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HomeMy WebLinkAboutApplication APPLICANT 9/15/2020City of Springfield Development Services Department 225 Fifth Street Springfield, OR 97477 Final Site Plan Review SPRINGFIELD I& AMU Application Site Plan: ® Minor Site Plan Modification: ❑ Ma'or Site Plan Modification: ❑ Required Project Information (Applicant: complete this section) Applicant Name: Justin Paslay Phone: 541.686.2365 ZAP, LLC Company: JuIn CF Fax: newwayelectriccom Address: PO Box 21503, Eugene, Oregon 97402 Applicant's Rep.: Kristen Taylor Phone: 541-687-1010 Company: TBG Architects + Planners Fax: ktaylor@tbg-arch.com Address: 132 East Broadway, Suite 200, Eugene, Oregon 97401 Property Owner: Shaun Hyland Phone: 541.726.8081 Company: 30th Street Business Park, LLC Fax: Shaun@jhconst.com Address: PO Box 7867, Eugene, Oregon 97475 ASSESSOR'S MAP NO: 17-02-31-00 TAX LOT NO 5 : 3900 Property Address: Not yet assigned Size of Property: 1.0 Acres x❑ Square Feet ❑ Proposed Name of Project: Description Of If you are filling In this form by hand, please attach your proposal description to this application, P Site Plan Reneuapprwsl of we industrial building vnM the asscdatetl site infrastru=re, parking and landscaping. The building is a t "ory Proposal: about 12,817 -square -foot building vnM a single tenant. Existing Use: Undeveloped I Tentative Case #: 811-20-000110-TVP2 Signatures: Please sign and Drint your name and date in the appropriate box on the next page. Required Project Information (City Intake Staff., complete this section) Associated Applications: Case No.: Date: Reviewed by: Application Fee: TechnicalFee: Posta a Fee: 0 TOTAL FEES: PROJECT NUMBER: Revised 1/1/08 Molly Markarian 1 of 4 Signature Owner: I represent this application to be complete for submittal to the City. I affirm that the information identified by the City as necessary for processing the application is provided herein or the Information will not be provided if not otherwise contained within the submittal, and the City may begin processing the application with the information as submitted. This statement serves as written notice pursuant to the requirements of ORS 227.178 pertaining to a complete application. sz' �4'yA� Date: 9-14-20 Signature/ Shaun Hyland Revised 1/1/08 Molly Markarian 2 of 4 Final Site Plan Review Application Process 1. Applicant Submits a Final Site Plan Review Application to the Development Services Department The application must conform to the Final Site Plan Review Submittal Requirements Checklist on page 4 of this application packet. Planning Division staff screen the submittal at the front counter to determine whether all required items listed in the Final Site Plan Review 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 & Issues Final Approval • 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. 4. City Drafts a Development Agreement Applicant and City sign Development Agreement Final Site Plan and Development Agreement become null and void if construction has not begun within two years of signing the Development Agreement. 5. City Conducts Final Site Inspection City authorizes provision of public facilities and services and issues Certificate of Occupancy Revised 1/1/08 Molly Markarian 3 of 4 Final Site Plan Review Submittal Requirements Checklist NOTE: If you feel an item does not apply, please state the reason why and attach the explanation to this form. 0 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 Services Department. The applicable application, technology, and postage fees are collected at the time of complete application submittal. 0 Final Site Plan Review Application Form E Letter Addressing Conditions of Approval - lists and addresses each condition of approval, detailing the actions taken and current status of each item. 0 Five (5) Copies of the Final Site Plan Sets incorporating all required modifications and applicable conditions Fx-1 Additional Documents requested as Conditions of Approval as part of the Site Plan Review decision. Revised 1/1/08 Molly Markarian 4 of 4 ARCHITECTS ♦PLANNERS September 15, 2020 Mr. Andrew Larson City of Springfield Development Services Planning Division 225 5" Street Springfield, Oregon 97477 RE: New Way Electric 30" Industrial Development (202006/1.3) Final Site Plan Review Application (811-20-000110-TYP2) Project Address: 30" Street— Not Yet Assigned Assessor's Map & Tax Lot: Map 17-02-31-00, Tax Lot 3900 Property Owner: Hyland Business Park, LLC Contact: Shaun Hyland Applicant: ZAP, LLC Contact: Justin Paslay Mailing Address: PO Box 21503 Eugene, Oregon 97402 Phone: 541.686.2365 E-mail: justin@newwayelectdc.com Applicant's Representative: TBG Architects + Planners Contact: Kristen Taylor, CSBA Mailing Address: 132 East Broadway, Suite 200 Eugene, Oregon 97401 Phone: 541.687.1010 E-mail: ktaylor@tbg-arch.com 8 =11 81x:7_1 DID] N *f -i L` IC1401 k, I1111110 101 k, [40] 211:11:11 :10171111 In accordance with the Final Site Plan Review submittal requirements, this letter addresses the Conditions of Approval outlined in the Type 11, Tentative Site Plan Review, Staff Report & Decision and demonstrates that the proposal complies with the applicable criteria under SDC 5.17-135. The proposal is subject to the Type I application review process per SDC 5.17-135(B). Tentative Site Plan Review Conditions of Approval This section is organized by documenting the applicable Conditions of Approval in bold italics, followed by the description of actions taken and current status of each item in normal text. 541.687.1010 1132 EAST BROADWAY. SU I TE 2001 EUGENE. OREGON 97401 1 TBG -ARCH. COM City of Springfield Final Site Plan Review Application September 14, 2020 Page 2 of 4 1. The All utility lines installed to serve the development site shall be placed underground in accordance with SDC 4.3-125. Reference the attached revised Sheets C3.1 and Al.1 (see Site Plan Review Notes) with a note that all utility lines installed to serve the development site shall be placed underground in accordance with SDC 4.3-125. 2. The Final Site Plan shall provide for a neutral, non -reflective finish for the water service backflow prevention equipment enclosures and related appurtenances to be installed at the southeast corner of the site. Reference the attached revised Sheets C3.1 and Al.1 (see Site Plan Review Notes) with a note indicating that a neutral, non -reflective finish for the water service backflow prevention equipment enclosures and related appurtenances to be installed at the southeast comer of the site. 3. The applicant will add a note to the final site plan on sheet AL I (Site Plan) and sheet C3.1 (utility plan) that a sanitary sewer drain is to be installed in the trash enclosure attachment. Reference the attached revised Sheets C3.1 and A1.1 showing a sanitary sewer drain is to be installed in the trash enclosure attachment. 4. On the final site plan the applicant will show a suitable sanitary sewer drain that meets all requirements of section 3.6 to be installed at all overhead door and future overhead door locations. Reference the attached revised Sheets C4.1 and Al.1 showing the required notes that meet all requirements of section 3.6 to be installed at all overhead bay doors and future overhead bay door locations. 5. Prior to approval of the final site plan, the applicant shall provide an operations and maintenance plan to the City for review to ensure the long-term maintenance and operation of the proposed rain gardens, consistent with maintenance criteria required by EDSPM 3.03.1. The plan should designate maintenance responsibility for operating and maintaining the systems and should be distributed to all property owners and tenants of the site. Reference the attached Operations and Maintenance Plan between the applicant and the City of Springfield to ensure viable long-term maintenance and operation of the proposed rain gardens, consistent with maintenance criteria required by EDSPM 3.03.1. The operations and maintenance plan designates the responsible party for operating and maintaining the system and shall be distributed to all property owners and tenants of the site. The applicant will pay the City fee to have the City record the Plan. IM. A-1 TEIT III IIE City of Springfield Final Site Plan Review Application September 14, 2020 Page 3 of 4 6. To ensure a fully functioning water quality system and meet objectives of Springfield's MS4 permit, the Springfield Development Code and the EDSPM, the proposed rain gardens shall be fully vegetated with all vegetation species established prior to approval of Final site inspection. Alternatively, if this condition cannot be met, the applicant shall provide and maintain additional interim erosion control/water quality measures acceptable to the Public Works Department that will suffice until such time as the swale vegetation becomes fully established. The rain garden and stormwater planter will be fully vegetated with all vegetation species established prior to issuance of final occupancy and commencement of operations. Alternatively, if this condition cannot be met, the applicant will provide and maintain additional interim erosion control/water quality measures acceptable to the Development & Public Works Department that will suffice until such time as the rain garden and stormwater planter vegetation becomes fully established. The interim erosion control measures will be in addition to the required plantings for the site. Reference the attached Sheets C1.1, C3.1 and LA -1. 7. The applicant will show on the final site plan that this existing street light head will be replaced with a LED fixture that meets current City of Springfield standards for street lighting. Reference the attached revised Sheet E000 Site Lighting Photometric Plan, for the note that the existing streetlight head will be replaced with a LED fixture that meets current City of Springfield standards for street lighting. 8. Prior to Final Site Plan approval, the applicant shall obtain either a Drinking Water Protection Permit or an Exemption from SUB Drinking Water Source Protection Coordinator. Prior to Final Site Plan approval, the applicant will apply for and obtain a Drinking Water Protection (DWP) Permit or DWP Exemption from SUB Drinking Water Source Protection Coordinator. 9. The property owner shall be responsible for ongoing and perpetual maintenance of the private stormwater facilities on the site to ensure they function as designed and intended, and to ensure protection of groundwater resources. Annual maintenance records shall be kept by the property owner and provided to the City for review upon reasonable request— normally within five business days. The property owner will be responsible for ongoing and perpetual maintenance of the private stormwater facilities on the site to ensure they function as designed and intended, and to ensure protection of groundwater resources. Annual maintenance records will be kept by the property owner and provided to the City for review upon reasonable request – normally within five business days. See "Vegetated Stormwater Facility Notes" on C1.1. IM. —a I TEETE.o,e„.—I City of Springfield Final Site Plan Review Application September 14, 2020 Page 4 of 4 Conclusion Based on the information and findings contained in this letter and associated drawings the Final Site Plan Review application meets the criteria of approval contained in the Springfield Development Code. Therefore, the applicant requests that the Planning Director approve the proposal as presented. Both the applicant and the applicant's representative are available for questions as necessary. If you have any questions about the above application, please do not hesitate to contact Kristen Taylor at TBG Architects+ Planners (541.687.1010). KGT/nl Attachments- 2 Copies: Final Site Plan Review Application Form Executed Operations and Maintenance Plan Notice of Operations and Maintenance Plan Plan Sets- 5 Copies T1 Title Sheet Topographic Survey C1.1 Civil Notes C2.1 Demolition Plan C3.1 Utility Plan C4.1 Grading Plan EC1.0 Erosion Control Plan A1.1 Site Plan A2.1 First Floor Plan A2.2 Second Floor Plan A3.1 Exterior Elevations LA -1 Landscape Plan E000 Site Lighting Photometric Plan cc: Jason and Brandon Paslay, ZAP, LLC Anna Backus, KPFF Consulting Engineers, Inc. David Dougherty, Dougherty Landscape Architects Z%PROJ\2020g8 New Way Ele cMM St SpdngWdl ro p%gwcy0te Ran ReAeM2020DS-Rnal SPR Reeve .d= 1■. n a c Ni T s IT s I P L a N u sas Operations & Maintenance Manual 30th Street New Way Electric In order for the stormwater treat ment facilities to continue operating at acceptable levels, regular maintenance and inspection are required. This plan provides maintenance and inspection instructions. The Operations and Maintenance Plan shall be recorded with Lane County. Prepared for: New Way Electric Prepared by: Caleb Mau Project Engineer: Anna Backus, PE September 2020 1 KPFF Project 42000123 Table of Contents A. Responsibility.......... B. Descriotions............ 2 Appendices Appendix A Notice of Operations and Maintenance Agreement - (NOMA) Appendix B Operations and Maintenance Agreement— (0&M Agreement) Appendix C Stormwater Management Site Plan Appendix D Landscape Plan Appendix E Stormwater Management Facility Inspection and Maintenance Log Appendix F Facility Specific Operations and Maintenance Plans— (O&M Plan) 30th street New Way Electric I KPFF Consulting Engineers 1 OFEMTONS AND MAINTENANCE REPORT Responsibility The facility is to be maintained by the property owner. The prepare has designed a system that can be easily maintained by the maintenance staff. A copy of the Operations and Maintenance (O&M) Plan shall be provided to all property owners and property managers. Descriptions The Stormwater System collects and treats runoff from pollution -generating surfaces within the site as required by the City of Springfield. All runoff from the impervious surfaces at 30th Street New Way Electric site will be treated by a two rain gardens. A rain garden located in the northwest corner of the site will receive runoff from the western half of the site, including all of the roof area. A smaller rain garden located along the eastern property boundary will receive runoff from the eastern half of the site. Overflows in the rain gardens will pipe water south into the existing shared storm main in the access easement, which ouffalls into the public open drainage on the east side of 30th Street. Definitions Rain Gardens are vegetated, flat bottomed, shallow landscape depressions used to collect and hold stormwater runoff. Growing Media: Specialty soil containing little to no fines designed to filter stormwater reliably without clogging. In the event that the planter soil needs to be replaced, it must be replaced with soil that matches the building's plans and specifications. Overflow Inlet: A vertical pipe with an atrium grate over it that allows stormwater from large rain events to bypass treatment and enter the downstream storm system. The grate prevents debris and rodents from entering the piped storm system. The domed nature of the grate discourages clogging at the inlet. Schedule The whole system shall be inspected and maintained annually and within 48 hours after each major storm event. For this O&M plan, a major storm event is defined as 2.0 inches of rain in 24 hours or more. All components of the storm system as described below must be inspected and maintained frequently, or they will cease to function effectively. The facility owner must keep a log recording all inspection dates, observations, and maintenance activities. Receipts shall be saved when maintenance is performed so there is a record of expense. Procedure Rain Garden See Appendix F for required maintenance procedure 30th street New Way Electric I KPFF Consuhing Engineers OPERATIONS AND MAINTENANCE REPORT Inlets, Drains, and Basins • Shall be inspected for obstructions, debris, oil and grease, which shall be removed upon discovery. • If water ponds over the inlet for more than 2 hours after a major storm, the inlet drain may be clogged. • Check for debris/sediment accumulation in and around the inlet or overflow, rake and remove evaluate upland causes (erosion, surface debris, etc.). Piped Storm System • Annually inspection for clogging shall be performed. • Shall be inspected for cracks or leaks during each inspection. • Cleaning shall be done without use of detergents or surfactants. A pressure washer may be used if necessary. 2000123 s 30th Street New Way Electric I KPFFconsu ing Engineers OPERATIONS AND MAINTENANCE REPORT Appendix A Notice of Operations and Maintenance Agreement - (NOMA) 30'" Street New Way Electno I KPFF Consulting Engineers OPERATIONS AND MAINTENANCE REPORT Notice of Operations and Maintenance Agreement Private Stonnwater 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. PAZ LLC (Property Owner/Developer) acknowledges and agrees to maintain private stormwater treatment facilities listed in this document. The maintenance of the stormwater 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 stormwater 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 stormwater system and the quality of receiving waters. The requirement to operate and maintain the stormwater 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 8 a.m. and 5 p. in., Monday through Friday. The Subject premises, is legally described as follows: (Tax lot number cannot be used to describe the property. Legal descriptions may be idtamedfrom the county 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 on ' ed It executed this instrument on this 14th day of September 21120 . Owner(s): Signature Print e stin Pasl BrandoVsa STATE OF OREGON, County of Lane, This instrument as acknowledged before me on P 11i � ti y�A by j `f S}Iy1 �z81nU owner(s) of the above described premises. fX Is instr1ument as acknowledged before me on , }ffn�1Pf 1� 1� by N(lnvl l�tSlkn , owner(s) of the above described L/b7 /1719;;1 1) My Commission Expires '/ COMMISSION NO.873&90 MVCOMMISSIONEXPIRES APRIL 17, 2072 RESERVE THIS SPACE FOR RECORDING STICKER —Avoid $20 nonstandard doc FEE (font too small)... RETURN TO: CITY OF SPRINGFIELD Print this form on Legal size paper. DEVELOPMENT & PUBLIC WORKS DEPT. 225 FIFTH ST. SPRINGFIELD, OREGON 97477 Appendix 3A-1 Ra" oirz7m Page 1 of 1 EDSP Adopted December 03 2012 PARCEL RECORD- Cartographic Unit �65%s8� Page of a rep wriMlp 17 fl¢nBe 02 Se¢IKa 31 A 0 /¢ 0 perplNwnMr - 039OG iryg NumOBr Formeriypanot 17-02-31-00-00301. 00303 & 00304 MMEMMa Numeer specie[ MINIM Tax Lot Number [nteresi History of Parcel Prlw to R-Re e g History of Parcel Exceptions/Additions NEW SUBDIVISION PLAT Det*ol Entry/ pcqulsitlpn 2003 Deed Recprtl Awes Remaining 1. 0 0 Volume 2002- Pa 69738 JEFF PARKER. SUBDIVISION LOT zw lls oO 4k4 'A- w $ Remarks *Does not read as above but includes all therein ISeeOt-0$Ondn Appendix B Operations and Maintenance Agreement — (O&M Agreement) 30'^ Street New Way Electric I KPFF C Srauking Engineers OPERATIONS AND MAINTENANCE REPORT Operations and Maintenance Agreement Private Stormwater Management and Treatment System Land Development Application Number: 811-20-000110-TYP2 Owner's Name: PAZ, LLC Phone No.: 541-686-2365 Mailing Address: PO Box 21503 State OR Site Site Map and Tax lot No.:1702310003900 (Or attach documer+t wft6 addtnorollat injormanon iffhe facility crosses more than one lot) Type of Facility(ies) Rain gardens Requirements 1) Stormwater Management Site Plan, (min. 8 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 runoff 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 stormwater management facility(ies) shown on the Site Plan we a required condition of development approval for the identified property. The owner of the identified property is required to operate and maintain the f icility(ies) in accordance with the Facility Specific Operation and Maintenance Plans) (O&M Plan(s)) attached to this form and on file with the City. The O&M Plan for the facility(ies) will be available at the Development and Public Works Department, 225 5i° Street, Springfield, Oregon between the hours of 8 a.m. and 5 p.m., Monday through Friday. 2) Financially responsible party (circle one): roperty 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 Plants) 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: September 11 2020 By signing below, Filer accepts anda s o the terms and conditions contained in the Operations and Maintenance Plants) and in any doe en Seputed by'Filer and recorded with it. Filer Signature: Print Name: , Appendix 3A-2 Rev 01/26n6 Page 1 of 1 EDSP Adopted December 03, 2012 Appendix C Stormwater Management Site Plan 301° Street New Way Electric I KPFF Consulting Engineers OPERATIONS AND MAINTENANCE REPORT STRUCTURE TABLE STRUCTURE TABLE kpff SHEET NOTm.✓® r mw'rvurwumxwnrcuemmnwm�m�w. Aft n nwx �vuurvremux ��Y� M E erv'w,mennw.'ucn. � "O UTILINKLVNOTES rxxmm,uum mmvvn,axw�.e '� Z /W ,y �mry amour m O J ` W U w W � W F -- v QZUo UTILIN ABEL LEGEND Si MIE uBEL Z: Z J W W Z r0i ng 0, PIPE LABEL EP —eh ,,,F STROLTDREa,TMew<v».rvuex OMD ,�x�L® FC3.1x..,,.w,o STRUCTURE TABLE kpff SHEET NOTm.✓® r mw'rvurwumxwnrcuemmnwm�m�w. Aft n nwx �vuurvremux ��Y� M E erv'w,mennw.'ucn. � "O UTILINKLVNOTES rxxmm,uum mmvvn,axw�.e '� Z /W ,y �mry amour m O J ` W U w W � W F -- v QZUo UTILIN ABEL LEGEND Si MIE uBEL Z: Z J W W Z r0i ng 0, PIPE LABEL EP —eh ,,,F STROLTDREa,TMew<v».rvuex OMD ,�x�L® FC3.1x..,,.w,o kpff SHEET NOTm.✓® r mw'rvurwumxwnrcuemmnwm�m�w. Aft n nwx �vuurvremux ��Y� M E erv'w,mennw.'ucn. � "O UTILINKLVNOTES rxxmm,uum mmvvn,axw�.e '� Z /W ,y �mry amour m O J ` W U w W � W F -- v QZUo UTILIN ABEL LEGEND Si MIE uBEL Z: Z J W W Z r0i ng 0, PIPE LABEL EP —eh ,,,F STROLTDREa,TMew<v».rvuex OMD ,�x�L® FC3.1x..,,.w,o Appendix D Landscape Plan 30^ Street New Way Eli I KPFF Consulting Engineers OPERATIONS AND MAINTENANCE REPORT Appendix E Stormwater Management Facility Inspection and Maintenance Log 301° Street New Way Electric I KPFF Consulting Engineers OPERATIONS AND MAINTENANCE REPORT STORMWATER MANAGEMENT FACILITY INSPECTION AND MAINTENANCE LOG Property Address: Inspection Date: Inspection Time: Inspected By: Approximate Date/Time of Last Rainfall: Type of Stormwater Management Facility: 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 Appendix F Facility Specific Operations and Maintenance Plans — (O&M Plan) 301^ Street New Way Electric I KPFF Consulting Engineers OPERATIONS AND MAINTENANCE REPORT 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 stormwater within 24 hours. All facility components and vegetation shall be inspected for proper operations and structural stability, at a minimum, quarterly for the first 2 years from the date of installation, 2 times per year thereafter, and within 48 hours after each major 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 unrestricted 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 channels 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 3648 bums 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 stormwater 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.., 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/rodents 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. israeliensis 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