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HomeMy WebLinkAboutComments PWE 2/20/2008 "- l ' . Memorandum City of Springfield SubJect February 20, 2008 Steve Hopkms, Urban Planner Enc WaIter, CIvIl Engmeer SUB2008-00005, R1ver Bend Manor PartItIOn Date To From I have revIewed the matenals proVIded WIth the subject apphcatlOn The recommended findmgs and condItIons outhned below are provIded for your use m prepanng the land-use deCISIOn SANITARY SEWER F/Ild/llg Sec!lon 4 3-105 A of the SDc reqUIres that sanitary sewers shall be mstalled to serve each new development and to connect developments to eXlstmg maillS AddItIOnally, mstallatIon of sanItary sewers shall proVIde suffiCIent access for mamtenance actIVItIes FlIIdlllg The apphcant has proposed connectmg to the eXlstmg 6 mch wastewater lateral located m Deadmond Ferry Road Two new 6 illch waste water hnes WIll connect to thIS Ime and wIll be extended, WIthm a proposed Jomt access and utIhty easement, to serve each of two tax lots Each tax lot mcludes two dwelhng umts so there WIll be an additIOnal 4 mch Ime branclung off and extended from mentIOned 6 mch Ime m order to serve the additIOnal dwellmg urut There WIll be a total of four dwellmg UnIts, two on each tax lot CondItIOn: Pnor to final plat, the apphcant shall obtam approval and necessary plumbmg permIts and construct all pIpe work proposed on the pnvate property area In addItIOn, pnor to final plat, an encroachment permIt WIll be reqUIred for connectmg to the eXlstmg 6 mch waste water lateral located wltlun the publIc nght-of-way and wlthm the 7' pubhc utIhty easement STORMW ATER MANAGEMENT FlIIdlllg SectIOn 4 3-110 B of the SDC reqUIres that the Approval Authonty shall grant development approval only where adequate publIc and/or pnvate storm water management systems proVISIOns have been made as determmed by the Pubhc Works Dlfector, consIstent WIth the Engllleer/llg DeSign Standards and Procedures Manual (EDSPM) FlIIdlllg SectIOn 4 3-1 10 C of the SDC states that a stormwater management system shall accommodate potent131 run-off from ItS entIre upstream dramage area, whether mSlde or outSIde of the development FlIIdlllg SectIOn 4 3-1 10 D of the SDC reqUIres that run-off from a development shall be dIrected to an approved storm water management system WIth suffiCIent capacIty to accept the dIscharge FlIIdlllg SectIOn 4 3-110 E of the SDC reqUIres new developments to employ dramage management practIces, which mmlmlze the amount and rate of surface water run-off mto recelvmg streams, and wluch promote water quahty FlIIdlllg To comply WIth SectIons 4 3-110 D & E, stormwater runoff from the sIte WIll be dIrected mto a proposed water quahty swale located on the east sIde of property pnor to dlschargmg mto the eXlstmg storm water dItch located on the west sIde of property where tlus WIll then discharge to the pubhc system located m Deadmond Ferry Road Tlus dramage ditch dIscharges to a 36" culvert that connects to an eXlstmg 36 mch pubhc storm water pIpe system located m Deadmond Ferry Road FlIIdlllg The sIte utlhty plan (plan sheet C6) does not appear to provide provIsIons for and demonstrate how the roof run off will be dIscharged At t1Ille of development where plans WIll be submItted for future apphcatIons, plans WIll need to be submItted showmg how the new roof dram leaders and how roof dram pIpes will be directed to and dIscharged to an approved storm system acceptable to the CIty ofSpnngfield Pubhc Works Department and BUlldmg Department ConditIOn. Pnor to Fmal Plat approval, the apphcant shall obtam necessary encroachment permIt for all new storm pipe and np rap work located m the eXlstmg pubhc dramage dItch located along the west SIde of property WATER OUALITY FlIIdlllg Under Federal regulatIon of the Clean Water Act (CW A), Endangered SpecIes Act (ESA), and NatIonal Pollutant DIscharge EhmmatIon System (NPDES), the CIty of Spnngfield has obtamed a Muruclpal Separate Storm Sewer System (MS4) permIt A provIsIOn of thIS permIt reqUIres the City demonstrate efforts to reduce the pollutIOn m urban stormwater to the MaxImum Extent PractIcable (MEP) F/Ildlllg Federal and Oregon Department of Envlfonmental Quahty (ODEQ) rules reqUIre the CIty'S MS4 plan address SIX "Mmlmum Control Measures" Mmlmum Control Measure 5, "Post-ConstructIOn Stormwater Management for New Development and Redevelopment," apphes to the proposed development FlIIdlllg Mlrumum Control Measure 5 reqUIres the City of Spnngfield to develop, 1Illplement and enforce a program to ensure the reductIOn of pollutants m stormwater runoff to the MEP The CIty must also develop and Implement strategIes that mclude a combmatIon of structural or non-structural Best Management PractIces (BMPs) appropnated for the commumty FlIIdlllg Mlmmum Control Measure 5 reqUIres the CIty of Spnngfield use an ordmance or other regulatory mechamsm to address post constructIOn runoff from new and re- development projects to the extent allowable under State law Regulatory mecharusms used by the City mclude the Spnngfield Development Code (SDC), the CIty'S Engmeenng DeSIgn Standards and Procedures Manual (EDSPM) and the future Stormwater FacilItIes Master Plan (SFMP) Fllldlllg As reqUired m SectIOn 4 3-110 E of the SDc, "a development shall be reqUired to employ dramage management practIces approved by the Pubhc Works Director and consIstent WIth Metro Plan policies and the Engllleerlllg DeSIgn Standards and Procedures Manual" Fllldlllg SectIOn 3 02 of the CIty'S EDSPM states the Pubhc Works Department wIll accept, as mtenm deSIgn standards for stormwater quahty, water quahty facllltIes deSIgned pursuant to the pohcIes and procedures of eIther the CIty of Portland (BES), or the Clean Water ServIces (cWS) F/Ildlllg SectIOn 3033 B of the CIty's EDSPM states all pubhc and pnvate development and redevelopment projects shall employ a system of one or more post-developed BMPs that m combmatlOn are deSIgned to acrueve at least a 70 percent reductIOn m the total suspended sohds m the runoff generated by that development SectIOn 3 03 4 E of the manual requues a mInImum of 50 percent of the non-bUlldmg rooftop ImpervIOus area on a sIte shall be treated for stormwater quahty Improvement usmg vegetatIve methods F/Ildlllg To meet the reqUirements ofthe CIty'S MS4 permIt, the Spnngfield Development Code, and the CIty's EDSPM, the apphcant has proposed a pnvate water quahty swale located along the east sIde of property An "erosIOn control" seed mIx does not appear to be specIfied for proposed system and the seed mIx and apphcatlOns rates have not been specified FlIIdlllg The vegetatIOn that wIll be proposed (has not been specIfied on plans) for use m the swales wIll serve as the pnmary pollutant removalmechamsm for the stormwater runoff, and wIll remove suspended sohds and pollutants through the processes of sedimentatIOn and filtratIOn SatIsfactory pollutant removal WIll occur only when the vegetatIOn has been fully estabhshed ConditIOn: Pnor to Fmal Plat approval, the apphcant shall subrmt a proposed seed mIx for the water quahty swale The seed rmx shall meet the requuements of the City'S mtenm deSIgn standards as reqUired m SectIOn 302 of the EDSPM The City of Portland storm water management manual may be referenced for deSIgn ConditIOn: To ensure a fully functIOnIng water quahty system and meet objectIves of Sprmgfield's MS4 perrnIt, the Spnngfield Development Code and the EDSPM, the proposed pnvate vegetatIve water quahty swale shall be shall be fully vegetated WIth all vegetatIOn specIes estabhshed pnor to approval of Fmal Plat AlternatIvely, If thIs condItIOn cannot be met, the apphcant shall provide and mamtam addItIonal mtenm erosIOn control/water quahty measures acceptable to the Pubhc Works Department that WIll suffice untll such tIme as the swale vegetatIOn becomes fully estabhshed PUBLIC STREETS. SInEW ALKS & IMPROVEMENT AGREEMENTS F/Ild/llg SectIon 4 2-105 G 2 of the Spnngfield Development Code reqUIres that whenever a proposed land dIVISIOn or development WIll mcrease traffic on the CIty street system and that development has any Ulllmproved street frontage abuttmg a fully Improved street, that street frontage shall be fully Improved to CIty specIficatIOns ExceptIOn (I) notes that m cases of unImproved streets, an Improvement Agreement shall be reqUired as a condItIOn of Development Approval postpomng nnprovements untIl such tIme that a CIty street Improvement project IS mltIated Smce thIS development fronts Deadmond Ferry Road winch IS already fully Improved, tlns code sectIOn has been satIsfied where no further condItIons WIll be necessary for tlns partitIOn FlIIdlllg The proposed development fronts Deadmond Ferry Road winch IS already fully Improved where no street Improvements are bemg proposed or appear necessary There IS one eXIstmg dnveway that IS proposed to be closed and one eXlstmg dnveway proposed for mamtenance access proposed to remain A proposed dnveway to serve thIS development IS bemg shown on plans where a drIveway perrnIt WIll be necessary ConditIOn: Pnor to approval of the Fmal Plat, the apphcant shall obtam approval and all necessary Pubhc Works dnveway curb cut permIts for closmg eXlstmg dnveway and for proposmg and constructmg the new dnveway as shown on plans winch WIll serve as the pnmary access to tlns development UTILITIES. EASEMENTS AND RIGHTS OF WAY FlIIdlllg SectIOn 4 3-130 A of the Spnngfield Development Code reqUires each development area to be proVIded WIth a water system havmg suffiCiently SIzed mams and lesser Imes to furrush adequate supply to the development and suffiCIent access for mamtenance Sprmgfield UtIhty Board coordmates the deSIgn of the water system Wlthm SprIngfield cIty hmlts The current plans do show locatIOns and sIzes of proposed water hnes The BUlldmg Department has made a note that the water Ime should be a mmlmum I" Ime Plans are presently mdlcatmg only a %" Ime FlIIdlllg The sIte plan submItted does not appear to mclude all eXlstmg easements located on the property that mcludes an eXlstmg pubhc mamtenance easement referenced WIth Lane County ReceptIOn No 2004-022213 Smce tins eXlstmg easement covers a large percentage of the lot and where the proposed bUIldmgs WIll encroach mto thIS easement, the proposed development WIth present bUIldmg layouts WIll be m VIOlation WIth code as no structure or structure over-hang IS allowed to encroach mto pubhc easements FlIIdlllg The apphcant has mdlcated an eXlstmg 7 ft pubhc utIhty easements along the frontage of Deadmond Ferry Road whIch satisfies SectIOn 4 3-140 A of the SDC AddItIOnally, a vanable WIdth pubhc dramage easement IS bemg shown on west SIde of property that WIll need to be remam WIth proposed development for the eXlstmg pubhc dramage channel dItch FlIId/llg The apphcant has proposed a new vanable WIdth pnvate storm water dramage easement for the new water quahty swale on the east SIde of property for the benefit of and servmg both parcels I and 2 Also, a new 24 ft WIde Jomt use access and utIhty easement IS bemg shown both satIsfymg the reqUirements for storm and utIhty requIrements of proposed development ConditIOn: Pnor to approval of the Fmal Plat, the apphcant shall make provISIons for, obtam CIty approval, and successfully secure necessary vacatIOns of eXlstmg pubhc mamtenance access easement as needed for proposed development and obtam approval and record a new pubhc mamtenance access easement acceptable to the CIty ofSpnngfield The eXlstmg mamtenance access easement IS referenced as Lane County ReceptIOn No 2004-022213 The CIty of Spnngfie\d must approve a new mamtenance access easement pnor to allowmg vacatmg of the eXlstmg pubhc mamtenance access easement The mlmmum WIdth of the proposed mamtenance access easement shall be \4 ft and shall run adjacent to and the full length of the eXlstmg dramage dItch top of bank located on the west sIde of property ConditIOn: Pnor to approval of the Fmal Plat, the apphcant shall obtain CIty approval through the CIty Surveyor and record necessary documents through Lane County for all pnvate and pubhc easements bemg proposed as shown on plans and as outlmed m fmdmgs above OTHER PERMITS F/Ildmg There does appear to be a portIOn of property located wlthm a FEMA floodplam at the north / west comer of property Condition: Pnor to approval of the Fmal Plat, If It IS deterrnIned that project IS subject to FEMA floodplam reqUIrements, the apphcant shall obtam necessary approval and permIts through the CIty of Sprmgfield Planmng Department where a floodplam permIt may be necessary FEES AND PERMITS SYSTEMS DEVELOPMENT CHARGE Pay apphcable Systems Development Charges when bUlldmg permIts are Issued for developments wlthm the CIty hmlts or wlthm the Sprmgfield Urban Grow1h Boundary (The cost relates to the amount of mcrease m ImpervIOus surface area, transportatIOn tnp rates, and plumbmg fixture unItS Some exceptIons apply to Spnngfield Urban Growth areas) [Spnngfield Code Chapter II, ArtIcle \\] Systems Development Charges (SDC's) WIll apply to the constructIOn ofbUlldmgs and sIte Improvements wlthm the subject site The Charges WIll be based upon the rates m effect at the tIme of permIt submIttal for bUlldmgs or sIte Improvements on each portIOn or phase of the development SANITARY SEWER IN-LIEU-OF-ASSESSMENT CHARGE: Pay a Samtary Sewer In-Lteu-of-Assessment charge m addItIon to the regular connectIOn fees If the property or portIOns of the property bemg developed have not preVIOusly been assessed or otherwIse partICIpated m the cost of a pubhc sanItary sewer Contact the Engmeenng Dlv to determme IfIn-Lleu-of-Assessment charge IS apphcable [Ord 5584] PUBLIC INFRASTRUCTURE FEES. It IS the responslblhty of the pnvate developer to fund the pubhc mfrastructure OTHER CITY PERMITS: Encroachment PermIt or Sewer Hookup PermIt (workIng wltlun nght-of-way or pubhc easements) example new tap to the pubhc storm or sarutary sewer, or adjustIng a manhole [The current rate IS $135 for processmg plus apphcable fees and deposIts] Land & Dramage AlteratIOn PermIts (LDAP) [Contact the Spnngfield Pubhc Works Department@ 726-5849 for appropnate apphcatlOns/reqmrements] ADDITIONAL PERMITS/APPROVALS MAYBE NECESSARY. . Metropohtan Wastewater Management CommIssIOn (Pump statIon, sanitary sewers 24 Inches or larger) . Lane County FaclhtJes PermIt (If the project IS wIthIn Lane County JunsdlCtlOn) o RaIlroad (If the project crosses a raIlroad) . Oregon Department of TransportatIOn (If the project IS wIthIn ODOT JunsdlctlOn) . DIVISIOn of State Lands (Storm water dIscharge, wetlands) o Oregon Department of EnVIronmental Quahty (EroSIOn control (5 acres or greater), pump statIOn, storm water discharge, wetlands) . US Army Corps of EngIneers (Storm water dIscharge, wetlands)