Puget Sound Olympia

Municipal Stormwater

New! Low Impact Development (LID) Resources

LID is a stormwater and land use management strategy that strives to mimic pre-disturbance hydrologic processes by emphasizing conservation, use of on-site natural features, site planning, and distributed stormwater management practices (BMPs) that are integrated into a project design. LID BMPs emphasize pre-disturbance hydrologic process of infiltration, filtration, storage, evaporation and transpiration. Common LID BMPs include: bioretention, rain gardens, permeable pavements, minimal excavation foundations, vegetated roofs, and rainwater harvesting.

LID, or Green Stormwater Infrastructure (GSI), requirements for new construction and redevelopment are coming soon in many cities and counties across the state.

Ecology has assembled a variety of LID resources - presentations, fact sheets, videos, reports, manuals - and presents them all on this webpage....Click on each tab in the box below for links to LID resources.  A majority of the resources listed on this page were paid for by initial funding provided by the Legislature to provide free LID trainings.

 

Legislate, Integrate & Plan LID

Upcoming LID requirements in Ecology's Municipal Stormwater Permits must be incorporated into local codes, ordinances, and standards over the next few years around Washington State. Elected officials need to be aware of these requirements so they can help in integration and planning for LID.


LID Briefings for Elected Officials & Other High-Level Land Use Decision Makers


In the spring of 2013, Ecology held thirteen Elected officials briefings across Washington state to introduce the role that LID practices have in the reissued Municipal Stormwater Permits.
The briefings discussed:

  • Impetus behind the new permit requirements
  • Changes in the newly reissued NPDES stormwater permits related to LID
  • Timeline for various actions by permittees
  • What the new changes will mean for new development and the actions permittees can take to prepare
  • Training and other resources that are currently available or that Ecology intends to offer
LID Briefings for Elected Officials - Eastern Washington Presentation
LID Briefings for Elected Officials - Western Washington Presentation

Integrating LID into Local Codes: A Guidebook for Local Governments


The Puget Sound Partnership, in collaboration with Ecology, has developed a guidebook designed to help local government staff integrate LID requirements into local codes and standards. The guidebook is intended for both local governments complying with the LID requirements associated with the pending reissuance of the Phase I and Phase II Western Washington Municipal Stormwater Permits and local governments not subject to the reissued permits that wish to integrate LID requirements into their codes and standards.

Puget Sound Partnership - Low Impact Development (LID) Regulatory Assistance Project with sample ordinances

Association of Washington Cities (AWC) LID Webpage


The Association of Washington Cities has developed an LID Webpage to provide cities and counties with information and technical resources on LID.

AWC LID Tools & Resources Webpage - This webpage provides an evolving portfolio of resources for those responsible for implementing LID in their communities or those who must describe it to builders, citizens, and the media. Included on the webpage are fact sheet, talking points, and articles about LID.

EPA LID "Barrier Busters" Fact Sheets


The Environmental Protection Agency (EPA) has developed a seven-part series of fact sheets. The fact sheets are primarily intended for state and local decision makers who are considering adoption of LID, but who have concerns with LID. These fact sheets explain the benefits of LID in clear terms and through examples. Specific fact sheets in this series directly address specific concerns that have been raised about adopting LID, thereby busting barriers.

2012 LID Technical Guidance Manual for Puget Sound


Chapters 2 and 3 of the 2012 LID Technical Guidance Manual for Puget Sound can help builders, engineers, project developers, and others to integrate and plan for LID BMPs as they lay out proposed developments.

Juanita Creek Report


King County completed a study to identify a retrofit strategy or strategies that, if implemented, would achieve the goal of improved flow and water quality conditions supportive of aquatic beneficial uses (e.g., fish use) within the Juanita Creek stream system. The study, which took a "multiple lines of evidence" approach, found that the best performing mitigation scenario combined the flow control standards for low-flow (LID performance standard per Minimum Requirement #5) and high-flow (standard requirement per Minimum Requirement #7).

Self-guided Tour of LIDs in Clark County


This website lists sites in Clark County where LID techniques have been used. It gives citizens opportunities to see what LID techniques look like, understand the design and how they function, and get more information. In addition to listing LID sites in Clark County, the site also includes descriptions, pictures, and videos on LID techniques.

City of Seattle Completed GSI Projects


This website lists past projects in the City of Seattle that used green stormwater infrastructure (GSI). These projects were also called "natural drainage" projects. For each project listed, project resources (such as plan sets, construction details & sections and plant lists) are provided. In addition to the project information, the website contains a cost-benefit analysis, design guidelines, and Seattle's Natural Drainage Systems Booklet (in both English & Chinese).

 

Design & Model LID

Incorporating LID principles and BMPs into a project at the time of conceptualization may save time and money later. Project developers, engineers, architects, and other need to understand the principles and requirements associated with LID so they can effectively design their projects. Engineers will often use a model to determine compliance with LID project requirements.


2012 Stormwater Management Manual for Western Washington (SWMMWW)


The SWMMWW provides guidance on the measures necessary to control the quantity and quality of stormwater. Local municipalities can use this manual to set stormwater requirements for new development and redevelopment projects. Land developers and engineers can use this manual to design permanent stormwater control plans, create construction stormwater pollution prevention plans, and determine stormwater infrastructure. Businesses can use this manual to help design their stormwater pollution prevention plans. The 2012 version of the SWMMWW includes LID related definitions and supports the new LID requirements in the Municipal Stormwater Permits.

Flow chart for determining Low Impact Development Requirements per Minimum Requirement #5 - provides a step-by-step process for determining requirements related to Minimum Requirement #5.

Previous Workshops webpage - In March - May, 2013 Ecology held 10 public overview trainings on the major changes from the 2005 to the 2012 SWMMWW. These trainings were geared toward permittee staff, consultants, engineers, and other interested members of the public. This webpage includes the PowerPoint presentation handout and other handouts from these trainings.

Eastern Washington Low Impact Development Guidance Manual


The Eastern Washington LID Guidance Manual provides stormwater managers and site designers with a common understanding of LID goals, objectives, and LID BMPs that are applicable to eastern Washington. The manual contains chapters on eastern Washington hydrology, planning for LID, designing for LID, and LID BMPs.

2012 LID Technical Guidance Manual for Puget Sound


The LID Technical Guidance Manual for Puget Sound provides stormwater managers and site designers with a common understanding of LID goals, objectives, specifications, and flow reduction and water quality treatment credits that are applicable to the Puget Sound region. The LID Technical Guidance Manual has chapters on site assessment, planning and layout, vegetation protection, LID management practices, and modeling guidance.

Rain Garden Handbook for Western Washington


The Rain Garden Handbook for Western Washington is a guide for helping people plan, design and build rain gardens to assist in controlling stormwater. This guide can be used by homeowners, landscapers, landscape architects, engineers and others to implement Rain Gardens in Western Washington for regulatory as well as non-regulatory requirements.

Western Washington Continuous Simulation Hydrology Model (WWHM)


Ecology requires the use of WWHM (or other approved runoff models) for estimating surface runoff and sizing stormwater and treatment facilities in western Washington. In 2012, the WWHM was updated to include LID elements such as bioretention, green roofs, and pervious pavement.

Previous Workshops webpage - In March - May, 2013 Ecology held 10 public overview LID focused trainings on WWHM 2012. These trainings were geared toward permittee staff, consultants, engineers, and other interested members of the public. This webpage includes the PowerPoint presentations and screenshots of WWHM 2012.

Building Soil: Guidelines & Resources for Implementing Soil Quality & Depth BMP T5.13


This publication provides guidance for landscape designers, builders, planners, and inspectors to implement soil quality BMPs. This guide describes techniques for construction site soil handling, reducing soil compaction, and amending site soils with compost to meet BMP T5.13 Post Construction Soil Quality and Depth, in the SWMMWW.

Self-guided Tour of LIDs in Clark County


This website lists sites in Clark County where LID techniques have been used. It gives citizens opportunities to see what LID techniques look like, understand the design and how they function, and get more information. In addition to listing LID sites in Clark County, the site also includes descriptions, pictures, and videos on LID techniques.

Green Infrastructure in Arid and Semi-arid Climates


This case study created by the United States Environmental Protection Agency provides more information and guidance on the use of green infrastructure in arid and semi-arid climates.

City of Seattle Completed GSI Projects


This website lists past projects in the City of Seattle that used green stormwater infrastructure (GSI). These projects were also called "natural drainage" projects. For each project listed, project resources such as plan sets, construction details & sections and plant lists. In addition to the project information the website contains a cost-benefit analysis, design guidelines, and Seattle's Natural Drainage Systems Booklet (in both English & Chinese).

 

Review, Approve & Inspect LID

City and county reviewers need to review plans submitted by engineers/designers to determine compliance with LID requirements. City and county officials need to inspect LID projects and BMPs to ensure that they will function correctly and were built as designed.

>> Also see our 2012 Stormwater Management Manual for Western Washington (SWMMWW)
and the Western Washington Continuous Simulation Hydrology Model (WWHM)


Example LID Inspection Forms


In June, 2013 Ecology held eight trainings on the Western Washington LID O&M Guidance Document. The trainings focused on O&M of bioretention, permeable pavement, and vegetated roofs. The training also covered several related topics and included a field inspection component. As part of this training example inspection forms that local governments could modify and use were provided.

Example Bioretention Inspection Form - This form was created as an example inspection form for inspecting bioretention or rain garden BMPs.
Example Permeable Pavement Inspection Form - This form was created as an example inspection form for inspecting permeable pavement.

Eastern Washington Low Impact Development Guidance Manual


The Eastern Washington LID Guidance Manual provides stormwater managers and site designers with a common understanding of LID goals, objectives, and LID BMPs that are applicable to eastern Washington. The manual contains chapters on eastern Washington hydrology, planning for LID, designing for LID, and LID BMPs.

2012 LID Technical Guidance Manual for Puget Sound


The LID Technical Guidance Manual for Puget Sound provides stormwater managers and site designers with a common understanding of LID goals, objectives, specifications, and flow reduction and water quality treatment credits that are applicable to the Puget Sound region. The LID Technical Guidance Manual has chapters on site assessment, planning and layout, vegetation protection, LID management practices, and modeling guidance.

Rain Garden Handbook for Western Washington


The Rain Garden Handbook for Western Washington is a guide for helping people plan, design and build rain gardens to assist in controlling stormwater. Homeowners, landscapers, landscape architects, engineers and others can use this guide to implement Rain Gardens in Western Washington for regulatory as well as non-regulatory requirements.

 

Bid & Supply LID

Once a project is approved by local government it typically goes out for bid. This will determine the cost of the project. Bidders need information on the costs associated with LID. Building material suppliers will need to provide products that work for LID.

>> Also see our 2012 Stormwater Management Manual for Western Washington (SWMMWW)


LID Toolbox & Trainings for Compost Manufacturing & Compost Retail Businesses


In the spring of 2013, Ecology held three trainings and a webinar for Compost manufactures and compost realtors. This website also provides additional resources for compost manufactures and realtors.

Video: Intro to LID - Training for Compost Producers, Suppliers, and Consumers - This webinar provides an overview of LID techniques for stormwater control and treatment. The presentation covers many LID techniques, but focuses on those that include the use of compost. Specifically, the video discusses amending soils with compost in vegetated areas and the use and benefits of compost in bioretention facilities. The webinar was originally presented for the Washington State Department of Ecology by Herrera Environmental Consultants and Cascadia Consulting Group on June 13, 2013.

Video: Compost & LID - LID Training for Compost Producers, Suppliers, and Consumers - This is the second part of the above webinar. This webinar provides an in-depth review of Washington State stormwater codes relevant to LID, specifications for the use of compost for LID, and case studies of compost and bioretention soil mix use in LID projects. The webinar was originally presented for the Washington State Department of Ecology by Herrera Environmental Consultants and Cascadia Consulting Group on June 13, 2013.

Example Soil and Compost Specifications for Low Impact Development - Easy to access concise tables with specifications for soil amendment and biortention soil mix for both eastern & western Washington.

Case Studies - Two examples of compost vendors experiences working on LID projects and the lessons learned from those projects.

Process for Becoming a U.S. Compost Council - Certified Compost Producer for Stormwater LID - Simple flow chart depicting the process for producing compost for LID BMPs.

Frequently Asked Questions about Compost use for LID BMPs - This document provides the answers to some of the most common questions related to compost and its use for LID BMPs.

Washington Aggregates & Concrete Association: Pervious Concrete Webpage


The Washington Aggregates & Concrete Association has created a webpage that contains a brochure, video, and additional resources on Pervious Concrete.

Interlocking Concrete Pavement Institute (ICPI) Permeable Pavers Website


ICPI's permeable pavers website provides a video, detail drawings, case studies & articles, and additional resources on permeable pavers.

National Asphalt Pavement Association (NAPA) Porous Asphalt Website


NAPA's porous asphalt website provides information and a publication on porous asphalt.

Building Soil: Guidelines & Resources for Implementing Soil Quality & Depth BMP T5.13


Soil quality determines landscape success: plant survival, growth, disease resistance, and maintenance needs. This publication provides guidance for landscape designers, builders, planners, and inspectors to implement soil quality BMPs. This guide describes techniques for construction site soil handling, reducing soil compaction, and amending site soils with compost to meet BMP T5.13 Post Construction Soil Quality and Depth, in the SWMMWW.

BuildingSoil.org and Soilsforsalmon.org - These webpages include additional information about building soil. Soilsforsalmon.org also has a cost calculator for estimating the amount of compost required for soil amendment.

King County's Native Plant Guide


King County's Native Plant Guide provides a listing (with over 100 photos) of native plants. The guide allows you to search for plants, and to create your own customized native plant list - which makes a great shopping list. The guide also includes illustrated native plant landscaping plans, and how to articles.

Listing of Native Plant Nurseries in Washington State - This list of Native Plant Nurseries was compiled by the Water and Land Resources Division of King County, Washington. It is not intended as an endorsement of these businesses.

 

Build LID

To get the water quality benefits and to meet the regulatory requirements, LID BMPs need to be built correctly. Builders need to know LID building techniques, the purpose of LID BMPs, and how BMPs function in order to build LID BMPs correctly.

>> Also see our 2012 Stormwater Management Manual for Western Washington (SWMMWW)


Building Industry Association of Washington (BIAW) LID Webpage


BIAW has created an LID webpage that contains a video, industry fact sheets, articles, and resources on LID.

The following articles were published in Building Insight:

Eastern Washington Low Impact Development Guidance Manual


The Eastern Washington LID Guidance Manual provides stormwater managers and site designers with a common understanding of LID goals, objectives, and LID BMPs that are applicable to eastern Washington. Chapter 4 contains construction guidance for numerous LID BMPs.

2012 LID Technical Guidance Manual for Puget Sound


The LID Technical Guidance Manual for Puget Sound provides stormwater managers and site designers with a common understanding of LID goals, objectives, specifications, and flow reduction and water quality treatment credits that are applicable to the Puget Sound region. Chapters 4, 5, & 6 provide information on construction techniques, sequencing, and specifications.

Rain Garden Handbook for Western Washington


The Rain Garden Handbook for Western Washington is a guide for helping people plan, design and build rain gardens to assist in controlling stormwater. This guide can be used by homeowners, landscapers, landscape architects, engineers and others to implement Rain Gardens in Western Washington for regulatory as well as non-regulatory requirements. Chapter 2 of this handbook provides information on building rain gardens.

Building Soil: Guidelines & Resources for Implementing Soil Quality & Depth BMP T5.13


Soil quality determines landscape success: plant survival, growth, disease resistance, and maintenance needs. This publication provides guidance for landscape designers, builders, planners, and inspectors to implement soil quality BMPs. This guide describes techniques for construction site soil handling, reducing soil compaction, and amending site soils with compost to meet BMP T5.13 Post Construction Soil Quality and Depth, in the SWMMWW.

BuildingSoil.org and Soilsforsalmon.org - These webpages include additional information about building soil.

 

Plant LID

Many LID BMPs require plants in order to function correctly. Native plants may need to be planted or maintained. Landscape architects, designers, master gardeners, and arborists can assist in selecting and planting correct plants.

>> Also see our 2012 Stormwater Management Manual for Western Washington (SWMMWW)


Washington Association of Landscape Professionals (WALP) and the Washington State Nursery & Landscape Association (WSNLA)


The Washington Association of Landscape Professionals and the Washington State Nursery & Landscape Association have created websites with information on LID trainings and tools.

The following articles were (or soon will be) published in Northwest Landscape Professional and Balled & Burlaped (B & B):

LID Trainings for Landscapers & Nurseries


Rain Garden Handbook for Western Washington


The Rain Garden Handbook for Western Washington is a guide for helping people plan, design and build rain gardens to assist in controlling stormwater. This guide can be used by homeowners, landscapers, landscape architects, engineers and others to implement Rain Gardens in Western Washington for regulatory as well as non-regulatory requirements. Chapter 3 of this handbook provides information on planting rain gardens.

Eastern Washington Low Impact Development Guidance Manual


The Eastern Washington LID Guidance Manual provides stormwater managers and site designers with a common understanding of LID goals, objectives, and LID BMPs that are applicable to eastern Washington. Appendix D of this manual contains a bioretention plant list with plant species that are suited for eastern Washington.

2012 LID Technical Guidance Manual for Puget Sound


The LID Technical Guidance Manual for Puget Sound provides stormwater managers and site designers with a common understanding of LID goals, objectives, specifications, and flow reduction and water quality treatment credits that are applicable to the Puget Sound region. Appendix 1 and 2 includes lists of recommended plants for the Puget Sound region.

Building Soil: Guidelines & Resources for Implementing Soil Quality & Depth BMP T5.13


Soil quality determines landscape success: plant survival, growth, disease resistance, and maintenance needs. This publication provides guidance for landscape designers, builders, planners, and inspectors to implement soil quality BMPs. This guide describes techniques for construction site soil handling, reducing soil compaction, and amending site soils with compost to meet BMP T5.13 Post Construction Soil Quality and Depth, in the SWMMWW.

King County's Native Plant Guide


King County's Native Plant Guide provides a listings (with over 100 photos) of native plants. The guide allows you to search for plants, and to create your own customized native plant list. The guide also includes illustrated native plant landscaping plans, and how to articles.

Listing of Native Plant Nurseries in Washington State - This list of Native Plant Nurseries was compiled by the Water and Land Resources Division of King County, Washington. It is not intended as an endorsement of these businesses.

 

Market LID

Neighborhoods and home built with LID features often demonstrate higher property values than comparable neighborhoods and homes without those features. Green spaces and LID BMPs can increase neighborhood desirability and add curb appeal. Land owners need to know about the function, maintenance requirements, and benefits of LID features on their properties.

>> Also see our 2012 Stormwater Management Manual for Western Washington (SWMMWW)


Catching Rain: LID & Green Stormwater Strategies for Real Estate Professionals


In the spring of 2013, Ecology held eight trainings for realtors across Washington state.
Topics covered included:

  • LID BMPs
  • Information on federal, state, and local regulations
  • How LID/GSI can save money and solve water runoff problems on existing sites
  • Marketing and appraisal overview of LID
  • Maintenance requirements for the different LID/GSI techniques

Catching Rain Fact Sheets (1-3):
Catching Rain: LID - Protecting Our Waters
Catching Rain: Washington's New LID Stormwater Regulations
Catching Rain: Understanding Stormwater Management & the Development Process

LID Cost Analysis Report, Presentation, & Video


The LID Cost Analysis Report provides information on the costs of stormwater control measures for typical developments in western Washington, based on minimum requirements set forth by the Phase I and Western Washington Phase II Municipal Stormwater Permits and the 2012 Stormwater Management Manual for Western Washington (SWMMWW). The report, presentation, and video address the question "Does the 2012 SWMMWW make stormwater management cost more or less than the 2005 SWMMWW?"

EPA LID "Barrier Busters" Fact Sheets


The Environmental Protection Agency (EPA) has developed a seven-part series of fact sheets. The fact sheets are primarily intended for state and local decision makers who are considering adoption of LID, but who have concerns with LID. These fact sheets explain the benefits of LID in clear terms and through examples. Specific fact sheets in this series directly address specific concerns that have been raised about adopting LID, thereby busting barriers.

LID Fact Sheet #3 - Costs of LID: LID Saves Money and Protects Your Community's Resources

LID Fact Sheet #4 - Aesthetics of LID: LID Technologies Can Benefit Your Community's Visual Environment

Building Soil Homebuyer Fact Sheet


BuildingSoil.org created a homebuyer fact sheet that builders or realtors can provide to homebuyers when they purchase a property with compost amended soil. The fact sheet promote the use of healthy soil and landscape practices.

 

Maintain LID

Cities and counties are required to maintain certain LID BMPs, sometimes land owners will be responsible for maintaining LID features. It is essential to maintain LID BMPs/facilities in order for them to continue to function properly.

>> Also see our 2012 Stormwater Management Manual for Western Washington (SWMMWW)


Western Washington LID Operations & Maintenance (O&M) Guidance Document


This document provides guidance on procedures, equipment and materials, skills, and staffing for LID facility maintenance as well as administrative tools and guidance for implementing LID O&M programs. This guidance document contains maintenance standards for bioretention, rain gardens, permeable pavement, vegetated roofs, downspout full infiltration systems, and other LID BMPs.

Note: In the 2012 SWMMWW, Volume V, Section 4.6, Ecology refers to grant funding to develop detailed maintenance standards for Bioretention Facilities and Permeable Pavement. This guidance document was created as a result of that grant funding. Ecology recommends that Western Washington Municipal Stormwater Permittees use this LID O&M Guidance Document when adopting maintenance standards for their LID BMPs/facilities.

Updated! Training on LID Operations & Maintenance


In June, 2013 Ecology held eight trainings on the Western Washington LID O&M Guidance Document. The trainings focused on O&M of bioretention, permeable pavement, and vegetated roofs. The training also covered several related topics and included a field inspection component.

New! LID O&M Training Videos - These videos were developed based on the trainings on the Western Washington LID O&M Guidance Document. The videos cover everything related to LID O&M from Municipal Stormwater Permit Requirements, to inspections and maintenance techniques for bioretention, permeable pavement, and vegetated roof BMPs/facilities. The training videos also discuss administrative tools for LID O&M for municipalities.

Presentation on the LID O&M Guidance Document

Example Bioretention Inspection Form - This form was created as an example inspection form that local governments could modify and use for inspecting bioretention or rain garden BMPs.
Example Permeable Pavement Inspection Form - This form was created as an example inspection form that local governments could modify and use for inspecting permeable pavement.

Eastern Washington Low Impact Development Guidance Manual


The Eastern Washington LID Guidance Manual provides stormwater managers and site designers with a common understanding of LID goals, objectives, and LID BMPs that are applicable to eastern Washington. In chapter four, the manual contains maintenance guidance for various LID BMPs.

2012 LID Technical Guidance Manual for Puget Sound


The LID Technical Guidance Manual for Puget Sound provides stormwater managers and site designers with a common understanding of LID goals, objectives, specifications, and flow reduction and water quality treatment credits that are applicable to the Puget Sound region. Appendix four of the LID Technical Guidance Manual provides two maintenance guidelines. The first is a general maintenance approach. The second is a more detailed maintenance manual for bioretention and permeable pavement developed by the City of Seattle.

Rain Garden Handbook for Western Washington


The Rain Garden Handbook for Western Washington is a guide for helping people plan, design and build rain gardens to assist in controlling stormwater. This guide can be used by homeowners, landscapers, landscape architects, engineers and others to implement Rain Gardens in Western Washington for regulatory as well as non-regulatory requirements. Chapter four provides guidance on maintaining rain gardens.

 

Learn LID

Public and private sector stormwater professionals working in a variety of fields related to development will need additional training to meet Ecology’s new LID requirements.


FREE LID Trainings


Ecology received 2-year funding from the Legislature to begin developing and providing free LID trainings for a variety of professional audiences on a variety of LID topics. This webpage is routinely updated to provide information regarding Ecology's LID Training Plan and upcoming LID training opportunities.

Certificate in Green Stormwater Infrastructure Design & Management


Engineers, planners, construction managers, architects, and other professionals can earn a certificate in Green Stormwater Infrastructure (GSI) Design and Management from the University of Washington. Participants in this program will learn about the science and policy behind GSI and gain knowledge and skills to successfully design, implement, and maintain GSI projects.

WSU LID Technical Workshop Series


The Washington State University LID Technical Workshop Series provides the latest design guidelines, science, construction details, and practical experience necessary to properly design, build and maintain LID practices. The WSU Extension LID Certificate program is the first LID certificate program of its kind in Washington State. For civil engineers and landscape architects, the certificate indicates that the individual has received the latest design concepts for LID practices; has a level of technical knowledge necessary to recognize design opportunities and challenges; and is better equipped to optimize LID systems. Completing the certificate will provide a breadth of knowledge necessary for various disciplines (e.g. planners and biologists) to better communicate with civil engineers and design and maintain integrated LID projects. The LID certificate will also provide local jurisdiction staff with an improved understanding of the technical details to plan, implement or review public and private LID projects during the various stages of project development, as well as help develop improved inspection and maintenance programs.

 

Who should I contact if I have questions?

Contact Information for Municipal Stormwater Permits

Native format files: Several of the LID resources listed on this website are available in different formats (Word, PowerPoint, etc). If you would like to request an LID resource in another format, please contact Jocelyn Jones at 360-407-7529.

Contact Information for Municipal Stormwater Permits