HomeMy WebLinkAboutApplication APPLICANT 9/23/2020City of Springfield
Development & Public Works
225 Fifth Street
Springfield, OR 97477
Minimum Development Standards (Major)
SPRINGFIELD
Required Project Information (Applicant: complete this section)
Applicant Name: Melinda McMillan, AIA, ASIA Phone: 503-892-5352
Company: Ankrom Moisan Architects, Inc. IE -mail: meiindam@ankrommoisan.com
Address: 38 NW Davis, Ste.300, Portland, OR 97209
Applicant's Rep.: Brad Kilby, AICD
Phone: 503-221-1131
Company: HHPR, Inc.
IE -mail: bradk@hhpr.com
Address:205 SE Spokane #200, Portland, OR 97202
Pro ertOwner: Parr Lumber - Dave Frank
Phone: 503-614-2544
Company: Parr Lumber
IE -mail: DavidF@parr.com
Address:5630 NW Century Blvd., Hillsboro, OR 97124
ASSESSOR'S MAP NO: 170335
TAX LOT NOS : 4108900 and 4109200
Property Address: 1291 S. A Street, Springfield, OR 97477
Size of Property: 2 • 61 Acres ❑x Square Feet ❑
Description of If you arefilling in this form by hand, please attach your proposal description to this applkabon.
Pro osal:Proposal to install three new structures on the existing site.
Existing Use: Parr Lumber Yard and Retail
Si natures: Please sign and print your name and date in the appropriate box on the next pace.
Required Property Information (City Intake Staff., complete this section)
Associated Cases:
Case No.:811-20-000172-TYP1
Date: 09/23/2020
Reviewed by: Sm
Application Fee: $ 1218'00
Technical Fee: $ 60.90
Posta a Fee: $0
TOTAL FEES: $
PROJECT NUMBER:
1278.90
Revised 5/21/13 KL 1 of 9
Signatures
The un�de/lr/YylS'.iegn/eeddd kledges that the information in this application is correct and accurate.
Date: 09/03/2020
siglrature
Melinda McMiUlan
Print
If the applicjnt is not the owner, thf,6waer hereby grants permission for the applicant to act in his/her behalf.
Date:
Revised 5/21/13 KL 2 of 9
Minimum Development Standards Application Process
As stated in SDC 5.15-100, the minimum development standards (MDS) process is intended to support
economic development by minimizing City review for minor additions, expansions, or changes in use as
specified in SDC 5.15-100. MDS ensures that such development, however, complies with specific
appearance, transportation, safety and efficiency, and stormwater management standards specified in the
SDC and otherwise protects the public health, safety and welfare.
1. Applicant Submits a Minimum Development Standards Application to the
Development & Public Works Department
The application must conform to the Minimum Development Standards Submittal
Requirements Checklist on pages 4-5 of this application packet.
Planning Division staff screen the submittal at the front counter to determine
whether all required items listed in the Minimum Development Standards Submittal
Requirements Checklist have been submitted.
Applications missing required items will not be accepted for submittal
2. City Staff Conduct Detailed Completeness Check
• Planning Division staff conducts a detailed completeness check within 30 days of
submittal.
• The assigned Planner notifies the applicant in writing regarding the completeness of
the application.
• An application is not be deemed technically complete until all information necessary
to evaluate the proposed development, its impacts, and its compliance with the
provisions of the Springfield Development Code and other applicable codes and
statutes have been provided.
• Incomplete applications, as well as insufficient or unclear data, will delay the
application review process and may result in denial.
3. City Staff Review the Application and Issue a Decision
• This is a Type I decision and thus is made without public notice and without a public
hearing since there are clear and objective approval criteria and/or development
standards that do not require the use of discretion.
• Decisions address all the applicable approval criteria and/or development standards.
• Applications may be approved, approved with conditions, or denied.
• 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 and may not be appealed.
Revised 5/21/13 KL 3 of 9
Minimum Development Standards Submittal Requirements Checklist
NOTE: If you feel an item does not apply, please state the reason why and attach the
explanation to this form.
❑ 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.
❑ Minimum Development Standards Major Application Form
❑ Copy of the Deed
❑ State or Federal Permits Required - The applicant must demonstrate that an
application has been submitted for any required federal or state permit and provide a
copy of the application upon request.
❑ 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. The narrative should also explain justification for proposed MDS
exceptions and should also include other activities proposed on the property such as tree
removal, grading, fill or excavation. A description of the proposed use and explanation of
the uses conducted in building areas and the square footage of each area.
❑ Storm water Scoping Sheet
Four (4) Copies of the following Plan Sheets:
❑ MDS Site Assessment of Existing Conditions meeting the following standards:
❑ The plan shall be drawn by a licensed engineer, architect, landscape architect or land
surveyor.
❑ The plan shall provide the name location and dimensions of all existing site features
including, but not limited to significant stands of trees and watercourses shown on the
Water Quality Limited Watercourse Map and their riparian areas, wetlands, flood
designations and slopes.
❑ MDS Site Plan, prepared by a licensed engineer, architect, landscape architect or
land surveyor, incorporating the following standards:
❑ Proposed Building Envelopes
❑ Dimensions of the Development Area
❑ Where applicable, Location of Existing, Planned or Proposed Transit
Facilities*
❑ Area of all Property to be Reserved, Conveyed or Dedicated.
Revised 5/21/13 KL 4 of 9
❑ A S -Foot Wide Landscape Planter Strip including:
• Property lines, setbacks and dimensioned landscape areas
• Street trees location and type, landscaping and irrigation*
• Fencing
• Percentage of Landscape Coverage
• Planting List*
*Property lines, setbacks and dimensioned landscape areas shall be shown on all
applications; however street trees, fencing and planting information may be noted and
details deferred to Final MDS Plan Approval or Building Permit Submittal.
❑ Trash Receptacle Enclosure and Outdoor Storage Areas including:
• Screening and Cover*
• Connected to sanitary sewer as applicable
• Required Screening for outdoor storage areas*
*Materials and construction types shall be noted and details may be deferred until
Final MDS Approval or Building Permit Submittal.
❑ Bicycle Parking Spaces including:
• Number and location
• Type of bike rack*
*Long term and short term bicycle parking shall be noted and details may be deferred to
Final MDS Approval or Building Permit Submittal.
❑ Parking and circulation areas including:
• Location, dimension number and striping of typical, compact and disabled
parking spaces including aisles
• Wheel stops as required
• On-site loading areas and vehicular and pedestrian circulation
• Storm water management provisions (existing or proposed catch basins, existing
or proposed bioswales)
❑ Access to the Public Right -of -Way including:
• Location and dimensions of existing and proposed curb cuts and any curb cuts to
be closed.
Revised 5/21/13 KL 5 of 9
❑ Concrete Sidewalks including:
• Existing sidewalks
• Proposed sidewalks where development abuts a curb and gutter street
❑ Streetlight Locations
❑ An Improvement and Public Utilities Plan meeting the following standards:
❑ Prepared by a licensed engineer where utility systems are proposed
❑ Location and width of existing and proposed easements
❑ Location and dimensions of all existing and proposed rights of way
❑ Location of existing and proposed utilities and infrastructure on or adjacent
to the subject site including the following as applicable: storm water
management systems, sanitary sewer mains, power, water mains, gas,
telephone and cable connections.
❑ Drainage patterns and connection points with supporting documentation
to demonstrate the proposed system will function consistent with the
City of Springfield Engineering Design Standards and Procedures Manual.
*The applicant may request deferral of plan details demonstrating compliance with standards of
SDC 5.15-120 until Final MDS Plan Submittal, building permit submittal or building permit
Occupancy as noted herein.
Revised 5/21/13 KL 6 of 9
225 FIFTH STREET
SPRINGFIELD, OR 97477
PHONE: 541.726.3753
FAX. 541.736.1021
www.spnngfield-orgov
December 6, 2013
REQUIRED STORMWATER SCOPING SHEET USE POLICY:
In October 2003, Springfield Public Works released a trial "stonnwater 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
U 17 rrrrr 31b4LCeI91 ri7 V,P"IN N:1
1.) 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., Attu: Clayton
McEachem.
4.) Receive completed scoping sheet (filled 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: httv://www.springfield-
or.gov/DPW/EnginmringmdConstructionResources.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: cmeeachem@springfieldor.gov
Phone: (541) 736 —1036
Fax: (541) 736-1021
DEVELOPMENT AND PUBLIC WORKS
SPRINGFIELD
225 FIFTH STREET
OREGON SPRINGFIELD, OR 97477
PHONE: 541.726.3753
FAX: 541.726.1021
www.spdrygfialdor.gov
STORMWATER MANAGEMENT SYSTEM SCOPE OF WORK
----------- — (Area below this b'sefdled out by Applicant) __—
(Please return to Clayton MEachern @ City ofSprtngiiield Development and Public Works, Fan # 736-1021, Phone # 736-1036),
enwd:cnae�lern@sprirtglleldor.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 Assessor's map):
Drainage Proposal (Public connection(s), discharge location(s), etc. Attach additional sheet(s) if necessary:
Proposed Stormwater Best Management Practices:
(Area below this line /'died outby the City andReturned m the Aaabeand
(At a nurumuan, all boxes checked by the City on the front and backoftlus sheet shall be subnutted
or on application to be cotoPletefor subnuttal, afthough other requirements n be recess
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:
❑ Wedand/Riparian:
❑ Soil Type:
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:
❑ Hillside Development:
❑ Floodway/Floodplain:
❑ Other Jurisdictions
Return to Clayton McEachem @ City of Springfield, email: cmceachem@springfeAd-or,gov, FAX., (541) 736-1021
COMPLETE STUDY ITEMS
r Baredupon the tnfor nation provided on tie front ofdds sheet, the follou>ing represents a ndndnnou of uvh w it merkdfor on
application to be complete for subnddal with respect to drainage; however, this list should not be used in lieu ofde Sprirgtield
Development Cork (SDC) or the City's Engineering Design A3mma1. Connpltance with these requirements does not constitute site
appromol, Adebooml site specific information nary be required Note: Upon scoping sheet subndttal, ensure completedfornu has been
signed in the spare provickel below:
Interim Design Standards/Water Quality (EDSPM Chapter 3
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 stonmvater quality. Additionally, aminimum of 50% of the NBR impervious surface shall be treated by
vegetated methods.
❑ ❑ Where required, vegetative stommwater design shall be consistent with design standards (EDSPM Section 3.02), set forth
in Chapter 2 of the Eugene Stormrmer 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 Stomrmvater Management Manual (Sec2A.1).
❑ ❑ If a stormrmer 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 Stomrmvater Management Manual.
❑ 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
be provided with secondary containment or weather resistant enclosure.
❑ n Design of Stoma Systems (EDSPM Section 4.04).
❑ ❑ Flow lines, slopes, rim elevations, pipe type and sizes clearly indicated on the plan set
❑ ❑ Minimum pipe cover shall be 15 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 50,000 lb load
without failure of the pipe structure.
❑ ❑ Manning's "n" values for pipes shall be consistent with Table 4-1 of the EDSP. All stoma pipes shall be designed to
Other/Miscethmeous
❑
Drainage study prepared by a Professional Civil Engineer licensed in the state of Oregon.
Existing and proposed contours, located at one foot interval. Include spot elevations and site grades showing how site
❑
A complete drainage study, as required in EDSPM Section 4.03.1, including a hydrological study map.
drains.
❑
Calculations showing system capacity for a 2 -year stoma event and overflow effects of a 25 -year stoma event
Private stommwater easements shall be clearly depicted on plans when private stommater flows from one property to
The time of concentration (Tc) shall be determined using a 10 minute start time for developed basins.
Review ofDownstream System EDSPM Section 4.03A.0
❑
A downstream drainage analysis as described in EDSPM Section 4.03A.C. 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.
❑ n Design of Stoma Systems (EDSPM Section 4.04).
❑ ❑ Flow lines, slopes, rim elevations, pipe type and sizes clearly indicated on the plan set
❑ ❑ Minimum pipe cover shall be 15 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 50,000 lb load
without failure of the pipe structure.
❑ ❑ Manning's "n" values for pipes shall be consistent with Table 4-1 of the EDSP. All stoma pipes shall be designed to
Other/Miscethmeous
❑
Existing and proposed contours, located at one foot interval. Include spot elevations and site grades showing how site
drains.
❑
Private stommwater easements shall be clearly depicted on plans when private stommater 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 3.03A A). Additional provisions apply to this as required by the DEQ. Refer to
thewebsite: him/Avww.deo.state.or.ushvo/uic/uic.htm for more infomuation.
❑
Detention ponds shall be designed to limit runoff to pre -development rates for the 2 through 25 -year storm events.
*Thisform simU be inchukd m nn Nhuhmen5 inside the frontcover, ofthe stormnsder shady.
* IAWORTANT..- ENGINEER PLEASE READ BEEOWAND SIGN'
As the engineer of record, I hereby certify the above required items are complete and included with the submitted stommater study
and plan set. Signature Date
Form Version 5: June 2015
Parr Springfield Site Improvements
Owner: Parr Lumber
5630 NW Century Boulevard
Hillsboro, OR 97124
Dave Frank
DavidFQparr.com
(503)614-2544
Architect: Ankrom Moisan Architects
38 NW Davis St #300
Portland, OR 97209
Melinda McMillan
melindam@ankrommoisan.com
(503)892-5352
Planner/Engineer: Harper Houf Peterson Righellis, Inc.
205 SE Spokane St, Suite 200
Portland, OR 97202
(503)221-1131
Planner
Brad Kilby, AICP Senior Planner
bradkPa@hhpr.com
Engineer
Kelly Ota, PE
KellyOQhhpr.com
Site Location: 1291 S. A Street
Springfield, OR 97477
Tax Lot: 1703354108900,1703354109200
Parcel Size: 2.61 acres
Zoning: HI (Heavy Industrial)
Summary of Request: The applicant, Parr Lumber, requests approval of a Type I
Minimum Development Standards — Major application to install
three (3) new structures on their site.
Date: September 2, 2020
Vicinity Map
APPLICATION ATTACHMENTS
Attachment #1 — Signed Application Form
Attachment #2 — Property Deed
Attachment #3 — Land Use Narrative
Attachment #4— Engineering Plan Set
Attachment #5 — Architectural Plan Set
Attachment #6 — Stormwater Report
Attachment #7 — Draft O&M Plan
Pan Lum ,SpingflWSl Impovemnts
p.2
MDS- Major NMlten St&emnt
Septemter 2, 2020
AP
Summary of Proposal
Proposal. The applicant, Parr Lumber, is proposing to construct three (3) structures in the southern
portion of their Springfield location. The proposed structures are a storage warehouse and two sheds.
The warehouse is 65'-0" x 100'-0", one shed is 30'-0" x 120'-0", and the second shed is 30'-0" x 160'-0".
As demonstrated through this written statement and the supporting materials, the applicant is requesting
approval of a Type I Minimum Development Standards —Major application.
Background. The subject site is located south of S A Street and currently takes access from a single
accessway on S A Street. It is developed with an existing Parr Lumber retailfwarehouse facility and
lumber yard. The retailfwarehouse facilitywas updated in 2018 which required various site improvements,
such as parking lot and frontage upgrades. This application was also fled as a Minimum Development
Standards —Major application under case file number 811-17-000133-TYP1.
The site is has a zoning designation of Heavy Industrial (HI). The surrounding zoning is as follows:
• North: Low -Density Residential (LDR)
• South: Booth -Kelly Mixed Use (BKMU)IUnion Pacific Railroad right-of-way
• East: Heavy Industrial (HI)
• West: Heavy Industrial (HI)
Responses to Approval Criteria
SDC Chapter 5.15-100 — Minimum Development Standards
SDC 5.15-110 Applicability
A. MDS regulations shall apply as described below.
3. MDS Majorprovisions shall apply only within Commercial, Industrial, High Density Residential,
Medium Density Residential and Public Land and Open Space zoning districts where:
a. The proposed development area is not located within W feet of Low Density Residential zoned
or designated property (as measured from the property line of the subject site and including
public rights-of-way); and
b. The proposed construction, addition w expansion will not exceed 50, 000 square feet of new
impervious and/w combined gross flow area; and
c. Where the proposal will comply with the standards of Section 5.15-120 Subsections A. through
I.
Response: The subject site is located within an industrial zoning district. The proposed
development includes approximately 14,000 SF of new floor area, thereby triggering an MDS —
Major application. It is not located within 50 feet of a Low Density Residential zoned property; the
nearest Low Density Residential Zoned property is approximately 300 feet from the development
area within the site. Finally, as demonstrated through this written statement, the proposed
development complies with the MDS standards of Section 5.15-120 Subsections A. through I.
Pan Lumber— Springfield Site Improvements
p. 3
M[rS—Major N ten Statement
September 2, 2020
AP
4. MDS provisions shall only apply to developed properties located within Springfield's land use
jurisdiction. Development proposals that exceed the size provisions of MDS standards shall require
Site Plan Review as specified in Section 5.17 of this Code.
Response: The subject site is located within the City of Springfield's land use jurisdiction. The
proposed development does not exceed the new gross floor area threshold of 50,000 sf
established in SDC 5.15-110.A.3.b; therefore, the MDS provisions apply to the proposed
development.
SDC 5.15-120 SDC Standards Applicable to MDS Approval
In orderto grant MDS approval, the Director shall determine compliance with all applicable standards
specked below. Subject to review and approval by the Director, the applicant may request deferral of
plan details demonstrating compliance with standards of SDC 5.15-120 until Final MDS Plan Submittal,
building permit submittal or building permit occupancy as noted herein. Final approvals and/or occupancy
is contingent upon the completion of all required site improvements. Application materials shall be
submitted as required on application submittal checklists and in sufficient detail to demonstrate
compliance with the following standards:
A. A 5-foot wide landscaped planter strip, including street trees, with approved irrigation or approved
drought resistant plants as specified in Sections 4.4-100 and 4.2-140 shall be installed between the
sidewalk and parking areas or buildings. `
`Property lines, setbacks and dimensioned landscape areas shall be shown on all applications however
street trees, fencing and planting information may be noted and details deferred to Final MDS Plan
Approval or Building Perm# Submittal.
Response: A landscaped planter strip has been previously installed between the sidewalk and
parking area and building. This landscaped planner strip varies in width, but its narrowest point is
approximately 7'0". This area is not affected by this request, as all improvements are internal to
the site. This standard is satisfied.
B. Trash receptacles shall be screened, covered and connected to the sanitary system in accordance
with the Engineering Design Standards Manual as applicable. All outdoor storage areas shall be
screened by a structure or enclosure permanently affixed to the ground as specked in Section 4.4-110. `
`Property lines, setbacks, and the location of covers and screens shall be shown on all applications
however materials and construction types may be noted and details deferred to Final MDS Plan Approval
or Building Permit Submittal.
Response: The site uses one trash enclosure to the rear of the existing building that was installed
as part of the prior land use application, 881-17-000133-TYP1. As demonstrated below, the
existing trash enclosure complies with the applicable development standards established in SDC
4.4-100.
SDC 4.4-110 Screening
A. Unless otherwise specifed in this Code, screening shall be required.
4. For trash receptacles,
B. Screening shall be vegetative, earthen and/or structural and be designed to minimize visual and
audible incompatible uses fmm adjacent properties. Unless specked elsewhere in this Subsection,
Pan Lumber—Spingfieltl Safe Improvemrfs p.4
MOS—Major Written Statemnt \Ap\JJy September2,2020
V
screening shall be continuous to at least 6 feet above ground level. The following standards shall
apply
3. Structural Screening. A fence or masonry wall shall be constructed to provide a uniform sight-
obscuring screen.
Response: The trash receptacles are located within an existing trash enclosure to the rear of the
existing building. The enclosure entirely conceals the waste receptacles so that they are not
visible from the publicly-accessible portions of the site. Further, it is developed with a floor drain
that connects to the sanitary sewer system in conformance with the Engineering Design
Standards Manual.
C. Bicycle parking spaces shall be addedto meet the numerical standards forthe appropriate use or
upgraded to meet the standards specked in Sections 4.6-140, 4.6-145 and 4.6-155.'
`Longterm and short-term bicycle parking areas may be noted on all applications however, details may
be deferred to Final MDS Plan Approval or Building Permit Submittal.
Response: The site was developed with both long- and short-term bicycle parking as part of the
prior land use application, 881-17-000133-TYP1. As demonstrated below, the existing bicycle
parking complies with the applicable development standards established in SDC 4.6-140, 4.6-145,
and 4.6-155.
SDC 4.6-140 Bicycle Parkin — Purpose and Applicability
A. Safe and convenient bicycle parking is required in most zoning districts and land use categories to
encourage the use of bicycles as a mode of transportation. The required number of spaces is lower
for uses that do not tenni to attract bicycle riders and higher for those that do. Additionally, some
bicycle parking is required on the basis of specifically enouraging employee, student or customer
related bicycle use. The following standards ensure that bicycle parking is convenient to the cyclist in
its location and provides sufficient security from theft and damage. Long-term bicycle parking space
requirements accommodate employees, commuters, students, residents and otherpersons who
expect to leave their bicycles for more than 2 hours. Short-term bicycle parking spaces accommodate
visitors, customers, messengers, and other persons expected to depart within approximately 2 hours.
B. Unless exempted elsewhere in this Code, all development shall comply with the bicycle parking
provisions of this Section.
Response: The purpose of SDC 4.6-140 is acknowledged and understood by the applicant. As
discussed elsewhere in this written statement, bicycle parking was installed on the site with the
prior land use application in order to encourage the use of bicycles as a mode of transportation.
The proposed additions are not expected to generate any additional traffic to the site.
SDC 4.6-145 Bicycle Parkin — Facility Design
A. The required minimum number of bicycle parking spaces for each principal use is 3 spaces.
Specific requirements per use are given in Section 4.6-155. Additional bicycle parking spaces may be
required at common use areas. Fractional numbers of spaces shall be rounded up to the next whole
space.
Pan Lumber—Springfield Safe Improvemrfs p.5
MOS—Major Written Statemnt September 2, 2020
AP
Response: As demonstrated in the response to SDC 4.6-155, three (3) bicycle parking spaces are
required for the site. The site is currently developed with two (2) short-term spaces and one (1)
long-term space.
B. Each bicycle parking space shall be at least 2 by 6 feet with an overhead clearance of 7 feet, and
with a 5 -foot access aisle beside or between each row of bicycle parking, and between parked
bicycles and a wall or structure (the dimensions for commonly used bicycle racks are shown in Figure
4.6-B.). Bicycles may be tipped vertically for storage but not hung above the floor. Bicycle parking
shall be provided at ground level unless an elevator is easily accessible to an approved bicycle
storage area. Each required bicycle parking space shall be accessible without removing another
bicycle.
Response: The existing spaces were previously reviewed and approved by the City. Each bicycle
parking space is situated so as to have 2 by 6 feet of clearance. The short-term bicycle parking
spaces are located outside of the building and therefore have no overhead clearance constraints.
The spaces are ground -mounted and do not require vertical storage, and they are accessible
without removing another bicycle. This standard is satisfied.
C. All required long-term bicycle parking spaces shall be sheltered from precipitation. Short-term
bicycle parking is not required to be sheltered.
Response: The long-term bicycle parking space is located interior to the building and is therefore
sheltered from precipitation. The short-term bicycle parking is located outside between the
building entrance and the parking area. This standard is satisfied.
D. Direct access from bicycle parking spaces to the public right-of-way shall be provided with access
ramps, if necessary, and pedestrian access from the bicycle parking areas to the building entrance.
Response: The bicycle parking areas are located on the pedestrian facility between the parking
area and the building entrance, which then connects directly to the public sidewalk along the front
of the site. This standard is satisfied.
SDC 4.6-155 Bicycle Parking — Number of Spaces Required
The following parking standards have been established according to land use.
Land Use
Minimum Parking Requirements
Type and % of Bike Parking
MOS— Major NMlten Statement
(Minimum 3 spacesrequired)
September 2, 2626
Commercial Uses
Furniture and home
1 per 6, 000 square feet of floor area
25% long term
furnishing stores,
75% short term
hardwarehome
improvements stores,
including building material
and supplies
Warehouse commercial
1 per 6,000 square feet of floorama
25% longterm
sales, regional distribution
75% short term
center
Excerpt oiapplkable mWm&. rrom Tale 4.6J
Response: The site is currently developed with three (3) bicycle parking spaces, two (2) of which
are short term and one (1) of which is long term. The existing building is approximately 4,120 sf or
retail space and 10,465 sf of warehouse space, totaling 14,585 sf of floor area. Implementing the
Pan Lumber— Springfield Site Impovemerits
P. 6
MOS— Major NMlten Statement
September 2, 2626
AP
standards established in Table 4.6-3, three (3) bicycle parking spaces are required: (4,120 sit +
10,465 sit = 14,585 sf/6,000 sf/parking space = 2.4 bicycle parking spaces). This standard is
satisfied.
D. Parking and circulation areas shall be provided. Paving, striping and wheel stops shall be installed as
specified in Sections 4.6-100 and 4.6-120. Required paving and other impervious surfaces on the site
shall comply with on-slte stormwater management standards as specified in Section 4.3-110.
Response: Parking and circulation areas are already existing or being modified and improved with
this proposed development. None of the previously approved parking is being displaced with the
proposed storage additions. A stormwater report and plan are included with this submittal to
ensure that stormwater is captured, treated, and conveyed to an approved system as required by
the state. Please see sheets 3-5 of the Engineering Plan Set along with attachments 006, the
stormwater report for specific details.
SDC 4.6-110 Vehicle Parking— General
A. Off-street parking spaces shall be provided for.
1. All new construction and expansion of multiple family residential, commercial, industrial and
public and semi-public uses. If an existing development is expanded, new parking spaces shall
be provided in proportion to the increase only.
Response: Noted. This application would add three structures to the existing site for storage and
preparation of the wood products sold on site. It would not necessarily increase the number of
visitors to the site and they are not open to the general public. Therefore, the applicant is not
proposing to increase the off-street parking beyond what was previously approved for the site.
2. Changes in use or the use category of an existing building or structure.
Response: This application does not include a change of use. The additional storage buildings are
ancillary to the primary use of the site which is a commercial lumber yard.
3. The Director may authorize a reduction in the number of required parking spaces without a
Variance:
Response: No reduction in the number of required parking spaces is required.
B. If parking has been provided to serve an existing use, the number of parking spaces shall not be
reduced if the result would be fewer spaces than required by this Section.
Response: The proposed improvements do not reduce the amount of parking provided on-site
and previously approved for the site.
C. Required parking spaces shall be available for the parking of passenger automobiles of residents,
customers, patrons, and employees only, and shall not be used for storage of vehicles or materials.
Parking for company motor vehicles that remain on the premises overnight shall be provided in
addition to the number of parking spaces required by this Section.
Response: The parking spaces are for Parr Lumber customers and employees. They are not used
for the storage of vehicles or materials.
Part Lumber— Spnngfield Site Impmvemerds
p.
MDS — Major Witten Statement
September 2, 2020
AP
D. Unlessjoint use of parking facilities is requested as maybe permitted in Subsection E., below, the
total requirement for of(-street parking spaces is the sum of the requirements for all uses. If the total
number of required parking spaces results in a fraction, the fraction shall be rounded up to the next
whole number. Of(-street parking facilities for 1 use shall not be considered as providing parking
facilities for any other use, unless as may be permitted in Subsection F., below.
Response: The site's combined uses of retail and warehouse sales were utilized to determine the
overall parking requirement, as demonstrated in the response to SDC 4.6-125.
E. The Director, upon application by all involved property owners, may authorize pint use of parking
facilities, provided that.
Response: The site does not utilize joint use of parking facilities; this set of standards does not
apply.
F. Parking spaces in a public right-of-way directly abutting the development area may be counted as
fulfilling a part of the parking requirements for a development as follows: For each 18 feet of available
on-street parking, there will be 1/2 space credit toward the required amount of of(-street parking
spaces. The developer is responsible for marking any on-street spaces.
Response: The site is not relying on parking spaces located within the public right-of-way to fulfill
the parking requirements.
SDC 4.6-115 Vehicle Parking— Parking Lot Design
Response: All of the on-site parking stalls are existing and were developed as standard 90-degree
stalls. Table 4.6-1 requires that these stalls are all 9'0" wide, 18'0" long, and have a drive aisle that
is 24'0" wide. The existing stalls are all 9'0" wide, 18'0" long, and the drive aisles are 24'0". This
standard is satisfied.
SDC 4.6-120 Vehicle Parking— Parking Lot Improvements
All parking areas shall conform to the setback, vision clearance, planting and screening provisions of
this Code and shall be completed prior to occupancy. Required parking spaces shall be improved as
follows.
A. All parking areas shall have a durable, dust free surfacing of Asphaltic concrete, Portland
cement concrete or other materials as specified in the Building Safety Codes and approved by
the Building Oficial. Parking lot surfacing shall not encroach upon the public right-of-way.
Response: The parking area is paved with asphalt and was previously approved for the site. This
standard is satisfied.
B. Adequate drainage improvements shall be provided to dispose of all on-site run-off Provisions
shall be made forthe on-site collection of drainage waters to eliminate sheet flaw onto sidewalks,
public rights-of-way, and abutting private property. All drainage systems shall be approved by the
Building Official and shall be constructed in conformance with the Building Safety Codes.
Response: As proposed, the site stormwater plan has been amended to account for the additional
site improvements and additional impervious areas. The specifics of the proposed storm facilities
are shown on the civil plan set and discussed in detail in attachment 6, the stormwater report.
That report was prepared by a professional and licensed civil engineer.
Pan Lumber— Spingfield Site Impovemerits p. 8
MOS —Major MMIten Statemrx September 2, 2020
41lHP
C. All parking stalls fronting a sidewalk, alley, street, landscaped area or structure shall be
provided with a secured wheel bumper or linear curb not less than 6 inches in height to be set
back from the front of the stall a minimum of 2 feet to allow for vehicle encroachment. Wheel
bumpers shall be a minimum of 6 feet in length. Curbs shall be constructed in conformance with
the Standard Construction Specifications.
Response: The on-site parking is existing. None of the existing parking stalls abut a sidewalk,
alley, street, or landscaped area. The parking stalls along the western property line abut the
adjacent property's fence, and a curb is provided along these parking stalls to prohibit vehicle
encroachment. This standard is satisfied.
D. Backing into the public fight -of -way, other than alleys is prohibited.
Response: The existing parking area provides circulation so that no vehicles are required to back
into the public right-of-way; they can exit and enter the parking area in a forward motion. This
standard is satisfied.
E. All spaces shall be permanently and clearly marked unless the Director determines that the
spaces should not be marked for safety considerations. Old striping shall not be visible after
being replaced by new striping.
Response: The spaces are clearly marked, and no new spaces are proposed with this application.
This standard is satisfied.
F. Parking areas shall be designed to connect with parking areas on abutting sites within the
same zoning district to eliminate the use of the street for cross movements.
Response: The parking and circulation on the site is not affected by the proposed improvements.
The existing parking areas were previously approved by the City and are not affected by this
proposal.
G. Not more than 30 percent of the total parking spaces in a parking lot may be designated for
compact cars. These spaces shall be signed andror the space painted with the words "Compact
Car Only."
Response: There are no spaces in the parking area designated for compact cars.
H. Parking Spaces For Disabled Persons.
1. Parking spaces for disabled persons and accessible passenger loading zones that serve a
particular building shall be located as close as possible to a building entrance.
2. The number and dimensions of parking spaces for disabled persons shall be as specified
in Section 1104 of the Structural Specialty Code.
Response: There are two existing ADA stalls located on site. Those spaces meet Section 1104 of
the Structural Specialty Code and are not affected by the proposed improvements.
1. Motor Vehicle Parking Space Reduction Credit. Bicycle parking may substitute for up to 25
percent of required vehicular parking. For every 5 non -required bicycle parking spaces that meet
the short or long term bicycle parking standards specified in Table 4.6-3, the motor vehicle
requirement is reduced by 1 space. Existing parking may be converted to take advantage of this
provision.
Pan Lumber— Springfield Site Improvements p. 9
MDS — Major Written Statement September 2, 2020
HP
Response: The applicant is not seeking a reduction in the required amount of parking. Parking is
existing and was approved with the previous site development. Existing parking is not affected by
the proposed improvements.
SDC 4.6-125 Vehicle Parking— Parking Space Requirements
The following parking standards have been established according to use and apply to that use in
any zoning district.
Use
Minimum Parking
Re uiremenGs
Square Footage
Required Parking
Retail sales, personal service,
1 for each 300
4,120 sf
14 spaces
including small scale repair
square feet of
and maintenance and offices
gross flow area
Warehouse commercial sales
1 for each 600
10,465 sr
18 spaces
square feet of
gross flow area
Excerpt ofappffcaWe Irrw bnfmm Table 46-2
Response: As demonstrated above, the uses of the site require a total of 32 parking stalls. The
site is currently developed with 34 parking stalls, two of which are ADA -compliant. This standard
is satisfied.
E. Access from the proposed development area to the public right-of-way shall comply with Section 4.2-
120.
1. Where the proposed development area abuts an improved street, any non -conforming or unsafe
driveways, as determined by the Public Works Director, shall be removed and replaced with curb,
gutter and sidewalk.
2. Where the proposed development area abuts an unimproved street, any non -conforming or unsafe
access points, as determined by the Public Works Director, shall be:
a. Removed by the use of fencing, extruded curbs or other method of approved barricade; and
b. The property owner shall sign an Improvement Agreement guaranteeing future participation in
a Local Improvement District.
3. If an existing driveway or access point is closed, the Director may approve a joint use access
agreement with a neighboring property as specifed in Section 4.2-120.
Response: The proposed improvements would add three buildings to the site for storage and
processing of wood products sold on-site. Street improvements and access were previously
approved and constructed. The proposed improvements do not affect the existing access. These
criteria are not applicable to the proposed development.
F. Concrete sidewalks shall be installed where the proposed development area abuts a curb and gutter
street as specifed in Section 4.2-135.
Response: Noted, as indicated previously, sidewalks were constructed with the previously
approved site development and are not affected by the proposed improvements. This criterion is
not applicable to the proposed development.
Pam Lumber— SpiWfield Site Impmvemends
P. 10
MOS— Major NMlten Statemnt
September 2, 2020
AP
G. Streetlights required to serve the development area shall be installed as specked in Section 4.2-145.
Response: Streetlights were previously installed with the prior improvements and are not
impacted by the proposed development. This criterion is not applicable to the proposed
development.
H. The development area shall conned to public utilities as specified in Sections 4.3-105, 4.3-110, 4.3-
120, 4.3-125 and 4.3-130 and comply with the Springfield Building Safety Codes, where applicable.
Easements may be required as specked in Subsection 4.3-140.
Response: The site is already connected to public utilities as required. No new public utilities are
proposed with the addition of the buildings subject to this request.
1. MDS Major Approval pursuer# to Section 5.15-110, Subsection A.3 shall also meet the following
submittal standards in addition to Subsections A. through H.
1. The applicant shall prepare an MDS Site Assessment of Existing Conditions meeting the following
standards:
a. The plan shall be drawn by a licensed engineer, architect, landscape architect, or land
surveyor.
b. The plan shall provide the name, location and dimensions of all existing site features including,
but not limited to, significant stands of trees, watercourses shown on the Water Quality Limited
Watercourse Map and their riparian areas, wetlands, flood designations and slopes.
Response: An Existing Conditions Plan prepared by a professional and licensed civil engineer are
attached to this submittal as part of the civil plan set. Please see sheets 2 and 3 of the civil plan
set.
2. The applicant shall provide an MDS Site Plan meeting the following standards:
a. Prepared by a licensed engineer, architect, landscape architect, or land surveyor.
b. Proposed building envelopes.
c. Location and dimension of proposed landscape areas including percentage of landscaped
coverage.
d. Required screening`.
e. Required street tree location and types.
f. Planting list`.
g. Dimensions of the Development Area.
h. Where applicable, location of existing planned or proposed trent facilities`.
i. Area of all property to be reserved, conveyed or dedicated.
Response: A site plan prepared by a licensed and professional civil engineer is attached to this
application as sheet 3 of the civil plan set.
Pan Lumber—Spingtwkl Safe Improvemrfs
P. if
MOS—Major MMlten Statemnt
September 2, 2020
AP
3. The applicant shall submit an Improvement and Public Utilities Plan meeting the following
standards:
a. Prepared by a licensed engineer where utility systems are proposed.
b. Location and width of proposed easements.
c. Location and dimensions of all existing and proposed rights-of-way.
d. Location of existing of proposed utilities and infrastructure on or adjacent to the subject site
including the following as applicable: stormwater management systems, sanitary sewer mains,
power, water mains, gas, telephone and cable connections.
e. Drainage patterns and connection points with supporting documentation to demonstrate the
proposed system will function consistent with the City of Springfield Engineering Design
Standards and Procedures Manual.
Response: This submittal includes a site plan along with proposed utility extensions which are
expected to be limited to stormwater, water for fire service, and franchise utilities for power.
Those utilities are shown on sheets 3 and 4 of the attached civil plan set, detailed on sheet 5 (for
stormwater), and discussed in the attached stormwater report.
Conclusion
The proposed development includes the information required to be submitted for a Minimum
Development Standards -Major type I land use review. As proposed, the development will comply with the
applicable City of Springfield development standards. Therefore, the applicant respectfully requests that
the City approve the application as submitted.
Pan Lumber—SpingfieWSafe Impovemrts
p. 12
MDS— Major Written Statemnt
Septemtwr 2, 2020
AP
O&M Plan
Parr Lumber -Phan 2
Stormwater Operations and Maintenance Plan
Parr Lumber — Phase 2
September 1, 2020
Prepared by: Kelly Ota, P. E.
Harper Houf Peterson Righellis Inc.
205 SE Spokane Street
Portland, OR 97202
Responsibility
These facilities are to be maintained by the Owner. The system can easily be maintained by maintenance
staff, and this maintenance plan can be used as a reference for that work.
Property Legal Description:
Township 17 South Range 3 West, Section 35, SE Y, NE Y, Taxlot 9200
Description
Stormwater management for the redeveloped southern portion of this site is met using infiltration rain
gardens. The released flows from these facilities are collected on-site and directed to an existing private
site storm line. This private storm line flows to a public storm line, which exists on site through an
easement to the city.
Infiltration rain gardens are landscaped basins used to infiltrate, detain, and filter stormwater runoff,
allowing pollutants to settle and filter out as stonnwater infiltrates into the soil. Higher flows will overflow
the rain garden and flow into the piped system.
Notice of Operations and Maintenance Agreement
Private Stormwater Management and Treatment System
The undersigned owner(s), is hereby given notice that stormwater runoff from the "Property' described below
requires stormwater management facilities to be located, designed, and constructed in compliance with the City
of Springfield's Engineering Design and Procedures Manual. Said facilities shall be operated and maintained
in accordance with the Operations and Maintenance Agreement (O&M Agreement) on file with the City of
Springfield, Development and Public Works Department.
Parr Lumber (Property Owner/Developer)
acknowledges and agrees to maintain private stonnwater treatment facilities listed in this document. The
maintenance of the stomnwater facilities listed in this document is required as part of the Development
Agreement with the City of Springfield. This facility will be operated and maintained in accordance with the
requirements stated in this document and in the latest edition of the City of Springfield Engineering Design
Standards and Procedures Manual, Chapter 3. The City reserves the right to enter and inspect any stow nwater
facility located on the "Property' to ensure the facilities are operating as designed. Failure of the responsible
party to inspect and maintain the facilities can result in an adverse impact to the public stomnwater system and
the quality of receiving waters.
The requirement to operate and maintain the stonnwater treatment facilities in accordance with the approved
site development agreement and the site O&M Agreement is binding on all current and future owners of the
property. The Agreement and its O&M Plan may be modified under written consent of new owners with
written approval by and re -filing with the City. The O&M Agreement and O&M Plan for facilities constructed
pursuant to this notice are available at the Development and Public Works Department, 225 Fifth St, Springfield
Oregon, or call (541)-736-3753, between the hours of S a.m. and 5 IT m., Monday through Friday.
The Subject premises, is legally described as follows: (Tax lot minter cannot be usedto describe the property. Legal
rkscriphons may be obtatredfronn the conolly assessor's office).
SEE EXHIBIT "A"
ATTACHED HERETO AND INCORPORATED HEREIN BY REFERENCE
By signing below, the signer accepts and agrees to the terms and conditions contained in the Operations and
Maintenance Plan and in any documents attached. This instrument is intended to be binding upon the parties
hereto, their heirs, successors, and assigns.
In Witness whereof, the undersigned has executed this instrument on this day of
20
Owner(s):
Signature
Print Name
STATE OF OREGON, County of Lane,
❑ Thus instrnment as acknowledged beforeme on
by , owner(s) of the above
described premises.
❑ Thus instrnment as acknowledged beforeme on
by
as
of
Notary Public for Oregon
RETURN TO: CITYOF SPRINGFIELD
DEVELOPMENT &PUBLIC WORKS DEPT.
225 FIFTH ST.
SPRINGFIELD, OREGON 97477
owner(s) of the above described
My Commission Expires
RESERVE THIS SPACE
FOR RECORDING STICKER
"Avoid $20 nonstanda orc (font too small)...
Print this form on Legal size paper."
Appendix 3A-1 RevontTltD Page 1 of 1 EDSP Adopted December 03, 2012
Operations and Maintenance Agreement
Private Stormwater Management and Treatment System
Land Development Application Number:
Owner's Name: Parr Lumber (Brad Fanner)
Phone No.: 503-614-2539
Mailing Address: 5630 NW Five Oaks Drive
Site
Site Map and Tax lot No.: 1703354109200
(Or ottmh dxmnerR with od*8orml lot irfornv lon ifthe fmility crosses mm thmi ore lot)
Type of Facility(ies) Rain Gardens
Requirements
1) Stormwater Management Site Plan, (min. S 1/2" x 11" attached to this form) showing the location of
the facility(ies) in relation to building structures or other permanent monuments on the site, sources of
nmoff entering the facility(ies), and where stormwater will be discharged to after leaving the
facility(ies). Landscape and vegetation should be clear on the Plan submitted or submit a separate
Landscape Plan document showing vegetation type, location, and quantity (landscape plan). These
can be the same Plans submitted for development review.
The storrawater management facility(ies) shown on the Site Plan are arequired condition of
development approval for the identified property. The owner of the identified property is required to
operate and maintain the facility(ies) in accordance with the Facility specific Operation and
Maintenance Plan(s) (O&M Plan(s)) attached to this form and on file with the City. The O&M Plan
for the fa.cility(ies) will be available at the Development and Public Works Department, 225 56 Street,
Springfield, Oregon between the hours of S a.m. and 5 p.m., Monday through Friday.
2) Financiallyresponsible party (circle one):
Property Owner Homeowner Association Other (describe)
3) Party(ies) responsible for maintenance (only if other than owner).
Daytime phone no.(_)_
Emergency/after-hours contact phone no ( )
Maintenance Contact Party(ies) Name & Business Address:
4) Maintenance practices and schedule for the stormwater facility(ies) are included in the Facility
Specific O&M Plan(s) attached to this form and filed with the Development and Public Works
Department, City of Springfield. The operation and maintenance practices are based on the version of
the City of Eugene's Stormwater Management Manual in effect at the date of development
application, as modified by any plans attached to this document at the time of signing.
Application Date:
By signing below, Filer accepts and agrees to the terms and conditions contained in the Operations and
Maintenance Plan(s) and in any document executed by Filer and recorded with it.
Filer Signature:
Print Name:
Appendix 3A-2 aerorrz&ra Page 1 of 1 EDSP Adopted December 03, 2012
EXISTING COLLECTION 1
POINT FOR BASIN P1
(ROADWAY GUTTER)
EXISTING COLLECTION �I
POINT FOR BASIN P2
(ASSUMED CONNECTION TO
PUBLIC 24" WOOD STORM)
EXISTING
CATCH BASIN
EXISTING
COLLECTION
POINT FOR C
,( BASINS P3 -P10
i (ASSUMED
ROUTING TO
91 PUBLIC 24"
CI WOOD STORM)
1
Y
i
67+00
'IN
BASIN
PZ PHAL
BASIN
68+00 69+00
-70+00
i
126_RLc— — 1-1 —
I -BASIN BASIN
P6 P7
T -SHED I ASPHALT
PAVEMENT
PROPOSED I[. BROOSEI
UIIL
SHED DING
�\
PROPOSED = _ _ GRAVEL'—
RAIN GARDEN A
PROPOSED RAIN GARDEN _ J
OVERFLOW DRAIN SNICN
PACIFIC RAlLROA0
PROPOSED
RAIN GARDEN B
R E V I S 1 0 H
CATCH BASIN
CATCH BASIN
EXISTING COLLECTION
POINT FOR BASIN P11
(ROUGH DITCH LINE)
o
1-.
Houf Peterson
Righellis Inc.
R
KKV
SCALE:
1"=
60 '
SEREMERIDID
ryRB em�inetea4�ewrtvm.� min uv,
0 30
60
120
SCALE:
1"=
60 '
0&M RAIN GARDEN PLAN
PARR LUMBER - PHASE 2
SPRINGFIELD, OREGON
1
PARS
2.3.9 Rain Garden
Facility Description
Rain Gardens are
vegetated, flat bottomed, Rain Gar
shallow landscape
depressions used to collect
and hold stormwater
runoff. This allows
pollutants to settle and
filter out as water infiltrates
into the ground. Rain
gardens are water
reservoirs to collect and
treat stormwater runoff by
allowing the pollutants to
settle and filter out as the
water percolates through vegetation and soil
mediums before infiltrating into the ground
below or being piped to its downstream
destination. Rain gardens can also be sized to
infiltrate the flood control design storm and are
often used as complete on-site systems. Rain
gardens can be configured in a number of
different shapes making them very versatile for
integrating into site and landscape plans
Rain Gardens can be used to help fulfill a site's
required landscaping area requirement and should be integrated into the overall site
design. Numerous design variations of shape and planting scheme can be used to fit the
character of a site.
Rain Gardens qualify as infiltration and filtration facilities. Rain Gardens meet the
stormwater management standards for water quality and flow control when designed
under the Simplified Approach. Rain Gardens meet the stormwater management standards
for water quality, flow control and flood control when designed under the Presumptive
Approach.
Design Requirements
All facilities shall require an overflow to an approved discharge point unless sized to fully
infiltrate the flood control storm
Sizing, The Simplified Approach may be utilized for surface areas less than 15,000 square -
feet of impervious area. Rain Gardens shall use a sizing factor of 0.05 for water quality
using the Simplified Approach. Rain Gardens shall use a sizing factor of 0.11 for flow
control with the Simplified Approach.
Stormwater Management Manual 2-25
Eugene 2014
The Presumptive Approach shall be used for all other water quality, flow control and flood
control designs in conjunction with a measured infiltration rate. Rain gardens shall be
designed to pond water for less than 30 hours after each storm event.
Soil Suitability: Soils with infiltration rates greater than 2 in/hr shall be designed as
infiltration treatment facilities. Soils with infiltration rates less than 2 in/hr shall be
designed as filtration facilities.
Dimensions and Slopes: The facility storage depth must be at least 6 inches, unless the rain
garden is horizontally sized larger than required. The facility storage depth shall be no
more than 12 inches. Side slopes shall be a maximum of 3:1. The minimum bottom width
shall be 2 feet. The bottom shall have no more than 0.5% slopes.
Setbacks: Rain Gardens located within 10 -feet of building structures or 5 feet of property
lines must be lined with an impermeable waterproof liner.
Materials
Pining: Pipes shall be sized to convey design flow rates but shall be no less than 3 inches for
private piping. Private piping shall conform to the requirement of the Uniform Plumbing
Code. Sizing of public conveyance piping shall conform to the Public Improvement Design
Standards Manual.
Drain Rock: Drain rock may be used below the growing medium of a Rain Garden. Drain
rock can be used for retention, detention or conveyance. Drain rock shall be open graded,
washed 3/4 inch to 2-1/2 inch diameter. Drain rock and growing medium must be
separated by a geotextile.
Mulch: Washed pea gravel, river run rock or other non -floating mulch is recommended for
Rain Gardens. It should be applied 2 - 3 inches thick to cover all solid areas between plants.
It should not be over applied.
Waterproof Liners: The use of waterproof liners is discouraged as infiltration is
encouraged on all facility types. Waterproofing liners may be required in areas where
hydraulic isolation is required due to existing structural, hydrologic or geotechnical
limitations. Rain Gardens located within 10 feet of building foundations or 5 feet of
property lines must be lined with an impermeable membrane of 30 mil (minimum) plastic
film or equivalent.
Vegetation
The entire Rain Garden must maintain 90 percent coverage for vegetation. Vegetation shall
conform to the facility planting list located in Appendix D.
Stormwater Management Manual 2-26
Eugene 2014
Vegetated Rain Gardens shall be planted with minimum plant quantities from Schemes I, II
or III. Minimum plant quantities for vegetated Rain Gardens are as follows:
Vegetated Rain Garden Planting Scheme
I
II
III
Ground Cover, 4 -inch pots spaced 1' on center (per
100
80
80
100 square feet of the facffit
Large Shrubs, 3 gal. pots spaced 4' on center (per
2
2
100 square feet of the facffit
Small Shrubs, 1 gal. pots spaced 2' on center (per
4
4
100 square feet of the facffit
Evergreen tree, min. 6' height (per 200 square feet
1
of the facility)
Deciduous tree, 1-1h inch caliper (per 200 square
1
feet of the facility)
Rain Gardens may elect to use grasses for side slopes. Grasses on side slopes must have
100 percent coverage at establishment by native grasses, turf grasses, native wildflower
blends, native ground covers, or any combination thereof Seed shall be applied at the rates
specified by the supplier.
Vegetation or seed cover shall be established as soon as possible after the Rain Garden is
completed, and before water is allowed to enter the facility. Unless vegetation or seed cover
is established, biodegradable erosion control matting shall be installed in the flow area of
the Swale before allowing water to flow through the Swale.
Growine Medium: The growing medium shall be a minimum 12 inches of topsoil or the soil
shall be amended to support plant growth. Imported topsoil shall be a sandy loam mixed
with compost or a sand/soil/compost blend. It shall be roughly one-third compost by
volume, free -draining, and support plant growth. The compost shall be derived from plant
material; animal waste is not allowed. In all cases, the growing medium shall be 12 inches
deep.
Stormwater Management Manual 2-27
Eugene 2014
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1. Provide protection from all vehicle traffic, equipment staging,
and bot traffic in proposed infiltration areas priorlo, during,
and after construction.
2. Dimensions:
a. Depth of rain garden: 6" minimum and 17 maximum
b. Flat bottom width: 2' min.
c. Side slopes of Rain Garden: 3:1 maou num.
3. Setbacks:
a. Infiltration rain gardens must be 1 I from
foundations and 5' ftom property lines.
Filtration Rain Garden do not require a setback with
an approved waterproof liner.
4. Overlow:
a. Overflows are required unless sized to fully infiltrate
the flood control design storm.
b. Inlet elevation must Alm for 2" of freeboard,
minimum.
5. Piping: Minimum 3" pipe required for up to 1,5DD sq fl of
impervious area, otherwise F min. Piping material, slopes
and installation shal blow the Unflarm Plumbing Code,
6. Growing medium:
a.12" minimum
b. Imported topsoil or amended native topsoil.
Vegetation: Folowlandscape plans otherwise refer to plant list in
SIMAMAppendi F. Number of plantings per 1DDsf offacility area:
a.1DD Ground Covers, OR
b. 8D Ground Covers, 2 Large Shrubs 4 Small Shrubs
and 1 tress (deciduous or evergreen)
11). Install washed pea gravel or river rock to transition from
inlets and splash pad to growing medium.
CITY OF INFILTRATION RAIN GARDENscn�E "Nis
EUGENE, OREGON DRnuN err sNG
2 DEPARTMENT OF PUBLIC WORKS TYPICAL DETAILS
ENGINEERNG DIVISIDN
STORMWATER MANAGEMENT FACILITY
INSPECTION AND MAINTENANCE LOG
Property Address: 1291 S A Street, Springfield, Oregon 97477
Inspection Date:
Ins ection Time:
Inspected By:
Approximate Date/Time of Last Rainfall:
Type of Stormwater Management Facility: Rain garden
Location of Facility on Site (In relation to buildings or other permanent structures):
Water levels and observations (Oil sheen, smell, turbidity, etc.):
Sediment accumulation and record of sediment removal:
Condition of vegetation (Height, survival rates, invasive species present, etc.) and record of
replacement and management (mowing, weeding, etc.):
Condition of physical properties such as inlets, outlets, piping, fences, irrigation facilities, and
side slopes. Record damaged items and replacement activities:
Presence of insects or vectors. Record control activities:
Identify safety hazards present. Record resolution activities:
Appendix 3A-3 Page 1 of 1 EDSP Adopted December 03, 2012
Rain Gardens
Operations and Maintenance Plan
A vegetated Infiltration Basin or rain garden is a vegetated depression created by excavation, berms,
or small dams to provide for short-term ponding of surface water until it percolates into the soil. The
basin shall infiltrate stormovater within 24 hours. All facility components and vegetation shall be
inspected for proper operations and stmchual stability, at a minimum, quarterly for the first 2 years from
the date of installation, 2 times per year thereafter, and within 49 hours after each maj or storm event. The
facility owner must keep a log, recording all inspection dates, observations, and maintenance activities.
The following items shall be inspected and maintained as stated:
Basin Inlet shall assure umestiicted stormwater flow to the vegetated basin.
• Sources of erosion shall be identified and controlled when native soil is exposed or erosion channels
are present.
• Inlet shall be cleared when conveyance capacity is plugged.
• Rocks lash pads shall be replenished to prevent erosion.
Embankment, Dikes, Berms and Side Slopes retain water in the infiltration basin.
• Structural deficiencies shall be corrected upon discovery:
o Slopes shall be stabilized using appropriate erosion control measures when soil is exposed/ flow
charnels are forming.
o Sources of erosion damage shall be identified and controlled.
Overflow or Emergency Spillway conveys flow exceeding reservoir capacity to an approved stormwater
receiving system.
• Overflow shall be cleared when 25% of the conveyance capacity is plugged.
• Sources of erosion damage shall be identified and controlled when soil is exposed.
• Rocks or other armament shall be replaced when only one layer of rock exists.
Filter Media shall allow stormwater to percolate uniformly through the infiltration basin. If water
remains 36-49 hours after storm, sources of possible clogging shall be identified and corrected.
• Basin shall be raked and, if necessary, soil shall be excavated, and cleaned or replaced.
• Infiltration area shall be protected from compaction during construction.
Sediment/ Basin Debris Management shall prevent loss of infiltration basin volume caused by
sedimentation. Gauges located at the opposite ends of the basin shall be maintained to monitor
sedimentation.
• Sediment and debris exceeding 3 inch in depth shall be removed every 2-5 years or sooner if
performance is affected.
Debris and Litter shall be removed to ensure stormovater infiltration and to prevent clogging of overflow
drains and interference with plant growth.
• Restricted sources of sediment and debris, such as discarded lawn clippings, shall be identified and
prevented.
Vegetation shall be healthy and dense enough to provide filtering while protecting underlying soils from
erosion.
• Mulch shall be replenished as needed to ensure healthy plant growth
• Vegetation, large shrubs or trees that limit access or interfere with basin operation shall be pruned or
removed.
• Grass shall be mowed to 4"-9" high and grass clippings shall be removed no less than 2 times per
year.
• Fallen leaves and debris from deciduous plant foliage shall be raked and removed if build up is
damaging vegetation.
• Nuisance or prohibited vegetation (such as blackberries or English Ivy) shall be removed when
discovered. Invasive vegetation contributing up to 25% of vegetation of all species shall be removed.
• Dead vegetation shall be removed to maintain less than 10% of area coverage or when infiltration
Appendix 3A-4 Page 15 of 31 EDSP Adopted December 03, 2012
basin function is impaired. Vegetation shall be replaced within 3 months, or immediately if required
to control erosion.
Spill Prevention measures shall be exercised when handling substances that contaminate stormwater.
Releases of pollutants shall be corrected as soon as identified.
Training and/or written guidance information for operating and maintaining vegetated infiltration
basins shall be provided to all property owners and tenants. A copy of the O&M Plan shall be provided to
all property owners and tenants.
Access to the infiltration basin shall be safe and efficient. Egress and ingress routes shall be maintained
to design standards. Roadways shall be maintained to accommodate size and weight of vehicles, if
applicable.
• Obstacles preventing maintenance personnel and/or equipment access to the infiltration basin shall be
removed.
• Gravel or ground cover shall be added if erosion occurs, e.g., due to vehicular or pedestrian traffic.
Insects and Rodents shall not be harbored in the infiltration basin. Pest control measures shall be taken
when insects/roderts are found to be present.
• If a complaint is received or an inspection reveals that a stormwater facility is significantly infested
with mosquitoes or other vectors, the property owner/owners or their designee may be required to
eliminate the infestation at the City inspector's discretion. Control of the infestation shall be
attempted by using first non -chemical methods and secondly, only those chemical methods
specifically approved by the City's inspector. Acceptable methods include but are not limited to the
following:
i. Installation of predacious bird or bat nesting boxes.
ii. Alterations of pond water levels approximately every four days in order to disrupt mosquito larval
development cycles.
iii. Stocking ponds and other permanent water facilities with fish or other predatory species.
iv. If non -chemical methods have proved unsuccessful, contact the City inspector prior to use of
chemical methods such as the mosquito larvicides Bacillus thurengensis var. israchensis or other
approved larvicides. These materials may only be used with City inspector approval if evidence
can be provided that these materials will not migrate off-site or enter the public stormwater
system. Chemical larvicides shall be applied by a licensed individual or contractor.
• Holes in the ground located in and around the infiltration basin shall be filled.
If used at this site, the following will be applicable:
Fences shall be maintained to preserve their functionality and appearance.
• Collapsed fences shall be restored to an upright position.
• Jagged edges and damaged fences shall be repaired or replaced.
Appendix 3A-4 Page 16 of 31 EDSP Adopted December 03, 2012