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HomeMy WebLinkAboutPacket, Pre PLANNER 6/21/2010 .. ." . , . PRE-SUBMITTAL DISTRIBUTION LIST: Date Distributed: f.t, ~ 2J -{ 0 J Dave Puent - Building V Gilbert GordonlMelissa Fechtel- Fire v ~S5'R- JClIU~ - Traffic vi' Matt Stouder- Public Works/Engineering Chris Moorhead, Surveying Planner ~ ~~~~ -J~ ZlllO Pre..- Pa-ck_d- I o-f- 2~~ .' . . . City of Springfield Development Services Department 225 Fifth Street Springfield, OR 97477 541-725-3753 Phone 541-726-3689 Fax Pre-Submittal Meeting Case Number Assigned: PRE2010-00009 Date Submitted: 6/1812010 Proiect Name: LARKINIBACKPORCH 7LT SUB S 42N Project Description: Pre-Submittal for the creation of a 7-lot cluster subdivision with 6 duplexes on individual lots with one tract on S 42nd Street. t'brmally 327 & 341 S 42nd St, both homes were demolished. Application Type: Subdivision Tentative Job Address: Vacant - S 42nd St Assessor's & Tax Lot #: 1702323301701 DISCLAIMER: Applications will not be exempt from Development Code or procedural amendments that may occur between the time of the Pre-Submittal Meeting and Submittal of the Application for Development Review. Please contact our office at 541-726-3753 with any questions or concerns. A Planner will be assigned tbe following business day and will contact you to confirm tbe meeting date and time. PRE-SUBMITTAL REC'D JUi~ 1 8 2010 PlanJobPrintlpt 612112010 7:18:32AM . . Pre-Submittal Meeting Development Services Department Room 615/616 PRE-SUBMITTAL MEETING DATE: Friday, June 25, 2010 1. PRE-SUBMITTAL MTG #PRE2010-00009 (SUB TENT) LARKINIBACK PORCH Assessor's Map: 17-02-32-33 TL 1701 PROPERTIES Address: Vacant - S 420d Street (formerly 327 & 341 S 42nd Street, homes demolished) Existing Use: Vacant The applicant submitted plans to construct a 7-lot Cluster subdivision with 6 duplexes on individual lots with one tract. Meeting Date/Time: Friday, June 25, 2010 11:00 - noon DSD 616 Planner: Steve Hopkins PRE-SUBM\1TAL REC'D JUN 1 8 2010 City of Springfield Development Services Departm~nt 225 Fifth Street Springfie~.OR97477 . . Land Division Tentative Plan Partition, Subdivision . . . . -. A licant Name: Gre Larkin Com an : Back Porch Pro erties LLC Phone: Fax: 760-7881 Address: P.O. Box 832 Sweet OR 97386 A licant's Re .: Scott Morris Phone: Com an : Address: Olson & Morris Fax: 302-9790 485-3253 380 Ste 200 S OR 97477 Owner: Same as A licant Phone: Fax: Com an Address: ASSESSOR'S MAP NO: 17-02-32-33 TAX LOT NO S : 1701 327 South 42nd Street 1.0 Acres [g] S uare Feet D Pro osed Name of Subdivision: Back Porch Pro erties Cluster Subdivision Description of Pro osal: Existin Use: If you are filling in this form by hand, please attach your proposal description to this application. Vacant - .. . . 'D Associated A Iications: 2010 - (\)\M) Si ns: I Pre-Sub Case No.: D~ 6~\)O'1 Date: G, Reviewed b JUN 1 8 2010 ~ Case No.: Date: Ll./ _ Q!2- A Iication Fee: $ ,1.0 Technical Fee: TOTAL FEES: $ 3 Ltc cpo PROJECT NUMBER: nz '~b- OecA Revised 11.19,09 ~rcJ - m ~ 'Z-jl\ ',CS<J ,4-fr 1 of 10 . . Land Division Tentative Submittal Requirements Checklist. NOTE: . ALL of the following items MUST be submitted for BOTH Pre-Submittal and Submittal. .. If you feel an item on the list below does not apply to your specific application, please state the reason why and attach the explariation to this form. JJ .3 :gJ Rf ~ ~ ~ )S. ~ ~ Application Fee - refer to the Development Code Fee Schedule for the appropriate fee calculation formula. A copy of the fee schedule is available at the Development Services Department. Any applicable application, technology, and postage fees are collected at the pre-submittal and submittal stages. Land Division Tentative Application Form Narrative explaining the purpose of the proposed development, the existing use of the property, and any additional information that may have a bearing in determining the action to be taken. Copy of the Deed Copy of a Preliminary Title Report issued within the past 30 days documenting ownership and listing all encumbrances. . Copy of the Land Division Plan Reduced to 81f2"X 11", which will be mailed as part of the required neighboring property notification packet. Right-of-Way Approach Permit Application provided where the property has frontage on an Oregon Department of Transportation (ODOT) facility. Three (3) Copies of the Stormwater Management System Study with Completed Stormwater Seoping Sheet Attached - The plan, supporting calculations, and documentation must be consistent with the Engineering Design Standards and Procedures Manual. Three (3) Copies of the Traffic Impact Study prepared by a Traffic Engineer in accordance with SDC 4.2-105 A.4. Traffic Impact Studies (TIS) allow the City to analyze- and evaluate the traffic impacts and mitigation of a development on the City's transportation system. In general, a TIS must explain how the traffic from a given development affects the transportation system in terms of safety, traffic operations, access and mobility, and immediate and adjoining street systems. A TIS must also address, if needed, City, metro plan and state land use and transportation policies and objectives. Seven (7) Copies of the Following Plan Sets for Pre-Submittal OR Eighteen (18) Copies of the Following Plan Sets for Submittal f2( ~ All of the following plans must include the scale appropriate to the area involved and sufficient to show detail of the plan and related data, north arrow, and date of preparation. All plan sets must be folded to 8W' by 11" and bound by rubber bands. a. Site Assessment of Existing Conditions PRE-SUBMITTAL RECID ~ Prepared by an Oregon licensed Landscape Architect or Engineer JUN 1 8 2010 ~ Vicinity Map Revised 11.19.09 4 of 10 . . . ~The name, location, and dimensions of all existing site features including buildings, curb cuts, trees, and impervious surface areas, clearly indicating what is remaining and what is being removed. For existing structures to remain, also indicate present use and required setbacks from proposed property lines. NThe name, location, dimensions, direction of flow and top of bank of all watercourses and required riparian setback that are shown on the Water Quality Limited Watercourse Map on file in the Development Services Department ~ The 100-year floodplain and floodway boundaries on the site, as specified in the latest adopted FEMA Flood Insurance Rate Maps or FEMA approved Letter of Map Amendment or Letter of Map Revision !8l The Time of Travel Zones, as specified in SDC 3.3-200 and delineated on the Wellhead Protection Areas Map on file in the Development Services Department g1 Physical features including, but not limited to trees 5" in diameter or greater when measured 4 V2 feet above the ground, significant clusters of trees and shrubs, riparian areas, wetlands and rock outcroppings ~ Soil types and water table information as mapped and specified in the Soils Survey of Lane County. A Geotechnical Report prepared by an Engineer must be submitted concurrently if the Soils Survey indicates the proposed development area has unstable soils and/or a,high water table b. Land Division Tentative Plan ~ Prepared by an Oregon licensed Land Surveyor ~ City boundaries, the Urban Growth Boundary, and any special service district boundaries or railroad right-of-way which cross or abut the proposed land divisiori -gI Location and width of all existing and proposed easements on and abutting the proposed land division . ~ Boundaries of entire area owned by the property owner, of which the proposed land division is a part, as well as dimensions and size of each parcel and the approximate dimensions of each building site indicating the top and toe of cut and fill slopes to scale ~ Location and type of existing and proposed street lighting, including type, height, and- area of illumination rg, Location, widths, conditions, and names of all existing and proposed streets, alleys, dedications or other right-of-ways within or adjacent to the proposed land division. Proposed streets should also include approximate radius of curves and grades and relationship to any projected streets as shown on the Metro Plan, TransPlan, Conceptual Development Plan, or Conceptual Local Street Map. IX Location of existing and required traffic control devices, fire hydrants, power poles, transformers, neighborhood mailbox units and similar public facilities ~ Location and dimensions of existing and proposed driveways ~ Location of existing and proposed transit facilities ~ Location and width of all existing and proposed sidewalks, sidewalk ramps, pedestrian access ways and bike trails . ~ Location, size and type of plantings and street trees in any reqpRrsijaMfitAtr~C'D JUN 1 S lOlO Revised 11.19.09 5 of 10 .. . : .. 181' Location and size of existing and proposed utilities on and adjacent to the site including sanitary sewer mains,.stormwater management systems, water mains, power, gas, telephone, and cable TV. Indicate the proposed connection points ~ The los;ations of.all areas to be dedicated or reserved for public use, with -the purpose, condition or limitations of the reservations c1early.indicated j8f Future Development Plan where phasing' or large lots/parcels are proposed as specified in SDC 5.12-120 E. c. Stormwater Management Plan rg Prepared by an Oregon licensed Civil Engineer j8I Planting plan prepared by an Oregon licensed Landscape Architect where plants are proposed as part of the stormwater management system es Roof drainage patterns and discharge locations ~ Pervious and impervious area drainage patterns ~ The size and location of stormwater management systems compor!ents, including but not limited to: drain lines, catch basins, dry wells and/or detention ponds; stormwater quality measures; and natural drainageways to be retained ~ Existing and proposed spot elevations and contours lines drawn at 1 foot interyals (for land with a slope over 10 percent, the contour lines may be at 5 foot intervals) ~ Amount of proposed cut and fill D Additional Materials That May be Required .IT IS THE APPLICANT'S RESPONSIBILITY TO DETERMINE IF ADDITIONAL STANDARDS/APPLICATIONS APPLY TO THE PROPOSED DEVELOPMENT. THE APPLICANT SHOULD CONSIDER UTILIZING PRE-DEVELOPMENT MEETINGS AS DISCUSSED IN SDC 5.1-120: o o o o D o o o o Revised 11.19.09 Proposed deed restrictions and a draft of any Homeowner's Association Agreement Additional plans and documentation for submittal of a Cluster Subdivision proposal as specified in SDC 3.2-230 . Riparian Area Protection Report for properties located within 150 feet of the top of bank of any Water Quality Limited Watercourses (WQLW) or within 100 feet of the top of bank of any direct tributaries of WQLW A Geotechnical Report prepared by an engineer must be submitted concurrently if there are unstable soils and/or a high water table present Where the development area is within an overlay district, address the additional standards of the overlay district If five or more trees are proposed to be removed, a Tree Felling Permit as specified in SDC 5.19-100 A wetland delineation approved by the Oregon Division of State Lands must be submitted concurrently where there is a wetland on the property Any required federal or state permit must be submitted concLK~j;~)( ~r, widence the permit application has been submitted forreview rt(t:-~uBIVIII iAl REC'O Where any grading, filling or excavating is proposed with the develli./tintrg:,~1gand and Drainage Alteration permit must be submitted prior to development 6 of 10 Owner Signatures . . This application form is used for both the required pre-submittal meeting and subsequent complete application submittal. Owner signatures are required at both stages in the application process. An application without the Owner's original signature will not be accepted. Pre-Submittal Owner: The undersigned acknowledges that the information in this application is correct and accurate for scheduling of the Pre- Submittal Meeting. If the applicant is not the owner, the owner hereby grants permission for the applicant to act in his/her behalf. I/we do hereby acknowle_ e that I/we are legally responsible for all statutory timelines, i rmatio.? e/ an~reqUirements conveyed to my represe:~tive. ~ Date: '--' ture ~~/ LOF~'~ Submittal I represent this application to be complete for submittal to the City. Consistent with the completeness check performed on this application at the Pre-Submittal Meeting, I affirm the information identified by the City as necessary for processing the application is provided herein or the information will not be provided jf not otherwise contained within the submittal, and the City may begin processing the application with the information as submitted. This statement serves as written notice pursuant to the requirements of ORS 227.178 pertaining to a complete application. Owner: Date: Signature Print PRE-SUBMITTAL REC'D JUN 1 8 2010 Revised 11.19.09 2 of 10 IT] BWEBElLE WAY . . CITY OF SPRINGFIELD VICINITY MAP PRE2010-00009 Vacant - S 420d Street !n o ~ rn PRE.SUBMITTAL REC'D JUN 1 8 2010 SITE Map 17-02-32-33 Tax Lot 1701 North + It o ~ '<t rn . . " I j 1, j " i i! i L '-=- ---=--::_;;.-=---=---=--::..:--=- -;;______~:-;) ~I t'_!L --- - - -""- J...~.I ~ - - - --'" - - -'- -_ ~_-~--__--4 ----I--~-,---~---- -- ..... I I - - ---ftIf--- - ~ - -l ----- ---::'C-.:y -:-n:::-1lIl _~ ~_ . -t '\ -t '\ - o i i i i i i ; wi igli'~ ~ ~ ~ ~ I ~ · !i .~~ ~ ; i i ~ ; I ii lil!~ · ~ ; ; ! ~ · .~ S e ~. . I ~ I e. ~ ~ i I i I ; I ~! ~;!~ I ~ ~ I ~ i ~ ~~j I !! i ill -t, I ! I i !i ~ ~ & ~i ~. . i . . \. - IUI' n ~I q .~ ~ " ~ U ! ~ ii~ ~ ~ ;; u a : l.~ ~ ;; .. · Ii ! a ~ i~ ~ ~ ~~ , ~. "I~ ~ ", E i i a" j <>. '! ~. E a~ ~ g!f g ji ~ Ii ' -t.. -toft. -t.. -t -,:I ... , ;;:0 . rn . L.. en C c= :z ~ ..... S \ ~ O<l ,..., r-- ~ = ;;:0 Q rn (") R ---zy d ~ ~ . [fl ::r: ~9.,~[Tj "' -i ii'^~'~' "'v, rSJONSo "'OJ"" ~~ ,"""----- "'1\l.EO~~ -- .~vmvm lIy - REVJI:WEtln ro. Site Development Plan far River Valley Builders Spri.ngf(eld. LantI CO"tmCJI Ontgon. -~~ s:&:..~.:h COllBulting ..-.:let cu. -. ~l' lIII:I-tM Engineeru _CIIlII:.:r-jl.JlIlO r.OO'I_.m:s &SUl'VCycn . . SUBDIVISION APPLICA nON NARRA nVE Assessors Map 17-02-32.32 tI 1701 327 South 42nd Street Applicant: Back Porch Properties L.L.C. ~AFf This application proposes the division of a vacant one acre parcel into six lots which will each be used for construction of a duplex. The preliminary plan submitted also shows a : separate unit ofland labeled as "tract" that would include the driveway access to each of the twelve units, visitor parking, a storm drainage facility and landscape area. An issue for discussion at the submittal meeting is whether the tract area should be platted as a separate parcel or would best be incorporated into the individual lots and an easement lJe used over the same area that provides for the various common usages. The subdivision is proposed under the provisions of SDC 3.2-230 for cluster subdivisions. The tentative plan submitted is designed in conformance with the requirements for cluster subdivisions including setbacks, lot coverage standards and open space. A building design plan has been submitted for a duplex on Lot 1 that faces 42nd Street. This plan shows design elements required for the street front unit including street side door opening, connecting walkway, etc. A version of this plan that includes all required cluster subdivision standards will be used on the remaining five lots. PRE-SUBMITTAl REC'O JUN 1 8 2010 . . .~IIf11 .. Fidelity National Title Company of , Oregon . LOT BOOK REPORT Prepared for: GREG LARKIN We have searched our records as to the following described property: SEE EXHIBIT "A" and as of June 10, 2010 at 8:00 a.m. we find that the vesting for the subject real property is: GREGORY D. LARKIN -CONTINUED- PRE.SUBMITTAl REC'D JUN 1 8 2010 . . LOT BOOK REPORT PAGE 2 We also find the following apparent encumbrances within ten year prior to the effective date hereof: 1. City liens, if any, in the City of Springfield. 2. Taxes owing for the 2007-2008 fiscal year in the amount of $2227.74 plus interest if any on Map 1702323301701, Acct # 1022654, Levy Code 1900 Taxes owing for the 2008-2009 fiscal year in the amount of$246 1.24 plus interest if any if any Taxes owing for the 2009-2010 fiscal year in the amount of$2499.56 plus interest 3. Rights of the public in and to streets, roads and highways. 4. Any easements within the vacated cul-de-sac East of South 4200 Street. 5. Easement to Springfield Utility Board for utilities along the Westerly 10 feet as recorded August 23,1977, Reception No. 7753414, Official Records of Lane County, Oregon. 6. Ordinance # 3841 vacating one-half of cul-de-sac East of South 4200 Street, recorded July 6, 1978, Reception No. 7846719, Official Records of Lane County, Oregon. '7. Jurisdictional Transfer document recorded December 23,2003, Reception No. 2003-122204, Official Records of Lane County, Oregon. 8. Easement to John Khastedai and Gloria I. Smith for ingress and egress on the Northerly 10 feet as recorded November 19, 2004, Reception No. 2004-089585, Official Records of Lane County, Oregon. -CONTINUED- PRE-SUBMITTAL REe'D JUN 1 8 2010 . . LOT BOOK REPORT PAGE 3 9. Deed of Trust, including the tenns and provisions there, Grantor: Timothy 1. . Nasalroad and Gregory D. Larkin, Trustee: Dean S. Kaufinan, Attorney at Law, Beneficiary: Frontier Investment Co" an Oregon corporation, recorded May 12, 2006, Reception No. 2006-033296 Official Records of Lane County, Oregon in the Amount of $258,750.00. The beneficial interest was assigned to Frontier L-406-D Joint Venture, recorded June 5, 2006, Reception No. 2006-038620. Modification of Deed of Trust to correct the legal description, recorded July 7, 2009, Reception No. 2009-038944. II. Right, title and interest of Timothy 1. Nasalroad as disclosed by the Deed of Trust above. END OF ENCUMBRANCES NOTES: A. This Company finds no other judgments or liens against the vestee therein. TIllS IS NOT A TITLE REPORT: This is an informational report only. It is not title insurance nor a guarantee. This service does not include supplemental reports or any other information. Liability is limited to the amount paid for this report. Thank you for doing business with FIDELITY NATIONAL TITLE INSURANCE COMPANY OF OREGON. If you have any questions, please feel free to contact our office at (541) 683-5422. FIDELITY NATIONAL TITLE INSURANCE COMPANY OF OREGON LONDA MINYARD Title Officer PRE.SUBMITTAl RECID JUN 1 8 2010 . . . ,. After recording return to and mail tax statements to: Division or Chler Dep..~v CI.,.k ~Mn M,aa, lane County Oaada a"d Recards 'U~~g~ m~W~1J~ll~~Jlm~l~IW~~t 02: 18~::':: RPR-DEED Cn\=l 5\n=19 CASHIER 01 $15.00 $11.00 $10.00 ~ t'") . . .?z... ~ r.-.e, OR q7~~'" , STATUTORY WARRANTY,. DEED Timothy L. Nasalroad, Grantor, conveys and warrants to Gregory D. Larkin, Grantee, all his rights, title and interest in the following described real property, free and clear of encumbrances except as specifically set forth below, situated in Lane County Oregon. See Exhibit A attached hereto and made a part hereof. Subject to and excepting: Covenants, conditions, restrictions and easements of record. The true and actual consideration for this transfer is other. BBJ'OJUI: SIGNING OR ACCEPTING rRn INS'rRtlMEIlT, THE PBRSON TRANSFERRING Il'BE TITLE SROtl1.O INQUIRE ABOU1' '1'IIE PERSON'S RIGHTS, Ii' ANY, UNDER ORS 195.300, 195.301 JUlIl 195.305 TO 195.336 AND SECTIONS 5 TO 11, CllAPTJi:R 424, OREGON LAWS 2007. THIS INS'l'RllMBHT DOllS NOT ALLOW USE OF rHE PROPER'l'Y DESCRIBIlD IN THIS INS'1'1WMEHT IN VOLATION 01' APl'LICABLE: LAND USE LAWS .IlHD REGULATIONS. BBJ'ORK SIGNING OR ACCZP'l'ING THIS INS'l'RIDCEN'r, '1'IIE PERSON ACQUIRING I'EE 'l'I'1'I.Z TO ':HE PROPER'l'Y SROUUl CIlECK WITH '1'IIE APPROPRIAn CIn OR CotlN'l'Y PLlNNING DEPAR'rM!NT 'rO VERIFY THAT '1'IIE UNIT 01' LIIND DING 'l'IlAHSFlUUU!D IS A LAWI"llLLr ES!ABLISRED LO'1' OR pAaCBL. AS DEI'INIlD IN ORS 92.010 OR 215.010, TO V2ll.IFY rIlE APPIIOVED OSES 01' TIIB LIIND OR PARCEL, TO DB'1'ZRMINI: ANY LIMIrs ON LAWSOITS AGAINS!!' I'ARNZHG OR J'ORES!!' PRACTICES. AS DEI'INED IN ORS 30. 930, JUlIl TO INQOIRE ABOur TIIB RIGRTS 01' NBIGRBORING PROPER'l'Y 0liHERS. IF AHY. OHDU ORS . . .., Slate of California County of Fresno On tJ\ ~~ I 'bo0&1 J. Embrv personally appeared Ji'm o~ before me, , Notary Public (here insert name and title of the officer), L. Ma.s<<./ruad who proved to me on the basis of satisfactory evidence to be the person(s') whose name(1) is/iJFe subscribed to the withj~ instrument and acknowledged to me that he/!Ile/tRliv executed the same in his/lleffl!leit-authorized capacity(;es>, and that by his/I!er/4lMilr signature(.a'j on the instrument lI1e person(~, or the entity upon behalf of which the peISOn{-) acted, executed the instrument. I certify under PENAL 1Y OF PERJURY under the laws of the Slate of California that the foregoing paragraph Is true and correct. Signature WITNESS my hand and official seal. ~ (Seal) ~@)- . J. EMB;Y - f ~ .~- NOlCOMM.IlB2l5D8 a -. Nt'lPu8LIC.~urfWIA5 fRESNO COUJn., t....."t.,....,N7IlIllkr12'1l12 (notary)(12-07) PRE-SUBMITTAL RECID JUN 1 8 2010 E.crow No. D2.109278-8B .46 - TI!IhONor No. 00109278 EXHIBIT ONE Beginning at a point on the West line of the Thos. Edwards Donation land Claim No. 55. Township 17 South, Range 2 West of the Willamene Meridian. 420.9 feet North of 'the most Westerly Southwest r;orner of said Donation land Claim: IUnning thence East 322.1 feet; thence Nonh 133 feet; thence West 322.1 feet to the West tine of 6aid Denation land Claim; them:e South along said West fine 133 feet to the point of beginning, in lane County, Oregon. PRE-SUBMITTAL REeD JUN 1 8 2010 . 09:05 FAX 541 4"'~253 OLSON' & MORRIS To; . IOjl $ .",~ J:.. .6.... I4i 001 00/18/2010 "P.RIN~." a;;' .. PUBLIC WORKS DEPARTMENT 1 Engineering Division Pllone: (541) 726-3753 Fax: (541) 736-1021 STORMWATER MANAGEMENT SYSTEM SCOPE OF WORK _..______..._.______~_..u__ (Arllil hcl"w f/l/~ JiiHljil!f!d ,Jill l>r Appl;('urtf) -,;-~..-~~-:-...:....~~--.----..............-- (Plea.. relllm /0 MalT Stouder@ Cily a/Springfield Public Work. ingineerin~: Fax H 7.16-IOil. Phone # 736-1035), _ I#JJail.-nrslouder@Jcispring/ield.ofus Project Name: g... \<. ~....l. P'.r~<.' (. iv.l-v fvlo" Assessors Parcel " - 6'1. -3< ~ "5, - /'10 I Land Users): 1'11)"- Project Size (Acres): 11.0 Appro"- Impervious Area: o. .. b A-L~< ~ lProject Description (Include a copy of Assessor's map): ILL proposL.\ .-~ ~" Ca"~,,,-,l- b cLrl...><<"", ror IJ.' ,In L)' I. ,; T'~L.J.. I~"" "'; li , Ir-'lf'l '~U,.,,~,UI':"} r~...Ii,~) (1'" ";),.J.... Applicant: Date: Phone #: lFax#: Email: oL50l'.)" ,lAvM'< - 5. :T' M,z/l 10 16 z;:de (141) 302-9790 (S-4J) 4'3~ - 3~S3 -5I.CI,r ~ t:/J~o''''''M,,'''1.~l), .. ~(J ~ . n Go I..h r N 1:J.1.., -, f&..J;...,k:.,1 b,e. C>....ol c:"...._o.... J...W4_) Drainage Proposal (Puolic connection(s). discharge focation(s), etc. Art"ch additional sheet(s) if necessary' !~""'A'\ ...'" ~,..;,~..') :5'J.,~ J"".;..~. i .\.,,~ .!;" ,Jk.. f"'rAl ,."J..lkJ dV"'l +L.. l""r'-.'><~'~'1" .t.. .5,..l1-. 4,";' $+........., ,1..:, ~~...1, " ...J'r~k -h ,,<.:..~J- 'f!... ...-1-..." ..1"'_;)" t._ ./1.., (1"0(.v1; Prol)osed Stormwater Best Manaoemcnt Practices: 'There is 5,850 of cxi$ting pavement on the sileo An area equal to this ur less will be colle~ted in a' standard catch basin and piped. The remainder of the driveway/parking will go into a biD-swalc prior to entering public system. fAri?a bldoll' rIJi.\' lillt! lillt.'rI cJtJt bl' tIll! Cit1' rmlllll!/nrllc!cI tcl rIll! AfJOlictJlII) (At 0 minimum. all box!!.'; ~ht!r;:ked by the Cily on fhe/ronl and back of ,his5heef shall be..mbmilred or fin 0 Iica/ion 10 be c:om fele vr silPml1lal, a/thou h other re lirentl!nts mav he hecessary.) Drainal!e Study TVlle IEDSPM Section 4.03.2): INote. UI'I mav be substituted for Rational Method) g Small Site Study - (use Ra.ionnJ Method lor calculations) o Mid-Level Development Study - (u.. Unit Hydrograph M<thod for cvlc~lations) o FuIl Drainage Development Study - (use Unit Hydrogrnph Method for Clllculations) Environmental Considerations: o Wellhead lone; pJ - q't "f? o Wetland/Riparian: AlA o Soil Type: tJxL~'1- fARM'! ~Ai!f} U/I1!I.b'5< Downstream Analvsis: Hcunl/ff .511f'/ aA'I ilAln :lE1N/A . o Flow line for starting water surface devation: o Design HGL to use for starting water surface elevation: o Manhole/Junction to lllke analysis to: o Hillside Deveiopment .tJJl.. o Floodway/Floodplain: -12.fr o Other Jurisdictions N^ Retum to Matt Stouder@ City of Springfield. "mail: mstoudertffJci.sorinafield.or.us. FAX: (541) 736-1021 PRE.SUBMITTAl REC'D JUN 1 8 2010 . . 4.253 OLSON & 1I0RRIS . ~002 06/18/2010 09:05 FAX 541 COMPLETE STUDY ITEMS "" BWii:!d upon ,h,'! bl(OTllIalion pfOl'idr:cI on tht!,"'on' nfl/1is sheel, lhe,tb/lolring l'eprestJn'~' a mil1imum of.\r~1 is ~eededf.or alJ app'kuJiolllO be C'omplelefor SlIbmillal11'ilJr t'f!,<;J1ect 10 druit/age, hOll'el-'e,", IhlJ tI,f{ ~!wuIM not be ~t:{1d In IIedu tif/he Spro/'?fi/ ,tefd. /Jrlrf!fapml117f (ode (5DO Qr Ihl! lilY's Engineering Oesig/J Manual. Compliance wIth f Jase req~lItement.~ D.es 1101 cons /11 e srte apprfwat Addl,lol1al.sila .~pecijic information may be "f!qujr~d. NOlI?: Upon 5copll1g 8'/f~et sllbmilla/, ensure compleledform has been .'ifgned In ,hft spacrt pro1'lded b~/aw: I ;"rorr"i'lu,"O;l~ (,,(l8)/D Interim Design Standnrd,lWater Qnality (EDSPM Chapter J) ~J~ . 18l 0 AU I}on~buildjng rooftop (NBR) impervious surf~ces shoJI be I,re-trented (c"g. multi-chambered catclJbasin w/oil firtration mcdto.) fOr :Jtonn""i4tc::r 'p..Il.l1i~" f\t;iditionnlly, n minimum of SO'x. of ih.:: NBR imfJ'l=rvlou::i 'SUl'r~l;~ ~i)aJJ be trebled by vegetated methods. . ~ D Where required. vegetative stonnwatcr design ::;hall be consistent with imerim design standards (EDSPM Section 3.02), set forth by the Bureau of Environmental Services (BBS) Or Clean Water Services (CWS). B 0 For new N8R impervious area. less than 15.000 square feet, a simplified design approach may be followed 015 specified by the BES for vegetative treatment '" ~ 0 If a 5tomlwater n-es.tment swule is proposed, submit calculatlonslspecltlcations for sizing, velocity, flow, side slopes, hononl slope. and seed mix consistent with either 6CS or CWS requirements., ! ~D 0 Water Quality calculations as r~quited in Sl;Ction 3.Q3.1 of the E.DSPM , ~11 bunding rooftop mounted equ!pmenr. Or other fluid containing equipment located out:Jide oflhe building. sliall be provided with secondary containment or weather resistanl enclosure Ceneml Study Requirement. (F.DSPM Se.ti.n 4.03) . 12S ~ Drainage study prepared by a Profe.,lon"1 Civil Engineer licensed in the ,late of Oregon. . o ' A complete drainage study. as required in, EDSPM Section 4.03.1, including a hydrological stu.dy map. ~ C.alculatlons showing system capacity fot n 2-)'(:~r storm t;\lent and overflow effects of a 25~yenr storm. eVent 19' D The time of concentration (Te) shall be determined using a 10 minute start time for dc:veloped basins. Review of Down.lre.,n Syslem (EDSPM Section 4.03.4.C) \ 0, ~ A downstrcam drainage analysis as described in EDSPM Section 4.03.4.C. On.site drainage shall be governed by ~he . Oregon Plumbing Specinlly Code (OPSC). o ~ Elevations of the HeL and flow lines for both city and private systems where applicable. Design of Stnrm Sy'tems (EDSPM Section 4.04) 123' 0 Flow lines, slopes. rim ~Ieyations. pipe type Rnd sizes Clearly indicated on the plan scl 'gJ . 0 Minimum pipe cover shall be 18 inches for reintbrced pipe and 36 inches far plain concrete and plastic pipe materials. or proper engineering calculations shall be provided when less. The cover shall be sufficient. to support an"SO,OOO lb load without failure of the pipe srruclur~. . 0 -0 M!lI1ning', "n" valu.. for pip.. shall be cOllsislem whh Table 4.1 of rhe 8DS? All ,torm pipe, shall be designed 10 achieve a minimum velOCitY .fthrec ()I feet persccond at 0.5 pipe full based on rable 4-1 as well. Other/Mise ~ D Existing and proposed cOllto':lrs.locDt~d at one foot interVal. Include spot elevations and site grades showing how site drains Q D I>rivate stormwater easements shall be clearly depicted on plans whtn private storm,yater flO\Ys fron'! Qnc property to another ' . o jSlOl)'welts Shall not rece:iv€ run.offfi"om any 5urtace w/o being treated by one or more BMPs, with, the ~x~eption of r~sidcntial building roofs (EDSP Section 3.03.4.1\). Additional provisions o.J)ply to this tiS required by Ole DEQ" Refer to the wcbsite: 'WW\\ .dt!a.stme"or,u~1 wolarnuncl\\l:a!ttichl}me.hcm for mort: infonnntion. o J2!belention pond, shall bc designed to limit runofflo pre-development rales for lhe Z t1irough 25-year 'torm evenlS WT"L~f()r", s"all b~ i"dfldad as, an arlacllme!nt. inside! tlle/ront cf)~el', QftJli! stor~Qter.stmi.' Form Vel'Sion 2: March 2004 (:, If.; ll.~i Date . IMI'()III:IN/: eN(;II'il;(,R Pl.E4SE: R/:.",W DHOW ,1 As me engineer of record, I hereby certifY the above required items ure complete an.d included with the submitted storll1water study and plnn set SignRture PRE-SUBMlTIAl RECIO JUN 1 8 2010 . . . . Storm Water Design Report DRAFT Project: Date: Designer: Type of Project: , Back Porch Properties Cluster Subdivision June 18, 2010 S. Morris Medium Density Residential - Duplex Development Proiect Overview The proposal is to develop an approximate I acre parcel on South 42nd Street into a 6 or 7 . lot cluster subdivision with 6 duplexes. The duplexes will be served by a single private driveway and there will be some auxiliary parking. . There is approximately 5,850 square feet of existing AC paving on the property that is to be removed with the reconfigured site. There were also (2) houses on the property that have been removed. Proposed Destination The drainage from the site will be directed to an existing 12" storm pipe that was stubbed to the property during the South 42nd Street improvement project. This stub connects to the new storm line that was placed in South 42nd Street and has adequate capacity to serve the proposed development with no on site detention. Proposed Pollution Control Facilities A bio-swale will be constructed at the southwest corner of the project. We have designed approximately 6,450 square feet to sheet drain into this facility. The swale will have a 6 foot bottom, 4: 1 side slopes, and run at a slope of 0.5%. This will slow down the velocity to meet contact time requirements. - The remaining 4,865 square feet of paving will be collected in dual chamber catch basins and tied into the piped storm system. Since we have an existing paved area of 5,850 square feet to be removed, we are not proposing fossil filter inserts in these basins. Proiect Site Data Impervious Area = 6450 ft2 (bio-swale) II 21,450 ft2 (All Impervious) Water Quality Intensity = 0.19 inches per hour (Rational Method) Peak Flow Intensity = 2.1 in/hr (10 yr, 10 min.) Run off Coefficient = 0.90 (paving) PRE-SUBMITIAl REC'D JUN 1 8 2010 ~ . . . Water Qualitv Flow Calculations - Rational Method Qwq = CIA = (0.90) x (0.19) x (0.15 Ac) = 0.026 cfs (bio-swale) , Peak Flow Calculations - Rational Method (Entire Site including Bldg) QplO = CIA = (0.90) x (2.1) x (0.49 Ac.) = 0.93 cfs Bio-Swale Calculations (attached calculation sheet) Depth of Flow = 0.05 Feet Velocity = 0.12 ft/sec Length of Swale = 66 Feet Contact Time = (66 ft) I (0.12 ft/sec) = 550 Sec. = 9.16 minutes This configuration does meet the minimum contact time of9.0 minutes. Therefore we are proposing to put the area drain at the flow line of the swale and not provide detention. We are also proposing one check dam at the midpoint of the swale.. Peak Flow Calculation (attached calculation sheet) The peak flow for the 10 year storm is 0.93 cfs, which results in minimum pipe diameter of7.25 inches. Therefore, the 12 inch concrete pipe stub to the property is adequate to serve the development. PRE-SUBMITTAL RECID JUN 1 8 2010 < . . Bio-swale Calculation ~"~?;~~~'.~e'~cj-~'~~'?:ri.~,.,"J,,'-:'~~::, .. -, ~'~ -'.: . Friction Method Solve For ",:,.~'~> - '.':::.' 1~'put'6at~\ "'--," '.,,-. " ,. ~". Roughness Coefficient Channel Slope Left Side Slope Right Side Slope Bottom Width Discharge ,"'oj,_'_ Results,:', . Normal ~epth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Fraude Number Flow Type v GIJFln.'put Data .'; ,-' ". ,.., ... :" ";. .,-\",:.:, '. Downstream Depth Length Number Of Steps ,."" -'Y:'""l\-'" ,.~:'~~'__'", ."-'0', ~-". -. .' I: -. qVF Output Data ..C';._.' ;.E. ~.;,-_., .1,_ ;'..,c",.,'f Upstream Depth, Profile Description Profile Headloss Downstream Velocity Upstream Velocity Normal Depth Critical Depth Channel Slope Critical Slope PRE.SUBMITTAL REC'D JUN 1 82010 61181201011:19:39 AM Bentley Systems, Inc. Haestad Methods Solution Center Bentie~ FlowMaster" [Oa.'01.066.00] 27 Siemons Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 Page' . 1 of .1 . . . Peak Flow Pipe Diameter Calculation .~~b!~::D~~~ripti?n:\ '-" -,' .~, . ~,. "" . ",.,'''";",, ..,;,;..; .,,:;,--"'..l\ Friction Method Solve For Manning Formula Full Flow Diameter iQ\~i[\'.~~t~{;J c'!:.f';~li':: f:~;:,/'.L ,-'. ,. " "., ~ ',;'. , " Roughness Coefficient 0.013 Channel Slope 0.01000 fVft Normal Depth 7.25 in Diameter 7.25 in Discharge 093 (PIs Results .,. .. ,. Diameter 7.25 in Normal Depth 7.25 in Flow Area 0.29 ft, Wetted Perimeter 1.90 ft Top Width 0.00 ft Critical Depth 0.47 ft Percent Full 100.0 % Critical Slope 0.01116 fVft ~ Velocity 3.24 fVs Velocity Head 0.16 ft Specific Energy 0.77 ft Fraude Number 0.00 Maximum Discharge 1.00 (PIs Discharge Full 0.93 ft3/S Slope Full 0.00998 fVft Flow Type SubCritical GVF In'pJi:Data' -,-. ;.",,.,,,,M., 0.';. ','_,0 "", 'f.. . ,'" Downstream Depth 0.00 in Length 0.00 ft Number Of Steps 0 ~S~BZQqt~4r~~f~_?~;2;;';Z', ", I;,.,";;'" , Upstre'am Depth 0.00 in Profile Description Profile Headloss . 0.00 ft Average End Depth Over Rise 0.00 % Normal Depth Over Rise 100.00 % " {i,:'_'.! '. ~ <, ;1" .- ~ ,) .' ,',<-.:~ . '~,. ;, ".J ;,. . PRE-SUBMIITAl REC'D JUN 1 8 2010 S/18/2010 11:21:54AM Bentley Systems, Inc. Haestad Methods Solution Center Bentley FlowMaster [08.01.06S.00] 27 Siemons Company Drive Suite 200 W Watertown, CT OS795 USA +1-203-755-1S6S Page 1 of 2