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MRSC Services Related Services Staff Directory Employment Contact Us. Do you have a comment or suggestion. Media request? Want to report a broken link. Contact Us See also MRSC's Low Impact Development page. IV - Source Control (Best Management Practices Manual), 2008 Stormwater Resources, Puget Sound Partnership V - Runoff Treatment, Flow Control, and LID BMP Library BMPs, Washington State Department of Ecology (2019) II - Construction Stormwater Pollution Prevention, Washington State Department of Ecology (2019) II - Construction Stormwater Pollution Prevention (amended 2012) II: Construction Stormwater Pollution Prevention (2016) Three types of shoulder materials were tested: conventional asphalt, gravel, and porous asphalt. A storm drain maintenance program is required to ensure that ditches, culverts, catch basins and storm sewers are kept clean of sand, silt and other debris that may plug the system. Learning More In an area with natural ground cover, only 10 of rainwater becomes runoff. The rest is absorbed or evaporates. In urban areas, up to 55 of rainfall can become storm water runoff. Learn more about stormwater at the Washington Stormwater Center. If you are interested in setting up a session in your classroom, please work through your school's representative to contact the Education Coordinator at the Franklin Conservation District. The City partners with sister cities to provide educational outreach at the following events: For stormwater design, construction and post construction management within the City of Kennewick, please follow this manual as well as the City's codes and standards which take precedence.
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1990 Stormwater Comprehensive Plan 2007 Stormwater Comprehensive Plan Predicted Soil Infiltration Map 2019 Southridge Area Stormwater Master Plan Low Impact Development In compliance with the new municipal stormwater permits issued by the Washington State Department of Ecology (Ecology), the City of Kennewick recommends the use Low Impact Development (LID) for new developments and redevelopment unless site conditions are prohibitive. Ecology received initial funding from the Legislature to provide Free LID training. These training, the Eastern Washington Low Impact Development Guidance Manual, and other resources are available online through the Water Quality Section of the Washington State Department of Ecology website. NPDES Stormwater Management The City of Kennewick manages stormwater in accordance with the current Eastern Washington Phase II NPDES Permit through the Washington State Department of Ecology and the City of Kennewick Comprehensive Stormwater Plan.. There are 34 maintained public parks and facilities spread throughout the city with 855 total acres of which about 400 is green space. Recreation Website Property owners can also find parcel information, zoning, utilities, etc. Go to Maps. Here's the link to view the current Eastern Washington Phase II Municipal Stormwater Permit (NPDES Stormwater Permit). It is also available on the Ecology Website. Click here. This ordinance is designed to prevent water pollution and protect water quality within our rivers, lakes, streams, and aquifer. View Spokane County Code, Title 9, Chapter 9.14 (PDF). Stormwater Management Program Spokane County is required to accomplish tasks associated with six (6) minimum control measures: education and outreach; public involvement and participation; illicit discharge detection and elimination; construction site runoff and post construction management; and pollution prevention and good housekeeping for municipal operations.
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To learn more about the NPDES Permit and minimum control measures visit their website. In accordance with the NPDES Permit, Annual Reports have been completed annually and submitted to the Department of Ecology. Each Annual Report includes an updated draft copy of the Spokane County Stormwater Management Program (SWMP). The SWMP is currently a public working document until formal adoption procedures are completed prior to the end of the five year permit cycle in 2012. The Annual Report is too large to be linked for public access. The link below will take you to the Spokane County Draft Stormwater Management Program. Both documents are available for public review and comment. The O and M Plan includes all Spokane County departments' facilities, properties and related activities that have the potential to impact surface water quality. Who Needs Construction Stormwater Permit Coverage. Please answer the following questions: Remember to count the cumulative acreage of the entire project whether in a single or in a multiphase project.In almost every case, the answer to this question is yes. Construction site operators must apply for a permit 60 days prior to discharging stormwater. For more information visit Ecology's website. If a Construction General Permit is required by The Department of Ecology, you will need a Certified Erosion and Sediment Control Lead (CESCL) to monitor stormwater controls on your construction site. Access the CESCL Training Calendar (PDF). Underground Injection Control (UIC) Underground Injection Control are also known as “dry wells”. The Underground Injection Control program was created by Congress to protect underground sources of drinking water from discharges of fluids to the ground. The UIC program in the state of Washington is administered by the Department of Ecology. In Washington State all ground water is protected equally under RCW 90.48 and Chapter 173-200 WAC Water Quality Standards for Ground Waters of the State of Washington.
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The two basic requirements of the UIC Program are: Well on tribal land should be registered with the Environmental Protection Agency. Pollution of ground water from stormwater discharges can be prevented by careful design of the UIC well, strategic siting and effective operation and maintenance. Pollution can also be prevented by use of treatment before discharge to the sub-surface and by reducing the stormwater contact with potential sources of contamination. UIC wells must be registered. Limited Impact Development (LID) The Eastern Washington LID Guidance Manual is a collaborative product of Spokane County, the Washington State Department of Ecology, the Washington Stormwater Center, Washington State University, and Eastern Washington Phase II Municipal Stormwater Permittees. Funding for the project to create the manual was provided by the Department of Ecology. Eastern Washington LID Guidance Manual. This update is now live and can be accessed from Ecology’s website: The objectives of this Manual update were to: Clarify redevelopment requirements; Add or refine Best Management Practice (BMP) standards; Improve alignment with other State standards and guidance; and Enhance ease of use. A new on-line version of the Manual helps enhance ease of use by including: Internal hyperlinks for easier, faster access to relevant tables, figures, and text sections; External hyperlinks and embedded PDF files to available reference documents; Content summaries; and Navigable table of contents and list of equations This presentation will provide an overview of the process for updating the Manual and highlight some of the key changes in the 2019 version. Attendees at this presentation will receive an update on latest stormwater guidance for Eastern Washington, as well as latest statewide guidance on Underground Injection Control (UIC) facilities applicable in both western and eastern Washington. Click here for full details and to register.
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Puget Sound Regional Council 1011 Western Avenue. All land-disturbing activities, new development and redevelopment unless otherwise exempted in accordance with WCC 12.10.030 shall be required to comply with the standards and requirements set forth by this chapter and the:( a1) City of Wenatchee standards; and (b) The most current City of Wenatchee comprehensive stormwater plan as adopted by the city council; and (c2) Stormwater Management Manual for Eastern Washington (SWMMEW). The Manual meets or exceeds applicable criteria from the Washington State Department of Ecology’s Stormwater Management Manual for Eastern Washington (SWMMEW). This permit requires the City to implement an ordinance that requires all new development and redevelopment projects and land disturbing activities 1 acre or more in size or part of a common plan of development or sale that disturb 1 acre or more to comply with the standards and requirements of Ecology’s Stormwater Management Manual for Eastern Washington (SWMMEW) or an approved equivalent. All rights reserved. View our Terms of Service and Privacy Policy. They will be used by the development community and others who will create stormwater runoff through land-disturbing activities. The purpose of this chapter will be met through the following: The requirements of this chapter are minimum standards and a person’s compliance with the same shall not relieve such person from the duty of enacting all measures necessary to minimize pollution of receiving waters. The county engineer is hereby authorized and designated as the official responsible for the enforcement and administration of this chapter. The use of the terms “stormwater authority,” “administrative authority,” “code official,” “authority having jurisdiction” and similar such terms as contained in this chapter and in the codes and standards adopted by reference under this chapter shall be construed as referring to the county engineer and their designees.
Use of BMPs from other technical stormwater manuals approved by Ecology shall be consistent with Chelan County climate, soils, and specific site conditions appropriate for said BMP use. Stormwater practices that are designed, constructed, and maintained in accordance with these design and sizing criteria will be presumed to meet the minimum water quality performance standards of the Eastern Washington Phase II Municipal Stormwater Permit requirements. The most current version of the SWMMEW is to be used where referenced by this chapter. In addition, the following shall mean: BMPs include treatment systems, operating procedures, and practices to control: stormwater associated with construction activity, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. If the project is part of a common plan of development or sale, the disturbed area of the entire plan shall be used in determining permit requirements. See definitions for each. Erosion and sediment control BMPs are synonymous with stabilization and structural BMPs. A hard surface area which causes water to run off the surface in greater quantities or at an increased rate of flow from the flow present under natural conditions prior to development. Common impervious surfaces include, but are not limited to, roof tops, walkways, patios, driveways, parking lots or storage areas, concrete or asphalt paving, gravel roads, packed earthen materials, and oiled, macadam or other surfaces which similarly impede the natural infiltration of stormwater. For purposes of determining whether thresholds for application of core elements are exceeded, open, uncovered retention or detention facilities shall not be considered as impervious surfaces. Open, uncovered retention or detention facilities shall be considered impervious surfaces for purposes of runoff modeling.
For the purpose of this chapter, “development” also means any manmade change to improved or unimproved real estate, including but not limited to buildings or other structures, mining, dredging, filling, grading, paving, excavation, drilling, temporary or permanent storage of equipment and works defined in this chapter. Land-disturbing activities include, but are not limited to, clearing, grading, filling, and excavation. Compaction associated with stabilization of structures and road construction shall also be considered a land-disturbing activity. Vegetation maintenance practices are not considered land-disturbing activity. In the county, the MS4 is that portion regulated by the Eastern Washington Phase II Municipal Stormwater Permit. These permits are referred to as NPDES permits and, in Washington State, are administered by the Washington State Department of Ecology. Roofs that are subject only to atmospheric deposition or normal heating, ventilation, and air conditioning vents are considered NPGIS, unless the roofing material is uncoated metal. The following may also be considered NPGIS: paved bicycle pathways and pedestrian sidewalks that are separated from and not subject to drainage from roads for motor vehicles, fenced fire lanes, infrequently used maintenance access roads, and “in-slope” areas of roads.As used herein, “owner” also refers to, in the appropriate context: (A) any other person authorized to act as the agent for the owner; (B) any person who submits a stormwater management concept or design plan for approval or requests issuance of a permit, when required, authorizing land development to commence; and (C) any person responsible for complying with an approved stormwater management design plan. Such surfaces include those that are subject to vehicular use, industrial activities, or storage of erodible or leachable materials that receive direct rainfall or run-on or blow-in of rainfall.
Metal roofs are considered to be PGIS unless coated with an inert, nonleachable material. Roofs that are subject to venting of indoor pollutants from manufacturing, commercial or other operations or processes are also considered PGIS. A surface, whether paved or not, will be considered PGIS if it is regularly used by motor vehicles. The following are considered regularly-used surfaces: roads, unvegetated road shoulders, bike lanes within the traveled lane of a roadway, driveways, parking lots, unfenced fire lanes, vehicular equipment storage yards, and airport runways. If sites have impervious areas and drainage systems that were built without approved permits, then the existing condition is defined as those that existed prior to the 2004 SWMMEW. These conditions can be verified by record, aerial photography, or other methods. A few examples of source control BMPs are erosion control practices, maintenance of stormwater facilities, constructing roofs over storage and working areas, and directing wash water and similar discharges to the sanitary sewer or a dead end sump. The report shall address the procedures and requirements of Chelan County Code Chapter 13.18 and all of the applicable core elements as defined by the SWMMEW and this chapter. The responsible party named in the recorded stormwater maintenance agreement as set forth in Chapter 13.18 shall maintain in good condition and promptly repair and restore all structural and nonstructural stormwater BMPs and all necessary access routes and appurtenances (grade surfaces, walls, drains, dams and structures, vegetation, erosion and sedimentation controls, and other protective devices). Such repairs or restoration and maintenance shall be in accordance with the approved stormwater management design plan, the stormwater maintenance agreement, and the stormwater maintenance plan.
The county engineer or its representatives shall conduct periodic inspections for all stormwater management control for which a stormwater certificate of completion has been issued in accordance with Section 13.18.030 (9)(c). All inspections shall be documented in writing. The inspection shall document any maintenance and repair needs and any discrepancies from the stormwater maintenance agreement and stormwater maintenance plans. The responsible party shall make records of the installation and of all maintenance and repairs, and shall retain the records for at least five years. These records shall be made available to the county engineer during inspection of the practice and at other reasonable times upon request. The notice shall specify the measures needed to comply with the maintenance agreement and the maintenance plan and shall specify that the responsible party has thirty days or other time frame mutually agreed to between the county engineer and the responsible party, within which such measures shall be completed. If such measures are not completed, then the county engineer shall pursue enforcement procedures pursuant to Chelan County Code Chapter 13.14. The county engineer may assess the responsible party of the practice for the cost of repair work which shall be a lien on the property, or prorated against the beneficial users of the property, and may be placed on the tax bill and collected as ordinary taxes by Chelan County. Applications for any variance shall be submitted in writing. The application shall state fully all substantiating facts and evidence pertinent to the request. The county engineer may grant a variance from the requirements of these standards and regulations when, in his opinion, undue hardship may be created as a result of strict compliance with the provisions of these procedures and requirements. The county engineer may recommend conditions that he deems necessary to be desirable for the public interest.
No variance shall be granted unless it can be shown that the granting of the variance will not be detrimental to the public welfare or injurious to other property in the vicinity. The county engineer may require drainage easements where stormwater discharges must cross an adjacent or off-site property before reaching an adequate conveyance. Examples of these methods are the SCS TR-55 method and the rational method. Prepare and maintain a construction stormwater pollution prevention plan. Apply all known, available and reasonable source control BMPs. Operational and structural source control BMPs shall be selected, designed and maintained according to the SWMMEW. Projects that result in five thousand square feet or more of new pollutant-generating impervious surfaces shall design, size, construct, operate and maintain runoff treatment at the site. The pre-development rate and volume of runoff may only be increased as allowed for in the SWMMEW and if it is demonstrated that it will not impact or damage the natural or manmade environment and is approved by the county engineer. All other requirements of Section 13.18.040 (6) shall apply. Projects that utilize structural BMPs shall prepare an operation and maintenance plan that is prepared in accordance with Chapter 13.18 and the SWMMEW. Projects that meet the requirements of Chapter 13.18 will meet any optional requirements that are adopted as a part of this chapter. This is to ensure that action can be taken by Chelan County, at the applicant’s expense, should the applicant fail to initiate or maintain those measures identified in the approved stormwater site plan (after being given proper notice and within the time specified by the county engineer). If Chelan County takes such action upon such failure by the applicant, Chelan County shall collect from the applicant the difference should the amount of reasonable cost of such action exceed the amount of the security held.
Whenever the applicant is required to post other bonds on the project or on construction related to the facility, the bonds may, with the permission of the county engineer, be combined into a single bond to the extent allowed by law; provided, that the amount thus bonded shall not at any time be less than the amount that would be required under separate bonds. The single bond shall clearly specify on its face those separate bonds which it is intended to replace. Following issuance of the stormwater certification of completion, as described in Section 13.18.030 (10)(C), the construction bond shall be released. The performance bond or guarantee furnished pursuant to the subsection (1) of this section, or the unexpended or unobligated portion thereof, shall be returned to the applicant within thirty days of issuance by the county engineer of a stormwater certificate of completion, or the final acceptance of the permanent stormwater BMP by the county engineer. Any person who has violated or continues to violate the provisions of this chapter may be subject to the enforcement actions outlined in this section or may be restrained by injunction or otherwise abated in a manner provided by law. The county is authorized to seek costs of the abatement in accordance with all applicable laws and resolutions authorizing such actions. In lieu of enforcement proceedings, penalties, and remedies authorized by this chapter, the county may impose alternative compensatory actions, such as storm drain stenciling, attendance at compliance workshops, cleanup, or other alternative actions deemed appropriate by the county.
When the county finds that any person has violated, or continues to violate, any provision of this chapter, or any order issued hereunder, or that the person’s past violations are likely to recur, and that the person’s violation(s) has (have) caused or contributed to an actual or threatened discharge to the MS4 or waters of the United States which reasonably appears to present an imminent or substantial endangerment to the health or welfare of persons or to the environment, the county shall issue an order to the violator directing the person immediately to cease and desist all such violations and directing the violator to: Any person notified of an emergency order directed to it under this subsection shall immediately comply and stop or eliminate its endangering discharge. Issuance of an emergency cease and desist order shall not be a bar against, or a prerequisite for, taking any other action against the violator. The county may, without prior notice, suspend MS4 discharge access to a person when such suspension is necessary to stop an actual or threatened discharge which presents or may present imminent and substantial danger to the environment, or to the health or welfare of persons, or to the MS4 or waters of the United States. If the violator fails to comply with a suspension order issued in an emergency, the county may take such steps as deemed necessary to prevent or minimize damage to the MS4 or waters of the United States, or to minimize danger to persons. Each act of violation and each day upon which any violation shall occur shall constitute a separate offense. The owner of the property or person responsible for the violation will be notified of the cost of abatement, including administrative costs. Payment in full shall be due within thirty days and on the thirty-first day interest may be applied at a rate of eight percent per annum. After ninety days, if payment in full has not been received, a lien may be filed on the property and foreclosed.
The county engineer may approve a payment plan of equal payments evenly spaced over no more than twelve months. The remedies listed in this chapter are not exclusive of any other remedies available under any applicable federal, state or local law and it is within the discretion of the county to seek cumulative remedies. Please upgrade your browser to improve your experience. Specifically, the permit requires that the jurisdictions (permittees) regulated under the permit work collaboratively with other permittees to select, propose, develop, and conduct Ecology-approved studies that will assess the effectiveness of their permit required stormwater management program activities and BMP practices. In response to these requirements, the permittees worked collaboratively to complete Phase 1 (identifying 24 conceptual study ideas) and Phase 2 (developing a ranked list of the top 14 studies). Phase 3 included developing detailed study design proposals for each project. Aimee’s work on this project included developing: conceptual proposals for stormwater educational studies; quality assurance project plan (QAPP) templates for structural, operational, and educational effectiveness studies; and proposals for 12 studies. The QAPP templates were developed in collaboration with multiple permittees and Ecology. The temples were adopted by Ecology and are now required for all permit requirement effectiveness studies in Washington State. Aimee also developed decision tools to assist the permittees in coming to consensus regarding decisions about the studies. She has been the principal investigator and project manager on Stormwater Effectiveness Studies for structural, operational, and educational BMPs, which included the development of the Washington State Quality Assurance Project Plans (QAPPs) Templates. Aimee authored the WSDOT Hydraulics Manual as well as the Highway Runoff Manual and has extensive experience working collaboratively on projects with multiple stakeholders.
She has served as a project manager and design lead on projects such as urban drainage systems; pump stations; stormwater retrofits, low impact development practices, and BMPs; culverts; and fish passage improvements. She has conducted hydrology and hydraulic modeling, developed stormwater comprehensive plans, construction documents (plans, estimates, and specifications), and developed curriculum for professional and undergraduate courses. Aimee has also successfully negotiated NPDES permit conditions and stormwater policy changes with the Washington Department of Ecology and developed grants that resulted in funding stormwater retrofit projects. Her other favorite hobby is anything related to stormwater! Osborn Consulting, Inc. (OCI) is a fast-growing full-service design firm providing civil engineering,. Come join our team as a part time Administrative Assistant. Osborn Consulting, Inc. (OCI) is a fast-growing full-service design. We are excited to welcome our two new Project Engineers, Megan Ehlebracht, EIT, and Kevin Flanagan, EIT. Megan. Eastern Washington representatives requested that Ecology instead create a separate manual for the eastern portion of the state. A chartering meeting was held in June 2001 to formalize the structure and process for preparing the Manual for eastern Washington. The meeting was attended by more than 70 representatives of 17 cities, 11 counties and 5 federal and state agencies with interests in stormwater management in eastern Washington. Ecology agreed to fund the hiring of a consultant team to support the development and preparation of the documents and to assist the Steering Committee and Subcommittees with meeting coordination, public involvement and related project tasks.The scope of work for the project and a proposed production schedule were prepared; a budget was prepared and the work began.
A stakeholder workshop was held on November 29, 2001 to inform interested parties about the project efforts, the regulatory requirements, the schedule for meetings, and the document production format. After the introductory sessions, concurrent meetings of the Subcommittees were held to begin the development of the Manual and the Model Program. Meetings were held at least once per month to review drafts and updates for each chapter of each document. Periodic presentations were made to address special stormwater management issues. These efforts resulted in draft documents being submitted for public review in fall 2002. We'll assume you're ok with this, but you can opt-out if you wish.Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may have an effect on your browsing experience. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information. To the best of our knowledge, this job is no longer available and this page remains here for archival purposes only.This position provides guidance to grant and loan recipients in order to help with planning, construction, and implementation of environmental protection projects and is located in our Central Regional Office in Union Gap, WA. Work in this role frequently intersects with state water quality regulations and permits, engineering specifications, and application of the latest science on pollution prevention, providing dynamic, team-oriented work environment.