520.00 0.09 0.09 0.39 0.55 0.11 0.43 46.49 530.00 0.07 0.07 0.33 0.46 0.11 0.36 46.41 540.00 0.07 0.07 0.26 0.40 0.09 0.30 46.33 550.00 0.07 0.07 0.22 0.33 0.09 0.25 46.27 . 560.00 0.05 0.05 0.17 0.27 0.08 0.20 46.22 570.00 0.05 0.05 0.13 0.23 0.07 0.17 46.16 580.00 0.05 0.05 0.11 0.20 0.06 0.14 46.13 590.00 0.05 0.05 0.09 0.18 0.05 0.12 46.11 600.00 0.05 0.05 0.07 0.17 0.05 0.12 46.09 610.00 0.05 0.05 0.07 0.16 0.05 0.11 46.09 620.00 0.04 0.04 0.06 0.14 0.05 0.10 46.08 630.00 0.04 0.04 0.06 0.14 0.04 0.�9 46.07 640.00 0.04 0.04 0.05 0.13 0.04 0.09 46.07 650.00 0.04 0.04 0.05 0.12 0.04 0.08 46.06 660.00 0.04 0.04 0.04 0.12 0.04 0.08 46.06 670.00 0.04 0.04 0.04 0.12 0.04 0.08 46.05 • 680.00 0.04 0.04 0.04 0.11 0.04 0.08 46.05 690.00 0.04 0.04 0.04 0.11 0.04 0.08 46.05 _ 700.00 0.04 Q.04 0.04 0.11 0.04 0.07 46.05 710.00 0.03 O.a3 0.04 0.11 0.04 0.07 46.05 720.00 0.03 0.03 0.04 0.11 0.04 0.07 46.05 730.00 0.03 0.03 0.04 0.10 0.03 0.07 46.05 740.00 0.03 0.03 0.03 0.10 0.03 0.07 46.04 750.00 0.03 0.03 0.03 0.10 0.03 0.07 46.04 760.00 0.03 0.03 0.03 0.10 0.03 0.06 46.04 770.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 780.00 0.03 0.03 0.03 0.09 0.03 0.�6 46.�4 790.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 800.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 810.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 820.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 830.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 840.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 850.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 860.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 870.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 880.00 0.03 0.03 0.03 0.08 0.03 0.05 46.03 890.00 0.03 0.03 0.03 0.08 0.03 0.05 46.03 900.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 910.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 920.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 930.00 0.03 0.03 0.02 0.08 0.03 0.�5 46.03 940.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 950.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 960.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 970.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 980.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 990.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 1000.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 10�0.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 1020.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 ! 1030.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 1040.00 0.02 0.02 0.02 0.07 0.03 0.04 46.02 1050.00 0.02 0.02 0.02 0.07 0.03 0.04 46.02 1060.00 0.02 0.02 0.02 0.07 0.02 0.04 46.02 1070.00 0.02 0.02 0.02 0.07 0.03 0.04 46.02 1080.00 0.02 0.02 0.02 0.07 0.02 0.04 46.02 1090.00 0.02 0.02 0.02 0.07 0.03 0.04 46.02 1100.00 0.02 0.02 0.02 0.06 0.02 0.04 46.02 1110.00 0.02 0.02 0.02 0.06 0.02 0.04 46.02 1120.00 0.02 0.02 0.02 0.06 0.02 0.04 46.02 1130.00 0.02 0.02 0.02 0.06 0.02 a.04 46.02 1140.00 0.02 0.02 0.02 0.06 0.02 0.04 46.02 1150.00 0.02 0.02 0.02 0.06 O.Q2 0.04 46.02 1160.00 0.02 0.02 0.02 0.06 0.02 0.04 46.02 1�70.00 0.02 0.02 0.01 0.06 0.02 0.03 46.02 1180.00 0.02 0.02 0.01 0.06 0.02 0.03 46.02 1190.00 0.02 0.02 0.01 0.06 0.02 0.03 46.02 1200.00 0.02 �.02 0.01 0.06 0.02 0.04 46.02 1210.00 0.02 0.02 0.01 0.06 0.02 0.03 46.02 1220.00 0.02 0.02 0.01 0.06 0.02 0.04 46.02 1230.00 0.02 �.02 0.01 0.06 0.02 0.03 46.02 1240.00 0.02 0.02 0.01 O.Ofi 0.02 0.04 46.02 1250.00 0.02 0.02 0.01 0.06 0.02 0.03 46.02 1260.00 0.02 0.02 0.01 0.06 0.02 0.03 46.02 1270.00 0.02 0.02 0.01 0.06 0.02 0.04 46.02 1280.00 0.02 a.02 0.01 0.06 0.02 0.03 46.02 1290.00 0.02 0.02 0.01 0.06 0.02 0.04 46.02 1300.0� 0.02 0.02 0.01 0.06 0.02 0.03 46.02 1310.00 0.02 0.02 0.01 0.06 0.02 0.04 46.02 1320.00 0.02 0.02 0.01 0.06 0.02 0.04 46.02 1330.00 0.02 0.02 0.01 0.05 0.02 0.03 46.02 1340.00 0.02 0.02 0.01 0.05 0.02 0.03 46.02 1350.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 1360.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 1370.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 . 1380.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 1390.00 0.02 0.02 0.01 0.05 0.02 0.03 46.02 1400.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 ' 1410.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 1420.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 1430.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 _ 1440.00 0.02 0.02 0.01 0.05 0.02 0.03 46.0'i 1450.00 0.02 0.02 0.01 0.03 0.02 0.01 46.01 1460.00 0.00 0.00 0.00 0.00 0.01 0.00 46.00 10 yr event Time 11 12 2S Sum 1+2S 01 02S Elev 70.00 0.00 0.00 0.00 0.01 0.00 0.01 46.00 80.00 0.01 0.01 0.00 0.02 0.01 0.01 46.00 90.00 0.01 0.01 0.00 0.03 0.01 0.02 46.00 100.00 0.01 0.01 0.00 0.03 0.01 0.02 46.00 110.00 0.02 0.02 0.01 0.04 0.01 0.02 46.01 120.00 0.02 0.02 0.01 0.04 0.02 0.03 46.01 130.00 0.02 0.02 0.01 0.05 0.02 0.03 46.01 � 140.00 0.02 0.02 0.01 0.�6 0.02 0.04 46.02 150.00 0.02 0.02 0.01 0.06 0.02 0.04 46.02 160.00 0.02 0.02 0.02 0.07 0.02 0.04 46.02 �� 170.00 0.03 0.03 0.02 0.07 0.02 0.05 46.02 180.00 0.03 0.03 0.02 0.07 0.03 0.05 46.02 'i 190.00 0.03 0.03 0.02 0.07 0.03 0.05 46.03 200.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 I 210.00 0.03 0.03 0.02 0.08 0.03 0.05 46.03 220.00 0.03 0.03 0.02 0.08 0.03 0.06 46.03 , 230.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 240.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 j 250.00 0.03 0.03 0.03 0.10 0.03 0.07 46.04 26a.00 0.04 0.04 0.03 0.11 0.03 O.a7 46.04 270.00 0.04 0.04 0.04 0.11 0.04 0.08 46.05 280.00 0.04 0.04 0.04 0.12 0.04 0.08 46.05 I 290.00 0.04 0.04 0.04 0.13 0.04 0.09 46.05 300.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 310.00 0.04 0.04 0.05 0.14 0.04 0.10 46.06 320.00 0.05 0.05 0.06 0.15 0.04 0.11 46.07 330.00 0.05 0.05 0.06 0.16 0.05 0.12 46.08 340.00 0.05 0.05 0.07 0.17 0.05 0.12 46.09 350.00 0.05 0.05 0.07 0.18 0.05 0.13 46.09 360.00 0.05 0.05 0.08 0.19 0.05 0.14 46.10 370.00 0.06 0.06 0.09 0.21 0.05 0.15 46.11 380.00 0.06 0.06 0.10 0.23 0.06 0.17 46.12 390.00 0.07 0.07 0.11 0.24 0.06 0.18 46.14 400.00 0.07 0.07 0.12 0.26 0.06 0.20 46.15 410.00 0.08 0.08 0.13 0.30 0.07 0.23 46.17 420.00 0.08 0.08 0.16 0.32 0.07 0.25 46.19 430.00 0.08 0.08 0.17 0.35 0.08 0.28 46.21 440.00 0.10 0.10 0.20 0.39 0.08 0.31 46.24 450.00 0.10 0.10 0.23 0.43 0.09 0.34 46.28 460.00 0.10 0.10 0.25 0.63 0.09 0.54 46.31 470.00 0.28 0.28 0.42 0.98 0.12 0.86 46.52 480.00 0.28 0.28 0.68 1.25 0.18 1.07 46.85 490.00 0.29 0.29 0.85 1.28 0.22 1.06 47.07 500.00 0.14 0.14 0.85 1.13 0.22 0.91 47.06 510.00 0.14 0.14 0.72 1.00 0.19 0.81 46.90 520.00 0.14 0.14 0.63 0.87 0.17 0.70 46.79 530.00 0.10 0.10 0.55 0.76 0.15 0.60 46.69 540.00 0.10 0.10 0.48 0.68 0.13 0.56 46.60 550.00 0.10 0.10 0.43 0.62 0.12 0.49 46.54 560.00 0.08 0.08 0.38 0.54 0.11 0.42 46.48 570.00 0.08 0.08 0.32 0.47 0.10 0.37 46.40 580.00 0.08 0.08 0.27 0.42 0.10 0.32 46.34 590.00 0.07 0.07 0.24 0.38 0.09 0.29 46.29 600.00 0.07 0.07 0.20 0.34 0.08 0.26 4625 610.00 0.07 0.07 0.18 0.31 0.08 0.24 46.23 620.00 0.06 0.06 0.16 0.29 0.07 0.21 46.20 630.00 0.06 0.06 0.14 0.27 0.07 0.20 46.18 640.00 0.06 0.06 0.13 0.25 0.07 0.19 46.16 � 650.00 0.06 0.06 0.12 0.24 0.06 0.17 46.15 660.00 0.06 0.06 0.11 0.23 0.06 0.16 46.14 670.00 0.06 0.06 0.11 0.22 0.06 0.16 46.13 680.00 0.05 0.05 0.10 0.21 0.06 0.15 46.13 690.00 0.06 0.06 0.10 0.21 0.06 0.15 46.12 700.00 0.06 0.06 0.09 0.20 0.06 0.14 46.12 710.00 0.05 0.05 0.09 0.19 0.05 0.14 46.11 720.00 0.05 0.05 0.09 0.19 0.05 0.14 46.11 730.00 0.05 0.05 0.08 0.19 0.05 0.13 46.11 740.00 0.05 0.05 0.08 0.18 0.05 0.13 46.10 750.00 0.05 0.05 0.08 0.18 0.05 0.13 46.10 760.00 0.05 0.05 0.08 0.17 0.05 0.12 46.09 , 770.00 0.05 0.05 0.07 0.17 0.05 0.12 46.09 780.00 0.05 0.05 0.07 0.16 0.05 0.12 46.09 790.00 0.05 0.05 0.07 0.16 0.05 0.12 46.09 800.00 0.05 0.05 0.07 0.16 0.05 0.12 46.08 810.00 0.05 0.05 0.07 0.16 0.05 0.12 46.08 820.00 0.05 0.05 0.07 0.16 0.05 0.11 46.08 830.00 0.05 0.05 0.07 0.16 0.05 0.11 46.08 840.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 850.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 860.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 870.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 880.00 0.05 0.05 0.06 0.15 0.05 0.10 46.07 890.00 0.04 0.04 0.06 0.14 0.04 0.10 46.07 900.00 0.04 0.04 0.06 0.14 0.04 0.10 46.07 910.00 0.04 0.04 0.05 0.14 0.04 0.10 46.07 920.00 0.04 0.04 0.05 0.14 0.04 0.10 46.07 930.00 0.04 0.04 0.05 0.14 0.04 0.10 46.07 940.00 0.04 0.04 0.05 0.14 0.04 0.09 46.07 950.0� 0.04 0.04 0.05 0.13 0.04 0.09 46.06 960.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 970.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 980.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 990.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 1000.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 1010.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 1020.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 1030.00 0.04 0.04 0.05 0.13 0.04 0.08 46.06 1040.00 0.04 0.04 0.05 0.12 0.04 0.08 46.06 1050.00 0.04 0.04 0.04 0.12 0.04 0.08 46.05 1060.00 0.04 0.04 0.04 0.12 0.04 0.08 46.05 1070.00 0.04 0.04 0.04 0.12 0.04 0.08 46.05 1080.00 0.04 0.04 0.04 0.12 0.04 0.08 46.05 1090.00 0.04 0.04 0.04 0.11 0.04 0.08 46.05 1100.00 0.03 0.03 0.04 0.11 0.04 0.07 46.05 1110.00 0.03 0.03 0.04 0.11 0.04 0.07 46.05 1120.00 0.03 0.03 0.04 0.11 0.03 0.07 46.05 1130.00 0.03 0.03 0.04 0.11 0.03 0.07 46.05 1140.00 0.03 0.03 0.04 0.11 0.03 0.07 46.05 1150.00 0.03 0.03 0.04 0.10 0.03 0.07 46.05 1160.00 0.03 0.03 0.03 0.10 0.03 0.07 46.04 1170.00 0.03 0.03 0.03 0.10 0.03 0.06 46.04 1180.00 0.03 0.03 0.03 0.10 0.03 0.06 46.04 1190.00 0.03 0.03 0.03 0.10 0.03 0.06 46.04 1200.00 0.03 0.03 0.03 0.10 0.03 0.06 46.04 1210.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 1220.00 0.03 0.03 0.03 0.09 0.03 0.�6 46.04 1230.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 1240.00 Q.03 0.03 0.03 0.09 0.03 0.06 46.04 1250.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 1260.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 1270.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 1280.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 1290.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 1300.00 0.03 0.03 0.03 0.1� 0.03 0.06 46.04 1310.00 0.03 0.03 0.03 0.10 0.03 0.06 46.04 1320.00 0.03 0.03 0.03 0.10 0.03 0.06 46.04 1330.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 1340.00 0.03 0.03 0.03 0.09 0.03 0.06 46.04 � . 1350.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1360.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1370.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1380.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1390.00 0.03 0.03 0.03 0.08 0.03 0.05 46.03 1400.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1410.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1420.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1430.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1440.00 0.03 0.03 0.03 0.09 0.03 0.06 46.03 1450.00 0.03 0.03 0.03 0.06 0.03 0.03 46.03 1460.00 0.00 0.00 0.01 0.01 0.02 0.00 46.01 100 yr event Time 11 12 2S Sum 1+2S 01 02S Elev so.00 o.o� o.o� o.00 0.02 0.00 0.02 as.00 70.00 0.01 0.01 0.01 0.03 0.01 0.02 46.01 80.00 0.02 0.02 0.01 0.04 0.01 0.03 46.01 90.00 0.02 0.02 0.01 0.06 0.02 0.04 46.01 100.00 0.02 0.02 0.01 0.07 0.02 0.04 46.02 110.00 0.03 0.03 0.02 0.08 0.03 0.05 46.02 120.00 0.03 0.03 0.02 0.09 0.03 0.06 46.43 130.00 0.03 0.03 0.03 0.10 0.03 0.06 46.03 140.00 0.04 0.04 0.03 0.11 0.03 0.07 46.04 150.00 0.04 0.04 0.04 0.11 0.04 0.08 46.05 160.00 0.04 0.04 0.04 0.12 0.04 0.08 46.05 170.00 0.04 0.04 0.04 0.12 0.04 0.09 46.05 180.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 190.00 0.04 0.04 0.05 0.13 0.04 0.09 46.06 200.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 210.00 0.04 0.04 0.05 0.14 0.04 0.10 46.07 220.00 0.04 0.04 0.05 0.14 0.04 0.10 46.07 230.00 0.05 0.05 0.06 0.15 0.04 0.11 46.07 240.00 0.05 0.05 0.06 0.16 0.05 0.11 46.08 250.00 0.05 0.05 0.07 0.17 0.05 0.12 46.08 260.00 0.06 0.06 0.07 0.19 0.05 0.14 46.09 270.00 0.06 0.06 0.08 0.20 0.05 0.14 46.10 280.00 0.06 0.06 0.09 0.21 0.05 �.16 46.11 290.00 0.06 0.06 0.10 0.23 0.06 0.17 46.12 300.00 0.06 0.06 0.11 0.24 0.06 0.18 46.14 310.00 0.07 0.07 0.12 0.25 0.06 0.19 46.'14 320.00 0.07 0.07 0.13 0.27 0.07 0.21 46.16 330.00 0.07 0.07 0.14 0.28 0.07 0.22 46.17 340.00 0.07 0.07 0.15 0.30 0.07 0.23 46.18 35�.00 0.08 0.08 0.16 0.32 0.07 0.25 46.20 360.00 0.08 0.08 0.17 0.33 0.08 0.26 46.21 370.00 0.08 0.08 0.18 0.36 0.08 0.28 46.23 38�.00 0.10 0.10 0.20 0.39 0.08 0.31 46.25 390.00 0.10 0.10 0.22 0.42 0.09 0.33 46.28 400.0a 0.1� 0.1 a 0.24 0.46 0.09 0.37 46.30 410.00 0.12 0.12 0.27 0.51 0.10 0.41 46.34 420.00 0.12 0.12 0.31 0.55 0.10 0.45 46.39 430.00 0.12 0.12 0.34 0.60 0.11 0.50 46.42 440.00 0.14 0.14 0.38 0.67 0.11 0.56 46.48 450.00 0.15 0.15 0.44 0.73 0.12 0.61 46.55 460.00 0.15 0.15 0.48 1.03 0.13 0.90 46.60 470.00 0.41 0.41 0.71 1.53 0.19 1.34 46.89 480.00 0.41 0.41 1.05 1.88 0.28 1.59 47.32 490.00 0.41 0.41 1.27 1.88 0.33 1.55 47.58 „ 500.00 0.20 0.20 123 1.63 0.32 1.31 47.54 51 a.00 0.20 0.20 1.03 1.43 0.28 1.15 47.29 520.00 0.20 0.20 0.91 1.25 0.24 1.01 47.14 530.00 0.15 0.15 0.80 1.09 0.21 0.89 47.00 540.00 0.15 0.15 0.70 0.99 0.19 0.80 46.87 550.00 0.15 0.15 0.63 0.89 0.17 0.71 46.79 560.00 0.11 0.11 0.56 0.78 0.15 0.63 46.70 570.00 0.11 0.11 0.50 0.72 0.13 0.59 46.62 580.00 0.11 0.11 0.46 0.67 0.13 0.55 46.SB 590.00 0.10 0.10 0.43 0.63 0.12 0.51 46.54 600.00 0.10 0.10 0.39 0.59 0.12 a.48 46.49 . . • 610.00 0.10 0.10 0.37 0.55 0.11 0.44 46.46 620.00 0.09 0.09 0.34 0.51 0.11 0.41 46.42 630.00 0.09 0.�9 0.31 0.48 0.10 0.38 46.38 640.00 0.09 0.09 0.28 0.45 0.10 0.36 46.35 650.00 0.08 �.08 0.26 0.43 0.09 0.33 46.33 660.00 0.08 0.08 0.24 0.40 0.09 0.31 46.3Q ' 670.00 0.08 0.08 0.23 0.39 0.09 0.30 46.28 680.00 0.08 0.08 0.21 0.37 0.09 0.28 46.27 690.00 0.08 0.08 0.20 0.36 0.08 0.28 46.25 700.00 0.08 0.08 0.19 0.35 0.08 0.27 46.24 710.00 0.07 0.07 0.19 0.34 0.08 0.26 46.23 i 720.00 0.07 a.07 0.18 0.33 0.08 0.25 46.22 730.00 0.07 0.07 0.17 0.32 0.08 0.24 46.22 ! 740.00 0.07 0.07 0.17 0.31 0.08 023 46.21 750.00 0.07 0.07 0.16 0.30 0.07 0.23 46.20 760.00 0.07 0.07 0.16 0.29 0.07 0.22 46.19 770.00 0.07 0.07 0.15 0.28 0.07 0.21 46.19 780.00 0.07 0.07 0.14 0.28 0.07 0.21 46.18 790.00 0.07 0.07 0.14 0.27 0.07 0.21 46.17 800.00 0.07 0.07 0.14 0.27 0.07 0.20 46.17 810.00 0.07 0.07 0.14 0.27 0.07 0.20 46.17 820.00 0.07 0.07 0.14 0.27 0.07 0.20 46.17 830.00 0.06 0.06 0.13 0.26 0.07 0.19 46.16 840.00 0.06 0.06 0.13 0.25 0.07 0.19 46.16 850.00 0.06 0.06 0.12 0.25 0.06 0.19 46.16 860.00 0.06 0.06 0.12 0.25 0.06 0.19 46.15 870.00 0.06 0.06 0.12 0.25 0.06 0.18 46.15 880.00 0.06 0.06 0.12 0.25 0.06 0.18 46.15 890.00 0.06 0.06 0.12 0.24 0.06 0.17 46.15 900.00 0.06 0.06 0.11 0.23 0.06 0.17 46.14 910.00 0.06 0.06 0.11 0.23 0.06 0.17 46.14 920.00 0.06 0.06 0.11 0.23 0.�6 0.17 46.14 930.00 0.06 0.06 0.11 0.23 0.06 0.17 46.13 940.00 0.06 0.06 0.11 0.22 0.06 0.16 46.13 950.00 0.06 0.06 0.10 0.22 0.06 0.16 46.13 960.00 0.06 0.06 0.10 0.21 0.06 0.15 46.12 970.00 0.06 0.06 0.10 0.21 0.06 0.15 46.12 980.00 0.06 0.06 0.10 0.21 0.06 0.15 46.12 990.00 0.06 0.06 0.10 0.21 0.06 0.15 46.12 1000.00 0.06 0.06 0.09 0.21 0.06 0.�5 46.12 1010.00 0.06 0.06 0.09 0.21 0.06 0.15 46.12 1020.00 0.06 0.06 0.09 0.21 0.06 0.15 46.12 1030.00 0.06 0.06 0.09 0.20 0.06 0.15 46.12 1040.00 0.05 0.05 0.09 0.20 0.06 0.14 46.11 1050.00 0.05 0.05 0.09 0.19 0.05 0.14 46.11 1060.00 0.05 0.05 0.08 0.19 0.05 0.14 46.11 1070.00 0.05 0.05 0.08 0.19 0.05 0.14 46.'10 1080.00 0.05 0.05 0.08 0.19 0.05 0.14 46.10 1090.00 0.05 0.05 0.08 0.18 0.05 0.13 46.10 1100.00 O.a5 0.05 0.08 0.18 0.05 0.13 46.10 1110.00 0.05 0.05 0.08 0.17 0.05 0.12 46.09 1120.00 0.05 0.05 0.07 0.17 0.05 0.12 46.09 1130.00 0.05 0.05 0.07 0.17 0.05 0.12 46.09 1140.00 0.05 0.05 0.07 0.17 0.05 0.12 46.09 1150.00 0.05 0.05 0.07 0.17 0.05 0.12 46.09 1160.00 0.05 0.05 0.07 0.16 0.05 0.11 46.09 1170.00 0.05 0.05 0.07 0.16 0.05 0.11 46.08 1180.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1190.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1200.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1210.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1220.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1230.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1240.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1250.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1260.00 0.05 0.05 0.06 0_15 0.05 0.11 46.08 1270.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1280.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1290.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1300.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 . 1310.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 1320.00 0.05 0.05 0.06 0.15 0.05 0.11 46.08 - 1330.00 0.05 0.05 0.06 0.15 0.05 0.10 46.08 1340.00 0.04 0.04 0.06 0.14 0.04 0.10 46.07 1350.00 0.04 0.04 0.05 0.14 0.04 0.09 46.07 1360.00 0.04 0.04 0.05 0.14 0.04 0.09 46.07 1370.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 1380.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 1390.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 1400.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 1410.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 1420.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 1430.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 1440.00 0.04 0.04 0.05 0.14 0.04 0.09 46.06 1450.00 0.04 0.04 0.05 0.09 0.04 0.05 46.06 1460.00 0.00 0.00 0.02 0.02 0.03 0.00 46.03 2 yr Match Q: 0.1323 cfs Peak Out Q: 0.1319 cfs - Peak Stg: 46.65 ft-Active Vol: 154.91 cf 10 yr Match Q: 0.2168 cfs Peak Out Q: 0.2166 cfs - Peak Stg: 47.07 ft -Active Vol: 255.71 cf 100 yr Match Q: 0.3276 cfs Peak Out Q: 0.3276 cfs - Peak Stg: 47.58 ft-Active Vol: 379.93 cf I ` � ` Flow type: Description: Length: Slope: Coeff: Travel Time Sheet Existing Site 150.00 ft 12.50% 0.4000 18.05 min � Shallow Existing Site 200.00 ft 7.00% 27.0000 0.47 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time � Sheet Grass 30.00 ft 23.00% 0.2400 2.59 min Sheet Pavement 170.00 ft 6.50% 0.0110 1.46 min , _ s ' CLEARHIS Developed Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype " Event ------- (cfs) (hrs) (ac-ft) ac /�oss Developed 0.41 8.00 0.1412 0.49 SCS/SCS TYPE1A 100 yr Drainage Area: Developed Hyd Method: SCS Unit Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 0.0900 ac 85.00 0.07 hrs Impervious 0.4000 ac 98.00 0.03 hrs Total 0.4900 ac Supporting Data: Pervious CN Data: Landscapes 85.00 0.0900 ac Impervious CN Data: Pavement 98.00 0.2400 ac Building, Walks 98.00 0.1600 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet Lawn 60.00 ft 17.00% 0.1500 3.54 min Shallow Pipe 55.00 ft 3.50% 27.0000 0.18 min Channel Pipes 65.00 ft 3.50% 21.0000 0.28 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel T�me Sheet Pavement 135.00 ft 10.00% 0.01 10 1.04 min Channel Pipe 65.00 ft 2.00% 11.0000 0.70 min PreDev Event Summary: BasinlD Peak Q Peak T Peak Vol Area Method Raintype Event ------- (cfs) (hrs} (ac-ft) ac /Loss PreDev 0.33 8.00 0.1184 0.49 SCS/SCS TYPE1A 100 Y� Drainage Area: PreDev Hyd Method: SCS Unit Hyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 0.1850 ac 76.00 0.31 hrs Impervious 0.3000 ac 98.00 0.07 hrs Total 0.4850 ac Supporting Data: Pervious CN Data: Perv. part of lot 27 76.00 0.0450 ac Lot 3 76.00 0.1400 ac Impervious CN Data: Existing Pavement- Lots 27, 28, and 29 98.00 0.3000 ac Pervious TC Data: , = . . �ondn PROJECT: SHEET NO. . �� pe . CONSULTING ENGINEER BY: DATE: JOB NO. 12202 PACIFIC AVE. S. •TACOMA,WA 98444•(253)537-8128•FAX 531-1285 � c� � (� � � � � � ;_ � o � I.., � � ► � � o � � � � r \� M � r� � � �I N � C� � � N � ,-.� �/ � — , � � `�, � � a�; o 3 N � -- i _ � -_�' N ,� �L � flf; ; ; � � =-�� Q � l i ► � � M 4 i I _ ; , � � � � ; �1 .3 � � � �' � L � i � �v i 1. j � � I � � � -- i � � � / �� ,1 \Y• y � `�l T 1 � � � �� I . � � ` � y�/ i ` 1 � I � � . ' ,� � � : �� I �' ; � � . � , . � , i � , � s i � � � I J C � �1 i � i `� � I � �, (V �i � �� I �� ' ,�S!�i �'v>t ; . � �G I ,� � � � � ••� �.� �'� 6� `.� �b' � �i' ' `�. I � � � r } Appendix 2 Soils Report (partial) � � � � LEVEL 1 DOWNSTREAM ANALYSIS FOR Renton Emporium Sunset Bivd and Langston Ave. Renton, WA 98056 December 28, 2001 %��-,�=.% �'� �i;:v��s � �rw s� f�~�G �:� x �1 ��'� '� � r. _ .�. �. -�s y. . . _ ¢. _.._.. .. ;;;0. Prepared for Anneite Demps: 2308 NE 24"' St Renton, WA 98056 Project Architect — Fall Architecture 9607 39`h Ave SW Seattle, WA 98136 GTVOF Nt�v� : RECEIV � � � JUL 1 01��1 � � f � BUIt�DING DIVIS�ON r--- 4 , PROJECT OVERVIEW: This project involves the construction of a 4500 sf commercial structure and associated parking and landscaping on a vacant parcel approximately 0.45 acres located in the City of Renton. LEVcL 1 DOWNSTREAM DRAINAGE ANALYSIS: The site receives minimal surface runoff from the uphill parcels. Proposed runoff from the site is via an upgraded conveyance from the site to City Structure #16,D6-1. From this point runoff flows thrcugh structures #16,E6-1, to #16,E6-18 via a 12" concrete line, then across Sunsst to struc�ures #16,E6-18 and #16,E6-19 in 24" concrete pipe. From structure -19 Runoff flows south along Hardie Avenue across the Burlington-Northern ROW to SVI,! 7`" St. No capacity problems are evident, except the section along Sunset Ave. I � � � � Ii �� I �