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Home My WebLink AboutPacket, DRC PLANNER 1/5/2023AGENDA DEVELOPMENT REVIEW COMMITTEE DEVELOPMENT SERVICES DEPARTMENT 225 FIFTH STREET Conference Room 616/Zoom Staff Review., Tuesday, January 17, 2023 A'00-9,•30 a.m. 1. Site Plan Review 811-22-000278-TYP2 811-21-000195-PROJ Betty Koehler Assessor's Map: 17-03-33-11 TL: 600 Address: 835 Anderson Lane Existing Use: residential Applicant submitted plans for 3 parcel partition Planner: Andy Limbird Meeting: Tuesday, January 17, 2023 9:00 — 9:30 virtual meeting via Zoom The Complete DRC Packet for this meeting is available online for you to review or print out from the laserfiche website: htto://www.si)ringfield-or.aov/weblink8/browse.asi)x VICINITY MAP 811-22-00078-TYP2 Site Plan Review 17-03-33-11 TL 600 835 Anderson Lane Betty Trotter Koehler City of Springfield Development & Public Works 225 Fifth Street Springfield, OR 97477 Land Division Tentative Pian Partition, Subdivision ISPNIN(pFi� Application Type (Applicant; check one) Partition Tentative Pre -Submittal: ❑ Subdivision Tentative Pre -Submittal: Partition Tentative Submittal:X❑ Subdivision Tentative Submittal: ❑ Required Project Information (Applicant; complete this section) Applicant Name: BETTY KOEHLER lPhone: 541-968-3686 Company: Fax: Address: 4025 CAMELLIA ST, SPRINGFIELD, OR 97478 Applicant's Rep.: MARVIN KRUSH Phone: 541-686-9211 Company: KRUSH AND ASSOCIATES Fax: Address: 115 W 8TH AVE, SUITE 240, EUGENE, OR 97401 Propertil Owner: BETTY KOEHLER Phone: 541-968-3686 Company: Fax; Address: 4025 CAMELLIA ST, SPRINGFIELD, OR 97478 ASSESSOR'S MAP NO: 17-03-33-11 TAX LOT NOS : 600 Property Address: 835 ANDERSON LN, SPRINGFIELD Size of Property: 19,815 Acres ❑ Square Feet 191 Proposed Name of Subdivision: N/A Description of If you are filling in this form by hand, please attach your proposal description to this application. Proposal: CREATE THREE PARCEL PARTITION. RETAIN EXISTING DWELLING ON PARCEL 2 Existing Use: RURAL RESIDENTIAL, SINGLE DWELLING Total acreage of parcels # of Lots/Parcels: 3 allowable densit :19,81 6 min -14 max Proposed # Dwell units 3 Si natures: Please si nand Drint vour name and date in the Required Project Information (City Intake Staff. Associated Applications: ro riate box on the next a e. complete this section) Signs: $11-zz^ooulc4%— Pre -Sub Case No.: �J Ip `'L°6`2u22 Date: Reviewed by: Case No.: '5) f -2fZ-- 0002-779 1 Date: 11)La Reviewed by: Q Application Fee: 6335• 0-0 Technical Fee: 316�i� 1 Postage Fee: 2,03M TOTAL FEES: (o Z 5"f.7S- PROJECT NUMBER:uI`'r%I-� q ' Revised 1/7/14 kl 1 of 10 • SPRINGFIELD DEVELOPMENT AND PUBLIC WORKS 225 FIFTH ST REET s OEEGON SPRINGFIELD, OR 97477 PHONE: 6.375353 FAX: 547.7267261.1027 www sphngbeld-orgov STORMWATER MANAGEMENT SYSTEM SCOPE OF WORK -- (Area below this fine filled oul byApplican0------------- (Please return to Clayton McEachern @ City of Springoeld Development and Public Works, -Far: # 736-1021, Phone # 7364036), email: emeeachern@spring ?eld-or.gov Project Name: Partition 835 Anderson Lane Applicant: Scott Goebel – Goebel Engineering Assessors Parcel #: Map 17-03-33 11 Lot 4600 Date: 1 December 2022 Land Use(s): Residential Phone #: 541-687-0542 Project Size (Acres): 19815 square feet Fax #: Approx. Impervious Area: 9,654 square feet Email: scoff@goebeleng.com Project Description (Include a copy of Assessor's map): Development of existing tract of land with a single dwelling to a three -parcel residential partition. Existing dwelling to remain. Drainage Proposal (Public connection(s), discharge location(s), etc. Attach additional sheet(s) if necessary: On-site runoff to stormwater treatment soakage trench system for each parcel. Existing improvements on Parcel 2 to remain. Public improvements within -right-of-way runoff to public treatment soakage trench located between sidewalk and right-of-way. Proposed StorrawaterBest Management Practices: Stormwater soakage trench ----- — (Area bet" this line filled out by the CiN and Returned theAatdicaml (At a minimum, all bares checked by the City on the front and back ofthis sheet shall be submitted or an application to be complete for submittal, although other requirements mayhe necessary Drainage Study Type (EDSPM Section 4.03.2): (Note. 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: 2 year time oftravel-(Sports Way) ❑ Hillside Development: ❑ Wetland/Riparian: ❑ Floodway/Floodplain: ® Soil Type: 425 -Chapman Urban Land Complex E] 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: cmoeachern@spring(eld-o ,gov, FAX: (541) 736.1021 COMPLETE STUDY ITEMS Fm Official Use ONy: * Based upon the information provided on the front ofolds sheet, the following represents a minimum ofwhat is needed for an application to be complete for submittal with respect to drainage; however, this list should not be used in lieu ofthe Springfield Development Code (SDC) or the City's Engineering Design Manual. Compliance with these requirements does not constitute site approval, Additional site specific information may be required. Note: Upon scoping sheet submia4 ensure completedfaror has been signed in the space provided below: Interim Design Standards[Water Quality (EDSPM Chapter 3 Req'd N/A 7 E] ❑ All non -building rooftop (NBR) impervious surfaces shall be pre-treated (e.g. multi-chambered catchbasin w/oil filtration Calculations showing system capacity for a 2 -year stone event and overflow effects of 25 -year storm event. media) for stormwater quality. Additionally, a minimum of 50%of the NBR impervious surface shall be treated by The time of concentration (Tc) shall be determined using a 10 minute start time for developed basins. teview of Downstream System (EDSPM Section 4.03.4.C) vegetated methods. 0 0 Where required, vegetative stormwater design shall be consistent with design standards (EDSPM Section 3.02), set forth Oregon Plumbing Specialty Code (OPSC). in Chapter 2 ofthe Eugene Stormwater Management Manual. ❑ n For new NBR impervious area less than 15,000 square feet, a simplified design approach may be followed as specified Design of Sturm Systems (EDSPM Section 4.04). by the Eugene Stormwatcr Management Manual (See2.4.1). ❑ lines, slopes, rim elevations, pipe type and sizes clearly indicated on the plan set. Ifa stormwater treatment Swale is proposed, submit calculations/specifications for sizing, velocity, flow, side slopes, ❑ Minimum pipe cover shall be 18 inches for reinforced pipe and 36 inches for plain concrete and plastic pipe materials, or bottom slope, and seed mix consisted with City of Springfield or Eugene's Stormwater Management Manual. proper engineering calculations shall be provided when less. The cover shall be sufficient to support an 80,000 Ib load Water Quality calculations as required in Section 3.03.1 of the EDSPM. ❑ All 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. ❑ 7 A complete drainage study, as required in EDSPM Section 4.03.1, including a hydrological study map. Calculations showing system capacity for a 2 -year stone event and overflow effects of 25 -year storm event. The time of concentration (Tc) shall be determined using a 10 minute start time for developed basins. teview of Downstream System (EDSPM Section 4.03.4.C) ❑ 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. Design of Sturm Systems (EDSPM Section 4.04). QFlow lines, slopes, rim elevations, pipe type and sizes clearly indicated on the plan set. ❑ ❑ 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. E] L] Maraing's'W' values for pipes shall be consistent with Table 4-I 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. )ther/Miseellaneous E] Existing and proposed contours, located at one foot interval. include spot elevations and site grades showing how site drains. ❑ 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 DEQ. Refer to the website: huy://www.dea.state.or.m/wo/uic/uie.htm for more information. F1 ❑ Detention ponds shall be designed to limit mnoff to pre -development rates for the 2 through 25 -year storm events. *This form shall be included as an attachment, inside thefmnt cover, of the stormwererstudy. • IMPORTANT.• ENGINEER PLEASE READ RELOWAND SIGNI As the engineer of record, 1 hereby certify the above required items are complete and included with the submitted story water study and plan set. Signature Scott Goebel, P.E.. P.L.S. Date 14 Dec 2022 Form Version 5: June 2015 0�2. a3mm a � ar �o wK w 0�2. a3mm a �o wK w HWO 3T .VNV7 N03930NV S 0�2. a3mm a