HomeMy WebLinkAboutComments PWE 8/10/2010
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Memorandum
City of Springfield
Date:
To:
From:
Subject:
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Liz Miller, Urban Plarmer
Eric Walter, Civil Engineer
DRC201O-00020, Blackwell Auto Dealer MDS
I have reviewed the materials provided with the subject application. The recommended
[mdings and conditions outlined below are provided for your use in preparing the
land-use decision.
STORMW ATER MANAGEMENT AND QUALITY
Finding: Section 4.3-11 O.B of the SDC requires that the Approval Authority shall grant
development approval only where adequate public and/or private stormwater
management systems provisions have been made as determined by the Public Works
Director, consistent with the Engineering Design Standards and Procedures Manual
(EDSPM).
Finding: Section 4.3-11O.D of the SDC requires that run-off from a development shall be
directed to an approved stormwater management system with sufficient capacity to
accept the discharge.
Finding: As required in Section 4.3-110.E of the SDC, "a development shall be required
to employ drainage management practices approved by the Public Works Director and
consistent with Metro Plan policies and the Engineering Design Standards and
Procedures Manual."
Finding: Section 3.02 of the City's EDSPM states the Public Works Department will
accept, as interim design standards forstormwater quality, water quality facilities
designed pursuant to the policies and procedures of either the City of Portland (BES), or
the Clean Water Services (CWS).
Finding: Section 3.03.3.B of the City's EDSPM states all public and private development
and redevelopment projects shall employ a system of one or more post-developed BMPs
that in combination are designed to achieve at least a 70 percent reduction in the total
suspended solids in the runoff generated by that development.- Section 3.03.4.E of the
manual requires a minimum of 50 percent of the non-building rooftop impervious area on
a site shall be treated for stormwater quality improvement using vegetative methods.
Finding: The vegetation proposed for use in the swales will serve as the primary pollutant
removal mechanism for the stormwater runoff, and will remove suspended solids and
- pollutants through the processes of sedimentation and filtration. Satisfactory pollutant
removal will occur only when the vegetation has been fully established.
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pate ReceIVed;~
Planner: LM
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Finding: The plans submitted indicate a drainage bio-swale area; however plans have not
been submitted with engineer's analysis, engineered plans stamped by a licensed
engineer.
Condition: Prior to approval of the Final Site Plan, the applicant shall submit a storm water
analysis and resulting plan detailing for proposed site development. The plans will need to
include complete engineered details showing stormwater facilities discharging to an
approved system. Plans shall be prepared and stamped by an Oregon Licensed Engineer.
Condition: Prior to approval of the Final Site Plan, the applicant shall submit a storm water
quality analysis and resulting plan detailing for proposed site development. The plan
detailing shall include bio-swale construction details showing compliance with City of
Springfield EDSPM and City of Portland Stormwater Management Manual. Plans shall be
prepared and stamped by an Oregon Licensed Engineer.
Condition: Prior to Final Plat approval, the applicant shall submit a proposed seed mix for
both the private vegetative water quality swale and the public grassy swale/detention pond.
The seed mix shall meet the requirements of the City's interim design standards as required
in Section 3.02 of the EDSPM. The City of Portland stormwater management manual may
be referenced for design.
FEES AND PERMITS
SYSTEMS DEVELOPMENT CHARGE:
Pay applicable Systems Development Charges when building permits are issued for
developments within the City limits or within the Springfield Urban Growth Boundary.
(The cost relates to the amount of increase in impervious surface area, transportation trip
rates, and plumbing fixture units. Some exceptions apply to Springfield Urban Growth
areas.) [Springfield Code Chapter II, Article 11]
Systems Development Charges (SDC's) will apply to the construction of buildings and
site improvements within the subject site. The Charges will be based upon the rates in
effect at the time of permit submittal for buildings or site improvements on each portion
or phase of the development.
SANITARY SEWER IN-LIEU-OF-ASSESSMENT CHARGE:
Pay a Sanitary Sewer In-Lieu-of-Assessment charge in addition to the regular connection
fees if the property or portions of the property being developed have not previously been
assessed or otherwise participated in the cost of a public sanitary sewer. Contact the
Engineering Division to determine if In-Lieu-of-Assessment charge is applicable. lOrd
5584] .
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Date RaceiVed:rtik- .
Planner: LM . . .
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PUBLIC INFRASTRUCTURE FEES:
It is the responsibility of the private developer to fund the puhlic infraStructure.
OTHER CITY PERMITS:
Encroachment Permit or Sewer Hookup Permit (working within rightcof-way or public
easements) example: new tap to the public storm or sanitary sewer, or adjusting a
. manhole. [The current rate is $139.50 for processing plus applicable fees and deposits]
Land & Drainage Alteration Permits (LDAP). [Contact the Springfield Public Works
Department @ 726-5849 for appropriate applications/requirements]
ADDITIONAL PERMITS/APPROVALS MAY BE NECESSARY:
. Metropolitan Wastewater Management Commission (pump station, sanitary
sewers 24 inches or larger)
. Lane County Facilities Permit (lfthe project is within Lane County jurisdiction)
. Railroad (lfthe project crosses a railroad)
. Oregon Department of Transportation (If the project is within ODOT jurisdiction)
. Division of State Lands (Storm water discharge, wetlands)
. Oregon Department of Environmental Quality (Erosion control (5 acres or
greater), pump station, storm water discharge, wetlands)
. U.S. Army Corps of Engineers (Storm water discharge, wetlands)
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Date Recelved:~
Planner: LM