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HomeMy WebLinkAboutApplication APPLICANT 5/4/2021City of Springfield Development & Public Works 225 Fifth Street Springfield, OR 97477 Land Division Tentative Plan Partition, Subdivision SPNINGFIE� 1 Application r❑ Partition Tentative Pre -Submittal: x❑ Subdivision Tentative Pre -Submittal: Partition Tentative Submittal: ❑ Subdivision Tentative Submittal: ❑ Required Project Information (Applicant: complete this section) Applicant Name: Chad Wilson Phone: Company: Fax: Address: PO Box 5143. Eugene, OR 97405 Applicant's Rep.: Curtis Thomas Phone'S41-302-9830 Company: Metro Planning, Inc. Fax' Address: 846 A St. Springfield, OR. 97477 Property Owner: Phone: Company: Fax: Address: ASSESSOR'S MAP NO: 17-02-33-42 TAX LOT NOS : 00300 & 00700 Property Address: 5524 B Street. Springfield, OR. 97478 Size of Property: 17,843 Acres ❑ S uare Feet X❑ Proposed Name of Subdivision: D05CrIPtlon of If you are filling in this form by hand, please attach your proposal description to this application. Pro oral: A three lot partition. Existing Use: Single-family home. 3 !! of Lots/Parcels: Total acreage of parcels/ 3 allowable density; Proposed # N/A Dwell unies Signatures: Please si nand rint our name and date in thea Required Project Information (City Intake Staff., Associated Applications: ro riate box on the next a e. complete this section) Signs: n Pre -Sub Case No.: tid� 1_), I' I Z/ Date:S Z Reviewed b • MI��� Case No.: Date: Reviewed b : Application Fee:: $ Technical Fee: $ Posta a Fee: $ TOTAL FEES: $ �)O•�� PROJECT NUMBER: Revised 1/7/14 kl 1 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. 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 acknowledge that I/we are legally responsible for all statutory timelines, information, requests and requirements conveyed to my representative. �VsYICJv i+"C, 1�\'Cd\ Date: Signature Print 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 if 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. r �('ofJ� (z _V) Date: Signature Revised 1/7/14 kl 2 of 10 Land Division Tentative Application Process 1. Applicant Submits a Land Division Tentative Application for Pre -Submittal • The application must conform to the Land Division Tentative Submittal Requirements Checklist on pages 4-6 of this application packet. • A pre -submittal meeting to discuss completeness is mandatory, and pre -submittal meetings are conducted every Tuesday and Friday, from 10:00 am - noon. • Planning Division staff strives to conduct pre -submittal meetings within five to seven working days of receiving an application. 2. Applicant and the City Conduct the Pre -Submittal Meeting • The applicant, owner, and design team are strongly encouraged to attend the pre - submittal meeting. • The meeting is held with representatives from Public Works Engineering and Transportation, Community Services (Building), Fire Marshall's office, and the Planning Division and is scheduled for 30 to 60 minutes. • The Planner provides the applicant with a Pre -Submittal Checklist specifying the items required to make the application complete if it is not already complete, and the applicant has 180 days submit a complete application to the City. 3. Applicant Submits a Complete Application, City Staff Review the Application and Issue a Decision • A complete application must conform to the Land Division Tentative Submittal Requirements Checklist on pages 4-6 of this application packet. • A Type II decision, made after public notice, but without a public hearing, unless appealed, is issued within 120 days of submittal of a complete application. • Mailed notice is provided to property owners and occupants within 300 feet of the property being reviewed and to any applicable neighborhood association. In addition, the applicant must post one sign, provided by the City, on the subject property. • There is a 14 -day public comment period, starting on the date notice is mailed. • Applications are distributed to the Development Review Committee, and their comments are incorporated into a decision that addresses all applicable approval criteria and/or development standards, as well as any written comments from those given notice. Applications may be approved, approved with conditions, or denied. • At the applicant's request, the Planner can provide a copy of the draft land use decision prior to issuing the final land use decision. • The City mails the applicant and any party of standing a copy of the decision, which is effective on the day it is mailed. • The decision issued is the final decision of the City but may be appealed within 15 calendar days to the Planning Commission or Hearings Official. Revlsea 1/7/14 kl 3 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 explanation to this form. [X] 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 & Public Works Department. Any applicable application, technology, and postage fees are collected at the pre -submittal and submittal stages. 0 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. Density - list the size of property (acres), maximum allowable density and the density proposed. ® 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 81/2"x 11", which will be mailed as part of the required neighboring property notification packet. ©A Right -of -Way Approach Permit Application provided where the property has frontage on an Oregon Department of Transportation (ODOT) facility. ®A Three (3) Copies of the Stormwater Management System Study with Completed Stormwater Scoping Sheet Attached - The plan, supporting calculations, and documentation must be consistent with the Engineering Design Standards and Procedures Manual. NRA 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. ® Four (4) Copies of the Following Plan Sets for Pre -Submittal OR Three (3) Copies of the Following Plan Sets: ® 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 81/2" by 11" and bound by rubber bands. a. Site Assessment of Existing Conditions ® Prepared by an Oregon licensed Landscape Architect or Engineer Revised 1/7/14 kJ 4 of 10 ® Vicinity Map ® 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. &Vhe 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 & Public Works 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 NAhe Time of Travel Zones, as specified in SDC 3.3-200 and delineated on the Wellhead Protection Areas Map on file in the Development & Public Works Department FINhysical features including, but not limited to trees 5" in diameter or greater when measured 4'/z feet above the ground, significant clusters of trees and shrubs, riparian areas, wetlands and rack outcroppings ®fsoil 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 X❑ 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 division ® 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 ® 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. ® 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 ®'Aocation of existing and proposed transit facilities [S/Location and width of all existing and proposed sidewalks, sidewalk ramps, pedestrian access ways and bike trails EP�kocation, size and type of plantings and street trees in any required planter strip Revised 1/7/14 kl 5 of 10 ® 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 N. Indicate the proposed connection points EINhe locations of all areas to be dedicated or reserved for public use, with the purpose, condition or limitations of the reservations clearly indicated QEEuture Development Plan where phasing or large lots/parcels are proposed as specified in SDC 5.12-120 E. c. Stormwater Management Plan ® Prepared by an Oregon licensed Civil Engineer ❑ Planting plan prepared by an Oregon licensed Landscape Architect where plants are proposed as part of the stormwater management system X❑ Roof drainage patterns and discharge locations X❑ Pervious and impervious area drainage patterns The size and location of stormwater management systems components, 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 intervals (for land with a slope over 10 percent, the contour lines may be at 5 foot intervals) ❑ Amount of proposed cut and fill ❑ 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: QA Proposed deed restrictions and a draft of any Homeowner's Association Agreement ®A Additional plans and documentation for submittal of a Cluster Subdivision proposal as specified in SDC 3.2-230 dA 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 INA A Geotechnical Report prepared by an engineer must be submitted concurrently if there are unstable soils and/or a high water table present ❑N'A Where the development area is within an overlay district, address the additional standards of the overlay district ®A If five or more trees are proposed to be removed, a Tree Felling Permit as specified in SDC 5.19-100 ®A A wetland delineation approved by the Oregon Division of State Lands must be submitted concurrently where there is a wetland on the property EA Any required federal or state permit must be submitted concurrently or evidence the permit application has been submitted for review ©A Where any grading, filling or excavating is proposed with the development, a Land and Drainage Alteration permit must be submitted prior to development Revised 1/7/14 kl 6 of 10 IEA Where applicable, any Discretionary Use or Variance as specified in SDC 5.9-100 and 5.21-100 NBA An Annexation application, as specified in SDC 5.7-100, where a development is proposed outside of the city limits but within the City's urban service area and can be served by sanitary sewer [RA All public improvements proposed to be installed and to include the approximate time of installation and method of financing Revised 1/7/14 kl 7 of 10 SPRINGFIELD moil • ' ZI 10 1 Ifl a I =1 4• • -.7F7972M 225 FIFTH - DEVELOPMENT AND PUBLIC WORKS 0225 FIFTHSTREET OREGON SPRINGFIELD, OR 97477 PHONE: 541.726.3753 FAX 541.736.1021 w spnngheldorgov December 6, 2013 REQUIRED STORMWATER SCOPING SHEET USE POLICY: In October 2003, Springfield Public Works released a trial "stormwater scoping sheet," provided to help engineers and developers meet stormwater requirements in the Springfield Development Code (SDC) and Engineering Design Standards and Procedures Manual (EDSPM). After a five month trial period, it became apparent that users of the scoping sheet submitted much more complete applications than non-users. An added bonus was a decrease in the overall review time spent on the applications, resulting in quicker notice of decisions. As a result of the benefits of the scoping sheets, the City has decided to make their use a mandatory process. Current city policy is that the use of stormwater scoping sheets is required for all applications which require development review. All applications submitted to the City shall provide a copy of a completed stormwater scoping sheet with the application packet. Attached with this letter is the latest version of the scoping sheet, which reflects changes requested by the development community. PLEASE NOTE: SUBMITTED APPLICATIONS WILL NOW BE REQUIRED TO SUBMIT A COMPLETED STORMWATER SCOPING SHEET, STORMWATER STUDY AND PLANS IN CONFORMANCE WITH THE SCOPE REQUIREMENTS DIRECTIONS FOR USING STORMWATER SCOPING SHEETS ARE AS FOLLOWS: I.) Obtain scoping sheet from application packet, city website, or other location. 2.) Fill out project information (top half of front sheet) prior to commencement of work on stormwater study. (Note: Do not sign scoping sheet until it is received from the City with requirements checked.) 3.) Mail, fax, or email all pages to: City of Springfield, Development and Public Works Dept., Attn: Clayton McEachern. - 4.) Receive completed scoping sheet (tilled out by the City) indicating minimum requirements for a complete stormwater study. 5.) Include four (4) copies of complete scoping sheet (signed by engineer at the bottom of page 2), stormwater study and plans that comply with the minimum required scope with submittal of application packet. The scoping sheet shall be included as an attachment, inside the front cover of the stormwater study. Stormwater scoping sheets can be found with all application packets (City website and the DPW front counter) as well as on the Engineering and Construction Resources webpage located at: httn://www.s ri teld- or-eov/DP W/EmmneerineandConstructionResources htm under the Public Improvement Permit Projects Forms section. Thank you in advance for working with the City of Springfield with this new process. Sincerely, Clayton McEachern, PE City of Springfield, Development and Public Works Email* emeeachem@springLeld-or.gov Phone: (541) 736— 1036 Fax: (541) 736 — 1021 DEVELOPMENT AND PUBLIC WORKS SPRINGFIELD 225 FIFTH STREET �O&EGON SPRINGFIELD OR 97477 PHONE541.725.3753 FAX' 541,726 1021 www. springfield-or go v STORMWATER MANAGEMENT SYSTEM SCOPE OF WORK below this fine filled out by Applicant) — ------ (Please return to Clation McEachern @ Ciry ofSpringneld Development and Public Works, Fax # 736-1021, Phone # 736-1036), email.emceachern@springfield-or.gov Project Name: Applicant: Assessors Parcel #: Date: Land Use(s): Phone #: Project Size (Acres): Fax #: Approx. Impervious Area: Email: Project Description (Include a copy of Assessors map): Drainage Proposal (Public connection(s), discharge location(s), etc. Attach additional sheet(s) if necessary: Proposed Stormwater Best Management Practices: ----------- (Area below this fine filled out b r theClt d Re[ d m theApplicant) ------------- (At a minimum, all boxes checked by the City on the front and back oJ'this sheet shall be submitted or an a licatiion to be complete for submittal, although other requirements may beneeessar .) Drainage Study Type (EDSPM Section 4.03.2): Mote UH may be substituted for Rational Method) ❑ Small Site Study — (use Rational Method for calculations) ❑ Mid -Level Development Study—(use Unit Hydrograph Method for calculations) ❑ Full Drainage Development Study — (use Unit Hydrograph Method for calculations) Environmental Considerations: ❑ Wellhead Zone: ❑ Hillside Development: ❑ Wetland/Riparian: ❑ Floodway/Floodplain: ❑ Soil Type: ❑ Other Jurisdictions Downstream Analysis: ❑ N/A ❑ Flow line for starting water surface elevation: ❑ Design HGL to use for starting water surface elevation: ❑ Manhole/Junction to take analysis to: Return to Clayton McEachern @ City of Springfield, email: cmceachem@springfield-o ,gov, FAX: (541) 735-1021 COMPLETE STUDY ITEMS * Based upon the information provided on the front of this sheet, the following represents a minimum of what is needed far an application to be complete,for submittal with respect to drainage; however, this lis/ shouldnol be used in lieu orate Springfield Development Code (SDC) or the City's Engineering Design Manual. Compliance with these requirements does not constitute site approval, Additional site spec fic information may be required Note. Upon scoping sheet submittal, ensure completedform has been signed in the space provided below: Interim Design Standards/Water Quality-DSPM Cha pter3 Req'd N/A ❑ ❑ All non -building rooftop (NBR) impervious surfaces shall be pre-treated (e.g. multi-chambered catchbasin w/oil filtration media) for stormwater quality. Additionally, a minimum of 50% of the N13R impervious surface shall be treated by vegetated methods. ❑ Where required, vegetative stonnwater design shall be consistent with design standards (EDSPM Section 3.02), set forth in Chapter 2 of the Eugene Stormwater Management Manual. ❑ ❑ For new NBR impervious area less than 15,000 square feet, a simplified design approach may be followed as specified by the Eugene Stormwater Management Manual (Sec2A.1). ❑ ❑ If a stonnwater treatment Swale is proposed, submit calculations/specifications for sizing, velocity, flow, side slopes, bottom slope, and seed mix consistent with City of Springfield or Eugene's Stormwater Management Manual. ❑ ❑ Water Quality calculations as required in Section 3.03.1 of the EDSPM. ❑ ❑ Al1. building rooftop mounted equipment, or other fluid containing equipment located outside of the building, shall U U Drainage study prepared by a Professional Civil Engineer licensed in the state of Oregon. ❑ F-1 A complete drainage study, as required in EDSPM Section 4.03.1, including a hydrological study map. ❑ F Calculations showing system capacity for a 2 -year storm event and overflow effects of 25 -year storm event. ❑ E The time of concentration (Te) shall be determined using a 10 minute start time for developed basins. U U A downstream drainage analysis as described in EDSPM Section 4.03.4.0. On-site drainage shall be governed by the Oregon Plumbing Specialty Code (OPSC). Elevations of the HGL and flow lines for both city and private systems where applicable. ❑ F Design of Storm Systems (EDSPM Section 4.04). ❑ 0 Flow lines, slopes, rim elevations, pipe type and sizes clearly indicated on the plan set. ❑ F-1 Minimum pipe cover shall be 18 inches for reinforced pipe and 36 inches for plain concrete and plastic pipe materials, or proper engineering calculations shall be provided when less. The cover shall be sufficient to support an 80,000 Ib load without failure of the pipe structure. Manning's "n" values for pipes shall be consistent with Table 4-1 of the EDSP. All storm pipes shall be designed to achieve a minimum velocity of three (3) feet per second at 0.5 pipe full based on Table 4-1 as well. U U Existing and proposed contours, located at one foot interval. Include spot elevations and site grades showing how site drains. ❑ 7 Private Stormwater easements shall be clearly depicted on plans when private stormwater flows from one property to another. ❑ Drywells shall not receive runoff from any surface w/o being treated by one or more BMPs, with the exception of residential building roofs (EDSP Section 3.03.4.A). Additional provisions apply to this as required by the DEC. Refer to the website: hftp:/i.w.dea.state.or.us/wa/uio/uichtm for ma to information. ❑ ❑ Detention ponds shall he designed to limit runoff to pre -development rates for the 2 through 25 -year storm events. *This farm shall be included as an attachment, inside the front cover, of the stormwaler study. • IMPORTANT: ENGINEER PLEASE READ BELOW.IND SICN! As the engineer of record, I hereby certify the above required items are complete and included with the submitted stormwaler study and plan set. Signature Date Form Version 5: June 2015 Written Statement —Tentative Partition Background The applicant owns two adjacent parcels: 17-02-33-92-00700 and 17-02-33-42-00300. The applicant is proposing to partition the two parcels as a three -lot partition. Currently, there is a single-family home on the property. No development is proposed with this application except for the platting of two lots into three. Density: TL 700 is 0.23 acres and TL 300 is 0.18 acres for a total acreage of 0.41 acres. Both Tax Lots are zoned Low Density Residential which allows for 6 to 14 dwellings per acre. The current density is 4.9 dwelling units per acre and the tentative partition proposes 7.3 dwelling units per acre. In this written statement SDC 5.12.115 Tentative Plan - General, SDC 5.12-120 Tentative Plan Submittal Requirements and SDC 5.12-125 Tentative Plan Criteria are addressed to demonstrate that this application clearly meets all of the SDC requirements and criteria. SDC 5.12-115 Tentative Plan—General Any residential /and division shall conform to Me fol/owing standards: A. The lot/parcel dimensions shal/conform to the minimum standards ofthis Code. When lots/parcels are more than double the minimum area permitted by the zoning district, the Diredorsha//require that these lots/pares be arranged: 1. To allow re -division; and 2. To a//ow for Me extension ofstreets to serve future lots/parcels. 3 Placement ofstructures on Me larger lowparcels shall be subject to approva/by the Director upon a determination that the potential maximum densityofthe largerlot/parce/is not impaired. In order to make this determination, Me Director may require a Future Development Plan as specified in Section 512120E Response: The subject property in an area zoned LDR (Low Density Residential). The proposed parcels conform to the minimum development standards required by SDC as stated below. This standard has been met. e Double frontage lots/parreIs shall beavoided, unless necessary to prevent access to residential development fmm collector and arteria/streets or to overcome specific topographic situations. Response: The proposed tentative partition will not result in the creation of double frontage parcels; this standard does not apply. C Panhandle lots/parcels shall comply with Me standards specified in Sectors 32-215 and 4.2-120A. In the case of multiple panhandles in Subdivisions, construction ofneressary utilites to serve all approved panhand/e lots/party/s shall =ur prior to recording the Plat Response: All of the lots will have a driveway access via a shared driveway. The two panhandle lots will have a shared access easement of 26' wide, or 13' each. As a condition of approval for this tentative partition, construction of necessary utilities will occur prior to recording the Plat. D, elocklengM forlocalsbeets is as specified in 5ecton 4.2-115 Response: 4.2-115 is no longer a code section. Therefore, this criterion does not apply. The proposed tentative partition utilizes an existing street network. SDC 5.12-120 Tentative Plan Submittal Requirements A Tentative Plan application shall contain the elements necessary to demonstrate that the provisions of this Code are being fulfilled. EXCEPTION: In the case of Partition applications with the sole intent to donate land to a public agency, the Director, during the Pre -Submittal Meeting, may waive any submittal requirements that can be addressed as part of a future development application. Written Statement for Chad Wilwn A. General Requirements 1. The Tentative Plan, Including any required Future Development Plan, shall be prepared by an Oregon Licensed Land Surveyor on standard sheets of18"x24" The services ofand Oregon registered Engineer may also be required by the Co in order to resolve utility issues(especially stormwatermanagement, street design and transportation issues), and site constraint and/or water quality issues Response: The tentative partition plan has been prepared by Ryan Erickson, a licensed Oregon Land Surveyor as required. 2 The scale ofthe Tentative Plan shall be appropriate to the area involved and the amount ofdetail and data, normally 1' = 50; 1' = 100; or S' = 200: Response: The scale of the Tentative Plan is 1" = 20'; which is appropriate to the size of the development site and the amount of data needing to be shown. 7 A north arrow and the date the Tentative Plan was prepared Response: A north arrow and date are included on the plans that are included with this application. 4. The name and address ofthe owner, applicant, ddifferent, and the Land Surveyor and/or Engineer who prepared the Padition Tentative Plan. Response: The name and address of the surveyor from EGR and Associates, LLC has prepared the tentative plan and the engineer, Eric Favreau, will prepare the utility plan is noted on the tentative partition plan. 5 A drawing ofthe boundaries ofthe entire area owned by the partiVioner orsub-divider ofwhich the proposed /and division is a pad Response: A thicker, black line is drawn around the subject property to easily show the area owned by the partitioner. 6. G'ty boundaries, the Urban Growth Boundary (UGB) and anyspeclafservire district boundaries or railroad rightrof- way, which cross or abut the proposed land division. Response: No city limit, UGB, or railroad right-of-ways are adjacent to the subject property. 7 Applinable zoning districts and the Metro Plan designation of the proposed land division and ofproperties within 100 feet of the boundary of the subject property. Response: The subject property in an area zoned LDR (Low Density Residential), designated L (low density residential) in the Metro Plan. 8. The dimensions (in feet) and size (either In square feet or acres) ofeach ldtlparcel and the approximate dimensions ofeach building site, where appiinable, and the top and toe of cut and fl// slopes to sca/e. Response: The proposed parcel sizes and dimensions are clearly labeled on the tentative partition plan drawing. 9. The location, outfine to scale and present use ofall existing.snuctums to remain on the property aRerplatting and theirrequiredsetbacks from the proposed new property lines. Response: The existing structures to remain are on the property, including their setbacks, are shown on the tentative partition plan drawing. 10. The location and size ofexisung and proposed utilities and necessary easements and dedications on and adjacent to the site, including but not limited to sanitary sewer mains, stormwater management systems, water mains, power, gas, telephone, and cable TV Indicate the proposed conneiton points. Metro Planning, Inc. April 2021 Page 1 2 Written Statement for Chad Wilson The existing sanitary sewer line, stormwater facilities, and water mains are all shown and labeled on the attached plan. The public sanitary and stone sewer systems as well as water and electricity are located within the B Street right- of-way. Stormwater drainage from each proposed parcel will be piped to an individual drywell located on each parcel as required by the City of Springfield Stormwater Scoping Sheet. 11. The /orations widths andpurpose ofall existing orpmposed easements on and abutting the proposed/and division, the location of any existing or proposed reserve sides. Response: There are not any existing or proposed easements on or abutting the proposed land division. 12. The /ecdAme; of all areas to be dedicated or reserved forpubiic use, with the purpose, condition or/imitations of Me reservations clearly indicated Response: There are no areas being dedicated or reserved for public use; thus this requirement is not applicable. S. A Site Assessment of the Entire Deve/opmentArea. The Site Assessmentshall be prepared byan Oregon Licensed Landscape Architect or Eng/neerand drawn M scale with existing contours at Ifootiniervaisand percentof slope thatprecisely maps and delineates the areas describedbelow Proposed modiflcadons to physical features shall beaeadymoiicated The Dmeacrmay waiveportions of this requirementif there is a finding that the proposed development wi/l nothave an adverse impact on physica/features or water quality, either on the site oradjacent to the site. Information requlred foradjacentproperties maybe generai/zed to show the connections to physical features. A Site Assessmentshell contain the following information. Response: The enclosed tentative partition plan prepared by Ryan Erickson, PLS, an Oregon licensed land surveyor identifies all physical features of the subject property as required. 1. The name, location, dlmensions, direction of flow and top of bank of all watercourses that are shown on the Water Quality Limited Watercourses (WLQW) Map on file in the DevelopmentServices, Department, Response: There are no watercourses shown on the Water Quality Limited Watercourses Map that encumber the subject property; thus this requirement is not applicable. 2. The 100year floodplain and foodway boundaries on the site, as specified in the latest adopted FEMA Flood Insurance Maps or FEMA approved Letter of Amendment or letter of Map Revision, Response: The subject property is located outside of the 500 -year floodplain and floodway boundaries as indicated on FIRM Map Number 41039CI133F dated June 2, 1999; thus this requirement is not applicable. 3. The Time of Travel Zones, as speafiedIn Section 3.3-200 and delineated on the Wellhead Protection Areas Map on file in the Development Service Department, Response: The subject property falls within the 99 year time of travel zone for wellhead protection. 4, Physical features Including, but not limited to significant clusters of bees and shrubs, watercourses shown on the (WL QW) Map and their riparian areas, wet/ands, and rock outc-oppings, Response: There are no clusters of trees and shrubs, watercourses, riparian areas, wetlands, or rock outcroppings within the boundaries of the subject property. S Soil types and water table information as mapped and specified /n the Solis Survey of Lane County, and The Natural Resource conservation Service (NRCS) Web Soil Survey indicates the soil type covering the subject property consists of one -hundred percent (100%) Coburg -Urban land complex (32), with a depth to water table of more than BO inches. 6 Natural resource protection areas as specified In Section 4.3-117. Response: There are no natural resource protection areas present on the subject property; thus this requirement is not applicable. Metro Planning, Inc. April 2021 Page 1 3 Written Statement for Chad Wilson CA Stormwater Management Plan drawn to scale with existing contours at Ifootinterva/s and percent of slope thatpreciselymaps and addresses the information described below In areas wherethe percent ofslope is 10 percent or more contours maybe shown at 5foot Intervals. 7771s plan shall show the stormwater management system for the entre de✓elopmentarea. Unless exemptby the Public Works Director, the Cltyshall require thatan Oregon licensed O'vil Engmeerprepare the plan. Where plants are pmposedas part ofthe stormwatermanagement system, an Oregon Licensed Landscape Architect may also be required The plan shall include the following component 1. Roof drainage patterns and discharge locations,' 2 Pervious and impervious area drainage patterns, - 3 The size and location ofstomiwater managementsystems components, including but not limited to: drain lines, catch basins, dry wells and/or detention ponds, stormwater quality measures, and natural dnunage-ways to be retained,, 4. Existing and proposed site elevations, grades and mmoursr, and 5 A stomhwater management system plan with supporting calculations and documentation as required in 5e tnm 4.3-110 shal/be submitted supporting the proposed system. The plan, calculations and documentation shall be consistent with the engineering Designs Standards and Procedures Manual to a//ow staff to determine if the proposed stormwater management system wl// accomplish its purposes. Response: Stormwater drainage from each proposed parcel will be piped to an individual drywell located on each parcel as required by the City of Springfield Stormwater Scoping Sheet- No outfall to the public stormwater system is proposed with this partition. Further stormwater management plan details may be provided as a condition of approval. D. A Response to Transportation issues complying with the provisions of this Code 1. The locahons, mndltlon, e.g., fully improved with curb, gutterandsidewalk, AC mat orgraval widths and names of all existhg steels, alleys, or other rights-of-way within or adjacent to the proposed land division; The subject site has frontage on B Street which has eighty-fve (85) feet of paving. B Street does not have a curb, gutter or sidewalk and is made of gravel. 2. The locations, widths and names ofall proposed streets and other rights-of-way to include the approximate radius ofcuives andgrades. The relationship of allproposed5treetF to anyprojected steets as shown on the Metro Plan, including the TmnsPlan, any approved Conceptual Development Plan and the latest version of the Conceptual Local street Map, Response: There are no proposed streets or other rights-of-way adjacent to the subject site; thus this requirement is not applicable. 3 The locations and widths of all existing andpmposedsidewallrs, pedestrian trails and accessways, including the /oration, size and type ofpiantings and street trees in any required planterStrip, Response: There are not any existing and proposed sidewalks, pedestrian trails and accessvays. The applicant can sign an irrevocable petition to improve the sidewalk. 4. The location ofevstng and proposed traffic control devices, fire hydrants, powerpoles, transformers, ne/ghborhood mailbox units and s/milarpublic facilities, where applicable, Response: As noted on the Tentative Partition Plan, the nearest fire hydrant is approximately 90 feet West of the Southwest corner of the subject property on the North right of way of B Street. There are power poles on the North side of B street. There are no other public facilities such as traffic control devices, transformers, or neighborhood mailbox units located adjacent or within the development site. 5 The location and dimensions of existing and proposed driveways, where applicable, The driveway to serve future development will take place in the panhandles of the property. The panhandle driveway will be shared and will be installed at the time of site development. All panhandle driveway standards will be met per SDC 3.2-220. Metro Planning, Inc. April 2021 Page 14 Written Statement for Chad Wilson 6 The location ofexisting and proposed streetlighting: including the type, height and area ofillumination, As illustrated on the Tentative Partition Plan, there is an existing street on the SW corner of B and 55a Street. No additional streetlights are proposed. 7 The location ofexisting and proposed transit faa ties, - Response: There are no existing or proposed transit facilities adjacent, or within, the subject property. The nearest transit facility is located near the intersection of Main Street and 59th Street and served by Lane Transit District (LTD) Route 11. 8 A copy of Rightrof-way Approach Permit application where the property has frontage on an Oregon Department of Transportation (ODOT) facility,' and Response: B Street is a city street and not ODOT facility; thus, this requirement is not applicable. 9. A Trafflc Impact Study prepared by a Tiaffic Engineer, where necessary, as specified in Section 42-105A.4. Response: Based on the Institute of Transportation Engineers (ITE) Trip Generation Manual, 7th Edition, single- family detached houses have an average trip generation rate of 9.57 vehicles daily. A single-family dwelling on each of the three parcels proposed generating 9.57 trips per parcel per day results in fewer peak hour or average daily trips necessary for a traffic impact study to be required. E A Future Development Plan. Where phasing and/or lots/parcels that are more than twice the minimum lot parcel size are proposed, the Tentative Plan shall include a Future DevelopmentP/an that Response: No phasing plan is being proposed. F. Additional information and/or applications required at the time of Tentative Plan application submittal shall include the following items, where applicable: 1. A brief narrative explaining the purpose of the proposed land division and the e,istrg use of the property,. Response: This written statement serves as a narrative explaining the purpose of the proposed partition and the existing use of the subject property. 2. If the applicant is not the property owner, written permission fmm the property owner is required,. Response: The attached application form has been signed by the property owner. 3 A Vicinity Map drawn to scale showing bus stops, streets, driveways, pedestrian connections, fire hydrants and other transportatioyflre access issues within 100 feet of the proposed land division and all exisb'ng Panib'ons or Subdivisions immediately adjacent to the proposed land division, Response: A vicinity map is shown on the Tentative Partition Plan sheet. 4. How the Tentative Pian addresses the standards of any applicable overlay district,, Response: Not applicable. 5 How the Tentative Plan addresses Discretionary Use criteria, where applicable, The existing use that will remain on proposed Parcel 1 and Parcel 2 are single-family residential. Single-family residential is a permitted use in the LDR (Low Density Residential) zone; thus no Discretionary Use Permit is required. 6. A Tree Felling Permit as specified in Section 519-100, Metro Planning, Inc. April 2021 Page 15 Written Statement for Chad Wilson No individual trees are shown given that they exist in large clusters. Since more than five trees are proposed to be removed, a tree felling permit is required per SDC 5.19-110 which may be provided as a condition of approval. 7 A Geotechnical Report forslopes of 15percent orgreamrand as specified in Section 33-500, and/ordthe required Site Assessment in Section 51-21208. indicates the proposed development area has unstable soils and/or high water table as specified in the Soils Survey of Lone County,' No development is proposed at this time. Drainage plans will be submitted at building permit for individual lots if development is proposed to be on slopes greater than 15 percent. 8. An Annexation application as specified in Section 57100 where a development is proposed outside of the city limits but within City's urban growth boundary and can be serviced by sanitary sower,- The ewerThe subject property is located within the city limits; thus no annexation application is necessary. 9. A wetland delineation approved by the Department of5tate Lands shall be submitted mncurrently where there is a wetland on the property,' There are no existing wetlands on the subject site; thus this requirement is not applicable. 10. Evidence thatany required Federal or -Stahl permit has been appliedfor orapproved shall be submitted roncumently, No federal or state permits are required with this partition application; thus this requirement is not applicable. 11. All public improvements proposed to be installed and to include the approximate time ofinstallation and method of finanang,• There are no proposed public improvements with this proposed partition application. 12. Proposed deed restrictions and a deft of Homeowner's Association Agreement, where appropriate,' No deed restrictions or Homeowner's Association are proposed; thus this requirement is not applicable. 13 LlusterSubdivisions shall also address the design standards specified m Section 32230, Response: This application is for a tentative partition and not a cluster subdivision. 14. Where the Subdivision of manufactured dwelling park or mobile home park is proposed, the Director may waive certain submittal requirements spec Iliedin Subsections A. through M. However, the Tentative Plan shall address the applicable standards listed under the park Subdivision approval crteria specified in Section 512-125 Response: This application is for a tentative partition and not a subdivision of a manufactured dwelling park. 5.13-130 The Director shall approve or approve with conditions a Tentative Plan application upon determining that all applicable criteria have been satisfied. If conditions cannot be attached to satisfy the approval criteria, the Director shall deny the application. In the case of Partitions that involve the donation of land to a public agency, the Director may waive any approval criteria upon determining the particular criterion can be addressed as part of a future development application. A. The request conforms to the provisions ofthis Cade pertaining to loc parcel size and dimensions. Response: The lot is on an East-West street and falls under those requirements. Lot Size: The minimum Lot Size is 4,500 sq. ft. The smallest lot in the partition is 4,501 sq. ft. and therefore meets this requirement. The minimum lot size in the pan portion of a panhandle lot is 4,500 sq ft. The smallest panhandle lot has 4,813 sq. ft. in the pan. Lot Frontage: The minimum lot frontage is 45 ft and the applicant's street abutting lot has 59 ft of frontage. The minimum frontage for multiple panhandles is 26' and the applicant's two (2) panhandle lots have 13' of street frontage each. Metro Planning, Inc. April 2021 Page 16 Written Statement for Chad Wilson SDC 3.2-215 states that setbacks for primary structures for parcels located on an east -west street in a LDR (Low Density Residential) are as follows: 1) Front/Rear Yard - 10 Feet, 2) Side Yard - 5 Feet. Future development on the parcels of this proposed partition will meet the setback standards of SCD 3.2-215. B. The zoning is consistent with the Metro Plan diagram and/orappliicab/e Refinement Plan diagram, Pian Disoictmap, and Conceptual Development Plan. Response: The zoning of the subject property is Low -Density Residential. In the Metro Plan, this area is designated as Low -Density Residential. The minimum density in the LDR zone is 6 units per acre and the maximum is 14. The proposed development is about 7 units per acre. C Capacity requirements ofpublicandpri✓ate facilities, including but not limited to, water and electricity,, sanitary sewer and stormwitermanagement £ac Ribes,• and streets and traffic safety controls shall not be exceeded, and the public improvements shall be available to serve the site at the time of development, unless otherwise provided for by this Code and otherapplicable regulations The Public Works Director ora utilitypmwdershall detemrine capacity issues. Response: A public sanitary mainline and water mainline are located within the a Street right-of-ways. Dwellings on Parcel 2 and Parcel 3 will be served by a future line/lateral that will connect to the existing line. All future dwellings will be served by on-site stormwater drywells or other on-site methods on each parcel. The capacity of the public and private facilities is able to handle the increase of two future dwellings; thus, this approval criterion will be satisfied. D. The proposed land division shall comply with all applicable public andprwite design and construction standards containedin this Code and other applicable regulations. Response: All the existing public and private facilities meet the design and construction standards of the SDC. There are no public improvements proposed with this partition application. In addition, the future private utilities will be constructed according to all applicable SDC and other regulations. This approval criterion will be satisfied. E Physical features, including, but not limited to: steep slopes with unstable soil orgeologic conditions,areas with susceptibility of flooding, significant clusters of trees and shrubs,' watercourses shown on the WQCW Map and their associated riparian areas, other nparian areas and wetlands specified in Section 4.3-117, rock outcroppings,, open spaces, and areas ofhistoncand/or archaeological significance, as maybe specified in Section 33-900 or ORS 97.740-760, 358905-955 and 390.235-240, shall be protected as specified in this Code or in State or Federal la w. Response: The subject property does not face qualities of steep slopes, susceptibility to Flooding, clusters of trees, watercourses and riparian areas, open spaces, historical significance, etc. This criterion is not applicable. F. Parking areas and ingress -egress points have been designed to: facilitate vehicular traffic, bicycle and pedestrian safety to avoid congestion, protide connectivity within the do velopment ares and to adjacent residential areas, transit stops, neighborhood activity renters and commercial industrial andpublic areas, minimize driveways on arterial and collector streets as specified in this Code or other applicable regulations and comply with the ODOT access management standards for5tate highways. Response: The applicant is proposing three lots that all have a shared driveway in order to mitigate the number of driveways on a Collector street. The proposed parking as well as ingress -egress locations will allow safe vehicular travel that avoids congestion. This approval criterion will be satisfied. G Development of any remainder of the property under the same ownership can be accomplished as specified in this Code. Response: The applicant acknowledges and accepts the terms under this condition. H Adjarent land can be developed oris provided access that whallowits development as specifiedin this Code. Response: All adjacent land is developed; therefore, this criterion is not applicable. Metro Planning, Inc. April 2021 Page 17 written Statement for Chad Wilson I Where the Partition ofproperty that is outside of the city limits but within Me Oty's urbanizable area and no concurrent annexation application is submifted. the standards specified below shall also apply Response: Not applicable. The proposed development is within the city limits; therefore, this criterion does not apply. J Where the Subdivision of manufactured dwelling park ormobile home park is proposed, the following approval critena apply.. Response: This tentative partition is not part of a manufactured dwelling park or mobile home park; therefore, this criterion does not apply. Metro Planning, Inc. April 2021 Page j 8 H10 2( / _ ƒ Rd• .,. )) o.t pw• � » ;z • g / /{ \ mlQM$b _ & .. . ....... ... „:..:.. m m,m, LLJ �z \� - / ƒ } `Ric � \�} �-®— —®—--- -----27, « . y} m: \ W \§{$ \ ®,93m \ k}� � �{2 - •^° ]; w �! ` .. . -- \--- , � ` \ - r- \ n\ZM !! a ! a 6 --=yam=----ƒ----9 ZONE BONEA20XE0 OP OF PEOVE 9] SLOPE PESO W '1FAEICTW H[- ELEVATION 1 1 oFmRIVftVAv of � _ R 1OF IL � � II 11 � .1..LL �— 12 LNIF I."I 1—.. WASHED .,ON FGA� I NPOTOAPPROVED— XI PER PLA FILTER FABRIC SURROUNDING ROOK LAYER 321 SQUARE FEET IN ZONE THE RAIN GARDENS VGLL BE FILLED WITH 12 OFSOIL PI GRA VEGETATION IN THE RAIN GARDENS SHALL BE PLANTED PERSCHEME I OF THE CITY OF EUGENE STORMWATER MANUAL SECTION 2.99. PLANTS TO BE ION CENTER. ESTIMATED PLANT COUNT. ZONEA EDGE E%OBNUPTA 111-4 POTS MASBIA O UA.AH IN T META JDNWSPATENG 110-6 POTS DESCHAMPSNCASESPROBP 6<-i RETS CHAD WILSON PARTITION (PARCEL 1 & DRIVEWAY) INFILTRATION RAIN GARDEN DETAIL NO SCALE (PARCEL 1 & DRIVEWAY) INFILTRATION RAIN GARDEN DETAIL PER PLAN IDNEB ZONEA PER PUN 3'.1 SLOPE OVERFLOW FREEB EVATION _ - \ 11 IN I III II"TOPSOIL 12 THIE. 1-1" P' DISK ROCK iO gppROVEO � _ E BO PER PIAN FII ER FABRIC SURROOKDING ROCK LAYER 232 SQUARE FEET IN ZONE THE GARDEN' MLL BE FILLED HATH 12 OF TOPSOIL( -WAY VIA). VEGETATION IN THE RAIN GARDENS SHALL BE PUNTED PER SOHEME I OF THE CItt OF EUGENE STORMWATER MANUAL SECTION 2.3. F. PLANTS TO BE I' ON CENTER. ESTIMATED PUNT ZONEA BONED CAR Ex ODNUPTA 111-4 1A'POTs SOWMASH 1A -a POTS JUNCUBPATENS 111-4 POTS FESrAAMPSIACAESPITOSA U-a"PCA CHAD WILSON PARTITION (PARCELS 2 & 3) INFILTRATION RAIN GARDEN DETAIL CHAD WILSON PARTITION (PARCELS 2 & 3) INFILTRATION RAIN GARDEN DETAIL SIM FORM: 2014 (Simplified Approach for Stormwater Management) Application Chad Wilson Partition (Lot 1 & Dwy) Building Permit» Address 5524 B St Springfield, OR 97478 Residential ommercial Tarot# 17-02-33-42-00300&00700 (crdsone) NRCS Soil Type or Measured Infiltraiton Rate 0.5"/hr Facility Sizine for Water Quality Flow Control and Flood Control *** Olyfor use in Tvae A&BSoils Surface Facilities Facility Sizing Sizing Factor Total Proposed New or Replaced Impervious Surface Area 4,412 Be. 1 Impervious Area Reduction 0.13 = Permeable Pavements sf sf x 0.11 Eco -Roof sf Sand Filter sf x Contained Planter sf = Sum of Total Tree Credit sf Impervious Area Managed 4 412 Total Impervious Area Reduction > Box 2 El Total Impervious Area Requiring Stormwater Managemment (Box4 must be equal or Box Ie0.1-6cr 2) Facility Sizl ng for Water Ouality Only Overflowto gutter 1weephole) Surface Facilities Impervious Area Managed Sizing Factor Faclity Surface Area Rain Garden 4,412 sf x 0.05 = 221 Stormwater Planter sf x 0.03 = Swale sf x 0.06 = Vegetated Filter Strip sf x 0.2 = Sand Filter sf x 0.03 = Facility Sizing for Water Quality and Flow Control Surface Facilities Impervious Area Managed Sizing Factor Faclity Surface Area Rain Garden sf x 0.11 = Stormwater Planter sf x 0.07 = Sand Filter sf x 0.07 = Facility Sizine for Water Quality Flow Control and Flood Control *** Olyfor use in Tvae A&BSoils Surface Facilities Impervious Area Managed Sizing Factor Faclity Surface Area Rain Garden sf x 0.13 = Stormwater Planter sf x 0.11 = Sand Filter sf x 0.11 = Sum of Total Impervious Area Managed 4 412 Box Point of Discharge (check one) (Box4 must be equal or greater than Box 3) Overflowto gutter 1weephole) Overflow to public storm drain pipe Overflow to Open DrainageMX Subsurface Infiltration ree re rtam Rainwater Haingesting Worksheet So,'Tree Codn" section far more information regarding the use of trees to meet Stormwater Impervious Area Reduction, New Evergreen Trees To receive Impervious Area Reduction Credit, new evergreen trees must be planted within 25 feet of the new or replaced impervious surfaces. No. hums cannot be credited against rooftop areas. Minimum tree height tat the time of planting) to receive credit is 6 feet Enter number of new evergreen trees that meet qualification requirements in Box A I^IBoX A Multiply Box A by 200 a nd enter result in Box 1 JBoxB New Deciduous Trees To receive Impervious Area Reduction Credit, new large deciduous trees must be planted within 2S feet of the new or replaced Impervious surfaces and new small deciduous trees must be plantd within 10 feet of new or replaced impervious surfaces. New trees cannot be credited against rooftop areas. Minimum tree caliper (at the time of planting) to receive credit is 2 inches. Enter number of new deciduous trees that meet qualification requirements In Box C �BoxC Multiply Box C by 100 and enter result in Box D Box 0 Existing Tree Canopy To receive Impervious Area Reduction Credit, existing large tree canopies must be within 25 feet and existing small tree canopies must be within 10 feet of ground -level impervious surfaces (cannot be credit against rooftop surfaces). Existing tree canopy credited towards Impervious Area Reduction must be preserved during and after construction throughout the life of the development. Minimum tree caliper to receive credit is 4 inches. No credit will be given to existing tree canopy located within environmental conservation areas. Enter square footage of existing tree canopy that meet qualification requirements in Box E. P BoxE Multiply Box E by 0.5 and enter result in Box F. Box F I mal vee creaa Add Boxes B, D and F and enter the result in Box G Box C Multiply Box 1 of Form SIM by 0.1 and enter the result in Box H. Bax F El Enter the lesser of Box G and H in Box L (This Is the amount to be entered as 'Tree credit' on farm SIM.) Box I SIM FORM 2014 Instructions 1. Enter square footage (so of total impervious area being developed into BOX 1. 2. Enter square footage (so for impervious area reduction techniques. 3. Enter sum of the impervious area reduction techniques into BOX 2. 4. Subtract BOX 2 from BOX 1 to find BOX 3, the amount of impervious area that requires Stormwater management. S. Select appropriate stormwater management facilities. 6. Enter the square footage of impervious area managed that will flow into each facility type. 7. Multiply each impervious area managed by the corresponding sizing factor. Enter this area as the facility surface area, This is the size of faclity required to manage runoff 9. Where selecting facilities that will overflow, select the point of discharge location. 10. Enter the sum of the total of all the impervious area managed into BOX 4. BOX 4 must be greaer than or equal to BOX 3. SIM FORM: 2014 (Simplified Approach for Stormwater Management) Application Chad Wilson Partition (Lots 2 & 3) Budding Permlttf Address 5524 8 St Springfield, OR 97478 Residential ommercial Taatot# 17-02-33-42-00300&00700 (Circle One) NRCS Soil Type or Measured Infiltraiton Rate 0.5"/hr Total Proposed New or Replaced Impervious Surface Area Impervious Area Reduction Permeable Pavements sf Eco Roof sf Contained Planter sf Tree Credit sf Facility Sizing for Water Quality Flow Control and Flood Control ••• Only for use in Tvae A & B Soils Surface Facilities Impervious Area Managed Sizing Factor Faclity Surface Area Total Impervious Area Reduction sf x 0.13 > Box 2 EdBox Total Impervious Area Requiring Stormwater Managemment Sf x > = Sand Filter sf x (Boz3 Bart) Facility Sizing for Water Quality Only Surface Facilities Impervious Area Managed Sizing Factor Faclity Surface Area Rain Garden 4,412 sf x 0.05 = 222 Stormwater Planter of x 0.03 = Swale sf x 0.06 = Vegetated Filter Strip sf x 0.2 = Sand Filter sf x 0.03 = Facility Sizing for Water Quality and Flow Control Overflow, to Open DrainageMX Surface Facillties Impervious Area Managed Sizing Factor Faclity Surface Area Rain Garden sf x 0.11 = Stormwater Planter sf x 0.07 = Sand Filter sf x 0.07 = Facility Sizing for Water Quality Flow Control and Flood Control ••• Only for use in Tvae A & B Soils Surface Facilities Impervious Area Managed Sizing Factor Faclity Surface Area Rain Garden sf x 0.13 = Stormwater Planter Sf x 0.11 = Sand Filter sf x 0.11 = Sum of Total Impervious Area Managed 4,437 Box Point of Discharge (check one) (Box 4 must be equal or greater than Box 3) Overflow to gutter lweepholel Overflow to public storm drain pipe Overflow, to Open DrainageMX Subsurface Infiltration 14 SIM FO ret Credit and Rainwater Harvesting Worksheet See'Tree Credits'section for more information regarding the use of trees to meet stormwater Impervious Area Reduction, Trees To receive Impervious Area Reduction Credit, new evergreen trees must be planted within 25 feet of the new or replaced impervious surfaces. New trees cannot be credited against rooftop areas. Minimum tree height (at the time of planting) to receive creditis 6 feet ) Enter number of new evergreen trees that meet qualification requirements in Box A I IBox A Multiply Box A by 200 and enter result in Box B I JBox B Nev, Deciduous Trees To receive Impervious Area Reduction Credit, new large deciduous trees must be planted within 25 feet of the new or replaced impervious surfaces and new small deciduous trees must be plantd within 10 feet of new or replaced impervious surfaces. New trees cannot be credited against rooftop areas. Minimum tree caliper (at the time ofplanting) to receive credit is 2 inches. Enter number of new deciduous trees that meet qualification requirements in Box C E] Box Multiply Box C. by 100 and enter result in Bax D Box D Existing Tree Canopy To receive Impervious Area Reduction Credit, existing large tree canopies must be within 25 feet and existing small tree canopies must be within 10 feet of ground -level impervious surfaces (cannot be credit against roof top surfaces). Existing tree canopy credited towards Impervious Area Reduction must be preserved during and after construction throughout the life of the development Minimum tree caliper to receive credit is 6 inches. No credit will he given to existing tree canopy located within environmental conservation areas. Enter square footage of existing tree canopy that meet qualification requirements in Box E. P BoxE Multiply Box E by 0.5 and enter result in Box F. Box F Add Boxes B, D and F and enter the result in Box G Box C Multiply Box 1 of Form SIM by 0.1 and enter the result in Box H. Be.LEI F Enter the lesser of Box G and H in Box I. (Thi: is the amount o be entered as'ares credit' on Form SIMO Box I SIM FORM 2014 Instructions 1. Enter square footage (so of total impervious area being developed into BOX 1. 2. Enter square footage (so for impervious area reduction techniques. 3. Enter sum of the impervious area reduction techniques into BOX 2. 4. Subtract BOX 2 from BOX 1 to find BOX 3, the amount of impervious area that requires stormwater management. 5. Select appropriate stormwater management facilities. 6. Enter the square footage of impervious area managed that will flow into each facility type. 7. Multiply each impervious area managed by the corresponding sizing factor. Enter this area as the facility surface area, This is the size of faclity required to manage runoff 9. Where selecting facilities that will overflow, select the point of discharge location. 10. Enter the sum of the total of all the impervious area managed into BOX 4, BOX 4 must be greaer than or equal to BOX 3. TAX LOTS 17-02-33-42-00300 & 00700, SPRINGFIELD INFILTRATION RATE April 14, 2021 SITE CHARACTERISTICS The site is a vacant lot with mowed grass. NRCS soil classification maps identify this site as having Class C soils. DETERMINATION OF INFILTRATION RATE One test hole was dug onsite in the approximate location of one of the proposed infiltration rain garden. The test hole was dug to approximately 6 feet deep. Ground water was not encountered. The infiltration rate was conservatively determined to be about 1" per hour. For purposes of determining the rain garden size, an infiltration rate of 0.5" per hour was used. FACILITY SIZING An open drainage channel exists on the south side of B Street, eventually connecting to the public drainage system. In addition, an existing drainage channel exists along the west side of Highway 126. Overflow of these facilities will discharge to one of those two locations, pending approval from the City of Springfield. Therefore, the site stormwater facility will only be sized for the water quality event. The attached calculations demonstrate that this facility has been sized to meet the design requirement for the water quality event. ^=-"el ` `� , OREGON '"^'ea"`` --- s 1� 1** EE• 12,2 J t�J. FAV REP EXPIRE& V'f TI